linux/scripts/checksyscalls.sh
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   1#!/bin/sh
   2# SPDX-License-Identifier: GPL-2.0
   3#
   4# Check if current architecture are missing any function calls compared
   5# to i386.
   6# i386 define a number of legacy system calls that are i386 specific
   7# and listed below so they are ignored.
   8#
   9# Usage:
  10# checksyscalls.sh gcc gcc-options
  11#
  12
  13ignore_list() {
  14cat << EOF
  15#include <asm/types.h>
  16#include <asm/unistd.h>
  17
  18/* *at */
  19#define __IGNORE_open           /* openat */
  20#define __IGNORE_link           /* linkat */
  21#define __IGNORE_unlink         /* unlinkat */
  22#define __IGNORE_mknod          /* mknodat */
  23#define __IGNORE_chmod          /* fchmodat */
  24#define __IGNORE_chown          /* fchownat */
  25#define __IGNORE_mkdir          /* mkdirat */
  26#define __IGNORE_rmdir          /* unlinkat */
  27#define __IGNORE_lchown         /* fchownat */
  28#define __IGNORE_access         /* faccessat */
  29#define __IGNORE_rename         /* renameat2 */
  30#define __IGNORE_readlink       /* readlinkat */
  31#define __IGNORE_symlink        /* symlinkat */
  32#define __IGNORE_utimes         /* futimesat */
  33#define __IGNORE_stat           /* fstatat */
  34#define __IGNORE_lstat          /* fstatat */
  35#define __IGNORE_stat64         /* fstatat64 */
  36#define __IGNORE_lstat64        /* fstatat64 */
  37
  38#ifndef __ARCH_WANT_SET_GET_RLIMIT
  39#define __IGNORE_getrlimit      /* getrlimit */
  40#define __IGNORE_setrlimit      /* setrlimit */
  41#endif
  42
  43#ifndef __ARCH_WANT_MEMFD_SECRET
  44#define __IGNORE_memfd_secret
  45#endif
  46
  47/* Missing flags argument */
  48#define __IGNORE_renameat       /* renameat2 */
  49
  50/* CLOEXEC flag */
  51#define __IGNORE_pipe           /* pipe2 */
  52#define __IGNORE_dup2           /* dup3 */
  53#define __IGNORE_epoll_create   /* epoll_create1 */
  54#define __IGNORE_inotify_init   /* inotify_init1 */
  55#define __IGNORE_eventfd        /* eventfd2 */
  56#define __IGNORE_signalfd       /* signalfd4 */
  57
  58/* MMU */
  59#ifndef CONFIG_MMU
  60#define __IGNORE_madvise
  61#define __IGNORE_mbind
  62#define __IGNORE_mincore
  63#define __IGNORE_mlock
  64#define __IGNORE_mlockall
  65#define __IGNORE_munlock
  66#define __IGNORE_munlockall
  67#define __IGNORE_mprotect
  68#define __IGNORE_msync
  69#define __IGNORE_migrate_pages
  70#define __IGNORE_move_pages
  71#define __IGNORE_remap_file_pages
  72#define __IGNORE_get_mempolicy
  73#define __IGNORE_set_mempolicy
  74#define __IGNORE_swapoff
  75#define __IGNORE_swapon
  76#endif
  77
  78/* System calls for 32-bit kernels only */
  79#if BITS_PER_LONG == 64
  80#define __IGNORE_sendfile64
  81#define __IGNORE_ftruncate64
  82#define __IGNORE_truncate64
  83#define __IGNORE_stat64
  84#define __IGNORE_lstat64
  85#define __IGNORE_fstat64
  86#define __IGNORE_fcntl64
  87#define __IGNORE_fadvise64_64
  88#define __IGNORE_fstatat64
  89#define __IGNORE_fstatfs64
  90#define __IGNORE_statfs64
  91#define __IGNORE_llseek
  92#define __IGNORE_mmap2
  93#define __IGNORE_clock_gettime64
  94#define __IGNORE_clock_settime64
  95#define __IGNORE_clock_adjtime64
  96#define __IGNORE_clock_getres_time64
  97#define __IGNORE_clock_nanosleep_time64
  98#define __IGNORE_timer_gettime64
  99#define __IGNORE_timer_settime64
 100#define __IGNORE_timerfd_gettime64
 101#define __IGNORE_timerfd_settime64
 102#define __IGNORE_utimensat_time64
 103#define __IGNORE_pselect6_time64
 104#define __IGNORE_ppoll_time64
 105#define __IGNORE_io_pgetevents_time64
 106#define __IGNORE_recvmmsg_time64
 107#define __IGNORE_mq_timedsend_time64
 108#define __IGNORE_mq_timedreceive_time64
 109#define __IGNORE_semtimedop_time64
 110#define __IGNORE_rt_sigtimedwait_time64
 111#define __IGNORE_futex_time64
 112#define __IGNORE_sched_rr_get_interval_time64
 113#else
 114#define __IGNORE_sendfile
 115#define __IGNORE_ftruncate
 116#define __IGNORE_truncate
 117#define __IGNORE_stat
 118#define __IGNORE_lstat
 119#define __IGNORE_fstat
 120#define __IGNORE_fcntl
 121#define __IGNORE_fadvise64
 122#define __IGNORE_newfstatat
 123#define __IGNORE_fstatfs
 124#define __IGNORE_statfs
 125#define __IGNORE_lseek
 126#define __IGNORE_mmap
 127#define __IGNORE_clock_gettime
 128#define __IGNORE_clock_settime
 129#define __IGNORE_clock_adjtime
 130#define __IGNORE_clock_getres
 131#define __IGNORE_clock_nanosleep
 132#define __IGNORE_timer_gettime
 133#define __IGNORE_timer_settime
 134#define __IGNORE_timerfd_gettime
 135#define __IGNORE_timerfd_settime
 136#define __IGNORE_utimensat
 137#define __IGNORE_pselect6
 138#define __IGNORE_ppoll
 139#define __IGNORE_io_pgetevents
 140#define __IGNORE_recvmmsg
 141#define __IGNORE_mq_timedsend
 142#define __IGNORE_mq_timedreceive
 143#define __IGNORE_semtimedop
 144#define __IGNORE_rt_sigtimedwait
 145#define __IGNORE_futex
 146#define __IGNORE_sched_rr_get_interval
 147#define __IGNORE_gettimeofday
 148#define __IGNORE_settimeofday
 149#define __IGNORE_wait4
 150#define __IGNORE_adjtimex
 151#define __IGNORE_nanosleep
 152#define __IGNORE_io_getevents
 153#define __IGNORE_recvmmsg
 154#endif
 155
 156/* i386-specific or historical system calls */
 157#define __IGNORE_break
 158#define __IGNORE_stty
 159#define __IGNORE_gtty
 160#define __IGNORE_ftime
 161#define __IGNORE_prof
 162#define __IGNORE_lock
 163#define __IGNORE_mpx
 164#define __IGNORE_ulimit
 165#define __IGNORE_profil
 166#define __IGNORE_ioperm
 167#define __IGNORE_iopl
 168#define __IGNORE_idle
 169#define __IGNORE_modify_ldt
 170#define __IGNORE_ugetrlimit
 171#define __IGNORE_vm86
 172#define __IGNORE_vm86old
 173#define __IGNORE_set_thread_area
 174#define __IGNORE_get_thread_area
 175#define __IGNORE_madvise1
 176#define __IGNORE_oldstat
 177#define __IGNORE_oldfstat
 178#define __IGNORE_oldlstat
 179#define __IGNORE_oldolduname
 180#define __IGNORE_olduname
 181#define __IGNORE_umount
 182#define __IGNORE_waitpid
 183#define __IGNORE_stime
 184#define __IGNORE_nice
 185#define __IGNORE_signal
 186#define __IGNORE_sigaction
 187#define __IGNORE_sgetmask
 188#define __IGNORE_sigsuspend
 189#define __IGNORE_sigpending
 190#define __IGNORE_ssetmask
 191#define __IGNORE_readdir
 192#define __IGNORE_socketcall
 193#define __IGNORE_ipc
 194#define __IGNORE_sigreturn
 195#define __IGNORE_sigprocmask
 196#define __IGNORE_bdflush
 197#define __IGNORE__llseek
 198#define __IGNORE__newselect
 199#define __IGNORE_create_module
 200#define __IGNORE_query_module
 201#define __IGNORE_get_kernel_syms
 202#define __IGNORE_sysfs
 203#define __IGNORE_uselib
 204#define __IGNORE__sysctl
 205#define __IGNORE_arch_prctl
 206#define __IGNORE_nfsservctl
 207
 208/* ... including the "new" 32-bit uid syscalls */
 209#define __IGNORE_lchown32
 210#define __IGNORE_getuid32
 211#define __IGNORE_getgid32
 212#define __IGNORE_geteuid32
 213#define __IGNORE_getegid32
 214#define __IGNORE_setreuid32
 215#define __IGNORE_setregid32
 216#define __IGNORE_getgroups32
 217#define __IGNORE_setgroups32
 218#define __IGNORE_fchown32
 219#define __IGNORE_setresuid32
 220#define __IGNORE_getresuid32
 221#define __IGNORE_setresgid32
 222#define __IGNORE_getresgid32
 223#define __IGNORE_chown32
 224#define __IGNORE_setuid32
 225#define __IGNORE_setgid32
 226#define __IGNORE_setfsuid32
 227#define __IGNORE_setfsgid32
 228
 229/* these can be expressed using other calls */
 230#define __IGNORE_alarm          /* setitimer */
 231#define __IGNORE_creat          /* open */
 232#define __IGNORE_fork           /* clone */
 233#define __IGNORE_futimesat      /* utimensat */
 234#define __IGNORE_getpgrp        /* getpgid */
 235#define __IGNORE_getdents       /* getdents64 */
 236#define __IGNORE_pause          /* sigsuspend */
 237#define __IGNORE_poll           /* ppoll */
 238#define __IGNORE_select         /* pselect6 */
 239#define __IGNORE_epoll_wait     /* epoll_pwait */
 240#define __IGNORE_time           /* gettimeofday */
 241#define __IGNORE_uname          /* newuname */
 242#define __IGNORE_ustat          /* statfs */
 243#define __IGNORE_utime          /* utimes */
 244#define __IGNORE_vfork          /* clone */
 245
 246/* sync_file_range had a stupid ABI. Allow sync_file_range2 instead */
 247#ifdef __NR_sync_file_range2
 248#define __IGNORE_sync_file_range
 249#endif
 250
 251/* Unmerged syscalls for AFS, STREAMS, etc. */
 252#define __IGNORE_afs_syscall
 253#define __IGNORE_getpmsg
 254#define __IGNORE_putpmsg
 255#define __IGNORE_vserver
 256EOF
 257}
 258
 259syscall_list() {
 260    grep '^[0-9]' "$1" | sort -n |
 261        while read nr abi name entry ; do
 262                echo "#if !defined(__NR_${name}) && !defined(__IGNORE_${name})"
 263                echo "#warning syscall ${name} not implemented"
 264                echo "#endif"
 265        done
 266}
 267
 268(ignore_list && syscall_list $(dirname $0)/../arch/x86/entry/syscalls/syscall_32.tbl) | \
 269$* -E -x c - > /dev/null
 270