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#!/system/bin/sh
#
# Setup /data/data based on whether the phone is encrypted or not
# and migrate the data to the correct location on en/decryption
# Encrypted => leave on /data/data (/datadata cannot be encrypted)
# Unencrypted => symlink to /datadata for performance
PATH=/system/bin/:/system/xbin/
# There are 4 states which this script can be called from.
# They can be detected using vold.decrypt and ro.crypto.state props
CRYPTO_STATE="`getprop ro.crypto.state`"
VOLD_DECRYPT="`getprop vold.decrypt`"
if test "$CRYPTO_STATE" = "unencrypted" ; then
if test "$VOLD_DECRYPT" = "" ; then
# Normal unencrypted boot
rm -r /data/data
ln -s /datadata /data/data
fi
# else: Encrypting, do nothing
else
if test "$VOLD_DECRYPT" = "trigger_post_fs_data" ; then
# Encrypted boot (after decryption)
# Migrate data from /datadata to /data/data
if test -h /data/data ; then
rm /data/data
mkdir /data/data
chown system.system /data/data
chmod 0771 /data/data
cp -a /datadata/* /data/data/
rm -r /data/data/lost+found
busybox umount /datadata
erase_image datadata
busybox mount /datadata
fi
fi
# else: Encrypted boot (before decryption), do nothing
fi
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