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| author |   Eric Biggers <ebiggers@google.com> | 2017-04-24 10:00:10 -0700 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2017-05-04 11:44:37 -0400 |
| commit | 17159420a6c18bb3515ff85598b5ccf1a572763d (patch) | |
| tree | 562afc39b20e061cbdfaaf6e2db7854da95fbb45 /include/linux/fscrypt_notsupp.h | |
| parent | fscrypt: avoid collisions when presenting long encrypted filenames (diff) | |
| download | linux-dev-17159420a6c18bb3515ff85598b5ccf1a572763d.tar.xz linux-dev-17159420a6c18bb3515ff85598b5ccf1a572763d.zip | |
fscrypt: introduce helper function for filename matching
Introduce a helper function fscrypt_match_name() which tests whether a
fscrypt_name matches a directory entry. Also clean up the magic numbers
and document things properly.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'include/linux/fscrypt_notsupp.h')
| -rw-r--r-- | include/linux/fscrypt_notsupp.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/fscrypt_notsupp.h b/include/linux/fscrypt_notsupp.h index 3511ca798804..ec406aed2f2f 100644 --- a/include/linux/fscrypt_notsupp.h +++ b/include/linux/fscrypt_notsupp.h @@ -147,6 +147,15 @@ static inline int fscrypt_fname_usr_to_disk(struct inode *inode, return -EOPNOTSUPP; } +static inline bool fscrypt_match_name(const struct fscrypt_name *fname, + const u8 *de_name, u32 de_name_len) +{ + /* Encryption support disabled; use standard comparison */ + if (de_name_len != fname->disk_name.len) + return false; + return !memcmp(de_name, fname->disk_name.name, fname->disk_name.len); +} + /* bio.c */ static inline void fscrypt_decrypt_bio_pages(struct fscrypt_ctx *ctx, struct bio *bio) |