sigcompat.c revision 51794 
1/*
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * $FreeBSD: head/lib/libc/compat-43/sigcompat.c 51794 1999-09-29 15:18:46Z marcel $
34 */
35
36#if defined(LIBC_SCCS) && !defined(lint)
37static char sccsid[] = "@(#)sigcompat.c	8.1 (Berkeley) 6/2/93";
38#endif /* LIBC_SCCS and not lint */
39
40#include <sys/param.h>
41#include <signal.h>
42
43int
44sigvec(signo, sv, osv)
45	int signo;
46	struct sigvec *sv, *osv;
47{
48	int ret;
49
50	if (sv)
51		sv->sv_flags ^= SV_INTERRUPT;	/* !SA_INTERRUPT */
52	ret = osigaction(signo, (struct osigaction *)sv,
53	    (struct osigaction *)osv);
54	if (ret == 0 && osv)
55		osv->sv_flags ^= SV_INTERRUPT;	/* !SA_INTERRUPT */
56	return (ret);
57}
58
59int
60sigsetmask(mask)
61	int mask;
62{
63	sigset_t set, oset;
64
65	sigemptyset(&set);
66	set.__bits[0] = mask;
67	(void)sigprocmask(SIG_SETMASK, &set, &oset);
68	return (oset.__bits[0]);
69}
70
71int
72sigblock(mask)
73	int mask;
74{
75	sigset_t set, oset;
76
77	sigemptyset(&set);
78	set.__bits[0] = mask;
79
80	(void)sigprocmask(SIG_BLOCK, &set, &oset);
81	return (oset.__bits[0]);
82}
83
84int
85sigpause(mask)
86	int mask;
87{
88	sigset_t set;
89
90	sigemptyset(&set);
91	set.__bits[0] = mask;
92	return (sigsuspend(&set));
93}
94