Unverified Commit 55fb177d authored by Amir Goldstein's avatar Amir Goldstein Committed by Christian Brauner
Browse files

fs: add helpers name_is_dot{,dot,_dotdot} 



Rename the helper is_dot_dotdot() into the name_ namespace
and add complementary helpers to check for dot and dotdot
names individually.

Signed-off-by: default avatarAmir Goldstein <amir73il@gmail.com>
Link: https://patch.msgid.link/20260128132406.23768-3-amir73il@gmail.com


Reviewed-by: default avatarEric Biggers <ebiggers@kernel.org>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 1992330d

fs/crypto/fname.c

+1 −1
Original line number Diff line number Diff line
@@ -76,7 +76,7 @@ struct fscrypt_nokey_name { 


static inline bool fscrypt_is_dot_dotdot(const struct qstr *str)

{

	return is_dot_dotdot(str->name, str->len);

	return name_is_dot_dotdot(str->name, str->len);

}



/**

fs/ecryptfs/crypto.c

+1 −1
Original line number Diff line number Diff line
@@ -1904,7 +1904,7 @@ int ecryptfs_decode_and_decrypt_filename(char **plaintext_name, 


	if ((mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES) &&

	    !(mount_crypt_stat->flags & ECRYPTFS_ENCRYPTED_VIEW_ENABLED)) {

		if (is_dot_dotdot(name, name_size)) {

		if (name_is_dot_dotdot(name, name_size)) {

			rc = ecryptfs_copy_filename(plaintext_name,

						    plaintext_name_size,

						    name, name_size);

fs/exportfs/expfs.c

+2 −1
Original line number Diff line number Diff line
@@ -253,7 +253,8 @@ static bool filldir_one(struct dir_context *ctx, const char *name, int len, 
		container_of(ctx, struct getdents_callback, ctx);



	buf->sequence++;

	if (buf->ino == ino && len <= NAME_MAX && !is_dot_dotdot(name, len)) {

	if (buf->ino == ino && len <= NAME_MAX &&

	    !name_is_dot_dotdot(name, len)) {

		memcpy(buf->name, name, len);

		buf->name[len] = '\0';

		buf->found = 1;

fs/f2fs/dir.c

+1 −1
Original line number Diff line number Diff line
@@ -67,7 +67,7 @@ int f2fs_init_casefolded_name(const struct inode *dir, 
	int len;



	if (IS_CASEFOLDED(dir) &&

	    !is_dot_dotdot(fname->usr_fname->name, fname->usr_fname->len)) {

	    !name_is_dot_dotdot(fname->usr_fname->name, fname->usr_fname->len)) {

		buf = f2fs_kmem_cache_alloc(f2fs_cf_name_slab,

					    GFP_NOFS, false, F2FS_SB(sb));

		if (!buf)

fs/f2fs/hash.c

+1 −1
Original line number Diff line number Diff line
@@ -100,7 +100,7 @@ void f2fs_hash_filename(const struct inode *dir, struct f2fs_filename *fname) 


	WARN_ON_ONCE(!name);



	if (is_dot_dotdot(name, len)) {

	if (name_is_dot_dotdot(name, len)) {

		fname->hash = 0;

		return;

	}