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authorEric Biggers <ebiggers@google.com>2018-04-30 15:51:42 -0700
committerTheodore Ts'o <tytso@mit.edu>2018-05-20 16:21:02 -0400
commit54632f02d0cc4e47e20d0d742bf162021801fa9a (patch)
treecad33d798d5bbe81893afa35a995fa88eda7a6a6 /fs/crypto
parent17bfde6097bd5c6b8eb7474f8f75a4b95d091558 (diff)
downloadlinux-54632f02d0cc4e47e20d0d742bf162021801fa9a.tar.bz2
fscrypt: drop max_namelen check from fname_decrypt()
fname_decrypt() returns an error if the input filename is longer than the inode's ->max_namelen() as given by the filesystem. But, this doesn't actually make sense because the filesystem provided the input filename in the first place, where it was subject to the filesystem's limits. And fname_decrypt() has no internal limit itself. Thus, remove this unnecessary check. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/crypto')
-rw-r--r--fs/crypto/fname.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/crypto/fname.c b/fs/crypto/fname.c
index 8088a606c0aa..cc9590b5f371 100644
--- a/fs/crypto/fname.c
+++ b/fs/crypto/fname.c
@@ -93,14 +93,11 @@ static int fname_decrypt(struct inode *inode,
struct skcipher_request *req = NULL;
DECLARE_CRYPTO_WAIT(wait);
struct scatterlist src_sg, dst_sg;
- struct fscrypt_info *ci = inode->i_crypt_info;
- struct crypto_skcipher *tfm = ci->ci_ctfm;
+ struct crypto_skcipher *tfm = inode->i_crypt_info->ci_ctfm;
int res = 0;
char iv[FS_CRYPTO_BLOCK_SIZE];
- unsigned lim;
- lim = inode->i_sb->s_cop->max_namelen(inode);
- if (iname->len <= 0 || iname->len > lim)
+ if (iname->len <= 0)
return -EIO;
/* Allocate request */