diskimage-builder/diskimage_builder/elements/dracut-ramdisk/post-install.d/01-ensure-drivers

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#!/bin/bash
set -eu
set -o pipefail
if [ ${DIB_DEBUG_TRACE:-1} -gt 0 ]; then
set -x
fi
TARGET_DIR="/tmp/in_target.d/"
EXTRA_DRIVERS=
for _FILE in $(ls ${TARGET_DIR}/dracut-drivers.d/) ; do
_FILE="${TARGET_DIR}/dracut-drivers.d/${_FILE}"
if [ -s $_FILE ]; then
for _LINE in $(cat $_FILE) ; do
EXTRA_DRIVERS="${EXTRA_DRIVERS} $_LINE"
done
fi
done
if [ "$EXTRA_DRIVERS" = "" ]; then
echo "No extra drivers found"
else
DRIVERS_OUTPUT="/etc/dib_dracut_drivers"
echo "Creating extra drivers record at: ${DRIVERS_OUTPUT}"
echo "$EXTRA_DRIVERS" >${DRIVERS_OUTPUT}
fi