pybind: fix valgrind warning on rbd_get_parent_info call

Signed-off-by: Jason Dillaman <dillaman@redhat.com>

diff --git a/src/pybind/rbd.py b/src/pybind/rbd.py
index 239104fe6fd700f525d99bb0a263382b1b0e92a0..28bff2f38b1a6343050695239ecc14a0eb0526fa 100644 (file)
--- a/src/pybind/rbd.py
+++ b/src/pybind/rbd.py
@@ -488,9 +488,12 @@ class Image(object):
             pool = create_string_buffer(size)
             name = create_string_buffer(size)
             snapname = create_string_buffer(size)
-            ret = self.librbd.rbd_get_parent_info(self.image, pool, len(pool),
-                                                  name, len(name), snapname,
-                                                  len(snapname))
+            ret = self.librbd.rbd_get_parent_info(self.image, byref(pool),
+                                                  c_size_t(size),
+                                                  byref(name),
+                                                  c_size_t(size),
+                                                  byref(snapname),
+                                                  c_size_t(size))
             if ret == -errno.ERANGE:
                 size *= 2