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Reworked Inode to have a dirty bit and subclass-implemented flush_metadata().

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This way we can defer disk writes as long as we like. There's no automatic
flushing happening just yet.
This commit is contained in:
Andreas Kling 2018-12-19 21:56:45 +01:00
parent d506c857ab
commit 1f44cd9dd9
11 changed files with 82 additions and 58 deletions
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4
VirtualFileSystem/Ext2FileSystem.h
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@ -21,12 +21,13 @@ public:
bool is_symlink() const { return isSymbolicLink(m_raw_inode.i_mode); }
private:
// ^CoreInode
// ^Inode
virtual ssize_t read_bytes(Unix::off_t, size_t, byte* buffer, FileDescriptor*) override;
virtual void populate_metadata() const override;
virtual bool traverse_as_directory(Function<bool(const FS::DirectoryEntry&)>) override;
virtual InodeIdentifier lookup(const String& name) override;
virtual String reverse_lookup(InodeIdentifier) override;
virtual void flush_metadata() override;
void populate_lookup_cache();
@ -72,7 +73,6 @@ private:
virtual InodeIdentifier root_inode() const override;
virtual bool write_inode(InodeIdentifier, const ByteBuffer&) override;
virtual InodeMetadata inode_metadata(InodeIdentifier) const override;
virtual int set_atime_and_mtime(InodeIdentifier, dword atime, dword mtime) override;
virtual InodeIdentifier create_inode(InodeIdentifier parentInode, const String& name, Unix::mode_t, unsigned size, int& error) override;
virtual ssize_t read_inode_bytes(InodeIdentifier, Unix::off_t offset, size_t count, byte* buffer, FileDescriptor*) const override;
virtual InodeIdentifier create_directory(InodeIdentifier parentInode, const String& name, Unix::mode_t, int& error) override;