41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/* Copyright (C) 1991, 92, 1994-1998, 2000 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 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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#include <errno.h>
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#include <signal.h>
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#include <stddef.h> /* For NULL. */
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/* Set the mask of blocked signals to MASK,
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wait for a signal to arrive, and then restore the mask. */
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int
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__sigpause (int sig_or_mask, int is_sig)
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{
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sigset_t set;
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int sig;
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if (is_sig != 0)
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{
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/* The modern X/Open implementation is requested. */
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if (__sigprocmask (0, NULL, &set) < 0
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/* Yes, we call `sigdelset' and not `__sigdelset'. */
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|| __sigdelset (&set, sig_or_mask) < 0)
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return -1;
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}
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else
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{
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if (__sigemptyset (&set) < 0)
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return -1;
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if (sizeof (sig_or_mask) == sizeof (set))
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*(int *) &set = sig_or_mask;
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else if (sizeof (unsigned long int) == sizeof (set))
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*(unsigned long int *) &set = (unsigned int) sig_or_mask;
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else
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for (sig = 1; sig < NSIG; ++sig)
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if ((sig_or_mask & sigmask (sig)) && __sigaddset (&set, sig) < 0)
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return -1;
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}
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return __sigsuspend (&set);
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}
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/* We have to provide a default version of this function since the
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standards demand it. The version which is a bit more reasonable is
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the BSD version. So make this the default. */
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int
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__default_sigpause (int mask)
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{
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return __sigpause (mask, 0);
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}
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#undef sigpause
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weak_alias (__default_sigpause, sigpause)
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/* We have to provide a default version of this function since the
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standards demand it. The version which is a bit more reasonable is
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the BSD version. So make this the default. */
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int
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__xpg_sigpause (int sig)
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{
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return __sigpause (sig, 1);
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}
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