Relator seeks a writ of mandamus to compel Gary Johnson, Executive Director of the Texas Department of Criminal Justice, to credit his sentence with 12 months of time credit. Our writ power extends only to enforcement of our jurisdiction and to judges of district and county courts within this appellate district. Tex. Gov't Code Ann. § 22.221 (Vernon Supp. 2003). Johnson is not a person against whom we may issue a writ of mandamus other than to protect our jurisdiction, and Relator has not shown that the writ is necessary to enforce our jurisdiction.

The petition for writ of mandamus, filed August 29, 2003, is DENIED.

PER CURIAM

Opinion Delivered September 11, 2003

Before McKeithen, C.J., Burgess and Gaultney, JJ.

1. Tex. R. App. P. 47.4.