1 /****************************************************************************
2 * Copyright 2020 Thomas E. Dickey *
3 * Copyright 1998-2002,2003 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
27 * authorization. *
28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
32 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
33 * and: Thomas E. Dickey 1996-2003 *
34 ****************************************************************************/
35
36 /* This file provides sigaction() emulation using sigvec() */
37 /* Use only if this is non POSIX system */
38
39 MODULE_ID("$Id: sigaction.c,v 1.15 2020/02/02 23:34:34 tom Exp $")
40
41 static int
_nc_sigaction(int sig,sigaction_t * sigact,sigaction_t * osigact)42 _nc_sigaction(int sig, sigaction_t * sigact, sigaction_t * osigact)
43 {
44 return sigvec(sig, sigact, osigact);
45 }
46
47 static int
_nc_sigemptyset(sigset_t * mask)48 _nc_sigemptyset(sigset_t * mask)
49 {
50 *mask = 0;
51 return 0;
52 }
53
54 static int
_nc_sigprocmask(int mode,sigset_t * mask,sigset_t * omask)55 _nc_sigprocmask(int mode, sigset_t * mask, sigset_t * omask)
56 {
57 sigset_t current = sigsetmask(0);
58
59 if (omask)
60 *omask = current;
61
62 if (mode == SIG_BLOCK)
63 current |= *mask;
64 else if (mode == SIG_UNBLOCK)
65 current &= ~*mask;
66 else if (mode == SIG_SETMASK)
67 current = *mask;
68
69 sigsetmask(current);
70 return 0;
71 }
72
73 static int
_nc_sigaddset(sigset_t * mask,int sig)74 _nc_sigaddset(sigset_t * mask, int sig)
75 {
76 *mask |= sigmask(sig);
77 return 0;
78 }
79
80 /* not used in lib_tstp.c */
81 #if 0
82 static int
83 _nc_sigsuspend(sigset_t * mask)
84 {
85 return sigpause(*mask);
86 }
87
88 static int
89 _nc_sigdelset(sigset_t * mask, int sig)
90 {
91 *mask &= ~sigmask(sig);
92 return 0;
93 }
94
95 static int
96 _nc_sigismember(sigset_t * mask, int sig)
97 {
98 return (*mask & sigmask(sig)) != 0;
99 }
100 #endif
101