diff options
| author | Jeff Layton <jlayton@kernel.org> | 2021-01-08 15:34:38 -0500 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2022-08-03 00:54:11 +0200 |
| commit | d3e94fdc4ef476ca1edd468cc11badf2dbbb3c00 (patch) | |
| tree | a546f8826c77eb4a0ae6a26577aa8aa1883b9843 /fs/crypto/hooks.c | |
| parent | 18cc912b8a2acaf32589241fbac47192ab90db14 (diff) | |
fscrypt: export fscrypt_fname_encrypt and fscrypt_fname_encrypted_size
For ceph, we want to use our own scheme for handling filenames that are
are longer than NAME_MAX after encryption and Base64 encoding. This
allows us to have a consistent view of the encrypted filenames for
clients that don't support fscrypt and clients that do but that don't
have the key.
Currently, fs/crypto only supports encrypting filenames using
fscrypt_setup_filename, but that also handles encoding nokey names. Ceph
can't use that because it handles nokey names in a different way.
Export fscrypt_fname_encrypt. Rename fscrypt_fname_encrypted_size to
__fscrypt_fname_encrypted_size and add a new wrapper called
fscrypt_fname_encrypted_size that takes an inode argument rather than a
pointer to a fscrypt_policy union.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Acked-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/crypto/hooks.c')
| -rw-r--r-- | fs/crypto/hooks.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/crypto/hooks.c b/fs/crypto/hooks.c index af74599ae1cf..7c01025879b3 100644 --- a/fs/crypto/hooks.c +++ b/fs/crypto/hooks.c @@ -228,9 +228,9 @@ int fscrypt_prepare_symlink(struct inode *dir, const char *target, * counting it (even though it is meaningless for ciphertext) is simpler * for now since filesystems will assume it is there and subtract it. */ - if (!fscrypt_fname_encrypted_size(policy, len, - max_len - sizeof(struct fscrypt_symlink_data), - &disk_link->len)) + if (!__fscrypt_fname_encrypted_size(policy, len, + max_len - sizeof(struct fscrypt_symlink_data), + &disk_link->len)) return -ENAMETOOLONG; disk_link->len += sizeof(struct fscrypt_symlink_data); |