1/* sigstack, sigaltstack definitions.
2   Copyright (C) 1998, 1999 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; if not, write to the Free
17   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18   02111-1307 USA.  */
19
20#ifndef _SIGNAL_H
21# error "Never include this file directly.  Use <signal.h> instead"
22#endif
23
24
25/* Structure describing a signal stack (obsolete).  */
26struct sigstack
27  {
28    void *ss_sp;		/* Signal stack pointer.  */
29    int ss_onstack;		/* Nonzero if executing on this stack.  */
30  };
31
32
33/* Possible values for `ss_flags.'.  */
34enum
35{
36  SS_ONSTACK = 1,
37#define SS_ONSTACK	SS_ONSTACK
38  SS_DISABLE
39#define SS_DISABLE	SS_DISABLE
40};
41
42/* Minimum stack size for a signal handler.  */
43#define MINSIGSTKSZ	2048
44
45/* System default stack size.  */
46#define SIGSTKSZ	8192
47
48
49/* Alternate, preferred interface.  */
50typedef struct sigaltstack
51  {
52    void *ss_sp;
53    int ss_flags;
54    size_t ss_size;
55  } stack_t;
56