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43ce6c5474
This is more logical and allows us to solve the problem of non-blocking TCP sockets getting stuck in SocketRole::None. The only complication is that a single LocalSocket may be shared between two file descriptions (on the connect and accept sides), and should have two different roles depending from which side you look at it. To deal with it, Socket::role() is made a virtual method that accepts a file description, and LocalSocket internally tracks which FileDescription is the which one and returns a correct role.
120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
#pragma once
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#include <AK/Badge.h>
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#include <AK/ByteBuffer.h>
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#include <AK/CircularQueue.h>
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#include <AK/RefCounted.h>
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#include <Kernel/FileSystem/FIFO.h>
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#include <Kernel/FileSystem/Inode.h>
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#include <Kernel/FileSystem/InodeMetadata.h>
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#include <Kernel/FileSystem/VirtualFileSystem.h>
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#include <Kernel/KBuffer.h>
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#include <Kernel/Net/Socket.h>
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#include <Kernel/VM/VirtualAddress.h>
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class File;
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class TTY;
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class MasterPTY;
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class Process;
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class Region;
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class CharacterDevice;
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class SharedMemory;
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class FileDescription : public RefCounted<FileDescription> {
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public:
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static NonnullRefPtr<FileDescription> create(Custody&);
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static NonnullRefPtr<FileDescription> create(File&);
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~FileDescription();
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int close();
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off_t seek(off_t, int whence);
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ssize_t read(u8*, ssize_t);
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ssize_t write(const u8* data, ssize_t);
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KResult fstat(stat&);
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KResult fchmod(mode_t);
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bool can_read() const;
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bool can_write() const;
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ssize_t get_dir_entries(u8* buffer, ssize_t);
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ByteBuffer read_entire_file();
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String absolute_path() const;
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bool is_directory() const;
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File& file() { return *m_file; }
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const File& file() const { return *m_file; }
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bool is_device() const;
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bool is_tty() const;
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const TTY* tty() const;
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TTY* tty();
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bool is_master_pty() const;
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const MasterPTY* master_pty() const;
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MasterPTY* master_pty();
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InodeMetadata metadata() const;
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Inode* inode() { return m_inode.ptr(); }
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const Inode* inode() const { return m_inode.ptr(); }
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Custody* custody() { return m_custody.ptr(); }
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const Custody* custody() const { return m_custody.ptr(); }
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KResultOr<Region*> mmap(Process&, VirtualAddress, size_t offset, size_t, int prot);
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bool is_blocking() const { return m_is_blocking; }
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void set_blocking(bool b) { m_is_blocking = b; }
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bool should_append() const { return m_should_append; }
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void set_should_append(bool s) { m_should_append = s; }
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u32 file_flags() const { return m_file_flags; }
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void set_file_flags(u32);
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bool is_socket() const;
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Socket* socket();
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const Socket* socket() const;
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bool is_fifo() const;
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FIFO* fifo();
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FIFO::Direction fifo_direction() { return m_fifo_direction; }
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void set_fifo_direction(Badge<FIFO>, FIFO::Direction direction) { m_fifo_direction = direction; }
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bool is_shared_memory() const;
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SharedMemory* shared_memory();
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const SharedMemory* shared_memory() const;
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Optional<KBuffer>& generator_cache() { return m_generator_cache; }
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void set_original_inode(Badge<VFS>, NonnullRefPtr<Inode>&& inode) { m_inode = move(inode); }
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KResult truncate(off_t);
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off_t offset() const { return m_current_offset; }
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KResult chown(uid_t, gid_t);
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private:
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friend class VFS;
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explicit FileDescription(File&);
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FileDescription(FIFO&, FIFO::Direction);
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RefPtr<Custody> m_custody;
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RefPtr<Inode> m_inode;
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NonnullRefPtr<File> m_file;
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off_t m_current_offset { 0 };
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Optional<KBuffer> m_generator_cache;
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u32 m_file_flags { 0 };
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bool m_is_blocking { true };
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bool m_should_append { false };
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FIFO::Direction m_fifo_direction { FIFO::Direction::Neither };
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};
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