include/asm-s390/unistd.h

   1 /*
   2  *  include/asm-s390/unistd.h
   3  *
   4  *  S390 version
   5  *
   6  *  Derived from "include/asm-i386/unistd.h"
   7  */
   8
   9 #ifndef _ASM_S390_UNISTD_H_
  10 #define _ASM_S390_UNISTD_H_
  11
  12 /*
  13  * This file contains the system call numbers.
  14  */
  15
  16 #define __NR_exit                 1
  17 #define __NR_fork                 2
  18 #define __NR_read                 3
  19 #define __NR_write                4
  20 #define __NR_open                 5
  21 #define __NR_close                6
  22 #define __NR_restart_syscall      7
  23 #define __NR_creat                8
  24 #define __NR_link                 9
  25 #define __NR_unlink              10
  26 #define __NR_execve              11
  27 #define __NR_chdir               12
  28 #define __NR_time                13
  29 #define __NR_mknod               14
  30 #define __NR_chmod               15
  31 #define __NR_lchown              16
  32 #define __NR_lseek               19
  33 #define __NR_getpid              20
  34 #define __NR_mount               21
  35 #define __NR_umount              22
  36 #define __NR_setuid              23
  37 #define __NR_getuid              24
  38 #define __NR_stime               25
  39 #define __NR_ptrace              26
  40 #define __NR_alarm               27
  41 #define __NR_pause               29
  42 #define __NR_utime               30
  43 #define __NR_access              33
  44 #define __NR_nice                34
  45 #define __NR_sync                36
  46 #define __NR_kill                37
  47 #define __NR_rename              38
  48 #define __NR_mkdir               39
  49 #define __NR_rmdir               40
  50 #define __NR_dup                 41
  51 #define __NR_pipe                42
  52 #define __NR_times               43
  53 #define __NR_brk                 45
  54 #define __NR_setgid              46
  55 #define __NR_getgid              47
  56 #define __NR_signal              48
  57 #define __NR_geteuid             49
  58 #define __NR_getegid             50
  59 #define __NR_acct                51
  60 #define __NR_umount2             52
  61 #define __NR_ioctl               54
  62 #define __NR_fcntl               55
  63 #define __NR_setpgid             57
  64 #define __NR_umask               60
  65 #define __NR_chroot              61
  66 #define __NR_ustat               62
  67 #define __NR_dup2                63
  68 #define __NR_getppid             64
  69 #define __NR_getpgrp             65
  70 #define __NR_setsid              66
  71 #define __NR_sigaction           67
  72 #define __NR_setreuid            70
  73 #define __NR_setregid            71
  74 #define __NR_sigsuspend          72
  75 #define __NR_sigpending          73
  76 #define __NR_sethostname         74
  77 #define __NR_setrlimit           75
  78 #define __NR_getrlimit           76
  79 #define __NR_getrusage           77
  80 #define __NR_gettimeofday        78
  81 #define __NR_settimeofday        79
  82 #define __NR_getgroups           80
  83 #define __NR_setgroups           81
  84 #define __NR_symlink             83
  85 #define __NR_readlink            85
  86 #define __NR_uselib              86
  87 #define __NR_swapon              87
  88 #define __NR_reboot              88
  89 #define __NR_readdir             89
  90 #define __NR_mmap                90
  91 #define __NR_munmap              91
  92 #define __NR_truncate            92
  93 #define __NR_ftruncate           93
  94 #define __NR_fchmod              94
  95 #define __NR_fchown              95
  96 #define __NR_getpriority         96
  97 #define __NR_setpriority         97
  98 #define __NR_statfs              99
  99 #define __NR_fstatfs            100
 100 #define __NR_ioperm             101
 101 #define __NR_socketcall         102
 102 #define __NR_syslog             103
 103 #define __NR_setitimer          104
 104 #define __NR_getitimer          105
 105 #define __NR_stat               106
 106 #define __NR_lstat              107
 107 #define __NR_fstat              108
 108 #define __NR_lookup_dcookie     110
 109 #define __NR_vhangup            111
 110 #define __NR_idle               112
 111 #define __NR_wait4              114
 112 #define __NR_swapoff            115
 113 #define __NR_sysinfo            116
 114 #define __NR_ipc                117
 115 #define __NR_fsync              118
 116 #define __NR_sigreturn          119
 117 #define __NR_clone              120
 118 #define __NR_setdomainname      121
 119 #define __NR_uname              122
 120 #define __NR_adjtimex           124
 121 #define __NR_mprotect           125
 122 #define __NR_sigprocmask        126
 123 #define __NR_create_module      127
 124 #define __NR_init_module        128
 125 #define __NR_delete_module      129
 126 #define __NR_get_kernel_syms    130
 127 #define __NR_quotactl           131
 128 #define __NR_getpgid            132
 129 #define __NR_fchdir             133
 130 #define __NR_bdflush            134
 131 #define __NR_sysfs              135
 132 #define __NR_personality        136
 133 #define __NR_afs_syscall        137 /* Syscall for Andrew File System */
 134 #define __NR_setfsuid           138
 135 #define __NR_setfsgid           139
 136 #define __NR__llseek            140
 137 #define __NR_getdents           141
 138 #define __NR__newselect         142
 139 #define __NR_flock              143
 140 #define __NR_msync              144
 141 #define __NR_readv              145
 142 #define __NR_writev             146
 143 #define __NR_getsid             147
 144 #define __NR_fdatasync          148
 145 #define __NR__sysctl            149
 146 #define __NR_mlock              150
 147 #define __NR_munlock            151
 148 #define __NR_mlockall           152
 149 #define __NR_munlockall         153
 150 #define __NR_sched_setparam             154
 151 #define __NR_sched_getparam             155
 152 #define __NR_sched_setscheduler         156
 153 #define __NR_sched_getscheduler         157
 154 #define __NR_sched_yield                158
 155 #define __NR_sched_get_priority_max     159
 156 #define __NR_sched_get_priority_min     160
 157 #define __NR_sched_rr_get_interval      161
 158 #define __NR_nanosleep          162
 159 #define __NR_mremap             163
 160 #define __NR_setresuid          164
 161 #define __NR_getresuid          165
 162 #define __NR_query_module       167
 163 #define __NR_poll               168
 164 #define __NR_nfsservctl         169
 165 #define __NR_setresgid          170
 166 #define __NR_getresgid          171
 167 #define __NR_prctl              172
 168 #define __NR_rt_sigreturn       173
 169 #define __NR_rt_sigaction       174
 170 #define __NR_rt_sigprocmask     175
 171 #define __NR_rt_sigpending      176
 172 #define __NR_rt_sigtimedwait    177
 173 #define __NR_rt_sigqueueinfo    178
 174 #define __NR_rt_sigsuspend      179
 175 #define __NR_pread64            180
 176 #define __NR_pwrite64           181
 177 #define __NR_chown              182
 178 #define __NR_getcwd             183
 179 #define __NR_capget             184
 180 #define __NR_capset             185
 181 #define __NR_sigaltstack        186
 182 #define __NR_sendfile           187
 183 #define __NR_getpmsg            188
 184 #define __NR_putpmsg            189
 185 #define __NR_vfork              190
 186 #define __NR_ugetrlimit         191     /* SuS compliant getrlimit */
 187 #define __NR_mmap2              192
 188 #define __NR_truncate64         193
 189 #define __NR_ftruncate64        194
 190 #define __NR_stat64             195
 191 #define __NR_lstat64            196
 192 #define __NR_fstat64            197
 193 #define __NR_lchown32           198
 194 #define __NR_getuid32           199
 195 #define __NR_getgid32           200
 196 #define __NR_geteuid32          201
 197 #define __NR_getegid32          202
 198 #define __NR_setreuid32         203
 199 #define __NR_setregid32         204
 200 #define __NR_getgroups32        205
 201 #define __NR_setgroups32        206
 202 #define __NR_fchown32           207
 203 #define __NR_setresuid32        208
 204 #define __NR_getresuid32        209
 205 #define __NR_setresgid32        210
 206 #define __NR_getresgid32        211
 207 #define __NR_chown32            212
 208 #define __NR_setuid32           213
 209 #define __NR_setgid32           214
 210 #define __NR_setfsuid32         215
 211 #define __NR_setfsgid32         216
 212 #define __NR_pivot_root         217
 213 #define __NR_mincore            218
 214 #define __NR_madvise            219
 215 #define __NR_getdents64         220
 216 #define __NR_fcntl64            221
 217 #define __NR_readahead          222
 218 #define __NR_sendfile64         223
 219 #define __NR_setxattr           224
 220 #define __NR_lsetxattr          225
 221 #define __NR_fsetxattr          226
 222 #define __NR_getxattr           227
 223 #define __NR_lgetxattr          228
 224 #define __NR_fgetxattr          229
 225 #define __NR_listxattr          230
 226 #define __NR_llistxattr         231
 227 #define __NR_flistxattr         232
 228 #define __NR_removexattr        233
 229 #define __NR_lremovexattr       234
 230 #define __NR_fremovexattr       235
 231 #define __NR_gettid             236
 232 #define __NR_tkill              237
 233 #define __NR_futex              238
 234 #define __NR_sched_setaffinity  239
 235 #define __NR_sched_getaffinity  240
 236 #define __NR_tgkill             241
 237 /* Number 242 is reserved for tux */
 238 #define __NR_io_setup           243
 239 #define __NR_io_destroy         244
 240 #define __NR_io_getevents       245
 241 #define __NR_io_submit          246
 242 #define __NR_io_cancel          247
 243 #define __NR_exit_group         248
 244 #define __NR_epoll_create       249
 245 #define __NR_epoll_ctl          250
 246 #define __NR_epoll_wait         251
 247 #define __NR_set_tid_address    252
 248 #define __NR_fadvise64          253
 249 #define __NR_timer_create       254
 250 #define __NR_timer_settime      (__NR_timer_create+1)
 251 #define __NR_timer_gettime      (__NR_timer_create+2)
 252 #define __NR_timer_getoverrun   (__NR_timer_create+3)
 253 #define __NR_timer_delete       (__NR_timer_create+4)
 254 #define __NR_clock_settime      (__NR_timer_create+5)
 255 #define __NR_clock_gettime      (__NR_timer_create+6)
 256 #define __NR_clock_getres       (__NR_timer_create+7)
 257 #define __NR_clock_nanosleep    (__NR_timer_create+8)
 258 /* Number 263 is reserved for vserver */
 259 #define __NR_fadvise64_64       264
 260 #define __NR_statfs64           265
 261 #define __NR_fstatfs64          266
 262 #define __NR_remap_file_pages   267
 263 /* Number 268 is reserved for new sys_mbind */
 264 /* Number 269 is reserved for new sys_get_mempolicy */
 265 /* Number 270 is reserved for new sys_set_mempolicy */
 266 #define __NR_mq_open            271
 267 #define __NR_mq_unlink          272
 268 #define __NR_mq_timedsend       273
 269 #define __NR_mq_timedreceive    274
 270 #define __NR_mq_notify          275
 271 #define __NR_mq_getsetattr      276
 272 #define __NR_kexec_load         277
 273 #define __NR_add_key            278
 274 #define __NR_request_key        279
 275 #define __NR_keyctl             280
 276 #define __NR_waitid             281
 277 #define __NR_ioprio_set         282
 278 #define __NR_ioprio_get         283
 279 #define __NR_inotify_init       284
 280 #define __NR_inotify_add_watch  285
 281 #define __NR_inotify_rm_watch   286
 282
 283 #define NR_syscalls 287
 284
 285 /*
 286  * There are some system calls that are not present on 64 bit, some
 287  * have a different name although they do the same (e.g. __NR_chown32
 288  * is __NR_chown on 64 bit).
 289  */
 290 #ifdef __s390x__
 291 #undef  __NR_time
 292 #undef  __NR_lchown
 293 #undef  __NR_setuid
 294 #undef  __NR_getuid
 295 #undef  __NR_stime
 296 #undef  __NR_setgid
 297 #undef  __NR_getgid
 298 #undef  __NR_geteuid
 299 #undef  __NR_getegid
 300 #undef  __NR_setreuid
 301 #undef  __NR_setregid
 302 #undef  __NR_getrlimit
 303 #undef  __NR_getgroups
 304 #undef  __NR_setgroups
 305 #undef  __NR_fchown
 306 #undef  __NR_ioperm
 307 #undef  __NR_setfsuid
 308 #undef  __NR_setfsgid
 309 #undef  __NR__llseek
 310 #undef  __NR__newselect
 311 #undef  __NR_setresuid
 312 #undef  __NR_getresuid
 313 #undef  __NR_setresgid
 314 #undef  __NR_getresgid
 315 #undef  __NR_chown
 316 #undef  __NR_ugetrlimit
 317 #undef  __NR_mmap2
 318 #undef  __NR_truncate64
 319 #undef  __NR_ftruncate64
 320 #undef  __NR_stat64
 321 #undef  __NR_lstat64
 322 #undef  __NR_fstat64
 323 #undef  __NR_lchown32
 324 #undef  __NR_getuid32
 325 #undef  __NR_getgid32
 326 #undef  __NR_geteuid32
 327 #undef  __NR_getegid32
 328 #undef  __NR_setreuid32
 329 #undef  __NR_setregid32
 330 #undef  __NR_getgroups32
 331 #undef  __NR_setgroups32
 332 #undef  __NR_fchown32
 333 #undef  __NR_setresuid32
 334 #undef  __NR_getresuid32
 335 #undef  __NR_setresgid32
 336 #undef  __NR_getresgid32
 337 #undef  __NR_chown32
 338 #undef  __NR_setuid32
 339 #undef  __NR_setgid32
 340 #undef  __NR_setfsuid32
 341 #undef  __NR_setfsgid32
 342 #undef  __NR_fcntl64
 343 #undef  __NR_sendfile64
 344 #undef  __NR_fadvise64_64
 345
 346 #define __NR_select             142
 347 #define __NR_getrlimit          191     /* SuS compliant getrlimit */
 348 #define __NR_lchown             198
 349 #define __NR_getuid             199
 350 #define __NR_getgid             200
 351 #define __NR_geteuid            201
 352 #define __NR_getegid            202
 353 #define __NR_setreuid           203
 354 #define __NR_setregid           204
 355 #define __NR_getgroups          205
 356 #define __NR_setgroups          206
 357 #define __NR_fchown             207
 358 #define __NR_setresuid          208
 359 #define __NR_getresuid          209
 360 #define __NR_setresgid          210
 361 #define __NR_getresgid          211
 362 #define __NR_chown              212
 363 #define __NR_setuid             213
 364 #define __NR_setgid             214
 365 #define __NR_setfsuid           215
 366 #define __NR_setfsgid           216
 367
 368 #endif
 369
 370 /* user-visible error numbers are in the range -1 - -122: see <asm-s390/errno.h> */
 371
 372 #define __syscall_return(type, res)                          \
 373 do {                                                         \
 374         if ((unsigned long)(res) >= (unsigned long)(-125)) { \
 375                 errno = -(res);                              \
 376                 res = -1;                                    \
 377         }                                                    \
 378         return (type) (res);                                 \
 379 } while (0)
 380
 381 #define _svc_clobber "1", "cc", "memory"
 382
 383 #define _syscall0(type,name)                                 \
 384 type name(void) {                                            \
 385         register long __svcres asm("2");                     \
 386         long __res;                                          \
 387         __asm__ __volatile__ (                               \
 388                 "    .if %1 < 256\n"                         \
 389                 "    svc %b1\n"                              \
 390                 "    .else\n"                                \
 391                 "    la  %%r1,%1\n"                          \
 392                 "    svc 0\n"                                \
 393                 "    .endif"                                 \
 394                 : "=d" (__svcres)                            \
 395                 : "i" (__NR_##name)                          \
 396                 : _svc_clobber );                            \
 397         __res = __svcres;                                    \
 398         __syscall_return(type,__res);                        \
 399 }
 400
 401 #define _syscall1(type,name,type1,arg1)                      \
 402 type name(type1 arg1) {                                      \
 403         register type1 __arg1 asm("2") = arg1;               \
 404         register long __svcres asm("2");                     \
 405         long __res;                                          \
 406         __asm__ __volatile__ (                               \
 407                 "    .if %1 < 256\n"                         \
 408                 "    svc %b1\n"                              \
 409                 "    .else\n"                                \
 410                 "    la  %%r1,%1\n"                          \
 411                 "    svc 0\n"                                \
 412                 "    .endif"                                 \
 413                 : "=d" (__svcres)                            \
 414                 : "i" (__NR_##name),                         \
 415                   "0" (__arg1)                               \
 416                 : _svc_clobber );                            \
 417         __res = __svcres;                                    \
 418         __syscall_return(type,__res);                        \
 419 }
 420
 421 #define _syscall2(type,name,type1,arg1,type2,arg2)           \
 422 type name(type1 arg1, type2 arg2) {                          \
 423         register type1 __arg1 asm("2") = arg1;               \
 424         register type2 __arg2 asm("3") = arg2;               \
 425         register long __svcres asm("2");                     \
 426         long __res;                                          \
 427         __asm__ __volatile__ (                               \
 428                 "    .if %1 < 256\n"                         \
 429                 "    svc %b1\n"                              \
 430                 "    .else\n"                                \
 431                 "    la %%r1,%1\n"                           \
 432                 "    svc 0\n"                                \
 433                 "    .endif"                                 \
 434                 : "=d" (__svcres)                            \
 435                 : "i" (__NR_##name),                         \
 436                   "0" (__arg1),                              \
 437                   "d" (__arg2)                               \
 438                 : _svc_clobber );                            \
 439         __res = __svcres;                                    \
 440         __syscall_return(type,__res);                        \
 441 }
 442
 443 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)\
 444 type name(type1 arg1, type2 arg2, type3 arg3) {              \
 445         register type1 __arg1 asm("2") = arg1;               \
 446         register type2 __arg2 asm("3") = arg2;               \
 447         register type3 __arg3 asm("4") = arg3;               \
 448         register long __svcres asm("2");                     \
 449         long __res;                                          \
 450         __asm__ __volatile__ (                               \
 451                 "    .if %1 < 256\n"                         \
 452                 "    svc %b1\n"                              \
 453                 "    .else\n"                                \
 454                 "    la  %%r1,%1\n"                          \
 455                 "    svc 0\n"                                \
 456                 "    .endif"                                 \
 457                 : "=d" (__svcres)                            \
 458                 : "i" (__NR_##name),                         \
 459                   "0" (__arg1),                              \
 460                   "d" (__arg2),                              \
 461                   "d" (__arg3)                               \
 462                 : _svc_clobber );                            \
 463         __res = __svcres;                                    \
 464         __syscall_return(type,__res);                        \
 465 }
 466
 467 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,\
 468                   type4,name4)                               \
 469 type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {  \
 470         register type1 __arg1 asm("2") = arg1;               \
 471         register type2 __arg2 asm("3") = arg2;               \
 472         register type3 __arg3 asm("4") = arg3;               \
 473         register type4 __arg4 asm("5") = arg4;               \
 474         register long __svcres asm("2");                     \
 475         long __res;                                          \
 476         __asm__ __volatile__ (                               \
 477                 "    .if %1 < 256\n"                         \
 478                 "    svc %b1\n"                              \
 479                 "    .else\n"                                \
 480                 "    la  %%r1,%1\n"                          \
 481                 "    svc 0\n"                                \
 482                 "    .endif"                                 \
 483                 : "=d" (__svcres)                            \
 484                 : "i" (__NR_##name),                         \
 485                   "0" (__arg1),                              \
 486                   "d" (__arg2),                              \
 487                   "d" (__arg3),                              \
 488                   "d" (__arg4)                               \
 489                 : _svc_clobber );                            \
 490         __res = __svcres;                                    \
 491         __syscall_return(type,__res);                        \
 492 }
 493
 494 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,\
 495                   type4,name4,type5,name5)                   \
 496 type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4,    \
 497           type5 arg5) {                                      \
 498         register type1 __arg1 asm("2") = arg1;               \
 499         register type2 __arg2 asm("3") = arg2;               \
 500         register type3 __arg3 asm("4") = arg3;               \
 501         register type4 __arg4 asm("5") = arg4;               \
 502         register type5 __arg5 asm("6") = arg5;               \
 503         register long __svcres asm("2");                     \
 504         long __res;                                          \
 505         __asm__ __volatile__ (                               \
 506                 "    .if %1 < 256\n"                         \
 507                 "    svc %b1\n"                              \
 508                 "    .else\n"                                \
 509                 "    la  %%r1,%1\n"                          \
 510                 "    svc 0\n"                                \
 511                 "    .endif"                                 \
 512                 : "=d" (__svcres)                            \
 513                 : "i" (__NR_##name),                         \
 514                   "0" (__arg1),                              \
 515                   "d" (__arg2),                              \
 516                   "d" (__arg3),                              \
 517                   "d" (__arg4),                              \
 518                   "d" (__arg5)                               \
 519                 : _svc_clobber );                            \
 520         __res = __svcres;                                    \
 521         __syscall_return(type,__res);                        \
 522 }
 523
 524 #ifdef __KERNEL__
 525 #define __ARCH_WANT_IPC_PARSE_VERSION
 526 #define __ARCH_WANT_OLD_READDIR
 527 #define __ARCH_WANT_SYS_ALARM
 528 #define __ARCH_WANT_SYS_GETHOSTNAME
 529 #define __ARCH_WANT_SYS_PAUSE
 530 #define __ARCH_WANT_SYS_SIGNAL
 531 #define __ARCH_WANT_SYS_UTIME
 532 #define __ARCH_WANT_SYS_SOCKETCALL
 533 #define __ARCH_WANT_SYS_FADVISE64
 534 #define __ARCH_WANT_SYS_GETPGRP
 535 #define __ARCH_WANT_SYS_LLSEEK
 536 #define __ARCH_WANT_SYS_NICE
 537 #define __ARCH_WANT_SYS_OLD_GETRLIMIT
 538 #define __ARCH_WANT_SYS_OLDUMOUNT
 539 #define __ARCH_WANT_SYS_SIGPENDING
 540 #define __ARCH_WANT_SYS_SIGPROCMASK
 541 #define __ARCH_WANT_SYS_RT_SIGACTION
 542 # ifdef CONFIG_ARCH_S390_31
 543 #   define __ARCH_WANT_STAT64
 544 #   define __ARCH_WANT_SYS_TIME
 545 # endif
 546 # define __ARCH_WANT_COMPAT_SYS_TIME
 547 #endif
 548
 549 #ifdef __KERNEL_SYSCALLS__
 550
 551 #include <linux/config.h>
 552 #include <linux/compiler.h>
 553 #include <linux/types.h>
 554 #include <asm/ptrace.h>
 555 #include <asm/stat.h>
 556 #include <linux/syscalls.h>
 557
 558 /*
 559  * we need this inline - forking from kernel space will result
 560  * in NO COPY ON WRITE (!!!), until an execve is executed. This
 561  * is no problem, but for the stack. This is handled by not letting
 562  * main() use the stack at all after fork(). Thus, no function
 563  * calls - which means inline code for fork too, as otherwise we
 564  * would use the stack upon exit from 'fork()'.
 565  *
 566  * Actually only pause and fork are needed inline, so that there
 567  * won't be any messing with the stack from main(), but we define
 568  * some others too.
 569  */
 570 #define __NR__exit __NR_exit
 571 static inline _syscall0(pid_t,setsid)
 572 static inline _syscall3(int,write,int,fd,const char *,buf,off_t,count)
 573 static inline _syscall3(int,read,int,fd,char *,buf,off_t,count)
 574 static inline _syscall3(off_t,lseek,int,fd,off_t,offset,int,count)
 575 static inline _syscall1(int,dup,int,fd)
 576 static inline _syscall3(int,execve,const char *,file,char **,argv,char **,envp)
 577 static inline _syscall3(int,open,const char *,file,int,flag,int,mode)
 578 static inline _syscall1(int,close,int,fd)
 579 static inline _syscall2(long,stat,char *,filename,struct stat *,statbuf)
 580
 581 static inline pid_t waitpid(int pid, int *wait_stat, int flags)
 582 {
 583         return sys_wait4(pid, wait_stat, flags, NULL);
 584 }
 585 struct mmap_arg_struct;
 586 asmlinkage long sys_mmap2(struct mmap_arg_struct __user *arg);
 587
 588 asmlinkage long sys_execve(struct pt_regs regs);
 589 asmlinkage long sys_clone(struct pt_regs regs);
 590 asmlinkage long sys_fork(struct pt_regs regs);
 591 asmlinkage long sys_vfork(struct pt_regs regs);
 592 asmlinkage long sys_pipe(unsigned long __user *fildes);
 593 struct sigaction;
 594 asmlinkage long sys_rt_sigaction(int sig,
 595                                 const struct sigaction __user *act,
 596                                 struct sigaction __user *oact,
 597                                 size_t sigsetsize);
 598
 599 #endif
 600
 601 /*
 602  * "Conditional" syscalls
 603  *
 604  * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
 605  * but it doesn't work on all toolchains, so we just do it by hand
 606  */
 607 #define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall")
 608
 609 #endif /* _ASM_S390_UNISTD_H_ */