| 1 | /* sigstack, sigaltstack definitions. |
|---|---|
| 2 | Copyright (C) 1998-2016 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 _SIGNAL_H |
| 20 | # error "Never include this file directly. Use <signal.h> instead" |
| 21 | #endif |
| 22 | |
| 23 | |
| 24 | /* Structure describing a signal stack (obsolete). */ |
| 25 | struct sigstack |
| 26 | { |
| 27 | void *ss_sp; /* Signal stack pointer. */ |
| 28 | int ss_onstack; /* Nonzero if executing on this stack. */ |
| 29 | }; |
| 30 | |
| 31 | |
| 32 | /* Possible values for `ss_flags.'. */ |
| 33 | enum |
| 34 | { |
| 35 | SS_ONSTACK = 1, |
| 36 | #define SS_ONSTACK SS_ONSTACK |
| 37 | SS_DISABLE |
| 38 | #define SS_DISABLE SS_DISABLE |
| 39 | }; |
| 40 | |
| 41 | /* Minimum stack size for a signal handler. */ |
| 42 | #define MINSIGSTKSZ 2048 |
| 43 | |
| 44 | /* System default stack size. */ |
| 45 | #define SIGSTKSZ 8192 |
| 46 | |
| 47 | |
| 48 | /* Alternate, preferred interface. */ |
| 49 | typedef struct sigaltstack |
| 50 | { |
| 51 | void *ss_sp; |
| 52 | int ss_flags; |
| 53 | size_t ss_size; |
| 54 | } stack_t; |
| 55 |