wf                424 sysfile.c        struct file *rf, *wf;
wf                429 sysfile.c        if(pipealloc(&rf, &wf) < 0)
wf                432 sysfile.c        if((fd0 = fdalloc(rf)) < 0 || (fd1 = fdalloc(wf)) < 0){
wf                436 sysfile.c          fileclose(wf);