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3e6325a6 | 1 | /* $OpenBSD: sigaction.c,v 1.4 2001/01/22 18:01:48 millert Exp $ */ |
5bf9cfe9 | 2 | |
3 | /**************************************************************************** | |
3e6325a6 | 4 | * Copyright (c) 1998,2000 Free Software Foundation, Inc. * |
5bf9cfe9 | 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 | ||
f6d4fb87 | 36 | /* OPENBSD ORIGINAL: lib/libcurses/base/sigaction.c */ |
37 | ||
17962c40 | 38 | #include "includes.h" |
add357c6 | 39 | #include <errno.h> |
d8d6c87e | 40 | #include <signal.h> |
8f0b3553 | 41 | #include "sigact.h" |
5bf9cfe9 | 42 | |
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 | ||
48 | int | |
49 | sigaction(int sig, struct sigaction *sigact, struct sigaction *osigact) | |
50 | { | |
add357c6 | 51 | return sigvec(sig, sigact ? &sigact->sv : NULL, |
52 | osigact ? &osigact->sv : NULL); | |
5bf9cfe9 | 53 | } |
54 | ||
55 | int | |
add357c6 | 56 | sigemptyset (sigset_t *mask) |
5bf9cfe9 | 57 | { |
add357c6 | 58 | if (!mask) { |
59 | errno = EINVAL; | |
60 | return -1; | |
61 | } | |
5bf9cfe9 | 62 | *mask = 0; |
63 | return 0; | |
64 | } | |
65 | ||
66 | int | |
add357c6 | 67 | sigprocmask (int mode, sigset_t *mask, sigset_t *omask) |
5bf9cfe9 | 68 | { |
69 | sigset_t current = sigsetmask(0); | |
70 | ||
add357c6 | 71 | if (!mask) { |
72 | errno = EINVAL; | |
73 | return -1; | |
74 | } | |
5bf9cfe9 | 75 | |
add357c6 | 76 | if (omask) |
77 | *omask = current; | |
78 | ||
79 | if (mode == SIG_BLOCK) | |
5bf9cfe9 | 80 | current |= *mask; |
add357c6 | 81 | else if (mode == SIG_UNBLOCK) |
5bf9cfe9 | 82 | current &= ~*mask; |
add357c6 | 83 | else if (mode == SIG_SETMASK) |
5bf9cfe9 | 84 | current = *mask; |
85 | ||
86 | sigsetmask(current); | |
87 | return 0; | |
88 | } | |
89 | ||
90 | int | |
add357c6 | 91 | sigsuspend (sigset_t *mask) |
5bf9cfe9 | 92 | { |
add357c6 | 93 | if (!mask) { |
94 | errno = EINVAL; | |
95 | return -1; | |
96 | } | |
5bf9cfe9 | 97 | return sigpause(*mask); |
98 | } | |
99 | ||
100 | int | |
add357c6 | 101 | sigdelset (sigset_t *mask, int sig) |
5bf9cfe9 | 102 | { |
add357c6 | 103 | if (!mask) { |
104 | errno = EINVAL; | |
105 | return -1; | |
106 | } | |
5bf9cfe9 | 107 | *mask &= ~sigmask(sig); |
108 | return 0; | |
109 | } | |
110 | ||
111 | int | |
add357c6 | 112 | sigaddset (sigset_t *mask, int sig) |
5bf9cfe9 | 113 | { |
add357c6 | 114 | if (!mask) { |
115 | errno = EINVAL; | |
116 | return -1; | |
117 | } | |
5bf9cfe9 | 118 | *mask |= sigmask(sig); |
119 | return 0; | |
120 | } | |
121 | ||
122 | int | |
add357c6 | 123 | sigismember (sigset_t *mask, int sig) |
5bf9cfe9 | 124 | { |
add357c6 | 125 | if (!mask) { |
126 | errno = EINVAL; | |
127 | return -1; | |
128 | } | |
5bf9cfe9 | 129 | return (*mask & sigmask(sig)) != 0; |
130 | } | |
131 | ||
132 | #endif |