X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Flib%2Flttng-ctl%2Flttng-ctl.c;h=91d6109e5383b77f8013d67aad18b374d4e131ba;hp=784597e20ef3188373dc898fe9a45976381ccbbf;hb=fbc9f37df245d544a7705ba576297df791220b44;hpb=242388e491e4219f967ee424d7bf02035a313e6f

diff --git a/src/lib/lttng-ctl/lttng-ctl.c b/src/lib/lttng-ctl/lttng-ctl.c
index 784597e20..91d6109e5 100644
--- a/src/lib/lttng-ctl/lttng-ctl.c
+++ b/src/lib/lttng-ctl/lttng-ctl.c
@@ -211,6 +211,8 @@ static int recv_data_sessiond(void *buf, size_t len)
 {
 	int ret;
 
+	assert(len > 0);
+
 	if (!connected) {
 		ret = -LTTNG_ERR_NO_SESSIOND;
 		goto end;
@@ -219,6 +221,8 @@ static int recv_data_sessiond(void *buf, size_t len)
 	ret = lttcomm_recv_unix_sock(sessiond_socket, buf, len);
 	if (ret < 0) {
 		ret = -LTTNG_ERR_FATAL;
+	} else if (ret == 0) {
+		ret = -LTTNG_ERR_NO_SESSIOND;
 	}
 
 end:
@@ -2243,7 +2247,7 @@ int lttng_list_events(struct lttng_handle *handle,
 
 	cmd_header_view = lttng_buffer_view_from_dynamic_buffer(
 		&payload.buffer, 0, sizeof(*cmd_header));
-	if (!cmd_header_view.data) {
+	if (!lttng_buffer_view_is_valid(&cmd_header_view)) {
 		ret = -LTTNG_ERR_INVALID_PROTOCOL;
 		goto end;
 	}
@@ -2310,6 +2314,11 @@ int lttng_list_events(struct lttng_handle *handle,
 								payload_view.buffer.data,
 						ext_comm->userspace_probe_location_len);
 
+				if (!lttng_payload_view_is_valid(&probe_location_view)) {
+					ret = -LTTNG_ERR_PROBE_LOCATION_INVAL;
+					goto end;
+				}
+
 				/*
 				 * Create a temporary userspace probe location
 				 * to determine the size needed by a "flattened"
@@ -2449,6 +2458,11 @@ int lttng_list_events(struct lttng_handle *handle,
 								payload_copy_view.buffer.data,
 						ext_comm->userspace_probe_location_len);
 
+				if (!lttng_payload_view_is_valid(&probe_location_view)) {
+					ret = -LTTNG_ERR_PROBE_LOCATION_INVAL;
+					goto free_dynamic_buffer;
+				}
+
 				ret = lttng_userspace_probe_location_create_from_payload(
 						&probe_location_view,
 						&probe_location);
@@ -3159,6 +3173,52 @@ end:
 	return ret;
 }
 
+/*
+ * Ask the session daemon for all registered triggers for the current user.
+ *
+ * Allocates and return an lttng_triggers set.
+ * On error, returns a suitable lttng_error_code.
+ */
+enum lttng_error_code lttng_list_triggers(struct lttng_triggers **triggers)
+{
+	int ret;
+	enum lttng_error_code ret_code = LTTNG_OK;
+	struct lttcomm_session_msg lsm = { .cmd_type = LTTNG_LIST_TRIGGERS };
+	struct lttng_triggers *local_triggers = NULL;
+	struct lttng_payload reply;
+	struct lttng_payload_view lsm_view =
+			lttng_payload_view_init_from_buffer(
+				(const char *) &lsm, 0, sizeof(lsm));
+
+	lttng_payload_init(&reply);
+
+	ret = lttng_ctl_ask_sessiond_payload(&lsm_view, &reply);
+	if (ret < 0) {
+		ret_code = (enum lttng_error_code) -ret;
+		goto end;
+	}
+
+	{
+		struct lttng_payload_view reply_view =
+				lttng_payload_view_from_payload(
+						&reply, 0, reply.buffer.size);
+
+		ret = lttng_triggers_create_from_payload(
+				&reply_view, &local_triggers);
+		if (ret < 0) {
+			ret_code = LTTNG_ERR_FATAL;
+			goto end;
+		}
+	}
+
+	*triggers = local_triggers;
+	local_triggers = NULL;
+end:
+	lttng_payload_reset(&reply);
+	lttng_triggers_destroy(local_triggers);
+	return ret_code;
+}
+
 /*
  * lib constructor.
  */