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 #include "qapi/qmp/qlist.h"
  18
  19 static bool look_for_drive0(QTestState *qts, const char *command, const char *key)
  20 {
  21     QDict *response;
  22     QList *ret;
  23     QListEntry *entry;
  24     bool found;
  25
  26     response = qtest_qmp(qts, "{'execute': %s}", command);
  27     g_assert(response && qdict_haskey(response, "return"));
  28     ret = qdict_get_qlist(response, "return");
  29
  30     found = false;
  31     QLIST_FOREACH_ENTRY(ret, entry) {
  32         QDict *entry_dict = qobject_to(QDict, entry->value);
  33         if (!strcmp(qdict_get_str(entry_dict, key), "drive0")) {
  34             found = true;
  35             break;
  36         }
  37     }
  38
  39     qobject_unref(response);
  40     return found;
  41 }
  42
  43 static bool has_drive(QTestState *qts)
  44 {
  45     return look_for_drive0(qts, "query-block", "device");
  46 }
  47
  48 static bool has_blockdev(QTestState *qts)
  49 {
  50     return look_for_drive0(qts, "query-named-block-nodes", "node-name");
  51 }
  52
  53 static void blockdev_add_with_media(QTestState *qts)
  54 {
  55     QDict *response;
  56
  57     response = qtest_qmp(qts,
  58                          "{ 'execute': 'blockdev-add',"
  59                          "  'arguments': {"
  60                          "      'driver': 'raw',"
  61                          "      'node-name': 'drive0',"
  62                          "      'file': {"
  63                          "          'driver': 'null-co',"
  64                          "          'read-zeroes': true"
  65                          "      }"
  66                          "  }"
  67                          "}");
  68
  69     g_assert(response);
  70     g_assert(qdict_haskey(response, "return"));
  71     qobject_unref(response);
  72     g_assert(has_blockdev(qts));
  73 }
  74
  75 static void drive_add(QTestState *qts)
  76 {
  77     char *resp = qtest_hmp(qts, "drive_add 0 if=none,id=drive0");
  78
  79     g_assert_cmpstr(resp, ==, "OK\r\n");
  80     g_assert(has_drive(qts));
  81     g_free(resp);
  82 }
  83
  84 static void drive_add_with_media(QTestState *qts)
  85 {
  86     char *resp = qtest_hmp(qts,
  87                            "drive_add 0 if=none,id=drive0,file=null-co://,"
  88                            "file.read-zeroes=on,format=raw");
  89
  90     g_assert_cmpstr(resp, ==, "OK\r\n");
  91     g_assert(has_drive(qts));
  92     g_free(resp);
  93 }
  94
  95 static void drive_del(QTestState *qts)
  96 {
  97     char *resp;
  98
  99     g_assert(has_drive(qts));
 100     resp = qtest_hmp(qts, "drive_del drive0");
 101     g_assert_cmpstr(resp, ==, "");
 102     g_assert(!has_drive(qts));
 103     g_free(resp);
 104 }
 105
 106 /*
 107  * qvirtio_get_dev_type:
 108  * Returns: the preferred virtio bus/device type for the current architecture.
 109  * TODO: delete this
 110  */
 111 static const char *qvirtio_get_dev_type(void)
 112 {
 113     const char *arch = qtest_get_arch();
 114
 115     if (g_str_equal(arch, "arm") || g_str_equal(arch, "aarch64")) {
 116         return "device";  /* for virtio-mmio */
 117     } else if (g_str_equal(arch, "s390x")) {
 118         return "ccw";
 119     } else {
 120         return "pci";
 121     }
 122 }
 123
 124 static void device_add(QTestState *qts)
 125 {
 126     QDict *response;
 127     char driver[32];
 128     snprintf(driver, sizeof(driver), "virtio-blk-%s",
 129              qvirtio_get_dev_type());
 130
 131     response = qtest_qmp(qts, "{'execute': 'device_add',"
 132                               " 'arguments': {"
 133                               "   'driver': %s,"
 134                               "   'drive': 'drive0',"
 135                               "   'id': 'dev0'"
 136                               "}}", driver);
 137     g_assert(response);
 138     g_assert(qdict_haskey(response, "return"));
 139     qobject_unref(response);
 140 }
 141
 142 static void device_del(QTestState *qts, bool and_reset)
 143 {
 144     QDict *response;
 145
 146     response = qtest_qmp(qts, "{'execute': 'device_del',"
 147                          " 'arguments': { 'id': 'dev0' } }");
 148     g_assert(response);
 149     g_assert(qdict_haskey(response, "return"));
 150     qobject_unref(response);
 151
 152     if (and_reset) {
 153         response = qtest_qmp(qts, "{'execute': 'system_reset' }");
 154         g_assert(response);
 155         g_assert(qdict_haskey(response, "return"));
 156         qobject_unref(response);
 157     }
 158
 159     qtest_qmp_eventwait(qts, "DEVICE_DELETED");
 160 }
 161
 162 static void test_drive_without_dev(void)
 163 {
 164     QTestState *qts;
 165
 166     /* Start with an empty drive */
 167     qts = qtest_init("-drive if=none,id=drive0");
 168
 169     /* Delete the drive */
 170     drive_del(qts);
 171
 172     /* Ensure re-adding the drive works - there should be no duplicate ID error
 173      * because the old drive must be gone.
 174      */
 175     drive_add(qts);
 176
 177     qtest_quit(qts);
 178 }
 179
 180 static void test_after_failed_device_add(void)
 181 {
 182     char driver[32];
 183     QDict *response;
 184     QTestState *qts;
 185
 186     snprintf(driver, sizeof(driver), "virtio-blk-%s",
 187              qvirtio_get_dev_type());
 188
 189     qts = qtest_init("-drive if=none,id=drive0");
 190
 191     /* Make device_add fail. If this leaks the virtio-blk device then a
 192      * reference to drive0 will also be held (via qdev properties).
 193      */
 194     response = qtest_qmp(qts, "{'execute': 'device_add',"
 195                               " 'arguments': {"
 196                               "   'driver': %s,"
 197                               "   'drive': 'drive0'"
 198                               "}}", driver);
 199     g_assert(response);
 200     qmp_expect_error_and_unref(response, "GenericError");
 201
 202     /* Delete the drive */
 203     drive_del(qts);
 204
 205     /* Try to re-add the drive.  This fails with duplicate IDs if a leaked
 206      * virtio-blk device exists that holds a reference to the old drive0.
 207      */
 208     drive_add(qts);
 209
 210     qtest_quit(qts);
 211 }
 212
 213 static void test_drive_del_device_del(void)
 214 {
 215     QTestState *qts;
 216
 217     /* Start with a drive used by a device that unplugs instantaneously */
 218     qts = qtest_initf("-drive if=none,id=drive0,file=null-co://,"
 219                       "file.read-zeroes=on,format=raw"
 220                       " -device virtio-scsi-%s"
 221                       " -device scsi-hd,drive=drive0,id=dev0",
 222                       qvirtio_get_dev_type());
 223
 224     /*
 225      * Delete the drive, and then the device
 226      * Doing it in this order takes notoriously tricky special paths
 227      */
 228     drive_del(qts);
 229     device_del(qts, false);
 230     g_assert(!has_drive(qts));
 231
 232     qtest_quit(qts);
 233 }
 234
 235 static void test_cli_device_del(void)
 236 {
 237     QTestState *qts;
 238
 239     /*
 240      * -drive/-device and device_del.  Start with a drive used by a
 241      * device that unplugs after reset.
 242      */
 243     qts = qtest_initf("-drive if=none,id=drive0,file=null-co://,"
 244                       "file.read-zeroes=on,format=raw"
 245                       " -device virtio-blk-%s,drive=drive0,id=dev0",
 246                       qvirtio_get_dev_type());
 247
 248     device_del(qts, true);
 249     g_assert(!has_drive(qts));
 250
 251     qtest_quit(qts);
 252 }
 253
 254 static void test_empty_device_del(void)
 255 {
 256     QTestState *qts;
 257
 258     /* device_del with no drive plugged.  */
 259     qts = qtest_initf("-device virtio-scsi-%s -device scsi-cd,id=dev0",
 260                       qvirtio_get_dev_type());
 261
 262     device_del(qts, false);
 263     qtest_quit(qts);
 264 }
 265
 266 static void test_device_add_and_del(void)
 267 {
 268     QTestState *qts;
 269
 270     /*
 271      * -drive/device_add and device_del.  Start with a drive used by a
 272      * device that unplugs after reset.
 273      */
 274     qts = qtest_init("-drive if=none,id=drive0,file=null-co://,"
 275                      "file.read-zeroes=on,format=raw");
 276
 277     device_add(qts);
 278     device_del(qts, true);
 279     g_assert(!has_drive(qts));
 280
 281     qtest_quit(qts);
 282 }
 283
 284 static void test_drive_add_device_add_and_del(void)
 285 {
 286     QTestState *qts;
 287
 288     qts = qtest_init("");
 289
 290     /*
 291      * drive_add/device_add and device_del.  The drive is used by a
 292      * device that unplugs after reset.
 293      */
 294     drive_add_with_media(qts);
 295     device_add(qts);
 296     device_del(qts, true);
 297     g_assert(!has_drive(qts));
 298
 299     qtest_quit(qts);
 300 }
 301
 302 static void test_blockdev_add_device_add_and_del(void)
 303 {
 304     QTestState *qts;
 305
 306     qts = qtest_init("");
 307
 308     /*
 309      * blockdev_add/device_add and device_del.  The it drive is used by a
 310      * device that unplugs after reset, but it doesn't go away.
 311      */
 312     blockdev_add_with_media(qts);
 313     device_add(qts);
 314     device_del(qts, true);
 315     g_assert(has_blockdev(qts));
 316
 317     qtest_quit(qts);
 318 }
 319
 320 int main(int argc, char **argv)
 321 {
 322     g_test_init(&argc, &argv, NULL);
 323
 324     qtest_add_func("/drive_del/without-dev", test_drive_without_dev);
 325
 326     if (qvirtio_get_dev_type() != NULL) {
 327         qtest_add_func("/drive_del/after_failed_device_add",
 328                        test_after_failed_device_add);
 329         qtest_add_func("/drive_del/drive_del_device_del",
 330                        test_drive_del_device_del);
 331         qtest_add_func("/device_del/drive/cli_device",
 332                        test_cli_device_del);
 333         qtest_add_func("/device_del/drive/device_add",
 334                        test_device_add_and_del);
 335         qtest_add_func("/device_del/drive/drive_add_device_add",
 336                        test_drive_add_device_add_and_del);
 337         qtest_add_func("/device_del/empty",
 338                        test_empty_device_del);
 339         qtest_add_func("/device_del/blockdev",
 340                        test_blockdev_add_device_add_and_del);
 341     }
 342
 343     return g_test_run();
 344 }