package/refpolicy: fix build with minidlna

Fix build failure with minidlna raised since commit
e3c31814adaa3e773c310cd97e28ffea9b980a10

Fixes:
 - http://autobuild.buildroot.org/results/52490172afd9b72b08a7deb0bd3c2124398bbffa

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/refpolicy/0001-policy-modules-services-minidlna.te-make-xdg-optiona.patch

@@ -0,0 +1,52 @@
+From 65c87bdfb1c895934582988f03f1c9c452c1426b Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Sun, 25 Jul 2021 17:59:15 +0200
+Subject: [PATCH] policy/modules/services/minidlna.te: make xdg optional
+
+Make xdg optional to avoid the following build failure:
+
+ Compiling targeted policy.28
+ env LD_LIBRARY_PATH="/home/buildroot/autobuild/instance-1/output-1/host/lib:/home/buildroot/autobuild/instance-1/output-1/host/usr/lib" /home/buildroot/autobuild/instance-1/output-1/host/usr/bin/checkpolicy -c 28 -U deny -S -O -E policy.conf -o policy.28
+ policy/modules/services/minidlna.te:85:ERROR 'unknown type xdg_music_t' at token ';' on line 146109:
+ #line 85
+	allow minidlna_t xdg_music_t:dir { getattr search open };
+ checkpolicy:  error(s) encountered while parsing configuration
+ Rules.monolithic:78: recipe for target 'policy.28' failed
+
+Fixes:
+ - http://autobuild.buildroot.org/results/52490172afd9b72b08a7deb0bd3c2124398bbffa/build-end.log
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Upstream status: https://github.com/SELinuxProject/refpolicy/pull/396]
+---
+ policy/modules/services/minidlna.te | 10 ++++++----
+ 1 file changed, 6 insertions(+), 4 deletions(-)
+
+diff --git a/policy/modules/services/minidlna.te b/policy/modules/services/minidlna.te
+index b980d2707..4d87e8ee7 100644
+--- a/policy/modules/services/minidlna.te
++++ b/policy/modules/services/minidlna.te
+@@ -82,10 +82,6 @@ logging_search_logs(minidlna_t)
+ miscfiles_read_localization(minidlna_t)
+ miscfiles_read_public_files(minidlna_t)
+ 
+-xdg_read_music(minidlna_t)
+-xdg_read_pictures(minidlna_t)
+-xdg_read_videos(minidlna_t)
+-
+ tunable_policy(`minidlna_read_generic_user_content',`
+ 	userdom_list_user_tmp(minidlna_t)
+ 	userdom_read_user_home_content_files(minidlna_t)
+@@ -101,3 +97,9 @@ tunable_policy(`minidlna_read_generic_user_content',`
+ 	userdom_dontaudit_read_user_home_content_files(minidlna_t)
+ 	userdom_dontaudit_read_user_tmp_files(minidlna_t)
+ ')
++
++optional_policy(`
++	xdg_read_music(minidlna_t)
++	xdg_read_pictures(minidlna_t)
++	xdg_read_videos(minidlna_t)
++')
+-- 
+2.30.2
+