ref: d50817eb368e41137c872ddc02b3653c3209f8d9
dir: /blockdev/blockdev.c/
/*
* Copyright (c) 2015 Grzegorz Kostka (kostka.grzegorz@gmail.com)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <ext4_config.h>
#include <ext4_blockdev.h>
#include <ext4_errno.h>
/**********************BLOCKDEV INTERFACE**************************************/
static int blockdev_open(struct ext4_blockdev *bdev);
static int blockdev_bread(struct ext4_blockdev *bdev, void *buf, uint64_t blk_id,
uint32_t blk_cnt);
static int blockdev_bwrite(struct ext4_blockdev *bdev, const void *buf,
uint64_t blk_id, uint32_t blk_cnt);
static int blockdev_close(struct ext4_blockdev *bdev);
static int blockdev_lock(struct ext4_blockdev *bdev);
static int blockdev_unlock(struct ext4_blockdev *bdev);
/******************************************************************************/
EXT4_BLOCKDEV_STATIC_INSTANCE(blockdev, 512, 0, blockdev_open,
blockdev_bread, blockdev_bwrite, blockdev_close,
blockdev_lock, blockdev_unlock);
/******************************************************************************/
static int blockdev_open(struct ext4_blockdev *bdev)
{
/*blockdev_open: skeleton*/
return EIO;
}
/******************************************************************************/
static int blockdev_bread(struct ext4_blockdev *bdev, void *buf, uint64_t blk_id,
uint32_t blk_cnt)
{
/*blockdev_bread: skeleton*/
return EIO;
}
/******************************************************************************/
static int blockdev_bwrite(struct ext4_blockdev *bdev, const void *buf,
uint64_t blk_id, uint32_t blk_cnt)
{
/*blockdev_bwrite: skeleton*/
return EIO;
}
/******************************************************************************/
static int blockdev_close(struct ext4_blockdev *bdev)
{
/*blockdev_close: skeleton*/
return EIO;
}
static int blockdev_lock(struct ext4_blockdev *bdev)
{
/*blockdev_lock: skeleton*/
return EIO;
}
static int blockdev_unlock(struct ext4_blockdev *bdev)
{
/*blockdev_unlock: skeleton*/
return EIO;
}
/******************************************************************************/
struct ext4_blockdev *ext4_blockdev_get(void)
{
return &blockdev;
}
/******************************************************************************/