poky-qemu-internal: fix locking of tap lockfile

Signed-off-by: Saul Wold <Saul.Wold@intel.com>

scripts/poky-qemu-internal

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/bash -x
 
 # Handle running Poky images under qemu
 #
@@ -62,22 +62,26 @@ TAP=""
 LOCKFILE=""
 for tap in $POSSIBLE; do
     LOCKFILE="$LOCKDIR/$tap"
-    if lockfile $LOCKFILE; then
+    if lockfile -2 -r 1 $LOCKFILE; then
 	TAP=$tap
 	break;
-    fi
+    fi 
 done
 
 if [ "$TAP" = "" ]; then
     GROUPID=`id -g`
     echo 'Setting up tap interface under sudo'
-    TAP=`sudo $QEMUIFUP $GROUPID $POKY_NATIVE_SYSROOT`
+    tap=`sudo $QEMUIFUP $GROUPID $POKY_NATIVE_SYSROOT`
     if [ $? -ne 0 ]; then
         # Re-run standalone to see verbose errors
         sudo $QEMUIFUP $GROUPID $POKY_NATIVE_SYSROOT
         return
     fi
-    LOCKFILE=""
+    LOCKFILE="$LOCKDIR/$tap"
+    if lockfile $LOCKFILE; then
+	TAP=$tap
+	break;
+    fi 
 else
     echo "Using preconfigured tap device '$TAP'"
 fi