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/* vi: set sw=4 ts=4: */
/*
* Mini uptime implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
/* 2011 Pere Orga <gotrunks@gmail.com>
*
* Added FEATURE_UPTIME_UTMP_SUPPORT flag.
*/
//config:config UPTIME
//config: bool "uptime (3.7 kb)"
//config: default y
//config: help
//config: uptime gives a one line display of the current time, how long
//config: the system has been running, how many users are currently logged
//config: on, and the system load averages for the past 1, 5, and 15 minutes.
//config:
//config:config FEATURE_UPTIME_UTMP_SUPPORT
//config: bool "Show the number of users"
//config: default y
//config: depends on UPTIME && FEATURE_UTMP
//config: help
//config: Display the number of users currently logged on.
//applet:IF_UPTIME(APPLET_NOEXEC(uptime, uptime, BB_DIR_USR_BIN, BB_SUID_DROP, uptime))
//kbuild:lib-$(CONFIG_UPTIME) += uptime.o
//usage:#define uptime_trivial_usage
//usage: ""
//usage:#define uptime_full_usage "\n\n"
//usage: "Display the time since the last boot"
//usage:
//usage:#define uptime_example_usage
//usage: "$ uptime\n"
//usage: " 1:55pm up 2:30, load average: 0.09, 0.04, 0.00\n"
#include "libbb.h"
#ifdef __linux__
# include <sys/sysinfo.h>
#endif
#ifndef FSHIFT
# define FSHIFT 16 /* nr of bits of precision */
#endif
#define FIXED_1 (1 << FSHIFT) /* 1.0 as fixed-point */
#define LOAD_INT(x) (unsigned)((x) >> FSHIFT)
#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1 - 1)) * 100)
int uptime_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int uptime_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
unsigned updays, uphours, upminutes;
unsigned opts;
struct sysinfo info;
struct tm *current_time;
time_t current_secs;
opts = getopt32(argv, "s");
time(¤t_secs);
sysinfo(&info);
if (opts) // -s
current_secs -= info.uptime;
current_time = localtime(¤t_secs);
if (opts) { // -s
printf("%04u-%02u-%02u %02u:%02u:%02u\n",
current_time->tm_year + 1900, current_time->tm_mon + 1, current_time->tm_mday,
current_time->tm_hour, current_time->tm_min, current_time->tm_sec
);
/* The above way of calculating boot time is wobbly,
* info.uptime has only 1 second precision, which makes
* "uptime -s" wander +- one second.
* /proc/uptime may be better, it has 0.01s precision.
*/
return EXIT_SUCCESS;
}
printf(" %02u:%02u:%02u up ",
current_time->tm_hour, current_time->tm_min, current_time->tm_sec
);
updays = (unsigned) info.uptime / (unsigned)(60*60*24);
if (updays != 0)
printf("%u day%s, ", updays, (updays != 1) ? "s" : "");
upminutes = (unsigned) info.uptime / (unsigned)60;
uphours = (upminutes / (unsigned)60) % (unsigned)24;
upminutes %= 60;
if (uphours != 0)
printf("%2u:%02u", uphours, upminutes);
else
printf("%u min", upminutes);
#if ENABLE_FEATURE_UPTIME_UTMP_SUPPORT
{
struct utmpx *ut;
unsigned users = 0;
while ((ut = getutxent()) != NULL) {
if ((ut->ut_type == USER_PROCESS) && (ut->ut_user[0] != '\0'))
users++;
}
printf(", %u users", users);
}
#endif
printf(", load average: %u.%02u, %u.%02u, %u.%02u\n",
LOAD_INT(info.loads[0]), LOAD_FRAC(info.loads[0]),
LOAD_INT(info.loads[1]), LOAD_FRAC(info.loads[1]),
LOAD_INT(info.loads[2]), LOAD_FRAC(info.loads[2]));
return EXIT_SUCCESS;
}
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