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f7a9f785 | 1 | /* Copyright (C) 1992-2016 Free Software Foundation, Inc. |
ebbad4cc | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
ebbad4cc | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
ebbad4cc UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
28f540f4 RM |
18 | #include <errno.h> |
19 | #include <signal.h> | |
20 | #include <hurd.h> | |
21 | ||
22 | /* Run signals handlers on the stack specified by SS (if not NULL). | |
23 | If OSS is not NULL, it is filled in with the old signal stack status. */ | |
24 | int | |
224a12bc | 25 | sigstack (struct sigstack *ss, struct sigstack *oss) |
28f540f4 RM |
26 | { |
27 | struct sigaltstack as, oas; | |
28 | ||
29 | as.ss_sp = ss->ss_sp; | |
30 | as.ss_size = 0; | |
31 | as.ss_flags = 0; | |
32 | ||
7ce241a0 | 33 | if (__sigaltstack (&as, &oas) < 0) |
28f540f4 RM |
34 | return -1; |
35 | ||
36 | if (oss != NULL) | |
37 | { | |
38 | oss->ss_sp = oas.ss_sp; | |
7ce241a0 | 39 | oss->ss_onstack = oas.ss_flags & SS_ONSTACK; |
28f540f4 RM |
40 | } |
41 | ||
42 | return 0; | |
43 | } |