#include <sys/mman.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/stat.h>
#define MAX_LEN 10000
 
struct region
{
  int noProces ;
  char buf[MAX_LEN];
 
 
};
 
struct region *ptrRegion;
 
int main()
{
 
  int fd = shm_open ("/home/suren/test",O_CREAT|O_RDWR,S_IRUSR|S_IWUSR);
  if (fd == -1 )
    {
 
      printf("error\n");
    }
 
  if (ftruncate(fd,sizeof(struct region))== -1)
    {
 
 
    }
 
  ptrRegion= mmap(NULL,sizeof(struct region),PROT_READ | PROT_WRITE,MAP_SHARED,fd,0);
 
 
  if (ptrRegion == MAP_FAILED)
    {
 
 
    }
 
 
  return 0;
}