1/*
2 * Copyright (c) 1999-2004 Damien Miller <djm@mindrot.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include "includes.h"
18
19#include <signal.h>
20#include <string.h>
21#include <unistd.h>
22
23#include "openbsd-compat/bsd-signal.h"
24
25#undef signal
26
27mysig_t
28mysignal(int sig, mysig_t act)
29{
30#ifdef HAVE_SIGACTION
31	struct sigaction sa, osa;
32
33	if (sigaction(sig, NULL, &osa) == -1)
34		return (mysig_t) -1;
35	if (osa.sa_handler != act) {
36		memset(&sa, 0, sizeof(sa));
37		sigemptyset(&sa.sa_mask);
38		sa.sa_flags = 0;
39#ifdef SA_INTERRUPT
40		if (sig == SIGALRM)
41			sa.sa_flags |= SA_INTERRUPT;
42#endif
43		sa.sa_handler = act;
44		if (sigaction(sig, &sa, NULL) == -1)
45			return (mysig_t) -1;
46	}
47	return (osa.sa_handler);
48#else
49	return (signal(sig, act));
50#endif
51}
52
53#if !defined(HAVE_STRSIGNAL)
54char *strsignal(int sig)
55{
56	static char buf[16];
57
58	(void)snprintf(buf, sizeof(buf), "%d", sig);
59	return buf;
60}
61#endif
62
63