nexus 7, android 4.3, kernel 3.1.10

>adb shell service list |grep dbus

>adb shell service list |grep blue
39      bluetooth_manager: [android.bluetooth.IBluetoothManager]

>adb shell ls -la /dev/u*
crw-rw---- system   net_bt_stack  10,  39 2013-08-27 23:46 uhid
crw-rw---- system   net_bt_stack  10, 223 2013-08-27 23:46 uinput
crw-rw-rw- root     root       1,   9 2013-08-27 23:46 urandom
crw-rw---- root     usb       10,  50 2013-08-27 23:46 usb_accessory

>adb shell ls -la /dev/rf*
crw------- root     root      10,  61 2013-08-27 23:46 rfkill

>adb shell ls -la /system/etc/blue*
-rw-r--r-- root     root         1541 2012-11-20 04:55 auto_pair_devlist.conf
-rw-r--r-- root     root         2821 2012-11-20 04:55 bt_did.conf
-rw-r--r-- root     root          947 2013-07-31 07:56 bt_stack.conf
-rw-r--r-- root     root         3085 2012-11-20 04:55 main.conf

>adb shell ls -la /system/etc/ |grep
blue
drwxr-xr-x root     root              2013-07-31 07:56 bluetooth