CUSTOM: relayd protocol: ignore reply on relayd_send_index and relayd_send_close_stream
[lttng-tools.git] / src / common / sessiond-comm / sessiond-comm.h
index 675e54c2d6adffba777234885cc89ccf106d3cfb..18347742f8dfd6882d098e945d06f44b00765fb6 100644 (file)
 #include <arpa/inet.h>
 #include <netinet/in.h>
 #include <sys/un.h>
+#include <stdbool.h>
 
 #include "inet.h"
 #include "inet6.h"
-#include "unix.h"
+#include <common/unix.h>
 
 /* Queue size of listen(2) */
 #define LTTNG_SESSIOND_COMM_MAX_LISTEN 64
@@ -56,7 +57,7 @@
 enum lttcomm_sessiond_command {
        /* Tracer command */
        LTTNG_ADD_CONTEXT                   = 0,
-       LTTNG_CALIBRATE                     = 1,
+       /* LTTNG_CALIBRATE used to be here */
        LTTNG_DISABLE_CHANNEL               = 2,
        LTTNG_DISABLE_EVENT                 = 3,
        LTTNG_LIST_SYSCALLS                 = 4,
@@ -90,10 +91,12 @@ enum lttcomm_sessiond_command {
        LTTNG_CREATE_SESSION_SNAPSHOT       = 29,
        LTTNG_CREATE_SESSION_LIVE           = 30,
        LTTNG_SAVE_SESSION                  = 31,
-       LTTNG_TRACK_PID                     = 32,
-       LTTNG_UNTRACK_PID                   = 33,
-       LTTNG_LIST_TRACKER_PIDS             = 34,
+       LTTNG_TRACK_ID                      = 32,
+       LTTNG_UNTRACK_ID                    = 33,
+       LTTNG_LIST_TRACKER_IDS              = 34,
        LTTNG_SET_SESSION_SHM_PATH          = 40,
+       LTTNG_REGENERATE_METADATA           = 41,
+       LTTNG_REGENERATE_STATEDUMP          = 42,
 };
 
 enum lttcomm_relayd_command {
@@ -115,6 +118,8 @@ enum lttcomm_relayd_command {
        RELAYD_LIST_SESSIONS                = 15,
        /* All streams of the channel have been sent to the relayd (2.4+). */
        RELAYD_STREAMS_SENT                 = 16,
+       /* Ask the relay to reset the metadata trace file (2.8+) */
+       RELAYD_RESET_METADATA               = 17,
 };
 
 /*
@@ -203,6 +208,8 @@ struct lttcomm_relayd_sock {
        struct lttcomm_sock sock;
        uint32_t major;
        uint32_t minor;
+       /* The number of bytes to ignore on the next receive. */
+       size_t bytes_to_ignore_on_recv;
 } LTTNG_PACKED;
 
 struct lttcomm_net_family {
@@ -305,8 +312,21 @@ struct lttcomm_session_msg {
                        char shm_path[PATH_MAX];
                } LTTNG_PACKED set_shm_path;
                struct {
-                       uint32_t pid;
-               } LTTNG_PACKED pid_tracker;
+                       uint32_t tracker_type;  /* enum lttng_tracker_type */
+                       uint32_t id_type;       /* enum lttng_tracker_id_type */
+                       union {
+                               int32_t value;
+                               uint32_t var_len;
+                       } u;
+                       /*
+                        * for LTTNG_ID_STRING, followed by a variable length
+                        * zero-terminated string of length "var_len", which
+                        * includes the final \0.
+                        */
+               } LTTNG_PACKED id_tracker;
+               struct {
+                       uint32_t tracker_type;  /* enum lttng_tracker_type */
+               } LTTNG_PACKED id_tracker_list;
        } u;
 } LTTNG_PACKED;
 
@@ -341,6 +361,57 @@ struct lttng_event_exclusion {
 #define LTTNG_EVENT_EXCLUSION_NAME_AT(_exclusion, _i) \
        (&(_exclusion)->names[_i][0])
 
+/*
+ * Event command header.
+ */
+struct lttcomm_event_command_header {
+       /* Number of events */
+       uint32_t nb_events;
+} LTTNG_PACKED;
+
+/*
+ * Event extended info header. This is the structure preceding each
+ * extended info data.
+ */
+struct lttcomm_event_extended_header {
+       /*
+        * Size of filter string immediately following this header.
+        * This size includes the terminal null character.
+        */
+       uint32_t filter_len;
+
+       /*
+        * Number of exclusion names, immediately following the filter
+        * string. Each exclusion name has a fixed length of
+        * LTTNG_SYMBOL_NAME_LEN bytes, including the terminal null
+        * character.
+        */
+       uint32_t nb_exclusions;
+} LTTNG_PACKED;
+
+/*
+ * Channel extended info.
+ */
+struct lttcomm_channel_extended {
+       uint64_t discarded_events;
+       uint64_t lost_packets;
+} LTTNG_PACKED;
+
+/*
+ * tracker command header.
+ */
+struct lttcomm_tracker_command_header {
+       uint32_t nb_tracker_id;
+} LTTNG_PACKED;
+
+struct lttcomm_tracker_id_header {
+       uint32_t type;   /* enum lttng_tracker_id_type */
+       union {
+               int32_t value;
+               uint32_t var_data_len;
+       } u;
+} LTTNG_PACKED;
+
 /*
  * Data structure for the response from sessiond to the lttng client.
  */
@@ -383,6 +454,8 @@ struct lttcomm_consumer_msg {
                        uint32_t monitor;
                        /* timer to check the streams usage in live mode (usec). */
                        unsigned int live_timer_interval;
+                       /* is part of a live session */
+                       uint8_t is_live;
                } LTTNG_PACKED channel; /* Only used by Kernel. */
                struct {
                        uint64_t stream_key;
@@ -414,6 +487,7 @@ struct lttcomm_consumer_msg {
                        uint32_t switch_timer_interval;         /* usec */
                        uint32_t read_timer_interval;           /* usec */
                        unsigned int live_timer_interval;               /* usec */
+                       uint8_t is_live;                        /* is part of a live session */
                        int32_t output;                         /* splice, mmap */
                        int32_t type;                           /* metadata or per_cpu */
                        uint64_t session_id;                    /* Tracing session id */
@@ -450,6 +524,7 @@ struct lttcomm_consumer_msg {
                        uint64_t key;   /* Metadata channel key. */
                        uint64_t target_offset; /* Offset in the consumer */
                        uint64_t len;   /* Length of metadata to be received. */
+                       uint64_t version; /* Version of the metadata. */
                } LTTNG_PACKED push_metadata;
                struct {
                        uint64_t key;   /* Metadata channel key. */
@@ -460,6 +535,15 @@ struct lttcomm_consumer_msg {
                struct {
                        uint64_t key;   /* Channel key. */
                } LTTNG_PACKED flush_channel;
+               struct {
+                       uint64_t key;   /* Channel key. */
+               } LTTNG_PACKED stop_live_timer;
+               struct {
+                       uint64_t key;   /* Channel key. */
+               } LTTNG_PACKED start_live_timer;
+               struct {
+                       uint64_t key;   /* Channel key. */
+               } LTTNG_PACKED clear_quiescent_channel;
                struct {
                        char pathname[PATH_MAX];
                        /* Indicate if the snapshot goes on the relayd or locally. */
@@ -473,6 +557,17 @@ struct lttcomm_consumer_msg {
                        uint64_t channel_key;
                        uint64_t net_seq_idx;
                } LTTNG_PACKED sent_streams;
+               struct {
+                       uint64_t session_id;
+                       uint64_t channel_key;
+               } LTTNG_PACKED discarded_events;
+               struct {
+                       uint64_t session_id;
+                       uint64_t channel_key;
+               } LTTNG_PACKED lost_packets;
+               struct {
+                       uint64_t session_id;
+               } LTTNG_PACKED regenerate_metadata;
        } u;
 } LTTNG_PACKED;
 
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