NDEV               16 kernel/file.c  struct devsw devsw[NDEV];
NDEV              117 kernel/file.c      if(f->major < 0 || f->major >= NDEV || !devsw[f->major].read)
NDEV              145 kernel/file.c      if(f->major < 0 || f->major >= NDEV || !devsw[f->major].write)
NDEV              338 kernel/sysfile.c   if(ip->type == T_DEVICE && (ip->major < 0 || ip->major >= NDEV)){