Date: Thu, 20 Sep 2001 15:21:08 +0400 From: Vladimir B.Grebenschikov <vova@express.ru> To: FreeBSD-gnats-submit@freebsd.org Cc: freebsd-hackers@freebsd.org Subject: uptime and w utilities lie about real uptime Message-ID: <E15k1tE-0000r2-00@vbook.express.ru>
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>Submitter-Id: current-users
>Originator: Vladimir B. Grebenschikov
>Organization: TSB "Russian Express"
>Confidential: no
>Synopsis: uptime and w utilities lie about real uptime
>Severity: non-critical
>Priority: low
>Category: bin
>Class: sw-bug
>Release: FreeBSD 5.0-CURRENT i386
>Environment:
System: FreeBSD vbook.express.ru 5.0-CURRENT FreeBSD 5.0-CURRENT #0: Wed Sep 19 20:26:25 MSD 2001 root@vbook.express.ru:/usr/src.local/sys/i386/compile/VBOOK i386
>Description:
Just after very fast boot uptimealways shows more than 30 sec.
looking to src/usr/bin/w/w.c:
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;
(void)printf(" up");
why utility increases uptime on 30 seconds ??
Is any real reasons for it ?
>How-To-Repeat:
Boot and run uptime
>Fix:
--- src/usr.bin/w.c.orig Thu Sep 20 15:20:01 2001
+++ src/usr.bin/w.c Thu Sep 20 15:20:11 2001
@@ -450,7 +450,6 @@
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;
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