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Kernel: Add Device base class for CharacterDevice.

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..to prepare for adding a BlockDevice class.
This commit is contained in:
Andreas Kling 2019-02-16 00:47:20 +01:00
parent c6ca6522fc
commit 994279d56c
11 changed files with 113 additions and 94 deletions
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10
Kernel/FileDescriptor.h
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@ -18,7 +18,7 @@ public:
static RetainPtr<FileDescriptor> create(RetainPtr<Socket>&&, SocketRole = SocketRole::None);
static RetainPtr<FileDescriptor> create(RetainPtr<Inode>&&);
static RetainPtr<FileDescriptor> create(RetainPtr<CharacterDevice>&&);
static RetainPtr<FileDescriptor> create(RetainPtr<Device>&&);
static RetainPtr<FileDescriptor> create_pipe_writer(FIFO&);
static RetainPtr<FileDescriptor> create_pipe_reader(FIFO&);
~FileDescriptor();
@ -44,8 +44,8 @@ public:
bool is_directory() const;
bool is_character_device() const { return m_device.ptr(); }
CharacterDevice* character_device() { return m_device.ptr(); }
const CharacterDevice* character_device() const { return m_device.ptr(); }
Device* character_device() { return m_device.ptr(); }
const Device* character_device() const { return m_device.ptr(); }
bool is_tty() const;
const TTY* tty() const;
@ -84,11 +84,11 @@ private:
friend class VFS;
FileDescriptor(RetainPtr<Socket>&&, SocketRole);
explicit FileDescriptor(RetainPtr<Inode>&&);
explicit FileDescriptor(RetainPtr<CharacterDevice>&&);
explicit FileDescriptor(RetainPtr<Device>&&);
FileDescriptor(FIFO&, FIFO::Direction);
RetainPtr<Inode> m_inode;
RetainPtr<CharacterDevice> m_device;
RetainPtr<Device> m_device;
off_t m_current_offset { 0 };