70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/*****************************************************************************
|
|
*
|
|
* Copyright (C) 2021 Florian Pose, Ingenieurgemeinschaft IgH
|
|
*
|
|
* This file is part of the IgH EtherCAT Master.
|
|
*
|
|
* The IgH EtherCAT Master is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License version 2, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* The IgH EtherCAT Master is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
|
|
* Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with the IgH EtherCAT Master; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
****************************************************************************/
|
|
|
|
/** \file
|
|
* Slave Configuration Feature Flag.
|
|
*/
|
|
|
|
/****************************************************************************/
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include "flag.h"
|
|
|
|
/****************************************************************************/
|
|
|
|
/** SDO request constructor.
|
|
*/
|
|
int ec_flag_init(
|
|
ec_flag_t *flag, /**< Feature flag. */
|
|
const char *key, /**< Feature key. */
|
|
int32_t value /**< Feature value. */
|
|
)
|
|
{
|
|
if (!key || strlen(key) == 0) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!(flag->key = (uint8_t *) kmalloc(strlen(key) + 1, GFP_KERNEL))) {
|
|
return -ENOMEM;
|
|
}
|
|
|
|
strcpy(flag->key, key); // no strncpy, buffer is alloc'ed with strlen
|
|
flag->value = value;
|
|
return 0;
|
|
}
|
|
|
|
/****************************************************************************/
|
|
|
|
/** SDO request destructor.
|
|
*/
|
|
void ec_flag_clear(
|
|
ec_flag_t *flag /**< Feature flag. */
|
|
)
|
|
{
|
|
if (flag->key) {
|
|
kfree(flag->key);
|
|
flag->key = NULL;
|
|
}
|
|
}
|
|
|
|
/****************************************************************************/
|