367 lines
12 KiB
C
367 lines
12 KiB
C
/* sys/signal.h */
|
|
|
|
#ifndef _SYS_SIGNAL_H
|
|
#define _SYS_SIGNAL_H
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include "_ansi.h"
|
|
#include <sys/cdefs.h>
|
|
#include <sys/features.h>
|
|
#include <sys/types.h>
|
|
#include <sys/_timespec.h>
|
|
|
|
/* #ifndef __STRICT_ANSI__*/
|
|
|
|
/* Cygwin defines it's own sigset_t in include/cygwin/signal.h */
|
|
#ifndef __CYGWIN__
|
|
typedef unsigned long sigset_t;
|
|
#endif
|
|
|
|
#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 0x1 /* Do not generate SIGCHLD when children stop */
|
|
#define SA_SIGINFO 0x2 /* Invoke the signal catching function with */
|
|
/* three arguments instead of one. */
|
|
#if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112
|
|
#define SA_ONSTACK 0x4 /* Signal delivery will be on a separate stack. */
|
|
#endif
|
|
|
|
/* 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__) */
|
|
|
|
#if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112
|
|
/*
|
|
* Minimum and default signal stack constants. Allow for target overrides
|
|
* from <sys/features.h>.
|
|
*/
|
|
#ifndef MINSIGSTKSZ
|
|
#define MINSIGSTKSZ 2048
|
|
#endif
|
|
#ifndef SIGSTKSZ
|
|
#define SIGSTKSZ 8192
|
|
#endif
|
|
|
|
/*
|
|
* Possible values for ss_flags in stack_t below.
|
|
*/
|
|
#define SS_ONSTACK 0x1
|
|
#define SS_DISABLE 0x2
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Structure used in sigaltstack call.
|
|
*/
|
|
typedef struct sigaltstack {
|
|
void *ss_sp; /* Stack base or pointer. */
|
|
int ss_flags; /* Flags. */
|
|
size_t ss_size; /* Stack size. */
|
|
} stack_t;
|
|
|
|
#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
|
|
|
|
#if defined(__CYGWIN__) || defined(__rtems__)
|
|
#undef sigaddset
|
|
#undef sigdelset
|
|
#undef sigemptyset
|
|
#undef sigfillset
|
|
#undef sigismember
|
|
|
|
#ifdef _COMPILING_NEWLIB
|
|
int _EXFUN(_kill, (pid_t, int));
|
|
#endif /* _COMPILING_NEWLIB */
|
|
#endif /* __CYGWIN__ || __rtems__ */
|
|
|
|
int _EXFUN(kill, (pid_t, int));
|
|
|
|
#if defined(__CYGWIN__) || defined(__rtems__)
|
|
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(__CYGWIN__) || defined(__rtems__)
|
|
#if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112
|
|
int _EXFUN(sigaltstack, (const stack_t *__restrict, stack_t *__restrict));
|
|
#endif
|
|
#endif
|
|
|
|
#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
|
|
|
|
#if defined(__CYGWIN__)
|
|
#if __POSIX_VISIBLE >= 200809
|
|
#include <sys/ucontext.h>
|
|
#endif
|
|
#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 */
|