ANDROID: e2fsck: Handle casefolded encryption
Adds support for EXT2_HASH_SIPHASH, and reading the hash from disk in
that case. We cannot compute the siphash without the key, so we must
not modify the names of any encrypted and casefolded directories,
which limits some recovery options, and we must assume the hashes
stored in dirents are correct.
This is in preparation for upcoming kernel support for encryption and
casefolding at the same time.
Bug: 138322712
Test: Create fs with casefold and encryption enabled via mke2fs and
tune2fs, run fsck after creating casefolded + encrypted folder
Change-Id: Icca32d7d9dd3c7f52da03d60e4d89273cbec0a7d
8 files changed
