fstab: add support for metadata_encryption flag
Change-Id: Ic1f12f280e9e99cfe3587e35b88a1f2e9d97a1b2
(cherry picked from commit 32bcdcd32eaa69a06786ce464226b3d53c4c3d1c)
diff --git a/partition.cpp b/partition.cpp
index 1d68c24..d67344a 100755
--- a/partition.cpp
+++ b/partition.cpp
@@ -133,6 +133,7 @@
TWFLAG_DISPLAY,
TWFLAG_ENCRYPTABLE,
TWFLAG_FILEENCRYPTION,
+ TWFLAG_METADATA_ENCRYPTION,
TWFLAG_FLASHIMG,
TWFLAG_FORCEENCRYPT,
TWFLAG_FSFLAGS,
@@ -180,6 +181,7 @@
{ "display=", TWFLAG_DISPLAY },
{ "encryptable=", TWFLAG_ENCRYPTABLE },
{ "fileencryption=", TWFLAG_FILEENCRYPTION },
+ { "metadata_encryption=", TWFLAG_METADATA_ENCRYPTION },
{ "flashimg", TWFLAG_FLASHIMG },
{ "forceencrypt=", TWFLAG_FORCEENCRYPT },
{ "fsflags=", TWFLAG_FSFLAGS },
@@ -936,6 +938,26 @@
LOGINFO("FBE contents '%s', filenames '%s'\n", FBE_contents.c_str(), FBE_filenames.c_str());
}
break;
+ case TWFLAG_METADATA_ENCRYPTION:
+ // This flag isn't used by TWRP but is needed for FBEv2 metadata decryption
+ // metadata_encryption=aes-256-xts:wrappedkey_v0
+ {
+ std::string META = str;
+ size_t colon_loc = META.find(":");
+ if (colon_loc == std::string::npos) {
+ property_set("metadata.contents", META.c_str());
+ property_set("metadata.filenames", "");
+ LOGINFO("Metadata contents '%s', filenames ''\n", META.c_str());
+ break;
+ }
+ std::string META_contents, META_filenames;
+ META_contents = META.substr(0, colon_loc);
+ META_filenames = META.substr(colon_loc + 1);
+ property_set("metadata.contents", META_contents.c_str());
+ property_set("metadata.filenames", META_filenames.c_str());
+ LOGINFO("Metadata contents '%s', filenames '%s'\n", META_contents.c_str(), META_filenames.c_str());
+ }
+ break;
case TWFLAG_WRAPPEDKEY:
// no more processing needed. leaving it here in case we want to do something in the future
break;