2 Unix SMB/CIFS implementation.
3 Database interface wrapper
4 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2006
6 Major code contributions from Aleksey Fedoseev (fedoseev@ru.ibm.com)
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #ifdef CLUSTER_SUPPORT
24 #include "ctdb_private.h"
27 * Fall back using fetch_locked if no genuine fetch operation is provided
30 static int dbwrap_fallback_fetch(struct db_context
*db
, TALLOC_CTX
*mem_ctx
,
31 TDB_DATA key
, TDB_DATA
*data
)
33 struct db_record
*rec
;
35 if (!(rec
= db
->fetch_locked(db
, mem_ctx
, key
))) {
39 data
->dsize
= rec
->value
.dsize
;
40 data
->dptr
= talloc_move(mem_ctx
, &rec
->value
.dptr
);
46 * If you need transaction support use db_open_trans()
48 struct db_context
*db_open(TALLOC_CTX
*mem_ctx
,
50 int hash_size
, int tdb_flags
,
51 int open_flags
, mode_t mode
)
53 struct db_context
*result
= NULL
;
54 #ifdef CLUSTER_SUPPORT
55 const char *sockname
= lp_ctdbd_socket();
58 #ifdef CLUSTER_SUPPORT
59 if(!sockname
|| !*sockname
) {
63 if (lp_clustering() && socket_exist(sockname
)) {
65 /* ctdb only wants the file part of the name */
66 partname
= strrchr(name
, '/');
72 /* allow ctdb for individual databases to be disabled */
73 if (lp_parm_bool(-1, "ctdb", partname
, True
)) {
74 result
= db_open_ctdb(mem_ctx
, partname
, hash_size
,
75 tdb_flags
, open_flags
, mode
);
77 DEBUG(0,("failed to attach to ctdb %s\n",
79 smb_panic("failed to attach to a ctdb "
88 result
= db_open_tdb(mem_ctx
, name
, hash_size
,
89 tdb_flags
, open_flags
, mode
);
92 if ((result
!= NULL
) && (result
->fetch
== NULL
)) {
93 result
->fetch
= dbwrap_fallback_fetch
;
100 * If you use this you can only modify with a transaction
102 struct db_context
*db_open_trans(TALLOC_CTX
*mem_ctx
,
104 int hash_size
, int tdb_flags
,
105 int open_flags
, mode_t mode
)
107 /* TODO: implement this differently */
108 return db_open(mem_ctx
, name
, hash_size
, tdb_flags
, open_flags
, mode
);
111 NTSTATUS
dbwrap_delete_bystring(struct db_context
*db
, const char *key
)
113 struct db_record
*rec
;
116 rec
= db
->fetch_locked(db
, talloc_tos(), string_term_tdb_data(key
));
118 return NT_STATUS_NO_MEMORY
;
120 status
= rec
->delete_rec(rec
);
125 NTSTATUS
dbwrap_store_bystring(struct db_context
*db
, const char *key
,
126 TDB_DATA data
, int flags
)
128 struct db_record
*rec
;
131 rec
= db
->fetch_locked(db
, talloc_tos(), string_term_tdb_data(key
));
133 return NT_STATUS_NO_MEMORY
;
136 status
= rec
->store(rec
, data
, flags
);
141 TDB_DATA
dbwrap_fetch_bystring(struct db_context
*db
, TALLOC_CTX
*mem_ctx
,
146 if (db
->fetch(db
, mem_ctx
, string_term_tdb_data(key
), &result
) == -1) {
147 return make_tdb_data(NULL
, 0);