Commit 067d1023 authored by Eric Biggers's avatar Eric Biggers Committed by Theodore Ts'o
Browse files

ext4: switch to using fscrypt_match_name() 



Switch ext4 directory searches to use the fscrypt_match_name() helper
function.  There should be no functional change.

Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
parent 17159420

fs/ext4/namei.c

+5 −17
Original line number Diff line number Diff line
@@ -1245,29 +1245,17 @@ static void dx_insert_block(struct dx_frame *frame, u32 hash, ext4_lblk_t block) 
static inline int ext4_match(struct ext4_filename *fname,

			     struct ext4_dir_entry_2 *de)

{

	const void *name = fname_name(fname);

	u32 len = fname_len(fname);

	struct fscrypt_name f;



	if (!de->inode)

		return 0;



	f.usr_fname = fname->usr_fname;

	f.disk_name = fname->disk_name;

#ifdef CONFIG_EXT4_FS_ENCRYPTION

	if (unlikely(!name)) {

		if (fname->usr_fname->name[0] == '_') {

			int ret;

			if (de->name_len <= 32)

				return 0;

			ret = memcmp(de->name + ((de->name_len - 17) & ~15),

				     fname->crypto_buf.name + 8, 16);

			return (ret == 0) ? 1 : 0;

		}

		name = fname->crypto_buf.name;

		len = fname->crypto_buf.len;

	}

	f.crypto_buf = fname->crypto_buf;

#endif

	if (de->name_len != len)

		return 0;

	return (memcmp(de->name, name, len) == 0) ? 1 : 0;

	return fscrypt_match_name(&f, de->name, de->name_len);

}



/*