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LibPartition: Migrate from DeprecatedFile to File

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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.
This commit is contained in:
Ben Wiederhake 2023-05-21 20:33:09 +02:00 • committed by Jelle Raaijmakers
parent c197fb4037
commit 3d6b838df3
14 changed files with 221 additions and 177 deletions
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15
Userland/Libraries/LibPartition/MBRPartitionTable.h
View file

@ -38,17 +38,10 @@ public:
public:
~MBRPartitionTable();
#ifdef KERNEL
static ErrorOr<NonnullOwnPtr<MBRPartitionTable>> try_to_initialize(Kernel::StorageDevice&);
static OwnPtr<MBRPartitionTable> try_to_initialize(Kernel::StorageDevice&, u32 start_lba);
explicit MBRPartitionTable(Kernel::StorageDevice&);
MBRPartitionTable(Kernel::StorageDevice&, u32 start_lba);
#else
static ErrorOr<NonnullOwnPtr<MBRPartitionTable>> try_to_initialize(NonnullRefPtr<Core::DeprecatedFile>);
static OwnPtr<MBRPartitionTable> try_to_initialize(NonnullRefPtr<Core::DeprecatedFile>, u32 start_lba);
explicit MBRPartitionTable(NonnullRefPtr<Core::DeprecatedFile>);
MBRPartitionTable(NonnullRefPtr<Core::DeprecatedFile>, u32 start_lba);
#endif
static ErrorOr<NonnullOwnPtr<MBRPartitionTable>> try_to_initialize(PartitionableDevice);
static OwnPtr<MBRPartitionTable> try_to_initialize(PartitionableDevice, u32 start_lba);
explicit MBRPartitionTable(PartitionableDevice);
MBRPartitionTable(PartitionableDevice, u32 start_lba);
bool is_protective_mbr() const;
bool contains_ebr() const;