1/* $NetBSD: sigcompat.c,v 1.13 2005/12/24 21:11:16 perry Exp $ */
2
3/*
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#if defined(LIBC_SCCS) && !defined(lint)
34#if 0
35static char sccsid[] = "@(#)sigcompat.c 8.1 (Berkeley) 6/2/93";
36#else
37__RCSID("$NetBSD: sigcompat.c,v 1.13 2005/12/24 21:11:16 perry Exp $");
38#endif
39#endif /* LIBC_SCCS and not lint */
40
41#include <sys/param.h>
42#include <signal.h>
43#include <compat/sys/signal.h>
44
45static inline void sv2sa(struct sigaction *, const struct sigvec *);
46static inline void sa2sv(struct sigvec *, const struct sigaction *);
47
48static inline void
49sv2sa(struct sigaction *sa, const struct sigvec *sv)
50{
51 sigemptyset(&sa->sa_mask);
52 sa->sa_mask.__bits[0] = sv->sv_mask;
53 sa->sa_handler = sv->sv_handler;
54 sa->sa_flags = sv->sv_flags ^ SV_INTERRUPT; /* !SA_INTERRUPT */
55}
56
57static inline void
58sa2sv(struct sigvec *sv, const struct sigaction *sa)
59{
60 sv->sv_mask = sa->sa_mask.__bits[0];
61 sv->sv_handler = sa->sa_handler;
62 sv->sv_flags = sa->sa_flags ^ SV_INTERRUPT; /* !SA_INTERRUPT */
63}
64
65int
66sigvec(int signo, struct sigvec *nsv, struct sigvec *osv)
67{
68 int ret;
69 struct sigaction osa, nsa;
70
71 if (nsv)
72 sv2sa(&nsa, nsv);
73
74 ret = sigaction(signo, nsv ? &nsa : NULL, osv ? &osa : NULL);
75
76 if (ret == 0 && osv)
77 sa2sv(osv, &osa);
78
79 return (ret);
80}
81
82int
83sigsetmask(int mask)
84{
85 sigset_t nmask, omask;
86 int n;
87
88 sigemptyset(&nmask);
89 nmask.__bits[0] = mask;
90
91 n = sigprocmask(SIG_SETMASK, &nmask, &omask);
92 if (n)
93 return (n);
94 return (omask.__bits[0]);
95}
96
97int
98sigblock(int mask)
99{
100 sigset_t nmask, omask;
101 int n;
102
103 sigemptyset(&nmask);
104 nmask.__bits[0] = mask;
105
106 n = sigprocmask(SIG_BLOCK, &nmask, &omask);
107 if (n)
108 return (n);
109 return (omask.__bits[0]);
110}
111
112int
113sigpause(int mask)
114{
115 sigset_t nmask;
116
117 sigemptyset(&nmask);
118 nmask.__bits[0] = mask;
119 return (sigsuspend(&nmask));
120}
121