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d4697bc9 | 1 | /* Copyright (C) 1991-2014 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | ||
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. | |
478b92f0 UD |
8 | |
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. |
478b92f0 | 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 | |
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18 | #include <errno.h> |
19 | #include <signal.h> | |
20 | #include <stddef.h> | |
21 | #include <unistd.h> | |
22 | ||
23 | ||
24 | /* Change the set of blocked signals to SET, | |
25 | wait until a signal arrives, and restore the set of blocked signals. */ | |
26 | int | |
a9ddb793 | 27 | __sigsuspend (set) |
c4029823 | 28 | const sigset_t *set; |
28f540f4 RM |
29 | { |
30 | sigset_t oset; | |
31 | int save; | |
32 | ||
33 | if (set == NULL) | |
34 | { | |
c4029823 | 35 | __set_errno (EINVAL); |
28f540f4 RM |
36 | return -1; |
37 | } | |
38 | ||
c4029823 | 39 | if (sigprocmask (SIG_SETMASK, set, &oset) < 0) |
28f540f4 RM |
40 | return -1; |
41 | ||
42 | (void) pause(); | |
43 | save = errno; | |
44 | ||
c4029823 | 45 | if (sigprocmask (SIG_SETMASK, &oset, (sigset_t *) NULL) < 0) |
28f540f4 RM |
46 | return -1; |
47 | ||
c4029823 | 48 | __set_errno (save); |
28f540f4 RM |
49 | return -1; |
50 | } | |
37ba7d66 | 51 | libc_hidden_def (__sigsuspend) |
a9ddb793 | 52 | weak_alias (__sigsuspend, sigsuspend) |