[3320] | 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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| 7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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| 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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| 21 | #include "libbb.h"
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| 22 |
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| 23 | /* Do not make this applet NOFORK. It breaks ^C-ing of pauses in shells */
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| 24 |
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| 25 |
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| 26 | #if ENABLE_FEATURE_FANCY_SLEEP || ENABLE_FEATURE_FLOAT_SLEEP
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| 27 | static const struct suffix_mult sfx[] = {
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| 28 | { "s", 1 },
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| 29 | { "m", 60 },
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| 30 | { "h", 60*60 },
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| 31 | { "d", 24*60*60 },
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| 32 | { "", 0 }
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| 33 | };
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| 34 | #endif
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| 35 |
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| 36 | int sleep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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| 37 | int sleep_main(int argc UNUSED_PARAM, char **argv)
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| 38 | {
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| 39 | #if ENABLE_FEATURE_FLOAT_SLEEP
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| 40 | double duration;
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| 41 | struct timespec ts;
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| 42 | #else
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| 43 | unsigned duration;
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| 44 | #endif
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| 45 |
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| 46 | ++argv;
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| 47 | if (!*argv)
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| 48 | bb_show_usage();
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| 49 |
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| 50 | #if ENABLE_FEATURE_FLOAT_SLEEP
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| 51 |
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| 52 | # if ENABLE_LOCALE_SUPPORT
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| 53 | /* undo busybox.c setlocale */
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| 54 | setlocale(LC_NUMERIC, "C");
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| 55 | # endif
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| 56 | duration = 0;
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| 57 | do {
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| 58 | char *arg = *argv;
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| 59 | if (strchr(arg, '.')) {
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| 60 | double d;
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| 61 | char *pp;
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| 62 | int len = strspn(arg, "0123456789.");
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| 63 | char sv = arg[len];
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| 64 | arg[len] = '\0';
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| 65 | errno = 0;
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| 66 | d = strtod(arg, &pp);
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| 67 | if (errno || *pp)
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| 68 | bb_show_usage();
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| 69 | arg += len;
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| 70 | *arg-- = sv;
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| 71 | sv = *arg;
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| 72 | *arg = '1';
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| 73 | duration += d * xatoul_sfx(arg, sfx);
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| 74 | *arg = sv;
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| 75 | } else {
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| 76 | duration += xatoul_sfx(arg, sfx);
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| 77 | }
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| 78 | } while (*++argv);
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| 79 |
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| 80 | ts.tv_sec = MAXINT(typeof(ts.tv_sec));
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| 81 | ts.tv_nsec = 0;
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| 82 | if (duration >= 0 && duration < ts.tv_sec) {
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| 83 | ts.tv_sec = duration;
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| 84 | ts.tv_nsec = (duration - ts.tv_sec) * 1000000000;
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| 85 | }
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| 86 | do {
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| 87 | errno = 0;
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| 88 | nanosleep(&ts, &ts);
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| 89 | } while (errno == EINTR);
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| 90 |
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| 91 | #elif ENABLE_FEATURE_FANCY_SLEEP
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| 92 |
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| 93 | duration = 0;
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| 94 | do {
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| 95 | duration += xatou_range_sfx(*argv, 0, UINT_MAX - duration, sfx);
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| 96 | } while (*++argv);
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| 97 | sleep(duration);
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| 98 |
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| 99 | #else /* simple */
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| 100 |
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| 101 | duration = xatou(*argv);
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| 102 | sleep(duration);
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| 103 | // Off. If it's really needed, provide example why
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| 104 | //if (sleep(duration)) {
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| 105 | // bb_perror_nomsg_and_die();
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| 106 | //}
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| 107 |
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| 108 | #endif
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| 109 |
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| 110 | return EXIT_SUCCESS;
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| 111 | }
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