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#!/bin/bash --norc
#
# Copyright 2009 Red Hat, Inc. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
dwarning() {
echo "Warning: $*" >&2
}
dinfo() {
[[ $beverbose ]] && echo "$@" >&2
}
derror() {
echo "Error: $*" >&2
}
usage() {
# 80x25 linebreak here ^
cat << EOF
Usage: $0 [OPTION]... <initramfs> <base image> [<image>...]
Creates initial ramdisk image by concatenating several images from the command
line and /boot/dracut/
-f, --force Overwrite existing initramfs file.
-i, --imagedir Directory with additional images to add
(default: /boot/dracut/)
-o, --overlaydir Overlay directory, which contains files that
will be used to create an additional image
--nooverlay Do not use the overlay directory
--noimagedir Do not use the additional image directory
-h, --help This message
--debug Output debug information of the build process
-v, --verbose Verbose output during the build process
EOF
}
imagedir=/boot/dracut/
overlay=/var/lib/dracut/overlay
while (($# > 0)); do
case $1 in
-f | --force) force=yes ;;
-i | --imagedir)
imagedir=$2
shift
;;
-o | --overlaydir)
overlay=$2
shift
;;
--nooverlay)
no_overlay=yes
shift
;;
--noimagedir)
no_imagedir=yes
shift
;;
-h | --help)
usage
exit 1
;;
--debug) export debug="yes" ;;
-v | --verbose) beverbose="yes" ;;
-*)
printf "\nUnknown option: %s\n\n" "$1" >&2
usage
exit 1
;;
*) break ;;
esac
shift
done
outfile=$1
shift
if [[ -z $outfile ]]; then
derror "No output file specified."
usage
exit 1
fi
baseimage=$1
shift
if [[ -z $baseimage ]]; then
derror "No base image specified."
usage
exit 1
fi
if [[ -f $outfile && ! $force ]]; then
derror "Will not override existing initramfs ($outfile) without --force"
exit 1
fi
if [[ ! $no_imagedir && ! -d $imagedir ]]; then
derror "Image directory $overlay is not a directory"
exit 1
fi
if [[ ! $no_overlay && ! -d $overlay ]]; then
derror "Overlay $overlay is not a directory"
exit 1
fi
if [[ ! $no_overlay ]]; then
ofile="$imagedir/90-overlay.img"
dinfo "Creating image $ofile from directory $overlay"
type pigz &> /dev/null && gzip=pigz || gzip=gzip
(
cd "$overlay" || return 1
find . | cpio --quiet -H newc -o | $gzip -9 > "$ofile"
)
fi
if [[ ! $no_imagedir ]]; then
for i in "$imagedir/"*.img; do
[[ -f $i ]] && images+=("$i")
done
fi
images+=("$@")
dinfo "Using base image $baseimage"
cat -- "$baseimage" > "$outfile"
for i in "${images[@]}"; do
dinfo "Appending $i"
cat -- "$i" >> "$outfile"
done
dinfo "Created $outfile"
exit 0
|
