[Qemu-block] [PATCH v2 13/16] iotests.py: Add qemu_nbd function

[Max Reitz]

Signed-off-by: Max Reitz <address@hidden>
---
 tests/qemu-iotests/iotests.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 0a238ec..dd8805a 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -28,7 +28,7 @@ import qmp
 import qtest
 import struct
 
-__all__ = ['imgfmt', 'imgproto', 'test_dir' 'qemu_img', 'qemu_io',
+__all__ = ['imgfmt', 'imgproto', 'test_dir' 'qemu_img', 'qemu_io', 'qemu_nbd',
            'VM', 'QMPTestCase', 'notrun', 'main']
 
 # This will not work if arguments contain spaces but is necessary if we
@@ -41,6 +41,10 @@ qemu_io_args = [os.environ.get('QEMU_IO_PROG', 'qemu-io')]
 if os.environ.get('QEMU_IO_OPTIONS'):
     qemu_io_args += os.environ['QEMU_IO_OPTIONS'].strip().split(' ')
 
+qemu_nbd_args = [os.environ.get('QEMU_NBD_PROG', 'qemu-nbd')]
+if os.environ.get('QEMU_NBD_OPTIONS'):
+    qemu_nbd_args += os.environ['QEMU_NBD_OPTIONS'].strip().split(' ')
+
 qemu_args = [os.environ.get('QEMU_PROG', 'qemu')]
 if os.environ.get('QEMU_OPTIONS'):
     qemu_args += os.environ['QEMU_OPTIONS'].strip().split(' ')
@@ -86,6 +90,11 @@ def qemu_io(*args):
         sys.stderr.write('qemu-io received signal %i: %s\n' % (-exitcode, ' 
'.join(args)))
     return subp.communicate()[0]
 
+def qemu_nbd(*args):
+    '''Run qemu-nbd in the background'''
+    subp = subprocess.Popen(qemu_nbd_args + list(args))
+    return subp
+
 def compare_images(img1, img2):
     '''Return True if two image files are identical'''
     return qemu_img('compare', '-f', imgfmt,
-- 
2.7.1