From: dac.override@gmail.com (Dominick Grift)
Date: Wed, 24 May 2017 15:59:34 +0200
Subject: [refpolicy] [PATCH v2] dbus: let session bus daemon manage user
 runtime dirs
In-Reply-To: <1495632352.13711.1.camel@trentalancia.com>
References: <1495629542.7394.3.camel@trentalancia.com>
	<20170524124454.GB1910@julius.enp8s0.d30>
	<1495632352.13711.1.camel@trentalancia.com>
Message-ID: <20170524135934.GC1910@julius.enp8s0.d30>
To: refpolicy@oss.tresys.com
List-Id: refpolicy.oss.tresys.com

On Wed, May 24, 2017 at 03:25:52PM +0200, Guido Trentalancia via refpolicy wrote:
> Let the session dbus process manage user runtime directories (with
> its own file type).
> 
> This is the second version (v2) of the patch, thanks to Dominick
> Grift for revising the first version and suggesting improvements.
> 
> Signed-off-by: Guido Trentalancia <guido@trentalancia.com>
> ---
>  policy/modules/contrib/dbus.fc |    1 +
>  policy/modules/contrib/dbus.te |    7 +++++++
>  2 files changed, 8 insertions(+)
> 
> --- a/policy/modules/contrib/dbus.fc	2017-03-29 17:58:00.272386397 +0200
> +++ b/policy/modules/contrib/dbus.fc	2017-05-24 15:12:46.704726190 +0200
> @@ -4,6 +4,7 @@ HOME_DIR/\.dbus(/.*)?				gen_context(sys
>  
>  /run/dbus(/.*)?					gen_context(system_u:object_r:system_dbusd_var_run_t,s0)
>  /run/messagebus\.pid			--	gen_context(system_u:object_r:system_dbusd_var_run_t,s0)
> +/run/user/%{USERID}/dbus-1(/.*)?		gen_context(system_u:object_r:session_dbusd_runtime_t,s0)
>  
>  /usr/bin/dbus-daemon(-1)?		--	gen_context(system_u:object_r:dbusd_exec_t,s0)
>  
> --- a/policy/modules/contrib/dbus.te	2017-04-26 17:47:20.555423022 +0200
> +++ b/policy/modules/contrib/dbus.te	2017-05-24 15:06:23.125727758 +0200
> @@ -47,6 +47,9 @@ type system_dbusd_var_run_t;
>  files_pid_file(system_dbusd_var_run_t)
>  init_daemon_pid_file(system_dbusd_var_run_t, dir, "dbus")
>  
> +type session_dbusd_runtime_t;
> +files_pid_file(session_dbusd_runtime_t)
> +
>  ifdef(`enable_mcs',`
>  	init_ranged_system_domain(system_dbusd_t, dbusd_exec_t, s0 - mcs_systemhigh)
>  ')
> @@ -204,6 +207,10 @@ manage_dirs_pattern(session_bus_type, se
>  manage_files_pattern(session_bus_type, session_dbusd_tmp_t, session_dbusd_tmp_t)
>  files_tmp_filetrans(session_bus_type, session_dbusd_tmp_t, { dir file })
>  
> +manage_dirs_pattern(session_bus_type, session_dbusd_runtime_t, session_dbusd_runtime_t)
> +manage_files_pattern(session_bus_type, session_dbusd_runtime_t, session_dbusd_runtime_t)
> +userdom_user_runtime_filetrans(session_bus_type, session_dbusd_runtime_t, { dir file })

Theres no file in /run/user/USERID if there was then you forgot to add the corresponding file context specification
there is however a sock file there: "bus"

/run/user/%{USERID/bus -s system_u:object_r:session_dbusd_user_runtime_t:s0
userdom_user_runtime_filetrans(session_bus_type, session_dbusd_user_runtime_t, sock_file)

> +
>  kernel_read_system_state(session_bus_type)
>  kernel_read_kernel_sysctls(session_bus_type)
>  
> _______________________________________________
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> refpolicy at oss.tresys.com
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Dominick Grift
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