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https://github.com/samba-team/samba.git
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2c2379b321
TALLOC_FREE(rec) before transaction_cancel also in dbwrap_trans_delete().
Michael
(This used to be commit 04cd914a1f)
286 lines
6.2 KiB
C
286 lines
6.2 KiB
C
/*
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Unix SMB/CIFS implementation.
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Utility functions for the dbwrap API
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Copyright (C) Volker Lendecke 2007
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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int32_t dbwrap_fetch_int32(struct db_context *db, const char *keystr)
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{
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TDB_DATA dbuf;
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int32 ret;
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if (db->fetch(db, NULL, string_term_tdb_data(keystr), &dbuf) != 0) {
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return -1;
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}
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if ((dbuf.dptr == NULL) || (dbuf.dsize != sizeof(int32_t))) {
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TALLOC_FREE(dbuf.dptr);
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return -1;
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}
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ret = IVAL(dbuf.dptr, 0);
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TALLOC_FREE(dbuf.dptr);
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return ret;
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}
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int dbwrap_store_int32(struct db_context *db, const char *keystr, int32_t v)
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{
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struct db_record *rec;
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int32 v_store;
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NTSTATUS status;
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rec = db->fetch_locked(db, NULL, string_term_tdb_data(keystr));
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if (rec == NULL) {
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return -1;
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}
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SIVAL(&v_store, 0, v);
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status = rec->store(rec, make_tdb_data((const uint8 *)&v_store,
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sizeof(v_store)),
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TDB_REPLACE);
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TALLOC_FREE(rec);
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return NT_STATUS_IS_OK(status) ? 0 : -1;
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}
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bool dbwrap_fetch_uint32(struct db_context *db, const char *keystr,
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uint32_t *val)
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{
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TDB_DATA dbuf;
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if (db->fetch(db, NULL, string_term_tdb_data(keystr), &dbuf) != 0) {
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return false;
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}
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if ((dbuf.dptr == NULL) || (dbuf.dsize != sizeof(uint32_t))) {
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TALLOC_FREE(dbuf.dptr);
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return false;
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}
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*val = IVAL(dbuf.dptr, 0);
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TALLOC_FREE(dbuf.dptr);
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return true;
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}
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bool dbwrap_store_uint32(struct db_context *db, const char *keystr, uint32_t v)
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{
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struct db_record *rec;
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uint32 v_store;
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NTSTATUS status;
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rec = db->fetch_locked(db, NULL, string_term_tdb_data(keystr));
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if (rec == NULL) {
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return false;
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}
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SIVAL(&v_store, 0, v);
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status = rec->store(rec, make_tdb_data((const uint8 *)&v_store,
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sizeof(v_store)),
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TDB_REPLACE);
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TALLOC_FREE(rec);
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return NT_STATUS_IS_OK(status) ? 0 : -1;
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}
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uint32_t dbwrap_change_uint32_atomic(struct db_context *db, const char *keystr,
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uint32_t *oldval, uint32_t change_val)
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{
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struct db_record *rec;
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uint32 val = -1;
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TDB_DATA data;
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if (!(rec = db->fetch_locked(db, NULL,
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string_term_tdb_data(keystr)))) {
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return -1;
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}
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if ((rec->value.dptr != NULL)
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&& (rec->value.dsize == sizeof(val))) {
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val = IVAL(rec->value.dptr, 0);
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}
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val += change_val;
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data.dsize = sizeof(val);
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data.dptr = (uint8 *)&val;
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rec->store(rec, data, TDB_REPLACE);
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TALLOC_FREE(rec);
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return 0;
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}
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int32 dbwrap_change_int32_atomic(struct db_context *db, const char *keystr,
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int32 *oldval, int32 change_val)
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{
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struct db_record *rec;
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int32 val = -1;
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TDB_DATA data;
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if (!(rec = db->fetch_locked(db, NULL,
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string_term_tdb_data(keystr)))) {
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return -1;
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}
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if ((rec->value.dptr != NULL)
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&& (rec->value.dsize == sizeof(val))) {
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val = IVAL(rec->value.dptr, 0);
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}
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val += change_val;
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data.dsize = sizeof(val);
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data.dptr = (uint8 *)&val;
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rec->store(rec, data, TDB_REPLACE);
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TALLOC_FREE(rec);
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return 0;
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}
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NTSTATUS dbwrap_trans_store(struct db_context *db, TDB_DATA key, TDB_DATA dbuf,
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int flag)
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{
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int res;
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struct db_record *rec = NULL;
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NTSTATUS status;
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res = db->transaction_start(db);
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if (res != 0) {
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DEBUG(5, ("transaction_start failed\n"));
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return NT_STATUS_INTERNAL_DB_CORRUPTION;
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}
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rec = db->fetch_locked(db, talloc_tos(), key);
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if (rec == NULL) {
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DEBUG(5, ("fetch_locked failed\n"));
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status = NT_STATUS_NO_MEMORY;
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goto cancel;
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}
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status = rec->store(rec, dbuf, flag);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(5, ("store returned %s\n", nt_errstr(status)));
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goto cancel;
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}
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TALLOC_FREE(rec);
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res = db->transaction_commit(db);
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if (res != 0) {
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DEBUG(5, ("tdb_transaction_commit failed\n"));
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status = NT_STATUS_INTERNAL_DB_CORRUPTION;
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goto cancel;
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}
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return NT_STATUS_OK;
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cancel:
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TALLOC_FREE(rec);
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if (db->transaction_cancel(db) != 0) {
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smb_panic("Cancelling transaction failed");
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}
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return status;
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}
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NTSTATUS dbwrap_trans_delete(struct db_context *db, TDB_DATA key)
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{
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int res;
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struct db_record *rec = NULL;
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NTSTATUS status;
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res = db->transaction_start(db);
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if (res != 0) {
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DEBUG(5, ("transaction_start failed\n"));
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return NT_STATUS_INTERNAL_DB_CORRUPTION;
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}
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rec = db->fetch_locked(db, talloc_tos(), key);
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if (rec == NULL) {
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DEBUG(5, ("fetch_locked failed\n"));
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status = NT_STATUS_NO_MEMORY;
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goto cancel;
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}
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status = rec->delete_rec(rec);
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if (!NT_STATUS_IS_OK(status)) {
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DEBUG(5, ("delete_rec returned %s\n", nt_errstr(status)));
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goto cancel;
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}
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TALLOC_FREE(rec);
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res = db->transaction_commit(db);
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if (res != 0) {
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DEBUG(5, ("tdb_transaction_commit failed\n"));
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status = NT_STATUS_INTERNAL_DB_CORRUPTION;
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goto cancel;
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}
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return NT_STATUS_OK;
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cancel:
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TALLOC_FREE(rec);
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if (db->transaction_cancel(db) != 0) {
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smb_panic("Cancelling transaction failed");
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}
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return status;
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}
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NTSTATUS dbwrap_trans_store_int32(struct db_context *db, const char *keystr,
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int32_t v)
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{
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int32 v_store;
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SIVAL(&v_store, 0, v);
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return dbwrap_trans_store(db, string_term_tdb_data(keystr),
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make_tdb_data((const uint8 *)&v_store,
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sizeof(v_store)),
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TDB_REPLACE);
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}
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NTSTATUS dbwrap_trans_store_uint32(struct db_context *db, const char *keystr,
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uint32_t v)
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{
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uint32 v_store;
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SIVAL(&v_store, 0, v);
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return dbwrap_trans_store(db, string_term_tdb_data(keystr),
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make_tdb_data((const uint8 *)&v_store,
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sizeof(v_store)),
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TDB_REPLACE);
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}
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NTSTATUS dbwrap_trans_store_bystring(struct db_context *db, const char *key,
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TDB_DATA data, int flags)
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{
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return dbwrap_trans_store(db, string_term_tdb_data(key), data, flags);
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}
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NTSTATUS dbwrap_trans_delete_bystring(struct db_context *db, const char *key)
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{
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return dbwrap_trans_delete(db, string_term_tdb_data(key));
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}
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