libvirt_keywrap: handle hexdump when token unavailable

Commit 3bcc957 switched to usage of `hexdump`. Unfortunately, `hexdump` doesn't set error code if no token can be read and instead just notifies "hexdump: /sys/devices/virtual/misc/pkey/protkey/protkey_aes_128: No such device". Check for substring in output to handle this as if error code was set. Signed-off-by: Sebastian Mitterle <[email protected]>
vipmike007 · Aug 9, 2021 · 80bda1b · 80bda1b
1 parent 6143b1b
commit 80bda1b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/virttest/utils_libvirt/libvirt_keywrap.py b/virttest/utils_libvirt/libvirt_keywrap.py
@@ -40,7 +40,7 @@ def get_some_aes_key_token(self):
         attr_path = os.path.join(self.sysfs, some_key_attribute)
         error, output = cmd_status_output(cmd="hexdump %s" % attr_path,
                                           session=self.session)
-        if error:
+        if error or "No such device" in output:
             logging.debug("Error reading from %s: %s", attr_path, output)
             return None
         return output