glibc/sysdeps/unix/sysv/linux/bits/sigaction.h
Ulrich Drepper 39d1d4e5ca Update.
1999-10-12  Andreas Jaeger  <aj@suse.de>

	* stdlib/tst-environ.c: Include <string.h> for strcpy declaration.

	* math/basic-test.c: Fix typo.

	* locale/programs/xstrdup.c: Include string.h for glibc
	compilation to get string prototypes.

	* sysdeps/unix/sysv/linux/alpha/sys/ucontext.h: Add definition of
	gregset_t and fpregset_t.

	* sysdeps/generic/s_nexttowardf.c: Add parenthesis to shut up gcc
	warnings.  Correct value for x == 0.

	* argp/argp-help.c: Remove broken definition of flockfile and
	funlockfile.

1999-10-12  Andreas Schwab  <schwab@suse.de>

	* sysdeps/unix/sysv/linux/alpha/bits/sigaction.h: Update to match
	generic Linux version.

1999-10-12  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/bits/sigaction.h: Remove K&R compatibility.
1999-10-12 16:00:04 +00:00

77 lines
2.7 KiB
C

/* The proper definitions for Linux's sigaction.
Copyright (C) 1993, 94, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _SIGNAL_H
# error "Never include <bits/sigaction.h> directly; use <signal.h> instead."
#endif
/* Structure describing the action to be taken when a signal arrives. */
struct sigaction
{
/* Signal handler. */
#ifdef __USE_POSIX199309
union
{
/* Used if SA_SIGINFO is not set. */
__sighandler_t sa_handler;
/* Used if SA_SIGINFO is set. */
void (*sa_sigaction) (int, siginfo_t *, void *);
}
__sigaction_handler;
# define sa_handler __sigaction_handler.sa_handler
# define sa_sigaction __sigaction_handler.sa_sigaction
#else
__sighandler_t sa_handler;
#endif
/* Additional set of signals to be blocked. */
__sigset_t sa_mask;
/* Special flags. */
int sa_flags;
/* Restore handler. */
void (*sa_restorer) (void);
};
/* Bits in `sa_flags'. */
#define SA_NOCLDSTOP 1 /* Don't send SIGCHLD when children stop. */
#define SA_SIGINFO 4 /* Invoke signal-catching function with
three arguments instead of one. */
#if defined __USE_UNIX98 || defined __USE_MISC
# define SA_ONSTACK 0x08000000 /* Use signal stack by using `sa_restorer'. */
# define SA_RESTART 0x10000000 /* Restart syscall on signal return. */
# define SA_NODEFER 0x40000000 /* Don't automatically block the signal when
its handler is being executed. */
# define SA_RESETHAND 0x80000000 /* Reset to SIG_DFL on entry to handler. */
#endif
#ifdef __USE_MISC
# define SA_INTERRUPT 0x20000000 /* Historical no-op. */
/* Some aliases for the SA_ constants. */
# define SA_NOMASK SA_NODEFER
# define SA_ONESHOT SA_RESETHAND
# define SA_STACK SA_ONSTACK
#endif
/* Values for the HOW argument to `sigprocmask'. */
#define SIG_BLOCK 0 /* Block signals. */
#define SIG_UNBLOCK 1 /* Unblock signals. */
#define SIG_SETMASK 2 /* Set the set of blocked signals. */