Sistemebi - Kodi [FIFO]

/* IGIVE OGOND FIFO-TI!!!!! */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>

/*
 * amocana:
 *  # mshobelma FIFO-shi chaweros monacemebi
 *  # shvilma es 'str' FIFO-dan waikitxos;
 *  # shvilma chaweros es 'str' failshi;
 *  # amis shemdeg mshobelma daakompiliros da gaushvas!
 */
int main()
{
  char str[] = "ragaca kodi!...";
  char str2[N]; // N vigulisxmot rom vicit da aris str-shi simboloebis raodenoba!

  int pr, FIFO, status, fd;

  (void)umask(0);
  FIFO = mknod("asdf.fifo", S_IFIFO | 0754, 0)
  if (FIFO == -1) exit(-1);

  pr = fork();
  if (pr == -1) exit(-1);

  if (pr != 0) // mshobeli:
  {
    // # mshibelma chaweros str kodi FIFO-shi!
    fd = open("asdf.fifo", O_WRONLY);
    if (fd == -1) exit(-1);
    if (write(fd, str, sizeof(str)) != sizeof(str)) exit(-1);
    close(fd);
    wait(&status);
    // chaweris shemdeg unda davacompilirot da mere gavushvat!
    execl("usr/bin/gcc", "gcc", "test.c", "-o", "test.out");
    execl("test.out","./test.out", NULL);
  }
  else // shvili:
  {
    // # shvilma FIFO-dan waikitxos da chaweros failshi
    fd = open("asdf.fifo", O_RDONLY);
    if (fd == -1) exit(-1);
    if (read(fd, str2, sizeof(str2)) != sizeof(str2)) exit(-1);
    close(fd);
    (void) umask(0);
    fd = open("test.c", O_WRONLY | O_CREAT, 0756);
    if (fd == -1) exit(-1);
    if (write(fd, str2, sizeof(str2)) != sizeof(str2)) exit(-1);
    // vsio sheiqmna faili da chaiwera!
  }
}