122 	struct luo_session *session = kzalloc(sizeof(*session), GFP_KERNEL);  in luo_session_alloc()  local
124 	if (!session)  in luo_session_alloc()
127 	strscpy(session->name, name, sizeof(session->name));  in luo_session_alloc()
128 	INIT_LIST_HEAD(&session->file_set.files_list);  in luo_session_alloc()
129 	luo_file_set_init(&session->file_set);  in luo_session_alloc()
130 	INIT_LIST_HEAD(&session->list);  in luo_session_alloc()
131 	mutex_init(&session->mutex);  in luo_session_alloc()
133 	return session;  in luo_session_alloc()
136 static void luo_session_free(struct luo_session *session)  in luo_session_free()  argument
138 	luo_file_set_destroy(&session->file_set);  in luo_session_free()
139 	mutex_destroy(&session->mutex);  in luo_session_free()
140 	kfree(session);  in luo_session_free()
144 			      struct luo_session *session)  in luo_session_insert()  argument
166 		if (!strncmp(it->name, session->name, sizeof(it->name)))  in luo_session_insert()
169 	list_add_tail(&session->list, &sh->list);  in luo_session_insert()
176 			       struct luo_session *session)  in luo_session_remove()  argument
179 	list_del(&session->list);  in luo_session_remove()
183 static int luo_session_finish_one(struct luo_session *session)  in luo_session_finish_one()  argument
185 	guard(mutex)(&session->mutex);  in luo_session_finish_one()
186 	return luo_file_finish(&session->file_set);  in luo_session_finish_one()
189 static void luo_session_unfreeze_one(struct luo_session *session,  in luo_session_unfreeze_one()  argument
192 	guard(mutex)(&session->mutex);  in luo_session_unfreeze_one()
193 	luo_file_unfreeze(&session->file_set, &ser->file_set_ser);  in luo_session_unfreeze_one()
196 static int luo_session_freeze_one(struct luo_session *session,  in luo_session_freeze_one()  argument
199 	guard(mutex)(&session->mutex);  in luo_session_freeze_one()
200 	return luo_file_freeze(&session->file_set, &ser->file_set_ser);  in luo_session_freeze_one()
205 	struct luo_session *session = filep->private_data;  in luo_session_release()  local
209 	if (session->retrieved) {  in luo_session_release()
210 		int err = luo_session_finish_one(session);  in luo_session_release()
214 				session->name);  in luo_session_release()
219 		scoped_guard(mutex, &session->mutex)  in luo_session_release()
220 			luo_file_unpreserve_files(&session->file_set);  in luo_session_release()
224 	luo_session_remove(sh, session);  in luo_session_release()
225 	luo_session_free(session);  in luo_session_release()
230 static int luo_session_preserve_fd(struct luo_session *session,  in luo_session_preserve_fd()  argument
236 	guard(mutex)(&session->mutex);  in luo_session_preserve_fd()
237 	err = luo_preserve_file(&session->file_set, argp->token, argp->fd);  in luo_session_preserve_fd()
248 static int luo_session_retrieve_fd(struct luo_session *session,  in luo_session_retrieve_fd()  argument
259 	guard(mutex)(&session->mutex);  in luo_session_retrieve_fd()
260 	err = luo_retrieve_file(&session->file_set, argp->token, &file);  in luo_session_retrieve_fd()
280 static int luo_session_finish(struct luo_session *session,  in luo_session_finish()  argument
284 	int err = luo_session_finish_one(session);  in luo_session_finish()
302 	int (*execute)(struct luo_session *session, struct luo_ucmd *ucmd);
327 	struct luo_session *session = filep->private_data;  in luo_session_ioctl()  local
357 	return op->execute(session, &ucmd);  in luo_session_ioctl()
367 static int luo_session_getfile(struct luo_session *session, struct file **filep)  in luo_session_getfile()  argument
372 	lockdep_assert_held(&session->mutex);  in luo_session_getfile()
373 	snprintf(name_buf, sizeof(name_buf), "[luo_session] %s", session->name);  in luo_session_getfile()
374 	file = anon_inode_getfile(name_buf, &luo_session_fops, session, O_RDWR);  in luo_session_getfile()
385 	struct luo_session *session;  in luo_session_create()  local
388 	session = luo_session_alloc(name);  in luo_session_create()
389 	if (IS_ERR(session))  in luo_session_create()
390 		return PTR_ERR(session);  in luo_session_create()
392 	err = luo_session_insert(&luo_session_global.outgoing, session);  in luo_session_create()
396 	scoped_guard(mutex, &session->mutex)  in luo_session_create()
397 		err = luo_session_getfile(session, filep);  in luo_session_create()
404 	luo_session_remove(&luo_session_global.outgoing, session);  in luo_session_create()
406 	luo_session_free(session);  in luo_session_create()
414 	struct luo_session *session = NULL;  in luo_session_retrieve()  local
421 				session = it;  in luo_session_retrieve()
427 	if (!session)  in luo_session_retrieve()
430 	guard(mutex)(&session->mutex);  in luo_session_retrieve()
431 	if (session->retrieved)  in luo_session_retrieve()
434 	err = luo_session_getfile(session, filep);  in luo_session_retrieve()
436 		session->retrieved = true;  in luo_session_retrieve()
543 		struct luo_session *session;  in luo_session_deserialize()  local
545 		session = luo_session_alloc(sh->ser[i].name);  in luo_session_deserialize()
546 		if (IS_ERR(session)) {  in luo_session_deserialize()
548 				sh->ser[i].name, session);  in luo_session_deserialize()
549 			return PTR_ERR(session);  in luo_session_deserialize()
552 		err = luo_session_insert(sh, session);  in luo_session_deserialize()
555 				session->name, ERR_PTR(err));  in luo_session_deserialize()
556 			luo_session_free(session);  in luo_session_deserialize()
560 		scoped_guard(mutex, &session->mutex) {  in luo_session_deserialize()
561 			luo_file_deserialize(&session->file_set,  in luo_session_deserialize()
576 	struct luo_session *session;  in luo_session_serialize()  local
581 	list_for_each_entry(session, &sh->list, list) {  in luo_session_serialize()
582 		err = luo_session_freeze_one(session, &sh->ser[i]);  in luo_session_serialize()
586 		strscpy(sh->ser[i].name, session->name,  in luo_session_serialize()
595 	list_for_each_entry_continue_reverse(session, &sh->list, list) {  in luo_session_serialize()
597 		luo_session_unfreeze_one(session, &sh->ser[i]);  in luo_session_serialize()