Added functions for symbolic link handling to make it possible to

backport things from 4.0. This is safe as the functions are not used!
Fixed bug in new mutex handling in InnoDB
Make allow_break() and dont_break() defines.

BitKeeper/etc/logging_ok

-mwagner@evoq.mwagner.org
-sasha@mysql.sashanet.com
-heikki@donna.mysql.fi
-miguel@linux.local
-monty@tik.mysql.fi
-monty@donna.mysql.fi
+monty@hundin.mysql.fi

Docs/manual.texi

@@ -8472,7 +8472,7 @@ The following @code{configure} command should work:
 @example
 shell> CFLAGS="-D_XOPEN_XPG4" CXX=gcc CXXFLAGS="-D_XOPEN_XPG4" \
        ./configure \
-           --with-debug --prefix=/usr/local/mysql \
+           --prefix=/usr/local/mysql \
            --with-named-thread-libs="-lgthreads -lsocket -lgen -lgthreads" \
            --with-named-curses-libs="-lcurses"
 @end example
@@ -9509,19 +9509,19 @@ and are configured with the following compilers and options:
 @code{CC=gcc CXX=gcc CXXFLAGS="-O3 -felide-constructors" ./configure --prefix=/usr/local/mysql --disable-shared --with-extra-charsets=complex --enable-assembler}
 
 @item SunOS 5.5.1 sun4u with @code{egcs} 1.0.3a
-@code{CC=gcc CFLAGS="-O3 -fomit-frame-pointer" CXX=gcc CXXFLAGS="-O3 -fomit-frame-pointer -felide-constructors -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local/mysql --with-low-memory --with-extra-charsets=complex}
+@code{CC=gcc CFLAGS="-O3" CXX=gcc CXXFLAGS="-O3 -felide-constructors -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local/mysql --with-low-memory --with-extra-charsets=complex}
 
 @item SunOS 5.6 sun4u with @code{egcs} 2.90.27
-@code{CC=gcc CFLAGS="-O3 -fomit-frame-pointer" CXX=gcc CXXFLAGS="-O3 -fomit-frame-pointer -felide-constructors -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local/mysql --with-low-memory --with-extra-charsets=complex}
+@code{CC=gcc CFLAGS="-O3" CXX=gcc CXXFLAGS="-O3 -felide-constructors -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local/mysql --with-low-memory --with-extra-charsets=complex}
 
 @item SunOS 5.6 i86pc with @code{gcc} 2.8.1
 @code{CC=gcc CXX=gcc CXXFLAGS=-O3 ./configure --prefix=/usr/local/mysql --with-low-memory --with-extra-charsets=complex}
 
 @item Linux 2.0.33 i386 with @code{pgcc} 2.90.29 (@code{egcs} 1.0.3a)
-@code{CFLAGS="-O3 -mpentium -mstack-align-double -fomit-frame-pointer" CXX=gcc CXXFLAGS="-O3 -mpentium -mstack-align-double -fomit-frame-pointer -felide-constructors -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local/mysql --enable-assembler --with-mysqld-ldflags=-all-static --with-extra-charsets=complex}
+@code{CFLAGS="-O3 -mpentium -mstack-align-double" CXX=gcc CXXFLAGS="-O3 -mpentium -mstack-align-double -felide-constructors -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local/mysql --enable-assembler --with-mysqld-ldflags=-all-static --with-extra-charsets=complex}
 
 @item Linux 2.2.x with x686 with @code{gcc} 2.95.2
-@code{CFLAGS="-O3 -mpentiumpro -fomit-frame-pointer" CXX=gcc CXXFLAGS="-O3 -mpentiumpro -fomit-frame-pointer -felide-constructors -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local/mysql --enable-assembler --with-mysqld-ldflags=-all-static --disable-shared --with-extra-charset=complex}
+@code{CFLAGS="-O3 -mpentiumpro" CXX=gcc CXXFLAGS="-O3 -mpentiumpro -felide-constructors -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local/mysql --enable-assembler --with-mysqld-ldflags=-all-static --disable-shared --with-extra-charset=complex}
 
 @item SCO 3.2v5.0.4 i386 with @code{gcc} 2.7-95q4
 @code{CC=gcc CXX=gcc CXXFLAGS=-O3 ./configure --prefix=/usr/local/mysql --with-extra-charsets=complex}
@@ -10724,8 +10724,8 @@ the old @code{ISAM} type.  You don't have to convert your old tables to
 use these with Version 3.23.  By default, all new tables will be created with
 type @code{MyISAM} (unless you start @code{mysqld} with the
 @code{--default-table-type=isam} option). You can change an @code{ISAM}
-table to a @code{MyISAM} table with @code{ALTER TABLE} or the Perl script
-@code{mysql_convert_table_format}.
+table to a @code{MyISAM} table with @code{ALTER TABLE table_name TYPE=MyISAM}
+or the Perl script @code{mysql_convert_table_format}.
 
 Version 3.22 and 3.21 clients will work without any problems with a Version
 3.23 server.

configure.in

@@ -755,6 +755,11 @@ case $SYSTEM_TYPE in
     echo "Enabling snprintf workaround for hpux 10.20"
     CFLAGS="$CFLAGS -DHAVE_BROKEN_SNPRINTF -DSIGNALS_DONT_BREAK_READ"
     CXXFLAGS="$CXXFLAGS -DHAVE_BROKEN_SNPRINTF -D_INCLUDE_LONGLONG -DSIGNALS_DONT_BREAK_READ"
+    if test "$with_named_thread" = "no"
+    then 
+      echo "Using --with-named-thread=-lpthread"
+      with_named_thread="-lcma"
+    fi
     ;;
   *hpux11.*)
     echo "Enabling pread/pwrite workaround for hpux 11"
@@ -1051,7 +1056,7 @@ fi
 AC_MSG_CHECKING("named thread libs:")
 if test "$with_named_thread" != "no"
 then
-  LIBS="$LIBS $with_named_thread"
+  LIBS="$with_named_thread $LIBS $with_named_thread"
   with_posix_threads="yes"
   with_mit_threads="no"
   AC_MSG_RESULT("$with_named_thread")

include/my_sys.h

@@ -62,6 +62,8 @@ extern int NEAR my_errno;		/* Last error in mysys */
 #define MY_DONT_CHECK_FILESIZE 128	/* Option to init_io_cache() */
 #define MY_LINK_WARNING 32	/* my_redel() gives warning if links */
 #define MY_COPYTIME	64	/* my_redel() copys time */
+#define MY_DELETE_OLD	256	/* my_create_with_symlink() */
+#define MY_RESOLVE_LINK 128	/* my_realpath(); Only resolve links */
 #define MY_HOLD_ORIGINAL_MODES 128  /* my_copy() holds to file modes */
 #define MY_REDEL_MAKE_BACKUP 256
 #define MY_SEEK_NOT_DONE 32	/* my_lock may have to do a seek */
@@ -378,6 +380,12 @@ extern File my_create(const char *FileName,int CreateFlags,
 		      int AccsesFlags, myf MyFlags);
 extern int my_close(File Filedes,myf MyFlags);
 extern int my_mkdir(const char *dir, int Flags, myf MyFlags);
+extern int my_readlink(char *to, const char *filename, myf MyFlags);
+extern int my_realpath(char *to, const char *filename, myf MyFlags);
+extern File my_create_with_symlink(const char *linkname, const char *filename,
+				   int createflags, int access_flags,
+				   myf MyFlags);
+extern int my_symlink(const char *content, const char *linkname, myf MyFlags);
 extern uint my_read(File Filedes,byte *Buffer,uint Count,myf MyFlags);
 extern uint my_pread(File Filedes,byte *Buffer,uint Count,my_off_t offset,
 		     myf MyFlags);
@@ -428,8 +436,14 @@ extern int my_redel(const char *from, const char *to, int MyFlags);
 extern int my_copystat(const char *from, const char *to, int MyFlags);
 extern my_string my_filename(File fd);
 
+#ifndef THREAD
 extern void dont_break(void);
 extern void allow_break(void);
+#else
+#define dont_break()
+#define allow_break()
+#endif
+
 extern void my_remember_signal(int signal_number,sig_handler (*func)(int));
 extern void caseup(my_string str,uint length);
 extern void casedn(my_string str,uint length);

include/mysys_err.h

@@ -22,7 +22,7 @@ extern "C" {
 #endif
 
 #define GLOB		0	/* Error maps */
-#define GLOBERRS	24	/* Max number of error messages in map's */
+#define GLOBERRS	27	/* Max number of error messages in map's */
 #define EE(X)	globerrs[ X ]	/* Defines to add error to right map */
 
 extern const char * NEAR globerrs[];	/* my_error_messages is here */
@@ -51,6 +51,9 @@ extern const char * NEAR globerrs[];	/* my_error_messages is here */
 #define EE_CANT_MKDIR		21
 #define EE_UNKNOWN_CHARSET	22
 #define EE_OUT_OF_FILERESOURCES	23
+#define EE_CANT_READLINK	24
+#define EE_CANT_SYMLINK		25
+#define EE_REALPATH		26
 
 #ifdef	__cplusplus
 }

innobase/include/sync0sync.ic

@@ -134,9 +134,10 @@ mutex_reset_lock_word(
         __asm   XCHG    EDX, DWORD PTR [ECX]                    
 #else
 	mutex->lock_word = 0;
-
+#if !(defined(__GNUC__) && defined(UNIV_INTEL_X86))
 	os_fast_mutex_unlock(&(mutex->os_fast_mutex));
 #endif
+#endif
 }
 
 /**********************************************************************

mysys/Makefile.am

@@ -33,6 +33,7 @@ libmysys_a_SOURCES =	my_init.c my_getwd.c mf_getdate.c\
 			my_alloc.c safemalloc.c my_fopen.c my_fstream.c \
 			my_error.c errors.c my_div.c my_messnc.c \
 			mf_format.c mf_same.c mf_dirname.c mf_fn_ext.c \
+			my_symlink.c \
 			mf_pack.c mf_pack2.c mf_unixpath.c mf_stripp.c \
 			mf_casecnv.c mf_soundex.c mf_wcomp.c mf_wfile.c \
 			mf_qsort.c mf_qsort2.c mf_sort.c \

mysys/errors.c

@@ -46,6 +46,9 @@ const char * NEAR globerrs[GLOBERRS]=
   "Can't create directory '%s' (Errcode: %d)",
   "Character set '%s' is not a compiled character set and is not specified in the '%s' file",
   "Out of resources when opening file '%s' (Errcode: %d)",
+  "Can't read value for symlink '%s' (Error %d)",
+  "Can't create symlink '%s' pointing at '%s' (Error %d)",
+  "Error on realpath() on '%s' (Error %d)",
 };
 
 void init_glob_errs(void)
@@ -81,6 +84,9 @@ void init_glob_errs()
   EE(EE_DISK_FULL)	= "Disk is full writing '%s'. Waiting for someone to free space...";
   EE(EE_CANT_MKDIR)	="Can't create directory '%s' (Errcode: %d)";
   EE(EE_UNKNOWN_CHARSET)= "Character set is not a compiled character set and is not specified in the %s file";
-  EE(EE_OUT_OF_FILERESOURCES)="Out of resources when opening file '%s' (Errcode: %d)",
+  EE(EE_OUT_OF_FILERESOURCES)="Out of resources when opening file '%s' (Errcode: %d)";
+  EE(EE_CANT_READLINK)="Can't read value for symlink '%s' (Error %d)";
+  EE(EE_CANT_SYMLINK)="Can't create symlink '%s' pointing at '%s' (Error %d)";
+  EE(EE_REALPATH)="Error on realpath() on '%s' (Error %d)";
 }
 #endif

mysys/mf_brkhant.c

@@ -24,17 +24,15 @@
 
 	/* Set variable that we can't break */
 
+#if !defined(THREAD)
 void dont_break(void)
 {
-#if !defined(THREAD)
   my_dont_interrupt=1;
-#endif
   return;
 } /* dont_break */
 
 void allow_break(void)
 {
-#if !defined(THREAD)
   {
     reg1 int index;
 
@@ -54,8 +52,8 @@ void allow_break(void)
       _my_signals=0;
     }
   }
-#endif
 } /* dont_break */
+#endif
 
 	/* Set old status */
 

mysys/my_symlink.c

+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA */
+
+#include "mysys_priv.h"
+#include "mysys_err.h"
+#include <m_string.h>
+#ifdef HAVE_REALPATH
+#include <sys/param.h>
+#include <sys/stat.h>
+#endif
+
+/*
+  Reads the content of a symbolic link
+  If the file is not a symbolic link, return the original file name in to.
+*/
+
+int my_readlink(char *to, const char *filename, myf MyFlags)
+{
+#ifndef HAVE_READLINK
+  strmov(to,filename);
+  return 0;
+#else
+  int result=0;
+  int length;
+  DBUG_ENTER("my_readlink");
+
+  if ((length=readlink(filename, to, FN_REFLEN-1)) < 0)
+  {
+    /* Don't give an error if this wasn't a symlink */
+    if ((my_errno=errno) == EINVAL)
+    {
+      strmov(to,filename);
+    }
+    else
+    {
+      if (MyFlags & MY_WME)
+	my_error(EE_CANT_READLINK, MYF(0), filename, errno);
+      result= -1;
+    }
+  }
+  else
+    to[length]=0;
+  DBUG_RETURN(result);
+#endif /* HAVE_READLINK */
+}
+
+
+/* Create a symbolic link */
+
+int my_symlink(const char *content, const char *linkname, myf MyFlags)
+{
+#ifndef HAVE_READLINK
+  return 0;
+#else
+  int result;
+  DBUG_ENTER("my_symlink");
+
+  result= 0;
+  if (symlink(content, linkname))
+  {
+    result= -1;
+    my_errno=errno;
+    if (MyFlags & MY_WME)
+      my_error(EE_CANT_SYMLINK, MYF(0), linkname, content, errno);
+  }
+  DBUG_RETURN(result);
+#endif /* HAVE_READLINK */
+}
+
+
+/*
+  Create a file and a symbolic link that points to this file
+  If linkname is a null pointer or equal to filename, we don't
+  create a link.
+ */
+
+
+File my_create_with_symlink(const char *linkname, const char *filename,
+			    int createflags, int access_flags, myf MyFlags)
+{
+  File file;
+  int tmp_errno;
+  DBUG_ENTER("my_create_with_symlink");
+  if ((file=my_create(filename, createflags, access_flags, MyFlags)) >= 0)
+  {
+    /* Test if we should create a link */
+    if (linkname && strcmp(linkname,filename))
+    {
+      /* Delete old link/file */
+      if (MyFlags & MY_DELETE_OLD)
+	my_delete(linkname, MYF(0));
+      /* Create link */
+      if (my_symlink(filename, linkname, MyFlags))
+      {
+	/* Fail, remove everything we have done */
+	tmp_errno=my_errno;
+	my_close(file,MYF(0));
+	my_delete(filename, MYF(0));
+	file= -1;
+	my_errno=tmp_errno;
+      }
+    }
+  }
+  DBUG_RETURN(file);
+}
+
+
+/*
+  Resolve all symbolic links in path
+  'to' may be equal to 'filename'
+
+  Because purify gives a lot of UMR errors when using realpath(),
+  this code is disabled when using purify.
+
+  If MY_RESOLVE_LINK is given, only do realpath if the file is a link.
+*/
+
+#if defined(SCO)
+#define BUFF_LEN 4097
+#elif defined(MAXPATHLEN)
+#define BUFF_LEN MAXPATHLEN
+#else
+#define BUFF_LEN FN_LEN
+#endif
+
+int my_realpath(char *to, const char *filename, myf MyFlags)
+{
+#if defined(HAVE_REALPATH) && !defined(HAVE_purify) && !defined(HAVE_BROKEN_REALPATH)
+  int result=0;
+  char buff[BUFF_LEN];
+  struct stat stat_buff;
+  DBUG_ENTER("my_realpath");
+
+  if (!(MyFlags & MY_RESOLVE_LINK) ||
+      (!lstat(filename,&stat_buff) && S_ISLNK(stat_buff.st_mode)))
+  {
+    char *ptr;
+    if ((ptr=realpath(filename,buff)))
+      strmake(to,ptr,FN_REFLEN-1);
+    else
+    {
+      /* Realpath didn't work;  Use original name */
+      my_errno=errno;
+      if (MyFlags & MY_WME)
+	my_error(EE_REALPATH, MYF(0), filename, my_errno);
+      if (to != filename)
+	strmov(to,filename);
+      result= -1;
+    }
+  }
+  return result;
+#else
+  if (to != filename)
+    strmov(to,filename);
+  return 0;
+#endif
+}

sql/sql_select.h

@@ -138,8 +138,11 @@ class TMP_TABLE_PARAM {
   }
   inline void cleanup(void)
   {
-    delete [] copy_field;
-    copy_field=0;
+    if (copy_field)				/* Fix for Intel compiler */
+    {
+      delete [] copy_field;
+      copy_field=0;
+    }
   }
 };