1 files changed, 34 insertions, 4 deletions
diff --git a/tests/qemu-iotests/common.config b/tests/qemu-iotests/common.config
index a1973ad9d0..596bb2b1e5 100644
--- a/tests/qemu-iotests/common.config
+++ b/tests/qemu-iotests/common.config
@@ -103,10 +103,40 @@ if [ -z "$QEMU_NBD_PROG" ]; then
     export QEMU_NBD_PROG="`set_prog_path qemu-nbd`"
 fi
 
-export QEMU=$QEMU_PROG
-export QEMU_IMG=$QEMU_IMG_PROG
-export QEMU_IO="$QEMU_IO_PROG $QEMU_IO_OPTIONS"
-export QEMU_NBD=$QEMU_NBD_PROG
+_qemu_wrapper()
+{
+    (exec "$QEMU_PROG" $QEMU_OPTIONS "$@")
+}
+
+_qemu_img_wrapper()
+{
+    (exec "$QEMU_IMG_PROG" $QEMU_IMG_OPTIONS "$@")
+}
+
+_qemu_io_wrapper()
+{
+    (exec "$QEMU_IO_PROG" $QEMU_IO_OPTIONS "$@")
+}
+
+_qemu_nbd_wrapper()
+{
+    (exec "$QEMU_NBD_PROG" $QEMU_NBD_OPTIONS "$@")
+}
+
+export QEMU=_qemu_wrapper
+export QEMU_IMG=_qemu_img_wrapper
+export QEMU_IO=_qemu_io_wrapper
+export QEMU_NBD=_qemu_nbd_wrapper
+
+default_machine=$($QEMU -machine \? | awk '/(default)/{print $1}')
+default_alias_machine=$($QEMU -machine \? |\
+    awk -v var_default_machine="$default_machine"\)\
+    '{if ($(NF-2)=="(alias"&&$(NF-1)=="of"&&$(NF)==var_default_machine){print $1}}')
+if [ ! -z "$default_alias_machine" ]; then
+    default_machine="$default_alias_machine"
+fi
+
+export QEMU_DEFAULT_MACHINE="$default_machine"
 
 [ -f /etc/qemu-iotest.config ]       && . /etc/qemu-iotest.config