[PATCH v7 2/6] btrfs: disable verity on encrypted inodes

[Daniel Vacek <neelx@suse.com>]

From: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>

Right now there isn't a way to encrypt things that aren't either
filenames in directories or data on blocks on disk with extent
encryption, so for now, disable verity usage with encryption on btrfs.

fscrypt with fsverity should be possible and it can be implemented
in the future.

Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Daniel Vacek <neelx.g@gmail.com>
---
 fs/btrfs/verity.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/btrfs/verity.c b/fs/btrfs/verity.c
index 16f5580cba55..06dfcb461f53 100644
--- a/fs/btrfs/verity.c
+++ b/fs/btrfs/verity.c
@@ -578,6 +578,9 @@ static int btrfs_begin_enable_verity(struct file *filp)
 
 	btrfs_assert_inode_locked(inode);
 
+	if (IS_ENCRYPTED(&inode->vfs_inode))
+		return -EOPNOTSUPP;
+
 	if (test_bit(BTRFS_INODE_VERITY_IN_PROGRESS, &inode->runtime_flags))
 		return -EBUSY;
 
-- 
2.51.0