12:42 p.m.
For reasons I don't understand, the install labelled /home with (I think, I'm
offsite with no access) auto_fs_t as it is a mount point for autofs.
Roland
--
Roland Roberts, PhD
6818 Madeline Court
Brooklyn, NY 11220
-------- Original message --------
From: Daniel J Walsh <dwalsh(a)redhat.com>
Date: 05/28/2013 8:33 AM (GMT-05:00)
To: Roland Roberts <roland(a)astrofoto.org>
Cc: Dominick Grift <dominick.grift@gmail.com>,selinux(a)lists.fedoraproject.org
Subject: Re: SELinux, NIS, NFS, and /home, trouble with Fedora 18 converting
user_home_dir_t to detault_t
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On 05/28/2013 08:03 AM, Roland Roberts wrote:
Yet normally /home is home_root_t. And in my case /data is a mount
point
for other things; the actual disk is mounted at /data/home, so I thought I
was doing the equivalent of what the man page says.
Roland -- Roland Roberts, PhD 6818 Madeline Court Brooklyn, NY 11220
-------- Original message -------- From: Dominick Grift
<dominick.grift(a)gmail.com> Date: 05/28/2013 4:13 AM (GMT-05:00) To: Roland
Roberts <roland(a)astrofoto.org> Cc: selinux(a)lists.fedoraproject.org Subject:
Re: SELinux, NIS, NFS, and /home, trouble with Fedora 18 converting
user_home_dir_t to detault_t
On Mon, 2013-05-27 at 19:01 -0400, Roland Roberts wrote:
SELinux contexts for /home are treated a bit differently than other
locations.
Try instead: (from: man semanage):
> For home directories under top level directory, for example /disk6/home,
> execute the following commands. # semanage fcontext -a -t home_root_t
> "/disk6" # semanage fcontext -a -e /home /disk6/home # restorecon -R -v
> /disk6
> I'm trying to clean up selinux contexts and having trouble. The system is
> a new install of Fedora 18, but the home directories have been preserved
> for a long time. Because the system runs boot on raid-1, it was installed
> as Fedora 17 and then I used fedup to move to Fedora 18.
>
> My home directories are automounted via NFS and an NIS map. I mount them
> on the clients with an explicit context:
>
> 270 roland> ypcat auto.home
> -rw,soft,intr,tcp,context="system_u:object_r:user_home_t:s0"
> archos.rlent.pnet:/data/home/&
>
> However, my troubles right now are confined to the server.
>
> The real home directory is /data/home so /data/home/roland is mounted on
> /home/roland. All clients see the same mount point, even the server
> remounts this way.
>
> Most of the selinux context information is wrong, probably because some
> of these files have been hanging around roughly since RedHat 3.0.3. Yes,
> really. Although the content has surely changed (e.g., .bashrc).
>
> To get started, I've done this
>
> semanage fcontext -a -t home_root_t /data/home semanage fcontext -a -t
> user_home_dir_t '/data/home/(.*)' semanage fcontext -a -t lost_found_t
> /data/home/lost+found restorecon -v -R /data/home
>
> That gave the surprising result of doing absolutely nothing. So I
> brute-forced it and did
>
> semanage fcontext -a -t home_root_t /data/home semanage fcontext -a -t
> lost_found_t /data/home/lost+found for D in $LIST; do semanage fcontext
> -a -t user_home_dir_t /data/home/$D; done restorecon -v -R /data/home
>
> The above did not work for the lost+found directory. I haven't figured
> out why. I tried deleting all the contexts I had set and starting over
> and I tried setting the context just on lost+found repeatedly to no
> avail. lost+found remains default_t.
>
> Next, I log in via ssh to my user account. Since I have X forwarding
> turned on, this results in an .Xauthority file being created. If I run
> (as root, from another window) restorecon, I get this
>
> [root@archos ~]# cd /data/home/roland [root@archos roland]# restorecon -v
> -R /data/home/roland restorecon reset /data/home/roland/.Xauthority
> context
> unconfined_u:object_r:xauth_home_t:s0->unconfined_u:object_r:default_t:s0
>
>
>
So the file was created with the correct context, but it gets zapped
> with restorecon. I can create a new file via touch and it gets
created
> with the correct context
>
> 268 roland> ls -Z foo -rw-rw-r--. roland roland
> unconfined_u:object_r:user_home_t:s0 foo 269 roland> ls -Zad .
> drwxr-xr-x. roland roland system_u:object_r:user_home_dir_t:s0 .
>
> But again, if I run restorecon, it gets converted to default_t.
>
> I realize the whole NIS/NFS thing makes this problematic on the clients,
> but all of the above is on the server. I was hoping to get the file
> contexts fixed up, but even if I can get it to stop converting everything
> back to default_t, I haven't got a clue about all the other contexts I
> need to set (e.g., ssh_home_t for .ssh, but what else) and then I fear
> they will just get reset, too.
>
> So, what's going on here and how do I stop it? Then after that, how do I
> go about fixing all the default_t under my home directory to be what they
> should be.
>
> roland
>
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In this case you want to label /data/home as equivalent to /home
and you probably want to label data with a label that most apps can read like
usr_t.
# semanage fcontext -a -t usr_t '/data(/.*)?'
# semanage fcontext -a -e /home /data/home
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