qemu_guest_agent.py: check the default path of fsfreeze-hook

Signed-off-by: Nyama <yama@redhat.com>

qemu/tests/cfg/qemu_guest_agent.cfg

@@ -149,6 +149,16 @@
             disk_write_cmd = "dd if=/dev/zero of=%s/file bs=1M count=4"
             Windows:
                 disk_write_cmd = "cd %s:\ && echo test > a.txt"
+        - check_path_fsfreeze_hook:
+            no Windows
+            gagent_check_type = path_fsfreeze_hook
+            gagent_help_cmd = "qemu-ga --help | grep 'fsfreeze-hook' | tail -1"
+            gagent_path_cmd = "rpm -ql qemu-guest-agent"
+            virtio_serial:
+                gagent_start_cmd = "qemu-ga -m virtio-serial -p /dev/virtio-ports/org.qemu.guest_agent.0 -F -d"
+            isa_serial:
+                gagent_start_cmd = "pgrep qemu-ga || qemu-ga -d -m isa-serial -p /dev/ttyS1 -F"
+
     variants:
         - virtio_serial:
             gagent_serial_type = virtio

qemu/tests/qemu_guest_agent.py

@@ -1009,6 +1009,34 @@ class QemuGuestAgentBasicCheck(QemuGuestAgentTest):
                 utils_disk.umount(new_disks[0], mnt_point[0], session=session)
             session.close()
 
+    @error_context.context_aware
+    def gagent_check_path_fsfreeze_hook(self, test, params, env):
+        """
+        Check if the default path of fsfreeze-hook is correct
+
+        :param test: kvm test object
+        :param params: Dictionary with the test parameters
+        :param env: Dictionary with test environment
+        """
+        session = self._get_session(params, self.vm)
+        self.gagent_stop(session, self.vm)
+        error_context.context("Start gagent with -F option", logging.info)
+        self.gagent_start(session, self.vm)
+        gagent_path_cmd = params["gagent_path_cmd"]
+        error_context.context("Check if default path of fsfreeze-hook is in "
+                              "output of %s" % gagent_path_cmd, logging.info)
+        s, o = session.cmd_status_output(params["gagent_help_cmd"])
+        help_cmd_output = o.strip().replace(')', '').split()[-1]
+        s, o = session.cmd_status_output(gagent_path_cmd)
+        if help_cmd_output in o:
+            logging.info("The default path for script 'fsfreeze-hook' is "
+                         "in output of %s." % gagent_path_cmd)
+            error_context.context("Execute 'guest-fsfreeze-freeze'", logging.info)
+            self.gagent.fsfreeze()
+            self.gagent.fsthaw()
+        else:
+            test.fail("The default path of fsfreeze-hook doesn't match with expectation.")
+
     def run_once(self, test, params, env):
         QemuGuestAgentTest.run_once(self, test, params, env)