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https://github.com/freebsd/freebsd-src
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943c18018b
include/signal.h: There was massive namespace pollution from including <sys/types.h>. POSIX functions were declared even when _ANSI_SOURCE is defined. sys.sys/signal.h: NSIG was declared even if _ANSI_SOURCE or _POSIX_SOURCE is defined. sig_atomic_t wasn't declared if _POSIX_SOURCE is defined. Declare a typedef for signal handling functions and use it to unobfuscate declarations and to avoid half-baked function types that cause unwanted compiler warnings at certain warning levels. Fix confusing comment about SA_RESTART. sys/i386/include/signal.h: This has to be included to get the declaration of sig_atomic_t even when _ANSI_SOURCE is defined, so be more careful about polluting the ANSI namespace. Uniformize idempotency ifdefs.
84 lines
3.4 KiB
C
84 lines
3.4 KiB
C
/*-
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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/signal.h>
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#include <machine/ansi.h>
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#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
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extern __const char *__const sys_signame[NSIG];
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extern __const char *__const sys_siglist[NSIG];
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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((_BSD_PID_T_, int));
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int sigaction __P((int, const struct sigaction *, struct sigaction *));
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int sigaddset __P((sigset_t *, int));
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int sigdelset __P((sigset_t *, int));
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int sigemptyset __P((sigset_t *));
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int sigfillset __P((sigset_t *));
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int sigismember __P((const sigset_t *, int));
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int sigpending __P((sigset_t *));
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int sigprocmask __P((int, const sigset_t *, sigset_t *));
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int sigsuspend __P((const sigset_t *));
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#ifndef _POSIX_SOURCE
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int killpg __P((_BSD_PID_T_, int));
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int sigblock __P((int));
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int siginterrupt __P((int, int));
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int sigpause __P((int));
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int sigreturn __P((struct sigcontext *));
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int sigsetmask __P((int));
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int sigstack __P((const struct sigstack *, struct sigstack *));
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int sigvec __P((int, struct sigvec *, struct sigvec *));
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void psignal __P((unsigned int, const char *));
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#endif /* !_POSIX_SOURCE */
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#endif /* !_ANSI_SOURCE */
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__END_DECLS
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#ifndef _ANSI_SOURCE
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/* List definitions after function declarations, or Reiser cpp gets upset. */
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#define sigaddset(set, signo) (*(set) |= 1 << ((signo) - 1), 0)
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#define sigdelset(set, signo) (*(set) &= ~(1 << ((signo) - 1)), 0)
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#define sigemptyset(set) (*(set) = 0, 0)
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#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
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#define sigismember(set, signo) ((*(set) & (1 << ((signo) - 1))) != 0)
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#endif /* !_ANSI_SOURCE */
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#endif /* !_SIGNAL_H_ */
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