From e75c838fab3d40b216b1053d37e0e01335550f57 Mon Sep 17 00:00:00 2001
From: Pawit Pornkitprasan <p.pawit@gmail.com>
Date: Mon, 28 Nov 2011 19:24:42 +0700
Subject: Add encryption support and cleaned up init.aries.rc for it

---
 setupdatadata.sh | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 setupdatadata.sh

(limited to 'setupdatadata.sh')

diff --git a/setupdatadata.sh b/setupdatadata.sh
new file mode 100644
index 0000000..f3c44e2
--- /dev/null
+++ b/setupdatadata.sh
@@ -0,0 +1,40 @@
+#!/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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