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Kernel: Virtualize the File::stat() operation

Instead of FileDescriptor branching on the type of File it's wrapping,
add a File::stat() function that can be overridden to provide custom
behavior for the stat syscalls.
This commit is contained in:
Andreas Kling 2020-09-06 18:31:51 +02:00
parent 5444cabd39
commit 22831033d0
6 changed files with 28 additions and 20 deletions

View file

@ -58,9 +58,9 @@ public:
bool is_shut_down_for_reading() const { return m_shut_down_for_reading; }
enum class SetupState {
Unstarted, // we haven't tried to set the socket up yet
Unstarted, // we haven't tried to set the socket up yet
InProgress, // we're in the process of setting things up - for TCP maybe we've sent a SYN packet
Completed, // the setup process is complete, but not necessarily successful
Completed, // the setup process is complete, but not necessarily successful
};
enum class Role : u8 {
@ -126,6 +126,7 @@ public:
// ^File
virtual KResultOr<size_t> read(FileDescription&, size_t, u8*, size_t) override final;
virtual KResultOr<size_t> write(FileDescription&, size_t, const u8*, size_t) override final;
virtual KResult stat(::stat&) const override;
virtual String absolute_path(const FileDescription&) const override = 0;
bool has_receive_timeout() const { return m_receive_timeout.tv_sec || m_receive_timeout.tv_usec; }
@ -144,8 +145,8 @@ protected:
virtual const char* class_name() const override { return "Socket"; }
virtual void shut_down_for_reading() {}
virtual void shut_down_for_writing() {}
virtual void shut_down_for_reading() { }
virtual void shut_down_for_writing() { }
Role m_role { Role::None };
@ -175,10 +176,10 @@ private:
NonnullRefPtrVector<Socket> m_pending;
};
template <typename SocketType>
template<typename SocketType>
class SocketHandle {
public:
SocketHandle() {}
SocketHandle() { }
SocketHandle(NonnullRefPtr<SocketType>&& socket)
: m_socket(move(socket))