diff options
| author | Eric Biggers <ebiggers@google.com> | 2022-04-04 18:09:14 -0700 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2022-04-13 15:03:09 -0700 |
| commit | 63cec1389e116ae0e2a15e612a5b49651e04be3f (patch) | |
| tree | c1d31f842262e5de906e5845f3c2bb15736a25ad /fs/ubifs/ubifs.h | |
| parent | ce522ba9ef7e2d9fb22a39eb3371c0c64e2a433e (diff) | |
fscrypt: split up FS_CRYPTO_BLOCK_SIZE
FS_CRYPTO_BLOCK_SIZE is neither the filesystem block size nor the
granularity of encryption. Rather, it defines two logically separate
constraints that both arise from the block size of the AES cipher:
- The alignment required for the lengths of file contents blocks
- The minimum input/output length for the filenames encryption modes
Since there are way too many things called the "block size", and the
connection with the AES block size is not easily understood, split
FS_CRYPTO_BLOCK_SIZE into two constants FSCRYPT_CONTENTS_ALIGNMENT and
FSCRYPT_FNAME_MIN_MSG_LEN that more clearly describe what they are.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20220405010914.18519-1-ebiggers@kernel.org
Diffstat (limited to 'fs/ubifs/ubifs.h')
| -rw-r--r-- | fs/ubifs/ubifs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 008fa46ef61e..7d6d2f152e03 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -132,7 +132,7 @@ #define WORST_COMPR_FACTOR 2 #ifdef CONFIG_FS_ENCRYPTION -#define UBIFS_CIPHER_BLOCK_SIZE FS_CRYPTO_BLOCK_SIZE +#define UBIFS_CIPHER_BLOCK_SIZE FSCRYPT_CONTENTS_ALIGNMENT #else #define UBIFS_CIPHER_BLOCK_SIZE 0 #endif |