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Ext2FS: Implement writing into inodes with arbitrary offset and length.

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Okay, this is pretty cool. :^) There are some issues and limitations for
sure but the basic functionality is there.
This commit is contained in:
Andreas Kling
2019-01-23 04:29:56 +01:00
parent 29dfb4ae13
commit 906685e238
8 changed files with 147 additions and 19 deletions
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3
VirtualFileSystem/Ext2FileSystem.h
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@@ -33,6 +33,7 @@ private:
virtual String reverse_lookup(InodeIdentifier) override;
virtual void flush_metadata() override;
virtual bool write(const ByteBuffer&) override;
virtual ssize_t write_bytes(Unix::off_t, size_t, const byte* data, FileDescriptor*) override;
virtual bool add_child(InodeIdentifier child_id, const String& name, byte file_type, int& error) override;
virtual bool remove_child(const String& name, int& error) override;
virtual RetainPtr<Inode> parent() const override;
@@ -93,7 +94,7 @@ private:
unsigned group_index_from_inode(unsigned) const;
Vector<unsigned> block_list_for_inode(const ext2_inode&, bool include_block_list_blocks = false) const;
bool write_block_list_for_inode(InodeIndex, ext2_inode&, Vector<BlockIndex>&&);
bool write_block_list_for_inode(InodeIndex, ext2_inode&, const Vector<BlockIndex>&);
void dump_block_bitmap(unsigned groupIndex) const;
void dump_inode_bitmap(unsigned groupIndex) const;