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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1693 | serge | 1 | /* sys/signal.h */ |
| 2 | |||
| 3 | #ifndef _SYS_SIGNAL_H |
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| 4 | #define _SYS_SIGNAL_H |
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| 5 | #ifdef __cplusplus |
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| 6 | extern "C" { |
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| 7 | #endif |
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| 8 | |||
| 9 | #include "_ansi.h" |
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| 10 | #include |
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| 11 | #include |
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| 12 | |||
| 13 | /* #ifndef __STRICT_ANSI__*/ |
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| 14 | |||
| 15 | typedef unsigned long sigset_t; |
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| 16 | |||
| 17 | #if defined(__rtems__) |
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| 18 | |||
| 19 | #if defined(_POSIX_REALTIME_SIGNALS) |
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| 20 | |||
| 21 | /* sigev_notify values |
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| 22 | NOTE: P1003.1c/D10, p. 34 adds SIGEV_THREAD. */ |
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| 23 | |||
| 24 | #define SIGEV_NONE 1 /* No asynchronous notification shall be delivered */ |
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| 25 | /* when the event of interest occurs. */ |
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| 26 | #define SIGEV_SIGNAL 2 /* A queued signal, with an application defined */ |
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| 27 | /* value, shall be delivered when the event of */ |
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| 28 | /* interest occurs. */ |
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| 29 | #define SIGEV_THREAD 3 /* A notification function shall be called to */ |
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| 30 | /* perform notification. */ |
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| 31 | |||
| 32 | /* Signal Generation and Delivery, P1003.1b-1993, p. 63 |
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| 33 | NOTE: P1003.1c/D10, p. 34 adds sigev_notify_function and |
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| 34 | sigev_notify_attributes to the sigevent structure. */ |
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| 35 | |||
| 36 | union sigval { |
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| 37 | int sival_int; /* Integer signal value */ |
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| 38 | void *sival_ptr; /* Pointer signal value */ |
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| 39 | }; |
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| 40 | |||
| 41 | struct sigevent { |
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| 42 | int sigev_notify; /* Notification type */ |
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| 43 | int sigev_signo; /* Signal number */ |
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| 44 | union sigval sigev_value; /* Signal value */ |
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| 45 | |||
| 46 | #if defined(_POSIX_THREADS) |
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| 47 | void (*sigev_notify_function)( union sigval ); |
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| 48 | /* Notification function */ |
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| 49 | pthread_attr_t *sigev_notify_attributes; /* Notification Attributes */ |
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| 50 | #endif |
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| 51 | }; |
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| 52 | |||
| 53 | /* Signal Actions, P1003.1b-1993, p. 64 */ |
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| 54 | /* si_code values, p. 66 */ |
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| 55 | |||
| 56 | #define SI_USER 1 /* Sent by a user. kill(), abort(), etc */ |
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| 57 | #define SI_QUEUE 2 /* Sent by sigqueue() */ |
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| 58 | #define SI_TIMER 3 /* Sent by expiration of a timer_settime() timer */ |
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| 59 | #define SI_ASYNCIO 4 /* Indicates completion of asycnhronous IO */ |
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| 60 | #define SI_MESGQ 5 /* Indicates arrival of a message at an empty queue */ |
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| 61 | |||
| 62 | typedef struct { |
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| 63 | int si_signo; /* Signal number */ |
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| 64 | int si_code; /* Cause of the signal */ |
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| 65 | union sigval si_value; /* Signal value */ |
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| 66 | } siginfo_t; |
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| 67 | #endif |
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| 68 | |||
| 69 | /* 3.3.8 Synchronously Accept a Signal, P1003.1b-1993, p. 76 */ |
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| 70 | |||
| 71 | #define SA_NOCLDSTOP 1 /* Do not generate SIGCHLD when children stop */ |
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| 72 | #define SA_SIGINFO 2 /* Invoke the signal catching function with */ |
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| 73 | /* three arguments instead of one. */ |
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| 74 | |||
| 75 | /* struct sigaction notes from POSIX: |
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| 76 | * |
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| 77 | * (1) Routines stored in sa_handler should take a single int as |
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| 78 | * their argument although the POSIX standard does not require this. |
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| 3065 | serge | 79 | * This is not longer true since at least POSIX.1-2008 |
| 1693 | serge | 80 | * (2) The fields sa_handler and sa_sigaction may overlap, and a conforming |
| 81 | * application should not use both simultaneously. |
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| 82 | */ |
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| 83 | |||
| 3065 | serge | 84 | typedef void (*_sig_func_ptr)(int); |
| 1693 | serge | 85 | |
| 86 | struct sigaction { |
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| 87 | int sa_flags; /* Special flags to affect behavior of signal */ |
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| 88 | sigset_t sa_mask; /* Additional set of signals to be blocked */ |
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| 89 | /* during execution of signal-catching */ |
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| 90 | /* function. */ |
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| 91 | union { |
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| 92 | _sig_func_ptr _handler; /* SIG_DFL, SIG_IGN, or pointer to a function */ |
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| 93 | #if defined(_POSIX_REALTIME_SIGNALS) |
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| 94 | void (*_sigaction)( int, siginfo_t *, void * ); |
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| 95 | #endif |
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| 96 | } _signal_handlers; |
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| 97 | }; |
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| 98 | |||
| 99 | #define sa_handler _signal_handlers._handler |
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| 100 | #if defined(_POSIX_REALTIME_SIGNALS) |
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| 101 | #define sa_sigaction _signal_handlers._sigaction |
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| 102 | #endif |
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| 103 | |||
| 104 | #elif defined(__CYGWIN__) |
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| 105 | #include |
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| 106 | #else |
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| 107 | #define SA_NOCLDSTOP 1 /* only value supported now for sa_flags */ |
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| 108 | |||
| 109 | typedef void (*_sig_func_ptr)(int); |
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| 110 | |||
| 111 | struct sigaction |
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| 112 | { |
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| 113 | _sig_func_ptr sa_handler; |
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| 114 | sigset_t sa_mask; |
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| 115 | int sa_flags; |
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| 116 | }; |
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| 117 | #endif /* defined(__rtems__) */ |
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| 118 | |||
| 119 | #define SIG_SETMASK 0 /* set mask with sigprocmask() */ |
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| 120 | #define SIG_BLOCK 1 /* set of signals to block */ |
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| 121 | #define SIG_UNBLOCK 2 /* set of signals to, well, unblock */ |
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| 122 | |||
| 123 | /* These depend upon the type of sigset_t, which right now |
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| 124 | is always a long.. They're in the POSIX namespace, but |
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| 125 | are not ANSI. */ |
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| 126 | #define sigaddset(what,sig) (*(what) |= (1<<(sig)), 0) |
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| 127 | #define sigdelset(what,sig) (*(what) &= ~(1<<(sig)), 0) |
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| 128 | #define sigemptyset(what) (*(what) = 0, 0) |
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| 129 | #define sigfillset(what) (*(what) = ~(0), 0) |
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| 130 | #define sigismember(what,sig) (((*(what)) & (1<<(sig))) != 0) |
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| 131 | |||
| 132 | int _EXFUN(sigprocmask, (int how, const sigset_t *set, sigset_t *oset)); |
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| 133 | |||
| 134 | #if defined(_POSIX_THREADS) |
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| 135 | int _EXFUN(pthread_sigmask, (int how, const sigset_t *set, sigset_t *oset)); |
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| 136 | #endif |
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| 137 | |||
| 138 | /* protos for functions found in winsup sources for CYGWIN */ |
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| 139 | #if defined(__CYGWIN__) || defined(__rtems__) |
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| 140 | #undef sigaddset |
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| 141 | #undef sigdelset |
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| 142 | #undef sigemptyset |
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| 143 | #undef sigfillset |
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| 144 | #undef sigismember |
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| 145 | |||
| 146 | int _EXFUN(kill, (pid_t, int)); |
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| 147 | int _EXFUN(killpg, (pid_t, int)); |
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| 148 | int _EXFUN(sigaction, (int, const struct sigaction *, struct sigaction *)); |
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| 149 | int _EXFUN(sigaddset, (sigset_t *, const int)); |
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| 150 | int _EXFUN(sigdelset, (sigset_t *, const int)); |
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| 151 | int _EXFUN(sigismember, (const sigset_t *, int)); |
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| 152 | int _EXFUN(sigfillset, (sigset_t *)); |
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| 153 | int _EXFUN(sigemptyset, (sigset_t *)); |
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| 154 | int _EXFUN(sigpending, (sigset_t *)); |
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| 155 | int _EXFUN(sigsuspend, (const sigset_t *)); |
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| 156 | int _EXFUN(sigpause, (int)); |
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| 157 | |||
| 158 | #if defined(_POSIX_THREADS) |
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| 159 | #ifdef __CYGWIN__ |
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| 160 | # ifndef _CYGWIN_TYPES_H |
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| 161 | # error You need the winsup sources or a cygwin installation to compile the cygwin version of newlib. |
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| 162 | # endif |
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| 163 | #endif |
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| 164 | int _EXFUN(pthread_kill, (pthread_t thread, int sig)); |
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| 165 | #endif |
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| 166 | |||
| 167 | #if defined(_POSIX_REALTIME_SIGNALS) |
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| 168 | |||
| 169 | /* 3.3.8 Synchronously Accept a Signal, P1003.1b-1993, p. 76 |
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| 170 | NOTE: P1003.1c/D10, p. 39 adds sigwait(). */ |
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| 171 | |||
| 172 | int _EXFUN(sigwaitinfo, (const sigset_t *set, siginfo_t *info)); |
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| 173 | int _EXFUN(sigtimedwait, |
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| 174 | (const sigset_t *set, siginfo_t *info, const struct timespec *timeout) |
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| 175 | ); |
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| 176 | int _EXFUN(sigwait, (const sigset_t *set, int *sig)); |
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| 177 | |||
| 178 | /* 3.3.9 Queue a Signal to a Process, P1003.1b-1993, p. 78 */ |
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| 179 | int _EXFUN(sigqueue, (pid_t pid, int signo, const union sigval value)); |
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| 180 | |||
| 181 | #endif /* defined(_POSIX_REALTIME_SIGNALS) */ |
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| 182 | |||
| 183 | #endif /* defined(__CYGWIN__) || defined(__rtems__) */ |
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| 184 | |||
| 185 | /* #endif __STRICT_ANSI__ */ |
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| 186 | |||
| 187 | #if defined(___AM29K__) |
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| 188 | /* These all need to be defined for ANSI C, but I don't think they are |
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| 189 | meaningful. */ |
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| 190 | #define SIGABRT 1 |
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| 191 | #define SIGFPE 1 |
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| 192 | #define SIGILL 1 |
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| 193 | #define SIGINT 1 |
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| 194 | #define SIGSEGV 1 |
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| 195 | #define SIGTERM 1 |
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| 196 | /* These need to be defined for POSIX, and some others do too. */ |
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| 197 | #define SIGHUP 1 |
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| 198 | #define SIGQUIT 1 |
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| 199 | #define NSIG 2 |
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| 200 | #elif defined(__GO32__) |
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| 201 | #define SIGINT 1 |
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| 202 | #define SIGKILL 2 |
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| 203 | #define SIGPIPE 3 |
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| 204 | #define SIGFPE 4 |
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| 205 | #define SIGHUP 5 |
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| 206 | #define SIGTERM 6 |
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| 207 | #define SIGSEGV 7 |
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| 208 | #define SIGTSTP 8 |
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| 209 | #define SIGQUIT 9 |
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| 210 | #define SIGTRAP 10 |
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| 211 | #define SIGILL 11 |
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| 212 | #define SIGEMT 12 |
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| 213 | #define SIGALRM 13 |
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| 214 | #define SIGBUS 14 |
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| 215 | #define SIGLOST 15 |
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| 216 | #define SIGSTOP 16 |
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| 217 | #define SIGABRT 17 |
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| 218 | #define SIGUSR1 18 |
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| 219 | #define SIGUSR2 19 |
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| 220 | #define NSIG 20 |
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| 221 | #elif !defined(SIGTRAP) |
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| 222 | #define SIGHUP 1 /* hangup */ |
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| 223 | #define SIGINT 2 /* interrupt */ |
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| 224 | #define SIGQUIT 3 /* quit */ |
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| 225 | #define SIGILL 4 /* illegal instruction (not reset when caught) */ |
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| 226 | #define SIGTRAP 5 /* trace trap (not reset when caught) */ |
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| 227 | #define SIGIOT 6 /* IOT instruction */ |
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| 228 | #define SIGABRT 6 /* used by abort, replace SIGIOT in the future */ |
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| 229 | #define SIGEMT 7 /* EMT instruction */ |
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| 230 | #define SIGFPE 8 /* floating point exception */ |
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| 231 | #define SIGKILL 9 /* kill (cannot be caught or ignored) */ |
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| 232 | #define SIGBUS 10 /* bus error */ |
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| 233 | #define SIGSEGV 11 /* segmentation violation */ |
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| 234 | #define SIGSYS 12 /* bad argument to system call */ |
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| 235 | #define SIGPIPE 13 /* write on a pipe with no one to read it */ |
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| 236 | #define SIGALRM 14 /* alarm clock */ |
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| 237 | #define SIGTERM 15 /* software termination signal from kill */ |
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| 238 | |||
| 239 | #if defined(__rtems__) |
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| 240 | #define SIGURG 16 /* urgent condition on IO channel */ |
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| 241 | #define SIGSTOP 17 /* sendable stop signal not from tty */ |
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| 242 | #define SIGTSTP 18 /* stop signal from tty */ |
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| 243 | #define SIGCONT 19 /* continue a stopped process */ |
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| 244 | #define SIGCHLD 20 /* to parent on child stop or exit */ |
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| 245 | #define SIGCLD 20 /* System V name for SIGCHLD */ |
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| 246 | #define SIGTTIN 21 /* to readers pgrp upon background tty read */ |
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| 247 | #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */ |
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| 248 | #define SIGIO 23 /* input/output possible signal */ |
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| 249 | #define SIGPOLL SIGIO /* System V name for SIGIO */ |
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| 250 | #define SIGWINCH 24 /* window changed */ |
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| 251 | #define SIGUSR1 25 /* user defined signal 1 */ |
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| 252 | #define SIGUSR2 26 /* user defined signal 2 */ |
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| 253 | |||
| 254 | /* Real-Time Signals Range, P1003.1b-1993, p. 61 |
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| 255 | NOTE: By P1003.1b-1993, this should be at least RTSIG_MAX |
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| 256 | (which is a minimum of 8) signals. |
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| 257 | */ |
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| 258 | #define SIGRTMIN 27 |
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| 259 | #define SIGRTMAX 31 |
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| 260 | #define __SIGFIRSTNOTRT SIGHUP |
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| 261 | #define __SIGLASTNOTRT SIGUSR2 |
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| 262 | |||
| 263 | #define NSIG 32 /* signal 0 implied */ |
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| 264 | |||
| 265 | #elif defined(__svr4__) |
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| 266 | /* svr4 specifics. different signals above 15, and sigaction. */ |
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| 267 | #define SIGUSR1 16 |
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| 268 | #define SIGUSR2 17 |
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| 269 | #define SIGCLD 18 |
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| 270 | #define SIGPWR 19 |
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| 271 | #define SIGWINCH 20 |
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| 272 | #define SIGPOLL 22 /* 20 for x.out binaries!!!! */ |
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| 273 | #define SIGSTOP 23 /* sendable stop signal not from tty */ |
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| 274 | #define SIGTSTP 24 /* stop signal from tty */ |
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| 275 | #define SIGCONT 25 /* continue a stopped process */ |
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| 276 | #define SIGTTIN 26 /* to readers pgrp upon background tty read */ |
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| 277 | #define SIGTTOU 27 /* like TTIN for output if (tp->t_local<OSTOP) */ |
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| 278 | #define NSIG 28 |
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| 279 | #else |
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| 280 | #define SIGURG 16 /* urgent condition on IO channel */ |
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| 281 | #define SIGSTOP 17 /* sendable stop signal not from tty */ |
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| 282 | #define SIGTSTP 18 /* stop signal from tty */ |
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| 283 | #define SIGCONT 19 /* continue a stopped process */ |
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| 284 | #define SIGCHLD 20 /* to parent on child stop or exit */ |
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| 285 | #define SIGCLD 20 /* System V name for SIGCHLD */ |
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| 286 | #define SIGTTIN 21 /* to readers pgrp upon background tty read */ |
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| 287 | #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */ |
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| 288 | #define SIGIO 23 /* input/output possible signal */ |
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| 289 | #define SIGPOLL SIGIO /* System V name for SIGIO */ |
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| 290 | #define SIGXCPU 24 /* exceeded CPU time limit */ |
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| 291 | #define SIGXFSZ 25 /* exceeded file size limit */ |
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| 292 | #define SIGVTALRM 26 /* virtual time alarm */ |
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| 293 | #define SIGPROF 27 /* profiling time alarm */ |
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| 294 | #define SIGWINCH 28 /* window changed */ |
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| 295 | #define SIGLOST 29 /* resource lost (eg, record-lock lost) */ |
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| 296 | #define SIGUSR1 30 /* user defined signal 1 */ |
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| 297 | #define SIGUSR2 31 /* user defined signal 2 */ |
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| 298 | #define NSIG 32 /* signal 0 implied */ |
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| 299 | #endif |
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| 300 | #endif |
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| 301 | |||
| 302 | #ifdef __cplusplus |
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| 303 | } |
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| 304 | #endif |
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| 305 | |||
| 306 | #ifndef _SIGNAL_H_ |
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| 307 | /* Some applications take advantage of the fact that |
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| 308 | * and |
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| 309 | #include |
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| 310 | #endif |
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| 311 | #endif /* _SYS_SIGNAL_H */ |