rf                505 kernel/sysfile.c   struct file *rf, *wf;
rf                510 kernel/sysfile.c   if (pipealloc(&rf, &wf) < 0)
rf                513 kernel/sysfile.c   if ((fd0 = fdalloc(rf)) < 0 || (fd1 = fdalloc(wf)) < 0) {
rf                516 kernel/sysfile.c     fileclose(rf);
rf                525 kernel/sysfile.c     fileclose(rf);