zfs_prop_index_to_string
VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0);
if (zfs_prop_index_to_string(prop, val, &strval) != 0)
error = zfs_prop_index_to_string(zfs_prop, numval, &propval);
error = zfs_prop_index_to_string(zfs_prop, numval,
if (zfs_prop_index_to_string(prop,
int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **);