Creating home directories with wrong context
Daniel J Walsh
dwalsh at redhat.com
Thu Feb 5 07:53:18 UTC 2015
On 01/29/2015 01:19 AM, Jayson Hurst wrote:
> This is what seems to trigger the home dir creation issue for me:
>
> # touch /.autorelabel
> # reboot
>
> Then ssh into the box as a new user.
>
> Declaring userdom_home_filetrans_user_home_dir(vasd_t) in the vasd.te
> file doesn't change the behavior. The user home dirs are still created
> with a security context of home_root_t.
>
> A restart of the vasd daemon fixes the issue. Any suggestions on
> how/why a restart of the daemon fixed it?
Most likey vasd was not running with the correct domain.
ps -eZ | grep vasd
to make sure it is running as vasd_t.
>
> ------------------------------------------------------------------------
> From: swazup at hotmail.com
> To: dwalsh at redhat.com; selinux at lists.fedoraproject.org
> Subject: RE: Creating home directories with wrong context
> Date: Tue, 27 Jan 2015 14:00:28 -0700
>
> So should I open a bug for this?
>
> ------------------------------------------------------------------------
> Date: Wed, 14 Jan 2015 10:49:56 -0500
> From: dwalsh at redhat.com
> To: swazup at hotmail.com; selinux at lists.fedoraproject.org
> Subject: Re: Creating home directories with wrong context
>
> Is it in an optional block? Could you send me your policy?
>
>
> On 01/12/2015 11:48 AM, Jayson Hurst wrote:
>
> I declare userdom_home_filetrans_user_home_dir($1) in vasd_admin
> method in the vasd.if file. vasd.te calls vasd_admin(vasd_t).
>
> $ sesearch -T -s vasd_t -t home_root_t -c file
>
> $
>
> The command above returns a blank line.
>
> Could I there be a conflicting rule that might be causing me
> problems. Where do I look to figure out why this no longer works?
>
> ------------------------------------------------------------------------
> Date: Sat, 10 Jan 2015 07:03:17 -0500
> From: dwalsh at redhat.com <mailto:dwalsh at redhat.com>
> To: swazup at hotmail.com <mailto:swazup at hotmail.com>;
> selinux at lists.fedoraproject.org
> <mailto:selinux at lists.fedoraproject.org>
> Subject: Re: Creating home directories with wrong context
>
>
> On 01/08/2015 09:22 PM, Jayson Hurst wrote:
>
> I am trying to figure out why a policy that was written on
> RHEL 6.0 doesn't work the same on RHEL 6.5.
>
> I have a policy whose domain is vasd_t
>
> I am using the userdomain.if interface call which is supposed
> to give the domain access to create directories in the home
> dir root with the user home directory type.
> userdom_home_filetrans_user_home_dir(vasd_t)
>
> Which calls:
> files_home_filetrans($1, user_home_dir_t, dir)
> Which calls:
> filetrans_pattern($1, home_root_t, $2, $3)
>
> Which is defined as:
> allow $1 $2:dir rw_dir_perms;
> type_transition $1 $2:$4 $3;
>
> I would expect this to allow me to create a new directory in
> /home which is of type home_root_t, but what I am seeing is
> that the new homedir is being created with the type of
> home_root_t and not user_home_dir_t as expected.
>
> I have also tried not calling the interface methods and
> defining it by hand as:
>
> allow vasd_t home_root_t:dir rw_dir_perms;
> type_transition vasd_t home_root_t:dir user_home_dir_t;
>
> I have also tried calling userdom_create_user_home_dirs(vasd_t)
>
> sesearch shows:
>
> $ sesearch -AC | grep 'allow vasd_t' | grep ': dir' | grep
> home_root_t
> allow vasd_t home_root_t : dir { ioctl read write getattr
> lock add_name remove_name search open } ;
>
> The way the daemon works that is associated to the vasd_t
> domain is that it calls a script that does the actual creation
> of the homedir. I believe the problem lies in this fact that
> perhaps the script isn't being invoked in a way to give it
> proper creation rights.
>
> Like I said this use to work in RHEL 6.0 but now I cannot seem
> to get it to work in 6.5. Any help would be appreciated. I
> don't know what I am missing here.
>
>
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>
>
> You should only need.
> userdom_home_filetrans_user_home_dir(vasd_t)
>
> You need to look at your transition rules.
>
> sesearch -T -s vasd_t -t home_root_t -c file
>
>
>
>
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>
>
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