104 static int big_key_crypt(enum big_key_op op, struct big_key_buf *buf, size_t datalen, u8 *key)  in big_key_crypt()  argument
121 	aead_request_set_crypt(aead_req, buf->sg, buf->sg, datalen, zero_nonce);  in big_key_crypt()
211 	size_t datalen = prep->datalen, enclen = datalen + ENC_AUTHTAG_SIZE;  in big_key_preparse()  local
214 	if (datalen <= 0 || datalen > 1024 * 1024 || !prep->data)  in big_key_preparse()
220 	prep->payload.data[big_key_len] = (void *)(unsigned long)datalen;  in big_key_preparse()
222 	if (datalen > BIG_KEY_FILE_THRESHOLD) {  in big_key_preparse()
233 		memcpy(buf->virt, prep->data, datalen);  in big_key_preparse()
246 		ret = big_key_crypt(BIG_KEY_ENC, buf, datalen, enckey);  in big_key_preparse()
275 		void *data = kmalloc(datalen, GFP_KERNEL);  in big_key_preparse()
281 		memcpy(data, prep->data, prep->datalen);  in big_key_preparse()
299 	if (prep->datalen > BIG_KEY_FILE_THRESHOLD) {  in big_key_free_preparse()
327 	size_t datalen = (size_t)key->payload.data[big_key_len];  in big_key_destroy()  local
329 	if (datalen > BIG_KEY_FILE_THRESHOLD) {  in big_key_destroy()
345 	size_t datalen = (size_t)key->payload.data[big_key_len];  in big_key_describe()  local
351 			   datalen,  in big_key_describe()
352 			   datalen > BIG_KEY_FILE_THRESHOLD ? "file" : "buff");  in big_key_describe()
361 	size_t datalen = (size_t)key->payload.data[big_key_len];  in big_key_read()  local
364 	if (!buffer || buflen < datalen)  in big_key_read()
365 		return datalen;  in big_key_read()
367 	if (datalen > BIG_KEY_FILE_THRESHOLD) {  in big_key_read()
372 		size_t enclen = datalen + ENC_AUTHTAG_SIZE;  in big_key_read()
396 		ret = datalen;  in big_key_read()
399 		if (copy_to_user(buffer, buf->virt, datalen) != 0)  in big_key_read()
407 		ret = datalen;  in big_key_read()
409 				 datalen) != 0)  in big_key_read()