| /* vi: set sw=4 ts=4: */ |
| /* |
| * sleep implementation for busybox |
| * |
| * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org> |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| */ |
| /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) |
| * |
| * Rewritten to do proper arg and error checking. |
| * Also, added a 'fancy' configuration to accept multiple args with |
| * time suffixes for seconds, minutes, hours, and days. |
| */ |
| //config:config SLEEP |
| //config: bool "sleep (2 kb)" |
| //config: default y |
| //config: help |
| //config: sleep is used to pause for a specified number of seconds. |
| //config: It comes in 3 versions: |
| //config: - small: takes one integer parameter |
| //config: - fancy: takes multiple integer arguments with suffixes: |
| //config: sleep 1d 2h 3m 15s |
| //config: - fancy with fractional numbers: |
| //config: sleep 2.3s 4.5h sleeps for 16202.3 seconds |
| //config: Last one is "the most compatible" with coreutils sleep, |
| //config: but it adds around 1k of code. |
| //config: |
| //config:config FEATURE_FANCY_SLEEP |
| //config: bool "Enable multiple arguments and s/m/h/d suffixes" |
| //config: default y |
| //config: depends on SLEEP |
| //config: help |
| //config: Allow sleep to pause for specified minutes, hours, and days. |
| |
| /* Do not make this applet NOFORK. It breaks ^C-ing of pauses in shells */ |
| //applet:IF_SLEEP(APPLET(sleep, BB_DIR_BIN, BB_SUID_DROP)) |
| |
| //kbuild:lib-$(CONFIG_SLEEP) += sleep.o |
| //kbuild:lib-$(CONFIG_ASH_SLEEP) += sleep.o |
| |
| /* BB_AUDIT SUSv3 compliant */ |
| /* BB_AUDIT GNU issues -- fancy version matches except args must be ints. */ |
| /* http://www.opengroup.org/onlinepubs/007904975/utilities/sleep.html */ |
| |
| //usage:#define sleep_trivial_usage |
| //usage: IF_FEATURE_FANCY_SLEEP("[") "N" IF_FEATURE_FANCY_SLEEP("]...") |
| //usage:#define sleep_full_usage "\n\n" |
| //usage: IF_NOT_FEATURE_FANCY_SLEEP("Pause for N seconds") |
| //usage: IF_FEATURE_FANCY_SLEEP( |
| //usage: "Pause for a time equal to the total of the args given, where each arg can\n" |
| //usage: "have an optional suffix of (s)econds, (m)inutes, (h)ours, or (d)ays") |
| //usage: |
| //usage:#define sleep_example_usage |
| //usage: "$ sleep 2\n" |
| //usage: "[2 second delay results]\n" |
| //usage: IF_FEATURE_FANCY_SLEEP( |
| //usage: "$ sleep 1d 3h 22m 8s\n" |
| //usage: "[98528 second delay results]\n") |
| |
| #include "libbb.h" |
| |
| int sleep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int sleep_main(int argc UNUSED_PARAM, char **argv) |
| { |
| duration_t duration; |
| |
| ++argv; |
| if (!*argv) |
| bb_show_usage(); |
| |
| /* GNU sleep accepts "inf", "INF", "infinity" and "INFINITY" */ |
| if (strncasecmp(argv[0], "inf", 3) == 0) |
| for (;;) |
| sleep(INT_MAX); |
| |
| #if ENABLE_FEATURE_FANCY_SLEEP |
| duration = 0; |
| do { |
| duration += parse_duration_str(*argv); |
| } while (*++argv); |
| sleep_for_duration(duration); |
| #else /* simple */ |
| duration = xatou(*argv); |
| sleep(duration); |
| #endif |
| return EXIT_SUCCESS; |
| } |