X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Frelayd%2Frelayd.c;h=7f0ea74e94085b99873049a736941015e85fda5c;hp=60b7ee84970d89dfa1125c5b46a62387dff0b1d6;hb=a7c918ad2aefd0c540b0aa4aacace40941d94643;hpb=234cd6367843a2106a4cb10f8fb99443208516df

diff --git a/src/common/relayd/relayd.c b/src/common/relayd/relayd.c
index 60b7ee849..7f0ea74e9 100644
--- a/src/common/relayd/relayd.c
+++ b/src/common/relayd/relayd.c
@@ -129,16 +129,15 @@ static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock,
 	int ret;
 	struct lttcomm_relayd_create_session_2_4 msg;
 
-	if (strlen(session_name) >= sizeof(msg.session_name)) {
+	if (lttng_strncpy(msg.session_name, session_name,
+			sizeof(msg.session_name))) {
 		ret = -1;
 		goto error;
 	}
-	strncpy(msg.session_name, session_name, sizeof(msg.session_name));
-	if (strlen(hostname) >= sizeof(msg.hostname)) {
+	if (lttng_strncpy(msg.hostname, hostname, sizeof(msg.hostname))) {
 		ret = -1;
 		goto error;
 	}
-	strncpy(msg.hostname, hostname, sizeof(msg.hostname));
 	msg.live_timer = htobe32(session_live_timer);
 	msg.snapshot = htobe32(snapshot);
 
@@ -255,16 +254,16 @@ int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_nam
 	/* Compat with relayd 2.1 */
 	if (rsock->minor == 1) {
 		memset(&msg, 0, sizeof(msg));
-		if (strlen(channel_name) >= sizeof(msg.channel_name)) {
+		if (lttng_strncpy(msg.channel_name, channel_name,
+				sizeof(msg.channel_name))) {
 			ret = -1;
 			goto error;
 		}
-		strncpy(msg.channel_name, channel_name, sizeof(msg.channel_name));
-		if (strlen(pathname) >= sizeof(msg.pathname)) {
+		if (lttng_strncpy(msg.pathname, pathname,
+				sizeof(msg.pathname))) {
 			ret = -1;
 			goto error;
 		}
-		strncpy(msg.pathname, pathname, sizeof(msg.pathname));
 
 		/* Send command */
 		ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0);
@@ -274,16 +273,16 @@ int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_nam
 	} else {
 		memset(&msg_2_2, 0, sizeof(msg_2_2));
 		/* Compat with relayd 2.2+ */
-		if (strlen(channel_name) >= sizeof(msg_2_2.channel_name)) {
+		if (lttng_strncpy(msg_2_2.channel_name, channel_name,
+				sizeof(msg_2_2.channel_name))) {
 			ret = -1;
 			goto error;
 		}
-		strncpy(msg_2_2.channel_name, channel_name, sizeof(msg_2_2.channel_name));
-		if (strlen(pathname) >= sizeof(msg_2_2.pathname)) {
+		if (lttng_strncpy(msg_2_2.pathname, pathname,
+				sizeof(msg_2_2.pathname))) {
 			ret = -1;
 			goto error;
 		}
-		strncpy(msg_2_2.pathname, pathname, sizeof(msg_2_2.pathname));
 		msg_2_2.tracefile_size = htobe64(tracefile_size);
 		msg_2_2.tracefile_count = htobe64(tracefile_count);
 
@@ -882,3 +881,58 @@ int relayd_send_index(struct lttcomm_relayd_sock *rsock,
 error:
 	return ret;
 }
+
+/*
+ * Ask the relay to reset the metadata trace file (regeneration).
+ */
+int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock,
+		uint64_t stream_id, uint64_t version)
+{
+	int ret;
+	struct lttcomm_relayd_reset_metadata msg;
+	struct lttcomm_relayd_generic_reply reply;
+
+	/* Code flow error. Safety net. */
+	assert(rsock);
+
+	/* Should have been prevented by the sessiond. */
+	if (rsock->minor < 8) {
+		ERR("Metadata regeneration unsupported before 2.8");
+		ret = -1;
+		goto error;
+	}
+
+	DBG("Relayd reset metadata stream id %" PRIu64, stream_id);
+
+	memset(&msg, 0, sizeof(msg));
+	msg.stream_id = htobe64(stream_id);
+	msg.version = htobe64(version);
+
+	/* Send command */
+	ret = send_command(rsock, RELAYD_RESET_METADATA, (void *) &msg, sizeof(msg), 0);
+	if (ret < 0) {
+		goto error;
+	}
+
+	/* Receive response */
+	ret = recv_reply(rsock, (void *) &reply, sizeof(reply));
+	if (ret < 0) {
+		goto error;
+	}
+
+	reply.ret_code = be32toh(reply.ret_code);
+
+	/* Return session id or negative ret code. */
+	if (reply.ret_code != LTTNG_OK) {
+		ret = -1;
+		ERR("Relayd reset metadata replied error %d", reply.ret_code);
+	} else {
+		/* Success */
+		ret = 0;
+	}
+
+	DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id);
+
+error:
+	return ret;
+}