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
32#ifndef _SIGNAL_H_
33#define	_SIGNAL_H_
34
35#include <sys/cdefs.h>
36#include <sys/_types.h>
37#include <sys/signal.h>
38#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
39#include <machine/ucontext.h>
40#include <sys/_ucontext.h>
41#endif
42
43__NULLABILITY_PRAGMA_PUSH
44
45#if __BSD_VISIBLE
46/*
47 * XXX should enlarge these, if only to give empty names instead of bounds
48 * errors for large signal numbers.
49 */
50extern const char * const sys_signame[NSIG];
51extern const char * const sys_siglist[NSIG];
52extern const int sys_nsig;
53#endif
54
55#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
56#ifndef _PID_T_DECLARED
57typedef	__pid_t		pid_t;
58#define	_PID_T_DECLARED
59#endif
60#endif
61
62#if __POSIX_VISIBLE || __XSI_VISIBLE
63struct pthread;		/* XXX */
64typedef struct pthread *__pthread_t;
65#if !defined(_PTHREAD_T_DECLARED) && __POSIX_VISIBLE >= 200809
66typedef __pthread_t pthread_t;
67#define	_PTHREAD_T_DECLARED
68#endif
69#endif /* __POSIX_VISIBLE || __XSI_VISIBLE */
70
71__BEGIN_DECLS
72int	raise(int);
73
74#if __POSIX_VISIBLE || __XSI_VISIBLE
75int	kill(__pid_t, int);
76int	pthread_kill(__pthread_t, int);
77int	pthread_sigmask(int, const __sigset_t * __restrict,
78	    __sigset_t * __restrict);
79int	sigaction(int, const struct sigaction * __restrict,
80	    struct sigaction * __restrict);
81int	sigaddset(sigset_t *, int);
82int	sigdelset(sigset_t *, int);
83int	sigemptyset(sigset_t *);
84int	sigfillset(sigset_t *);
85int	sigismember(const sigset_t *, int);
86int	sigpending(sigset_t * _Nonnull);
87int	sigprocmask(int, const sigset_t * __restrict, sigset_t * __restrict);
88int	sigsuspend(const sigset_t * _Nonnull);
89int	sigwait(const sigset_t * _Nonnull __restrict,
90	    int * _Nonnull __restrict);
91#endif
92
93#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE >= 600
94int	sigqueue(__pid_t, int, const union sigval);
95
96struct timespec;
97int	sigtimedwait(const sigset_t * __restrict, siginfo_t * __restrict,
98	    const struct timespec * __restrict);
99int	sigwaitinfo(const sigset_t * __restrict, siginfo_t * __restrict);
100#endif
101
102#if __XSI_VISIBLE
103int	killpg(__pid_t, int);
104int	sigaltstack(const stack_t * __restrict, stack_t * __restrict);
105int	sighold(int);
106int	sigignore(int);
107int	sigpause(int);
108int	sigrelse(int);
109void	(* _Nullable sigset(int, void (* _Nullable)(int)))(int);
110int	xsi_sigpause(int);
111#endif
112
113#if __XSI_VISIBLE >= 600
114int	siginterrupt(int, int);
115#endif
116
117#if __POSIX_VISIBLE >= 200809
118void	psignal(int, const char *);
119#endif
120
121#if __BSD_VISIBLE
122int	sigandset(sigset_t *dest, const sigset_t *left, const sigset_t *right);
123int	sigblock(int);
124int	sigisemptyset(const sigset_t *set);
125int	sigorset(sigset_t *dest, const sigset_t *left, const sigset_t *right);
126int	sigreturn(const struct __ucontext *);
127int	sigsetmask(int);
128int	sigstack(const struct sigstack *, struct sigstack *);
129int	sigvec(int, struct sigvec *, struct sigvec *);
130#endif
131__END_DECLS
132__NULLABILITY_PRAGMA_POP
133
134#endif /* !_SIGNAL_H_ */
135