sigcompat.c revision 81586 
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
34#if defined(LIBC_SCCS) && !defined(lint)
35#if 0
36static char sccsid[] = "@(#)sigcompat.c	8.1 (Berkeley) 6/2/93";
37#endif
38static const char rcsid[] =
39  "$FreeBSD: head/lib/libc/compat-43/sigcompat.c 81586 2001-08-13 14:06:34Z ru $";
40#endif /* LIBC_SCCS and not lint */
41
42#include "namespace.h"
43#include <sys/param.h>
44#include <signal.h>
45#include "un-namespace.h"
46#include "libc_private.h"
47
48int
49sigvec(signo, sv, osv)
50	int signo;
51	struct sigvec *sv, *osv;
52{
53	struct sigaction sa, osa;
54	struct sigaction *sap, *osap;
55	int ret;
56
57	if (sv != NULL) {
58		sa.sa_handler = sv->sv_handler;
59		sa.sa_flags = sv->sv_flags ^ SV_INTERRUPT;
60		sigemptyset(&sa.sa_mask);
61		sa.sa_mask.__bits[0] = sv->sv_mask;
62		sap = &sa;
63	} else
64		sap = NULL;
65	osap = osv != NULL ? &osa : NULL;
66	ret = _sigaction(signo, sap, osap);
67	if (ret == 0 && osv != NULL) {
68		osv->sv_handler = osa.sa_handler;
69		osv->sv_flags = osa.sa_flags ^ SV_INTERRUPT;
70		osv->sv_mask = osa.sa_mask.__bits[0];
71	}
72	return (ret);
73}
74
75int
76sigsetmask(mask)
77	int mask;
78{
79	sigset_t set, oset;
80	int n;
81
82	sigemptyset(&set);
83	set.__bits[0] = mask;
84	n = _sigprocmask(SIG_SETMASK, &set, &oset);
85	if (n)
86		return (n);
87	return (oset.__bits[0]);
88}
89
90int
91sigblock(mask)
92	int mask;
93{
94	sigset_t set, oset;
95	int n;
96
97	sigemptyset(&set);
98	set.__bits[0] = mask;
99	n = _sigprocmask(SIG_BLOCK, &set, &oset);
100	if (n)
101		return (n);
102	return (oset.__bits[0]);
103}
104
105int
106sigpause(mask)
107	int mask;
108{
109	sigset_t set;
110
111	sigemptyset(&set);
112	set.__bits[0] = mask;
113	return (_sigsuspend(&set));
114}
115