zfs_secpolicy_rename_perms
extern int zfs_secpolicy_rename_perms(const char *from, const char *to,
extern int zfs_secpolicy_rename_perms(const char *, const char *, cred_t *);
err = zfs_secpolicy_rename_perms(from, to, cr);
return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));