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64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* sigstack, sigaltstack definitions.
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Copyright (C) 1998-2017 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _BITS_SIGSTACK_H
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#define _BITS_SIGSTACK_H 1
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#if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
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# error "Never include this file directly. Use <signal.h> instead"
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#endif
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#define __need_size_t
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#include <stddef.h>
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/* Structure describing a signal stack (obsolete). */
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struct sigstack
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{
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__ptr_t ss_sp; /* Signal stack pointer. */
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int ss_onstack; /* Nonzero if executing on this stack. */
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};
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/* Alternate, preferred interface. */
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typedef struct sigaltstack
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{
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__ptr_t ss_sp;
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int ss_flags;
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size_t ss_size;
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} stack_t;
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/* Possible values for `ss_flags'. */
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enum
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{
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SS_ONSTACK = 1,
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#define SS_ONSTACK SS_ONSTACK
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SS_DISABLE
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#define SS_DISABLE SS_DISABLE
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};
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/* Minimum stack size for a signal handler.
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Yes, this should be 131072 but the constant got defined incorrectly
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in the kernel and we have to live with it. Users should in any case
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use SIGSTKSZ as the size user-supplied buffers should have. */
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#define MINSIGSTKSZ 131027
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/* System default stack size. */
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#define SIGSTKSZ 262144
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#endif /* bits/sigstack.h */
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