diff options
| author | Eric Biggers <ebiggers@google.com> | 2017-01-05 13:51:18 -0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2017-01-08 01:03:41 -0500 |
| commit | a5d431eff2e0bb22156897435aa277ddc96074f7 (patch) | |
| tree | 21fc94db3331336db3fd7bce15820907d6da5261 /fs/ext4/super.c | |
| parent | f099d616dd689d27b08dec95d0b6f1f302cf8ec4 (diff) | |
fscrypt: make fscrypt_operations.key_prefix a string
There was an unnecessary amount of complexity around requesting the
filesystem-specific key prefix. It was unclear why; perhaps it was
envisioned that different instances of the same filesystem type could
use different key prefixes, or that key prefixes could be binary.
However, neither of those things were implemented or really make sense
at all. So simplify the code by making key_prefix a const char *.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 66845a08a87a..9d15a6293124 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1100,12 +1100,6 @@ static int ext4_get_context(struct inode *inode, void *ctx, size_t len) EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, ctx, len); } -static int ext4_key_prefix(struct inode *inode, u8 **key) -{ - *key = EXT4_SB(inode->i_sb)->key_prefix; - return EXT4_SB(inode->i_sb)->key_prefix_size; -} - static int ext4_prepare_context(struct inode *inode) { return ext4_convert_inline_data(inode); @@ -1180,8 +1174,8 @@ static unsigned ext4_max_namelen(struct inode *inode) } static struct fscrypt_operations ext4_cryptops = { + .key_prefix = "ext4:", .get_context = ext4_get_context, - .key_prefix = ext4_key_prefix, .prepare_context = ext4_prepare_context, .set_context = ext4_set_context, .dummy_context = ext4_dummy_context, @@ -4218,11 +4212,6 @@ no_journal: ratelimit_state_init(&sbi->s_msg_ratelimit_state, 5 * HZ, 10); kfree(orig_data); -#ifdef CONFIG_EXT4_FS_ENCRYPTION - memcpy(sbi->key_prefix, EXT4_KEY_DESC_PREFIX, - EXT4_KEY_DESC_PREFIX_SIZE); - sbi->key_prefix_size = EXT4_KEY_DESC_PREFIX_SIZE; -#endif return 0; cantfind_ext4: |