source: branches/3.2/mindi-busybox/procps/uptime.c @ 3232

Last change on this file since 3232 was 3232, checked in by bruno, 5 years ago
  • Update mindi-busybox to 1.21.1
File size: 2.8 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * Mini uptime implementation for busybox
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Licensed under GPLv2, see file LICENSE in this source tree.
8 */
9
10/* 2011     Pere Orga <gotrunks@gmail.com>
11 *
12 * Added FEATURE_UPTIME_UTMP_SUPPORT flag.
13 */
14
15/* getopt not needed */
16
17//config:config UPTIME
18//config:   bool "uptime"
19//config:   default y
20//config:   select PLATFORM_LINUX #sysinfo()
21//config:   help
22//config:     uptime gives a one line display of the current time, how long
23//config:     the system has been running, how many users are currently logged
24//config:     on, and the system load averages for the past 1, 5, and 15 minutes.
25//config:
26//config:config FEATURE_UPTIME_UTMP_SUPPORT
27//config:   bool "Support for showing the number of users"
28//config:   default y
29//config:   depends on UPTIME && FEATURE_UTMP
30//config:   help
31//config:     Makes uptime display the number of users currently logged on.
32
33//usage:#define uptime_trivial_usage
34//usage:       ""
35//usage:#define uptime_full_usage "\n\n"
36//usage:       "Display the time since the last boot"
37//usage:
38//usage:#define uptime_example_usage
39//usage:       "$ uptime\n"
40//usage:       "  1:55pm  up  2:30, load average: 0.09, 0.04, 0.00\n"
41
42#include "libbb.h"
43#ifdef __linux__
44# include <sys/sysinfo.h>
45#endif
46
47
48#ifndef FSHIFT
49# define FSHIFT 16              /* nr of bits of precision */
50#endif
51#define FIXED_1      (1 << FSHIFT)     /* 1.0 as fixed-point */
52#define LOAD_INT(x)  (unsigned)((x) >> FSHIFT)
53#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1 - 1)) * 100)
54
55
56int uptime_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
57int uptime_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
58{
59    unsigned updays, uphours, upminutes;
60    struct sysinfo info;
61    struct tm *current_time;
62    time_t current_secs;
63
64    time(&current_secs);
65    current_time = localtime(&current_secs);
66
67    sysinfo(&info);
68
69    printf(" %02u:%02u:%02u up ",
70            current_time->tm_hour, current_time->tm_min, current_time->tm_sec);
71    updays = (unsigned) info.uptime / (unsigned)(60*60*24);
72    if (updays)
73        printf("%u day%s, ", updays, (updays != 1) ? "s" : "");
74    upminutes = (unsigned) info.uptime / (unsigned)60;
75    uphours = (upminutes / (unsigned)60) % (unsigned)24;
76    upminutes %= 60;
77    if (uphours)
78        printf("%2u:%02u", uphours, upminutes);
79    else
80        printf("%u min", upminutes);
81
82#if ENABLE_FEATURE_UPTIME_UTMP_SUPPORT
83    {
84        struct utmp *ut;
85        unsigned users = 0;
86        while ((ut = getutent()) != NULL) {
87            if ((ut->ut_type == USER_PROCESS) && (ut->ut_name[0] != '\0'))
88                users++;
89        }
90        printf(",  %u users", users);
91    }
92#endif
93
94    printf(",  load average: %u.%02u, %u.%02u, %u.%02u\n",
95            LOAD_INT(info.loads[0]), LOAD_FRAC(info.loads[0]),
96            LOAD_INT(info.loads[1]), LOAD_FRAC(info.loads[1]),
97            LOAD_INT(info.loads[2]), LOAD_FRAC(info.loads[2]));
98
99    return EXIT_SUCCESS;
100}
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