Display uptime in upper right corner.

Submitted by:	Andy Farkas <andyf@speednet.com.au>
Obtained from:	freebsd-current list

1 files changed, 43 insertions, 0 deletions

diff --git a/contrib/top/display.c b/contrib/top/display.c
index 6b3a5f4..bb3be21 100644
--- a/contrib/top/display.c
+++ b/contrib/top/display.c
@@ -29,6 +29,9 @@
 #include "os.h"
 #include <ctype.h>
 #include <time.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
 
 #include "screen.h"		/* interface to screen package */
 #include "layout.h"		/* defines for screen position layout */
@@ -240,11 +243,51 @@ double *avenrun;
     }
 }
 
+struct timeval boottime;
+time_t now;
+time_t uptime;
+
 i_timeofday(tod)
 
 time_t *tod;
 
 {
+       int days, hrs, i, mins, secs;
+       int mib[2];
+       size_t size;
+
+       (void)time(&now);
+
+        /*
+         * Print how long system has been up.
+         * (Found by looking getting "boottime" from the kernel)
+         */      
+        mib[0] = CTL_KERN;
+        mib[1] = KERN_BOOTTIME;
+        size = sizeof(boottime);
+        if (sysctl(mib, 2, &boottime, &size, NULL, 0) != -1 &&
+            boottime.tv_sec != 0) {
+                uptime = now - boottime.tv_sec;
+                uptime += 30;
+                days = uptime / 86400;
+                uptime %= 86400;
+                hrs = uptime / 3600;
+                uptime %= 3600;
+                mins = uptime / 60;
+                secs = uptime % 60;
+
+               if (smart_terminal)
+               {
+                   Move_to((screen_width - 24) - (days > 9 ? 1 : 0), 0);
+               }
+               else
+               {
+                   fputs(" ", stdout);
+               }
+
+               printf(" up %d+%02d:%02d:%02d", days, hrs, mins, secs);
+        }
+
     /*
      *  Display the current time.
      *  "ctime" always returns a string that looks like this: