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04277e02d7
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59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/* Copyright (C) 1993-2019 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 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, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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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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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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setval = set->__val[0];
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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 = INLINE_SYSCALL (osf_sigprocmask, 2, 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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libc_hidden_def (__sigprocmask)
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weak_alias (__sigprocmask, sigprocmask);
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