build/apex/art_postinstall_hook.sh

#!/system/bin/sh

# Copyright (C) 2019 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

. `dirname $0`/art_prepostinstall_utils || exit 100

log_info "=== ART runtime post-install ==="

# Check for OTA base folder.
if [ ! -d /data/ota/dalvik-cache ] ; then
  log_error "Postinstall dalvik-cache does not exist or is not a directory"
  exit 101
fi

log_info "Checking fsverity"

# Measure (and enable) fsverity to see if things are installed. Enable is not
# idempotent, and we'd need to parse the error string to see whether it says
# data was installed. Rather do a two-step.
FILES=`find /data/ota/dalvik-cache -type f`
for FILE in $FILES ; do
  fsverity measure $FILE && continue
  ENABLE_MSG=`fsverity enable $FILE 2>&1` && continue

  # No installed data, can't enable. Clean up and fail.
  log_error "Enable failed: $ENABLE_MSG"
  rm -rf /data/ota/dalvik-cache
  exit 200
done

log_info "Moving dalvik-cache"

rm -rf /data/dalvik-cache/* || exit 102
mv /data/ota/dalvik-cache/* /data/dalvik-cache/ || exit 103
restorecon -R -F /data/dalvik-cache/* || exit 104