This file is indexed.

/lib/udev/rules.d/70-udev-acl.rules is in udev 175-0ubuntu9.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# do not edit this file, it will be overwritten on update

# Do not use TAG+="udev-acl" outside of this file. This variable is private to
# udev-acl of this udev release and may be replaced at any time.

ENV{MAJOR}=="", GOTO="acl_end"
ACTION=="remove", GOTO="acl_apply"

# systemd replaces udev-acl entirely, skip if active
TEST=="/sys/fs/cgroup/systemd", TAG=="uaccess", GOTO="acl_end"

# PTP/MTP protocol devices, cameras, portable media players
SUBSYSTEM=="usb", ENV{ID_USB_INTERFACES}=="*:060101:*", TAG+="udev-acl"

# digicams with proprietary protocol
ENV{ID_GPHOTO2}=="*?", TAG+="udev-acl"

# SCSI and USB scanners
ENV{libsane_matched}=="yes", TAG+="udev-acl"

# HPLIP devices (necessary for ink level check and HP tool maintenance)
ENV{ID_HPLIP}=="1", TAG+="udev-acl"

# optical drives
SUBSYSTEM=="block", ENV{ID_CDROM}=="1", TAG+="udev-acl"
SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="4|5", TAG+="udev-acl"

# sound devices
SUBSYSTEM=="sound", TAG+="udev-acl"

# ffado is an userspace driver for firewire sound cards
SUBSYSTEM=="firewire", ENV{ID_FFADO}=="1", TAG+="udev-acl"

# webcams, frame grabber, TV cards
SUBSYSTEM=="video4linux", TAG+="udev-acl"
SUBSYSTEM=="dvb", TAG+="udev-acl"

# IIDC devices: industrial cameras and some webcams
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x00010*",  TAG+="udev-acl"
SUBSYSTEM=="firewire", ATTR{units}=="*0x00b09d:0x00010*",  TAG+="udev-acl"
# AV/C devices: camcorders, set-top boxes, TV sets, audio devices, and more
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x010001*", TAG+="udev-acl"
SUBSYSTEM=="firewire", ATTR{units}=="*0x00a02d:0x014001*", TAG+="udev-acl"

# DRI video devices
SUBSYSTEM=="drm", KERNEL=="card*", TAG+="udev-acl"

# KVM
SUBSYSTEM=="misc", KERNEL=="kvm", TAG+="udev-acl"

# smart-card readers
ENV{ID_SMARTCARD_READER}=="*?", TAG+="udev-acl"

# PDA devices
ENV{ID_PDA}=="*?", TAG+="udev-acl"

# Programmable remote control
ENV{ID_REMOTE_CONTROL}=="1", TAG+="udev-acl"

# joysticks
SUBSYSTEM=="input", ENV{ID_INPUT_JOYSTICK}=="?*", TAG+="udev-acl"

# color measurement devices
ENV{COLOR_MEASUREMENT_DEVICE}=="*?", TAG+="udev-acl"

# DDC/CI device, usually high-end monitors such as the DreamColor
ENV{DDC_DEVICE}=="*?", TAG+="udev-acl"

# media player raw devices (for user-mode drivers, Android SDK, etc.)
SUBSYSTEM=="usb", ENV{ID_MEDIA_PLAYER}=="?*", TAG+="udev-acl"

# apply ACL for all locally logged in users
LABEL="acl_apply", TAG=="udev-acl", TEST=="/var/run/ConsoleKit/database", \
  RUN+="udev-acl --action=$env{ACTION} --device=$env{DEVNAME}"

LABEL="acl_end"