*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-
-/* 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 */
-
/* 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"
+//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.
+//config:
+//config:config FEATURE_FLOAT_SLEEP
+//config: bool "Enable fractional arguments"
+//config: default y
+//config: depends on FEATURE_FANCY_SLEEP
+//config: help
+//config: Allow for fractional numeric parameters.
+
+/* 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-$(CONFIG_SLEEP) += sleep.o
+
+/* BB_AUDIT SUSv3 compliant */
+/* BB_AUDIT GNU issues -- fancy version matches except args must be ints. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/sleep.html */
+
+//usage:#define sleep_trivial_usage
+//usage: IF_FEATURE_FANCY_SLEEP("[") "N" IF_FEATURE_FANCY_SLEEP("]...")
+//usage:#define sleep_full_usage "\n\n"
+//usage: IF_NOT_FEATURE_FANCY_SLEEP("Pause for N seconds")
+//usage: IF_FEATURE_FANCY_SLEEP(
+//usage: "Pause for a time equal to the total of the args given, where each arg can\n"
+//usage: "have an optional suffix of (s)econds, (m)inutes, (h)ours, or (d)ays")
+//usage:
+//usage:#define sleep_example_usage
+//usage: "$ 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 <stdlib.h>
-#include <limits.h>
-#include <unistd.h>
-#include "busybox.h"
+#include "libbb.h"
-#ifdef CONFIG_FEATURE_FANCY_SLEEP
-static const struct suffix_mult sleep_suffixes[] = {
+#if ENABLE_FEATURE_FANCY_SLEEP || ENABLE_FEATURE_FLOAT_SLEEP
+static const struct suffix_mult sfx[] = {
{ "s", 1 },
{ "m", 60 },
{ "h", 60*60 },
{ "d", 24*60*60 },
- { NULL, 0 }
+ { "", 0 }
};
#endif
-int sleep_main(int argc, char **argv)
+int sleep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int sleep_main(int argc UNUSED_PARAM, char **argv)
{
- unsigned int duration;
-
-#ifdef CONFIG_FEATURE_FANCY_SLEEP
+#if ENABLE_FEATURE_FLOAT_SLEEP
+ double duration;
+ struct timespec ts;
+#else
+ unsigned duration;
+#endif
- if (argc < 2) {
+ ++argv;
+ if (!*argv)
bb_show_usage();
- }
- ++argv;
+#if ENABLE_FEATURE_FLOAT_SLEEP
+
+# if ENABLE_LOCALE_SUPPORT
+ /* undo busybox.c setlocale */
+ setlocale(LC_NUMERIC, "C");
+# endif
duration = 0;
do {
- duration += bb_xgetularg_bnd_sfx(*argv, 10,
- 0, UINT_MAX-duration,
- sleep_suffixes);
+ char *arg = *argv;
+ if (strchr(arg, '.')) {
+ double d;
+ char *pp;
+ int len = strspn(arg, "0123456789.");
+ char sv = arg[len];
+ arg[len] = '\0';
+ errno = 0;
+ d = strtod(arg, &pp);
+ if (errno || *pp)
+ bb_show_usage();
+ arg += len;
+ *arg-- = sv;
+ sv = *arg;
+ *arg = '1';
+ duration += d * xatoul_sfx(arg, sfx);
+ *arg = sv;
+ } else {
+ duration += xatoul_sfx(arg, sfx);
+ }
} while (*++argv);
-#else /* CONFIG_FEATURE_FANCY_SLEEP */
-
- if (argc != 2) {
- bb_show_usage();
+ ts.tv_sec = MAXINT(typeof(ts.tv_sec));
+ ts.tv_nsec = 0;
+ if (duration >= 0 && duration < ts.tv_sec) {
+ ts.tv_sec = duration;
+ ts.tv_nsec = (duration - ts.tv_sec) * 1000000000;
}
+ do {
+ errno = 0;
+ nanosleep(&ts, &ts);
+ } while (errno == EINTR);
-#if UINT_MAX == ULONG_MAX
- duration = bb_xgetularg10(argv[1]);
-#else
- duration = bb_xgetularg10_bnd(argv[1], 0, UINT_MAX);
-#endif
+#elif ENABLE_FEATURE_FANCY_SLEEP
-#endif /* CONFIG_FEATURE_FANCY_SLEEP */
+ duration = 0;
+ do {
+ duration += xatou_range_sfx(*argv, 0, UINT_MAX - duration, sfx);
+ } while (*++argv);
+ sleep(duration);
- if (sleep(duration)) {
- bb_perror_nomsg_and_die();
- }
+#else /* simple */
+
+ duration = xatou(*argv);
+ sleep(duration);
+ // Off. If it's really needed, provide example why
+ //if (sleep(duration)) {
+ // bb_perror_nomsg_and_die();
+ //}
+
+#endif
return EXIT_SUCCESS;
}