fdalloc            60 sysfile.c        if((fd=fdalloc(f)) < 0)
fdalloc           315 sysfile.c        if((f = filealloc()) == 0 || (fd = fdalloc(f)) < 0){
fdalloc           432 sysfile.c        if((fd0 = fdalloc(rf)) < 0 || (fd1 = fdalloc(wf)) < 0){