mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-13 01:59:14 +03:00
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <Kernel/FileSystem/FileBackedFileSystem.h>
|
|
#include <Kernel/Locking/MutexProtected.h>
|
|
|
|
namespace Kernel {
|
|
|
|
class BlockBasedFileSystem : public FileBackedFileSystem {
|
|
public:
|
|
AK_TYPEDEF_DISTINCT_ORDERED_ID(u64, BlockIndex);
|
|
|
|
virtual ~BlockBasedFileSystem() override;
|
|
|
|
u64 device_block_size() const { return m_device_block_size; }
|
|
|
|
virtual ErrorOr<void> flush_writes() override;
|
|
void flush_writes_impl();
|
|
|
|
protected:
|
|
explicit BlockBasedFileSystem(OpenFileDescription&);
|
|
|
|
virtual ErrorOr<void> initialize_while_locked() override;
|
|
|
|
ErrorOr<void> read_block(BlockIndex, UserOrKernelBuffer*, size_t count, u64 offset = 0, bool allow_cache = true) const;
|
|
ErrorOr<void> read_blocks(BlockIndex, unsigned count, UserOrKernelBuffer&, bool allow_cache = true) const;
|
|
|
|
ErrorOr<void> raw_read(BlockIndex, UserOrKernelBuffer&);
|
|
ErrorOr<void> raw_write(BlockIndex, UserOrKernelBuffer const&);
|
|
|
|
ErrorOr<void> raw_read_blocks(BlockIndex index, size_t count, UserOrKernelBuffer&);
|
|
ErrorOr<void> raw_write_blocks(BlockIndex index, size_t count, UserOrKernelBuffer const&);
|
|
|
|
ErrorOr<void> write_block(BlockIndex, UserOrKernelBuffer const&, size_t count, u64 offset = 0, bool allow_cache = true);
|
|
ErrorOr<void> write_blocks(BlockIndex, unsigned count, UserOrKernelBuffer const&, bool allow_cache = true);
|
|
|
|
u64 m_device_block_size { 512 };
|
|
|
|
void remove_disk_cache_before_last_unmount();
|
|
|
|
private:
|
|
void flush_specific_block_if_needed(BlockIndex index);
|
|
|
|
mutable MutexProtected<OwnPtr<DiskCache>> m_cache;
|
|
};
|
|
|
|
}
|