syscall.h (11481B)
1 #ifndef _INTERNAL_SYSCALL_H 2 #define _INTERNAL_SYSCALL_H 3 4 #include <features.h> 5 #include <errno.h> 6 #include <sys/syscall.h> 7 #include "syscall_arch.h" 8 9 #ifndef SYSCALL_RLIM_INFINITY 10 #define SYSCALL_RLIM_INFINITY (~0ULL) 11 #endif 12 13 #ifndef SYSCALL_MMAP2_UNIT 14 #define SYSCALL_MMAP2_UNIT 4096ULL 15 #endif 16 17 #ifndef __SYSCALL_LL_PRW 18 #define __SYSCALL_LL_PRW(x) __SYSCALL_LL_O(x) 19 #endif 20 21 #ifndef __scc 22 #define __scc(X) ((long) (X)) 23 typedef long syscall_arg_t; 24 #endif 25 26 hidden long __syscall_ret(unsigned long), 27 __syscall_cp(syscall_arg_t, syscall_arg_t, syscall_arg_t, syscall_arg_t, 28 syscall_arg_t, syscall_arg_t, syscall_arg_t); 29 30 #define __syscall1(n,a) __syscall1(n,__scc(a)) 31 #define __syscall2(n,a,b) __syscall2(n,__scc(a),__scc(b)) 32 #define __syscall3(n,a,b,c) __syscall3(n,__scc(a),__scc(b),__scc(c)) 33 #define __syscall4(n,a,b,c,d) __syscall4(n,__scc(a),__scc(b),__scc(c),__scc(d)) 34 #define __syscall5(n,a,b,c,d,e) __syscall5(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e)) 35 #define __syscall6(n,a,b,c,d,e,f) __syscall6(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f)) 36 #define __syscall7(n,a,b,c,d,e,f,g) __syscall7(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f),__scc(g)) 37 38 #define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n 39 #define __SYSCALL_NARGS(...) __SYSCALL_NARGS_X(__VA_ARGS__,7,6,5,4,3,2,1,0,) 40 #define __SYSCALL_CONCAT_X(a,b) a##b 41 #define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X(a,b) 42 #define __SYSCALL_DISP(b,...) __SYSCALL_CONCAT(b,__SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__) 43 44 #define __syscall(...) __SYSCALL_DISP(__syscall,__VA_ARGS__) 45 #define syscall(...) __syscall_ret(__syscall(__VA_ARGS__)) 46 47 #define socketcall(nm,a,b,c,d,e,f) __syscall_ret(__socketcall(nm,a,b,c,d,e,f)) 48 #define socketcall_cp(nm,a,b,c,d,e,f) __syscall_ret(__socketcall_cp(nm,a,b,c,d,e,f)) 49 50 #define __syscall_cp0(n) (__syscall_cp)(n,0,0,0,0,0,0) 51 #define __syscall_cp1(n,a) (__syscall_cp)(n,__scc(a),0,0,0,0,0) 52 #define __syscall_cp2(n,a,b) (__syscall_cp)(n,__scc(a),__scc(b),0,0,0,0) 53 #define __syscall_cp3(n,a,b,c) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),0,0,0) 54 #define __syscall_cp4(n,a,b,c,d) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),__scc(d),0,0) 55 #define __syscall_cp5(n,a,b,c,d,e) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),0) 56 #define __syscall_cp6(n,a,b,c,d,e,f) (__syscall_cp)(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f)) 57 58 #define __syscall_cp(...) __SYSCALL_DISP(__syscall_cp,__VA_ARGS__) 59 #define syscall_cp(...) __syscall_ret(__syscall_cp(__VA_ARGS__)) 60 61 static inline long __alt_socketcall(int sys, int sock, int cp, syscall_arg_t a, syscall_arg_t b, syscall_arg_t c, syscall_arg_t d, syscall_arg_t e, syscall_arg_t f) 62 { 63 long r; 64 if (cp) r = __syscall_cp(sys, a, b, c, d, e, f); 65 else r = __syscall(sys, a, b, c, d, e, f); 66 if (r != -ENOSYS) return r; 67 #ifdef SYS_socketcall 68 if (cp) r = __syscall_cp(SYS_socketcall, sock, ((long[6]){a, b, c, d, e, f})); 69 else r = __syscall(SYS_socketcall, sock, ((long[6]){a, b, c, d, e, f})); 70 #endif 71 return r; 72 } 73 #define __socketcall(nm, a, b, c, d, e, f) __alt_socketcall(SYS_##nm, __SC_##nm, 0, \ 74 __scc(a), __scc(b), __scc(c), __scc(d), __scc(e), __scc(f)) 75 #define __socketcall_cp(nm, a, b, c, d, e, f) __alt_socketcall(SYS_##nm, __SC_##nm, 1, \ 76 __scc(a), __scc(b), __scc(c), __scc(d), __scc(e), __scc(f)) 77 78 /* fixup legacy 16-bit junk */ 79 80 #ifdef SYS_getuid32 81 #undef SYS_lchown 82 #undef SYS_getuid 83 #undef SYS_getgid 84 #undef SYS_geteuid 85 #undef SYS_getegid 86 #undef SYS_setreuid 87 #undef SYS_setregid 88 #undef SYS_getgroups 89 #undef SYS_setgroups 90 #undef SYS_fchown 91 #undef SYS_setresuid 92 #undef SYS_getresuid 93 #undef SYS_setresgid 94 #undef SYS_getresgid 95 #undef SYS_chown 96 #undef SYS_setuid 97 #undef SYS_setgid 98 #undef SYS_setfsuid 99 #undef SYS_setfsgid 100 #define SYS_lchown SYS_lchown32 101 #define SYS_getuid SYS_getuid32 102 #define SYS_getgid SYS_getgid32 103 #define SYS_geteuid SYS_geteuid32 104 #define SYS_getegid SYS_getegid32 105 #define SYS_setreuid SYS_setreuid32 106 #define SYS_setregid SYS_setregid32 107 #define SYS_getgroups SYS_getgroups32 108 #define SYS_setgroups SYS_setgroups32 109 #define SYS_fchown SYS_fchown32 110 #define SYS_setresuid SYS_setresuid32 111 #define SYS_getresuid SYS_getresuid32 112 #define SYS_setresgid SYS_setresgid32 113 #define SYS_getresgid SYS_getresgid32 114 #define SYS_chown SYS_chown32 115 #define SYS_setuid SYS_setuid32 116 #define SYS_setgid SYS_setgid32 117 #define SYS_setfsuid SYS_setfsuid32 118 #define SYS_setfsgid SYS_setfsgid32 119 #endif 120 121 122 /* fixup legacy 32-bit-vs-lfs64 junk */ 123 124 #ifdef SYS_fcntl64 125 #undef SYS_fcntl 126 #define SYS_fcntl SYS_fcntl64 127 #endif 128 129 #ifdef SYS_getdents64 130 #undef SYS_getdents 131 #define SYS_getdents SYS_getdents64 132 #endif 133 134 #ifdef SYS_ftruncate64 135 #undef SYS_ftruncate 136 #undef SYS_truncate 137 #define SYS_ftruncate SYS_ftruncate64 138 #define SYS_truncate SYS_truncate64 139 #endif 140 141 #ifdef SYS_stat64 142 #undef SYS_stat 143 #define SYS_stat SYS_stat64 144 #endif 145 146 #ifdef SYS_fstat64 147 #undef SYS_fstat 148 #define SYS_fstat SYS_fstat64 149 #endif 150 151 #ifdef SYS_lstat64 152 #undef SYS_lstat 153 #define SYS_lstat SYS_lstat64 154 #endif 155 156 #ifdef SYS_statfs64 157 #undef SYS_statfs 158 #define SYS_statfs SYS_statfs64 159 #endif 160 161 #ifdef SYS_fstatfs64 162 #undef SYS_fstatfs 163 #define SYS_fstatfs SYS_fstatfs64 164 #endif 165 166 #if defined(SYS_newfstatat) 167 #undef SYS_fstatat 168 #define SYS_fstatat SYS_newfstatat 169 #elif defined(SYS_fstatat64) 170 #undef SYS_fstatat 171 #define SYS_fstatat SYS_fstatat64 172 #endif 173 174 #ifdef SYS_ugetrlimit 175 #undef SYS_getrlimit 176 #define SYS_getrlimit SYS_ugetrlimit 177 #endif 178 179 #ifdef SYS__newselect 180 #undef SYS_select 181 #define SYS_select SYS__newselect 182 #endif 183 184 #ifdef SYS_pread64 185 #undef SYS_pread 186 #undef SYS_pwrite 187 #define SYS_pread SYS_pread64 188 #define SYS_pwrite SYS_pwrite64 189 #endif 190 191 #ifdef SYS_fadvise64_64 192 #undef SYS_fadvise 193 #define SYS_fadvise SYS_fadvise64_64 194 #elif defined(SYS_fadvise64) 195 #undef SYS_fadvise 196 #define SYS_fadvise SYS_fadvise64 197 #endif 198 199 #ifdef SYS_sendfile64 200 #undef SYS_sendfile 201 #define SYS_sendfile SYS_sendfile64 202 #endif 203 204 #ifdef SYS_timer_settime32 205 #define SYS_timer_settime SYS_timer_settime32 206 #endif 207 208 #ifdef SYS_timer_gettime32 209 #define SYS_timer_gettime SYS_timer_gettime32 210 #endif 211 212 #ifdef SYS_timerfd_settime32 213 #define SYS_timerfd_settime SYS_timerfd_settime32 214 #endif 215 216 #ifdef SYS_timerfd_gettime32 217 #define SYS_timerfd_gettime SYS_timerfd_gettime32 218 #endif 219 220 #ifdef SYS_clock_settime32 221 #define SYS_clock_settime SYS_clock_settime32 222 #endif 223 224 #ifdef SYS_clock_gettime32 225 #define SYS_clock_gettime SYS_clock_gettime32 226 #endif 227 228 #ifdef SYS_clock_getres_time32 229 #define SYS_clock_getres SYS_clock_getres_time32 230 #endif 231 232 #ifdef SYS_clock_nanosleep_time32 233 #define SYS_clock_nanosleep SYS_clock_nanosleep_time32 234 #endif 235 236 #ifdef SYS_gettimeofday_time32 237 #define SYS_gettimeofday SYS_gettimeofday_time32 238 #endif 239 240 #ifdef SYS_settimeofday_time32 241 #define SYS_settimeofday SYS_settimeofday_time32 242 #endif 243 244 /* Ensure that the plain syscall names are defined even for "time64-only" 245 * archs. These facilitate callers passing null time arguments, and make 246 * tests for establishing which to use/fallback-to more consistent when 247 * they do need to be called with time arguments. */ 248 249 #ifndef SYS_clock_gettime 250 #define SYS_clock_gettime SYS_clock_gettime64 251 #endif 252 253 #ifndef SYS_clock_settime 254 #define SYS_clock_settime SYS_clock_settime64 255 #endif 256 257 #ifndef SYS_clock_adjtime 258 #define SYS_clock_adjtime SYS_clock_adjtime64 259 #endif 260 261 #ifndef SYS_clock_getres 262 #define SYS_clock_getres SYS_clock_getres_time64 263 #endif 264 265 #ifndef SYS_clock_nanosleep 266 #define SYS_clock_nanosleep SYS_clock_nanosleep_time64 267 #endif 268 269 #ifndef SYS_timer_gettime 270 #define SYS_timer_gettime SYS_timer_gettime64 271 #endif 272 273 #ifndef SYS_timer_settime 274 #define SYS_timer_settime SYS_timer_settime64 275 #endif 276 277 #ifndef SYS_timerfd_gettime 278 #define SYS_timerfd_gettime SYS_timerfd_gettime64 279 #endif 280 281 #ifndef SYS_timerfd_settime 282 #define SYS_timerfd_settime SYS_timerfd_settime64 283 #endif 284 285 #ifndef SYS_utimensat 286 #define SYS_utimensat SYS_utimensat_time64 287 #endif 288 289 #ifndef SYS_pselect6 290 #define SYS_pselect6 SYS_pselect6_time64 291 #endif 292 293 #ifndef SYS_ppoll 294 #define SYS_ppoll SYS_ppoll_time64 295 #endif 296 297 #ifndef SYS_recvmmsg 298 #define SYS_recvmmsg SYS_recvmmsg_time64 299 #endif 300 301 #ifndef SYS_mq_timedsend 302 #define SYS_mq_timedsend SYS_mq_timedsend_time64 303 #endif 304 305 #ifndef SYS_mq_timedreceive 306 #define SYS_mq_timedreceive SYS_mq_timedreceive_time64 307 #endif 308 309 /* SYS_semtimedop omitted because SYS_ipc may provide it */ 310 311 #ifndef SYS_rt_sigtimedwait 312 #define SYS_rt_sigtimedwait SYS_rt_sigtimedwait_time64 313 #endif 314 315 #ifndef SYS_futex 316 #define SYS_futex SYS_futex_time64 317 #endif 318 319 #ifndef SYS_sched_rr_get_interval 320 #define SYS_sched_rr_get_interval SYS_sched_rr_get_interval_time64 321 #endif 322 323 324 325 326 /* socketcall calls */ 327 328 #define __SC_socket 1 329 #define __SC_bind 2 330 #define __SC_connect 3 331 #define __SC_listen 4 332 #define __SC_accept 5 333 #define __SC_getsockname 6 334 #define __SC_getpeername 7 335 #define __SC_socketpair 8 336 #define __SC_send 9 337 #define __SC_recv 10 338 #define __SC_sendto 11 339 #define __SC_recvfrom 12 340 #define __SC_shutdown 13 341 #define __SC_setsockopt 14 342 #define __SC_getsockopt 15 343 #define __SC_sendmsg 16 344 #define __SC_recvmsg 17 345 #define __SC_accept4 18 346 #define __SC_recvmmsg 19 347 #define __SC_sendmmsg 20 348 349 /* This is valid only because all socket syscalls are made via 350 * socketcall, which always fills unused argument slots with zeros. */ 351 #ifndef SYS_accept 352 #define SYS_accept SYS_accept4 353 #endif 354 355 #ifndef SO_RCVTIMEO_OLD 356 #define SO_RCVTIMEO_OLD 20 357 #endif 358 #ifndef SO_SNDTIMEO_OLD 359 #define SO_SNDTIMEO_OLD 21 360 #endif 361 362 #define SO_TIMESTAMP_OLD 29 363 #define SO_TIMESTAMPNS_OLD 35 364 #define SO_TIMESTAMPING_OLD 37 365 #define SCM_TIMESTAMP_OLD SO_TIMESTAMP_OLD 366 #define SCM_TIMESTAMPNS_OLD SO_TIMESTAMPNS_OLD 367 #define SCM_TIMESTAMPING_OLD SO_TIMESTAMPING_OLD 368 369 #ifndef SIOCGSTAMP_OLD 370 #define SIOCGSTAMP_OLD 0x8906 371 #endif 372 #ifndef SIOCGSTAMPNS_OLD 373 #define SIOCGSTAMPNS_OLD 0x8907 374 #endif 375 376 #ifdef SYS_open 377 #define __sys_open2(x,pn,fl) __syscall2(SYS_open, pn, (fl)|O_LARGEFILE) 378 #define __sys_open3(x,pn,fl,mo) __syscall3(SYS_open, pn, (fl)|O_LARGEFILE, mo) 379 #define __sys_open_cp2(x,pn,fl) __syscall_cp2(SYS_open, pn, (fl)|O_LARGEFILE) 380 #define __sys_open_cp3(x,pn,fl,mo) __syscall_cp3(SYS_open, pn, (fl)|O_LARGEFILE, mo) 381 #else 382 #define __sys_open2(x,pn,fl) __syscall3(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE) 383 #define __sys_open3(x,pn,fl,mo) __syscall4(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE, mo) 384 #define __sys_open_cp2(x,pn,fl) __syscall_cp3(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE) 385 #define __sys_open_cp3(x,pn,fl,mo) __syscall_cp4(SYS_openat, AT_FDCWD, pn, (fl)|O_LARGEFILE, mo) 386 #endif 387 388 #define __sys_open(...) __SYSCALL_DISP(__sys_open,,__VA_ARGS__) 389 #define sys_open(...) __syscall_ret(__sys_open(__VA_ARGS__)) 390 391 #define __sys_open_cp(...) __SYSCALL_DISP(__sys_open_cp,,__VA_ARGS__) 392 #define sys_open_cp(...) __syscall_ret(__sys_open_cp(__VA_ARGS__)) 393 394 #ifdef SYS_wait4 395 #define __sys_wait4(a,b,c,d) __syscall(SYS_wait4,a,b,c,d) 396 #define __sys_wait4_cp(a,b,c,d) __syscall_cp(SYS_wait4,a,b,c,d) 397 #else 398 hidden long __emulate_wait4(int, int *, int, void *, int); 399 #define __sys_wait4(a,b,c,d) __emulate_wait4(a,b,c,d,0) 400 #define __sys_wait4_cp(a,b,c,d) __emulate_wait4(a,b,c,d,1) 401 #endif 402 403 #define sys_wait4(a,b,c,d) __syscall_ret(__sys_wait4(a,b,c,d)) 404 #define sys_wait4_cp(a,b,c,d) __syscall_ret(__sys_wait4_cp(a,b,c,d)) 405 406 /* tcc-build: stock tcc 0.9.27 does not parse C99 [static N] array 407 parameter syntax. The static qualifier here is a hint to the compiler 408 only; dropping it preserves identical semantics. */ 409 hidden void __procfdname(char __buf[15+3*sizeof(int)], unsigned); 410 411 hidden void *__vdsosym(const char *, const char *); 412 413 #endif