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/* sys/signal.h */
#ifndef _SYS_SIGNAL_H
#define _SYS_SIGNAL_H
#ifdef __cplusplus
extern "C" {
#endif
#include "_ansi.h"
#include <sys/features.h>
#include <sys/types.h>
/* #ifndef __STRICT_ANSI__*/
typedef unsigned long sigset_t;
#if defined(__rtems__)
#if defined(_POSIX_REALTIME_SIGNALS)
/* sigev_notify values
NOTE: P1003.1c/D10, p. 34 adds SIGEV_THREAD. */
#define SIGEV_NONE 1 /* No asynchronous notification shall be delivered */
/* when the event of interest occurs. */
#define SIGEV_SIGNAL 2 /* A queued signal, with an application defined */
/* value, shall be delivered when the event of */
/* interest occurs. */
#define SIGEV_THREAD 3 /* A notification function shall be called to */
/* perform notification. */
/* Signal Generation and Delivery, P1003.1b-1993, p. 63
NOTE: P1003.1c/D10, p. 34 adds sigev_notify_function and
sigev_notify_attributes to the sigevent structure. */
union sigval {
int sival_int; /* Integer signal value */
void *sival_ptr; /* Pointer signal value */
};
struct sigevent {
int sigev_notify; /* Notification type */
int sigev_signo; /* Signal number */
union sigval sigev_value; /* Signal value */
#if defined(_POSIX_THREADS)
void (*sigev_notify_function)( union sigval );
/* Notification function */
pthread_attr_t *sigev_notify_attributes; /* Notification Attributes */
#endif
};
/* Signal Actions, P1003.1b-1993, p. 64 */
/* si_code values, p. 66 */
#define SI_USER 1 /* Sent by a user. kill(), abort(), etc */
#define SI_QUEUE 2 /* Sent by sigqueue() */
#define SI_TIMER 3 /* Sent by expiration of a timer_settime() timer */
#define SI_ASYNCIO 4 /* Indicates completion of asycnhronous IO */
#define SI_MESGQ 5 /* Indicates arrival of a message at an empty queue */
typedef struct {
int si_signo; /* Signal number */
int si_code; /* Cause of the signal */
union sigval si_value; /* Signal value */
} siginfo_t;
#endif
/* 3.3.8 Synchronously Accept a Signal, P1003.1b-1993, p. 76 */
#define SA_NOCLDSTOP 1 /* Do not generate SIGCHLD when children stop */
#define SA_SIGINFO 2 /* Invoke the signal catching function with */
/* three arguments instead of one. */
/* struct sigaction notes from POSIX:
*
* (1) Routines stored in sa_handler should take a single int as
* their argument although the POSIX standard does not require this.
* This is not longer true since at least POSIX.1-2008
* (2) The fields sa_handler and sa_sigaction may overlap, and a conforming
* application should not use both simultaneously.
*/
typedef void (*_sig_func_ptr)(int);
struct sigaction {
int sa_flags; /* Special flags to affect behavior of signal */
sigset_t sa_mask; /* Additional set of signals to be blocked */
/* during execution of signal-catching */
/* function. */
union {
_sig_func_ptr _handler; /* SIG_DFL, SIG_IGN, or pointer to a function */
#if defined(_POSIX_REALTIME_SIGNALS)
void (*_sigaction)( int, siginfo_t *, void * );
#endif
} _signal_handlers;
};
#define sa_handler _signal_handlers._handler
#if defined(_POSIX_REALTIME_SIGNALS)
#define sa_sigaction _signal_handlers._sigaction
#endif
#elif defined(__CYGWIN__)
#include <cygwin/signal.h>
#else
#define SA_NOCLDSTOP 1 /* only value supported now for sa_flags */
typedef void (*_sig_func_ptr)(int);
struct sigaction
{
_sig_func_ptr sa_handler;
sigset_t sa_mask;
int sa_flags;
};
#endif /* defined(__rtems__) */
#define SIG_SETMASK 0 /* set mask with sigprocmask() */
#define SIG_BLOCK 1 /* set of signals to block */
#define SIG_UNBLOCK 2 /* set of signals to, well, unblock */
/* These depend upon the type of sigset_t, which right now
is always a long.. They're in the POSIX namespace, but
are not ANSI. */
#define sigaddset(what,sig) (*(what) |= (1<<(sig)), 0)
#define sigdelset(what,sig) (*(what) &= ~(1<<(sig)), 0)
#define sigemptyset(what) (*(what) = 0, 0)
#define sigfillset(what) (*(what) = ~(0), 0)
#define sigismember(what,sig) (((*(what)) & (1<<(sig))) != 0)
int _EXFUN(sigprocmask, (int how, const sigset_t *set, sigset_t *oset));
#if defined(_POSIX_THREADS)
int _EXFUN(pthread_sigmask, (int how, const sigset_t *set, sigset_t *oset));
#endif
/* protos for functions found in winsup sources for CYGWIN */
#if defined(__CYGWIN__) || defined(__rtems__)
#undef sigaddset
#undef sigdelset
#undef sigemptyset
#undef sigfillset
#undef sigismember
int _EXFUN(kill, (pid_t, int));
int _EXFUN(killpg, (pid_t, int));
int _EXFUN(sigaction, (int, const struct sigaction *, struct sigaction *));
int _EXFUN(sigaddset, (sigset_t *, const int));
int _EXFUN(sigdelset, (sigset_t *, const int));
int _EXFUN(sigismember, (const sigset_t *, int));
int _EXFUN(sigfillset, (sigset_t *));
int _EXFUN(sigemptyset, (sigset_t *));
int _EXFUN(sigpending, (sigset_t *));
int _EXFUN(sigsuspend, (const sigset_t *));
int _EXFUN(sigpause, (int));
#if defined(_POSIX_THREADS)
#ifdef __CYGWIN__
# ifndef _CYGWIN_TYPES_H
# error You need the winsup sources or a cygwin installation to compile the cygwin version of newlib.
# endif
#endif
int _EXFUN(pthread_kill, (pthread_t thread, int sig));
#endif
#if defined(_POSIX_REALTIME_SIGNALS)
/* 3.3.8 Synchronously Accept a Signal, P1003.1b-1993, p. 76
NOTE: P1003.1c/D10, p. 39 adds sigwait(). */
int _EXFUN(sigwaitinfo, (const sigset_t *set, siginfo_t *info));
int _EXFUN(sigtimedwait,
(const sigset_t *set, siginfo_t *info, const struct timespec *timeout)
);
int _EXFUN(sigwait, (const sigset_t *set, int *sig));
/* 3.3.9 Queue a Signal to a Process, P1003.1b-1993, p. 78 */
int _EXFUN(sigqueue, (pid_t pid, int signo, const union sigval value));
#endif /* defined(_POSIX_REALTIME_SIGNALS) */
#endif /* defined(__CYGWIN__) || defined(__rtems__) */
/* #endif __STRICT_ANSI__ */
#if defined(___AM29K__)
/* These all need to be defined for ANSI C, but I don't think they are
meaningful. */
#define SIGABRT 1
#define SIGFPE 1
#define SIGILL 1
#define SIGINT 1
#define SIGSEGV 1
#define SIGTERM 1
/* These need to be defined for POSIX, and some others do too. */
#define SIGHUP 1
#define SIGQUIT 1
#define NSIG 2
#elif defined(__GO32__)
#define SIGINT 1
#define SIGKILL 2
#define SIGPIPE 3
#define SIGFPE 4
#define SIGHUP 5
#define SIGTERM 6
#define SIGSEGV 7
#define SIGTSTP 8
#define SIGQUIT 9
#define SIGTRAP 10
#define SIGILL 11
#define SIGEMT 12
#define SIGALRM 13
#define SIGBUS 14
#define SIGLOST 15
#define SIGSTOP 16
#define SIGABRT 17
#define SIGUSR1 18
#define SIGUSR2 19
#define NSIG 20
#elif !defined(SIGTRAP)
#define SIGHUP 1 /* hangup */
#define SIGINT 2 /* interrupt */
#define SIGQUIT 3 /* quit */
#define SIGILL 4 /* illegal instruction (not reset when caught) */
#define SIGTRAP 5 /* trace trap (not reset when caught) */
#define SIGIOT 6 /* IOT instruction */
#define SIGABRT 6 /* used by abort, replace SIGIOT in the future */
#define SIGEMT 7 /* EMT instruction */
#define SIGFPE 8 /* floating point exception */
#define SIGKILL 9 /* kill (cannot be caught or ignored) */
#define SIGBUS 10 /* bus error */
#define SIGSEGV 11 /* segmentation violation */
#define SIGSYS 12 /* bad argument to system call */
#define SIGPIPE 13 /* write on a pipe with no one to read it */
#define SIGALRM 14 /* alarm clock */
#define SIGTERM 15 /* software termination signal from kill */
#if defined(__rtems__)
#define SIGURG 16 /* urgent condition on IO channel */
#define SIGSTOP 17 /* sendable stop signal not from tty */
#define SIGTSTP 18 /* stop signal from tty */
#define SIGCONT 19 /* continue a stopped process */
#define SIGCHLD 20 /* to parent on child stop or exit */
#define SIGCLD 20 /* System V name for SIGCHLD */
#define SIGTTIN 21 /* to readers pgrp upon background tty read */
#define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
#define SIGIO 23 /* input/output possible signal */
#define SIGPOLL SIGIO /* System V name for SIGIO */
#define SIGWINCH 24 /* window changed */
#define SIGUSR1 25 /* user defined signal 1 */
#define SIGUSR2 26 /* user defined signal 2 */
/* Real-Time Signals Range, P1003.1b-1993, p. 61
NOTE: By P1003.1b-1993, this should be at least RTSIG_MAX
(which is a minimum of 8) signals.
*/
#define SIGRTMIN 27
#define SIGRTMAX 31
#define __SIGFIRSTNOTRT SIGHUP
#define __SIGLASTNOTRT SIGUSR2
#define NSIG 32 /* signal 0 implied */
#elif defined(__svr4__)
/* svr4 specifics. different signals above 15, and sigaction. */
#define SIGUSR1 16
#define SIGUSR2 17
#define SIGCLD 18
#define SIGPWR 19
#define SIGWINCH 20
#define SIGPOLL 22 /* 20 for x.out binaries!!!! */
#define SIGSTOP 23 /* sendable stop signal not from tty */
#define SIGTSTP 24 /* stop signal from tty */
#define SIGCONT 25 /* continue a stopped process */
#define SIGTTIN 26 /* to readers pgrp upon background tty read */
#define SIGTTOU 27 /* like TTIN for output if (tp->t_local<OSTOP) */
#define NSIG 28
#else
#define SIGURG 16 /* urgent condition on IO channel */
#define SIGSTOP 17 /* sendable stop signal not from tty */
#define SIGTSTP 18 /* stop signal from tty */
#define SIGCONT 19 /* continue a stopped process */
#define SIGCHLD 20 /* to parent on child stop or exit */
#define SIGCLD 20 /* System V name for SIGCHLD */
#define SIGTTIN 21 /* to readers pgrp upon background tty read */
#define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
#define SIGIO 23 /* input/output possible signal */
#define SIGPOLL SIGIO /* System V name for SIGIO */
#define SIGXCPU 24 /* exceeded CPU time limit */
#define SIGXFSZ 25 /* exceeded file size limit */
#define SIGVTALRM 26 /* virtual time alarm */
#define SIGPROF 27 /* profiling time alarm */
#define SIGWINCH 28 /* window changed */
#define SIGLOST 29 /* resource lost (eg, record-lock lost) */
#define SIGUSR1 30 /* user defined signal 1 */
#define SIGUSR2 31 /* user defined signal 2 */
#define NSIG 32 /* signal 0 implied */
#endif
#endif
#ifdef __cplusplus
}
#endif
#ifndef _SIGNAL_H_
/* Some applications take advantage of the fact that <sys/signal.h>
* and <signal.h> are equivalent in glibc. Allow for that here. */
#include <signal.h>
#endif
#endif /* _SYS_SIGNAL_H */
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