1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1991, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)signal.h	8.3 (Berkeley) 3/30/94
32 * $FreeBSD$
33 */
34
35#ifndef _SIGNAL_H_
36#define	_SIGNAL_H_
37
38#include <sys/cdefs.h>
39#include <sys/_types.h>
40#include <sys/signal.h>
41#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
42#include <machine/ucontext.h>
43#include <sys/_ucontext.h>
44#endif
45
46__NULLABILITY_PRAGMA_PUSH
47
48#if __BSD_VISIBLE
49/*
50 * XXX should enlarge these, if only to give empty names instead of bounds
51 * errors for large signal numbers.
52 */
53extern const char * const sys_signame[NSIG];
54extern const char * const sys_siglist[NSIG];
55extern const int sys_nsig;
56#endif
57
58#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
59#ifndef _PID_T_DECLARED
60typedef	__pid_t		pid_t;
61#define	_PID_T_DECLARED
62#endif
63#endif
64
65#if __POSIX_VISIBLE || __XSI_VISIBLE
66struct pthread;		/* XXX */
67typedef struct pthread *__pthread_t;
68#if !defined(_PTHREAD_T_DECLARED) && __POSIX_VISIBLE >= 200809
69typedef __pthread_t pthread_t;
70#define	_PTHREAD_T_DECLARED
71#endif
72#endif /* __POSIX_VISIBLE || __XSI_VISIBLE */
73
74__BEGIN_DECLS
75int	raise(int);
76
77#if __POSIX_VISIBLE || __XSI_VISIBLE
78int	kill(__pid_t, int);
79int	pthread_kill(__pthread_t, int);
80int	pthread_sigmask(int, const __sigset_t * __restrict,
81	    __sigset_t * __restrict);
82int	sigaction(int, const struct sigaction * __restrict,
83	    struct sigaction * __restrict);
84int	sigaddset(sigset_t *, int);
85int	sigdelset(sigset_t *, int);
86int	sigemptyset(sigset_t *);
87int	sigfillset(sigset_t *);
88int	sigismember(const sigset_t *, int);
89int	sigpending(sigset_t * _Nonnull);
90int	sigprocmask(int, const sigset_t * __restrict, sigset_t * __restrict);
91int	sigsuspend(const sigset_t * _Nonnull);
92int	sigwait(const sigset_t * _Nonnull __restrict,
93	    int * _Nonnull __restrict);
94#endif
95
96#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE >= 600
97int	sigqueue(__pid_t, int, const union sigval);
98
99struct timespec;
100int	sigtimedwait(const sigset_t * __restrict, siginfo_t * __restrict,
101	    const struct timespec * __restrict);
102int	sigwaitinfo(const sigset_t * __restrict, siginfo_t * __restrict);
103#endif
104
105#if __XSI_VISIBLE
106int	killpg(__pid_t, int);
107int	sigaltstack(const stack_t * __restrict, stack_t * __restrict);
108int	sighold(int);
109int	sigignore(int);
110int	sigpause(int);
111int	sigrelse(int);
112void	(* _Nullable sigset(int, void (* _Nullable)(int)))(int);
113int	xsi_sigpause(int);
114#endif
115
116#if __XSI_VISIBLE >= 600
117int	siginterrupt(int, int);
118#endif
119
120#if __POSIX_VISIBLE >= 200809
121void	psignal(int, const char *);
122#endif
123
124#if __BSD_VISIBLE
125int	sigandset(sigset_t *dest, const sigset_t *left, const sigset_t *right);
126int	sigblock(int);
127int	sigisemptyset(const sigset_t *set);
128int	sigorset(sigset_t *dest, const sigset_t *left, const sigset_t *right);
129int	sigreturn(const struct __ucontext *);
130int	sigsetmask(int);
131int	sigstack(const struct sigstack *, struct sigstack *);
132int	sigvec(int, struct sigvec *, struct sigvec *);
133#endif
134__END_DECLS
135__NULLABILITY_PRAGMA_POP
136
137#endif /* !_SIGNAL_H_ */
138