312 lines
8.4 KiB
Bash
Executable file
312 lines
8.4 KiB
Bash
Executable file
#!/bin/sh
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#
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set -ue
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#set -x
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#################### some settings ######################
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# the base directory of your local development files
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ROOT_DIR=$(cd $(dirname "$0"); pwd)
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# the user may define a different location for the local configuration by setting "LOCAL_CONF_DIR"
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# otherwise use the default (local.conf.d)
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LOCALCONF_DIR=${LOCALCONF_DIR:-${ROOT_DIR}/local.conf.d}
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MASTER=$LOCALCONF_DIR/master.img
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BUILD_DIR=${BUILD_DIR:-$ROOT_DIR/build}
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IMAGE_DIR=${IMAGE_DIR:-$BUILD_DIR/images}
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SCRIPTS_DIR=$LOCALCONF_DIR/chroot_scripts.d
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TEMPLATE_DIR=$LOCALCONF_DIR/template-tree.d
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PKG_INSTALL_LIST_DIR=$LOCALCONF_DIR/package-install.lst.d
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PKG_REMOVE_LIST_DIR=$LOCALCONF_DIR/package-remove.lst.d
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ROOT_DIR=$BUILD_DIR/rootfs
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BOOT_DIR=$BUILD_DIR/bootfs
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TMP_DIR=$BUILD_DIR/tmp
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BACKUP_DIR=$BUILD_DIR/backup
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IMAGE_FILE=$IMAGE_DIR/remastered.iso
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IMAGEZ_FILE=$IMAGE_DIR/remastered.iso.z
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CDWRITER=0,0,0
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################# quite constant things #################
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# the relative name of the image file on the cd
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KNOPPIX_IMAGE=KNOPPIX/KNOPPIX
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# isofs options
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MKISOFS_OPTIONS="-allow-multidot -U -D -iso-level 3 -b lib/grub/i386-pc/stage2_eltorito -no-emul-boot -boot-load-size 1 -boot-info-table -pad -R"
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################### general functions ###################
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# maybe this could be useful later
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# for now it DOES NOT WORK
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#
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# get the path of a configuration file - local configuration files
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# supersede default files
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# parameter: base name of the configuration file
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function get_config_file()
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{
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[ -e "$LOCALCONF_DIR/$1" ] && echo "$LOCALCONF_DIR/$1" && return 0
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[ -e "$DEFAULTCONF_DIR/$1" ] && echo "$DEFAULTCONF_DIR/$1" && return 0
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echo "configuration file ($1) not found!" >&2
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exit 1
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}
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# just adds a tabulator at the beginning of every line (nice for sub-processes)
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# you should redirect stderr to stdout before, by adding '2>&1' to the previous command
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# example: "do_something_useful 2>&1 | indentation"
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function indentation()
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{
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sed 's/^/\t/'
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}
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function error_die()
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{
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echo "$2" >&2
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exit $1
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}
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##################### active functions #################
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function master_get()
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{
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umount_procfs
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local MASTER_MNT=$TMP_DIR/mnt-master-iso
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local ROOT_MNT=$TMP_DIR/mnt-roof-cloop
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echo "Mounting the master's image ..."
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local MNT_OPTIONS=
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# use loop option for mount, if the master is a file
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[ -f "$MASTER" ] && MNT_OPTIONS="-o loop"
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mount $MNT_OPTIONS "$MASTER" "$MASTER_MNT" 2>&1 | indentation
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echo "Removing old bootfs files ..."
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rm -rf "$BOOT_DIR" && mkdir "$BOOT_DIR" 2>&1 | indentation
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echo "Copying bootfs files ..."
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local item_dir
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# ignore the big KNOPPIX image
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find "$MASTER_MNT" -type f | sed 's#^$MASTER_MNT/##' | grep -v "^$KNOPPIX_IMAGE_FILE$" | while read item
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do item_dir=$(dirname "$item")
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[ -e "$BOOT_DIR/$item_dir" ] || mkdir -p "$BOOT_DIR/$item_dir"
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cp -a "$MASTER_MNT/$item" "$BOOT_DIR/$item_dir/"
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done 2>&1 | indentation
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echo "Mounting the compressed image file ..."
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mount "$MASTER_MNT/$KNOPPIX_IMAGE_FILE" "$ROOT_MNT" 2>&1 | intendation
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echo "Copying the compressed root system ..."
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cp -a "$ROOT_MNT/." "$ROOT_DIR"
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umount "$ROOT_MNT"
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umount "MASTER_MNT"
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}
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function master_backup()
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{
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umount_procfs
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local root_parent=$(dirname "$ROOT_DIR")
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local root_entry=$(basename "$ROOT_DIR")
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local boot_parent=$(dirname "$BOOT_DIR")
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local boot_entry=$(basename "$BOOT_DIR")
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[ -e "$BACKUP_DIR" ] || mkdir -p "$BACKUP_DIR"
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echo "Creating archive of the boot filesystem ..."
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tar czf "$BACKUP_DIR/bootfs.tar.gz" -C "$boot_parent" "$boot_entry"
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echo "Creating archive of the root filesystem (this may take _very_ long) ..."
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tar czf "$BACKUP_DIR/rootfs.tar.gz" -C "$root_parent" "$root_entry"
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}
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function master_restore()
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{
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umount_procfs
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local boot_backup_file=$BACKUP_DIR/bootfs.tar.gz
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local boot_parent=$(dirname "$BOOT_DIR")
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local root_backup_file=$BACKUP_DIR/rootfs.tar.gz
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local root_parent=$(dirname "$ROOT_DIR")
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# restoring the boot directory (the small one)
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if [ -e "$boot_backup_file" ]
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then if [ -e "$BOOT_DIR" ]
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then echo "Removing old files from boot filesystem ..."
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rm -rf "$BOOT_DIR"
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fi
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echo "Unpacking the boot filesystem archive ..."
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tar xzf "$boot_backup_file" -C "$boot_parent"
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else echo "Warning: no archive for boot filesystem found ($boot_backup_file) - skipping ..."
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fi
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# restoring the root directory (the big one)
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if [ -e "$root_backup_file" ]
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then if [ -e "$ROOT_DIR" ]
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then echo "Removing old files from root filesystem ..."
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rm -rf "$ROOT_DIR"
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fi
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echo "Unpacking the root filesystem archive ..."
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tar xzf "$root_backup_file" -C "$root_parent"
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else echo "Warning: no archive for root filesystem found ($root_backup_file) - skipping ..."
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fi
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}
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function remove_packages()
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{
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local pkg_list=$(find "$PKG_REMOVE_LIST_DIR" -type f | while read a
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do grep -v "^#" "$a" | tr "\n" " "
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done)
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[ -z "$pkg_list" ] && return
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echo "dpkg --force-all -P $pkg_list 2>&1 | grep -v 'which isn.t installed.'" | chroot_image
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}
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function umount_procfs()
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{
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# check for a mounted procfs
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mount | grep -q " $ROOT_DIR/proc " && umount "$ROOT_DIR/proc"
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true
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}
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# execute the content of stdin within the chroot environment
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# runs an interactive shell, if stdin is empty
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function chroot_image()
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{
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umount_procfs
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mount -t proc proc "$ROOT_DIR/proc"
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# ignore errors
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set +e
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local action=$@
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[ -z "$action" ] && action=/bin/bash
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LANG=C TERM=linux chroot "$ROOT_DIR" $action
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set -e
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umount "$ROOT_DIR/proc"
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return
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}
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function create_iso_root()
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{
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umount_procfs
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echo "Creating the iso ..."
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mkisofs $MKISOFS_OPTIONS -o "$IMAGE_FILE" "$ROOT_DIR"
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#kisofs -b lib/grub/i386-pc/stage2_eltorito -no-emul-boot -boot-load-size 1 -boot-info-table -R -U -V "silicann_compressed_livecd" --publisher "Silicann GmbH" -hide-rr-moved -cache-inodes -no-bak -pad -o "$IMAGE_FILE" "$ROOT_DIR"
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}
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function configure()
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{
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if [ ! -e "$ROOT_DIR" ]; then
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echo -e "Directory \"$ROOT_DIR\" not found!"
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echo -e "Did you run \"$0 init\"?"
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exit 1
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fi
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echo "Copying files ..."
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# svn export --force "$TEMPLATE_DIR/." "$ROOT_DIR"
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# only ignore the owner attribut
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cp -r --preserve=mode,timestamps,links "$TEMPLATE_DIR/." "$ROOT_DIR" 2>&1 | indentation
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echo "Configuring ..."
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# filter hidden files - they are usually vi-swap-files :)
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find -L "$SCRIPTS_DIR" -type f | grep -v "/\." | sort | while read scriptname
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do echo "Executing $scriptname ..."
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cat "$scriptname" | chroot_image
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done
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}
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function blanknburn_cdrw()
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{
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cdrecord -v dev=$CDWRITER blank=fast
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cdrecord -v dev=$CDWRITER "$IMAGEZ_FILE"
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}
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function initialization()
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{
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# initialize local directories (easier for users)
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for a in "$LOCALCONF_DIR" "$BUILD_DIR" "$SCRIPTS_DIR" "$PKG_INSTALL_LIST_DIR" "$PKG_REMOVE_LIST_DIR" "$TMP_DIR" "$BACKUP_DIR" "$TEMPLATE_DIR" "$IMAGE_DIR"
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do if [ ! -e "$a" ]
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then echo "Creating directory '$a' ... "
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mkdir -p "$a"
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fi
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done
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}
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################ do it! ######################
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if [ $# -eq 0 ]
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then echo "[`basename $0`] - no arguments supplied - maybe you want to use '--help'" >&2
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exit 1
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fi
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# check for uid=0 (necessary for all operations except for qemu)
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[ "$(id -u)" -ne 0 -a "$*" != "qemuz" ] && echo "this script ($0) has to be called as root" >&2 && exit 1
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initialization
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while [ $# -gt 0 ]
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do case "$1" in
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init )
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master_get
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;;
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backup )
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master_backup
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;;
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restore )
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master_restore
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;;
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packages )
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remove_packages
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#install_packages
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;;
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config )
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configure
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;;
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compress )
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[ -e "$IMAGE_FILE" ] || "$0" iso-root
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cat "$IMAGE_FILE" | chroot_image /usr/bin/create_compressed_fs --best - 65536 >"$BOOT_DIR/KNOPPIX/KNOPPIX"
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;;
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iso-boot )
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[ -e "$BOOT_DIR/KNOPPIX/KNOPPIX" ] || "$0" compress
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mkisofs -pad -l -r -J -v -V "silicann_livecd" --publisher "Silicann GmbH" -b boot/isolinux/isolinux.bin -no-emul-boot -boot-load-size 4 -boot-info-table -c KNOPPIX/boot.cat -hide-rr-moved -o "$IMAGEZ_FILE" "$BOOT_DIR"
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;;
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chroot )
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chroot_image
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;;
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iso-root )
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create_iso_root
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;;
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qemu )
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qemu -cdrom "$IMAGE_FILE" -nics 0
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;;
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qemuz )
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qemu -cdrom "$IMAGEZ_FILE" -nics 0
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;;
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burn )
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blanknburn_cdrw
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;;
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release )
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"$0" init packages config iso-root compress iso-boot
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md5sum "$IMAGEZ_FILE" > "${IMAGE_FILE}.md5sum"
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sha1sum "$IMAGEZ_FILE" > "${IMAGE_FILE}.sha1sum"
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;;
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help|--help )
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echo "Syntax: `basename $0` ( release | init | backup | packages | config | iso-root | iso-boot | compress | burn | help )"
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echo " (you may specify more than one action)"
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echo
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;;
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* )
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echo -e "unknown action: $1"
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echo
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"$0" help
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exit 1
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;;
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esac
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shift
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done
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