libc-top-half/musl/include/signal.h

   1 #ifndef _SIGNAL_H
   2 #define _SIGNAL_H
   3
   4 #ifdef __cplusplus
   5 extern "C" {
   6 #endif
   7
   8 #include <features.h>
   9
  10 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  11  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
  12  || defined(_BSD_SOURCE)
  13
  14 #ifdef __wasilibc_unmodified_upstream /* WASI has no ucontext support */
  15 #ifdef _GNU_SOURCE
  16 #define __ucontext ucontext
  17 #endif
  18 #endif
  19
  20 #define __NEED_size_t
  21 #define __NEED_pid_t
  22 #define __NEED_uid_t
  23 #define __NEED_struct_timespec
  24 #define __NEED_pthread_t
  25 #define __NEED_pthread_attr_t
  26 #define __NEED_time_t
  27 #define __NEED_clock_t
  28 #define __NEED_sigset_t
  29
  30 #include <bits/alltypes.h>
  31
  32 #define SIG_BLOCK     0
  33 #define SIG_UNBLOCK   1
  34 #define SIG_SETMASK   2
  35
  36 #define SI_ASYNCNL (-60)
  37 #define SI_TKILL (-6)
  38 #define SI_SIGIO (-5)
  39 #define SI_ASYNCIO (-4)
  40 #define SI_MESGQ (-3)
  41 #define SI_TIMER (-2)
  42 #define SI_QUEUE (-1)
  43 #define SI_USER 0
  44 #define SI_KERNEL 128
  45
  46 typedef struct sigaltstack stack_t;
  47
  48 #endif
  49
  50 #include <bits/signal.h>
  51
  52 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  53  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
  54  || defined(_BSD_SOURCE)
  55
  56 #define SIG_HOLD ((void (*)(int)) 2)
  57
  58 #define FPE_INTDIV 1
  59 #define FPE_INTOVF 2
  60 #define FPE_FLTDIV 3
  61 #define FPE_FLTOVF 4
  62 #define FPE_FLTUND 5
  63 #define FPE_FLTRES 6
  64 #define FPE_FLTINV 7
  65 #define FPE_FLTSUB 8
  66
  67 #define ILL_ILLOPC 1
  68 #define ILL_ILLOPN 2
  69 #define ILL_ILLADR 3
  70 #define ILL_ILLTRP 4
  71 #define ILL_PRVOPC 5
  72 #define ILL_PRVREG 6
  73 #define ILL_COPROC 7
  74 #define ILL_BADSTK 8
  75
  76 #define SEGV_MAPERR 1
  77 #define SEGV_ACCERR 2
  78 #define SEGV_BNDERR 3
  79 #define SEGV_PKUERR 4
  80
  81 #define BUS_ADRALN 1
  82 #define BUS_ADRERR 2
  83 #define BUS_OBJERR 3
  84 #define BUS_MCEERR_AR 4
  85 #define BUS_MCEERR_AO 5
  86
  87 #define CLD_EXITED 1
  88 #define CLD_KILLED 2
  89 #define CLD_DUMPED 3
  90 #define CLD_TRAPPED 4
  91 #define CLD_STOPPED 5
  92 #define CLD_CONTINUED 6
  93
  94 union sigval {
  95         int sival_int;
  96         void *sival_ptr;
  97 };
  98
  99 typedef struct {
 100 #ifdef __SI_SWAP_ERRNO_CODE
 101         int si_signo, si_code, si_errno;
 102 #else
 103         int si_signo, si_errno, si_code;
 104 #endif
 105         union {
 106                 char __pad[128 - 2*sizeof(int) - sizeof(long)];
 107                 struct {
 108                         union {
 109                                 struct {
 110                                         pid_t si_pid;
 111                                         uid_t si_uid;
 112                                 } __piduid;
 113                                 struct {
 114                                         int si_timerid;
 115                                         int si_overrun;
 116                                 } __timer;
 117                         } __first;
 118                         union {
 119                                 union sigval si_value;
 120                                 struct {
 121                                         int si_status;
 122                                         clock_t si_utime, si_stime;
 123                                 } __sigchld;
 124                         } __second;
 125                 } __si_common;
 126                 struct {
 127                         void *si_addr;
 128                         short si_addr_lsb;
 129                         union {
 130                                 struct {
 131                                         void *si_lower;
 132                                         void *si_upper;
 133                                 } __addr_bnd;
 134                                 unsigned si_pkey;
 135                         } __first;
 136                 } __sigfault;
 137                 struct {
 138                         long si_band;
 139                         int si_fd;
 140                 } __sigpoll;
 141                 struct {
 142                         void *si_call_addr;
 143                         int si_syscall;
 144                         unsigned si_arch;
 145                 } __sigsys;
 146         } __si_fields;
 147 } siginfo_t;
 148 #define si_pid     __si_fields.__si_common.__first.__piduid.si_pid
 149 #define si_uid     __si_fields.__si_common.__first.__piduid.si_uid
 150 #define si_status  __si_fields.__si_common.__second.__sigchld.si_status
 151 #define si_utime   __si_fields.__si_common.__second.__sigchld.si_utime
 152 #define si_stime   __si_fields.__si_common.__second.__sigchld.si_stime
 153 #define si_value   __si_fields.__si_common.__second.si_value
 154 #define si_addr    __si_fields.__sigfault.si_addr
 155 #define si_addr_lsb __si_fields.__sigfault.si_addr_lsb
 156 #define si_lower   __si_fields.__sigfault.__first.__addr_bnd.si_lower
 157 #define si_upper   __si_fields.__sigfault.__first.__addr_bnd.si_upper
 158 #define si_pkey    __si_fields.__sigfault.__first.si_pkey
 159 #define si_band    __si_fields.__sigpoll.si_band
 160 #define si_fd      __si_fields.__sigpoll.si_fd
 161 #define si_timerid __si_fields.__si_common.__first.__timer.si_timerid
 162 #define si_overrun __si_fields.__si_common.__first.__timer.si_overrun
 163 #define si_ptr     si_value.sival_ptr
 164 #define si_int     si_value.sival_int
 165 #define si_call_addr __si_fields.__sigsys.si_call_addr
 166 #define si_syscall __si_fields.__sigsys.si_syscall
 167 #define si_arch    __si_fields.__sigsys.si_arch
 168
 169 struct sigaction {
 170         union {
 171                 void (*sa_handler)(int);
 172                 void (*sa_sigaction)(int, siginfo_t *, void *);
 173         } __sa_handler;
 174         sigset_t sa_mask;
 175         int sa_flags;
 176         void (*sa_restorer)(void);
 177 };
 178 #define sa_handler   __sa_handler.sa_handler
 179 #define sa_sigaction __sa_handler.sa_sigaction
 180
 181 struct sigevent {
 182         union sigval sigev_value;
 183         int sigev_signo;
 184         int sigev_notify;
 185         void (*sigev_notify_function)(union sigval);
 186         pthread_attr_t *sigev_notify_attributes;
 187         char __pad[56-3*sizeof(long)];
 188 };
 189
 190 #define SIGEV_SIGNAL 0
 191 #define SIGEV_NONE 1
 192 #define SIGEV_THREAD 2
 193
 194 #ifdef __wasilibc_unmodified_upstream /* WASI has no realtime signals */
 195 int __libc_current_sigrtmin(void);
 196 int __libc_current_sigrtmax(void);
 197
 198 #define SIGRTMIN  (__libc_current_sigrtmin())
 199 #define SIGRTMAX  (__libc_current_sigrtmax())
 200 #endif
 201
 202 #ifdef __wasilibc_unmodified_upstream /* WASI has no signals */
 203 int kill(pid_t, int);
 204
 205 int sigemptyset(sigset_t *);
 206 int sigfillset(sigset_t *);
 207 int sigaddset(sigset_t *, int);
 208 int sigdelset(sigset_t *, int);
 209 int sigismember(const sigset_t *, int);
 210
 211 int sigprocmask(int, const sigset_t *__restrict, sigset_t *__restrict);
 212 int sigsuspend(const sigset_t *);
 213 int sigaction(int, const struct sigaction *__restrict, struct sigaction *__restrict);
 214 int sigpending(sigset_t *);
 215 int sigwait(const sigset_t *__restrict, int *__restrict);
 216 int sigwaitinfo(const sigset_t *__restrict, siginfo_t *__restrict);
 217 int sigtimedwait(const sigset_t *__restrict, siginfo_t *__restrict, const struct timespec *__restrict);
 218 int sigqueue(pid_t, int, union sigval);
 219 #endif
 220
 221 int pthread_sigmask(int, const sigset_t *__restrict, sigset_t *__restrict);
 222 int pthread_kill(pthread_t, int);
 223
 224 #ifdef __wasilibc_unmodified_upstream /* WASI has no signals */
 225 void psiginfo(const siginfo_t *, const char *);
 226 void psignal(int, const char *);
 227 #endif
 228
 229 #endif
 230
 231 #ifdef __wasilibc_unmodified_upstream /* WASI has no signals */
 232 #if defined(_XOPEN_SOURCE) || defined(_BSD_SOURCE) || defined(_GNU_SOURCE)
 233 int killpg(pid_t, int);
 234 int sigaltstack(const stack_t *__restrict, stack_t *__restrict);
 235 int sighold(int);
 236 int sigignore(int);
 237 int siginterrupt(int, int);
 238 int sigpause(int);
 239 int sigrelse(int);
 240 void (*sigset(int, void (*)(int)))(int);
 241 #define TRAP_BRKPT 1
 242 #define TRAP_TRACE 2
 243 #define TRAP_BRANCH 3
 244 #define TRAP_HWBKPT 4
 245 #define TRAP_UNK 5
 246 #define POLL_IN 1
 247 #define POLL_OUT 2
 248 #define POLL_MSG 3
 249 #define POLL_ERR 4
 250 #define POLL_PRI 5
 251 #define POLL_HUP 6
 252 #define SS_ONSTACK    1
 253 #define SS_DISABLE    2
 254 #define SS_AUTODISARM (1U << 31)
 255 #define SS_FLAG_BITS SS_AUTODISARM
 256 #endif
 257 #endif
 258
 259 #ifdef __wasilibc_unmodified_upstream /* WASI has no signals */
 260 #if defined(_BSD_SOURCE) || defined(_GNU_SOURCE)
 261 #define NSIG _NSIG
 262 typedef void (*sig_t)(int);
 263 #endif
 264
 265 #ifdef _GNU_SOURCE
 266 typedef void (*sighandler_t)(int);
 267 void (*bsd_signal(int, void (*)(int)))(int);
 268 int sigisemptyset(const sigset_t *);
 269 int sigorset (sigset_t *, const sigset_t *, const sigset_t *);
 270 int sigandset(sigset_t *, const sigset_t *, const sigset_t *);
 271
 272 #define SA_NOMASK SA_NODEFER
 273 #define SA_ONESHOT SA_RESETHAND
 274 #endif
 275
 276 #define SIG_ERR  ((void (*)(int))-1)
 277 #define SIG_DFL  ((void (*)(int)) 0)
 278 #define SIG_IGN  ((void (*)(int)) 1)
 279 #endif
 280
 281 typedef int sig_atomic_t;
 282
 283 #ifdef __wasilibc_unmodified_upstream /* WASI has no signals */
 284 void (*signal(int, void (*)(int)))(int);
 285 #endif
 286 int raise(int);
 287
 288 #if _REDIR_TIME64
 289 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
 290  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
 291  || defined(_BSD_SOURCE)
 292 __REDIR(sigtimedwait, __sigtimedwait_time64);
 293 #endif
 294 #endif
 295
 296 #ifdef __cplusplus
 297 }
 298 #endif
 299
 300 #endif