Andreas V. 'netrunner' Meier
20 years ago
1 changed files with 142 additions and 0 deletions
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+142 -0scripts/Create-UMLRootfs
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#!/bin/bash |
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# |
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# Commands in isofs.txt files: |
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# |
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# EVERY from to Put this on every disk |
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# DISK1 from to Put this on the 1st disk |
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# SINGLE from to Put it on any disk |
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# SPLIT from to You may split it up over many disks |
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# |
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# BOOT boot-options Add this mkisofs options for 1st disk |
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# |
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# If you want to add multiple 'BOOT' lines, use the tag-name 'BOOTx' for |
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# the 2nd and all further lines. |
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# |
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# SCRIPT script-name args Run given script for each image |
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# |
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# Intended for image post-processing. The first attached argument is the CD |
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# number and the second the image file. |
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# |
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cleanup () { |
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# Cleanup used for EXIT |
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umount $mountpoint |
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rmdir -p $mountpoint |
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losetup -d $loopdevice |
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} |
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eval `grep rockver scripts/parse-config` |
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if [ $# -eq 0 ] ; then |
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echo |
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echo "Usage: $0 [ -size MB ] [ -mkdebug ] [-prefix FS-Prefix] [-fs filesystem] Config" |
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echo |
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echo "E.g.: $0 -prefix my myconfig" |
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echo "this will leave you with a file 'my_linux' (the kernel) and a file" |
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echo "'my_rootfs' (the file system). Just start it with ./linux" |
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echo |
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exit 1 |
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fi |
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src=0; mkdebug=0; fssize=0; full=0; |
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filesystem="reiserfs" |
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while true ; do |
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case "$1" in |
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-size) |
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fssize=$2 ; shift ; shift ;; |
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-mkdebug) |
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mkdebug=1 ; shift ;; |
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-fs) |
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filesystem=$2; shift; shift ;; |
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-prefix) |
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ufsprefix=$2; shift; shift ;; |
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-full) |
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full=1; shift ;; |
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-* | '') |
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$0 ; exit 1 ;; |
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*) |
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cfg=$1 ; shift ; break ;; |
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esac |
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done |
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if [ ! "x$ufsprefix" = "x" ]; then fsprefix=${ufsprefix}_; else fsprefix=""; fi |
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if [ -f ${fsprefix}rootfs -o -f ${fsprefix}linux ]; then |
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echo "Sorry, there exists a file with the same name, please make sure" |
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echo "that no ${fsprefix}linux and no ${fsprefix}rootfs exist here." |
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exit 1 |
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fi |
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# get the build id |
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if [ ! -d config/$cfg ]; then |
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echo "I cannot find the selected Config '$cfg'!" |
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exit 1 |
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fi |
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buildid="`grep '^export ROCKCFG_ID=' config/$cfg/config | cut -f2 -d\'`" |
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if [ ! -d build/$buildid ]; then |
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echo "I cannot find the build for the Config '$cfg' (build/$buildid)" |
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exit 1; |
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fi |
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# check if there is a kernel executable |
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if [ ! -f build/$buildid/boot/linux -o "x" = "x$(grep UMLPATCH=\'1\' config/$cfg/config)" ]; then |
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echo "I cannot find the executable kernel, " |
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echo "or it seems that the UML Patch was not applied to the kernel." |
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exit 1; |
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fi |
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# calculate the default disk size as all packages of that config + 1/3 of the same |
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if [ $fssize = 0 ]; then |
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echo "Calculating optimal image size, may take some time ..." |
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cfssize=$(cd build/$buildid; du -sm --exclude ROCK | awk '{print $1;}';cd $OLDPWD) |
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echo "All packages consume $cfssize MB" |
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freespace=$(( $cfssize / 3 )) |
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fssize=$(( $cfssize + $freespace )) |
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echo "Therefore I propose a fs size of $fssize, that leaves you $freespace MB of free space." |
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fi |
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# check if there is enough disk space |
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hereiskbfree=$(df -P $PWD | tail -n 1 | awk '{ print $4; }') |
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hereismbfree=$(( $hereiskbfree / 1024 )) |
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if [ $hereismbfree -lt $fssize ]; then |
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echo "Sorry, you have only $hereismbfree MB free here, " |
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echo "that is not enough for a rootfs of $fssize MB." |
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exit 1 |
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fi |
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# create the empty rootfs file |
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dd if=/dev/zero of=${fsprefix}rootfs seek=${fssize} count=1 bs=1M |
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trap 'cleanup' EXIT |
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# find a free loop device |
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for i in `ls /dev/loop/*`; do |
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echo $i |
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losetup $i ${fsprefix}rootfs |
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if [ $? = 0 ]; then |
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loopdevice=$i |
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break |
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fi |
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done |
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# make a filesystem |
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yes | mkfs -t $filesystem $loopdevice |
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# loop-mount the file |
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mountpoint=${fsprefix}rootfs_mnt |
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mkdir -p $mountpoint |
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mount -t $filesystem $loopdevice $mountpoint |
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# install all |
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echo "Installing files, may take some time..." |
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if [ $full = 1 ]; then |
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for i in build/$buildid/*; do |
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if [ $i = "build/$buildid/ROCK" ]; then continue; fi |
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cp -rp $i $mountpoint |
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done |
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fi |
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# Copy the executable kernel |
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cp $mountpoint/boot/linux ${fsprefix}linux |
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