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

   1 #ifndef _INTERNAL_SYSCALL_H
   2 #define _INTERNAL_SYSCALL_H
   3
   4 #if defined(__PIC__) && (100*__GNUC__+__GNUC_MINOR__ >= 303)
   5 __attribute__((visibility("protected")))
   6 #endif
   7 long __syscall_ret(unsigned long), __syscall(long, ...),
   8         __syscall_cp(long, long, long, long, long, long, long);
   9
  10 #include <sys/syscall.h>
  11 #include "syscall_arch.h"
  12
  13 #define __syscall1(n,a) __syscall1(n,(long)(a))
  14 #define __syscall2(n,a,b) __syscall2(n,(long)(a),(long)(b))
  15 #define __syscall3(n,a,b,c) __syscall3(n,(long)(a),(long)(b),(long)(c))
  16 #define __syscall4(n,a,b,c,d) __syscall4(n,(long)(a),(long)(b),(long)(c),(long)(d))
  17 #define __syscall5(n,a,b,c,d,e) __syscall5(n,(long)(a),(long)(b),(long)(c),(long)(d),(long)(e))
  18 #define __syscall6(n,a,b,c,d,e,f) __syscall6(n,(long)(a),(long)(b),(long)(c),(long)(d),(long)(e),(long)(f))
  19 #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)
  20
  21 #define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n
  22 #define __SYSCALL_NARGS(...) __SYSCALL_NARGS_X(__VA_ARGS__,7,6,5,4,3,2,1,0,)
  23 #define __SYSCALL_CONCAT_X(a,b) a##b
  24 #define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X(a,b)
  25 #define __SYSCALL_DISP(b,...) __SYSCALL_CONCAT(b,__SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
  26
  27 #define __syscall(...) __SYSCALL_DISP(__syscall,__VA_ARGS__)
  28 #define syscall(...) __syscall_ret(__syscall(__VA_ARGS__))
  29
  30 #define socketcall __socketcall
  31 #define socketcall_cp __socketcall_cp
  32
  33 #define __syscall_cp0(n) (__syscall_cp)(n,0,0,0,0,0,0)
  34 #define __syscall_cp1(n,a) (__syscall_cp)(n,(long)(a),0,0,0,0,0)
  35 #define __syscall_cp2(n,a,b) (__syscall_cp)(n,(long)(a),(long)(b),0,0,0,0)
  36 #define __syscall_cp3(n,a,b,c) (__syscall_cp)(n,(long)(a),(long)(b),(long)(c),0,0,0)
  37 #define __syscall_cp4(n,a,b,c,d) (__syscall_cp)(n,(long)(a),(long)(b),(long)(c),(long)(d),0,0)
  38 #define __syscall_cp5(n,a,b,c,d,e) (__syscall_cp)(n,(long)(a),(long)(b),(long)(c),(long)(d),(long)(e),0)
  39 #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))
  40
  41 #define __syscall_cp(...) __SYSCALL_DISP(__syscall_cp,__VA_ARGS__)
  42 #define syscall_cp(...) __syscall_ret(__syscall_cp(__VA_ARGS__))
  43
  44 #ifdef SYS_socket
  45 #define __socketcall(nm,a,b,c,d,e,f) syscall(SYS_##nm, a, b, c, d, e, f)
  46 #define __socketcall_cp(nm,a,b,c,d,e,f) syscall_cp(SYS_##nm, a, b, c, d, e, f)
  47 #else
  48 #define __socketcall(nm,a,b,c,d,e,f) syscall(SYS_socketcall, __SC_##nm, \
  49     ((long [6]){ (long)a, (long)b, (long)c, (long)d, (long)e, (long)f }))
  50 #define __socketcall_cp(nm,a,b,c,d,e,f) syscall_cp(SYS_socketcall, __SC_##nm, \
  51     ((long [6]){ (long)a, (long)b, (long)c, (long)d, (long)e, (long)f }))
  52 #endif
  53
  54 /* fixup legacy 16-bit junk */
  55
  56 #ifdef SYS_getuid32
  57 #undef SYS_lchown
  58 #undef SYS_getuid
  59 #undef SYS_getgid
  60 #undef SYS_geteuid
  61 #undef SYS_getegid
  62 #undef SYS_setreuid
  63 #undef SYS_setregid
  64 #undef SYS_getgroups
  65 #undef SYS_setgroups
  66 #undef SYS_fchown
  67 #undef SYS_setresuid
  68 #undef SYS_getresuid
  69 #undef SYS_setresgid
  70 #undef SYS_getresgid
  71 #undef SYS_chown
  72 #undef SYS_setuid
  73 #undef SYS_setgid
  74 #undef SYS_setfsuid
  75 #undef SYS_setfsgid
  76 #define SYS_lchown SYS_lchown32
  77 #define SYS_getuid SYS_getuid32
  78 #define SYS_getgid SYS_getgid32
  79 #define SYS_geteuid SYS_geteuid32
  80 #define SYS_getegid SYS_getegid32
  81 #define SYS_setreuid SYS_setreuid32
  82 #define SYS_setregid SYS_setregid32
  83 #define SYS_getgroups SYS_getgroups32
  84 #define SYS_setgroups SYS_setgroups32
  85 #define SYS_fchown SYS_fchown32
  86 #define SYS_setresuid SYS_setresuid32
  87 #define SYS_getresuid SYS_getresuid32
  88 #define SYS_setresgid SYS_setresgid32
  89 #define SYS_getresgid SYS_getresgid32
  90 #define SYS_chown SYS_chown32
  91 #define SYS_setuid SYS_setuid32
  92 #define SYS_setgid SYS_setgid32
  93 #define SYS_setfsuid SYS_setfsuid32
  94 #define SYS_setfsgid SYS_setfsgid32
  95 #endif
  96
  97
  98 /* fixup legacy 32-bit-vs-lfs64 junk */
  99
 100 #ifdef SYS_fcntl64
 101 #undef SYS_fcntl
 102 #define SYS_fcntl SYS_fcntl64
 103 #endif
 104
 105 #ifdef SYS_getdents64
 106 #undef SYS_getdents
 107 #define SYS_getdents SYS_getdents64
 108 #endif
 109
 110 #ifdef SYS_ftruncate64
 111 #undef SYS_ftruncate
 112 #undef SYS_truncate
 113 #define SYS_ftruncate SYS_ftruncate64
 114 #define SYS_truncate SYS_truncate64
 115 #endif
 116
 117 #ifdef SYS_stat64
 118 #undef SYS_stat
 119 #undef SYS_fstat
 120 #undef SYS_lstat
 121 #undef SYS_statfs
 122 #undef SYS_fstatfs
 123 #define SYS_stat SYS_stat64
 124 #define SYS_fstat SYS_fstat64
 125 #define SYS_lstat SYS_lstat64
 126 #define SYS_statfs SYS_statfs64
 127 #define SYS_fstatfs SYS_fstatfs64
 128 #endif
 129
 130 #if defined(SYS_newfstatat)
 131 #undef SYS_fstatat
 132 #define SYS_fstatat SYS_newfstatat
 133 #elif defined(SYS_fstatat64)
 134 #undef SYS_fstatat
 135 #define SYS_fstatat SYS_fstatat64
 136 #endif
 137
 138 #ifdef SYS_ugetrlimit
 139 #undef SYS_getrlimit
 140 #define SYS_getrlimit SYS_ugetrlimit
 141 #endif
 142
 143 #ifdef SYS__newselect
 144 #undef SYS_select
 145 #define SYS_select SYS__newselect
 146 #endif
 147
 148 #ifdef SYS_pread64
 149 #undef SYS_pread
 150 #undef SYS_pwrite
 151 #define SYS_pread SYS_pread64
 152 #define SYS_pwrite SYS_pwrite64
 153 #endif
 154
 155 #ifdef SYS_fadvise64_64
 156 #undef SYS_fadvise
 157 #define SYS_fadvise SYS_fadvise64_64
 158 #endif
 159
 160 #endif