[RFC PATCH v3 7/9] common/verity: explicitly don't allow btrfs encryption

[Sweet Tea Dorminy <sweettea-kernel@dorminy.me>]

Currently btrfs encryption doesn't support verity, but it is planned to
one day. To be explicit about the lack of support, add a custom error
message to the combination.

Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
---
 common/verity | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/verity b/common/verity
index e0937717..5e651316 100644
--- a/common/verity
+++ b/common/verity
@@ -224,6 +224,10 @@ _scratch_mkfs_encrypted_verity()
 		# features with -O.  Instead -O must be supplied multiple times.
 		_scratch_mkfs -O encrypt -O verity
 		;;
+	btrfs)
+		# currently verity + encryption is not supported
+		_notrun "btrfs doesn't currently support verity + encryption"
+		;;
 	*)
 		_notrun "$FSTYP not supported in _scratch_mkfs_encrypted_verity"
 		;;
-- 
2.41.0