The different encryption related options for fscrypt are too numerous to support for extent based encryption. Support for a few of these options could possibly be added, but since they're niche options simply reject them for file systems using extent based encryption.
Signed-off-by: Josef Bacik <[email protected]> --- fs/crypto/policy.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c index 4729f21e21d8..75a69f02f11d 100644 --- a/fs/crypto/policy.c +++ b/fs/crypto/policy.c @@ -209,6 +209,12 @@ static bool fscrypt_supported_v1_policy(const struct fscrypt_policy_v1 *policy, return false; } + if (inode->i_sb->s_cop->has_per_extent_encryption) { + fscrypt_warn(inode, + "v1 policies can't be used on file systems that use extent encryption"); + return false; + } + return true; } @@ -269,6 +275,12 @@ static bool fscrypt_supported_v2_policy(const struct fscrypt_policy_v2 *policy, } } + if ((inode->i_sb->s_cop->has_per_extent_encryption) && count) { + fscrypt_warn(inode, + "Encryption flags aren't supported on file systems that use extent encryption"); + return false; + } + if ((policy->flags & FSCRYPT_POLICY_FLAG_DIRECT_KEY) && !supported_direct_key_modes(inode, policy->contents_encryption_mode, policy->filenames_encryption_mode)) -- 2.41.0