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diff --git a/src/uptime.c b/src/uptime.c
new file mode 100644 (file)
index 0000000..82338fd
--- /dev/null
+++ b/src/uptime.c
@@ -0,0 +1,215 @@
+/* GNU's uptime.
+   Copyright (C) 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
+
+   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, 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.  */
+
+/* Written by jla; revised by djm */
+
+#include <config.h>
+#include <getopt.h>
+
+#include "system.h"
+#include "error.h"
+#include "readutmp.h"
+
+/* The name this program was run with. */
+char *program_name;
+
+/* If nonzero, display usage information and exit.  */
+static int show_help;
+
+/* If nonzero, print the version on standard output and exit.  */
+static int show_version;
+
+static struct option const longopts[] =
+{
+  {"help", no_argument, &show_help, 1},
+  {"version", no_argument, &show_version, 1},
+  {NULL, 0, NULL, 0}
+};
+
+static void
+print_uptime (int n)
+{
+  register STRUCT_UTMP *this = utmp_contents;
+  register int entries = 0;
+  time_t boot_time = 0;
+  time_t time_now;
+  time_t uptime = 0;
+  int updays;
+  int uphours;
+  int upmins;
+  struct tm *tmn;
+  double avg[3];
+  int loads;
+#ifdef HAVE_PROC_UPTIME
+  FILE *fp;
+  double upsecs;
+
+  fp = fopen ("/proc/uptime", "r");
+  if (fp != NULL)
+    {
+      char buf[BUFSIZ];
+      int res;
+      fgets(buf, BUFSIZ, fp);
+      res = sscanf (buf, "%lf", &upsecs);
+      if (res == 1)
+       uptime = (time_t) upsecs;
+      fclose (fp);
+    }
+#endif /* HAVE_PROC_UPTIME */
+  /* Loop through all the utmp entries we just read and count up the valid
+     ones, also in the process possibly gleaning boottime. */
+  while (n--)
+    {
+      if (this->ut_name[0]
+#ifdef USER_PROCESS
+         && this->ut_type == USER_PROCESS
+#endif
+         )
+       {
+         ++entries;
+       }
+      /* If BOOT_MSG is defined, we can get boottime from utmp.  This avoids
+        possibly needing special privs to read /dev/kmem. */
+#ifdef BOOT_MSG
+# if HAVE_PROC_UPTIME
+      if (uptime == 0)
+# endif /* HAVE_PROC_UPTIME */
+       if (!strcmp (this->ut_line, BOOT_MSG))
+         boot_time = UT_TIME_MEMBER (this);
+#endif /* BOOT_MSG */
+      ++this;
+  }
+  time_now = time (0);
+#if defined HAVE_PROC_UPTIME
+  if (uptime == 0)
+#endif
+    {
+      if (boot_time == 0)
+       error (1, errno, _("couldn't get boot time"));
+      uptime = time_now - boot_time;
+    }
+  updays = uptime / 86400;
+  uphours = (uptime - (updays * 86400)) / 3600;
+  upmins = (uptime - (updays * 86400) - (uphours * 3600)) / 60;
+  tmn = localtime (&time_now);
+  printf (_(" %2d:%02d%s  up "), ((tmn->tm_hour % 12) == 0
+                              ? 12 : tmn->tm_hour % 12),
+         tmn->tm_min, (tmn->tm_hour < 12 ? _("am") : _("pm")));
+  if (updays > 0)
+    printf ("%d %s,", updays, (updays == 1 ? _("day") : _("days")));
+  printf (" %2d:%02d,  %d %s", uphours, upmins, entries,
+         (entries == 1) ? _("user") : _("users"));
+
+#if defined (HAVE_GETLOADAVG) || defined (C_GETLOADAVG)
+  loads = getloadavg (avg, 3);
+#else
+  loads = -1;
+#endif
+
+  if (loads == -1)
+    putchar ('\n');
+  else
+    {
+      if (loads > 0)
+       printf (_(",  load average: %.2f"), avg[0]);
+      if (loads > 1)
+       printf (", %.2f", avg[1]);
+      if (loads > 2)
+       printf (", %.2f", avg[2]);
+      if (loads > 0)
+       putchar ('\n');
+    }
+}
+
+/* Display the system uptime and the number of users on the system,
+   according to utmp file FILENAME. */
+
+static void
+uptime (const char *filename)
+{
+  int users = read_utmp (filename);
+  print_uptime (users);
+}
+
+static void
+usage (int status)
+{
+  if (status != 0)
+    fprintf (stderr, _("Try `%s --help' for more information.\n"),
+            program_name);
+  else
+    {
+      printf (_("Usage: %s [OPTION]... [ FILE ]\n"), program_name);
+      printf (_("\
+Output who is currently logged in according to FILE.\n\
+If FILE is not specified, use %s.  %s as FILE is common.\n\
+\n\
+      --help        display this help and exit\n\
+      --version     output version information and exit\n"),
+             UTMP_FILE, WTMP_FILE);
+      puts (_("\nReport bugs to <sh-utils-bugs@gnu.ai.mit.edu>."));
+    }
+  exit (status);
+}
+
+int
+main (int argc, char **argv)
+{
+  int optc, longind;
+  program_name = argv[0];
+  setlocale (LC_ALL, "");
+  bindtextdomain (PACKAGE, LOCALEDIR);
+  textdomain (PACKAGE);
+
+  while ((optc = getopt_long (argc, argv, "", longopts, &longind)) != -1)
+    {
+      switch (optc)
+       {
+       case 0:
+         break;
+
+       default:
+         usage (1);
+       }
+    }
+
+  if (show_version)
+    {
+      printf ("uptime (%s) %s\n", GNU_PACKAGE, VERSION);
+      exit (0);
+    }
+
+  if (show_help)
+    usage (0);
+
+  switch (argc - optind)
+    {
+    case 0:                    /* uptime */
+      uptime (UTMP_FILE);
+      break;
+
+    case 1:                    /* uptime <utmp file> */
+      uptime (argv[optind]);
+      break;
+
+    default:                   /* lose */
+      error (0, 0, _("too many arguments"));
+      usage (1);
+    }
+
+  exit (0);
+}