Add a new group for MediaDrm engine plugins

bug: 8702754
Change-Id: I3b7988b64b1dcf4685624e4c1af938e132b82696

include/private/android_filesystem_config.h

@@ -71,6 +71,7 @@
 #define AID_SDCARD_R      1028  /* external storage read access */
 #define AID_CLAT          1029  /* clat part of nat464 */
 #define AID_LOOP_RADIO    1030  /* loop radio devices */
+#define AID_MEDIA_DRM     1031  /* MediaDrm plugins */
 
 #define AID_SHELL         2000  /* adb and debug shell user */
 #define AID_CACHE         2001  /* cache access */
@@ -150,6 +151,7 @@ static const struct android_id_info android_ids[] = {
     { "misc",      AID_MISC, },
     { "nobody",    AID_NOBODY, },
     { "clat",      AID_CLAT, },
+    { "mediadrm",  AID_MEDIA_DRM, },
 };
 
 #define android_id_count \

rootdir/init.rc

@@ -243,6 +243,10 @@ on post-fs-data
     # the following directory.
     mkdir /data/drm 0770 drm drm
 
+    # create directory for MediaDrm plug-ins - give drm the read/write access to
+    # the following directory.
+    mkdir /data/mediadrm 0770 mediadrm mediadrm
+
     # symlink to bugreport storage location
     symlink /data/data/com.android.shell/files/bugreports /data/bugreports
 
@@ -483,7 +487,7 @@ service drm /system/bin/drmserver
 service media /system/bin/mediaserver
     class main
     user media
-    group audio camera inet net_bt net_bt_admin net_bw_acct drmrpc
+    group audio camera inet net_bt net_bt_admin net_bw_acct drmrpc mediadrm
     ioprio rt 4
 
 service bootanim /system/bin/bootanimation