posixmodule.c 319 KB
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/* POSIX module implementation */

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/* This file is also used for Windows NT/MS-Win and OS/2.  In that case the
   module actually calls itself 'nt' or 'os2', not 'posix', and a few
   functions are either unimplemented or implemented differently.  The source
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   assumes that for Windows NT, the macro 'MS_WINDOWS' is defined independent
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   of the compiler used.  Different compilers define their own feature
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   test macro, e.g. '__BORLANDC__' or '_MSC_VER'.  For OS/2, the compiler
   independent macro PYOS_OS2 should be defined.  On OS/2 the default
   compiler is assumed to be IBM's VisualAge C++ (VACPP).  PYCC_GCC is used
   as the compiler specific macro for the EMX port of gcc to OS/2. */
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#ifdef __APPLE__
   /*
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    * Step 1 of support for weak-linking a number of symbols existing on
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    * OSX 10.4 and later, see the comment in the #ifdef __APPLE__ block
    * at the end of this file for more information.
    */
#  pragma weak lchown
#  pragma weak statvfs
#  pragma weak fstatvfs

#endif /* __APPLE__ */

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#define PY_SSIZE_T_CLEAN

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#include "Python.h"

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#if defined(__VMS)
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#    error "PEP 11: VMS is now unsupported, code will be removed in Python 3.4"
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#    include <unixio.h>
#endif /* defined(__VMS) */

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#ifdef __cplusplus
extern "C" {
#endif

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PyDoc_STRVAR(posix__doc__,
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"This module provides access to operating system functionality that is\n\
standardized by the C Standard and the POSIX standard (a thinly\n\
disguised Unix interface).  Refer to the library manual and\n\
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corresponding Unix manual entries for more information on calls.");
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#if defined(PYOS_OS2)
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#error "PEP 11: OS/2 is now unsupported, code will be removed in Python 3.4"
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#define  INCL_DOS
#define  INCL_DOSERRORS
#define  INCL_DOSPROCESS
#define  INCL_NOPMAPI
#include <os2.h>
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#if defined(PYCC_GCC)
#include <ctype.h>
#include <io.h>
#include <stdio.h>
#include <process.h>
#endif
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#include "osdefs.h"
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#endif

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#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif

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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif /* HAVE_SYS_TYPES_H */

#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif /* HAVE_SYS_STAT_H */
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#ifdef HAVE_SYS_WAIT_H
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#include <sys/wait.h>           /* For WNOHANG */
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#endif
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifdef HAVE_FCNTL_H
#include <fcntl.h>
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#endif /* HAVE_FCNTL_H */
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#ifdef HAVE_GRP_H
#include <grp.h>
#endif

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#ifdef HAVE_SYSEXITS_H
#include <sysexits.h>
#endif /* HAVE_SYSEXITS_H */

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#ifdef HAVE_SYS_LOADAVG_H
#include <sys/loadavg.h>
#endif

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#ifdef HAVE_LANGINFO_H
#include <langinfo.h>
#endif

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#ifdef HAVE_SYS_SENDFILE_H
#include <sys/sendfile.h>
#endif

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#ifdef HAVE_SCHED_H
#include <sched.h>
#endif

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#if defined(HAVE_SYS_XATTR_H) && defined(__GLIBC__)
#define USE_XATTRS
#endif

#ifdef USE_XATTRS
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#include <sys/xattr.h>
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#endif

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#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__APPLE__)
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#endif

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#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#endif

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/* Various compilers have only certain posix functions */
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/* XXX Gosh I wish these were all moved into pyconfig.h */
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#if defined(PYCC_VACPP) && defined(PYOS_OS2)
#include <process.h>
#else
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#if defined(__WATCOMC__) && !defined(__QNX__)           /* Watcom compiler */
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#define HAVE_GETCWD     1
#define HAVE_OPENDIR    1
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#define HAVE_SYSTEM     1
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#if defined(__OS2__)
#define HAVE_EXECV      1
#define HAVE_WAIT       1
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#endif
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#include <process.h>
#else
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#ifdef __BORLANDC__             /* Borland compiler */
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#define HAVE_EXECV      1
#define HAVE_GETCWD     1
#define HAVE_OPENDIR    1
#define HAVE_PIPE       1
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#define HAVE_SYSTEM     1
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#define HAVE_WAIT       1
#else
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#ifdef _MSC_VER         /* Microsoft compiler */
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#define HAVE_GETCWD     1
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#define HAVE_GETPPID    1
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#define HAVE_GETLOGIN   1
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#define HAVE_SPAWNV     1
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#define HAVE_EXECV      1
#define HAVE_PIPE       1
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#define HAVE_SYSTEM     1
#define HAVE_CWAIT      1
#define HAVE_FSYNC      1
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#define fsync _commit
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#else
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#if defined(PYOS_OS2) && defined(PYCC_GCC) || defined(__VMS)
/* Everything needed is defined in PC/os2emx/pyconfig.h or vms/pyconfig.h */
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#else                   /* all other compilers */
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/* Unix functions that the configure script doesn't check for */
#define HAVE_EXECV      1
#define HAVE_FORK       1
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#if defined(__USLC__) && defined(__SCO_VERSION__)       /* SCO UDK Compiler */
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#define HAVE_FORK1      1
#endif
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#define HAVE_GETCWD     1
#define HAVE_GETEGID    1
#define HAVE_GETEUID    1
#define HAVE_GETGID     1
#define HAVE_GETPPID    1
#define HAVE_GETUID     1
#define HAVE_KILL       1
#define HAVE_OPENDIR    1
#define HAVE_PIPE       1
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#define HAVE_SYSTEM     1
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#define HAVE_WAIT       1
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#define HAVE_TTYNAME    1
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#endif  /* PYOS_OS2 && PYCC_GCC && __VMS */
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#endif  /* _MSC_VER */
#endif  /* __BORLANDC__ */
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#endif  /* ! __WATCOMC__ || __QNX__ */
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#endif /* ! __IBMC__ */
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#ifndef _MSC_VER
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#if defined(__sgi)&&_COMPILER_VERSION>=700
/* declare ctermid_r if compiling with MIPSPro 7.x in ANSI C mode
   (default) */
extern char        *ctermid_r(char *);
#endif

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#ifndef HAVE_UNISTD_H
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#if defined(PYCC_VACPP)
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extern int mkdir(char *);
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#else
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#if ( defined(__WATCOMC__) || defined(_MSC_VER) ) && !defined(__QNX__)
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extern int mkdir(const char *);
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#else
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extern int mkdir(const char *, mode_t);
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#endif
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#endif
#if defined(__IBMC__) || defined(__IBMCPP__)
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extern int chdir(char *);
extern int rmdir(char *);
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#else
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extern int chdir(const char *);
extern int rmdir(const char *);
#endif
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#ifdef __BORLANDC__
extern int chmod(const char *, int);
#else
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extern int chmod(const char *, mode_t);
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#endif
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/*#ifdef HAVE_FCHMOD
extern int fchmod(int, mode_t);
#endif*/
/*#ifdef HAVE_LCHMOD
extern int lchmod(const char *, mode_t);
#endif*/
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extern int chown(const char *, uid_t, gid_t);
extern char *getcwd(char *, int);
extern char *strerror(int);
extern int link(const char *, const char *);
extern int rename(const char *, const char *);
extern int stat(const char *, struct stat *);
extern int unlink(const char *);
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#ifdef HAVE_SYMLINK
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extern int symlink(const char *, const char *);
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#endif /* HAVE_SYMLINK */
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#ifdef HAVE_LSTAT
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extern int lstat(const char *, struct stat *);
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#endif /* HAVE_LSTAT */
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#endif /* !HAVE_UNISTD_H */
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#endif /* !_MSC_VER */
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#ifdef HAVE_UTIME_H
#include <utime.h>
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#endif /* HAVE_UTIME_H */
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#ifdef HAVE_SYS_UTIME_H
#include <sys/utime.h>
#define HAVE_UTIME_H /* pretend we do for the rest of this file */
#endif /* HAVE_SYS_UTIME_H */

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#ifdef HAVE_SYS_TIMES_H
#include <sys/times.h>
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#endif /* HAVE_SYS_TIMES_H */
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#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
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#endif /* HAVE_SYS_PARAM_H */
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#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
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#endif /* HAVE_SYS_UTSNAME_H */
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#ifdef HAVE_DIRENT_H
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#include <dirent.h>
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#define NAMLEN(dirent) strlen((dirent)->d_name)
#else
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#if defined(__WATCOMC__) && !defined(__QNX__)
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#include <direct.h>
#define NAMLEN(dirent) strlen((dirent)->d_name)
#else
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#define dirent direct
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#define NAMLEN(dirent) (dirent)->d_namlen
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#endif
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#ifdef HAVE_SYS_NDIR_H
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#include <sys/ndir.h>
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#endif
#ifdef HAVE_SYS_DIR_H
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#include <sys/dir.h>
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#endif
#ifdef HAVE_NDIR_H
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#include <ndir.h>
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#endif
#endif
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#ifdef _MSC_VER
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#ifdef HAVE_DIRECT_H
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#include <direct.h>
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#endif
#ifdef HAVE_IO_H
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#include <io.h>
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#endif
#ifdef HAVE_PROCESS_H
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#include <process.h>
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#endif
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#ifndef VOLUME_NAME_DOS
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#define VOLUME_NAME_DOS 0x0
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#endif
#ifndef VOLUME_NAME_NT
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#define VOLUME_NAME_NT  0x2
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#endif
#ifndef IO_REPARSE_TAG_SYMLINK
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#define IO_REPARSE_TAG_SYMLINK (0xA000000CL)
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#endif
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#include "osdefs.h"
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#include <malloc.h>
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#include <windows.h>
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#include <shellapi.h>   /* for ShellExecute() */
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#include <lmcons.h>     /* for UNLEN */
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#ifdef SE_CREATE_SYMBOLIC_LINK_NAME /* Available starting with Vista */
#define HAVE_SYMLINK
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static int win32_can_symlink = 0;
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#endif
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#endif /* _MSC_VER */
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#if defined(PYCC_VACPP) && defined(PYOS_OS2)
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#include <io.h>
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#endif /* OS2 */
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#ifndef MAXPATHLEN
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#if defined(PATH_MAX) && PATH_MAX > 1024
#define MAXPATHLEN PATH_MAX
#else
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#define MAXPATHLEN 1024
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#endif
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#endif /* MAXPATHLEN */

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#ifdef UNION_WAIT
/* Emulate some macros on systems that have a union instead of macros */

#ifndef WIFEXITED
#define WIFEXITED(u_wait) (!(u_wait).w_termsig && !(u_wait).w_coredump)
#endif

#ifndef WEXITSTATUS
#define WEXITSTATUS(u_wait) (WIFEXITED(u_wait)?((u_wait).w_retcode):-1)
#endif

#ifndef WTERMSIG
#define WTERMSIG(u_wait) ((u_wait).w_termsig)
#endif

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#define WAIT_TYPE union wait
#define WAIT_STATUS_INT(s) (s.w_status)

#else /* !UNION_WAIT */
#define WAIT_TYPE int
#define WAIT_STATUS_INT(s) (s)
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#endif /* UNION_WAIT */

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/* Don't use the "_r" form if we don't need it (also, won't have a
   prototype for it, at least on Solaris -- maybe others as well?). */
#if defined(HAVE_CTERMID_R) && defined(WITH_THREAD)
#define USE_CTERMID_R
#endif

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/* choose the appropriate stat and fstat functions and return structs */
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#undef STAT
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#undef FSTAT
#undef STRUCT_STAT
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#if defined(MS_WIN64) || defined(MS_WINDOWS)
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#       define STAT win32_stat
#       define FSTAT win32_fstat
#       define STRUCT_STAT struct win32_stat
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#else
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#       define STAT stat
#       define FSTAT fstat
#       define STRUCT_STAT struct stat
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#endif

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#if defined(MAJOR_IN_MKDEV)
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#include <sys/mkdev.h>
#else
#if defined(MAJOR_IN_SYSMACROS)
#include <sys/sysmacros.h>
#endif
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#if defined(HAVE_MKNOD) && defined(HAVE_SYS_MKDEV_H)
#include <sys/mkdev.h>
#endif
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#endif
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/* A helper used by a number of POSIX-only functions */
#ifndef MS_WINDOWS
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static int
_parse_off_t(PyObject* arg, void* addr)
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{
#if !defined(HAVE_LARGEFILE_SUPPORT)
    *((off_t*)addr) = PyLong_AsLong(arg);
#else
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    *((off_t*)addr) = PyLong_AsLongLong(arg);
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#endif
    if (PyErr_Occurred())
        return 0;
    return 1;
}
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#endif
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#if defined _MSC_VER && _MSC_VER >= 1400
/* Microsoft CRT in VS2005 and higher will verify that a filehandle is
 * valid and throw an assertion if it isn't.
 * Normally, an invalid fd is likely to be a C program error and therefore
 * an assertion can be useful, but it does contradict the POSIX standard
 * which for write(2) states:
 *    "Otherwise, -1 shall be returned and errno set to indicate the error."
 *    "[EBADF] The fildes argument is not a valid file descriptor open for
 *     writing."
 * Furthermore, python allows the user to enter any old integer
 * as a fd and should merely raise a python exception on error.
 * The Microsoft CRT doesn't provide an official way to check for the
 * validity of a file descriptor, but we can emulate its internal behaviour
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 * by using the exported __pinfo data member and knowledge of the
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 * internal structures involved.
 * The structures below must be updated for each version of visual studio
 * according to the file internal.h in the CRT source, until MS comes
 * up with a less hacky way to do this.
 * (all of this is to avoid globally modifying the CRT behaviour using
 * _set_invalid_parameter_handler() and _CrtSetReportMode())
 */
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/* The actual size of the structure is determined at runtime.
 * Only the first items must be present.
 */
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typedef struct {
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    intptr_t osfhnd;
    char osfile;
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} my_ioinfo;

extern __declspec(dllimport) char * __pioinfo[];
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#define IOINFO_L2E 5
#define IOINFO_ARRAY_ELTS   (1 << IOINFO_L2E)
#define IOINFO_ARRAYS 64
#define _NHANDLE_           (IOINFO_ARRAYS * IOINFO_ARRAY_ELTS)
#define FOPEN 0x01
#define _NO_CONSOLE_FILENO (intptr_t)-2

/* This function emulates what the windows CRT does to validate file handles */
int
_PyVerify_fd(int fd)
{
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    const int i1 = fd >> IOINFO_L2E;
    const int i2 = fd & ((1 << IOINFO_L2E) - 1);

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    static size_t sizeof_ioinfo = 0;
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    /* Determine the actual size of the ioinfo structure,
     * as used by the CRT loaded in memory
     */
    if (sizeof_ioinfo == 0 && __pioinfo[0] != NULL) {
        sizeof_ioinfo = _msize(__pioinfo[0]) / IOINFO_ARRAY_ELTS;
    }
    if (sizeof_ioinfo == 0) {
        /* This should not happen... */
        goto fail;
    }

    /* See that it isn't a special CLEAR fileno */
    if (fd != _NO_CONSOLE_FILENO) {
        /* Microsoft CRT would check that 0<=fd<_nhandle but we can't do that.  Instead
         * we check pointer validity and other info
         */
        if (0 <= i1 && i1 < IOINFO_ARRAYS && __pioinfo[i1] != NULL) {
            /* finally, check that the file is open */
            my_ioinfo* info = (my_ioinfo*)(__pioinfo[i1] + i2 * sizeof_ioinfo);
            if (info->osfile & FOPEN) {
                return 1;
            }
        }
    }
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  fail:
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    errno = EBADF;
    return 0;
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}

/* the special case of checking dup2.  The target fd must be in a sensible range */
static int
_PyVerify_fd_dup2(int fd1, int fd2)
{
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    if (!_PyVerify_fd(fd1))
        return 0;
    if (fd2 == _NO_CONSOLE_FILENO)
        return 0;
    if ((unsigned)fd2 < _NHANDLE_)
        return 1;
    else
        return 0;
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}
#else
/* dummy version. _PyVerify_fd() is already defined in fileobject.h */
#define _PyVerify_fd_dup2(A, B) (1)
#endif

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#ifdef MS_WINDOWS
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/* The following structure was copied from
   http://msdn.microsoft.com/en-us/library/ms791514.aspx as the required
   include doesn't seem to be present in the Windows SDK (at least as included
   with Visual Studio Express). */
typedef struct _REPARSE_DATA_BUFFER {
    ULONG ReparseTag;
    USHORT ReparseDataLength;
    USHORT Reserved;
    union {
        struct {
            USHORT SubstituteNameOffset;
            USHORT SubstituteNameLength;
            USHORT PrintNameOffset;
            USHORT PrintNameLength;
            ULONG Flags;
            WCHAR PathBuffer[1];
        } SymbolicLinkReparseBuffer;

        struct {
            USHORT SubstituteNameOffset;
            USHORT  SubstituteNameLength;
            USHORT  PrintNameOffset;
            USHORT  PrintNameLength;
            WCHAR  PathBuffer[1];
        } MountPointReparseBuffer;

        struct {
            UCHAR  DataBuffer[1];
        } GenericReparseBuffer;
    };
} REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;

#define REPARSE_DATA_BUFFER_HEADER_SIZE  FIELD_OFFSET(REPARSE_DATA_BUFFER,\
                                                      GenericReparseBuffer)
#define MAXIMUM_REPARSE_DATA_BUFFER_SIZE  ( 16 * 1024 )

static int
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win32_get_reparse_tag(HANDLE reparse_point_handle, ULONG *reparse_tag)
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{
    char target_buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
    REPARSE_DATA_BUFFER *rdb = (REPARSE_DATA_BUFFER *)target_buffer;
    DWORD n_bytes_returned;

    if (0 == DeviceIoControl(
        reparse_point_handle,
        FSCTL_GET_REPARSE_POINT,
        NULL, 0, /* in buffer */
        target_buffer, sizeof(target_buffer),
        &n_bytes_returned,
        NULL)) /* we're not using OVERLAPPED_IO */
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        return FALSE;
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    if (reparse_tag)
        *reparse_tag = rdb->ReparseTag;

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    return TRUE;
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}
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static int
win32_warn_bytes_api()
{
    return PyErr_WarnEx(PyExc_DeprecationWarning,
        "The Windows bytes API has been deprecated, "
        "use Unicode filenames instead",
        1);
}

static PyObject*
win32_decode_filename(PyObject *obj)
{
    PyObject *unicode;
    if (PyUnicode_Check(obj)) {
        if (PyUnicode_READY(obj))
            return NULL;
        Py_INCREF(obj);
        return obj;
    }
    if (!PyUnicode_FSDecoder(obj, &unicode))
        return NULL;
    if (win32_warn_bytes_api()) {
        Py_DECREF(unicode);
        return NULL;
    }
    return unicode;
}
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#endif /* MS_WINDOWS */
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/* Return a dictionary corresponding to the POSIX environment table */
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#ifdef WITH_NEXT_FRAMEWORK
/* On Darwin/MacOSX a shared library or framework has no access to
** environ directly, we must obtain it with _NSGetEnviron().
*/
#include <crt_externs.h>
static char **environ;
#elif !defined(_MSC_VER) && ( !defined(__WATCOMC__) || defined(__QNX__) )
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extern char **environ;
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#endif /* !_MSC_VER */
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static PyObject *
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convertenviron(void)
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{
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    PyObject *d;
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#ifdef MS_WINDOWS
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    wchar_t **e;
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#else
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    char **e;
#endif
#if defined(PYOS_OS2)
    APIRET rc;
    char   buffer[1024]; /* OS/2 Provides a Documented Max of 1024 Chars */
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#endif
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    d = PyDict_New();
    if (d == NULL)
        return NULL;
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#ifdef WITH_NEXT_FRAMEWORK
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    if (environ == NULL)
        environ = *_NSGetEnviron();
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#endif
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#ifdef MS_WINDOWS
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    /* _wenviron must be initialized in this way if the program is started
       through main() instead of wmain(). */
    _wgetenv(L"");
    if (_wenviron == NULL)
        return d;
    /* This part ignores errors */
    for (e = _wenviron; *e != NULL; e++) {
        PyObject *k;
        PyObject *v;
        wchar_t *p = wcschr(*e, L'=');
        if (p == NULL)
            continue;
        k = PyUnicode_FromWideChar(*e, (Py_ssize_t)(p-*e));
        if (k == NULL) {
            PyErr_Clear();
            continue;
        }
        v = PyUnicode_FromWideChar(p+1, wcslen(p+1));
        if (v == NULL) {
            PyErr_Clear();
            Py_DECREF(k);
            continue;
        }
        if (PyDict_GetItem(d, k) == NULL) {
            if (PyDict_SetItem(d, k, v) != 0)
                PyErr_Clear();
        }
        Py_DECREF(k);
        Py_DECREF(v);
    }
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#else
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    if (environ == NULL)
        return d;
    /* This part ignores errors */
    for (e = environ; *e != NULL; e++) {
        PyObject *k;
        PyObject *v;
        char *p = strchr(*e, '=');
        if (p == NULL)
            continue;
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        k = PyBytes_FromStringAndSize(*e, (int)(p-*e));
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        if (k == NULL) {
            PyErr_Clear();
            continue;
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        }
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        v = PyBytes_FromStringAndSize(p+1, strlen(p+1));
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        if (v == NULL) {
            PyErr_Clear();
            Py_DECREF(k);
            continue;
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        }
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        if (PyDict_GetItem(d, k) == NULL) {
            if (PyDict_SetItem(d, k, v) != 0)
                PyErr_Clear();
        }
        Py_DECREF(k);
        Py_DECREF(v);
    }
#endif
#if defined(PYOS_OS2)
    rc = DosQueryExtLIBPATH(buffer, BEGIN_LIBPATH);
    if (rc == NO_ERROR) { /* (not a type, envname is NOT 'BEGIN_LIBPATH') */
        PyObject *v = PyBytes_FromString(buffer);
        PyDict_SetItemString(d, "BEGINLIBPATH", v);
        Py_DECREF(v);
    }
    rc = DosQueryExtLIBPATH(buffer, END_LIBPATH);
    if (rc == NO_ERROR) { /* (not a typo, envname is NOT 'END_LIBPATH') */
        PyObject *v = PyBytes_FromString(buffer);
        PyDict_SetItemString(d, "ENDLIBPATH", v);
        Py_DECREF(v);
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    }
#endif
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    return d;
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}

/* Set a POSIX-specific error from errno, and return NULL */

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static PyObject *
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posix_error(void)
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{
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    return PyErr_SetFromErrno(PyExc_OSError);
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}
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static PyObject *
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posix_error_with_filename(char* name)
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{
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    return PyErr_SetFromErrnoWithFilename(PyExc_OSError, name);
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}

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static PyObject *
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posix_error_with_allocated_filename(PyObject* name)
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{
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    PyObject *name_str, *rc;
    name_str = PyUnicode_DecodeFSDefaultAndSize(PyBytes_AsString(name),
                                                PyBytes_GET_SIZE(name));
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    Py_DECREF(name);
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    rc = PyErr_SetFromErrnoWithFilenameObject(PyExc_OSError,
                                              name_str);
    Py_XDECREF(name_str);
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    return rc;
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}

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#ifdef MS_WINDOWS
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static PyObject *
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win32_error(char* function, const char* filename)
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{
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    /* XXX We should pass the function name along in the future.
       (winreg.c also wants to pass the function name.)
       This would however require an additional param to the
       Windows error object, which is non-trivial.
    */
    errno = GetLastError();
    if (filename)
        return PyErr_SetFromWindowsErrWithFilename(errno, filename);
    else
        return PyErr_SetFromWindowsErr(errno);
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}
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static PyObject *
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win32_error_unicode(char* function, wchar_t* filename)
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{
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    /* XXX - see win32_error for comments on 'function' */
    errno = GetLastError();
    if (filename)
        return PyErr_SetFromWindowsErrWithUnicodeFilename(errno, filename);
    else
        return PyErr_SetFromWindowsErr(errno);
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}

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static PyObject *
win32_error_object(char* function, PyObject* filename)
{
    /* XXX - see win32_error for comments on 'function' */
    errno = GetLastError();
    if (filename)
        return PyErr_SetExcFromWindowsErrWithFilenameObject(
                    PyExc_WindowsError,
                    errno,
                    filename);
    else
        return PyErr_SetFromWindowsErr(errno);
}

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#endif /* MS_WINDOWS */
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#if defined(PYOS_OS2)
/**********************************************************************
 *         Helper Function to Trim and Format OS/2 Messages
 **********************************************************************/
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static void
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os2_formatmsg(char *msgbuf, int msglen, char *reason)
{
    msgbuf[msglen] = '\0'; /* OS/2 Doesn't Guarantee a Terminator */

    if (strlen(msgbuf) > 0) { /* If Non-Empty Msg, Trim CRLF */
        char *lastc = &msgbuf[ strlen(msgbuf)-1 ];

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        while (lastc > msgbuf && isspace(Py_CHARMASK(*lastc)))
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            *lastc-- = '\0'; /* Trim Trailing Whitespace (CRLF) */
    }

    /* Add Optional Reason Text */
    if (reason) {
        strcat(msgbuf, " : ");
        strcat(msgbuf, reason);
    }
}

/**********************************************************************
 *             Decode an OS/2 Operating System Error Code
 *
 * A convenience function to lookup an OS/2 error code and return a
 * text message we can use to raise a Python exception.
 *
 * Notes:
 *   The messages for errors returned from the OS/2 kernel reside in
 *   the file OSO001.MSG in the \OS2 directory hierarchy.
 *
 **********************************************************************/
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static char *
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os2_strerror(char *msgbuf, int msgbuflen, int errorcode, char *reason)
{
    APIRET rc;
    ULONG  msglen;

    /* Retrieve Kernel-Related Error Message from OSO001.MSG File */
    Py_BEGIN_ALLOW_THREADS
    rc = DosGetMessage(NULL, 0, msgbuf, msgbuflen,
                       errorcode, "oso001.msg", &msglen);
    Py_END_ALLOW_THREADS

    if (rc == NO_ERROR)
        os2_formatmsg(msgbuf, msglen, reason);
    else
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        PyOS_snprintf(msgbuf, msgbuflen,
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                      "unknown OS error #%d", errorcode);
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    return msgbuf;
}

/* Set an OS/2-specific error and return NULL.  OS/2 kernel
   errors are not in a global variable e.g. 'errno' nor are
   they congruent with posix error numbers. */

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static PyObject *
os2_error(int code)
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{
    char text[1024];
    PyObject *v;

    os2_strerror(text, sizeof(text), code, "");

    v = Py_BuildValue("(is)", code, text);
    if (v != NULL) {
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        PyErr_SetObject(PyExc_OSError, v);
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        Py_DECREF(v);
    }
    return NULL; /* Signal to Python that an Exception is Pending */
}

#endif /* OS2 */
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/* POSIX generic methods */

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static PyObject *
posix_fildes(PyObject *fdobj, int (*func)(int))
{
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    int fd;
    int res;
    fd = PyObject_AsFileDescriptor(fdobj);
    if (fd < 0)
        return NULL;
    if (!_PyVerify_fd(fd))
        return posix_error();
    Py_BEGIN_ALLOW_THREADS
    res = (*func)(fd);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
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}
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static PyObject *
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posix_1str(PyObject *args, char *format, int (*func)(const char*))
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{
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    PyObject *opath1 = NULL;
    char *path1;
    int res;
    if (!PyArg_ParseTuple(args, format,
                          PyUnicode_FSConverter, &opath1))
        return NULL;
    path1 = PyBytes_AsString(opath1);
    Py_BEGIN_ALLOW_THREADS
    res = (*func)(path1);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error_with_allocated_filename(opath1);
    Py_DECREF(opath1);
    Py_INCREF(Py_None);
    return Py_None;
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}

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static PyObject *
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posix_2str(PyObject *args,
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           char *format,
           int (*func)(const char *, const char *))
{
    PyObject *opath1 = NULL, *opath2 = NULL;
    char *path1, *path2;
    int res;
    if (!PyArg_ParseTuple(args, format,
                          PyUnicode_FSConverter, &opath1,
                          PyUnicode_FSConverter, &opath2)) {
        return NULL;
    }
    path1 = PyBytes_AsString(opath1);
    path2 = PyBytes_AsString(opath2);
    Py_BEGIN_ALLOW_THREADS
    res = (*func)(path1, path2);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath1);
    Py_DECREF(opath2);
    if (res != 0)
        /* XXX how to report both path1 and path2??? */
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
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}

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#ifdef MS_WINDOWS
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static PyObject*
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win32_1str(PyObject* args, char* func,
           char* format, BOOL (__stdcall *funcA)(LPCSTR),
           char* wformat, BOOL (__stdcall *funcW)(LPWSTR))
{
    PyObject *uni;
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    const char *ansi;
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    BOOL result;

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    if (PyArg_ParseTuple(args, wformat, &uni))
    {
        wchar_t *wstr = PyUnicode_AsUnicode(uni);
        if (wstr == NULL)
            return NULL;
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        Py_BEGIN_ALLOW_THREADS
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        result = funcW(wstr);
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        Py_END_ALLOW_THREADS
        if (!result)
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            return win32_error_object(func, uni);
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        Py_INCREF(Py_None);
        return Py_None;
    }
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    PyErr_Clear();

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    if (!PyArg_ParseTuple(args, format, &ansi))
        return NULL;
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    if (win32_warn_bytes_api())
        return NULL;
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    Py_BEGIN_ALLOW_THREADS
    result = funcA(ansi);
    Py_END_ALLOW_THREADS
    if (!result)
        return win32_error(func, ansi);
    Py_INCREF(Py_None);
    return Py_None;
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}

/* This is a reimplementation of the C library's chdir function,
   but one that produces Win32 errors instead of DOS error codes.
   chdir is essentially a wrapper around SetCurrentDirectory; however,
   it also needs to set "magic" environment variables indicating
   the per-drive current directory, which are of the form =<drive>: */
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static BOOL __stdcall
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win32_chdir(LPCSTR path)
{
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    char new_path[MAX_PATH+1];
    int result;
    char env[4] = "=x:";

    if(!SetCurrentDirectoryA(path))
        return FALSE;
    result = GetCurrentDirectoryA(MAX_PATH+1, new_path);
    if (!result)
        return FALSE;
    /* In the ANSI API, there should not be any paths longer
       than MAX_PATH. */
    assert(result <= MAX_PATH+1);
    if (strncmp(new_path, "\\\\", 2) == 0 ||
        strncmp(new_path, "//", 2) == 0)
        /* UNC path, nothing to do. */
        return TRUE;
    env[1] = new_path[0];
    return SetEnvironmentVariableA(env, new_path);
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}

/* The Unicode version differs from the ANSI version
   since the current directory might exceed MAX_PATH characters */
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static BOOL __stdcall
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win32_wchdir(LPCWSTR path)
{
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    wchar_t _new_path[MAX_PATH+1], *new_path = _new_path;
    int result;
    wchar_t env[4] = L"=x:";

    if(!SetCurrentDirectoryW(path))
        return FALSE;
    result = GetCurrentDirectoryW(MAX_PATH+1, new_path);
    if (!result)
        return FALSE;
    if (result > MAX_PATH+1) {
        new_path = malloc(result * sizeof(wchar_t));
        if (!new_path) {
            SetLastError(ERROR_OUTOFMEMORY);
            return FALSE;
        }
        result = GetCurrentDirectoryW(result, new_path);
        if (!result) {
            free(new_path);
            return FALSE;
        }
    }
    if (wcsncmp(new_path, L"\\\\", 2) == 0 ||
        wcsncmp(new_path, L"//", 2) == 0)
        /* UNC path, nothing to do. */
        return TRUE;
    env[1] = new_path[0];
    result = SetEnvironmentVariableW(env, new_path);
    if (new_path != _new_path)
        free(new_path);
    return result;
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}
#endif

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#ifdef MS_WINDOWS
/* The CRT of Windows has a number of flaws wrt. its stat() implementation:
   - time stamps are restricted to second resolution
   - file modification times suffer from forth-and-back conversions between
     UTC and local time
   Therefore, we implement our own stat, based on the Win32 API directly.
*/
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#define HAVE_STAT_NSEC 1
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struct win32_stat{
    int st_dev;
    __int64 st_ino;
    unsigned short st_mode;
    int st_nlink;
    int st_uid;
    int st_gid;
    int st_rdev;
    __int64 st_size;
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    time_t st_atime;
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    int st_atime_nsec;
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    time_t st_mtime;
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    int st_mtime_nsec;
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    time_t st_ctime;
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    int st_ctime_nsec;
};

static __int64 secs_between_epochs = 11644473600; /* Seconds between 1.1.1601 and 1.1.1970 */

static void
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FILE_TIME_to_time_t_nsec(FILETIME *in_ptr, time_t *time_out, int* nsec_out)
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{
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    /* XXX endianness. Shouldn't matter, as all Windows implementations are little-endian */
    /* Cannot simply cast and dereference in_ptr,
       since it might not be aligned properly */
    __int64 in;
    memcpy(&in, in_ptr, sizeof(in));
    *nsec_out = (int)(in % 10000000) * 100; /* FILETIME is in units of 100 nsec. */
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    *time_out = Py_SAFE_DOWNCAST((in / 10000000) - secs_between_epochs, __int64, time_t);
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}

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static void
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time_t_to_FILE_TIME(time_t time_in, int nsec_in, FILETIME *out_ptr)
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{
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    /* XXX endianness */
    __int64 out;
    out = time_in + secs_between_epochs;
    out = out * 10000000 + nsec_in / 100;
    memcpy(out_ptr, &out, sizeof(out));
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}

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/* Below, we *know* that ugo+r is 0444 */
#if _S_IREAD != 0400
#error Unsupported C library
#endif
static int
attributes_to_mode(DWORD attr)
{
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    int m = 0;
    if (attr & FILE_ATTRIBUTE_DIRECTORY)
        m |= _S_IFDIR | 0111; /* IFEXEC for user,group,other */
    else
        m |= _S_IFREG;
    if (attr & FILE_ATTRIBUTE_READONLY)
        m |= 0444;
    else
        m |= 0666;
    return m;
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}

static int
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attribute_data_to_stat(BY_HANDLE_FILE_INFORMATION *info, ULONG reparse_tag, struct win32_stat *result)
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{
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    memset(result, 0, sizeof(*result));
    result->st_mode = attributes_to_mode(info->dwFileAttributes);
    result->st_size = (((__int64)info->nFileSizeHigh)<<32) + info->nFileSizeLow;
    FILE_TIME_to_time_t_nsec(&info->ftCreationTime, &result->st_ctime, &result->st_ctime_nsec);
    FILE_TIME_to_time_t_nsec(&info->ftLastWriteTime, &result->st_mtime, &result->st_mtime_nsec);
    FILE_TIME_to_time_t_nsec(&info->ftLastAccessTime, &result->st_atime, &result->st_atime_nsec);
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    result->st_nlink = info->nNumberOfLinks;
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    result->st_ino = (((__int64)info->nFileIndexHigh)<<32) + info->nFileIndexLow;
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    if (reparse_tag == IO_REPARSE_TAG_SYMLINK) {
        /* first clear the S_IFMT bits */
        result->st_mode ^= (result->st_mode & 0170000);
        /* now set the bits that make this a symlink */
        result->st_mode |= 0120000;
    }
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    return 0;
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}

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static BOOL
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attributes_from_dir(LPCSTR pszFile, BY_HANDLE_FILE_INFORMATION *info, ULONG *reparse_tag)
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{
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    HANDLE hFindFile;
    WIN32_FIND_DATAA FileData;
    hFindFile = FindFirstFileA(pszFile, &FileData);
    if (hFindFile == INVALID_HANDLE_VALUE)
        return FALSE;
    FindClose(hFindFile);
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    memset(info, 0, sizeof(*info));
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    *reparse_tag = 0;
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    info->dwFileAttributes = FileData.dwFileAttributes;
    info->ftCreationTime   = FileData.ftCreationTime;
    info->ftLastAccessTime = FileData.ftLastAccessTime;
    info->ftLastWriteTime  = FileData.ftLastWriteTime;
    info->nFileSizeHigh    = FileData.nFileSizeHigh;
    info->nFileSizeLow     = FileData.nFileSizeLow;
/*  info->nNumberOfLinks   = 1; */
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    if (FileData.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
        *reparse_tag = FileData.dwReserved0;
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    return TRUE;
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}

static BOOL
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attributes_from_dir_w(LPCWSTR pszFile, BY_HANDLE_FILE_INFORMATION *info, ULONG *reparse_tag)
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{
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    HANDLE hFindFile;
    WIN32_FIND_DATAW FileData;
    hFindFile = FindFirstFileW(pszFile, &FileData);
    if (hFindFile == INVALID_HANDLE_VALUE)
        return FALSE;
    FindClose(hFindFile);
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    memset(info, 0, sizeof(*info));
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    *reparse_tag = 0;
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    info->dwFileAttributes = FileData.dwFileAttributes;
    info->ftCreationTime   = FileData.ftCreationTime;
    info->ftLastAccessTime = FileData.ftLastAccessTime;
    info->ftLastWriteTime  = FileData.ftLastWriteTime;
    info->nFileSizeHigh    = FileData.nFileSizeHigh;
    info->nFileSizeLow     = FileData.nFileSizeLow;
/*  info->nNumberOfLinks   = 1; */
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    if (FileData.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
        *reparse_tag = FileData.dwReserved0;
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    return TRUE;
}

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/* Grab GetFinalPathNameByHandle dynamically from kernel32 */
static int has_GetFinalPathNameByHandle = 0;
static DWORD (CALLBACK *Py_GetFinalPathNameByHandleW)(HANDLE, LPWSTR, DWORD,
                                                      DWORD);
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static int
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check_GetFinalPathNameByHandle()
{
    HINSTANCE hKernel32;
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    DWORD (CALLBACK *Py_GetFinalPathNameByHandleA)(HANDLE, LPSTR, DWORD,
                                                   DWORD);

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    /* only recheck */
    if (!has_GetFinalPathNameByHandle)
    {
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        hKernel32 = GetModuleHandleW(L"KERNEL32");
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        *(FARPROC*)&Py_GetFinalPathNameByHandleA = GetProcAddress(hKernel32,
                                                "GetFinalPathNameByHandleA");
        *(FARPROC*)&Py_GetFinalPathNameByHandleW = GetProcAddress(hKernel32,
                                                "GetFinalPathNameByHandleW");
        has_GetFinalPathNameByHandle = Py_GetFinalPathNameByHandleA &&
                                       Py_GetFinalPathNameByHandleW;
    }
    return has_GetFinalPathNameByHandle;
}

static BOOL
get_target_path(HANDLE hdl, wchar_t **target_path)
{
    int buf_size, result_length;
    wchar_t *buf;

    /* We have a good handle to the target, use it to determine
       the target path name (then we'll call lstat on it). */
    buf_size = Py_GetFinalPathNameByHandleW(hdl, 0, 0,
                                            VOLUME_NAME_DOS);
    if(!buf_size)
        return FALSE;

    buf = (wchar_t *)malloc((buf_size+1)*sizeof(wchar_t));
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    if (!buf) {
        SetLastError(ERROR_OUTOFMEMORY);
        return FALSE;
    }

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    result_length = Py_GetFinalPathNameByHandleW(hdl,
                       buf, buf_size, VOLUME_NAME_DOS);

    if(!result_length) {
        free(buf);
        return FALSE;
    }

    if(!CloseHandle(hdl)) {
        free(buf);
        return FALSE;
    }

    buf[result_length] = 0;

    *target_path = buf;
    return TRUE;
}
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static int
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win32_xstat_impl_w(const wchar_t *path, struct win32_stat *result,
                   BOOL traverse);
static int
win32_xstat_impl(const char *path, struct win32_stat *result,
                 BOOL traverse)
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{
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    int code;
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    HANDLE hFile, hFile2;
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    BY_HANDLE_FILE_INFORMATION info;
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    ULONG reparse_tag = 0;
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    wchar_t *target_path;
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    const char *dot;

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    if(!check_GetFinalPathNameByHandle()) {
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        /* If the OS doesn't have GetFinalPathNameByHandle, don't
           traverse reparse point. */
        traverse = FALSE;
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    }

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    hFile = CreateFileA(
        path,
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        FILE_READ_ATTRIBUTES, /* desired access */
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        0, /* share mode */
        NULL, /* security attributes */
        OPEN_EXISTING,
        /* FILE_FLAG_BACKUP_SEMANTICS is required to open a directory */
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        /* FILE_FLAG_OPEN_REPARSE_POINT does not follow the symlink.
           Because of this, calls like GetFinalPathNameByHandle will return
           the symlink path agin and not the actual final path. */
        FILE_ATTRIBUTE_NORMAL|FILE_FLAG_BACKUP_SEMANTICS|
            FILE_FLAG_OPEN_REPARSE_POINT,
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        NULL);

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    if (hFile == INVALID_HANDLE_VALUE) {
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        /* Either the target doesn't exist, or we don't have access to
           get a handle to it. If the former, we need to return an error.
           If the latter, we can use attributes_from_dir. */
        if (GetLastError() != ERROR_SHARING_VIOLATION)
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            return -1;
        /* Could not get attributes on open file. Fall back to
           reading the directory. */
        if (!attributes_from_dir(path, &info, &reparse_tag))
            /* Very strange. This should not fail now */
            return -1;
        if (info.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
            if (traverse) {
                /* Should traverse, but could not open reparse point handle */
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                SetLastError(ERROR_SHARING_VIOLATION);
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                return -1;
            }
        }
    } else {
        if (!GetFileInformationByHandle(hFile, &info)) {
            CloseHandle(hFile);
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            return -1;
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        }
        if (info.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
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            if (!win32_get_reparse_tag(hFile, &reparse_tag))
                return -1;

            /* Close the outer open file handle now that we're about to
               reopen it with different flags. */
            if (!CloseHandle(hFile))
                return -1;

1276
            if (traverse) {
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                /* In order to call GetFinalPathNameByHandle we need to open
                   the file without the reparse handling flag set. */
                hFile2 = CreateFileA(
                           path, FILE_READ_ATTRIBUTES, FILE_SHARE_READ,
                           NULL, OPEN_EXISTING,
                           FILE_ATTRIBUTE_NORMAL|FILE_FLAG_BACKUP_SEMANTICS,
                           NULL);
                if (hFile2 == INVALID_HANDLE_VALUE)
                    return -1;

                if (!get_target_path(hFile2, &target_path))
                    return -1;

                code = win32_xstat_impl_w(target_path, result, FALSE);
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                free(target_path);
                return code;
1293
            }
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        } else
            CloseHandle(hFile);
1296
    }
1297
    attribute_data_to_stat(&info, reparse_tag, result);
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    /* Set S_IEXEC if it is an .exe, .bat, ... */
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    dot = strrchr(path, '.');
    if (dot) {
1302 1303
        if (stricmp(dot, ".bat") == 0 || stricmp(dot, ".cmd") == 0 ||
            stricmp(dot, ".exe") == 0 || stricmp(dot, ".com") == 0)
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            result->st_mode |= 0111;
    }
1306
    return 0;
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}

static int
1310 1311
win32_xstat_impl_w(const wchar_t *path, struct win32_stat *result,
                   BOOL traverse)
1312 1313
{
    int code;
1314
    HANDLE hFile, hFile2;
1315
    BY_HANDLE_FILE_INFORMATION info;
1316
    ULONG reparse_tag = 0;
1317
    wchar_t *target_path;
1318
    const wchar_t *dot;
1319

1320
    if(!check_GetFinalPathNameByHandle()) {
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        /* If the OS doesn't have GetFinalPathNameByHandle, don't
           traverse reparse point. */
        traverse = FALSE;
1324 1325
    }

1326
    hFile = CreateFileW(
1327
        path,
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        FILE_READ_ATTRIBUTES, /* desired access */
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        0, /* share mode */
        NULL, /* security attributes */
        OPEN_EXISTING,
        /* FILE_FLAG_BACKUP_SEMANTICS is required to open a directory */
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        /* FILE_FLAG_OPEN_REPARSE_POINT does not follow the symlink.
           Because of this, calls like GetFinalPathNameByHandle will return
           the symlink path agin and not the actual final path. */
1336
        FILE_ATTRIBUTE_NORMAL|FILE_FLAG_BACKUP_SEMANTICS|
1337
            FILE_FLAG_OPEN_REPARSE_POINT,
1338
        NULL);
1339

1340
    if (hFile == INVALID_HANDLE_VALUE) {
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        /* Either the target doesn't exist, or we don't have access to
           get a handle to it. If the former, we need to return an error.
           If the latter, we can use attributes_from_dir. */
1344
        if (GetLastError() != ERROR_SHARING_VIOLATION)
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            return -1;
        /* Could not get attributes on open file. Fall back to
           reading the directory. */
        if (!attributes_from_dir_w(path, &info, &reparse_tag))
            /* Very strange. This should not fail now */
            return -1;
        if (info.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
            if (traverse) {
                /* Should traverse, but could not open reparse point handle */
1354
                SetLastError(ERROR_SHARING_VIOLATION);
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                return -1;
            }
        }
    } else {
        if (!GetFileInformationByHandle(hFile, &info)) {
            CloseHandle(hFile);
1361
            return -1;
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        }
        if (info.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
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            if (!win32_get_reparse_tag(hFile, &reparse_tag))
                return -1;

            /* Close the outer open file handle now that we're about to
               reopen it with different flags. */
            if (!CloseHandle(hFile))
                return -1;

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            if (traverse) {
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                /* In order to call GetFinalPathNameByHandle we need to open
                   the file without the reparse handling flag set. */
                hFile2 = CreateFileW(
                           path, FILE_READ_ATTRIBUTES, FILE_SHARE_READ,
                           NULL, OPEN_EXISTING,
                           FILE_ATTRIBUTE_NORMAL|FILE_FLAG_BACKUP_SEMANTICS,
                           NULL);
                if (hFile2 == INVALID_HANDLE_VALUE)
                    return -1;

                if (!get_target_path(hFile2, &target_path))
                    return -1;

                code = win32_xstat_impl_w(target_path, result, FALSE);
1387 1388
                free(target_path);
                return code;
1389
            }
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        } else
            CloseHandle(hFile);
1392
    }
1393
    attribute_data_to_stat(&info, reparse_tag, result);
1394

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    /* Set S_IEXEC if it is an .exe, .bat, ... */
    dot = wcsrchr(path, '.');
    if (dot) {
        if (_wcsicmp(dot, L".bat") == 0 || _wcsicmp(dot, L".cmd") == 0 ||
            _wcsicmp(dot, L".exe") == 0 || _wcsicmp(dot, L".com") == 0)
            result->st_mode |= 0111;
1401
    }
1402
    return 0;
1403
}
1404

1405 1406 1407
static int
win32_xstat(const char *path, struct win32_stat *result, BOOL traverse)
{
1408 1409
    /* Protocol violation: we explicitly clear errno, instead of
       setting it to a POSIX error. Callers should use GetLastError. */
1410
    int code = win32_xstat_impl(path, result, traverse);
1411
    errno = 0;
1412
    return code;
1413 1414
}

1415
static int
1416
win32_xstat_w(const wchar_t *path, struct win32_stat *result, BOOL traverse)
1417
{
1418 1419
    /* Protocol violation: we explicitly clear errno, instead of
       setting it to a POSIX error. Callers should use GetLastError. */
1420
    int code = win32_xstat_impl_w(path, result, traverse);
1421 1422
    errno = 0;
    return code;
1423
}
1424
/* About the following functions: win32_lstat_w, win32_stat, win32_stat_w
1425

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   In Posix, stat automatically traverses symlinks and returns the stat
   structure for the target.  In Windows, the equivalent GetFileAttributes by
   default does not traverse symlinks and instead returns attributes for
   the symlink.
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   Therefore, win32_lstat will get the attributes traditionally, and
   win32_stat will first explicitly resolve the symlink target and then will
   call win32_lstat on that result.

Ezio Melotti's avatar
Ezio Melotti committed
1435
   The _w represent Unicode equivalents of the aforementioned ANSI functions. */
1436

1437
static int
1438 1439
win32_lstat(const char* path, struct win32_stat *result)
{
1440
    return win32_xstat(path, result, FALSE);
1441 1442 1443 1444 1445
}

static int
win32_lstat_w(const wchar_t* path, struct win32_stat *result)
{
1446
    return win32_xstat_w(path, result, FALSE);
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}

static int
win32_stat(const char* path, struct win32_stat *result)
{
1452
    return win32_xstat(path, result, TRUE);
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}

1455
static int
1456 1457
win32_stat_w(const wchar_t* path, struct win32_stat *result)
{
1458
    return win32_xstat_w(path, result, TRUE);
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}

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static int
win32_fstat(int file_number, struct win32_stat *result)
{
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    BY_HANDLE_FILE_INFORMATION info;
    HANDLE h;
    int type;

    h = (HANDLE)_get_osfhandle(file_number);

    /* Protocol violation: we explicitly clear errno, instead of
       setting it to a POSIX error. Callers should use GetLastError. */
    errno = 0;

    if (h == INVALID_HANDLE_VALUE) {
        /* This is really a C library error (invalid file handle).
           We set the Win32 error to the closes one matching. */
        SetLastError(ERROR_INVALID_HANDLE);
        return -1;
    }
    memset(result, 0, sizeof(*result));

    type = GetFileType(h);
    if (type == FILE_TYPE_UNKNOWN) {
        DWORD error = GetLastError();
        if (error != 0) {
1486
            return -1;
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        }
        /* else: valid but unknown file */
    }

    if (type != FILE_TYPE_DISK) {
        if (type == FILE_TYPE_CHAR)
            result->st_mode = _S_IFCHR;
        else if (type == FILE_TYPE_PIPE)
            result->st_mode = _S_IFIFO;
        return 0;
    }

    if (!GetFileInformationByHandle(h, &info)) {
        return -1;
    }

1503
    attribute_data_to_stat(&info, 0, result);
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    /* specific to fstat() */
    result->st_ino = (((__int64)info.nFileIndexHigh)<<32) + info.nFileIndexLow;
    return 0;
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}

#endif /* MS_WINDOWS */

1511
PyDoc_STRVAR(stat_result__doc__,
1512 1513
"stat_result: Result from stat or lstat.\n\n\
This object may be accessed either as a tuple of\n\
Fred Drake's avatar
Fred Drake committed
1514
  (mode, ino, dev, nlink, uid, gid, size, atime, mtime, ctime)\n\
1515 1516
or via the attributes st_mode, st_ino, st_dev, st_nlink, st_uid, and so on.\n\
\n\
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Posix/windows: If your platform supports st_blksize, st_blocks, st_rdev,\n\
or st_flags, they are available as attributes only.\n\
1519
\n\
1520
See os.stat for more information.");
1521 1522

static PyStructSequence_Field stat_result_fields[] = {
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    {"st_mode",    "protection bits"},
    {"st_ino",     "inode"},
    {"st_dev",     "device"},
    {"st_nlink",   "number of hard links"},
    {"st_uid",     "user ID of owner"},
    {"st_gid",     "group ID of owner"},
    {"st_size",    "total size, in bytes"},
    /* The NULL is replaced with PyStructSequence_UnnamedField later. */
    {NULL,   "integer time of last access"},
    {NULL,   "integer time of last modification"},
    {NULL,   "integer time of last change"},
    {"st_atime",   "time of last access"},
    {"st_mtime",   "time of last modification"},
    {"st_ctime",   "time of last change"},
1537
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1538
    {"st_blksize", "blocksize for filesystem I/O"},
1539
#endif
1540
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
1541
    {"st_blocks",  "number of blocks allocated"},
1542
#endif
1543
#ifdef HAVE_STRUCT_STAT_ST_RDEV
1544
    {"st_rdev",    "device type (if inode device)"},
1545 1546
#endif
#ifdef HAVE_STRUCT_STAT_ST_FLAGS
1547
    {"st_flags",   "user defined flags for file"},
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#endif
#ifdef HAVE_STRUCT_STAT_ST_GEN
1550
    {"st_gen",    "generation number"},
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#endif
#ifdef HAVE_STRUCT_STAT_ST_BIRTHTIME
1553
    {"st_birthtime",   "time of creation"},
1554
#endif
1555
    {0}
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};

1558
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1559
#define ST_BLKSIZE_IDX 13
1560
#else
1561
#define ST_BLKSIZE_IDX 12
1562 1563
#endif

1564
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
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#define ST_BLOCKS_IDX (ST_BLKSIZE_IDX+1)
#else
#define ST_BLOCKS_IDX ST_BLKSIZE_IDX
#endif

1570
#ifdef HAVE_STRUCT_STAT_ST_RDEV
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#define ST_RDEV_IDX (ST_BLOCKS_IDX+1)
#else
#define ST_RDEV_IDX ST_BLOCKS_IDX
#endif

1576 1577 1578 1579 1580 1581
#ifdef HAVE_STRUCT_STAT_ST_FLAGS
#define ST_FLAGS_IDX (ST_RDEV_IDX+1)
#else
#define ST_FLAGS_IDX ST_RDEV_IDX
#endif

1582
#ifdef HAVE_STRUCT_STAT_ST_GEN
1583
#define ST_GEN_IDX (ST_FLAGS_IDX+1)
1584
#else
1585
#define ST_GEN_IDX ST_FLAGS_IDX
1586 1587 1588 1589 1590 1591 1592 1593
#endif

#ifdef HAVE_STRUCT_STAT_ST_BIRTHTIME
#define ST_BIRTHTIME_IDX (ST_GEN_IDX+1)
#else
#define ST_BIRTHTIME_IDX ST_GEN_IDX
#endif

1594
static PyStructSequence_Desc stat_result_desc = {
1595 1596 1597 1598
    "stat_result", /* name */
    stat_result__doc__, /* doc */
    stat_result_fields,
    10
1599 1600
};

1601
PyDoc_STRVAR(statvfs_result__doc__,
1602 1603
"statvfs_result: Result from statvfs or fstatvfs.\n\n\
This object may be accessed either as a tuple of\n\
Fred Drake's avatar
Fred Drake committed
1604
  (bsize, frsize, blocks, bfree, bavail, files, ffree, favail, flag, namemax),\n\
1605
or via the attributes f_bsize, f_frsize, f_blocks, f_bfree, and so on.\n\
1606
\n\
1607
See os.statvfs for more information.");
1608 1609

static PyStructSequence_Field statvfs_result_fields[] = {
1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620
    {"f_bsize",  },
    {"f_frsize", },
    {"f_blocks", },
    {"f_bfree",  },
    {"f_bavail", },
    {"f_files",  },
    {"f_ffree",  },
    {"f_favail", },
    {"f_flag",   },
    {"f_namemax",},
    {0}
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};

static PyStructSequence_Desc statvfs_result_desc = {
1624 1625 1626 1627
    "statvfs_result", /* name */
    statvfs_result__doc__, /* doc */
    statvfs_result_fields,
    10
1628 1629
};

1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656
#if defined(HAVE_WAITID) && !defined(__APPLE__)
PyDoc_STRVAR(waitid_result__doc__,
"waitid_result: Result from waitid.\n\n\
This object may be accessed either as a tuple of\n\
  (si_pid, si_uid, si_signo, si_status, si_code),\n\
or via the attributes si_pid, si_uid, and so on.\n\
\n\
See os.waitid for more information.");

static PyStructSequence_Field waitid_result_fields[] = {
    {"si_pid",  },
    {"si_uid", },
    {"si_signo", },
    {"si_status",  },
    {"si_code", },
    {0}
};

static PyStructSequence_Desc waitid_result_desc = {
    "waitid_result", /* name */
    waitid_result__doc__, /* doc */
    waitid_result_fields,
    5
};
static PyTypeObject WaitidResultType;
#endif

1657
static int initialized;
1658 1659
static PyTypeObject StatResultType;
static PyTypeObject StatVFSResultType;
1660
#if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER)
1661
static PyTypeObject SchedParamType;
1662
#endif
1663 1664 1665 1666 1667
static newfunc structseq_new;

static PyObject *
statresult_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
1668 1669
    PyStructSequence *result;
    int i;
1670

1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684
    result = (PyStructSequence*)structseq_new(type, args, kwds);
    if (!result)
        return NULL;
    /* If we have been initialized from a tuple,
       st_?time might be set to None. Initialize it
       from the int slots.  */
    for (i = 7; i <= 9; i++) {
        if (result->ob_item[i+3] == Py_None) {
            Py_DECREF(Py_None);
            Py_INCREF(result->ob_item[i]);
            result->ob_item[i+3] = result->ob_item[i];
        }
    }
    return (PyObject*)result;
1685 1686 1687 1688 1689
}



/* If true, st_?time is float. */
1690
static int _stat_float_times = 1;
1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701

PyDoc_STRVAR(stat_float_times__doc__,
"stat_float_times([newval]) -> oldval\n\n\
Determine whether os.[lf]stat represents time stamps as float objects.\n\
If newval is True, future calls to stat() return floats, if it is False,\n\
future calls return ints. \n\
If newval is omitted, return the current setting.\n");

static PyObject*
stat_float_times(PyObject* self, PyObject *args)
{
1702 1703 1704 1705 1706 1707 1708 1709 1710
    int newval = -1;
    if (!PyArg_ParseTuple(args, "|i:stat_float_times", &newval))
        return NULL;
    if (newval == -1)
        /* Return old value */
        return PyBool_FromLong(_stat_float_times);
    _stat_float_times = newval;
    Py_INCREF(Py_None);
    return Py_None;
1711
}
1712

1713 1714 1715
static void
fill_time(PyObject *v, int index, time_t sec, unsigned long nsec)
{
1716
    PyObject *fval,*ival;
1717
#if SIZEOF_TIME_T > SIZEOF_LONG
1718
    ival = PyLong_FromLongLong((PY_LONG_LONG)sec);
1719
#else
1720
    ival = PyLong_FromLong((long)sec);
1721
#endif
1722 1723 1724 1725 1726 1727 1728 1729 1730 1731
    if (!ival)
        return;
    if (_stat_float_times) {
        fval = PyFloat_FromDouble(sec + 1e-9*nsec);
    } else {
        fval = ival;
        Py_INCREF(fval);
    }
    PyStructSequence_SET_ITEM(v, index, ival);
    PyStructSequence_SET_ITEM(v, index+3, fval);
1732 1733
}

1734
/* pack a system stat C structure into the Python stat tuple
1735 1736
   (used by posix_stat() and posix_fstat()) */
static PyObject*
1737
_pystat_fromstructstat(STRUCT_STAT *st)
1738
{
1739 1740 1741 1742
    unsigned long ansec, mnsec, cnsec;
    PyObject *v = PyStructSequence_New(&StatResultType);
    if (v == NULL)
        return NULL;
1743

1744
    PyStructSequence_SET_ITEM(v, 0, PyLong_FromLong((long)st->st_mode));
1745
#ifdef HAVE_LARGEFILE_SUPPORT
1746 1747
    PyStructSequence_SET_ITEM(v, 1,
                              PyLong_FromLongLong((PY_LONG_LONG)st->st_ino));
1748
#else
1749
    PyStructSequence_SET_ITEM(v, 1, PyLong_FromLong((long)st->st_ino));
1750 1751
#endif
#if defined(HAVE_LONG_LONG) && !defined(MS_WINDOWS)
1752 1753
    PyStructSequence_SET_ITEM(v, 2,
                              PyLong_FromLongLong((PY_LONG_LONG)st->st_dev));
1754
#else
1755
    PyStructSequence_SET_ITEM(v, 2, PyLong_FromLong((long)st->st_dev));
1756
#endif
1757 1758 1759
    PyStructSequence_SET_ITEM(v, 3, PyLong_FromLong((long)st->st_nlink));
    PyStructSequence_SET_ITEM(v, 4, PyLong_FromLong((long)st->st_uid));
    PyStructSequence_SET_ITEM(v, 5, PyLong_FromLong((long)st->st_gid));
1760
#ifdef HAVE_LARGEFILE_SUPPORT
1761 1762
    PyStructSequence_SET_ITEM(v, 6,
                              PyLong_FromLongLong((PY_LONG_LONG)st->st_size));
1763
#else
1764
    PyStructSequence_SET_ITEM(v, 6, PyLong_FromLong(st->st_size));
1765 1766 1767
#endif

#if defined(HAVE_STAT_TV_NSEC)
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    ansec = st->st_atim.tv_nsec;
    mnsec = st->st_mtim.tv_nsec;
    cnsec = st->st_ctim.tv_nsec;
1771
#elif defined(HAVE_STAT_TV_NSEC2)
1772 1773 1774
    ansec = st->st_atimespec.tv_nsec;
    mnsec = st->st_mtimespec.tv_nsec;
    cnsec = st->st_ctimespec.tv_nsec;
1775
#elif defined(HAVE_STAT_NSEC)
1776 1777 1778
    ansec = st->st_atime_nsec;
    mnsec = st->st_mtime_nsec;
    cnsec = st->st_ctime_nsec;
1779
#else
1780
    ansec = mnsec = cnsec = 0;
1781
#endif
1782 1783 1784
    fill_time(v, 7, st->st_atime, ansec);
    fill_time(v, 8, st->st_mtime, mnsec);
    fill_time(v, 9, st->st_ctime, cnsec);
1785

1786
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
1787 1788
    PyStructSequence_SET_ITEM(v, ST_BLKSIZE_IDX,
                              PyLong_FromLong((long)st->st_blksize));
1789
#endif
1790
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
1791 1792
    PyStructSequence_SET_ITEM(v, ST_BLOCKS_IDX,
                              PyLong_FromLong((long)st->st_blocks));
1793
#endif
1794
#ifdef HAVE_STRUCT_STAT_ST_RDEV
1795 1796
    PyStructSequence_SET_ITEM(v, ST_RDEV_IDX,
                              PyLong_FromLong((long)st->st_rdev));
1797
#endif
1798
#ifdef HAVE_STRUCT_STAT_ST_GEN
1799 1800
    PyStructSequence_SET_ITEM(v, ST_GEN_IDX,
                              PyLong_FromLong((long)st->st_gen));
1801 1802
#endif
#ifdef HAVE_STRUCT_STAT_ST_BIRTHTIME
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    {
      PyObject *val;
      unsigned long bsec,bnsec;
      bsec = (long)st->st_birthtime;
1807
#ifdef HAVE_STAT_TV_NSEC2
1808
      bnsec = st->st_birthtimespec.tv_nsec;
1809
#else
1810 1811 1812 1813 1814 1815 1816 1817 1818 1819
      bnsec = 0;
#endif
      if (_stat_float_times) {
        val = PyFloat_FromDouble(bsec + 1e-9*bnsec);
      } else {
        val = PyLong_FromLong((long)bsec);
      }
      PyStructSequence_SET_ITEM(v, ST_BIRTHTIME_IDX,
                                val);
    }
1820
#endif
1821
#ifdef HAVE_STRUCT_STAT_ST_FLAGS
1822 1823
    PyStructSequence_SET_ITEM(v, ST_FLAGS_IDX,
                              PyLong_FromLong((long)st->st_flags));
1824
#endif
1825

1826 1827 1828 1829
    if (PyErr_Occurred()) {
        Py_DECREF(v);
        return NULL;
    }
1830

1831
    return v;
1832 1833
}

Barry Warsaw's avatar
Barry Warsaw committed
1834
static PyObject *
1835
posix_do_stat(PyObject *self, PyObject *args,
1836
              char *format,
1837
#ifdef __VMS
1838
              int (*statfunc)(const char *, STRUCT_STAT *, ...),
1839
#else
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              int (*statfunc)(const char *, STRUCT_STAT *),
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#endif
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              char *wformat,
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              int (*wstatfunc)(const wchar_t *, STRUCT_STAT *))
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{
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    STRUCT_STAT st;
    PyObject *opath;
    char *path;
    int res;
    PyObject *result;
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#ifdef MS_WINDOWS
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    PyObject *po;
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    if (PyArg_ParseTuple(args, wformat, &po)) {
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        wchar_t *wpath = PyUnicode_AsUnicode(po);
        if (wpath == NULL)
            return NULL;
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        Py_BEGIN_ALLOW_THREADS
        res = wstatfunc(wpath, &st);
        Py_END_ALLOW_THREADS

        if (res != 0)
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            return win32_error_object("stat", po);
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        return _pystat_fromstructstat(&st);
    }
    /* Drop the argument parsing error as narrow strings
       are also valid. */
    PyErr_Clear();
#endif

    if (!PyArg_ParseTuple(args, format,
                          PyUnicode_FSConverter, &opath))
        return NULL;
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#ifdef MS_WINDOWS
    if (win32_warn_bytes_api()) {
        Py_DECREF(opath);
        return NULL;
    }
#endif
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    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = (*statfunc)(path, &st);
    Py_END_ALLOW_THREADS

    if (res != 0) {
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#ifdef MS_WINDOWS
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        result = win32_error("stat", path);
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#else
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        result = posix_error_with_filename(path);
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#endif
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    }
    else
        result = _pystat_fromstructstat(&st);
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    Py_DECREF(opath);
    return result;
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}

/* POSIX methods */

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PyDoc_STRVAR(posix_access__doc__,
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"access(path, mode) -> True if granted, False otherwise\n\n\
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Use the real uid/gid to test for access to a path.  Note that most\n\
operations will use the effective uid/gid, therefore this routine can\n\
be used in a suid/sgid environment to test if the invoking user has the\n\
specified access to the path.  The mode argument can be F_OK to test\n\
existence, or the inclusive-OR of R_OK, W_OK, and X_OK.");
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static PyObject *
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posix_access(PyObject *self, PyObject *args)
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{
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    const char *path;
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    int mode;

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#ifdef MS_WINDOWS
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    DWORD attr;
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    PyObject *po;
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    if (PyArg_ParseTuple(args, "Ui:access", &po, &mode)) {
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        wchar_t* wpath = PyUnicode_AsUnicode(po);
        if (wpath == NULL)
            return NULL;
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        Py_BEGIN_ALLOW_THREADS
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        attr = GetFileAttributesW(wpath);
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        Py_END_ALLOW_THREADS
        goto finish;
    }
    /* Drop the argument parsing error as narrow strings
       are also valid. */
    PyErr_Clear();
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    if (!PyArg_ParseTuple(args, "yi:access", &path, &mode))
        return NULL;
    if (win32_warn_bytes_api())
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        return NULL;
    Py_BEGIN_ALLOW_THREADS
    attr = GetFileAttributesA(path);
    Py_END_ALLOW_THREADS
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finish:
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    if (attr == 0xFFFFFFFF)
        /* File does not exist, or cannot read attributes */
        return PyBool_FromLong(0);
    /* Access is possible if either write access wasn't requested, or
       the file isn't read-only, or if it's a directory, as there are
       no read-only directories on Windows. */
    return PyBool_FromLong(!(mode & 2)
                           || !(attr & FILE_ATTRIBUTE_READONLY)
                           || (attr & FILE_ATTRIBUTE_DIRECTORY));
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#else
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    PyObject *opath;
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    int res;
    if (!PyArg_ParseTuple(args, "O&i:access",
                          PyUnicode_FSConverter, &opath, &mode))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = access(path, mode);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    return PyBool_FromLong(res == 0);
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#endif
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}

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#ifndef F_OK
#define F_OK 0
#endif
#ifndef R_OK
#define R_OK 4
#endif
#ifndef W_OK
#define W_OK 2
#endif
#ifndef X_OK
#define X_OK 1
#endif

#ifdef HAVE_TTYNAME
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PyDoc_STRVAR(posix_ttyname__doc__,
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"ttyname(fd) -> string\n\n\
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Return the name of the terminal device connected to 'fd'.");
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static PyObject *
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posix_ttyname(PyObject *self, PyObject *args)
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{
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    int id;
    char *ret;
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    if (!PyArg_ParseTuple(args, "i:ttyname", &id))
        return NULL;
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#if defined(__VMS)
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    /* file descriptor 0 only, the default input device (stdin) */
    if (id == 0) {
        ret = ttyname();
    }
    else {
        ret = NULL;
    }
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#else
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    ret = ttyname(id);
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#endif
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    if (ret == NULL)
        return posix_error();
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    return PyUnicode_DecodeFSDefault(ret);
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}
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#endif
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#ifdef HAVE_CTERMID
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PyDoc_STRVAR(posix_ctermid__doc__,
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"ctermid() -> string\n\n\
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Return the name of the controlling terminal for this process.");
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static PyObject *
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posix_ctermid(PyObject *self, PyObject *noargs)
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{
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    char *ret;
    char buffer[L_ctermid];
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#ifdef USE_CTERMID_R
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    ret = ctermid_r(buffer);
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#else
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    ret = ctermid(buffer);
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#endif
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    if (ret == NULL)
        return posix_error();
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    return PyUnicode_DecodeFSDefault(buffer);
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}
#endif

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PyDoc_STRVAR(posix_chdir__doc__,
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"chdir(path)\n\n\
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Change the current working directory to the specified path.");
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static PyObject *
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posix_chdir(PyObject *self, PyObject *args)
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{
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#ifdef MS_WINDOWS
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    return win32_1str(args, "chdir", "y:chdir", win32_chdir, "U:chdir", win32_wchdir);
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#elif defined(PYOS_OS2) && defined(PYCC_GCC)
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    return posix_1str(args, "O&:chdir", _chdir2);
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#elif defined(__VMS)
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    return posix_1str(args, "O&:chdir", (int (*)(const char *))chdir);
2041
#else
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    return posix_1str(args, "O&:chdir", chdir);
2043
#endif
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}

2046
#ifdef HAVE_FCHDIR
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PyDoc_STRVAR(posix_fchdir__doc__,
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"fchdir(fildes)\n\n\
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Change to the directory of the given file descriptor.  fildes must be\n\
2050
opened on a directory, not a file.");
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static PyObject *
posix_fchdir(PyObject *self, PyObject *fdobj)
{
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    return posix_fildes(fdobj, fchdir);
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}
#endif /* HAVE_FCHDIR */

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PyDoc_STRVAR(posix_chmod__doc__,
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"chmod(path, mode)\n\n\
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Change the access permissions of a file.");
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static PyObject *
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posix_chmod(PyObject *self, PyObject *args)
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{
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    PyObject *opath = NULL;
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    const char *path = NULL;
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    int i;
    int res;
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#ifdef MS_WINDOWS
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    DWORD attr;
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    PyObject *po;
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    if (PyArg_ParseTuple(args, "Ui|:chmod", &po, &i)) {
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        wchar_t *wpath = PyUnicode_AsUnicode(po);
        if (wpath == NULL)
            return NULL;
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        Py_BEGIN_ALLOW_THREADS
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        attr = GetFileAttributesW(wpath);
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        if (attr != 0xFFFFFFFF) {
            if (i & _S_IWRITE)
                attr &= ~FILE_ATTRIBUTE_READONLY;
            else
                attr |= FILE_ATTRIBUTE_READONLY;
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            res = SetFileAttributesW(wpath, attr);
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        }
        else
            res = 0;
        Py_END_ALLOW_THREADS
        if (!res)
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            return win32_error_object("chmod", po);
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        Py_INCREF(Py_None);
        return Py_None;
    }
    /* Drop the argument parsing error as narrow strings
       are also valid. */
    PyErr_Clear();

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    if (!PyArg_ParseTuple(args, "yi:chmod", &path, &i))
        return NULL;
    if (win32_warn_bytes_api())
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        return NULL;
    Py_BEGIN_ALLOW_THREADS
    attr = GetFileAttributesA(path);
    if (attr != 0xFFFFFFFF) {
        if (i & _S_IWRITE)
            attr &= ~FILE_ATTRIBUTE_READONLY;
        else
            attr |= FILE_ATTRIBUTE_READONLY;
        res = SetFileAttributesA(path, attr);
    }
    else
        res = 0;
    Py_END_ALLOW_THREADS
    if (!res) {
        win32_error("chmod", path);
        return NULL;
    }
    Py_INCREF(Py_None);
    return Py_None;
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#else /* MS_WINDOWS */
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    if (!PyArg_ParseTuple(args, "O&i:chmod", PyUnicode_FSConverter,
                          &opath, &i))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = chmod(path, i);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error_with_allocated_filename(opath);
    Py_DECREF(opath);
    Py_INCREF(Py_None);
    return Py_None;
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#endif
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}

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#ifdef HAVE_FCHMOD
PyDoc_STRVAR(posix_fchmod__doc__,
"fchmod(fd, mode)\n\n\
Change the access permissions of the file given by file\n\
descriptor fd.");

static PyObject *
posix_fchmod(PyObject *self, PyObject *args)
{
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    int fd, mode, res;
    if (!PyArg_ParseTuple(args, "ii:fchmod", &fd, &mode))
        return NULL;
    Py_BEGIN_ALLOW_THREADS
    res = fchmod(fd, mode);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
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}
#endif /* HAVE_FCHMOD */

#ifdef HAVE_LCHMOD
PyDoc_STRVAR(posix_lchmod__doc__,
"lchmod(path, mode)\n\n\
Change the access permissions of a file. If path is a symlink, this\n\
affects the link itself rather than the target.");

static PyObject *
posix_lchmod(PyObject *self, PyObject *args)
{
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    PyObject *opath;
    char *path;
    int i;
    int res;
    if (!PyArg_ParseTuple(args, "O&i:lchmod", PyUnicode_FSConverter,
                          &opath, &i))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = lchmod(path, i);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error_with_allocated_filename(opath);
    Py_DECREF(opath);
    Py_RETURN_NONE;
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}
#endif /* HAVE_LCHMOD */

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#ifdef HAVE_CHFLAGS
PyDoc_STRVAR(posix_chflags__doc__,
"chflags(path, flags)\n\n\
Set file flags.");

static PyObject *
posix_chflags(PyObject *self, PyObject *args)
{
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    PyObject *opath;
    char *path;
    unsigned long flags;
    int res;
    if (!PyArg_ParseTuple(args, "O&k:chflags",
                          PyUnicode_FSConverter, &opath, &flags))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = chflags(path, flags);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error_with_allocated_filename(opath);
    Py_DECREF(opath);
    Py_INCREF(Py_None);
    return Py_None;
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}
#endif /* HAVE_CHFLAGS */

#ifdef HAVE_LCHFLAGS
PyDoc_STRVAR(posix_lchflags__doc__,
"lchflags(path, flags)\n\n\
Set file flags.\n\
This function will not follow symbolic links.");

static PyObject *
posix_lchflags(PyObject *self, PyObject *args)
{
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    PyObject *opath;
    char *path;
    unsigned long flags;
    int res;
    if (!PyArg_ParseTuple(args, "O&k:lchflags",
                          PyUnicode_FSConverter, &opath, &flags))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = lchflags(path, flags);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error_with_allocated_filename(opath);
    Py_DECREF(opath);
    Py_INCREF(Py_None);
    return Py_None;
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}
#endif /* HAVE_LCHFLAGS */

2241
#ifdef HAVE_CHROOT
2242
PyDoc_STRVAR(posix_chroot__doc__,
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2243
"chroot(path)\n\n\
2244
Change root directory to path.");
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static PyObject *
posix_chroot(PyObject *self, PyObject *args)
{
2249
    return posix_1str(args, "O&:chroot", chroot);
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}
#endif

2253
#ifdef HAVE_FSYNC
2254
PyDoc_STRVAR(posix_fsync__doc__,
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2255
"fsync(fildes)\n\n\
2256
force write of file with filedescriptor to disk.");
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static PyObject *
2259
posix_fsync(PyObject *self, PyObject *fdobj)
2260
{
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    return posix_fildes(fdobj, fsync);
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}
#endif /* HAVE_FSYNC */

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#ifdef HAVE_SYNC
PyDoc_STRVAR(posix_sync__doc__,
"sync()\n\n\
Force write of everything to disk.");

static PyObject *
posix_sync(PyObject *self, PyObject *noargs)
{
    Py_BEGIN_ALLOW_THREADS
    sync();
    Py_END_ALLOW_THREADS
    Py_RETURN_NONE;
}
#endif

2280
#ifdef HAVE_FDATASYNC
2281

2282
#ifdef __hpux
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extern int fdatasync(int); /* On HP-UX, in libc but not in unistd.h */
#endif

2286
PyDoc_STRVAR(posix_fdatasync__doc__,
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2287
"fdatasync(fildes)\n\n\
2288
force write of file with filedescriptor to disk.\n\
2289
 does not force update of metadata.");
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static PyObject *
2292
posix_fdatasync(PyObject *self, PyObject *fdobj)
2293
{
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2294
    return posix_fildes(fdobj, fdatasync);
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}
#endif /* HAVE_FDATASYNC */


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2299
#ifdef HAVE_CHOWN
2300
PyDoc_STRVAR(posix_chown__doc__,
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2301
"chown(path, uid, gid)\n\n\
2302
Change the owner and group id of path to the numeric uid and gid.");
2303

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static PyObject *
2305
posix_chown(PyObject *self, PyObject *args)
2306
{
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    PyObject *opath;
    char *path;
    long uid, gid;
    int res;
    if (!PyArg_ParseTuple(args, "O&ll:chown",
                          PyUnicode_FSConverter, &opath,
                          &uid, &gid))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = chown(path, (uid_t) uid, (gid_t) gid);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error_with_allocated_filename(opath);
    Py_DECREF(opath);
    Py_INCREF(Py_None);
    return Py_None;
2324
}
2325
#endif /* HAVE_CHOWN */
2326

2327 2328 2329 2330 2331 2332 2333 2334 2335
#ifdef HAVE_FCHOWN
PyDoc_STRVAR(posix_fchown__doc__,
"fchown(fd, uid, gid)\n\n\
Change the owner and group id of the file given by file descriptor\n\
fd to the numeric uid and gid.");

static PyObject *
posix_fchown(PyObject *self, PyObject *args)
{
2336 2337 2338
    int fd;
    long uid, gid;
    int res;
2339
    if (!PyArg_ParseTuple(args, "ill:fchown", &fd, &uid, &gid))
2340 2341 2342 2343 2344 2345 2346
        return NULL;
    Py_BEGIN_ALLOW_THREADS
    res = fchown(fd, (uid_t) uid, (gid_t) gid);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
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}
#endif /* HAVE_FCHOWN */

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#ifdef HAVE_LCHOWN
PyDoc_STRVAR(posix_lchown__doc__,
"lchown(path, uid, gid)\n\n\
Change the owner and group id of path to the numeric uid and gid.\n\
This function will not follow symbolic links.");

static PyObject *
posix_lchown(PyObject *self, PyObject *args)
{
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    PyObject *opath;
    char *path;
    long uid, gid;
    int res;
    if (!PyArg_ParseTuple(args, "O&ll:lchown",
                          PyUnicode_FSConverter, &opath,
                          &uid, &gid))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = lchown(path, (uid_t) uid, (gid_t) gid);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error_with_allocated_filename(opath);
    Py_DECREF(opath);
    Py_INCREF(Py_None);
    return Py_None;
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}
#endif /* HAVE_LCHOWN */

2379

2380
#ifdef HAVE_GETCWD
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static PyObject *
2382
posix_getcwd(int use_bytes)
2383
{
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    char buf[1026];
    char *res;
2386

2387
#ifdef MS_WINDOWS
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    if (!use_bytes) {
        wchar_t wbuf[1026];
        wchar_t *wbuf2 = wbuf;
        PyObject *resobj;
        DWORD len;
        Py_BEGIN_ALLOW_THREADS
        len = GetCurrentDirectoryW(sizeof wbuf/ sizeof wbuf[0], wbuf);
        /* If the buffer is large enough, len does not include the
           terminating \0. If the buffer is too small, len includes
           the space needed for the terminator. */
        if (len >= sizeof wbuf/ sizeof wbuf[0]) {
            wbuf2 = malloc(len * sizeof(wchar_t));
            if (wbuf2)
                len = GetCurrentDirectoryW(len, wbuf2);
        }
        Py_END_ALLOW_THREADS
        if (!wbuf2) {
            PyErr_NoMemory();
            return NULL;
        }
        if (!len) {
            if (wbuf2 != wbuf) free(wbuf2);
            return win32_error("getcwdu", NULL);
        }
        resobj = PyUnicode_FromWideChar(wbuf2, len);
        if (wbuf2 != wbuf) free(wbuf2);
        return resobj;
    }
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    if (win32_warn_bytes_api())
        return NULL;
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#endif

    Py_BEGIN_ALLOW_THREADS
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#if defined(PYOS_OS2) && defined(PYCC_GCC)
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    res = _getcwd2(buf, sizeof buf);
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#else
2425
    res = getcwd(buf, sizeof buf);
2426
#endif
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    Py_END_ALLOW_THREADS
    if (res == NULL)
        return posix_error();
    if (use_bytes)
        return PyBytes_FromStringAndSize(buf, strlen(buf));
2432
    return PyUnicode_DecodeFSDefault(buf);
2433
}
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PyDoc_STRVAR(posix_getcwd__doc__,
"getcwd() -> path\n\n\
Return a unicode string representing the current working directory.");

static PyObject *
posix_getcwd_unicode(PyObject *self)
{
    return posix_getcwd(0);
}

PyDoc_STRVAR(posix_getcwdb__doc__,
"getcwdb() -> path\n\n\
Return a bytes string representing the current working directory.");

static PyObject *
posix_getcwd_bytes(PyObject *self)
{
    return posix_getcwd(1);
}
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#endif
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2457
#ifdef HAVE_LINK
2458
PyDoc_STRVAR(posix_link__doc__,
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"link(src, dst)\n\n\
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Create a hard link to a file.");
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static PyObject *
2463
posix_link(PyObject *self, PyObject *args)
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{
2465
    return posix_2str(args, "O&O&:link", link);
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}
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#endif /* HAVE_LINK */
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#ifdef MS_WINDOWS
PyDoc_STRVAR(win32_link__doc__,
"link(src, dst)\n\n\
Create a hard link to a file.");

static PyObject *
win32_link(PyObject *self, PyObject *args)
{
2477 2478
    PyObject *src, *dst;
    BOOL ok;
2479

2480
    if (PyArg_ParseTuple(args, "UU:link", &src, &dst))
2481 2482
    {
        wchar_t *wsrc, *wdst;
2483 2484

        wsrc = PyUnicode_AsUnicode(src);
2485
        if (wsrc == NULL)
2486 2487
            goto error;
        wdst = PyUnicode_AsUnicode(dst);
2488
        if (wdst == NULL)
2489
            goto error;
2490

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2491
        Py_BEGIN_ALLOW_THREADS
2492
        ok = CreateHardLinkW(wdst, wsrc, NULL);
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2493 2494
        Py_END_ALLOW_THREADS

2495
        if (!ok)
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2496 2497 2498
            return win32_error("link", NULL);
        Py_RETURN_NONE;
    }
2499 2500 2501 2502 2503 2504
    else {
        PyErr_Clear();
        if (!PyArg_ParseTuple(args, "O&O&:link",
                              PyUnicode_FSConverter, &src,
                              PyUnicode_FSConverter, &dst))
            return NULL;
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Brian Curtin committed
2505

2506 2507
        if (win32_warn_bytes_api())
            goto error;
2508

2509 2510 2511 2512 2513
        Py_BEGIN_ALLOW_THREADS
        ok = CreateHardLinkA(PyBytes_AS_STRING(dst),
                             PyBytes_AS_STRING(src),
                             NULL);
        Py_END_ALLOW_THREADS
2514

2515 2516
        Py_XDECREF(src);
        Py_XDECREF(dst);
2517

2518 2519 2520
        if (!ok)
            return win32_error("link", NULL);
        Py_RETURN_NONE;
2521

2522 2523 2524 2525 2526
    error:
        Py_XDECREF(src);
        Py_XDECREF(dst);
        return NULL;
    }
2527 2528 2529
}
#endif /* MS_WINDOWS */

2530

2531
PyDoc_STRVAR(posix_listdir__doc__,
2532
"listdir([path]) -> list_of_strings\n\n\
2533 2534
Return a list containing the names of the entries in the directory.\n\
\n\
2535
    path: path of directory to list (default: '.')\n\
2536 2537
\n\
The list is in arbitrary order.  It does not include the special\n\
2538
entries '.' and '..' even if they are present in the directory.");
2539

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Barry Warsaw committed
2540
static PyObject *
2541
posix_listdir(PyObject *self, PyObject *args)
2542
{
2543 2544
    /* XXX Should redo this putting the (now four) versions of opendir
       in separate files instead of having them all here... */
2545
#if defined(MS_WINDOWS) && !defined(HAVE_OPENDIR)
2546

2547 2548 2549 2550
    PyObject *d, *v;
    HANDLE hFindFile;
    BOOL result;
    WIN32_FIND_DATA FileData;
2551 2552
    const char *path;
    Py_ssize_t pathlen;
2553 2554 2555 2556
    char namebuf[MAX_PATH+5]; /* Overallocate for \\*.*\0 */
    char *bufptr = namebuf;
    Py_ssize_t len = sizeof(namebuf)-5; /* only claim to have space for MAX_PATH */

2557 2558
    PyObject *po = NULL;
    if (PyArg_ParseTuple(args, "|U:listdir", &po)) {
2559
        WIN32_FIND_DATAW wFileData;
2560
        wchar_t *wnamebuf, *po_wchars;
2561

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Antoine Pitrou committed
2562
        if (po == NULL) { /* Default arg: "." */
2563 2564 2565
            po_wchars = L".";
            len = 1;
        } else {
2566
            po_wchars = PyUnicode_AsUnicodeAndSize(po, &len);
2567 2568
            if (po_wchars == NULL)
                return NULL;
2569
        }
2570 2571 2572 2573 2574 2575
        /* Overallocate for \\*.*\0 */
        wnamebuf = malloc((len + 5) * sizeof(wchar_t));
        if (!wnamebuf) {
            PyErr_NoMemory();
            return NULL;
        }
2576
        wcscpy(wnamebuf, po_wchars);
2577
        if (len > 0) {
2578
            wchar_t wch = wnamebuf[len-1];
2579 2580 2581 2582 2583 2584 2585 2586
            if (wch != L'/' && wch != L'\\' && wch != L':')
                wnamebuf[len++] = L'\\';
            wcscpy(wnamebuf + len, L"*.*");
        }
        if ((d = PyList_New(0)) == NULL) {
            free(wnamebuf);
            return NULL;
        }
2587
        Py_BEGIN_ALLOW_THREADS
2588
        hFindFile = FindFirstFileW(wnamebuf, &wFileData);
2589
        Py_END_ALLOW_THREADS
2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604
        if (hFindFile == INVALID_HANDLE_VALUE) {
            int error = GetLastError();
            if (error == ERROR_FILE_NOT_FOUND) {
                free(wnamebuf);
                return d;
            }
            Py_DECREF(d);
            win32_error_unicode("FindFirstFileW", wnamebuf);
            free(wnamebuf);
            return NULL;
        }
        do {
            /* Skip over . and .. */
            if (wcscmp(wFileData.cFileName, L".") != 0 &&
                wcscmp(wFileData.cFileName, L"..") != 0) {
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2605
                v = PyUnicode_FromWideChar(wFileData.cFileName, wcslen(wFileData.cFileName));
2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645
                if (v == NULL) {
                    Py_DECREF(d);
                    d = NULL;
                    break;
                }
                if (PyList_Append(d, v) != 0) {
                    Py_DECREF(v);
                    Py_DECREF(d);
                    d = NULL;
                    break;
                }
                Py_DECREF(v);
            }
            Py_BEGIN_ALLOW_THREADS
            result = FindNextFileW(hFindFile, &wFileData);
            Py_END_ALLOW_THREADS
            /* FindNextFile sets error to ERROR_NO_MORE_FILES if
               it got to the end of the directory. */
            if (!result && GetLastError() != ERROR_NO_MORE_FILES) {
                Py_DECREF(d);
                win32_error_unicode("FindNextFileW", wnamebuf);
                FindClose(hFindFile);
                free(wnamebuf);
                return NULL;
            }
        } while (result == TRUE);

        if (FindClose(hFindFile) == FALSE) {
            Py_DECREF(d);
            win32_error_unicode("FindClose", wnamebuf);
            free(wnamebuf);
            return NULL;
        }
        free(wnamebuf);
        return d;
    }
    /* Drop the argument parsing error as narrow strings
       are also valid. */
    PyErr_Clear();

2646 2647 2648
    if (!PyArg_ParseTuple(args, "y#:listdir", &path, &pathlen))
        return NULL;
    if (win32_warn_bytes_api())
2649
        return NULL;
2650
    if (pathlen+1 > MAX_PATH) {
2651 2652 2653
        PyErr_SetString(PyExc_ValueError, "path too long");
        return NULL;
    }
2654 2655
    strcpy(namebuf, path);
    len = pathlen;
2656 2657 2658 2659 2660 2661 2662 2663 2664 2665
    if (len > 0) {
        char ch = namebuf[len-1];
        if (ch != SEP && ch != ALTSEP && ch != ':')
            namebuf[len++] = '/';
        strcpy(namebuf + len, "*.*");
    }

    if ((d = PyList_New(0)) == NULL)
        return NULL;

2666
    Py_BEGIN_ALLOW_THREADS
2667
    hFindFile = FindFirstFile(namebuf, &FileData);
2668
    Py_END_ALLOW_THREADS
2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712
    if (hFindFile == INVALID_HANDLE_VALUE) {
        int error = GetLastError();
        if (error == ERROR_FILE_NOT_FOUND)
            return d;
        Py_DECREF(d);
        return win32_error("FindFirstFile", namebuf);
    }
    do {
        /* Skip over . and .. */
        if (strcmp(FileData.cFileName, ".") != 0 &&
            strcmp(FileData.cFileName, "..") != 0) {
            v = PyBytes_FromString(FileData.cFileName);
            if (v == NULL) {
                Py_DECREF(d);
                d = NULL;
                break;
            }
            if (PyList_Append(d, v) != 0) {
                Py_DECREF(v);
                Py_DECREF(d);
                d = NULL;
                break;
            }
            Py_DECREF(v);
        }
        Py_BEGIN_ALLOW_THREADS
        result = FindNextFile(hFindFile, &FileData);
        Py_END_ALLOW_THREADS
        /* FindNextFile sets error to ERROR_NO_MORE_FILES if
           it got to the end of the directory. */
        if (!result && GetLastError() != ERROR_NO_MORE_FILES) {
            Py_DECREF(d);
            win32_error("FindNextFile", namebuf);
            FindClose(hFindFile);
            return NULL;
        }
    } while (result == TRUE);

    if (FindClose(hFindFile) == FALSE) {
        Py_DECREF(d);
        return win32_error("FindClose", namebuf);
    }

    return d;
2713

2714
#elif defined(PYOS_OS2)
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2715 2716 2717 2718

#ifndef MAX_PATH
#define MAX_PATH    CCHMAXPATH
#endif
2719
    PyObject *oname;
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2720
    char *name, *pt;
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2721
    Py_ssize_t len;
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2722 2723 2724 2725 2726 2727 2728
    PyObject *d, *v;
    char namebuf[MAX_PATH+5];
    HDIR  hdir = 1;
    ULONG srchcnt = 1;
    FILEFINDBUF3   ep;
    APIRET rc;

2729
    if (!PyArg_ParseTuple(args, "O&:listdir",
2730
                          PyUnicode_FSConverter, &oname))
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Guido van Rossum committed
2731
        return NULL;
2732 2733
    name = PyBytes_AsString(oname);
    len = PyBytes_GET_SIZE(oname);
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Guido van Rossum committed
2734
    if (len >= MAX_PATH) {
2735
        Py_DECREF(oname);
2736
        PyErr_SetString(PyExc_ValueError, "path too long");
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2737 2738 2739 2740
        return NULL;
    }
    strcpy(namebuf, name);
    for (pt = namebuf; *pt; pt++)
2741 2742 2743 2744
        if (*pt == ALTSEP)
            *pt = SEP;
    if (namebuf[len-1] != SEP)
        namebuf[len++] = SEP;
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2745 2746
    strcpy(namebuf + len, "*.*");

2747
    if ((d = PyList_New(0)) == NULL) {
2748
        Py_DECREF(oname);
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Guido van Rossum committed
2749
        return NULL;
2750
    }
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Guido van Rossum committed
2751

2752 2753
    rc = DosFindFirst(namebuf,         /* Wildcard Pattern to Match */
                      &hdir,           /* Handle to Use While Search Directory */
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Guido van Rossum committed
2754
                      FILE_READONLY | FILE_HIDDEN | FILE_SYSTEM | FILE_DIRECTORY,
2755 2756 2757
                      &ep, sizeof(ep), /* Structure to Receive Directory Entry */
                      &srchcnt,        /* Max and Actual Count of Entries Per Iteration */
                      FIL_STANDARD);   /* Format of Entry (EAs or Not) */
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2758 2759 2760

    if (rc != NO_ERROR) {
        errno = ENOENT;
2761
        return posix_error_with_allocated_filename(oname);
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Guido van Rossum committed
2762 2763
    }

2764
    if (srchcnt > 0) { /* If Directory is NOT Totally Empty, */
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Guido van Rossum committed
2765 2766
        do {
            if (ep.achName[0] == '.'
2767
            && (ep.achName[1] == '\0' || (ep.achName[1] == '.' && ep.achName[2] == '\0')))
2768
                continue; /* Skip Over "." and ".." Names */
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2769 2770 2771

            strcpy(namebuf, ep.achName);

2772 2773
            /* Leave Case of Name Alone -- In Native Form */
            /* (Removed Forced Lowercasing Code) */
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Guido van Rossum committed
2774

2775
            v = PyBytes_FromString(namebuf);
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Guido van Rossum committed
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            if (v == NULL) {
                Py_DECREF(d);
                d = NULL;
                break;
            }
            if (PyList_Append(d, v) != 0) {
                Py_DECREF(v);
                Py_DECREF(d);
                d = NULL;
                break;
            }
            Py_DECREF(v);
        } while (DosFindNext(hdir, &ep, sizeof(ep), &srchcnt) == NO_ERROR && srchcnt > 0);
    }

2791
    Py_DECREF(oname);
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Guido van Rossum committed
2792
    return d;
2793
#else
2794 2795 2796 2797 2798 2799 2800 2801
    PyObject *oname;
    char *name;
    PyObject *d, *v;
    DIR *dirp;
    struct dirent *ep;
    int arg_is_unicode = 1;

    errno = 0;
2802 2803
    /* v is never read, so it does not need to be initialized yet. */
    if (!PyArg_ParseTuple(args, "|U:listdir", &v)) {
2804 2805 2806
        arg_is_unicode = 0;
        PyErr_Clear();
    }
2807 2808
    oname = NULL;
    if (!PyArg_ParseTuple(args, "|O&:listdir", PyUnicode_FSConverter, &oname))
2809
        return NULL;
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Antoine Pitrou committed
2810
    if (oname == NULL) { /* Default arg: "." */
Stefan Krah's avatar
Stefan Krah committed
2811
        oname = PyBytes_FromString(".");
2812
    }
2813
    name = PyBytes_AsString(oname);
2814 2815 2816 2817
    Py_BEGIN_ALLOW_THREADS
    dirp = opendir(name);
    Py_END_ALLOW_THREADS
    if (dirp == NULL) {
2818 2819 2820
        return posix_error_with_allocated_filename(oname);
    }
    if ((d = PyList_New(0)) == NULL) {
2821
        Py_BEGIN_ALLOW_THREADS
2822
        closedir(dirp);
2823
        Py_END_ALLOW_THREADS
2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835
        Py_DECREF(oname);
        return NULL;
    }
    for (;;) {
        errno = 0;
        Py_BEGIN_ALLOW_THREADS
        ep = readdir(dirp);
        Py_END_ALLOW_THREADS
        if (ep == NULL) {
            if (errno == 0) {
                break;
            } else {
2836
                Py_BEGIN_ALLOW_THREADS
2837
                closedir(dirp);
2838
                Py_END_ALLOW_THREADS
2839 2840 2841 2842 2843 2844 2845 2846
                Py_DECREF(d);
                return posix_error_with_allocated_filename(oname);
            }
        }
        if (ep->d_name[0] == '.' &&
            (NAMLEN(ep) == 1 ||
             (ep->d_name[1] == '.' && NAMLEN(ep) == 2)))
            continue;
2847 2848 2849 2850
        if (arg_is_unicode)
            v = PyUnicode_DecodeFSDefaultAndSize(ep->d_name, NAMLEN(ep));
        else
            v = PyBytes_FromStringAndSize(ep->d_name, NAMLEN(ep));
2851
        if (v == NULL) {
2852
            Py_CLEAR(d);
2853 2854 2855 2856
            break;
        }
        if (PyList_Append(d, v) != 0) {
            Py_DECREF(v);
2857
            Py_CLEAR(d);
2858 2859 2860 2861
            break;
        }
        Py_DECREF(v);
    }
2862
    Py_BEGIN_ALLOW_THREADS
2863
    closedir(dirp);
2864
    Py_END_ALLOW_THREADS
2865 2866 2867
    Py_DECREF(oname);

    return d;
2868

2869 2870
#endif /* which OS */
}  /* end of posix_listdir */
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2871

2872
#ifdef HAVE_FDOPENDIR
2873 2874
PyDoc_STRVAR(posix_flistdir__doc__,
"flistdir(fd) -> list_of_strings\n\n\
2875
Like listdir(), but uses a file descriptor instead.");
2876 2877

static PyObject *
2878
posix_flistdir(PyObject *self, PyObject *args)
2879 2880 2881 2882 2883 2884 2885
{
    PyObject *d, *v;
    DIR *dirp;
    struct dirent *ep;
    int fd;

    errno = 0;
2886
    if (!PyArg_ParseTuple(args, "i:flistdir", &fd))
2887
        return NULL;
2888 2889 2890 2891
    /* closedir() closes the FD, so we duplicate it */
    fd = dup(fd);
    if (fd < 0)
        return posix_error();
2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914
    Py_BEGIN_ALLOW_THREADS
    dirp = fdopendir(fd);
    Py_END_ALLOW_THREADS
    if (dirp == NULL) {
        close(fd);
        return posix_error();
    }
    if ((d = PyList_New(0)) == NULL) {
        Py_BEGIN_ALLOW_THREADS
        closedir(dirp);
        Py_END_ALLOW_THREADS
        return NULL;
    }
    for (;;) {
        errno = 0;
        Py_BEGIN_ALLOW_THREADS
        ep = readdir(dirp);
        Py_END_ALLOW_THREADS
        if (ep == NULL) {
            if (errno == 0) {
                break;
            } else {
                Py_BEGIN_ALLOW_THREADS
2915
                rewinddir(dirp);
2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938
                closedir(dirp);
                Py_END_ALLOW_THREADS
                Py_DECREF(d);
                return posix_error();
            }
        }
        if (ep->d_name[0] == '.' &&
            (NAMLEN(ep) == 1 ||
             (ep->d_name[1] == '.' && NAMLEN(ep) == 2)))
            continue;
        v = PyUnicode_DecodeFSDefaultAndSize(ep->d_name, NAMLEN(ep));
        if (v == NULL) {
            Py_CLEAR(d);
            break;
        }
        if (PyList_Append(d, v) != 0) {
            Py_DECREF(v);
            Py_CLEAR(d);
            break;
        }
        Py_DECREF(v);
    }
    Py_BEGIN_ALLOW_THREADS
2939
    rewinddir(dirp);
2940 2941 2942 2943 2944 2945 2946
    closedir(dirp);
    Py_END_ALLOW_THREADS

    return d;
}
#endif

2947
#ifdef MS_WINDOWS
2948 2949 2950 2951
/* A helper function for abspath on win32 */
static PyObject *
posix__getfullpathname(PyObject *self, PyObject *args)
{
2952
    const char *path;
2953 2954
    char outbuf[MAX_PATH*2];
    char *temp;
2955 2956 2957 2958 2959 2960 2961
    PyObject *po;

    if (PyArg_ParseTuple(args, "U|:_getfullpathname", &po))
    {
        wchar_t *wpath;
        wchar_t woutbuf[MAX_PATH*2], *woutbufp = woutbuf;
        wchar_t *wtemp;
2962 2963
        DWORD result;
        PyObject *v;
2964 2965 2966 2967

        wpath = PyUnicode_AsUnicode(po);
        if (wpath == NULL)
            return NULL;
2968
        result = GetFullPathNameW(wpath,
2969
                                  Py_ARRAY_LENGTH(woutbuf),
2970
                                  woutbuf, &wtemp);
2971
        if (result > Py_ARRAY_LENGTH(woutbuf)) {
2972
            woutbufp = malloc(result * sizeof(wchar_t));
2973 2974 2975 2976 2977
            if (!woutbufp)
                return PyErr_NoMemory();
            result = GetFullPathNameW(wpath, result, woutbufp, &wtemp);
        }
        if (result)
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Victor Stinner committed
2978
            v = PyUnicode_FromWideChar(woutbufp, wcslen(woutbufp));
2979
        else
2980
            v = win32_error_object("GetFullPathNameW", po);
2981 2982 2983 2984 2985 2986 2987
        if (woutbufp != woutbuf)
            free(woutbufp);
        return v;
    }
    /* Drop the argument parsing error as narrow strings
       are also valid. */
    PyErr_Clear();
2988

2989 2990 2991 2992
    if (!PyArg_ParseTuple (args, "y:_getfullpathname",
                           &path))
        return NULL;
    if (win32_warn_bytes_api())
2993
        return NULL;
2994
    if (!GetFullPathName(path, Py_ARRAY_LENGTH(outbuf),
2995 2996 2997 2998 2999 3000 3001 3002 3003
                         outbuf, &temp)) {
        win32_error("GetFullPathName", path);
        return NULL;
    }
    if (PyUnicode_Check(PyTuple_GetItem(args, 0))) {
        return PyUnicode_Decode(outbuf, strlen(outbuf),
                                Py_FileSystemDefaultEncoding, NULL);
    }
    return PyBytes_FromString(outbuf);
3004
} /* end of posix__getfullpathname */
3005

3006

3007

3008 3009 3010 3011 3012 3013 3014 3015
/* A helper function for samepath on windows */
static PyObject *
posix__getfinalpathname(PyObject *self, PyObject *args)
{
    HANDLE hFile;
    int buf_size;
    wchar_t *target_path;
    int result_length;
3016
    PyObject *po, *result;
3017
    wchar_t *path;
3018

3019 3020 3021 3022
    if (!PyArg_ParseTuple(args, "U|:_getfinalpathname", &po))
        return NULL;
    path = PyUnicode_AsUnicode(po);
    if (path == NULL)
3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040
        return NULL;

    if(!check_GetFinalPathNameByHandle()) {
        /* If the OS doesn't have GetFinalPathNameByHandle, return a
           NotImplementedError. */
        return PyErr_Format(PyExc_NotImplementedError,
            "GetFinalPathNameByHandle not available on this platform");
    }

    hFile = CreateFileW(
        path,
        0, /* desired access */
        0, /* share mode */
        NULL, /* security attributes */
        OPEN_EXISTING,
        /* FILE_FLAG_BACKUP_SEMANTICS is required to open a directory */
        FILE_FLAG_BACKUP_SEMANTICS,
        NULL);
3041

3042 3043
    if(hFile == INVALID_HANDLE_VALUE)
        return win32_error_object("CreateFileW", po);
3044 3045 3046 3047 3048 3049

    /* We have a good handle to the target, use it to determine the
       target path name. */
    buf_size = Py_GetFinalPathNameByHandleW(hFile, 0, 0, VOLUME_NAME_NT);

    if(!buf_size)
3050
        return win32_error_object("GetFinalPathNameByHandle", po);
3051 3052 3053 3054 3055 3056 3057 3058

    target_path = (wchar_t *)malloc((buf_size+1)*sizeof(wchar_t));
    if(!target_path)
        return PyErr_NoMemory();

    result_length = Py_GetFinalPathNameByHandleW(hFile, target_path,
                                                 buf_size, VOLUME_NAME_DOS);
    if(!result_length)
3059
        return win32_error_object("GetFinalPathNamyByHandle", po);
3060 3061

    if(!CloseHandle(hFile))
3062
        return win32_error_object("CloseHandle", po);
3063 3064

    target_path[result_length] = 0;
Victor Stinner's avatar
Victor Stinner committed
3065
    result = PyUnicode_FromWideChar(target_path, result_length);
3066 3067 3068 3069
    free(target_path);
    return result;

} /* end of posix__getfinalpathname */
3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080

static PyObject *
posix__getfileinformation(PyObject *self, PyObject *args)
{
    HANDLE hFile;
    BY_HANDLE_FILE_INFORMATION info;
    int fd;

    if (!PyArg_ParseTuple(args, "i:_getfileinformation", &fd))
        return NULL;

3081 3082
    if (!_PyVerify_fd(fd))
        return posix_error();
3083 3084 3085

    hFile = (HANDLE)_get_osfhandle(fd);
    if (hFile == INVALID_HANDLE_VALUE)
3086
        return posix_error();
3087 3088 3089 3090 3091 3092 3093 3094

    if (!GetFileInformationByHandle(hFile, &info))
        return win32_error("_getfileinformation", NULL);

    return Py_BuildValue("iii", info.dwVolumeSerialNumber,
                                info.nFileIndexHigh,
                                info.nFileIndexLow);
}
3095

3096 3097 3098
PyDoc_STRVAR(posix__isdir__doc__,
"Return true if the pathname refers to an existing directory.");

3099 3100 3101
static PyObject *
posix__isdir(PyObject *self, PyObject *args)
{
3102
    const char *path;
3103
    PyObject *po;
3104 3105 3106
    DWORD attributes;

    if (PyArg_ParseTuple(args, "U|:_isdir", &po)) {
3107 3108 3109
        wchar_t *wpath = PyUnicode_AsUnicode(po);
        if (wpath == NULL)
            return NULL;
3110 3111 3112 3113 3114 3115 3116 3117 3118 3119

        attributes = GetFileAttributesW(wpath);
        if (attributes == INVALID_FILE_ATTRIBUTES)
            Py_RETURN_FALSE;
        goto check;
    }
    /* Drop the argument parsing error as narrow strings
       are also valid. */
    PyErr_Clear();

3120 3121 3122
    if (!PyArg_ParseTuple(args, "y:_isdir", &path))
        return NULL;
    if (win32_warn_bytes_api())
3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133
        return NULL;
    attributes = GetFileAttributesA(path);
    if (attributes == INVALID_FILE_ATTRIBUTES)
        Py_RETURN_FALSE;

check:
    if (attributes & FILE_ATTRIBUTE_DIRECTORY)
        Py_RETURN_TRUE;
    else
        Py_RETURN_FALSE;
}
3134
#endif /* MS_WINDOWS */
3135

3136
PyDoc_STRVAR(posix_mkdir__doc__,
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Fred Drake committed
3137
"mkdir(path [, mode=0777])\n\n\
3138
Create a directory.");
3139

Barry Warsaw's avatar
Barry Warsaw committed
3140
static PyObject *
3141
posix_mkdir(PyObject *self, PyObject *args)
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Guido van Rossum committed
3142
{
3143
    int res;
3144
    const char *path;
3145
    int mode = 0777;
3146

3147
#ifdef MS_WINDOWS
3148 3149 3150 3151 3152 3153 3154
    PyObject *po;
    if (PyArg_ParseTuple(args, "U|i:mkdir", &po, &mode))
    {
        wchar_t *wpath = PyUnicode_AsUnicode(po);
        if (wpath == NULL)
            return NULL;

3155
        Py_BEGIN_ALLOW_THREADS
3156
        res = CreateDirectoryW(wpath, NULL);
3157 3158
        Py_END_ALLOW_THREADS
        if (!res)
3159
            return win32_error_object("mkdir", po);
3160 3161 3162 3163 3164 3165
        Py_INCREF(Py_None);
        return Py_None;
    }
    /* Drop the argument parsing error as narrow strings
       are also valid. */
    PyErr_Clear();
3166 3167 3168
    if (!PyArg_ParseTuple(args, "y|i:mkdir", &path, &mode))
        return NULL;
    if (win32_warn_bytes_api())
3169 3170 3171 3172 3173 3174 3175 3176 3177 3178
        return NULL;
    Py_BEGIN_ALLOW_THREADS
    res = CreateDirectoryA(path, NULL);
    Py_END_ALLOW_THREADS
    if (!res) {
        win32_error("mkdir", path);
        return NULL;
    }
    Py_INCREF(Py_None);
    return Py_None;
3179
#else
3180
    PyObject *opath;
3181

3182 3183 3184 3185 3186
    if (!PyArg_ParseTuple(args, "O&|i:mkdir",
                          PyUnicode_FSConverter, &opath, &mode))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
3187
#if ( defined(__WATCOMC__) || defined(PYCC_VACPP) ) && !defined(__QNX__)
3188
    res = mkdir(path);
3189
#else
3190
    res = mkdir(path, mode);
3191
#endif
3192 3193 3194 3195 3196 3197
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error_with_allocated_filename(opath);
    Py_DECREF(opath);
    Py_INCREF(Py_None);
    return Py_None;
3198
#endif
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Guido van Rossum committed
3199 3200
}

3201

3202 3203
/* sys/resource.h is needed for at least: wait3(), wait4(), broken nice. */
#if defined(HAVE_SYS_RESOURCE_H)
3204 3205 3206
#include <sys/resource.h>
#endif

3207 3208

#ifdef HAVE_NICE
3209
PyDoc_STRVAR(posix_nice__doc__,
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Fred Drake committed
3210 3211
"nice(inc) -> new_priority\n\n\
Decrease the priority of process by inc and return the new priority.");
3212

Barry Warsaw's avatar
Barry Warsaw committed
3213
static PyObject *
3214
posix_nice(PyObject *self, PyObject *args)
3215
{
3216
    int increment, value;
3217

3218 3219
    if (!PyArg_ParseTuple(args, "i:nice", &increment))
        return NULL;
3220

3221 3222 3223 3224
    /* There are two flavours of 'nice': one that returns the new
       priority (as required by almost all standards out there) and the
       Linux/FreeBSD/BSDI one, which returns '0' on success and advices
       the use of getpriority() to get the new priority.
3225

3226 3227 3228 3229
       If we are of the nice family that returns the new priority, we
       need to clear errno before the call, and check if errno is filled
       before calling posix_error() on a returnvalue of -1, because the
       -1 may be the actual new priority! */
3230

3231 3232
    errno = 0;
    value = nice(increment);
3233
#if defined(HAVE_BROKEN_NICE) && defined(HAVE_GETPRIORITY)
3234 3235
    if (value == 0)
        value = getpriority(PRIO_PROCESS, 0);
3236
#endif
3237 3238 3239 3240
    if (value == -1 && errno != 0)
        /* either nice() or getpriority() returned an error */
        return posix_error();
    return PyLong_FromLong((long) value);
3241
}
3242
#endif /* HAVE_NICE */
3243

3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285

#ifdef HAVE_GETPRIORITY
PyDoc_STRVAR(posix_getpriority__doc__,
"getpriority(which, who) -> current_priority\n\n\
Get program scheduling priority.");

static PyObject *
posix_getpriority(PyObject *self, PyObject *args)
{
    int which, who, retval;

    if (!PyArg_ParseTuple(args, "ii", &which, &who))
        return NULL;
    errno = 0;
    retval = getpriority(which, who);
    if (errno != 0)
        return posix_error();
    return PyLong_FromLong((long)retval);
}
#endif /* HAVE_GETPRIORITY */


#ifdef HAVE_SETPRIORITY
PyDoc_STRVAR(posix_setpriority__doc__,
"setpriority(which, who, prio) -> None\n\n\
Set program scheduling priority.");

static PyObject *
posix_setpriority(PyObject *self, PyObject *args)
{
    int which, who, prio, retval;

    if (!PyArg_ParseTuple(args, "iii", &which, &who, &prio))
        return NULL;
    retval = setpriority(which, who, prio);
    if (retval == -1)
        return posix_error();
    Py_RETURN_NONE;
}
#endif /* HAVE_SETPRIORITY */


Barry Warsaw's avatar
Barry Warsaw committed
3286
static PyObject *
3287
internal_rename(PyObject *self, PyObject *args, int is_replace)
Guido van Rossum's avatar
Guido van Rossum committed
3288
{
3289
#ifdef MS_WINDOWS
3290
    PyObject *src, *dst;
3291
    BOOL result;
3292 3293 3294 3295
    int flags = is_replace ? MOVEFILE_REPLACE_EXISTING : 0;
    if (PyArg_ParseTuple(args,
                         is_replace ? "UU:replace" : "UU:rename",
                         &src, &dst))
3296 3297 3298 3299 3300 3301 3302 3303 3304 3305
    {
        wchar_t *wsrc, *wdst;

        wsrc = PyUnicode_AsUnicode(src);
        if (wsrc == NULL)
            return NULL;
        wdst = PyUnicode_AsUnicode(dst);
        if (wdst == NULL)
            return NULL;
        Py_BEGIN_ALLOW_THREADS
3306
        result = MoveFileExW(wsrc, wdst, flags);
3307 3308
        Py_END_ALLOW_THREADS
        if (!result)
3309
            return win32_error(is_replace ? "replace" : "rename", NULL);
3310 3311
        Py_INCREF(Py_None);
        return Py_None;
3312
    }
3313 3314
    else {
        PyErr_Clear();
3315 3316
        if (!PyArg_ParseTuple(args,
                              is_replace ? "O&O&:replace" : "O&O&:rename",
3317 3318 3319 3320 3321 3322 3323 3324
                              PyUnicode_FSConverter, &src,
                              PyUnicode_FSConverter, &dst))
            return NULL;

        if (win32_warn_bytes_api())
            goto error;

        Py_BEGIN_ALLOW_THREADS
3325 3326
        result = MoveFileExA(PyBytes_AS_STRING(src),
                             PyBytes_AS_STRING(dst), flags);
3327 3328 3329 3330 3331 3332
        Py_END_ALLOW_THREADS

        Py_XDECREF(src);
        Py_XDECREF(dst);

        if (!result)
3333
            return win32_error(is_replace ? "replace" : "rename", NULL);
3334 3335 3336
        Py_INCREF(Py_None);
        return Py_None;

3337
error:
3338 3339
        Py_XDECREF(src);
        Py_XDECREF(dst);
3340
        return NULL;
3341
    }
3342
#else
3343 3344
    return posix_2str(args,
                      is_replace ? "O&O&:replace" : "O&O&:rename", rename);
3345
#endif
Guido van Rossum's avatar
Guido van Rossum committed
3346 3347
}

3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366
PyDoc_STRVAR(posix_rename__doc__,
"rename(old, new)\n\n\
Rename a file or directory.");

static PyObject *
posix_rename(PyObject *self, PyObject *args)
{
    return internal_rename(self, args, 0);
}

PyDoc_STRVAR(posix_replace__doc__,
"replace(old, new)\n\n\
Rename a file or directory, overwriting the destination.");

static PyObject *
posix_replace(PyObject *self, PyObject *args)
{
    return internal_rename(self, args, 1);
}
3367

3368
PyDoc_STRVAR(posix_rmdir__doc__,
Fred Drake's avatar
Fred Drake committed
3369
"rmdir(path)\n\n\
3370
Remove a directory.");
3371

Barry Warsaw's avatar
Barry Warsaw committed
3372
static PyObject *
3373
posix_rmdir(PyObject *self, PyObject *args)
Guido van Rossum's avatar
Guido van Rossum committed
3374
{
3375
#ifdef MS_WINDOWS
3376
    return win32_1str(args, "rmdir", "y:rmdir", RemoveDirectoryA, "U:rmdir", RemoveDirectoryW);
3377
#else
3378
    return posix_1str(args, "O&:rmdir", rmdir);
3379
#endif
Guido van Rossum's avatar
Guido van Rossum committed
3380 3381
}

3382

3383
PyDoc_STRVAR(posix_stat__doc__,
Fred Drake's avatar
Fred Drake committed
3384
"stat(path) -> stat result\n\n\
3385
Perform a stat system call on the given path.");
3386

Barry Warsaw's avatar
Barry Warsaw committed
3387
static PyObject *
3388
posix_stat(PyObject *self, PyObject *args)
Guido van Rossum's avatar
Guido van Rossum committed
3389
{
3390
#ifdef MS_WINDOWS
3391
    return posix_do_stat(self, args, "O&:stat", STAT, "U:stat", win32_stat_w);
3392
#else
3393
    return posix_do_stat(self, args, "O&:stat", STAT, NULL, NULL);
3394
#endif
Guido van Rossum's avatar
Guido van Rossum committed
3395 3396
}

3397

3398
#ifdef HAVE_SYSTEM
3399
PyDoc_STRVAR(posix_system__doc__,
Fred Drake's avatar
Fred Drake committed
3400
"system(command) -> exit_status\n\n\
3401
Execute the command (a string) in a subshell.");
3402

Barry Warsaw's avatar
Barry Warsaw committed
3403
static PyObject *
3404
posix_system(PyObject *self, PyObject *args)
Guido van Rossum's avatar
Guido van Rossum committed
3405
{
3406
    long sts;
3407
#ifdef MS_WINDOWS
3408 3409 3410
    wchar_t *command;
    if (!PyArg_ParseTuple(args, "u:system", &command))
        return NULL;
3411

3412 3413 3414
    Py_BEGIN_ALLOW_THREADS
    sts = _wsystem(command);
    Py_END_ALLOW_THREADS
3415
#else
3416 3417 3418 3419 3420
    PyObject *command_obj;
    char *command;
    if (!PyArg_ParseTuple(args, "O&:system",
                          PyUnicode_FSConverter, &command_obj))
        return NULL;
3421

3422 3423 3424 3425 3426
    command = PyBytes_AsString(command_obj);
    Py_BEGIN_ALLOW_THREADS
    sts = system(command);
    Py_END_ALLOW_THREADS
    Py_DECREF(command_obj);
3427
#endif
3428
    return PyLong_FromLong(sts);
Guido van Rossum's avatar
Guido van Rossum committed
3429
}
3430
#endif
Guido van Rossum's avatar
Guido van Rossum committed
3431

3432

3433
PyDoc_STRVAR(posix_umask__doc__,
Fred Drake's avatar
Fred Drake committed
3434
"umask(new_mask) -> old_mask\n\n\
3435
Set the current numeric umask and return the previous umask.");
3436

Barry Warsaw's avatar
Barry Warsaw committed
3437
static PyObject *
3438
posix_umask(PyObject *self, PyObject *args)
Guido van Rossum's avatar
Guido van Rossum committed
3439
{
3440 3441 3442 3443 3444 3445 3446
    int i;
    if (!PyArg_ParseTuple(args, "i:umask", &i))
        return NULL;
    i = (int)umask(i);
    if (i < 0)
        return posix_error();
    return PyLong_FromLong((long)i);
Guido van Rossum's avatar
Guido van Rossum committed
3447 3448
}

3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463
#ifdef MS_WINDOWS

/* override the default DeleteFileW behavior so that directory
symlinks can be removed with this function, the same as with
Unix symlinks */
BOOL WINAPI Py_DeleteFileW(LPCWSTR lpFileName)
{
    WIN32_FILE_ATTRIBUTE_DATA info;
    WIN32_FIND_DATAW find_data;
    HANDLE find_data_handle;
    int is_directory = 0;
    int is_link = 0;

    if (GetFileAttributesExW(lpFileName, GetFileExInfoStandard, &info)) {
        is_directory = info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
3464

3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483
        /* Get WIN32_FIND_DATA structure for the path to determine if
           it is a symlink */
        if(is_directory &&
           info.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
            find_data_handle = FindFirstFileW(lpFileName, &find_data);

            if(find_data_handle != INVALID_HANDLE_VALUE) {
                is_link = find_data.dwReserved0 == IO_REPARSE_TAG_SYMLINK;
                FindClose(find_data_handle);
            }
        }
    }

    if (is_directory && is_link)
        return RemoveDirectoryW(lpFileName);

    return DeleteFileW(lpFileName);
}
#endif /* MS_WINDOWS */
3484

3485
PyDoc_STRVAR(posix_unlink__doc__,
Fred Drake's avatar
Fred Drake committed
3486
"unlink(path)\n\n\
3487
Remove a file (same as remove(path)).");
3488

3489
PyDoc_STRVAR(posix_remove__doc__,
Fred Drake's avatar
Fred Drake committed
3490
"remove(path)\n\n\
3491
Remove a file (same as unlink(path)).");
3492

Barry Warsaw's avatar
Barry Warsaw committed
3493
static PyObject *
3494
posix_unlink(PyObject *self, PyObject *args)
Guido van Rossum's avatar
Guido van Rossum committed
3495
{
3496
#ifdef MS_WINDOWS
3497 3498
    return win32_1str(args, "remove", "y:remove", DeleteFileA,
                      "U:remove", Py_DeleteFileW);
3499
#else
3500
    return posix_1str(args, "O&:remove", unlink);
3501
#endif
Guido van Rossum's avatar
Guido van Rossum committed
3502 3503
}

3504

3505
#ifdef HAVE_UNAME
3506
PyDoc_STRVAR(posix_uname__doc__,
Fred Drake's avatar
Fred Drake committed
3507
"uname() -> (sysname, nodename, release, version, machine)\n\n\
3508
Return a tuple identifying the current operating system.");
3509

Barry Warsaw's avatar
Barry Warsaw committed
3510
static PyObject *
3511
posix_uname(PyObject *self, PyObject *noargs)
3512
{
3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526
    struct utsname u;
    int res;

    Py_BEGIN_ALLOW_THREADS
    res = uname(&u);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error();
    return Py_BuildValue("(sssss)",
                         u.sysname,
                         u.nodename,
                         u.release,
                         u.version,
                         u.machine);
3527
}
3528
#endif /* HAVE_UNAME */
3529

3530

3531
static int
3532
extract_time(PyObject *t, time_t* sec, long* nsec)
3533
{
3534
    time_t intval;
3535
    if (PyFloat_Check(t)) {
3536 3537 3538 3539 3540 3541 3542
        double d = PyFloat_AsDouble(t);
        double mod;
        *sec = (time_t)d;
        mod = fmod(d, 1.0);
        mod *= 1e9;
        *nsec = (long)mod;
        printf("%g => (%u, %li)\n", d, *sec, *nsec);
3543
        return 0;
3544
    }
3545 3546 3547
#if SIZEOF_TIME_T > SIZEOF_LONG
    intval = PyLong_AsUnsignedLongLongMask(t);
#else
3548
    intval = PyLong_AsLong(t);
3549
#endif
3550 3551 3552
    if (intval == -1 && PyErr_Occurred())
        return -1;
    *sec = intval;
3553
    *nsec = 0;
3554
    return 0;
3555
}
3556

3557
PyDoc_STRVAR(posix_utime__doc__,
3558 3559 3560 3561
"utime(path[, (atime, mtime)])\n\
Set the access and modified time of the file to the given values.\n\
If no second argument is used, set the access and modified times to\n\
the current time.");
3562

Barry Warsaw's avatar
Barry Warsaw committed
3563
static PyObject *
3564
posix_utime(PyObject *self, PyObject *args)
Guido van Rossum's avatar
Guido van Rossum committed
3565
{
3566
#ifdef MS_WINDOWS
3567
    PyObject *arg = Py_None;
3568
    PyObject *obwpath;
3569
    wchar_t *wpath = NULL;
3570
    const char *apath;
3571
    HANDLE hFile;
3572
    time_t atimesec, mtimesec;
3573
    long ansec, mnsec;
3574 3575 3576
    FILETIME atime, mtime;
    PyObject *result = NULL;

3577
    if (PyArg_ParseTuple(args, "U|O:utime", &obwpath, &arg)) {
3578 3579 3580
        wpath = PyUnicode_AsUnicode(obwpath);
        if (wpath == NULL)
            return NULL;
3581 3582 3583 3584 3585 3586
        Py_BEGIN_ALLOW_THREADS
        hFile = CreateFileW(wpath, FILE_WRITE_ATTRIBUTES, 0,
                            NULL, OPEN_EXISTING,
                            FILE_FLAG_BACKUP_SEMANTICS, NULL);
        Py_END_ALLOW_THREADS
        if (hFile == INVALID_HANDLE_VALUE)
3587 3588 3589
            return win32_error_object("utime", obwpath);
    }
    else {
3590 3591 3592 3593
        /* Drop the argument parsing error as narrow strings
           are also valid. */
        PyErr_Clear();

3594 3595 3596
        if (!PyArg_ParseTuple(args, "y|O:utime", &apath, &arg))
            return NULL;
        if (win32_warn_bytes_api())
3597
            return NULL;
3598

3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609
        Py_BEGIN_ALLOW_THREADS
        hFile = CreateFileA(apath, FILE_WRITE_ATTRIBUTES, 0,
                            NULL, OPEN_EXISTING,
                            FILE_FLAG_BACKUP_SEMANTICS, NULL);
        Py_END_ALLOW_THREADS
        if (hFile == INVALID_HANDLE_VALUE) {
            win32_error("utime", apath);
            return NULL;
        }
    }

3610
    if (arg == Py_None) {
3611 3612 3613 3614 3615 3616
        SYSTEMTIME now;
        GetSystemTime(&now);
        if (!SystemTimeToFileTime(&now, &mtime) ||
            !SystemTimeToFileTime(&now, &atime)) {
            win32_error("utime", NULL);
            goto done;
Stefan Krah's avatar
Stefan Krah committed
3617
        }
3618 3619 3620 3621 3622 3623 3624 3625
    }
    else if (!PyTuple_Check(arg) || PyTuple_Size(arg) != 2) {
        PyErr_SetString(PyExc_TypeError,
                        "utime() arg 2 must be a tuple (atime, mtime)");
        goto done;
    }
    else {
        if (extract_time(PyTuple_GET_ITEM(arg, 0),
3626
                         &atimesec, &ansec) == -1)
3627
            goto done;
3628
        time_t_to_FILE_TIME(atimesec, ansec, &atime);
3629
        if (extract_time(PyTuple_GET_ITEM(arg, 1),
3630
                         &mtimesec, &mnsec) == -1)
3631
            goto done;
3632
        time_t_to_FILE_TIME(mtimesec, mnsec, &mtime);
3633 3634 3635 3636 3637 3638 3639
    }
    if (!SetFileTime(hFile, NULL, &atime, &mtime)) {
        /* Avoid putting the file name into the error here,
           as that may confuse the user into believing that
           something is wrong with the file, when it also
           could be the time stamp that gives a problem. */
        win32_error("utime", NULL);
3640
        goto done;
3641 3642 3643
    }
    Py_INCREF(Py_None);
    result = Py_None;
3644
done:
3645 3646
    CloseHandle(hFile);
    return result;
3647
#else /* MS_WINDOWS */
3648

3649 3650
    PyObject *opath;
    char *path;
3651
    time_t atime, mtime;
3652
    long ansec, mnsec;
3653
    int res;
3654
    PyObject* arg = Py_None;
3655

3656
    if (!PyArg_ParseTuple(args, "O&|O:utime",
3657 3658 3659
                          PyUnicode_FSConverter, &opath, &arg))
        return NULL;
    path = PyBytes_AsString(opath);
3660
    if (arg == Py_None) {
3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673
        /* optional time values not given */
        Py_BEGIN_ALLOW_THREADS
        res = utime(path, NULL);
        Py_END_ALLOW_THREADS
    }
    else if (!PyTuple_Check(arg) || PyTuple_Size(arg) != 2) {
        PyErr_SetString(PyExc_TypeError,
                        "utime() arg 2 must be a tuple (atime, mtime)");
        Py_DECREF(opath);
        return NULL;
    }
    else {
        if (extract_time(PyTuple_GET_ITEM(arg, 0),
3674
                         &atime, &ansec) == -1) {
3675 3676 3677 3678
            Py_DECREF(opath);
            return NULL;
        }
        if (extract_time(PyTuple_GET_ITEM(arg, 1),
3679
                         &mtime, &mnsec) == -1) {
3680 3681 3682
            Py_DECREF(opath);
            return NULL;
        }
3683 3684 3685 3686 3687 3688

        Py_BEGIN_ALLOW_THREADS
        {
#ifdef HAVE_UTIMENSAT
        struct timespec buf[2];
        buf[0].tv_sec = atime;
3689
        buf[0].tv_nsec = ansec;
3690
        buf[1].tv_sec = mtime;
3691
        buf[1].tv_nsec = mnsec;
3692 3693 3694 3695
        res = utimensat(AT_FDCWD, path, buf, 0);
#elif defined(HAVE_UTIMES)
        struct timeval buf[2];
        buf[0].tv_sec = atime;
3696
        buf[0].tv_usec = ansec / 1000;
3697
        buf[1].tv_sec = mtime;
3698
        buf[1].tv_usec = mnsec / 1000;
3699
        res = utimes(path, buf);
3700 3701 3702 3703 3704 3705
#elif defined(HAVE_UTIME_H)
        /* XXX should define struct utimbuf instead, above */
        struct utimbuf buf;
        buf.actime = atime;
        buf.modtime = mtime;
        res = utime(path, &buf);
3706
#else
3707 3708 3709 3710 3711 3712
        time_t buf[2];
        buf[0] = atime;
        buf[1] = mtime;
        res = utime(path, buf);
#endif
        }
3713 3714 3715 3716 3717 3718 3719 3720
        Py_END_ALLOW_THREADS
    }
    if (res < 0) {
        return posix_error_with_allocated_filename(opath);
    }
    Py_DECREF(opath);
    Py_INCREF(Py_None);
    return Py_None;
3721
#undef UTIME_EXTRACT
3722
#endif /* MS_WINDOWS */
Guido van Rossum's avatar
Guido van Rossum committed
3723 3724
}

3725 3726
#ifdef HAVE_FUTIMES
PyDoc_STRVAR(posix_futimes__doc__,
3727
"futimes(fd[, (atime, mtime)])\n\
3728
Set the access and modified time of the file specified by the file\n\
3729
descriptor fd to the given values. If no second argument is used, set the\n\
3730 3731 3732 3733 3734 3735
access and modified times to the current time.");

static PyObject *
posix_futimes(PyObject *self, PyObject *args)
{
    int res, fd;
3736
    PyObject* arg = Py_None;
3737
    time_t atime, mtime;
3738
    long ansec, mnsec;
3739

3740
    if (!PyArg_ParseTuple(args, "i|O:futimes", &fd, &arg))
3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755
        return NULL;

    if (arg == Py_None) {
        /* optional time values not given */
        Py_BEGIN_ALLOW_THREADS
        res = futimes(fd, NULL);
        Py_END_ALLOW_THREADS
    }
    else if (!PyTuple_Check(arg) || PyTuple_Size(arg) != 2) {
        PyErr_SetString(PyExc_TypeError,
                "futimes() arg 2 must be a tuple (atime, mtime)");
        return NULL;
    }
    else {
        if (extract_time(PyTuple_GET_ITEM(arg, 0),
3756
                &atime, &ansec) == -1) {
3757 3758 3759
            return NULL;
        }
        if (extract_time(PyTuple_GET_ITEM(arg, 1),
3760
                &mtime, &mnsec) == -1) {
3761 3762
            return NULL;
        }
3763 3764 3765 3766 3767
        Py_BEGIN_ALLOW_THREADS
        {
#ifdef HAVE_FUTIMENS
        struct timespec buf[2];
        buf[0].tv_sec = atime;
3768
        buf[0].tv_nsec = ansec;
3769
        buf[1].tv_sec = mtime;
3770
        buf[1].tv_nsec = mnsec;
3771 3772 3773 3774
        res = futimens(fd, buf);
#else
        struct timeval buf[2];
        buf[0].tv_sec = atime;
3775
        buf[0].tv_usec = ansec / 1000;
3776
        buf[1].tv_sec = mtime;
3777
        buf[1].tv_usec = mnsec / 1000;
3778
        res = futimes(fd, buf);
3779 3780
#endif
        }
3781 3782 3783 3784 3785 3786 3787 3788 3789 3790
        Py_END_ALLOW_THREADS
    }
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif

#ifdef HAVE_LUTIMES
PyDoc_STRVAR(posix_lutimes__doc__,
3791
"lutimes(path[, (atime, mtime)])\n\
3792 3793 3794 3795 3796
Like utime(), but if path is a symbolic link, it is not dereferenced.");

static PyObject *
posix_lutimes(PyObject *self, PyObject *args)
{
3797 3798
    PyObject *opath;
    PyObject *arg = Py_None;
3799 3800
    const char *path;
    int res;
3801
    time_t atime, mtime;
3802
    long ansec, mnsec;
3803

3804
    if (!PyArg_ParseTuple(args, "O&|O:lutimes",
3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821
            PyUnicode_FSConverter, &opath, &arg))
        return NULL;
    path = PyBytes_AsString(opath);
    if (arg == Py_None) {
        /* optional time values not given */
        Py_BEGIN_ALLOW_THREADS
        res = lutimes(path, NULL);
        Py_END_ALLOW_THREADS
    }
    else if (!PyTuple_Check(arg) || PyTuple_Size(arg) != 2) {
        PyErr_SetString(PyExc_TypeError,
            "lutimes() arg 2 must be a tuple (atime, mtime)");
        Py_DECREF(opath);
        return NULL;
    }
    else {
        if (extract_time(PyTuple_GET_ITEM(arg, 0),
3822
                &atime, &ansec) == -1) {
3823 3824 3825 3826
            Py_DECREF(opath);
            return NULL;
        }
        if (extract_time(PyTuple_GET_ITEM(arg, 1),
3827
                &mtime, &mnsec) == -1) {
3828 3829 3830
            Py_DECREF(opath);
            return NULL;
        }
3831 3832 3833 3834 3835
        Py_BEGIN_ALLOW_THREADS
        {
#ifdef HAVE_UTIMENSAT
        struct timespec buf[2];
        buf[0].tv_sec = atime;
3836
        buf[0].tv_nsec = ansec;
3837
        buf[1].tv_sec = mtime;
3838
        buf[1].tv_nsec = mnsec;
3839 3840 3841 3842
        res = utimensat(AT_FDCWD, path, buf, AT_SYMLINK_NOFOLLOW);
#else
        struct timeval buf[2];
        buf[0].tv_sec = atime;
3843
        buf[0].tv_usec = ansec / 1000;
3844
        buf[1].tv_sec = mtime;
3845
        buf[1].tv_usec = mnsec / 1000;
3846
        res = lutimes(path, buf);
3847 3848
#endif
        }
3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859
        Py_END_ALLOW_THREADS
    }
    Py_DECREF(opath);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif

#ifdef HAVE_FUTIMENS
PyDoc_STRVAR(posix_futimens__doc__,
3860
"futimens(fd[, (atime_sec, atime_nsec), (mtime_sec, mtime_nsec)])\n\
3861 3862
Updates the timestamps of a file specified by the file descriptor fd, with\n\
nanosecond precision.\n\
3863
If no second argument is given, set atime and mtime to the current time.\n\
3864 3865 3866 3867 3868 3869 3870 3871
If *_nsec is specified as UTIME_NOW, the timestamp is updated to the\n\
current time.\n\
If *_nsec is specified as UTIME_OMIT, the timestamp is not updated.");

static PyObject *
posix_futimens(PyObject *self, PyObject *args)
{
    int res, fd;
3872 3873
    PyObject *atime = Py_None;
    PyObject *mtime = Py_None;
3874 3875
    struct timespec buf[2];

3876
    if (!PyArg_ParseTuple(args, "i|OO:futimens",
3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912
            &fd, &atime, &mtime))
        return NULL;
    if (atime == Py_None && mtime == Py_None) {
        /* optional time values not given */
        Py_BEGIN_ALLOW_THREADS
        res = futimens(fd, NULL);
        Py_END_ALLOW_THREADS
    }
    else if (!PyTuple_Check(atime) || PyTuple_Size(atime) != 2) {
        PyErr_SetString(PyExc_TypeError,
            "futimens() arg 2 must be a tuple (atime_sec, atime_nsec)");
        return NULL;
    }
    else if (!PyTuple_Check(mtime) || PyTuple_Size(mtime) != 2) {
        PyErr_SetString(PyExc_TypeError,
            "futimens() arg 3 must be a tuple (mtime_sec, mtime_nsec)");
        return NULL;
    }
    else {
        if (!PyArg_ParseTuple(atime, "ll:futimens",
                &(buf[0].tv_sec), &(buf[0].tv_nsec))) {
            return NULL;
        }
        if (!PyArg_ParseTuple(mtime, "ll:futimens",
                &(buf[1].tv_sec), &(buf[1].tv_nsec))) {
            return NULL;
        }
        Py_BEGIN_ALLOW_THREADS
        res = futimens(fd, buf);
        Py_END_ALLOW_THREADS
    }
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif
3913

Guido van Rossum's avatar
Guido van Rossum committed
3914
/* Process operations */
3915

3916
PyDoc_STRVAR(posix__exit__doc__,
Fred Drake's avatar
Fred Drake committed
3917
"_exit(status)\n\n\
3918
Exit to the system with specified status, without normal exit processing.");
3919

Barry Warsaw's avatar
Barry Warsaw committed
3920
static PyObject *
3921
posix__exit(PyObject *self, PyObject *args)
3922
{
3923 3924 3925 3926 3927
    int sts;
    if (!PyArg_ParseTuple(args, "i:_exit", &sts))
        return NULL;
    _exit(sts);
    return NULL; /* Make gcc -Wall happy */
3928 3929
}

3930 3931
#if defined(HAVE_EXECV) || defined(HAVE_SPAWNV)
static void
3932
free_string_array(char **array, Py_ssize_t count)
3933
{
3934 3935 3936 3937
    Py_ssize_t i;
    for (i = 0; i < count; i++)
        PyMem_Free(array[i]);
    PyMem_DEL(array);
3938
}
3939

3940
static
3941 3942
int fsconvert_strdup(PyObject *o, char**out)
{
3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953
    PyObject *bytes;
    Py_ssize_t size;
    if (!PyUnicode_FSConverter(o, &bytes))
        return 0;
    size = PyBytes_GET_SIZE(bytes);
    *out = PyMem_Malloc(size+1);
    if (!*out)
        return 0;
    memcpy(*out, PyBytes_AsString(bytes), size+1);
    Py_DECREF(bytes);
    return 1;
3954
}
3955 3956
#endif

3957
#if defined(HAVE_EXECV) || defined (HAVE_FEXECVE)
3958 3959 3960
static char**
parse_envlist(PyObject* env, Py_ssize_t *envc_ptr)
{
3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998
    char **envlist;
    Py_ssize_t i, pos, envc;
    PyObject *keys=NULL, *vals=NULL;
    PyObject *key, *val, *key2, *val2;
    char *p, *k, *v;
    size_t len;

    i = PyMapping_Size(env);
    if (i < 0)
        return NULL;
    envlist = PyMem_NEW(char *, i + 1);
    if (envlist == NULL) {
        PyErr_NoMemory();
        return NULL;
    }
    envc = 0;
    keys = PyMapping_Keys(env);
    vals = PyMapping_Values(env);
    if (!keys || !vals)
        goto error;
    if (!PyList_Check(keys) || !PyList_Check(vals)) {
        PyErr_Format(PyExc_TypeError,
                     "env.keys() or env.values() is not a list");
        goto error;
    }

    for (pos = 0; pos < i; pos++) {
        key = PyList_GetItem(keys, pos);
        val = PyList_GetItem(vals, pos);
        if (!key || !val)
            goto error;

        if (PyUnicode_FSConverter(key, &key2) == 0)
            goto error;
        if (PyUnicode_FSConverter(val, &val2) == 0) {
            Py_DECREF(key2);
            goto error;
        }
3999 4000

#if defined(PYOS_OS2)
4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018
        /* Omit Pseudo-Env Vars that Would Confuse Programs if Passed On */
        if (stricmp(k, "BEGINLIBPATH") != 0 && stricmp(k, "ENDLIBPATH") != 0) {
#endif
        k = PyBytes_AsString(key2);
        v = PyBytes_AsString(val2);
        len = PyBytes_GET_SIZE(key2) + PyBytes_GET_SIZE(val2) + 2;

        p = PyMem_NEW(char, len);
        if (p == NULL) {
            PyErr_NoMemory();
            Py_DECREF(key2);
            Py_DECREF(val2);
            goto error;
        }
        PyOS_snprintf(p, len, "%s=%s", k, v);
        envlist[envc++] = p;
        Py_DECREF(key2);
        Py_DECREF(val2);
4019
#if defined(PYOS_OS2)
4020
        }
4021
#endif
4022 4023 4024
    }
    Py_DECREF(vals);
    Py_DECREF(keys);
4025

4026 4027 4028
    envlist[envc] = 0;
    *envc_ptr = envc;
    return envlist;
4029 4030

error:
4031 4032 4033 4034 4035 4036
    Py_XDECREF(keys);
    Py_XDECREF(vals);
    while (--envc >= 0)
        PyMem_DEL(envlist[envc]);
    PyMem_DEL(envlist);
    return NULL;
4037
}
4038

4039 4040 4041 4042 4043 4044 4045 4046 4047 4048
static char**
parse_arglist(PyObject* argv, Py_ssize_t *argc)
{
    int i;
    char **argvlist = PyMem_NEW(char *, *argc+1);
    if (argvlist == NULL) {
        PyErr_NoMemory();
        return NULL;
    }
    for (i = 0; i < *argc; i++) {
4049 4050 4051 4052 4053
        PyObject* item = PySequence_ITEM(argv, i);
        if (item == NULL)
            goto fail;
        if (!fsconvert_strdup(item, &argvlist[i])) {
            Py_DECREF(item);
4054 4055
            goto fail;
        }
4056
        Py_DECREF(item);
4057 4058 4059 4060
    }
    argvlist[*argc] = NULL;
    return argvlist;
fail:
4061
    *argc = i;
4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119
    free_string_array(argvlist, *argc);
    return NULL;
}
#endif

#ifdef HAVE_EXECV
PyDoc_STRVAR(posix_execv__doc__,
"execv(path, args)\n\n\
Execute an executable path with arguments, replacing current process.\n\
\n\
    path: path of executable file\n\
    args: tuple or list of strings");

static PyObject *
posix_execv(PyObject *self, PyObject *args)
{
    PyObject *opath;
    char *path;
    PyObject *argv;
    char **argvlist;
    Py_ssize_t argc;

    /* execv has two arguments: (path, argv), where
       argv is a list or tuple of strings. */

    if (!PyArg_ParseTuple(args, "O&O:execv",
                          PyUnicode_FSConverter,
                          &opath, &argv))
        return NULL;
    path = PyBytes_AsString(opath);
    if (!PyList_Check(argv) && !PyTuple_Check(argv)) {
        PyErr_SetString(PyExc_TypeError,
                        "execv() arg 2 must be a tuple or list");
        Py_DECREF(opath);
        return NULL;
    }
    argc = PySequence_Size(argv);
    if (argc < 1) {
        PyErr_SetString(PyExc_ValueError, "execv() arg 2 must not be empty");
        Py_DECREF(opath);
        return NULL;
    }

    argvlist = parse_arglist(argv, &argc);
    if (argvlist == NULL) {
        Py_DECREF(opath);
        return NULL;
    }

    execv(path, argvlist);

    /* If we get here it's definitely an error */

    free_string_array(argvlist, argc);
    Py_DECREF(opath);
    return posix_error();
}

4120
PyDoc_STRVAR(posix_execve__doc__,
Fred Drake's avatar
Fred Drake committed
4121
"execve(path, args, env)\n\n\
4122 4123
Execute a path with arguments and environment, replacing current process.\n\
\n\
4124 4125 4126
    path: path of executable file\n\
    args: tuple or list of arguments\n\
    env: dictionary of strings mapping to strings");
4127

Barry Warsaw's avatar
Barry Warsaw committed
4128
static PyObject *
4129
posix_execve(PyObject *self, PyObject *args)
4130
{
4131 4132 4133 4134 4135
    PyObject *opath;
    char *path;
    PyObject *argv, *env;
    char **argvlist;
    char **envlist;
4136
    Py_ssize_t argc, envc;
4137 4138 4139 4140 4141 4142 4143 4144 4145 4146

    /* execve has three arguments: (path, argv, env), where
       argv is a list or tuple of strings and env is a dictionary
       like posix.environ. */

    if (!PyArg_ParseTuple(args, "O&OO:execve",
                          PyUnicode_FSConverter,
                          &opath, &argv, &env))
        return NULL;
    path = PyBytes_AsString(opath);
4147
    if (!PyList_Check(argv) && !PyTuple_Check(argv)) {
4148 4149 4150 4151
        PyErr_SetString(PyExc_TypeError,
                        "execve() arg 2 must be a tuple or list");
        goto fail_0;
    }
4152
    argc = PySequence_Size(argv);
4153 4154 4155 4156 4157 4158
    if (!PyMapping_Check(env)) {
        PyErr_SetString(PyExc_TypeError,
                        "execve() arg 3 must be a mapping object");
        goto fail_0;
    }

4159
    argvlist = parse_arglist(argv, &argc);
4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176
    if (argvlist == NULL) {
        goto fail_0;
    }

    envlist = parse_envlist(env, &envc);
    if (envlist == NULL)
        goto fail_1;

    execve(path, argvlist, envlist);

    /* If we get here it's definitely an error */

    (void) posix_error();

    while (--envc >= 0)
        PyMem_DEL(envlist[envc]);
    PyMem_DEL(envlist);
4177
  fail_1:
4178
    free_string_array(argvlist, argc);
4179
  fail_0:
4180 4181
    Py_DECREF(opath);
    return NULL;
4182
}
4183
#endif /* HAVE_EXECV */
4184

4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240
#ifdef HAVE_FEXECVE
PyDoc_STRVAR(posix_fexecve__doc__,
"fexecve(fd, args, env)\n\n\
Execute the program specified by a file descriptor with arguments and\n\
environment, replacing the current process.\n\
\n\
    fd: file descriptor of executable\n\
    args: tuple or list of arguments\n\
    env: dictionary of strings mapping to strings");

static PyObject *
posix_fexecve(PyObject *self, PyObject *args)
{
    int fd;
    PyObject *argv, *env;
    char **argvlist;
    char **envlist;
    Py_ssize_t argc, envc;

    if (!PyArg_ParseTuple(args, "iOO:fexecve",
                          &fd, &argv, &env))
        return NULL;
    if (!PyList_Check(argv) && !PyTuple_Check(argv)) {
        PyErr_SetString(PyExc_TypeError,
                        "fexecve() arg 2 must be a tuple or list");
        return NULL;
    }
    argc = PySequence_Size(argv);
    if (!PyMapping_Check(env)) {
        PyErr_SetString(PyExc_TypeError,
                        "fexecve() arg 3 must be a mapping object");
        return NULL;
    }

    argvlist = parse_arglist(argv, &argc);
    if (argvlist == NULL)
        return NULL;

    envlist = parse_envlist(env, &envc);
    if (envlist == NULL)
        goto fail;

    fexecve(fd, argvlist, envlist);

    /* If we get here it's definitely an error */

    (void) posix_error();

    while (--envc >= 0)
        PyMem_DEL(envlist[envc]);
    PyMem_DEL(envlist);
  fail:
    free_string_array(argvlist, argc);
    return NULL;
}
#endif /* HAVE_FEXECVE */
4241

4242
#ifdef HAVE_SPAWNV
4243
PyDoc_STRVAR(posix_spawnv__doc__,
Fred Drake's avatar
Fred Drake committed
4244
"spawnv(mode, path, args)\n\n\
4245
Execute the program 'path' in a new process.\n\
4246
\n\
4247 4248 4249
    mode: mode of process creation\n\
    path: path of executable file\n\
    args: tuple or list of strings");
4250 4251

static PyObject *
4252
posix_spawnv(PyObject *self, PyObject *args)
4253
{
4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302
    PyObject *opath;
    char *path;
    PyObject *argv;
    char **argvlist;
    int mode, i;
    Py_ssize_t argc;
    Py_intptr_t spawnval;
    PyObject *(*getitem)(PyObject *, Py_ssize_t);

    /* spawnv has three arguments: (mode, path, argv), where
       argv is a list or tuple of strings. */

    if (!PyArg_ParseTuple(args, "iO&O:spawnv", &mode,
                          PyUnicode_FSConverter,
                          &opath, &argv))
        return NULL;
    path = PyBytes_AsString(opath);
    if (PyList_Check(argv)) {
        argc = PyList_Size(argv);
        getitem = PyList_GetItem;
    }
    else if (PyTuple_Check(argv)) {
        argc = PyTuple_Size(argv);
        getitem = PyTuple_GetItem;
    }
    else {
        PyErr_SetString(PyExc_TypeError,
                        "spawnv() arg 2 must be a tuple or list");
        Py_DECREF(opath);
        return NULL;
    }

    argvlist = PyMem_NEW(char *, argc+1);
    if (argvlist == NULL) {
        Py_DECREF(opath);
        return PyErr_NoMemory();
    }
    for (i = 0; i < argc; i++) {
        if (!fsconvert_strdup((*getitem)(argv, i),
                              &argvlist[i])) {
            free_string_array(argvlist, i);
            PyErr_SetString(
                PyExc_TypeError,
                "spawnv() arg 2 must contain only strings");
            Py_DECREF(opath);
            return NULL;
        }
    }
    argvlist[argc] = NULL;
4303

4304
#if defined(PYOS_OS2) && defined(PYCC_GCC)
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    Py_BEGIN_ALLOW_THREADS
    spawnval = spawnv(mode, path, argvlist);
    Py_END_ALLOW_THREADS
4308
#else
4309 4310
    if (mode == _OLD_P_OVERLAY)
        mode = _P_OVERLAY;
4311

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    Py_BEGIN_ALLOW_THREADS
    spawnval = _spawnv(mode, path, argvlist);
    Py_END_ALLOW_THREADS
4315
#endif
4316

4317 4318
    free_string_array(argvlist, argc);
    Py_DECREF(opath);
4319

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    if (spawnval == -1)
        return posix_error();
    else
4323
#if SIZEOF_LONG == SIZEOF_VOID_P
4324
        return Py_BuildValue("l", (long) spawnval);
4325
#else
4326
        return Py_BuildValue("L", (PY_LONG_LONG) spawnval);
4327
#endif
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}


4331
PyDoc_STRVAR(posix_spawnve__doc__,
Fred Drake's avatar
Fred Drake committed
4332
"spawnve(mode, path, args, env)\n\n\
4333
Execute the program 'path' in a new process.\n\
4334
\n\
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    mode: mode of process creation\n\
    path: path of executable file\n\
    args: tuple or list of arguments\n\
    env: dictionary of strings mapping to strings");
4339 4340

static PyObject *
4341
posix_spawnve(PyObject *self, PyObject *args)
4342
{
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    PyObject *opath;
    char *path;
    PyObject *argv, *env;
    char **argvlist;
    char **envlist;
    PyObject *res = NULL;
4349 4350
    int mode;
    Py_ssize_t argc, i, envc;
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    Py_intptr_t spawnval;
    PyObject *(*getitem)(PyObject *, Py_ssize_t);
    Py_ssize_t lastarg = 0;

    /* spawnve has four arguments: (mode, path, argv, env), where
       argv is a list or tuple of strings and env is a dictionary
       like posix.environ. */

    if (!PyArg_ParseTuple(args, "iO&OO:spawnve", &mode,
                          PyUnicode_FSConverter,
                          &opath, &argv, &env))
        return NULL;
    path = PyBytes_AsString(opath);
    if (PyList_Check(argv)) {
        argc = PyList_Size(argv);
        getitem = PyList_GetItem;
    }
    else if (PyTuple_Check(argv)) {
        argc = PyTuple_Size(argv);
        getitem = PyTuple_GetItem;
    }
    else {
        PyErr_SetString(PyExc_TypeError,
                        "spawnve() arg 2 must be a tuple or list");
        goto fail_0;
    }
    if (!PyMapping_Check(env)) {
        PyErr_SetString(PyExc_TypeError,
                        "spawnve() arg 3 must be a mapping object");
        goto fail_0;
    }

    argvlist = PyMem_NEW(char *, argc+1);
    if (argvlist == NULL) {
        PyErr_NoMemory();
        goto fail_0;
    }
    for (i = 0; i < argc; i++) {
        if (!fsconvert_strdup((*getitem)(argv, i),
                              &argvlist[i]))
        {
            lastarg = i;
            goto fail_1;
        }
    }
    lastarg = argc;
    argvlist[argc] = NULL;

    envlist = parse_envlist(env, &envc);
    if (envlist == NULL)
        goto fail_1;
4402

4403
#if defined(PYOS_OS2) && defined(PYCC_GCC)
4404 4405 4406
    Py_BEGIN_ALLOW_THREADS
    spawnval = spawnve(mode, path, argvlist, envlist);
    Py_END_ALLOW_THREADS
4407
#else
4408 4409
    if (mode == _OLD_P_OVERLAY)
        mode = _P_OVERLAY;
4410

4411 4412 4413
    Py_BEGIN_ALLOW_THREADS
    spawnval = _spawnve(mode, path, argvlist, envlist);
    Py_END_ALLOW_THREADS
4414
#endif
4415

4416 4417 4418
    if (spawnval == -1)
        (void) posix_error();
    else
4419
#if SIZEOF_LONG == SIZEOF_VOID_P
4420
        res = Py_BuildValue("l", (long) spawnval);
4421
#else
4422
        res = Py_BuildValue("L", (PY_LONG_LONG) spawnval);
4423
#endif
4424

4425 4426 4427
    while (--envc >= 0)
        PyMem_DEL(envlist[envc]);
    PyMem_DEL(envlist);
4428
  fail_1:
4429
    free_string_array(argvlist, lastarg);
4430
  fail_0:
4431 4432
    Py_DECREF(opath);
    return res;
4433
}
4434 4435 4436 4437 4438 4439 4440 4441

/* OS/2 supports spawnvp & spawnvpe natively */
#if defined(PYOS_OS2)
PyDoc_STRVAR(posix_spawnvp__doc__,
"spawnvp(mode, file, args)\n\n\
Execute the program 'file' in a new process, using the environment\n\
search path to find the file.\n\
\n\
4442 4443 4444
    mode: mode of process creation\n\
    file: executable file name\n\
    args: tuple or list of strings");
4445 4446 4447 4448

static PyObject *
posix_spawnvp(PyObject *self, PyObject *args)
{
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    PyObject *opath;
    char *path;
    PyObject *argv;
    char **argvlist;
    int mode, i, argc;
    Py_intptr_t spawnval;
    PyObject *(*getitem)(PyObject *, Py_ssize_t);

    /* spawnvp has three arguments: (mode, path, argv), where
       argv is a list or tuple of strings. */

    if (!PyArg_ParseTuple(args, "iO&O:spawnvp", &mode,
                          PyUnicode_FSConverter,
                          &opath, &argv))
        return NULL;
    path = PyBytes_AsString(opath);
    if (PyList_Check(argv)) {
        argc = PyList_Size(argv);
        getitem = PyList_GetItem;
    }
    else if (PyTuple_Check(argv)) {
        argc = PyTuple_Size(argv);
        getitem = PyTuple_GetItem;
    }
    else {
        PyErr_SetString(PyExc_TypeError,
                        "spawnvp() arg 2 must be a tuple or list");
        Py_DECREF(opath);
        return NULL;
    }

    argvlist = PyMem_NEW(char *, argc+1);
    if (argvlist == NULL) {
        Py_DECREF(opath);
        return PyErr_NoMemory();
    }
    for (i = 0; i < argc; i++) {
        if (!fsconvert_strdup((*getitem)(argv, i),
                              &argvlist[i])) {
            free_string_array(argvlist, i);
            PyErr_SetString(
                PyExc_TypeError,
                "spawnvp() arg 2 must contain only strings");
            Py_DECREF(opath);
            return NULL;
        }
    }
    argvlist[argc] = NULL;

    Py_BEGIN_ALLOW_THREADS
4499
#if defined(PYCC_GCC)
4500
    spawnval = spawnvp(mode, path, argvlist);
4501
#else
4502
    spawnval = _spawnvp(mode, path, argvlist);
4503
#endif
4504
    Py_END_ALLOW_THREADS
4505

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    free_string_array(argvlist, argc);
    Py_DECREF(opath);
4508

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    if (spawnval == -1)
        return posix_error();
    else
        return Py_BuildValue("l", (long) spawnval);
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}


PyDoc_STRVAR(posix_spawnvpe__doc__,
"spawnvpe(mode, file, args, env)\n\n\
Execute the program 'file' in a new process, using the environment\n\
search path to find the file.\n\
\n\
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    mode: mode of process creation\n\
    file: executable file name\n\
    args: tuple or list of arguments\n\
    env: dictionary of strings mapping to strings");
4525 4526 4527 4528

static PyObject *
posix_spawnvpe(PyObject *self, PyObject *args)
{
4529
    PyObject *opath;
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    char *path;
    PyObject *argv, *env;
    char **argvlist;
    char **envlist;
    PyObject *res=NULL;
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    int mode;
    Py_ssize_t argc, i, envc;
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    Py_intptr_t spawnval;
    PyObject *(*getitem)(PyObject *, Py_ssize_t);
    int lastarg = 0;

    /* spawnvpe has four arguments: (mode, path, argv, env), where
       argv is a list or tuple of strings and env is a dictionary
       like posix.environ. */

    if (!PyArg_ParseTuple(args, "ietOO:spawnvpe", &mode,
                          PyUnicode_FSConverter,
                          &opath, &argv, &env))
        return NULL;
    path = PyBytes_AsString(opath);
    if (PyList_Check(argv)) {
        argc = PyList_Size(argv);
        getitem = PyList_GetItem;
    }
    else if (PyTuple_Check(argv)) {
        argc = PyTuple_Size(argv);
        getitem = PyTuple_GetItem;
    }
    else {
        PyErr_SetString(PyExc_TypeError,
                        "spawnvpe() arg 2 must be a tuple or list");
        goto fail_0;
    }
    if (!PyMapping_Check(env)) {
        PyErr_SetString(PyExc_TypeError,
                        "spawnvpe() arg 3 must be a mapping object");
        goto fail_0;
    }

    argvlist = PyMem_NEW(char *, argc+1);
    if (argvlist == NULL) {
        PyErr_NoMemory();
        goto fail_0;
    }
    for (i = 0; i < argc; i++) {
        if (!fsconvert_strdup((*getitem)(argv, i),
                              &argvlist[i]))
        {
            lastarg = i;
            goto fail_1;
        }
    }
    lastarg = argc;
    argvlist[argc] = NULL;

    envlist = parse_envlist(env, &envc);
    if (envlist == NULL)
        goto fail_1;

    Py_BEGIN_ALLOW_THREADS
4590
#if defined(PYCC_GCC)
4591
    spawnval = spawnvpe(mode, path, argvlist, envlist);
4592
#else
4593
    spawnval = _spawnvpe(mode, path, argvlist, envlist);
4594
#endif
4595
    Py_END_ALLOW_THREADS
4596

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    if (spawnval == -1)
        (void) posix_error();
    else
        res = Py_BuildValue("l", (long) spawnval);
4601

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    while (--envc >= 0)
        PyMem_DEL(envlist[envc]);
    PyMem_DEL(envlist);
4605
  fail_1:
4606
    free_string_array(argvlist, lastarg);
4607
  fail_0:
4608 4609
    Py_DECREF(opath);
    return res;
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}
#endif /* PYOS_OS2 */
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#endif /* HAVE_SPAWNV */


4615
#ifdef HAVE_FORK1
4616
PyDoc_STRVAR(posix_fork1__doc__,
Fred Drake's avatar
Fred Drake committed
4617
"fork1() -> pid\n\n\
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Fork a child process with a single multiplexed (i.e., not bound) thread.\n\
\n\
4620
Return 0 to child process and PID of child to parent process.");
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static PyObject *
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posix_fork1(PyObject *self, PyObject *noargs)
4624
{
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    pid_t pid;
    int result = 0;
    _PyImport_AcquireLock();
    pid = fork1();
    if (pid == 0) {
        /* child: this clobbers and resets the import lock. */
        PyOS_AfterFork();
    } else {
        /* parent: release the import lock. */
        result = _PyImport_ReleaseLock();
    }
    if (pid == -1)
        return posix_error();
    if (result < 0) {
        /* Don't clobber the OSError if the fork failed. */
        PyErr_SetString(PyExc_RuntimeError,
                        "not holding the import lock");
        return NULL;
    }
    return PyLong_FromPid(pid);
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}
#endif


Guido van Rossum's avatar
Guido van Rossum committed
4649
#ifdef HAVE_FORK
4650
PyDoc_STRVAR(posix_fork__doc__,
Fred Drake's avatar
Fred Drake committed
4651
"fork() -> pid\n\n\
4652
Fork a child process.\n\
4653
Return 0 to child process and PID of child to parent process.");
4654

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Barry Warsaw committed
4655
static PyObject *
4656
posix_fork(PyObject *self, PyObject *noargs)
4657
{
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    pid_t pid;
    int result = 0;
    _PyImport_AcquireLock();
    pid = fork();
    if (pid == 0) {
        /* child: this clobbers and resets the import lock. */
        PyOS_AfterFork();
    } else {
        /* parent: release the import lock. */
        result = _PyImport_ReleaseLock();
    }
    if (pid == -1)
        return posix_error();
    if (result < 0) {
        /* Don't clobber the OSError if the fork failed. */
        PyErr_SetString(PyExc_RuntimeError,
                        "not holding the import lock");
        return NULL;
    }
    return PyLong_FromPid(pid);
4678
}
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4679
#endif
4680

4681 4682
#ifdef HAVE_SCHED_H

4683 4684
#ifdef HAVE_SCHED_GET_PRIORITY_MAX

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PyDoc_STRVAR(posix_sched_get_priority_max__doc__,
"sched_get_priority_max(policy)\n\n\
Get the maximum scheduling priority for *policy*.");

static PyObject *
posix_sched_get_priority_max(PyObject *self, PyObject *args)
{
    int policy, max;

    if (!PyArg_ParseTuple(args, "i:sched_get_priority_max", &policy))
        return NULL;
    max = sched_get_priority_max(policy);
    if (max < 0)
        return posix_error();
    return PyLong_FromLong(max);
}

PyDoc_STRVAR(posix_sched_get_priority_min__doc__,
"sched_get_priority_min(policy)\n\n\
Get the minimum scheduling priority for *policy*.");

static PyObject *
posix_sched_get_priority_min(PyObject *self, PyObject *args)
{
    int policy, min;

    if (!PyArg_ParseTuple(args, "i:sched_get_priority_min", &policy))
        return NULL;
    min = sched_get_priority_min(policy);
    if (min < 0)
        return posix_error();
    return PyLong_FromLong(min);
}

4719 4720
#endif /* HAVE_SCHED_GET_PRIORITY_MAX */

4721 4722
#ifdef HAVE_SCHED_SETSCHEDULER

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PyDoc_STRVAR(posix_sched_getscheduler__doc__,
"sched_getscheduler(pid)\n\n\
Get the scheduling policy for the process with a PID of *pid*.\n\
Passing a PID of 0 returns the scheduling policy for the calling process.");

static PyObject *
posix_sched_getscheduler(PyObject *self, PyObject *args)
{
    pid_t pid;
    int policy;

    if (!PyArg_ParseTuple(args, _Py_PARSE_PID ":sched_getscheduler", &pid))
        return NULL;
    policy = sched_getscheduler(pid);
    if (policy < 0)
        return posix_error();
    return PyLong_FromLong(policy);
}

4742 4743 4744 4745
#endif

#if defined(HAVE_SCHED_SETSCHEDULER) || defined(HAVE_SCHED_SETPARAM)

4746 4747 4748 4749
static PyObject *
sched_param_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
    PyObject *res, *priority;
Benjamin Peterson's avatar
Benjamin Peterson committed
4750
    static char *kwlist[] = {"sched_priority", NULL};
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    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O:sched_param", kwlist, &priority))
        return NULL;
    res = PyStructSequence_New(type);
    if (!res)
        return NULL;
    Py_INCREF(priority);
    PyStructSequence_SET_ITEM(res, 0, priority);
    return res;
}

PyDoc_STRVAR(sched_param__doc__,
"sched_param(sched_priority): A scheduling parameter.\n\n\
Current has only one field: sched_priority");

static PyStructSequence_Field sched_param_fields[] = {
    {"sched_priority", "the scheduling priority"},
    {0}
};

static PyStructSequence_Desc sched_param_desc = {
    "sched_param", /* name */
    sched_param__doc__, /* doc */
    sched_param_fields,
    1
};

static int
convert_sched_param(PyObject *param, struct sched_param *res)
{
    long priority;

    if (Py_TYPE(param) != &SchedParamType) {
        PyErr_SetString(PyExc_TypeError, "must have a sched_param object");
        return 0;
    }
    priority = PyLong_AsLong(PyStructSequence_GET_ITEM(param, 0));
    if (priority == -1 && PyErr_Occurred())
        return 0;
    if (priority > INT_MAX || priority < INT_MIN) {
        PyErr_SetString(PyExc_OverflowError, "sched_priority out of range");
        return 0;
    }
    res->sched_priority = Py_SAFE_DOWNCAST(priority, long, int);
    return 1;
}

4798 4799 4800 4801
#endif

#ifdef HAVE_SCHED_SETSCHEDULER

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PyDoc_STRVAR(posix_sched_setscheduler__doc__,
"sched_setscheduler(pid, policy, param)\n\n\
Set the scheduling policy, *policy*, for *pid*.\n\
If *pid* is 0, the calling process is changed.\n\
*param* is an instance of sched_param.");

static PyObject *
posix_sched_setscheduler(PyObject *self, PyObject *args)
{
    pid_t pid;
    int policy;
    struct sched_param param;

    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "iO&:sched_setscheduler",
                          &pid, &policy, &convert_sched_param, &param))
        return NULL;
4818 4819

    /*
Jesus Cea's avatar
Typo  
Jesus Cea committed
4820 4821 4822
    ** sched_setscheduler() returns 0 in Linux, but the previous
    ** scheduling policy under Solaris/Illumos, and others.
    ** On error, -1 is returned in all Operating Systems.
4823 4824
    */
    if (sched_setscheduler(pid, policy, &param) == -1)
4825 4826 4827 4828
        return posix_error();
    Py_RETURN_NONE;
}

4829 4830 4831 4832
#endif

#ifdef HAVE_SCHED_SETPARAM

4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879
PyDoc_STRVAR(posix_sched_getparam__doc__,
"sched_getparam(pid) -> sched_param\n\n\
Returns scheduling parameters for the process with *pid* as an instance of the\n\
sched_param class. A PID of 0 means the calling process.");

static PyObject *
posix_sched_getparam(PyObject *self, PyObject *args)
{
    pid_t pid;
    struct sched_param param;
    PyObject *res, *priority;

    if (!PyArg_ParseTuple(args, _Py_PARSE_PID ":sched_getparam", &pid))
        return NULL;
    if (sched_getparam(pid, &param))
        return posix_error();
    res = PyStructSequence_New(&SchedParamType);
    if (!res)
        return NULL;
    priority = PyLong_FromLong(param.sched_priority);
    if (!priority) {
        Py_DECREF(res);
        return NULL;
    }
    PyStructSequence_SET_ITEM(res, 0, priority);
    return res;
}

PyDoc_STRVAR(posix_sched_setparam__doc__,
"sched_setparam(pid, param)\n\n\
Set scheduling parameters for a process with PID *pid*.\n\
A PID of 0 means the calling process.");

static PyObject *
posix_sched_setparam(PyObject *self, PyObject *args)
{
    pid_t pid;
    struct sched_param param;

    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "O&:sched_setparam",
                          &pid, &convert_sched_param, &param))
        return NULL;
    if (sched_setparam(pid, &param))
        return posix_error();
    Py_RETURN_NONE;
}

4880 4881 4882 4883
#endif

#ifdef HAVE_SCHED_RR_GET_INTERVAL

4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900
PyDoc_STRVAR(posix_sched_rr_get_interval__doc__,
"sched_rr_get_interval(pid) -> float\n\n\
Return the round-robin quantum for the process with PID *pid* in seconds.");

static PyObject *
posix_sched_rr_get_interval(PyObject *self, PyObject *args)
{
    pid_t pid;
    struct timespec interval;

    if (!PyArg_ParseTuple(args, _Py_PARSE_PID ":sched_rr_get_interval", &pid))
        return NULL;
    if (sched_rr_get_interval(pid, &interval))
        return posix_error();
    return PyFloat_FromDouble((double)interval.tv_sec + 1e-9*interval.tv_nsec);
}

4901 4902
#endif

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PyDoc_STRVAR(posix_sched_yield__doc__,
"sched_yield()\n\n\
Voluntarily relinquish the CPU.");

static PyObject *
posix_sched_yield(PyObject *self, PyObject *noargs)
{
    if (sched_yield())
        return posix_error();
    Py_RETURN_NONE;
}

4915 4916
#ifdef HAVE_SCHED_SETAFFINITY

4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972
typedef struct {
    PyObject_HEAD;
    Py_ssize_t size;
    int ncpus;
    cpu_set_t *set;
} Py_cpu_set;

static PyTypeObject cpu_set_type;

static void
cpu_set_dealloc(Py_cpu_set *set)
{
    assert(set->set);
    CPU_FREE(set->set);
    Py_TYPE(set)->tp_free(set);
}

static Py_cpu_set *
make_new_cpu_set(PyTypeObject *type, Py_ssize_t size)
{
    Py_cpu_set *set;

    if (size < 0) {
        PyErr_SetString(PyExc_ValueError, "negative size");
        return NULL;
    }
    set = (Py_cpu_set *)type->tp_alloc(type, 0);
    if (!set)
        return NULL;
    set->ncpus = size;
    set->size = CPU_ALLOC_SIZE(size);
    set->set = CPU_ALLOC(size);
    if (!set->set) {
        type->tp_free(set);
        PyErr_NoMemory();
        return NULL;
    }
    CPU_ZERO_S(set->size, set->set);
    return set;
}

static PyObject *
cpu_set_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
    int size;

    if (!_PyArg_NoKeywords("cpu_set()", kwargs) ||
        !PyArg_ParseTuple(args, "i:cpu_set", &size))
        return NULL;
    return (PyObject *)make_new_cpu_set(type, size);
}

static PyObject *
cpu_set_repr(Py_cpu_set *set)
{
    return PyUnicode_FromFormat("<cpu_set with %li entries>", set->ncpus);
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}
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static Py_ssize_t
cpu_set_len(Py_cpu_set *set)
{
    return set->ncpus;
}

static int
_get_cpu(Py_cpu_set *set, const char *requester, PyObject *args)
{
    int cpu;
    if (!PyArg_ParseTuple(args, requester, &cpu))
        return -1;
    if (cpu < 0) {
        PyErr_SetString(PyExc_ValueError, "cpu < 0 not valid");
        return -1;
    }
    if (cpu >= set->ncpus) {
        PyErr_SetString(PyExc_ValueError, "cpu too large for set");
        return -1;
    }
    return cpu;
}

PyDoc_STRVAR(cpu_set_set_doc,
"cpu_set.set(i)\n\n\
Add CPU *i* to the set.");

static PyObject *
cpu_set_set(Py_cpu_set *set, PyObject *args)
{
    int cpu = _get_cpu(set, "i|set", args);
    if (cpu == -1)
        return NULL;
    CPU_SET_S(cpu, set->size, set->set);
    Py_RETURN_NONE;
}

PyDoc_STRVAR(cpu_set_count_doc,
"cpu_set.count() -> int\n\n\
Return the number of CPUs active in the set.");

static PyObject *
cpu_set_count(Py_cpu_set *set, PyObject *noargs)
{
    return PyLong_FromLong(CPU_COUNT_S(set->size, set->set));
}

PyDoc_STRVAR(cpu_set_clear_doc,
"cpu_set.clear(i)\n\n\
Remove CPU *i* from the set.");

static PyObject *
cpu_set_clear(Py_cpu_set *set, PyObject *args)
{
    int cpu = _get_cpu(set, "i|clear", args);
    if (cpu == -1)
        return NULL;
    CPU_CLR_S(cpu, set->size, set->set);
    Py_RETURN_NONE;
}

PyDoc_STRVAR(cpu_set_isset_doc,
"cpu_set.isset(i) -> bool\n\n\
Test if CPU *i* is in the set.");

static PyObject *
cpu_set_isset(Py_cpu_set *set, PyObject *args)
{
    int cpu = _get_cpu(set, "i|isset", args);
    if (cpu == -1)
        return NULL;
    if (CPU_ISSET_S(cpu, set->size, set->set))
        Py_RETURN_TRUE;
    Py_RETURN_FALSE;
}

PyDoc_STRVAR(cpu_set_zero_doc,
"cpu_set.zero()\n\n\
Clear the cpu_set.");

static PyObject *
cpu_set_zero(Py_cpu_set *set, PyObject *noargs)
{
    CPU_ZERO_S(set->size, set->set);
    Py_RETURN_NONE;
}

static PyObject *
cpu_set_richcompare(Py_cpu_set *set, Py_cpu_set *other, int op)
{
    int eq;

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    if ((op != Py_EQ && op != Py_NE) || Py_TYPE(other) != &cpu_set_type)
        Py_RETURN_NOTIMPLEMENTED;

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    eq = set->ncpus == other->ncpus && CPU_EQUAL_S(set->size, set->set, other->set);
    if ((op == Py_EQ) ? eq : !eq)
        Py_RETURN_TRUE;
    else
        Py_RETURN_FALSE;
}

#define CPU_SET_BINOP(name, op) \
    static PyObject * \
    do_cpu_set_##name(Py_cpu_set *left, Py_cpu_set *right, Py_cpu_set *res) { \
        if (res) { \
            Py_INCREF(res); \
        } \
        else { \
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            res = make_new_cpu_set(&cpu_set_type, left->ncpus); \
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            if (!res) \
                return NULL; \
        } \
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        if (Py_TYPE(right) != &cpu_set_type || left->ncpus != right->ncpus) { \
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            Py_DECREF(res); \
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            Py_RETURN_NOTIMPLEMENTED; \
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        } \
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        assert(left->size == right->size && right->size == res->size); \
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        op(res->size, res->set, left->set, right->set); \
        return (PyObject *)res; \
    } \
    static PyObject * \
    cpu_set_##name(Py_cpu_set *left, Py_cpu_set *right) { \
        return do_cpu_set_##name(left, right, NULL); \
    } \
    static PyObject * \
    cpu_set_i##name(Py_cpu_set *left, Py_cpu_set *right) { \
        return do_cpu_set_##name(left, right, left); \
    } \

CPU_SET_BINOP(and, CPU_AND_S)
CPU_SET_BINOP(or, CPU_OR_S)
CPU_SET_BINOP(xor, CPU_XOR_S)
#undef CPU_SET_BINOP

PyDoc_STRVAR(cpu_set_doc,
"cpu_set(size)\n\n\
Create an empty mask of CPUs.");

static PyNumberMethods cpu_set_as_number = {
    0,                                  /*nb_add*/
    0,                                  /*nb_subtract*/
    0,                                  /*nb_multiply*/
    0,                                  /*nb_remainder*/
    0,                                  /*nb_divmod*/
    0,                                  /*nb_power*/
    0,                                  /*nb_negative*/
    0,                                  /*nb_positive*/
    0,                                  /*nb_absolute*/
    0,                                  /*nb_bool*/
    0,                                  /*nb_invert*/
    0,                                  /*nb_lshift*/
    0,                                  /*nb_rshift*/
    (binaryfunc)cpu_set_and,            /*nb_and*/
    (binaryfunc)cpu_set_xor,            /*nb_xor*/
    (binaryfunc)cpu_set_or,             /*nb_or*/
    0,                                  /*nb_int*/
    0,                                  /*nb_reserved*/
    0,                                  /*nb_float*/
    0,                                  /*nb_inplace_add*/
    0,                                  /*nb_inplace_subtract*/
    0,                                  /*nb_inplace_multiply*/
    0,                                  /*nb_inplace_remainder*/
    0,                                  /*nb_inplace_power*/
    0,                                  /*nb_inplace_lshift*/
    0,                                  /*nb_inplace_rshift*/
    (binaryfunc)cpu_set_iand,           /*nb_inplace_and*/
    (binaryfunc)cpu_set_ixor,           /*nb_inplace_xor*/
    (binaryfunc)cpu_set_ior,            /*nb_inplace_or*/
};

static PySequenceMethods cpu_set_as_sequence = {
    (lenfunc)cpu_set_len,                            /* sq_length */
};

static PyMethodDef cpu_set_methods[] = {
    {"clear", (PyCFunction)cpu_set_clear, METH_VARARGS, cpu_set_clear_doc},
    {"count", (PyCFunction)cpu_set_count, METH_NOARGS, cpu_set_count_doc},
    {"isset", (PyCFunction)cpu_set_isset, METH_VARARGS, cpu_set_isset_doc},
    {"set", (PyCFunction)cpu_set_set, METH_VARARGS, cpu_set_set_doc},
    {"zero", (PyCFunction)cpu_set_zero, METH_NOARGS, cpu_set_zero_doc},
    {NULL, NULL}   /* sentinel */
};

static PyTypeObject cpu_set_type = {
    PyVarObject_HEAD_INIT(&PyType_Type, 0)
    "posix.cpu_set",                    /* tp_name */
    sizeof(Py_cpu_set),                 /* tp_basicsize */
    0,                                  /* tp_itemsize */
    /* methods */
    (destructor)cpu_set_dealloc,        /* tp_dealloc */
    0,                                  /* tp_print */
    0,                                  /* tp_getattr */
    0,                                  /* tp_setattr */
    0,                                  /* tp_reserved */
    (reprfunc)cpu_set_repr,             /* tp_repr */
    &cpu_set_as_number,                 /* tp_as_number */
    &cpu_set_as_sequence,               /* tp_as_sequence */
    0,                                  /* tp_as_mapping */
    PyObject_HashNotImplemented,        /* tp_hash */
    0,                                  /* tp_call */
    0,                                  /* tp_str */
    PyObject_GenericGetAttr,            /* tp_getattro */
    0,                                  /* tp_setattro */
    0,                                  /* tp_as_buffer */
    Py_TPFLAGS_DEFAULT,                 /* tp_flags */
    cpu_set_doc,                        /* tp_doc */
    0,                                  /* tp_traverse */
    0,                                  /* tp_clear */
    (richcmpfunc)cpu_set_richcompare,   /* tp_richcompare */
    0,                                  /* tp_weaklistoffset */
    0,                                  /* tp_iter */
    0,                                  /* tp_iternext */
    cpu_set_methods,                    /* tp_methods */
    0,                                  /* tp_members */
    0,                                  /* tp_getset */
    0,                                  /* tp_base */
    0,                                  /* tp_dict */
    0,                                  /* tp_descr_get */
    0,                                  /* tp_descr_set */
    0,                                  /* tp_dictoffset */
    0,                                  /* tp_init */
    PyType_GenericAlloc,                /* tp_alloc */
    cpu_set_new,                        /* tp_new */
    PyObject_Del,                       /* tp_free */
};

PyDoc_STRVAR(posix_sched_setaffinity__doc__,
"sched_setaffinity(pid, cpu_set)\n\n\
Set the affinity of the process with PID *pid* to *cpu_set*.");

static PyObject *
posix_sched_setaffinity(PyObject *self, PyObject *args)
{
    pid_t pid;
    Py_cpu_set *cpu_set;

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typo  
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    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "O!:sched_setaffinity",
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                          &pid, &cpu_set_type, &cpu_set))
        return NULL;
    if (sched_setaffinity(pid, cpu_set->size, cpu_set->set))
        return posix_error();
    Py_RETURN_NONE;
}

PyDoc_STRVAR(posix_sched_getaffinity__doc__,
"sched_getaffinity(pid, ncpus) -> cpu_set\n\n\
Return the affinity of the process with PID *pid*.\n\
The returned cpu_set will be of size *ncpus*.");

static PyObject *
posix_sched_getaffinity(PyObject *self, PyObject *args)
{
    pid_t pid;
    int ncpus;
    Py_cpu_set *res;

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    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:sched_getaffinity",
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                          &pid, &ncpus))
        return NULL;
    res = make_new_cpu_set(&cpu_set_type, ncpus);
    if (!res)
        return NULL;
    if (sched_getaffinity(pid, res->size, res->set)) {
        Py_DECREF(res);
        return posix_error();
    }
    return (PyObject *)res;
}

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#endif /* HAVE_SCHED_SETAFFINITY */

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#endif /* HAVE_SCHED_H */

5249
/* AIX uses /dev/ptc but is otherwise the same as /dev/ptmx */
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/* IRIX has both /dev/ptc and /dev/ptmx, use ptmx */
#if defined(HAVE_DEV_PTC) && !defined(HAVE_DEV_PTMX)
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#define DEV_PTY_FILE "/dev/ptc"
#define HAVE_DEV_PTMX
#else
#define DEV_PTY_FILE "/dev/ptmx"
#endif

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#if defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) || defined(HAVE_DEV_PTMX)
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#ifdef HAVE_PTY_H
#include <pty.h>
#else
#ifdef HAVE_LIBUTIL_H
#include <libutil.h>
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#else
#ifdef HAVE_UTIL_H
#include <util.h>
#endif /* HAVE_UTIL_H */
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#endif /* HAVE_LIBUTIL_H */
#endif /* HAVE_PTY_H */
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#ifdef HAVE_STROPTS_H
#include <stropts.h>
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#endif
#endif /* defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) || defined(HAVE_DEV_PTMX */
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#if defined(HAVE_OPENPTY) || defined(HAVE__GETPTY) || defined(HAVE_DEV_PTMX)
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PyDoc_STRVAR(posix_openpty__doc__,
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"openpty() -> (master_fd, slave_fd)\n\n\
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Open a pseudo-terminal, returning open fd's for both master and slave end.\n");
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static PyObject *
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posix_openpty(PyObject *self, PyObject *noargs)
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{
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    int master_fd, slave_fd;
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#ifndef HAVE_OPENPTY
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    char * slave_name;
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#endif
#if defined(HAVE_DEV_PTMX) && !defined(HAVE_OPENPTY) && !defined(HAVE__GETPTY)
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    PyOS_sighandler_t sig_saved;
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#ifdef sun
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    extern char *ptsname(int fildes);
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#endif
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#endif

#ifdef HAVE_OPENPTY
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    if (openpty(&master_fd, &slave_fd, NULL, NULL, NULL) != 0)
        return posix_error();
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#elif defined(HAVE__GETPTY)
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    slave_name = _getpty(&master_fd, O_RDWR, 0666, 0);
    if (slave_name == NULL)
        return posix_error();
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    slave_fd = open(slave_name, O_RDWR);
    if (slave_fd < 0)
        return posix_error();
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#else
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    master_fd = open(DEV_PTY_FILE, O_RDWR | O_NOCTTY); /* open master */
    if (master_fd < 0)
        return posix_error();
    sig_saved = PyOS_setsig(SIGCHLD, SIG_DFL);
    /* change permission of slave */
    if (grantpt(master_fd) < 0) {
        PyOS_setsig(SIGCHLD, sig_saved);
        return posix_error();
    }
    /* unlock slave */
    if (unlockpt(master_fd) < 0) {
        PyOS_setsig(SIGCHLD, sig_saved);
        return posix_error();
    }
    PyOS_setsig(SIGCHLD, sig_saved);
    slave_name = ptsname(master_fd); /* get name of slave */
    if (slave_name == NULL)
        return posix_error();
    slave_fd = open(slave_name, O_RDWR | O_NOCTTY); /* open slave */
    if (slave_fd < 0)
        return posix_error();
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#if !defined(__CYGWIN__) && !defined(HAVE_DEV_PTC)
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    ioctl(slave_fd, I_PUSH, "ptem"); /* push ptem */
    ioctl(slave_fd, I_PUSH, "ldterm"); /* push ldterm */
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#ifndef __hpux
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    ioctl(slave_fd, I_PUSH, "ttcompat"); /* push ttcompat */
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#endif /* __hpux */
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#endif /* HAVE_CYGWIN */
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#endif /* HAVE_OPENPTY */
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    return Py_BuildValue("(ii)", master_fd, slave_fd);
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}
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#endif /* defined(HAVE_OPENPTY) || defined(HAVE__GETPTY) || defined(HAVE_DEV_PTMX) */
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#ifdef HAVE_FORKPTY
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PyDoc_STRVAR(posix_forkpty__doc__,
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"forkpty() -> (pid, master_fd)\n\n\
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Fork a new process with a new pseudo-terminal as controlling tty.\n\n\
Like fork(), return 0 as pid to child process, and PID of child to parent.\n\
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To both, return fd of newly opened pseudo-terminal.\n");
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static PyObject *
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posix_forkpty(PyObject *self, PyObject *noargs)
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{
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    int master_fd = -1, result = 0;
    pid_t pid;

    _PyImport_AcquireLock();
    pid = forkpty(&master_fd, NULL, NULL, NULL);
    if (pid == 0) {
        /* child: this clobbers and resets the import lock. */
        PyOS_AfterFork();
    } else {
        /* parent: release the import lock. */
        result = _PyImport_ReleaseLock();
    }
    if (pid == -1)
        return posix_error();
    if (result < 0) {
        /* Don't clobber the OSError if the fork failed. */
        PyErr_SetString(PyExc_RuntimeError,
                        "not holding the import lock");
        return NULL;
    }
    return Py_BuildValue("(Ni)", PyLong_FromPid(pid), master_fd);
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}
#endif
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5375

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#ifdef HAVE_GETEGID
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PyDoc_STRVAR(posix_getegid__doc__,
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"getegid() -> egid\n\n\
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Return the current process's effective group id.");
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static PyObject *
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posix_getegid(PyObject *self, PyObject *noargs)
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{
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    return PyLong_FromLong((long)getegid());
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}
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#endif
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#ifdef HAVE_GETEUID
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PyDoc_STRVAR(posix_geteuid__doc__,
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"geteuid() -> euid\n\n\
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Return the current process's effective user id.");
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static PyObject *
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posix_geteuid(PyObject *self, PyObject *noargs)
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{
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    return PyLong_FromLong((long)geteuid());
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}
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#endif
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#ifdef HAVE_GETGID
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PyDoc_STRVAR(posix_getgid__doc__,
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"getgid() -> gid\n\n\
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Return the current process's group id.");
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static PyObject *
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posix_getgid(PyObject *self, PyObject *noargs)
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{
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    return PyLong_FromLong((long)getgid());
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}
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#endif
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PyDoc_STRVAR(posix_getpid__doc__,
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"getpid() -> pid\n\n\
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Return the current process id");
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static PyObject *
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posix_getpid(PyObject *self, PyObject *noargs)
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{
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    return PyLong_FromPid(getpid());
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}

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#ifdef HAVE_GETGROUPLIST
PyDoc_STRVAR(posix_getgrouplist__doc__,
"getgrouplist(user, group) -> list of groups to which a user belongs\n\n\
Returns a list of groups to which a user belongs.\n\n\
    user: username to lookup\n\
    group: base group id of the user");

static PyObject *
posix_getgrouplist(PyObject *self, PyObject *args)
{
#ifdef NGROUPS_MAX
#define MAX_GROUPS NGROUPS_MAX
#else
    /* defined to be 16 on Solaris7, so this should be a small number */
#define MAX_GROUPS 64
#endif

    const char *user;
    int i, ngroups;
    PyObject *list;
#ifdef __APPLE__
    int *groups, basegid;
#else
    gid_t *groups, basegid;
#endif
    ngroups = MAX_GROUPS;

    if (!PyArg_ParseTuple(args, "si", &user, &basegid))
        return NULL;

#ifdef __APPLE__
    groups = PyMem_Malloc(ngroups * sizeof(int));
#else
    groups = PyMem_Malloc(ngroups * sizeof(gid_t));
#endif
    if (groups == NULL)
        return PyErr_NoMemory();

    if (getgrouplist(user, basegid, groups, &ngroups) == -1) {
        PyMem_Del(groups);
        return posix_error();
    }

    list = PyList_New(ngroups);
    if (list == NULL) {
        PyMem_Del(groups);
        return NULL;
    }

    for (i = 0; i < ngroups; i++) {
        PyObject *o = PyLong_FromUnsignedLong((unsigned long)groups[i]);
        if (o == NULL) {
            Py_DECREF(list);
            PyMem_Del(groups);
            return NULL;
        }
        PyList_SET_ITEM(list, i, o);
    }

    PyMem_Del(groups);

    return list;
}
#endif
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#ifdef HAVE_GETGROUPS
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PyDoc_STRVAR(posix_getgroups__doc__,
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"getgroups() -> list of group IDs\n\n\
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Return list of supplemental group IDs for the process.");
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static PyObject *
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posix_getgroups(PyObject *self, PyObject *noargs)
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{
    PyObject *result = NULL;

#ifdef NGROUPS_MAX
#define MAX_GROUPS NGROUPS_MAX
#else
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    /* defined to be 16 on Solaris7, so this should be a small number */
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#define MAX_GROUPS 64
#endif
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    gid_t grouplist[MAX_GROUPS];
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5508
    /* On MacOSX getgroups(2) can return more than MAX_GROUPS results
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     * This is a helper variable to store the intermediate result when
     * that happens.
     *
     * To keep the code readable the OSX behaviour is unconditional,
     * according to the POSIX spec this should be safe on all unix-y
     * systems.
     */
    gid_t* alt_grouplist = grouplist;
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    int n;
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    n = getgroups(MAX_GROUPS, grouplist);
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    if (n < 0) {
        if (errno == EINVAL) {
            n = getgroups(0, NULL);
            if (n == -1) {
                return posix_error();
            }
            if (n == 0) {
                /* Avoid malloc(0) */
                alt_grouplist = grouplist;
            } else {
                alt_grouplist = PyMem_Malloc(n * sizeof(gid_t));
                if (alt_grouplist == NULL) {
                    errno = EINVAL;
                    return posix_error();
                }
                n = getgroups(n, alt_grouplist);
                if (n == -1) {
                    PyMem_Free(alt_grouplist);
                    return posix_error();
                }
            }
        } else {
            return posix_error();
        }
    }
    result = PyList_New(n);
    if (result != NULL) {
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        int i;
        for (i = 0; i < n; ++i) {
5549
            PyObject *o = PyLong_FromLong((long)alt_grouplist[i]);
5550
            if (o == NULL) {
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                Py_DECREF(result);
                result = NULL;
                break;
5554
            }
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            PyList_SET_ITEM(result, i, o);
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        }
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    }

    if (alt_grouplist != grouplist) {
        PyMem_Free(alt_grouplist);
5561
    }
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    return result;
}
#endif

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#ifdef HAVE_INITGROUPS
PyDoc_STRVAR(posix_initgroups__doc__,
"initgroups(username, gid) -> None\n\n\
Call the system initgroups() to initialize the group access list with all of\n\
the groups of which the specified username is a member, plus the specified\n\
group id.");

static PyObject *
posix_initgroups(PyObject *self, PyObject *args)
{
5577
    PyObject *oname;
5578
    char *username;
5579
    int res;
5580
    long gid;
5581

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    if (!PyArg_ParseTuple(args, "O&l:initgroups",
                          PyUnicode_FSConverter, &oname, &gid))
5584
        return NULL;
5585
    username = PyBytes_AS_STRING(oname);
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    res = initgroups(username, (gid_t) gid);
    Py_DECREF(oname);
    if (res == -1)
5590
        return PyErr_SetFromErrno(PyExc_OSError);
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    Py_INCREF(Py_None);
    return Py_None;
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}
#endif

5597
#ifdef HAVE_GETPGID
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5598
PyDoc_STRVAR(posix_getpgid__doc__,
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Fred Drake committed
5599
"getpgid(pid) -> pgid\n\n\
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Call the system call getpgid().");
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static PyObject *
posix_getpgid(PyObject *self, PyObject *args)
{
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    pid_t pid, pgid;
    if (!PyArg_ParseTuple(args, _Py_PARSE_PID ":getpgid", &pid))
        return NULL;
    pgid = getpgid(pid);
    if (pgid < 0)
        return posix_error();
    return PyLong_FromPid(pgid);
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}
#endif /* HAVE_GETPGID */


5616
#ifdef HAVE_GETPGRP
5617
PyDoc_STRVAR(posix_getpgrp__doc__,
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Fred Drake committed
5618
"getpgrp() -> pgrp\n\n\
5619
Return the current process group id.");
5620

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5621
static PyObject *
5622
posix_getpgrp(PyObject *self, PyObject *noargs)
5623
{
5624
#ifdef GETPGRP_HAVE_ARG
5625
    return PyLong_FromPid(getpgrp(0));
5626
#else /* GETPGRP_HAVE_ARG */
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    return PyLong_FromPid(getpgrp());
5628
#endif /* GETPGRP_HAVE_ARG */
5629
}
5630
#endif /* HAVE_GETPGRP */
5631

5632

5633
#ifdef HAVE_SETPGRP
5634
PyDoc_STRVAR(posix_setpgrp__doc__,
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Fred Drake committed
5635
"setpgrp()\n\n\
5636
Make this process the process group leader.");
5637

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5638
static PyObject *
5639
posix_setpgrp(PyObject *self, PyObject *noargs)
5640
{
5641
#ifdef SETPGRP_HAVE_ARG
5642
    if (setpgrp(0, 0) < 0)
5643
#else /* SETPGRP_HAVE_ARG */
5644
    if (setpgrp() < 0)
5645
#endif /* SETPGRP_HAVE_ARG */
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        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
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}

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#endif /* HAVE_SETPGRP */

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5653
#ifdef HAVE_GETPPID
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#ifdef MS_WINDOWS
#include <tlhelp32.h>

static PyObject*
win32_getppid()
{
    HANDLE snapshot;
    pid_t mypid;
    PyObject* result = NULL;
    BOOL have_record;
    PROCESSENTRY32 pe;

    mypid = getpid(); /* This function never fails */

    snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (snapshot == INVALID_HANDLE_VALUE)
        return PyErr_SetFromWindowsErr(GetLastError());

    pe.dwSize = sizeof(pe);
    have_record = Process32First(snapshot, &pe);
    while (have_record) {
        if (mypid == (pid_t)pe.th32ProcessID) {
            /* We could cache the ulong value in a static variable. */
            result = PyLong_FromPid((pid_t)pe.th32ParentProcessID);
            break;
        }

        have_record = Process32Next(snapshot, &pe);
    }

    /* If our loop exits and our pid was not found (result will be NULL)
     * then GetLastError will return ERROR_NO_MORE_FILES. This is an
     * error anyway, so let's raise it. */
    if (!result)
        result = PyErr_SetFromWindowsErr(GetLastError());

    CloseHandle(snapshot);

    return result;
}
#endif /*MS_WINDOWS*/

5697
PyDoc_STRVAR(posix_getppid__doc__,
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Fred Drake committed
5698
"getppid() -> ppid\n\n\
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Return the parent's process id.  If the parent process has already exited,\n\
Windows machines will still return its id; others systems will return the id\n\
of the 'init' process (1).");
5702

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Barry Warsaw committed
5703
static PyObject *
5704
posix_getppid(PyObject *self, PyObject *noargs)
5705
{
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#ifdef MS_WINDOWS
    return win32_getppid();
#else
5709
    return PyLong_FromPid(getppid());
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5710
#endif
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}
#endif /* HAVE_GETPPID */
5713

5714

5715
#ifdef HAVE_GETLOGIN
5716
PyDoc_STRVAR(posix_getlogin__doc__,
Fred Drake's avatar
Fred Drake committed
5717
"getlogin() -> string\n\n\
5718
Return the actual login name.");
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static PyObject *
5721
posix_getlogin(PyObject *self, PyObject *noargs)
5722
{
5723
    PyObject *result = NULL;
5724
#ifdef MS_WINDOWS
5725
    wchar_t user_name[UNLEN + 1];
5726
    DWORD num_chars = Py_ARRAY_LENGTH(user_name);
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    if (GetUserNameW(user_name, &num_chars)) {
        /* num_chars is the number of unicode chars plus null terminator */
        result = PyUnicode_FromWideChar(user_name, num_chars - 1);
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    }
    else
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        result = PyErr_SetFromWindowsErr(GetLastError());
#else
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    char *name;
    int old_errno = errno;
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    errno = 0;
    name = getlogin();
    if (name == NULL) {
        if (errno)
5742
            posix_error();
5743
        else
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            PyErr_SetString(PyExc_OSError, "unable to determine login name");
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    }
    else
5747
        result = PyUnicode_DecodeFSDefault(name);
5748
    errno = old_errno;
5749
#endif
5750 5751
    return result;
}
5752
#endif /* HAVE_GETLOGIN */
5753

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Guido van Rossum committed
5754
#ifdef HAVE_GETUID
5755
PyDoc_STRVAR(posix_getuid__doc__,
Fred Drake's avatar
Fred Drake committed
5756
"getuid() -> uid\n\n\
5757
Return the current process's user id.");
5758

Barry Warsaw's avatar
Barry Warsaw committed
5759
static PyObject *
5760
posix_getuid(PyObject *self, PyObject *noargs)
5761
{
5762
    return PyLong_FromLong((long)getuid());
5763
}
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5764
#endif
5765

5766

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5767
#ifdef HAVE_KILL
5768
PyDoc_STRVAR(posix_kill__doc__,
Fred Drake's avatar
Fred Drake committed
5769
"kill(pid, sig)\n\n\
5770
Kill a process with a signal.");
5771

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Barry Warsaw committed
5772
static PyObject *
5773
posix_kill(PyObject *self, PyObject *args)
5774
{
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    pid_t pid;
    int sig;
    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:kill", &pid, &sig))
        return NULL;
5779
#if defined(PYOS_OS2) && !defined(PYCC_GCC)
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    if (sig == XCPT_SIGNAL_INTR || sig == XCPT_SIGNAL_BREAK) {
        APIRET rc;
        if ((rc = DosSendSignalException(pid, sig)) != NO_ERROR)
5783
            return os2_error(rc);
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Guido van Rossum committed
5784 5785 5786 5787

    } else if (sig == XCPT_SIGNAL_KILLPROC) {
        APIRET rc;
        if ((rc = DosKillProcess(DKP_PROCESS, pid)) != NO_ERROR)
5788
            return os2_error(rc);
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Guido van Rossum committed
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    } else
5791
        return NULL; /* Unrecognized Signal Requested */
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5792
#else
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    if (kill(pid, sig) == -1)
        return posix_error();
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5795
#endif
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    Py_INCREF(Py_None);
    return Py_None;
5798
}
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5799
#endif
5800

5801
#ifdef HAVE_KILLPG
5802
PyDoc_STRVAR(posix_killpg__doc__,
Fred Drake's avatar
Fred Drake committed
5803
"killpg(pgid, sig)\n\n\
5804
Kill a process group with a signal.");
5805 5806 5807 5808

static PyObject *
posix_killpg(PyObject *self, PyObject *args)
{
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    int sig;
    pid_t pgid;
    /* XXX some man pages make the `pgid` parameter an int, others
       a pid_t. Since getpgrp() returns a pid_t, we assume killpg should
       take the same type. Moreover, pid_t is always at least as wide as
       int (else compilation of this module fails), which is safe. */
    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:killpg", &pgid, &sig))
        return NULL;
    if (killpg(pgid, sig) == -1)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
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}
#endif

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#ifdef MS_WINDOWS
PyDoc_STRVAR(win32_kill__doc__,
"kill(pid, sig)\n\n\
Kill a process with a signal.");

static PyObject *
win32_kill(PyObject *self, PyObject *args)
{
5832
    PyObject *result;
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    DWORD pid, sig, err;
    HANDLE handle;

    if (!PyArg_ParseTuple(args, "kk:kill", &pid, &sig))
        return NULL;

    /* Console processes which share a common console can be sent CTRL+C or
       CTRL+BREAK events, provided they handle said events. */
    if (sig == CTRL_C_EVENT || sig == CTRL_BREAK_EVENT) {
        if (GenerateConsoleCtrlEvent(sig, pid) == 0) {
            err = GetLastError();
            PyErr_SetFromWindowsErr(err);
        }
        else
            Py_RETURN_NONE;
    }

    /* If the signal is outside of what GenerateConsoleCtrlEvent can use,
       attempt to open and terminate the process. */
    handle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
    if (handle == NULL) {
        err = GetLastError();
        return PyErr_SetFromWindowsErr(err);
    }

    if (TerminateProcess(handle, sig) == 0) {
        err = GetLastError();
        result = PyErr_SetFromWindowsErr(err);
    } else {
        Py_INCREF(Py_None);
        result = Py_None;
    }

    CloseHandle(handle);
    return result;
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}
#endif /* MS_WINDOWS */

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#ifdef HAVE_PLOCK

#ifdef HAVE_SYS_LOCK_H
#include <sys/lock.h>
#endif

5877
PyDoc_STRVAR(posix_plock__doc__,
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Fred Drake committed
5878
"plock(op)\n\n\
5879
Lock program segments into memory.");
5880

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Barry Warsaw committed
5881
static PyObject *
5882
posix_plock(PyObject *self, PyObject *args)
5883
{
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    int op;
    if (!PyArg_ParseTuple(args, "i:plock", &op))
        return NULL;
    if (plock(op) == -1)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
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}
#endif

5894
#ifdef HAVE_SETUID
5895
PyDoc_STRVAR(posix_setuid__doc__,
Fred Drake's avatar
Fred Drake committed
5896
"setuid(uid)\n\n\
5897 5898
Set the current process's user id.");

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5899
static PyObject *
5900
posix_setuid(PyObject *self, PyObject *args)
5901
{
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    long uid_arg;
    uid_t uid;
    if (!PyArg_ParseTuple(args, "l:setuid", &uid_arg))
        return NULL;
    uid = uid_arg;
    if (uid != uid_arg) {
        PyErr_SetString(PyExc_OverflowError, "user id too big");
        return NULL;
    }
    if (setuid(uid) < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
5915
}
5916
#endif /* HAVE_SETUID */
5917

5918

5919
#ifdef HAVE_SETEUID
5920
PyDoc_STRVAR(posix_seteuid__doc__,
Fred Drake's avatar
Fred Drake committed
5921
"seteuid(uid)\n\n\
5922 5923
Set the current process's effective user id.");

5924 5925 5926
static PyObject *
posix_seteuid (PyObject *self, PyObject *args)
{
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    long euid_arg;
    uid_t euid;
    if (!PyArg_ParseTuple(args, "l", &euid_arg))
        return NULL;
    euid = euid_arg;
    if (euid != euid_arg) {
        PyErr_SetString(PyExc_OverflowError, "user id too big");
        return NULL;
    }
    if (seteuid(euid) < 0) {
        return posix_error();
    } else {
        Py_INCREF(Py_None);
        return Py_None;
    }
5942 5943 5944 5945
}
#endif /* HAVE_SETEUID */

#ifdef HAVE_SETEGID
5946
PyDoc_STRVAR(posix_setegid__doc__,
Fred Drake's avatar
Fred Drake committed
5947
"setegid(gid)\n\n\
5948 5949
Set the current process's effective group id.");

5950 5951 5952
static PyObject *
posix_setegid (PyObject *self, PyObject *args)
{
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    long egid_arg;
    gid_t egid;
    if (!PyArg_ParseTuple(args, "l", &egid_arg))
        return NULL;
    egid = egid_arg;
    if (egid != egid_arg) {
        PyErr_SetString(PyExc_OverflowError, "group id too big");
        return NULL;
    }
    if (setegid(egid) < 0) {
        return posix_error();
    } else {
        Py_INCREF(Py_None);
        return Py_None;
    }
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}
#endif /* HAVE_SETEGID */

#ifdef HAVE_SETREUID
5972
PyDoc_STRVAR(posix_setreuid__doc__,
5973
"setreuid(ruid, euid)\n\n\
5974 5975
Set the current process's real and effective user ids.");

5976 5977 5978
static PyObject *
posix_setreuid (PyObject *self, PyObject *args)
{
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    long ruid_arg, euid_arg;
    uid_t ruid, euid;
    if (!PyArg_ParseTuple(args, "ll", &ruid_arg, &euid_arg))
        return NULL;
    if (ruid_arg == -1)
        ruid = (uid_t)-1;  /* let the compiler choose how -1 fits */
    else
        ruid = ruid_arg;  /* otherwise, assign from our long */
    if (euid_arg == -1)
        euid = (uid_t)-1;
    else
        euid = euid_arg;
    if ((euid_arg != -1 && euid != euid_arg) ||
        (ruid_arg != -1 && ruid != ruid_arg)) {
        PyErr_SetString(PyExc_OverflowError, "user id too big");
        return NULL;
    }
    if (setreuid(ruid, euid) < 0) {
        return posix_error();
    } else {
        Py_INCREF(Py_None);
        return Py_None;
    }
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}
#endif /* HAVE_SETREUID */

#ifdef HAVE_SETREGID
6006
PyDoc_STRVAR(posix_setregid__doc__,
6007
"setregid(rgid, egid)\n\n\
6008 6009
Set the current process's real and effective group ids.");

6010 6011 6012
static PyObject *
posix_setregid (PyObject *self, PyObject *args)
{
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    long rgid_arg, egid_arg;
    gid_t rgid, egid;
    if (!PyArg_ParseTuple(args, "ll", &rgid_arg, &egid_arg))
        return NULL;
    if (rgid_arg == -1)
        rgid = (gid_t)-1;  /* let the compiler choose how -1 fits */
    else
        rgid = rgid_arg;  /* otherwise, assign from our long */
    if (egid_arg == -1)
        egid = (gid_t)-1;
    else
        egid = egid_arg;
    if ((egid_arg != -1 && egid != egid_arg) ||
        (rgid_arg != -1 && rgid != rgid_arg)) {
        PyErr_SetString(PyExc_OverflowError, "group id too big");
        return NULL;
    }
    if (setregid(rgid, egid) < 0) {
        return posix_error();
    } else {
        Py_INCREF(Py_None);
        return Py_None;
    }
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}
#endif /* HAVE_SETREGID */

6039
#ifdef HAVE_SETGID
6040
PyDoc_STRVAR(posix_setgid__doc__,
Fred Drake's avatar
Fred Drake committed
6041
"setgid(gid)\n\n\
6042
Set the current process's group id.");
6043

Barry Warsaw's avatar
Barry Warsaw committed
6044
static PyObject *
6045
posix_setgid(PyObject *self, PyObject *args)
6046
{
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    long gid_arg;
    gid_t gid;
    if (!PyArg_ParseTuple(args, "l:setgid", &gid_arg))
        return NULL;
    gid = gid_arg;
    if (gid != gid_arg) {
        PyErr_SetString(PyExc_OverflowError, "group id too big");
        return NULL;
    }
    if (setgid(gid) < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
6060
}
6061
#endif /* HAVE_SETGID */
6062

6063
#ifdef HAVE_SETGROUPS
6064
PyDoc_STRVAR(posix_setgroups__doc__,
Fred Drake's avatar
Fred Drake committed
6065
"setgroups(list)\n\n\
6066
Set the groups of the current process to list.");
6067 6068

static PyObject *
6069
posix_setgroups(PyObject *self, PyObject *groups)
6070
{
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    int i, len;
    gid_t grouplist[MAX_GROUPS];

    if (!PySequence_Check(groups)) {
        PyErr_SetString(PyExc_TypeError, "setgroups argument must be a sequence");
        return NULL;
    }
    len = PySequence_Size(groups);
    if (len > MAX_GROUPS) {
        PyErr_SetString(PyExc_ValueError, "too many groups");
        return NULL;
    }
    for(i = 0; i < len; i++) {
        PyObject *elem;
        elem = PySequence_GetItem(groups, i);
        if (!elem)
            return NULL;
        if (!PyLong_Check(elem)) {
            PyErr_SetString(PyExc_TypeError,
                            "groups must be integers");
            Py_DECREF(elem);
            return NULL;
        } else {
            unsigned long x = PyLong_AsUnsignedLong(elem);
            if (PyErr_Occurred()) {
                PyErr_SetString(PyExc_TypeError,
                                "group id too big");
                Py_DECREF(elem);
                return NULL;
            }
            grouplist[i] = x;
            /* read back the value to see if it fitted in gid_t */
            if (grouplist[i] != x) {
                PyErr_SetString(PyExc_TypeError,
                                "group id too big");
                Py_DECREF(elem);
                return NULL;
            }
        }
        Py_DECREF(elem);
    }

    if (setgroups(len, grouplist) < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
6117 6118
}
#endif /* HAVE_SETGROUPS */
6119

6120 6121
#if defined(HAVE_WAIT3) || defined(HAVE_WAIT4)
static PyObject *
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Christian Heimes committed
6122
wait_helper(pid_t pid, int status, struct rusage *ru)
6123
{
6124 6125
    PyObject *result;
    static PyObject *struct_rusage;
6126
    _Py_IDENTIFIER(struct_rusage);
6127

6128 6129
    if (pid == -1)
        return posix_error();
6130

6131 6132 6133 6134
    if (struct_rusage == NULL) {
        PyObject *m = PyImport_ImportModuleNoBlock("resource");
        if (m == NULL)
            return NULL;
6135
        struct_rusage = _PyObject_GetAttrId(m, &PyId_struct_rusage);
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        Py_DECREF(m);
        if (struct_rusage == NULL)
            return NULL;
    }
6140

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    /* XXX(nnorwitz): Copied (w/mods) from resource.c, there should be only one. */
    result = PyStructSequence_New((PyTypeObject*) struct_rusage);
    if (!result)
        return NULL;
6145 6146 6147 6148 6149

#ifndef doubletime
#define doubletime(TV) ((double)(TV).tv_sec + (TV).tv_usec * 0.000001)
#endif

6150 6151 6152 6153
    PyStructSequence_SET_ITEM(result, 0,
                              PyFloat_FromDouble(doubletime(ru->ru_utime)));
    PyStructSequence_SET_ITEM(result, 1,
                              PyFloat_FromDouble(doubletime(ru->ru_stime)));
6154
#define SET_INT(result, index, value)\
6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169
        PyStructSequence_SET_ITEM(result, index, PyLong_FromLong(value))
    SET_INT(result, 2, ru->ru_maxrss);
    SET_INT(result, 3, ru->ru_ixrss);
    SET_INT(result, 4, ru->ru_idrss);
    SET_INT(result, 5, ru->ru_isrss);
    SET_INT(result, 6, ru->ru_minflt);
    SET_INT(result, 7, ru->ru_majflt);
    SET_INT(result, 8, ru->ru_nswap);
    SET_INT(result, 9, ru->ru_inblock);
    SET_INT(result, 10, ru->ru_oublock);
    SET_INT(result, 11, ru->ru_msgsnd);
    SET_INT(result, 12, ru->ru_msgrcv);
    SET_INT(result, 13, ru->ru_nsignals);
    SET_INT(result, 14, ru->ru_nvcsw);
    SET_INT(result, 15, ru->ru_nivcsw);
6170 6171
#undef SET_INT

6172 6173 6174 6175
    if (PyErr_Occurred()) {
        Py_DECREF(result);
        return NULL;
    }
6176

6177
    return Py_BuildValue("NiN", PyLong_FromPid(pid), status, result);
6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188
}
#endif /* HAVE_WAIT3 || HAVE_WAIT4 */

#ifdef HAVE_WAIT3
PyDoc_STRVAR(posix_wait3__doc__,
"wait3(options) -> (pid, status, rusage)\n\n\
Wait for completion of a child process.");

static PyObject *
posix_wait3(PyObject *self, PyObject *args)
{
6189 6190 6191 6192 6193
    pid_t pid;
    int options;
    struct rusage ru;
    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
6194

6195 6196
    if (!PyArg_ParseTuple(args, "i:wait3", &options))
        return NULL;
6197

6198 6199 6200
    Py_BEGIN_ALLOW_THREADS
    pid = wait3(&status, options, &ru);
    Py_END_ALLOW_THREADS
6201

6202
    return wait_helper(pid, WAIT_STATUS_INT(status), &ru);
6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213
}
#endif /* HAVE_WAIT3 */

#ifdef HAVE_WAIT4
PyDoc_STRVAR(posix_wait4__doc__,
"wait4(pid, options) -> (pid, status, rusage)\n\n\
Wait for completion of a given child process.");

static PyObject *
posix_wait4(PyObject *self, PyObject *args)
{
6214 6215 6216 6217 6218
    pid_t pid;
    int options;
    struct rusage ru;
    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
6219

6220 6221
    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:wait4", &pid, &options))
        return NULL;
6222

6223 6224 6225
    Py_BEGIN_ALLOW_THREADS
    pid = wait4(pid, &status, options, &ru);
    Py_END_ALLOW_THREADS
6226

6227
    return wait_helper(pid, WAIT_STATUS_INT(status), &ru);
6228 6229 6230
}
#endif /* HAVE_WAIT4 */

6231 6232 6233 6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251 6252 6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272 6273 6274 6275 6276 6277 6278 6279
#if defined(HAVE_WAITID) && !defined(__APPLE__)
PyDoc_STRVAR(posix_waitid__doc__,
"waitid(idtype, id, options) -> waitid_result\n\n\
Wait for the completion of one or more child processes.\n\n\
idtype can be P_PID, P_PGID or P_ALL.\n\
id specifies the pid to wait on.\n\
options is constructed from the ORing of one or more of WEXITED, WSTOPPED\n\
or WCONTINUED and additionally may be ORed with WNOHANG or WNOWAIT.\n\
Returns either waitid_result or None if WNOHANG is specified and there are\n\
no children in a waitable state.");

static PyObject *
posix_waitid(PyObject *self, PyObject *args)
{
    PyObject *result;
    idtype_t idtype;
    id_t id;
    int options, res;
    siginfo_t si;
    si.si_pid = 0;
    if (!PyArg_ParseTuple(args, "i" _Py_PARSE_PID "i:waitid", &idtype, &id, &options))
        return NULL;
    Py_BEGIN_ALLOW_THREADS
    res = waitid(idtype, id, &si, options);
    Py_END_ALLOW_THREADS
    if (res == -1)
        return posix_error();

    if (si.si_pid == 0)
        Py_RETURN_NONE;

    result = PyStructSequence_New(&WaitidResultType);
    if (!result)
        return NULL;

    PyStructSequence_SET_ITEM(result, 0, PyLong_FromPid(si.si_pid));
    PyStructSequence_SET_ITEM(result, 1, PyLong_FromPid(si.si_uid));
    PyStructSequence_SET_ITEM(result, 2, PyLong_FromLong((long)(si.si_signo)));
    PyStructSequence_SET_ITEM(result, 3, PyLong_FromLong((long)(si.si_status)));
    PyStructSequence_SET_ITEM(result, 4, PyLong_FromLong((long)(si.si_code)));
    if (PyErr_Occurred()) {
        Py_DECREF(result);
        return NULL;
    }

    return result;
}
#endif

6280
#ifdef HAVE_WAITPID
6281
PyDoc_STRVAR(posix_waitpid__doc__,
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Fred Drake committed
6282
"waitpid(pid, options) -> (pid, status)\n\n\
6283
Wait for completion of a given child process.");
6284

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6285
static PyObject *
6286
posix_waitpid(PyObject *self, PyObject *args)
6287
{
6288 6289 6290 6291
    pid_t pid;
    int options;
    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
6292

6293 6294 6295 6296 6297 6298 6299
    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:waitpid", &pid, &options))
        return NULL;
    Py_BEGIN_ALLOW_THREADS
    pid = waitpid(pid, &status, options);
    Py_END_ALLOW_THREADS
    if (pid == -1)
        return posix_error();
6300

6301
    return Py_BuildValue("Ni", PyLong_FromPid(pid), WAIT_STATUS_INT(status));
6302 6303
}

6304 6305 6306
#elif defined(HAVE_CWAIT)

/* MS C has a variant of waitpid() that's usable for most purposes. */
6307
PyDoc_STRVAR(posix_waitpid__doc__,
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Fred Drake committed
6308
"waitpid(pid, options) -> (pid, status << 8)\n\n"
6309
"Wait for completion of a given process.  options is ignored on Windows.");
6310 6311 6312 6313

static PyObject *
posix_waitpid(PyObject *self, PyObject *args)
{
6314 6315
    Py_intptr_t pid;
    int status, options;
6316

6317 6318 6319 6320 6321 6322 6323
    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:waitpid", &pid, &options))
        return NULL;
    Py_BEGIN_ALLOW_THREADS
    pid = _cwait(&status, pid, options);
    Py_END_ALLOW_THREADS
    if (pid == -1)
        return posix_error();
6324

6325 6326
    /* shift the status left a byte so this is more like the POSIX waitpid */
    return Py_BuildValue("Ni", PyLong_FromPid(pid), status << 8);
6327 6328
}
#endif /* HAVE_WAITPID || HAVE_CWAIT */
6329

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Guido van Rossum committed
6330
#ifdef HAVE_WAIT
6331
PyDoc_STRVAR(posix_wait__doc__,
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Fred Drake committed
6332
"wait() -> (pid, status)\n\n\
6333
Wait for completion of a child process.");
6334

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6335
static PyObject *
6336
posix_wait(PyObject *self, PyObject *noargs)
6337
{
6338 6339 6340
    pid_t pid;
    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
6341

6342 6343 6344 6345 6346
    Py_BEGIN_ALLOW_THREADS
    pid = wait(&status);
    Py_END_ALLOW_THREADS
    if (pid == -1)
        return posix_error();
6347

6348
    return Py_BuildValue("Ni", PyLong_FromPid(pid), WAIT_STATUS_INT(status));
6349
}
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6350
#endif
6351

6352

6353
PyDoc_STRVAR(posix_lstat__doc__,
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Fred Drake committed
6354
"lstat(path) -> stat result\n\n\
6355
Like stat(path), but do not follow symbolic links.");
6356

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6357
static PyObject *
6358
posix_lstat(PyObject *self, PyObject *args)
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Guido van Rossum committed
6359
{
6360
#ifdef HAVE_LSTAT
6361
    return posix_do_stat(self, args, "O&:lstat", lstat, NULL, NULL);
6362
#else /* !HAVE_LSTAT */
6363
#ifdef MS_WINDOWS
6364
    return posix_do_stat(self, args, "O&:lstat", win32_lstat, "U:lstat",
6365
                         win32_lstat_w);
6366
#else
6367
    return posix_do_stat(self, args, "O&:lstat", STAT, NULL, NULL);
6368
#endif
6369
#endif /* !HAVE_LSTAT */
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6370 6371
}

6372

6373
#ifdef HAVE_READLINK
6374
PyDoc_STRVAR(posix_readlink__doc__,
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6375
"readlink(path) -> path\n\n\
6376
Return a string representing the path to which the symbolic link points.");
6377

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6378
static PyObject *
6379
posix_readlink(PyObject *self, PyObject *args)
Guido van Rossum's avatar
Guido van Rossum committed
6380
{
6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391 6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409
    PyObject* v;
    char buf[MAXPATHLEN];
    PyObject *opath;
    char *path;
    int n;
    int arg_is_unicode = 0;

    if (!PyArg_ParseTuple(args, "O&:readlink",
                          PyUnicode_FSConverter, &opath))
        return NULL;
    path = PyBytes_AsString(opath);
    v = PySequence_GetItem(args, 0);
    if (v == NULL) {
        Py_DECREF(opath);
        return NULL;
    }

    if (PyUnicode_Check(v)) {
        arg_is_unicode = 1;
    }
    Py_DECREF(v);

    Py_BEGIN_ALLOW_THREADS
    n = readlink(path, buf, (int) sizeof buf);
    Py_END_ALLOW_THREADS
    if (n < 0)
        return posix_error_with_allocated_filename(opath);

    Py_DECREF(opath);
6410 6411 6412 6413
    if (arg_is_unicode)
        return PyUnicode_DecodeFSDefaultAndSize(buf, n);
    else
        return PyBytes_FromStringAndSize(buf, n);
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6414
}
6415
#endif /* HAVE_READLINK */
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6416

6417

6418
#if defined(HAVE_SYMLINK) && !defined(MS_WINDOWS)
6419
PyDoc_STRVAR(posix_symlink__doc__,
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Fred Drake committed
6420
"symlink(src, dst)\n\n\
6421
Create a symbolic link pointing to src named dst.");
6422

6423
static PyObject *
6424
posix_symlink(PyObject *self, PyObject *args)
6425
{
6426
    return posix_2str(args, "O&O&:symlink", symlink);
6427 6428 6429
}
#endif /* HAVE_SYMLINK */

6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442
#if !defined(HAVE_READLINK) && defined(MS_WINDOWS)

PyDoc_STRVAR(win_readlink__doc__,
"readlink(path) -> path\n\n\
Return a string representing the path to which the symbolic link points.");

/* Windows readlink implementation */
static PyObject *
win_readlink(PyObject *self, PyObject *args)
{
    wchar_t *path;
    DWORD n_bytes_returned;
    DWORD io_result;
6443
    PyObject *po, *result;
6444 6445 6446 6447 6448 6449 6450
    HANDLE reparse_point_handle;

    char target_buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
    REPARSE_DATA_BUFFER *rdb = (REPARSE_DATA_BUFFER *)target_buffer;
    wchar_t *print_name;

    if (!PyArg_ParseTuple(args,
6451 6452 6453 6454 6455
                  "U:readlink",
                  &po))
        return NULL;
    path = PyUnicode_AsUnicode(po);
    if (path == NULL)
6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468
        return NULL;

    /* First get a handle to the reparse point */
    Py_BEGIN_ALLOW_THREADS
    reparse_point_handle = CreateFileW(
        path,
        0,
        0,
        0,
        OPEN_EXISTING,
        FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS,
        0);
    Py_END_ALLOW_THREADS
6469

6470
    if (reparse_point_handle==INVALID_HANDLE_VALUE)
6471
        return win32_error_object("readlink", po);
6472

6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486
    Py_BEGIN_ALLOW_THREADS
    /* New call DeviceIoControl to read the reparse point */
    io_result = DeviceIoControl(
        reparse_point_handle,
        FSCTL_GET_REPARSE_POINT,
        0, 0, /* in buffer */
        target_buffer, sizeof(target_buffer),
        &n_bytes_returned,
        0 /* we're not using OVERLAPPED_IO */
        );
    CloseHandle(reparse_point_handle);
    Py_END_ALLOW_THREADS

    if (io_result==0)
6487
        return win32_error_object("readlink", po);
6488 6489 6490 6491 6492 6493 6494

    if (rdb->ReparseTag != IO_REPARSE_TAG_SYMLINK)
    {
        PyErr_SetString(PyExc_ValueError,
                "not a symbolic link");
        return NULL;
    }
6495 6496 6497 6498 6499
    print_name = rdb->SymbolicLinkReparseBuffer.PathBuffer +
                 rdb->SymbolicLinkReparseBuffer.PrintNameOffset;

    result = PyUnicode_FromWideChar(print_name,
                    rdb->SymbolicLinkReparseBuffer.PrintNameLength/2);
6500 6501 6502 6503 6504
    return result;
}

#endif /* !defined(HAVE_READLINK) && defined(MS_WINDOWS) */

6505
#if defined(HAVE_SYMLINK) && defined(MS_WINDOWS)
6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 6516

/* Grab CreateSymbolicLinkW dynamically from kernel32 */
static int has_CreateSymbolicLinkW = 0;
static DWORD (CALLBACK *Py_CreateSymbolicLinkW)(LPWSTR, LPWSTR, DWORD);
static int
check_CreateSymbolicLinkW()
{
    HINSTANCE hKernel32;
    /* only recheck */
    if (has_CreateSymbolicLinkW)
        return has_CreateSymbolicLinkW;
6517
    hKernel32 = GetModuleHandleW(L"KERNEL32");
6518 6519
    *(FARPROC*)&Py_CreateSymbolicLinkW = GetProcAddress(hKernel32,
                                                        "CreateSymbolicLinkW");
6520 6521 6522 6523 6524 6525 6526 6527 6528 6529 6530 6531 6532 6533 6534 6535 6536
    if (Py_CreateSymbolicLinkW)
        has_CreateSymbolicLinkW = 1;
    return has_CreateSymbolicLinkW;
}

PyDoc_STRVAR(win_symlink__doc__,
"symlink(src, dst, target_is_directory=False)\n\n\
Create a symbolic link pointing to src named dst.\n\
target_is_directory is required if the target is to be interpreted as\n\
a directory.\n\
This function requires Windows 6.0 or greater, and raises a\n\
NotImplementedError otherwise.");

static PyObject *
win_symlink(PyObject *self, PyObject *args, PyObject *kwargs)
{
    static char *kwlist[] = {"src", "dest", "target_is_directory", NULL};
6537 6538
    PyObject *osrc, *odest;
    PyObject *usrc = NULL, *udest = NULL;
6539
    wchar_t *wsrc, *wdest;
6540 6541
    int target_is_directory = 0;
    DWORD res;
6542

6543 6544 6545 6546 6547 6548
    if (!check_CreateSymbolicLinkW())
    {
        /* raise NotImplementedError */
        return PyErr_Format(PyExc_NotImplementedError,
            "CreateSymbolicLinkW not found");
    }
6549 6550 6551
    if (!PyArg_ParseTupleAndKeywords(
            args, kwargs, "OO|i:symlink", kwlist,
            &osrc, &odest, &target_is_directory))
6552
        return NULL;
6553

6554 6555 6556 6557 6558 6559 6560
    usrc = win32_decode_filename(osrc);
    if (!usrc)
        return NULL;
    udest = win32_decode_filename(odest);
    if (!udest)
        goto error;

6561 6562 6563
    if (win32_can_symlink == 0)
        return PyErr_Format(PyExc_OSError, "symbolic link privilege not held");

6564
    wsrc = PyUnicode_AsUnicode(usrc);
6565 6566
    if (wsrc == NULL)
        goto error;
6567
    wdest = PyUnicode_AsUnicode(udest);
6568 6569 6570
    if (wsrc == NULL)
        goto error;

6571
    Py_BEGIN_ALLOW_THREADS
6572
    res = Py_CreateSymbolicLinkW(wdest, wsrc, target_is_directory);
6573
    Py_END_ALLOW_THREADS
6574

6575 6576
    Py_DECREF(usrc);
    Py_DECREF(udest);
6577
    if (!res)
6578
        return win32_error_object("symlink", osrc);
6579

6580 6581
    Py_INCREF(Py_None);
    return Py_None;
6582 6583

error:
6584 6585
    Py_XDECREF(usrc);
    Py_XDECREF(udest);
6586
    return NULL;
6587
}
6588
#endif /* defined(HAVE_SYMLINK) && defined(MS_WINDOWS) */
6589 6590

#ifdef HAVE_TIMES
6591 6592
#if defined(PYCC_VACPP) && defined(PYOS_OS2)
static long
6593
system_uptime(void)
6594 6595 6596 6597 6598 6599 6600 6601 6602 6603 6604
{
    ULONG     value = 0;

    Py_BEGIN_ALLOW_THREADS
    DosQuerySysInfo(QSV_MS_COUNT, QSV_MS_COUNT, &value, sizeof(value));
    Py_END_ALLOW_THREADS

    return value;
}

static PyObject *
6605
posix_times(PyObject *self, PyObject *noargs)
6606 6607
{
    /* Currently Only Uptime is Provided -- Others Later */
6608 6609 6610 6611 6612 6613
    return Py_BuildValue("ddddd",
                         (double)0 /* t.tms_utime / HZ */,
                         (double)0 /* t.tms_stime / HZ */,
                         (double)0 /* t.tms_cutime / HZ */,
                         (double)0 /* t.tms_cstime / HZ */,
                         (double)system_uptime() / 1000);
6614
}
6615
#else /* not OS2 */
6616 6617
#define NEED_TICKS_PER_SECOND
static long ticks_per_second = -1;
Barry Warsaw's avatar
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6618
static PyObject *
6619
posix_times(PyObject *self, PyObject *noargs)
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Guido van Rossum committed
6620
{
6621 6622 6623 6624 6625 6626 6627 6628 6629 6630 6631 6632
    struct tms t;
    clock_t c;
    errno = 0;
    c = times(&t);
    if (c == (clock_t) -1)
        return posix_error();
    return Py_BuildValue("ddddd",
                         (double)t.tms_utime / ticks_per_second,
                         (double)t.tms_stime / ticks_per_second,
                         (double)t.tms_cutime / ticks_per_second,
                         (double)t.tms_cstime / ticks_per_second,
                         (double)c / ticks_per_second);
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Guido van Rossum committed
6633
}
6634
#endif /* not OS2 */
6635
#endif /* HAVE_TIMES */
6636 6637


6638
#ifdef MS_WINDOWS
6639
#define HAVE_TIMES      /* so the method table will pick it up */
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Barry Warsaw committed
6640
static PyObject *
6641
posix_times(PyObject *self, PyObject *noargs)
6642
{
6643 6644 6645 6646 6647 6648 6649 6650 6651 6652 6653 6654 6655 6656 6657 6658 6659 6660
    FILETIME create, exit, kernel, user;
    HANDLE hProc;
    hProc = GetCurrentProcess();
    GetProcessTimes(hProc, &create, &exit, &kernel, &user);
    /* The fields of a FILETIME structure are the hi and lo part
       of a 64-bit value expressed in 100 nanosecond units.
       1e7 is one second in such units; 1e-7 the inverse.
       429.4967296 is 2**32 / 1e7 or 2**32 * 1e-7.
    */
    return Py_BuildValue(
        "ddddd",
        (double)(user.dwHighDateTime*429.4967296 +
                 user.dwLowDateTime*1e-7),
        (double)(kernel.dwHighDateTime*429.4967296 +
                 kernel.dwLowDateTime*1e-7),
        (double)0,
        (double)0,
        (double)0);
6661
}
6662
#endif /* MS_WINDOWS */
6663 6664

#ifdef HAVE_TIMES
6665
PyDoc_STRVAR(posix_times__doc__,
Fred Drake's avatar
Fred Drake committed
6666
"times() -> (utime, stime, cutime, cstime, elapsed_time)\n\n\
6667
Return a tuple of floating point numbers indicating process times.");
6668
#endif
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6669

6670

6671 6672 6673 6674 6675 6676 6677 6678
#ifdef HAVE_GETSID
PyDoc_STRVAR(posix_getsid__doc__,
"getsid(pid) -> sid\n\n\
Call the system call getsid().");

static PyObject *
posix_getsid(PyObject *self, PyObject *args)
{
6679 6680 6681 6682 6683 6684 6685 6686
    pid_t pid;
    int sid;
    if (!PyArg_ParseTuple(args, _Py_PARSE_PID ":getsid", &pid))
        return NULL;
    sid = getsid(pid);
    if (sid < 0)
        return posix_error();
    return PyLong_FromLong((long)sid);
6687 6688 6689 6690
}
#endif /* HAVE_GETSID */


6691
#ifdef HAVE_SETSID
6692
PyDoc_STRVAR(posix_setsid__doc__,
Fred Drake's avatar
Fred Drake committed
6693
"setsid()\n\n\
6694
Call the system call setsid().");
6695

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6696
static PyObject *
6697
posix_setsid(PyObject *self, PyObject *noargs)
6698
{
6699 6700 6701 6702
    if (setsid() < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
6703
}
6704
#endif /* HAVE_SETSID */
6705

6706
#ifdef HAVE_SETPGID
6707
PyDoc_STRVAR(posix_setpgid__doc__,
Fred Drake's avatar
Fred Drake committed
6708
"setpgid(pid, pgrp)\n\n\
6709
Call the system call setpgid().");
6710

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6711
static PyObject *
6712
posix_setpgid(PyObject *self, PyObject *args)
6713
{
6714 6715 6716 6717 6718 6719 6720 6721
    pid_t pid;
    int pgrp;
    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i:setpgid", &pid, &pgrp))
        return NULL;
    if (setpgid(pid, pgrp) < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
6722
}
6723
#endif /* HAVE_SETPGID */
6724

6725

6726
#ifdef HAVE_TCGETPGRP
6727
PyDoc_STRVAR(posix_tcgetpgrp__doc__,
Fred Drake's avatar
Fred Drake committed
6728
"tcgetpgrp(fd) -> pgid\n\n\
6729
Return the process group associated with the terminal given by a fd.");
6730

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Barry Warsaw committed
6731
static PyObject *
6732
posix_tcgetpgrp(PyObject *self, PyObject *args)
6733
{
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    int fd;
    pid_t pgid;
    if (!PyArg_ParseTuple(args, "i:tcgetpgrp", &fd))
        return NULL;
    pgid = tcgetpgrp(fd);
    if (pgid < 0)
        return posix_error();
    return PyLong_FromPid(pgid);
6742
}
6743
#endif /* HAVE_TCGETPGRP */
6744

6745

6746
#ifdef HAVE_TCSETPGRP
6747
PyDoc_STRVAR(posix_tcsetpgrp__doc__,
Fred Drake's avatar
Fred Drake committed
6748
"tcsetpgrp(fd, pgid)\n\n\
6749
Set the process group associated with the terminal given by a fd.");
6750

Barry Warsaw's avatar
Barry Warsaw committed
6751
static PyObject *
6752
posix_tcsetpgrp(PyObject *self, PyObject *args)
6753
{
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    int fd;
    pid_t pgid;
    if (!PyArg_ParseTuple(args, "i" _Py_PARSE_PID ":tcsetpgrp", &fd, &pgid))
        return NULL;
    if (tcsetpgrp(fd, pgid) < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
6762
}
6763
#endif /* HAVE_TCSETPGRP */
Guido van Rossum's avatar
Guido van Rossum committed
6764

6765 6766
/* Functions acting on file descriptors */

6767
PyDoc_STRVAR(posix_open__doc__,
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Fred Drake committed
6768
"open(filename, flag [, mode=0777]) -> fd\n\n\
6769
Open a file (for low level IO).");
6770

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6771
static PyObject *
6772
posix_open(PyObject *self, PyObject *args)
6773
{
6774 6775 6776 6777 6778
    PyObject *ofile;
    char *file;
    int flag;
    int mode = 0777;
    int fd;
6779 6780

#ifdef MS_WINDOWS
6781
    PyObject *po;
6782
    if (PyArg_ParseTuple(args, "Ui|i:open", &po, &flag, &mode)) {
6783 6784 6785 6786
        wchar_t *wpath = PyUnicode_AsUnicode(po);
        if (wpath == NULL)
            return NULL;

6787
        Py_BEGIN_ALLOW_THREADS
6788
        fd = _wopen(wpath, flag, mode);
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        Py_END_ALLOW_THREADS
        if (fd < 0)
            return posix_error();
        return PyLong_FromLong((long)fd);
    }
    /* Drop the argument parsing error as narrow strings
       are also valid. */
    PyErr_Clear();
#endif

6799
    if (!PyArg_ParseTuple(args, "O&i|i:open",
6800 6801 6802
                          PyUnicode_FSConverter, &ofile,
                          &flag, &mode))
        return NULL;
6803 6804 6805 6806 6807 6808
#ifdef MS_WINDOWS
    if (win32_warn_bytes_api()) {
        Py_DECREF(ofile);
        return NULL;
    }
#endif
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    file = PyBytes_AsString(ofile);
    Py_BEGIN_ALLOW_THREADS
    fd = open(file, flag, mode);
    Py_END_ALLOW_THREADS
    if (fd < 0)
        return posix_error_with_allocated_filename(ofile);
    Py_DECREF(ofile);
    return PyLong_FromLong((long)fd);
6817 6818
}

6819

6820
PyDoc_STRVAR(posix_close__doc__,
Fred Drake's avatar
Fred Drake committed
6821
"close(fd)\n\n\
6822
Close a file descriptor (for low level IO).");
6823

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Barry Warsaw committed
6824
static PyObject *
6825
posix_close(PyObject *self, PyObject *args)
6826
{
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    int fd, res;
    if (!PyArg_ParseTuple(args, "i:close", &fd))
        return NULL;
    if (!_PyVerify_fd(fd))
        return posix_error();
    Py_BEGIN_ALLOW_THREADS
    res = close(fd);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
6839 6840
}

6841

6842
PyDoc_STRVAR(posix_closerange__doc__,
6843 6844 6845 6846 6847 6848
"closerange(fd_low, fd_high)\n\n\
Closes all file descriptors in [fd_low, fd_high), ignoring errors.");

static PyObject *
posix_closerange(PyObject *self, PyObject *args)
{
6849 6850 6851 6852 6853 6854 6855 6856 6857
    int fd_from, fd_to, i;
    if (!PyArg_ParseTuple(args, "ii:closerange", &fd_from, &fd_to))
        return NULL;
    Py_BEGIN_ALLOW_THREADS
    for (i = fd_from; i < fd_to; i++)
        if (_PyVerify_fd(i))
            close(i);
    Py_END_ALLOW_THREADS
    Py_RETURN_NONE;
6858 6859 6860
}


6861
PyDoc_STRVAR(posix_dup__doc__,
Fred Drake's avatar
Fred Drake committed
6862
"dup(fd) -> fd2\n\n\
6863
Return a duplicate of a file descriptor.");
6864

Barry Warsaw's avatar
Barry Warsaw committed
6865
static PyObject *
6866
posix_dup(PyObject *self, PyObject *args)
6867
{
6868 6869 6870 6871 6872 6873 6874 6875 6876
    int fd;
    if (!PyArg_ParseTuple(args, "i:dup", &fd))
        return NULL;
    if (!_PyVerify_fd(fd))
        return posix_error();
    fd = dup(fd);
    if (fd < 0)
        return posix_error();
    return PyLong_FromLong((long)fd);
6877 6878
}

6879

6880
PyDoc_STRVAR(posix_dup2__doc__,
6881
"dup2(old_fd, new_fd)\n\n\
6882
Duplicate file descriptor.");
6883

Barry Warsaw's avatar
Barry Warsaw committed
6884
static PyObject *
6885
posix_dup2(PyObject *self, PyObject *args)
6886
{
6887 6888 6889 6890 6891 6892 6893 6894 6895 6896
    int fd, fd2, res;
    if (!PyArg_ParseTuple(args, "ii:dup2", &fd, &fd2))
        return NULL;
    if (!_PyVerify_fd_dup2(fd, fd2))
        return posix_error();
    res = dup2(fd, fd2);
    if (res < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
6897 6898
}

6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925 6926 6927 6928 6929 6930
#ifdef HAVE_LOCKF
PyDoc_STRVAR(posix_lockf__doc__,
"lockf(fd, cmd, len)\n\n\
Apply, test or remove a POSIX lock on an open file descriptor.\n\n\
fd is an open file descriptor.\n\
cmd specifies the command to use - one of F_LOCK, F_TLOCK, F_ULOCK or\n\
F_TEST.\n\
len specifies the section of the file to lock.");

static PyObject *
posix_lockf(PyObject *self, PyObject *args)
{
    int fd, cmd, res;
    off_t len;
    if (!PyArg_ParseTuple(args, "iiO&:lockf",
            &fd, &cmd, _parse_off_t, &len))
        return NULL;

    Py_BEGIN_ALLOW_THREADS
    res = lockf(fd, cmd, len);
    Py_END_ALLOW_THREADS

    if (res < 0)
        return posix_error();

    Py_RETURN_NONE;
}
#endif


PyDoc_STRVAR(posix_lseek__doc__,
"lseek(fd, pos, how) -> newpos\n\n\
6931 6932
Set the current position of a file descriptor.\n\
Return the new cursor position in bytes, starting from the beginning.");
6933 6934 6935 6936 6937 6938 6939 6940 6941 6942

static PyObject *
posix_lseek(PyObject *self, PyObject *args)
{
    int fd, how;
#if defined(MS_WIN64) || defined(MS_WINDOWS)
    PY_LONG_LONG pos, res;
#else
    off_t pos, res;
#endif
6943 6944
    PyObject *posobj;
    if (!PyArg_ParseTuple(args, "iOi:lseek", &fd, &posobj, &how))
6945 6946 6947 6948 6949 6950 6951 6952 6953 6954
        return NULL;
#ifdef SEEK_SET
    /* Turn 0, 1, 2 into SEEK_{SET,CUR,END} */
    switch (how) {
    case 0: how = SEEK_SET; break;
    case 1: how = SEEK_CUR; break;
    case 2: how = SEEK_END; break;
    }
#endif /* SEEK_END */

6955 6956 6957 6958 6959
#if !defined(HAVE_LARGEFILE_SUPPORT)
    pos = PyLong_AsLong(posobj);
#else
    pos = PyLong_AsLongLong(posobj);
#endif
6960 6961 6962 6963 6964 6965 6966 6967 6968 6969 6970 6971 6972 6973 6974 6975 6976 6977 6978 6979 6980 6981 6982 6983 6984 6985 6986 6987 6988 6989 6990 6991 6992 6993 6994 6995 6996 6997 6998 6999 7000 7001 7002 7003 7004 7005 7006 7007 7008 7009 7010 7011 7012 7013 7014 7015 7016 7017 7018 7019 7020 7021 7022 7023 7024 7025 7026 7027 7028 7029 7030 7031 7032 7033 7034 7035 7036 7037 7038 7039
    if (PyErr_Occurred())
        return NULL;

    if (!_PyVerify_fd(fd))
        return posix_error();
    Py_BEGIN_ALLOW_THREADS
#if defined(MS_WIN64) || defined(MS_WINDOWS)
    res = _lseeki64(fd, pos, how);
#else
    res = lseek(fd, pos, how);
#endif
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error();

#if !defined(HAVE_LARGEFILE_SUPPORT)
    return PyLong_FromLong(res);
#else
    return PyLong_FromLongLong(res);
#endif
}


PyDoc_STRVAR(posix_read__doc__,
"read(fd, buffersize) -> string\n\n\
Read a file descriptor.");

static PyObject *
posix_read(PyObject *self, PyObject *args)
{
    int fd, size;
    Py_ssize_t n;
    PyObject *buffer;
    if (!PyArg_ParseTuple(args, "ii:read", &fd, &size))
        return NULL;
    if (size < 0) {
        errno = EINVAL;
        return posix_error();
    }
    buffer = PyBytes_FromStringAndSize((char *)NULL, size);
    if (buffer == NULL)
        return NULL;
    if (!_PyVerify_fd(fd)) {
        Py_DECREF(buffer);
        return posix_error();
    }
    Py_BEGIN_ALLOW_THREADS
    n = read(fd, PyBytes_AS_STRING(buffer), size);
    Py_END_ALLOW_THREADS
    if (n < 0) {
        Py_DECREF(buffer);
        return posix_error();
    }
    if (n != size)
        _PyBytes_Resize(&buffer, n);
    return buffer;
}

#if (defined(HAVE_SENDFILE) && (defined(__FreeBSD__) || defined(__DragonFly__) \
    || defined(__APPLE__))) || defined(HAVE_READV) || defined(HAVE_WRITEV)
static Py_ssize_t
iov_setup(struct iovec **iov, Py_buffer **buf, PyObject *seq, int cnt, int type)
{
    int i, j;
    Py_ssize_t blen, total = 0;

    *iov = PyMem_New(struct iovec, cnt);
    if (*iov == NULL) {
        PyErr_NoMemory();
        return total;
    }

    *buf = PyMem_New(Py_buffer, cnt);
    if (*buf == NULL) {
        PyMem_Del(*iov);
        PyErr_NoMemory();
        return total;
    }

    for (i = 0; i < cnt; i++) {
7040 7041 7042 7043 7044 7045
        PyObject *item = PySequence_GetItem(seq, i);
        if (item == NULL)
            goto fail;
        if (PyObject_GetBuffer(item, &(*buf)[i], type) == -1) {
            Py_DECREF(item);
            goto fail;
7046
        }
7047
        Py_DECREF(item);
7048 7049 7050 7051 7052 7053
        (*iov)[i].iov_base = (*buf)[i].buf;
        blen = (*buf)[i].len;
        (*iov)[i].iov_len = blen;
        total += blen;
    }
    return total;
7054 7055 7056 7057 7058 7059 7060 7061

fail:
    PyMem_Del(*iov);
    for (j = 0; j < i; j++) {
        PyBuffer_Release(&(*buf)[j]);
    }
    PyMem_Del(*buf);
    return 0;
7062 7063 7064 7065 7066 7067 7068 7069 7070 7071 7072 7073 7074
}

static void
iov_cleanup(struct iovec *iov, Py_buffer *buf, int cnt)
{
    int i;
    PyMem_Del(iov);
    for (i = 0; i < cnt; i++) {
        PyBuffer_Release(&buf[i]);
    }
    PyMem_Del(buf);
}
#endif
7075

7076 7077 7078 7079 7080 7081
#ifdef HAVE_READV
PyDoc_STRVAR(posix_readv__doc__,
"readv(fd, buffers) -> bytesread\n\n\
Read from a file descriptor into a number of writable buffers. buffers\n\
is an arbitrary sequence of writable buffers.\n\
Returns the total number of bytes read.");
7082

Barry Warsaw's avatar
Barry Warsaw committed
7083
static PyObject *
7084
posix_readv(PyObject *self, PyObject *args)
7085
{
7086 7087 7088 7089 7090 7091 7092 7093 7094 7095 7096
    int fd, cnt;
    Py_ssize_t n;
    PyObject *seq;
    struct iovec *iov;
    Py_buffer *buf;

    if (!PyArg_ParseTuple(args, "iO:readv", &fd, &seq))
        return NULL;
    if (!PySequence_Check(seq)) {
        PyErr_SetString(PyExc_TypeError,
            "readv() arg 2 must be a sequence");
7097 7098
        return NULL;
    }
7099
    cnt = PySequence_Size(seq);
7100

7101
    if (!iov_setup(&iov, &buf, seq, cnt, PyBUF_WRITABLE))
7102
        return NULL;
7103

7104
    Py_BEGIN_ALLOW_THREADS
7105
    n = readv(fd, iov, cnt);
7106
    Py_END_ALLOW_THREADS
7107

7108 7109
    iov_cleanup(iov, buf, cnt);
    return PyLong_FromSsize_t(n);
7110
}
7111
#endif
7112

7113 7114 7115 7116 7117
#ifdef HAVE_PREAD
PyDoc_STRVAR(posix_pread__doc__,
"pread(fd, buffersize, offset) -> string\n\n\
Read from a file descriptor, fd, at a position of offset. It will read up\n\
to buffersize number of bytes. The file offset remains unchanged.");
7118

Barry Warsaw's avatar
Barry Warsaw committed
7119
static PyObject *
7120
posix_pread(PyObject *self, PyObject *args)
7121
{
7122
    int fd, size;
7123
    off_t offset;
7124 7125
    Py_ssize_t n;
    PyObject *buffer;
7126
    if (!PyArg_ParseTuple(args, "iiO&:pread", &fd, &size, _parse_off_t, &offset))
7127
        return NULL;
7128

7129 7130 7131 7132 7133 7134 7135
    if (size < 0) {
        errno = EINVAL;
        return posix_error();
    }
    buffer = PyBytes_FromStringAndSize((char *)NULL, size);
    if (buffer == NULL)
        return NULL;
Stefan Krah's avatar
Stefan Krah committed
7136 7137
    if (!_PyVerify_fd(fd)) {
        Py_DECREF(buffer);
7138
        return posix_error();
Stefan Krah's avatar
Stefan Krah committed
7139
    }
7140
    Py_BEGIN_ALLOW_THREADS
7141
    n = pread(fd, PyBytes_AS_STRING(buffer), size, offset);
7142 7143 7144 7145 7146 7147 7148 7149
    Py_END_ALLOW_THREADS
    if (n < 0) {
        Py_DECREF(buffer);
        return posix_error();
    }
    if (n != size)
        _PyBytes_Resize(&buffer, n);
    return buffer;
7150
}
7151
#endif
7152

7153
PyDoc_STRVAR(posix_write__doc__,
Fred Drake's avatar
Fred Drake committed
7154
"write(fd, string) -> byteswritten\n\n\
7155
Write a string to a file descriptor.");
7156

Barry Warsaw's avatar
Barry Warsaw committed
7157
static PyObject *
7158
posix_write(PyObject *self, PyObject *args)
7159
{
7160 7161
    Py_buffer pbuf;
    int fd;
7162
    Py_ssize_t size, len;
Thomas Wouters's avatar
Thomas Wouters committed
7163

7164 7165
    if (!PyArg_ParseTuple(args, "iy*:write", &fd, &pbuf))
        return NULL;
Stefan Krah's avatar
Stefan Krah committed
7166 7167
    if (!_PyVerify_fd(fd)) {
        PyBuffer_Release(&pbuf);
7168
        return posix_error();
Stefan Krah's avatar
Stefan Krah committed
7169
    }
7170
    len = pbuf.len;
7171
    Py_BEGIN_ALLOW_THREADS
7172 7173 7174 7175 7176
#if defined(MS_WIN64) || defined(MS_WINDOWS)
    if (len > INT_MAX)
        len = INT_MAX;
    size = write(fd, pbuf.buf, (int)len);
#else
7177
    size = write(fd, pbuf.buf, len);
7178
#endif
7179
    Py_END_ALLOW_THREADS
Stefan Krah's avatar
Stefan Krah committed
7180
    PyBuffer_Release(&pbuf);
7181 7182 7183
    if (size < 0)
        return posix_error();
    return PyLong_FromSsize_t(size);
7184 7185
}

7186 7187 7188 7189 7190 7191 7192 7193 7194 7195 7196 7197 7198 7199 7200 7201 7202 7203 7204 7205 7206 7207 7208 7209 7210
#ifdef HAVE_SENDFILE
PyDoc_STRVAR(posix_sendfile__doc__,
"sendfile(out, in, offset, nbytes) -> byteswritten\n\
sendfile(out, in, offset, nbytes, headers=None, trailers=None, flags=0)\n\
            -> byteswritten\n\
Copy nbytes bytes from file descriptor in to file descriptor out.");

static PyObject *
posix_sendfile(PyObject *self, PyObject *args, PyObject *kwdict)
{
    int in, out;
    Py_ssize_t ret;
    off_t offset;

#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__APPLE__)
#ifndef __APPLE__
    Py_ssize_t len;
#endif
    PyObject *headers = NULL, *trailers = NULL;
    Py_buffer *hbuf, *tbuf;
    off_t sbytes;
    struct sf_hdtr sf;
    int flags = 0;
    sf.headers = NULL;
    sf.trailers = NULL;
7211 7212 7213
    static char *keywords[] = {"out", "in",
                                "offset", "count",
                                "headers", "trailers", "flags", NULL};
7214 7215 7216

#ifdef __APPLE__
    if (!PyArg_ParseTupleAndKeywords(args, kwdict, "iiO&O&|OOi:sendfile",
7217
        keywords, &out, &in, _parse_off_t, &offset, _parse_off_t, &sbytes,
7218 7219
#else
    if (!PyArg_ParseTupleAndKeywords(args, kwdict, "iiO&n|OOi:sendfile",
7220
        keywords, &out, &in, _parse_off_t, &offset, &len,
7221 7222 7223 7224 7225 7226 7227 7228 7229
#endif
                &headers, &trailers, &flags))
            return NULL;
    if (headers != NULL) {
        if (!PySequence_Check(headers)) {
            PyErr_SetString(PyExc_TypeError,
                "sendfile() headers must be a sequence or None");
            return NULL;
        } else {
7230
            Py_ssize_t i = 0; /* Avoid uninitialized warning */
7231
            sf.hdr_cnt = PySequence_Size(headers);
7232 7233 7234
            if (sf.hdr_cnt > 0 &&
                !(i = iov_setup(&(sf.headers), &hbuf,
                                headers, sf.hdr_cnt, PyBUF_SIMPLE)))
7235
                return NULL;
7236 7237 7238
#ifdef __APPLE__
            sbytes += i;
#endif
7239 7240 7241 7242 7243 7244 7245 7246
        }
    }
    if (trailers != NULL) {
        if (!PySequence_Check(trailers)) {
            PyErr_SetString(PyExc_TypeError,
                "sendfile() trailers must be a sequence or None");
            return NULL;
        } else {
7247
            Py_ssize_t i = 0; /* Avoid uninitialized warning */
7248
            sf.trl_cnt = PySequence_Size(trailers);
7249 7250 7251
            if (sf.trl_cnt > 0 &&
                !(i = iov_setup(&(sf.trailers), &tbuf,
                                trailers, sf.trl_cnt, PyBUF_SIMPLE)))
7252
                return NULL;
7253 7254 7255
#ifdef __APPLE__
            sbytes += i;
#endif
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        }
    }

    Py_BEGIN_ALLOW_THREADS
#ifdef __APPLE__
    ret = sendfile(in, out, offset, &sbytes, &sf, flags);
#else
    ret = sendfile(in, out, offset, len, &sf, &sbytes, flags);
#endif
    Py_END_ALLOW_THREADS

    if (sf.headers != NULL)
        iov_cleanup(sf.headers, hbuf, sf.hdr_cnt);
    if (sf.trailers != NULL)
        iov_cleanup(sf.trailers, tbuf, sf.trl_cnt);

    if (ret < 0) {
        if ((errno == EAGAIN) || (errno == EBUSY)) {
            if (sbytes != 0) {
                // some data has been sent
                goto done;
            }
            else {
                // no data has been sent; upper application is supposed
                // to retry on EAGAIN or EBUSY
                return posix_error();
            }
        }
        return posix_error();
    }
    goto done;

done:
    #if !defined(HAVE_LARGEFILE_SUPPORT)
        return Py_BuildValue("l", sbytes);
    #else
        return Py_BuildValue("L", sbytes);
    #endif

#else
    Py_ssize_t count;
    PyObject *offobj;
    static char *keywords[] = {"out", "in",
                                "offset", "count", NULL};
    if (!PyArg_ParseTupleAndKeywords(args, kwdict, "iiOn:sendfile",
            keywords, &out, &in, &offobj, &count))
        return NULL;
#ifdef linux
    if (offobj == Py_None) {
        Py_BEGIN_ALLOW_THREADS
        ret = sendfile(out, in, NULL, count);
        Py_END_ALLOW_THREADS
        if (ret < 0)
            return posix_error();
7310
        return Py_BuildValue("n", ret);
7311 7312
    }
#endif
7313 7314
    if (!_parse_off_t(offobj, &offset))
        return NULL;
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    Py_BEGIN_ALLOW_THREADS
    ret = sendfile(out, in, &offset, count);
    Py_END_ALLOW_THREADS
    if (ret < 0)
        return posix_error();
    return Py_BuildValue("n", ret);
#endif
}
#endif
7324

7325
PyDoc_STRVAR(posix_fstat__doc__,
Fred Drake's avatar
Fred Drake committed
7326
"fstat(fd) -> stat result\n\n\
7327
Like stat(), but for an open file descriptor.");
7328

Barry Warsaw's avatar
Barry Warsaw committed
7329
static PyObject *
7330
posix_fstat(PyObject *self, PyObject *args)
7331
{
7332 7333 7334 7335 7336
    int fd;
    STRUCT_STAT st;
    int res;
    if (!PyArg_ParseTuple(args, "i:fstat", &fd))
        return NULL;
7337
#ifdef __VMS
7338 7339 7340 7341 7342 7343 7344 7345 7346
    /* on OpenVMS we must ensure that all bytes are written to the file */
    fsync(fd);
#endif
    if (!_PyVerify_fd(fd))
        return posix_error();
    Py_BEGIN_ALLOW_THREADS
    res = FSTAT(fd, &st);
    Py_END_ALLOW_THREADS
    if (res != 0) {
7347
#ifdef MS_WINDOWS
7348
        return win32_error("fstat", NULL);
7349
#else
7350
        return posix_error();
7351
#endif
7352
    }
7353

7354
    return _pystat_fromstructstat(&st);
7355 7356
}

7357
PyDoc_STRVAR(posix_isatty__doc__,
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7358
"isatty(fd) -> bool\n\n\
7359
Return True if the file descriptor 'fd' is an open file descriptor\n\
7360
connected to the slave end of a terminal.");
7361 7362

static PyObject *
7363
posix_isatty(PyObject *self, PyObject *args)
7364
{
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    int fd;
    if (!PyArg_ParseTuple(args, "i:isatty", &fd))
        return NULL;
    if (!_PyVerify_fd(fd))
        return PyBool_FromLong(0);
    return PyBool_FromLong(isatty(fd));
7371
}
7372

7373
#ifdef HAVE_PIPE
7374
PyDoc_STRVAR(posix_pipe__doc__,
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7375
"pipe() -> (read_end, write_end)\n\n\
7376
Create a pipe.");
7377

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7378
static PyObject *
7379
posix_pipe(PyObject *self, PyObject *noargs)
7380
{
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#if defined(PYOS_OS2)
    HFILE read, write;
    APIRET rc;

    rc = DosCreatePipe( &read, &write, 4096);
    if (rc != NO_ERROR)
7387
        return os2_error(rc);
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7388 7389 7390

    return Py_BuildValue("(ii)", read, write);
#else
7391
#if !defined(MS_WINDOWS)
7392 7393 7394 7395 7396 7397
    int fds[2];
    int res;
    res = pipe(fds);
    if (res != 0)
        return posix_error();
    return Py_BuildValue("(ii)", fds[0], fds[1]);
7398
#else /* MS_WINDOWS */
7399 7400 7401 7402 7403 7404 7405 7406 7407
    HANDLE read, write;
    int read_fd, write_fd;
    BOOL ok;
    ok = CreatePipe(&read, &write, NULL, 0);
    if (!ok)
        return win32_error("CreatePipe", NULL);
    read_fd = _open_osfhandle((Py_intptr_t)read, 0);
    write_fd = _open_osfhandle((Py_intptr_t)write, 1);
    return Py_BuildValue("(ii)", read_fd, write_fd);
7408
#endif /* MS_WINDOWS */
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7409
#endif
7410
}
7411 7412
#endif  /* HAVE_PIPE */

7413 7414
#ifdef HAVE_PIPE2
PyDoc_STRVAR(posix_pipe2__doc__,
7415 7416 7417 7418
"pipe2(flags) -> (read_end, write_end)\n\n\
Create a pipe with flags set atomically.\n\
flags can be constructed by ORing together one or more of these values:\n\
O_NONBLOCK, O_CLOEXEC.\n\
7419 7420 7421
");

static PyObject *
7422
posix_pipe2(PyObject *self, PyObject *arg)
7423
{
7424
    int flags;
7425 7426 7427
    int fds[2];
    int res;

7428 7429
    flags = PyLong_AsLong(arg);
    if (flags == -1 && PyErr_Occurred())
7430 7431 7432 7433 7434 7435 7436 7437 7438
        return NULL;

    res = pipe2(fds, flags);
    if (res != 0)
        return posix_error();
    return Py_BuildValue("(ii)", fds[0], fds[1]);
}
#endif /* HAVE_PIPE2 */

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#ifdef HAVE_WRITEV
PyDoc_STRVAR(posix_writev__doc__,
"writev(fd, buffers) -> byteswritten\n\n\
Write the contents of buffers to a file descriptor, where buffers is an\n\
arbitrary sequence of buffers.\n\
Returns the total bytes written.");

static PyObject *
posix_writev(PyObject *self, PyObject *args)
{
    int fd, cnt;
    Py_ssize_t res;
    PyObject *seq;
    struct iovec *iov;
    Py_buffer *buf;
    if (!PyArg_ParseTuple(args, "iO:writev", &fd, &seq))
        return NULL;
    if (!PySequence_Check(seq)) {
        PyErr_SetString(PyExc_TypeError,
            "writev() arg 2 must be a sequence");
        return NULL;
    }
    cnt = PySequence_Size(seq);

    if (!iov_setup(&iov, &buf, seq, cnt, PyBUF_SIMPLE)) {
        return NULL;
    }

    Py_BEGIN_ALLOW_THREADS
    res = writev(fd, iov, cnt);
    Py_END_ALLOW_THREADS

    iov_cleanup(iov, buf, cnt);
    return PyLong_FromSsize_t(res);
}
#endif

#ifdef HAVE_PWRITE
PyDoc_STRVAR(posix_pwrite__doc__,
"pwrite(fd, string, offset) -> byteswritten\n\n\
Write string to a file descriptor, fd, from offset, leaving the file\n\
offset unchanged.");

static PyObject *
posix_pwrite(PyObject *self, PyObject *args)
{
    Py_buffer pbuf;
    int fd;
    off_t offset;
    Py_ssize_t size;

    if (!PyArg_ParseTuple(args, "iy*O&:pwrite", &fd, &pbuf, _parse_off_t, &offset))
        return NULL;

    if (!_PyVerify_fd(fd)) {
        PyBuffer_Release(&pbuf);
        return posix_error();
    }
    Py_BEGIN_ALLOW_THREADS
    size = pwrite(fd, pbuf.buf, (size_t)pbuf.len, offset);
    Py_END_ALLOW_THREADS
    PyBuffer_Release(&pbuf);
    if (size < 0)
        return posix_error();
    return PyLong_FromSsize_t(size);
}
#endif
7506

7507
#ifdef HAVE_MKFIFO
7508
PyDoc_STRVAR(posix_mkfifo__doc__,
7509
"mkfifo(filename [, mode=0666])\n\n\
7510
Create a FIFO (a POSIX named pipe).");
7511

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Barry Warsaw committed
7512
static PyObject *
7513
posix_mkfifo(PyObject *self, PyObject *args)
7514
{
7515
    PyObject *opath;
7516 7517 7518
    char *filename;
    int mode = 0666;
    int res;
7519 7520
    if (!PyArg_ParseTuple(args, "O&|i:mkfifo", PyUnicode_FSConverter, &opath,
                          &mode))
7521
        return NULL;
7522
    filename = PyBytes_AS_STRING(opath);
7523 7524 7525
    Py_BEGIN_ALLOW_THREADS
    res = mkfifo(filename, mode);
    Py_END_ALLOW_THREADS
7526
    Py_DECREF(opath);
7527 7528 7529 7530
    if (res < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
7531 7532 7533 7534
}
#endif


7535
#if defined(HAVE_MKNOD) && defined(HAVE_MAKEDEV)
7536
PyDoc_STRVAR(posix_mknod__doc__,
7537
"mknod(filename [, mode=0600, device])\n\n\
7538 7539 7540 7541
Create a filesystem node (file, device special file or named pipe)\n\
named filename. mode specifies both the permissions to use and the\n\
type of node to be created, being combined (bitwise OR) with one of\n\
S_IFREG, S_IFCHR, S_IFBLK, and S_IFIFO. For S_IFCHR and S_IFBLK,\n\
7542 7543
device defines the newly created device special file (probably using\n\
os.makedev()), otherwise it is ignored.");
7544 7545 7546 7547 7548


static PyObject *
posix_mknod(PyObject *self, PyObject *args)
{
7549
    PyObject *opath;
7550 7551 7552 7553
    char *filename;
    int mode = 0600;
    int device = 0;
    int res;
7554 7555
    if (!PyArg_ParseTuple(args, "O&|ii:mknod", PyUnicode_FSConverter, &opath,
                          &mode, &device))
7556
        return NULL;
7557
    filename = PyBytes_AS_STRING(opath);
7558 7559 7560
    Py_BEGIN_ALLOW_THREADS
    res = mknod(filename, mode, device);
    Py_END_ALLOW_THREADS
7561
    Py_DECREF(opath);
7562 7563 7564 7565
    if (res < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
7566 7567 7568
}
#endif

7569 7570 7571 7572 7573 7574 7575 7576
#ifdef HAVE_DEVICE_MACROS
PyDoc_STRVAR(posix_major__doc__,
"major(device) -> major number\n\
Extracts a device major number from a raw device number.");

static PyObject *
posix_major(PyObject *self, PyObject *args)
{
7577 7578 7579 7580
    int device;
    if (!PyArg_ParseTuple(args, "i:major", &device))
        return NULL;
    return PyLong_FromLong((long)major(device));
7581 7582 7583 7584 7585 7586 7587 7588 7589
}

PyDoc_STRVAR(posix_minor__doc__,
"minor(device) -> minor number\n\
Extracts a device minor number from a raw device number.");

static PyObject *
posix_minor(PyObject *self, PyObject *args)
{
7590 7591 7592 7593
    int device;
    if (!PyArg_ParseTuple(args, "i:minor", &device))
        return NULL;
    return PyLong_FromLong((long)minor(device));
7594 7595 7596 7597 7598 7599 7600 7601 7602
}

PyDoc_STRVAR(posix_makedev__doc__,
"makedev(major, minor) -> device number\n\
Composes a raw device number from the major and minor device numbers.");

static PyObject *
posix_makedev(PyObject *self, PyObject *args)
{
7603 7604 7605 7606
    int major, minor;
    if (!PyArg_ParseTuple(args, "ii:makedev", &major, &minor))
        return NULL;
    return PyLong_FromLong((long)makedev(major, minor));
7607 7608 7609
}
#endif /* device macros */

7610

7611
#ifdef HAVE_FTRUNCATE
7612
PyDoc_STRVAR(posix_ftruncate__doc__,
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Fred Drake committed
7613
"ftruncate(fd, length)\n\n\
7614
Truncate a file to a specified length.");
7615

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7616
static PyObject *
7617
posix_ftruncate(PyObject *self, PyObject *args)
7618
{
7619 7620 7621
    int fd;
    off_t length;
    int res;
7622

7623
    if (!PyArg_ParseTuple(args, "iO&:ftruncate", &fd, _parse_off_t, &length))
7624
        return NULL;
7625

7626 7627 7628 7629 7630 7631 7632
    Py_BEGIN_ALLOW_THREADS
    res = ftruncate(fd, length);
    Py_END_ALLOW_THREADS
    if (res < 0)
        return posix_error();
    Py_INCREF(Py_None);
    return Py_None;
7633 7634
}
#endif
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7635

7636 7637 7638 7639 7640 7641 7642 7643 7644 7645 7646 7647 7648 7649 7650 7651 7652 7653 7654 7655 7656 7657 7658 7659 7660 7661 7662 7663 7664 7665 7666 7667 7668 7669 7670 7671 7672 7673 7674 7675 7676 7677 7678 7679 7680 7681 7682 7683 7684 7685 7686 7687 7688 7689 7690 7691 7692 7693 7694 7695 7696 7697 7698 7699 7700 7701 7702 7703 7704 7705 7706 7707 7708 7709 7710 7711 7712 7713 7714 7715 7716 7717 7718 7719 7720 7721 7722
#ifdef HAVE_TRUNCATE
PyDoc_STRVAR(posix_truncate__doc__,
"truncate(path, length)\n\n\
Truncate the file given by path to length bytes.");

static PyObject *
posix_truncate(PyObject *self, PyObject *args)
{
    PyObject *opath;
    const char *path;
    off_t length;
    int res;

    if (!PyArg_ParseTuple(args, "O&O&:truncate",
            PyUnicode_FSConverter, &opath, _parse_off_t, &length))
        return NULL;
    path = PyBytes_AsString(opath);

    Py_BEGIN_ALLOW_THREADS
    res = truncate(path, length);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif

#ifdef HAVE_POSIX_FALLOCATE
PyDoc_STRVAR(posix_posix_fallocate__doc__,
"posix_fallocate(fd, offset, len)\n\n\
Ensures that enough disk space is allocated for the file specified by fd\n\
starting from offset and continuing for len bytes.");

static PyObject *
posix_posix_fallocate(PyObject *self, PyObject *args)
{
    off_t len, offset;
    int res, fd;

    if (!PyArg_ParseTuple(args, "iO&O&:posix_fallocate",
            &fd, _parse_off_t, &offset, _parse_off_t, &len))
        return NULL;

    Py_BEGIN_ALLOW_THREADS
    res = posix_fallocate(fd, offset, len);
    Py_END_ALLOW_THREADS
    if (res != 0) {
        errno = res;
        return posix_error();
    }
    Py_RETURN_NONE;
}
#endif

#ifdef HAVE_POSIX_FADVISE
PyDoc_STRVAR(posix_posix_fadvise__doc__,
"posix_fadvise(fd, offset, len, advice)\n\n\
Announces an intention to access data in a specific pattern thus allowing\n\
the kernel to make optimizations.\n\
The advice applies to the region of the file specified by fd starting at\n\
offset and continuing for len bytes.\n\
advice is one of POSIX_FADV_NORMAL, POSIX_FADV_SEQUENTIAL,\n\
POSIX_FADV_RANDOM, POSIX_FADV_NOREUSE, POSIX_FADV_WILLNEED or\n\
POSIX_FADV_DONTNEED.");

static PyObject *
posix_posix_fadvise(PyObject *self, PyObject *args)
{
    off_t len, offset;
    int res, fd, advice;

    if (!PyArg_ParseTuple(args, "iO&O&i:posix_fadvise",
            &fd, _parse_off_t, &offset, _parse_off_t, &len, &advice))
        return NULL;

    Py_BEGIN_ALLOW_THREADS
    res = posix_fadvise(fd, offset, len, advice);
    Py_END_ALLOW_THREADS
    if (res != 0) {
        errno = res;
        return posix_error();
    }
    Py_RETURN_NONE;
}
#endif

7723
#ifdef HAVE_PUTENV
7724
PyDoc_STRVAR(posix_putenv__doc__,
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Fred Drake committed
7725
"putenv(key, value)\n\n\
7726
Change or add an environment variable.");
7727

7728 7729 7730 7731
/* Save putenv() parameters as values here, so we can collect them when they
 * get re-set with another call for the same key. */
static PyObject *posix_putenv_garbage;

7732
static PyObject *
7733
posix_putenv(PyObject *self, PyObject *args)
7734
{
7735
    PyObject *newstr = NULL;
7736
#ifdef MS_WINDOWS
7737
    PyObject *os1, *os2;
7738
    wchar_t *newenv;
7739

7740
    if (!PyArg_ParseTuple(args,
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Victor Stinner committed
7741
                          "UU:putenv",
7742
                          &os1, &os2))
7743
        return NULL;
7744

7745
    newstr = PyUnicode_FromFormat("%U=%U", os1, os2);
7746 7747 7748 7749
    if (newstr == NULL) {
        PyErr_NoMemory();
        goto error;
    }
7750 7751 7752 7753 7754 7755 7756
    if (_MAX_ENV < PyUnicode_GET_LENGTH(newstr)) {
        PyErr_Format(PyExc_ValueError,
                     "the environment variable is longer than %u characters",
                     _MAX_ENV);
        goto error;
    }

7757
    newenv = PyUnicode_AsUnicode(newstr);
7758 7759
    if (newenv == NULL)
        goto error;
7760 7761
    if (_wputenv(newenv)) {
        posix_error();
7762
        goto error;
7763
    }
7764
#else
7765 7766 7767 7768 7769 7770 7771 7772 7773 7774 7775 7776 7777
    PyObject *os1, *os2;
    char *s1, *s2;
    char *newenv;

    if (!PyArg_ParseTuple(args,
                          "O&O&:putenv",
                          PyUnicode_FSConverter, &os1,
                          PyUnicode_FSConverter, &os2))
        return NULL;
    s1 = PyBytes_AsString(os1);
    s2 = PyBytes_AsString(os2);

    newstr = PyBytes_FromFormat("%s=%s", s1, s2);
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7778 7779 7780 7781 7782
    if (newstr == NULL) {
        PyErr_NoMemory();
        goto error;
    }

7783 7784 7785
    newenv = PyBytes_AS_STRING(newstr);
    if (putenv(newenv)) {
        posix_error();
7786
        goto error;
7787 7788
    }
#endif
7789

7790 7791 7792 7793
    /* Install the first arg and newstr in posix_putenv_garbage;
     * this will cause previous value to be collected.  This has to
     * happen after the real putenv() call because the old value
     * was still accessible until then. */
7794
    if (PyDict_SetItem(posix_putenv_garbage, os1, newstr)) {
7795 7796 7797 7798 7799 7800
        /* really not much we can do; just leak */
        PyErr_Clear();
    }
    else {
        Py_DECREF(newstr);
    }
7801

7802
#ifndef MS_WINDOWS
7803 7804
    Py_DECREF(os1);
    Py_DECREF(os2);
7805
#endif
7806 7807 7808 7809 7810 7811 7812 7813 7814
    Py_RETURN_NONE;

error:
#ifndef MS_WINDOWS
    Py_DECREF(os1);
    Py_DECREF(os2);
#endif
    Py_XDECREF(newstr);
    return NULL;
7815
}
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7816 7817
#endif /* putenv */

7818
#ifdef HAVE_UNSETENV
7819
PyDoc_STRVAR(posix_unsetenv__doc__,
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Fred Drake committed
7820
"unsetenv(key)\n\n\
7821
Delete an environment variable.");
7822 7823 7824 7825

static PyObject *
posix_unsetenv(PyObject *self, PyObject *args)
{
7826
    PyObject *name;
7827
#ifndef HAVE_BROKEN_UNSETENV
7828
    int err;
7829
#endif
7830 7831

    if (!PyArg_ParseTuple(args, "O&:unsetenv",
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Benjamin Peterson committed
7832

7833
                          PyUnicode_FSConverter, &name))
7834
        return NULL;
7835

7836 7837 7838
#ifdef HAVE_BROKEN_UNSETENV
    unsetenv(PyBytes_AS_STRING(name));
#else
7839
    err = unsetenv(PyBytes_AS_STRING(name));
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Benjamin Peterson committed
7840 7841
    if (err) {
        Py_DECREF(name);
7842
        return posix_error();
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7843
    }
7844
#endif
7845 7846 7847 7848 7849 7850

    /* Remove the key from posix_putenv_garbage;
     * this will cause it to be collected.  This has to
     * happen after the real unsetenv() call because the
     * old value was still accessible until then.
     */
7851
    if (PyDict_DelItem(posix_putenv_garbage, name)) {
7852 7853 7854
        /* really not much we can do; just leak */
        PyErr_Clear();
    }
7855
    Py_DECREF(name);
7856
    Py_RETURN_NONE;
7857 7858 7859
}
#endif /* unsetenv */

7860
PyDoc_STRVAR(posix_strerror__doc__,
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Fred Drake committed
7861
"strerror(code) -> string\n\n\
7862
Translate an error code to a message string.");
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7863

7864
static PyObject *
7865
posix_strerror(PyObject *self, PyObject *args)
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7866
{
7867 7868 7869 7870 7871 7872 7873 7874 7875 7876
    int code;
    char *message;
    if (!PyArg_ParseTuple(args, "i:strerror", &code))
        return NULL;
    message = strerror(code);
    if (message == NULL) {
        PyErr_SetString(PyExc_ValueError,
                        "strerror() argument out of range");
        return NULL;
    }
7877
    return PyUnicode_DecodeLocale(message, "surrogateescape");
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}

7880

7881 7882
#ifdef HAVE_SYS_WAIT_H

7883
#ifdef WCOREDUMP
7884
PyDoc_STRVAR(posix_WCOREDUMP__doc__,
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7885
"WCOREDUMP(status) -> bool\n\n\
7886
Return True if the process returning 'status' was dumped to a core file.");
7887 7888 7889 7890

static PyObject *
posix_WCOREDUMP(PyObject *self, PyObject *args)
{
7891 7892
    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
7893

7894 7895
    if (!PyArg_ParseTuple(args, "i:WCOREDUMP", &WAIT_STATUS_INT(status)))
        return NULL;
7896

7897
    return PyBool_FromLong(WCOREDUMP(status));
7898 7899 7900 7901
}
#endif /* WCOREDUMP */

#ifdef WIFCONTINUED
7902
PyDoc_STRVAR(posix_WIFCONTINUED__doc__,
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Fred Drake committed
7903
"WIFCONTINUED(status) -> bool\n\n\
7904
Return True if the process returning 'status' was continued from a\n\
7905
job control stop.");
7906 7907

static PyObject *
7908
posix_WIFCONTINUED(PyObject *self, PyObject *args)
7909
{
7910 7911
    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
7912

7913 7914
    if (!PyArg_ParseTuple(args, "i:WCONTINUED", &WAIT_STATUS_INT(status)))
        return NULL;
7915

7916
    return PyBool_FromLong(WIFCONTINUED(status));
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}
#endif /* WIFCONTINUED */

7920
#ifdef WIFSTOPPED
7921
PyDoc_STRVAR(posix_WIFSTOPPED__doc__,
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7922
"WIFSTOPPED(status) -> bool\n\n\
7923
Return True if the process returning 'status' was stopped.");
7924 7925

static PyObject *
7926
posix_WIFSTOPPED(PyObject *self, PyObject *args)
7927
{
7928 7929
    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
7930

7931 7932
    if (!PyArg_ParseTuple(args, "i:WIFSTOPPED", &WAIT_STATUS_INT(status)))
        return NULL;
7933

7934
    return PyBool_FromLong(WIFSTOPPED(status));
7935 7936 7937 7938
}
#endif /* WIFSTOPPED */

#ifdef WIFSIGNALED
7939
PyDoc_STRVAR(posix_WIFSIGNALED__doc__,
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Fred Drake committed
7940
"WIFSIGNALED(status) -> bool\n\n\
7941
Return True if the process returning 'status' was terminated by a signal.");
7942 7943

static PyObject *
7944
posix_WIFSIGNALED(PyObject *self, PyObject *args)
7945
{
7946 7947
    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
7948

7949 7950
    if (!PyArg_ParseTuple(args, "i:WIFSIGNALED", &WAIT_STATUS_INT(status)))
        return NULL;
7951

7952
    return PyBool_FromLong(WIFSIGNALED(status));
7953 7954 7955 7956
}
#endif /* WIFSIGNALED */

#ifdef WIFEXITED
7957
PyDoc_STRVAR(posix_WIFEXITED__doc__,
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7958
"WIFEXITED(status) -> bool\n\n\
7959
Return true if the process returning 'status' exited using the exit()\n\
7960
system call.");
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static PyObject *
7963
posix_WIFEXITED(PyObject *self, PyObject *args)
7964
{
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    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
7967

7968 7969
    if (!PyArg_ParseTuple(args, "i:WIFEXITED", &WAIT_STATUS_INT(status)))
        return NULL;
7970

7971
    return PyBool_FromLong(WIFEXITED(status));
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}
#endif /* WIFEXITED */

7975
#ifdef WEXITSTATUS
7976
PyDoc_STRVAR(posix_WEXITSTATUS__doc__,
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"WEXITSTATUS(status) -> integer\n\n\
7978
Return the process return code from 'status'.");
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static PyObject *
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posix_WEXITSTATUS(PyObject *self, PyObject *args)
7982
{
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    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
7985

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    if (!PyArg_ParseTuple(args, "i:WEXITSTATUS", &WAIT_STATUS_INT(status)))
        return NULL;
7988

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    return Py_BuildValue("i", WEXITSTATUS(status));
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}
#endif /* WEXITSTATUS */

#ifdef WTERMSIG
7994
PyDoc_STRVAR(posix_WTERMSIG__doc__,
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"WTERMSIG(status) -> integer\n\n\
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Return the signal that terminated the process that provided the 'status'\n\
7997
value.");
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static PyObject *
8000
posix_WTERMSIG(PyObject *self, PyObject *args)
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{
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    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
8004

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    if (!PyArg_ParseTuple(args, "i:WTERMSIG", &WAIT_STATUS_INT(status)))
        return NULL;
8007

8008
    return Py_BuildValue("i", WTERMSIG(status));
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}
#endif /* WTERMSIG */

#ifdef WSTOPSIG
8013
PyDoc_STRVAR(posix_WSTOPSIG__doc__,
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"WSTOPSIG(status) -> integer\n\n\
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Return the signal that stopped the process that provided\n\
the 'status' value.");
8017 8018

static PyObject *
8019
posix_WSTOPSIG(PyObject *self, PyObject *args)
8020
{
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    WAIT_TYPE status;
    WAIT_STATUS_INT(status) = 0;
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    if (!PyArg_ParseTuple(args, "i:WSTOPSIG", &WAIT_STATUS_INT(status)))
        return NULL;
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8027
    return Py_BuildValue("i", WSTOPSIG(status));
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}
#endif /* WSTOPSIG */

#endif /* HAVE_SYS_WAIT_H */


8034
#if defined(HAVE_FSTATVFS) && defined(HAVE_SYS_STATVFS_H)
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#ifdef _SCO_DS
/* SCO OpenServer 5.0 and later requires _SVID3 before it reveals the
   needed definitions in sys/statvfs.h */
#define _SVID3
#endif
8040 8041
#include <sys/statvfs.h>

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static PyObject*
_pystatvfs_fromstructstatvfs(struct statvfs st) {
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    PyObject *v = PyStructSequence_New(&StatVFSResultType);
    if (v == NULL)
        return NULL;
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#if !defined(HAVE_LARGEFILE_SUPPORT)
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    PyStructSequence_SET_ITEM(v, 0, PyLong_FromLong((long) st.f_bsize));
    PyStructSequence_SET_ITEM(v, 1, PyLong_FromLong((long) st.f_frsize));
    PyStructSequence_SET_ITEM(v, 2, PyLong_FromLong((long) st.f_blocks));
    PyStructSequence_SET_ITEM(v, 3, PyLong_FromLong((long) st.f_bfree));
    PyStructSequence_SET_ITEM(v, 4, PyLong_FromLong((long) st.f_bavail));
    PyStructSequence_SET_ITEM(v, 5, PyLong_FromLong((long) st.f_files));
    PyStructSequence_SET_ITEM(v, 6, PyLong_FromLong((long) st.f_ffree));
    PyStructSequence_SET_ITEM(v, 7, PyLong_FromLong((long) st.f_favail));
    PyStructSequence_SET_ITEM(v, 8, PyLong_FromLong((long) st.f_flag));
    PyStructSequence_SET_ITEM(v, 9, PyLong_FromLong((long) st.f_namemax));
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#else
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    PyStructSequence_SET_ITEM(v, 0, PyLong_FromLong((long) st.f_bsize));
    PyStructSequence_SET_ITEM(v, 1, PyLong_FromLong((long) st.f_frsize));
    PyStructSequence_SET_ITEM(v, 2,
                              PyLong_FromLongLong((PY_LONG_LONG) st.f_blocks));
    PyStructSequence_SET_ITEM(v, 3,
                              PyLong_FromLongLong((PY_LONG_LONG) st.f_bfree));
    PyStructSequence_SET_ITEM(v, 4,
                              PyLong_FromLongLong((PY_LONG_LONG) st.f_bavail));
    PyStructSequence_SET_ITEM(v, 5,
                              PyLong_FromLongLong((PY_LONG_LONG) st.f_files));
    PyStructSequence_SET_ITEM(v, 6,
                              PyLong_FromLongLong((PY_LONG_LONG) st.f_ffree));
    PyStructSequence_SET_ITEM(v, 7,
                              PyLong_FromLongLong((PY_LONG_LONG) st.f_favail));
    PyStructSequence_SET_ITEM(v, 8, PyLong_FromLong((long) st.f_flag));
    PyStructSequence_SET_ITEM(v, 9, PyLong_FromLong((long) st.f_namemax));
#endif

    return v;
8079 8080
}

8081
PyDoc_STRVAR(posix_fstatvfs__doc__,
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8082
"fstatvfs(fd) -> statvfs result\n\n\
8083
Perform an fstatvfs system call on the given fd.");
8084 8085

static PyObject *
8086
posix_fstatvfs(PyObject *self, PyObject *args)
8087
{
8088 8089
    int fd, res;
    struct statvfs st;
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    if (!PyArg_ParseTuple(args, "i:fstatvfs", &fd))
        return NULL;
    Py_BEGIN_ALLOW_THREADS
    res = fstatvfs(fd, &st);
    Py_END_ALLOW_THREADS
    if (res != 0)
        return posix_error();
8098

8099
    return _pystatvfs_fromstructstatvfs(st);
8100
}
8101
#endif /* HAVE_FSTATVFS && HAVE_SYS_STATVFS_H */
8102 8103


8104
#if defined(HAVE_STATVFS) && defined(HAVE_SYS_STATVFS_H)
8105 8106
#include <sys/statvfs.h>

8107
PyDoc_STRVAR(posix_statvfs__doc__,
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8108
"statvfs(path) -> statvfs result\n\n\
8109
Perform a statvfs system call on the given path.");
8110 8111

static PyObject *
8112
posix_statvfs(PyObject *self, PyObject *args)
8113
{
8114
    PyObject *path;
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    int res;
    struct statvfs st;
8117
    if (!PyArg_ParseTuple(args, "O&:statvfs", PyUnicode_FSConverter, &path))
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        return NULL;
    Py_BEGIN_ALLOW_THREADS
8120
    res = statvfs(PyBytes_AS_STRING(path), &st);
8121
    Py_END_ALLOW_THREADS
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    if (res != 0) {
        posix_error_with_filename(PyBytes_AS_STRING(path));
        Py_DECREF(path);
        return NULL;
    }
    Py_DECREF(path);
8128

8129
    return _pystatvfs_fromstructstatvfs(st);
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}
#endif /* HAVE_STATVFS */

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#ifdef MS_WINDOWS
PyDoc_STRVAR(win32__getdiskusage__doc__,
"_getdiskusage(path) -> (total, free)\n\n\
Return disk usage statistics about the given path as (total, free) tuple.");

static PyObject *
win32__getdiskusage(PyObject *self, PyObject *args)
{
    BOOL retval;
    ULARGE_INTEGER _, total, free;
8143
    const wchar_t *path;
8144

8145
    if (! PyArg_ParseTuple(args, "u", &path))
8146 8147 8148
        return NULL;

    Py_BEGIN_ALLOW_THREADS
8149
    retval = GetDiskFreeSpaceExW(path, &_, &total, &free);
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    Py_END_ALLOW_THREADS
    if (retval == 0)
        return PyErr_SetFromWindowsErr(0);

    return Py_BuildValue("(LL)", total.QuadPart, free.QuadPart);
}
#endif


8159 8160 8161
/* This is used for fpathconf(), pathconf(), confstr() and sysconf().
 * It maps strings representing configuration variable names to
 * integer values, allowing those functions to be called with the
8162
 * magic names instead of polluting the module's namespace with tons of
8163 8164
 * rarely-used constants.  There are three separate tables that use
 * these definitions.
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 *
 * This code is always included, even if none of the interfaces that
 * need it are included.  The #if hackery needed to avoid it would be
 * sufficiently pervasive that it's not worth the loss of readability.
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 */
struct constdef {
    char *name;
    long value;
};

8175
static int
8176
conv_confname(PyObject *arg, int *valuep, struct constdef *table,
8177
              size_t tablesize)
8178
{
8179
    if (PyLong_Check(arg)) {
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        *valuep = PyLong_AS_LONG(arg);
        return 1;
8182
    }
8183
    else {
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        /* look up the value in the table using a binary search */
        size_t lo = 0;
        size_t mid;
        size_t hi = tablesize;
        int cmp;
        const char *confname;
        if (!PyUnicode_Check(arg)) {
            PyErr_SetString(PyExc_TypeError,
                "configuration names must be strings or integers");
            return 0;
8194
        }
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        confname = _PyUnicode_AsString(arg);
        if (confname == NULL)
            return 0;
        while (lo < hi) {
            mid = (lo + hi) / 2;
            cmp = strcmp(confname, table[mid].name);
            if (cmp < 0)
                hi = mid;
            else if (cmp > 0)
                lo = mid + 1;
            else {
                *valuep = table[mid].value;
                return 1;
            }
        }
        PyErr_SetString(PyExc_ValueError, "unrecognized configuration name");
        return 0;
8212
    }
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}


#if defined(HAVE_FPATHCONF) || defined(HAVE_PATHCONF)
static struct constdef  posix_constants_pathconf[] = {
8218
#ifdef _PC_ABI_AIO_XFER_MAX
8219
    {"PC_ABI_AIO_XFER_MAX",     _PC_ABI_AIO_XFER_MAX},
8220 8221
#endif
#ifdef _PC_ABI_ASYNC_IO
8222
    {"PC_ABI_ASYNC_IO", _PC_ABI_ASYNC_IO},
8223
#endif
8224
#ifdef _PC_ASYNC_IO
8225
    {"PC_ASYNC_IO",     _PC_ASYNC_IO},
8226 8227
#endif
#ifdef _PC_CHOWN_RESTRICTED
8228
    {"PC_CHOWN_RESTRICTED",     _PC_CHOWN_RESTRICTED},
8229 8230
#endif
#ifdef _PC_FILESIZEBITS
8231
    {"PC_FILESIZEBITS", _PC_FILESIZEBITS},
8232 8233
#endif
#ifdef _PC_LAST
8234
    {"PC_LAST", _PC_LAST},
8235 8236
#endif
#ifdef _PC_LINK_MAX
8237
    {"PC_LINK_MAX",     _PC_LINK_MAX},
8238 8239
#endif
#ifdef _PC_MAX_CANON
8240
    {"PC_MAX_CANON",    _PC_MAX_CANON},
8241 8242
#endif
#ifdef _PC_MAX_INPUT
8243
    {"PC_MAX_INPUT",    _PC_MAX_INPUT},
8244 8245
#endif
#ifdef _PC_NAME_MAX
8246
    {"PC_NAME_MAX",     _PC_NAME_MAX},
8247 8248
#endif
#ifdef _PC_NO_TRUNC
8249
    {"PC_NO_TRUNC",     _PC_NO_TRUNC},
8250 8251
#endif
#ifdef _PC_PATH_MAX
8252
    {"PC_PATH_MAX",     _PC_PATH_MAX},
8253 8254
#endif
#ifdef _PC_PIPE_BUF
8255
    {"PC_PIPE_BUF",     _PC_PIPE_BUF},
8256 8257
#endif
#ifdef _PC_PRIO_IO
8258
    {"PC_PRIO_IO",      _PC_PRIO_IO},
8259 8260
#endif
#ifdef _PC_SOCK_MAXBUF
8261
    {"PC_SOCK_MAXBUF",  _PC_SOCK_MAXBUF},
8262 8263
#endif
#ifdef _PC_SYNC_IO
8264
    {"PC_SYNC_IO",      _PC_SYNC_IO},
8265 8266
#endif
#ifdef _PC_VDISABLE
8267
    {"PC_VDISABLE",     _PC_VDISABLE},
8268
#endif
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#ifdef _PC_ACL_ENABLED
    {"PC_ACL_ENABLED",  _PC_ACL_ENABLED},
#endif
#ifdef _PC_MIN_HOLE_SIZE
    {"PC_MIN_HOLE_SIZE",    _PC_MIN_HOLE_SIZE},
#endif
#ifdef _PC_ALLOC_SIZE_MIN
    {"PC_ALLOC_SIZE_MIN",   _PC_ALLOC_SIZE_MIN},
#endif
#ifdef _PC_REC_INCR_XFER_SIZE
    {"PC_REC_INCR_XFER_SIZE",   _PC_REC_INCR_XFER_SIZE},
#endif
#ifdef _PC_REC_MAX_XFER_SIZE
    {"PC_REC_MAX_XFER_SIZE",    _PC_REC_MAX_XFER_SIZE},
#endif
#ifdef _PC_REC_MIN_XFER_SIZE
    {"PC_REC_MIN_XFER_SIZE",    _PC_REC_MIN_XFER_SIZE},
#endif
#ifdef _PC_REC_XFER_ALIGN
    {"PC_REC_XFER_ALIGN",   _PC_REC_XFER_ALIGN},
#endif
#ifdef _PC_SYMLINK_MAX
    {"PC_SYMLINK_MAX",  _PC_SYMLINK_MAX},
#endif
#ifdef _PC_XATTR_ENABLED
    {"PC_XATTR_ENABLED",    _PC_XATTR_ENABLED},
#endif
#ifdef _PC_XATTR_EXISTS
    {"PC_XATTR_EXISTS", _PC_XATTR_EXISTS},
#endif
#ifdef _PC_TIMESTAMP_RESOLUTION
    {"PC_TIMESTAMP_RESOLUTION", _PC_TIMESTAMP_RESOLUTION},
#endif
8302 8303 8304
};

static int
8305
conv_path_confname(PyObject *arg, int *valuep)
8306 8307 8308 8309 8310 8311 8312 8313
{
    return conv_confname(arg, valuep, posix_constants_pathconf,
                         sizeof(posix_constants_pathconf)
                           / sizeof(struct constdef));
}
#endif

#ifdef HAVE_FPATHCONF
8314
PyDoc_STRVAR(posix_fpathconf__doc__,
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8315
"fpathconf(fd, name) -> integer\n\n\
8316
Return the configuration limit name for the file descriptor fd.\n\
8317
If there is no limit, return -1.");
8318 8319

static PyObject *
8320
posix_fpathconf(PyObject *self, PyObject *args)
8321 8322 8323 8324
{
    PyObject *result = NULL;
    int name, fd;

8325 8326
    if (PyArg_ParseTuple(args, "iO&:fpathconf", &fd,
                         conv_path_confname, &name)) {
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8327
        long limit;
8328

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        errno = 0;
        limit = fpathconf(fd, name);
        if (limit == -1 && errno != 0)
            posix_error();
        else
            result = PyLong_FromLong(limit);
8335 8336 8337 8338 8339 8340 8341
    }
    return result;
}
#endif


#ifdef HAVE_PATHCONF
8342
PyDoc_STRVAR(posix_pathconf__doc__,
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8343
"pathconf(path, name) -> integer\n\n\
8344
Return the configuration limit name for the file or directory path.\n\
8345
If there is no limit, return -1.");
8346 8347

static PyObject *
8348
posix_pathconf(PyObject *self, PyObject *args)
8349 8350 8351 8352 8353 8354 8355
{
    PyObject *result = NULL;
    int name;
    char *path;

    if (PyArg_ParseTuple(args, "sO&:pathconf", &path,
                         conv_path_confname, &name)) {
8356 8357 8358 8359 8360 8361
    long limit;

    errno = 0;
    limit = pathconf(path, name);
    if (limit == -1 && errno != 0) {
        if (errno == EINVAL)
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            /* could be a path or name problem */
            posix_error();
8364
        else
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8365
            posix_error_with_filename(path);
8366 8367 8368
    }
    else
        result = PyLong_FromLong(limit);
8369 8370 8371 8372 8373 8374 8375
    }
    return result;
}
#endif

#ifdef HAVE_CONFSTR
static struct constdef posix_constants_confstr[] = {
8376
#ifdef _CS_ARCHITECTURE
8377
    {"CS_ARCHITECTURE", _CS_ARCHITECTURE},
8378
#endif
8379
#ifdef _CS_GNU_LIBC_VERSION
8380
    {"CS_GNU_LIBC_VERSION",     _CS_GNU_LIBC_VERSION},
8381 8382
#endif
#ifdef _CS_GNU_LIBPTHREAD_VERSION
8383
    {"CS_GNU_LIBPTHREAD_VERSION",       _CS_GNU_LIBPTHREAD_VERSION},
8384
#endif
8385
#ifdef _CS_HOSTNAME
8386
    {"CS_HOSTNAME",     _CS_HOSTNAME},
8387 8388
#endif
#ifdef _CS_HW_PROVIDER
8389
    {"CS_HW_PROVIDER",  _CS_HW_PROVIDER},
8390 8391
#endif
#ifdef _CS_HW_SERIAL
8392
    {"CS_HW_SERIAL",    _CS_HW_SERIAL},
8393 8394
#endif
#ifdef _CS_INITTAB_NAME
8395
    {"CS_INITTAB_NAME", _CS_INITTAB_NAME},
8396
#endif
8397
#ifdef _CS_LFS64_CFLAGS
8398
    {"CS_LFS64_CFLAGS", _CS_LFS64_CFLAGS},
8399 8400
#endif
#ifdef _CS_LFS64_LDFLAGS
8401
    {"CS_LFS64_LDFLAGS",        _CS_LFS64_LDFLAGS},
8402 8403
#endif
#ifdef _CS_LFS64_LIBS
8404
    {"CS_LFS64_LIBS",   _CS_LFS64_LIBS},
8405 8406
#endif
#ifdef _CS_LFS64_LINTFLAGS
8407
    {"CS_LFS64_LINTFLAGS",      _CS_LFS64_LINTFLAGS},
8408 8409
#endif
#ifdef _CS_LFS_CFLAGS
8410
    {"CS_LFS_CFLAGS",   _CS_LFS_CFLAGS},
8411 8412
#endif
#ifdef _CS_LFS_LDFLAGS
8413
    {"CS_LFS_LDFLAGS",  _CS_LFS_LDFLAGS},
8414 8415
#endif
#ifdef _CS_LFS_LIBS
8416
    {"CS_LFS_LIBS",     _CS_LFS_LIBS},
8417 8418
#endif
#ifdef _CS_LFS_LINTFLAGS
8419
    {"CS_LFS_LINTFLAGS",        _CS_LFS_LINTFLAGS},
8420
#endif
8421
#ifdef _CS_MACHINE
8422
    {"CS_MACHINE",      _CS_MACHINE},
8423
#endif
8424
#ifdef _CS_PATH
8425
    {"CS_PATH", _CS_PATH},
8426
#endif
8427
#ifdef _CS_RELEASE
8428
    {"CS_RELEASE",      _CS_RELEASE},
8429 8430
#endif
#ifdef _CS_SRPC_DOMAIN
8431
    {"CS_SRPC_DOMAIN",  _CS_SRPC_DOMAIN},
8432 8433
#endif
#ifdef _CS_SYSNAME
8434
    {"CS_SYSNAME",      _CS_SYSNAME},
8435 8436
#endif
#ifdef _CS_VERSION
8437
    {"CS_VERSION",      _CS_VERSION},
8438
#endif
8439
#ifdef _CS_XBS5_ILP32_OFF32_CFLAGS
8440
    {"CS_XBS5_ILP32_OFF32_CFLAGS",      _CS_XBS5_ILP32_OFF32_CFLAGS},
8441 8442
#endif
#ifdef _CS_XBS5_ILP32_OFF32_LDFLAGS
8443
    {"CS_XBS5_ILP32_OFF32_LDFLAGS",     _CS_XBS5_ILP32_OFF32_LDFLAGS},
8444 8445
#endif
#ifdef _CS_XBS5_ILP32_OFF32_LIBS
8446
    {"CS_XBS5_ILP32_OFF32_LIBS",        _CS_XBS5_ILP32_OFF32_LIBS},
8447 8448
#endif
#ifdef _CS_XBS5_ILP32_OFF32_LINTFLAGS
8449
    {"CS_XBS5_ILP32_OFF32_LINTFLAGS",   _CS_XBS5_ILP32_OFF32_LINTFLAGS},
8450 8451
#endif
#ifdef _CS_XBS5_ILP32_OFFBIG_CFLAGS
8452
    {"CS_XBS5_ILP32_OFFBIG_CFLAGS",     _CS_XBS5_ILP32_OFFBIG_CFLAGS},
8453 8454
#endif
#ifdef _CS_XBS5_ILP32_OFFBIG_LDFLAGS
8455
    {"CS_XBS5_ILP32_OFFBIG_LDFLAGS",    _CS_XBS5_ILP32_OFFBIG_LDFLAGS},
8456 8457
#endif
#ifdef _CS_XBS5_ILP32_OFFBIG_LIBS
8458
    {"CS_XBS5_ILP32_OFFBIG_LIBS",       _CS_XBS5_ILP32_OFFBIG_LIBS},
8459 8460
#endif
#ifdef _CS_XBS5_ILP32_OFFBIG_LINTFLAGS
8461
    {"CS_XBS5_ILP32_OFFBIG_LINTFLAGS",  _CS_XBS5_ILP32_OFFBIG_LINTFLAGS},
8462 8463
#endif
#ifdef _CS_XBS5_LP64_OFF64_CFLAGS
8464
    {"CS_XBS5_LP64_OFF64_CFLAGS",       _CS_XBS5_LP64_OFF64_CFLAGS},
8465 8466
#endif
#ifdef _CS_XBS5_LP64_OFF64_LDFLAGS
8467
    {"CS_XBS5_LP64_OFF64_LDFLAGS",      _CS_XBS5_LP64_OFF64_LDFLAGS},
8468 8469
#endif
#ifdef _CS_XBS5_LP64_OFF64_LIBS
8470
    {"CS_XBS5_LP64_OFF64_LIBS", _CS_XBS5_LP64_OFF64_LIBS},
8471 8472
#endif
#ifdef _CS_XBS5_LP64_OFF64_LINTFLAGS
8473
    {"CS_XBS5_LP64_OFF64_LINTFLAGS",    _CS_XBS5_LP64_OFF64_LINTFLAGS},
8474 8475
#endif
#ifdef _CS_XBS5_LPBIG_OFFBIG_CFLAGS
8476
    {"CS_XBS5_LPBIG_OFFBIG_CFLAGS",     _CS_XBS5_LPBIG_OFFBIG_CFLAGS},
8477 8478
#endif
#ifdef _CS_XBS5_LPBIG_OFFBIG_LDFLAGS
8479
    {"CS_XBS5_LPBIG_OFFBIG_LDFLAGS",    _CS_XBS5_LPBIG_OFFBIG_LDFLAGS},
8480 8481
#endif
#ifdef _CS_XBS5_LPBIG_OFFBIG_LIBS
8482
    {"CS_XBS5_LPBIG_OFFBIG_LIBS",       _CS_XBS5_LPBIG_OFFBIG_LIBS},
8483 8484
#endif
#ifdef _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS
8485
    {"CS_XBS5_LPBIG_OFFBIG_LINTFLAGS",  _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS},
8486
#endif
8487
#ifdef _MIPS_CS_AVAIL_PROCESSORS
8488
    {"MIPS_CS_AVAIL_PROCESSORS",        _MIPS_CS_AVAIL_PROCESSORS},
8489 8490
#endif
#ifdef _MIPS_CS_BASE
8491
    {"MIPS_CS_BASE",    _MIPS_CS_BASE},
8492 8493
#endif
#ifdef _MIPS_CS_HOSTID
8494
    {"MIPS_CS_HOSTID",  _MIPS_CS_HOSTID},
8495 8496
#endif
#ifdef _MIPS_CS_HW_NAME
8497
    {"MIPS_CS_HW_NAME", _MIPS_CS_HW_NAME},
8498 8499
#endif
#ifdef _MIPS_CS_NUM_PROCESSORS
8500
    {"MIPS_CS_NUM_PROCESSORS",  _MIPS_CS_NUM_PROCESSORS},
8501 8502
#endif
#ifdef _MIPS_CS_OSREL_MAJ
8503
    {"MIPS_CS_OSREL_MAJ",       _MIPS_CS_OSREL_MAJ},
8504 8505
#endif
#ifdef _MIPS_CS_OSREL_MIN
8506
    {"MIPS_CS_OSREL_MIN",       _MIPS_CS_OSREL_MIN},
8507 8508
#endif
#ifdef _MIPS_CS_OSREL_PATCH
8509
    {"MIPS_CS_OSREL_PATCH",     _MIPS_CS_OSREL_PATCH},
8510 8511
#endif
#ifdef _MIPS_CS_OS_NAME
8512
    {"MIPS_CS_OS_NAME", _MIPS_CS_OS_NAME},
8513 8514
#endif
#ifdef _MIPS_CS_OS_PROVIDER
8515
    {"MIPS_CS_OS_PROVIDER",     _MIPS_CS_OS_PROVIDER},
8516 8517
#endif
#ifdef _MIPS_CS_PROCESSORS
8518
    {"MIPS_CS_PROCESSORS",      _MIPS_CS_PROCESSORS},
8519 8520
#endif
#ifdef _MIPS_CS_SERIAL
8521
    {"MIPS_CS_SERIAL",  _MIPS_CS_SERIAL},
8522 8523
#endif
#ifdef _MIPS_CS_VENDOR
8524
    {"MIPS_CS_VENDOR",  _MIPS_CS_VENDOR},
8525
#endif
8526 8527 8528
};

static int
8529
conv_confstr_confname(PyObject *arg, int *valuep)
8530 8531 8532 8533 8534 8535
{
    return conv_confname(arg, valuep, posix_constants_confstr,
                         sizeof(posix_constants_confstr)
                           / sizeof(struct constdef));
}

8536
PyDoc_STRVAR(posix_confstr__doc__,
Fred Drake's avatar
Fred Drake committed
8537
"confstr(name) -> string\n\n\
8538
Return a string-valued system configuration variable.");
8539 8540

static PyObject *
8541
posix_confstr(PyObject *self, PyObject *args)
8542 8543 8544
{
    PyObject *result = NULL;
    int name;
8545
    char buffer[255];
Stefan Krah's avatar
Stefan Krah committed
8546
    int len;
8547

8548 8549 8550 8551 8552 8553 8554 8555 8556
    if (!PyArg_ParseTuple(args, "O&:confstr", conv_confstr_confname, &name))
        return NULL;

    errno = 0;
    len = confstr(name, buffer, sizeof(buffer));
    if (len == 0) {
        if (errno) {
            posix_error();
            return NULL;
8557 8558
        }
        else {
8559
            Py_RETURN_NONE;
8560 8561
        }
    }
8562 8563 8564 8565 8566 8567 8568 8569 8570 8571 8572

    if ((unsigned int)len >= sizeof(buffer)) {
        char *buf = PyMem_Malloc(len);
        if (buf == NULL)
            return PyErr_NoMemory();
        confstr(name, buf, len);
        result = PyUnicode_DecodeFSDefaultAndSize(buf, len-1);
        PyMem_Free(buf);
    }
    else
        result = PyUnicode_DecodeFSDefaultAndSize(buffer, len-1);
8573 8574 8575 8576 8577 8578 8579 8580
    return result;
}
#endif


#ifdef HAVE_SYSCONF
static struct constdef posix_constants_sysconf[] = {
#ifdef _SC_2_CHAR_TERM
8581
    {"SC_2_CHAR_TERM",  _SC_2_CHAR_TERM},
8582 8583
#endif
#ifdef _SC_2_C_BIND
8584
    {"SC_2_C_BIND",     _SC_2_C_BIND},
8585 8586
#endif
#ifdef _SC_2_C_DEV
8587
    {"SC_2_C_DEV",      _SC_2_C_DEV},
8588 8589
#endif
#ifdef _SC_2_C_VERSION
8590
    {"SC_2_C_VERSION",  _SC_2_C_VERSION},
8591 8592
#endif
#ifdef _SC_2_FORT_DEV
8593
    {"SC_2_FORT_DEV",   _SC_2_FORT_DEV},
8594 8595
#endif
#ifdef _SC_2_FORT_RUN
8596
    {"SC_2_FORT_RUN",   _SC_2_FORT_RUN},
8597 8598
#endif
#ifdef _SC_2_LOCALEDEF
8599
    {"SC_2_LOCALEDEF",  _SC_2_LOCALEDEF},
8600 8601
#endif
#ifdef _SC_2_SW_DEV
8602
    {"SC_2_SW_DEV",     _SC_2_SW_DEV},
8603 8604
#endif
#ifdef _SC_2_UPE
8605
    {"SC_2_UPE",        _SC_2_UPE},
8606 8607
#endif
#ifdef _SC_2_VERSION
8608
    {"SC_2_VERSION",    _SC_2_VERSION},
8609
#endif
8610
#ifdef _SC_ABI_ASYNCHRONOUS_IO
8611
    {"SC_ABI_ASYNCHRONOUS_IO",  _SC_ABI_ASYNCHRONOUS_IO},
8612 8613
#endif
#ifdef _SC_ACL
8614
    {"SC_ACL",  _SC_ACL},
8615
#endif
8616
#ifdef _SC_AIO_LISTIO_MAX
8617
    {"SC_AIO_LISTIO_MAX",       _SC_AIO_LISTIO_MAX},
8618 8619
#endif
#ifdef _SC_AIO_MAX
8620
    {"SC_AIO_MAX",      _SC_AIO_MAX},
8621 8622
#endif
#ifdef _SC_AIO_PRIO_DELTA_MAX
8623
    {"SC_AIO_PRIO_DELTA_MAX",   _SC_AIO_PRIO_DELTA_MAX},
8624 8625
#endif
#ifdef _SC_ARG_MAX
8626
    {"SC_ARG_MAX",      _SC_ARG_MAX},
8627 8628
#endif
#ifdef _SC_ASYNCHRONOUS_IO
8629
    {"SC_ASYNCHRONOUS_IO",      _SC_ASYNCHRONOUS_IO},
8630 8631
#endif
#ifdef _SC_ATEXIT_MAX
8632
    {"SC_ATEXIT_MAX",   _SC_ATEXIT_MAX},
8633
#endif
8634
#ifdef _SC_AUDIT
8635
    {"SC_AUDIT",        _SC_AUDIT},
8636
#endif
8637
#ifdef _SC_AVPHYS_PAGES
8638
    {"SC_AVPHYS_PAGES", _SC_AVPHYS_PAGES},
8639 8640
#endif
#ifdef _SC_BC_BASE_MAX
8641
    {"SC_BC_BASE_MAX",  _SC_BC_BASE_MAX},
8642 8643
#endif
#ifdef _SC_BC_DIM_MAX
8644
    {"SC_BC_DIM_MAX",   _SC_BC_DIM_MAX},
8645 8646
#endif
#ifdef _SC_BC_SCALE_MAX
8647
    {"SC_BC_SCALE_MAX", _SC_BC_SCALE_MAX},
8648 8649
#endif
#ifdef _SC_BC_STRING_MAX
8650
    {"SC_BC_STRING_MAX",        _SC_BC_STRING_MAX},
8651
#endif
8652
#ifdef _SC_CAP
8653
    {"SC_CAP",  _SC_CAP},
8654
#endif
8655
#ifdef _SC_CHARCLASS_NAME_MAX
8656
    {"SC_CHARCLASS_NAME_MAX",   _SC_CHARCLASS_NAME_MAX},
8657 8658
#endif
#ifdef _SC_CHAR_BIT
8659
    {"SC_CHAR_BIT",     _SC_CHAR_BIT},
8660 8661
#endif
#ifdef _SC_CHAR_MAX
8662
    {"SC_CHAR_MAX",     _SC_CHAR_MAX},
8663 8664
#endif
#ifdef _SC_CHAR_MIN
8665
    {"SC_CHAR_MIN",     _SC_CHAR_MIN},
8666 8667
#endif
#ifdef _SC_CHILD_MAX
8668
    {"SC_CHILD_MAX",    _SC_CHILD_MAX},
8669 8670
#endif
#ifdef _SC_CLK_TCK
8671
    {"SC_CLK_TCK",      _SC_CLK_TCK},
8672 8673
#endif
#ifdef _SC_COHER_BLKSZ
8674
    {"SC_COHER_BLKSZ",  _SC_COHER_BLKSZ},
8675 8676
#endif
#ifdef _SC_COLL_WEIGHTS_MAX
8677
    {"SC_COLL_WEIGHTS_MAX",     _SC_COLL_WEIGHTS_MAX},
8678 8679
#endif
#ifdef _SC_DCACHE_ASSOC
8680
    {"SC_DCACHE_ASSOC", _SC_DCACHE_ASSOC},
8681 8682
#endif
#ifdef _SC_DCACHE_BLKSZ
8683
    {"SC_DCACHE_BLKSZ", _SC_DCACHE_BLKSZ},
8684 8685
#endif
#ifdef _SC_DCACHE_LINESZ
8686
    {"SC_DCACHE_LINESZ",        _SC_DCACHE_LINESZ},
8687 8688
#endif
#ifdef _SC_DCACHE_SZ
8689
    {"SC_DCACHE_SZ",    _SC_DCACHE_SZ},
8690 8691
#endif
#ifdef _SC_DCACHE_TBLKSZ
8692
    {"SC_DCACHE_TBLKSZ",        _SC_DCACHE_TBLKSZ},
8693 8694
#endif
#ifdef _SC_DELAYTIMER_MAX
8695
    {"SC_DELAYTIMER_MAX",       _SC_DELAYTIMER_MAX},
8696 8697
#endif
#ifdef _SC_EQUIV_CLASS_MAX
8698
    {"SC_EQUIV_CLASS_MAX",      _SC_EQUIV_CLASS_MAX},
8699 8700
#endif
#ifdef _SC_EXPR_NEST_MAX
8701
    {"SC_EXPR_NEST_MAX",        _SC_EXPR_NEST_MAX},
8702 8703
#endif
#ifdef _SC_FSYNC
8704
    {"SC_FSYNC",        _SC_FSYNC},
8705 8706
#endif
#ifdef _SC_GETGR_R_SIZE_MAX
8707
    {"SC_GETGR_R_SIZE_MAX",     _SC_GETGR_R_SIZE_MAX},
8708 8709
#endif
#ifdef _SC_GETPW_R_SIZE_MAX
8710
    {"SC_GETPW_R_SIZE_MAX",     _SC_GETPW_R_SIZE_MAX},
8711 8712
#endif
#ifdef _SC_ICACHE_ASSOC
8713
    {"SC_ICACHE_ASSOC", _SC_ICACHE_ASSOC},
8714 8715
#endif
#ifdef _SC_ICACHE_BLKSZ
8716
    {"SC_ICACHE_BLKSZ", _SC_ICACHE_BLKSZ},
8717 8718
#endif
#ifdef _SC_ICACHE_LINESZ
8719
    {"SC_ICACHE_LINESZ",        _SC_ICACHE_LINESZ},
8720 8721
#endif
#ifdef _SC_ICACHE_SZ
8722
    {"SC_ICACHE_SZ",    _SC_ICACHE_SZ},
8723
#endif
8724
#ifdef _SC_INF
8725
    {"SC_INF",  _SC_INF},
8726
#endif
8727
#ifdef _SC_INT_MAX
8728
    {"SC_INT_MAX",      _SC_INT_MAX},
8729 8730
#endif
#ifdef _SC_INT_MIN
8731
    {"SC_INT_MIN",      _SC_INT_MIN},
8732 8733
#endif
#ifdef _SC_IOV_MAX
8734
    {"SC_IOV_MAX",      _SC_IOV_MAX},
8735
#endif
8736
#ifdef _SC_IP_SECOPTS
8737
    {"SC_IP_SECOPTS",   _SC_IP_SECOPTS},
8738
#endif
8739
#ifdef _SC_JOB_CONTROL
8740
    {"SC_JOB_CONTROL",  _SC_JOB_CONTROL},
8741
#endif
8742
#ifdef _SC_KERN_POINTERS
8743
    {"SC_KERN_POINTERS",        _SC_KERN_POINTERS},
8744 8745
#endif
#ifdef _SC_KERN_SIM
8746
    {"SC_KERN_SIM",     _SC_KERN_SIM},
8747
#endif
8748
#ifdef _SC_LINE_MAX
8749
    {"SC_LINE_MAX",     _SC_LINE_MAX},
8750 8751
#endif
#ifdef _SC_LOGIN_NAME_MAX
8752
    {"SC_LOGIN_NAME_MAX",       _SC_LOGIN_NAME_MAX},
8753 8754
#endif
#ifdef _SC_LOGNAME_MAX
8755
    {"SC_LOGNAME_MAX",  _SC_LOGNAME_MAX},
8756 8757
#endif
#ifdef _SC_LONG_BIT
8758
    {"SC_LONG_BIT",     _SC_LONG_BIT},
8759
#endif
8760
#ifdef _SC_MAC
8761
    {"SC_MAC",  _SC_MAC},
8762
#endif
8763
#ifdef _SC_MAPPED_FILES
8764
    {"SC_MAPPED_FILES", _SC_MAPPED_FILES},
8765 8766
#endif
#ifdef _SC_MAXPID
8767
    {"SC_MAXPID",       _SC_MAXPID},
8768 8769
#endif
#ifdef _SC_MB_LEN_MAX
8770
    {"SC_MB_LEN_MAX",   _SC_MB_LEN_MAX},
8771 8772
#endif
#ifdef _SC_MEMLOCK
8773
    {"SC_MEMLOCK",      _SC_MEMLOCK},
8774 8775
#endif
#ifdef _SC_MEMLOCK_RANGE
8776
    {"SC_MEMLOCK_RANGE",        _SC_MEMLOCK_RANGE},
8777 8778
#endif
#ifdef _SC_MEMORY_PROTECTION
8779
    {"SC_MEMORY_PROTECTION",    _SC_MEMORY_PROTECTION},
8780 8781
#endif
#ifdef _SC_MESSAGE_PASSING
8782
    {"SC_MESSAGE_PASSING",      _SC_MESSAGE_PASSING},
8783
#endif
8784
#ifdef _SC_MMAP_FIXED_ALIGNMENT
8785
    {"SC_MMAP_FIXED_ALIGNMENT", _SC_MMAP_FIXED_ALIGNMENT},
8786
#endif
8787
#ifdef _SC_MQ_OPEN_MAX
8788
    {"SC_MQ_OPEN_MAX",  _SC_MQ_OPEN_MAX},
8789 8790
#endif
#ifdef _SC_MQ_PRIO_MAX
8791
    {"SC_MQ_PRIO_MAX",  _SC_MQ_PRIO_MAX},
8792
#endif
8793
#ifdef _SC_NACLS_MAX
8794
    {"SC_NACLS_MAX",    _SC_NACLS_MAX},
8795
#endif
8796
#ifdef _SC_NGROUPS_MAX
8797
    {"SC_NGROUPS_MAX",  _SC_NGROUPS_MAX},
8798 8799
#endif
#ifdef _SC_NL_ARGMAX
8800
    {"SC_NL_ARGMAX",    _SC_NL_ARGMAX},
8801 8802
#endif
#ifdef _SC_NL_LANGMAX
8803
    {"SC_NL_LANGMAX",   _SC_NL_LANGMAX},
8804 8805
#endif
#ifdef _SC_NL_MSGMAX
8806
    {"SC_NL_MSGMAX",    _SC_NL_MSGMAX},
8807 8808
#endif
#ifdef _SC_NL_NMAX
8809
    {"SC_NL_NMAX",      _SC_NL_NMAX},
8810 8811
#endif
#ifdef _SC_NL_SETMAX
8812
    {"SC_NL_SETMAX",    _SC_NL_SETMAX},
8813 8814
#endif
#ifdef _SC_NL_TEXTMAX
8815
    {"SC_NL_TEXTMAX",   _SC_NL_TEXTMAX},
8816 8817
#endif
#ifdef _SC_NPROCESSORS_CONF
8818
    {"SC_NPROCESSORS_CONF",     _SC_NPROCESSORS_CONF},
8819 8820
#endif
#ifdef _SC_NPROCESSORS_ONLN
8821
    {"SC_NPROCESSORS_ONLN",     _SC_NPROCESSORS_ONLN},
8822
#endif
8823
#ifdef _SC_NPROC_CONF
8824
    {"SC_NPROC_CONF",   _SC_NPROC_CONF},
8825 8826
#endif
#ifdef _SC_NPROC_ONLN
8827
    {"SC_NPROC_ONLN",   _SC_NPROC_ONLN},
8828
#endif
8829
#ifdef _SC_NZERO
8830
    {"SC_NZERO",        _SC_NZERO},
8831 8832
#endif
#ifdef _SC_OPEN_MAX
8833
    {"SC_OPEN_MAX",     _SC_OPEN_MAX},
8834 8835
#endif
#ifdef _SC_PAGESIZE
8836
    {"SC_PAGESIZE",     _SC_PAGESIZE},
8837 8838
#endif
#ifdef _SC_PAGE_SIZE
8839
    {"SC_PAGE_SIZE",    _SC_PAGE_SIZE},
8840 8841
#endif
#ifdef _SC_PASS_MAX
8842
    {"SC_PASS_MAX",     _SC_PASS_MAX},
8843 8844
#endif
#ifdef _SC_PHYS_PAGES
8845
    {"SC_PHYS_PAGES",   _SC_PHYS_PAGES},
8846 8847
#endif
#ifdef _SC_PII
8848
    {"SC_PII",  _SC_PII},
8849 8850
#endif
#ifdef _SC_PII_INTERNET
8851
    {"SC_PII_INTERNET", _SC_PII_INTERNET},
8852 8853
#endif
#ifdef _SC_PII_INTERNET_DGRAM
8854
    {"SC_PII_INTERNET_DGRAM",   _SC_PII_INTERNET_DGRAM},
8855 8856
#endif
#ifdef _SC_PII_INTERNET_STREAM
8857
    {"SC_PII_INTERNET_STREAM",  _SC_PII_INTERNET_STREAM},
8858 8859
#endif
#ifdef _SC_PII_OSI
8860
    {"SC_PII_OSI",      _SC_PII_OSI},
8861 8862
#endif
#ifdef _SC_PII_OSI_CLTS
8863
    {"SC_PII_OSI_CLTS", _SC_PII_OSI_CLTS},
8864 8865
#endif
#ifdef _SC_PII_OSI_COTS
8866
    {"SC_PII_OSI_COTS", _SC_PII_OSI_COTS},
8867 8868
#endif
#ifdef _SC_PII_OSI_M
8869
    {"SC_PII_OSI_M",    _SC_PII_OSI_M},
8870 8871
#endif
#ifdef _SC_PII_SOCKET
8872
    {"SC_PII_SOCKET",   _SC_PII_SOCKET},
8873 8874
#endif
#ifdef _SC_PII_XTI
8875
    {"SC_PII_XTI",      _SC_PII_XTI},
8876 8877
#endif
#ifdef _SC_POLL
8878
    {"SC_POLL", _SC_POLL},
8879 8880
#endif
#ifdef _SC_PRIORITIZED_IO
8881
    {"SC_PRIORITIZED_IO",       _SC_PRIORITIZED_IO},
8882 8883
#endif
#ifdef _SC_PRIORITY_SCHEDULING
8884
    {"SC_PRIORITY_SCHEDULING",  _SC_PRIORITY_SCHEDULING},
8885 8886
#endif
#ifdef _SC_REALTIME_SIGNALS
8887
    {"SC_REALTIME_SIGNALS",     _SC_REALTIME_SIGNALS},
8888 8889
#endif
#ifdef _SC_RE_DUP_MAX
8890
    {"SC_RE_DUP_MAX",   _SC_RE_DUP_MAX},
8891 8892
#endif
#ifdef _SC_RTSIG_MAX
8893
    {"SC_RTSIG_MAX",    _SC_RTSIG_MAX},
8894 8895
#endif
#ifdef _SC_SAVED_IDS
8896
    {"SC_SAVED_IDS",    _SC_SAVED_IDS},
8897 8898
#endif
#ifdef _SC_SCHAR_MAX
8899
    {"SC_SCHAR_MAX",    _SC_SCHAR_MAX},
8900 8901
#endif
#ifdef _SC_SCHAR_MIN
8902
    {"SC_SCHAR_MIN",    _SC_SCHAR_MIN},
8903 8904
#endif
#ifdef _SC_SELECT
8905
    {"SC_SELECT",       _SC_SELECT},
8906 8907
#endif
#ifdef _SC_SEMAPHORES
8908
    {"SC_SEMAPHORES",   _SC_SEMAPHORES},
8909 8910
#endif
#ifdef _SC_SEM_NSEMS_MAX
8911
    {"SC_SEM_NSEMS_MAX",        _SC_SEM_NSEMS_MAX},
8912 8913
#endif
#ifdef _SC_SEM_VALUE_MAX
8914
    {"SC_SEM_VALUE_MAX",        _SC_SEM_VALUE_MAX},
8915 8916
#endif
#ifdef _SC_SHARED_MEMORY_OBJECTS
8917
    {"SC_SHARED_MEMORY_OBJECTS",        _SC_SHARED_MEMORY_OBJECTS},
8918 8919
#endif
#ifdef _SC_SHRT_MAX
8920
    {"SC_SHRT_MAX",     _SC_SHRT_MAX},
8921 8922
#endif
#ifdef _SC_SHRT_MIN
8923
    {"SC_SHRT_MIN",     _SC_SHRT_MIN},
8924 8925
#endif
#ifdef _SC_SIGQUEUE_MAX
8926
    {"SC_SIGQUEUE_MAX", _SC_SIGQUEUE_MAX},
8927 8928
#endif
#ifdef _SC_SIGRT_MAX
8929
    {"SC_SIGRT_MAX",    _SC_SIGRT_MAX},
8930 8931
#endif
#ifdef _SC_SIGRT_MIN
8932
    {"SC_SIGRT_MIN",    _SC_SIGRT_MIN},
8933
#endif
8934
#ifdef _SC_SOFTPOWER
8935
    {"SC_SOFTPOWER",    _SC_SOFTPOWER},
8936
#endif
8937
#ifdef _SC_SPLIT_CACHE
8938
    {"SC_SPLIT_CACHE",  _SC_SPLIT_CACHE},
8939 8940
#endif
#ifdef _SC_SSIZE_MAX
8941
    {"SC_SSIZE_MAX",    _SC_SSIZE_MAX},
8942 8943
#endif
#ifdef _SC_STACK_PROT
8944
    {"SC_STACK_PROT",   _SC_STACK_PROT},
8945 8946
#endif
#ifdef _SC_STREAM_MAX
8947
    {"SC_STREAM_MAX",   _SC_STREAM_MAX},
8948 8949
#endif
#ifdef _SC_SYNCHRONIZED_IO
8950
    {"SC_SYNCHRONIZED_IO",      _SC_SYNCHRONIZED_IO},
8951 8952
#endif
#ifdef _SC_THREADS
8953
    {"SC_THREADS",      _SC_THREADS},
8954 8955
#endif
#ifdef _SC_THREAD_ATTR_STACKADDR
8956
    {"SC_THREAD_ATTR_STACKADDR",        _SC_THREAD_ATTR_STACKADDR},
8957 8958
#endif
#ifdef _SC_THREAD_ATTR_STACKSIZE
8959
    {"SC_THREAD_ATTR_STACKSIZE",        _SC_THREAD_ATTR_STACKSIZE},
8960 8961
#endif
#ifdef _SC_THREAD_DESTRUCTOR_ITERATIONS
8962
    {"SC_THREAD_DESTRUCTOR_ITERATIONS", _SC_THREAD_DESTRUCTOR_ITERATIONS},
8963 8964
#endif
#ifdef _SC_THREAD_KEYS_MAX
8965
    {"SC_THREAD_KEYS_MAX",      _SC_THREAD_KEYS_MAX},
8966 8967
#endif
#ifdef _SC_THREAD_PRIORITY_SCHEDULING
8968
    {"SC_THREAD_PRIORITY_SCHEDULING",   _SC_THREAD_PRIORITY_SCHEDULING},
8969 8970
#endif
#ifdef _SC_THREAD_PRIO_INHERIT
8971
    {"SC_THREAD_PRIO_INHERIT",  _SC_THREAD_PRIO_INHERIT},
8972 8973
#endif
#ifdef _SC_THREAD_PRIO_PROTECT
8974
    {"SC_THREAD_PRIO_PROTECT",  _SC_THREAD_PRIO_PROTECT},
8975 8976
#endif
#ifdef _SC_THREAD_PROCESS_SHARED
8977
    {"SC_THREAD_PROCESS_SHARED",        _SC_THREAD_PROCESS_SHARED},
8978 8979
#endif
#ifdef _SC_THREAD_SAFE_FUNCTIONS
8980
    {"SC_THREAD_SAFE_FUNCTIONS",        _SC_THREAD_SAFE_FUNCTIONS},
8981 8982
#endif
#ifdef _SC_THREAD_STACK_MIN
8983
    {"SC_THREAD_STACK_MIN",     _SC_THREAD_STACK_MIN},
8984 8985
#endif
#ifdef _SC_THREAD_THREADS_MAX
8986
    {"SC_THREAD_THREADS_MAX",   _SC_THREAD_THREADS_MAX},
8987 8988
#endif
#ifdef _SC_TIMERS
8989
    {"SC_TIMERS",       _SC_TIMERS},
8990 8991
#endif
#ifdef _SC_TIMER_MAX
8992
    {"SC_TIMER_MAX",    _SC_TIMER_MAX},
8993 8994
#endif
#ifdef _SC_TTY_NAME_MAX
8995
    {"SC_TTY_NAME_MAX", _SC_TTY_NAME_MAX},
8996 8997
#endif
#ifdef _SC_TZNAME_MAX
8998
    {"SC_TZNAME_MAX",   _SC_TZNAME_MAX},
8999 9000
#endif
#ifdef _SC_T_IOV_MAX
9001
    {"SC_T_IOV_MAX",    _SC_T_IOV_MAX},
9002 9003
#endif
#ifdef _SC_UCHAR_MAX
9004
    {"SC_UCHAR_MAX",    _SC_UCHAR_MAX},
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#endif
#ifdef _SC_UINT_MAX
9007
    {"SC_UINT_MAX",     _SC_UINT_MAX},
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#endif
#ifdef _SC_UIO_MAXIOV
9010
    {"SC_UIO_MAXIOV",   _SC_UIO_MAXIOV},
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#endif
#ifdef _SC_ULONG_MAX
9013
    {"SC_ULONG_MAX",    _SC_ULONG_MAX},
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#endif
#ifdef _SC_USHRT_MAX
9016
    {"SC_USHRT_MAX",    _SC_USHRT_MAX},
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#endif
#ifdef _SC_VERSION
9019
    {"SC_VERSION",      _SC_VERSION},
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#endif
#ifdef _SC_WORD_BIT
9022
    {"SC_WORD_BIT",     _SC_WORD_BIT},
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#endif
#ifdef _SC_XBS5_ILP32_OFF32
9025
    {"SC_XBS5_ILP32_OFF32",     _SC_XBS5_ILP32_OFF32},
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#endif
#ifdef _SC_XBS5_ILP32_OFFBIG
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    {"SC_XBS5_ILP32_OFFBIG",    _SC_XBS5_ILP32_OFFBIG},
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#endif
#ifdef _SC_XBS5_LP64_OFF64
9031
    {"SC_XBS5_LP64_OFF64",      _SC_XBS5_LP64_OFF64},
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#endif
#ifdef _SC_XBS5_LPBIG_OFFBIG
9034
    {"SC_XBS5_LPBIG_OFFBIG",    _SC_XBS5_LPBIG_OFFBIG},
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#endif
#ifdef _SC_XOPEN_CRYPT
9037
    {"SC_XOPEN_CRYPT",  _SC_XOPEN_CRYPT},
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#endif
#ifdef _SC_XOPEN_ENH_I18N
9040
    {"SC_XOPEN_ENH_I18N",       _SC_XOPEN_ENH_I18N},
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#endif
#ifdef _SC_XOPEN_LEGACY
9043
    {"SC_XOPEN_LEGACY", _SC_XOPEN_LEGACY},
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#endif
#ifdef _SC_XOPEN_REALTIME
9046
    {"SC_XOPEN_REALTIME",       _SC_XOPEN_REALTIME},
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#endif
#ifdef _SC_XOPEN_REALTIME_THREADS
9049
    {"SC_XOPEN_REALTIME_THREADS",       _SC_XOPEN_REALTIME_THREADS},
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#endif
#ifdef _SC_XOPEN_SHM
9052
    {"SC_XOPEN_SHM",    _SC_XOPEN_SHM},
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#endif
#ifdef _SC_XOPEN_UNIX
9055
    {"SC_XOPEN_UNIX",   _SC_XOPEN_UNIX},
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#endif
#ifdef _SC_XOPEN_VERSION
9058
    {"SC_XOPEN_VERSION",        _SC_XOPEN_VERSION},
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#endif
#ifdef _SC_XOPEN_XCU_VERSION
9061
    {"SC_XOPEN_XCU_VERSION",    _SC_XOPEN_XCU_VERSION},
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#endif
#ifdef _SC_XOPEN_XPG2
9064
    {"SC_XOPEN_XPG2",   _SC_XOPEN_XPG2},
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#endif
#ifdef _SC_XOPEN_XPG3
9067
    {"SC_XOPEN_XPG3",   _SC_XOPEN_XPG3},
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#endif
#ifdef _SC_XOPEN_XPG4
9070
    {"SC_XOPEN_XPG4",   _SC_XOPEN_XPG4},
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#endif
};

static int
9075
conv_sysconf_confname(PyObject *arg, int *valuep)
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{
    return conv_confname(arg, valuep, posix_constants_sysconf,
                         sizeof(posix_constants_sysconf)
                           / sizeof(struct constdef));
}

9082
PyDoc_STRVAR(posix_sysconf__doc__,
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9083
"sysconf(name) -> integer\n\n\
9084
Return an integer-valued system configuration variable.");
9085 9086

static PyObject *
9087
posix_sysconf(PyObject *self, PyObject *args)
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{
    PyObject *result = NULL;
    int name;

    if (PyArg_ParseTuple(args, "O&:sysconf", conv_sysconf_confname, &name)) {
        int value;

        errno = 0;
        value = sysconf(name);
        if (value == -1 && errno != 0)
            posix_error();
        else
9100
            result = PyLong_FromLong(value);
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    }
    return result;
}
#endif


9107 9108 9109 9110 9111 9112 9113 9114
/* This code is used to ensure that the tables of configuration value names
 * are in sorted order as required by conv_confname(), and also to build the
 * the exported dictionaries that are used to publish information about the
 * names available on the host platform.
 *
 * Sorting the table at runtime ensures that the table is properly ordered
 * when used, even for platforms we're not able to test on.  It also makes
 * it easier to add additional entries to the tables.
9115
 */
9116 9117

static int
9118
cmp_constdefs(const void *v1,  const void *v2)
9119 9120
{
    const struct constdef *c1 =
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    (const struct constdef *) v1;
9122
    const struct constdef *c2 =
9123
    (const struct constdef *) v2;
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    return strcmp(c1->name, c2->name);
}

static int
9129
setup_confname_table(struct constdef *table, size_t tablesize,
9130
                     char *tablename, PyObject *module)
9131
{
9132
    PyObject *d = NULL;
9133
    size_t i;
9134

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    qsort(table, tablesize, sizeof(struct constdef), cmp_constdefs);
    d = PyDict_New();
9137
    if (d == NULL)
9138
        return -1;
9139 9140

    for (i=0; i < tablesize; ++i) {
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        PyObject *o = PyLong_FromLong(table[i].value);
        if (o == NULL || PyDict_SetItemString(d, table[i].name, o) == -1) {
            Py_XDECREF(o);
            Py_DECREF(d);
            return -1;
        }
        Py_DECREF(o);
9148
    }
9149
    return PyModule_AddObject(module, tablename, d);
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}

9152 9153
/* Return -1 on failure, 0 on success. */
static int
9154
setup_confname_tables(PyObject *module)
9155 9156
{
#if defined(HAVE_FPATHCONF) || defined(HAVE_PATHCONF)
9157
    if (setup_confname_table(posix_constants_pathconf,
9158 9159
                             sizeof(posix_constants_pathconf)
                               / sizeof(struct constdef),
9160
                             "pathconf_names", module))
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9161
        return -1;
9162 9163
#endif
#ifdef HAVE_CONFSTR
9164
    if (setup_confname_table(posix_constants_confstr,
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                             sizeof(posix_constants_confstr)
                               / sizeof(struct constdef),
9167
                             "confstr_names", module))
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9168
        return -1;
9169 9170
#endif
#ifdef HAVE_SYSCONF
9171
    if (setup_confname_table(posix_constants_sysconf,
9172 9173
                             sizeof(posix_constants_sysconf)
                               / sizeof(struct constdef),
9174
                             "sysconf_names", module))
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9175
        return -1;
9176
#endif
9177
    return 0;
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}


9181
PyDoc_STRVAR(posix_abort__doc__,
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9182
"abort() -> does not return!\n\n\
9183
Abort the interpreter immediately.  This 'dumps core' or otherwise fails\n\
9184
in the hardest way possible on the hosting operating system.");
9185 9186

static PyObject *
9187
posix_abort(PyObject *self, PyObject *noargs)
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{
    abort();
    /*NOTREACHED*/
    Py_FatalError("abort() called from Python code didn't abort!");
    return NULL;
}
9194

9195
#ifdef MS_WINDOWS
9196
PyDoc_STRVAR(win32_startfile__doc__,
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"startfile(filepath [, operation]) - Start a file with its associated\n\
application.\n\
9199
\n\
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When \"operation\" is not specified or \"open\", this acts like\n\
double-clicking the file in Explorer, or giving the file name as an\n\
argument to the DOS \"start\" command: the file is opened with whatever\n\
application (if any) its extension is associated.\n\
When another \"operation\" is given, it specifies what should be done with\n\
the file.  A typical operation is \"print\".\n\
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\n\
startfile returns as soon as the associated application is launched.\n\
There is no option to wait for the application to close, and no way\n\
to retrieve the application's exit status.\n\
\n\
The filepath is relative to the current directory.  If you want to use\n\
an absolute path, make sure the first character is not a slash (\"/\");\n\
9213
the underlying Win32 ShellExecute function doesn't work if it is.");
9214 9215 9216 9217

static PyObject *
win32_startfile(PyObject *self, PyObject *args)
{
9218 9219 9220
    PyObject *ofilepath;
    char *filepath;
    char *operation = NULL;
9221
    wchar_t *wpath, *woperation;
9222 9223
    HINSTANCE rc;

9224
    PyObject *unipath, *uoperation = NULL;
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    if (!PyArg_ParseTuple(args, "U|s:startfile",
                          &unipath, &operation)) {
        PyErr_Clear();
        goto normal;
    }

    if (operation) {
9232
        uoperation = PyUnicode_DecodeASCII(operation,
9233
                                           strlen(operation), NULL);
9234
        if (!uoperation) {
9235 9236 9237 9238 9239 9240
            PyErr_Clear();
            operation = NULL;
            goto normal;
        }
    }

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    wpath = PyUnicode_AsUnicode(unipath);
    if (wpath == NULL)
        goto normal;
    if (uoperation) {
        woperation = PyUnicode_AsUnicode(uoperation);
        if (woperation == NULL)
            goto normal;
    }
    else
        woperation = NULL;

9252
    Py_BEGIN_ALLOW_THREADS
9253 9254
    rc = ShellExecuteW((HWND)0, woperation, wpath,
                       NULL, NULL, SW_SHOWNORMAL);
9255 9256
    Py_END_ALLOW_THREADS

9257
    Py_XDECREF(uoperation);
9258
    if (rc <= (HINSTANCE)32) {
9259 9260
        win32_error_object("startfile", unipath);
        return NULL;
9261 9262 9263
    }
    Py_INCREF(Py_None);
    return Py_None;
9264 9265

normal:
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    if (!PyArg_ParseTuple(args, "O&|s:startfile",
                          PyUnicode_FSConverter, &ofilepath,
                          &operation))
        return NULL;
9270 9271 9272 9273
    if (win32_warn_bytes_api()) {
        Py_DECREF(ofilepath);
        return NULL;
    }
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    filepath = PyBytes_AsString(ofilepath);
    Py_BEGIN_ALLOW_THREADS
    rc = ShellExecute((HWND)0, operation, filepath,
                      NULL, NULL, SW_SHOWNORMAL);
    Py_END_ALLOW_THREADS
    if (rc <= (HINSTANCE)32) {
        PyObject *errval = win32_error("startfile", filepath);
        Py_DECREF(ofilepath);
        return errval;
    }
    Py_DECREF(ofilepath);
    Py_INCREF(Py_None);
    return Py_None;
9287 9288
}
#endif
9289

9290 9291 9292 9293 9294 9295 9296 9297
#ifdef HAVE_GETLOADAVG
PyDoc_STRVAR(posix_getloadavg__doc__,
"getloadavg() -> (float, float, float)\n\n\
Return the number of processes in the system run queue averaged over\n\
the last 1, 5, and 15 minutes or raises OSError if the load average\n\
was unobtainable");

static PyObject *
9298
posix_getloadavg(PyObject *self, PyObject *noargs)
9299 9300 9301
{
    double loadavg[3];
    if (getloadavg(loadavg, 3)!=3) {
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9302 9303
        PyErr_SetString(PyExc_OSError, "Load averages are unobtainable");
        return NULL;
9304
    } else
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9305
        return Py_BuildValue("ddd", loadavg[0], loadavg[1], loadavg[2]);
9306 9307 9308
}
#endif

9309 9310 9311 9312
#ifdef MS_WINDOWS

PyDoc_STRVAR(win32_urandom__doc__,
"urandom(n) -> str\n\n\
9313
Return n random bytes suitable for cryptographic use.");
9314 9315 9316 9317 9318 9319 9320 9321

typedef BOOL (WINAPI *CRYPTACQUIRECONTEXTA)(HCRYPTPROV *phProv,\
              LPCSTR pszContainer, LPCSTR pszProvider, DWORD dwProvType,\
              DWORD dwFlags );
typedef BOOL (WINAPI *CRYPTGENRANDOM)(HCRYPTPROV hProv, DWORD dwLen,\
              BYTE *pbBuffer );

static CRYPTGENRANDOM pCryptGenRandom = NULL;
9322 9323
/* This handle is never explicitly released. Instead, the operating
   system will release it when the process terminates. */
9324 9325
static HCRYPTPROV hCryptProv = 0;

9326 9327
static PyObject*
win32_urandom(PyObject *self, PyObject *args)
9328
{
9329 9330 9331 9332 9333 9334 9335 9336 9337 9338 9339 9340 9341 9342 9343 9344
    int howMany;
    PyObject* result;

    /* Read arguments */
    if (! PyArg_ParseTuple(args, "i:urandom", &howMany))
        return NULL;
    if (howMany < 0)
        return PyErr_Format(PyExc_ValueError,
                            "negative argument not allowed");

    if (hCryptProv == 0) {
        HINSTANCE hAdvAPI32 = NULL;
        CRYPTACQUIRECONTEXTA pCryptAcquireContext = NULL;

        /* Obtain handle to the DLL containing CryptoAPI
           This should not fail         */
9345
        hAdvAPI32 = GetModuleHandleW(L"advapi32.dll");
9346 9347 9348 9349 9350 9351 9352 9353 9354 9355 9356 9357 9358 9359 9360 9361 9362 9363 9364 9365 9366 9367 9368 9369 9370 9371 9372 9373 9374 9375 9376 9377 9378 9379 9380 9381
        if(hAdvAPI32 == NULL)
            return win32_error("GetModuleHandle", NULL);

        /* Obtain pointers to the CryptoAPI functions
           This will fail on some early versions of Win95 */
        pCryptAcquireContext = (CRYPTACQUIRECONTEXTA)GetProcAddress(
                                        hAdvAPI32,
                                        "CryptAcquireContextA");
        if (pCryptAcquireContext == NULL)
            return PyErr_Format(PyExc_NotImplementedError,
                                "CryptAcquireContextA not found");

        pCryptGenRandom = (CRYPTGENRANDOM)GetProcAddress(
                                        hAdvAPI32, "CryptGenRandom");
        if (pCryptGenRandom == NULL)
            return PyErr_Format(PyExc_NotImplementedError,
                                "CryptGenRandom not found");

        /* Acquire context */
        if (! pCryptAcquireContext(&hCryptProv, NULL, NULL,
                                   PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))
            return win32_error("CryptAcquireContext", NULL);
    }

    /* Allocate bytes */
    result = PyBytes_FromStringAndSize(NULL, howMany);
    if (result != NULL) {
        /* Get random data */
        memset(PyBytes_AS_STRING(result), 0, howMany); /* zero seed */
        if (! pCryptGenRandom(hCryptProv, howMany, (unsigned char*)
                              PyBytes_AS_STRING(result))) {
            Py_DECREF(result);
            return win32_error("CryptGenRandom", NULL);
        }
    }
    return result;
9382 9383
}
#endif
9384

9385 9386 9387 9388 9389 9390 9391 9392
PyDoc_STRVAR(device_encoding__doc__,
"device_encoding(fd) -> str\n\n\
Return a string describing the encoding of the device\n\
if the output is a terminal; else return None.");

static PyObject *
device_encoding(PyObject *self, PyObject *args)
{
9393
    int fd;
9394 9395 9396
#if defined(MS_WINDOWS) || defined(MS_WIN64)
    UINT cp;
#endif
9397 9398 9399 9400 9401 9402
    if (!PyArg_ParseTuple(args, "i:device_encoding", &fd))
        return NULL;
    if (!_PyVerify_fd(fd) || !isatty(fd)) {
        Py_INCREF(Py_None);
        return Py_None;
    }
9403
#if defined(MS_WINDOWS) || defined(MS_WIN64)
9404 9405 9406 9407 9408 9409 9410 9411 9412 9413
    if (fd == 0)
        cp = GetConsoleCP();
    else if (fd == 1 || fd == 2)
        cp = GetConsoleOutputCP();
    else
        cp = 0;
    /* GetConsoleCP() and GetConsoleOutputCP() return 0 if the application
       has no console */
    if (cp != 0)
        return PyUnicode_FromFormat("cp%u", (unsigned int)cp);
9414
#elif defined(CODESET)
9415 9416 9417 9418 9419
    {
        char *codeset = nl_langinfo(CODESET);
        if (codeset != NULL && codeset[0] != 0)
            return PyUnicode_FromString(codeset);
    }
9420
#endif
9421 9422
    Py_INCREF(Py_None);
    return Py_None;
9423 9424
}

9425 9426 9427 9428 9429
#ifdef __VMS
/* Use openssl random routine */
#include <openssl/rand.h>
PyDoc_STRVAR(vms_urandom__doc__,
"urandom(n) -> str\n\n\
9430
Return n random bytes suitable for cryptographic use.");
9431 9432 9433 9434

static PyObject*
vms_urandom(PyObject *self, PyObject *args)
{
9435 9436
    int howMany;
    PyObject* result;
9437

9438 9439 9440 9441 9442 9443 9444 9445 9446 9447 9448 9449 9450 9451 9452 9453 9454 9455 9456 9457
    /* Read arguments */
    if (! PyArg_ParseTuple(args, "i:urandom", &howMany))
        return NULL;
    if (howMany < 0)
        return PyErr_Format(PyExc_ValueError,
                            "negative argument not allowed");

    /* Allocate bytes */
    result = PyBytes_FromStringAndSize(NULL, howMany);
    if (result != NULL) {
        /* Get random data */
        if (RAND_pseudo_bytes((unsigned char*)
                              PyBytes_AS_STRING(result),
                              howMany) < 0) {
            Py_DECREF(result);
            return PyErr_Format(PyExc_ValueError,
                                "RAND_pseudo_bytes");
        }
    }
    return result;
9458 9459 9460
}
#endif

9461 9462 9463 9464 9465 9466 9467 9468
#ifdef HAVE_SETRESUID
PyDoc_STRVAR(posix_setresuid__doc__,
"setresuid(ruid, euid, suid)\n\n\
Set the current process's real, effective, and saved user ids.");

static PyObject*
posix_setresuid (PyObject *self, PyObject *args)
{
9469 9470 9471 9472 9473 9474 9475
    /* We assume uid_t is no larger than a long. */
    long ruid, euid, suid;
    if (!PyArg_ParseTuple(args, "lll", &ruid, &euid, &suid))
        return NULL;
    if (setresuid(ruid, euid, suid) < 0)
        return posix_error();
    Py_RETURN_NONE;
9476 9477 9478 9479 9480 9481 9482 9483 9484 9485 9486
}
#endif

#ifdef HAVE_SETRESGID
PyDoc_STRVAR(posix_setresgid__doc__,
"setresgid(rgid, egid, sgid)\n\n\
Set the current process's real, effective, and saved group ids.");

static PyObject*
posix_setresgid (PyObject *self, PyObject *args)
{
9487 9488 9489 9490 9491 9492 9493
    /* We assume uid_t is no larger than a long. */
    long rgid, egid, sgid;
    if (!PyArg_ParseTuple(args, "lll", &rgid, &egid, &sgid))
        return NULL;
    if (setresgid(rgid, egid, sgid) < 0)
        return posix_error();
    Py_RETURN_NONE;
9494 9495 9496 9497 9498 9499 9500 9501 9502 9503 9504
}
#endif

#ifdef HAVE_GETRESUID
PyDoc_STRVAR(posix_getresuid__doc__,
"getresuid() -> (ruid, euid, suid)\n\n\
Get tuple of the current process's real, effective, and saved user ids.");

static PyObject*
posix_getresuid (PyObject *self, PyObject *noargs)
{
9505 9506 9507 9508 9509 9510 9511 9512 9513
    uid_t ruid, euid, suid;
    long l_ruid, l_euid, l_suid;
    if (getresuid(&ruid, &euid, &suid) < 0)
        return posix_error();
    /* Force the values into long's as we don't know the size of uid_t. */
    l_ruid = ruid;
    l_euid = euid;
    l_suid = suid;
    return Py_BuildValue("(lll)", l_ruid, l_euid, l_suid);
9514 9515 9516 9517 9518 9519
}
#endif

#ifdef HAVE_GETRESGID
PyDoc_STRVAR(posix_getresgid__doc__,
"getresgid() -> (rgid, egid, sgid)\n\n\
9520
Get tuple of the current process's real, effective, and saved group ids.");
9521 9522 9523 9524

static PyObject*
posix_getresgid (PyObject *self, PyObject *noargs)
{
9525 9526 9527 9528 9529 9530 9531 9532 9533
    uid_t rgid, egid, sgid;
    long l_rgid, l_egid, l_sgid;
    if (getresgid(&rgid, &egid, &sgid) < 0)
        return posix_error();
    /* Force the values into long's as we don't know the size of uid_t. */
    l_rgid = rgid;
    l_egid = egid;
    l_sgid = sgid;
    return Py_BuildValue("(lll)", l_rgid, l_egid, l_sgid);
9534 9535 9536
}
#endif

9537 9538 9539 9540 9541 9542 9543 9544 9545 9546 9547 9548 9549 9550 9551 9552 9553 9554 9555 9556 9557 9558 9559 9560 9561 9562 9563 9564 9565 9566 9567 9568 9569 9570 9571 9572 9573 9574 9575 9576 9577 9578 9579 9580 9581 9582 9583 9584 9585 9586 9587 9588 9589 9590 9591 9592 9593 9594 9595 9596 9597 9598 9599 9600 9601 9602 9603 9604 9605 9606 9607 9608 9609 9610 9611 9612 9613 9614 9615 9616 9617 9618
/* Posix *at family of functions:
    faccessat, fchmodat, fchownat, fstatat, futimesat,
    linkat, mkdirat, mknodat, openat, readlinkat, renameat, symlinkat,
    unlinkat, utimensat, mkfifoat */

#ifdef HAVE_FACCESSAT
PyDoc_STRVAR(posix_faccessat__doc__,
"faccessat(dirfd, path, mode, flags=0) -> True if granted, False otherwise\n\n\
Like access() but if path is relative, it is taken as relative to dirfd.\n\
flags is optional and can be constructed by ORing together zero or more\n\
of these values: AT_SYMLINK_NOFOLLOW, AT_EACCESS.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_faccessat(PyObject *self, PyObject *args)
{
    PyObject *opath;
    char *path;
    int mode;
    int res;
    int dirfd, flags = 0;
    if (!PyArg_ParseTuple(args, "iO&i|i:faccessat",
            &dirfd, PyUnicode_FSConverter, &opath, &mode, &flags))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = faccessat(dirfd, path, mode, flags);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    return PyBool_FromLong(res == 0);
}
#endif

#ifdef HAVE_FCHMODAT
PyDoc_STRVAR(posix_fchmodat__doc__,
"fchmodat(dirfd, path, mode, flags=0)\n\n\
Like chmod() but if path is relative, it is taken as relative to dirfd.\n\
flags is optional and may be 0 or AT_SYMLINK_NOFOLLOW.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_fchmodat(PyObject *self, PyObject *args)
{
    int dirfd, mode, res;
    int flags = 0;
    PyObject *opath;
    char *path;

    if (!PyArg_ParseTuple(args, "iO&i|i:fchmodat",
            &dirfd, PyUnicode_FSConverter, &opath, &mode, &flags))
        return NULL;

    path = PyBytes_AsString(opath);

    Py_BEGIN_ALLOW_THREADS
    res = fchmodat(dirfd, path, mode, flags);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif /* HAVE_FCHMODAT */

#ifdef HAVE_FCHOWNAT
PyDoc_STRVAR(posix_fchownat__doc__,
"fchownat(dirfd, path, uid, gid, flags=0)\n\n\
Like chown() but if path is relative, it is taken as relative to dirfd.\n\
flags is optional and may be 0 or AT_SYMLINK_NOFOLLOW.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_fchownat(PyObject *self, PyObject *args)
{
    PyObject *opath;
    int dirfd, res;
    long uid, gid;
    int flags = 0;
    char *path;
9619

9620 9621 9622 9623 9624 9625 9626 9627 9628 9629 9630 9631 9632 9633 9634 9635 9636 9637 9638 9639 9640 9641 9642 9643 9644 9645 9646 9647 9648 9649 9650 9651 9652 9653 9654 9655 9656 9657 9658 9659 9660 9661 9662 9663 9664 9665 9666 9667 9668 9669
    if (!PyArg_ParseTuple(args, "iO&ll|i:fchownat",
            &dirfd, PyUnicode_FSConverter, &opath, &uid, &gid, &flags))
        return NULL;

    path = PyBytes_AsString(opath);

    Py_BEGIN_ALLOW_THREADS
    res = fchownat(dirfd, path, (uid_t) uid, (gid_t) gid, flags);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif /* HAVE_FCHOWNAT */

#ifdef HAVE_FSTATAT
PyDoc_STRVAR(posix_fstatat__doc__,
"fstatat(dirfd, path, flags=0) -> stat result\n\n\
Like stat() but if path is relative, it is taken as relative to dirfd.\n\
flags is optional and may be 0 or AT_SYMLINK_NOFOLLOW.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_fstatat(PyObject *self, PyObject *args)
{
    PyObject *opath;
    char *path;
    STRUCT_STAT st;
    int dirfd, res, flags = 0;

    if (!PyArg_ParseTuple(args, "iO&|i:fstatat",
            &dirfd, PyUnicode_FSConverter, &opath, &flags))
        return NULL;
    path = PyBytes_AsString(opath);

    Py_BEGIN_ALLOW_THREADS
    res = fstatat(dirfd, path, &st, flags);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    if (res != 0)
        return posix_error();

    return _pystat_fromstructstat(&st);
}
#endif

#ifdef HAVE_FUTIMESAT
PyDoc_STRVAR(posix_futimesat__doc__,
9670
"futimesat(dirfd, path[, (atime, mtime)])\n\
9671 9672 9673 9674 9675 9676 9677 9678 9679 9680
Like utime() but if path is relative, it is taken as relative to dirfd.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_futimesat(PyObject *self, PyObject *args)
{
    PyObject *opath;
    char *path;
    int res, dirfd;
9681
    PyObject* arg = Py_None;
9682
    time_t atime, mtime;
9683
    long ansec, mnsec;
9684

9685
    if (!PyArg_ParseTuple(args, "iO&|O:futimesat",
9686 9687 9688 9689 9690 9691 9692 9693 9694 9695 9696 9697 9698 9699 9700 9701 9702
            &dirfd, PyUnicode_FSConverter, &opath, &arg))
        return NULL;
    path = PyBytes_AsString(opath);
    if (arg == Py_None) {
        /* optional time values not given */
        Py_BEGIN_ALLOW_THREADS
        res = futimesat(dirfd, path, NULL);
        Py_END_ALLOW_THREADS
    }
    else if (!PyTuple_Check(arg) || PyTuple_Size(arg) != 2) {
        PyErr_SetString(PyExc_TypeError,
                "futimesat() arg 3 must be a tuple (atime, mtime)");
        Py_DECREF(opath);
        return NULL;
    }
    else {
        if (extract_time(PyTuple_GET_ITEM(arg, 0),
9703
                         &atime, &ansec) == -1) {
9704 9705 9706 9707
            Py_DECREF(opath);
            return NULL;
        }
        if (extract_time(PyTuple_GET_ITEM(arg, 1),
9708
                         &mtime, &mnsec) == -1) {
9709 9710 9711
            Py_DECREF(opath);
            return NULL;
        }
9712

9713
        Py_BEGIN_ALLOW_THREADS
9714 9715 9716 9717
        {
#ifdef HAVE_UTIMENSAT
        struct timespec buf[2];
        buf[0].tv_sec = atime;
9718
        buf[0].tv_nsec = ansec;
9719
        buf[1].tv_sec = mtime;
9720
        buf[1].tv_nsec = mnsec;
9721 9722 9723 9724
        res = utimensat(dirfd, path, buf, 0);
#else
        struct timeval buf[2];
        buf[0].tv_sec = atime;
9725
        buf[0].tv_usec = ansec / 1000;
9726
        buf[1].tv_sec = mtime;
9727
        buf[1].tv_usec = mnsec / 1000;
9728
        res = futimesat(dirfd, path, buf);
9729 9730
#endif
        }
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        Py_END_ALLOW_THREADS
    }
    Py_DECREF(opath);
    if (res < 0) {
        return posix_error();
    }
    Py_RETURN_NONE;
}
#endif

#ifdef HAVE_LINKAT
PyDoc_STRVAR(posix_linkat__doc__,
"linkat(srcfd, srcpath, dstfd, dstpath, flags=0)\n\n\
Like link() but if srcpath is relative, it is taken as relative to srcfd\n\
and if dstpath is relative, it is taken as relative to dstfd.\n\
flags is optional and may be 0 or AT_SYMLINK_FOLLOW.\n\
If srcpath is relative and srcfd is the special value AT_FDCWD, then\n\
srcpath is interpreted relative to the current working directory. This\n\
also applies for dstpath.");

static PyObject *
posix_linkat(PyObject *self, PyObject *args)
{
    PyObject *osrc, *odst;
    char *src, *dst;
    int res, srcfd, dstfd;
    int flags = 0;

    if (!PyArg_ParseTuple(args, "iO&iO&|i:linkat",
            &srcfd, PyUnicode_FSConverter, &osrc, &dstfd, PyUnicode_FSConverter, &odst, &flags))
        return NULL;
    src = PyBytes_AsString(osrc);
    dst = PyBytes_AsString(odst);
    Py_BEGIN_ALLOW_THREADS
    res = linkat(srcfd, src, dstfd, dst, flags);
    Py_END_ALLOW_THREADS
    Py_DECREF(osrc);
    Py_DECREF(odst);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif /* HAVE_LINKAT */

#ifdef HAVE_MKDIRAT
PyDoc_STRVAR(posix_mkdirat__doc__,
"mkdirat(dirfd, path, mode=0o777)\n\n\
Like mkdir() but if path is relative, it is taken as relative to dirfd.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_mkdirat(PyObject *self, PyObject *args)
{
    int res, dirfd;
    PyObject *opath;
    char *path;
    int mode = 0777;

    if (!PyArg_ParseTuple(args, "iO&|i:mkdirat",
            &dirfd, PyUnicode_FSConverter, &opath, &mode))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = mkdirat(dirfd, path, mode);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif

#if defined(HAVE_MKNODAT) && defined(HAVE_MAKEDEV)
PyDoc_STRVAR(posix_mknodat__doc__,
"mknodat(dirfd, path, mode=0o600, device=0)\n\n\
Like mknod() but if path is relative, it is taken as relative to dirfd.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_mknodat(PyObject *self, PyObject *args)
{
    PyObject *opath;
    char *filename;
    int mode = 0600;
    int device = 0;
    int res, dirfd;
    if (!PyArg_ParseTuple(args, "iO&|ii:mknodat", &dirfd,
            PyUnicode_FSConverter, &opath, &mode, &device))
        return NULL;
    filename = PyBytes_AS_STRING(opath);
    Py_BEGIN_ALLOW_THREADS
    res = mknodat(dirfd, filename, mode, device);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif

#ifdef HAVE_OPENAT
PyDoc_STRVAR(posix_openat__doc__,
"openat(dirfd, path, flag, mode=0o777) -> fd\n\n\
Like open() but if path is relative, it is taken as relative to dirfd.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_openat(PyObject *self, PyObject *args)
{
    PyObject *ofile;
    char *file;
    int flag, dirfd, fd;
    int mode = 0777;

    if (!PyArg_ParseTuple(args, "iO&i|i:openat",
            &dirfd, PyUnicode_FSConverter, &ofile,
            &flag, &mode))
        return NULL;
    file = PyBytes_AsString(ofile);
    Py_BEGIN_ALLOW_THREADS
    fd = openat(dirfd, file, flag, mode);
    Py_END_ALLOW_THREADS
    Py_DECREF(ofile);
    if (fd < 0)
        return posix_error();
    return PyLong_FromLong((long)fd);
}
#endif

#ifdef HAVE_READLINKAT
PyDoc_STRVAR(posix_readlinkat__doc__,
"readlinkat(dirfd, path) -> path\n\n\
Like readlink() but if path is relative, it is taken as relative to dirfd.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_readlinkat(PyObject *self, PyObject *args)
{
    PyObject *v, *opath;
    char buf[MAXPATHLEN];
    char *path;
    int n, dirfd;
    int arg_is_unicode = 0;

    if (!PyArg_ParseTuple(args, "iO&:readlinkat",
            &dirfd, PyUnicode_FSConverter, &opath))
        return NULL;
    path = PyBytes_AsString(opath);
    v = PySequence_GetItem(args, 1);
    if (v == NULL) {
        Py_DECREF(opath);
        return NULL;
    }

    if (PyUnicode_Check(v)) {
        arg_is_unicode = 1;
    }
    Py_DECREF(v);

    Py_BEGIN_ALLOW_THREADS
    n = readlinkat(dirfd, path, buf, (int) sizeof buf);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    if (n < 0)
        return posix_error();

    if (arg_is_unicode)
        return PyUnicode_DecodeFSDefaultAndSize(buf, n);
    else
        return PyBytes_FromStringAndSize(buf, n);
}
#endif /* HAVE_READLINKAT */

#ifdef HAVE_RENAMEAT
PyDoc_STRVAR(posix_renameat__doc__,
"renameat(olddirfd, oldpath, newdirfd, newpath)\n\n\
Like rename() but if oldpath is relative, it is taken as relative to\n\
olddirfd and if newpath is relative, it is taken as relative to newdirfd.\n\
If oldpath is relative and olddirfd is the special value AT_FDCWD, then\n\
oldpath is interpreted relative to the current working directory. This\n\
also applies for newpath.");

static PyObject *
posix_renameat(PyObject *self, PyObject *args)
{
    int res;
    PyObject *opathold, *opathnew;
    char *opath, *npath;
    int oldfd, newfd;

    if (!PyArg_ParseTuple(args, "iO&iO&:renameat",
            &oldfd, PyUnicode_FSConverter, &opathold, &newfd, PyUnicode_FSConverter, &opathnew))
        return NULL;
    opath = PyBytes_AsString(opathold);
    npath = PyBytes_AsString(opathnew);
    Py_BEGIN_ALLOW_THREADS
    res = renameat(oldfd, opath, newfd, npath);
    Py_END_ALLOW_THREADS
    Py_DECREF(opathold);
    Py_DECREF(opathnew);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif

#if HAVE_SYMLINKAT
PyDoc_STRVAR(posix_symlinkat__doc__,
"symlinkat(src, dstfd, dst)\n\n\
Like symlink() but if dst is relative, it is taken as relative to dstfd.\n\
If dst is relative and dstfd is the special value AT_FDCWD, then dst\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_symlinkat(PyObject *self, PyObject *args)
{
    int res, dstfd;
    PyObject *osrc, *odst;
    char *src, *dst;

    if (!PyArg_ParseTuple(args, "O&iO&:symlinkat",
            PyUnicode_FSConverter, &osrc, &dstfd, PyUnicode_FSConverter, &odst))
        return NULL;
    src = PyBytes_AsString(osrc);
    dst = PyBytes_AsString(odst);
    Py_BEGIN_ALLOW_THREADS
    res = symlinkat(src, dstfd, dst);
    Py_END_ALLOW_THREADS
    Py_DECREF(osrc);
    Py_DECREF(odst);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif /* HAVE_SYMLINKAT */

#ifdef HAVE_UNLINKAT
PyDoc_STRVAR(posix_unlinkat__doc__,
"unlinkat(dirfd, path, flags=0)\n\n\
Like unlink() but if path is relative, it is taken as relative to dirfd.\n\
flags is optional and may be 0 or AT_REMOVEDIR. If AT_REMOVEDIR is\n\
specified, unlinkat() behaves like rmdir().\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_unlinkat(PyObject *self, PyObject *args)
{
    int dirfd, res, flags = 0;
    PyObject *opath;
    char *path;

    if (!PyArg_ParseTuple(args, "iO&|i:unlinkat",
            &dirfd, PyUnicode_FSConverter, &opath, &flags))
        return NULL;
    path = PyBytes_AsString(opath);
    Py_BEGIN_ALLOW_THREADS
    res = unlinkat(dirfd, path, flags);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif

#ifdef HAVE_UTIMENSAT
PyDoc_STRVAR(posix_utimensat__doc__,
10003 10004
"utimensat(dirfd, path[, atime=(atime_sec, atime_nsec),\n\
    mtime=(mtime_sec, mtime_nsec), flags=0])\n\
10005 10006 10007
utimensat(dirfd, path, None, None, flags)\n\n\
Updates the timestamps of a file with nanosecond precision. If path is\n\
relative, it is taken as relative to dirfd.\n\
10008 10009
If atime and mtime are both None, which is the default, set atime and\n\
mtime to the current time.\n\
10010 10011 10012 10013 10014 10015 10016 10017
flags is optional and may be 0 or AT_SYMLINK_NOFOLLOW.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.\n\
If *_nsec is specified as UTIME_NOW, the timestamp is updated to the\n\
current time.\n\
If *_nsec is specified as UTIME_OMIT, the timestamp is not updated.");

static PyObject *
10018
posix_utimensat(PyObject *self, PyObject *args, PyObject *kwargs)
10019 10020 10021 10022
{
    PyObject *opath;
    char *path;
    int res, dirfd, flags = 0;
10023 10024 10025 10026
    PyObject *atime = Py_None;
    PyObject *mtime = Py_None;

    static char *kwlist[] = {"dirfd", "path", "atime", "mtime", "flags", NULL};
10027 10028 10029

    struct timespec buf[2];

10030
    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "iO&|OOi:utimensat", kwlist,
10031 10032 10033 10034 10035 10036 10037 10038 10039 10040 10041 10042 10043 10044 10045 10046 10047 10048 10049 10050 10051 10052 10053 10054 10055 10056 10057 10058 10059 10060 10061 10062 10063 10064 10065 10066 10067 10068 10069 10070 10071 10072 10073 10074 10075 10076 10077 10078 10079 10080 10081 10082 10083 10084 10085 10086 10087 10088 10089 10090 10091 10092 10093 10094 10095 10096 10097 10098 10099 10100 10101 10102
            &dirfd, PyUnicode_FSConverter, &opath, &atime, &mtime, &flags))
        return NULL;
    path = PyBytes_AsString(opath);
    if (atime == Py_None && mtime == Py_None) {
        /* optional time values not given */
        Py_BEGIN_ALLOW_THREADS
        res = utimensat(dirfd, path, NULL, flags);
        Py_END_ALLOW_THREADS
    }
    else if (!PyTuple_Check(atime) || PyTuple_Size(atime) != 2) {
        PyErr_SetString(PyExc_TypeError,
            "utimensat() arg 3 must be a tuple (atime_sec, atime_nsec)");
        Py_DECREF(opath);
        return NULL;
    }
    else if (!PyTuple_Check(mtime) || PyTuple_Size(mtime) != 2) {
        PyErr_SetString(PyExc_TypeError,
            "utimensat() arg 4 must be a tuple (mtime_sec, mtime_nsec)");
        Py_DECREF(opath);
        return NULL;
    }
    else {
        if (!PyArg_ParseTuple(atime, "ll:utimensat",
                &(buf[0].tv_sec), &(buf[0].tv_nsec))) {
            Py_DECREF(opath);
            return NULL;
        }
        if (!PyArg_ParseTuple(mtime, "ll:utimensat",
                &(buf[1].tv_sec), &(buf[1].tv_nsec))) {
            Py_DECREF(opath);
            return NULL;
        }
        Py_BEGIN_ALLOW_THREADS
        res = utimensat(dirfd, path, buf, flags);
        Py_END_ALLOW_THREADS
    }
    Py_DECREF(opath);
    if (res < 0) {
        return posix_error();
    }
    Py_RETURN_NONE;
}
#endif

#ifdef HAVE_MKFIFOAT
PyDoc_STRVAR(posix_mkfifoat__doc__,
"mkfifoat(dirfd, path, mode=0o666)\n\n\
Like mkfifo() but if path is relative, it is taken as relative to dirfd.\n\
If path is relative and dirfd is the special value AT_FDCWD, then path\n\
is interpreted relative to the current working directory.");

static PyObject *
posix_mkfifoat(PyObject *self, PyObject *args)
{
    PyObject *opath;
    char *filename;
    int mode = 0666;
    int res, dirfd;
    if (!PyArg_ParseTuple(args, "iO&|i:mkfifoat",
            &dirfd, PyUnicode_FSConverter, &opath, &mode))
        return NULL;
    filename = PyBytes_AS_STRING(opath);
    Py_BEGIN_ALLOW_THREADS
    res = mkfifoat(dirfd, filename, mode);
    Py_END_ALLOW_THREADS
    Py_DECREF(opath);
    if (res < 0)
        return posix_error();
    Py_RETURN_NONE;
}
#endif

10103
#ifdef USE_XATTRS
10104 10105 10106 10107 10108 10109 10110 10111 10112 10113 10114 10115 10116 10117 10118 10119 10120 10121 10122 10123 10124 10125 10126 10127 10128 10129 10130 10131 10132 10133 10134 10135 10136 10137 10138 10139 10140 10141 10142 10143 10144 10145 10146 10147 10148 10149 10150 10151 10152 10153 10154 10155 10156 10157 10158 10159 10160 10161 10162 10163 10164 10165 10166 10167 10168 10169 10170 10171 10172 10173 10174 10175 10176 10177 10178 10179 10180 10181 10182 10183 10184 10185 10186 10187 10188 10189 10190 10191 10192 10193 10194 10195 10196 10197 10198 10199 10200 10201 10202 10203 10204 10205 10206 10207 10208 10209 10210 10211 10212 10213 10214 10215 10216 10217 10218 10219 10220 10221 10222 10223 10224 10225 10226 10227 10228 10229 10230 10231 10232 10233 10234 10235 10236 10237 10238 10239 10240 10241 10242 10243 10244 10245 10246 10247 10248 10249 10250 10251 10252 10253 10254 10255 10256 10257 10258 10259 10260 10261 10262 10263 10264 10265 10266 10267 10268 10269 10270 10271 10272 10273 10274 10275 10276 10277 10278 10279 10280 10281 10282 10283 10284 10285 10286 10287 10288 10289 10290 10291 10292 10293 10294 10295 10296 10297 10298 10299 10300 10301 10302 10303 10304 10305 10306 10307 10308 10309 10310 10311 10312 10313 10314 10315 10316 10317 10318 10319 10320 10321 10322 10323 10324 10325 10326 10327 10328 10329 10330 10331 10332 10333 10334 10335 10336 10337 10338 10339 10340 10341 10342 10343 10344 10345 10346 10347 10348 10349 10350 10351 10352 10353 10354 10355 10356 10357 10358 10359 10360 10361 10362 10363 10364 10365 10366 10367 10368 10369 10370 10371 10372 10373 10374 10375 10376 10377 10378 10379 10380 10381 10382 10383 10384 10385 10386 10387 10388 10389 10390 10391 10392 10393 10394 10395 10396 10397 10398 10399 10400 10401 10402 10403 10404 10405 10406 10407 10408 10409 10410 10411 10412 10413 10414 10415 10416 10417 10418 10419 10420 10421 10422 10423 10424 10425 10426 10427 10428 10429 10430 10431 10432 10433 10434 10435 10436 10437 10438 10439 10440 10441 10442 10443 10444 10445 10446 10447 10448 10449 10450 10451 10452 10453 10454 10455 10456 10457 10458 10459 10460 10461 10462 10463 10464 10465 10466 10467 10468 10469 10470 10471 10472 10473 10474 10475 10476 10477 10478

static int
try_getxattr(const char *path, const char *name,
             ssize_t (*get)(const char *, const char *, void *, size_t),
             Py_ssize_t buf_size, PyObject **res)
{
    PyObject *value;
    Py_ssize_t len;

    assert(buf_size <= XATTR_SIZE_MAX);
    value = PyBytes_FromStringAndSize(NULL, buf_size);
    if (!value)
        return 0;
    Py_BEGIN_ALLOW_THREADS;
    len = get(path, name, PyBytes_AS_STRING(value), buf_size);
    Py_END_ALLOW_THREADS;
    if (len < 0) {
        Py_DECREF(value);
        if (errno == ERANGE) {
            value = NULL;
        }
        else {
            posix_error();
            return 0;
        }
    }
    else if (len != buf_size) {
        /* Can only shrink. */
        _PyBytes_Resize(&value, len);
    }
    *res = value;
    return 1;
}

static PyObject *
getxattr_common(const char *path, PyObject *name_obj,
                ssize_t (*get)(const char *, const char *, void *, size_t))
{
    PyObject *value;
    const char *name = PyBytes_AS_STRING(name_obj);

    /* Try a small value first. */
    if (!try_getxattr(path, name, get, 128, &value))
        return NULL;
    if (value)
        return value;
    /* Now the maximum possible one. */
    if (!try_getxattr(path, name, get, XATTR_SIZE_MAX, &value))
        return NULL;
    assert(value);
    return value;
}

PyDoc_STRVAR(posix_getxattr__doc__,
"getxattr(path, attr) -> value\n\n\
Return the value of extended attribute *name* on *path*.");

static PyObject *
posix_getxattr(PyObject *self, PyObject *args)
{
    PyObject *path, *res, *name;

    if (!PyArg_ParseTuple(args, "O&O&:getxattr", PyUnicode_FSConverter, &path,
                          PyUnicode_FSConverter, &name))
        return NULL;
    res = getxattr_common(PyBytes_AS_STRING(path), name, getxattr);
    Py_DECREF(path);
    Py_DECREF(name);
    return res;
}

PyDoc_STRVAR(posix_lgetxattr__doc__,
"lgetxattr(path, attr) -> value\n\n\
Like getxattr but don't follow symlinks.");

static PyObject *
posix_lgetxattr(PyObject *self, PyObject *args)
{
    PyObject *path, *res, *name;

    if (!PyArg_ParseTuple(args, "O&O&:lgetxattr", PyUnicode_FSConverter, &path,
                          PyUnicode_FSConverter, &name))
        return NULL;
    res = getxattr_common(PyBytes_AS_STRING(path), name, lgetxattr);
    Py_DECREF(path);
    Py_DECREF(name);
    return res;
}

static ssize_t
wrap_fgetxattr(const char *path, const char *name, void *value, size_t size)
{
    /* Hack to share code. */
    return fgetxattr((int)(Py_uintptr_t)path, name, value, size);
}

PyDoc_STRVAR(posix_fgetxattr__doc__,
"fgetxattr(fd, attr) -> value\n\n\
Like getxattr but operate on a fd instead of a path.");

static PyObject *
posix_fgetxattr(PyObject *self, PyObject *args)
{
    PyObject *res, *name;
    int fd;

    if (!PyArg_ParseTuple(args, "iO&:fgetxattr", &fd, PyUnicode_FSConverter, &name))
        return NULL;
    res = getxattr_common((const char *)(Py_uintptr_t)fd, name, wrap_fgetxattr);
    Py_DECREF(name);
    return res;
}

PyDoc_STRVAR(posix_setxattr__doc__,
"setxattr(path, attr, value, flags=0)\n\n\
Set extended attribute *attr* on *path* to *value*.");

static PyObject *
posix_setxattr(PyObject *self, PyObject *args)
{
    PyObject *path, *name;
    Py_buffer data;
    int flags = 0, err;

    if (!PyArg_ParseTuple(args, "O&O&y*|i:setxattr", PyUnicode_FSConverter,
                          &path, PyUnicode_FSConverter, &name, &data, &flags))
        return NULL;
    Py_BEGIN_ALLOW_THREADS;
    err = setxattr(PyBytes_AS_STRING(path), PyBytes_AS_STRING(name),
                   data.buf, data.len, flags);
    Py_END_ALLOW_THREADS;
    Py_DECREF(path);
    Py_DECREF(name);
    PyBuffer_Release(&data);
    if (err)
        return posix_error();
    Py_RETURN_NONE;
}

PyDoc_STRVAR(posix_lsetxattr__doc__,
"lsetxattr(path, attr, value, flags=0)\n\n\
Like setxattr but don't follow symlinks.");

static PyObject *
posix_lsetxattr(PyObject *self, PyObject *args)
{
    PyObject *path, *name;
    Py_buffer data;
    int flags = 0, err;

    if (!PyArg_ParseTuple(args, "O&O&y*|i:lsetxattr", PyUnicode_FSConverter,
                          &path, PyUnicode_FSConverter, &name, &data, &flags))
        return NULL;
    Py_BEGIN_ALLOW_THREADS;
    err = lsetxattr(PyBytes_AS_STRING(path), PyBytes_AS_STRING(name),
                    data.buf, data.len, flags);
    Py_END_ALLOW_THREADS;
    Py_DECREF(path);
    Py_DECREF(name);
    PyBuffer_Release(&data);
    if (err)
        return posix_error();
    Py_RETURN_NONE;
}

PyDoc_STRVAR(posix_fsetxattr__doc__,
"fsetxattr(fd, attr, value, flags=0)\n\n\
Like setxattr but operates on *fd* instead of a path.");

static PyObject *
posix_fsetxattr(PyObject *self, PyObject *args)
{
    Py_buffer data;
    const char *name;
    int fd, flags = 0, err;

    if (!PyArg_ParseTuple(args, "iO&y*|i:fsetxattr", &fd, PyUnicode_FSConverter,
                          &name, &data, &flags))
        return NULL;
    Py_BEGIN_ALLOW_THREADS;
    err = fsetxattr(fd, PyBytes_AS_STRING(name), data.buf, data.len, flags);
    Py_END_ALLOW_THREADS;
    Py_DECREF(name);
    PyBuffer_Release(&data);
    if (err)
        return posix_error();
    Py_RETURN_NONE;
}

PyDoc_STRVAR(posix_removexattr__doc__,
"removexattr(path, attr)\n\n\
Remove extended attribute *attr* on *path*.");

static PyObject *
posix_removexattr(PyObject *self, PyObject *args)
{
    PyObject *path, *name;
    int err;

    if (!PyArg_ParseTuple(args, "O&O&:removexattr", PyUnicode_FSConverter, &path,
                          PyUnicode_FSConverter, &name))
        return NULL;
    Py_BEGIN_ALLOW_THREADS;
    err = removexattr(PyBytes_AS_STRING(path), PyBytes_AS_STRING(name));
    Py_END_ALLOW_THREADS;
    Py_DECREF(path);
    Py_DECREF(name);
    if (err)
        return posix_error();
    Py_RETURN_NONE;
}

PyDoc_STRVAR(posix_lremovexattr__doc__,
"lremovexattr(path, attr)\n\n\
Like removexattr but don't follow symlinks.");

static PyObject *
posix_lremovexattr(PyObject *self, PyObject *args)
{
    PyObject *path, *name;
    int err;

    if (!PyArg_ParseTuple(args, "O&O&:lremovexattr", PyUnicode_FSConverter, &path,
                          PyUnicode_FSConverter, &name))
        return NULL;
    Py_BEGIN_ALLOW_THREADS;
    err = lremovexattr(PyBytes_AS_STRING(path), PyBytes_AS_STRING(name));
    Py_END_ALLOW_THREADS;
    Py_DECREF(path);
    Py_DECREF(name);
    if (err)
        return posix_error();
    Py_RETURN_NONE;
}

PyDoc_STRVAR(posix_fremovexattr__doc__,
"fremovexattr(fd, attr)\n\n\
Like removexattr but operates on a file descriptor.");

static PyObject *
posix_fremovexattr(PyObject *self, PyObject *args)
{
    PyObject *name;
    int fd, err;

    if (!PyArg_ParseTuple(args, "iO&:fremovexattr", &fd,
                          PyUnicode_FSConverter, &name))
        return NULL;
    Py_BEGIN_ALLOW_THREADS;
    err = fremovexattr(fd, PyBytes_AS_STRING(name));
    Py_END_ALLOW_THREADS;
    Py_DECREF(name);
    if (err)
        return posix_error();
    Py_RETURN_NONE;
}

static Py_ssize_t
try_listxattr(const char *path, ssize_t (*list)(const char *, char *, size_t),
              Py_ssize_t buf_size, char **buf)
{
    Py_ssize_t len;

    *buf = PyMem_MALLOC(buf_size);
    if (!*buf) {
        PyErr_NoMemory();
        return -1;
    }
    Py_BEGIN_ALLOW_THREADS;
    len = list(path, *buf, buf_size);
    Py_END_ALLOW_THREADS;
    if (len < 0) {
        PyMem_FREE(*buf);
        if (errno != ERANGE)
            posix_error();
        return -1;
    }
    return len;
}

static PyObject *
listxattr_common(const char *path, ssize_t (*list)(const char *, char *, size_t))
{
    PyObject *res, *attr;
    Py_ssize_t len, err, start, i;
    char *buf;

    len = try_listxattr(path, list, 256, &buf);
    if (len < 0) {
        if (PyErr_Occurred())
            return NULL;
        len = try_listxattr(path, list, XATTR_LIST_MAX, &buf);
        if (len < 0)
            return NULL;
    }
    res = PyList_New(0);
    if (!res) {
        PyMem_FREE(buf);
        return NULL;
    }
    for (start = i = 0; i < len; i++) {
        if (!buf[i]) {
            attr = PyUnicode_DecodeFSDefaultAndSize(&buf[start], i - start);
            if (!attr) {
                Py_DECREF(res);
                PyMem_FREE(buf);
                return NULL;
            }
            err = PyList_Append(res, attr);
            Py_DECREF(attr);
            if (err) {
                Py_DECREF(res);
                PyMem_FREE(buf);
                return NULL;
            }
            start = i + 1;
        }
    }
    PyMem_FREE(buf);
    return res;
}

PyDoc_STRVAR(posix_listxattr__doc__,
"listxattr(path)\n\n\
Return a list of extended attributes on *path*.");

static PyObject *
posix_listxattr(PyObject *self, PyObject *args)
{
    PyObject *path, *res;

    if (!PyArg_ParseTuple(args, "O&:listxattr", PyUnicode_FSConverter, &path))
        return NULL;
    res = listxattr_common(PyBytes_AS_STRING(path), listxattr);
    Py_DECREF(path);
    return res;
}

PyDoc_STRVAR(posix_llistxattr__doc__,
"llistxattr(path)\n\n\
Like listxattr but don't follow symlinks..");

static PyObject *
posix_llistxattr(PyObject *self, PyObject *args)
{
    PyObject *path, *res;

    if (!PyArg_ParseTuple(args, "O&:llistxattr", PyUnicode_FSConverter, &path))
        return NULL;
    res = listxattr_common(PyBytes_AS_STRING(path), llistxattr);
    Py_DECREF(path);
    return res;
}

static ssize_t
wrap_flistxattr(const char *path, char *buf, size_t len)
{
    /* Hack to share code. */
    return flistxattr((int)(Py_uintptr_t)path, buf, len);
}

PyDoc_STRVAR(posix_flistxattr__doc__,
"flistxattr(path)\n\n\
Like flistxattr but operates on a file descriptor.");

static PyObject *
posix_flistxattr(PyObject *self, PyObject *args)
{
    long fd;

    if (!PyArg_ParseTuple(args, "i:flistxattr", &fd))
        return NULL;
    return listxattr_common((const char *)(Py_uintptr_t)fd, wrap_flistxattr);
}

10479
#endif /* USE_XATTRS */
10480

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10481
static PyMethodDef posix_methods[] = {
10482
    {"access",          posix_access, METH_VARARGS, posix_access__doc__},
10483
#ifdef HAVE_TTYNAME
10484
    {"ttyname",         posix_ttyname, METH_VARARGS, posix_ttyname__doc__},
10485
#endif
10486
    {"chdir",           posix_chdir, METH_VARARGS, posix_chdir__doc__},
10487
#ifdef HAVE_CHFLAGS
10488
    {"chflags",         posix_chflags, METH_VARARGS, posix_chflags__doc__},
10489
#endif /* HAVE_CHFLAGS */
10490
    {"chmod",           posix_chmod, METH_VARARGS, posix_chmod__doc__},
10491
#ifdef HAVE_FCHMOD
10492
    {"fchmod",          posix_fchmod, METH_VARARGS, posix_fchmod__doc__},
10493
#endif /* HAVE_FCHMOD */
10494
#ifdef HAVE_CHOWN
10495
    {"chown",           posix_chown, METH_VARARGS, posix_chown__doc__},
10496
#endif /* HAVE_CHOWN */
10497
#ifdef HAVE_LCHMOD
10498
    {"lchmod",          posix_lchmod, METH_VARARGS, posix_lchmod__doc__},
10499 10500
#endif /* HAVE_LCHMOD */
#ifdef HAVE_FCHOWN
10501
    {"fchown",          posix_fchown, METH_VARARGS, posix_fchown__doc__},
10502
#endif /* HAVE_FCHOWN */
10503
#ifdef HAVE_LCHFLAGS
10504
    {"lchflags",        posix_lchflags, METH_VARARGS, posix_lchflags__doc__},
10505
#endif /* HAVE_LCHFLAGS */
10506
#ifdef HAVE_LCHOWN
10507
    {"lchown",          posix_lchown, METH_VARARGS, posix_lchown__doc__},
10508
#endif /* HAVE_LCHOWN */
10509
#ifdef HAVE_CHROOT
10510
    {"chroot",          posix_chroot, METH_VARARGS, posix_chroot__doc__},
10511
#endif
10512
#ifdef HAVE_CTERMID
10513
    {"ctermid",         posix_ctermid, METH_NOARGS, posix_ctermid__doc__},
10514
#endif
10515
#ifdef HAVE_GETCWD
10516 10517 10518 10519
    {"getcwd",          (PyCFunction)posix_getcwd_unicode,
    METH_NOARGS, posix_getcwd__doc__},
    {"getcwdb",         (PyCFunction)posix_getcwd_bytes,
    METH_NOARGS, posix_getcwdb__doc__},
10520
#endif
10521
#ifdef HAVE_LINK
10522
    {"link",            posix_link, METH_VARARGS, posix_link__doc__},
10523
#endif /* HAVE_LINK */
10524
    {"listdir",         posix_listdir, METH_VARARGS, posix_listdir__doc__},
10525
#ifdef HAVE_FDOPENDIR
10526
    {"flistdir",       posix_flistdir, METH_VARARGS, posix_flistdir__doc__},
10527
#endif
10528 10529
    {"lstat",           posix_lstat, METH_VARARGS, posix_lstat__doc__},
    {"mkdir",           posix_mkdir, METH_VARARGS, posix_mkdir__doc__},
10530
#ifdef HAVE_NICE
10531
    {"nice",            posix_nice, METH_VARARGS, posix_nice__doc__},
10532
#endif /* HAVE_NICE */
10533 10534 10535 10536 10537 10538
#ifdef HAVE_GETPRIORITY
    {"getpriority",     posix_getpriority, METH_VARARGS, posix_getpriority__doc__},
#endif /* HAVE_GETPRIORITY */
#ifdef HAVE_SETPRIORITY
    {"setpriority",     posix_setpriority, METH_VARARGS, posix_setpriority__doc__},
#endif /* HAVE_SETPRIORITY */
10539
#ifdef HAVE_READLINK
10540
    {"readlink",        posix_readlink, METH_VARARGS, posix_readlink__doc__},
10541
#endif /* HAVE_READLINK */
10542
#if !defined(HAVE_READLINK) && defined(MS_WINDOWS)
10543
    {"readlink",        win_readlink, METH_VARARGS, win_readlink__doc__},
10544
#endif /* !defined(HAVE_READLINK) && defined(MS_WINDOWS) */
10545
    {"rename",          posix_rename, METH_VARARGS, posix_rename__doc__},
10546
    {"replace",         posix_replace, METH_VARARGS, posix_replace__doc__},
10547 10548
    {"rmdir",           posix_rmdir, METH_VARARGS, posix_rmdir__doc__},
    {"stat",            posix_stat, METH_VARARGS, posix_stat__doc__},
10549
    {"stat_float_times", stat_float_times, METH_VARARGS, stat_float_times__doc__},
10550
#if defined(HAVE_SYMLINK) && !defined(MS_WINDOWS)
10551
    {"symlink",         posix_symlink, METH_VARARGS, posix_symlink__doc__},
10552
#endif /* HAVE_SYMLINK */
10553
#if defined(HAVE_SYMLINK) && defined(MS_WINDOWS)
10554
    {"symlink", (PyCFunction)win_symlink, METH_VARARGS | METH_KEYWORDS,
10555 10556
                 win_symlink__doc__},
#endif /* defined(HAVE_SYMLINK) && defined(MS_WINDOWS) */
10557
#ifdef HAVE_SYSTEM
10558
    {"system",          posix_system, METH_VARARGS, posix_system__doc__},
10559
#endif
10560
    {"umask",           posix_umask, METH_VARARGS, posix_umask__doc__},
10561
#ifdef HAVE_UNAME
10562
    {"uname",           posix_uname, METH_NOARGS, posix_uname__doc__},
10563
#endif /* HAVE_UNAME */
10564 10565 10566
    {"unlink",          posix_unlink, METH_VARARGS, posix_unlink__doc__},
    {"remove",          posix_unlink, METH_VARARGS, posix_remove__doc__},
    {"utime",           posix_utime, METH_VARARGS, posix_utime__doc__},
10567 10568 10569 10570 10571 10572 10573 10574 10575
#ifdef HAVE_FUTIMES
    {"futimes",         posix_futimes, METH_VARARGS, posix_futimes__doc__},
#endif
#ifdef HAVE_LUTIMES
    {"lutimes",         posix_lutimes, METH_VARARGS, posix_lutimes__doc__},
#endif
#ifdef HAVE_FUTIMENS
    {"futimens",        posix_futimens, METH_VARARGS, posix_futimens__doc__},
#endif
10576
#ifdef HAVE_TIMES
10577
    {"times",           posix_times, METH_NOARGS, posix_times__doc__},
10578
#endif /* HAVE_TIMES */
10579
    {"_exit",           posix__exit, METH_VARARGS, posix__exit__doc__},
10580
#ifdef HAVE_EXECV
10581 10582
    {"execv",           posix_execv, METH_VARARGS, posix_execv__doc__},
    {"execve",          posix_execve, METH_VARARGS, posix_execve__doc__},
10583
#endif /* HAVE_EXECV */
10584 10585 10586
#ifdef HAVE_FEXECVE
    {"fexecve",          posix_fexecve, METH_VARARGS, posix_fexecve__doc__},
#endif
10587
#ifdef HAVE_SPAWNV
10588 10589
    {"spawnv",          posix_spawnv, METH_VARARGS, posix_spawnv__doc__},
    {"spawnve",         posix_spawnve, METH_VARARGS, posix_spawnve__doc__},
10590
#if defined(PYOS_OS2)
10591 10592
    {"spawnvp",         posix_spawnvp, METH_VARARGS, posix_spawnvp__doc__},
    {"spawnvpe",        posix_spawnvpe, METH_VARARGS, posix_spawnvpe__doc__},
10593
#endif /* PYOS_OS2 */
10594
#endif /* HAVE_SPAWNV */
10595
#ifdef HAVE_FORK1
10596
    {"fork1",       posix_fork1, METH_NOARGS, posix_fork1__doc__},
10597
#endif /* HAVE_FORK1 */
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10598
#ifdef HAVE_FORK
10599
    {"fork",            posix_fork, METH_NOARGS, posix_fork__doc__},
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#endif /* HAVE_FORK */
10601
#ifdef HAVE_SCHED_H
10602
#ifdef HAVE_SCHED_GET_PRIORITY_MAX
10603 10604
    {"sched_get_priority_max", posix_sched_get_priority_max, METH_VARARGS, posix_sched_get_priority_max__doc__},
    {"sched_get_priority_min", posix_sched_get_priority_min, METH_VARARGS, posix_sched_get_priority_min__doc__},
10605
#endif
10606
#ifdef HAVE_SCHED_SETPARAM
10607
    {"sched_getparam", posix_sched_getparam, METH_VARARGS, posix_sched_getparam__doc__},
10608 10609
#endif
#ifdef HAVE_SCHED_SETSCHEDULER
10610
    {"sched_getscheduler", posix_sched_getscheduler, METH_VARARGS, posix_sched_getscheduler__doc__},
10611 10612
#endif
#ifdef HAVE_SCHED_RR_GET_INTERVAL
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    {"sched_rr_get_interval", posix_sched_rr_get_interval, METH_VARARGS, posix_sched_rr_get_interval__doc__},
10614 10615
#endif
#ifdef HAVE_SCHED_SETPARAM
10616
    {"sched_setparam", posix_sched_setparam, METH_VARARGS, posix_sched_setparam__doc__},
10617 10618
#endif
#ifdef HAVE_SCHED_SETSCHEDULER
10619
    {"sched_setscheduler", posix_sched_setscheduler, METH_VARARGS, posix_sched_setscheduler__doc__},
10620
#endif
10621
    {"sched_yield",     posix_sched_yield, METH_NOARGS, posix_sched_yield__doc__},
10622
#ifdef HAVE_SCHED_SETAFFINITY
10623 10624 10625
    {"sched_setaffinity", posix_sched_setaffinity, METH_VARARGS, posix_sched_setaffinity__doc__},
    {"sched_getaffinity", posix_sched_getaffinity, METH_VARARGS, posix_sched_getaffinity__doc__},
#endif
10626
#endif /* HAVE_SCHED_H */
10627
#if defined(HAVE_OPENPTY) || defined(HAVE__GETPTY) || defined(HAVE_DEV_PTMX)
10628
    {"openpty",         posix_openpty, METH_NOARGS, posix_openpty__doc__},
10629
#endif /* HAVE_OPENPTY || HAVE__GETPTY || HAVE_DEV_PTMX */
10630
#ifdef HAVE_FORKPTY
10631
    {"forkpty",         posix_forkpty, METH_NOARGS, posix_forkpty__doc__},
10632
#endif /* HAVE_FORKPTY */
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10633
#ifdef HAVE_GETEGID
10634
    {"getegid",         posix_getegid, METH_NOARGS, posix_getegid__doc__},
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10635 10636
#endif /* HAVE_GETEGID */
#ifdef HAVE_GETEUID
10637
    {"geteuid",         posix_geteuid, METH_NOARGS, posix_geteuid__doc__},
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#endif /* HAVE_GETEUID */
#ifdef HAVE_GETGID
10640
    {"getgid",          posix_getgid, METH_NOARGS, posix_getgid__doc__},
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10641
#endif /* HAVE_GETGID */
10642 10643 10644
#ifdef HAVE_GETGROUPLIST
    {"getgrouplist",    posix_getgrouplist, METH_VARARGS, posix_getgrouplist__doc__},
#endif
10645
#ifdef HAVE_GETGROUPS
10646
    {"getgroups",       posix_getgroups, METH_NOARGS, posix_getgroups__doc__},
10647
#endif
10648
    {"getpid",          posix_getpid, METH_NOARGS, posix_getpid__doc__},
10649
#ifdef HAVE_GETPGRP
10650
    {"getpgrp",         posix_getpgrp, METH_NOARGS, posix_getpgrp__doc__},
10651
#endif /* HAVE_GETPGRP */
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10652
#ifdef HAVE_GETPPID
10653
    {"getppid",         posix_getppid, METH_NOARGS, posix_getppid__doc__},
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#endif /* HAVE_GETPPID */
#ifdef HAVE_GETUID
10656
    {"getuid",          posix_getuid, METH_NOARGS, posix_getuid__doc__},
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10657
#endif /* HAVE_GETUID */
10658
#ifdef HAVE_GETLOGIN
10659
    {"getlogin",        posix_getlogin, METH_NOARGS, posix_getlogin__doc__},
10660
#endif
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10661
#ifdef HAVE_KILL
10662
    {"kill",            posix_kill, METH_VARARGS, posix_kill__doc__},
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10663
#endif /* HAVE_KILL */
10664
#ifdef HAVE_KILLPG
10665
    {"killpg",          posix_killpg, METH_VARARGS, posix_killpg__doc__},
10666
#endif /* HAVE_KILLPG */
10667
#ifdef HAVE_PLOCK
10668
    {"plock",           posix_plock, METH_VARARGS, posix_plock__doc__},
10669
#endif /* HAVE_PLOCK */
10670
#ifdef MS_WINDOWS
10671 10672
    {"startfile",       win32_startfile, METH_VARARGS, win32_startfile__doc__},
    {"kill",    win32_kill, METH_VARARGS, win32_kill__doc__},
10673
    {"link",    win32_link, METH_VARARGS, win32_link__doc__},
10674
#endif
10675
#ifdef HAVE_SETUID
10676
    {"setuid",          posix_setuid, METH_VARARGS, posix_setuid__doc__},
10677
#endif /* HAVE_SETUID */
10678
#ifdef HAVE_SETEUID
10679
    {"seteuid",         posix_seteuid, METH_VARARGS, posix_seteuid__doc__},
10680 10681
#endif /* HAVE_SETEUID */
#ifdef HAVE_SETEGID
10682
    {"setegid",         posix_setegid, METH_VARARGS, posix_setegid__doc__},
10683 10684
#endif /* HAVE_SETEGID */
#ifdef HAVE_SETREUID
10685
    {"setreuid",        posix_setreuid, METH_VARARGS, posix_setreuid__doc__},
10686 10687
#endif /* HAVE_SETREUID */
#ifdef HAVE_SETREGID
10688
    {"setregid",        posix_setregid, METH_VARARGS, posix_setregid__doc__},
10689
#endif /* HAVE_SETREGID */
10690
#ifdef HAVE_SETGID
10691
    {"setgid",          posix_setgid, METH_VARARGS, posix_setgid__doc__},
10692
#endif /* HAVE_SETGID */
10693
#ifdef HAVE_SETGROUPS
10694
    {"setgroups",       posix_setgroups, METH_O, posix_setgroups__doc__},
10695
#endif /* HAVE_SETGROUPS */
10696
#ifdef HAVE_INITGROUPS
10697
    {"initgroups",      posix_initgroups, METH_VARARGS, posix_initgroups__doc__},
10698
#endif /* HAVE_INITGROUPS */
10699
#ifdef HAVE_GETPGID
10700
    {"getpgid",         posix_getpgid, METH_VARARGS, posix_getpgid__doc__},
10701
#endif /* HAVE_GETPGID */
10702
#ifdef HAVE_SETPGRP
10703
    {"setpgrp",         posix_setpgrp, METH_NOARGS, posix_setpgrp__doc__},
10704
#endif /* HAVE_SETPGRP */
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10705
#ifdef HAVE_WAIT
10706
    {"wait",            posix_wait, METH_NOARGS, posix_wait__doc__},
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10707
#endif /* HAVE_WAIT */
10708
#ifdef HAVE_WAIT3
10709
    {"wait3",           posix_wait3, METH_VARARGS, posix_wait3__doc__},
10710 10711
#endif /* HAVE_WAIT3 */
#ifdef HAVE_WAIT4
10712
    {"wait4",           posix_wait4, METH_VARARGS, posix_wait4__doc__},
10713
#endif /* HAVE_WAIT4 */
10714 10715 10716
#if defined(HAVE_WAITID) && !defined(__APPLE__)
    {"waitid",          posix_waitid, METH_VARARGS, posix_waitid__doc__},
#endif
10717
#if defined(HAVE_WAITPID) || defined(HAVE_CWAIT)
10718
    {"waitpid",         posix_waitpid, METH_VARARGS, posix_waitpid__doc__},
10719
#endif /* HAVE_WAITPID */
10720
#ifdef HAVE_GETSID
10721
    {"getsid",          posix_getsid, METH_VARARGS, posix_getsid__doc__},
10722
#endif /* HAVE_GETSID */
10723
#ifdef HAVE_SETSID
10724
    {"setsid",          posix_setsid, METH_NOARGS, posix_setsid__doc__},
10725
#endif /* HAVE_SETSID */
10726
#ifdef HAVE_SETPGID
10727
    {"setpgid",         posix_setpgid, METH_VARARGS, posix_setpgid__doc__},
10728
#endif /* HAVE_SETPGID */
10729
#ifdef HAVE_TCGETPGRP
10730
    {"tcgetpgrp",       posix_tcgetpgrp, METH_VARARGS, posix_tcgetpgrp__doc__},
10731
#endif /* HAVE_TCGETPGRP */
10732
#ifdef HAVE_TCSETPGRP
10733
    {"tcsetpgrp",       posix_tcsetpgrp, METH_VARARGS, posix_tcsetpgrp__doc__},
10734
#endif /* HAVE_TCSETPGRP */
10735 10736 10737 10738 10739 10740
    {"open",            posix_open, METH_VARARGS, posix_open__doc__},
    {"close",           posix_close, METH_VARARGS, posix_close__doc__},
    {"closerange",      posix_closerange, METH_VARARGS, posix_closerange__doc__},
    {"device_encoding", device_encoding, METH_VARARGS, device_encoding__doc__},
    {"dup",             posix_dup, METH_VARARGS, posix_dup__doc__},
    {"dup2",            posix_dup2, METH_VARARGS, posix_dup2__doc__},
10741 10742 10743
#ifdef HAVE_LOCKF
    {"lockf",           posix_lockf, METH_VARARGS, posix_lockf__doc__},
#endif
10744 10745
    {"lseek",           posix_lseek, METH_VARARGS, posix_lseek__doc__},
    {"read",            posix_read, METH_VARARGS, posix_read__doc__},
10746 10747 10748 10749 10750 10751
#ifdef HAVE_READV
    {"readv",           posix_readv, METH_VARARGS, posix_readv__doc__},
#endif
#ifdef HAVE_PREAD
    {"pread",           posix_pread, METH_VARARGS, posix_pread__doc__},
#endif
10752
    {"write",           posix_write, METH_VARARGS, posix_write__doc__},
10753 10754 10755 10756 10757 10758
#ifdef HAVE_WRITEV
    {"writev",          posix_writev, METH_VARARGS, posix_writev__doc__},
#endif
#ifdef HAVE_PWRITE
    {"pwrite",          posix_pwrite, METH_VARARGS, posix_pwrite__doc__},
#endif
10759 10760 10761 10762
#ifdef HAVE_SENDFILE
    {"sendfile",        (PyCFunction)posix_sendfile, METH_VARARGS | METH_KEYWORDS,
                            posix_sendfile__doc__},
#endif
10763 10764
    {"fstat",           posix_fstat, METH_VARARGS, posix_fstat__doc__},
    {"isatty",          posix_isatty, METH_VARARGS, posix_isatty__doc__},
10765
#ifdef HAVE_PIPE
10766
    {"pipe",            posix_pipe, METH_NOARGS, posix_pipe__doc__},
10767
#endif
10768
#ifdef HAVE_PIPE2
10769
    {"pipe2",           posix_pipe2, METH_O, posix_pipe2__doc__},
10770
#endif
10771
#ifdef HAVE_MKFIFO
10772
    {"mkfifo",          posix_mkfifo, METH_VARARGS, posix_mkfifo__doc__},
10773
#endif
10774
#if defined(HAVE_MKNOD) && defined(HAVE_MAKEDEV)
10775
    {"mknod",           posix_mknod, METH_VARARGS, posix_mknod__doc__},
10776
#endif
10777
#ifdef HAVE_DEVICE_MACROS
10778 10779 10780
    {"major",           posix_major, METH_VARARGS, posix_major__doc__},
    {"minor",           posix_minor, METH_VARARGS, posix_minor__doc__},
    {"makedev",         posix_makedev, METH_VARARGS, posix_makedev__doc__},
10781
#endif
10782
#ifdef HAVE_FTRUNCATE
10783
    {"ftruncate",       posix_ftruncate, METH_VARARGS, posix_ftruncate__doc__},
10784
#endif
10785 10786 10787 10788 10789 10790 10791 10792 10793
#ifdef HAVE_TRUNCATE
    {"truncate",        posix_truncate, METH_VARARGS, posix_truncate__doc__},
#endif
#ifdef HAVE_POSIX_FALLOCATE
    {"posix_fallocate", posix_posix_fallocate, METH_VARARGS, posix_posix_fallocate__doc__},
#endif
#ifdef HAVE_POSIX_FADVISE
    {"posix_fadvise",   posix_posix_fadvise, METH_VARARGS, posix_posix_fadvise__doc__},
#endif
10794
#ifdef HAVE_PUTENV
10795
    {"putenv",          posix_putenv, METH_VARARGS, posix_putenv__doc__},
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10796
#endif
10797
#ifdef HAVE_UNSETENV
10798
    {"unsetenv",        posix_unsetenv, METH_VARARGS, posix_unsetenv__doc__},
10799
#endif
10800
    {"strerror",        posix_strerror, METH_VARARGS, posix_strerror__doc__},
10801
#ifdef HAVE_FCHDIR
10802
    {"fchdir",          posix_fchdir, METH_O, posix_fchdir__doc__},
10803
#endif
10804
#ifdef HAVE_FSYNC
10805
    {"fsync",       posix_fsync, METH_O, posix_fsync__doc__},
10806
#endif
10807 10808 10809
#ifdef HAVE_SYNC
    {"sync",        posix_sync, METH_NOARGS, posix_sync__doc__},
#endif
10810
#ifdef HAVE_FDATASYNC
10811
    {"fdatasync",   posix_fdatasync,  METH_O, posix_fdatasync__doc__},
10812
#endif
10813
#ifdef HAVE_SYS_WAIT_H
10814
#ifdef WCOREDUMP
10815
    {"WCOREDUMP",       posix_WCOREDUMP, METH_VARARGS, posix_WCOREDUMP__doc__},
10816
#endif /* WCOREDUMP */
10817
#ifdef WIFCONTINUED
10818
    {"WIFCONTINUED",posix_WIFCONTINUED, METH_VARARGS, posix_WIFCONTINUED__doc__},
10819
#endif /* WIFCONTINUED */
10820
#ifdef WIFSTOPPED
10821
    {"WIFSTOPPED",      posix_WIFSTOPPED, METH_VARARGS, posix_WIFSTOPPED__doc__},
10822 10823
#endif /* WIFSTOPPED */
#ifdef WIFSIGNALED
10824
    {"WIFSIGNALED",     posix_WIFSIGNALED, METH_VARARGS, posix_WIFSIGNALED__doc__},
10825 10826
#endif /* WIFSIGNALED */
#ifdef WIFEXITED
10827
    {"WIFEXITED",       posix_WIFEXITED, METH_VARARGS, posix_WIFEXITED__doc__},
10828 10829
#endif /* WIFEXITED */
#ifdef WEXITSTATUS
10830
    {"WEXITSTATUS",     posix_WEXITSTATUS, METH_VARARGS, posix_WEXITSTATUS__doc__},
10831 10832
#endif /* WEXITSTATUS */
#ifdef WTERMSIG
10833
    {"WTERMSIG",        posix_WTERMSIG, METH_VARARGS, posix_WTERMSIG__doc__},
10834 10835
#endif /* WTERMSIG */
#ifdef WSTOPSIG
10836
    {"WSTOPSIG",        posix_WSTOPSIG, METH_VARARGS, posix_WSTOPSIG__doc__},
10837 10838
#endif /* WSTOPSIG */
#endif /* HAVE_SYS_WAIT_H */
10839
#if defined(HAVE_FSTATVFS) && defined(HAVE_SYS_STATVFS_H)
10840
    {"fstatvfs",        posix_fstatvfs, METH_VARARGS, posix_fstatvfs__doc__},
10841
#endif
10842
#if defined(HAVE_STATVFS) && defined(HAVE_SYS_STATVFS_H)
10843
    {"statvfs",         posix_statvfs, METH_VARARGS, posix_statvfs__doc__},
10844
#endif
10845
#ifdef HAVE_CONFSTR
10846
    {"confstr",         posix_confstr, METH_VARARGS, posix_confstr__doc__},
10847 10848
#endif
#ifdef HAVE_SYSCONF
10849
    {"sysconf",         posix_sysconf, METH_VARARGS, posix_sysconf__doc__},
10850 10851
#endif
#ifdef HAVE_FPATHCONF
10852
    {"fpathconf",       posix_fpathconf, METH_VARARGS, posix_fpathconf__doc__},
10853 10854
#endif
#ifdef HAVE_PATHCONF
10855
    {"pathconf",        posix_pathconf, METH_VARARGS, posix_pathconf__doc__},
10856
#endif
10857
    {"abort",           posix_abort, METH_NOARGS, posix_abort__doc__},
10858
#ifdef MS_WINDOWS
10859
    {"_getfullpathname",        posix__getfullpathname, METH_VARARGS, NULL},
10860
    {"_getfinalpathname",       posix__getfinalpathname, METH_VARARGS, NULL},
10861
    {"_getfileinformation",     posix__getfileinformation, METH_VARARGS, NULL},
10862
    {"_isdir",                  posix__isdir, METH_VARARGS, posix__isdir__doc__},
10863
    {"_getdiskusage",           win32__getdiskusage, METH_VARARGS, win32__getdiskusage__doc__},
10864 10865
#endif
#ifdef HAVE_GETLOADAVG
10866
    {"getloadavg",      posix_getloadavg, METH_NOARGS, posix_getloadavg__doc__},
10867
#endif
10868
 #ifdef MS_WINDOWS
10869
    {"urandom", win32_urandom, METH_VARARGS, win32_urandom__doc__},
10870 10871
 #endif
 #ifdef __VMS
10872
    {"urandom", vms_urandom, METH_VARARGS, vms_urandom__doc__},
10873
 #endif
10874
#ifdef HAVE_SETRESUID
10875
    {"setresuid",       posix_setresuid, METH_VARARGS, posix_setresuid__doc__},
10876 10877
#endif
#ifdef HAVE_SETRESGID
10878
    {"setresgid",       posix_setresgid, METH_VARARGS, posix_setresgid__doc__},
10879 10880
#endif
#ifdef HAVE_GETRESUID
10881
    {"getresuid",       posix_getresuid, METH_NOARGS, posix_getresuid__doc__},
10882 10883
#endif
#ifdef HAVE_GETRESGID
10884
    {"getresgid",       posix_getresgid, METH_NOARGS, posix_getresgid__doc__},
10885 10886
#endif

10887 10888 10889 10890 10891 10892 10893 10894 10895 10896 10897 10898 10899 10900 10901 10902 10903 10904 10905 10906 10907 10908 10909 10910 10911 10912 10913 10914 10915 10916 10917 10918 10919 10920 10921 10922 10923 10924 10925 10926 10927
/* posix *at family of functions */
#ifdef HAVE_FACCESSAT
    {"faccessat",       posix_faccessat, METH_VARARGS, posix_faccessat__doc__},
#endif
#ifdef HAVE_FCHMODAT
    {"fchmodat",        posix_fchmodat, METH_VARARGS, posix_fchmodat__doc__},
#endif /* HAVE_FCHMODAT */
#ifdef HAVE_FCHOWNAT
    {"fchownat",        posix_fchownat, METH_VARARGS, posix_fchownat__doc__},
#endif /* HAVE_FCHOWNAT */
#ifdef HAVE_FSTATAT
    {"fstatat",         posix_fstatat, METH_VARARGS, posix_fstatat__doc__},
#endif
#ifdef HAVE_FUTIMESAT
    {"futimesat",       posix_futimesat, METH_VARARGS, posix_futimesat__doc__},
#endif
#ifdef HAVE_LINKAT
    {"linkat",          posix_linkat, METH_VARARGS, posix_linkat__doc__},
#endif /* HAVE_LINKAT */
#ifdef HAVE_MKDIRAT
    {"mkdirat",         posix_mkdirat, METH_VARARGS, posix_mkdirat__doc__},
#endif
#if defined(HAVE_MKNODAT) && defined(HAVE_MAKEDEV)
    {"mknodat",         posix_mknodat, METH_VARARGS, posix_mknodat__doc__},
#endif
#ifdef HAVE_OPENAT
    {"openat",      posix_openat, METH_VARARGS, posix_openat__doc__},
#endif
#ifdef HAVE_READLINKAT
    {"readlinkat",      posix_readlinkat, METH_VARARGS, posix_readlinkat__doc__},
#endif /* HAVE_READLINKAT */
#ifdef HAVE_RENAMEAT
    {"renameat",        posix_renameat, METH_VARARGS, posix_renameat__doc__},
#endif
#if HAVE_SYMLINKAT
    {"symlinkat",       posix_symlinkat, METH_VARARGS, posix_symlinkat__doc__},
#endif /* HAVE_SYMLINKAT */
#ifdef HAVE_UNLINKAT
    {"unlinkat",        posix_unlinkat, METH_VARARGS, posix_unlinkat__doc__},
#endif
#ifdef HAVE_UTIMENSAT
10928 10929
    {"utimensat",       (PyCFunction)posix_utimensat,
                        METH_VARARGS | METH_KEYWORDS,
10930
                        posix_utimensat__doc__},
10931 10932 10933
#endif
#ifdef HAVE_MKFIFOAT
    {"mkfifoat",        posix_mkfifoat, METH_VARARGS, posix_mkfifoat__doc__},
10934
#endif
10935
#ifdef USE_XATTRS
10936 10937 10938 10939 10940 10941 10942 10943 10944 10945 10946 10947
    {"setxattr", posix_setxattr, METH_VARARGS, posix_setxattr__doc__},
    {"lsetxattr", posix_lsetxattr, METH_VARARGS, posix_lsetxattr__doc__},
    {"fsetxattr", posix_fsetxattr, METH_VARARGS, posix_fsetxattr__doc__},
    {"getxattr", posix_getxattr, METH_VARARGS, posix_getxattr__doc__},
    {"lgetxattr", posix_lgetxattr, METH_VARARGS, posix_lgetxattr__doc__},
    {"fgetxattr", posix_fgetxattr, METH_VARARGS, posix_fgetxattr__doc__},
    {"removexattr", posix_removexattr, METH_VARARGS, posix_removexattr__doc__},
    {"lremovexattr", posix_lremovexattr, METH_VARARGS, posix_lremovexattr__doc__},
    {"fremovexattr", posix_fremovexattr, METH_VARARGS, posix_fremovexattr__doc__},
    {"listxattr", posix_listxattr, METH_VARARGS, posix_listxattr__doc__},
    {"llistxattr", posix_llistxattr, METH_VARARGS, posix_llistxattr__doc__},
    {"flistxattr", posix_flistxattr, METH_VARARGS, posix_flistxattr__doc__},
10948
#endif
10949
    {NULL,              NULL}            /* Sentinel */
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10950 10951 10952
};


10953
static int
10954
ins(PyObject *module, char *symbol, long value)
10955
{
10956
    return PyModule_AddIntConstant(module, symbol, value);
10957 10958
}

10959 10960
#if defined(PYOS_OS2)
/* Insert Platform-Specific Constant Values (Strings & Numbers) of Common Use */
10961
static int insertvalues(PyObject *module)
10962 10963 10964 10965
{
    APIRET    rc;
    ULONG     values[QSV_MAX+1];
    PyObject *v;
10966
    char     *ver, tmp[50];
10967 10968

    Py_BEGIN_ALLOW_THREADS
10969
    rc = DosQuerySysInfo(1L, QSV_MAX, &values[1], sizeof(ULONG) * QSV_MAX);
10970 10971 10972 10973 10974 10975 10976
    Py_END_ALLOW_THREADS

    if (rc != NO_ERROR) {
        os2_error(rc);
        return -1;
    }

10977 10978 10979 10980 10981 10982 10983
    if (ins(module, "meminstalled", values[QSV_TOTPHYSMEM])) return -1;
    if (ins(module, "memkernel",    values[QSV_TOTRESMEM])) return -1;
    if (ins(module, "memvirtual",   values[QSV_TOTAVAILMEM])) return -1;
    if (ins(module, "maxpathlen",   values[QSV_MAX_PATH_LENGTH])) return -1;
    if (ins(module, "maxnamelen",   values[QSV_MAX_COMP_LENGTH])) return -1;
    if (ins(module, "revision",     values[QSV_VERSION_REVISION])) return -1;
    if (ins(module, "timeslice",    values[QSV_MIN_SLICE])) return -1;
10984 10985 10986 10987 10988 10989 10990 10991 10992

    switch (values[QSV_VERSION_MINOR]) {
    case 0:  ver = "2.00"; break;
    case 10: ver = "2.10"; break;
    case 11: ver = "2.11"; break;
    case 30: ver = "3.00"; break;
    case 40: ver = "4.00"; break;
    case 50: ver = "5.00"; break;
    default:
10993
        PyOS_snprintf(tmp, sizeof(tmp),
10994
                      "%d-%d", values[QSV_VERSION_MAJOR],
10995
                      values[QSV_VERSION_MINOR]);
10996 10997 10998 10999
        ver = &tmp[0];
    }

    /* Add Indicator of the Version of the Operating System */
11000
    if (PyModule_AddStringConstant(module, "version", tmp) < 0)
11001 11002 11003 11004 11005 11006 11007
        return -1;

    /* Add Indicator of Which Drive was Used to Boot the System */
    tmp[0] = 'A' + values[QSV_BOOT_DRIVE] - 1;
    tmp[1] = ':';
    tmp[2] = '\0';

11008
    return PyModule_AddStringConstant(module, "bootdrive", tmp);
11009 11010 11011
}
#endif

11012
#if defined(HAVE_SYMLINK) && defined(MS_WINDOWS)
11013
static int
11014 11015 11016 11017 11018 11019 11020 11021
enable_symlink()
{
    HANDLE tok;
    TOKEN_PRIVILEGES tok_priv;
    LUID luid;
    int meth_idx = 0;

    if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &tok))
11022
        return 0;
11023 11024

    if (!LookupPrivilegeValue(NULL, SE_CREATE_SYMBOLIC_LINK_NAME, &luid))
11025
        return 0;
11026 11027 11028 11029 11030 11031 11032 11033

    tok_priv.PrivilegeCount = 1;
    tok_priv.Privileges[0].Luid = luid;
    tok_priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

    if (!AdjustTokenPrivileges(tok, FALSE, &tok_priv,
                               sizeof(TOKEN_PRIVILEGES),
                               (PTOKEN_PRIVILEGES) NULL, (PDWORD) NULL))
11034
        return 0;
11035

11036 11037
    /* ERROR_NOT_ALL_ASSIGNED returned when the privilege can't be assigned. */
    return GetLastError() == ERROR_NOT_ALL_ASSIGNED ? 0 : 1;
11038 11039 11040
}
#endif /* defined(HAVE_SYMLINK) && defined(MS_WINDOWS) */

11041
static int
11042
all_ins(PyObject *d)
11043
{
11044
#ifdef F_OK
11045
    if (ins(d, "F_OK", (long)F_OK)) return -1;
11046
#endif
11047
#ifdef R_OK
11048
    if (ins(d, "R_OK", (long)R_OK)) return -1;
11049
#endif
11050
#ifdef W_OK
11051
    if (ins(d, "W_OK", (long)W_OK)) return -1;
11052
#endif
11053
#ifdef X_OK
11054
    if (ins(d, "X_OK", (long)X_OK)) return -1;
11055
#endif
11056
#ifdef NGROUPS_MAX
11057
    if (ins(d, "NGROUPS_MAX", (long)NGROUPS_MAX)) return -1;
11058
#endif
11059
#ifdef TMP_MAX
11060
    if (ins(d, "TMP_MAX", (long)TMP_MAX)) return -1;
11061
#endif
11062
#ifdef WCONTINUED
11063
    if (ins(d, "WCONTINUED", (long)WCONTINUED)) return -1;
11064
#endif
11065
#ifdef WNOHANG
11066
    if (ins(d, "WNOHANG", (long)WNOHANG)) return -1;
11067
#endif
11068
#ifdef WUNTRACED
11069
    if (ins(d, "WUNTRACED", (long)WUNTRACED)) return -1;
11070
#endif
11071
#ifdef O_RDONLY
11072
    if (ins(d, "O_RDONLY", (long)O_RDONLY)) return -1;
11073 11074
#endif
#ifdef O_WRONLY
11075
    if (ins(d, "O_WRONLY", (long)O_WRONLY)) return -1;
11076 11077
#endif
#ifdef O_RDWR
11078
    if (ins(d, "O_RDWR", (long)O_RDWR)) return -1;
11079 11080
#endif
#ifdef O_NDELAY
11081
    if (ins(d, "O_NDELAY", (long)O_NDELAY)) return -1;
11082 11083
#endif
#ifdef O_NONBLOCK
11084
    if (ins(d, "O_NONBLOCK", (long)O_NONBLOCK)) return -1;
11085 11086
#endif
#ifdef O_APPEND
11087
    if (ins(d, "O_APPEND", (long)O_APPEND)) return -1;
11088 11089
#endif
#ifdef O_DSYNC
11090
    if (ins(d, "O_DSYNC", (long)O_DSYNC)) return -1;
11091 11092
#endif
#ifdef O_RSYNC
11093
    if (ins(d, "O_RSYNC", (long)O_RSYNC)) return -1;
11094 11095
#endif
#ifdef O_SYNC
11096
    if (ins(d, "O_SYNC", (long)O_SYNC)) return -1;
11097 11098
#endif
#ifdef O_NOCTTY
11099
    if (ins(d, "O_NOCTTY", (long)O_NOCTTY)) return -1;
11100 11101
#endif
#ifdef O_CREAT
11102
    if (ins(d, "O_CREAT", (long)O_CREAT)) return -1;
11103 11104
#endif
#ifdef O_EXCL
11105
    if (ins(d, "O_EXCL", (long)O_EXCL)) return -1;
11106 11107
#endif
#ifdef O_TRUNC
11108
    if (ins(d, "O_TRUNC", (long)O_TRUNC)) return -1;
11109 11110
#endif
#ifdef O_BINARY
11111
    if (ins(d, "O_BINARY", (long)O_BINARY)) return -1;
11112 11113
#endif
#ifdef O_TEXT
11114
    if (ins(d, "O_TEXT", (long)O_TEXT)) return -1;
11115
#endif
11116
#ifdef O_LARGEFILE
11117
    if (ins(d, "O_LARGEFILE", (long)O_LARGEFILE)) return -1;
11118
#endif
11119
#ifdef O_SHLOCK
11120
    if (ins(d, "O_SHLOCK", (long)O_SHLOCK)) return -1;
11121 11122
#endif
#ifdef O_EXLOCK
11123
    if (ins(d, "O_EXLOCK", (long)O_EXLOCK)) return -1;
11124
#endif
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#ifdef PRIO_PROCESS
    if (ins(d, "PRIO_PROCESS", (long)PRIO_PROCESS)) return -1;
#endif
#ifdef PRIO_PGRP
    if (ins(d, "PRIO_PGRP", (long)PRIO_PGRP)) return -1;
#endif
#ifdef PRIO_USER
    if (ins(d, "PRIO_USER", (long)PRIO_USER)) return -1;
#endif
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#ifdef O_CLOEXEC
    if (ins(d, "O_CLOEXEC", (long)O_CLOEXEC)) return -1;
#endif
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/* posix - constants for *at functions */
#ifdef AT_SYMLINK_NOFOLLOW
        if (ins(d, "AT_SYMLINK_NOFOLLOW", (long)AT_SYMLINK_NOFOLLOW)) return -1;
#endif
#ifdef AT_EACCESS
        if (ins(d, "AT_EACCESS", (long)AT_EACCESS)) return -1;
#endif
#ifdef AT_FDCWD
        if (ins(d, "AT_FDCWD", (long)AT_FDCWD)) return -1;
#endif
#ifdef AT_REMOVEDIR
        if (ins(d, "AT_REMOVEDIR", (long)AT_REMOVEDIR)) return -1;
#endif
#ifdef AT_SYMLINK_FOLLOW
        if (ins(d, "AT_SYMLINK_FOLLOW", (long)AT_SYMLINK_FOLLOW)) return -1;
#endif
#ifdef UTIME_NOW
        if (ins(d, "UTIME_NOW", (long)UTIME_NOW)) return -1;
#endif
#ifdef UTIME_OMIT
        if (ins(d, "UTIME_OMIT", (long)UTIME_OMIT)) return -1;
#endif
11159

11160

11161 11162
/* MS Windows */
#ifdef O_NOINHERIT
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    /* Don't inherit in child processes. */
    if (ins(d, "O_NOINHERIT", (long)O_NOINHERIT)) return -1;
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#endif
#ifdef _O_SHORT_LIVED
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    /* Optimize for short life (keep in memory). */
    /* MS forgot to define this one with a non-underscore form too. */
    if (ins(d, "O_SHORT_LIVED", (long)_O_SHORT_LIVED)) return -1;
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#endif
#ifdef O_TEMPORARY
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    /* Automatically delete when last handle is closed. */
    if (ins(d, "O_TEMPORARY", (long)O_TEMPORARY)) return -1;
11174 11175
#endif
#ifdef O_RANDOM
11176 11177
    /* Optimize for random access. */
    if (ins(d, "O_RANDOM", (long)O_RANDOM)) return -1;
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#endif
#ifdef O_SEQUENTIAL
11180 11181
    /* Optimize for sequential access. */
    if (ins(d, "O_SEQUENTIAL", (long)O_SEQUENTIAL)) return -1;
11182 11183
#endif

11184
/* GNU extensions. */
11185
#ifdef O_ASYNC
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    /* Send a SIGIO signal whenever input or output
       becomes available on file descriptor */
    if (ins(d, "O_ASYNC", (long)O_ASYNC)) return -1;
11189
#endif
11190
#ifdef O_DIRECT
11191 11192
    /* Direct disk access. */
    if (ins(d, "O_DIRECT", (long)O_DIRECT)) return -1;
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#endif
#ifdef O_DIRECTORY
11195 11196
    /* Must be a directory.      */
    if (ins(d, "O_DIRECTORY", (long)O_DIRECTORY)) return -1;
11197 11198
#endif
#ifdef O_NOFOLLOW
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    /* Do not follow links.      */
    if (ins(d, "O_NOFOLLOW", (long)O_NOFOLLOW)) return -1;
11201
#endif
11202
#ifdef O_NOATIME
11203 11204
    /* Do not update the access time. */
    if (ins(d, "O_NOATIME", (long)O_NOATIME)) return -1;
11205
#endif
11206

11207
    /* These come from sysexits.h */
11208
#ifdef EX_OK
11209
    if (ins(d, "EX_OK", (long)EX_OK)) return -1;
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11210
#endif /* EX_OK */
11211
#ifdef EX_USAGE
11212
    if (ins(d, "EX_USAGE", (long)EX_USAGE)) return -1;
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11213
#endif /* EX_USAGE */
11214
#ifdef EX_DATAERR
11215
    if (ins(d, "EX_DATAERR", (long)EX_DATAERR)) return -1;
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11216
#endif /* EX_DATAERR */
11217
#ifdef EX_NOINPUT
11218
    if (ins(d, "EX_NOINPUT", (long)EX_NOINPUT)) return -1;
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11219
#endif /* EX_NOINPUT */
11220
#ifdef EX_NOUSER
11221
    if (ins(d, "EX_NOUSER", (long)EX_NOUSER)) return -1;
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11222
#endif /* EX_NOUSER */
11223
#ifdef EX_NOHOST
11224
    if (ins(d, "EX_NOHOST", (long)EX_NOHOST)) return -1;
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11225
#endif /* EX_NOHOST */
11226
#ifdef EX_UNAVAILABLE
11227
    if (ins(d, "EX_UNAVAILABLE", (long)EX_UNAVAILABLE)) return -1;
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11228
#endif /* EX_UNAVAILABLE */
11229
#ifdef EX_SOFTWARE
11230
    if (ins(d, "EX_SOFTWARE", (long)EX_SOFTWARE)) return -1;
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11231
#endif /* EX_SOFTWARE */
11232
#ifdef EX_OSERR
11233
    if (ins(d, "EX_OSERR", (long)EX_OSERR)) return -1;
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11234
#endif /* EX_OSERR */
11235
#ifdef EX_OSFILE
11236
    if (ins(d, "EX_OSFILE", (long)EX_OSFILE)) return -1;
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11237
#endif /* EX_OSFILE */
11238
#ifdef EX_CANTCREAT
11239
    if (ins(d, "EX_CANTCREAT", (long)EX_CANTCREAT)) return -1;
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11240
#endif /* EX_CANTCREAT */
11241
#ifdef EX_IOERR
11242
    if (ins(d, "EX_IOERR", (long)EX_IOERR)) return -1;
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11243
#endif /* EX_IOERR */
11244
#ifdef EX_TEMPFAIL
11245
    if (ins(d, "EX_TEMPFAIL", (long)EX_TEMPFAIL)) return -1;
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11246
#endif /* EX_TEMPFAIL */
11247
#ifdef EX_PROTOCOL
11248
    if (ins(d, "EX_PROTOCOL", (long)EX_PROTOCOL)) return -1;
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11249
#endif /* EX_PROTOCOL */
11250
#ifdef EX_NOPERM
11251
    if (ins(d, "EX_NOPERM", (long)EX_NOPERM)) return -1;
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11252
#endif /* EX_NOPERM */
11253
#ifdef EX_CONFIG
11254
    if (ins(d, "EX_CONFIG", (long)EX_CONFIG)) return -1;
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11255
#endif /* EX_CONFIG */
11256
#ifdef EX_NOTFOUND
11257
    if (ins(d, "EX_NOTFOUND", (long)EX_NOTFOUND)) return -1;
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11258
#endif /* EX_NOTFOUND */
11259

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11260
    /* statvfs */
11261
#ifdef ST_RDONLY
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11262
    if (ins(d, "ST_RDONLY", (long)ST_RDONLY)) return -1;
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#endif /* ST_RDONLY */
#ifdef ST_NOSUID
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11265
    if (ins(d, "ST_NOSUID", (long)ST_NOSUID)) return -1;
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#endif /* ST_NOSUID */

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    /* FreeBSD sendfile() constants */
#ifdef SF_NODISKIO
    if (ins(d, "SF_NODISKIO", (long)SF_NODISKIO)) return -1;
#endif
#ifdef SF_MNOWAIT
    if (ins(d, "SF_MNOWAIT", (long)SF_MNOWAIT)) return -1;
#endif
#ifdef SF_SYNC
    if (ins(d, "SF_SYNC", (long)SF_SYNC)) return -1;
#endif

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    /* constants for posix_fadvise */
#ifdef POSIX_FADV_NORMAL
    if (ins(d, "POSIX_FADV_NORMAL", (long)POSIX_FADV_NORMAL)) return -1;
#endif
#ifdef POSIX_FADV_SEQUENTIAL
    if (ins(d, "POSIX_FADV_SEQUENTIAL", (long)POSIX_FADV_SEQUENTIAL)) return -1;
#endif
#ifdef POSIX_FADV_RANDOM
    if (ins(d, "POSIX_FADV_RANDOM", (long)POSIX_FADV_RANDOM)) return -1;
#endif
#ifdef POSIX_FADV_NOREUSE
    if (ins(d, "POSIX_FADV_NOREUSE", (long)POSIX_FADV_NOREUSE)) return -1;
#endif
#ifdef POSIX_FADV_WILLNEED
    if (ins(d, "POSIX_FADV_WILLNEED", (long)POSIX_FADV_WILLNEED)) return -1;
#endif
#ifdef POSIX_FADV_DONTNEED
    if (ins(d, "POSIX_FADV_DONTNEED", (long)POSIX_FADV_DONTNEED)) return -1;
#endif

    /* constants for waitid */
#if defined(HAVE_SYS_WAIT_H) && defined(HAVE_WAITID)
    if (ins(d, "P_PID", (long)P_PID)) return -1;
    if (ins(d, "P_PGID", (long)P_PGID)) return -1;
    if (ins(d, "P_ALL", (long)P_ALL)) return -1;
#endif
#ifdef WEXITED
    if (ins(d, "WEXITED", (long)WEXITED)) return -1;
#endif
#ifdef WNOWAIT
    if (ins(d, "WNOWAIT", (long)WNOWAIT)) return -1;
#endif
#ifdef WSTOPPED
    if (ins(d, "WSTOPPED", (long)WSTOPPED)) return -1;
#endif
#ifdef CLD_EXITED
    if (ins(d, "CLD_EXITED", (long)CLD_EXITED)) return -1;
#endif
#ifdef CLD_DUMPED
    if (ins(d, "CLD_DUMPED", (long)CLD_DUMPED)) return -1;
#endif
#ifdef CLD_TRAPPED
    if (ins(d, "CLD_TRAPPED", (long)CLD_TRAPPED)) return -1;
#endif
#ifdef CLD_CONTINUED
    if (ins(d, "CLD_CONTINUED", (long)CLD_CONTINUED)) return -1;
#endif

    /* constants for lockf */
#ifdef F_LOCK
    if (ins(d, "F_LOCK", (long)F_LOCK)) return -1;
#endif
#ifdef F_TLOCK
    if (ins(d, "F_TLOCK", (long)F_TLOCK)) return -1;
#endif
#ifdef F_ULOCK
    if (ins(d, "F_ULOCK", (long)F_ULOCK)) return -1;
#endif
#ifdef F_TEST
    if (ins(d, "F_TEST", (long)F_TEST)) return -1;
#endif

    /* constants for futimens */
#ifdef UTIME_NOW
    if (ins(d, "UTIME_NOW", (long)UTIME_NOW)) return -1;
#endif
#ifdef UTIME_OMIT
    if (ins(d, "UTIME_OMIT", (long)UTIME_OMIT)) return -1;
#endif

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11349
#ifdef HAVE_SPAWNV
11350
#if defined(PYOS_OS2) && defined(PYCC_GCC)
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    if (ins(d, "P_WAIT", (long)P_WAIT)) return -1;
    if (ins(d, "P_NOWAIT", (long)P_NOWAIT)) return -1;
    if (ins(d, "P_OVERLAY", (long)P_OVERLAY)) return -1;
    if (ins(d, "P_DEBUG", (long)P_DEBUG)) return -1;
    if (ins(d, "P_SESSION", (long)P_SESSION)) return -1;
    if (ins(d, "P_DETACH", (long)P_DETACH)) return -1;
    if (ins(d, "P_PM", (long)P_PM)) return -1;
    if (ins(d, "P_DEFAULT", (long)P_DEFAULT)) return -1;
    if (ins(d, "P_MINIMIZE", (long)P_MINIMIZE)) return -1;
    if (ins(d, "P_MAXIMIZE", (long)P_MAXIMIZE)) return -1;
    if (ins(d, "P_FULLSCREEN", (long)P_FULLSCREEN)) return -1;
    if (ins(d, "P_WINDOWED", (long)P_WINDOWED)) return -1;
    if (ins(d, "P_FOREGROUND", (long)P_FOREGROUND)) return -1;
    if (ins(d, "P_BACKGROUND", (long)P_BACKGROUND)) return -1;
    if (ins(d, "P_NOCLOSE", (long)P_NOCLOSE)) return -1;
    if (ins(d, "P_NOSESSION", (long)P_NOSESSION)) return -1;
    if (ins(d, "P_QUOTE", (long)P_QUOTE)) return -1;
    if (ins(d, "P_TILDE", (long)P_TILDE)) return -1;
    if (ins(d, "P_UNRELATED", (long)P_UNRELATED)) return -1;
    if (ins(d, "P_DEBUGDESC", (long)P_DEBUGDESC)) return -1;
11371
#else
11372 11373 11374 11375 11376
    if (ins(d, "P_WAIT", (long)_P_WAIT)) return -1;
    if (ins(d, "P_NOWAIT", (long)_P_NOWAIT)) return -1;
    if (ins(d, "P_OVERLAY", (long)_OLD_P_OVERLAY)) return -1;
    if (ins(d, "P_NOWAITO", (long)_P_NOWAITO)) return -1;
    if (ins(d, "P_DETACH", (long)_P_DETACH)) return -1;
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Guido van Rossum committed
11377
#endif
11378
#endif
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11379

11380
#ifdef HAVE_SCHED_H
11381
    if (ins(d, "SCHED_OTHER", (long)SCHED_OTHER)) return -1;
11382 11383 11384 11385 11386 11387 11388 11389 11390 11391 11392 11393 11394 11395
    if (ins(d, "SCHED_FIFO", (long)SCHED_FIFO)) return -1;
    if (ins(d, "SCHED_RR", (long)SCHED_RR)) return -1;
#ifdef SCHED_SPORADIC
    if (ins(d, "SCHED_SPORADIC", (long)SCHED_SPORADIC) return -1;
#endif
#ifdef SCHED_BATCH
    if (ins(d, "SCHED_BATCH", (long)SCHED_BATCH)) return -1;
#endif
#ifdef SCHED_IDLE
    if (ins(d, "SCHED_IDLE", (long)SCHED_IDLE)) return -1;
#endif
#ifdef SCHED_RESET_ON_FORK
    if (ins(d, "SCHED_RESET_ON_FORK", (long)SCHED_RESET_ON_FORK)) return -1;
#endif
11396 11397 11398 11399 11400 11401 11402 11403 11404 11405 11406 11407
#ifdef SCHED_SYS
    if (ins(d, "SCHED_SYS", (long)SCHED_SYS)) return -1;
#endif
#ifdef SCHED_IA
    if (ins(d, "SCHED_IA", (long)SCHED_IA)) return -1;
#endif
#ifdef SCHED_FSS
    if (ins(d, "SCHED_FSS", (long)SCHED_FSS)) return -1;
#endif
#ifdef SCHED_FX
    if (ins(d, "SCHED_FX", (long)SCHED_FSS)) return -1;
#endif
11408 11409
#endif

11410
#ifdef USE_XATTRS
11411 11412 11413 11414 11415
    if (ins(d, "XATTR_CREATE", (long)XATTR_CREATE)) return -1;
    if (ins(d, "XATTR_REPLACE", (long)XATTR_REPLACE)) return -1;
    if (ins(d, "XATTR_SIZE_MAX", (long)XATTR_SIZE_MAX)) return -1;
#endif

11416 11417 11418 11419 11420 11421 11422 11423 11424 11425 11426 11427 11428 11429 11430 11431 11432 11433 11434 11435 11436 11437
#ifdef RTLD_LAZY
    if (PyModule_AddIntMacro(d, RTLD_LAZY)) return -1;
#endif
#ifdef RTLD_NOW
    if (PyModule_AddIntMacro(d, RTLD_NOW)) return -1;
#endif
#ifdef RTLD_GLOBAL
    if (PyModule_AddIntMacro(d, RTLD_GLOBAL)) return -1;
#endif
#ifdef RTLD_LOCAL
    if (PyModule_AddIntMacro(d, RTLD_LOCAL)) return -1;
#endif
#ifdef RTLD_NODELETE
    if (PyModule_AddIntMacro(d, RTLD_NODELETE)) return -1;
#endif
#ifdef RTLD_NOLOAD
    if (PyModule_AddIntMacro(d, RTLD_NOLOAD)) return -1;
#endif
#ifdef RTLD_DEEPBIND
    if (PyModule_AddIntMacro(d, RTLD_DEEPBIND)) return -1;
#endif

11438
#if defined(PYOS_OS2)
11439
    if (insertvalues(d)) return -1;
11440
#endif
11441
    return 0;
11442 11443 11444
}


11445
#if (defined(_MSC_VER) || defined(__WATCOMC__) || defined(__BORLANDC__)) && !defined(__QNX__)
11446
#define INITFUNC PyInit_nt
11447
#define MODNAME "nt"
11448 11449

#elif defined(PYOS_OS2)
11450
#define INITFUNC PyInit_os2
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11451
#define MODNAME "os2"
11452

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11453
#else
11454
#define INITFUNC PyInit_posix
11455 11456
#define MODNAME "posix"
#endif
11457

11458
static struct PyModuleDef posixmodule = {
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    PyModuleDef_HEAD_INIT,
    MODNAME,
    posix__doc__,
    -1,
    posix_methods,
    NULL,
    NULL,
    NULL,
    NULL
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};


11471
PyMODINIT_FUNC
11472
INITFUNC(void)
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11473
{
11474
    PyObject *m, *v;
11475

11476
#if defined(HAVE_SYMLINK) && defined(MS_WINDOWS)
11477
    win32_can_symlink = enable_symlink();
11478 11479
#endif

11480 11481 11482
    m = PyModule_Create(&posixmodule);
    if (m == NULL)
        return NULL;
11483

11484 11485 11486 11487 11488 11489
    /* Initialize environ dictionary */
    v = convertenviron();
    Py_XINCREF(v);
    if (v == NULL || PyModule_AddObject(m, "environ", v) != 0)
        return NULL;
    Py_DECREF(v);
11490

11491 11492
    if (all_ins(m))
        return NULL;
11493

11494 11495
    if (setup_confname_tables(m))
        return NULL;
11496

11497 11498
    Py_INCREF(PyExc_OSError);
    PyModule_AddObject(m, "error", PyExc_OSError);
11499

11500
#ifdef HAVE_SCHED_SETAFFINITY
11501 11502 11503 11504
    if (PyType_Ready(&cpu_set_type) < 0)
        return NULL;
    Py_INCREF(&cpu_set_type);
    PyModule_AddObject(m, "cpu_set", (PyObject *)&cpu_set_type);
11505
#endif
11506

11507
#ifdef HAVE_PUTENV
11508 11509
    if (posix_putenv_garbage == NULL)
        posix_putenv_garbage = PyDict_New();
11510
#endif
11511

11512
    if (!initialized) {
11513 11514 11515 11516 11517
#if defined(HAVE_WAITID) && !defined(__APPLE__)
        waitid_result_desc.name = MODNAME ".waitid_result";
        PyStructSequence_InitType(&WaitidResultType, &waitid_result_desc);
#endif

11518 11519 11520 11521 11522 11523 11524
        stat_result_desc.name = MODNAME ".stat_result";
        stat_result_desc.fields[7].name = PyStructSequence_UnnamedField;
        stat_result_desc.fields[8].name = PyStructSequence_UnnamedField;
        stat_result_desc.fields[9].name = PyStructSequence_UnnamedField;
        PyStructSequence_InitType(&StatResultType, &stat_result_desc);
        structseq_new = StatResultType.tp_new;
        StatResultType.tp_new = statresult_new;
11525

11526 11527
        statvfs_result_desc.name = MODNAME ".statvfs_result";
        PyStructSequence_InitType(&StatVFSResultType, &statvfs_result_desc);
11528 11529
#ifdef NEED_TICKS_PER_SECOND
#  if defined(HAVE_SYSCONF) && defined(_SC_CLK_TCK)
11530
        ticks_per_second = sysconf(_SC_CLK_TCK);
11531
#  elif defined(HZ)
11532
        ticks_per_second = HZ;
11533
#  else
11534
        ticks_per_second = 60; /* magic fallback value; may be bogus */
11535
#  endif
11536 11537
#endif

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11538
#if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER)
11539 11540 11541
        sched_param_desc.name = MODNAME ".sched_param";
        PyStructSequence_InitType(&SchedParamType, &sched_param_desc);
        SchedParamType.tp_new = sched_param_new;
11542
#endif
11543
    }
11544 11545 11546 11547
#if defined(HAVE_WAITID) && !defined(__APPLE__)
    Py_INCREF((PyObject*) &WaitidResultType);
    PyModule_AddObject(m, "waitid_result", (PyObject*) &WaitidResultType);
#endif
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    Py_INCREF((PyObject*) &StatResultType);
    PyModule_AddObject(m, "stat_result", (PyObject*) &StatResultType);
    Py_INCREF((PyObject*) &StatVFSResultType);
    PyModule_AddObject(m, "statvfs_result",
                       (PyObject*) &StatVFSResultType);
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#if defined(HAVE_SCHED_SETPARAM) || defined(HAVE_SCHED_SETSCHEDULER)
11555 11556
    Py_INCREF(&SchedParamType);
    PyModule_AddObject(m, "sched_param", (PyObject *)&SchedParamType);
11557
#endif
11558
    initialized = 1;
11559 11560

#ifdef __APPLE__
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    /*
     * Step 2 of weak-linking support on Mac OS X.
     *
     * The code below removes functions that are not available on the
     * currently active platform.
     *
     * This block allow one to use a python binary that was build on
     * OSX 10.4 on OSX 10.3, without loosing access to new APIs on
     * OSX 10.4.
     */
11571
#ifdef HAVE_FSTATVFS
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    if (fstatvfs == NULL) {
        if (PyObject_DelAttrString(m, "fstatvfs") == -1) {
            return NULL;
        }
    }
11577 11578 11579
#endif /* HAVE_FSTATVFS */

#ifdef HAVE_STATVFS
11580 11581 11582 11583 11584
    if (statvfs == NULL) {
        if (PyObject_DelAttrString(m, "statvfs") == -1) {
            return NULL;
        }
    }
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#endif /* HAVE_STATVFS */

# ifdef HAVE_LCHOWN
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    if (lchown == NULL) {
        if (PyObject_DelAttrString(m, "lchown") == -1) {
            return NULL;
        }
    }
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#endif /* HAVE_LCHOWN */


#endif /* __APPLE__ */
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    return m;
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}
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#ifdef __cplusplus
}
#endif