1 #!/system/bin/sh 2 # 3 # Copyright (C) 2016 The Android Open Source Project 4 # 5 # Licensed under the Apache License, Version 2.0 (the "License"); 6 # you may not use this file except in compliance with the License. 7 # You may obtain a copy of the License at 8 # 9 # http://www.apache.org/licenses/LICENSE-2.0 10 # 11 # Unless required by applicable law or agreed to in writing, software 12 # distributed under the License is distributed on an "AS IS" BASIS, 13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 # See the License for the specific language governing permissions and 15 # limitations under the License. 16 17 # create files with 644 (global read) permissions. 18 umask 022 19 20 # Helper function to copy files 21 function do_copy() { 22 source_file=$1 23 dest_name=$2 24 # Move to a temporary file so we can do a rename and have the preopted file 25 # appear atomically in the filesystem. 26 temp_dest_name=${dest_name}.tmp 27 if ! cp ${source_file} ${temp_dest_name} ; then 28 log -p w -t cppreopts "Unable to copy file ${source_file} to ${temp_dest_name}!" 29 else 30 log -p i -t cppreopts "Copied file from ${source_file} to ${temp_dest_name}" 31 sync 32 if ! mv ${temp_dest_name} ${dest_name} ; then 33 log -p w -t cppreopts "Unable to rename temporary file from ${temp_dest_name} to ${dest_name}" 34 rm ${temp_dest_name} || log -p w -t cppreopts "Unable to remove temporary file ${temp_dest_name}" 35 else 36 log -p i -t cppreopts "Renamed temporary file from ${temp_dest_name} to ${dest_name}" 37 fi 38 fi 39 } 40 41 if [ $# -eq 1 ]; then 42 # Where the system_b is mounted that contains the preopt'd files 43 mountpoint=$1 44 45 if ! test -f ${mountpoint}/system-other-odex-marker ; then 46 log -p i -t cppreopts "system_other partition does not appear to have been built to contain preopted files." 47 exit 1 48 fi 49 50 log -p i -t cppreopts "cppreopts from ${mountpoint}" 51 # For each odex and vdex file do the copy task 52 # NOTE: this implementation will break in any path with spaces to favor 53 # background copy tasks 54 for file in $(find ${mountpoint} -type f -name "*.odex" -o -type f -name "*.vdex" -o -type f -name "*.art"); do 55 real_name=${file/${mountpoint}/\/system} 56 dest_name=$(preopt2cachename ${real_name}) 57 if ! test $? -eq 0 ; then 58 log -p i -t cppreopts "Unable to figure out destination for ${file}" 59 continue 60 fi 61 # Copy files in background to speed things up 62 do_copy ${file} ${dest_name} & 63 done 64 # Wait for jobs to finish 65 wait 66 exit 0 67 else 68 log -p e -t cppreopts "Usage: cppreopts <preopts-mount-point>" 69 exit 1 70 fi 71
