+# }}}
+
+# It is not possible to build amd64 on i686. {{{
+CURRENT_ARCH="$(uname -m)"
+if [ "$CURRENT_ARCH" != "x86_64" ] ; then
+ if [ "$ARCH" = "amd64" ] ; then
+ eerror "It is not possible to build amd64 on $CURRENT_ARCH." ; eend 1
+ bailout 1
+ fi
+fi
+# }}}
+
+checkconfiguration
+
+# finally make sure at least $TARGET is set [the partition for the new system] {{{
+if [ -n "$TARGET" ] ; then
+ SHORT_TARGET="${TARGET##*/}"
+else
+ eerror "Please adjust $CONFFILES/config or..."
+ eerror "... use the interactive version for configuration before running ${0}" ; eend 1
+ bailout 1
+fi
+# }}}
+
+# stages setup {{{
+if [ -z "$STAGES" ] ; then
+ STAGES="/var/cache/grml-debootstrap/stages_${SHORT_TARGET}"
+ [ -d "$STAGES" ] || mkdir -p "$STAGES"
+fi
+
+if [ -r "$STAGES"/grml-debootstrap ] ; then
+ if grep -q done $STAGES/grml-debootstrap ; then
+ eerror "Error: grml-debootstrap has been executed already, won't continue therefore."
+ eerror "If you want to re-execute grml-debootstrap just manually remove ${STAGES}" ; eend 1
+ fi
+fi
+# }}}
+
+# partition handling {{{
+PARTITION=''
+DIRECTORY=''
+
+set_target_directory(){
+ # assume we are installing into a directory, don't run mkfs and grub related stuff therefore
+ DIRECTORY=1
+ MNTPOINT="$TARGET"
+ MKFS=''
+ TUNE2FS=''
+ FSCK=''
+ # make sure we normalise the path to an absolute directory name so something like:
+ # mkdir -p foo/a bar/a; (cd foo; grml-debootstrap -t a)&; (cd bar; grml-debootstrap -t a)&; wait
+ # works
+ TARGET="$(readlink -f $TARGET)"
+}
+
+if [ -b "$TARGET" ] || [ -n "$VIRTUAL" ] ; then
+ PARTITION=1
+else
+ set_target_directory
+fi
+# }}}
+
+# make sure we have the right syntax when using an iso image {{{
+if [ -n "$ISO" ] ; then
+ case $ISO in
+ file*) # do nothing
+ ;;
+ *)
+ ISO=file:$ISO
+ ;;
+ esac
+fi
+ISODIR=${ISO##file:}
+ISODIR=${ISODIR%%/}
+# }}}
+
+# Debian ISOs do not contain signed Release files {{{
+if [ -n "$ISO" ] ; then
+ DEBOOTSTRAP_OPT="$DEBOOTSTRAP_OPT --no-check-gpg"
+fi
+# }}}
+
+# create filesystem {{{
+mkfs() {
+ if [ -n "$DIRECTORY" ] ; then
+ einfo "Running grml-debootstrap on a directory, skipping mkfs stage."
+ else
+ if grep -q "$TARGET" /proc/mounts ; then
+ eerror "$TARGET already mounted, exiting to avoid possible damage. (Manually unmount $TARGET)" ; eend 1
+ bailout 1
+ fi
+
+ if [ -n "$MKFS" ] ; then
+ einfo "Running $MKFS on $TARGET"
+ $MKFS $TARGET ; RC=$?
+
+ if [ "$FIXED_DISK_IDENTIFIERS" = "yes" ] ; then
+ if ! echo "$MKFS" | grep -q "mkfs.ext" ; then
+ eerror "Not changing disk uuid for $TARGET because $MKFS doesn't seem to match for ext{2,3,4} file system"
+ eend 1
+ bailout 1
+ else
+ einfo "Changing disk uuid for $TARGET to fixed (non-random) value using tune2fs"
+ tune2fs "$TARGET" -U 26ada0c0-1165-4098-884d-aafd2220c2c6
+ eend $?
+ fi
+ fi
+
+ # make sure /dev/disk/by-uuid/... is up2date, otherwise grub
+ # will fail to detect the uuid in the chroot
+ if echo "$TARGET" | grep -q "/dev/md" ; then
+ blockdev --rereadpt "${TARGET}"
+ elif ! [ -n "$VIRTUAL" ] ; then
+ blockdev --rereadpt "${TARGET%%[0-9]*}"
+ fi
+ # give the system 2 seconds, otherwise we might run into
+ # race conditions :-/
+ sleep 2
+
+ eval $(blkid -o udev $TARGET 2>/dev/null)
+ [ -n "$ID_FS_UUID" ] && TARGET_UUID="$ID_FS_UUID" || TARGET_UUID=""
+
+ eend $RC
+ fi
+
+ fi
+}
+# }}}
+
+# modify filesystem settings {{{
+tunefs() {
+ if [ -n "$TUNE2FS" ] && echo "$MKFS" | grep -q "mkfs.ext" ; then
+ einfo "Disabling automatic filesystem check on $TARGET via tune2fs"
+ $TUNE2FS $TARGET
+ eend $?
+ fi
+}
+# }}}
+
+# mount the new partition or if it's a directory do nothing at all {{{
+mount_target() {
+ if [ -n "$DIRECTORY" ] ; then
+ einfo "Running grml-debootstrap on a directory, nothing to mount."
+ else
+ if grep -q $TARGET /proc/mounts ; then
+ ewarn "$TARGET already mounted, continuing anyway." ; eend 0
+ else
+ if ! [ -d "${MNTPOINT}" ] ; then
+ [ -n "$VIRTUAL" ] || mkdir -p "${MNTPOINT}"
+ fi
+ einfo "Mounting $TARGET to $MNTPOINT"
+ mkdir -p "$MNTPOINT"
+ mount -o rw,suid,dev $TARGET $MNTPOINT
+ eend $?
+ fi
+ fi
+ if [ -n "$ISODIR" ] ; then
+ einfo "Mounting Debian image loopback to $MNTPOINT/$ISODIR."
+ mkdir -p "$MNTPOINT/$ISODIR"
+ mount --bind "$ISODIR" "$MNTPOINT/$ISODIR"
+ eend $?
+ fi
+}
+# }}}
+
+# prepare VM image for usage with debootstrap {{{
+prepare_vm() {
+ if [ -z "$VIRTUAL" ] ; then
+ return 0 # be quiet by intention
+ fi
+
+ if [ -b "$TARGET" -a -n "$VMFILE" ] ; then
+ eerror "Error: specified virtual disk target ($TARGET) is an existing block device."
+ eend 1
+ bailout 1
+ fi
+ if [ ! -b "$TARGET" -a -z "$VMFILE" ] ; then
+ eerror "Error: specified virtual disk target ($TARGET) does not exist yet."
+ eend 1
+ bailout 1
+ fi
+
+ ORIG_TARGET="$TARGET" # store for later reuse
+
+ if [ -n "$VMFILE" ]; then
+ qemu-img create -f raw "${TARGET}" "${VMSIZE}"
+ fi
+ echo 4 66 | /usr/share/grml-debootstrap/bootgrub.mksh -A | dd of="$TARGET" conv=notrunc
+ dd if=/dev/zero bs=1 conv=notrunc count=64 seek=446 of="$TARGET"
+ if [ "$FIXED_DISK_IDENTIFIERS" = "yes" ] ; then
+ einfo "Adjusting disk signature to a fixed (non-random) value"
+ MBRTMPFILE=$(mktemp)
+ dd if="${TARGET}" of="${MBRTMPFILE}" bs=512 count=1
+ echo -en "\x41\x41\x41\x41\x41" | dd of="${MBRTMPFILE}" conv=notrunc seek=440 bs=1
+ dd if="${MBRTMPFILE}" of="${TARGET}" conv=notrunc
+ eend $?
+ fi
+ parted -s "${TARGET}" 'mkpart primary ext4 2M -1'
+
+ # if dm-mod isn't available then kpartx will fail with
+ # "Is device-mapper driver missing from kernel? [...]"
+ if ! kpartx -av $TARGET >/dev/null 2>&1 || ! grep -q device-mapper /proc/misc >/dev/null 2>&1 ; then
+ einfo "Device-mapper not ready yet, trying to load dm-mod module."
+ modprobe dm-mod ; eend $?
+ fi
+
+ # make sure loop module is present
+ if ! losetup -f >/dev/null 2>&1; then
+ einfo "Can not find a usable loop device, retrying after loading loop module."
+ modprobe loop
+ if losetup -f >/dev/null 2>&1; then
+ einfo "Found a usable loop device now, continuing."
+ else
+ eerror "Error finding usable loop device" ; eend 1
+ bailout 1
+ fi
+ fi
+
+ DEVINFO=$(kpartx -av $TARGET) # 'add map loop1p1 (253:0): 0 6289408 linear /dev/loop1 2048'
+ if [ -z "${DEVINFO}" ] ; then
+ eerror "Error setting up loopback device." ; eend 1
+ bailout 1
+ fi
+
+ # hopefully this always works as expected
+ LOOP=$(echo ${DEVINFO} | sed 's/.* linear //; s/ [[:digit:]]*//') # '/dev/loop1'
+ BLOCKDEV=$(echo "${DEVINFO}" | sed -e 's/.* (\(.*:.*\)).*/\1/') # '253:0'
+ LOOP_PART="$(echo ${DEVINFO##add map } | sed 's/ .*//')" # '/dev/loop1p1'
+ export TARGET="/dev/mapper/$LOOP_PART" # '/dev/mapper/loop1p1'
+
+ blockdev --rereadpt "${LOOP}"
+
+ if [ -z "$TARGET" ] ; then
+ eerror "Error: target could not be set to according /dev/mapper/* device." ; eend 1
+ bailout 1
+ fi
+}
+# }}}