#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
#include <bio.h>

int	fd[2];
int	fdout[2];
char	buf[256];
int	r;

enum {Infd, Outfd};

void
main(int argc, char *argv[])
{
	if(pipe(fd) < 0 || pipe(fdout) < 0)
		sysfatal("pipe: %r");
	print("cat /proc/%d/fd ", getpid());
	switch(fork()){
		case 0:
			print("/proc/%d/fd\n", getpid());
			close(0);
			close(1);
			dup(fd[0], 0);
			dup(fd[1], 1);
			execl("/bin/rc", "rc", "-c", "bc", nil);
			sysfatal("ctrash");
		default:
			print("current process\n");
//			close(1);
//			dup(fdout[1], 1);
Rd:
			if(r = read(0, buf, sizeof buf)){
				buf[r] = 0;
				write(fd[Outfd], buf, r);
				sleep(20);
			}
			if(r = read(fd[0], buf, sizeof buf)){
				buf[r] = 0;
				write(1, buf, r);
			}
			goto Rd;

	}
	print("done\n");
	exits(nil);
}

// infd for prog -> infd for bc
// outfd for bc	 -> outfd for prog