X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fsessiond-comm%2Fsessiond-comm.h;h=63d4eda078866b17342089aae7382e5aebf243a2;hp=6350fd1e32280424c17b97fa4d7bcc3457d3e346;hb=331744e34f56a5aec69b05d356d6901e67926acc;hpb=31fa4745f181bd1bdbceb89fbe27e130f5b4e2b9

diff --git a/src/common/sessiond-comm/sessiond-comm.h b/src/common/sessiond-comm/sessiond-comm.h
index 6350fd1e3..63d4eda07 100644
--- a/src/common/sessiond-comm/sessiond-comm.h
+++ b/src/common/sessiond-comm/sessiond-comm.h
@@ -138,6 +138,24 @@ enum lttcomm_sock_domain {
 	LTTCOMM_INET6     = 1,
 };
 
+enum lttcomm_metadata_command {
+	LTTCOMM_METADATA_REQUEST = 1,
+};
+
+/*
+ * Commands sent from the consumerd to the sessiond to request if new metadata
+ * is available. This message is used to find the per UID _or_ per PID registry
+ * for the channel key. For per UID lookup, the triplet
+ * bits_per_long/uid/session_id is used. On lookup failure, we search for the
+ * per PID registry indexed by session id ignoring the other values.
+ */
+struct lttcomm_metadata_request_msg {
+	unsigned int session_id; /* Tracing session id */
+	uint32_t bits_per_long; /* Consumer ABI */
+	uint32_t uid;
+	uint64_t key; /* Metadata channel key. */
+} LTTNG_PACKED;
+
 struct lttcomm_sockaddr {
 	enum lttcomm_sock_domain type;
 	union {