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73fdbba59c
This was a workaround to be able to build on case-insensitive file systems where it might get confused about <string.h> vs <String.h>. Let's just not support building that way, so String.h can have an objectively nicer name. :^)
103 lines
3.2 KiB
C++
103 lines
3.2 KiB
C++
#pragma once
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#include <AK/String.h>
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#include <AK/Function.h>
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#include <AK/InlineLinkedList.h>
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#include <AK/RefCounted.h>
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#include <AK/WeakPtr.h>
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#include <Kernel/FileSystem/FileSystem.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/KResult.h>
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#include <Kernel/Lock.h>
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class FileDescription;
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class InodeVMObject;
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class InodeWatcher;
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class LocalSocket;
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class Inode : public RefCounted<Inode>
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, public Weakable<Inode>
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, public InlineLinkedListNode<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_ref_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(FileDescription* = nullptr) const;
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virtual ssize_t read_bytes(off_t, ssize_t, u8* buffer, FileDescription*) 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(StringView name) = 0;
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virtual ssize_t write_bytes(off_t, ssize_t, const u8* data, FileDescription*) = 0;
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virtual KResult add_child(InodeIdentifier child_id, const StringView& name, mode_t) = 0;
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virtual KResult remove_child(const StringView& name) = 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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InodeVMObject* vmobject() { return m_vmobject.ptr(); }
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const InodeVMObject* vmobject() const { return m_vmobject.ptr(); }
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static void sync();
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void register_watcher(Badge<InodeWatcher>, InodeWatcher&);
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void unregister_watcher(Badge<InodeWatcher>, InodeWatcher&);
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// For InlineLinkedListNode.
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Inode* m_next { nullptr };
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Inode* m_prev { nullptr };
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protected:
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Inode(FS& fs, unsigned index);
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void set_metadata_dirty(bool);
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void inode_contents_changed(off_t, ssize_t, const u8*);
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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<InodeVMObject> m_vmobject;
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RefPtr<LocalSocket> m_socket;
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HashTable<InodeWatcher*> m_watchers;
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bool m_metadata_dirty { false };
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};
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