sigcompat.c revision 92986 
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)
35static char sccsid[] = "@(#)sigcompat.c	8.1 (Berkeley) 6/2/93";
36#endif /* LIBC_SCCS and not lint */
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD: head/lib/libc/compat-43/sigcompat.c 92986 2002-03-22 21:53:29Z obrien $");
39
40#include "namespace.h"
41#include <sys/param.h>
42#include <signal.h>
43#include "un-namespace.h"
44#include "libc_private.h"
45
46int
47sigvec(signo, sv, osv)
48	int signo;
49	struct sigvec *sv, *osv;
50{
51	struct sigaction sa, osa;
52	struct sigaction *sap, *osap;
53	int ret;
54
55	if (sv != NULL) {
56		sa.sa_handler = sv->sv_handler;
57		sa.sa_flags = sv->sv_flags ^ SV_INTERRUPT;
58		sigemptyset(&sa.sa_mask);
59		sa.sa_mask.__bits[0] = sv->sv_mask;
60		sap = &sa;
61	} else
62		sap = NULL;
63	osap = osv != NULL ? &osa : NULL;
64	ret = _sigaction(signo, sap, osap);
65	if (ret == 0 && osv != NULL) {
66		osv->sv_handler = osa.sa_handler;
67		osv->sv_flags = osa.sa_flags ^ SV_INTERRUPT;
68		osv->sv_mask = osa.sa_mask.__bits[0];
69	}
70	return (ret);
71}
72
73int
74sigsetmask(mask)
75	int mask;
76{
77	sigset_t set, oset;
78	int n;
79
80	sigemptyset(&set);
81	set.__bits[0] = mask;
82	n = _sigprocmask(SIG_SETMASK, &set, &oset);
83	if (n)
84		return (n);
85	return (oset.__bits[0]);
86}
87
88int
89sigblock(mask)
90	int mask;
91{
92	sigset_t set, oset;
93	int n;
94
95	sigemptyset(&set);
96	set.__bits[0] = mask;
97	n = _sigprocmask(SIG_BLOCK, &set, &oset);
98	if (n)
99		return (n);
100	return (oset.__bits[0]);
101}
102
103int
104sigpause(mask)
105	int mask;
106{
107	sigset_t set;
108
109	sigemptyset(&set);
110	set.__bits[0] = mask;
111	return (_sigsuspend(&set));
112}
113