dsname
sname = dsname(dev, dkunit(dev), WHOLE_DISK_SLICE,
sname = dsname(dev, 0, 0, 0, NULL);
sname = dsname(dev, dkunit(dev), BASE_SLICE + dospart,
sname = dsname(dev, dkunit(dev), WHOLE_DISK_SLICE, WHOLE_SLICE_PART,
sname = dsname(dev, dkunit(dev), WHOLE_DISK_SLICE,
sname = dsname(dev, dkunit(dev), slice, WHOLE_SLICE_PART,
sname = dsname(dev, dkunit(dev), slice, WHOLE_SLICE_PART, partname);
char *dsname (cdev_t dev, int unit, int slice, int part,