diff options
Diffstat (limited to 'source4/cluster')
| -rw-r--r-- | source4/cluster/cluster.c | 86 | ||||
| -rw-r--r-- | source4/cluster/cluster.h | 51 | ||||
| -rw-r--r-- | source4/cluster/cluster_private.h | 43 | ||||
| -rw-r--r-- | source4/cluster/local.c | 121 | ||||
| -rw-r--r-- | source4/cluster/wscript_build | 8 |
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 + ) + |