1/* vi: set sw=4 ts=4: */
2/*
3 * sleep implementation for busybox
4 *
5 * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10/* BB_AUDIT SUSv3 compliant */
11/* BB_AUDIT GNU issues -- fancy version matches except args must be ints. */
12/* http://www.opengroup.org/onlinepubs/007904975/utilities/sleep.html */
13
14/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
15 *
16 * Rewritten to do proper arg and error checking.
17 * Also, added a 'fancy' configuration to accept multiple args with
18 * time suffixes for seconds, minutes, hours, and days.
19 */
20
21#include "libbb.h"
22
23/* This is a NOFORK applet. Be very careful! */
24
25
26#if ENABLE_FEATURE_FANCY_SLEEP
27static const struct suffix_mult sfx[] = {
28	{ "s", 1 },
29	{ "m", 60 },
30	{ "h", 60*60 },
31	{ "d", 24*60*60 },
32	{ }
33};
34#endif
35
36int sleep_main(int argc, char **argv);
37int sleep_main(int argc, char **argv)
38{
39	unsigned duration;
40
41#if ENABLE_FEATURE_FANCY_SLEEP
42
43	if (argc < 2) {
44		bb_show_usage();
45	}
46
47	++argv;
48	duration = 0;
49	do {
50		duration += xatoul_range_sfx(*argv, 0, UINT_MAX-duration, sfx);
51	} while (*++argv);
52
53#else  /* FEATURE_FANCY_SLEEP */
54
55	if (argc != 2) {
56		bb_show_usage();
57	}
58
59	duration = xatou(argv[1]);
60
61#endif /* FEATURE_FANCY_SLEEP */
62
63	if (sleep(duration)) {
64		bb_perror_nomsg_and_die();
65	}
66
67	return EXIT_SUCCESS;
68}
69