X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fagent-thread.c;h=0e827a4456d4c0ea9c37b54818bbcb6ba4c5e7a7;hp=6790a63c642bd78bb37484a6c6af0b1af39081c7;hb=9474416fd76b18db4642bc60b15451b87d74e5d5;hpb=16c2e854ac155702515506f6a9b4751c594c516d

diff --git a/src/bin/lttng-sessiond/agent-thread.c b/src/bin/lttng-sessiond/agent-thread.c
index 6790a63c6..0e827a445 100644
--- a/src/bin/lttng-sessiond/agent-thread.c
+++ b/src/bin/lttng-sessiond/agent-thread.c
@@ -198,6 +198,7 @@ static int handle_registration(struct lttcomm_sock *reg_sock,
 {
 	int ret;
 	pid_t pid;
+	uint32_t major_version, minor_version;
 	ssize_t size;
 	enum lttng_domain_type domain;
 	struct agent_app *app;
@@ -219,6 +220,18 @@ static int handle_registration(struct lttcomm_sock *reg_sock,
 	}
 	domain = be32toh(msg.domain);
 	pid = be32toh(msg.pid);
+	major_version = be32toh(msg.major_version);
+	minor_version = be32toh(msg.minor_version);
+
+	/* Test communication protocol version of the registring agent. */
+	if (major_version != AGENT_MAJOR_VERSION) {
+		ret = -EINVAL;
+		goto error_socket;
+	}
+	if (minor_version != AGENT_MINOR_VERSION) {
+		ret = -EINVAL;
+		goto error_socket;
+	}
 
 	DBG2("[agent-thread] New registration for pid %d domain %d on socket %d",
 			pid, domain, new_sock->fd);