This file is indexed.

/lib/udev/rules.d/70-uaccess.rules is in systemd-services 204-5ubuntu20.

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

The actual contents of the file can be viewed below.

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#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.

ACTION=="remove", GOTO="uaccess_end"
ENV{MAJOR}=="", GOTO="uaccess_end"

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

# Digicams with proprietary protocol
ENV{ID_GPHOTO2}=="*?", TAG+="uaccess"

# SCSI and USB scanners
ENV{libsane_matched}=="yes", TAG+="uaccess"

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

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

# Sound devices
SUBSYSTEM=="sound", TAG+="uaccess"

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

# Webcams, frame grabber, TV cards
SUBSYSTEM=="video4linux", TAG+="uaccess"
SUBSYSTEM=="dvb", TAG+="uaccess"

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

# DRI video devices
SUBSYSTEM=="drm", KERNEL=="card*", TAG+="uaccess"

# KVM
SUBSYSTEM=="misc", KERNEL=="kvm", TAG+="uaccess"

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

# (USB) authentication devices
ENV{ID_SECURITY_TOKEN}=="*?", TAG+="uaccess"

# PDA devices
ENV{ID_PDA}=="*?", TAG+="uaccess"

# Programmable remote control
ENV{ID_REMOTE_CONTROL}=="1", TAG+="uaccess"

# joysticks
SUBSYSTEM=="input", ENV{ID_INPUT_JOYSTICK}=="?*", TAG+="uaccess"

# color measurement devices
ENV{COLOR_MEASUREMENT_DEVICE}=="*?", TAG+="uaccess"

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

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

LABEL="uaccess_end"