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More work on CoreInode.

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This commit is contained in:
Andreas Kling 2018-11-13 23:44:54 +01:00
parent 26852a8363
commit c735c56e4c
13 changed files with 342 additions and 172 deletions
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70
VirtualFileSystem/FileSystem.h
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@ -16,37 +16,8 @@
static const dword mepoch = 476763780;
class CoreInode;
class FileDescriptor;
class FileSystem;
class CoreInode : public Retainable<CoreInode> {
public:
virtual ~CoreInode();
FileSystem& fs() { return m_fs; }
const FileSystem& fs() const { return m_fs; }
unsigned fsid() const;
unsigned index() const { return m_index; }
InodeIdentifier identifier() const { return { fsid(), index() }; }
const InodeMetadata& metadata() const { if (!m_metadata.isValid()) { populate_metadata(); } return m_metadata; }
virtual Unix::ssize_t read_bytes(Unix::off_t, Unix::size_t, byte* buffer, FileDescriptor*) = 0;
protected:
CoreInode(FileSystem& fs, unsigned index)
: m_fs(fs)
, m_index(index)
{
}
virtual void populate_metadata() const = 0;
mutable InodeMetadata m_metadata;
private:
FileSystem& m_fs;
unsigned m_index { 0 };
};
class FileSystem : public Retainable<FileSystem> {
public:
@ -80,7 +51,7 @@ public:
virtual InodeIdentifier findParentOfInode(InodeIdentifier) const = 0;
virtual RetainPtr<CoreInode> get_inode(InodeIdentifier) = 0;
virtual RetainPtr<CoreInode> get_inode(InodeIdentifier) const = 0;
InodeIdentifier childOfDirectoryInodeWithName(InodeIdentifier, const String& name) const;
ByteBuffer readEntireInode(InodeIdentifier, FileDescriptor* = nullptr) const;
@ -93,6 +64,43 @@ private:
dword m_id { 0 };
};
class CoreInode : public Retainable<CoreInode> {
friend class VirtualFileSystem;
public:
virtual ~CoreInode();
FileSystem& fs() { return m_fs; }
const FileSystem& fs() const { return m_fs; }
unsigned fsid() const;
unsigned index() const { return m_index; }
size_t size() const { return metadata().size; }
bool is_symlink() const { return metadata().isSymbolicLink(); }
bool is_directory() const { return metadata().isDirectory(); }
InodeIdentifier identifier() const { return { fsid(), index() }; }
const InodeMetadata& metadata() const { if (!m_metadata.isValid()) { populate_metadata(); } return m_metadata; }
virtual Unix::ssize_t read_bytes(Unix::off_t, Unix::size_t, byte* buffer, FileDescriptor*) = 0;
virtual bool traverse_as_directory(Function<bool(const FileSystem::DirectoryEntry&)>) = 0;
ByteBuffer read_entire(FileDescriptor* = nullptr);
protected:
CoreInode(FileSystem& fs, unsigned index)
: m_fs(fs)
, m_index(index)
{
}
virtual void populate_metadata() const = 0;
mutable InodeMetadata m_metadata;
private:
FileSystem& m_fs;
unsigned m_index { 0 };
};
inline FileSystem* InodeIdentifier::fileSystem()
{
return FileSystem::fromID(m_fileSystemID);