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 struct dbwrap_fetch_int32_state {
34 static void dbwrap_fetch_int32_parser(TDB_DATA key, TDB_DATA data,
37 struct dbwrap_fetch_int32_state *state =
38 (struct dbwrap_fetch_int32_state *)private_data;
40 if (data.dsize != sizeof(state->result)) {
41 state->status = NT_STATUS_INTERNAL_DB_CORRUPTION;
44 state->result = IVAL(data.dptr, 0);
45 state->status = NT_STATUS_OK;
48 NTSTATUS dbwrap_fetch_int32(struct db_context *db, TDB_DATA key,
51 struct dbwrap_fetch_int32_state state;
55 return NT_STATUS_INVALID_PARAMETER;
58 state.status = NT_STATUS_INTERNAL_ERROR;
60 status = dbwrap_parse_record(db, key, dbwrap_fetch_int32_parser, &state);
61 if (!NT_STATUS_IS_OK(status)) {
65 if (NT_STATUS_IS_OK(state.status)) {
66 *result = state.result;
71 NTSTATUS dbwrap_fetch_int32_bystring(struct db_context *db, const char *keystr,
74 return dbwrap_fetch_int32(db, string_term_tdb_data(keystr), result);
77 NTSTATUS dbwrap_store_int32_bystring(struct db_context *db, const char *keystr,
80 struct db_record *rec;
84 rec = dbwrap_fetch_locked(db, talloc_tos(),
85 string_term_tdb_data(keystr));
87 return NT_STATUS_UNSUCCESSFUL;
90 SIVAL(&v_store, 0, v);
92 status = dbwrap_record_store(rec,
93 make_tdb_data((const uint8_t *)&v_store,
100 struct dbwrap_fetch_uint32_state {
105 static void dbwrap_fetch_uint32_parser(TDB_DATA key, TDB_DATA data,
108 struct dbwrap_fetch_uint32_state *state =
109 (struct dbwrap_fetch_uint32_state *)private_data;
111 if (data.dsize != sizeof(state->result)) {
112 state->status = NT_STATUS_INTERNAL_DB_CORRUPTION;
115 state->result = IVAL(data.dptr, 0);
116 state->status = NT_STATUS_OK;
119 NTSTATUS dbwrap_fetch_uint32_bystring(struct db_context *db,
120 const char *keystr, uint32_t *val)
122 struct dbwrap_fetch_uint32_state state;
126 return NT_STATUS_INVALID_PARAMETER;
129 state.status = NT_STATUS_INTERNAL_ERROR;
131 status = dbwrap_parse_record(db, string_term_tdb_data(keystr),
132 dbwrap_fetch_uint32_parser, &state);
133 if (!NT_STATUS_IS_OK(status)) {
136 if (NT_STATUS_IS_OK(state.status)) {
142 NTSTATUS dbwrap_store_uint32_bystring(struct db_context *db,
143 const char *keystr, uint32_t v)
145 struct db_record *rec;
149 rec = dbwrap_fetch_locked(db, talloc_tos(),
150 string_term_tdb_data(keystr));
152 return NT_STATUS_INVALID_PARAMETER;
155 SIVAL(&v_store, 0, v);
157 status = dbwrap_record_store(rec,
158 make_tdb_data((const uint8_t *)&v_store,
166 * Atomic unsigned integer change (addition):
168 * if value does not exist yet in the db, use *oldval as initial old value.
169 * return old value in *oldval.
170 * store *oldval + change_val to db.
173 struct dbwrap_change_uint32_atomic_context {
179 static NTSTATUS dbwrap_change_uint32_atomic_action(struct db_context *db,
182 struct db_record *rec;
183 uint32_t val = (uint32_t)-1;
186 struct dbwrap_change_uint32_atomic_context *state;
189 state = (struct dbwrap_change_uint32_atomic_context *)private_data;
191 rec = dbwrap_fetch_locked(db, talloc_tos(),
192 string_term_tdb_data(state->keystr));
194 return NT_STATUS_UNSUCCESSFUL;
197 value = dbwrap_record_get_value(rec);
199 if (value.dptr == NULL) {
200 val = *(state->oldval);
201 } else if (value.dsize == sizeof(val)) {
202 val = IVAL(value.dptr, 0);
203 *(state->oldval) = val;
205 ret = NT_STATUS_UNSUCCESSFUL;
209 val += state->change_val;
211 SIVAL(&v_store, 0, val);
213 ret = dbwrap_record_store(rec,
214 make_tdb_data((const uint8_t *)&v_store,
223 NTSTATUS dbwrap_change_uint32_atomic_bystring(struct db_context *db,
229 struct dbwrap_change_uint32_atomic_context state;
231 state.keystr = keystr;
232 state.oldval = oldval;
233 state.change_val = change_val;
235 ret = dbwrap_change_uint32_atomic_action(db, &state);
240 NTSTATUS dbwrap_trans_change_uint32_atomic_bystring(struct db_context *db,
246 struct dbwrap_change_uint32_atomic_context state;
248 state.keystr = keystr;
249 state.oldval = oldval;
250 state.change_val = change_val;
252 ret = dbwrap_trans_do(db, dbwrap_change_uint32_atomic_action, &state);
258 * Atomic integer change (addition):
260 * if value does not exist yet in the db, use *oldval as initial old value.
261 * return old value in *oldval.
262 * store *oldval + change_val to db.
265 struct dbwrap_change_int32_atomic_context {
271 static NTSTATUS dbwrap_change_int32_atomic_action(struct db_context *db,
274 struct db_record *rec;
278 struct dbwrap_change_int32_atomic_context *state;
281 state = (struct dbwrap_change_int32_atomic_context *)private_data;
283 rec = dbwrap_fetch_locked(db, talloc_tos(), state->key);
285 return NT_STATUS_UNSUCCESSFUL;
288 value = dbwrap_record_get_value(rec);
290 if (value.dptr == NULL) {
291 val = *(state->oldval);
292 } else if (value.dsize == sizeof(val)) {
293 val = IVAL(value.dptr, 0);
294 *(state->oldval) = val;
296 ret = NT_STATUS_UNSUCCESSFUL;
300 val += state->change_val;
302 SIVAL(&v_store, 0, val);
304 ret = dbwrap_record_store(rec,
305 make_tdb_data((const uint8_t *)&v_store,
314 NTSTATUS dbwrap_change_int32_atomic(struct db_context *db,
320 struct dbwrap_change_int32_atomic_context state;
323 state.oldval = oldval;
324 state.change_val = change_val;
326 ret = dbwrap_change_int32_atomic_action(db, &state);
331 NTSTATUS dbwrap_change_int32_atomic_bystring(struct db_context *db,
336 return dbwrap_change_int32_atomic(db, string_term_tdb_data(keystr),
340 NTSTATUS dbwrap_trans_change_int32_atomic_bystring(struct db_context *db,
346 struct dbwrap_change_int32_atomic_context state;
348 state.key = string_term_tdb_data(keystr);
349 state.oldval = oldval;
350 state.change_val = change_val;
352 ret = dbwrap_trans_do(db, dbwrap_change_int32_atomic_action, &state);
357 struct dbwrap_store_context {
363 static NTSTATUS dbwrap_store_action(struct db_context *db, void *private_data)
365 struct db_record *rec = NULL;
367 struct dbwrap_store_context *store_ctx;
369 store_ctx = (struct dbwrap_store_context *)private_data;
371 rec = dbwrap_fetch_locked(db, talloc_tos(), *(store_ctx->key));
373 DEBUG(5, ("fetch_locked failed\n"));
374 return NT_STATUS_NO_MEMORY;
377 status = dbwrap_record_store(rec, *(store_ctx->dbuf), store_ctx->flag);
378 if (!NT_STATUS_IS_OK(status)) {
379 DEBUG(5, ("store returned %s\n", nt_errstr(status)));
386 NTSTATUS dbwrap_trans_store(struct db_context *db, TDB_DATA key, TDB_DATA dbuf,
390 struct dbwrap_store_context store_ctx;
392 store_ctx.key = &key;
393 store_ctx.dbuf = &dbuf;
394 store_ctx.flag = flag;
396 status = dbwrap_trans_do(db, dbwrap_store_action, &store_ctx);
401 static NTSTATUS dbwrap_delete_action(struct db_context * db, void *private_data)
404 struct db_record *rec;
405 TDB_DATA *key = (TDB_DATA *)private_data;
407 rec = dbwrap_fetch_locked(db, talloc_tos(), *key);
409 DEBUG(5, ("fetch_locked failed\n"));
410 return NT_STATUS_NO_MEMORY;
413 status = dbwrap_record_delete(rec);
414 if (!NT_STATUS_IS_OK(status)) {
415 DEBUG(5, ("delete_rec returned %s\n", nt_errstr(status)));
422 NTSTATUS dbwrap_trans_delete(struct db_context *db, TDB_DATA key)
426 status = dbwrap_trans_do(db, dbwrap_delete_action, &key);
431 NTSTATUS dbwrap_trans_store_int32_bystring(struct db_context *db,
437 SIVAL(&v_store, 0, v);
439 return dbwrap_trans_store(db, string_term_tdb_data(keystr),
440 make_tdb_data((const uint8_t *)&v_store,
445 NTSTATUS dbwrap_trans_store_uint32_bystring(struct db_context *db,
451 SIVAL(&v_store, 0, v);
453 return dbwrap_trans_store(db, string_term_tdb_data(keystr),
454 make_tdb_data((const uint8_t *)&v_store,
459 NTSTATUS dbwrap_trans_store_bystring(struct db_context *db, const char *key,
460 TDB_DATA data, int flags)
462 return dbwrap_trans_store(db, string_term_tdb_data(key), data, flags);
465 NTSTATUS dbwrap_trans_delete_bystring(struct db_context *db, const char *key)
467 return dbwrap_trans_delete(db, string_term_tdb_data(key));
471 * Wrap db action(s) into a transaction.
473 NTSTATUS dbwrap_trans_do(struct db_context *db,
474 NTSTATUS (*action)(struct db_context *, void *),
480 res = dbwrap_transaction_start(db);
482 DEBUG(5, ("transaction_start failed\n"));
483 return NT_STATUS_INTERNAL_DB_CORRUPTION;
486 status = action(db, private_data);
487 if (!NT_STATUS_IS_OK(status)) {
488 if (dbwrap_transaction_cancel(db) != 0) {
489 smb_panic("Cancelling transaction failed");
494 res = dbwrap_transaction_commit(db);
499 DEBUG(2, ("transaction_commit failed\n"));
500 return NT_STATUS_INTERNAL_DB_CORRUPTION;
503 struct dbwrap_trans_traverse_action_ctx {
504 int (*f)(struct db_record* rec, void* private_data);
509 static NTSTATUS dbwrap_trans_traverse_action(struct db_context* db, void* private_data)
511 struct dbwrap_trans_traverse_action_ctx* ctx =
512 (struct dbwrap_trans_traverse_action_ctx*)private_data;
514 NTSTATUS status = dbwrap_traverse(db, ctx->f, ctx->private_data, NULL);
519 NTSTATUS dbwrap_trans_traverse(struct db_context *db,
520 int (*f)(struct db_record*, void*),
523 struct dbwrap_trans_traverse_action_ctx ctx = {
525 .private_data = private_data,
527 return dbwrap_trans_do(db, dbwrap_trans_traverse_action, &ctx);
530 NTSTATUS dbwrap_delete_bystring(struct db_context *db, const char *key)
532 return dbwrap_delete(db, string_term_tdb_data(key));
535 NTSTATUS dbwrap_store_bystring(struct db_context *db, const char *key,
536 TDB_DATA data, int flags)
538 return dbwrap_store(db, string_term_tdb_data(key), data, flags);
541 NTSTATUS dbwrap_fetch_bystring(struct db_context *db, TALLOC_CTX *mem_ctx,
542 const char *key, TDB_DATA *value)
544 return dbwrap_fetch(db, mem_ctx, string_term_tdb_data(key), value);
549 NTSTATUS dbwrap_delete_bystring_upper(struct db_context *db, const char *key)
554 key_upper = talloc_strdup_upper(talloc_tos(), key);
555 if (key_upper == NULL) {
556 return NT_STATUS_NO_MEMORY;
559 status = dbwrap_delete_bystring(db, key_upper);
561 talloc_free(key_upper);
565 NTSTATUS dbwrap_store_bystring_upper(struct db_context *db, const char *key,
566 TDB_DATA data, int flags)
571 key_upper = talloc_strdup_upper(talloc_tos(), key);
572 if (key_upper == NULL) {
573 return NT_STATUS_NO_MEMORY;
576 status = dbwrap_store_bystring(db, key_upper, data, flags);
578 talloc_free(key_upper);
582 NTSTATUS dbwrap_fetch_bystring_upper(struct db_context *db, TALLOC_CTX *mem_ctx,
583 const char *key, TDB_DATA *value)
588 key_upper = talloc_strdup_upper(talloc_tos(), key);
589 if (key_upper == NULL) {
590 return NT_STATUS_NO_MEMORY;
593 status = dbwrap_fetch_bystring(db, mem_ctx, key_upper, value);
595 talloc_free(key_upper);