20 	if (str->len == 1 && str->name[0] == '.')  in fscrypt_is_dot_dotdot()
23 	if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')  in fscrypt_is_dot_dotdot()
51 	if (WARN_ON(olen < iname->len))  in fname_encrypt()
53 	memcpy(out, iname->name, iname->len);  in fname_encrypt()
54 	memset(out + iname->len, 0, olen - iname->len);  in fname_encrypt()
105 	if (iname->len <= 0 || iname->len > lim)  in fname_decrypt()
123 	sg_init_one(&src_sg, iname->name, iname->len);  in fname_decrypt()
124 	sg_init_one(&dst_sg, oname->name, oname->len);  in fname_decrypt()
125 	skcipher_request_set_crypt(req, &src_sg, &dst_sg, iname->len, iv);  in fname_decrypt()
134 	oname->len = strnlen(oname->name, iname->len);  in fname_decrypt()
149 static int digest_encode(const char *src, int len, char *dst)  in digest_encode()  argument
154 	while (i < len) {  in digest_encode()
169 static int digest_decode(const char *src, int len, char *dst)  in digest_decode()  argument
175 	while (i < len) {  in digest_decode()
230 	crypto_str->len = max_presented_len;  in fscrypt_fname_alloc_buffer()
271 		oname->name[iname->len - 1] = '.';  in fscrypt_fname_disk_to_usr()
272 		oname->len = iname->len;  in fscrypt_fname_disk_to_usr()
276 	if (iname->len < FS_CRYPTO_BLOCK_SIZE)  in fscrypt_fname_disk_to_usr()
282 	if (iname->len <= FSCRYPT_FNAME_MAX_UNDIGESTED_SIZE) {  in fscrypt_fname_disk_to_usr()
283 		oname->len = digest_encode(iname->name, iname->len,  in fscrypt_fname_disk_to_usr()
295 	       FSCRYPT_FNAME_DIGEST(iname->name, iname->len),  in fscrypt_fname_disk_to_usr()
298 	oname->len = 1 + digest_encode((const char *)&digested_name,  in fscrypt_fname_disk_to_usr()
339 		fname->disk_name.len = iname->len;  in fscrypt_setup_filename()
347 		if (!fscrypt_fname_encrypted_size(dir, iname->len,  in fscrypt_setup_filename()
349 						  &fname->crypto_buf.len))  in fscrypt_setup_filename()
351 		fname->crypto_buf.name = kmalloc(fname->crypto_buf.len,  in fscrypt_setup_filename()
357 				    fname->crypto_buf.len);  in fscrypt_setup_filename()
361 		fname->disk_name.len = fname->crypto_buf.len;  in fscrypt_setup_filename()
372 		if (iname->len !=  in fscrypt_setup_filename()
377 		if (iname->len >  in fscrypt_setup_filename()
390 	ret = digest_decode(iname->name + digested, iname->len - digested,  in fscrypt_setup_filename()
396 	fname->crypto_buf.len = ret;  in fscrypt_setup_filename()
404 		fname->disk_name.len = fname->crypto_buf.len;  in fscrypt_setup_filename()