1 /* $OpenBSD: signal.h,v 1.19 2012/06/10 21:31:03 guenther Exp $ */ 2 /* $NetBSD: signal.h,v 1.8 1996/02/29 00:04:57 jtc Exp $ */ 3 4 /*- 5 * Copyright (c) 1991, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)signal.h 8.3 (Berkeley) 3/30/94 33 */ 34 35 #ifndef _USER_SIGNAL_H 36 #define _USER_SIGNAL_H 37 38 #include <sys/cdefs.h> 39 #include <sys/signal.h> 40 41 #if __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE 42 #include <sys/types.h> 43 #endif 44 45 __BEGIN_DECLS 46 #if __BSD_VISIBLE 47 extern __const char *__const sys_signame[_NSIG]; 48 extern __const char *__const sys_siglist[_NSIG]; 49 #endif 50 51 int raise(int); 52 #if __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE 53 #if __BSD_VISIBLE || (__XPG_VISIBLE >= 500 && __XPG_VISIBLE < 700) 54 void (*bsd_signal(int, void (*)(int)))(int); 55 #endif 56 int kill(pid_t, int); 57 int sigaction(int, const struct sigaction *__restrict, 58 struct sigaction *__restrict); 59 int sigaddset(sigset_t *, int); 60 int sigdelset(sigset_t *, int); 61 int sigemptyset(sigset_t *); 62 int sigfillset(sigset_t *); 63 int sigismember(const sigset_t *, int); 64 int sigpending(sigset_t *); 65 int sigprocmask(int, const sigset_t *__restrict, sigset_t *__restrict); 66 #if __POSIX_VISIBLE >= 199506 67 int pthread_sigmask(int, const sigset_t *__restrict, sigset_t *__restrict); 68 #endif 69 int sigsuspend(const sigset_t *); 70 71 #if !defined(_ANSI_LIBRARY) && !defined(lint) 72 73 extern int *__errno(void); 74 75 __only_inline int sigaddset(sigset_t *__set, int __signo) { 76 if (__signo <= 0 || __signo >= _NSIG) { 77 *__errno() = 22; /* EINVAL */ 78 return -1; 79 } 80 *__set |= (1U << ((__signo)-1)); /* sigmask(__signo) */ 81 return (0); 82 } 83 84 __only_inline int sigdelset(sigset_t *__set, int __signo) { 85 if (__signo <= 0 || __signo >= _NSIG) { 86 *__errno() = 22; /* EINVAL */ 87 return -1; 88 } 89 *__set &= ~(1U << ((__signo)-1)); /* sigmask(__signo) */ 90 return (0); 91 } 92 93 __only_inline int sigismember(const sigset_t *__set, int __signo) { 94 if (__signo <= 0 || __signo >= _NSIG) { 95 *__errno() = 22; /* EINVAL */ 96 return -1; 97 } 98 return ((*__set & (1U << ((__signo)-1))) != 0); 99 } 100 #endif /* !_ANSI_LIBRARY && !lint */ 101 102 /* List definitions after function declarations, or Reiser cpp gets upset. */ 103 #define sigemptyset(set) (*(set) = 0, 0) 104 #define sigfillset(set) (*(set) = ~(sigset_t)0, 0) 105 106 #if __BSD_VISIBLE || __XPG_VISIBLE >= 420 107 int killpg(pid_t, int); 108 int siginterrupt(int, int); 109 int sigpause(int); 110 int sigaltstack(const struct sigaltstack *__restrict, 111 struct sigaltstack *__restrict); 112 #if __BSD_VISIBLE 113 int sigblock(int); 114 int sigreturn(struct sigcontext *); 115 int sigsetmask(int); 116 int sigvec(int, struct sigvec *, struct sigvec *); 117 #endif 118 #endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 420 */ 119 #if __BSD_VISIBLE || __POSIX_VISIBLE >= 199309 || __XPG_VISIBLE >= 500 120 int sigwait(const sigset_t *__restrict, int *__restrict); 121 #endif 122 #if __BSD_VISIBLE || __POSIX_VISIBLE >= 200809 123 void psignal(unsigned int, const char *); 124 #endif 125 #endif /* __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE */ 126 __END_DECLS 127 128 #endif /* !_USER_SIGNAL_H */ 129