fscrypt aosp doc: https://source.android.com/security/encryption/file-based
kernel fscrypt doc: https://www.kernel.org/doc/html/v4.18/filesystems/fscrypt.html
This commit implements the ability for TWRP to use fscrypt to decrypt
files on the fscrypt implementation. It has been implemented mostly
in a new successor library to e4crypt called libtwrpfscrypt. Most of the
code was ported from AOSP vold.
Notable updates include:
- updated policy storage by libtar
- lookup of fbe policies by libtwrpfscrypt
- threaded keystore operations
Big thanks to Dees_Troy for the initial trailblazing
of encryption in TWRP.
Change-Id: I69cd2eba3693a9914e00213d4943229635d0cdae
This allows flame to boot TWRP. Still will need to work on
super partition for vendor and system access.
The plan will be to cherry-pick any updates to android-9.0
through gerrit.twrp.me to this branch as a WIP.
Support for backing up and restoring user.default, user.inode_cache, and
user.inode_code_cache xattrs introduced in Android 7.x
Change-Id: I6e0aa7fc9cd30ed004ef28ebb58d60a82e518123
* Using RedHat's "RHT.security.selinux=" tag in extended
tar header (type 'x')
Signed-off-by: Vojtech Bocek <vbocek@gmail.com>
Change-Id: I102e492e4fa5b8a08fae4d34eb36386862509b4d
