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 #include "dbwrap/dbwrap.h"
24 #include "dbwrap/dbwrap_private.h"
28 * Fall back using fetch_locked if no genuine fetch operation is provided
31 int dbwrap_fallback_fetch(struct db_context *db, TALLOC_CTX *mem_ctx,
32 TDB_DATA key, TDB_DATA *data)
34 struct db_record *rec;
36 if (!(rec = db->fetch_locked(db, mem_ctx, key))) {
40 data->dsize = rec->value.dsize;
41 data->dptr = talloc_move(mem_ctx, &rec->value.dptr);
47 * Fall back using fetch if no genuine exists operation is provided
50 static int dbwrap_fallback_exists(struct db_context *db, TDB_DATA key)
53 if ( db->fetch(db, talloc_tos(), key, &val) != 0 ) {
56 if (val.dptr == NULL ) {
59 TALLOC_FREE(val.dptr);
65 * Fall back using fetch if no genuine parse operation is provided
68 int dbwrap_fallback_parse_record(struct db_context *db, TDB_DATA key,
69 int (*parser)(TDB_DATA key,
77 res = db->fetch(db, talloc_tos(), key, &data);
82 res = parser(key, data, private_data);
83 TALLOC_FREE(data.dptr);
88 TDB_DATA dbwrap_fetch(struct db_context *db, TALLOC_CTX *mem_ctx,
93 if (db->fetch(db, mem_ctx, key, &result) != 0) {
94 return make_tdb_data(NULL, 0);
100 bool dbwrap_exists(struct db_context *db, TDB_DATA key)
103 if (db->exists != NULL) {
104 result = db->exists(db, key);
106 result = dbwrap_fallback_exists(db,key);
108 return (result == 1);
111 NTSTATUS dbwrap_store(struct db_context *db, TDB_DATA key,
112 TDB_DATA data, int flags)
114 struct db_record *rec;
117 rec = db->fetch_locked(db, talloc_tos(), key);
119 return NT_STATUS_NO_MEMORY;
122 status = rec->store(rec, data, flags);
127 NTSTATUS dbwrap_delete(struct db_context *db, TDB_DATA key)
129 struct db_record *rec;
132 rec = db->fetch_locked(db, talloc_tos(), key);
134 return NT_STATUS_NO_MEMORY;
136 status = rec->delete_rec(rec);
141 NTSTATUS dbwrap_traverse(struct db_context *db,
142 int (*f)(struct db_record*, void*),
146 int ret = db->traverse(db, f, private_data);
149 return NT_STATUS_INTERNAL_DB_CORRUPTION;
159 NTSTATUS dbwrap_traverse_read(struct db_context *db,
160 int (*f)(struct db_record*, void*),
164 int ret = db->traverse_read(db, f, private_data);
167 return NT_STATUS_INTERNAL_DB_CORRUPTION;
177 int dbwrap_parse_record(struct db_context *db, TDB_DATA key,
178 int (*parser)(TDB_DATA key, TDB_DATA data,
182 if (db->parse_record) {
183 return db->parse_record(db, key, parser, private_data);
185 return dbwrap_fallback_parse_record(db, key, parser, private_data);