1/*
2 * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include <config.h>
35
36#include <signal.h>
37#include "roken.h"
38
39/*
40 * We would like to always use this signal but there is a link error
41 * on NEXTSTEP
42 */
43#if !defined(NeXT) && !defined(__APPLE__)
44/*
45 * Bugs:
46 *
47 * Do we need any extra hacks for SIGCLD and/or SIGCHLD?
48 */
49
50ROKEN_LIB_FUNCTION SigAction ROKEN_LIB_CALL
51signal(int iSig, SigAction pAction)
52{
53    struct sigaction saNew, saOld;
54
55    saNew.sa_handler = pAction;
56    sigemptyset(&saNew.sa_mask);
57    saNew.sa_flags = 0;
58
59    if (iSig == SIGALRM)
60	{
61#ifdef SA_INTERRUPT
62	    saNew.sa_flags |= SA_INTERRUPT;
63#endif
64	}
65    else
66	{
67#ifdef SA_RESTART
68	    saNew.sa_flags |= SA_RESTART;
69#endif
70	}
71
72    if (sigaction(iSig, &saNew, &saOld) < 0)
73	return(SIG_ERR);
74
75    return(saOld.sa_handler);
76}
77#endif
78