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/**
* @file
*
* @ingroup rtems_ramdisk
*
* @brief RAM disk block device implementation.
*/
/*
* Copyright (c) 2009-2012 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <rtems.h>
#include <rtems/ramdisk.h>
ramdisk *ramdisk_allocate(
void *area_begin,
uint32_t media_block_size,
rtems_blkdev_bnum media_block_count,
bool trace
)
{
struct ramdisk *rd = malloc(sizeof(struct ramdisk));
if (rd == NULL) {
return NULL;
}
if (area_begin == NULL) {
area_begin = calloc(media_block_count, media_block_size);
if (area_begin == NULL) {
free(rd);
return NULL;
}
rd->malloced = true;
} else {
rd->malloced = false;
}
rd->block_size = media_block_size;
rd->block_num = media_block_count;
rd->area = area_begin;
rd->trace = trace;
rd->initialized = true;
return rd;
}
void ramdisk_free(ramdisk *rd)
{
if (rd != NULL) {
if (rd->malloced) {
free(rd->area);
}
free(rd);
}
}
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