1 /* $OpenBSD: sigaction.c,v 1.3 1999/06/27 08:14:21 millert Exp $ */
2
3 /****************************************************************************
4 * Copyright (c) 1998 Free Software Foundation, Inc. *
5 * *
6 * Permission is hereby granted, free of charge, to any person obtaining a *
7 * copy of this software and associated documentation files (the *
8 * "Software"), to deal in the Software without restriction, including *
9 * without limitation the rights to use, copy, modify, merge, publish, *
10 * distribute, distribute with modifications, sublicense, and/or sell *
11 * copies of the Software, and to permit persons to whom the Software is *
12 * furnished to do so, subject to the following conditions: *
13 * *
14 * The above copyright notice and this permission notice shall be included *
15 * in all copies or substantial portions of the Software. *
16 * *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
24 * *
25 * Except as contained in this notice, the name(s) of the above copyright *
26 * holders shall not be used in advertising or otherwise to promote the *
27 * sale, use or other dealings in this Software without prior written *
28 * authorization. *
29 ****************************************************************************/
30
31 /****************************************************************************
32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
33 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
34 ****************************************************************************/
35
36 #include "includes.h"
37 #include <signal.h>
38 #include "sigact.h"
39
40 /* This file provides sigaction() emulation using sigvec() */
41 /* Use only if this is non POSIX system */
42
43 #if !HAVE_SIGACTION && HAVE_SIGVEC
44
45 int
sigaction(int sig,struct sigaction * sigact,struct sigaction * osigact)46 sigaction(int sig, struct sigaction *sigact, struct sigaction *osigact)
47 {
48 return sigvec(sig, &(sigact->sv), &(osigact->sv));
49 }
50
51 int
sigemptyset(sigset_t * mask)52 sigemptyset (sigset_t * mask)
53 {
54 *mask = 0;
55 return 0;
56 }
57
58 int
sigprocmask(int mode,sigset_t * mask,sigset_t * omask)59 sigprocmask (int mode, sigset_t * mask, sigset_t * omask)
60 {
61 sigset_t current = sigsetmask(0);
62
63 if (omask) *omask = current;
64
65 if (mode==SIG_BLOCK)
66 current |= *mask;
67 else if (mode==SIG_UNBLOCK)
68 current &= ~*mask;
69 else if (mode==SIG_SETMASK)
70 current = *mask;
71
72 sigsetmask(current);
73 return 0;
74 }
75
76 int
sigsuspend(sigset_t * mask)77 sigsuspend (sigset_t * mask)
78 {
79 return sigpause(*mask);
80 }
81
82 int
sigdelset(sigset_t * mask,int sig)83 sigdelset (sigset_t * mask, int sig)
84 {
85 *mask &= ~sigmask(sig);
86 return 0;
87 }
88
89 int
sigaddset(sigset_t * mask,int sig)90 sigaddset (sigset_t * mask, int sig)
91 {
92 *mask |= sigmask(sig);
93 return 0;
94 }
95
96 int
sigismember(sigset_t * mask,int sig)97 sigismember (sigset_t * mask, int sig)
98 {
99 return (*mask & sigmask(sig)) != 0;
100 }
101
102 #endif
103
104 #pragma ident "%Z%%M% %I% %E% SMI"
105