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60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/* sigaction.c
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*
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* Copyright (C) 1995 DJ Delorie
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*
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* (See the README file in this directory for the copyright and license
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* history of this file.)
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*
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* This file is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This file 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this file. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <signal.h>
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#include <errno.h>
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int
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sigaction(int _sig, const struct sigaction *_act, struct sigaction *_oact)
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{
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int retval = 0;
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if (_oact)
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{
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void (*installed_sig)(int) = signal (_sig, SIG_IGN);
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/* FIXME */
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if (installed_sig == SIG_ERR)
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{
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retval = -1;
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errno = EINVAL;
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}
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else
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signal (_sig, installed_sig);
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_oact->sa_handler = installed_sig;
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retval = sigemptyset (&_oact->sa_mask);
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_oact->sa_flags = 0;
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}
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if (_act)
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{
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if (signal (_sig, _act->sa_handler) == SIG_ERR)
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{
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retval = -1;
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errno = EINVAL;
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}
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}
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return 0;
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}
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/* arch-tag: 39526405-3d3a-44fe-af28-82a515e0c8e8
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(do not change this comment) */
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