1 /****************************************************************************
2 * Copyright (c) 1998-2002,2003 Free Software Foundation, Inc. *
3 * *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
22 * *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
26 * authorization. *
27 ****************************************************************************/
28
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1996-2003 *
33 ****************************************************************************/
34
35 /* This file provides sigaction() emulation using sigvec() */
36 /* Use only if this is non POSIX system */
37
38 MODULE_ID("$Id: sigaction.c,v 1.14 2003/12/07 01:06:52 tom Exp $")
39
40 static int
_nc_sigaction(int sig,sigaction_t * sigact,sigaction_t * osigact)41 _nc_sigaction(int sig, sigaction_t * sigact, sigaction_t * osigact)
42 {
43 return sigvec(sig, sigact, osigact);
44 }
45
46 static int
_nc_sigemptyset(sigset_t * mask)47 _nc_sigemptyset(sigset_t * mask)
48 {
49 *mask = 0;
50 return 0;
51 }
52
53 static int
_nc_sigprocmask(int mode,sigset_t * mask,sigset_t * omask)54 _nc_sigprocmask(int mode, sigset_t * mask, sigset_t * omask)
55 {
56 sigset_t current = sigsetmask(0);
57
58 if (omask)
59 *omask = current;
60
61 if (mode == SIG_BLOCK)
62 current |= *mask;
63 else if (mode == SIG_UNBLOCK)
64 current &= ~*mask;
65 else if (mode == SIG_SETMASK)
66 current = *mask;
67
68 sigsetmask(current);
69 return 0;
70 }
71
72 static int
_nc_sigaddset(sigset_t * mask,int sig)73 _nc_sigaddset(sigset_t * mask, int sig)
74 {
75 *mask |= sigmask(sig);
76 return 0;
77 }
78
79 /* not used in lib_tstp.c */
80 #if 0
81 static int
82 _nc_sigsuspend(sigset_t * mask)
83 {
84 return sigpause(*mask);
85 }
86
87 static int
88 _nc_sigdelset(sigset_t * mask, int sig)
89 {
90 *mask &= ~sigmask(sig);
91 return 0;
92 }
93
94 static int
95 _nc_sigismember(sigset_t * mask, int sig)
96 {
97 return (*mask & sigmask(sig)) != 0;
98 }
99 #endif
100