Re: question about semanage fcontext and awareness of file_contexts.local file

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On 08/24/2015 11:15 AM, Stephen Smalley wrote:
> On 08/17/2015 07:42 PM, Bond Masuda wrote:
>> We want to add some custom file contexts for certain directories, in
>> particular we have /audit as a separate partition and run this:
>>
>> chroot /mnt/root semanage fcontext -a -t auditd_log_t "/audit(/.*)?"
>>
>> To make sure auditd works. This is run with chroot because the system
>> we're modifying is not running and mounted at /mnt/root. This creates
>> the file_contexts.local file with this content:
>>
>> # This file is auto-generated by libsemanage
>> # Do not edit directly.
>>
>> /audit(/.*)?    system_u:object_r:auditd_log_t:s0
>>
>> Later on, when we boot that system that was in /mnt/root, the
>> file_contexts.local remains the same. However, if I run semanage to add
>> another record, for example (this time, not in chroot):
>>
>> semanage fcontext -a -t httpd_sys_content_t "/data/www(/.*)?"
>>
>> It creates the content for httpd_sys_content_t in file_contexts.local,
>> but overwrites the previous entry for auditd_log_t.
>>
>> If I add the auditd_log_t entry once again, _both_ entries are now
>> present in file_contexts.local. So, it seems that the 1st time I run
>> semanage fcontext -a _while_ the system is running, it is not aware of
>> the content that was added when I ran semanage fcontext -a when the
>> system was offline and mounted in /mnt/root.
>>
>> Does semanage maintain state somewhere other than in the
>> file_contexts.local file? How can I make sure it is aware of the content
>> in file_contexts.local that was created by semanage when it was run in
>> chroot?
> This sounds like a bug to me.  What version of libsemanage and
> policycoreutils are you using, as this may be version-specific?
>
>

The versions are:

libsemanage-2.0.43-5.1.el6.x86_64
libsemanage-python-2.0.43-5.1.el6.x86_64
policycoreutils-2.0.83-24.el6.x86_64
policycoreutils-python-2.0.83-24.el6.x86_64

Thanks,
-Bond


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