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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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44
VirtualFileSystem/SyntheticFileSystem.h
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@ -4,6 +4,8 @@
#include "UnixTypes.h"
#include <AK/HashMap.h>
class SynthFSInode;
class SyntheticFileSystem : public FileSystem {
public:
virtual ~SyntheticFileSystem() override;
@ -20,7 +22,7 @@ public:
virtual Unix::ssize_t readInodeBytes(InodeIdentifier, Unix::off_t offset, Unix::size_t count, byte* buffer, FileDescriptor*) const override;
virtual InodeIdentifier makeDirectory(InodeIdentifier parentInode, const String& name, Unix::mode_t) override;
virtual InodeIdentifier findParentOfInode(InodeIdentifier) const override;
virtual RetainPtr<CoreInode> get_inode(InodeIdentifier) override;
virtual RetainPtr<CoreInode> get_inode(InodeIdentifier) const override;
protected:
typedef unsigned InodeIndex;
@ -30,24 +32,36 @@ protected:
SyntheticFileSystem();
struct File {
String name;
InodeMetadata metadata;
InodeIdentifier parent;
ByteBuffer data;
Function<ByteBuffer()> generator;
Vector<File*> children;
};
RetainPtr<SynthFSInode> create_directory(String&& name);
RetainPtr<SynthFSInode> create_text_file(String&& name, ByteBuffer&&, Unix::mode_t = 0010644);
RetainPtr<SynthFSInode> create_generated_file(String&& name, Function<ByteBuffer()>&&, Unix::mode_t = 0100644);
OwnPtr<File> createDirectory(String&& name);
OwnPtr<File> createTextFile(String&& name, ByteBuffer&&, Unix::mode_t = 0010644);
OwnPtr<File> createGeneratedFile(String&& name, Function<ByteBuffer()>&&, Unix::mode_t = 0100644);
InodeIdentifier addFile(OwnPtr<File>&&, InodeIndex parent = RootInodeIndex);
InodeIdentifier addFile(RetainPtr<SynthFSInode>&&, InodeIndex parent = RootInodeIndex);
bool removeFile(InodeIndex);
private:
InodeIndex m_nextInodeIndex { 2 };
HashMap<InodeIndex, OwnPtr<File>> m_inodes;
HashMap<InodeIndex, RetainPtr<SynthFSInode>> m_inodes;
};
class SynthFSInode final : public CoreInode {
friend class SyntheticFileSystem;
public:
virtual ~SynthFSInode() override;
private:
// ^CoreInode
virtual Unix::ssize_t read_bytes(Unix::off_t, Unix::size_t, byte* buffer, FileDescriptor*) override;
virtual void populate_metadata() const override;
virtual bool traverse_as_directory(Function<bool(const FileSystem::DirectoryEntry&)>) override;
SyntheticFileSystem& fs();
const SyntheticFileSystem& fs() const;
SynthFSInode(SyntheticFileSystem&, unsigned index);
String m_name;
InodeIdentifier m_parent;
ByteBuffer m_data;
Function<ByteBuffer()> m_generator;
Vector<SynthFSInode*> m_children;
};