include/signal.h

   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 #ifndef __minix
  66 #if (_POSIX_C_SOURCE - 0L) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
  67     defined(_NETBSD_SOURCE)
  68 int     pthread_sigmask(int, const sigset_t * __restrict,
  69             sigset_t * __restrict);
  70 int     pthread_kill(pthread_t, int);
  71 int     __libc_thr_sigsetmask(int, const sigset_t * __restrict,
  72             sigset_t * __restrict);
  73 #ifndef __LIBPTHREAD_SOURCE__
  74 #define pthread_sigmask         __libc_thr_sigsetmask
  75 #endif /* __LIBPTHREAD_SOURCE__ */
  76 #endif
  77 #endif /* __minix */
  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 #define sigaddset(set, sig)     __sigaddset((set), (sig))
  84 #define sigdelset(set, sig)     __sigdelset((set), (sig))
  85 #define sigemptyset(set)        __sigemptyset((set))
  86 #define sigfillset(set)         __sigfillset((set))
  87 #define sigismember(set, sig)   __sigismember((set), (sig))
  88 #else
  89 int     sigaddset(sigset_t *, int) __RENAME(__sigaddset14);
  90 int     sigdelset(sigset_t *, int) __RENAME(__sigdelset14);
  91 int     sigemptyset(sigset_t *) __RENAME(__sigemptyset14);
  92 int     sigfillset(sigset_t *) __RENAME(__sigfillset14);
  93 int     sigismember(const sigset_t *, int) __RENAME(__sigismember14);
  94 #endif
  95 int     sigpending(sigset_t *) __RENAME(__sigpending14);
  96 int     sigprocmask(int, const sigset_t * __restrict, sigset_t * __restrict)
  97     __RENAME(__sigprocmask14);
  98 int     sigsuspend(const sigset_t *) __RENAME(__sigsuspend14);
  99
 100 #if defined(__c99inline) || defined(__SIGSETOPS_BODY)
 101
 102 #if defined(__SIGSETOPS_BODY)
 103 #undef  __c99inline
 104 #define __c99inline
 105 #endif
 106
 107 /* note: this appears in both errno.h and signal.h */
 108 #ifndef __errno
 109 int *__errno(void);
 110 #define __errno __errno
 111 #endif
 112
 113 /* the same as "errno" - but signal.h is not allowed to define that */
 114 #ifndef ___errno
 115 #define ___errno (*__errno())
 116 #endif
 117
 118 #if !defined(__minix) || !defined(_SYSTEM)
 119 __c99inline int
 120 sigaddset(sigset_t *set, int signo)
 121 {
 122         if (signo <= 0 || signo >= _NSIG) {
 123                 ___errno = 22;                  /* EINVAL */
 124                 return (-1);
 125         }
 126         __sigaddset(set, signo);
 127         return (0);
 128 }
 129
 130 __c99inline int
 131 sigdelset(sigset_t *set, int signo)
 132 {
 133         if (signo <= 0 || signo >= _NSIG) {
 134                 ___errno = 22;                  /* EINVAL */
 135                 return (-1);
 136         }
 137         __sigdelset(set, signo);
 138         return (0);
 139 }
 140
 141 __c99inline int
 142 sigismember(const sigset_t *set, int signo)
 143 {
 144         if (signo <= 0 || signo >= _NSIG) {
 145                 ___errno = 22;                  /* EINVAL */
 146                 return (-1);
 147         }
 148         return (__sigismember(set, signo));
 149 }
 150
 151 __c99inline int
 152 sigemptyset(sigset_t *set)
 153 {
 154         __sigemptyset(set);
 155         return (0);
 156 }
 157
 158 __c99inline int
 159 sigfillset(sigset_t *set)
 160 {
 161         __sigfillset(set);
 162         return (0);
 163 }
 164 #endif /* !defined(__minix) || !defined(_SYSTEM) */
 165 #endif /* __c99inline */
 166 #endif /* !__LIBC12_SOURCE__ */
 167
 168 /*
 169  * X/Open CAE Specification Issue 4 Version 2
 170  */
 171 #if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
 172     (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
 173 int     killpg(pid_t, int);
 174 int     siginterrupt(int, int);
 175 #ifndef __minix
 176 int     sigstack(const struct sigstack *, struct sigstack *);
 177 #ifndef __LIBC12_SOURCE__
 178 int     sigaltstack(const stack_t * __restrict, stack_t * __restrict)
 179     __RENAME(__sigaltstack14);
 180 #endif
 181 #endif /* !__minix */
 182 int     sighold(int);
 183 int     sigignore(int);
 184 int     sigpause(int);
 185 int     sigrelse(int);
 186 void    (*sigset (int, void (*)(int)))(int);
 187 #endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
 188
 189
 190 /*
 191  * X/Open CAE Specification Issue 5; IEEE Std 1003.1b-1993 (POSIX)
 192  */
 193 #if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
 194     defined(_NETBSD_SOURCE)
 195 #ifndef __minix
 196 int     sigwait (const sigset_t * __restrict, int * __restrict);
 197 int     sigwaitinfo(const sigset_t * __restrict, siginfo_t * __restrict);
 198 #endif /* !__minix */
 199 void    psiginfo(const siginfo_t *, const char *);
 200
 201 #ifndef __minix
 202 #ifndef __LIBC12_SOURCE__
 203 struct timespec;
 204 int     sigtimedwait(const sigset_t * __restrict,
 205     siginfo_t * __restrict, const struct timespec * __restrict)
 206     __RENAME(__sigtimedwait50);
 207 int     __sigtimedwait(const sigset_t * __restrict,
 208     siginfo_t * __restrict, struct timespec * __restrict)
 209     __RENAME(____sigtimedwait50);
 210 #endif
 211 #endif /* !__minix */
 212 #endif /* _POSIX_C_SOURCE >= 200112 || _XOPEN_SOURCE_EXTENDED || ... */
 213
 214
 215 #if defined(_NETBSD_SOURCE)
 216 #ifndef __minix
 217 #ifndef __PSIGNAL_DECLARED
 218 #define __PSIGNAL_DECLARED
 219 /* also in unistd.h */
 220 void    psignal(int, const char *);
 221 #endif /* __PSIGNAL_DECLARED */
 222 #endif /* !__minix */
 223 int     sigblock(int);
 224 int     sigsetmask(int);
 225 #endif /* _NETBSD_SOURCE */
 226
 227 #endif  /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
 228 __END_DECLS
 229
 230 #endif  /* !_SIGNAL_H_ */