42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* Remove SIG from the calling process' signal mask.
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Copyright (C) 1998, 2000, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#define __need_NULL
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#include <stddef.h>
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#include <signal.h>
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int
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sigrelse (sig)
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int sig;
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{
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sigset_t set;
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/* Retrieve current signal set. */
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if (__sigprocmask (SIG_SETMASK, NULL, &set) < 0)
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return -1;
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/* Remove the specified signal. */
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if (sigdelset (&set, sig) < 0)
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return -1;
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/* Set the new mask. */
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return __sigprocmask (SIG_SETMASK, &set, NULL);
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}
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