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 #if __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE 44 #define SIG2STR_MAX 32 /* size of buffer required for sig2str() */ 45 #endif 46 47 __NULLABILITY_PRAGMA_PUSH 48 49 #if __BSD_VISIBLE 50 /* 51 * XXX should enlarge these, if only to give empty names instead of bounds 52 * errors for large signal numbers. 53 */ 54 extern const char * const sys_signame[NSIG]; 55 extern const char * const sys_siglist[NSIG]; 56 extern const int sys_nsig; 57 #endif 58 59 #if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE 60 #ifndef _PID_T_DECLARED 61 typedef __pid_t pid_t; 62 #define _PID_T_DECLARED 63 #endif 64 #endif 65 66 #if __POSIX_VISIBLE || __XSI_VISIBLE 67 struct pthread; /* XXX */ 68 typedef struct pthread *__pthread_t; 69 #if !defined(_PTHREAD_T_DECLARED) && __POSIX_VISIBLE >= 200809 70 typedef __pthread_t pthread_t; 71 #define _PTHREAD_T_DECLARED 72 #endif 73 #endif /* __POSIX_VISIBLE || __XSI_VISIBLE */ 74 75 #if !defined(_STANDALONE) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 76 #include <ssp/signal.h> 77 #endif 78 79 __BEGIN_DECLS 80 int raise(int); 81 82 #if __POSIX_VISIBLE || __XSI_VISIBLE 83 int kill(__pid_t, int); 84 int pthread_kill(__pthread_t, int); 85 int pthread_sigmask(int, const __sigset_t * __restrict, 86 __sigset_t * __restrict); 87 int sigaction(int, const struct sigaction * __restrict, 88 struct sigaction * __restrict); 89 int sigaddset(sigset_t *, int); 90 int sigdelset(sigset_t *, int); 91 int sigemptyset(sigset_t *); 92 int sigfillset(sigset_t *); 93 int sigismember(const sigset_t *, int); 94 int sigpending(sigset_t * _Nonnull); 95 int sigprocmask(int, const sigset_t * __restrict, sigset_t * __restrict); 96 int sigsuspend(const sigset_t * _Nonnull); 97 int sigwait(const sigset_t * _Nonnull __restrict, 98 int * _Nonnull __restrict); 99 #endif 100 101 #if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE >= 600 102 int sigqueue(__pid_t, int, const union sigval); 103 104 struct timespec; 105 int sigtimedwait(const sigset_t * __restrict, siginfo_t * __restrict, 106 const struct timespec * __restrict); 107 int sigwaitinfo(const sigset_t * __restrict, siginfo_t * __restrict); 108 #endif 109 110 #if __XSI_VISIBLE 111 int killpg(__pid_t, int); 112 int sigaltstack(const stack_t * __restrict, stack_t * __restrict); 113 int sighold(int); 114 int sigignore(int); 115 int sigpause(int); 116 int sigrelse(int); 117 void (* _Nullable sigset(int, void (* _Nullable)(int)))(int); 118 int xsi_sigpause(int); 119 #endif 120 121 #if __XSI_VISIBLE >= 600 122 int siginterrupt(int, int); 123 #endif 124 125 #if __POSIX_VISIBLE >= 200809 126 void psiginfo(const siginfo_t *, const char *); 127 void psignal(int, const char *); 128 #endif 129 130 #if __POSIX_VISIBLE >= 202405 || __BSD_VISIBLE 131 int sig2str(int, char *); 132 int str2sig(const char * __restrict, int * __restrict); 133 #endif 134 135 #if __BSD_VISIBLE 136 int sigandset(sigset_t *dest, const sigset_t *left, const sigset_t *right); 137 int sigblock(int); 138 int sigisemptyset(const sigset_t *set); 139 int sigorset(sigset_t *dest, const sigset_t *left, const sigset_t *right); 140 int sigreturn(const struct __ucontext *); 141 int sigsetmask(int); 142 int sigstack(const struct sigstack *, struct sigstack *); 143 int sigvec(int, struct sigvec *, struct sigvec *); 144 #endif 145 __END_DECLS 146 __NULLABILITY_PRAGMA_POP 147 148 #endif /* !_SIGNAL_H_ */ 149