Add qemu 2.4.0

[kvmfornfv.git] / qemu / tests / drive_del-test.c

diff --git a/qemu/tests/drive_del-test.c b/qemu/tests/drive_del-test.c
new file mode 100644 (file)
index 0000000..8951f6f
--- /dev/null
+++ b/qemu/tests/drive_del-test.c
@@ -0,0 +1,137 @@
+/*
+ * blockdev.c test cases
+ *
+ * Copyright (C) 2013-2014 Red Hat Inc.
+ *
+ * Authors:
+ *  Stefan Hajnoczi <stefanha@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ */
+
+#include <glib.h>
+#include <string.h>
+#include "libqtest.h"
+
+static void drive_add(void)
+{
+    QDict *response;
+
+    response = qmp("{'execute': 'human-monitor-command',"
+                   " 'arguments': {"
+                   "   'command-line': 'drive_add 0 if=none,id=drive0'"
+                   "}}");
+    g_assert(response);
+    g_assert_cmpstr(qdict_get_try_str(response, "return"), ==, "OK\r\n");
+    QDECREF(response);
+}
+
+static void drive_del(void)
+{
+    QDict *response;
+
+    response = qmp("{'execute': 'human-monitor-command',"
+                   " 'arguments': {"
+                   "   'command-line': 'drive_del drive0'"
+                   "}}");
+    g_assert(response);
+    g_assert_cmpstr(qdict_get_try_str(response, "return"), ==, "");
+    QDECREF(response);
+}
+
+static void device_del(void)
+{
+    QDict *response;
+
+    /* Complication: ignore DEVICE_DELETED event */
+    qmp_discard_response("{'execute': 'device_del',"
+                         " 'arguments': { 'id': 'dev0' } }");
+    response = qmp_receive();
+    g_assert(response);
+    g_assert(qdict_haskey(response, "return"));
+    QDECREF(response);
+}
+
+static void test_drive_without_dev(void)
+{
+    /* Start with an empty drive */
+    qtest_start("-drive if=none,id=drive0");
+
+    /* Delete the drive */
+    drive_del();
+
+    /* Ensure re-adding the drive works - there should be no duplicate ID error
+     * because the old drive must be gone.
+     */
+    drive_add();
+
+    qtest_end();
+}
+
+static void test_after_failed_device_add(void)
+{
+    QDict *response;
+    QDict *error;
+
+    qtest_start("-drive if=none,id=drive0");
+
+    /* Make device_add fail.  If this leaks the virtio-blk-pci device then a
+     * reference to drive0 will also be held (via qdev properties).
+     */
+    response = qmp("{'execute': 'device_add',"
+                   " 'arguments': {"
+                   "   'driver': 'virtio-blk-pci',"
+                   "   'drive': 'drive0'"
+                   "}}");
+    g_assert(response);
+    error = qdict_get_qdict(response, "error");
+    g_assert_cmpstr(qdict_get_try_str(error, "class"), ==, "GenericError");
+    QDECREF(response);
+
+    /* Delete the drive */
+    drive_del();
+
+    /* Try to re-add the drive.  This fails with duplicate IDs if a leaked
+     * virtio-blk-pci exists that holds a reference to the old drive0.
+     */
+    drive_add();
+
+    qtest_end();
+}
+
+static void test_drive_del_device_del(void)
+{
+    /* Start with a drive used by a device that unplugs instantaneously */
+    qtest_start("-drive if=none,id=drive0,file=/dev/null,format=raw"
+                " -device virtio-scsi-pci"
+                " -device scsi-hd,drive=drive0,id=dev0");
+
+    /*
+     * Delete the drive, and then the device
+     * Doing it in this order takes notoriously tricky special paths
+     */
+    drive_del();
+    device_del();
+
+    qtest_end();
+}
+
+int main(int argc, char **argv)
+{
+    const char *arch = qtest_get_arch();
+
+    g_test_init(&argc, &argv, NULL);
+
+    qtest_add_func("/drive_del/without-dev", test_drive_without_dev);
+
+    /* TODO I guess any arch with PCI would do */
+    if (!strcmp(arch, "i386") || !strcmp(arch, "x86_64")) {
+        qtest_add_func("/drive_del/after_failed_device_add",
+                       test_after_failed_device_add);
+        qtest_add_func("/blockdev/drive_del_device_del",
+                       test_drive_del_device_del);
+    }
+
+    return g_test_run();
+}