X-Git-Url: https://git.grml.org/?p=grml2usb.git;a=blobdiff_plain;f=grml2iso;h=43f57c1b9992ee7e6c194856ebcedd0256cc616b;hp=1b2cfec9b2fb3cf3cc171d49bf97b9b9e4390ec4;hb=ccb378445baf849f9ab64b4be578b0648367ff05;hpb=b0d99d0fed33b42d8cf602b31008f0eb567f44c4 diff --git a/grml2iso b/grml2iso index 1b2cfec..43f57c1 100755 --- a/grml2iso +++ b/grml2iso @@ -1,4 +1,4 @@ -#!/bin/bash +#!/usr/bin/env bash # Filename: grml2iso # Purpose: create a multiboot grml ISO using grml2usb # Authors: Michael Prokop , @@ -6,10 +6,9 @@ # Bug-Reports: see http://grml.org/bugs/ # License: This file is licensed under the GPL v2 or any later version. ################################################################################ -# TODO: -# * support isolinux as bootloader on the ISO -# * support setting grml2usb options (e.g. --bootoptions=...) -################################################################################ + +# make sure we have the sbin directories in our PATH to find grml2usb ootb +PATH="${PATH}:/sbin:/usr/local/sbin:/usr/sbin" # define function getfilesize before "set -e" {{{ if stat --help >/dev/null 2>&1; then @@ -23,14 +22,56 @@ # path to the grml2usb script you'd like to use [ -n "$GRML2USB" ] || GRML2USB='grml2usb' # work directory for creating the filesystem + [ -n "$TMPDIR" ] && WRKDIR="${TMPDIR}/grml2iso.tmp" [ -n "$WRKDIR" ] || WRKDIR='/tmp/grml2iso.tmp' +# support mkisofs as well as genisoimage +if which xorriso >/dev/null 2>&1 ; then + MKISOFS='xorriso -as mkisofs' +elif which mkisofs >/dev/null 2>&1; then + MKISOFS='mkisofs' +elif which genisoimage >/dev/null 2>&1; then + MKISOFS='genisoimage' +else + echo "Error: neither xorriso nor mkisofs nor genisoimage available - can not create ISO." >&2 + exit 1 +fi + +if ! which isohybrid >/dev/null 2>&1 ; then + echo "Error: isohybrid executable not found (install syslinux/isolinux?)." >&2 + exit 1 +fi # }}} # helper stuff {{{ set -e usage() { - echo >&2 "Usage: $0 -o target.iso source1.iso [source2.iso ...]" + echo >&2 "Usage: $0 [OPTIONS] -o target.iso source1.iso [source2.iso ...]" + echo >&2 " +Options: + -b Boot Params Additional boot parameters passed to grml2usb + -c Directory Copy files from directory to generated ISO + -f Force overwrite of existing target.iso + -r BootParam Remove specified boot params. + Can be specified multiple times. + -p Add the specified parameter to the grml2usb + commandline. For a list of valid parameters have + a look at the grml2usb manpage. + Can be specified multiple times. + -s URI Generate a small ISO file which downloads the squashfs + file from the specified URI. Please note that due to + restrictions in the bootprocess only IPs are allowed. + Supported protocols are: http and ftp + -t Directory Directory that should be used for temporary files + during build. Defaults to /tmp/grml2iso.tmp if unset. + + Examples: + $0 -s http://192.168.23.42:8000/grml/ -o small.iso grml64_2010.12.iso + + Will generate a file small.iso which tries to download the squashfs file from + http://192.168.23.42:8000/grml/ - the squashfs file is placed in the same + output directory as the ISO file. +" [ -n "$1" ] && exit $1 || exit 1 } # }}} @@ -39,23 +80,47 @@ [[ $# -gt 2 ]] || usage 1 ISOFILE='' - while getopts ao: name; do + DIR='' + ADD_OPTS='' + FORCE='' + URI='' + typeset -a GRML2USB_OPTS + while getopts fb:c:o:r:p:s:t: name; do case $name in o) ISOFILE="$OPTARG";; + b) GRML2USB_OPTS+=(--bootoptions="$OPTARG");; + c) DIR="$(readlink -f "$OPTARG")"; [ -n "$DIR" ] || { echo "Could not read $OPTARG - exiting" >&2 ; exit 1 ; } ;; + f) FORCE='true';; + r) GRML2USB_OPTS+=(--remove-bootoption="$OPTARG");; + p) GRML2USB_OPTS+=("$OPTARG");; + s) URI="$OPTARG";; + t) WRKDIR="$(readlink -f "$OPTARG")";; ?) usage 2;; esac done + # test for specified URI + if [ -n "$URI" ] ; then + GRML2USB_OPTS+=(--bootoptions="fetch=$URI") + fi + + if [ -n "$WRKDIR" ] ; then + GRML2USB_OPTS+=(--tmpdir="$WRKDIR") + fi + # make sure -o is specified [ -n "$ISOFILE" ] || usage 1 # we don't to override any files by accident - if [ -e "$ISOFILE" ]; then + if [ -e "$ISOFILE" -a ! -n "$FORCE" ]; then echo "Error: target file $ISOFILE exists already." >&2 exit 1 fi - shift $(($OPTIND - 1)) + if [ ! -z "$DIR" -a ! -d "$DIR" ] ; then + echo "Error: specified parameter for -c is not a directory" >&2 + exit 1 + fi # }}} # we need root permissions for executing grml2usb {{{ @@ -65,10 +130,20 @@ fi # }}} +# check for grml2usb {{{ + if [ ! -x "$(which $GRML2USB)" ] && [ ! -x "$GRML2USB" ] ; then + echo "Error: Could not find grml2usb executable. Is /usr/sbin missing in PATH?" >&2 + echo "Tip: run GRML2USB=/usr/sbin/grml2usb grml2iso ... as workaround" >&2 + if [ -x "./$GRML2USB" ] ; then + echo >&2 "If you executed grml2iso from the grml2usb repository use" + echo >&2 "GRML2USB=./grml2usb $0 $*" + fi + exit 1 + fi +# }}} + # variables {{{ ORIG_DIR="$(pwd)" - # note: grub-pc_1.96+20090603-1 seems to be b0rken - GRUB_VERSION="grub-pc_1.96+20080724-16" # normalise path case $ISOFILE in @@ -84,31 +159,145 @@ # }}}} # execute grml2usb with all ISOs you'd like to install {{{ - $GRML2USB "$@" "$WRKDIR/cddir" + # remove all parameters + shift $(($OPTIND - 1)) + + $GRML2USB "${GRML2USB_OPTS[@]}" "$@" "$WRKDIR/cddir" # }}} # move syslinux to isolinux {{{ mv "$WRKDIR"/cddir/boot/syslinux "$WRKDIR"/cddir/boot/isolinux + echo "menu label ^Isolinux prompt" > "$WRKDIR"/cddir/boot/isolinux/promptname.cfg + echo "include hd.cfg" >> "$WRKDIR"/cddir/boot/isolinux/grmlmain.cfg +# }}} +# change to $WRKDIR {{{ + # make sure $WRKDIR is an absolute path, otherwise accessing files + # in it will fail later in the code path if user provided a + # relative directory + WRKDIR=$(realpath $WRKDIR) cd "$WRKDIR/cddir" - echo "menu label ^Isolinux prompt" > boot/isolinux/promptname.cfg - echo "include hd.cfg" >> boot/isolinux/grmlmain.cfg +# }}} + +# efi boot {{{ + # default, independent of UEFI support + BOOT_ARGS="-no-emul-boot -boot-load-size 4 -boot-info-table -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat" + UEFI_ENABLE=false + + case "$MKISOFS" in + xorriso*) + echo "Using xorriso for ISO generation." + if ! dpkg --compare-versions $(dpkg-query -W -f='${Version}\n' xorriso 2>/dev/null) gt-nl 1.1.6-1 ; then + echo "Disabling (U)EFI boot support since xorriso version is not recent enough." + else + echo "xorriso with -eltorito-alt-boot support present" + UEFI_ENABLE=true + + if ! [ -r "${WRKDIR}/cddir/boot/efi.img" ] ; then + echo "Warning: File /boot/efi.img not found, not extending boot arguments for (U)EFI boot." + UEFI_ENABLE=false + else + echo "/boot/efi.img found, extending boot arguments for (U)EFI boot." + BOOT_ARGS="$BOOT_ARGS -boot-info-table -eltorito-alt-boot -e boot/efi.img -no-emul-boot" + fi + fi + ;; + *) + echo "Using $MKISOFS for ISO generation (lacking UEFI option), disabling (U)EFI boot support." + ;; + esac +# }}} + +# adjust ISO for small output if necessary {{{ + if [ -n "$URI" ] ; then + bootloader_files=$(find . -name "*.cfg" -type f) + bootloader_files+=" " + bootloader_files+=$(find . -name "*.lst" -type f) + output_dir=$(dirname "$ISOFILE") + for squashfs in $(find . -name *.squashfs) ; do + media_path="$(dirname "$squashfs")" + filename="$(basename "$squashfs")" + target="$output_dir/$filename" + if [ -f "$target" ] && [ ! -n "$FORCE" ] ; then + echo >&2 "Warning: $target already exists, and -force not specified, not overwriting" + else + mv $squashfs $target + OUTPUT_FILES+=("$target") + fi + sed -i -e "s#^\(^.*$media_path.*\)\($URI\)\(.*$\)#\1$URI/$filename\3#g" $bootloader_files + + done + fi +# }}} + +# copy specified directory to cd {{{ + if [ -n "$DIR" ] ; then + echo >&2 "Copying ${DIR} to generated ISO" + for param in GRML_NAME VERSION RELEASENAME DATE SHORT_NAME \ + VERSION BOOTID RELEASE_INFO ; do + EXCLUDE_PARAM="$EXCLUDE_PARAM --exclude **%${param}%**" + done + rsync -a ${DIR}/ $EXCLUDE_PARAM . + fi + + # adjust files from overlay directory + for GRML_VERSION_FILE in $(find . -name grml-version) ; do + GRML_NAME=$(awk '{print $1}' "$GRML_VERSION_FILE") + VERSION=$(awk '{print $2}' "$GRML_VERSION_FILE") + RELEASENAME=$(sed 's/.*- \(.*\).*\[.*/\1/' "$GRML_VERSION_FILE") + DATE=$(sed 's/.*\[\(.*\)].*/\1/' "$GRML_VERSION_FILE") + SHORT_NAME="$(echo $GRML_NAME | tr -d ',./;\- ')" + RELEASE_INFO="$GRML_NAME $VERSION - $RELEASENAME" + BOOTID=$(cat conf/bootid.txt) + + for param in GRML_NAME VERSION RELEASENAME DATE SHORT_NAME \ + RELEASE_INFO BOOTID ; do + value="$(eval echo '$'"$param")" + + # copy parameterized files from the overlay directory + for file in $(find ${DIR} -name "*%$param%*") ; do + file=${file##$DIR/} + target_dir="$(dirname ${file})" + mkdir -p "$target_dir" || true + cp -r ${DIR}/${file} ./${target_dir}/"$(basename ${file/\%${param}\%/$value})" + done + + # adjust config files + for file in ./boot/isolinux/*.cfg ./boot/isolinux/*.msg \ + ./boot/grub/*.cfg ; do + sed -i "s/%$param%/$value/g" ${file} 2>/dev/null || true + done + done + done # }}} # generate the CD/DVD ISO {{{ - mkisofs -V 'grml-multiboot' -l -r -J -no-pad \ - -no-emul-boot -boot-load-size 4 -boot-info-table \ - -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat \ + $MKISOFS -V 'grml-multiboot' -l -r -J -no-pad $BOOT_ARGS \ -o "$ISOFILE" . # }}} # pad the output ISO to multiples of 256 KiB for partition table support {{{ siz=$($getfilesize "$ISOFILE") - cyls=$(echo "$siz / 512 / 32 / 16 + 1" | bc) # C=$cyls H=16 S=32 - ofs=$(echo "$cyls * 16 * 32 * 512 - 1" | bc) # padding offset (size - 1) + cyls=$(($siz / 512 / 32 / 16 + 1)) # C=$cyls H=16 S=32 + ofs=$(($cyls * 16 * 32 * 512 - 1)) # padding offset (size - 1) dd if=/dev/zero bs=1 count=1 seek=$ofs of="$ISOFILE" 2>/dev/null # }}} +# make ISO dd-able {{{ + if ! $UEFI_ENABLE ; then + echo "Skipping check for --uefi option in isohybrid since prerequisites are not fulfilled." + else + if ! isohybrid --help | grep -q -- --uefi ; then + echo "isohybrid version does NOT support --uefi option, disabling" + else + echo "isohybrid version supports --uefi option" + ISOHYBRID_OPTIONS=--uefi + fi + fi + + echo "Creating dd-able ISO using isohybrid" + isohybrid $ISOHYBRID_OPTIONS "$ISOFILE" +# }}} # cleanup {{{ cd "$ORIG_DIR" @@ -116,7 +305,22 @@ rm -rf "$WRKDIR/cddir" "$WRKDIR/grub_tmp" [[ $WRKDIR_EXISTED = 'false' ]] && rmdir "$WRKDIR" echo "Generated $ISOFILE" + if [ -n "$URI" ] ; then + echo " +Information: +============== +You requested to generate a small ISO image. Your generated +ISO image $ISOFILE does _not_ contain the squashfs files from +the source ISO images. + +You have to provide the extracted squashfs files under $URI. + +ISO image: $ISOFILE +Squashfs files: ${OUTPUT_FILES[@]} +URI: $URI +" + fi # }}} ## EOF ######################################################################### -# vim:foldmethod=marker ts=2 ft=sh ai expandtab tw=80 sw=3 +# vim:foldmethod=marker ts=2 ft=sh ai expandtab tw=80 sw=2