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af69217f | 1 | /* Remove SIG from the calling process' signal mask. |
66cd688c | 2 | Copyright (C) 1998, 2000, 2003 Free Software Foundation, Inc. |
af69217f UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
af69217f UD |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
af69217f | 15 | |
41bdb6e2 AJ |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | 02111-1307 USA. */ | |
af69217f | 20 | |
8619129f UD |
21 | #define __need_NULL |
22 | #include <stddef.h> | |
af69217f UD |
23 | #include <signal.h> |
24 | ||
25 | int | |
26 | sigrelse (sig) | |
27 | int sig; | |
28 | { | |
29 | sigset_t set; | |
30 | ||
31 | /* Retrieve current signal set. */ | |
50304ef0 | 32 | if (__sigprocmask (SIG_SETMASK, NULL, &set) < 0) |
af69217f UD |
33 | return -1; |
34 | ||
35 | /* Remove the specified signal. */ | |
66cd688c | 36 | if (sigdelset (&set, sig) < 0) |
af69217f UD |
37 | return -1; |
38 | ||
39 | /* Set the new mask. */ | |
50304ef0 | 40 | return __sigprocmask (SIG_SETMASK, &set, NULL); |
af69217f | 41 | } |