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Implement creating a new directory.

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This commit is contained in:
Andreas Kling 2018-10-16 00:35:03 +02:00
parent 5c50d02c2e
commit f608629704
9 changed files with 224 additions and 20 deletions
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17
VirtualFileSystem/Ext2FileSystem.h
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@ -15,6 +15,10 @@ public:
virtual ~Ext2FileSystem() override;
private:
typedef unsigned BlockIndex;
typedef unsigned GroupIndex;
typedef unsigned InodeIndex;
explicit Ext2FileSystem(RetainPtr<BlockDevice>);
const ext2_super_block& superBlock() const;
@ -39,11 +43,13 @@ private:
virtual bool enumerateDirectoryInode(InodeIdentifier, std::function<bool(const DirectoryEntry&)>) const override;
virtual InodeMetadata inodeMetadata(InodeIdentifier) const override;
virtual bool setModificationTime(InodeIdentifier, dword timestamp) override;
virtual InodeIdentifier createInode(InodeIdentifier parentInode, const String& name, word mode) override;
virtual ssize_t readInodeBytes(InodeIdentifier, Unix::off_t offset, size_t count, byte* buffer) const override;
virtual InodeIdentifier createInode(InodeIdentifier parentInode, const String& name, Unix::mode_t, unsigned size) override;
virtual Unix::ssize_t readInodeBytes(InodeIdentifier, Unix::off_t offset, Unix::size_t count, byte* buffer) const override;
virtual InodeIdentifier makeDirectory(InodeIdentifier parentInode, const String& name, Unix::mode_t) override;
bool isDirectoryInode(unsigned) const;
unsigned allocateInode(unsigned preferredGroup, unsigned expectedSize);
Vector<BlockIndex> allocateBlocks(unsigned group, unsigned count);
unsigned groupIndexFromInode(unsigned) const;
Vector<unsigned> blockListForInode(const ext2_inode&) const;
@ -51,12 +57,15 @@ private:
void dumpBlockBitmap(unsigned groupIndex) const;
void dumpInodeBitmap(unsigned groupIndex) const;
template<typename F>
void traverseInodeBitmap(unsigned groupIndex, F) const;
template<typename F> void traverseInodeBitmap(unsigned groupIndex, F) const;
template<typename F> void traverseBlockBitmap(unsigned groupIndex, F) const;
bool addInodeToDirectory(unsigned directoryInode, unsigned inode, const String& name, byte fileType);
bool writeDirectoryInode(unsigned directoryInode, Vector<DirectoryEntry>&&);
bool setInodeAllocationState(unsigned inode, bool);
bool setBlockAllocationState(GroupIndex, BlockIndex, bool);
bool modifyLinkCount(InodeIndex, int delta);
unsigned m_blockGroupCount { 0 };