mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 21:42:43 +00:00
65 lines
2.4 KiB
C++
65 lines
2.4 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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 <Kernel/Devices/BlockDevice.h>
|
|
|
|
namespace Kernel {
|
|
|
|
BlockDevice::~BlockDevice()
|
|
{
|
|
}
|
|
|
|
bool BlockDevice::read_block(unsigned index, u8* buffer) const
|
|
{
|
|
return const_cast<BlockDevice*>(this)->read_blocks(index, 1, buffer);
|
|
}
|
|
|
|
bool BlockDevice::write_block(unsigned index, const u8* data)
|
|
{
|
|
return write_blocks(index, 1, data);
|
|
}
|
|
|
|
bool BlockDevice::read_raw(u32 offset, unsigned length, u8* out) const
|
|
{
|
|
ASSERT((offset % block_size()) == 0);
|
|
ASSERT((length % block_size()) == 0);
|
|
u32 first_block = offset / block_size();
|
|
u32 end_block = (offset + length) / block_size();
|
|
return const_cast<BlockDevice*>(this)->read_blocks(first_block, end_block - first_block, out);
|
|
}
|
|
|
|
bool BlockDevice::write_raw(u32 offset, unsigned length, const u8* in)
|
|
{
|
|
ASSERT((offset % block_size()) == 0);
|
|
ASSERT((length % block_size()) == 0);
|
|
u32 first_block = offset / block_size();
|
|
u32 end_block = (offset + length) / block_size();
|
|
ASSERT(first_block <= 0xffffffff);
|
|
ASSERT(end_block <= 0xffffffff);
|
|
return write_blocks(first_block, end_block - first_block, in);
|
|
}
|
|
|
|
}
|