Initial commit

files/initramfs/crypt_unlock.sh

@@ -0,0 +1,45 @@
+#!/bin/sh
+
+PREREQ="dropbear"
+
+prereqs() {
+echo "$PREREQ"
+}
+
+case "$1" in
+prereqs)
+prereqs
+exit 0
+;;
+esac
+
+. "${CONFDIR}/initramfs.conf"
+. /usr/share/initramfs-tools/hook-functions
+
+if [ "${DROPBEAR}" != "n" ] && [ -r "/etc/crypttab" ] ; then
+cat > "${DESTDIR}/bin/unlock" << EOF
+#!/bin/sh
+if PATH=/lib/unlock:/bin:/sbin /scripts/local-top/cryptroot; then
+kill \`ps | grep cryptroot | grep -v "grep" | awk '{print \$1}'\`
+# following line kill the remote shell right after the passphrase has
+# been entered.
+kill -9 \`ps | grep "\-sh" | grep -v "grep" | awk '{print \$1}'\`
+exit 0
+fi
+exit 1
+EOF
+
+chmod 755 "${DESTDIR}/bin/unlock"
+
+mkdir -p "${DESTDIR}/lib/unlock"
+cat > "${DESTDIR}/lib/unlock/plymouth" << EOF
+#!/bin/sh
+[ "\$1" == "--ping" ] && exit 1
+/bin/plymouth "\$@"
+EOF
+
+chmod 755 "${DESTDIR}/lib/unlock/plymouth"
+
+echo To unlock root-partition run "unlock" >> ${DESTDIR}/etc/motd
+
+fi

files/initramfs/expand-premount

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+set -e
+
+# Check for cryptdevice variable
+if [ -z "$cryptdevice" ] ; then
+  echo "unable to get cryptdevice variable (local-premount)"
+  exit 1
+fi
+
+if [ -n "$ROOT" ] ; then
+  # Resize encrypted root partition
+  cryptsetup resize "${ROOT}"
+  e2fsck -fp "${ROOT}"
+  resize2fs -f "${ROOT}"
+  e2fsck -fp "${ROOT}"
+fi
+
+exit 0

files/initramfs/expand-tools

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+set -e
+
+# Use initramfs utility functions
+. /usr/share/initramfs-tools/hook-functions
+
+# Add binaries required for resizing the filesystem
+copy_exec /bin/grep /bin
+copy_exec /usr/bin/awk /bin
+copy_exec /usr/bin/cut /bin
+copy_exec /usr/bin/tail /bin
+copy_exec /sbin/fdisk /sbin
+copy_exec /sbin/parted /sbin
+copy_exec /sbin/e2fsck /sbin
+copy_exec /sbin/resize2fs /sbin
+copy_exec /sbin/partprobe /sbin
+
+exit 0

files/initramfs/expand_encrypted_rootfs

@@ -0,0 +1,96 @@
+#!/bin/sh
+# expand_encrypted_rootfs initramfs-tools boot script
+
+# dependencies: grep awk cut tail fdisk parted e2fsck resize2fs
+
+set -e
+
+# Wait for USB devices to be ready
+sleep 5
+
+# Use initramfs utility functions
+if [ -r "/scripts/functions" ] ; then
+  . /scripts/functions
+fi
+
+# Check for cryptdevice variable
+if [ -z "$cryptdevice" ] ; then
+  echo "unable to get cryptdevice variable (init-premount)"
+  return 1
+fi
+
+# Detect root partition device
+ROOT_PART=$(echo $cryptdevice | awk -F"/|:" '{ print $3 }')
+if [ -z "$ROOT_PART" ] ; then
+  log_warning_msg "unable to detect encrypted root partition device (cryptdevice)"
+  return 1
+fi
+
+# Extract root device name
+case "${ROOT_PART}" in
+  mmcblk0*) ROOT_DEV=mmcblk0 ;;
+  sda*)     ROOT_DEV=sda ;;
+esac
+
+# Check detected root partition name
+PART_NUM=$(echo ${ROOT_PART} | grep -o '[1-9][0-9]*$')
+if [ "$PART_NUM" = "$ROOT_PART" ] ; then
+  log_warning_msg "$ROOT_PART is not an SD card. Don't know how to expand"
+  return 1
+fi
+
+# NOTE: the NOOBS partition layout confuses parted. For now, let's only
+# agree to work with a sufficiently simple partition layout
+if [ "$PART_NUM" -gt 2 ] ; then
+  log_warning_msg "Your partition layout is not currently supported by this tool."
+  return 1
+fi
+
+# Check if last partition number
+LAST_PART_NUM=$(parted /dev/${ROOT_DEV} -ms unit s p | tail -n 1 | cut -f 1 -d:)
+if [ $LAST_PART_NUM -ne $PART_NUM ]; then
+  log_warning_msg "$ROOT_PART is not the last partition. Don't know how to expand"
+  return 1
+fi
+
+# Get the starting offset of the root partition
+PART_START=$(parted /dev/${ROOT_DEV} -ms unit s p | grep "^${PART_NUM}" | cut -f 2 -d: | sed 's/[^0-9]//g')
+if [ -z "$PART_START" ] ; then
+  log_warning_msg "${ROOT_DEV} unable to get starting sector of the partition"
+  return 1
+fi
+
+# Get the current last sector of the root partition
+PART_END=$(parted /dev/${ROOT_DEV} -ms unit s p | grep "^${PART_NUM}" | cut -f 3 -d: | sed 's/[^0-9]//g')
+if [ -z "$PART_END" ] ; then
+  log_warning_msg "${ROOT_DEV} unable to get last sector of the partition"
+  return 1
+fi
+
+# Get the possible last sector for the root partition
+PART_LAST=$(fdisk -l /dev/${ROOT_DEV} | grep '^Disk.*sectors' | awk '{ print $7 - 1 }')
+if [ -z "$PART_LAST" ] ; then
+  log_warning_msg "${ROOT_DEV} unable to get last possible sector of the partition"
+  return 1
+fi
+
+### Since rc.local is run with "sh -e", let's add "|| true" to prevent premature exit
+if [ $PART_END != $PART_LAST ] ; then
+  fdisk /dev/${ROOT_DEV} 2> /dev/null <<EOF2 || true
+p
+d
+$PART_NUM
+n
+p
+$PART_NUM
+$PART_START
+$PART_LAST
+p
+w
+EOF2
+
+  partprobe
+  log_success_msg "Root partition successfully resized."
+else
+  log_success_msg "Root partition already resized."
+fi