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#!/system/bin/sh
#
# Copyright (C) 2016 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.
# create files with 644 (global read) permissions.
umask 022
# Helper function to copy files
function do_copy() {
source_file=$1
dest_name=$2
# Move to a temporary file so we can do a rename and have the preopted file
# appear atomically in the filesystem.
temp_dest_name=${dest_name}.tmp
if ! cp ${source_file} ${temp_dest_name} ; then
log -p w -t cppreopts "Unable to copy file ${source_file} to ${temp_dest_name}!"
else
log -p i -t cppreopts "Copied file from ${source_file} to ${temp_dest_name}"
fsync ${temp_dest_name}
if ! mv ${temp_dest_name} ${dest_name} ; then
log -p w -t cppreopts "Unable to rename temporary file from ${temp_dest_name} to ${dest_name}"
rm ${temp_dest_name} || log -p w -t cppreopts "Unable to remove temporary file ${temp_dest_name}"
else
fsync ${dest_name}
log -p i -t cppreopts "Renamed temporary file from ${temp_dest_name} to ${dest_name}"
fi
fi
}
if [ $# -eq 1 ]; then
# Where the system_b is mounted that contains the preopt'd files
mountpoint=$1
if ! test -f ${mountpoint}/system-other-odex-marker ; then
log -p i -t cppreopts "system_other partition does not appear to have been built to contain preopted files."
exit 1
fi
log -p i -t cppreopts "cppreopts from ${mountpoint}"
# For each odex and vdex file do the copy task
# NOTE: this implementation will break in any path with spaces to favor
# background copy tasks
for file in $(find ${mountpoint} -type f -name "*.odex" -o -type f -name "*.vdex" -o -type f -name "*.art"); do
real_name=${file/${mountpoint}/}
dest_name=$(preopt2cachename ${real_name})
if ! test $? -eq 0 ; then
log -p i -t cppreopts "Unable to figure out destination for ${file}"
continue
fi
# Copy files in background to speed things up
do_copy ${file} ${dest_name} &
done
# Wait for jobs to finish
wait
exit 0
else
log -p e -t cppreopts "Usage: cppreopts <preopts-mount-point>"
exit 1
fi
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