include/signal.h

   1 /*      $NetBSD: signal.h,v 1.50.12.1 2008/11/08 21:13:13 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 int     pthread_kill(pthread_t, int);
  70 int     __libc_thr_sigsetmask(int, const sigset_t * __restrict,
  71             sigset_t * __restrict);
  72 #ifndef __LIBPTHREAD_SOURCE__
  73 #define pthread_sigmask         __libc_thr_sigsetmask
  74 #endif /* __LIBPTHREAD_SOURCE__ */
  75 #endif
  76
  77 #ifndef __LIBC12_SOURCE__
  78 int     sigaction(int, const struct sigaction * __restrict,
  79     struct sigaction * __restrict) __RENAME(__sigaction14);
  80 int     sigaddset(sigset_t *, int) __RENAME(__sigaddset14);
  81 int     sigdelset(sigset_t *, int) __RENAME(__sigdelset14);
  82 int     sigemptyset(sigset_t *) __RENAME(__sigemptyset14);
  83 int     sigfillset(sigset_t *) __RENAME(__sigfillset14);
  84 int     sigismember(const sigset_t *, int) __RENAME(__sigismember14);
  85 int     sigpending(sigset_t *) __RENAME(__sigpending14);
  86 int     sigprocmask(int, const sigset_t * __restrict, sigset_t * __restrict)
  87     __RENAME(__sigprocmask14);
  88 int     sigsuspend(const sigset_t *) __RENAME(__sigsuspend14);
  89
  90 #if (defined(__GNUC__) && defined(__STDC__)) || defined(_SIGINLINE)
  91
  92 /* note: this appears in both errno.h and signal.h */
  93 #ifndef __errno
  94 int *__errno(void);
  95 #define __errno __errno
  96 #endif
  97
  98 /* the same as "errno" - but signal.h is not allowed to define that */
  99 #ifndef ___errno
 100 #define ___errno (*__errno())
 101 #endif
 102
 103 #ifndef _SIGINLINE
 104 #define _SIGINLINE extern __inline
 105 #endif
 106
 107 _SIGINLINE int
 108 sigaddset(sigset_t *set, int signo)
 109 {
 110         if (signo <= 0 || signo >= _NSIG) {
 111                 ___errno = 22;                  /* EINVAL */
 112                 return (-1);
 113         }
 114         __sigaddset(set, signo);
 115         return (0);
 116 }
 117
 118 _SIGINLINE int
 119 sigdelset(sigset_t *set, int signo)
 120 {
 121         if (signo <= 0 || signo >= _NSIG) {
 122                 ___errno = 22;                  /* EINVAL */
 123                 return (-1);
 124         }
 125         __sigdelset(set, signo);
 126         return (0);
 127 }
 128
 129 _SIGINLINE int
 130 sigismember(const sigset_t *set, int signo)
 131 {
 132         if (signo <= 0 || signo >= _NSIG) {
 133                 ___errno = 22;                  /* EINVAL */
 134                 return (-1);
 135         }
 136         return (__sigismember(set, signo));
 137 }
 138
 139 _SIGINLINE int
 140 sigemptyset(sigset_t *set)
 141 {
 142         __sigemptyset(set);
 143         return (0);
 144 }
 145
 146 _SIGINLINE int
 147 sigfillset(sigset_t *set)
 148 {
 149         __sigfillset(set);
 150         return (0);
 151 }
 152 #endif /* (__GNUC__ && __STDC__) || _LIBC */
 153 #endif /* !__LIBC12_SOURCE__ */
 154
 155 /*
 156  * X/Open CAE Specification Issue 4 Version 2
 157  */
 158 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
 159     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
 160 int     killpg(pid_t, int);
 161 int     siginterrupt(int, int);
 162 int     sigstack(const struct sigstack *, struct sigstack *);
 163 #ifndef __LIBC12_SOURCE__
 164 int     sigaltstack(const stack_t * __restrict, stack_t * __restrict)
 165     __RENAME(__sigaltstack14);
 166 #endif
 167 int     sighold(int);
 168 int     sigignore(int);
 169 int     sigpause(int);
 170 int     sigrelse(int);
 171 void    (*sigset (int, void (*)(int)))(int);
 172 #endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
 173
 174
 175 /*
 176  * X/Open CAE Specification Issue 5; IEEE Std 1003.1b-1993 (POSIX)
 177  */
 178 #if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
 179     defined(_NETBSD_SOURCE)
 180 int     sigwait (const sigset_t * __restrict, int * __restrict);
 181 int     sigwaitinfo(const sigset_t * __restrict, siginfo_t * __restrict);
 182
 183 #ifndef __LIBC12_SOURCE__
 184 struct timespec;
 185 int     sigtimedwait(const sigset_t * __restrict,
 186     siginfo_t * __restrict, const struct timespec * __restrict)
 187     __RENAME(__sigtimedwait50);
 188 int     __sigtimedwait(const sigset_t * __restrict,
 189     siginfo_t * __restrict, struct timespec * __restrict)
 190     __RENAME(____sigtimedwait50);
 191 #endif
 192 #endif /* _POSIX_C_SOURCE >= 200112 || _XOPEN_SOURCE_EXTENDED || ... */
 193
 194
 195 #if defined(_NETBSD_SOURCE)
 196 #ifndef __PSIGNAL_DECLARED
 197 #define __PSIGNAL_DECLARED
 198 /* also in unistd.h */
 199 void    psignal(unsigned int, const char *);
 200 #endif /* __PSIGNAL_DECLARED */
 201 int     sigblock(int);
 202 int     sigsetmask(int);
 203 #endif /* _NETBSD_SOURCE */
 204
 205 #endif  /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
 206 __END_DECLS
 207
 208 #endif  /* !_SIGNAL_H_ */