Merge "Adding 'uhid' permission for access to /dev/uhid."

adb/daemon/main.cpp

@@ -107,10 +107,10 @@ static void drop_privileges(int server_port) {
     // AID_SDCARD_RW to allow writing to the SD card
     // AID_NET_BW_STATS to read out qtaguid statistics
     // AID_READPROC for reading /proc entries across UID boundaries
-    gid_t groups[] = {AID_ADB,      AID_LOG,       AID_INPUT,
-                      AID_INET,     AID_NET_BT,    AID_NET_BT_ADMIN,
-                      AID_SDCARD_R, AID_SDCARD_RW, AID_NET_BW_STATS,
-                      AID_READPROC};
+    // AID_UHID for using 'hid' command to read/write to /dev/uhid
+    gid_t groups[] = {AID_ADB,          AID_LOG,          AID_INPUT,    AID_INET,
+                      AID_NET_BT,       AID_NET_BT_ADMIN, AID_SDCARD_R, AID_SDCARD_RW,
+                      AID_NET_BW_STATS, AID_READPROC,     AID_UHID};
     minijail_set_supplementary_gids(jail.get(), arraysize(groups), groups);
 
     // Don't listen on a port (default 5037) if running in secure mode.

libcutils/include/private/android_filesystem_config.h

@@ -152,6 +152,7 @@
 #define AID_NET_BW_ACCT 3007  /* change bandwidth statistics accounting */
 #define AID_READPROC 3009     /* Allow /proc read access */
 #define AID_WAKELOCK 3010     /* Allow system wakelock read/write access */
+#define AID_UHID 3011         /* Allow read/write to /dev/uhid node */
 
 /* The range 5000-5999 is also reserved for OEM, and must never be used here. */
 #define AID_OEM_RESERVED_2_START 5000

rootdir/ueventd.rc

@@ -68,7 +68,7 @@ subsystem sound
 /dev/diag                 0660   radio      radio
 /dev/diag_arm9            0660   radio      radio
 /dev/ttyMSM0              0600   bluetooth  bluetooth
-/dev/uhid                 0660   system     bluetooth
+/dev/uhid                 0660   uhid       uhid
 /dev/uinput               0660   system     bluetooth
 /dev/alarm                0664   system     radio
 /dev/rtc0                 0640   system     system