r23563: Add dump-event-list command to smbcontrol.

[sfrench/samba-autobuild/.git] / source / include / messages.h

diff --git a/source/include/messages.h b/source/include/messages.h
index 46c4660936b28315eb066632d22f5644e98a9e0e..8c829712eb17bccd611841e35248d399d8cbc801 100644 (file)
--- a/source/include/messages.h
+++ b/source/include/messages.h
@@ -22,6 +22,10 @@
 #ifndef _MESSAGES_H_
 #define _MESSAGES_H_
 
+/* change the message version with any incompatible changes in the protocol */
+#define MESSAGE_VERSION 2
+
+
 #define MSG_TYPE_MASK                  0xFFFF
 
 /* general messages */
@@ -79,6 +83,11 @@
  * Samba4 compatibility
  */
 #define MSG_PVFS_NOTIFY                        0x0310
+/*
+ * cluster reconfigure events
+ */
+#define MSG_SMB_BRL_VALIDATE           0x0311
+#define MSG_SMB_RELEASE_IP             0x0312
 
 /* winbind messages */
 #define MSG_WINBIND_FINISHED           0x0401
@@ -89,6 +98,9 @@
 #define MSG_WINBIND_TRY_TO_GO_ONLINE   0x0406
 #define MSG_WINBIND_FAILED_TO_GO_ONLINE 0x0407
 
+/* event messages */
+#define MSG_DUMP_EVENT_LIST            0x0500
+
 /*
  * Special flags passed to message_send. Allocated from the top, lets see when
  * it collides with the message types in the lower 16 bits :-)
@@ -110,24 +122,86 @@
 #define FLAG_MSG_PRINT_NOTIFY          0x0008
 #define FLAG_MSG_PRINT_GENERAL         0x0010
 
+
+/*
+ * Virtual Node Numbers are identifying a node within a cluster. Ctdbd sets
+ * this, we retrieve our vnn from it.
+ */
+
+#define NONCLUSTER_VNN (0xFFFFFFFF)
+
+/*
+ * ctdb gives us 64-bit server ids for messaging_send. This is done to avoid
+ * pid clashes and to be able to register for special messages like "all
+ * smbds".
+ *
+ * Normal individual server id's have the upper 32 bits to 0, I picked "1" for
+ * Samba, other subsystems might use something else.
+ */
+
+#define MSG_SRVID_SAMBA 0x0000000100000000LL
+
+
 struct server_id {
        pid_t pid;
+#ifdef CLUSTER_SUPPORT
+       uint32 vnn;
+#endif
 };
 
+
+
 struct messaging_context;
+struct messaging_rec;
 struct data_blob;
 
+/*
+ * struct messaging_context belongs to messages.c, but because we still have
+ * messaging_dispatch, we need it here. Once we get rid of signals for
+ * notifying processes, this will go.
+ */
+
+struct messaging_context {
+       struct server_id id;
+       struct event_context *event_ctx;
+       struct messaging_callback *callbacks;
+
+       struct messaging_backend *local;
+       struct messaging_backend *remote;
+};
+
+struct messaging_backend {
+       NTSTATUS (*send_fn)(struct messaging_context *msg_ctx,
+                           struct server_id pid, int msg_type,
+                           const struct data_blob *data,
+                           struct messaging_backend *backend);
+       void *private_data;
+};
+
+NTSTATUS messaging_tdb_init(struct messaging_context *msg_ctx,
+                           TALLOC_CTX *mem_ctx,
+                           struct messaging_backend **presult);
 void message_dispatch(struct messaging_context *msg_ctx);
+
+NTSTATUS messaging_ctdbd_init(struct messaging_context *msg_ctx,
+                             TALLOC_CTX *mem_ctx,
+                             struct messaging_backend **presult);
+struct ctdbd_connection *messaging_ctdbd_connection(void);
+
 BOOL message_send_all(struct messaging_context *msg_ctx,
                      int msg_type,
                      const void *buf, size_t len,
                      int *n_sent);
-void message_block(void);
-void message_unblock(void);
 struct event_context *messaging_event_context(struct messaging_context *msg_ctx);
 struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx, 
                                         struct server_id server_id, 
                                         struct event_context *ev);
+
+/*
+ * re-init after a fork
+ */
+NTSTATUS messaging_reinit(struct messaging_context *msg_ctx);
+
 NTSTATUS messaging_register(struct messaging_context *msg_ctx,
                            void *private_data,
                            uint32_t msg_type,
@@ -144,5 +218,7 @@ NTSTATUS messaging_send(struct messaging_context *msg_ctx,
 NTSTATUS messaging_send_buf(struct messaging_context *msg_ctx,
                            struct server_id server, uint32_t msg_type,
                            const uint8 *buf, size_t len);
+void messaging_dispatch_rec(struct messaging_context *msg_ctx,
+                           struct messaging_rec *rec);
 
 #endif