blktap: Extend userland busid to 32 bits

Signed-off-by: Chris Lalancette <clalance@redhat.com>

tools/blktap/drivers/blktapctrl.c

@@ -127,7 +127,7 @@ static int get_new_dev(int *major, int *minor, blkif_t *blkif)
 	char *devname;
 	
 	tr.domid = blkif->domid;
-        tr.busid = (unsigned short)blkif->be_id;
+        tr.busid = blkif->be_id;
 	ret = ioctl(ctlfd, BLKTAP_IOCTL_NEWINTF, tr );
 	
 	if ( (ret <= 0)||(ret > MAX_TAP_DEV) ) {

tools/blktap/lib/blktaplib.h

@@ -161,7 +161,7 @@ typedef struct tapdev_info {
 
 typedef struct domid_translate {
 	unsigned short domid;
-	unsigned short busid;
+	uint32_t busid;
 } domid_translate_t ;
 
 typedef struct image {