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Rework DiskDevice's read() and write() to be non-virtual wrappers.

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This way subclasses only have to implement readBlock() and writeBlock().
read() and write() require that the offset and length are both divisible
by the blockSize().
This commit is contained in:
Andreas Kling 2018-10-16 14:11:58 +02:00
parent cafb5b2ad6
commit 8293a0ff36
5 changed files with 47 additions and 10 deletions
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5
VirtualFileSystem/FileBackedDiskDevice.h
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@ -16,12 +16,13 @@ public:
virtual unsigned blockSize() const override;
virtual bool readBlock(unsigned index, byte* out) const override;
virtual bool writeBlock(unsigned index, const byte*) override;
virtual bool read(qword offset, unsigned length, byte* out) const override;
virtual bool write(qword offset, unsigned length, const byte* data) override;
private:
virtual const char* className() const override;
bool readInternal(qword offset, unsigned length, byte* out) const;
bool writeInternal(qword offset, unsigned length, const byte* data);
FileBackedDiskDevice(String&& imagePath, unsigned blockSize);
String m_imagePath;