[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * sleep implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
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| 6 | *
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[2725] | 7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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[821] | 8 | */
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| 9 |
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| 10 | /* BB_AUDIT SUSv3 compliant */
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| 11 | /* BB_AUDIT GNU issues -- fancy version matches except args must be ints. */
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| 12 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/sleep.html */
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| 13 |
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| 14 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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| 15 | *
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| 16 | * Rewritten to do proper arg and error checking.
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| 17 | * Also, added a 'fancy' configuration to accept multiple args with
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| 18 | * time suffixes for seconds, minutes, hours, and days.
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| 19 | */
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| 20 |
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[3232] | 21 | //usage:#define sleep_trivial_usage
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| 22 | //usage: IF_FEATURE_FANCY_SLEEP("[") "N" IF_FEATURE_FANCY_SLEEP("]...")
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| 23 | //usage:#define sleep_full_usage "\n\n"
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| 24 | //usage: IF_NOT_FEATURE_FANCY_SLEEP("Pause for N seconds")
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| 25 | //usage: IF_FEATURE_FANCY_SLEEP(
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| 26 | //usage: "Pause for a time equal to the total of the args given, where each arg can\n"
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| 27 | //usage: "have an optional suffix of (s)econds, (m)inutes, (h)ours, or (d)ays")
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| 28 | //usage:
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| 29 | //usage:#define sleep_example_usage
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| 30 | //usage: "$ sleep 2\n"
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| 31 | //usage: "[2 second delay results]\n"
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| 32 | //usage: IF_FEATURE_FANCY_SLEEP(
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| 33 | //usage: "$ sleep 1d 3h 22m 8s\n"
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| 34 | //usage: "[98528 second delay results]\n")
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| 35 |
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[1765] | 36 | #include "libbb.h"
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[821] | 37 |
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[2725] | 38 | /* Do not make this applet NOFORK. It breaks ^C-ing of pauses in shells */
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[1765] | 39 |
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| 40 |
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[2725] | 41 | #if ENABLE_FEATURE_FANCY_SLEEP || ENABLE_FEATURE_FLOAT_SLEEP
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[1765] | 42 | static const struct suffix_mult sfx[] = {
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[821] | 43 | { "s", 1 },
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| 44 | { "m", 60 },
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| 45 | { "h", 60*60 },
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| 46 | { "d", 24*60*60 },
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[2725] | 47 | { "", 0 }
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[821] | 48 | };
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| 49 | #endif
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| 50 |
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[2725] | 51 | int sleep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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| 52 | int sleep_main(int argc UNUSED_PARAM, char **argv)
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[821] | 53 | {
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[2725] | 54 | #if ENABLE_FEATURE_FLOAT_SLEEP
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| 55 | double duration;
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| 56 | struct timespec ts;
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| 57 | #else
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[1765] | 58 | unsigned duration;
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[2725] | 59 | #endif
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[821] | 60 |
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[2725] | 61 | ++argv;
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| 62 | if (!*argv)
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[821] | 63 | bb_show_usage();
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| 64 |
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[2725] | 65 | #if ENABLE_FEATURE_FLOAT_SLEEP
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| 66 |
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| 67 | # if ENABLE_LOCALE_SUPPORT
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| 68 | /* undo busybox.c setlocale */
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| 69 | setlocale(LC_NUMERIC, "C");
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| 70 | # endif
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[821] | 71 | duration = 0;
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| 72 | do {
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[2725] | 73 | char *arg = *argv;
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| 74 | if (strchr(arg, '.')) {
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| 75 | double d;
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| 76 | char *pp;
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| 77 | int len = strspn(arg, "0123456789.");
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| 78 | char sv = arg[len];
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| 79 | arg[len] = '\0';
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| 80 | errno = 0;
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| 81 | d = strtod(arg, &pp);
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| 82 | if (errno || *pp)
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| 83 | bb_show_usage();
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| 84 | arg += len;
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| 85 | *arg-- = sv;
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| 86 | sv = *arg;
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| 87 | *arg = '1';
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| 88 | duration += d * xatoul_sfx(arg, sfx);
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| 89 | *arg = sv;
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| 90 | } else {
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| 91 | duration += xatoul_sfx(arg, sfx);
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| 92 | }
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[821] | 93 | } while (*++argv);
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| 94 |
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[2725] | 95 | ts.tv_sec = MAXINT(typeof(ts.tv_sec));
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| 96 | ts.tv_nsec = 0;
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| 97 | if (duration >= 0 && duration < ts.tv_sec) {
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| 98 | ts.tv_sec = duration;
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| 99 | ts.tv_nsec = (duration - ts.tv_sec) * 1000000000;
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[821] | 100 | }
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[2725] | 101 | do {
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| 102 | errno = 0;
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| 103 | nanosleep(&ts, &ts);
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| 104 | } while (errno == EINTR);
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[821] | 105 |
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[2725] | 106 | #elif ENABLE_FEATURE_FANCY_SLEEP
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[821] | 107 |
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[2725] | 108 | duration = 0;
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| 109 | do {
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| 110 | duration += xatou_range_sfx(*argv, 0, UINT_MAX - duration, sfx);
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| 111 | } while (*++argv);
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| 112 | sleep(duration);
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[821] | 113 |
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[2725] | 114 | #else /* simple */
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[821] | 115 |
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[2725] | 116 | duration = xatou(*argv);
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| 117 | sleep(duration);
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| 118 | // Off. If it's really needed, provide example why
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| 119 | //if (sleep(duration)) {
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| 120 | // bb_perror_nomsg_and_die();
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| 121 | //}
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| 122 |
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| 123 | #endif
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| 124 |
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[821] | 125 | return EXIT_SUCCESS;
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| 126 | }
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