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