[AArch64] Set errno in ftruncate() and truncate().

libgloss/ChangeLog

@@ -1,3 +1,10 @@
+2013-11-21  Marcus Shawcroft  <marcus.shawcroft@arm.com>
+
+	* aarch64/ftruncate.c: Include errno.h.
+	(ftruncate) Set errno.
+	* aarch64/truncate.c: Include errno.h.
+	(truncate) Set errno.
+
 2013-11-20  Marcus Shawcroft  <marcus.shawcroft@arm.com>
 
 	* arm/ftruncate.c: Include errno.h.

libgloss/aarch64/ftruncate.c

@@ -23,10 +23,12 @@
  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
 
+#include <errno.h>
 #include <sys/types.h>
 
 int
 ftruncate (int file, off_t length)
 {
+  errno = ENOSYS;
   return -1;
 }

libgloss/aarch64/truncate.c

@@ -23,10 +23,12 @@
  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
 
+#include <errno.h>
 #include <sys/types.h>
 
 int
 truncate (const char *path, off_t length)
 {
+  errno = ENOSYS;
   return -1;
 }