From ebeb8c82ffaf94435806ff0b686fffd41dd410b5 Mon Sep 17 00:00:00 2001 From: Dominik Brodowski Date: Thu, 5 Apr 2018 11:53:04 +0200 Subject: [PATCH] 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 | Signed-off-by: Linus Torvalds and was split up and heavily modified by me, in particular to base it on ARCH_HAS_SYSCALL_WRAPPER. Signed-off-by: Dominik Brodowski Acked-by: Linus Torvalds Cc: Al Viro Cc: Andrew Morton Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/20180405095307.3730-6-linux@dominikbrodowski.net Signed-off-by: Ingo Molnar --- arch/x86/Kconfig | 2 +- arch/x86/entry/common.c | 4 + arch/x86/entry/syscall_32.c | 15 +- arch/x86/entry/syscalls/syscall_32.tbl | 677 +++++++++++++------------ arch/x86/entry/syscalls/syscall_64.tbl | 74 +-- arch/x86/include/asm/syscall_wrapper.h | 117 ++++- 6 files changed, 509 insertions(+), 380 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 67348efc2540..7bbd6a174722 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -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 diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c index e1b91bffa988..425f798b39e3 100644 --- a/arch/x86/entry/common.c +++ b/arch/x86/entry/common.c @@ -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); diff --git a/arch/x86/entry/syscall_32.c b/arch/x86/entry/syscall_32.c index 95c294963612..47060dd8efb1 100644 --- a/arch/x86/entry/syscall_32.c +++ b/arch/x86/entry/syscall_32.c @@ -7,14 +7,23 @@ #include #include -#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 #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 diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index c58f75b088c5..7f09a3da0b3d 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -4,390 +4,395 @@ # The format is: # # +# 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 diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index 5aef183e2f85..a83c0f7f462f 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -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 diff --git a/arch/x86/include/asm/syscall_wrapper.h b/arch/x86/include/asm/syscall_wrapper.h index 702bdee377af..49d7e4970110 100644 --- a/arch/x86/include/asm/syscall_wrapper.h +++ b/arch/x86/include/asm/syscall_wrapper.h @@ -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__)); \ -- 2.30.2