/* sigstack, sigaltstack definitions.
Copyright (C) 1998, 1999 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */

#ifndef _SIGNAL_H
# error "Never include this file directly. Use <signal.h> instead"
#endif


/* Structure describing a signal stack (obsolete). */
struct sigstack
{
void *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. */
#define MINSIGSTKSZ 2048

/* System default stack size. */
#define SIGSTKSZ 8192


/* Alternate, preferred interface. */
typedef struct sigaltstack
{
void *ss_sp;
int ss_flags;
size_t ss_size;
} stack_t;