From: guido@trentalancia.net (Guido Trentalancia)
Date: Wed, 24 Aug 2016 23:55:33 +0200
Subject: [refpolicy] [PATCH v4] Update for the gnome policy and file
	contexts
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	<d4e37b0e-79de-eee1-fa40-7888b5802591@ieee.org>
Message-ID: <1472075733.19800.4.camel@trentalancia.net>
To: refpolicy@oss.tresys.com
List-Id: refpolicy.oss.tresys.com

Hello Christopher.

I have more detailed information about this problem...

On Tue, 23/08/2016 at 19.02 -0400, Chris PeBenito wrote:
> On 08/23/16 08:44, Guido Trentalancia wrote:
> > 
> > Hello Christopher !
> > 
> > Thanks for providing your valuable feedback.
> > 
> > On Mon, 22/08/2016 at 21.15 -0400, Chris PeBenito wrote:
> > > 
> > > On 08/22/16 15:39, Guido Trentalancia wrote:
> > > > 
> > > > 
> > > > +		type dconf_t, dconf_exec_t, dconf_home_t;
> > > > +		type at_spi_t, at_spi_exec_t;
> > > > ?		type gconfd_t, gconfd_exec_t, gconf_tmp_t;
> > > > ?		type gconf_home_t;
> > > > +		type gnome_settings_t, gnome_settings_exec_t;
> > > > +		type gnome_settings_daemon_t,
> > > > gnome_settings_daemon_exec_t;
> > > > +		type gnome_settings_schemas_t;
> > > > +		type gkeyringd_exec_t, gnome_keyring_home_t,
> > > > gnome_keyring_cache_home_t, gnome_keyring_tmp_t;
> > > > +		type mime_info_t;
> > > > +		type user_dbusd_t;
> > > 
> > > This dbus type cannot be referenced directly in this module.
> > 
> > If $1_dbusd_t is used to get the role/type prefix from the caller,
> > then
> > it doesn't compile for some reason which is not yet clear to me.
> > 
> > Any idea ?
> 
> The $1_dbusd_t rules need to be contained in the dbus module, not
> the?
> gnome module.??Beyond that, it's tough to say what the problem is,?
> without knowing the error messages.

Suppose to have the following additional dbus interface:

#######################################
## <summary>
##      Make a domain transition from a
##      given source domain to the
##      DBUS session bus domain using
##      the DBUS executable file type.
## </summary>
## <param name="role_prefix">
##      <summary>
##      The prefix of the user role (e.g., user
##      is the prefix for user_r).
##      </summary>
## </param>
## <param name="domain">
##      <summary>
##      Domain allowed access.
##      </summary>
## </param>
#
interface(`dbus_domain_transition_session_bus',`
        gen_require(`
                type dbusd_exec_t;
                type $1_dbusd_t;
        ')

        allow $2 dbusd_exec_t:file exec_file_perms;
        domtrans_pattern($2, dbusd_exec_t, $1_dbusd_t)
')

and suppose that it is called by the following statement:

dbus_domain_transition_session_bus($1, at_spi_t)

where $1 = "user".

During policy load, the following error is generated:

Conflicting type rules
Binary policy creation failed at line 29393 of /var/lib/selinux/refpolicy-06082016/tmp/modules/400/sysadm/cil
Failed to generate binary
/usr/sbin/semodule:  Failed!
make: *** [Rules.modular:58: load] Error 1

The temporary file is deleted automatically and cannot be inspected.

I hope it is clear now...

Do you have an idea ? It's the only thing missing before all the dbus
rules are moved from the gnome to the dbus module and I can create a
new version of this important patch.

Regards,

Guido