nsz Git - musl/blob - src/internal/syscall.h

   1 #ifndef _INTERNAL_SYSCALL_H
   2 #define _INTERNAL_SYSCALL_H
   3
   4 long __syscall_ret(unsigned long);
   5 long __syscall(long, ...);
   6 long __syscall_cp(long, long, long, long, long, long, long);
   7
   8 #include <sys/syscall.h>
   9 #include "syscall_arch.h"
  10
  11 #define __syscall1(n,a) __syscall1(n,(long)(a))
  12 #define __syscall2(n,a,b) __syscall2(n,(long)(a),(long)(b))
  13 #define __syscall3(n,a,b,c) __syscall3(n,(long)(a),(long)(b),(long)(c))
  14 #define __syscall4(n,a,b,c,d) __syscall4(n,(long)(a),(long)(b),(long)(c),(long)(d))
  15 #define __syscall5(n,a,b,c,d,e) __syscall5(n,(long)(a),(long)(b),(long)(c),(long)(d),(long)(e))
  16 #define __syscall6(n,a,b,c,d,e,f) __syscall6(n,(long)(a),(long)(b),(long)(c),(long)(d),(long)(e),(long)(f))
  17 #define __syscall7(n,a,b,c,d,e,f,g) (__syscall)(n,(long)(a),(long)(b),(long)(c),(long)(d),(long)(e),(long)(f),(long)g)
  18
  19 #define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n
  20 #define __SYSCALL_NARGS(...) __SYSCALL_NARGS_X(__VA_ARGS__,7,6,5,4,3,2,1,0)
  21 #define __SYSCALL_CONCAT_X(a,b) a##b
  22 #define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X(a,b)
  23 #define __SYSCALL_DISP(b,...) __SYSCALL_CONCAT(b,__SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
  24
  25 #define __syscall(...) __SYSCALL_DISP(__syscall,__VA_ARGS__)
  26 #define syscall(...) __syscall_ret(__syscall(__VA_ARGS__))
  27
  28 #define socketcall __socketcall
  29 #define socketcall_cp __socketcall_cp
  30
  31 #define __syscall_cp0(n) (__syscall_cp)(n,0,0,0,0,0,0)
  32 #define __syscall_cp1(n,a) (__syscall_cp)(n,(long)(a),0,0,0,0,0)
  33 #define __syscall_cp2(n,a,b) (__syscall_cp)(n,(long)(a),(long)(b),0,0,0,0)
  34 #define __syscall_cp3(n,a,b,c) (__syscall_cp)(n,(long)(a),(long)(b),(long)(c),0,0,0)
  35 #define __syscall_cp4(n,a,b,c,d) (__syscall_cp)(n,(long)(a),(long)(b),(long)(c),(long)(d),0,0)
  36 #define __syscall_cp5(n,a,b,c,d,e) (__syscall_cp)(n,(long)(a),(long)(b),(long)(c),(long)(d),(long)(e),0)
  37 #define __syscall_cp6(n,a,b,c,d,e,f) (__syscall_cp)(n,(long)(a),(long)(b),(long)(c),(long)(d),(long)(e),(long)(f))
  38
  39 #define __syscall_cp(...) __SYSCALL_DISP(__syscall_cp,__VA_ARGS__)
  40 #define syscall_cp(...) __syscall_ret(__syscall_cp(__VA_ARGS__))
  41
  42 #ifdef SYS_socket
  43 #define __socketcall(nm,a,b,c,d,e,f) syscall(SYS_##nm, a, b, c, d, e, f)
  44 #define __socketcall_cp(nm,a,b,c,d,e,f) syscall_cp(SYS_##nm, a, b, c, d, e, f)
  45 #else
  46 #define __socketcall(nm,a,b,c,d,e,f) syscall(SYS_socketcall, __SC_##nm, \
  47     ((long [6]){ (long)a, (long)b, (long)c, (long)d, (long)e, (long)f }))
  48 #define __socketcall_cp(nm,a,b,c,d,e,f) syscall_cp(SYS_socketcall, __SC_##nm, \
  49     ((long [6]){ (long)a, (long)b, (long)c, (long)d, (long)e, (long)f }))
  50 #endif
  51
  52 /* fixup legacy 16-bit junk */
  53
  54 #ifdef SYS_getuid32
  55 #undef SYS_lchown
  56 #undef SYS_getuid
  57 #undef SYS_getgid
  58 #undef SYS_geteuid
  59 #undef SYS_getegid
  60 #undef SYS_setreuid
  61 #undef SYS_setregid
  62 #undef SYS_getgroups
  63 #undef SYS_setgroups
  64 #undef SYS_fchown
  65 #undef SYS_setresuid
  66 #undef SYS_getresuid
  67 #undef SYS_setresgid
  68 #undef SYS_getresgid
  69 #undef SYS_chown
  70 #undef SYS_setuid
  71 #undef SYS_setgid
  72 #undef SYS_setfsuid
  73 #undef SYS_setfsgid
  74 #define SYS_lchown SYS_lchown32
  75 #define SYS_getuid SYS_getuid32
  76 #define SYS_getgid SYS_getgid32
  77 #define SYS_geteuid SYS_geteuid32
  78 #define SYS_getegid SYS_getegid32
  79 #define SYS_setreuid SYS_setreuid32
  80 #define SYS_setregid SYS_setregid32
  81 #define SYS_getgroups SYS_getgroups32
  82 #define SYS_setgroups SYS_setgroups32
  83 #define SYS_fchown SYS_fchown32
  84 #define SYS_setresuid SYS_setresuid32
  85 #define SYS_getresuid SYS_getresuid32
  86 #define SYS_setresgid SYS_setresgid32
  87 #define SYS_getresgid SYS_getresgid32
  88 #define SYS_chown SYS_chown32
  89 #define SYS_setuid SYS_setuid32
  90 #define SYS_setgid SYS_setgid32
  91 #define SYS_setfsuid SYS_setfsuid32
  92 #define SYS_setfsgid SYS_setfsgid32
  93 #endif
  94
  95
  96 /* fixup legacy 32-bit-vs-lfs64 junk */
  97
  98 #ifdef SYS_fcntl64
  99 #undef SYS_fcntl
 100 #define SYS_fcntl SYS_fcntl64
 101 #endif
 102
 103 #ifdef SYS_getdents64
 104 #undef SYS_getdents
 105 #define SYS_getdents SYS_getdents64
 106 #endif
 107
 108 #ifdef SYS_ftruncate64
 109 #undef SYS_ftruncate
 110 #undef SYS_truncate
 111 #define SYS_ftruncate SYS_ftruncate64
 112 #define SYS_truncate SYS_truncate64
 113 #endif
 114
 115 #ifdef SYS_stat64
 116 #undef SYS_stat
 117 #undef SYS_fstat
 118 #undef SYS_lstat
 119 #undef SYS_statfs
 120 #undef SYS_fstatfs
 121 #define SYS_stat SYS_stat64
 122 #define SYS_fstat SYS_fstat64
 123 #define SYS_lstat SYS_lstat64
 124 #define SYS_statfs SYS_statfs64
 125 #define SYS_fstatfs SYS_fstatfs64
 126 #endif
 127
 128 #if defined(SYS_newfstatat)
 129 #undef SYS_fstatat
 130 #define SYS_fstatat SYS_newfstatat
 131 #elif defined(SYS_fstatat64)
 132 #undef SYS_fstatat
 133 #define SYS_fstatat SYS_fstatat64
 134 #endif
 135
 136 #ifdef SYS_ugetrlimit
 137 #undef SYS_getrlimit
 138 #define SYS_getrlimit SYS_ugetrlimit
 139 #endif
 140
 141 #ifdef SYS__newselect
 142 #undef SYS_select
 143 #define SYS_select SYS__newselect
 144 #endif
 145
 146 #ifdef SYS_pread64
 147 #undef SYS_pread
 148 #undef SYS_pwrite
 149 #define SYS_pread SYS_pread64
 150 #define SYS_pwrite SYS_pwrite64
 151 #endif
 152
 153 #ifdef SYS_fadvise64_64
 154 #undef SYS_fadvise
 155 #define SYS_fadvise SYS_fadvise64_64
 156 #endif
 157
 158 #endif