/* vi: set sw=4 ts=4: */
/*
- * Mini sleep implementation for busybox
+ * sleep implementation for busybox
*
+ * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
- * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* 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.
*/
-#include "internal.h"
-#include <stdio.h>
+#include "libbb.h"
+
+/* This is a NOFORK applet. Be very careful! */
+
-extern int sleep_main(int argc, char **argv)
+#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 },
+ { }
+};
+#endif
+
+int sleep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int sleep_main(int argc UNUSED_PARAM, char **argv)
{
- if ((argc < 2) || (**(argv + 1) == '-')) {
- usage(sleep_usage);
- }
+#if ENABLE_FEATURE_FLOAT_SLEEP
+ double duration;
+ struct timespec ts;
+#else
+ unsigned duration;
+#endif
- if (sleep(atoi(*(++argv))) != 0) {
- perror("sleep");
- exit(FALSE);
+ ++argv;
+ if (!*argv)
+ bb_show_usage();
+
+#if ENABLE_FEATURE_FLOAT_SLEEP
+
+ duration = 0;
+ do {
+ char *arg = *argv;
+ if (strchr(arg, '.')) {
+ double d;
+ int len = strspn(arg, "0123456789.");
+ char sv = arg[len];
+ arg[len] = '\0';
+ d = bb_strtod(arg, NULL);
+ if (errno)
+ bb_show_usage();
+ arg[len] = sv;
+ len--;
+ sv = arg[len];
+ arg[len] = '1';
+ duration += d * xatoul_sfx(&arg[len], sfx);
+ arg[len] = sv;
+ } else
+ duration += xatoul_sfx(arg, sfx);
+ } while (*++argv);
+
+ 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;
}
- return(TRUE);
+ do {
+ errno = 0;
+ nanosleep(&ts, &ts);
+ } while (errno == EINTR);
+
+#elif ENABLE_FEATURE_FANCY_SLEEP
+
+ duration = 0;
+ do {
+ duration += xatou_range_sfx(*argv, 0, UINT_MAX - duration, sfx);
+ } while (*++argv);
+ sleep(duration);
+
+#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;
}