Description of problem:

MRTG fails to run from cron, and mails errors to root.

Version-Release number of selected component (if applicable):

policy-1.9-5
mrtg-2.10.5-2.1

How reproducible:

100%

Steps to Reproduce:
1. Wait 5 minutes for mrtg cronjob to run
2. Check root mail
3.
  
Actual results:

From root@foo  Sun Mar 21 23:25:02 2004
Date: Sun, 21 Mar 2004 23:25:00 -0500
From: root@foo (Cron Daemon)
To: root@foo
Subject: Cron <root@foo> /usr/bin/mrtg /etc/mrtg/mrtg.cfg
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/root>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=root>

Use of uninitialized value in string at /usr/bin/mrtg line 72.
Empty compile time value given to use lib at /usr/bin/mrtg line 72
Use of uninitialized value in concatenation (.) or string at
/usr/bin/mrtg line 73.
Can't locate MRTG_lib.pm in @INC (@INC contains: /../lib/mrtg2 
/usr/lib/perl5/5.8.3/i386-linux-thread-multi /usr/lib/perl5/5.8.3
/usr/lib/perl5/site_perl/5.8.3/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.2/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.1/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.3 /usr/lib/perl5/site_perl/5.8.2
/usr/lib/perl5/site_perl/5.8.1 /usr/lib/perl5/site_perl/5.8.0
/usr/lib/perl5/site_perl
/usr/lib/perl5/vendor_perl/5.8.3/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.2/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.1/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.0/i386-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.3 /usr/lib/perl5/vendor_perl/5.8.2
/usr/lib/perl5/vendor_perl/5.8.1 /usr/lib/perl5/vendor_perl/5.8.0
/usr/lib/perl5/vendor_perl .) at /usr/bin/mrtg line 78.
BEGIN failed--compilation aborted at /usr/bin/mrtg line 78.


Expected results:

Additional info:

It appears that some magic is used to find the MRTG_lib.pm:

use FindBin;
use lib "${FindBin::Bin}";
use lib "${FindBin::Bin}${main::SL}..${main::SL}lib${main::SL}mrtg2";

which appears to expand to:

/../lib/mrtg2

when run from cron.  Running from root:sysadmin_r:sysadm_t works, of
course.  Does /usr/lib/mrtg2 need to be relabelled?

[root@foo root]# ls --lcontext -d /usr/lib/mrtg2
drwxr-xr-x  3 system_u:object_r:lib_t          root root 4096 Mar 21
22:18 /usr/lib/mrtg2

[root@foo root]# ls --lcontext /usr/lib/mrtg2
total 424
-rw-r--r--  1 system_u:object_r:lib_t          root root  26178 Mar 12
14:26 BER.pm
-rw-r--r--  1 system_u:object_r:lib_t          root root 218921 Mar 12
14:26 locales_mrtg.pm
-rw-r--r--  1 system_u:object_r:lib_t          root root  69261 Mar 12
14:26 MRTG_lib.pm
drwxr-xr-x  2 system_u:object_r:lib_t          root root   4096 Mar 21
22:18 Pod
-rw-r--r--  1 system_u:object_r:lib_t          root root  33720 Mar 12
14:26 SNMP_Session.pm
-rw-r--r--  1 system_u:object_r:lib_t          root root  38889 Mar 12
14:26 SNMP_util.pm