1/*
2 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24/*
25 * bsd_signal() function, per POIX 1003.1-2003
26 */
27#include <signal.h>
28
29void
30(*bsd_signal(int sig, void (*func)(int)))(int)
31{
32    struct sigaction act, oact;
33
34
35    act.sa_handler = func;
36    act.sa_flags = SA_RESTART;
37
38    sigemptyset(&act.sa_mask);
39    sigaddset(&act.sa_mask, sig);
40    if (sigaction(sig, &act, &oact) == -1)
41        return(SIG_ERR);
42
43    return(oact.sa_handler);
44}
45