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93 lines
3 KiB
C
93 lines
3 KiB
C
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#pragma once
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#include <AK/Retainable.h>
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#include <AK/AKString.h>
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#include <AK/Function.h>
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#include <AK/WeakPtr.h>
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#include <Kernel/FileSystem/InodeIdentifier.h>
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#include <Kernel/FileSystem/InodeMetadata.h>
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#include <Kernel/FileSystem/FileSystem.h>
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#include <Kernel/KResult.h>
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#include <Kernel/Lock.h>
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class FileDescriptor;
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class LocalSocket;
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class VMObject;
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class Inode : public Retainable<Inode> {
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friend class VFS;
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friend class FS;
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public:
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virtual ~Inode();
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virtual void one_retain_left() { }
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FS& fs() { return m_fs; }
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const FS& fs() const { return m_fs; }
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unsigned fsid() const;
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unsigned index() const { return m_index; }
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size_t size() const { return metadata().size; }
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bool is_symlink() const { return metadata().is_symlink(); }
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bool is_directory() const { return metadata().is_directory(); }
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bool is_character_device() const { return metadata().is_character_device(); }
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mode_t mode() const { return metadata().mode; }
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InodeIdentifier identifier() const { return { fsid(), index() }; }
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virtual InodeMetadata metadata() const = 0;
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ByteBuffer read_entire(FileDescriptor* = nullptr) const;
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virtual ssize_t read_bytes(off_t, ssize_t, byte* buffer, FileDescriptor*) const = 0;
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virtual bool traverse_as_directory(Function<bool(const FS::DirectoryEntry&)>) const = 0;
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virtual InodeIdentifier lookup(const String& name) = 0;
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virtual String reverse_lookup(InodeIdentifier) = 0;
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virtual ssize_t write_bytes(off_t, ssize_t, const byte* data, FileDescriptor*) = 0;
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virtual KResult add_child(InodeIdentifier child_id, const String& name, byte file_type) = 0;
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virtual KResult remove_child(const String& name) = 0;
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virtual RetainPtr<Inode> parent() const = 0;
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virtual size_t directory_entry_count() const = 0;
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virtual KResult chmod(mode_t) = 0;
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virtual KResult chown(uid_t, gid_t) = 0;
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virtual KResult truncate(off_t) { return KSuccess; }
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LocalSocket* socket() { return m_socket.ptr(); }
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const LocalSocket* socket() const { return m_socket.ptr(); }
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bool bind_socket(LocalSocket&);
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bool unbind_socket();
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bool is_metadata_dirty() const { return m_metadata_dirty; }
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virtual int set_atime(time_t);
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virtual int set_ctime(time_t);
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virtual int set_mtime(time_t);
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virtual int increment_link_count();
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virtual int decrement_link_count();
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virtual void flush_metadata() = 0;
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void will_be_destroyed();
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void set_vmo(VMObject&);
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VMObject* vmo() { return m_vmo.ptr(); }
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const VMObject* vmo() const { return m_vmo.ptr(); }
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static void sync();
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protected:
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Inode(FS& fs, unsigned index);
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void set_metadata_dirty(bool b) { m_metadata_dirty = b; }
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void inode_contents_changed(off_t, ssize_t, const byte*);
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void inode_size_changed(size_t old_size, size_t new_size);
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mutable Lock m_lock { "Inode" };
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private:
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FS& m_fs;
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unsigned m_index { 0 };
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WeakPtr<VMObject> m_vmo;
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RetainPtr<LocalSocket> m_socket;
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bool m_metadata_dirty { false };
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};
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