102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
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#pragma once
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#include "types.h"
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#include "ulist.h"
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#include "ustring.h"
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class BDDriver;
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class BDRequest;
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class BDDriver;
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class BDRequest;
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class BDVirtualDevice
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{
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public:
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BDVirtualDevice(BDDriver *driver, uint32 offset, uint32 num_sectors, uint32 sector_size, const char *name,
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bool writable);
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void addRequest(BDRequest *command);
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uint32 getBlockSize() const
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{
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return block_size_;
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}
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uint32 getDeviceNumber() const
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{
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return dev_number_;
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}
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BDDriver *getDriver()
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{
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return driver_;
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}
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const char *getName()
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{
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return name_.c_str();
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}
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uint32 getNumBlocks()
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{
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return num_sectors_ / (block_size_ / sector_size_);
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}
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/**
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* reads the data from the inode on the current device
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* @param offset where to start to read
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* @param size number of bytes that should be read
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* @param buffer to save the data that has been read
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*
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*/
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virtual int32 readData(uint32 offset, uint32 size, char *buffer);
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/**
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* reads the data from the inode on the current device
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* @param offset where to start to write
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* @param size number of bytes that should be written
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* @param buffer data, that should be written
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*
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*/
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virtual int32 writeData(uint32 offset, uint32 size, char *buffer);
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/**
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* the PartitionType is a 8bit field in the PartitionTable of a MBR
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* it specifies the FileSystem which is installed on the partition
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* @param part_type partition type value to be applied to the Device
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*/
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void setPartitionType(uint8 part_type);
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/**
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* getting the PartitionType of this Device (value of the 8bit field
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* in Partition Table of the MBR)
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* @return the partition type
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*/
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uint8 getPartitionType(void) const;
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void setDeviceNumber(uint32 number)
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{
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dev_number_ = number;
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}
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void setBlockSize(uint32 block_size)
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{
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assert(block_size % sector_size_ == 0);
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block_size_ = block_size;
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}
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private:
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BDVirtualDevice();
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uint32 dev_number_;
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uint32 offset_;
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uint32 num_sectors_;
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uint32 sector_size_;
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uint32 block_size_;
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bool writable_;
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BDDriver* driver_;
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uint8 partition_type_;
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ustl::string name_;
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};
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