New Full AU Format w/ support for kernel partition.

src/platform/memento_softwareupdate/memento_updater.sh

 #!/bin/bash
 
 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This is the autoupdater for Memento. When called it consults Omaha to see
 # if there's an update available. If so, it downloads it to the other
 # partition on the Memento USB stick, then alters the MBR and partitions
 # as needed so the next reboot will boot into the newly installed partition.
@@ skipping 128 matching lines @@
   INSTALL_DEV="${FLAGS_dst_partition}"
 else
   INSTALL_DEV=$(echo $LOCAL_DEV | tr '35' '53')
 fi
 NEW_PART_NUM=${INSTALL_DEV##*/*[a-z]}
 # The kernel needs to be installed to its own partition. We'll handle that in
 # the postinst script (from the new rootfs). partitions 2&3 are image A,
 # partitions 4&5 are image B.
 KINSTALL_DEV=$(echo $INSTALL_DEV | tr '35' '24')
 
+if [ "$KINSTALL_DEV" = "$INSTALL_DEV" ]; then
+  log "kernel install partition the same as rootfs install partition!"
+  log "  (${KINSTALL_DEV})"
+  exit 1
+fi
+
 # Find whole disk device.
 ROOT_DEV=${INSTALL_DEV%%[0-9]*}
 
 # Do some device sanity checks.
 if ! expr match "$LOCAL_DEV" '^/dev/[a-z][a-z]*[12345]$' > /dev/null
 then
   log "didnt find good local device. local: $LOCAL_DEV install: $INSTALL_DEV"
   exit 1
 fi
 if ! expr match "$INSTALL_DEV" '^/dev/[a-z][a-z]*[12345]$' > /dev/null
@@ skipping 31 matching lines @@
 # wget - fetch file, send to stdout
 # tee - save a copy off to device, also send to stdout
 # openssl - calculate the sha1 hash of stdin, send checksum to stdout
 # tr - convert trailing newline to a space
 # pipestatus - append return codes for all prior commands. should all be 0
 
 CHECKSUM_FILE="/tmp/memento_autoupdate_checksum"
 RETURNED_CODES=$(wget -O - --load-cookies <(echo "$COOKIES") \
     "$IMG_URL" 2>> "$MEMENTO_AU_LOG" | \
     tee >(openssl sha1 -binary | openssl base64 > "$CHECKSUM_FILE") | \
-    gzip -d > "$INSTALL_DEV" ; echo ${PIPESTATUS[*]})
+    gzip -d | $(dirname "$0")/split_write "$KINSTALL_DEV" "$INSTALL_DEV" ; \
+    echo ${PIPESTATUS[*]})
 
-EXPECTED_CODES="0 0 0"
+EXPECTED_CODES="0 0 0 0"
 CALCULATED_CS=$(cat "$CHECKSUM_FILE")
 rm -f "$CHECKSUM_FILE"
 
 if [[ ("$CALCULATED_CS" == "$CHECKSUM")  && \
       ("$RETURNED_CODES" == "$EXPECTED_CODES") ]]
 then
   # wonderful
   log download success
 else
   # either checksum mismatch or ran out of space.
@@ skipping 44 matching lines @@
       version_number_greater_than "$APP_VERSION" "$NEW_VERSION"
     then
       log "Can't upgrade to older version: " "$NEW_VERSION"
       umount "$MOUNTPOINT"
       rmdir "$MOUNTPOINT"
       exit 1
     fi
   fi
 fi
 
-"$MOUNTPOINT"/postinst "$INSTALL_DEV" "$KINSTALL_DEV" 2>&1 | \
-  cat >> "$MEMENTO_AU_LOG"
+"$MOUNTPOINT"/postinst "$INSTALL_DEV" 2>&1 | cat >> "$MEMENTO_AU_LOG"
 [ "${PIPESTATUS[*]}" = "0 0" ]
 POSTINST_RETURN_CODE=$?
 umount "$MOUNTPOINT"
 rmdir "$MOUNTPOINT"
 
 # $1 is return code, $2 is command
 function abort_update_if_cmd_failed_long {
   if [ "$1" -ne "0" ]
   then
     log "$2 failed with error code  $1 . aborting update"
@@ skipping 30 matching lines @@
 abort_update_if_cmd_failed
 
 if [ -z "${FLAGS_dst_partition}" ]; then
   # mark update as complete so we don't try to update again
   touch "$UPDATED_COMPLETED_FILE"
 fi
 
 # tell user to reboot
 log Autoupdate applied. You should now reboot
 echo UPDATED