r20889: import ctdb cluster backend from bzr

it will be interesting to see how the build farm handles this
(This used to be commit 53be449630bd67d649a9e70cc7e25a9799c0616b)

1 files changed, 117 insertions, 0 deletions

diff --git a/source4/cluster/ctdb/include/ctdb.h b/source4/cluster/ctdb/include/ctdb.h
new file mode 100644
index 0000000000..21b9b5d1ce
--- /dev/null
+++ b/source4/cluster/ctdb/include/ctdb.h
@@ -0,0 +1,117 @@
+/* 
+   ctdb database library
+
+   Copyright (C) Andrew Tridgell  2006
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#ifndef _CTDB_H
+#define _CTDB_H
+
+/*
+  structure passed to a ctdb call function
+*/
+struct ctdb_call {
+	TDB_DATA key;          /* record key */
+	TDB_DATA record_data;  /* current data in the record */
+	TDB_DATA *new_data;    /* optionally updated record data */
+	TDB_DATA *call_data;   /* optionally passed from caller */
+	TDB_DATA *reply_data;  /* optionally returned by function */
+};
+
+#define CTDB_ERR_INVALID 1
+#define CTDB_ERR_NOMEM 2
+
+/*
+  ctdb flags
+*/
+#define CTDB_FLAG_SELF_CONNECT (1<<0)
+
+
+struct event_context;
+
+/*
+  initialise ctdb subsystem
+*/
+struct ctdb_context *ctdb_init(struct event_context *ev);
+
+/*
+  choose the transport
+*/
+int ctdb_set_transport(struct ctdb_context *ctdb, const char *transport);
+
+/*
+  set some flags
+*/
+void ctdb_set_flags(struct ctdb_context *ctdb, unsigned flags);
+
+/*
+  tell ctdb what address to listen on, in transport specific format
+*/
+int ctdb_set_address(struct ctdb_context *ctdb, const char *address);
+
+/*
+  tell ctdb what nodes are available. This takes a filename, which will contain
+  1 node address per line, in a transport specific format
+*/
+int ctdb_set_nlist(struct ctdb_context *ctdb, const char *nlist);
+
+/*
+  start the ctdb protocol
+*/
+int ctdb_start(struct ctdb_context *ctdb);
+
+/*
+  error string for last ctdb error
+*/
+const char *ctdb_errstr(struct ctdb_context *);
+
+/* a ctdb call function */
+typedef int (*ctdb_fn_t)(struct ctdb_call *);
+
+/*
+  setup a ctdb call function
+*/
+int ctdb_set_call(struct ctdb_context *ctdb, ctdb_fn_t fn, int id);
+
+/*
+  attach to a ctdb database
+*/
+int ctdb_attach(struct ctdb_context *ctdb, const char *name, int tdb_flags, 
+		int open_flags, mode_t mode);
+
+
+/*
+  make a ctdb call. The associated ctdb call function will be called on the DMASTER
+  for the given record
+*/
+int ctdb_call(struct ctdb_context *ctdb, TDB_DATA key, int call_id, 
+	      TDB_DATA *call_data, TDB_DATA *reply_data);
+
+/*
+  wait for all nodes to be connected - useful for test code
+*/
+void ctdb_connect_wait(struct ctdb_context *ctdb);
+
+/*
+  wait until we're the only node left
+*/
+void ctdb_wait_loop(struct ctdb_context *ctdb);
+
+/* return vnn of this node */
+uint32_t ctdb_get_vnn(struct ctdb_context *ctdb);
+
+#endif