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/* The proper definitions for Linux/MIPS's sigaction.
Copyright (C) 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2003
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, see
<http://www.gnu.org/licenses/>. */
#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 {
unsigned sa_flags;
#ifdef __USE_POSIX199309
union {
__sighandler_t sa_handler;
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
sigset_t sa_mask;
void (*sa_restorer)(void);
/*int s_resv[1]; - reserved [deleted in uclibc] */
};
/* Bits in `sa_flags'. */
/* Please note that some Linux kernels versions use different values for these
flags which is a bug in those kernel versions. */
#define SA_NOCLDSTOP 0x00000001 /* Don't send SIGCHLD when children stop. */
#define SA_NOCLDWAIT 0x00010000 /* Don't create zombie on child death. */
#define SA_SIGINFO 0x00000008 /* 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_RESETHAND 0x80000000 /* Reset to SIG_DFL on entry to handler. */
# 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. */
#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_NOP 0 /* 0 is unused to catch errors */
#define SIG_BLOCK 1 /* Block signals. */
#define SIG_UNBLOCK 2 /* Unblock signals. */
#define SIG_SETMASK 3 /* Set the set of blocked signals. */
#ifdef __USE_MISC
# define SIG_SETMASK32 256 /* Goodie from SGI for BSD compatibility:
set only the low 32 bit of the sigset. */
#endif
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