A simple workaround might be to create a cron script which writes
uptime to a file once a minute.
If that is inadequate, it's probably worth getting into what problem
you are trying to solve.
I hope this helps,
--
Raul
On Sun, Sep 25, 2016 at 4:12 PM, Kihaguru Gathura
<kihaguru.nje...@gmail.com> wrote:
> Hi All,
>
> I have a small problem here. I am unable to display uptime online.
>
>
> THE PROBLEM:
>
> A: Section 6 below: Why is the system uptime string not displayed when the
> cgi script is run under chroot?
>
> B: Section 4 below: Why does running uptime program under chroot yield time
> that is not accurate? 6:54PM while the actual time was 9:54PM produced by
> running uptime as root immediately after.
>
>
>
> 1: OpenBSD 5.9 (GENERIC.MP) #1888: Fri Feb 26 01:20:19 MST 2016
> ****************************************************************************************
>
>
>
> 2: DIRECTORY PERMISSIONS THE DEFAULT
>
> *****************************************************************************************
> # cd /var/www
> # ls -l
> total 40
> drwxr-xr-x 2 root daemon 512 Feb 26 2016 bin
> drwx-----T 2 www daemon 512 Feb 26 2016 cache
> drwxr-xr-x 3 root daemon 512 Sep 25 21:08 cgi-bin
> drwxr-xr-x 2 root daemon 512 Aug 16 13:45 conf
> drwxr-xr-x 4 root daemon 512 Aug 31 10:48 htdocs
> -rw------- 1 www daemon 69 Aug 27 08:15 htpasswd
> drwxr-xr-x 2 root daemon 512 Sep 25 00:00 logs
> drwxr-xr-x 2 root daemon 512 Sep 24 09:44 run
> drwxr-xr-x 5 root daemon 512 Sep 21 16:38 usr
> drwxr-xr-x 3 root daemon 512 Sep 24 00:28 var
> #
> ******************************************************************************************
>
>
>
> 3: A CGI PROGRAM NAMED MYUPTIMER THAT SHOULD DISPLAY SYSTEM UPTIME.
>
> ******************************************************************************************
> # vi /var/www/cgi-bin/myuptimer.c
> #include <stdio.h>
>
> int main(void)
> {
> printf("Content-Type: text/plain;charset=us-ascii\n\n");
> fflush(stdout);
> system("/usr/bin/uptime");
> fflush(stdout);
>
> return 0;
> }
>
> ******************************************************************************************
>
>
>
> 4: INSTALLING AND TESTING UPTIME PROGRAM UNDER CHROOT
>
> ********************************************************************************************
> # cp /usr/bin/uptime /var/www/usr/bin
> # cp /usr/lib/libkvm.so.16.1 /var/www/usr/lib
> # cp /usr/lib/libc.so.84.2 /var/www/usr/lib
> # cp /usr/libexec/ld.so /var/www/usr/libexec
> # cp /var/run/utmp /var/www/var/run
> #
> # chroot -u www /var/www uptime
> 6:54PM up 1 day, 12:09, 2 users, load averages: 0.11, 0.13, 0.18
> #
> # uptime
> 9:54PM up 1 day, 12:09, 1 user, load average: 0.11, 0.12, 0.13
> *********************************************************************************************
>
>
>
> 5: RUNNING MYUPTIMER CGI PROGRAM AS ROOT YIELDS GOOD RESULT
>
> ******************************************************************************************
> # /var/www/cgi-bin/myuptimer.cgi
> Content-Type: text/plain;charset=us-ascii
>
> 9:54PM up 1 day, 12:10, 1 user, load averages: 0.10, 0.12, 0.17
> *******************************************************************************************
>
>
>
> 6: HOWEVER RUNNING MYUPTIMER CGI PROGRAM UNDER CHROOT NOT SO:
> DISPLAYS OTHER TEXT BUT THE UPTIME STRING IS NOT OUTPUT.
>
> ******************************************************************************************
> # chroot -u www /var/www /cgi-bin/myuptimer.cgi
> Content-Type: text/plain;charset=us-ascii
>
>
> *******************************************************************************************
>
>
>
>
>
> Regards,
>
> Kihaguru.
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> /var/www/cgi-bin/uptimer.c: unmodified: line 1
