/*
 * Exemplo de arquivo mapeado em memória
 */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>

int main() {
  int fd;
  char* map;

  fd = open ("teste.txt", O_RDWR);

  map = mmap (NULL, 100, PROT_WRITE | PROT_READ, MAP_SHARED, fd, 0);

  if (fork()) {
    char *str = "Eu sou o pai  ";
    printf("%s", map);
    strcpy(map, str);
  } else {
    char *str = "Eu sou o filho";
    strcpy(map, str);
  }
    
  munmap(map, 100);

  close(fd);
  
  return 0;

}