Update.
[glibc.git] / signal / sigrelse.c
blob971d60ffdf6e697ee11e4e7e38a2d8b75384922b
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.
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.
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.
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. */
21 #define __need_NULL
22 #include <stddef.h>
23 #include <signal.h>
25 int
26 sigrelse (sig)
27 int sig;
29 sigset_t set;
31 /* Retrieve current signal set. */
32 if (sigprocmask (SIG_SETMASK, NULL, &set) < 0)
33 return -1;
35 /* Remove the specified signal. */
36 if (sigdelset (&set, sig) < 0)
37 return -1;
39 /* Set the new mask. */
40 return sigprocmask (SIG_SETMASK, &set, NULL);