xref: /minix3/lib/libc/compat/sys/compat_sigaltstack.c (revision f14fb602092e015ff630df58e17c2a9cd57d29b3)
1*f14fb602SLionel Sambuc /*	$NetBSD: compat_sigaltstack.c,v 1.5 2012/03/20 17:06:00 matt Exp $	*/
22fe8fb19SBen Gras 
32fe8fb19SBen Gras /*-
42fe8fb19SBen Gras  * Copyright (c) 1997 The NetBSD Foundation, Inc.
52fe8fb19SBen Gras  * All rights reserved.
62fe8fb19SBen Gras  *
72fe8fb19SBen Gras  * This code is derived from software contributed to The NetBSD Foundation
82fe8fb19SBen Gras  * by Klaus Klein.
92fe8fb19SBen Gras  *
102fe8fb19SBen Gras  * Redistribution and use in source and binary forms, with or without
112fe8fb19SBen Gras  * modification, are permitted provided that the following conditions
122fe8fb19SBen Gras  * are met:
132fe8fb19SBen Gras  * 1. Redistributions of source code must retain the above copyright
142fe8fb19SBen Gras  *    notice, this list of conditions and the following disclaimer.
152fe8fb19SBen Gras  * 2. Redistributions in binary form must reproduce the above copyright
162fe8fb19SBen Gras  *    notice, this list of conditions and the following disclaimer in the
172fe8fb19SBen Gras  *    documentation and/or other materials provided with the distribution.
182fe8fb19SBen Gras  *
192fe8fb19SBen Gras  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
202fe8fb19SBen Gras  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
212fe8fb19SBen Gras  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
222fe8fb19SBen Gras  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
232fe8fb19SBen Gras  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
242fe8fb19SBen Gras  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
252fe8fb19SBen Gras  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
262fe8fb19SBen Gras  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
272fe8fb19SBen Gras  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
282fe8fb19SBen Gras  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
292fe8fb19SBen Gras  * POSSIBILITY OF SUCH DAMAGE.
302fe8fb19SBen Gras  */
312fe8fb19SBen Gras 
322fe8fb19SBen Gras #include <sys/cdefs.h>
332fe8fb19SBen Gras #if defined(LIBC_SCCS) && !defined(lint)
34*f14fb602SLionel Sambuc __RCSID("$NetBSD: compat_sigaltstack.c,v 1.5 2012/03/20 17:06:00 matt Exp $");
352fe8fb19SBen Gras #endif /* LIBC_SCCS and not lint */
362fe8fb19SBen Gras 
372fe8fb19SBen Gras #define __LIBC12_SOURCE__
382fe8fb19SBen Gras 
392fe8fb19SBen Gras #include <limits.h>
402fe8fb19SBen Gras #include <sys/time.h>
412fe8fb19SBen Gras #include <compat/sys/time.h>
422fe8fb19SBen Gras #include <signal.h>
432fe8fb19SBen Gras #include <compat/include/signal.h>
442fe8fb19SBen Gras #include <stddef.h>
452fe8fb19SBen Gras 
462fe8fb19SBen Gras int
sigaltstack(const struct sigaltstack13 * onss,struct sigaltstack13 * ooss)47*f14fb602SLionel Sambuc sigaltstack(const struct sigaltstack13 *onss, struct sigaltstack13 *ooss)
482fe8fb19SBen Gras {
492fe8fb19SBen Gras 	stack_t nss, oss;
502fe8fb19SBen Gras 	int error;
512fe8fb19SBen Gras 
522fe8fb19SBen Gras 	nss.ss_sp = onss->ss_sp;
532fe8fb19SBen Gras 	nss.ss_size = onss->ss_size;
542fe8fb19SBen Gras 	nss.ss_flags = onss->ss_flags;
552fe8fb19SBen Gras 
562fe8fb19SBen Gras 	error = __sigaltstack14(&nss, &oss);
572fe8fb19SBen Gras 
582fe8fb19SBen Gras 	if (error == 0 && ooss != NULL) {
592fe8fb19SBen Gras 		ooss->ss_sp = oss.ss_sp;
602fe8fb19SBen Gras 		if (oss.ss_size > INT_MAX)
612fe8fb19SBen Gras 			ooss->ss_size = INT_MAX;
622fe8fb19SBen Gras 		else
63*f14fb602SLionel Sambuc 			ooss->ss_size = (int)oss.ss_size;
642fe8fb19SBen Gras 		ooss->ss_flags = oss.ss_flags;
652fe8fb19SBen Gras 	}
662fe8fb19SBen Gras 
672fe8fb19SBen Gras 	return (error);
682fe8fb19SBen Gras }
69