ippusb_bridge/udev/99-ippusb.rules

# Copyright 2021 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# For an ipp-over-usb device, set the group permissions so that it can
# be accessed by libusb without having to run as. Then start the ipp-usb
# bridge.
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", \
  ACTION=="add", \
  ENV{ID_USB_INTERFACES}=="*:070104:*", OWNER="root", GROUP="ippusb", \
  MODE="0660", RUN+="/usr/libexec/ippusb/bridge_start", TAG+="ippusb"

# For other events, ensure the permissions don't get reset to usb or usbprinter
# by earlier rules.  The RUN key is left off so we don't start additional
# copies of ippusb_bridge.
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", \
  ACTION!="remove", \
  ENV{ID_USB_INTERFACES}=="*:070104:*", OWNER="root", GROUP="ippusb", \
  MODE="0660"

# ippusb_bridge will shut itself down when the USB device is removed, but we
# also want to tell upstart to stop tracking the job.  Otherwise it will try to
# respawn ippusb_bridge several times before giving up.
SUBSYSTEM=="usb", TAG=="ippusb", ACTION=="remove", \
  RUN+="/usr/libexec/ippusb/bridge_stop"