fscrypt: introduce helper function for filename matching

[mirror_ubuntu-artful-kernel.git] / include / linux / fscrypt_notsupp.h

diff --git a/include/linux/fscrypt_notsupp.h b/include/linux/fscrypt_notsupp.h
index 3511ca7988043e75440886f0530abae2dde1f1d8..ec406aed2f2f8c3331d0002fba8a83036e75c08b 100644 (file)
--- 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)