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61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/* Copyright (C) 1993, 1995, 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David Mosberger (davidm@azstarnet.com).
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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 not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <sysdep.h>
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#include <signal.h>
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/* When there is kernel support for more than 64 signals, we'll have to
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switch to a new system call convention here. */
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extern unsigned long __osf_sigprocmask (int how, unsigned long newmask);
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int
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__sigprocmask (int how, const sigset_t *set, sigset_t *oset)
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{
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unsigned long int setval;
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long result;
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if (set)
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{
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setval = set->__val[0];
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}
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else
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{
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setval = 0;
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how = SIG_BLOCK; /* ensure blocked mask doesn't get changed */
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}
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result = __osf_sigprocmask (how, setval);
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if (result == -1)
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/* If there are ever more than 63 signals, we need to recode this
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in assembler since we wouldn't be able to distinguish a mask of
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all 1s from -1, but for now, we're doing just fine... */
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return result;
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if (oset)
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{
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oset->__val[0] = result;
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result = _SIGSET_NWORDS;
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while (--result > 0)
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oset->__val[result] = 0;
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}
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return 0;
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}
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weak_alias (__sigprocmask, sigprocmask);
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