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.
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 *)&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 int dbwrap_store_uint32(struct db_context *db, const char *keystr, uint32_t v)
103 struct db_record *rec;
107 rec = dbwrap_fetch_locked(db, NULL, string_term_tdb_data(keystr));
112 SIVAL(&v_store, 0, v);
114 status = dbwrap_record_store(rec,
115 make_tdb_data((const uint8 *)&v_store,
119 return NT_STATUS_IS_OK(status) ? 0 : -1;
123 * Atomic unsigned integer change (addition):
125 * if value does not exist yet in the db, use *oldval as initial old value.
126 * return old value in *oldval.
127 * store *oldval + change_val to db.
130 struct dbwrap_change_uint32_atomic_context {
136 static NTSTATUS dbwrap_change_uint32_atomic_action(struct db_context *db,
139 struct db_record *rec;
140 uint32_t val = (uint32_t)-1;
143 struct dbwrap_change_uint32_atomic_context *state;
146 state = (struct dbwrap_change_uint32_atomic_context *)private_data;
148 rec = dbwrap_fetch_locked(db, NULL, string_term_tdb_data(state->keystr));
150 return NT_STATUS_UNSUCCESSFUL;
153 value = dbwrap_record_get_value(rec);
155 if (value.dptr == NULL) {
156 val = *(state->oldval);
157 } else if (value.dsize == sizeof(val)) {
158 val = IVAL(value.dptr, 0);
159 *(state->oldval) = val;
161 ret = NT_STATUS_UNSUCCESSFUL;
165 val += state->change_val;
167 SIVAL(&v_store, 0, val);
169 ret = dbwrap_record_store(rec,
170 make_tdb_data((const uint8 *)&v_store,
179 NTSTATUS dbwrap_change_uint32_atomic(struct db_context *db, const char *keystr,
180 uint32_t *oldval, uint32_t change_val)
183 struct dbwrap_change_uint32_atomic_context state;
185 state.keystr = keystr;
186 state.oldval = oldval;
187 state.change_val = change_val;
189 ret = dbwrap_change_uint32_atomic_action(db, &state);
194 NTSTATUS dbwrap_trans_change_uint32_atomic(struct db_context *db,
200 struct dbwrap_change_uint32_atomic_context state;
202 state.keystr = keystr;
203 state.oldval = oldval;
204 state.change_val = change_val;
206 ret = dbwrap_trans_do(db, dbwrap_change_uint32_atomic_action, &state);
212 * Atomic integer change (addition):
214 * if value does not exist yet in the db, use *oldval as initial old value.
215 * return old value in *oldval.
216 * store *oldval + change_val to db.
219 struct dbwrap_change_int32_atomic_context {
225 static NTSTATUS dbwrap_change_int32_atomic_action(struct db_context *db,
228 struct db_record *rec;
232 struct dbwrap_change_int32_atomic_context *state;
235 state = (struct dbwrap_change_int32_atomic_context *)private_data;
237 rec = dbwrap_fetch_locked(db, NULL, string_term_tdb_data(state->keystr));
239 return NT_STATUS_UNSUCCESSFUL;
242 value = dbwrap_record_get_value(rec);
244 if (value.dptr == NULL) {
245 val = *(state->oldval);
246 } else if (value.dsize == sizeof(val)) {
247 val = IVAL(value.dptr, 0);
248 *(state->oldval) = val;
250 ret = NT_STATUS_UNSUCCESSFUL;
254 val += state->change_val;
256 SIVAL(&v_store, 0, val);
258 ret = dbwrap_record_store(rec,
259 make_tdb_data((const uint8_t *)&v_store,
268 NTSTATUS dbwrap_change_int32_atomic(struct db_context *db, const char *keystr,
269 int32_t *oldval, int32_t change_val)
272 struct dbwrap_change_int32_atomic_context state;
274 state.keystr = keystr;
275 state.oldval = oldval;
276 state.change_val = change_val;
278 ret = dbwrap_change_int32_atomic_action(db, &state);
283 NTSTATUS dbwrap_trans_change_int32_atomic(struct db_context *db,
289 struct dbwrap_change_int32_atomic_context state;
291 state.keystr = keystr;
292 state.oldval = oldval;
293 state.change_val = change_val;
295 ret = dbwrap_trans_do(db, dbwrap_change_int32_atomic_action, &state);
300 struct dbwrap_store_context {
306 static NTSTATUS dbwrap_store_action(struct db_context *db, void *private_data)
308 struct db_record *rec = NULL;
310 struct dbwrap_store_context *store_ctx;
312 store_ctx = (struct dbwrap_store_context *)private_data;
314 rec = dbwrap_fetch_locked(db, talloc_tos(), *(store_ctx->key));
316 DEBUG(5, ("fetch_locked failed\n"));
317 return NT_STATUS_NO_MEMORY;
320 status = dbwrap_record_store(rec, *(store_ctx->dbuf), store_ctx->flag);
321 if (!NT_STATUS_IS_OK(status)) {
322 DEBUG(5, ("store returned %s\n", nt_errstr(status)));
329 NTSTATUS dbwrap_trans_store(struct db_context *db, TDB_DATA key, TDB_DATA dbuf,
333 struct dbwrap_store_context store_ctx;
335 store_ctx.key = &key;
336 store_ctx.dbuf = &dbuf;
337 store_ctx.flag = flag;
339 status = dbwrap_trans_do(db, dbwrap_store_action, &store_ctx);
344 static NTSTATUS dbwrap_delete_action(struct db_context * db, void *private_data)
347 struct db_record *rec;
348 TDB_DATA *key = (TDB_DATA *)private_data;
350 rec = dbwrap_fetch_locked(db, talloc_tos(), *key);
352 DEBUG(5, ("fetch_locked failed\n"));
353 return NT_STATUS_NO_MEMORY;
356 status = dbwrap_record_delete(rec);
357 if (!NT_STATUS_IS_OK(status)) {
358 DEBUG(5, ("delete_rec returned %s\n", nt_errstr(status)));
365 NTSTATUS dbwrap_trans_delete(struct db_context *db, TDB_DATA key)
369 status = dbwrap_trans_do(db, dbwrap_delete_action, &key);
374 NTSTATUS dbwrap_trans_store_int32(struct db_context *db, const char *keystr,
379 SIVAL(&v_store, 0, v);
381 return dbwrap_trans_store(db, string_term_tdb_data(keystr),
382 make_tdb_data((const uint8 *)&v_store,
387 NTSTATUS dbwrap_trans_store_uint32(struct db_context *db, const char *keystr,
392 SIVAL(&v_store, 0, v);
394 return dbwrap_trans_store(db, string_term_tdb_data(keystr),
395 make_tdb_data((const uint8 *)&v_store,
400 NTSTATUS dbwrap_trans_store_bystring(struct db_context *db, const char *key,
401 TDB_DATA data, int flags)
403 return dbwrap_trans_store(db, string_term_tdb_data(key), data, flags);
406 NTSTATUS dbwrap_trans_delete_bystring(struct db_context *db, const char *key)
408 return dbwrap_trans_delete(db, string_term_tdb_data(key));
412 * Wrap db action(s) into a transaction.
414 NTSTATUS dbwrap_trans_do(struct db_context *db,
415 NTSTATUS (*action)(struct db_context *, void *),
421 res = dbwrap_transaction_start(db);
423 DEBUG(5, ("transaction_start failed\n"));
424 return NT_STATUS_INTERNAL_DB_CORRUPTION;
427 status = action(db, private_data);
428 if (!NT_STATUS_IS_OK(status)) {
429 if (dbwrap_transaction_cancel(db) != 0) {
430 smb_panic("Cancelling transaction failed");
435 res = dbwrap_transaction_commit(db);
440 DEBUG(2, ("transaction_commit failed\n"));
441 return NT_STATUS_INTERNAL_DB_CORRUPTION;
444 struct dbwrap_trans_traverse_action_ctx {
445 int (*f)(struct db_record* rec, void* private_data);
450 static NTSTATUS dbwrap_trans_traverse_action(struct db_context* db, void* private_data)
452 struct dbwrap_trans_traverse_action_ctx* ctx =
453 (struct dbwrap_trans_traverse_action_ctx*)private_data;
455 NTSTATUS status = dbwrap_traverse(db, ctx->f, ctx->private_data, NULL);
460 NTSTATUS dbwrap_trans_traverse(struct db_context *db,
461 int (*f)(struct db_record*, void*),
464 struct dbwrap_trans_traverse_action_ctx ctx = {
466 .private_data = private_data,
468 return dbwrap_trans_do(db, dbwrap_trans_traverse_action, &ctx);
471 NTSTATUS dbwrap_delete_bystring(struct db_context *db, const char *key)
473 return dbwrap_delete(db, string_term_tdb_data(key));
476 NTSTATUS dbwrap_store_bystring(struct db_context *db, const char *key,
477 TDB_DATA data, int flags)
479 return dbwrap_store(db, string_term_tdb_data(key), data, flags);
482 NTSTATUS dbwrap_fetch_bystring(struct db_context *db, TALLOC_CTX *mem_ctx,
483 const char *key, TDB_DATA *value)
485 return dbwrap_fetch(db, mem_ctx, string_term_tdb_data(key), value);
490 NTSTATUS dbwrap_delete_bystring_upper(struct db_context *db, const char *key)
495 key_upper = talloc_strdup_upper(talloc_tos(), key);
496 if (key_upper == NULL) {
497 return NT_STATUS_NO_MEMORY;
500 status = dbwrap_delete_bystring(db, key_upper);
502 talloc_free(key_upper);
506 NTSTATUS dbwrap_store_bystring_upper(struct db_context *db, const char *key,
507 TDB_DATA data, int flags)
512 key_upper = talloc_strdup_upper(talloc_tos(), key);
513 if (key_upper == NULL) {
514 return NT_STATUS_NO_MEMORY;
517 status = dbwrap_store_bystring(db, key_upper, data, flags);
519 talloc_free(key_upper);
523 NTSTATUS dbwrap_fetch_bystring_upper(struct db_context *db, TALLOC_CTX *mem_ctx,
524 const char *key, TDB_DATA *value)
529 key_upper = talloc_strdup_upper(talloc_tos(), key);
530 if (key_upper == NULL) {
531 return NT_STATUS_NO_MEMORY;
534 status = dbwrap_fetch_bystring(db, mem_ctx, key_upper, value);
536 talloc_free(key_upper);