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signal.h
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signal.h
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/* $NetBSD: signal.h,v 1.13 1994/06/29 06:45:21 cgd Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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 8.2 (Berkeley) 1/21/94
*/
#ifndef _SYS_SIGNAL_H_
#define _SYS_SIGNAL_H_
#define NSIG 32 /* counting 0; could be 33 (mask is 1-32) */
#ifndef _ANSI_SOURCE
#include <machine/signal.h> /* sigcontext; codes for SIGILL, SIGFPE */
#endif
#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 */
#if defined(_ANSI_SOURCE) || defined(__cplusplus)
/*
* Language spec sez we must list exactly one parameter, even though we
* actually supply three. Ugh!
*/
#define SIG_DFL (void (*)(int))0
#define SIG_IGN (void (*)(int))1
#define SIG_ERR (void (*)(int))-1
#else
#define SIG_DFL (void (*)())0
#define SIG_IGN (void (*)())1
#define SIG_ERR (void (*)())-1
#endif
#ifndef _ANSI_SOURCE
typedef unsigned int sigset_t;
/*
* 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 /* restart system on signal return */
#define SA_DISABLE 0x0004 /* disable taking signals on alternate stack */
#ifdef COMPAT_SUNOS
#define SA_USERTRAMP 0x0100 /* do not bounce off kernel's sigtramp */
#endif
#endif
#define SA_NOCLDSTOP 0x0008 /* 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
#ifndef KERNEL
#include <sys/cdefs.h>
#endif
typedef void (*sig_t) __P((int)); /* type of signal function */
/*
* Structure used in sigaltstack call.
*/
struct sigaltstack {
char *ss_base; /* signal stack base */
int ss_size; /* signal stack length */
int ss_flags; /* SA_DISABLE and/or SA_ONSTACK */
};
#define MINSIGSTKSZ 8192 /* minimum allowable stack */
#define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
/*
* 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 sigstack call.
*/
struct sigstack {
char *ss_sp; /* signal stack pointer */
int ss_onstack; /* current status */
};
/*
* Macro for converting signal number to a mask suitable for
* sigblock().
*/
#define sigmask(m) (1 << ((m)-1))
#define BADSIG SIG_ERR
#endif /* !_POSIX_SOURCE */
#endif /* !_ANSI_SOURCE */
/*
* For historical reasons; programs expect signal's return value to be
* defined by <sys/signal.h>.
*/
__BEGIN_DECLS
void (*signal __P((int, void (*) __P((int))))) __P((int));
__END_DECLS
#endif /* !_SYS_SIGNAL_H_ */