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51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
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/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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/* These definitions match those used by the 4.4 BSD kernel.
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If the operating system has a `sigaction' system call that correctly
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implements the POSIX.1 behavior, there should be a system-dependent
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version of this file that defines `struct sigaction' and the `SA_*'
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constants appropriately. */
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/* Structure describing the action to be taken when a signal arrives. */
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struct sigaction
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{
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/* Signal handler. */
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__sighandler_t sa_handler;
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/* Additional set of signals to be blocked. */
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__sigset_t sa_mask;
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/* Special flags. */
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int sa_flags;
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};
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/* Bits in `sa_flags'. */
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#ifdef __USE_BSD
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#define SA_ONSTACK 0x1 /* Take signal on signal stack. */
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#define SA_RESTART 0x2 /* Don't restart syscall on signal return. */
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#define SA_DISABLE 0x4 /* Disable alternate signal stack. */
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#endif
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#define SA_NOCLDSTOP 0x8 /* Don't send SIGCHLD when children stop. */
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/* Values for the HOW argument to `sigprocmask'. */
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#define SIG_BLOCK 1 /* Block signals. */
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#define SIG_UNBLOCK 2 /* Unblock signals. */
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#define SIG_SETMASK 3 /* Set the set of blocked signals. */
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