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#!/bin/bash
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set -e
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set -x
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. @osdir@/common.sh
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CACHE_FILE="$HELPER_DIR/cache.tar"
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ARCH=amd64
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EXTRA_PKGS="linux-image-amd64,e2fsprogs,ntfs-3g,xmlstarlet"
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EXTRA_PKGS="linux-image-amd64,e2fsprogs,ntfs-3g,ntfsprogs,xmlstarlet,python"
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if [ ! -e "$HELPER_PKG" ]; then
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log_error "Helper package \`$HELPER_PKG' not found."
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log_error "You need to provide this for the script to work"
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exit 1
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fi
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cat >&1 <<EOF
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This program will overwrite the following files:
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\`$HELPER_DIR/initrd'
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\`$HELPER_DIR/kernel'
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\`$HELPER_DIR/image'
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EOF
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while [[ 1 ]]; do
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echo -n "Do you want to continue [y/N]?"
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read answer
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[ "$(echo -n "$answer" | tr [A-Z] [a-z])" = "y" ] && break
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if [ -z "$answer" -o "$(echo -n "$answer" | tr [A-Z] [a-z])" = "n" ]; then
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log_error "Abord."
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exit 1
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fi
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done
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rm -f "$HELPER_DIR/initrd" "$HELPER_DIR/kernel" "$HELPER_DIR/image"
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echo -n "Allocating space for helper disk image..."
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helper_img=$(mktemp $HELPER_DIR/image.XXXXXXXX)
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dd if=/dev/zero of=$helper_img bs=1k count=400000
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dd if=/dev/zero of=$helper_img bs=1k count=400000 &> /dev/null
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echo "done"
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blockdev=$(losetup -sf $helper_img)
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CLEANUP+=("losetup -d $blockdev")
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sleep 1 # sometimes losetup returns and the device is still busy..
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echo -n "Creating partitions..."
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format_disk0 $blockdev "extdump"
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echo "done"
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root_dev=$(map_disk0 $blockdev)-1
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CLEANUP+=("unmap_disk0 $blockdev")
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| ... | ... | |
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mount $root_dev $TMPDIR
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CLEANUP+=("umount $root_dev")
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echo "Checking for cached root filesystem file \`$CACHE_FILE'..."
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if [ -f "$CACHE_FILE" ]; then
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echo "found"
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tar xf "$CACHE_FILE" -C $TMPDIR
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else
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echo "not found"
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echo "Debootstraping to create a new root filesystem:"
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debootstrap --arch "$ARCH" --include $EXTRA_PKGS --variant=minbase \
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squeeze $TMPDIR
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| ... | ... | |
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mv -f "$TMP_CACHE" "$CACHE_FILE"
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fi
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echo -n "Configureing filesystem..."
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echo helper > $TMPDIR/etc/hostname
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cat > $TMPDIR/etc/fstab <<EOF
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| ... | ... | |
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/dev/sda1 / ext3 defaults 0 1
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proc /proc proc defaults 0 0
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EOF
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echo "done"
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echo -n "Extracting kernel..."
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if [ ! -L "$TMPDIR/vmlinuz" -o ! -L "$TMPDIR/vmlinuz" ]; then
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log_error "vmlinuz or initrd.img link in root is missing."
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log_error "I don't know how to find a usable kernel/initrd pair."
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exit 1
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fi
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echo "done"
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kernel=$(readlink -en $TMPDIR/vmlinuz)
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initrd=$(readlink -en $TMPDIR/initrd.img)
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| ... | ... | |
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rm $TMPDIR/vmlinuz $TMPDIR/initrd.img
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echo "Installing snf-image-helper pkg in the new image..."
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cp $HELPER_PKG $TMPDIR/tmp/
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pkg_name=$(basename "$HELPER_PKG")
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CLEANUP+=("rm $TMPDIR/tmp/$pkg_name")
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chroot ${TMPDIR} dpkg -i /tmp/$pkg_name
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echo "done"
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cleanup
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mv $helper_img $HELPER_DIR/image
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