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Add support for removing directories.

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It's really only supported in Ext2FS since SynthFS doesn't really want you
mucking around with its files. This is pretty neat though :^)

I ran into some trouble with HashMap while working on this but opted to work
around it and leave that for a separate investigation.
This commit is contained in:
Andreas Kling 2019-01-28 04:16:01 +01:00
parent 031c62a21e
commit c95228b128
19 changed files with 185 additions and 40 deletions
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9
Kernel/FileSystem.h
View file

@ -78,16 +78,17 @@ public:
InodeIdentifier identifier() const { return { fsid(), index() }; }
virtual InodeMetadata metadata() const = 0;
ByteBuffer read_entire(FileDescriptor* = nullptr);
ByteBuffer read_entire(FileDescriptor* = nullptr) const;
virtual ssize_t read_bytes(off_t, size_t, byte* buffer, FileDescriptor*) = 0;
virtual bool traverse_as_directory(Function<bool(const FS::DirectoryEntry&)>) = 0;
virtual ssize_t read_bytes(off_t, size_t, byte* buffer, FileDescriptor*) const = 0;
virtual bool traverse_as_directory(Function<bool(const FS::DirectoryEntry&)>) const = 0;
virtual InodeIdentifier lookup(const String& name) = 0;
virtual String reverse_lookup(InodeIdentifier) = 0;
virtual ssize_t write_bytes(off_t, size_t, const byte* data, FileDescriptor*) = 0;
virtual bool add_child(InodeIdentifier child_id, const String& name, byte file_type, int& error) = 0;
virtual bool remove_child(const String& name, int& error) = 0;
virtual RetainPtr<Inode> parent() const = 0;
virtual size_t directory_entry_count() const = 0;
bool is_metadata_dirty() const { return m_metadata_dirty; }
@ -109,7 +110,7 @@ protected:
Inode(FS& fs, unsigned index);
void set_metadata_dirty(bool b) { m_metadata_dirty = b; }
Lock m_lock;
mutable Lock m_lock;
private:
FS& m_fs;