policy rpm %post script encounters avc violations

Johnson, Richard Richard.Johnson at stratus.com
Tue Aug 26 20:02:15 UTC 2008


When installing a policy rpm, one cannot log the install activity w/o
generating avc errors.  For example:

rpm -i lsb-ft-asn-selinux > /var/log/rpm-update.log

produces the following violation:

type=SYSCALL msg=audit(1219774608.030:789): arch=c000003e syscall=59
success=yes exit=0 a0=be952e0 a1=be93390 a2=be958f0 a3=8 items=0
ppid=2848 pid=2875 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0
sgid=0 fsgid=0 tty=ttyS1 ses=2 comm="restorecon" exe="/sbin/restorecon"
subj=root:system_r:restorecon_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1219774608.030:789): avc:  denied  { write } for
pid=2875 comm="restorecon" path="/var/log/rpm-update.log" dev=md2
ino=2694055 scontext=root:system_r:restorecon_t:s0-s0:c0.c1023
tcontext=root:object_r:var_log_t:s0 tclass=file

The problems seems to stem from recording the %post script's attempts to
relabel files affected by the policy, specifically:

/sbin/restorecon -F -R -v /opt/ft/sbin/sra_alarm;
/sbin/restorecon -F -R -v /etc/opt/ft/asn;
/sbin/restorecon -F -R -v /var/opt/ft/asn;
/sbin/restorecon -F -R -v /var/opt/ft/log;

Is there any way to preserve the logging w/o disabling selinux for the
duration of the install?

FWIW, the rpm commands are executed from a bash script.




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