Re: Improper labelling on creation.

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On 05/09/2015 01:59 AM, Erinn Looney-Triggs wrote:
> I have a passenger app that is installed on the system. I have the 
> following in file_contexts.local:
> 
> /var/www/foo/releases/.*/tmp(/.*)? 
> unconfined_u:object_r:httpd_sys_rw_content_t:s0
> 
> However, on creating the tmp directory: releases $ sudo mkdir -p
> foo/tmp/ releases $ cd foo/ foo $ ls -lZ drwxr-sr-x. root
> developers unconfined_u:object_r:httpd_sys_content_t:s0 tmp
> 
> But matchpathcon returns the right label: matchpathcon tmp/ tmp
> unconfined_u:object_r:httpd_sys_rw_content_t:s0
> 
> And a restorecon sets it properly to rw.
> 
> So, umm, what is the deal here? There is something I am missing
> for sure. This is on RHEL 7.1 with the latest and greatest
> everything. Oddly I think, but am not sure, that this wasn't a
> problem with 7.0.
> 
> Thoughts? Thanks.
> 
> -Erinn -- selinux mailing list selinux@xxxxxxxxxxxxxxxxxxxxxxx 
> https://admin.fedoraproject.org/mailman/listinfo/selinux
> 

It follows default object labeling rules in SELinux. If you don't have
defined type transitions then it inherits labeling from the parent
directory.

In your case

$ matchpathcon /var/www/foo/releases
/var/www/foo/releases	system_u:object_r:httpd_sys_content_t:s0


You need to run restorecon if you create it by hand or you can defined
transitions rules for it.

Or you can create it using

mkdir -Z -p foo/tmp

- -- 
Miroslav Grepl
Software Engineering, SELinux Solutions
Red Hat, Inc.
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