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