9dde3d63e8
* Due to both following commits, backuptool went permissive
and lineage properties got lost from the system on devices
that do not have BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED
"backuptool: Take into account new location for system default props"
Change-Id: I62046447876c2198a0c4f88a4f36f4723d417617
"lineage: Move to Google's method of defining system default props"
Change-Id: I6cb0e28a7599b010b389cc541015a37010a00f4b
* Once the properties issue is properly resolved in the sources,
a period of time is required for "most" of the users to upgrade
their system with fixed lineage properties before we break addons
by repairing the backuptool script globally
Change-Id: Iea8865ea9bb05eed56a8a0a7b95e3f04b01c4bae
117 lines
2.5 KiB
Bash
Executable File
117 lines
2.5 KiB
Bash
Executable File
#!/sbin/sh
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#
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# Backup and restore addon /system files
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#
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export C=/tmp/backupdir
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export S=/system
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export V=15.1
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# Scripts in /system/addon.d expect to find backuptool.functions in /tmp
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cp -f /tmp/install/bin/backuptool.functions /tmp
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# Preserve /system/addon.d in /tmp/addon.d
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preserve_addon_d() {
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if [ -d /system/addon.d/ ]; then
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mkdir -p /tmp/addon.d/
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cp -a /system/addon.d/* /tmp/addon.d/
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chmod 755 /tmp/addon.d/*.sh
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fi
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}
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# Restore /system/addon.d from /tmp/addon.d
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restore_addon_d() {
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if [ -d /tmp/addon.d/ ]; then
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mkdir -p /system/addon.d/
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cp -a /tmp/addon.d/* /system/addon.d/
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rm -rf /tmp/addon.d/
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fi
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}
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# Proceed only if /system is the expected major and minor version
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check_prereq() {
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# If there is no build.prop file the partition is probably empty.
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if [ ! -r /system/build.prop ]; then
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return 0
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fi
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# if [ ! grep -q "^ro.lineage.version=$V.*" /system/etc/prop.default /system/build.prop ]; then
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# echo "Not backing up files from incompatible version: $V"
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# return 0
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# fi
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return 1
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}
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check_blacklist() {
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if [ -f /system/addon.d/blacklist -a -d /$1/addon.d/ ]; then
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## Discard any known bad backup scripts
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cd /$1/addon.d/
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for f in *sh; do
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[ -f $f ] || continue
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s=$(md5sum $f | cut -c-32)
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grep -q $s /system/addon.d/blacklist && rm -f $f
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done
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fi
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}
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check_whitelist() {
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found=0
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if [ -f /system/addon.d/whitelist ];then
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## forcefully keep any version-independent stuff
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cd /$1/addon.d/
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for f in *sh; do
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s=$(md5sum $f | cut -c-32)
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grep -q $s /system/addon.d/whitelist
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if [ $? -eq 0 ]; then
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found=1
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else
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rm -f $f
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fi
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done
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fi
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return $found
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}
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# Execute /system/addon.d/*.sh scripts with $1 parameter
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run_stage() {
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if [ -d /tmp/addon.d/ ]; then
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for script in $(find /tmp/addon.d/ -name '*.sh' |sort -n); do
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$script $1
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done
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fi
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}
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case "$1" in
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backup)
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mkdir -p $C
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if check_prereq; then
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if check_whitelist system; then
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exit 127
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fi
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fi
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check_blacklist system
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preserve_addon_d
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run_stage pre-backup
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run_stage backup
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run_stage post-backup
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;;
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restore)
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if check_prereq; then
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if check_whitelist tmp; then
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exit 127
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fi
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fi
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check_blacklist tmp
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run_stage pre-restore
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run_stage restore
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run_stage post-restore
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restore_addon_d
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rm -rf $C
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sync
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;;
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*)
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echo "Usage: $0 {backup|restore}"
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exit 1
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esac
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exit 0
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