tests/qtest/drive_del-test.c

   1 /*
   2  * blockdev.c test cases
   3  *
   4  * Copyright (C) 2013-2014 Red Hat Inc.
   5  *
   6  * Authors:
   7  *  Stefan Hajnoczi <stefanha@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
  10  * See the COPYING.LIB file in the top-level directory.
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "libqos/libqtest.h"
  15 #include "libqos/virtio.h"
  16 #include "qapi/qmp/qdict.h"
  17
  18 static void drive_add(QTestState *qts)
  19 {
  20     char *resp = qtest_hmp(qts, "drive_add 0 if=none,id=drive0");
  21
  22     g_assert_cmpstr(resp, ==, "OK\r\n");
  23     g_free(resp);
  24 }
  25
  26 static void drive_del(QTestState *qts)
  27 {
  28     char *resp = qtest_hmp(qts, "drive_del drive0");
  29
  30     g_assert_cmpstr(resp, ==, "");
  31     g_free(resp);
  32 }
  33
  34 static void device_del(QTestState *qts)
  35 {
  36     QDict *response;
  37
  38     response = qtest_qmp(qts, "{'execute': 'device_del',"
  39                          " 'arguments': { 'id': 'dev0' } }");
  40     g_assert(response);
  41     g_assert(qdict_haskey(response, "return"));
  42     qobject_unref(response);
  43
  44     qtest_qmp_eventwait(qts, "DEVICE_DELETED");
  45 }
  46
  47 static void test_drive_without_dev(void)
  48 {
  49     QTestState *qts;
  50
  51     /* Start with an empty drive */
  52     qts = qtest_init("-drive if=none,id=drive0");
  53
  54     /* Delete the drive */
  55     drive_del(qts);
  56
  57     /* Ensure re-adding the drive works - there should be no duplicate ID error
  58      * because the old drive must be gone.
  59      */
  60     drive_add(qts);
  61
  62     qtest_quit(qts);
  63 }
  64
  65 /*
  66  * qvirtio_get_dev_type:
  67  * Returns: the preferred virtio bus/device type for the current architecture.
  68  * TODO: delete this
  69  */
  70 static const char *qvirtio_get_dev_type(void)
  71 {
  72     const char *arch = qtest_get_arch();
  73
  74     if (g_str_equal(arch, "arm") || g_str_equal(arch, "aarch64")) {
  75         return "device";  /* for virtio-mmio */
  76     } else if (g_str_equal(arch, "s390x")) {
  77         return "ccw";
  78     } else {
  79         return "pci";
  80     }
  81 }
  82
  83 static void test_after_failed_device_add(void)
  84 {
  85     char driver[32];
  86     QDict *response;
  87     QTestState *qts;
  88
  89     snprintf(driver, sizeof(driver), "virtio-blk-%s",
  90              qvirtio_get_dev_type());
  91
  92     qts = qtest_init("-drive if=none,id=drive0");
  93
  94     /* Make device_add fail. If this leaks the virtio-blk device then a
  95      * reference to drive0 will also be held (via qdev properties).
  96      */
  97     response = qtest_qmp(qts, "{'execute': 'device_add',"
  98                               " 'arguments': {"
  99                               "   'driver': %s,"
 100                               "   'drive': 'drive0'"
 101                               "}}", driver);
 102     g_assert(response);
 103     qmp_expect_error_and_unref(response, "GenericError");
 104
 105     /* Delete the drive */
 106     drive_del(qts);
 107
 108     /* Try to re-add the drive.  This fails with duplicate IDs if a leaked
 109      * virtio-blk device exists that holds a reference to the old drive0.
 110      */
 111     drive_add(qts);
 112
 113     qtest_quit(qts);
 114 }
 115
 116 static void test_drive_del_device_del(void)
 117 {
 118     QTestState *qts;
 119
 120     /* Start with a drive used by a device that unplugs instantaneously */
 121     qts = qtest_initf("-drive if=none,id=drive0,file=null-co://,"
 122                       "file.read-zeroes=on,format=raw"
 123                       " -device virtio-scsi-%s"
 124                       " -device scsi-hd,drive=drive0,id=dev0",
 125                       qvirtio_get_dev_type());
 126
 127     /*
 128      * Delete the drive, and then the device
 129      * Doing it in this order takes notoriously tricky special paths
 130      */
 131     drive_del(qts);
 132     device_del(qts);
 133
 134     qtest_quit(qts);
 135 }
 136
 137 int main(int argc, char **argv)
 138 {
 139     g_test_init(&argc, &argv, NULL);
 140
 141     qtest_add_func("/drive_del/without-dev", test_drive_without_dev);
 142
 143     if (qvirtio_get_dev_type() != NULL) {
 144         qtest_add_func("/drive_del/after_failed_device_add",
 145                        test_after_failed_device_add);
 146         qtest_add_func("/blockdev/drive_del_device_del",
 147                        test_drive_del_device_del);
 148     }
 149
 150     return g_test_run();
 151 }