38 static int ecryptfs_acquire_free_msg_ctx(struct ecryptfs_msg_ctx **msg_ctx)  in ecryptfs_acquire_free_msg_ctx()  argument
53 		*msg_ctx = list_entry(p, struct ecryptfs_msg_ctx, node);  in ecryptfs_acquire_free_msg_ctx()
54 		if (mutex_trylock(&(*msg_ctx)->mux)) {  in ecryptfs_acquire_free_msg_ctx()
55 			(*msg_ctx)->task = current;  in ecryptfs_acquire_free_msg_ctx()
71 static void ecryptfs_msg_ctx_free_to_alloc(struct ecryptfs_msg_ctx *msg_ctx)  in ecryptfs_msg_ctx_free_to_alloc()  argument
73 	list_move(&msg_ctx->node, &ecryptfs_msg_ctx_alloc_list);  in ecryptfs_msg_ctx_free_to_alloc()
74 	msg_ctx->state = ECRYPTFS_MSG_CTX_STATE_PENDING;  in ecryptfs_msg_ctx_free_to_alloc()
75 	msg_ctx->counter = ++ecryptfs_msg_counter;  in ecryptfs_msg_ctx_free_to_alloc()
84 void ecryptfs_msg_ctx_alloc_to_free(struct ecryptfs_msg_ctx *msg_ctx)  in ecryptfs_msg_ctx_alloc_to_free()  argument
86 	list_move(&(msg_ctx->node), &ecryptfs_msg_ctx_free_list);  in ecryptfs_msg_ctx_alloc_to_free()
87 	kfree(msg_ctx->msg);  in ecryptfs_msg_ctx_alloc_to_free()
88 	msg_ctx->msg = NULL;  in ecryptfs_msg_ctx_alloc_to_free()
89 	msg_ctx->state = ECRYPTFS_MSG_CTX_STATE_FREE;  in ecryptfs_msg_ctx_alloc_to_free()
158 	struct ecryptfs_msg_ctx *msg_ctx, *msg_ctx_tmp;  in ecryptfs_exorcise_daemon()  local
168 	list_for_each_entry_safe(msg_ctx, msg_ctx_tmp,  in ecryptfs_exorcise_daemon()
170 		list_del(&msg_ctx->daemon_out_list);  in ecryptfs_exorcise_daemon()
174 		ecryptfs_msg_ctx_alloc_to_free(msg_ctx);  in ecryptfs_exorcise_daemon()
208 	struct ecryptfs_msg_ctx *msg_ctx;  in ecryptfs_process_response()  local
220 	msg_ctx = &ecryptfs_msg_ctx_arr[msg->index];  in ecryptfs_process_response()
221 	mutex_lock(&msg_ctx->mux);  in ecryptfs_process_response()
222 	if (msg_ctx->state != ECRYPTFS_MSG_CTX_STATE_PENDING) {  in ecryptfs_process_response()
227 	} else if (msg_ctx->counter != seq) {  in ecryptfs_process_response()
231 		       msg_ctx->counter, seq);  in ecryptfs_process_response()
235 	msg_ctx->msg = kmemdup(msg, msg_size, GFP_KERNEL);  in ecryptfs_process_response()
236 	if (!msg_ctx->msg) {  in ecryptfs_process_response()
240 	msg_ctx->state = ECRYPTFS_MSG_CTX_STATE_DONE;  in ecryptfs_process_response()
241 	wake_up_process(msg_ctx->task);  in ecryptfs_process_response()
244 	mutex_unlock(&msg_ctx->mux);  in ecryptfs_process_response()
261 			     struct ecryptfs_msg_ctx **msg_ctx)  in ecryptfs_send_message_locked()  argument
272 	rc = ecryptfs_acquire_free_msg_ctx(msg_ctx);  in ecryptfs_send_message_locked()
279 	ecryptfs_msg_ctx_free_to_alloc(*msg_ctx);  in ecryptfs_send_message_locked()
280 	mutex_unlock(&(*msg_ctx)->mux);  in ecryptfs_send_message_locked()
282 	rc = ecryptfs_send_miscdev(data, data_len, *msg_ctx, msg_type, 0,  in ecryptfs_send_message_locked()
302 			  struct ecryptfs_msg_ctx **msg_ctx)  in ecryptfs_send_message()  argument
308 					  msg_ctx);  in ecryptfs_send_message()
324 int ecryptfs_wait_for_response(struct ecryptfs_msg_ctx *msg_ctx,  in ecryptfs_wait_for_response()  argument
333 	mutex_lock(&msg_ctx->mux);  in ecryptfs_wait_for_response()
334 	if (msg_ctx->state != ECRYPTFS_MSG_CTX_STATE_DONE) {  in ecryptfs_wait_for_response()
336 			mutex_unlock(&msg_ctx->mux);  in ecryptfs_wait_for_response()
342 		*msg = msg_ctx->msg;  in ecryptfs_wait_for_response()
343 		msg_ctx->msg = NULL;  in ecryptfs_wait_for_response()
345 	ecryptfs_msg_ctx_alloc_to_free(msg_ctx);  in ecryptfs_wait_for_response()
346 	mutex_unlock(&msg_ctx->mux);  in ecryptfs_wait_for_response()