ippusb_bridge/init/bridge_stop

#!/bin/sh
# 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.

: "${PRODUCT:=}"
: "${BUSNUM:=}"
: "${DEVNUM:=}"
: "${DEVNAME:=}"

if [ -z "${ID_VENDOR_ID}" ]; then
  # Leading zeroes are omitted in $PRODUCT, so we need to put them back
  # to match the 4-digit versions that were used when the device was plugged in.
  ID_VENDOR_ID=$(printf "%04x" 0x"$(expr "${PRODUCT}" : '^\([^/]*\)')")
  ID_MODEL_ID=$(printf "%04x" 0x"$(expr "${PRODUCT}" : '^[^/]*/\([^/]*\)')")
fi

logger -t bridge_stop \
  "Stopping ippusb_bridge for ${ID_VENDOR_ID}:${ID_MODEL_ID}" \
  "on ${BUSNUM}:${DEVNUM} (${DEVNAME})"
exec /sbin/stop --no-wait --quiet ippusb-bridge \
  BUS="${BUSNUM}" DEV="${DEVNUM}" VID="${ID_VENDOR_ID}" PID="${ID_MODEL_ID}"