I am trying to parse a .elf file to read it and edit it a bit using open() and mmap(). However, my code is not working as expected.

I tried to narrow it down as much as possible while debugging to the point that I am just printing the file content. The problem that I found so far is the file content are not as expected at all when I compare it to an obj dump objdump -s my_file.elf

Here is my code

#include <sys/stat.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include   <sys/mman.h>

typedef struct iFi  {
  unsigned char               *pB;       // memory mapped file
  int             handle_File;
  unsigned long         fSize;       // file size
  struct stat       sts;       /* File status */
  char        szFN[1024];       // file name
} XFILE;


int main (int argc, char **argv)  {
    if(argc != 2)    
        return 1;
    
    XFILE *pF;
    memset (&pF, 0, sizeof (pF));
    memset (&pF->pB, 0, sizeof (pF->pB));
    memset (&pF->szFN, 0, sizeof (pF->szFN));
    strcpy (pF->szFN, argv[1]);

    mode_t perms = S_IRUSR | S_IWUSR;
    pF->handle_File = open("../hello.elf", O_RDWR, perms);
    if (pF->handle_File < 0)  {
        perror("open");
        return (1);
    }

    int n = stat (pF->szFN, &pF->sts);
    if (n != 0) return(1000);                     // failed
    pF->fSize = pF->sts.st_size;
    //pF->hFmap = CreateFileMapping (pF->hFile, NULL, PAGE_READWRITE /*PAGE_WRITECOPY*/, 0, 0, NULL);
    pF->pB = static_cast<unsigned char*>(mmap(NULL, pF->fSize, PROT_READ | PROT_WRITE, MAP_SHARED, pF->handle_File, 0));
    if (pF->pB == NULL) return 1000;             // can't map view of file
    printf("Contents of file = 0x%xn", *pF->pB);

    return 0;

}