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, TDB_DATA key,
36 return NT_STATUS_INVALID_PARAMETER;
39 status = dbwrap_fetch(db, talloc_tos(), key, &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_fetch_int32_bystring(struct db_context *db, const char *keystr,
57 return dbwrap_fetch_int32(db, string_term_tdb_data(keystr), result);
60 NTSTATUS dbwrap_store_int32_bystring(struct db_context *db, const char *keystr,
63 struct db_record *rec;
67 rec = dbwrap_fetch_locked(db, talloc_tos(),
68 string_term_tdb_data(keystr));
70 return NT_STATUS_UNSUCCESSFUL;
73 SIVAL(&v_store, 0, v);
75 status = dbwrap_record_store(rec,
76 make_tdb_data((const uint8_t *)&v_store,
83 NTSTATUS dbwrap_fetch_uint32_bystring(struct db_context *db,
84 const char *keystr, uint32_t *val)
90 return NT_STATUS_INVALID_PARAMETER;
93 status = dbwrap_fetch_bystring(db, talloc_tos(), keystr, &dbuf);
94 if (!NT_STATUS_IS_OK(status)) {
98 if ((dbuf.dptr == NULL) || (dbuf.dsize != sizeof(uint32_t))) {
99 TALLOC_FREE(dbuf.dptr);
100 return NT_STATUS_NOT_FOUND;
103 *val = IVAL(dbuf.dptr, 0);
104 TALLOC_FREE(dbuf.dptr);
108 NTSTATUS dbwrap_store_uint32_bystring(struct db_context *db,
109 const char *keystr, uint32_t v)
111 struct db_record *rec;
115 rec = dbwrap_fetch_locked(db, talloc_tos(),
116 string_term_tdb_data(keystr));
118 return NT_STATUS_INVALID_PARAMETER;
121 SIVAL(&v_store, 0, v);
123 status = dbwrap_record_store(rec,
124 make_tdb_data((const uint8_t *)&v_store,
132 * Atomic unsigned integer change (addition):
134 * if value does not exist yet in the db, use *oldval as initial old value.
135 * return old value in *oldval.
136 * store *oldval + change_val to db.
139 struct dbwrap_change_uint32_atomic_context {
145 static NTSTATUS dbwrap_change_uint32_atomic_action(struct db_context *db,
148 struct db_record *rec;
149 uint32_t val = (uint32_t)-1;
152 struct dbwrap_change_uint32_atomic_context *state;
155 state = (struct dbwrap_change_uint32_atomic_context *)private_data;
157 rec = dbwrap_fetch_locked(db, talloc_tos(),
158 string_term_tdb_data(state->keystr));
160 return NT_STATUS_UNSUCCESSFUL;
163 value = dbwrap_record_get_value(rec);
165 if (value.dptr == NULL) {
166 val = *(state->oldval);
167 } else if (value.dsize == sizeof(val)) {
168 val = IVAL(value.dptr, 0);
169 *(state->oldval) = val;
171 ret = NT_STATUS_UNSUCCESSFUL;
175 val += state->change_val;
177 SIVAL(&v_store, 0, val);
179 ret = dbwrap_record_store(rec,
180 make_tdb_data((const uint8_t *)&v_store,
189 NTSTATUS dbwrap_change_uint32_atomic_bystring(struct db_context *db,
195 struct dbwrap_change_uint32_atomic_context state;
197 state.keystr = keystr;
198 state.oldval = oldval;
199 state.change_val = change_val;
201 ret = dbwrap_change_uint32_atomic_action(db, &state);
206 NTSTATUS dbwrap_trans_change_uint32_atomic_bystring(struct db_context *db,
212 struct dbwrap_change_uint32_atomic_context state;
214 state.keystr = keystr;
215 state.oldval = oldval;
216 state.change_val = change_val;
218 ret = dbwrap_trans_do(db, dbwrap_change_uint32_atomic_action, &state);
224 * Atomic integer change (addition):
226 * if value does not exist yet in the db, use *oldval as initial old value.
227 * return old value in *oldval.
228 * store *oldval + change_val to db.
231 struct dbwrap_change_int32_atomic_context {
237 static NTSTATUS dbwrap_change_int32_atomic_action(struct db_context *db,
240 struct db_record *rec;
244 struct dbwrap_change_int32_atomic_context *state;
247 state = (struct dbwrap_change_int32_atomic_context *)private_data;
249 rec = dbwrap_fetch_locked(db, talloc_tos(), state->key);
251 return NT_STATUS_UNSUCCESSFUL;
254 value = dbwrap_record_get_value(rec);
256 if (value.dptr == NULL) {
257 val = *(state->oldval);
258 } else if (value.dsize == sizeof(val)) {
259 val = IVAL(value.dptr, 0);
260 *(state->oldval) = val;
262 ret = NT_STATUS_UNSUCCESSFUL;
266 val += state->change_val;
268 SIVAL(&v_store, 0, val);
270 ret = dbwrap_record_store(rec,
271 make_tdb_data((const uint8_t *)&v_store,
280 NTSTATUS dbwrap_change_int32_atomic(struct db_context *db,
286 struct dbwrap_change_int32_atomic_context state;
289 state.oldval = oldval;
290 state.change_val = change_val;
292 ret = dbwrap_change_int32_atomic_action(db, &state);
297 NTSTATUS dbwrap_change_int32_atomic_bystring(struct db_context *db,
302 return dbwrap_change_int32_atomic(db, string_term_tdb_data(keystr),
306 NTSTATUS dbwrap_trans_change_int32_atomic_bystring(struct db_context *db,
312 struct dbwrap_change_int32_atomic_context state;
314 state.key = string_term_tdb_data(keystr);
315 state.oldval = oldval;
316 state.change_val = change_val;
318 ret = dbwrap_trans_do(db, dbwrap_change_int32_atomic_action, &state);
323 struct dbwrap_store_context {
329 static NTSTATUS dbwrap_store_action(struct db_context *db, void *private_data)
331 struct db_record *rec = NULL;
333 struct dbwrap_store_context *store_ctx;
335 store_ctx = (struct dbwrap_store_context *)private_data;
337 rec = dbwrap_fetch_locked(db, talloc_tos(), *(store_ctx->key));
339 DEBUG(5, ("fetch_locked failed\n"));
340 return NT_STATUS_NO_MEMORY;
343 status = dbwrap_record_store(rec, *(store_ctx->dbuf), store_ctx->flag);
344 if (!NT_STATUS_IS_OK(status)) {
345 DEBUG(5, ("store returned %s\n", nt_errstr(status)));
352 NTSTATUS dbwrap_trans_store(struct db_context *db, TDB_DATA key, TDB_DATA dbuf,
356 struct dbwrap_store_context store_ctx;
358 store_ctx.key = &key;
359 store_ctx.dbuf = &dbuf;
360 store_ctx.flag = flag;
362 status = dbwrap_trans_do(db, dbwrap_store_action, &store_ctx);
367 static NTSTATUS dbwrap_delete_action(struct db_context * db, void *private_data)
370 struct db_record *rec;
371 TDB_DATA *key = (TDB_DATA *)private_data;
373 rec = dbwrap_fetch_locked(db, talloc_tos(), *key);
375 DEBUG(5, ("fetch_locked failed\n"));
376 return NT_STATUS_NO_MEMORY;
379 status = dbwrap_record_delete(rec);
380 if (!NT_STATUS_IS_OK(status)) {
381 DEBUG(5, ("delete_rec returned %s\n", nt_errstr(status)));
388 NTSTATUS dbwrap_trans_delete(struct db_context *db, TDB_DATA key)
392 status = dbwrap_trans_do(db, dbwrap_delete_action, &key);
397 NTSTATUS dbwrap_trans_store_int32_bystring(struct db_context *db,
403 SIVAL(&v_store, 0, v);
405 return dbwrap_trans_store(db, string_term_tdb_data(keystr),
406 make_tdb_data((const uint8_t *)&v_store,
411 NTSTATUS dbwrap_trans_store_uint32_bystring(struct db_context *db,
417 SIVAL(&v_store, 0, v);
419 return dbwrap_trans_store(db, string_term_tdb_data(keystr),
420 make_tdb_data((const uint8_t *)&v_store,
425 NTSTATUS dbwrap_trans_store_bystring(struct db_context *db, const char *key,
426 TDB_DATA data, int flags)
428 return dbwrap_trans_store(db, string_term_tdb_data(key), data, flags);
431 NTSTATUS dbwrap_trans_delete_bystring(struct db_context *db, const char *key)
433 return dbwrap_trans_delete(db, string_term_tdb_data(key));
437 * Wrap db action(s) into a transaction.
439 NTSTATUS dbwrap_trans_do(struct db_context *db,
440 NTSTATUS (*action)(struct db_context *, void *),
446 res = dbwrap_transaction_start(db);
448 DEBUG(5, ("transaction_start failed\n"));
449 return NT_STATUS_INTERNAL_DB_CORRUPTION;
452 status = action(db, private_data);
453 if (!NT_STATUS_IS_OK(status)) {
454 if (dbwrap_transaction_cancel(db) != 0) {
455 smb_panic("Cancelling transaction failed");
460 res = dbwrap_transaction_commit(db);
465 DEBUG(2, ("transaction_commit failed\n"));
466 return NT_STATUS_INTERNAL_DB_CORRUPTION;
469 struct dbwrap_trans_traverse_action_ctx {
470 int (*f)(struct db_record* rec, void* private_data);
475 static NTSTATUS dbwrap_trans_traverse_action(struct db_context* db, void* private_data)
477 struct dbwrap_trans_traverse_action_ctx* ctx =
478 (struct dbwrap_trans_traverse_action_ctx*)private_data;
480 NTSTATUS status = dbwrap_traverse(db, ctx->f, ctx->private_data, NULL);
485 NTSTATUS dbwrap_trans_traverse(struct db_context *db,
486 int (*f)(struct db_record*, void*),
489 struct dbwrap_trans_traverse_action_ctx ctx = {
491 .private_data = private_data,
493 return dbwrap_trans_do(db, dbwrap_trans_traverse_action, &ctx);
496 NTSTATUS dbwrap_delete_bystring(struct db_context *db, const char *key)
498 return dbwrap_delete(db, string_term_tdb_data(key));
501 NTSTATUS dbwrap_store_bystring(struct db_context *db, const char *key,
502 TDB_DATA data, int flags)
504 return dbwrap_store(db, string_term_tdb_data(key), data, flags);
507 NTSTATUS dbwrap_fetch_bystring(struct db_context *db, TALLOC_CTX *mem_ctx,
508 const char *key, TDB_DATA *value)
510 return dbwrap_fetch(db, mem_ctx, string_term_tdb_data(key), value);
515 NTSTATUS dbwrap_delete_bystring_upper(struct db_context *db, const char *key)
520 key_upper = talloc_strdup_upper(talloc_tos(), key);
521 if (key_upper == NULL) {
522 return NT_STATUS_NO_MEMORY;
525 status = dbwrap_delete_bystring(db, key_upper);
527 talloc_free(key_upper);
531 NTSTATUS dbwrap_store_bystring_upper(struct db_context *db, const char *key,
532 TDB_DATA data, int flags)
537 key_upper = talloc_strdup_upper(talloc_tos(), key);
538 if (key_upper == NULL) {
539 return NT_STATUS_NO_MEMORY;
542 status = dbwrap_store_bystring(db, key_upper, data, flags);
544 talloc_free(key_upper);
548 NTSTATUS dbwrap_fetch_bystring_upper(struct db_context *db, TALLOC_CTX *mem_ctx,
549 const char *key, TDB_DATA *value)
554 key_upper = talloc_strdup_upper(talloc_tos(), key);
555 if (key_upper == NULL) {
556 return NT_STATUS_NO_MEMORY;
559 status = dbwrap_fetch_bystring(db, mem_ctx, key_upper, value);
561 talloc_free(key_upper);