Source to sys/signal.h
/*
* Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)signal.h 7.16 (Berkeley) 3/17/91
*/
#ifndef _SIGNAL_H_
#define _SIGNAL_H_
#define NSIG 32 /* counting 0; could be 33 (mask is 1-32) */
#ifndef _POSIX_SOURCE
#include <machine/trap.h> /* codes for SIGILL, SIGFPE */
#endif /* _POSIX_SOURCE */
#define SIGHUP 1 /* hangup */
#define SIGINT 2 /* interrupt */
#define SIGQUIT 3 /* quit */
#define SIGILL 4 /* illegal instruction (not reset when caught) */
#ifndef _POSIX_SOURCE
#define SIGTRAP 5 /* trace trap (not reset when caught) */
#endif
#define SIGABRT 6 /* abort() */
#ifndef _POSIX_SOURCE
#define SIGIOT SIGABRT /* compatibility */
#define SIGEMT 7 /* EMT instruction */
#endif
#define SIGFPE 8 /* floating point exception */
#define SIGKILL 9 /* kill (cannot be caught or ignored) */
#ifndef _POSIX_SOURCE
#define SIGBUS 10 /* bus error */
#endif
#define SIGSEGV 11 /* segmentation violation */
#ifndef _POSIX_SOURCE
#define SIGSYS 12 /* bad argument to system call */
#endif
#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 */
#ifndef _POSIX_SOURCE
#define SIGURG 16 /* urgent condition on IO channel */
#endif
#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 SIGTTIN 21 /* to readers pgrp upon background tty read */
#define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
#ifndef _POSIX_SOURCE
#define SIGIO 23 /* input/output possible signal */
#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 size changes */
#define SIGINFO 29 /* information request */
#endif
#define SIGUSR1 30 /* user defined signal 1 */
#define SIGUSR2 31 /* user defined signal 2 */
#include <sys/cdefs.h>
#ifndef _POSIX_SOURCE
typedef void (*sig_t) __P((int));
#endif
typedef unsigned int sigset_t;
__BEGIN_DECLS
int sigaddset __P((sigset_t *, int));
int sigdelset __P((sigset_t *, int));
int sigemptyset __P((sigset_t *));
int sigfillset __P((sigset_t *));
int sigismember __P((const sigset_t *, int));
__END_DECLS
#define sigemptyset(set) ( *(set) = 0 )
#define sigfillset(set) ( *(set) = ~(sigset_t)0, 0 )
#define sigaddset(set, signo) ( *(set) |= 1 << ((signo) - 1), 0)
#define sigdelset(set, signo) ( *(set) &= ~(1 << ((signo) - 1)), 0)
#define sigismember(set, signo) ( (*(set) & (1 << ((signo) - 1))) != 0)
/*
* Signal vector "template" used in sigaction call.
*/
struct sigaction {
void (*sa_handler)(); /* signal handler */
sigset_t sa_mask; /* signal mask to apply */
int sa_flags; /* see signal options below */
};
#ifndef _POSIX_SOURCE
#define SA_ONSTACK 0x0001 /* take signal on signal stack */
#define SA_RESTART 0x0002 /* do not restart system on signal return */
#endif
#define SA_NOCLDSTOP 0x0004 /* do not generate SIGCHLD on child stop */
/*
* Flags for sigprocmask:
*/
#define SIG_BLOCK 1 /* block specified signal set */
#define SIG_UNBLOCK 2 /* unblock specified signal set */
#define SIG_SETMASK 3 /* set specified signal set */
#ifndef _POSIX_SOURCE
/*
* 4.3 compatibility:
* Signal vector "template" used in sigvec call.
*/
struct sigvec {
void (*sv_handler)(); /* signal handler */
int sv_mask; /* signal mask to apply */
int sv_flags; /* see signal options below */
};
#define SV_ONSTACK SA_ONSTACK
#define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */
#define sv_onstack sv_flags /* isn't compatibility wonderful! */
/*
* Structure used in sigaltstack call.
*/
struct sigaltstack {
char *ss_base; /* signal stack base */
int ss_len; /* signal stack length */
int ss_onstack; /* current status */
};
/*
* Structure used in sigstack call.
*/
struct sigstack {
char *ss_sp; /* signal stack pointer */
int ss_onstack; /* current status */
};
/*
* Information pushed on stack when a signal is delivered.
* This is used by the kernel to restore state following
* execution of the signal handler. It is also made available
* to the handler to allow it to restore state properly if
* a non-standard exit is performed.
*/
struct sigcontext {
int sc_onstack; /* sigstack state to restore */
int sc_mask; /* signal mask to restore */
int sc_sp; /* sp to restore */
int sc_fp; /* fp to restore */
int sc_ap; /* ap to restore */
int sc_pc; /* pc to restore */
int sc_ps; /* psl to restore */
};
/*
* Macro for converting signal number to a mask suitable for
* sigblock().
*/
#define sigmask(m) (1 << ((m)-1))
#define BADSIG (void (*)())-1
#endif /* _POSIX_SOURCE */
#define SIG_DFL (void (*)())0
#define SIG_IGN (void (*)())1
#ifndef KERNEL
#include <sys/types.h>
__BEGIN_DECLS
void (*signal __P((int, void (*) __P((int))))) __P((int));
int raise __P((int));
#ifndef _ANSI_SOURCE
int kill __P((pid_t, int));
int sigaction __P((int, const struct sigaction *, struct sigaction *));
int sigpending __P((sigset_t *));
int sigprocmask __P((int, const sigset_t *, sigset_t *));
int sigsuspend __P((const sigset_t *));
#endif /* !_ANSI_SOURCE */
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
int killpg __P((pid_t, int));
void psignal __P((unsigned, const char *));
int sigblock __P((int));
int siginterrupt __P((int, int));
int sigpause __P((int));
int sigreturn __P((struct sigcontext *));
int sigsetmask __P((int));
int sigstack __P((const struct sigstack *, struct sigstack *));
int sigvec __P((int, struct sigvec *, struct sigvec *));
#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
__END_DECLS
#endif /* !KERNEL */
#endif /* !_SIGNAL_H_ */