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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.
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/* Copyright (C) 1991,1994,1995,1996,1997,2001 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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/* Set the mask of blocked signals to MASK, returning the old mask. */
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int
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__sigsetmask (int mask)
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{
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register unsigned int sig;
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sigset_t set, oset;
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if (__sigemptyset (&set) < 0)
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return -1;
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if (sizeof (mask) == sizeof (set))
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*(int *) &set = mask;
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else if (sizeof (unsigned long int) == sizeof (set))
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*(unsigned long int *) &set = (unsigned int) mask;
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else
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for (sig = 1; sig < NSIG && sig <= sizeof (mask) * 8; ++sig)
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if ((mask & sigmask (sig)) && __sigaddset (&set, sig) < 0)
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return -1;
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if (__sigprocmask (SIG_SETMASK, &set, &oset) < 0)
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return -1;
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if (sizeof (mask) == sizeof (oset))
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mask = *(int *) &oset;
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else if (sizeof (unsigned long int) == sizeof (oset))
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mask = *(unsigned long int *) &oset;
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else
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for (sig = 1, mask = 0; sig < NSIG && sig <= sizeof (mask) * 8; ++sig)
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if (__sigismember (&oset, sig))
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mask |= sigmask (sig);
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return mask;
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}
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weak_alias (__sigsetmask, sigsetmask)
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