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/* The proper definitions for SVR4's sigaction.
Copyright (C) 1993, 1994, 1996, 1997 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; 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
{
/* Special flags. */
int sa_flags;
/* Signal handler. */
__sighandler_t sa_handler;
/* Additional set of signals to be blocked. */
__sigset_t sa_mask;
/* Padding. */
int sa_resv[2];
};
/* Bits in `sa_flags'. */
#ifdef __USE_MISC
# define SA_ONSTACK 0x1 /* Take signal on signal stack. */
# define SA_RESETHAND 0x2 /* Reset to SIG_DFL on entry to handler. */
# define SA_RESTART 0x4 /* Restart syscall on signal return. */
# define SA_SIGINFO 0x8 /* Provide additional info to the handler. */
# define SA_NODEFER 0x10 /* Don't automatically block the signal when
its handler is being executed. */
# define SA_NOCLDWAIT 0x10000 /* Don't save zombie processes. */
#endif
#define SA_NOCLDSTOP 0x20000 /* Don't send SIGCHLD when children stop. */
/* Values for the HOW argument to `sigprocmask'. */
#define SIG_BLOCK 1 /* Block signals. */
#define SIG_UNBLOCK 2 /* Unblock signals. */
#define SIG_SETMASK 3 /* Set the set of blocked signals. */
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