mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 01:02:45 +00:00
3d6b838df3
The implemented cloning mechanism should be sound: - If a PartitionTable is passed a File with ShouldCloseFileDescriptor::Yes, then it will keep it alive until the PartitionTable is destroyed. - If a PartitionTable is passed a File with ShouldCloseFileDescriptor::No, then the caller has to ensure that the file descriptor remains alive. If the caller is EBRPartitionTable, the same consideration holds. If the caller is PartitionEditor::PartitionModel, this is satisfied by keeping an OwnPtr<Core::File> around which is the originally opened file. Therefore, we never leak any fds, and never access a Core::File or fd after destroying it.
54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
/*
|
|
* Copyright (c) 2023, Ben Wiederhake <BenWiederhake.GitHub@gmx.de>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Noncopyable.h>
|
|
|
|
#ifdef KERNEL
|
|
# include <Kernel/Devices/Storage/StorageDevice.h>
|
|
#else
|
|
# include <AK/MaybeOwned.h>
|
|
# include <LibCore/File.h>
|
|
#endif
|
|
|
|
namespace Partition {
|
|
|
|
class PartitionableDevice {
|
|
AK_MAKE_NONCOPYABLE(PartitionableDevice);
|
|
|
|
public:
|
|
#ifdef KERNEL
|
|
PartitionableDevice(Kernel::StorageDevice&);
|
|
// Userland doesn't get an implicit constructor.
|
|
#endif
|
|
PartitionableDevice(PartitionableDevice&&) = default;
|
|
// Unused, and "move out of reference" isn't well-defined anyway:
|
|
PartitionableDevice& operator=(PartitionableDevice&&) = delete;
|
|
|
|
#ifdef KERNEL
|
|
static ErrorOr<PartitionableDevice> create(Kernel::StorageDevice& device);
|
|
#else
|
|
static ErrorOr<PartitionableDevice> create(MaybeOwned<Core::File> device_file);
|
|
#endif
|
|
~PartitionableDevice() = default;
|
|
|
|
PartitionableDevice clone_unowned();
|
|
ErrorOr<PartitionableDevice> clone_owned();
|
|
size_t block_size() const;
|
|
ErrorOr<void> read_block(size_t block_index, Bytes block_buffer);
|
|
|
|
private:
|
|
#ifdef KERNEL
|
|
Kernel::StorageDevice& m_device;
|
|
#else
|
|
explicit PartitionableDevice(MaybeOwned<Core::File>, size_t block_size);
|
|
MaybeOwned<Core::File> m_device_file;
|
|
size_t m_block_size;
|
|
#endif
|
|
};
|
|
|
|
}
|