FD_PIPE            72 file.c           if(ff.type == FD_PIPE)
FD_PIPE           102 file.c           if(f->type == FD_PIPE)
FD_PIPE           123 file.c           if(f->type == FD_PIPE)
FD_PIPE            37 pipe.c           (*f0)->type = FD_PIPE;
FD_PIPE            41 pipe.c           (*f1)->type = FD_PIPE;