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d_opendb.c
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d_opendb.c
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/*!
* \file db/dbmi_driver/d_opendb.c
*
* \brief DBMI Library (driver) - open database connection
*
* (C) 1999-2008 by the GRASS Development Team
*
* This program is free software under the GNU General Public
* License (>=v2). Read the file COPYING that comes with GRASS
* for details.
*
* \author Joel Jones (CERL/UIUC), Radim Blazek
*/
#include <stdlib.h>
#include <grass/dbmi.h>
#include "macros.h"
#include "dbstubs.h"
/*!
\brief Open database connection
\return DB_OK on success
\return DB_FAILED on failure
*/
int db_d_open_database(void)
{
dbHandle handle;
int stat;
/* get the arg(s) */
db_init_handle(&handle);
DB_RECV_HANDLE(&handle);
/* see if there is a database already open */
if (db__test_database_open()) {
db_error("Multiple open databases not allowed");
DB_SEND_FAILURE();
return DB_OK;
}
/* call the procedure */
stat = db_driver_open_database(&handle);
/* send the return code */
if (stat != DB_OK) {
db_free_handle(&handle);
DB_SEND_FAILURE();
return DB_OK;
}
DB_SEND_SUCCESS();
/* record the open in the driver state */
db__mark_database_open(db_get_handle_dbname(&handle),
db_get_handle_dbschema(&handle));
/* DO NOT free the handle since we saved the pointers to the name,path */
/* no results */
return DB_OK;
}