allow adbd to set sys.usb.ffs.ready

Needed for https://android-review.googlesource.com/147730

Change-Id: Iceb87f210e4c5d0f39426cc6c96a216a4644eaa9

adbd.te

@@ -41,10 +41,11 @@ allow adbd sdcard_type:file create_file_perms;
 allow adbd anr_data_file:dir r_dir_perms;
 allow adbd anr_data_file:file r_file_perms;
 
-# Set service.adb.*, sys.powerctl properties.
+# Set service.adb.*, sys.powerctl, and sys.usb.ffs.ready properties.
 unix_socket_connect(adbd, property, init)
 allow adbd shell_prop:property_service set;
 allow adbd powerctl_prop:property_service set;
+allow adbd ffs_prop:property_service set;
 
 # Run /system/bin/bu
 allow adbd system_file:file rx_file_perms;

property.te

@@ -4,6 +4,7 @@ type debug_prop, property_type;
 type debuggerd_prop, property_type;
 type dhcp_prop, property_type;
 type fingerprint_prop, property_type;
+type ffs_prop, property_type;
 type radio_prop, property_type;
 type net_radio_prop, property_type;
 type system_radio_prop, property_type;

property_contexts

@@ -20,6 +20,7 @@ runtime.                u:object_r:system_prop:s0
 hw.                     u:object_r:system_prop:s0
 sys.                    u:object_r:system_prop:s0
 sys.powerctl            u:object_r:powerctl_prop:s0
+sys.usb.ffs.            u:object_r:ffs_prop:s0
 service.                u:object_r:system_prop:s0
 wlan.                   u:object_r:system_prop:s0
 dhcp.                   u:object_r:dhcp_prop:s0