mirror of
https://github.com/sheumann/hush.git
synced 2024-11-05 06:07:00 +00:00
107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
/* 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 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 "libbb.h"
|
|
|
|
/* This is a NOFORK applet. Be very careful! */
|
|
|
|
|
|
#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 ENABLE_FEATURE_FLOAT_SLEEP
|
|
double duration;
|
|
struct timespec ts;
|
|
#else
|
|
unsigned duration;
|
|
#endif
|
|
|
|
++argv;
|
|
if (!*argv)
|
|
bb_show_usage();
|
|
|
|
#if ENABLE_FEATURE_FLOAT_SLEEP
|
|
|
|
duration = 0;
|
|
do {
|
|
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] = 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;
|
|
}
|
|
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;
|
|
}
|