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* BUSEDevice.cpp:

This commit is contained in:
comatose 2012-12-11 16:13:14 +09:00
parent 892c132b43
commit a1e8b08807
3 changed files with 1 additions and 66 deletions
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37
BUSEDevice.cpp
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#include "BUSEDevice.hpp"
using namespace std;
int xmp_read(void *buf, u_int32_t len, u_int64_t offset, void *userdata)
{
BUSEDevice* owner = static_cast<BUSEDevice*>(userdata);
return owner->handleRead(offset, len, buf);
}
int xmp_write(const void *buf, u_int32_t len, u_int64_t offset, void *userdata)
{
BUSEDevice* owner = static_cast<BUSEDevice*>(userdata);
return owner->handleWrite(offset, len, buf);
}
void xmp_disc(void *userdata)
{
BUSEDevice* owner = static_cast<BUSEDevice*>(userdata);
return owner->handleDisc();
}
int xmp_flush(void *userdata)
{
BUSEDevice* owner = static_cast<BUSEDevice*>(userdata);
return owner->handleFlush();
}
int xmp_trim(u_int64_t from, u_int32_t len, void *userdata){
BUSEDevice* owner = static_cast<BUSEDevice*>(userdata);
return owner->handleTrim(from, len);
}
int BUSEDevice::run(const char* devPath, uint64_t capacity){
_aop = {xmp_read, xmp_write, xmp_disc, xmp_flush, xmp_trim, capacity};
return buse_main(devPath, &_aop, this);
}

28
BUSEDevice.hpp
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#ifndef BUSEDevice_HPP
#define BUSEDevice_HPP
#include <cstdint>
#include "buse.h"
class BUSEDevice {
friend int xmp_read(void *buf, u_int32_t len, u_int64_t offset, void *userdata);
friend int xmp_write(const void *buf, u_int32_t len, u_int64_t offset, void *userdata);
friend void xmp_disc(void *userdata);
friend int xmp_flush(void *userdata);
friend int xmp_trim(u_int64_t from, u_int32_t len, void *userdata);
public:
virtual int run(const char* devPath, uint64_t capacity);
protected:
virtual int handleRead(uint64_t offset, uint32_t len, void* buf) = 0;
virtual int handleWrite(uint64_t offset, uint32_t len, const void* buf) = 0;
virtual void handleDisc() = 0;
virtual int handleFlush() = 0;
virtual int handleTrim(uint64_t offset, uint32_t len) = 0;
private:
struct buse_operations _aop;
};
#endif