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/* sigstack, sigaltstack definitions.
Copyright (C) 1998-2015 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 this file directly. Use <signal.h> instead"
#endif
#ifndef _SIGSTACK_H
#define _SIGSTACK_H 1
/* Structure describing a signal stack (obsolete). */
struct sigstack
{
__ptr_t ss_sp; /* Signal stack pointer. */
int ss_onstack; /* Nonzero if executing on this stack. */
};
/* Possible values for `ss_flags.'. */
enum
{
SS_ONSTACK = 1,
#define SS_ONSTACK SS_ONSTACK
SS_DISABLE
#define SS_DISABLE SS_DISABLE
};
/* Minimum stack size for a signal handler.
Yes, this should be 131072 but the constant got defined incorrectly
in the kernel and we have to live with it. Users should in any case
use SIGSTKSZ as the size user-supplied buffers should have. */
#define MINSIGSTKSZ 131027
/* System default stack size. */
#define SIGSTKSZ 262144
/* Alternate, preferred interface. */
typedef struct sigaltstack
{
__ptr_t ss_sp;
int ss_flags;
size_t ss_size;
} stack_t;
#endif /* bits/sigstack.h */
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