52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
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/* Copyright (C) 1991 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <errno.h>
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#include <signal.h>
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#include <stddef.h>
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#include <unistd.h>
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/* Change the set of blocked signals to SET,
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wait until a signal arrives, and restore the set of blocked signals. */
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int
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DEFUN(sigsuspend, (set), CONST sigset_t *set)
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{
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sigset_t oset;
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int save;
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if (set == NULL)
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{
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errno = EINVAL;
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return -1;
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}
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if (sigprocmask(SIG_SETMASK, set, &oset) < 0)
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return -1;
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(void) pause();
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save = errno;
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if (sigprocmask(SIG_SETMASK, &oset, (sigset_t *) NULL) < 0)
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return -1;
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errno = save;
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return -1;
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}
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