4be7a2dcf3
by the application, all NetBSD interfaces are made visible, even if some other feature-test macro (like _POSIX_C_SOURCE) is defined. <sys/featuretest.h> defined _NETBSD_SOURCE if none of _ANSI_SOURCE, _POSIX_C_SOURCE and _XOPEN_SOURCE is defined, so as to preserve existing behaviour. This has two major advantages: + Programs that require non-POSIX facilities but define _POSIX_C_SOURCE can trivially be overruled by putting -D_NETBSD_SOURCE in their CFLAGS. + It makes most of the #ifs simpler, in that they're all now ORs of the various macros, rather than having checks for (!defined(_ANSI_SOURCE) || !defined(_POSIX_C_SOURCE) || !defined(_XOPEN_SOURCE)) all over the place. I've tried not to change the semantics of the headers in any case where _NETBSD_SOURCE wasn't defined, but there were some places where the current semantics were clearly mad, and retaining them was harder than correcting them. In particular, I've mostly normalised things so that _ANSI_SOURCE gets you the smallest set of stuff, then _POSIX_C_SOURCE, _XOPEN_SOURCE and _NETBSD_SOURCE in that order. Tested by building for vax, encouraged by thorpej, and uncontested in tech-userlevel for a week.
203 lines
7.1 KiB
C
203 lines
7.1 KiB
C
/* $NetBSD: signal.h,v 1.25 2003/04/28 23:16:14 bjh21 Exp $ */
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/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)signal.h 8.3 (Berkeley) 3/30/94
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*/
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#ifndef _SIGNAL_H_
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#define _SIGNAL_H_
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#include <sys/cdefs.h>
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#include <sys/featuretest.h>
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#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
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defined(_NETBSD_SOURCE)
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#include <sys/types.h>
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#endif
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#include <sys/signal.h>
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#if defined(_NETBSD_SOURCE)
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extern __const char *__const *sys_signame __RENAME(__sys_signame14);
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#ifndef __SYS_SIGLIST_DECLARED
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#define __SYS_SIGLIST_DECLARED
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/* also in unistd.h */
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extern __const char *__const *sys_siglist __RENAME(__sys_siglist14);
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#endif /* __SYS_SIGLIST_DECLARED */
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extern __const int sys_nsig __RENAME(__sys_nsig14);
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#endif
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__BEGIN_DECLS
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int raise __P((int));
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#ifndef _ANSI_SOURCE
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int kill __P((pid_t, int));
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int pthread_sigmask __P((int, const sigset_t *, sigset_t *));
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#ifdef __LIBC12_SOURCE__
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int sigaction __P((int, const struct sigaction13 *, struct sigaction13 *));
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int __sigaction14 __P((int, const struct sigaction *, struct sigaction *));
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int __libc_sigaction14 __P((int, const struct sigaction *,
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struct sigaction *));
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int sigaddset __P((sigset13_t *, int));
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int __sigaddset14 __P((sigset_t *, int));
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int sigdelset __P((sigset13_t *, int));
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int __sigdelset14 __P((sigset_t *, int));
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int sigemptyset __P((sigset13_t *));
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int __sigemptyset14 __P((sigset_t *));
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int sigfillset __P((sigset13_t *));
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int __sigfillset14 __P((sigset_t *));
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int sigismember __P((const sigset13_t *, int));
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int __sigismember14 __P((const sigset_t *, int));
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int sigpending __P((sigset13_t *));
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int __sigpending14 __P((sigset_t *));
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int sigprocmask __P((int, const sigset13_t *, sigset13_t *));
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int __sigprocmask14 __P((int, const sigset_t *, sigset_t *));
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int sigsuspend __P((const sigset13_t *));
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int __sigsuspend14 __P((const sigset_t *));
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#else /* !__LIBC12_SOURCE__ */
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int sigaction __P((int, const struct sigaction *, struct sigaction *)) __RENAME(__sigaction14);
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int sigaddset __P((sigset_t *, int)) __RENAME(__sigaddset14);
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int sigdelset __P((sigset_t *, int)) __RENAME(__sigdelset14);
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int sigemptyset __P((sigset_t *)) __RENAME(__sigemptyset14);
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int sigfillset __P((sigset_t *)) __RENAME(__sigfillset14);
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int sigismember __P((const sigset_t *, int)) __RENAME(__sigismember14);
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int sigpending __P((sigset_t *)) __RENAME(__sigpending14);
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int sigprocmask __P((int, const sigset_t *, sigset_t *)) __RENAME(__sigprocmask14);
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int sigsuspend __P((const sigset_t *)) __RENAME(__sigsuspend14);
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#if defined(__GNUC__) && defined(__STDC__)
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#ifndef errno
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int *__errno __P((void));
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#define errno (*__errno())
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#endif
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extern __inline int
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sigaddset(sigset_t *set, int signo)
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{
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if (signo <= 0 || signo >= _NSIG) {
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errno = 22; /* EINVAL */
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return (-1);
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}
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__sigaddset(set, signo);
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return (0);
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}
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extern __inline int
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sigdelset(sigset_t *set, int signo)
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{
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if (signo <= 0 || signo >= _NSIG) {
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errno = 22; /* EINVAL */
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return (-1);
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}
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__sigdelset(set, signo);
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return (0);
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}
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extern __inline int
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sigismember(const sigset_t *set, int signo)
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{
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if (signo <= 0 || signo >= _NSIG) {
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errno = 22; /* EINVAL */
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return (-1);
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}
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return (__sigismember(set, signo));
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}
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#endif /* __GNUC__ && __STDC__ */
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/* List definitions after function declarations, or Reiser cpp gets upset. */
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#define sigemptyset(set) (__sigemptyset(set), /*LINTED*/0)
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#define sigfillset(set) (__sigfillset(set), /*LINTED*/ 0)
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#endif /* !__LIBC12_SOURCE__ */
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/*
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* X/Open CAE Specification Issue 5 Version 2
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*/
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#if (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
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(_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
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int killpg __P((pid_t, int));
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int siginterrupt __P((int, int));
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int sigstack __P((const struct sigstack *, struct sigstack *));
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#ifdef __LIBC12_SOURCE__
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int sigaltstack __P((const struct sigaltstack13 *, struct sigaltstack13 *));
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int __sigaltstack14 __P((const stack_t *, stack_t *));
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#else
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int sigaltstack __P((const stack_t *, stack_t *)) __RENAME(__sigaltstack14);
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#endif
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#endif /* _XOPEN_SOURCE_EXTENDED || _XOPEN_SOURCE >= 500 || _NETBSD_SOURCE */
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/*
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* X/Open CAE Specification Issue 5 Version 2; IEEE Std 1003.1-2001 (POSIX)
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*/
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#if (_POSIX_C_SOURCE - 0) >= 200112L || \
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(defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
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(_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
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int sighold __P((int));
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int sigignore __P((int));
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int sigpause __P((int));
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int sigrelse __P((int));
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void (*sigset __P((int, void (*)(int)))) __P((int));
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int sigwait __P((const sigset_t * __restrict, int * __restrict));
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int sigwaitinfo __P((const sigset_t * __restrict, siginfo_t * __restrict));
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struct timespec;
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int sigtimedwait __P((const sigset_t * __restrict,
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siginfo_t * __restrict, const struct timespec * __restrict));
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int __sigtimedwait __P((const sigset_t * __restrict,
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siginfo_t * __restrict, struct timespec * __restrict));
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#endif /* _POSIX_C_SOURCE >= 200112 || _XOPEN_SOURCE_EXTENDED || ... */
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#if defined(_NETBSD_SOURCE)
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#ifndef __PSIGNAL_DECLARED
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#define __PSIGNAL_DECLARED
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/* also in unistd.h */
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void psignal __P((unsigned int, const char *));
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#endif /* __PSIGNAL_DECLARED */
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int sigblock __P((int));
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#ifdef __LIBC12_SOURCE__
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int sigreturn __P((struct sigcontext13 *));
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int __sigreturn14 __P((struct sigcontext *));
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#else
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int sigreturn __P((struct sigcontext *)) __RENAME(__sigreturn14);
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#endif
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int sigsetmask __P((int));
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int sigvec __P((int, struct sigvec *, struct sigvec *));
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#endif /* _NETBSD_SOURCE */
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#endif /* !_ANSI_SOURCE */
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__END_DECLS
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#endif /* !_SIGNAL_H_ */
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