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I appear to be misunderstanding the security levels/categories within SELinux. I have attempted to configure a file that I have read access to (via DAC), but no read access to via SELinux categories.

My user is confied to one category (C2), and the file is set to C3.

[test1@jsightler ~]$ id -Z
unconfined_u:unconfined_r:unconfined_t:s0:c2

[test1@jsightler ~]$ cd /testdir/
[test1@jsightler testdir]$ ls -Z
-rw-r--r--. root root unconfined_u:object_r:default_t:s0:c3 test


[test1@jsightler testdir]$ cat test 
adfasdfadsfas

Why does this read succeed?

EDIT:

sestatus output:

[root@jsightler ~]# sestatus
SELinux status:                 enabled
SELinuxfs mount:                /selinux
Current mode:                   enforcing
Mode from config file:          enforcing
Policy version:                 24
Policy from config file:        targeted
[root@jsightler ~]#
  • Please show the output of the sestatus command. – Kyle Jones Mar 6 '12 at 19:14
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[test1@jsightler ~]$ id -Z
unconfined_u:unconfined_r:unconfined_t:s0:c2

Not an expert, but that doesn't look like a confined user to me. Where does it indicate to you that this user is confined? Everything in that output shows unconfined.

  • I was expecting the S0:C2 to be enforced, despite the user being unconfined_u. I guess these are ignored with unconfined_u, though. – jsight Mar 7 '12 at 4:18

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