How can i change high level of a file in the target security context

[Cai Xianchao]

Hi all,

I run as root and used chcon -l to set range of a file, but it failed and
there was error message output.


I did as follows:
#uname -r
2.6.18-92.el5

#sestatus
SELinux status:                 enabled
SELinuxfs mount:                /selinux
Current mode:                   enforcing
Mode from config file:          enforcing
Policy version:                 21
Policy from config file:        targeted

#chcon -l s0:c1 test

#ls -Z
-rw-r--r--  root root root:object_r:user_home_t:s0:c1  test

#chcon -l s0:c0-s0:c0.c100 test
chcon: failed to change context of test to 
root:object_r:user_home_t:s0:c0-s0:c0.c100: Permission denied

How can i change high level of a file when SELINUX is open and the policy
is targeted?

Best regards