include/signal.h

   1 /*      $NetBSD: signal.h,v 1.55 2015/07/31 12:51:32 kamil 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 #include <sys/timespec.h>
 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_ */