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/* ``Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* The Initial Developer of the Original Code is Ericsson Utvecklings AB.
* Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
* AB. All Rights Reserved.''
*
* $Id$
*/
#include <stdio.h>
#include <string.h>
#include "erl_driver.h"
static ErlDrvSSizeT call(ErlDrvData drv_data,
unsigned int command,
char *buf, ErlDrvSizeT len,
char **rbuf, ErlDrvSizeT rlen,
unsigned int *flags);
static ErlDrvEntry otp_6879_drv_entry = {
NULL /* init */,
NULL /* start */,
NULL /* stop */,
NULL /* output */,
NULL /* ready_input */,
NULL /* ready_output */,
"otp_6879_drv",
NULL /* finish */,
NULL /* handle */,
NULL /* control */,
NULL /* timeout */,
NULL /* outputv */,
NULL /* ready_async */,
NULL /* flush */,
call,
NULL /* event */,
ERL_DRV_EXTENDED_MARKER,
ERL_DRV_EXTENDED_MAJOR_VERSION,
ERL_DRV_EXTENDED_MINOR_VERSION,
ERL_DRV_FLAG_USE_PORT_LOCKING,
NULL /* handle2 */,
NULL /* handle_monitor */
};
DRIVER_INIT(otp_6879_drv)
{
return &otp_6879_drv_entry;
}
static ErlDrvSSizeT call(ErlDrvData drv_data,
unsigned int command,
char *buf, ErlDrvSizeT len,
char **rbuf, ErlDrvSizeT rlen,
unsigned int *flags)
{
/* echo call */
if (len > rlen)
*rbuf = driver_alloc(len);
memcpy((void *) *rbuf, (void *) buf, len);
return len;
}
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