Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 309 insertions, 0 deletions

diff --git a/source4/cluster/cluster.c b/source4/cluster/cluster.c
new file mode 100644
index 0000000..11c4194
--- /dev/null
+++ b/source4/cluster/cluster.c
@@ -0,0 +1,86 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   core clustering code
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program 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 General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "cluster/cluster.h"
+#include "cluster/cluster_private.h"
+#include "librpc/gen_ndr/misc.h"
+#include "librpc/gen_ndr/server_id.h"
+
+static struct cluster_ops *ops;
+
+/* set cluster operations */
+void cluster_set_ops(struct cluster_ops *new_ops)
+{
+	ops = new_ops;
+}
+
+/*
+  an ugly way of getting at the backend handle (eg. ctdb context) via the cluster API
+*/
+void *cluster_backend_handle(void)
+{
+	return ops->backend_handle(ops);
+}
+
+/* by default use the local ops */
+static void cluster_init(void)
+{
+	if (ops == NULL) cluster_local_init();
+}
+
+/*
+  create a server_id for the local node
+*/
+struct server_id cluster_id(uint64_t pid, uint32_t task_id)
+{
+	cluster_init();
+	return ops->cluster_id(ops, pid, task_id);
+}
+
+/*
+  open a temporary tdb in a cluster friendly manner
+*/
+struct db_context *cluster_db_tmp_open(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx, const char *dbbase, int flags)
+{
+	cluster_init();
+	return ops->cluster_db_tmp_open(ops, mem_ctx, lp_ctx, dbbase, flags);
+}
+
+
+/*
+  register a callback function for a messaging endpoint
+*/
+NTSTATUS cluster_message_init(struct imessaging_context *msg, struct server_id server,
+			      cluster_message_fn_t handler)
+{
+	cluster_init();
+	return ops->message_init(ops, msg, server, handler);
+}
+
+/*
+  send a message to another node in the cluster
+*/
+NTSTATUS cluster_message_send(struct server_id server, DATA_BLOB *data)
+{
+	cluster_init();
+	return ops->message_send(ops, server, data);
+}
diff --git a/source4/cluster/cluster.h b/source4/cluster/cluster.h
new file mode 100644
index 0000000..2bbbea2
--- /dev/null
+++ b/source4/cluster/cluster.h
@@ -0,0 +1,51 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   structures for clustering
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program 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 General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __CLUSTER_H__
+#define __CLUSTER_H__ 
+
+#include "librpc/gen_ndr/server_id.h"
+
+/*
+  test for same cluster id
+*/
+#define cluster_id_equal(id_1, id_2) ((id_1)->pid == (id_2)->pid \
+				    && (id_1)->task_id == (id_2)->task_id \
+				    && (id_1)->vnn == (id_2)->vnn)
+
+/*
+  test for same cluster node
+*/
+#define cluster_node_equal(id1, id2) ((id1)->vnn == (id2)->vnn)
+
+struct imessaging_context;
+typedef void (*cluster_message_fn_t)(struct imessaging_context *, DATA_BLOB);
+
+/* prototypes */
+struct server_id cluster_id(uint64_t id, uint32_t task_id);
+struct db_context *cluster_db_tmp_open(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx, const char *dbbase, int flags);
+void *cluster_backend_handle(void);
+
+NTSTATUS cluster_message_init(struct imessaging_context *msg, struct server_id server,
+			      cluster_message_fn_t handler);
+NTSTATUS cluster_message_send(struct server_id server, DATA_BLOB *data);
+
+#endif
diff --git a/source4/cluster/cluster_private.h b/source4/cluster/cluster_private.h
new file mode 100644
index 0000000..2b79922
--- /dev/null
+++ b/source4/cluster/cluster_private.h
@@ -0,0 +1,43 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   private structures for clustering
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program 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 General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _CLUSTER_PRIVATE_H_
+#define _CLUSTER_PRIVATE_H_
+
+struct cluster_ops {
+	struct server_id (*cluster_id)(struct cluster_ops *ops, uint64_t id, uint32_t id2);
+	struct db_context *(*cluster_db_tmp_open)(struct cluster_ops *,
+						 TALLOC_CTX *,
+						 struct loadparm_context *,
+						 const char *, int);
+	void *(*backend_handle)(struct cluster_ops *);
+	NTSTATUS (*message_init)(struct cluster_ops *ops, 
+				 struct imessaging_context *msg, struct server_id server,
+				 cluster_message_fn_t handler);
+	NTSTATUS (*message_send)(struct cluster_ops *ops,
+				 struct server_id server, DATA_BLOB *data);	
+	void *private_data; /* backend state */
+};
+
+void cluster_set_ops(struct cluster_ops *new_ops);
+void cluster_local_init(void);
+
+#endif
diff --git a/source4/cluster/local.c b/source4/cluster/local.c
new file mode 100644
index 0000000..ea36663
--- /dev/null
+++ b/source4/cluster/local.c
@@ -0,0 +1,121 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   local (dummy) clustering operations
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program 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 General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "cluster/cluster.h"
+#include "cluster/cluster_private.h"
+#include "dbwrap/dbwrap.h"
+#include "system/filesys.h"
+#include "param/param.h"
+#include "librpc/gen_ndr/server_id.h"
+
+/*
+  server a server_id for the local node
+*/
+static struct server_id local_id(struct cluster_ops *ops, uint64_t pid, uint32_t task_id)
+{
+	struct server_id server_id;
+	ZERO_STRUCT(server_id);
+	server_id.pid = pid;
+	server_id.task_id = task_id;
+	server_id.vnn = NONCLUSTER_VNN;
+	/* This is because we are not in the s3 serverid database */
+	server_id.unique_id = SERVERID_UNIQUE_ID_NOT_TO_VERIFY;
+	return server_id;
+}
+
+
+/*
+  open a tmp tdb for the local node. By using smbd_tmp_path() we don't need
+  TDB_CLEAR_IF_FIRST as the tmp path is wiped at startup
+*/
+static struct db_context *local_db_tmp_open(struct cluster_ops *ops,
+					    TALLOC_CTX *mem_ctx,
+					    struct loadparm_context *lp_ctx,
+					    const char *dbbase, int flags)
+{
+	TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
+	char *path, *dbname;
+	struct db_context *db;
+	int hash_size, tdb_flags;
+
+	dbname = talloc_asprintf(mem_ctx, "%s.tdb", dbbase);
+
+	path = smbd_tmp_path(tmp_ctx, lp_ctx, dbname);
+
+	hash_size = lpcfg_tdb_hash_size(lp_ctx, path);
+	tdb_flags = lpcfg_tdb_flags(lp_ctx, flags);
+
+	db = dbwrap_local_open(
+		mem_ctx,
+		path,
+		hash_size,
+		tdb_flags,
+		O_RDWR|O_CREAT,
+		0600,
+		DBWRAP_LOCK_ORDER_NONE,
+		DBWRAP_FLAG_NONE);
+	talloc_free(tmp_ctx);
+	return db;
+}
+
+/*
+  dummy backend handle function
+*/
+static void *local_backend_handle(struct cluster_ops *ops)
+{
+	return NULL;
+}
+
+/*
+  dummy message init function - not needed as all messages are local
+*/
+static NTSTATUS local_message_init(struct cluster_ops *ops,
+				   struct imessaging_context *msg,
+				   struct server_id server,
+				   cluster_message_fn_t handler)
+{
+	return NT_STATUS_OK;
+}
+
+/*
+  dummy message send
+*/
+static NTSTATUS local_message_send(struct cluster_ops *ops,
+				   struct server_id server, DATA_BLOB *data)
+{
+	return NT_STATUS_INVALID_DEVICE_REQUEST;
+}
+
+static struct cluster_ops cluster_local_ops = {
+	.cluster_id           = local_id,
+	.cluster_db_tmp_open  = local_db_tmp_open,
+	.backend_handle       = local_backend_handle,
+	.message_init         = local_message_init,
+	.message_send         = local_message_send,
+	.private_data         = NULL
+};
+
+void cluster_local_init(void)
+{
+	cluster_set_ops(&cluster_local_ops);
+}
+
diff --git a/source4/cluster/wscript_build b/source4/cluster/wscript_build
new file mode 100644
index 0000000..b8a91cc
--- /dev/null
+++ b/source4/cluster/wscript_build
@@ -0,0 +1,8 @@
+#!/usr/bin/env python
+
+bld.SAMBA_LIBRARY('cluster',
+                  source='cluster.c local.c',
+                  deps='dbwrap samba-hostconfig talloc',
+                  private_library=True
+                  )
+