1 | /* sigstack, sigaltstack definitions. |
2 | Copyright (C) 1998-2017 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, see |
17 | <http://www.gnu.org/licenses/>. */ |
18 | |
19 | #ifndef _BITS_SIGSTACK_H |
20 | #define _BITS_SIGSTACK_H 1 |
21 | |
22 | #if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H |
23 | # error "Never include this file directly. Use <signal.h> instead" |
24 | #endif |
25 | |
26 | #define __need_size_t |
27 | #include <stddef.h> |
28 | |
29 | /* Structure describing a signal stack (obsolete). */ |
30 | struct sigstack |
31 | { |
32 | void *ss_sp; /* Signal stack pointer. */ |
33 | int ss_onstack; /* Nonzero if executing on this stack. */ |
34 | }; |
35 | |
36 | /* Alternate, preferred interface. */ |
37 | typedef struct sigaltstack |
38 | { |
39 | void *ss_sp; |
40 | int ss_flags; |
41 | size_t ss_size; |
42 | } stack_t; |
43 | |
44 | /* Possible values for `ss_flags'. */ |
45 | enum |
46 | { |
47 | SS_ONSTACK = 1, |
48 | #define SS_ONSTACK SS_ONSTACK |
49 | SS_DISABLE |
50 | #define SS_DISABLE SS_DISABLE |
51 | }; |
52 | |
53 | /* Minimum stack size for a signal handler. */ |
54 | #define MINSIGSTKSZ 2048 |
55 | |
56 | /* System default stack size. */ |
57 | #define SIGSTKSZ 8192 |
58 | |
59 | #endif /* bits/sigstack.h */ |
60 | |