LXR toybox/toys/other/uptime.c

   1/* uptime.c - Tell how long the system has been running.
   2 *
   3 * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
   4 * Copyright 2012 Luis Felipe Strano Moraes <lfelipe@profusion.mobi>
   5 * Copyright 2013 Jeroen van Rijn <jvrnix@gmail.com>
   6
   7USE_UPTIME(NEWTOY(uptime, ">0ps", TOYFLAG_USR|TOYFLAG_BIN))
   8
   9config UPTIME
  10  bool "uptime"
  11  default y
  12  depends on TOYBOX_UTMPX
  13  help
  14    usage: uptime [-ps]
  15
  16    Tell the current time, how long the system has been running, the number
  17    of users, and the system load averages for the past 1, 5 and 15 minutes.
  18
  19    -p  Pretty (human readable) uptime
  20    -s  Since when has the system been up?
  21*/
  22
  23#define FOR_uptime
  24#include "toys.h"
  25
  26void uptime_main(void)
  27{
  28  struct sysinfo info;
  29  time_t t;
  30  struct tm *tm;
  31  unsigned int days, hours, minutes;
  32  struct utmpx *entry;
  33  int users = 0;
  34
  35  // Obtain the data we need.
  36  sysinfo(&info);
  37  time(&t);
  38
  39  // Just show the time of boot?
  40  if (toys.optflags & FLAG_s) {
  41    t -= info.uptime;
  42    tm = localtime(&t);
  43    strftime(toybuf, sizeof(toybuf), "%F %T", tm);
  44    xputs(toybuf);
  45    return;
  46  }
  47
  48  // Current time
  49  tm = localtime(&t);
  50  // Uptime
  51  info.uptime /= 60;
  52  minutes = info.uptime%60;
  53  info.uptime /= 60;
  54  hours = info.uptime%24;
  55  days = info.uptime/24;
  56
  57  if (toys.optflags & FLAG_p) {
  58    int weeks = days/7;
  59    days %= 7;
  60
  61    xprintf("up %d week%s, %d day%s, %d hour%s, %d minute%s\n",
  62        weeks, (weeks!=1)?"s":"",
  63        days, (days!=1)?"s":"",
  64        hours, (hours!=1)?"s":"",
  65        minutes, (minutes!=1)?"s":"");
  66    return;
  67  }
  68
  69  xprintf(" %02d:%02d:%02d up ", tm->tm_hour, tm->tm_min, tm->tm_sec);
  70  if (days) xprintf("%d day%s, ", days, (days!=1)?"s":"");
  71  if (hours) xprintf("%2d:%02d, ", hours, minutes);
  72  else printf("%d min, ", minutes);
  73
  74  // Obtain info about logged on users
  75  setutxent();
  76  while ((entry = getutxent())) if (entry->ut_type == USER_PROCESS) users++;
  77  endutxent();
  78
  79  printf(" %d user%s, ", users, (users!=1) ? "s" : "");
  80  printf(" load average: %.02f, %.02f, %.02f\n", info.loads[0]/65536.0,
  81    info.loads[1]/65536.0, info.loads[2]/65536.0);
  82}
  83