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signal.h
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signal.h
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/* $NetBSD: signal.h,v 1.60.4.2 2008/03/17 09:15:47 yamt 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. 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 8.4 (Berkeley) 5/4/95
*/
#ifndef _SYS_SIGNAL_H_
#define _SYS_SIGNAL_H_
#include <sys/featuretest.h>
#include <sys/sigtypes.h>
#define _NSIG 64
#if defined(_NETBSD_SOURCE)
#define NSIG _NSIG
#endif /* _NETBSD_SOURCE */
#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 SIGABRT 6 /* abort() */
#define SIGIOT SIGABRT /* compatibility */
#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 */
#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 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 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 */
#define SIGUSR1 30 /* user defined signal 1 */
#define SIGUSR2 31 /* user defined signal 2 */
#define SIGPWR 32 /* power fail/restart (not reset when caught) */
#ifdef _KERNEL
#define SIGRTMIN 33 /* Kernel only; not exposed to userland yet */
#define SIGRTMAX 63 /* Kernel only; not exposed to userland yet */
#endif
#ifndef _KERNEL
#include <sys/cdefs.h>
#endif
#define SIG_DFL ((void (*)(int)) 0)
#define SIG_IGN ((void (*)(int)) 1)
#define SIG_ERR ((void (*)(int)) -1)
#define SIG_HOLD ((void (*)(int)) 3)
#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
defined(_NETBSD_SOURCE)
#ifdef _KERNEL
#define sigaddset(s, n) __sigaddset(s, n)
#define sigdelset(s, n) __sigdelset(s, n)
#define sigismember(s, n) __sigismember(s, n)
#define sigemptyset(s) __sigemptyset(s)
#define sigfillset(s) __sigfillset(s)
#define sigplusset(s, t) __sigplusset(s, t)
#define sigminusset(s, t) __sigminusset(s, t)
#endif /* _KERNEL */
#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
defined(_NETBSD_SOURCE)
#include <sys/siginfo.h>
#endif
#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
(_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
#include <sys/ucontext.h>
#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
/*
* Signal vector "template" used in sigaction call.
*/
struct sigaction {
union {
void (*_sa_handler)(int);
#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
defined(_NETBSD_SOURCE)
void (*_sa_sigaction)(int, siginfo_t *, void *);
#endif
} _sa_u; /* signal handler */
sigset_t sa_mask; /* signal mask to apply */
int sa_flags; /* see signal options below */
};
#define sa_handler _sa_u._sa_handler
#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
defined(_NETBSD_SOURCE)
#define sa_sigaction _sa_u._sa_sigaction
#endif
#include <machine/signal.h> /* sigcontext; codes for SIGILL, SIGFPE */
#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
(_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
#define SA_ONSTACK 0x0001 /* take signal on signal stack */
#define SA_RESTART 0x0002 /* restart system call on signal return */
#define SA_RESETHAND 0x0004 /* reset to SIG_DFL when taking signal */
#define SA_NODEFER 0x0010 /* don't mask the signal we're delivering */
#endif /* _XOPEN_SOURCE_EXTENDED || XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
/* Only valid for SIGCHLD. */
#define SA_NOCLDSTOP 0x0008 /* do not generate SIGCHLD on child stop */
#define SA_NOCLDWAIT 0x0020 /* do not generate zombies on unwaited child */
#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
defined(_NETBSD_SOURCE)
#define SA_SIGINFO 0x0040 /* take sa_sigaction handler */
#endif /* (_POSIX_C_SOURCE - 0) >= 199309L || ... */
#if defined(_NETBSD_SOURCE)
#define SA_NOKERNINFO 0x0080 /* siginfo does not print kernel info on tty */
#endif /*_NETBSD_SOURCE */
#ifdef _KERNEL
#define SA_ALLBITS 0x00ff
#endif
/*
* 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 */
#if defined(_NETBSD_SOURCE)
typedef void (*sig_t)(int); /* type of signal function */
#endif
#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
(_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
/*
* Flags used with stack_t/struct sigaltstack.
*/
#define SS_ONSTACK 0x0001 /* take signals on alternate stack */
#define SS_DISABLE 0x0004 /* disable taking signals on alternate stack */
#ifdef _KERNEL
#define SS_ALLBITS 0x0005
#endif
#define MINSIGSTKSZ 8192 /* minimum allowable stack */
#define SIGSTKSZ (MINSIGSTKSZ + 32768) /* recommended stack size */
#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
(_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
/*
* Structure used in sigstack call.
*/
struct sigstack {
void *ss_sp; /* signal stack pointer */
int ss_onstack; /* current status */
};
#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
#if defined(_NETBSD_SOURCE) && !defined(_KERNEL)
/*
* Macro for converting signal number to a mask suitable for
* sigblock().
*/
#define sigmask(n) __sigmask(n)
#define BADSIG SIG_ERR
#endif /* _NETBSD_SOURCE */
#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
defined(_NETBSD_SOURCE)
struct sigevent {
int sigev_notify;
int sigev_signo;
union sigval sigev_value;
void (*sigev_notify_function)(union sigval *);
void /* pthread_attr_t */ *sigev_notify_attributes;
};
#define SIGEV_NONE 0
#define SIGEV_SIGNAL 1
#define SIGEV_THREAD 2
#define SIGEV_SA 3
#endif /* (_POSIX_C_SOURCE - 0) >= 199309L || ... */
#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
/*
* For historical reasons; programs expect signal's return value to be
* defined by <sys/signal.h>.
*/
__BEGIN_DECLS
void (*signal(int, void (*)(int)))(int);
__END_DECLS
#endif /* !_SYS_SIGNAL_H_ */