* BUSEDevice.cpp:

BUSEDevice.cpp

@@ -0,0 +1,37 @@
+#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);
+}

BUSEDevice.hpp

@@ -0,0 +1,28 @@
+#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