ej7 while

 #include<stdlib.h>
    #include<unistd.h>
    #include<stdio.h>
    #include<sys/stat.h>
    #include<fcntl.h>
    #include <sys/types.h>
    #include <strings.h>

            int main (void)
            {
                        int pid1, pid2, nbytes, descriptor, flag, cond;
                        int d_pipe[2];
                        char buffer[80];
                        char readbuffer[80];
                        pipe(d_pipe);


                        pid1 = fork();

                        if(pid1 == -1)
                        {
                                printf("ERROR 404");
                                exit(EXIT_FAILURE);
                        }

                        if(pid1 == 0)
                        {

                                close(d_pipe[0]);
                               if ((descriptor = open ("algunnombre.text", O_CREAT, 0777)) < 0)

                                      {
                                             printf("ERROR OPEN");
                                             exit(EXIT_FAILURE);

                                      }


                                  while ((flag = read(descriptor, &buffer, 6)) != 0)
                                    {

                                               write(d_pipe[1], buffer, flag);
                                               //flag = read(descriptor, &buffer, 6);
                                               //printf("%d", flag);


                                    }
                                sprintf(buffer,"%s\n","fin");
                                write(d_pipe[1], buffer, flag);
                                close(d_pipe[1]);
                                close(descriptor);
                                exit(EXIT_SUCCESS);
                        }
                        else
                        {
                                pid2 = fork();


                                if(pid2 == -1)
                                {
                                        printf("EEROROOROARFSADF");
                                        exit(EXIT_FAILURE);
                                }
                                if(pid2 == 0)
                                {
                                        close(d_pipe[1]);

                                        while ((nbytes = read(d_pipe[0], &readbuffer, 6)) == 6)
                                         {

                                             printf("Mira recibiste algo: %s con %d bytes\n", readbuffer,nbytes);
                                             //nbytes = read(d_pipe[0], readbuffer, sizeof(readbuffer));
                                             //printf("%d", nbytes);
                                         }
                                        printf("Mira recibiste algo: %s con %d bytes\n", readbuffer,nbytes);
                                        printf("TTTEERRMMIINNEE!!\n");
                                        close(d_pipe[0]);
                                        //NO SALE DEL WHILE

                                        exit(EXIT_SUCCESS);
                                }

                                            waitpid(pid1);
                                            waitpid(pid2);




                        }
                                exit(EXIT_SUCCESS);
                }