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
35 static 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
45 static inline void sv2sa(struct sigaction *, const struct sigvec *);
46 static inline void sa2sv(struct sigvec *, const struct sigaction *);
47
48 static inline void
sv2sa(struct sigaction * sa,const struct sigvec * sv)49 sv2sa(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
57 static inline void
sa2sv(struct sigvec * sv,const struct sigaction * sa)58 sa2sv(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
65 int
sigvec(int signo,struct sigvec * nsv,struct sigvec * osv)66 sigvec(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
82 int
sigsetmask(int mask)83 sigsetmask(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
97 int
sigblock(int mask)98 sigblock(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
112 int
sigpause(int mask)113 sigpause(int mask)
114 {
115 sigset_t nmask;
116
117 sigemptyset(&nmask);
118 nmask.__bits[0] = mask;
119 return (sigsuspend(&nmask));
120 }
121