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fscrypt: drop empty name check from fname_decrypt()

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fname_decrypt() is validating that the encrypted filename is nonempty.
However, earlier a stronger precondition was already enforced: the
encrypted filename must be at least 16 (FS_CRYPTO_BLOCK_SIZE) bytes.

Drop the redundant check for an empty filename.

Signed-off-by: Eric Biggers <[email protected]>
Signed-off-by: Theodore Ts'o <[email protected]>
This commit is contained in:
Eric Biggers 2018-04-30 15:51:43 -07:00 • committed by Theodore Ts'o
commit 0c4cdb27ca
1 changed files with 0 additions and 3 deletions
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3
fs/crypto/fname.c
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@ -97,9 +97,6 @@ static int fname_decrypt(struct inode *inode,
int res = 0;
char iv[FS_CRYPTO_BLOCK_SIZE];
if (iname->len <= 0)
return -EIO;
/* Allocate request */
req = skcipher_request_alloc(tfm, GFP_NOFS);
if (!req)