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 "libqtest.h"
  15 #include "libqos/virtio.h"
  16 #include "qapi/qmp/qdict.h"
  17 #include "qapi/qmp/qlist.h"
  18
  19 static const char *qvirtio_get_dev_type(void);
  20
  21 static bool look_for_drive0(QTestState *qts, const char *command, const char *key)
  22 {
  23     QDict *response;
  24     QList *ret;
  25     QListEntry *entry;
  26     bool found;
  27
  28     response = qtest_qmp(qts, "{'execute': %s}", command);
  29     g_assert(response && qdict_haskey(response, "return"));
  30     ret = qdict_get_qlist(response, "return");
  31
  32     found = false;
  33     QLIST_FOREACH_ENTRY(ret, entry) {
  34         QDict *entry_dict = qobject_to(QDict, entry->value);
  35         if (!strcmp(qdict_get_str(entry_dict, key), "drive0")) {
  36             found = true;
  37             break;
  38         }
  39     }
  40
  41     qobject_unref(response);
  42     return found;
  43 }
  44
  45 /*
  46  * This covers the possible absence of a device due to QEMU build
  47  * options.
  48  */
  49 static bool has_device_builtin(const char *dev)
  50 {
  51     gchar *device = g_strdup_printf("%s-%s", dev, qvirtio_get_dev_type());
  52     bool rc = qtest_has_device(device);
  53
  54     g_free(device);
  55     return rc;
  56 }
  57
  58 static bool has_drive(QTestState *qts)
  59 {
  60     return look_for_drive0(qts, "query-block", "device");
  61 }
  62
  63 static bool has_blockdev(QTestState *qts)
  64 {
  65     return look_for_drive0(qts, "query-named-block-nodes", "node-name");
  66 }
  67
  68 static void blockdev_add_with_media(QTestState *qts)
  69 {
  70     QDict *response;
  71
  72     response = qtest_qmp(qts,
  73                          "{ 'execute': 'blockdev-add',"
  74                          "  'arguments': {"
  75                          "      'driver': 'raw',"
  76                          "      'node-name': 'drive0',"
  77                          "      'file': {"
  78                          "          'driver': 'null-co',"
  79                          "          'read-zeroes': true"
  80                          "      }"
  81                          "  }"
  82                          "}");
  83
  84     g_assert(response);
  85     g_assert(qdict_haskey(response, "return"));
  86     qobject_unref(response);
  87     g_assert(has_blockdev(qts));
  88 }
  89
  90 static void drive_add(QTestState *qts)
  91 {
  92     char *resp = qtest_hmp(qts, "drive_add 0 if=none,id=drive0");
  93
  94     g_assert_cmpstr(resp, ==, "OK\r\n");
  95     g_assert(has_drive(qts));
  96     g_free(resp);
  97 }
  98
  99 static void drive_add_with_media(QTestState *qts)
 100 {
 101     char *resp = qtest_hmp(qts,
 102                            "drive_add 0 if=none,id=drive0,file=null-co://,"
 103                            "file.read-zeroes=on,format=raw");
 104
 105     g_assert_cmpstr(resp, ==, "OK\r\n");
 106     g_assert(has_drive(qts));
 107     g_free(resp);
 108 }
 109
 110 static void drive_del(QTestState *qts)
 111 {
 112     char *resp;
 113
 114     g_assert(has_drive(qts));
 115     resp = qtest_hmp(qts, "drive_del drive0");
 116     g_assert_cmpstr(resp, ==, "");
 117     g_assert(!has_drive(qts));
 118     g_free(resp);
 119 }
 120
 121 /*
 122  * qvirtio_get_dev_type:
 123  * Returns: the preferred virtio bus/device type for the current architecture.
 124  * TODO: delete this
 125  */
 126 static const char *qvirtio_get_dev_type(void)
 127 {
 128     const char *arch = qtest_get_arch();
 129
 130     if (g_str_equal(arch, "arm") || g_str_equal(arch, "aarch64")) {
 131         return "device";  /* for virtio-mmio */
 132     } else if (g_str_equal(arch, "s390x")) {
 133         return "ccw";
 134     } else {
 135         return "pci";
 136     }
 137 }
 138
 139 static void device_add(QTestState *qts)
 140 {
 141     g_autofree char *driver = g_strdup_printf("virtio-blk-%s",
 142                                               qvirtio_get_dev_type());
 143     QDict *response =
 144                qtest_qmp(qts, "{'execute': 'device_add',"
 145                               " 'arguments': {"
 146                               "   'driver': %s,"
 147                               "   'drive': 'drive0',"
 148                               "   'id': 'dev0'"
 149                               "}}", driver);
 150     g_assert(response);
 151     g_assert(qdict_haskey(response, "return"));
 152     qobject_unref(response);
 153 }
 154
 155 static void device_del(QTestState *qts, bool and_reset)
 156 {
 157     QDict *response;
 158
 159     qtest_qmp_device_del_send(qts, "dev0");
 160
 161     if (and_reset) {
 162         response = qtest_qmp(qts, "{'execute': 'system_reset' }");
 163         g_assert(response);
 164         g_assert(qdict_haskey(response, "return"));
 165         qobject_unref(response);
 166     }
 167
 168     qtest_qmp_eventwait(qts, "DEVICE_DELETED");
 169 }
 170
 171 static void test_drive_without_dev(void)
 172 {
 173     QTestState *qts;
 174
 175     /* Start with an empty drive */
 176     qts = qtest_init("-drive if=none,id=drive0 -M none");
 177
 178     /* Delete the drive */
 179     drive_del(qts);
 180
 181     /* Ensure re-adding the drive works - there should be no duplicate ID error
 182      * because the old drive must be gone.
 183      */
 184     drive_add(qts);
 185
 186     qtest_quit(qts);
 187 }
 188
 189 static void test_after_failed_device_add(void)
 190 {
 191     char driver[32];
 192     QDict *response;
 193     QTestState *qts;
 194
 195     if (!has_device_builtin("virtio-blk")) {
 196         g_test_skip("Device virtio-blk is not available");
 197         return;
 198     }
 199
 200     snprintf(driver, sizeof(driver), "virtio-blk-%s",
 201              qvirtio_get_dev_type());
 202
 203     qts = qtest_init("-drive if=none,id=drive0");
 204
 205     /* Make device_add fail. If this leaks the virtio-blk device then a
 206      * reference to drive0 will also be held (via qdev properties).
 207      */
 208     response = qtest_qmp(qts, "{'execute': 'device_add',"
 209                               " 'arguments': {"
 210                               "   'driver': %s,"
 211                               "   'drive': 'drive0'"
 212                               "}}", driver);
 213     g_assert(response);
 214     qmp_expect_error_and_unref(response, "GenericError");
 215
 216     /* Delete the drive */
 217     drive_del(qts);
 218
 219     /* Try to re-add the drive.  This fails with duplicate IDs if a leaked
 220      * virtio-blk device exists that holds a reference to the old drive0.
 221      */
 222     drive_add(qts);
 223
 224     qtest_quit(qts);
 225 }
 226
 227 static void test_drive_del_device_del(void)
 228 {
 229     QTestState *qts;
 230
 231     if (!has_device_builtin("virtio-scsi")) {
 232         g_test_skip("Device virtio-scsi is not available");
 233         return;
 234     }
 235
 236     /* Start with a drive used by a device that unplugs instantaneously */
 237     qts = qtest_initf("-drive if=none,id=drive0,file=null-co://,"
 238                       "file.read-zeroes=on,format=raw"
 239                       " -device virtio-scsi-%s"
 240                       " -device scsi-hd,drive=drive0,id=dev0",
 241                       qvirtio_get_dev_type());
 242
 243     /*
 244      * Delete the drive, and then the device
 245      * Doing it in this order takes notoriously tricky special paths
 246      */
 247     drive_del(qts);
 248     device_del(qts, false);
 249     g_assert(!has_drive(qts));
 250
 251     qtest_quit(qts);
 252 }
 253
 254 static void test_cli_device_del(void)
 255 {
 256     QTestState *qts;
 257     const char *arch = qtest_get_arch();
 258     const char *machine_addition = "";
 259
 260     if (!has_device_builtin("virtio-blk")) {
 261         g_test_skip("Device virtio-blk is not available");
 262         return;
 263     }
 264
 265     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
 266         machine_addition = "-machine pc";
 267     }
 268
 269     /*
 270      * -drive/-device and device_del.  Start with a drive used by a
 271      * device that unplugs after reset.
 272      */
 273     qts = qtest_initf("%s -drive if=none,id=drive0,file=null-co://,"
 274                       "file.read-zeroes=on,format=raw"
 275                       " -device virtio-blk-%s,drive=drive0,id=dev0",
 276                       machine_addition,
 277                       qvirtio_get_dev_type());
 278
 279     device_del(qts, true);
 280     g_assert(!has_drive(qts));
 281
 282     qtest_quit(qts);
 283 }
 284
 285 static void test_cli_device_del_q35(void)
 286 {
 287     QTestState *qts;
 288
 289     if (!has_device_builtin("virtio-blk")) {
 290         g_test_skip("Device virtio-blk is not available");
 291         return;
 292     }
 293
 294     /*
 295      * -drive/-device and device_del.  Start with a drive used by a
 296      * device that unplugs after reset.
 297      */
 298     qts = qtest_initf("-drive if=none,id=drive0,file=null-co://,"
 299                       "file.read-zeroes=on,format=raw "
 300                       "-machine q35 -device pcie-root-port,id=p1 "
 301                       "-device pcie-pci-bridge,bus=p1,id=b1 "
 302                       "-device virtio-blk-%s,drive=drive0,bus=b1,id=dev0",
 303                       qvirtio_get_dev_type());
 304
 305     device_del(qts, true);
 306     g_assert(!has_drive(qts));
 307
 308     qtest_quit(qts);
 309 }
 310
 311 static void test_empty_device_del(void)
 312 {
 313     QTestState *qts;
 314
 315     if (!has_device_builtin("virtio-scsi")) {
 316         g_test_skip("Device virtio-scsi is not available");
 317         return;
 318     }
 319
 320     /* device_del with no drive plugged.  */
 321     qts = qtest_initf("-device virtio-scsi-%s -device scsi-cd,id=dev0",
 322                       qvirtio_get_dev_type());
 323
 324     device_del(qts, false);
 325     qtest_quit(qts);
 326 }
 327
 328 static void test_device_add_and_del(void)
 329 {
 330     QTestState *qts;
 331     const char *arch = qtest_get_arch();
 332     const char *machine_addition = "";
 333
 334     if (!has_device_builtin("virtio-blk")) {
 335         g_test_skip("Device virtio-blk is not available");
 336         return;
 337     }
 338
 339     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
 340         machine_addition = "-machine pc";
 341     }
 342
 343     /*
 344      * -drive/device_add and device_del.  Start with a drive used by a
 345      * device that unplugs after reset.
 346      */
 347     qts = qtest_initf("%s -drive if=none,id=drive0,file=null-co://,"
 348                      "file.read-zeroes=on,format=raw", machine_addition);
 349
 350     device_add(qts);
 351     device_del(qts, true);
 352     g_assert(!has_drive(qts));
 353
 354     qtest_quit(qts);
 355 }
 356
 357 static void device_add_q35(QTestState *qts)
 358 {
 359     g_autofree char *driver = g_strdup_printf("virtio-blk-%s",
 360                                               qvirtio_get_dev_type());
 361     QDict *response =
 362                qtest_qmp(qts, "{'execute': 'device_add',"
 363                               " 'arguments': {"
 364                               "   'driver': %s,"
 365                               "   'drive': 'drive0',"
 366                               "   'id': 'dev0',"
 367                               "   'bus': 'b1'"
 368                               "}}", driver);
 369     g_assert(response);
 370     g_assert(qdict_haskey(response, "return"));
 371     qobject_unref(response);
 372 }
 373
 374 static void test_device_add_and_del_q35(void)
 375 {
 376     QTestState *qts;
 377
 378     if (!has_device_builtin("virtio-blk")) {
 379         g_test_skip("Device virtio-blk is not available");
 380         return;
 381     }
 382
 383     /*
 384      * -drive/device_add and device_del.  Start with a drive used by a
 385      * device that unplugs after reset.
 386      */
 387     qts = qtest_initf("-machine q35 -device pcie-root-port,id=p1 "
 388                      "-device pcie-pci-bridge,bus=p1,id=b1 "
 389                      "-drive if=none,id=drive0,file=null-co://,"
 390                      "file.read-zeroes=on,format=raw");
 391
 392     device_add_q35(qts);
 393     device_del(qts, true);
 394     g_assert(!has_drive(qts));
 395
 396     qtest_quit(qts);
 397 }
 398
 399 static void test_drive_add_device_add_and_del(void)
 400 {
 401     QTestState *qts;
 402     const char *arch = qtest_get_arch();
 403     const char *machine_addition = "";
 404
 405     if (!has_device_builtin("virtio-blk")) {
 406         g_test_skip("Device virtio-blk is not available");
 407         return;
 408     }
 409
 410     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
 411         machine_addition = "-machine pc";
 412     }
 413
 414     qts = qtest_init(machine_addition);
 415
 416     /*
 417      * drive_add/device_add and device_del.  The drive is used by a
 418      * device that unplugs after reset.
 419      */
 420     drive_add_with_media(qts);
 421     device_add(qts);
 422     device_del(qts, true);
 423     g_assert(!has_drive(qts));
 424
 425     qtest_quit(qts);
 426 }
 427
 428 static void test_drive_add_device_add_and_del_q35(void)
 429 {
 430     QTestState *qts;
 431
 432     if (!has_device_builtin("virtio-blk")) {
 433         g_test_skip("Device virtio-blk is not available");
 434         return;
 435     }
 436
 437     qts = qtest_init("-machine q35 -device pcie-root-port,id=p1 "
 438                      "-device pcie-pci-bridge,bus=p1,id=b1");
 439
 440     /*
 441      * drive_add/device_add and device_del.  The drive is used by a
 442      * device that unplugs after reset.
 443      */
 444     drive_add_with_media(qts);
 445     device_add_q35(qts);
 446     device_del(qts, true);
 447     g_assert(!has_drive(qts));
 448
 449     qtest_quit(qts);
 450 }
 451
 452 static void test_blockdev_add_device_add_and_del(void)
 453 {
 454     QTestState *qts;
 455     const char *arch = qtest_get_arch();
 456     const char *machine_addition = "";
 457
 458     if (!has_device_builtin("virtio-blk")) {
 459         g_test_skip("Device virtio-blk is not available");
 460         return;
 461     }
 462
 463     if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
 464         machine_addition = "-machine pc";
 465     }
 466
 467     qts = qtest_init(machine_addition);
 468
 469     /*
 470      * blockdev_add/device_add and device_del. The drive is used by a
 471      * device that unplugs after reset, but it doesn't go away.
 472      */
 473     blockdev_add_with_media(qts);
 474     device_add(qts);
 475     device_del(qts, true);
 476     g_assert(has_blockdev(qts));
 477
 478     qtest_quit(qts);
 479 }
 480
 481 static void test_blockdev_add_device_add_and_del_q35(void)
 482 {
 483     QTestState *qts;
 484
 485     if (!has_device_builtin("virtio-blk")) {
 486         g_test_skip("Device virtio-blk is not available");
 487         return;
 488     }
 489
 490     qts = qtest_init("-machine q35 -device pcie-root-port,id=p1 "
 491                      "-device pcie-pci-bridge,bus=p1,id=b1");
 492
 493     /*
 494      * blockdev_add/device_add and device_del. The drive is used by a
 495      * device that unplugs after reset, but it doesn't go away.
 496      */
 497     blockdev_add_with_media(qts);
 498     device_add_q35(qts);
 499     device_del(qts, true);
 500     g_assert(has_blockdev(qts));
 501
 502     qtest_quit(qts);
 503 }
 504
 505 int main(int argc, char **argv)
 506 {
 507     g_test_init(&argc, &argv, NULL);
 508
 509     qtest_add_func("/drive_del/without-dev", test_drive_without_dev);
 510
 511     if (qvirtio_get_dev_type() != NULL) {
 512         qtest_add_func("/drive_del/after_failed_device_add",
 513                        test_after_failed_device_add);
 514         qtest_add_func("/drive_del/drive_del_device_del",
 515                        test_drive_del_device_del);
 516         qtest_add_func("/device_del/drive/cli_device",
 517                        test_cli_device_del);
 518         qtest_add_func("/device_del/drive/device_add",
 519                        test_device_add_and_del);
 520         qtest_add_func("/device_del/drive/drive_add_device_add",
 521                        test_drive_add_device_add_and_del);
 522         qtest_add_func("/device_del/empty",
 523                        test_empty_device_del);
 524         qtest_add_func("/device_del/blockdev",
 525                        test_blockdev_add_device_add_and_del);
 526
 527         if (qtest_has_machine("q35")) {
 528             qtest_add_func("/device_del/drive/cli_device_q35",
 529                            test_cli_device_del_q35);
 530             qtest_add_func("/device_del/drive/device_add_q35",
 531                            test_device_add_and_del_q35);
 532             qtest_add_func("/device_del/drive/drive_add_device_add_q35",
 533                            test_drive_add_device_add_and_del_q35);
 534             qtest_add_func("/device_del/blockdev_q35",
 535                            test_blockdev_add_device_add_and_del_q35);
 536         }
 537     }
 538
 539     return g_test_run();
 540 }