openwrt/package/base-files/files/etc/hotplug2-common.rules

# uncomment me to log hotplug events
# DEVPATH is set {
# 	exec logger -s -t hotplug -p daemon.info "name=%DEVICENAME%, path=%DEVPATH%"
# }

DEVICENAME ~~ (^null$|^full$|^ptmx$|^tty|^zero$|^gpio|^hvc) {
	makedev /dev/%DEVICENAME% 0666
	next-event
}

DEVICENAME ~~ (^tun|^tap[0-9]$) {
	makedev /dev/net/%DEVICENAME% 0644
}

DEVICENAME ~~ ^ppp {
	makedev /dev/%DEVICENAME% 0600
}

DEVICENAME ~~ (^controlC[0-9]$|^pcmC[0-9]D[0-9]|^timer$) {
	makedev /dev/snd/%DEVICENAME% 0644
	next-event
}

DEVICENAME ~~ ^lp[0-9]$ {
	makedev /dev/%DEVICENAME% 0644
	next-event
}

DEVPATH is set, SUBSYSTEM == input {
	makedev /dev/input/%DEVICENAME% 0644
}

DEVICENAME == device-mapper {
	makedev /dev/mapper/control 0600
}

DEVPATH is set {
	makedev /dev/%DEVICENAME% 0644
}

FIRMWARE is set, ACTION == add {
	exec /sbin/hotplug-call firmware
	load-firmware /lib/firmware
	next-event
}