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1 | /* Remove SIG from the calling process' signal mask. |
2 | Copyright (C) 1998 Free Software Foundation, Inc. | |
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 | |
7 | modify it under the terms of the GNU Library General Public License as | |
8 | published by the Free Software Foundation; either version 2 of the | |
9 | License, or (at your option) any later version. | |
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 | |
14 | Library General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Library General Public | |
17 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
18 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include <signal.h> | |
22 | ||
23 | int | |
24 | sigrelse (sig) | |
25 | int sig; | |
26 | { | |
27 | sigset_t set; | |
28 | ||
29 | /* Retrieve current signal set. */ | |
30 | if (sigprocmask (SIG_SETMASK, NULL, &set) < 0) | |
31 | return -1; | |
32 | ||
33 | /* Remove the specified signal. */ | |
34 | if (sigdelset (&set, sig) < 0) | |
35 | return -1; | |
36 | ||
37 | /* Set the new mask. */ | |
38 | return sigprocmask (SIG_SETMASK, &set, NULL); | |
39 | } |