# # Setup fstab and initramfs # # Load utility functions . ./functions.sh # Install and setup fstab install_readonly files/mount/fstab "${ETC_DIR}/fstab" # Generate initramfs file if [ "$ENABLE_INITRAMFS" = true ] ; then if [ "$ENABLE_CRYPTFS" = true ] ; then # Include initramfs scripts to auto expand encrypted root partition if [ "$EXPANDROOT" = true ] ; then install_exec files/initramfs/expand_encrypted_rootfs "${ETC_DIR}/initramfs-tools/scripts/init-premount/expand_encrypted_rootfs" install_exec files/initramfs/expand-premount "${ETC_DIR}/initramfs-tools/scripts/local-premount/expand-premount" install_exec files/initramfs/expand-tools "${ETC_DIR}/initramfs-tools/hooks/expand-tools" fi # Replace fstab root partition with encrypted partition mapping sed -i "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING}/" "${ETC_DIR}/fstab" # Add encrypted partition to crypttab and fstab install_readonly files/mount/crypttab "${ETC_DIR}/crypttab" echo "${CRYPTFS_MAPPING} /dev/mmcblk0p2 none luks,initramfs" >> "${ETC_DIR}/crypttab" if [ "$ENABLE_USBBOOT" = true ] && [ "$ENABLE_SPLITFS" = false ]; then sed -i "s/mmcblk0p1/sda1/" "${ETC_DIR}/fstab" # Add usb/sda2 disk to crypttab sed -i "s/mmcblk0p2/sda2/" "${ETC_DIR}/crypttab" fi # Add encrypted root partition to fstab and crypttab if [ "$ENABLE_SPLITFS" = true ] && [ "$ENABLE_USBBOOT" = false ]; then # Add usb/sda1 disk to crypttab sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/crypttab" fi if [ "$CRYPTFS_DROPBEAR" = true ] ; then if [ "$ENABLE_ETH_DHCP" = false ] ; then # Get cdir from NET_ADDRESS e.g. 24 cdir=$(printf "%s" "${NET_ETH_ADDRESS}" | cut -d '/' -f2) # Convert cdir ro netmask e.g. 24 to 255.255.255.0 NET_MASK=$(cdr2mask "$cdir") # Write static ip settings to "${ETC_DIR}"/initramfs-tools/initramfs.conf # ip=:::::: sed -i "\$a\nIP=${NET_ETH_ADDRESS}::${NET_ETH_GATEWAY}:${NET_MASK}:${HOSTNAME}:" "${ETC_DIR}"/initramfs-tools/initramfs.conf else sed -i "\$a\nIP=::::${HOSTNAME}::dhcp" "${ETC_DIR}"/initramfs-tools/initramfs.conf fi if [ -n "$CRYPTFS_DROPBEAR_PUBKEY" ] && [ -f "$CRYPTFS_DROPBEAR_PUBKEY" ] ; then install_readonly "${CRYPTFS_DROPBEAR_PUBKEY}" "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub cat "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub >> "${ETC_DIR}"/dropbear-initramfs/authorized_keys else # Create key chroot_exec /usr/bin/dropbearkey -t rsa -f /etc/dropbear-initramfs/id_rsa.dropbear # Convert dropbear key to openssh key chroot_exec /usr/lib/dropbear/dropbearconvert dropbear openssh /etc/dropbear-initramfs/id_rsa.dropbear /etc/dropbear-initramfs/id_rsa # Get Public Key Part chroot_exec /usr/bin/dropbearkey -y -f /etc/dropbear-initramfs/id_rsa.dropbear | chroot_exec tee /etc/dropbear-initramfs/id_rsa.pub # Delete unwanted lines sed -i '/Public/d' "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub sed -i '/Fingerprint/d' "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub # Trust the new key cat "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub > "${ETC_DIR}"/dropbear-initramfs/authorized_keys # Save Keys - convert with putty from rsa/openssh to puttkey cp -f "${ETC_DIR}"/dropbear-initramfs/id_rsa "${BASEDIR}"/dropbear_initramfs_key.rsa # Get unlock script install_exec files/initramfs/crypt_unlock.sh "${ETC_DIR}"/initramfs-tools/hooks/crypt_unlock.sh # Enable Dropbear inside initramfs printf "#\n# DROPBEAR: [ y | n ]\n#\n\nDROPBEAR=y\n" >> "${ETC_DIR}/initramfs-tools/initramfs.conf" # Enable Dropbear inside initramfs sed -i "54 i sleep 5" "${R}"/usr/share/initramfs-tools/scripts/init-premount/dropbear fi # CRYPTFSDROPBEAR=false else # Disable SSHD inside initramfs printf "#\n# DROPBEAR: [ y | n ]\n#\n\nDROPBEAR=n\n" >> "${ETC_DIR}/initramfs-tools/initramfs.conf" fi # Add cryptsetup modules to initramfs #printf "#\n# CRYPTSETUP: [ y | n ]\n#\n\nCRYPTSETUP=y\n" >> "${ETC_DIR}/initramfs-tools/conf-hook" # Dummy mapping required by mkinitramfs echo "0 1 crypt "${CRYPTFS_CIPHER}" ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 0 7:0 4096" | chroot_exec dmsetup create "${CRYPTFS_MAPPING}" # Generate initramfs with encrypted root partition support chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}" # Remove dummy mapping chroot_exec cryptsetup close "${CRYPTFS_MAPPING}" # CRYPTFS=false else #USB BOOT /boot on sda1 / on sda2 if [ "$ENABLE_USBBOOT" = true ] ; then sed -i "s/mmcblk0p1/sda1/" "${ETC_DIR}/fstab" sed -i "s/mmcblk0p2/sda2/" "${ETC_DIR}/fstab" fi # Add usb/sda disk root partition to fstab if [ "$ENABLE_SPLITFS" = true ] ; then sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/fstab" fi # Generate initramfs without encrypted root partition support chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}" fi fi