[unix-history] / sys / 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.
 *
 *	from: @(#)signal.h	7.16 (Berkeley) 3/17/91
 *	$Id$
 */

#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&LTOSTOP) */
#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 void (*__sighandler_t) __P((int));
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 {
	__sighandler_t  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	SIG_ERR		((__sighandler_t) -1)
#endif	/* _POSIX_SOURCE */
  
#define	SIG_DFL		((__sighandler_t) 0)
#define	SIG_IGN		((__sighandler_t) 1)

#ifndef KERNEL
#include <sys/types.h>

__BEGIN_DECLS
/*void	(*signal __P((int, void (*) __P((int))))) __P((int));*/
__sighandler_t signal __P((int, __sighandler_t));
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_ */
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
78ed81a3	33	* from: @(#)signal.h 7.16 (Berkeley) 3/17/91
78ed81a3	34	* $Id$
15637ed4 RG	35	*/
	36
	37	#ifndef _SIGNAL_H_
	38	#define _SIGNAL_H_
	39
	40	#define NSIG 32 /* counting 0; could be 33 (mask is 1-32) */
	41
	42	#ifndef _POSIX_SOURCE
	43	#include <machine/trap.h> /* codes for SIGILL, SIGFPE */
	44	#endif /* _POSIX_SOURCE */
	45
	46	#define SIGHUP 1 /* hangup */
	47	#define SIGINT 2 /* interrupt */
	48	#define SIGQUIT 3 /* quit */
	49	#define SIGILL 4 /* illegal instruction (not reset when caught) */
	50	#ifndef _POSIX_SOURCE
	51	#define SIGTRAP 5 /* trace trap (not reset when caught) */
	52	#endif
	53	#define SIGABRT 6 /* abort() */
	54	#ifndef _POSIX_SOURCE
	55	#define SIGIOT SIGABRT /* compatibility */
	56	#define SIGEMT 7 /* EMT instruction */
	57	#endif
	58	#define SIGFPE 8 /* floating point exception */
	59	#define SIGKILL 9 /* kill (cannot be caught or ignored) */
	60	#ifndef _POSIX_SOURCE
	61	#define SIGBUS 10 /* bus error */
	62	#endif
	63	#define SIGSEGV 11 /* segmentation violation */
	64	#ifndef _POSIX_SOURCE
	65	#define SIGSYS 12 /* bad argument to system call */
	66	#endif
	67	#define SIGPIPE 13 /* write on a pipe with no one to read it */
	68	#define SIGALRM 14 /* alarm clock */
	69	#define SIGTERM 15 /* software termination signal from kill */
	70	#ifndef _POSIX_SOURCE
	71	#define SIGURG 16 /* urgent condition on IO channel */
	72	#endif
	73	#define SIGSTOP 17 /* sendable stop signal not from tty */
	74	#define SIGTSTP 18 /* stop signal from tty */
	75	#define SIGCONT 19 /* continue a stopped process */
	76	#define SIGCHLD 20 /* to parent on child stop or exit */
	77	#define SIGTTIN 21 /* to readers pgrp upon background tty read */
	78	#define SIGTTOU 22 /* like TTIN for output if (tp->t_local&LTOSTOP) */
	79	#ifndef _POSIX_SOURCE
	80	#define SIGIO 23 /* input/output possible signal */
	81	#define SIGXCPU 24 /* exceeded CPU time limit */
	82	#define SIGXFSZ 25 /* exceeded file size limit */
	83	#define SIGVTALRM 26 /* virtual time alarm */
	84	#define SIGPROF 27 /* profiling time alarm */
	85	#define SIGWINCH 28 /* window size changes */
	86	#define SIGINFO 29 /* information request */
	87	#endif
	88	#define SIGUSR1 30 /* user defined signal 1 */
	89	#define SIGUSR2 31 /* user defined signal 2 */
	90
	91	#include <sys/cdefs.h>
	92
	93	#ifndef _POSIX_SOURCE
	94	typedef void (*sig_t) __P((int));
	95	#endif
	96
	97	typedef void (*__sighandler_t) __P((int));
	98	typedef unsigned int sigset_t;
99
100	__BEGIN_DECLS
101	int sigaddset __P((sigset_t *, int));
102	int sigdelset __P((sigset_t *, int));
103	int sigemptyset __P((sigset_t *));
104	int sigfillset __P((sigset_t *));
105	int sigismember __P((const sigset_t *, int));
106	__END_DECLS
107
108	#define sigemptyset(set) ( *(set) = 0 )
109	#define sigfillset(set) ( *(set) = ~(sigset_t)0, 0 )
110	#define sigaddset(set, signo) ( *(set) \|= 1 << ((signo) - 1), 0)
111	#define sigdelset(set, signo) ( *(set) &= ~(1 << ((signo) - 1)), 0)
112	#define sigismember(set, signo) ( (*(set) & (1 << ((signo) - 1))) != 0)
113
114	/*
115	* Signal vector "template" used in sigaction call.
116	*/
117	struct sigaction {
118	__sighandler_t sa_handler; /* signal handler */
119	sigset_t sa_mask; /* signal mask to apply */
120	int sa_flags; /* see signal options below */
121	};
122	#ifndef _POSIX_SOURCE
123	#define SA_ONSTACK 0x0001 /* take signal on signal stack */
124	#define SA_RESTART 0x0002 /* do not restart system on signal return */
125	#endif
126	#define SA_NOCLDSTOP 0x0004 /* do not generate SIGCHLD on child stop */
127
128	/*
129	* Flags for sigprocmask:
130	*/
131	#define SIG_BLOCK 1 /* block specified signal set */
132	#define SIG_UNBLOCK 2 /* unblock specified signal set */
133	#define SIG_SETMASK 3 /* set specified signal set */
134
135	#ifndef _POSIX_SOURCE
136	/*
137	* 4.3 compatibility:
138	* Signal vector "template" used in sigvec call.
139	*/
140	struct sigvec {
141	void (sv_handler)(); / signal handler */
142	int sv_mask; /* signal mask to apply */
143	int sv_flags; /* see signal options below */
144	};
145	#define SV_ONSTACK SA_ONSTACK
146	#define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */
147	#define sv_onstack sv_flags /* isn't compatibility wonderful! */
148
149	/*
150	* Structure used in sigaltstack call.
151	*/
152	struct sigaltstack {
153	char ss_base; / signal stack base */
154	int ss_len; /* signal stack length */
155	int ss_onstack; /* current status */
156	};
157
158	/*
159	* Structure used in sigstack call.
160	*/
161	struct sigstack {
162	char ss_sp; / signal stack pointer */
163	int ss_onstack; /* current status */
164	};
165
166	/*
167	* Information pushed on stack when a signal is delivered.
168	* This is used by the kernel to restore state following
169	* execution of the signal handler. It is also made available
170	* to the handler to allow it to restore state properly if
171	* a non-standard exit is performed.
172	*/
173	struct sigcontext {
174	int sc_onstack; /* sigstack state to restore */
175	int sc_mask; /* signal mask to restore */
176	int sc_sp; /* sp to restore */
177	int sc_fp; /* fp to restore */
178	int sc_ap; /* ap to restore */
179	int sc_pc; /* pc to restore */
180	int sc_ps; /* psl to restore */
181	};
182
183	/*
184	* Macro for converting signal number to a mask suitable for
185	* sigblock().
186	*/
187	#define sigmask(m) (1 << ((m)-1))
188
78ed81a3	189	#define SIG_ERR ((__sighandler_t) -1)
15637ed4 RG	190	#endif /* _POSIX_SOURCE */
	191
	192	#define SIG_DFL ((__sighandler_t) 0)
	193	#define SIG_IGN ((__sighandler_t) 1)
	194
	195	#ifndef KERNEL
	196	#include <sys/types.h>
	197
	198	__BEGIN_DECLS
	199	/void (signal __P((int, void () __P((int))))) __P((int));/
	200	__sighandler_t signal __P((int, __sighandler_t));
	201	int raise __P((int));
	202	#ifndef _ANSI_SOURCE
	203	int kill __P((pid_t, int));
	204	int sigaction __P((int, const struct sigaction , struct sigaction ));
	205	int sigpending __P((sigset_t *));
	206	int sigprocmask __P((int, const sigset_t , sigset_t ));
	207	int sigsuspend __P((const sigset_t *));
	208	#endif /* !_ANSI_SOURCE */
	209	#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
	210	int killpg __P((pid_t, int));
	211	void psignal __P((unsigned, const char *));
	212	int sigblock __P((int));
	213	int siginterrupt __P((int, int));
	214	int sigpause __P((int));
	215	int sigreturn __P((struct sigcontext *));
	216	int sigsetmask __P((int));
	217	int sigstack __P((const struct sigstack , struct sigstack ));
	218	int sigvec __P((int, struct sigvec , struct sigvec ));
	219	#endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */
	220	__END_DECLS
	221
	222	#endif /* !KERNEL */
	223	#endif /* !_SIGNAL_H_ */