1 /* $NetBSD: signal.h,v 1.54 2010/08/27 08:40:38 christos Exp $ */ 2 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 */ 33 34 #ifndef _SIGNAL_H_ 35 #define _SIGNAL_H_ 36 37 #include <sys/cdefs.h> 38 #include <sys/featuretest.h> 39 40 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 41 defined(_NETBSD_SOURCE) 42 #include <sys/types.h> 43 #endif 44 45 #include <sys/signal.h> 46 47 #if defined(_NETBSD_SOURCE) 48 extern const char *const *sys_signame __RENAME(__sys_signame14); 49 #ifndef __SYS_SIGLIST_DECLARED 50 #define __SYS_SIGLIST_DECLARED 51 /* also in unistd.h */ 52 extern const char *const *sys_siglist __RENAME(__sys_siglist14); 53 #endif /* __SYS_SIGLIST_DECLARED */ 54 extern const int sys_nsig __RENAME(__sys_nsig14); 55 #endif 56 57 __BEGIN_DECLS 58 int raise(int); 59 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 60 defined(_NETBSD_SOURCE) 61 int kill(pid_t, int); 62 int __libc_sigaction14(int, const struct sigaction * __restrict, 63 struct sigaction * __restrict); 64 65 #if (_POSIX_C_SOURCE - 0L) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \ 66 defined(_NETBSD_SOURCE) 67 int pthread_sigmask(int, const sigset_t * __restrict, 68 sigset_t * __restrict); 69 #if !defined(__minix) 70 int pthread_kill(pthread_t, int); 71 #endif /* !defined(__minix) */ 72 int __libc_thr_sigsetmask(int, const sigset_t * __restrict, 73 sigset_t * __restrict); 74 #ifndef __LIBPTHREAD_SOURCE__ 75 #define pthread_sigmask __libc_thr_sigsetmask 76 #endif /* __LIBPTHREAD_SOURCE__ */ 77 #endif 78 79 #ifndef __LIBC12_SOURCE__ 80 int sigaction(int, const struct sigaction * __restrict, 81 struct sigaction * __restrict) __RENAME(__sigaction14); 82 #if defined(__minix) && !defined(_SYSTEM) 83 int sigaddset(sigset_t *, int) __RENAME(__sigaddset14); 84 int sigdelset(sigset_t *, int) __RENAME(__sigdelset14); 85 int sigemptyset(sigset_t *) __RENAME(__sigemptyset14); 86 int sigfillset(sigset_t *) __RENAME(__sigfillset14); 87 int sigismember(const sigset_t *, int) __RENAME(__sigismember14); 88 #endif /* defined(__minix) && !defined(_SYSTEM) */ 89 int sigpending(sigset_t *) __RENAME(__sigpending14); 90 int sigprocmask(int, const sigset_t * __restrict, sigset_t * __restrict) 91 __RENAME(__sigprocmask14); 92 int sigsuspend(const sigset_t *) __RENAME(__sigsuspend14); 93 94 #if defined(__c99inline) || defined(__SIGSETOPS_BODY) 95 96 #if defined(__SIGSETOPS_BODY) 97 #undef __c99inline 98 #define __c99inline 99 #endif 100 101 /* note: this appears in both errno.h and signal.h */ 102 #ifndef __errno 103 int *__errno(void); 104 #define __errno __errno 105 #endif 106 107 /* the same as "errno" - but signal.h is not allowed to define that */ 108 #ifndef ___errno 109 #define ___errno (*__errno()) 110 #endif 111 112 #if defined(__minix) && defined(_SYSTEM) 113 /* In Minix system code, use alternate versions of the signal mask 114 * manipulation functions that do not check signal numbers vs. _NSIG. 115 * _NSIG can then represent the user-visible signal set. 116 */ 117 #define sigaddset(set, sig) __sigaddset((set), (sig)) 118 #define sigdelset(set, sig) __sigdelset((set), (sig)) 119 #define sigemptyset(set) __sigemptyset((set)) 120 #define sigfillset(set) __sigfillset((set)) 121 #define sigismember(set, sig) __sigismember((set), (sig)) 122 #else 123 __c99inline int 124 sigaddset(sigset_t *set, int signo) 125 { 126 if (signo <= 0 || signo >= _NSIG) { 127 ___errno = 22; /* EINVAL */ 128 return (-1); 129 } 130 __sigaddset(set, signo); 131 return (0); 132 } 133 134 __c99inline int 135 sigdelset(sigset_t *set, int signo) 136 { 137 if (signo <= 0 || signo >= _NSIG) { 138 ___errno = 22; /* EINVAL */ 139 return (-1); 140 } 141 __sigdelset(set, signo); 142 return (0); 143 } 144 145 __c99inline int 146 sigismember(const sigset_t *set, int signo) 147 { 148 if (signo <= 0 || signo >= _NSIG) { 149 ___errno = 22; /* EINVAL */ 150 return (-1); 151 } 152 return (__sigismember(set, signo)); 153 } 154 155 __c99inline int 156 sigemptyset(sigset_t *set) 157 { 158 __sigemptyset(set); 159 return (0); 160 } 161 162 __c99inline int 163 sigfillset(sigset_t *set) 164 { 165 __sigfillset(set); 166 return (0); 167 } 168 #endif /* defined(__minix) && defined(_SYSTEM) */ 169 #endif /* __c99inline */ 170 #endif /* !__LIBC12_SOURCE__ */ 171 172 /* 173 * X/Open CAE Specification Issue 4 Version 2 174 */ 175 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \ 176 (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE) 177 int killpg(pid_t, int); 178 int siginterrupt(int, int); 179 int sigstack(const struct sigstack *, struct sigstack *); 180 #ifndef __LIBC12_SOURCE__ 181 int sigaltstack(const stack_t * __restrict, stack_t * __restrict) 182 __RENAME(__sigaltstack14); 183 #endif 184 int sighold(int); 185 int sigignore(int); 186 int sigpause(int); 187 int sigrelse(int); 188 void (*sigset (int, void (*)(int)))(int); 189 #endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */ 190 191 192 /* 193 * X/Open CAE Specification Issue 5; IEEE Std 1003.1b-1993 (POSIX) 194 */ 195 #if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \ 196 defined(_NETBSD_SOURCE) 197 int sigwait (const sigset_t * __restrict, int * __restrict); 198 int sigwaitinfo(const sigset_t * __restrict, siginfo_t * __restrict); 199 void psiginfo(const siginfo_t *, const char *); 200 201 #ifndef __LIBC12_SOURCE__ 202 struct timespec; 203 int sigtimedwait(const sigset_t * __restrict, 204 siginfo_t * __restrict, const struct timespec * __restrict) 205 __RENAME(__sigtimedwait50); 206 int __sigtimedwait(const sigset_t * __restrict, 207 siginfo_t * __restrict, struct timespec * __restrict) 208 __RENAME(____sigtimedwait50); 209 #endif 210 #endif /* _POSIX_C_SOURCE >= 200112 || _XOPEN_SOURCE_EXTENDED || ... */ 211 212 213 #if defined(_NETBSD_SOURCE) 214 #ifndef __PSIGNAL_DECLARED 215 #define __PSIGNAL_DECLARED 216 /* also in unistd.h */ 217 void psignal(int, const char *); 218 #endif /* __PSIGNAL_DECLARED */ 219 int sigblock(int); 220 int sigsetmask(int); 221 #endif /* _NETBSD_SOURCE */ 222 223 #endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */ 224 __END_DECLS 225 226 #endif /* !_SIGNAL_H_ */ 227