#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>

#define MEM_SIZE  (64*1024)   // 64k
#define MY_KEY    0xBAD02152  // Arbitrary key to "name" memory segment

int main(int args, char* argv) {
  
  int mem_handle;

  // Create (IPC_CREAT) new (IPC_EXCL) segment with permission to use 
  // for everybody 0666 = 110 110 110  (rwx for owner, group world)
  // Then anybody can clean up if needed 

  mem_handle = shmget(MY_KEY, MEM_SIZE, IPC_CREAT | IPC_EXCL | 0666);

  if (mem_handle==-1) {
    fprintf(stderr,"Memory [key=%08X] could not be created: ",MY_KEY);
    perror(0);  // Print out specific error in errno
    exit(1);
  }

  exit(0);
}