3 # Purpose: create a multiboot grml ISO using grml2usb
4 # Authors: Michael Prokop <mika@grml.org>,
5 # Thorsten Glaser <tg@mirbsd.org>
6 # Bug-Reports: see http://grml.org/bugs/
7 # License: This file is licensed under the GPL v2 or any later version.
8 ################################################################################
10 # define function getfilesize before "set -e" {{{
11 if stat --help >/dev/null 2>&1; then
12 getfilesize='stat -c %s' # GNU stat
14 getfilesize='stat -f %z' # BSD stat
18 # adjust variables if necessary through environment {{{
19 # path to the grml2usb script you'd like to use
20 [ -n "$GRML2USB" ] || GRML2USB='grml2usb'
21 # work directory for creating the filesystem
22 [ -n "$TMPDIR" ] && WRKDIR="${TMPDIR}/grml2iso.tmp"
23 [ -n "$WRKDIR" ] || WRKDIR='/tmp/grml2iso.tmp'
24 # support mkisofs as well as genisoimage
25 if which xorriso >/dev/null 2>&1 ; then
26 MKISOFS='xorriso -as mkisofs'
27 elif which mkisofs >/dev/null 2>&1; then
29 elif which genisoimage >/dev/null 2>&1; then
32 echo >&2 "Error: neither mkisofs nor genisoimage available - can not create ISO."
36 if ! which isohybrid >/dev/null 2>&1 ; then
37 echo "Error: isohybrid executable not found (install syslinux?)." >&2
46 echo >&2 "Usage: $0 [OPTIONS] -o target.iso source1.iso [source2.iso ...]"
49 -b Boot Params Additional boot parameters passed to grml2usb
50 -c Directory Copy files from directory to generated ISO
51 -f Force overwrite of existing target.iso
52 -r BootParam Remove specified boot params.
53 Can be specified multiple times.
54 -p <grml2usb param> Add the specified parameter to the grml2usb
55 commandline. For a list of valid parameters have
56 a look at the grml2usb manpage.
57 Can be specified multiple times.
58 -s URI Generate a small ISO file which downloads the squashfs
59 file from the specified URI. Please note that due to
60 restrictions in the bootprocess only IPs are allowed.
61 Supported protocols are: http and ftp
62 -t Directory Directory that should be used for temporary files
63 during build. Defaults to /tmp/grml2iso.tmp if unset.
66 $0 -s http://192.168.23.42:8000/grml/ -o small.iso grml64_2010.12.iso
68 Will generate a file small.iso which tries to download the squashfs file from
69 http://192.168.23.42:8000/grml/ - the squashfs file is placed in the same
70 output directory as the ISO file.
72 [ -n "$1" ] && exit $1 || exit 1
76 # command line handling {{{
77 [[ $# -gt 2 ]] || usage 1
84 typeset -a GRML2USB_OPTS
85 while getopts fb:c:o:r:p:s:t: name; do
87 o) ISOFILE="$OPTARG";;
88 b) GRML2USB_OPTS+=(--bootoptions="$OPTARG");;
89 c) DIR="$(readlink -f "$OPTARG")";;
91 r) GRML2USB_OPTS+=(--remove-bootoption="$OPTARG");;
92 p) GRML2USB_OPTS+=("$OPTARG");;
99 # test for specified URI
100 if [ -n "$URI" ] ; then
101 GRML2USB_OPTS+=(--bootoptions="fetch=$URI")
104 if [ -n "$WRKDIR" ] ; then
105 GRML2USB_OPTS+=(--tmpdir="$WRKDIR")
108 # make sure -o is specified
109 [ -n "$ISOFILE" ] || usage 1
111 # we don't to override any files by accident
112 if [ -e "$ISOFILE" -a ! -n "$FORCE" ]; then
113 echo "Error: target file $ISOFILE exists already." >&2
117 if [ ! -z "$DIR" -a ! -d "$DIR" ] ; then
118 echo "Error: specified parameter for -c is not a directory" >&2
123 # we need root permissions for executing grml2usb {{{
124 if [[ $(id -u) != 0 ]]; then
125 echo >&2 "Error: please run $0 as root."
130 # check for grml2usb {{{
131 if [ ! -x "$(which $GRML2USB)" ] && [ ! -x "$GRML2USB" ] ; then
132 echo >&2 "Error: Could not find grml2usb"
133 if [ -x "./$GRML2USB" ] ; then
134 echo >&2 "If you executed grml2iso from the grml2usb repository use"
135 echo >&2 "GRML2USB=./grml2usb $0 $*"
147 *) ISOFILE=$ORIG_DIR/$ISOFILE ;;
151 # create necessary stuff under WRKDIR {{{
152 [ -d "$WRKDIR" ] && WRKDIR_EXISTED='true' || WRKDIR_EXISTED='false'
153 rm -rf "$WRKDIR/cddir" "$WRKDIR/grub_tmp"
154 mkdir -p "$WRKDIR/cddir"
157 # execute grml2usb with all ISOs you'd like to install {{{
158 # remove all parameters
159 shift $(($OPTIND - 1))
161 $GRML2USB "${GRML2USB_OPTS[@]}" "$@" "$WRKDIR/cddir"
164 # move syslinux to isolinux {{{
165 mv "$WRKDIR"/cddir/boot/syslinux "$WRKDIR"/cddir/boot/isolinux
166 echo "menu label ^Isolinux prompt" > "$WRKDIR"/cddir/boot/isolinux/promptname.cfg
167 echo "include hd.cfg" >> "$WRKDIR"/cddir/boot/isolinux/grmlmain.cfg
170 # change to $WRKDIR {{{
171 # make sure $WRKDIR is an absolute path, otherwise accessing files
172 # in it will fail later in the code path if user provided a
174 WRKDIR=$(realpath $WRKDIR)
179 # default, independent of UEFI support
180 BOOT_ARGS="-no-emul-boot -boot-load-size 4 -boot-info-table -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat"
184 echo "Using xorriso for ISO generation."
185 if ! dpkg --compare-versions $(dpkg-query -W -f='${Version}\n' xorriso 2>/dev/null) gt-nl 1.1.6-1 ; then
186 echo "Disabling (U)EFI boot support since xorriso version is not recent enough."
188 echo "xorriso with -eltorito-alt-boot support present"
190 if ! [ -r "${WRKDIR}/cddir/boot/efi.img" ] ; then
191 echo "File /boot/efi.img not found, not extending boot arguments for (U)EFI boot."
193 echo "/boot/efi.img found, extending boot arguments for (U)EFI boot."
194 BOOT_ARGS="$BOOT_ARGS -boot-info-table -eltorito-alt-boot -e boot/efi.img -no-emul-boot"
201 # adjust ISO for small output if necessary {{{
202 if [ -n "$URI" ] ; then
203 bootloader_files=$(find . -name "*.cfg" -type f)
204 bootloader_files+=" "
205 bootloader_files+=$(find . -name "*.lst" -type f)
206 output_dir=$(dirname "$ISOFILE")
207 for squashfs in $(find . -name *.squashfs) ; do
208 media_path="$(dirname "$squashfs")"
209 filename="$(basename "$squashfs")"
210 target="$output_dir/$filename"
211 if [ -f "$target" ] && [ ! -n "$FORCE" ] ; then
212 echo >&2 "Warning: $target already exists, and -force not specified, not overwriting"
215 OUTPUT_FILES+=("$target")
217 sed -i -e "s#^\(^.*$media_path.*\)\($URI\)\(.*$\)#\1$URI/$filename\3#g" $bootloader_files
223 # copy specified directory to cd {{{
224 if [ -n "$DIR" ] ; then
225 echo >&2 "Copying ${DIR} to generated ISO"
226 for param in GRML_NAME VERSION RELEASENAME DATE SHORT_NAME \
227 VERSION BOOTID RELEASE_INFO ; do
228 EXCLUDE_PARAM="$EXCLUDE_PARAM --exclude **%${param}%**"
230 rsync -a ${DIR}/ $EXCLUDE_PARAM .
233 # adjust files from overlay directory
234 for GRML_VERSION_FILE in $(find . -name grml-version) ; do
235 GRML_NAME=$(awk '{print $1}' "$GRML_VERSION_FILE")
236 VERSION=$(awk '{print $2}' "$GRML_VERSION_FILE")
237 RELEASENAME=$(sed 's/.*- \(.*\).*\[.*/\1/' "$GRML_VERSION_FILE")
238 DATE=$(sed 's/.*\[\(.*\)].*/\1/' "$GRML_VERSION_FILE")
239 SHORT_NAME="$(echo $GRML_NAME | tr -d ',./;\- ')"
240 RELEASE_INFO="$GRML_NAME $VERSION - $RELEASENAME"
241 BOOTID=$(cat conf/bootid.txt)
243 for param in GRML_NAME VERSION RELEASENAME DATE SHORT_NAME \
244 RELEASE_INFO BOOTID ; do
245 value="$(eval echo '$'"$param")"
247 # copy parameterized files from the overlay directory
248 for file in $(find ${DIR} -name "*%$param%*") ; do
250 target_dir="$(dirname ${file})"
251 mkdir -p "$target_dir" || true
252 cp -r ${DIR}/${file} ./${target_dir}/"$(basename ${file/\%${param}\%/$value})"
255 # adjust config files
256 for file in ./boot/isolinux/*.cfg ./boot/isolinux/*.msg \
257 ./boot/grub/*.cfg ; do
258 sed -i "s/%$param%/$value/g" ${file} 2>/dev/null || true
264 # generate the CD/DVD ISO {{{
265 $MKISOFS -V 'grml-multiboot' -l -r -J -no-pad $BOOT_ARGS \
269 # pad the output ISO to multiples of 256 KiB for partition table support {{{
270 siz=$($getfilesize "$ISOFILE")
271 cyls=$(($siz / 512 / 32 / 16 + 1)) # C=$cyls H=16 S=32
272 ofs=$(($cyls * 16 * 32 * 512 - 1)) # padding offset (size - 1)
273 dd if=/dev/zero bs=1 count=1 seek=$ofs of="$ISOFILE" 2>/dev/null
276 # make ISO dd-able {{{
277 if isohybrid --help | grep -q -- --uefi ; then
278 echo "isohybrid version supports --uefi option, enabling"
279 ISOHYBRID_OPTIONS=--uefi
281 echo "isohybrid version does NOT support --uefi option, disabling"
284 echo "Creating dd-able ISO using isohybrid"
285 isohybrid $ISOHYBRID_OPTIONS "$ISOFILE"
291 rm -rf "$WRKDIR/cddir" "$WRKDIR/grub_tmp"
292 [[ $WRKDIR_EXISTED = 'false' ]] && rmdir "$WRKDIR"
293 echo "Generated $ISOFILE"
294 if [ -n "$URI" ] ; then
298 You requested to generate a small ISO image. Your generated
299 ISO image $ISOFILE does _not_ contain the squashfs files from
300 the source ISO images.
302 You have to provide the extracted squashfs files under $URI.
305 Squashfs files: ${OUTPUT_FILES[@]}
311 ## EOF #########################################################################
312 # vim:foldmethod=marker ts=2 ft=sh ai expandtab tw=80 sw=3