Bug 883143

Summary: git-daemon and httpd can't serve the same dir
Product: Red Hat Enterprise Linux 6 Reporter: seth vidal <svidal>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED ERRATA QA Contact: Milos Malik <mmalik>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 6.3CC: dwalsh, icon, mmalik, tcallawa
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-3.7.19-185.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-02-21 08:32:57 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 886216    

Description seth vidal 2012-12-03 21:41:46 UTC 
Description of problem:
We have a /project space on fedorapeople.org that serves out via http and has a mixture of plain files/dirs and git repos.

We'd like to serve the git repos via git-daemon from xinetd.

The issue is that for apache to access the symlinks the files must be httpd_sys_content_t but for git-daemon to access the files the files must be git_system_content_t.

With the files in the git_system_content_t apache works pretty well, except for symlinks.

After discussion with some folks at kernel.org where they are doing similar things the issue seems to be a minor change to the git policy to allow access for symlinks. read_lnk_files_pattern(.....etc)



Version-Release number of selected component (if applicable):
selinux-policy-targeted-3.7.19-155.el6_3.4.noarch

How reproducible:
set up a git repo and a dir
export the dir using git-daemon from xinetd and export the dir via apache.

set the file contexts to git_system_content_d and then create a symlink - try to access that symlink via apache (set FollowSymLinks in apache)


any help is welcome.
Comment 2 Miroslav Grepl 2012-12-04 12:31:53 UTC 
Yes, I see we have

 sesearch -A -s httpd_t -t git_system_content_t
Found 3 semantic av rules:
   allow httpd_t git_sys_content_t : file { ioctl read getattr lock open } ; 
   allow httpd_t git_sys_content_t : dir { ioctl read getattr lock search open }


We need to add

read_lnk_files_pattern($1, git_system_content_t, git_system_content_t)

to git_read_generic_system_content_files() interface.
Comment 5 errata-xmlrpc 2013-02-21 08:32:57 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-0314.html