1firmware_directories /etc/firmware/ /odm/firmware/ /vendor/firmware/ /firmware/image/ 2uevent_socket_rcvbuf_size 16M 3 4subsystem graphics 5 devname uevent_devpath 6 dirname /dev/graphics 7 8subsystem drm 9 devname uevent_devpath 10 dirname /dev/dri 11 12subsystem input 13 devname uevent_devpath 14 dirname /dev/input 15 16subsystem sound 17 devname uevent_devpath 18 dirname /dev/snd 19 20# ueventd can only set permissions on device nodes and their associated 21# sysfs attributes, not on arbitrary paths. 22# 23# format for /dev rules: devname mode uid gid 24# format for /sys rules: nodename attr mode uid gid 25# shortcut: "mtd@NN" expands to "/dev/mtd/mtdNN" 26 27/dev/null 0666 root root 28/dev/zero 0666 root root 29/dev/full 0666 root root 30/dev/ptmx 0666 root root 31/dev/tty 0666 root root 32/dev/random 0666 root root 33/dev/urandom 0666 root root 34# Make HW RNG readable by group system to let EntropyMixer read it. 35/dev/hw_random 0440 root system 36/dev/ashmem 0666 root root 37/dev/binder 0666 root root 38/dev/hwbinder 0666 root root 39/dev/vndbinder 0666 root root 40 41/dev/pmsg0 0222 root log 42 43# kms driver for drm based gpu 44/dev/dri/* 0666 root graphics 45 46# these should not be world writable 47/dev/uhid 0660 uhid uhid 48/dev/uinput 0660 uhid uhid 49/dev/rtc0 0640 system system 50/dev/tty0 0660 root system 51/dev/graphics/* 0660 root graphics 52/dev/input/* 0660 root input 53/dev/v4l-touch* 0660 root input 54/dev/snd/* 0660 system audio 55/dev/bus/usb/* 0660 root usb 56/dev/mtp_usb 0660 root mtp 57/dev/usb_accessory 0660 root usb 58/dev/tun 0660 system vpn 59 60# CDMA radio interface MUX 61/dev/ppp 0660 radio vpn 62 63# sysfs properties 64/sys/devices/platform/trusty.* trusty_version 0440 root log 65/sys/devices/virtual/input/input* enable 0660 root input 66/sys/devices/virtual/input/input* poll_delay 0660 root input 67/sys/devices/virtual/usb_composite/* enable 0664 root system 68/sys/devices/system/cpu/cpu* cpufreq/scaling_max_freq 0664 system system 69/sys/devices/system/cpu/cpu* cpufreq/scaling_min_freq 0664 system system 70