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
39MODULE_ID("$Id: sigaction.c,v 1.15 2020/02/02 23:34:34 tom Exp $")
40
41static int
42_nc_sigaction(int sig, sigaction_t * sigact, sigaction_t * osigact)
43{
44    return sigvec(sig, sigact, osigact);
45}
46
47static int
48_nc_sigemptyset(sigset_t * mask)
49{
50    *mask = 0;
51    return 0;
52}
53
54static int
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
73static int
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
82static int
83_nc_sigsuspend(sigset_t * mask)
84{
85    return sigpause(*mask);
86}
87
88static int
89_nc_sigdelset(sigset_t * mask, int sig)
90{
91    *mask &= ~sigmask(sig);
92    return 0;
93}
94
95static int
96_nc_sigismember(sigset_t * mask, int sig)
97{
98    return (*mask & sigmask(sig)) != 0;
99}
100#endif
101