blob: d67845cf1a5466803b4357e2d71e89aecc3597a6 [file] [log] [blame]
Darren Tucker30d69742005-11-10 19:29:12 +11001/* $OpenBSD: sigaction.c,v 1.4 2001/01/22 18:01:48 millert Exp $ */
Damien Miller31abc9a2000-07-09 23:26:27 +10002
3/****************************************************************************
Darren Tucker30d69742005-11-10 19:29:12 +11004 * Copyright (c) 1998,2000 Free Software Foundation, Inc. *
Damien Miller31abc9a2000-07-09 23:26:27 +10005 * *
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
Darren Tucker7f24a0e2005-11-10 16:18:56 +110036/* OPENBSD ORIGINAL: lib/libcurses/base/sigaction.c */
37
Ben Lindstromdd21fe92002-06-27 18:23:20 +000038#include "includes.h"
Damien Miller8b7ab962008-06-15 10:55:34 +100039#include <errno.h>
Ben Lindstrom819f1be2001-09-29 14:27:00 +000040#include <signal.h>
Ben Lindstrom803f16c2001-02-24 00:24:19 +000041#include "sigact.h"
Damien Miller31abc9a2000-07-09 23:26:27 +100042
43/* This file provides sigaction() emulation using sigvec() */
44/* Use only if this is non POSIX system */
45
46#if !HAVE_SIGACTION && HAVE_SIGVEC
47
48int
49sigaction(int sig, struct sigaction *sigact, struct sigaction *osigact)
50{
Damien Miller8b7ab962008-06-15 10:55:34 +100051 return sigvec(sig, sigact ? &sigact->sv : NULL,
52 osigact ? &osigact->sv : NULL);
Damien Miller31abc9a2000-07-09 23:26:27 +100053}
54
55int
Damien Miller8b7ab962008-06-15 10:55:34 +100056sigemptyset (sigset_t *mask)
Damien Miller31abc9a2000-07-09 23:26:27 +100057{
Damien Miller8b7ab962008-06-15 10:55:34 +100058 if (!mask) {
59 errno = EINVAL;
60 return -1;
61 }
Damien Miller31abc9a2000-07-09 23:26:27 +100062 *mask = 0;
63 return 0;
64}
65
66int
Damien Miller8b7ab962008-06-15 10:55:34 +100067sigprocmask (int mode, sigset_t *mask, sigset_t *omask)
Damien Miller31abc9a2000-07-09 23:26:27 +100068{
69 sigset_t current = sigsetmask(0);
70
Damien Miller8b7ab962008-06-15 10:55:34 +100071 if (!mask) {
72 errno = EINVAL;
73 return -1;
74 }
Damien Miller31abc9a2000-07-09 23:26:27 +100075
Damien Miller8b7ab962008-06-15 10:55:34 +100076 if (omask)
77 *omask = current;
78
79 if (mode == SIG_BLOCK)
Damien Miller31abc9a2000-07-09 23:26:27 +100080 current |= *mask;
Damien Miller8b7ab962008-06-15 10:55:34 +100081 else if (mode == SIG_UNBLOCK)
Damien Miller31abc9a2000-07-09 23:26:27 +100082 current &= ~*mask;
Damien Miller8b7ab962008-06-15 10:55:34 +100083 else if (mode == SIG_SETMASK)
Damien Miller31abc9a2000-07-09 23:26:27 +100084 current = *mask;
85
86 sigsetmask(current);
87 return 0;
88}
89
90int
Damien Miller8b7ab962008-06-15 10:55:34 +100091sigsuspend (sigset_t *mask)
Damien Miller31abc9a2000-07-09 23:26:27 +100092{
Damien Miller8b7ab962008-06-15 10:55:34 +100093 if (!mask) {
94 errno = EINVAL;
95 return -1;
96 }
Damien Miller31abc9a2000-07-09 23:26:27 +100097 return sigpause(*mask);
98}
99
100int
Damien Miller8b7ab962008-06-15 10:55:34 +1000101sigdelset (sigset_t *mask, int sig)
Damien Miller31abc9a2000-07-09 23:26:27 +1000102{
Damien Miller8b7ab962008-06-15 10:55:34 +1000103 if (!mask) {
104 errno = EINVAL;
105 return -1;
106 }
Damien Miller31abc9a2000-07-09 23:26:27 +1000107 *mask &= ~sigmask(sig);
108 return 0;
109}
110
111int
Damien Miller8b7ab962008-06-15 10:55:34 +1000112sigaddset (sigset_t *mask, int sig)
Damien Miller31abc9a2000-07-09 23:26:27 +1000113{
Damien Miller8b7ab962008-06-15 10:55:34 +1000114 if (!mask) {
115 errno = EINVAL;
116 return -1;
117 }
Damien Miller31abc9a2000-07-09 23:26:27 +1000118 *mask |= sigmask(sig);
119 return 0;
120}
121
122int
Damien Miller8b7ab962008-06-15 10:55:34 +1000123sigismember (sigset_t *mask, int sig)
Damien Miller31abc9a2000-07-09 23:26:27 +1000124{
Damien Miller8b7ab962008-06-15 10:55:34 +1000125 if (!mask) {
126 errno = EINVAL;
127 return -1;
128 }
Damien Miller31abc9a2000-07-09 23:26:27 +1000129 return (*mask & sigmask(sig)) != 0;
130}
131
132#endif