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glibc/bits/sigaction.h
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/* Copyright (C) 1991, 1992, 1996 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., 675 Mass Ave, | |
Cambridge, MA 02139, USA. */ | |
/* These definitions match those used by the 4.4 BSD kernel. | |
If the operating system has a `sigaction' system call that correctly | |
implements the POSIX.1 behavior, there should be a system-dependent | |
version of this file that defines `struct sigaction' and the `SA_*' | |
constants appropriately. */ | |
/* Structure describing the action to be taken when a signal arrives. */ | |
struct sigaction | |
{ | |
/* Signal handler. */ | |
__sighandler_t sa_handler; | |
/* Additional set of signals to be blocked. */ | |
__sigset_t sa_mask; | |
/* Special flags. */ | |
int sa_flags; | |
}; | |
/* Bits in `sa_flags'. */ | |
#ifdef __USE_BSD | |
#define SA_ONSTACK 0x1 /* Take signal on signal stack. */ | |
#define SA_RESTART 0x2 /* Don't restart syscall on signal return. */ | |
#define SA_DISABLE 0x4 /* Disable alternate signal stack. */ | |
#endif | |
#define SA_NOCLDSTOP 0x8 /* 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. */ |