www.pudn.com > tcpipsim.rar > signal.h

/* 
 * 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 	/* 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  
#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 . 
 */ 
__BEGIN_DECLS 
void	(*signal __P((int, void (*) __P((int))))) __P((int)); 
__END_DECLS 
 
void gsignal(int pgid, int signum); 
void psignal(register struct proc *p, register int signum); 
 
#endif	/* !_SYS_SIGNAL_H_ */