2 Unix SMB/CIFS implementation.
3 Utility functions for the dbwrap API
4 Copyright (C) Volker Lendecke 2007
5 Copyright (C) Michael Adam 2009
6 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2006
8 Major code contributions from Aleksey Fedoseev (fedoseev@ru.ibm.com)
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include "lib/util/util_tdb.h"
29 NTSTATUS
dbwrap_fetch_int32(struct db_context
*db
, const char *keystr
,
36 return NT_STATUS_INVALID_PARAMETER
;
39 status
= dbwrap_fetch_bystring(db
, NULL
, keystr
, &dbuf
);
40 if (!NT_STATUS_IS_OK(status
)) {
44 if ((dbuf
.dptr
== NULL
) || (dbuf
.dsize
!= sizeof(int32_t))) {
45 TALLOC_FREE(dbuf
.dptr
);
46 return NT_STATUS_NOT_FOUND
;
49 *result
= IVAL(dbuf
.dptr
, 0);
50 TALLOC_FREE(dbuf
.dptr
);
54 NTSTATUS
dbwrap_store_int32(struct db_context
*db
, const char *keystr
,
57 struct db_record
*rec
;
61 rec
= dbwrap_fetch_locked(db
, NULL
, string_term_tdb_data(keystr
));
63 return NT_STATUS_UNSUCCESSFUL
;
66 SIVAL(&v_store
, 0, v
);
68 status
= dbwrap_record_store(rec
,
69 make_tdb_data((const uint8_t *)&v_store
,
76 NTSTATUS
dbwrap_fetch_uint32(struct db_context
*db
, const char *keystr
,
83 return NT_STATUS_INVALID_PARAMETER
;
86 status
= dbwrap_fetch_bystring(db
, NULL
, keystr
, &dbuf
);
87 if (!NT_STATUS_IS_OK(status
)) {
91 if ((dbuf
.dptr
== NULL
) || (dbuf
.dsize
!= sizeof(uint32_t))) {
92 TALLOC_FREE(dbuf
.dptr
);
93 return NT_STATUS_NOT_FOUND
;
96 *val
= IVAL(dbuf
.dptr
, 0);
97 TALLOC_FREE(dbuf
.dptr
);
101 NTSTATUS
dbwrap_store_uint32(struct db_context
*db
, const char *keystr
,
104 struct db_record
*rec
;
108 rec
= dbwrap_fetch_locked(db
, NULL
, string_term_tdb_data(keystr
));
110 return NT_STATUS_INVALID_PARAMETER
;
113 SIVAL(&v_store
, 0, v
);
115 status
= dbwrap_record_store(rec
,
116 make_tdb_data((const uint8_t *)&v_store
,
124 * Atomic unsigned integer change (addition):
126 * if value does not exist yet in the db, use *oldval as initial old value.
127 * return old value in *oldval.
128 * store *oldval + change_val to db.
131 struct dbwrap_change_uint32_atomic_context
{
137 static NTSTATUS
dbwrap_change_uint32_atomic_action(struct db_context
*db
,
140 struct db_record
*rec
;
141 uint32_t val
= (uint32_t)-1;
144 struct dbwrap_change_uint32_atomic_context
*state
;
147 state
= (struct dbwrap_change_uint32_atomic_context
*)private_data
;
149 rec
= dbwrap_fetch_locked(db
, NULL
, string_term_tdb_data(state
->keystr
));
151 return NT_STATUS_UNSUCCESSFUL
;
154 value
= dbwrap_record_get_value(rec
);
156 if (value
.dptr
== NULL
) {
157 val
= *(state
->oldval
);
158 } else if (value
.dsize
== sizeof(val
)) {
159 val
= IVAL(value
.dptr
, 0);
160 *(state
->oldval
) = val
;
162 ret
= NT_STATUS_UNSUCCESSFUL
;
166 val
+= state
->change_val
;
168 SIVAL(&v_store
, 0, val
);
170 ret
= dbwrap_record_store(rec
,
171 make_tdb_data((const uint8_t *)&v_store
,
180 NTSTATUS
dbwrap_change_uint32_atomic(struct db_context
*db
, const char *keystr
,
181 uint32_t *oldval
, uint32_t change_val
)
184 struct dbwrap_change_uint32_atomic_context state
;
186 state
.keystr
= keystr
;
187 state
.oldval
= oldval
;
188 state
.change_val
= change_val
;
190 ret
= dbwrap_change_uint32_atomic_action(db
, &state
);
195 NTSTATUS
dbwrap_trans_change_uint32_atomic(struct db_context
*db
,
201 struct dbwrap_change_uint32_atomic_context state
;
203 state
.keystr
= keystr
;
204 state
.oldval
= oldval
;
205 state
.change_val
= change_val
;
207 ret
= dbwrap_trans_do(db
, dbwrap_change_uint32_atomic_action
, &state
);
213 * Atomic integer change (addition):
215 * if value does not exist yet in the db, use *oldval as initial old value.
216 * return old value in *oldval.
217 * store *oldval + change_val to db.
220 struct dbwrap_change_int32_atomic_context
{
226 static NTSTATUS
dbwrap_change_int32_atomic_action(struct db_context
*db
,
229 struct db_record
*rec
;
233 struct dbwrap_change_int32_atomic_context
*state
;
236 state
= (struct dbwrap_change_int32_atomic_context
*)private_data
;
238 rec
= dbwrap_fetch_locked(db
, NULL
, string_term_tdb_data(state
->keystr
));
240 return NT_STATUS_UNSUCCESSFUL
;
243 value
= dbwrap_record_get_value(rec
);
245 if (value
.dptr
== NULL
) {
246 val
= *(state
->oldval
);
247 } else if (value
.dsize
== sizeof(val
)) {
248 val
= IVAL(value
.dptr
, 0);
249 *(state
->oldval
) = val
;
251 ret
= NT_STATUS_UNSUCCESSFUL
;
255 val
+= state
->change_val
;
257 SIVAL(&v_store
, 0, val
);
259 ret
= dbwrap_record_store(rec
,
260 make_tdb_data((const uint8_t *)&v_store
,
269 NTSTATUS
dbwrap_change_int32_atomic(struct db_context
*db
, const char *keystr
,
270 int32_t *oldval
, int32_t change_val
)
273 struct dbwrap_change_int32_atomic_context state
;
275 state
.keystr
= keystr
;
276 state
.oldval
= oldval
;
277 state
.change_val
= change_val
;
279 ret
= dbwrap_change_int32_atomic_action(db
, &state
);
284 NTSTATUS
dbwrap_trans_change_int32_atomic(struct db_context
*db
,
290 struct dbwrap_change_int32_atomic_context state
;
292 state
.keystr
= keystr
;
293 state
.oldval
= oldval
;
294 state
.change_val
= change_val
;
296 ret
= dbwrap_trans_do(db
, dbwrap_change_int32_atomic_action
, &state
);
301 struct dbwrap_store_context
{
307 static NTSTATUS
dbwrap_store_action(struct db_context
*db
, void *private_data
)
309 struct db_record
*rec
= NULL
;
311 struct dbwrap_store_context
*store_ctx
;
313 store_ctx
= (struct dbwrap_store_context
*)private_data
;
315 rec
= dbwrap_fetch_locked(db
, talloc_tos(), *(store_ctx
->key
));
317 DEBUG(5, ("fetch_locked failed\n"));
318 return NT_STATUS_NO_MEMORY
;
321 status
= dbwrap_record_store(rec
, *(store_ctx
->dbuf
), store_ctx
->flag
);
322 if (!NT_STATUS_IS_OK(status
)) {
323 DEBUG(5, ("store returned %s\n", nt_errstr(status
)));
330 NTSTATUS
dbwrap_trans_store(struct db_context
*db
, TDB_DATA key
, TDB_DATA dbuf
,
334 struct dbwrap_store_context store_ctx
;
336 store_ctx
.key
= &key
;
337 store_ctx
.dbuf
= &dbuf
;
338 store_ctx
.flag
= flag
;
340 status
= dbwrap_trans_do(db
, dbwrap_store_action
, &store_ctx
);
345 static NTSTATUS
dbwrap_delete_action(struct db_context
* db
, void *private_data
)
348 struct db_record
*rec
;
349 TDB_DATA
*key
= (TDB_DATA
*)private_data
;
351 rec
= dbwrap_fetch_locked(db
, talloc_tos(), *key
);
353 DEBUG(5, ("fetch_locked failed\n"));
354 return NT_STATUS_NO_MEMORY
;
357 status
= dbwrap_record_delete(rec
);
358 if (!NT_STATUS_IS_OK(status
)) {
359 DEBUG(5, ("delete_rec returned %s\n", nt_errstr(status
)));
366 NTSTATUS
dbwrap_trans_delete(struct db_context
*db
, TDB_DATA key
)
370 status
= dbwrap_trans_do(db
, dbwrap_delete_action
, &key
);
375 NTSTATUS
dbwrap_trans_store_int32(struct db_context
*db
, const char *keystr
,
380 SIVAL(&v_store
, 0, v
);
382 return dbwrap_trans_store(db
, string_term_tdb_data(keystr
),
383 make_tdb_data((const uint8_t *)&v_store
,
388 NTSTATUS
dbwrap_trans_store_uint32(struct db_context
*db
, const char *keystr
,
393 SIVAL(&v_store
, 0, v
);
395 return dbwrap_trans_store(db
, string_term_tdb_data(keystr
),
396 make_tdb_data((const uint8_t *)&v_store
,
401 NTSTATUS
dbwrap_trans_store_bystring(struct db_context
*db
, const char *key
,
402 TDB_DATA data
, int flags
)
404 return dbwrap_trans_store(db
, string_term_tdb_data(key
), data
, flags
);
407 NTSTATUS
dbwrap_trans_delete_bystring(struct db_context
*db
, const char *key
)
409 return dbwrap_trans_delete(db
, string_term_tdb_data(key
));
413 * Wrap db action(s) into a transaction.
415 NTSTATUS
dbwrap_trans_do(struct db_context
*db
,
416 NTSTATUS (*action
)(struct db_context
*, void *),
422 res
= dbwrap_transaction_start(db
);
424 DEBUG(5, ("transaction_start failed\n"));
425 return NT_STATUS_INTERNAL_DB_CORRUPTION
;
428 status
= action(db
, private_data
);
429 if (!NT_STATUS_IS_OK(status
)) {
430 if (dbwrap_transaction_cancel(db
) != 0) {
431 smb_panic("Cancelling transaction failed");
436 res
= dbwrap_transaction_commit(db
);
441 DEBUG(2, ("transaction_commit failed\n"));
442 return NT_STATUS_INTERNAL_DB_CORRUPTION
;
445 struct dbwrap_trans_traverse_action_ctx
{
446 int (*f
)(struct db_record
* rec
, void* private_data
);
451 static NTSTATUS
dbwrap_trans_traverse_action(struct db_context
* db
, void* private_data
)
453 struct dbwrap_trans_traverse_action_ctx
* ctx
=
454 (struct dbwrap_trans_traverse_action_ctx
*)private_data
;
456 NTSTATUS status
= dbwrap_traverse(db
, ctx
->f
, ctx
->private_data
, NULL
);
461 NTSTATUS
dbwrap_trans_traverse(struct db_context
*db
,
462 int (*f
)(struct db_record
*, void*),
465 struct dbwrap_trans_traverse_action_ctx ctx
= {
467 .private_data
= private_data
,
469 return dbwrap_trans_do(db
, dbwrap_trans_traverse_action
, &ctx
);
472 NTSTATUS
dbwrap_delete_bystring(struct db_context
*db
, const char *key
)
474 return dbwrap_delete(db
, string_term_tdb_data(key
));
477 NTSTATUS
dbwrap_store_bystring(struct db_context
*db
, const char *key
,
478 TDB_DATA data
, int flags
)
480 return dbwrap_store(db
, string_term_tdb_data(key
), data
, flags
);
483 NTSTATUS
dbwrap_fetch_bystring(struct db_context
*db
, TALLOC_CTX
*mem_ctx
,
484 const char *key
, TDB_DATA
*value
)
486 return dbwrap_fetch(db
, mem_ctx
, string_term_tdb_data(key
), value
);
491 NTSTATUS
dbwrap_delete_bystring_upper(struct db_context
*db
, const char *key
)
496 key_upper
= talloc_strdup_upper(talloc_tos(), key
);
497 if (key_upper
== NULL
) {
498 return NT_STATUS_NO_MEMORY
;
501 status
= dbwrap_delete_bystring(db
, key_upper
);
503 talloc_free(key_upper
);
507 NTSTATUS
dbwrap_store_bystring_upper(struct db_context
*db
, const char *key
,
508 TDB_DATA data
, int flags
)
513 key_upper
= talloc_strdup_upper(talloc_tos(), key
);
514 if (key_upper
== NULL
) {
515 return NT_STATUS_NO_MEMORY
;
518 status
= dbwrap_store_bystring(db
, key_upper
, data
, flags
);
520 talloc_free(key_upper
);
524 NTSTATUS
dbwrap_fetch_bystring_upper(struct db_context
*db
, TALLOC_CTX
*mem_ctx
,
525 const char *key
, TDB_DATA
*value
)
530 key_upper
= talloc_strdup_upper(talloc_tos(), key
);
531 if (key_upper
== NULL
) {
532 return NT_STATUS_NO_MEMORY
;
535 status
= dbwrap_fetch_bystring(db
, mem_ctx
, key_upper
, value
);
537 talloc_free(key_upper
);