/*
* Mini uptime implementation for busybox
*
- * Copyright (C) 1999,2000 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
- *
- * 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
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
-/* This version of uptime doesn't display the number of users on the system,
- * since busybox init doesn't mess with utmp. For folks using utmp that are
- * just dying to have # of users reported, feel free to write it as some type
- * of BB_FEATURE_UMTP_SUPPORT #define
+/* 2011 Pere Orga <gotrunks@gmail.com>
+ *
+ * Added FEATURE_UPTIME_UTMP_SUPPORT flag.
*/
+//config:config UPTIME
+//config: bool "uptime (632 bytes)"
+//config: default y
+//config: select PLATFORM_LINUX #sysinfo()
+//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-$(CONFIG_UPTIME) += uptime.o
-#include "busybox.h"
-#include <stdio.h>
-#include <time.h>
-#include <errno.h>
+//usage:#define uptime_trivial_usage
+//usage: ""
+//usage:#define uptime_full_usage "\n\n"
+//usage: "Display the time since the last boot"
+//usage:
+//usage:#define uptime_example_usage
+//usage: "$ uptime\n"
+//usage: " 1:55pm up 2:30, load average: 0.09, 0.04, 0.00\n"
-static const int FSHIFT = 16; /* nr of bits of precision */
-#define FIXED_1 (1<<FSHIFT) /* 1.0 as fixed-point */
-#define LOAD_INT(x) ((x) >> FSHIFT)
-#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
+#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)
-extern int uptime_main(int argc, char **argv)
+int uptime_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int uptime_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
- int updays, uphours, upminutes;
+ 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);
- sysinfo(&info);
+ 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(" %2d:%02d%s up ",
- current_time->tm_hour%12 ? current_time->tm_hour%12 : 12,
- current_time->tm_min, current_time->tm_hour > 11 ? "pm" : "am");
- updays = (int) info.uptime / (60*60*24);
- if (updays)
- printf("%d day%s, ", updays, (updays != 1) ? "s" : "");
- upminutes = (int) info.uptime / 60;
- uphours = (upminutes / 60) % 24;
+ 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)
- printf("%2d:%02d, ", uphours, upminutes);
+ if (uphours != 0)
+ printf("%2u:%02u", uphours, upminutes);
else
- printf("%d min, ", upminutes);
+ 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: %ld.%02ld, %ld.%02ld, %ld.%02ld\n",
- LOAD_INT(info.loads[0]), LOAD_FRAC(info.loads[0]),
- LOAD_INT(info.loads[1]), LOAD_FRAC(info.loads[1]),
+ 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;
projects / oweals / busybox.git / blobdiff