replicant-vendor_replicant/prebuilt/common/bin/backuptool.sh
Ricardo Cerqueira 129989b172 backuptool: Disregard known bad backup scripts
Keep a blacklist of md5 sums for scripts known to cause issues, and
ignore them when installing new builds

Change-Id: I19a88b58194a32da5eb5fe278f2c5b9a145b57be
2012-12-19 01:16:17 +00:00

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#!/sbin/sh
#
# Backup and restore addon /system files
#
export C=/tmp/backupdir
export S=/system
export V=10.1
# Preserve /system/addon.d in /tmp/addon.d
preserve_addon_d() {
mkdir -p /tmp/addon.d/
cp -a /system/addon.d/* /tmp/addon.d/
chmod 755 /tmp/addon.d/*.sh
}
# Restore /system/addon.d in /tmp/addon.d
restore_addon_d() {
cp -a /tmp/addon.d/* /system/addon.d/
rm -rf /tmp/addon.d/
}
# Proceed only if /system is the expected major and minor version
check_prereq() {
if ( ! grep -q "^ro.cm.version=$V.*" /system/build.prop ); then
echo "Not backing up files from incompatible version: $V"
exit 127
fi
}
check_blacklist() {
if [ -f /system/addon.d/blacklist ];then
## Discard any known bad backup scripts
cd /$1/addon.d/
for f in *sh; do
s=$(md5sum $f | awk {'print $1'})
grep -q $s /system/addon.d/blacklist && rm -f $f
done
fi
}
# Execute /system/addon.d/*.sh scripts with $1 parameter
run_stage() {
for script in $(find /tmp/addon.d/ -name '*.sh' |sort -n); do
$script $1
done
}
case "$1" in
backup)
mkdir -p $C
check_prereq
check_blacklist system
preserve_addon_d
run_stage pre-backup
run_stage backup
run_stage post-backup
;;
restore)
check_prereq
check_blacklist tmp
run_stage pre-restore
run_stage restore
run_stage post-restore
restore_addon_d
rm -rf $C
sync
;;
*)
echo "Usage: $0 {backup|restore}"
exit 1
esac
exit 0