Pin tool 관련 질문 드립니다.

#include <fstream>
#include <iomanip>
#include <iostream>
#include <string.h>
#include "pin.H"
 
int (*fptsystem)(const char *);
 
int mysystem(const char * cmd)
{
   char buff[1024];
 
   sprintf(buff, "../../../pin -follow_execv -t ./obj-intel64/test.so -- %s", cmd );
   int res = fptsystem(buff);
   cout << "buff : " << buff << endl;
 
   return res;
}
 
VOID ImageLoad(IMG img, VOID *v)
{
    if ( (IMG_Name(img).find("libc.so") != string::npos) ||
         (IMG_Name(img).find("LIBC.SO") != string::npos) ||
         (IMG_Name(img).find("LIBC.so") != string::npos) )
    {  // check that tool can also probe execve successfully
        RTN rtnsystem = RTN_FindByName(img, "system");
        if (RTN_Valid(rtnsystem) && RTN_IsSafeForProbedReplacement(mysystem))
        {
            cout << "Inserting probe for system at " << hex << RTN_Address(mysystem) << endl;
            AFUNPTR fptr = (RTN_ReplaceProbed(rtnsystem, AFUNPTR(mysystem)));
            fptsystem = (int (*)(__const char *))fptr;
        }
    }
}
 
 
int main(int argc, char * argv[])
{
    // Initialize symbol table code, needed for rtn instrumentation
    PIN_InitSymbols();
 
    // Initialize pin
    if (PIN_Init(argc, argv)) return Usage();
 
    // Register ImageLoad to be called when an image is loaded
    IMG_AddInstrumentFunction(ImageLoad, 0);
 
    // Register Fini to be called when the application exits
    PIN_AddFiniFunction(Fini, 0);
 
    // Start the program, never returns
    PIN_StartProgram();
 
    return 0;