Commit ebeb8c82 authored by Dominik Brodowski's avatar Dominik Brodowski Committed by Ingo Molnar

syscalls/x86: Use 'struct pt_regs' based syscall calling for IA32_EMULATION and x32

Extend ARCH_HAS_SYSCALL_WRAPPER for i386 emulation and for x32 on 64-bit
x86.

For x32, all we need to do is to create an additional stub for each
compat syscall which decodes the parameters in x86-64 ordering, e.g.:

	asmlinkage long __compat_sys_x32_xyzzy(struct pt_regs *regs)
	{
		return c_SyS_xyzzy(regs->di, regs->si, regs->dx);
	}

For i386 emulation, we need to teach compat_sys_*() to take struct
pt_regs as its only argument, e.g.:

	asmlinkage long __compat_sys_ia32_xyzzy(struct pt_regs *regs)
	{
		return c_SyS_xyzzy(regs->bx, regs->cx, regs->dx);
	}

In addition, we need to create additional stubs for common syscalls
(that is, for syscalls which have the same parameters on 32-bit and
64-bit), e.g.:

	asmlinkage long __sys_ia32_xyzzy(struct pt_regs *regs)
	{
		return c_sys_xyzzy(regs->bx, regs->cx, regs->dx);
	}

This approach avoids leaking random user-provided register content down
the call chain.

This patch is based on an original proof-of-concept

 | From: Linus Torvalds <torvalds@linux-foundation.org>
 | Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

and was split up and heavily modified by me, in particular to base it on
ARCH_HAS_SYSCALL_WRAPPER.
Signed-off-by: default avatarDominik Brodowski <linux@dominikbrodowski.net>
Acked-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180405095307.3730-6-linux@dominikbrodowski.netSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 7303e30e
......@@ -2957,5 +2957,5 @@ source "lib/Kconfig"
config SYSCALL_PTREGS
def_bool y
depends on X86_64 && !COMPAT
depends on X86_64
select ARCH_HAS_SYSCALL_WRAPPER
......@@ -325,6 +325,9 @@ static __always_inline void do_syscall_32_irqs_on(struct pt_regs *regs)
if (likely(nr < IA32_NR_syscalls)) {
nr = array_index_nospec(nr, IA32_NR_syscalls);
#ifdef CONFIG_SYSCALL_PTREGS
regs->ax = ia32_sys_call_table[nr](regs);
#else
/*
* It's possible that a 32-bit syscall implementation
* takes a 64-bit parameter but nonetheless assumes that
......@@ -335,6 +338,7 @@ static __always_inline void do_syscall_32_irqs_on(struct pt_regs *regs)
(unsigned int)regs->bx, (unsigned int)regs->cx,
(unsigned int)regs->dx, (unsigned int)regs->si,
(unsigned int)regs->di, (unsigned int)regs->bp);
#endif /* CONFIG_SYSCALL_PTREGS */
}
syscall_return_slowpath(regs);
......
......@@ -7,14 +7,23 @@
#include <asm/asm-offsets.h>
#include <asm/syscall.h>
#define __SYSCALL_I386(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ;
#ifdef CONFIG_SYSCALL_PTREGS
/* On X86_64, we use struct pt_regs * to pass parameters to syscalls */
#define __SYSCALL_I386(nr, sym, qual) extern asmlinkage long sym(const struct pt_regs *);
/* this is a lie, but it does not hurt as sys_ni_syscall just returns -EINVAL */
extern asmlinkage long sys_ni_syscall(const struct pt_regs *);
#else /* CONFIG_SYSCALL_PTREGS */
#define __SYSCALL_I386(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
#endif /* CONFIG_SYSCALL_PTREGS */
#include <asm/syscalls_32.h>
#undef __SYSCALL_I386
#define __SYSCALL_I386(nr, sym, qual) [nr] = sym,
extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
__visible const sys_call_ptr_t ia32_sys_call_table[__NR_syscall_compat_max+1] = {
/*
* Smells like a compiler bug -- it doesn't work
......
......@@ -4,390 +4,395 @@
# The format is:
# <number> <abi> <name> <entry point> <compat entry point>
#
# The __sys_ia32 and __compat_sys_ia32 stubs are created on-the-fly for
# sys_*() system calls and compat_sys_*() compat system calls if
# IA32_EMULATION is defined, and expect struct pt_regs *regs as their only
# parameter.
#
# The abi is always "i386" for this file.
#
0 i386 restart_syscall sys_restart_syscall
1 i386 exit sys_exit
1 i386 exit sys_exit __sys_ia32_exit
2 i386 fork sys_fork
3 i386 read sys_read
4 i386 write sys_write
5 i386 open sys_open compat_sys_open
6 i386 close sys_close
7 i386 waitpid sys_waitpid
8 i386 creat sys_creat
9 i386 link sys_link
10 i386 unlink sys_unlink
11 i386 execve sys_execve compat_sys_execve
12 i386 chdir sys_chdir
13 i386 time sys_time compat_sys_time
14 i386 mknod sys_mknod
15 i386 chmod sys_chmod
16 i386 lchown sys_lchown16
3 i386 read sys_read __sys_ia32_read
4 i386 write sys_write __sys_ia32_write
5 i386 open sys_open __compat_sys_ia32_open
6 i386 close sys_close __sys_ia32_close
7 i386 waitpid sys_waitpid __sys_ia32_waitpid
8 i386 creat sys_creat __sys_ia32_creat
9 i386 link sys_link __sys_ia32_link
10 i386 unlink sys_unlink __sys_ia32_unlink
11 i386 execve sys_execve __compat_sys_ia32_execve
12 i386 chdir sys_chdir __sys_ia32_chdir
13 i386 time sys_time __compat_sys_ia32_time
14 i386 mknod sys_mknod __sys_ia32_mknod
15 i386 chmod sys_chmod __sys_ia32_chmod
16 i386 lchown sys_lchown16 __sys_ia32_lchown16
17 i386 break
18 i386 oldstat sys_stat
19 i386 lseek sys_lseek compat_sys_lseek
18 i386 oldstat sys_stat __sys_ia32_stat
19 i386 lseek sys_lseek __compat_sys_ia32_lseek
20 i386 getpid sys_getpid
21 i386 mount sys_mount compat_sys_mount
22 i386 umount sys_oldumount
23 i386 setuid sys_setuid16
21 i386 mount sys_mount __compat_sys_ia32_mount
22 i386 umount sys_oldumount __sys_ia32_oldumount
23 i386 setuid sys_setuid16 __sys_ia32_setuid16
24 i386 getuid sys_getuid16
25 i386 stime sys_stime compat_sys_stime
26 i386 ptrace sys_ptrace compat_sys_ptrace
27 i386 alarm sys_alarm
28 i386 oldfstat sys_fstat
25 i386 stime sys_stime __compat_sys_ia32_stime
26 i386 ptrace sys_ptrace __compat_sys_ia32_ptrace
27 i386 alarm sys_alarm __sys_ia32_alarm
28 i386 oldfstat sys_fstat __sys_ia32_fstat
29 i386 pause sys_pause
30 i386 utime sys_utime compat_sys_utime
30 i386 utime sys_utime __compat_sys_ia32_utime
31 i386 stty
32 i386 gtty
33 i386 access sys_access
34 i386 nice sys_nice
33 i386 access sys_access __sys_ia32_access
34 i386 nice sys_nice __sys_ia32_nice
35 i386 ftime
36 i386 sync sys_sync
37 i386 kill sys_kill
38 i386 rename sys_rename
39 i386 mkdir sys_mkdir
40 i386 rmdir sys_rmdir
41 i386 dup sys_dup
42 i386 pipe sys_pipe
43 i386 times sys_times compat_sys_times
37 i386 kill sys_kill __sys_ia32_kill
38 i386 rename sys_rename __sys_ia32_rename
39 i386 mkdir sys_mkdir __sys_ia32_mkdir
40 i386 rmdir sys_rmdir __sys_ia32_rmdir
41 i386 dup sys_dup __sys_ia32_dup
42 i386 pipe sys_pipe __sys_ia32_pipe
43 i386 times sys_times __compat_sys_ia32_times
44 i386 prof
45 i386 brk sys_brk
46 i386 setgid sys_setgid16
45 i386 brk sys_brk __sys_ia32_brk
46 i386 setgid sys_setgid16 __sys_ia32_setgid16
47 i386 getgid sys_getgid16
48 i386 signal sys_signal
48 i386 signal sys_signal __sys_ia32_signal
49 i386 geteuid sys_geteuid16
50 i386 getegid sys_getegid16
51 i386 acct sys_acct
52 i386 umount2 sys_umount
51 i386 acct sys_acct __sys_ia32_acct
52 i386 umount2 sys_umount __sys_ia32_umount
53 i386 lock
54 i386 ioctl sys_ioctl compat_sys_ioctl
55 i386 fcntl sys_fcntl compat_sys_fcntl64
54 i386 ioctl sys_ioctl __compat_sys_ia32_ioctl
55 i386 fcntl sys_fcntl __compat_sys_ia32_fcntl64
56 i386 mpx
57 i386 setpgid sys_setpgid
57 i386 setpgid sys_setpgid __sys_ia32_setpgid
58 i386 ulimit
59 i386 oldolduname sys_olduname
60 i386 umask sys_umask
61 i386 chroot sys_chroot
62 i386 ustat sys_ustat compat_sys_ustat
63 i386 dup2 sys_dup2
59 i386 oldolduname sys_olduname __sys_ia32_olduname
60 i386 umask sys_umask __sys_ia32_umask
61 i386 chroot sys_chroot __sys_ia32_chroot
62 i386 ustat sys_ustat __compat_sys_ia32_ustat
63 i386 dup2 sys_dup2 __sys_ia32_dup2
64 i386 getppid sys_getppid
65 i386 getpgrp sys_getpgrp
66 i386 setsid sys_setsid
67 i386 sigaction sys_sigaction compat_sys_sigaction
67 i386 sigaction sys_sigaction __compat_sys_ia32_sigaction
68 i386 sgetmask sys_sgetmask
69 i386 ssetmask sys_ssetmask
70 i386 setreuid sys_setreuid16
71 i386 setregid sys_setregid16
72 i386 sigsuspend sys_sigsuspend
73 i386 sigpending sys_sigpending compat_sys_sigpending
74 i386 sethostname sys_sethostname
75 i386 setrlimit sys_setrlimit compat_sys_setrlimit
76 i386 getrlimit sys_old_getrlimit compat_sys_old_getrlimit
77 i386 getrusage sys_getrusage compat_sys_getrusage
78 i386 gettimeofday sys_gettimeofday compat_sys_gettimeofday
79 i386 settimeofday sys_settimeofday compat_sys_settimeofday
80 i386 getgroups sys_getgroups16
81 i386 setgroups sys_setgroups16
82 i386 select sys_old_select compat_sys_old_select
83 i386 symlink sys_symlink
84 i386 oldlstat sys_lstat
85 i386 readlink sys_readlink
86 i386 uselib sys_uselib
87 i386 swapon sys_swapon
88 i386 reboot sys_reboot
89 i386 readdir sys_old_readdir compat_sys_old_readdir
90 i386 mmap sys_old_mmap compat_sys_x86_mmap
91 i386 munmap sys_munmap
92 i386 truncate sys_truncate compat_sys_truncate
93 i386 ftruncate sys_ftruncate compat_sys_ftruncate
94 i386 fchmod sys_fchmod
95 i386 fchown sys_fchown16
96 i386 getpriority sys_getpriority
97 i386 setpriority sys_setpriority
69 i386 ssetmask sys_ssetmask __sys_ia32_ssetmask
70 i386 setreuid sys_setreuid16 __sys_ia32_setreuid16
71 i386 setregid sys_setregid16 __sys_ia32_setregid16
72 i386 sigsuspend sys_sigsuspend __sys_ia32_sigsuspend
73 i386 sigpending sys_sigpending __compat_sys_ia32_sigpending
74 i386 sethostname sys_sethostname __sys_ia32_sethostname
75 i386 setrlimit sys_setrlimit __compat_sys_ia32_setrlimit
76 i386 getrlimit sys_old_getrlimit __compat_sys_ia32_old_getrlimit
77 i386 getrusage sys_getrusage __compat_sys_ia32_getrusage
78 i386 gettimeofday sys_gettimeofday __compat_sys_ia32_gettimeofday
79 i386 settimeofday sys_settimeofday __compat_sys_ia32_settimeofday
80 i386 getgroups sys_getgroups16 __sys_ia32_getgroups16
81 i386 setgroups sys_setgroups16 __sys_ia32_setgroups16
82 i386 select sys_old_select __compat_sys_ia32_old_select
83 i386 symlink sys_symlink __sys_ia32_symlink
84 i386 oldlstat sys_lstat __sys_ia32_lstat
85 i386 readlink sys_readlink __sys_ia32_readlink
86 i386 uselib sys_uselib __sys_ia32_uselib
87 i386 swapon sys_swapon __sys_ia32_swapon
88 i386 reboot sys_reboot __sys_ia32_reboot
89 i386 readdir sys_old_readdir __compat_sys_ia32_old_readdir
90 i386 mmap sys_old_mmap __compat_sys_ia32_x86_mmap
91 i386 munmap sys_munmap __sys_ia32_munmap
92 i386 truncate sys_truncate __compat_sys_ia32_truncate
93 i386 ftruncate sys_ftruncate __compat_sys_ia32_ftruncate
94 i386 fchmod sys_fchmod __sys_ia32_fchmod
95 i386 fchown sys_fchown16 __sys_ia32_fchown16
96 i386 getpriority sys_getpriority __sys_ia32_getpriority
97 i386 setpriority sys_setpriority __sys_ia32_setpriority
98 i386 profil
99 i386 statfs sys_statfs compat_sys_statfs
100 i386 fstatfs sys_fstatfs compat_sys_fstatfs
101 i386 ioperm sys_ioperm
102 i386 socketcall sys_socketcall compat_sys_socketcall
103 i386 syslog sys_syslog
104 i386 setitimer sys_setitimer compat_sys_setitimer
105 i386 getitimer sys_getitimer compat_sys_getitimer
106 i386 stat sys_newstat compat_sys_newstat
107 i386 lstat sys_newlstat compat_sys_newlstat
108 i386 fstat sys_newfstat compat_sys_newfstat
109 i386 olduname sys_uname
110 i386 iopl sys_iopl
99 i386 statfs sys_statfs __compat_sys_ia32_statfs
100 i386 fstatfs sys_fstatfs __compat_sys_ia32_fstatfs
101 i386 ioperm sys_ioperm __sys_ia32_ioperm
102 i386 socketcall sys_socketcall __compat_sys_ia32_socketcall
103 i386 syslog sys_syslog __sys_ia32_syslog
104 i386 setitimer sys_setitimer __compat_sys_ia32_setitimer
105 i386 getitimer sys_getitimer __compat_sys_ia32_getitimer
106 i386 stat sys_newstat __compat_sys_ia32_newstat
107 i386 lstat sys_newlstat __compat_sys_ia32_newlstat
108 i386 fstat sys_newfstat __compat_sys_ia32_newfstat
109 i386 olduname sys_uname __sys_ia32_uname
110 i386 iopl sys_iopl __sys_ia32_iopl
111 i386 vhangup sys_vhangup
112 i386 idle
113 i386 vm86old sys_vm86old sys_ni_syscall
114 i386 wait4 sys_wait4 compat_sys_wait4
115 i386 swapoff sys_swapoff
116 i386 sysinfo sys_sysinfo compat_sys_sysinfo
117 i386 ipc sys_ipc compat_sys_ipc
118 i386 fsync sys_fsync
114 i386 wait4 sys_wait4 __compat_sys_ia32_wait4
115 i386 swapoff sys_swapoff __sys_ia32_swapoff
116 i386 sysinfo sys_sysinfo __compat_sys_ia32_sysinfo
117 i386 ipc sys_ipc __compat_sys_ia32_ipc
118 i386 fsync sys_fsync __sys_ia32_fsync
119 i386 sigreturn sys_sigreturn sys32_sigreturn
120 i386 clone sys_clone compat_sys_x86_clone
121 i386 setdomainname sys_setdomainname
122 i386 uname sys_newuname
123 i386 modify_ldt sys_modify_ldt
124 i386 adjtimex sys_adjtimex compat_sys_adjtimex
125 i386 mprotect sys_mprotect
126 i386 sigprocmask sys_sigprocmask compat_sys_sigprocmask
120 i386 clone sys_clone __compat_sys_ia32_x86_clone
121 i386 setdomainname sys_setdomainname __sys_ia32_setdomainname
122 i386 uname sys_newuname __sys_ia32_newuname
123 i386 modify_ldt sys_modify_ldt __sys_ia32_modify_ldt
124 i386 adjtimex sys_adjtimex __compat_sys_ia32_adjtimex
125 i386 mprotect sys_mprotect __sys_ia32_mprotect
126 i386 sigprocmask sys_sigprocmask __compat_sys_ia32_sigprocmask
127 i386 create_module
128 i386 init_module sys_init_module
129 i386 delete_module sys_delete_module
128 i386 init_module sys_init_module __sys_ia32_init_module
129 i386 delete_module sys_delete_module __sys_ia32_delete_module
130 i386 get_kernel_syms
131 i386 quotactl sys_quotactl compat_sys_quotactl32
132 i386 getpgid sys_getpgid
133 i386 fchdir sys_fchdir
134 i386 bdflush sys_bdflush
135 i386 sysfs sys_sysfs
136 i386 personality sys_personality
131 i386 quotactl sys_quotactl __compat_sys_ia32_quotactl32
132 i386 getpgid sys_getpgid __sys_ia32_getpgid
133 i386 fchdir sys_fchdir __sys_ia32_fchdir
134 i386 bdflush sys_bdflush __sys_ia32_bdflush
135 i386 sysfs sys_sysfs __sys_ia32_sysfs
136 i386 personality sys_personality __sys_ia32_personality
137 i386 afs_syscall
138 i386 setfsuid sys_setfsuid16
139 i386 setfsgid sys_setfsgid16
140 i386 _llseek sys_llseek
141 i386 getdents sys_getdents compat_sys_getdents
142 i386 _newselect sys_select compat_sys_select
143 i386 flock sys_flock
144 i386 msync sys_msync
145 i386 readv sys_readv compat_sys_readv
146 i386 writev sys_writev compat_sys_writev
147 i386 getsid sys_getsid
148 i386 fdatasync sys_fdatasync
149 i386 _sysctl sys_sysctl compat_sys_sysctl
150 i386 mlock sys_mlock
151 i386 munlock sys_munlock
152 i386 mlockall sys_mlockall
138 i386 setfsuid sys_setfsuid16 __sys_ia32_setfsuid16
139 i386 setfsgid sys_setfsgid16 __sys_ia32_setfsgid16
140 i386 _llseek sys_llseek __sys_ia32_llseek
141 i386 getdents sys_getdents __compat_sys_ia32_getdents
142 i386 _newselect sys_select __compat_sys_ia32_select
143 i386 flock sys_flock __sys_ia32_flock
144 i386 msync sys_msync __sys_ia32_msync
145 i386 readv sys_readv __compat_sys_ia32_readv
146 i386 writev sys_writev __compat_sys_ia32_writev
147 i386 getsid sys_getsid __sys_ia32_getsid
148 i386 fdatasync sys_fdatasync __sys_ia32_fdatasync
149 i386 _sysctl sys_sysctl __compat_sys_ia32_sysctl
150 i386 mlock sys_mlock __sys_ia32_mlock
151 i386 munlock sys_munlock __sys_ia32_munlock
152 i386 mlockall sys_mlockall __sys_ia32_mlockall
153 i386 munlockall sys_munlockall
154 i386 sched_setparam sys_sched_setparam
155 i386 sched_getparam sys_sched_getparam
156 i386 sched_setscheduler sys_sched_setscheduler
157 i386 sched_getscheduler sys_sched_getscheduler
154 i386 sched_setparam sys_sched_setparam __sys_ia32_sched_setparam
155 i386 sched_getparam sys_sched_getparam __sys_ia32_sched_getparam
156 i386 sched_setscheduler sys_sched_setscheduler __sys_ia32_sched_setscheduler
157 i386 sched_getscheduler sys_sched_getscheduler __sys_ia32_sched_getscheduler
158 i386 sched_yield sys_sched_yield
159 i386 sched_get_priority_max sys_sched_get_priority_max
160 i386 sched_get_priority_min sys_sched_get_priority_min
161 i386 sched_rr_get_interval sys_sched_rr_get_interval compat_sys_sched_rr_get_interval
162 i386 nanosleep sys_nanosleep compat_sys_nanosleep
163 i386 mremap sys_mremap
164 i386 setresuid sys_setresuid16
165 i386 getresuid sys_getresuid16
159 i386 sched_get_priority_max sys_sched_get_priority_max __sys_ia32_sched_get_priority_max
160 i386 sched_get_priority_min sys_sched_get_priority_min __sys_ia32_sched_get_priority_min
161 i386 sched_rr_get_interval sys_sched_rr_get_interval __compat_sys_ia32_sched_rr_get_interval
162 i386 nanosleep sys_nanosleep __compat_sys_ia32_nanosleep
163 i386 mremap sys_mremap __sys_ia32_mremap
164 i386 setresuid sys_setresuid16 __sys_ia32_setresuid16
165 i386 getresuid sys_getresuid16 __sys_ia32_getresuid16
166 i386 vm86 sys_vm86 sys_ni_syscall
167 i386 query_module
168 i386 poll sys_poll
168 i386 poll sys_poll __sys_ia32_poll
169 i386 nfsservctl
170 i386 setresgid sys_setresgid16
171 i386 getresgid sys_getresgid16
172 i386 prctl sys_prctl
170 i386 setresgid sys_setresgid16 __sys_ia32_setresgid16
171 i386 getresgid sys_getresgid16 __sys_ia32_getresgid16
172 i386 prctl sys_prctl __sys_ia32_prctl
173 i386 rt_sigreturn sys_rt_sigreturn sys32_rt_sigreturn
174 i386 rt_sigaction sys_rt_sigaction compat_sys_rt_sigaction
175 i386 rt_sigprocmask sys_rt_sigprocmask
176 i386 rt_sigpending sys_rt_sigpending compat_sys_rt_sigpending
177 i386 rt_sigtimedwait sys_rt_sigtimedwait compat_sys_rt_sigtimedwait
178 i386 rt_sigqueueinfo sys_rt_sigqueueinfo compat_sys_rt_sigqueueinfo
179 i386 rt_sigsuspend sys_rt_sigsuspend
180 i386 pread64 sys_pread64 compat_sys_x86_pread
181 i386 pwrite64 sys_pwrite64 compat_sys_x86_pwrite
182 i386 chown sys_chown16
183 i386 getcwd sys_getcwd
184 i386 capget sys_capget
185 i386 capset sys_capset
186 i386 sigaltstack sys_sigaltstack compat_sys_sigaltstack
187 i386 sendfile sys_sendfile compat_sys_sendfile
174 i386 rt_sigaction sys_rt_sigaction __compat_sys_ia32_rt_sigaction
175 i386 rt_sigprocmask sys_rt_sigprocmask __sys_ia32_rt_sigprocmask
176 i386 rt_sigpending sys_rt_sigpending __compat_sys_ia32_rt_sigpending
177 i386 rt_sigtimedwait sys_rt_sigtimedwait __compat_sys_ia32_rt_sigtimedwait
178 i386 rt_sigqueueinfo sys_rt_sigqueueinfo __compat_sys_ia32_rt_sigqueueinfo
179 i386 rt_sigsuspend sys_rt_sigsuspend __sys_ia32_rt_sigsuspend
180 i386 pread64 sys_pread64 __compat_sys_ia32_x86_pread
181 i386 pwrite64 sys_pwrite64 __compat_sys_ia32_x86_pwrite
182 i386 chown sys_chown16 __sys_ia32_chown16
183 i386 getcwd sys_getcwd __sys_ia32_getcwd
184 i386 capget sys_capget __sys_ia32_capget
185 i386 capset sys_capset __sys_ia32_capset
186 i386 sigaltstack sys_sigaltstack __compat_sys_ia32_sigaltstack
187 i386 sendfile sys_sendfile __compat_sys_ia32_sendfile
188 i386 getpmsg
189 i386 putpmsg
190 i386 vfork sys_vfork
191 i386 ugetrlimit sys_getrlimit compat_sys_getrlimit
192 i386 mmap2 sys_mmap_pgoff
193 i386 truncate64 sys_truncate64 compat_sys_x86_truncate64
194 i386 ftruncate64 sys_ftruncate64 compat_sys_x86_ftruncate64
195 i386 stat64 sys_stat64 compat_sys_x86_stat64
196 i386 lstat64 sys_lstat64 compat_sys_x86_lstat64
197 i386 fstat64 sys_fstat64 compat_sys_x86_fstat64
198 i386 lchown32 sys_lchown
191 i386 ugetrlimit sys_getrlimit __compat_sys_ia32_getrlimit
192 i386 mmap2 sys_mmap_pgoff __sys_ia32_mmap_pgoff
193 i386 truncate64 sys_truncate64 __compat_sys_ia32_x86_truncate64
194 i386 ftruncate64 sys_ftruncate64 __compat_sys_ia32_x86_ftruncate64
195 i386 stat64 sys_stat64 __compat_sys_ia32_x86_stat64
196 i386 lstat64 sys_lstat64 __compat_sys_ia32_x86_lstat64
197 i386 fstat64 sys_fstat64 __compat_sys_ia32_x86_fstat64
198 i386 lchown32 sys_lchown __sys_ia32_lchown
199 i386 getuid32 sys_getuid
200 i386 getgid32 sys_getgid
201 i386 geteuid32 sys_geteuid
202 i386 getegid32 sys_getegid
203 i386 setreuid32 sys_setreuid
204 i386 setregid32 sys_setregid
205 i386 getgroups32 sys_getgroups
206 i386 setgroups32 sys_setgroups
207 i386 fchown32 sys_fchown
208 i386 setresuid32 sys_setresuid
209 i386 getresuid32 sys_getresuid
210 i386 setresgid32 sys_setresgid
211 i386 getresgid32 sys_getresgid
212 i386 chown32 sys_chown
213 i386 setuid32 sys_setuid
214 i386 setgid32 sys_setgid
215 i386 setfsuid32 sys_setfsuid
216 i386 setfsgid32 sys_setfsgid
217 i386 pivot_root sys_pivot_root
218 i386 mincore sys_mincore
219 i386 madvise sys_madvise
220 i386 getdents64 sys_getdents64
221 i386 fcntl64 sys_fcntl64 compat_sys_fcntl64
203 i386 setreuid32 sys_setreuid __sys_ia32_setreuid
204 i386 setregid32 sys_setregid __sys_ia32_setregid
205 i386 getgroups32 sys_getgroups __sys_ia32_getgroups
206 i386 setgroups32 sys_setgroups __sys_ia32_setgroups
207 i386 fchown32 sys_fchown __sys_ia32_fchown
208 i386 setresuid32 sys_setresuid __sys_ia32_setresuid
209 i386 getresuid32 sys_getresuid __sys_ia32_getresuid
210 i386 setresgid32 sys_setresgid __sys_ia32_setresgid
211 i386 getresgid32 sys_getresgid __sys_ia32_getresgid
212 i386 chown32 sys_chown __sys_ia32_chown
213 i386 setuid32 sys_setuid __sys_ia32_setuid
214 i386 setgid32 sys_setgid __sys_ia32_setgid
215 i386 setfsuid32 sys_setfsuid __sys_ia32_setfsuid
216 i386 setfsgid32 sys_setfsgid __sys_ia32_setfsgid
217 i386 pivot_root sys_pivot_root __sys_ia32_pivot_root
218 i386 mincore sys_mincore __sys_ia32_mincore
219 i386 madvise sys_madvise __sys_ia32_madvise
220 i386 getdents64 sys_getdents64 __sys_ia32_getdents64
221 i386 fcntl64 sys_fcntl64 __compat_sys_ia32_fcntl64
# 222 is unused
# 223 is unused
224 i386 gettid sys_gettid
225 i386 readahead sys_readahead compat_sys_x86_readahead
226 i386 setxattr sys_setxattr
227 i386 lsetxattr sys_lsetxattr
228 i386 fsetxattr sys_fsetxattr
229 i386 getxattr sys_getxattr
230 i386 lgetxattr sys_lgetxattr
231 i386 fgetxattr sys_fgetxattr
232 i386 listxattr sys_listxattr
233 i386 llistxattr sys_llistxattr
234 i386 flistxattr sys_flistxattr
235 i386 removexattr sys_removexattr
236 i386 lremovexattr sys_lremovexattr
237 i386 fremovexattr sys_fremovexattr
238 i386 tkill sys_tkill
239 i386 sendfile64 sys_sendfile64
240 i386 futex sys_futex compat_sys_futex
241 i386 sched_setaffinity sys_sched_setaffinity compat_sys_sched_setaffinity
242 i386 sched_getaffinity sys_sched_getaffinity compat_sys_sched_getaffinity
243 i386 set_thread_area sys_set_thread_area
244 i386 get_thread_area sys_get_thread_area
245 i386 io_setup sys_io_setup compat_sys_io_setup
246 i386 io_destroy sys_io_destroy
247 i386 io_getevents sys_io_getevents compat_sys_io_getevents
248 i386 io_submit sys_io_submit compat_sys_io_submit
249 i386 io_cancel sys_io_cancel
250 i386 fadvise64 sys_fadvise64 compat_sys_x86_fadvise64
225 i386 readahead sys_readahead __compat_sys_ia32_x86_readahead
226 i386 setxattr sys_setxattr __sys_ia32_setxattr
227 i386 lsetxattr sys_lsetxattr __sys_ia32_lsetxattr
228 i386 fsetxattr sys_fsetxattr __sys_ia32_fsetxattr
229 i386 getxattr sys_getxattr __sys_ia32_getxattr
230 i386 lgetxattr sys_lgetxattr __sys_ia32_lgetxattr
231 i386 fgetxattr sys_fgetxattr __sys_ia32_fgetxattr
232 i386 listxattr sys_listxattr __sys_ia32_listxattr
233 i386 llistxattr sys_llistxattr __sys_ia32_llistxattr
234 i386 flistxattr sys_flistxattr __sys_ia32_flistxattr
235 i386 removexattr sys_removexattr __sys_ia32_removexattr
236 i386 lremovexattr sys_lremovexattr __sys_ia32_lremovexattr
237 i386 fremovexattr sys_fremovexattr __sys_ia32_fremovexattr
238 i386 tkill sys_tkill __sys_ia32_tkill
239 i386 sendfile64 sys_sendfile64 __sys_ia32_sendfile64
240 i386 futex sys_futex __compat_sys_ia32_futex
241 i386 sched_setaffinity sys_sched_setaffinity __compat_sys_ia32_sched_setaffinity
242 i386 sched_getaffinity sys_sched_getaffinity __compat_sys_ia32_sched_getaffinity
243 i386 set_thread_area sys_set_thread_area __sys_ia32_set_thread_area
244 i386 get_thread_area sys_get_thread_area __sys_ia32_get_thread_area
245 i386 io_setup sys_io_setup __compat_sys_ia32_io_setup
246 i386 io_destroy sys_io_destroy __sys_ia32_io_destroy
247 i386 io_getevents sys_io_getevents __compat_sys_ia32_io_getevents
248 i386 io_submit sys_io_submit __compat_sys_ia32_io_submit
249 i386 io_cancel sys_io_cancel __sys_ia32_io_cancel
250 i386 fadvise64 sys_fadvise64 __compat_sys_ia32_x86_fadvise64
# 251 is available for reuse (was briefly sys_set_zone_reclaim)
252 i386 exit_group sys_exit_group
253 i386 lookup_dcookie sys_lookup_dcookie compat_sys_lookup_dcookie
254 i386 epoll_create sys_epoll_create
255 i386 epoll_ctl sys_epoll_ctl
256 i386 epoll_wait sys_epoll_wait
257 i386 remap_file_pages sys_remap_file_pages
258 i386 set_tid_address sys_set_tid_address
259 i386 timer_create sys_timer_create compat_sys_timer_create
260 i386 timer_settime sys_timer_settime compat_sys_timer_settime
261 i386 timer_gettime sys_timer_gettime compat_sys_timer_gettime
262 i386 timer_getoverrun sys_timer_getoverrun
263 i386 timer_delete sys_timer_delete
264 i386 clock_settime sys_clock_settime compat_sys_clock_settime
265 i386 clock_gettime sys_clock_gettime compat_sys_clock_gettime
266 i386 clock_getres sys_clock_getres compat_sys_clock_getres
267 i386 clock_nanosleep sys_clock_nanosleep compat_sys_clock_nanosleep
268 i386 statfs64 sys_statfs64 compat_sys_statfs64
269 i386 fstatfs64 sys_fstatfs64 compat_sys_fstatfs64
270 i386 tgkill sys_tgkill
271 i386 utimes sys_utimes compat_sys_utimes
272 i386 fadvise64_64 sys_fadvise64_64 compat_sys_x86_fadvise64_64
252 i386 exit_group sys_exit_group __sys_ia32_exit_group
253 i386 lookup_dcookie sys_lookup_dcookie __compat_sys_ia32_lookup_dcookie
254 i386 epoll_create sys_epoll_create __sys_ia32_epoll_create
255 i386 epoll_ctl sys_epoll_ctl __sys_ia32_epoll_ctl
256 i386 epoll_wait sys_epoll_wait __sys_ia32_epoll_wait
257 i386 remap_file_pages sys_remap_file_pages __sys_ia32_remap_file_pages
258 i386 set_tid_address sys_set_tid_address __sys_ia32_set_tid_address
259 i386 timer_create sys_timer_create __compat_sys_ia32_timer_create
260 i386 timer_settime sys_timer_settime __compat_sys_ia32_timer_settime
261 i386 timer_gettime sys_timer_gettime __compat_sys_ia32_timer_gettime
262 i386 timer_getoverrun sys_timer_getoverrun __sys_ia32_timer_getoverrun
263 i386 timer_delete sys_timer_delete __sys_ia32_timer_delete
264 i386 clock_settime sys_clock_settime __compat_sys_ia32_clock_settime
265 i386 clock_gettime sys_clock_gettime __compat_sys_ia32_clock_gettime
266 i386 clock_getres sys_clock_getres __compat_sys_ia32_clock_getres
267 i386 clock_nanosleep sys_clock_nanosleep __compat_sys_ia32_clock_nanosleep
268 i386 statfs64 sys_statfs64 __compat_sys_ia32_statfs64
269 i386 fstatfs64 sys_fstatfs64 __compat_sys_ia32_fstatfs64
270 i386 tgkill sys_tgkill __sys_ia32_tgkill
271 i386 utimes sys_utimes __compat_sys_ia32_utimes
272 i386 fadvise64_64 sys_fadvise64_64 __compat_sys_ia32_x86_fadvise64_64
273 i386 vserver
274 i386 mbind sys_mbind
275 i386 get_mempolicy sys_get_mempolicy compat_sys_get_mempolicy
276 i386 set_mempolicy sys_set_mempolicy
277 i386 mq_open sys_mq_open compat_sys_mq_open
278 i386 mq_unlink sys_mq_unlink
279 i386 mq_timedsend sys_mq_timedsend compat_sys_mq_timedsend
280 i386 mq_timedreceive sys_mq_timedreceive compat_sys_mq_timedreceive
281 i386 mq_notify sys_mq_notify compat_sys_mq_notify
282 i386 mq_getsetattr sys_mq_getsetattr compat_sys_mq_getsetattr
283 i386 kexec_load sys_kexec_load compat_sys_kexec_load
284 i386 waitid sys_waitid compat_sys_waitid
274 i386 mbind sys_mbind __sys_ia32_mbind
275 i386 get_mempolicy sys_get_mempolicy __compat_sys_ia32_get_mempolicy
276 i386 set_mempolicy sys_set_mempolicy __sys_ia32_set_mempolicy
277 i386 mq_open sys_mq_open __compat_sys_ia32_mq_open
278 i386 mq_unlink sys_mq_unlink __sys_ia32_mq_unlink
279 i386 mq_timedsend sys_mq_timedsend __compat_sys_ia32_mq_timedsend
280 i386 mq_timedreceive sys_mq_timedreceive __compat_sys_ia32_mq_timedreceive
281 i386 mq_notify sys_mq_notify __compat_sys_ia32_mq_notify
282 i386 mq_getsetattr sys_mq_getsetattr __compat_sys_ia32_mq_getsetattr
283 i386 kexec_load sys_kexec_load __compat_sys_ia32_kexec_load
284 i386 waitid sys_waitid __compat_sys_ia32_waitid
# 285 sys_setaltroot
286 i386 add_key sys_add_key
287 i386 request_key sys_request_key
288 i386 keyctl sys_keyctl compat_sys_keyctl
289 i386 ioprio_set sys_ioprio_set
290 i386 ioprio_get sys_ioprio_get
286 i386 add_key sys_add_key __sys_ia32_add_key
287 i386 request_key sys_request_key __sys_ia32_request_key
288 i386 keyctl sys_keyctl __compat_sys_ia32_keyctl
289 i386 ioprio_set sys_ioprio_set __sys_ia32_ioprio_set
290 i386 ioprio_get sys_ioprio_get __sys_ia32_ioprio_get
291 i386 inotify_init sys_inotify_init
292 i386 inotify_add_watch sys_inotify_add_watch
293 i386 inotify_rm_watch sys_inotify_rm_watch
294 i386 migrate_pages sys_migrate_pages
295 i386 openat sys_openat compat_sys_openat
296 i386 mkdirat sys_mkdirat
297 i386 mknodat sys_mknodat
298 i386 fchownat sys_fchownat
299 i386 futimesat sys_futimesat compat_sys_futimesat
300 i386 fstatat64 sys_fstatat64 compat_sys_x86_fstatat
301 i386 unlinkat sys_unlinkat
302 i386 renameat sys_renameat
303 i386 linkat sys_linkat
304 i386 symlinkat sys_symlinkat
305 i386 readlinkat sys_readlinkat
306 i386 fchmodat sys_fchmodat
307 i386 faccessat sys_faccessat
308 i386 pselect6 sys_pselect6 compat_sys_pselect6
309 i386 ppoll sys_ppoll compat_sys_ppoll
310 i386 unshare sys_unshare
311 i386 set_robust_list sys_set_robust_list compat_sys_set_robust_list
312 i386 get_robust_list sys_get_robust_list compat_sys_get_robust_list
313 i386 splice sys_splice
314 i386 sync_file_range sys_sync_file_range compat_sys_x86_sync_file_range
315 i386 tee sys_tee
316 i386 vmsplice sys_vmsplice compat_sys_vmsplice
317 i386 move_pages sys_move_pages compat_sys_move_pages
318 i386 getcpu sys_getcpu
319 i386 epoll_pwait sys_epoll_pwait
320 i386 utimensat sys_utimensat compat_sys_utimensat
321 i386 signalfd sys_signalfd compat_sys_signalfd
322 i386 timerfd_create sys_timerfd_create
323 i386 eventfd sys_eventfd
324 i386 fallocate sys_fallocate compat_sys_x86_fallocate
325 i386 timerfd_settime sys_timerfd_settime compat_sys_timerfd_settime
326 i386 timerfd_gettime sys_timerfd_gettime compat_sys_timerfd_gettime
327 i386 signalfd4 sys_signalfd4 compat_sys_signalfd4
328 i386 eventfd2 sys_eventfd2
329 i386 epoll_create1 sys_epoll_create1
330 i386 dup3 sys_dup3
331 i386 pipe2 sys_pipe2
332 i386 inotify_init1 sys_inotify_init1
333 i386 preadv sys_preadv compat_sys_preadv
334 i386 pwritev sys_pwritev compat_sys_pwritev
335 i386 rt_tgsigqueueinfo sys_rt_tgsigqueueinfo compat_sys_rt_tgsigqueueinfo
336 i386 perf_event_open sys_perf_event_open
337 i386 recvmmsg sys_recvmmsg compat_sys_recvmmsg
338 i386 fanotify_init sys_fanotify_init
339 i386 fanotify_mark sys_fanotify_mark compat_sys_fanotify_mark
340 i386 prlimit64 sys_prlimit64
341 i386 name_to_handle_at sys_name_to_handle_at
342 i386 open_by_handle_at sys_open_by_handle_at compat_sys_open_by_handle_at
343 i386 clock_adjtime sys_clock_adjtime compat_sys_clock_adjtime
344 i386 syncfs sys_syncfs
345 i386 sendmmsg sys_sendmmsg compat_sys_sendmmsg
346 i386 setns sys_setns
347 i386 process_vm_readv sys_process_vm_readv compat_sys_process_vm_readv
348 i386 process_vm_writev sys_process_vm_writev compat_sys_process_vm_writev
349 i386 kcmp sys_kcmp
350 i386 finit_module sys_finit_module
351 i386 sched_setattr sys_sched_setattr
352 i386 sched_getattr sys_sched_getattr
353 i386 renameat2 sys_renameat2
354 i386 seccomp sys_seccomp
355 i386 getrandom sys_getrandom
356 i386 memfd_create sys_memfd_create
357 i386 bpf sys_bpf
358 i386 execveat sys_execveat compat_sys_execveat
359 i386 socket sys_socket
360 i386 socketpair sys_socketpair
361 i386 bind sys_bind
362 i386 connect sys_connect
363 i386 listen sys_listen
364 i386 accept4 sys_accept4
365 i386 getsockopt sys_getsockopt compat_sys_getsockopt
366 i386 setsockopt sys_setsockopt compat_sys_setsockopt
367 i386 getsockname sys_getsockname
368 i386 getpeername sys_getpeername
369 i386 sendto sys_sendto
370 i386 sendmsg sys_sendmsg compat_sys_sendmsg
371 i386 recvfrom sys_recvfrom compat_sys_recvfrom
372 i386 recvmsg sys_recvmsg compat_sys_recvmsg
373 i386 shutdown sys_shutdown
374 i386 userfaultfd sys_userfaultfd
375 i386 membarrier sys_membarrier
376 i386 mlock2 sys_mlock2
377 i386 copy_file_range sys_copy_file_range
378 i386 preadv2 sys_preadv2 compat_sys_preadv2
379 i386 pwritev2 sys_pwritev2 compat_sys_pwritev2
380 i386 pkey_mprotect sys_pkey_mprotect
381 i386 pkey_alloc sys_pkey_alloc
382 i386 pkey_free sys_pkey_free
383 i386 statx sys_statx
384 i386 arch_prctl sys_arch_prctl compat_sys_arch_prctl
292 i386 inotify_add_watch sys_inotify_add_watch __sys_ia32_inotify_add_watch
293 i386 inotify_rm_watch sys_inotify_rm_watch __sys_ia32_inotify_rm_watch
294 i386 migrate_pages sys_migrate_pages __sys_ia32_migrate_pages
295 i386 openat sys_openat __compat_sys_ia32_openat
296 i386 mkdirat sys_mkdirat __sys_ia32_mkdirat
297 i386 mknodat sys_mknodat __sys_ia32_mknodat
298 i386 fchownat sys_fchownat __sys_ia32_fchownat
299 i386 futimesat sys_futimesat __compat_sys_ia32_futimesat
300 i386 fstatat64 sys_fstatat64 __compat_sys_ia32_x86_fstatat
301 i386 unlinkat sys_unlinkat __sys_ia32_unlinkat
302 i386 renameat sys_renameat __sys_ia32_renameat
303 i386 linkat sys_linkat __sys_ia32_linkat
304 i386 symlinkat sys_symlinkat __sys_ia32_symlinkat
305 i386 readlinkat sys_readlinkat __sys_ia32_readlinkat
306 i386 fchmodat sys_fchmodat __sys_ia32_fchmodat
307 i386 faccessat sys_faccessat __sys_ia32_faccessat
308 i386 pselect6 sys_pselect6 __compat_sys_ia32_pselect6
309 i386 ppoll sys_ppoll __compat_sys_ia32_ppoll
310 i386 unshare sys_unshare __sys_ia32_unshare
311 i386 set_robust_list sys_set_robust_list __compat_sys_ia32_set_robust_list
312 i386 get_robust_list sys_get_robust_list __compat_sys_ia32_get_robust_list
313 i386 splice sys_splice __sys_ia32_splice
314 i386 sync_file_range sys_sync_file_range __compat_sys_ia32_x86_sync_file_range
315 i386 tee sys_tee __sys_ia32_tee
316 i386 vmsplice sys_vmsplice __compat_sys_ia32_vmsplice
317 i386 move_pages sys_move_pages __compat_sys_ia32_move_pages
318 i386 getcpu sys_getcpu __sys_ia32_getcpu
319 i386 epoll_pwait sys_epoll_pwait __sys_ia32_epoll_pwait
320 i386 utimensat sys_utimensat __compat_sys_ia32_utimensat
321 i386 signalfd sys_signalfd __compat_sys_ia32_signalfd
322 i386 timerfd_create sys_timerfd_create __sys_ia32_timerfd_create
323 i386 eventfd sys_eventfd __sys_ia32_eventfd
324 i386 fallocate sys_fallocate __compat_sys_ia32_x86_fallocate
325 i386 timerfd_settime sys_timerfd_settime __compat_sys_ia32_timerfd_settime
326 i386 timerfd_gettime sys_timerfd_gettime __compat_sys_ia32_timerfd_gettime
327 i386 signalfd4 sys_signalfd4 __compat_sys_ia32_signalfd4
328 i386 eventfd2 sys_eventfd2 __sys_ia32_eventfd2
329 i386 epoll_create1 sys_epoll_create1 __sys_ia32_epoll_create1
330 i386 dup3 sys_dup3 __sys_ia32_dup3
331 i386 pipe2 sys_pipe2 __sys_ia32_pipe2
332 i386 inotify_init1 sys_inotify_init1 __sys_ia32_inotify_init1
333 i386 preadv sys_preadv __compat_sys_ia32_preadv
334 i386 pwritev sys_pwritev __compat_sys_ia32_pwritev
335 i386 rt_tgsigqueueinfo sys_rt_tgsigqueueinfo __compat_sys_ia32_rt_tgsigqueueinfo
336 i386 perf_event_open sys_perf_event_open __sys_ia32_perf_event_open
337 i386 recvmmsg sys_recvmmsg __compat_sys_ia32_recvmmsg
338 i386 fanotify_init sys_fanotify_init __sys_ia32_fanotify_init
339 i386 fanotify_mark sys_fanotify_mark __compat_sys_ia32_fanotify_mark
340 i386 prlimit64 sys_prlimit64 __sys_ia32_prlimit64
341 i386 name_to_handle_at sys_name_to_handle_at __sys_ia32_name_to_handle_at
342 i386 open_by_handle_at sys_open_by_handle_at __compat_sys_ia32_open_by_handle_at
343 i386 clock_adjtime sys_clock_adjtime __compat_sys_ia32_clock_adjtime
344 i386 syncfs sys_syncfs __sys_ia32_syncfs
345 i386 sendmmsg sys_sendmmsg __compat_sys_ia32_sendmmsg
346 i386 setns sys_setns __sys_ia32_setns
347 i386 process_vm_readv sys_process_vm_readv __compat_sys_ia32_process_vm_readv
348 i386 process_vm_writev sys_process_vm_writev __compat_sys_ia32_process_vm_writev
349 i386 kcmp sys_kcmp __sys_ia32_kcmp
350 i386 finit_module sys_finit_module __sys_ia32_finit_module
351 i386 sched_setattr sys_sched_setattr __sys_ia32_sched_setattr
352 i386 sched_getattr sys_sched_getattr __sys_ia32_sched_getattr
353 i386 renameat2 sys_renameat2 __sys_ia32_renameat2
354 i386 seccomp sys_seccomp __sys_ia32_seccomp
355 i386 getrandom sys_getrandom __sys_ia32_getrandom
356 i386 memfd_create sys_memfd_create __sys_ia32_memfd_create
357 i386 bpf sys_bpf __sys_ia32_bpf
358 i386 execveat sys_execveat __compat_sys_ia32_execveat
359 i386 socket sys_socket __sys_ia32_socket
360 i386 socketpair sys_socketpair __sys_ia32_socketpair
361 i386 bind sys_bind __sys_ia32_bind
362 i386 connect sys_connect __sys_ia32_connect
363 i386 listen sys_listen __sys_ia32_listen
364 i386 accept4 sys_accept4 __sys_ia32_accept4
365 i386 getsockopt sys_getsockopt __compat_sys_ia32_getsockopt
366 i386 setsockopt sys_setsockopt __compat_sys_ia32_setsockopt
367 i386 getsockname sys_getsockname __sys_ia32_getsockname
368 i386 getpeername sys_getpeername __sys_ia32_getpeername
369 i386 sendto sys_sendto __sys_ia32_sendto
370 i386 sendmsg sys_sendmsg __compat_sys_ia32_sendmsg
371 i386 recvfrom sys_recvfrom __compat_sys_ia32_recvfrom
372 i386 recvmsg sys_recvmsg __compat_sys_ia32_recvmsg
373 i386 shutdown sys_shutdown __sys_ia32_shutdown
374 i386 userfaultfd sys_userfaultfd __sys_ia32_userfaultfd
375 i386 membarrier sys_membarrier __sys_ia32_membarrier
376 i386 mlock2 sys_mlock2 __sys_ia32_mlock2
377 i386 copy_file_range sys_copy_file_range __sys_ia32_copy_file_range
378 i386 preadv2 sys_preadv2 __compat_sys_ia32_preadv2
379 i386 pwritev2 sys_pwritev2 __compat_sys_ia32_pwritev2
380 i386 pkey_mprotect sys_pkey_mprotect __sys_ia32_pkey_mprotect
381 i386 pkey_alloc sys_pkey_alloc __sys_ia32_pkey_alloc
382 i386 pkey_free sys_pkey_free __sys_ia32_pkey_free
383 i386 statx sys_statx __sys_ia32_statx
384 i386 arch_prctl sys_arch_prctl __compat_sys_ia32_arch_prctl
......@@ -342,41 +342,43 @@
#
# x32-specific system call numbers start at 512 to avoid cache impact
# for native 64-bit operation.
# for native 64-bit operation. The __compat_sys_x32 stubs are created
# on-the-fly for compat_sys_*() compatibility system calls if X86_X32
# is defined.
#
512 x32 rt_sigaction compat_sys_rt_sigaction
512 x32 rt_sigaction __compat_sys_x32_rt_sigaction
513 x32 rt_sigreturn sys32_x32_rt_sigreturn
514 x32 ioctl compat_sys_ioctl
515 x32 readv compat_sys_readv
516 x32 writev compat_sys_writev
517 x32 recvfrom compat_sys_recvfrom
518 x32 sendmsg compat_sys_sendmsg
519 x32 recvmsg compat_sys_recvmsg
520 x32 execve compat_sys_execve/ptregs
521 x32 ptrace compat_sys_ptrace
522 x32 rt_sigpending compat_sys_rt_sigpending
523 x32 rt_sigtimedwait compat_sys_rt_sigtimedwait
524 x32 rt_sigqueueinfo compat_sys_rt_sigqueueinfo
525 x32 sigaltstack compat_sys_sigaltstack
526 x32 timer_create compat_sys_timer_create
527 x32 mq_notify compat_sys_mq_notify
528 x32 kexec_load compat_sys_kexec_load
529 x32 waitid compat_sys_waitid
530 x32 set_robust_list compat_sys_set_robust_list
531 x32 get_robust_list compat_sys_get_robust_list
532 x32 vmsplice compat_sys_vmsplice
533 x32 move_pages compat_sys_move_pages
534 x32 preadv compat_sys_preadv64
535 x32 pwritev compat_sys_pwritev64
536 x32 rt_tgsigqueueinfo compat_sys_rt_tgsigqueueinfo
537 x32 recvmmsg compat_sys_recvmmsg
538 x32 sendmmsg compat_sys_sendmmsg
539 x32 process_vm_readv compat_sys_process_vm_readv
540 x32 process_vm_writev compat_sys_process_vm_writev
541 x32 setsockopt compat_sys_setsockopt
542 x32 getsockopt compat_sys_getsockopt
543 x32 io_setup compat_sys_io_setup
544 x32 io_submit compat_sys_io_submit
545 x32 execveat compat_sys_execveat/ptregs
546 x32 preadv2 compat_sys_preadv64v2
547 x32 pwritev2 compat_sys_pwritev64v2
514 x32 ioctl __compat_sys_x32_ioctl
515 x32 readv __compat_sys_x32_readv
516 x32 writev __compat_sys_x32_writev
517 x32 recvfrom __compat_sys_x32_recvfrom
518 x32 sendmsg __compat_sys_x32_sendmsg
519 x32 recvmsg __compat_sys_x32_recvmsg
520 x32 execve __compat_sys_x32_execve/ptregs
521 x32 ptrace __compat_sys_x32_ptrace
522 x32 rt_sigpending __compat_sys_x32_rt_sigpending
523 x32 rt_sigtimedwait __compat_sys_x32_rt_sigtimedwait
524 x32 rt_sigqueueinfo __compat_sys_x32_rt_sigqueueinfo
525 x32 sigaltstack __compat_sys_x32_sigaltstack
526 x32 timer_create __compat_sys_x32_timer_create
527 x32 mq_notify __compat_sys_x32_mq_notify
528 x32 kexec_load __compat_sys_x32_kexec_load
529 x32 waitid __compat_sys_x32_waitid
530 x32 set_robust_list __compat_sys_x32_set_robust_list
531 x32 get_robust_list __compat_sys_x32_get_robust_list
532 x32 vmsplice __compat_sys_x32_vmsplice
533 x32 move_pages __compat_sys_x32_move_pages
534 x32 preadv __compat_sys_x32_preadv64
535 x32 pwritev __compat_sys_x32_pwritev64
536 x32 rt_tgsigqueueinfo __compat_sys_x32_rt_tgsigqueueinfo
537 x32 recvmmsg __compat_sys_x32_recvmmsg
538 x32 sendmmsg __compat_sys_x32_sendmmsg
539 x32 process_vm_readv __compat_sys_x32_process_vm_readv
540 x32 process_vm_writev __compat_sys_x32_process_vm_writev
541 x32 setsockopt __compat_sys_x32_setsockopt
542 x32 getsockopt __compat_sys_x32_getsockopt
543 x32 io_setup __compat_sys_x32_io_setup
544 x32 io_submit __compat_sys_x32_io_submit
545 x32 execveat __compat_sys_x32_execveat/ptregs
546 x32 preadv2 __compat_sys_x32_preadv64v2
547 x32 pwritev2 __compat_sys_x32_pwritev64v2
......@@ -6,6 +6,111 @@
#ifndef _ASM_X86_SYSCALL_WRAPPER_H
#define _ASM_X86_SYSCALL_WRAPPER_H
/* Mapping of registers to parameters for syscalls on x86-64 and x32 */
#define SC_X86_64_REGS_TO_ARGS(x, ...) \
__MAP(x,__SC_ARGS \
,,regs->di,,regs->si,,regs->dx \
,,regs->r10,,regs->r8,,regs->r9) \
/* Mapping of registers to parameters for syscalls on i386 */
#define SC_IA32_REGS_TO_ARGS(x, ...) \
__MAP(x,__SC_ARGS \
,,(unsigned int)regs->bx,,(unsigned int)regs->cx \
,,(unsigned int)regs->dx,,(unsigned int)regs->si \
,,(unsigned int)regs->di,,(unsigned int)regs->bp)
#ifdef CONFIG_IA32_EMULATION
/*
* For IA32 emulation, we need to handle "compat" syscalls *and* create
* additional wrappers (aptly named __sys_ia32_sys_xyzzy) which decode the
* ia32 regs in the proper order for shared or "common" syscalls. As some
* syscalls may not be implemented, we need to expand COND_SYSCALL in
* kernel/sys_ni.c and SYS_NI in kernel/time/posix-stubs.c to cover this
* case as well.
*/
#define COMPAT_SC_IA32_STUBx(x, name, ...) \
asmlinkage long __compat_sys_ia32##name(const struct pt_regs *regs);\
ALLOW_ERROR_INJECTION(__compat_sys_ia32##name, ERRNO); \
asmlinkage long __compat_sys_ia32##name(const struct pt_regs *regs)\
{ \
return c_SyS##name(SC_IA32_REGS_TO_ARGS(x,__VA_ARGS__));\
} \
#define SC_IA32_WRAPPERx(x, name, ...) \
asmlinkage long __sys_ia32##name(const struct pt_regs *regs); \
ALLOW_ERROR_INJECTION(__sys_ia32##name, ERRNO); \
asmlinkage long __sys_ia32##name(const struct pt_regs *regs) \
{ \
return SyS##name(SC_IA32_REGS_TO_ARGS(x,__VA_ARGS__)); \
}
#define COND_SYSCALL(name) \
cond_syscall(sys_##name); \
cond_syscall(__sys_ia32_##name)
#define SYS_NI(name) \
SYSCALL_ALIAS(sys_##name, sys_ni_posix_timers); \
SYSCALL_ALIAS(__sys_ia32_##name, sys_ni_posix_timers)
#else /* CONFIG_IA32_EMULATION */
#define COMPAT_SC_IA32_STUBx(x, name, ...)
#define SC_IA32_WRAPPERx(x, fullname, name, ...)
#endif /* CONFIG_IA32_EMULATION */
#ifdef CONFIG_X86_X32
/*
* For the x32 ABI, we need to create a stub for compat_sys_*() which is aware
* of the x86-64-style parameter ordering of x32 syscalls. The syscalls common
* with x86_64 obviously do not need such care.
*/
#define COMPAT_SC_X32_STUBx(x, name, ...) \
asmlinkage long __compat_sys_x32##name(const struct pt_regs *regs);\
ALLOW_ERROR_INJECTION(__compat_sys_x32##name, ERRNO); \
asmlinkage long __compat_sys_x32##name(const struct pt_regs *regs)\
{ \
return c_SyS##name(SC_X86_64_REGS_TO_ARGS(x,__VA_ARGS__));\
} \
#else /* CONFIG_X86_X32 */
#define COMPAT_SC_X32_STUBx(x, name, ...)
#endif /* CONFIG_X86_X32 */
#ifdef CONFIG_COMPAT
/*
* Compat means IA32_EMULATION and/or X86_X32. As they use a different
* mapping of registers to parameters, we need to generate stubs for each
* of them. There is no need to implement COMPAT_SYSCALL_DEFINE0, as it is
* unused on x86.
*/
#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
static long c_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
COMPAT_SC_IA32_STUBx(x, name, __VA_ARGS__) \
COMPAT_SC_X32_STUBx(x, name, __VA_ARGS__) \
static long c_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
{ \
return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \
} \
static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
/*
* As some compat syscalls may not be implemented, we need to expand
* COND_SYSCALL_COMPAT in kernel/sys_ni.c and COMPAT_SYS_NI in
* kernel/time/posix-stubs.c to cover this case as well.
*/
#define COND_SYSCALL_COMPAT(name) \
cond_syscall(__compat_sys_ia32_##name); \
cond_syscall(__compat_sys_x32_##name)
#define COMPAT_SYS_NI(name) \
SYSCALL_ALIAS(__compat_sys_ia32_##name, sys_ni_posix_timers); \
SYSCALL_ALIAS(__compat_sys_x32_##name, sys_ni_posix_timers)
#endif /* CONFIG_COMPAT */
/*
* Instead of the generic __SYSCALL_DEFINEx() definition, this macro takes
* struct pt_regs *regs as the only argument of the syscall stub named
......@@ -34,9 +139,14 @@
* This approach avoids leaking random user-provided register content down
* the call chain.
*
* If IA32_EMULATION is enabled, this macro generates an additional wrapper
* named __sys_ia32_*() which decodes the struct pt_regs *regs according
* to the i386 calling convention (bx, cx, dx, si, di, bp).
*
* As the generic SYSCALL_DEFINE0() macro does not decode any parameters for
* obvious reasons, and passing struct pt_regs *regs to it in %rdi does not
* hurt, there is no need to override it.
* hurt, there is no need to override it, or to define it differently for
* IA32_EMULATION.
*/
#define __SYSCALL_DEFINEx(x, name, ...) \
asmlinkage long sys##name(const struct pt_regs *regs); \
......@@ -45,10 +155,9 @@
static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
asmlinkage long sys##name(const struct pt_regs *regs) \
{ \
return SyS##name(__MAP(x,__SC_ARGS \
,,regs->di,,regs->si,,regs->dx \
,,regs->r10,,regs->r8,,regs->r9)); \
return SyS##name(SC_X86_64_REGS_TO_ARGS(x,__VA_ARGS__));\
} \
SC_IA32_WRAPPERx(x, name, __VA_ARGS__) \
static long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
{ \
long ret = SYSC##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \
......
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