Ej 7

#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;
                    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 ("algunombre.text", O_CREAT, 0777)) < 0)

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

                                  }

                            flag = read(descriptor, &buffer, 5);
                            write(d_pipe[1], buffer, 6);
			    close(d_pipe[1]);
                            exit(EXIT_SUCCESS);
                    }
                    else
                    {
                            pid2 = fork();
                            if(pid2 == -1)
                            {
                                    printf("EEROROOROARFSADF");
                                    exit(EXIT_FAILURE);
                            }
                            if(pid2 == 0)
                            {
                                    close(d_pipe[1]);
                                    nbytes = read(d_pipe[0], readbuffer, sizeof(readbuffer));
                                    printf("Mira recibiste algo: %s\n", readbuffer);
                                    exit(EXIT_SUCCESS);
                            }
				else
 				{
					waitpid(pid1);
					waitpid(pid2);
					exit(EXIT_SUCCESS);
				}

                    }
            }