tests/virtio-9p-test.c

   1 /*
   2  * QTest testcase for VirtIO 9P
   3  *
   4  * Copyright (c) 2014 SUSE LINUX Products GmbH
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  */
   9
  10 #include "qemu/osdep.h"
  11 #include "libqtest.h"
  12 #include "hw/9pfs/9p.h"
  13 #include "hw/9pfs/9p-synth.h"
  14 #include "libqos/virtio-9p.h"
  15 #include "libqos/qgraph.h"
  16
  17 #define QVIRTIO_9P_TIMEOUT_US (10 * 1000 * 1000)
  18 static QGuestAllocator *alloc;
  19
  20 static void pci_config(void *obj, void *data, QGuestAllocator *t_alloc)
  21 {
  22     QVirtio9P *v9p = obj;
  23     alloc = t_alloc;
  24     size_t tag_len = qvirtio_config_readw(v9p->vdev, 0);
  25     char *tag;
  26     int i;
  27
  28     g_assert_cmpint(tag_len, ==, strlen(MOUNT_TAG));
  29
  30     tag = g_malloc(tag_len);
  31     for (i = 0; i < tag_len; i++) {
  32         tag[i] = qvirtio_config_readb(v9p->vdev, i + 2);
  33     }
  34     g_assert_cmpmem(tag, tag_len, MOUNT_TAG, tag_len);
  35     g_free(tag);
  36 }
  37
  38 #define P9_MAX_SIZE 4096 /* Max size of a T-message or R-message */
  39
  40 typedef struct {
  41     QVirtio9P *v9p;
  42     uint16_t tag;
  43     uint64_t t_msg;
  44     uint32_t t_size;
  45     uint64_t r_msg;
  46     /* No r_size, it is hardcoded to P9_MAX_SIZE */
  47     size_t t_off;
  48     size_t r_off;
  49     uint32_t free_head;
  50 } P9Req;
  51
  52 static void v9fs_memwrite(P9Req *req, const void *addr, size_t len)
  53 {
  54     memwrite(req->t_msg + req->t_off, addr, len);
  55     req->t_off += len;
  56 }
  57
  58 static void v9fs_memskip(P9Req *req, size_t len)
  59 {
  60     req->r_off += len;
  61 }
  62
  63 static void v9fs_memread(P9Req *req, void *addr, size_t len)
  64 {
  65     memread(req->r_msg + req->r_off, addr, len);
  66     req->r_off += len;
  67 }
  68
  69 static void v9fs_uint16_write(P9Req *req, uint16_t val)
  70 {
  71     uint16_t le_val = cpu_to_le16(val);
  72
  73     v9fs_memwrite(req, &le_val, 2);
  74 }
  75
  76 static void v9fs_uint16_read(P9Req *req, uint16_t *val)
  77 {
  78     v9fs_memread(req, val, 2);
  79     le16_to_cpus(val);
  80 }
  81
  82 static void v9fs_uint32_write(P9Req *req, uint32_t val)
  83 {
  84     uint32_t le_val = cpu_to_le32(val);
  85
  86     v9fs_memwrite(req, &le_val, 4);
  87 }
  88
  89 static void v9fs_uint64_write(P9Req *req, uint64_t val)
  90 {
  91     uint64_t le_val = cpu_to_le64(val);
  92
  93     v9fs_memwrite(req, &le_val, 8);
  94 }
  95
  96 static void v9fs_uint32_read(P9Req *req, uint32_t *val)
  97 {
  98     v9fs_memread(req, val, 4);
  99     le32_to_cpus(val);
 100 }
 101
 102 /* len[2] string[len] */
 103 static uint16_t v9fs_string_size(const char *string)
 104 {
 105     size_t len = strlen(string);
 106
 107     g_assert_cmpint(len, <=, UINT16_MAX - 2);
 108
 109     return 2 + len;
 110 }
 111
 112 static void v9fs_string_write(P9Req *req, const char *string)
 113 {
 114     int len = strlen(string);
 115
 116     g_assert_cmpint(len, <=, UINT16_MAX);
 117
 118     v9fs_uint16_write(req, (uint16_t) len);
 119     v9fs_memwrite(req, string, len);
 120 }
 121
 122 static void v9fs_string_read(P9Req *req, uint16_t *len, char **string)
 123 {
 124     uint16_t local_len;
 125
 126     v9fs_uint16_read(req, &local_len);
 127     if (len) {
 128         *len = local_len;
 129     }
 130     if (string) {
 131         *string = g_malloc(local_len);
 132         v9fs_memread(req, *string, local_len);
 133     } else {
 134         v9fs_memskip(req, local_len);
 135     }
 136 }
 137
 138  typedef struct {
 139     uint32_t size;
 140     uint8_t id;
 141     uint16_t tag;
 142 } QEMU_PACKED P9Hdr;
 143
 144 static P9Req *v9fs_req_init(QVirtio9P *v9p, uint32_t size, uint8_t id,
 145                             uint16_t tag)
 146 {
 147     P9Req *req = g_new0(P9Req, 1);
 148     uint32_t total_size = 7; /* 9P header has well-known size of 7 bytes */
 149     P9Hdr hdr = {
 150         .id = id,
 151         .tag = cpu_to_le16(tag)
 152     };
 153
 154     g_assert_cmpint(total_size, <=, UINT32_MAX - size);
 155     total_size += size;
 156     hdr.size = cpu_to_le32(total_size);
 157
 158     g_assert_cmpint(total_size, <=, P9_MAX_SIZE);
 159
 160     req->v9p = v9p;
 161     req->t_size = total_size;
 162     req->t_msg = guest_alloc(alloc, req->t_size);
 163     v9fs_memwrite(req, &hdr, 7);
 164     req->tag = tag;
 165     return req;
 166 }
 167
 168 static void v9fs_req_send(P9Req *req)
 169 {
 170     QVirtio9P *v9p = req->v9p;
 171
 172     req->r_msg = guest_alloc(alloc, P9_MAX_SIZE);
 173     req->free_head = qvirtqueue_add(v9p->vq, req->t_msg, req->t_size, false,
 174                                     true);
 175     qvirtqueue_add(v9p->vq, req->r_msg, P9_MAX_SIZE, true, false);
 176     qvirtqueue_kick(v9p->vdev, v9p->vq, req->free_head);
 177     req->t_off = 0;
 178 }
 179
 180 static const char *rmessage_name(uint8_t id)
 181 {
 182     return
 183         id == P9_RLERROR ? "RLERROR" :
 184         id == P9_RVERSION ? "RVERSION" :
 185         id == P9_RATTACH ? "RATTACH" :
 186         id == P9_RWALK ? "RWALK" :
 187         id == P9_RLOPEN ? "RLOPEN" :
 188         id == P9_RWRITE ? "RWRITE" :
 189         id == P9_RFLUSH ? "RFLUSH" :
 190         "<unknown>";
 191 }
 192
 193 static void v9fs_req_wait_for_reply(P9Req *req, uint32_t *len)
 194 {
 195     QVirtio9P *v9p = req->v9p;
 196
 197     qvirtio_wait_used_elem(v9p->vdev, v9p->vq, req->free_head, len,
 198                            QVIRTIO_9P_TIMEOUT_US);
 199 }
 200
 201 static void v9fs_req_recv(P9Req *req, uint8_t id)
 202 {
 203     P9Hdr hdr;
 204
 205     v9fs_memread(req, &hdr, 7);
 206     hdr.size = ldl_le_p(&hdr.size);
 207     hdr.tag = lduw_le_p(&hdr.tag);
 208
 209     g_assert_cmpint(hdr.size, >=, 7);
 210     g_assert_cmpint(hdr.size, <=, P9_MAX_SIZE);
 211     g_assert_cmpint(hdr.tag, ==, req->tag);
 212
 213     if (hdr.id != id) {
 214         g_printerr("Received response %d (%s) instead of %d (%s)\n",
 215                    hdr.id, rmessage_name(hdr.id), id, rmessage_name(id));
 216
 217         if (hdr.id == P9_RLERROR) {
 218             uint32_t err;
 219             v9fs_uint32_read(req, &err);
 220             g_printerr("Rlerror has errno %d (%s)\n", err, strerror(err));
 221         }
 222     }
 223     g_assert_cmpint(hdr.id, ==, id);
 224 }
 225
 226 static void v9fs_req_free(P9Req *req)
 227 {
 228     guest_free(alloc, req->t_msg);
 229     guest_free(alloc, req->r_msg);
 230     g_free(req);
 231 }
 232
 233 /* size[4] Rlerror tag[2] ecode[4] */
 234 static void v9fs_rlerror(P9Req *req, uint32_t *err)
 235 {
 236     v9fs_req_recv(req, P9_RLERROR);
 237     v9fs_uint32_read(req, err);
 238     v9fs_req_free(req);
 239 }
 240
 241 /* size[4] Tversion tag[2] msize[4] version[s] */
 242 static P9Req *v9fs_tversion(QVirtio9P *v9p, uint32_t msize, const char *version,
 243                             uint16_t tag)
 244 {
 245     P9Req *req;
 246     uint32_t body_size = 4;
 247     uint16_t string_size = v9fs_string_size(version);
 248
 249     g_assert_cmpint(body_size, <=, UINT32_MAX - string_size);
 250     body_size += string_size;
 251     req = v9fs_req_init(v9p, body_size, P9_TVERSION, tag);
 252
 253     v9fs_uint32_write(req, msize);
 254     v9fs_string_write(req, version);
 255     v9fs_req_send(req);
 256     return req;
 257 }
 258
 259 /* size[4] Rversion tag[2] msize[4] version[s] */
 260 static void v9fs_rversion(P9Req *req, uint16_t *len, char **version)
 261 {
 262     uint32_t msize;
 263
 264     v9fs_req_recv(req, P9_RVERSION);
 265     v9fs_uint32_read(req, &msize);
 266
 267     g_assert_cmpint(msize, ==, P9_MAX_SIZE);
 268
 269     if (len || version) {
 270         v9fs_string_read(req, len, version);
 271     }
 272
 273     v9fs_req_free(req);
 274 }
 275
 276 /* size[4] Tattach tag[2] fid[4] afid[4] uname[s] aname[s] n_uname[4] */
 277 static P9Req *v9fs_tattach(QVirtio9P *v9p, uint32_t fid, uint32_t n_uname,
 278                            uint16_t tag)
 279 {
 280     const char *uname = ""; /* ignored by QEMU */
 281     const char *aname = ""; /* ignored by QEMU */
 282     P9Req *req = v9fs_req_init(v9p, 4 + 4 + 2 + 2 + 4, P9_TATTACH, tag);
 283
 284     v9fs_uint32_write(req, fid);
 285     v9fs_uint32_write(req, P9_NOFID);
 286     v9fs_string_write(req, uname);
 287     v9fs_string_write(req, aname);
 288     v9fs_uint32_write(req, n_uname);
 289     v9fs_req_send(req);
 290     return req;
 291 }
 292
 293 typedef char v9fs_qid[13];
 294
 295 /* size[4] Rattach tag[2] qid[13] */
 296 static void v9fs_rattach(P9Req *req, v9fs_qid *qid)
 297 {
 298     v9fs_req_recv(req, P9_RATTACH);
 299     if (qid) {
 300         v9fs_memread(req, qid, 13);
 301     }
 302     v9fs_req_free(req);
 303 }
 304
 305 /* size[4] Twalk tag[2] fid[4] newfid[4] nwname[2] nwname*(wname[s]) */
 306 static P9Req *v9fs_twalk(QVirtio9P *v9p, uint32_t fid, uint32_t newfid,
 307                          uint16_t nwname, char *const wnames[], uint16_t tag)
 308 {
 309     P9Req *req;
 310     int i;
 311     uint32_t body_size = 4 + 4 + 2;
 312
 313     for (i = 0; i < nwname; i++) {
 314         uint16_t wname_size = v9fs_string_size(wnames[i]);
 315
 316         g_assert_cmpint(body_size, <=, UINT32_MAX - wname_size);
 317         body_size += wname_size;
 318     }
 319     req = v9fs_req_init(v9p,  body_size, P9_TWALK, tag);
 320     v9fs_uint32_write(req, fid);
 321     v9fs_uint32_write(req, newfid);
 322     v9fs_uint16_write(req, nwname);
 323     for (i = 0; i < nwname; i++) {
 324         v9fs_string_write(req, wnames[i]);
 325     }
 326     v9fs_req_send(req);
 327     return req;
 328 }
 329
 330 /* size[4] Rwalk tag[2] nwqid[2] nwqid*(wqid[13]) */
 331 static void v9fs_rwalk(P9Req *req, uint16_t *nwqid, v9fs_qid **wqid)
 332 {
 333     uint16_t local_nwqid;
 334
 335     v9fs_req_recv(req, P9_RWALK);
 336     v9fs_uint16_read(req, &local_nwqid);
 337     if (nwqid) {
 338         *nwqid = local_nwqid;
 339     }
 340     if (wqid) {
 341         *wqid = g_malloc(local_nwqid * 13);
 342         v9fs_memread(req, *wqid, local_nwqid * 13);
 343     }
 344     v9fs_req_free(req);
 345 }
 346
 347 /* size[4] Tlopen tag[2] fid[4] flags[4] */
 348 static P9Req *v9fs_tlopen(QVirtio9P *v9p, uint32_t fid, uint32_t flags,
 349                           uint16_t tag)
 350 {
 351     P9Req *req;
 352
 353     req = v9fs_req_init(v9p,  4 + 4, P9_TLOPEN, tag);
 354     v9fs_uint32_write(req, fid);
 355     v9fs_uint32_write(req, flags);
 356     v9fs_req_send(req);
 357     return req;
 358 }
 359
 360 /* size[4] Rlopen tag[2] qid[13] iounit[4] */
 361 static void v9fs_rlopen(P9Req *req, v9fs_qid *qid, uint32_t *iounit)
 362 {
 363     v9fs_req_recv(req, P9_RLOPEN);
 364     if (qid) {
 365         v9fs_memread(req, qid, 13);
 366     } else {
 367         v9fs_memskip(req, 13);
 368     }
 369     if (iounit) {
 370         v9fs_uint32_read(req, iounit);
 371     }
 372     v9fs_req_free(req);
 373 }
 374
 375 /* size[4] Twrite tag[2] fid[4] offset[8] count[4] data[count] */
 376 static P9Req *v9fs_twrite(QVirtio9P *v9p, uint32_t fid, uint64_t offset,
 377                           uint32_t count, const void *data, uint16_t tag)
 378 {
 379     P9Req *req;
 380     uint32_t body_size = 4 + 8 + 4;
 381
 382     g_assert_cmpint(body_size, <=, UINT32_MAX - count);
 383     body_size += count;
 384     req = v9fs_req_init(v9p,  body_size, P9_TWRITE, tag);
 385     v9fs_uint32_write(req, fid);
 386     v9fs_uint64_write(req, offset);
 387     v9fs_uint32_write(req, count);
 388     v9fs_memwrite(req, data, count);
 389     v9fs_req_send(req);
 390     return req;
 391 }
 392
 393 /* size[4] Rwrite tag[2] count[4] */
 394 static void v9fs_rwrite(P9Req *req, uint32_t *count)
 395 {
 396     v9fs_req_recv(req, P9_RWRITE);
 397     if (count) {
 398         v9fs_uint32_read(req, count);
 399     }
 400     v9fs_req_free(req);
 401 }
 402
 403 /* size[4] Tflush tag[2] oldtag[2] */
 404 static P9Req *v9fs_tflush(QVirtio9P *v9p, uint16_t oldtag, uint16_t tag)
 405 {
 406     P9Req *req;
 407
 408     req = v9fs_req_init(v9p,  2, P9_TFLUSH, tag);
 409     v9fs_uint32_write(req, oldtag);
 410     v9fs_req_send(req);
 411     return req;
 412 }
 413
 414 /* size[4] Rflush tag[2] */
 415 static void v9fs_rflush(P9Req *req)
 416 {
 417     v9fs_req_recv(req, P9_RFLUSH);
 418     v9fs_req_free(req);
 419 }
 420
 421 static void fs_version(void *obj, void *data, QGuestAllocator *t_alloc)
 422 {
 423     QVirtio9P *v9p = obj;
 424     alloc = t_alloc;
 425     const char *version = "9P2000.L";
 426     uint16_t server_len;
 427     char *server_version;
 428     P9Req *req;
 429
 430     req = v9fs_tversion(v9p, P9_MAX_SIZE, version, P9_NOTAG);
 431     v9fs_req_wait_for_reply(req, NULL);
 432     v9fs_rversion(req, &server_len, &server_version);
 433
 434     g_assert_cmpmem(server_version, server_len, version, strlen(version));
 435
 436     g_free(server_version);
 437 }
 438
 439 static void fs_attach(void *obj, void *data, QGuestAllocator *t_alloc)
 440 {
 441     QVirtio9P *v9p = obj;
 442     alloc = t_alloc;
 443     P9Req *req;
 444
 445     fs_version(v9p, NULL, t_alloc);
 446     req = v9fs_tattach(v9p, 0, getuid(), 0);
 447     v9fs_req_wait_for_reply(req, NULL);
 448     v9fs_rattach(req, NULL);
 449 }
 450
 451 static void fs_walk(void *obj, void *data, QGuestAllocator *t_alloc)
 452 {
 453     QVirtio9P *v9p = obj;
 454     alloc = t_alloc;
 455     char *wnames[P9_MAXWELEM];
 456     uint16_t nwqid;
 457     v9fs_qid *wqid;
 458     int i;
 459     P9Req *req;
 460
 461     for (i = 0; i < P9_MAXWELEM; i++) {
 462         wnames[i] = g_strdup_printf(QTEST_V9FS_SYNTH_WALK_FILE, i);
 463     }
 464
 465     fs_attach(v9p, NULL, t_alloc);
 466     req = v9fs_twalk(v9p, 0, 1, P9_MAXWELEM, wnames, 0);
 467     v9fs_req_wait_for_reply(req, NULL);
 468     v9fs_rwalk(req, &nwqid, &wqid);
 469
 470     g_assert_cmpint(nwqid, ==, P9_MAXWELEM);
 471
 472     for (i = 0; i < P9_MAXWELEM; i++) {
 473         g_free(wnames[i]);
 474     }
 475
 476     g_free(wqid);
 477 }
 478
 479 static void fs_walk_no_slash(void *obj, void *data, QGuestAllocator *t_alloc)
 480 {
 481     QVirtio9P *v9p = obj;
 482     alloc = t_alloc;
 483     char *const wnames[] = { g_strdup(" /") };
 484     P9Req *req;
 485     uint32_t err;
 486
 487     fs_attach(v9p, NULL, t_alloc);
 488     req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
 489     v9fs_req_wait_for_reply(req, NULL);
 490     v9fs_rlerror(req, &err);
 491
 492     g_assert_cmpint(err, ==, ENOENT);
 493
 494     g_free(wnames[0]);
 495 }
 496
 497 static void fs_walk_dotdot(void *obj, void *data, QGuestAllocator *t_alloc)
 498 {
 499     QVirtio9P *v9p = obj;
 500     alloc = t_alloc;
 501     char *const wnames[] = { g_strdup("..") };
 502     v9fs_qid root_qid, *wqid;
 503     P9Req *req;
 504
 505     fs_version(v9p, NULL, t_alloc);
 506     req = v9fs_tattach(v9p, 0, getuid(), 0);
 507     v9fs_req_wait_for_reply(req, NULL);
 508     v9fs_rattach(req, &root_qid);
 509
 510     req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
 511     v9fs_req_wait_for_reply(req, NULL);
 512     v9fs_rwalk(req, NULL, &wqid); /* We now we'll get one qid */
 513
 514     g_assert_cmpmem(&root_qid, 13, wqid[0], 13);
 515
 516     g_free(wqid);
 517     g_free(wnames[0]);
 518 }
 519
 520 static void fs_lopen(void *obj, void *data, QGuestAllocator *t_alloc)
 521 {
 522     QVirtio9P *v9p = obj;
 523     alloc = t_alloc;
 524     char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_LOPEN_FILE) };
 525     P9Req *req;
 526
 527     fs_attach(v9p, NULL, t_alloc);
 528     req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
 529     v9fs_req_wait_for_reply(req, NULL);
 530     v9fs_rwalk(req, NULL, NULL);
 531
 532     req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
 533     v9fs_req_wait_for_reply(req, NULL);
 534     v9fs_rlopen(req, NULL, NULL);
 535
 536     g_free(wnames[0]);
 537 }
 538
 539 static void fs_write(void *obj, void *data, QGuestAllocator *t_alloc)
 540 {
 541     QVirtio9P *v9p = obj;
 542     alloc = t_alloc;
 543     static const uint32_t write_count = P9_MAX_SIZE / 2;
 544     char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_WRITE_FILE) };
 545     char *buf = g_malloc0(write_count);
 546     uint32_t count;
 547     P9Req *req;
 548
 549     fs_attach(v9p, NULL, t_alloc);
 550     req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
 551     v9fs_req_wait_for_reply(req, NULL);
 552     v9fs_rwalk(req, NULL, NULL);
 553
 554     req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
 555     v9fs_req_wait_for_reply(req, NULL);
 556     v9fs_rlopen(req, NULL, NULL);
 557
 558     req = v9fs_twrite(v9p, 1, 0, write_count, buf, 0);
 559     v9fs_req_wait_for_reply(req, NULL);
 560     v9fs_rwrite(req, &count);
 561     g_assert_cmpint(count, ==, write_count);
 562
 563     g_free(buf);
 564     g_free(wnames[0]);
 565 }
 566
 567 static void fs_flush_success(void *obj, void *data, QGuestAllocator *t_alloc)
 568 {
 569     QVirtio9P *v9p = obj;
 570     alloc = t_alloc;
 571     char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_FLUSH_FILE) };
 572     P9Req *req, *flush_req;
 573     uint32_t reply_len;
 574     uint8_t should_block;
 575
 576     fs_attach(v9p, NULL, t_alloc);
 577     req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
 578     v9fs_req_wait_for_reply(req, NULL);
 579     v9fs_rwalk(req, NULL, NULL);
 580
 581     req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
 582     v9fs_req_wait_for_reply(req, NULL);
 583     v9fs_rlopen(req, NULL, NULL);
 584
 585     /* This will cause the 9p server to try to write data to the backend,
 586      * until the write request gets cancelled.
 587      */
 588     should_block = 1;
 589     req = v9fs_twrite(v9p, 1, 0, sizeof(should_block), &should_block, 0);
 590
 591     flush_req = v9fs_tflush(v9p, req->tag, 1);
 592
 593     /* The write request is supposed to be flushed: the server should just
 594      * mark the write request as used and reply to the flush request.
 595      */
 596     v9fs_req_wait_for_reply(req, &reply_len);
 597     g_assert_cmpint(reply_len, ==, 0);
 598     v9fs_req_free(req);
 599     v9fs_rflush(flush_req);
 600
 601     g_free(wnames[0]);
 602 }
 603
 604 static void fs_flush_ignored(void *obj, void *data, QGuestAllocator *t_alloc)
 605 {
 606     QVirtio9P *v9p = obj;
 607     alloc = t_alloc;
 608     char *const wnames[] = { g_strdup(QTEST_V9FS_SYNTH_FLUSH_FILE) };
 609     P9Req *req, *flush_req;
 610     uint32_t count;
 611     uint8_t should_block;
 612
 613     fs_attach(v9p, NULL, t_alloc);
 614     req = v9fs_twalk(v9p, 0, 1, 1, wnames, 0);
 615     v9fs_req_wait_for_reply(req, NULL);
 616     v9fs_rwalk(req, NULL, NULL);
 617
 618     req = v9fs_tlopen(v9p, 1, O_WRONLY, 0);
 619     v9fs_req_wait_for_reply(req, NULL);
 620     v9fs_rlopen(req, NULL, NULL);
 621
 622     /* This will cause the write request to complete right away, before it
 623      * could be actually cancelled.
 624      */
 625     should_block = 0;
 626     req = v9fs_twrite(v9p, 1, 0, sizeof(should_block), &should_block, 0);
 627
 628     flush_req = v9fs_tflush(v9p, req->tag, 1);
 629
 630     /* The write request is supposed to complete. The server should
 631      * reply to the write request and the flush request.
 632      */
 633     v9fs_req_wait_for_reply(req, NULL);
 634     v9fs_rwrite(req, &count);
 635     g_assert_cmpint(count, ==, sizeof(should_block));
 636     v9fs_rflush(flush_req);
 637
 638     g_free(wnames[0]);
 639 }
 640
 641 static void register_virtio_9p_test(void)
 642 {
 643     qos_add_test("config", "virtio-9p", pci_config, NULL);
 644     qos_add_test("fs/version/basic", "virtio-9p", fs_version, NULL);
 645     qos_add_test("fs/attach/basic", "virtio-9p", fs_attach, NULL);
 646     qos_add_test("fs/walk/basic", "virtio-9p", fs_walk, NULL);
 647     qos_add_test("fs/walk/no_slash", "virtio-9p", fs_walk_no_slash,
 648                  NULL);
 649     qos_add_test("fs/walk/dotdot_from_root", "virtio-9p",
 650                  fs_walk_dotdot, NULL);
 651     qos_add_test("fs/lopen/basic", "virtio-9p", fs_lopen, NULL);
 652     qos_add_test("fs/write/basic", "virtio-9p", fs_write, NULL);
 653     qos_add_test("fs/flush/success", "virtio-9p", fs_flush_success,
 654                  NULL);
 655     qos_add_test("fs/flush/ignored", "virtio-9p", fs_flush_ignored,
 656                  NULL);
 657 }
 658
 659 libqos_init(register_virtio_9p_test);