1 /* 2 * 9P network client for VirtIO 9P test cases (based on QTest) 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 /* 11 * Not so fast! You might want to read the 9p developer docs first: 12 * https://wiki.qemu.org/Documentation/9p 13 */ 14 15 #include "qemu/osdep.h" 16 #include "virtio-9p-client.h" 17 18 #define QVIRTIO_9P_TIMEOUT_US (10 * 1000 * 1000) 19 static QGuestAllocator *alloc; 20 21 void v9fs_set_allocator(QGuestAllocator *t_alloc) 22 { 23 alloc = t_alloc; 24 } 25 26 /* 27 * Used to auto generate new fids. Start with arbitrary high value to avoid 28 * collision with hard coded fids in basic test code. 29 */ 30 static uint32_t fid_generator = 1000; 31 32 static uint32_t genfid(void) 33 { 34 return fid_generator++; 35 } 36 37 /** 38 * Splits the @a in string by @a delim into individual (non empty) strings 39 * and outputs them to @a out. The output array @a out is NULL terminated. 40 * 41 * Output array @a out must be freed by calling split_free(). 42 * 43 * @returns number of individual elements in output array @a out (without the 44 * final NULL terminating element) 45 */ 46 static int split(const char *in, const char *delim, char ***out) 47 { 48 int n = 0, i = 0; 49 char *tmp, *p; 50 51 tmp = g_strdup(in); 52 for (p = strtok(tmp, delim); p != NULL; p = strtok(NULL, delim)) { 53 if (strlen(p) > 0) { 54 ++n; 55 } 56 } 57 g_free(tmp); 58 59 *out = g_new0(char *, n + 1); /* last element NULL delimiter */ 60 61 tmp = g_strdup(in); 62 for (p = strtok(tmp, delim); p != NULL; p = strtok(NULL, delim)) { 63 if (strlen(p) > 0) { 64 (*out)[i++] = g_strdup(p); 65 } 66 } 67 g_free(tmp); 68 69 return n; 70 } 71 72 static void split_free(char ***out) 73 { 74 int i; 75 if (!*out) { 76 return; 77 } 78 for (i = 0; (*out)[i]; ++i) { 79 g_free((*out)[i]); 80 } 81 g_free(*out); 82 *out = NULL; 83 } 84 85 void v9fs_memwrite(P9Req *req, const void *addr, size_t len) 86 { 87 qtest_memwrite(req->qts, req->t_msg + req->t_off, addr, len); 88 req->t_off += len; 89 } 90 91 void v9fs_memskip(P9Req *req, size_t len) 92 { 93 req->r_off += len; 94 } 95 96 void v9fs_memread(P9Req *req, void *addr, size_t len) 97 { 98 qtest_memread(req->qts, req->r_msg + req->r_off, addr, len); 99 req->r_off += len; 100 } 101 102 void v9fs_uint8_read(P9Req *req, uint8_t *val) 103 { 104 v9fs_memread(req, val, 1); 105 } 106 107 void v9fs_uint16_write(P9Req *req, uint16_t val) 108 { 109 uint16_t le_val = cpu_to_le16(val); 110 111 v9fs_memwrite(req, &le_val, 2); 112 } 113 114 void v9fs_uint16_read(P9Req *req, uint16_t *val) 115 { 116 v9fs_memread(req, val, 2); 117 le16_to_cpus(val); 118 } 119 120 void v9fs_uint32_write(P9Req *req, uint32_t val) 121 { 122 uint32_t le_val = cpu_to_le32(val); 123 124 v9fs_memwrite(req, &le_val, 4); 125 } 126 127 void v9fs_uint64_write(P9Req *req, uint64_t val) 128 { 129 uint64_t le_val = cpu_to_le64(val); 130 131 v9fs_memwrite(req, &le_val, 8); 132 } 133 134 void v9fs_uint32_read(P9Req *req, uint32_t *val) 135 { 136 v9fs_memread(req, val, 4); 137 le32_to_cpus(val); 138 } 139 140 void v9fs_uint64_read(P9Req *req, uint64_t *val) 141 { 142 v9fs_memread(req, val, 8); 143 le64_to_cpus(val); 144 } 145 146 /* len[2] string[len] */ 147 uint16_t v9fs_string_size(const char *string) 148 { 149 size_t len = strlen(string); 150 151 g_assert_cmpint(len, <=, UINT16_MAX - 2); 152 153 return 2 + len; 154 } 155 156 void v9fs_string_write(P9Req *req, const char *string) 157 { 158 int len = strlen(string); 159 160 g_assert_cmpint(len, <=, UINT16_MAX); 161 162 v9fs_uint16_write(req, (uint16_t) len); 163 v9fs_memwrite(req, string, len); 164 } 165 166 void v9fs_string_read(P9Req *req, uint16_t *len, char **string) 167 { 168 uint16_t local_len; 169 170 v9fs_uint16_read(req, &local_len); 171 if (len) { 172 *len = local_len; 173 } 174 if (string) { 175 *string = g_malloc(local_len + 1); 176 v9fs_memread(req, *string, local_len); 177 (*string)[local_len] = 0; 178 } else { 179 v9fs_memskip(req, local_len); 180 } 181 } 182 183 typedef struct { 184 uint32_t size; 185 uint8_t id; 186 uint16_t tag; 187 } QEMU_PACKED P9Hdr; 188 189 P9Req *v9fs_req_init(QVirtio9P *v9p, uint32_t size, uint8_t id, 190 uint16_t tag) 191 { 192 P9Req *req = g_new0(P9Req, 1); 193 uint32_t total_size = 7; /* 9P header has well-known size of 7 bytes */ 194 P9Hdr hdr = { 195 .id = id, 196 .tag = cpu_to_le16(tag) 197 }; 198 199 g_assert_cmpint(total_size, <=, UINT32_MAX - size); 200 total_size += size; 201 hdr.size = cpu_to_le32(total_size); 202 203 g_assert_cmpint(total_size, <=, P9_MAX_SIZE); 204 205 req->qts = global_qtest; 206 req->v9p = v9p; 207 req->t_size = total_size; 208 req->t_msg = guest_alloc(alloc, req->t_size); 209 v9fs_memwrite(req, &hdr, 7); 210 req->tag = tag; 211 return req; 212 } 213 214 void v9fs_req_send(P9Req *req) 215 { 216 QVirtio9P *v9p = req->v9p; 217 218 req->r_msg = guest_alloc(alloc, P9_MAX_SIZE); 219 req->free_head = qvirtqueue_add(req->qts, v9p->vq, req->t_msg, req->t_size, 220 false, true); 221 qvirtqueue_add(req->qts, v9p->vq, req->r_msg, P9_MAX_SIZE, true, false); 222 qvirtqueue_kick(req->qts, v9p->vdev, v9p->vq, req->free_head); 223 req->t_off = 0; 224 } 225 226 static const char *rmessage_name(uint8_t id) 227 { 228 return 229 id == P9_RLERROR ? "RLERROR" : 230 id == P9_RVERSION ? "RVERSION" : 231 id == P9_RATTACH ? "RATTACH" : 232 id == P9_RWALK ? "RWALK" : 233 id == P9_RLOPEN ? "RLOPEN" : 234 id == P9_RWRITE ? "RWRITE" : 235 id == P9_RMKDIR ? "RMKDIR" : 236 id == P9_RLCREATE ? "RLCREATE" : 237 id == P9_RSYMLINK ? "RSYMLINK" : 238 id == P9_RGETATTR ? "RGETATTR" : 239 id == P9_RLINK ? "RLINK" : 240 id == P9_RUNLINKAT ? "RUNLINKAT" : 241 id == P9_RFLUSH ? "RFLUSH" : 242 id == P9_RREADDIR ? "RREADDIR" : 243 "<unknown>"; 244 } 245 246 void v9fs_req_wait_for_reply(P9Req *req, uint32_t *len) 247 { 248 QVirtio9P *v9p = req->v9p; 249 250 qvirtio_wait_used_elem(req->qts, v9p->vdev, v9p->vq, req->free_head, len, 251 QVIRTIO_9P_TIMEOUT_US); 252 } 253 254 void v9fs_req_recv(P9Req *req, uint8_t id) 255 { 256 P9Hdr hdr; 257 258 v9fs_memread(req, &hdr, 7); 259 hdr.size = ldl_le_p(&hdr.size); 260 hdr.tag = lduw_le_p(&hdr.tag); 261 262 g_assert_cmpint(hdr.size, >=, 7); 263 g_assert_cmpint(hdr.size, <=, P9_MAX_SIZE); 264 g_assert_cmpint(hdr.tag, ==, req->tag); 265 266 if (hdr.id != id) { 267 g_printerr("Received response %d (%s) instead of %d (%s)\n", 268 hdr.id, rmessage_name(hdr.id), id, rmessage_name(id)); 269 270 if (hdr.id == P9_RLERROR) { 271 uint32_t err; 272 v9fs_uint32_read(req, &err); 273 g_printerr("Rlerror has errno %d (%s)\n", err, strerror(err)); 274 } 275 } 276 g_assert_cmpint(hdr.id, ==, id); 277 } 278 279 void v9fs_req_free(P9Req *req) 280 { 281 guest_free(alloc, req->t_msg); 282 guest_free(alloc, req->r_msg); 283 g_free(req); 284 } 285 286 /* size[4] Rlerror tag[2] ecode[4] */ 287 void v9fs_rlerror(P9Req *req, uint32_t *err) 288 { 289 v9fs_req_recv(req, P9_RLERROR); 290 v9fs_uint32_read(req, err); 291 v9fs_req_free(req); 292 } 293 294 /* size[4] Tversion tag[2] msize[4] version[s] */ 295 TVersionRes v9fs_tversion(TVersionOpt opt) 296 { 297 P9Req *req; 298 uint32_t err; 299 uint32_t body_size = 4; 300 uint16_t string_size; 301 uint16_t server_len; 302 g_autofree char *server_version = NULL; 303 304 g_assert(opt.client); 305 306 if (!opt.msize) { 307 opt.msize = P9_MAX_SIZE; 308 } 309 310 if (!opt.tag) { 311 opt.tag = P9_NOTAG; 312 } 313 314 if (!opt.version) { 315 opt.version = "9P2000.L"; 316 } 317 318 string_size = v9fs_string_size(opt.version); 319 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 320 body_size += string_size; 321 req = v9fs_req_init(opt.client, body_size, P9_TVERSION, opt.tag); 322 323 v9fs_uint32_write(req, opt.msize); 324 v9fs_string_write(req, opt.version); 325 v9fs_req_send(req); 326 327 if (!opt.requestOnly) { 328 v9fs_req_wait_for_reply(req, NULL); 329 if (opt.expectErr) { 330 v9fs_rlerror(req, &err); 331 g_assert_cmpint(err, ==, opt.expectErr); 332 } else { 333 v9fs_rversion(req, &server_len, &server_version); 334 g_assert_cmpmem(server_version, server_len, 335 opt.version, strlen(opt.version)); 336 } 337 req = NULL; /* request was freed */ 338 } 339 340 return (TVersionRes) { 341 .req = req, 342 }; 343 } 344 345 /* size[4] Rversion tag[2] msize[4] version[s] */ 346 void v9fs_rversion(P9Req *req, uint16_t *len, char **version) 347 { 348 uint32_t msize; 349 350 v9fs_req_recv(req, P9_RVERSION); 351 v9fs_uint32_read(req, &msize); 352 353 g_assert_cmpint(msize, ==, P9_MAX_SIZE); 354 355 if (len || version) { 356 v9fs_string_read(req, len, version); 357 } 358 359 v9fs_req_free(req); 360 } 361 362 /* size[4] Tattach tag[2] fid[4] afid[4] uname[s] aname[s] n_uname[4] */ 363 TAttachRes v9fs_tattach(TAttachOpt opt) 364 { 365 uint32_t err; 366 const char *uname = ""; /* ignored by QEMU */ 367 const char *aname = ""; /* ignored by QEMU */ 368 369 g_assert(opt.client); 370 /* expecting either Rattach or Rlerror, but obviously not both */ 371 g_assert(!opt.expectErr || !opt.rattach.qid); 372 373 if (!opt.requestOnly) { 374 v9fs_tversion((TVersionOpt) { .client = opt.client }); 375 } 376 377 if (!opt.n_uname) { 378 opt.n_uname = getuid(); 379 } 380 381 P9Req *req = v9fs_req_init(opt.client, 4 + 4 + 2 + 2 + 4, P9_TATTACH, 382 opt.tag); 383 384 v9fs_uint32_write(req, opt.fid); 385 v9fs_uint32_write(req, P9_NOFID); 386 v9fs_string_write(req, uname); 387 v9fs_string_write(req, aname); 388 v9fs_uint32_write(req, opt.n_uname); 389 v9fs_req_send(req); 390 391 if (!opt.requestOnly) { 392 v9fs_req_wait_for_reply(req, NULL); 393 if (opt.expectErr) { 394 v9fs_rlerror(req, &err); 395 g_assert_cmpint(err, ==, opt.expectErr); 396 } else { 397 v9fs_rattach(req, opt.rattach.qid); 398 } 399 req = NULL; /* request was freed */ 400 } 401 402 return (TAttachRes) { 403 .req = req, 404 }; 405 } 406 407 /* size[4] Rattach tag[2] qid[13] */ 408 void v9fs_rattach(P9Req *req, v9fs_qid *qid) 409 { 410 v9fs_req_recv(req, P9_RATTACH); 411 if (qid) { 412 v9fs_memread(req, qid, 13); 413 } 414 v9fs_req_free(req); 415 } 416 417 /* size[4] Twalk tag[2] fid[4] newfid[4] nwname[2] nwname*(wname[s]) */ 418 TWalkRes v9fs_twalk(TWalkOpt opt) 419 { 420 P9Req *req; 421 int i; 422 uint32_t body_size = 4 + 4 + 2; 423 uint32_t err; 424 char **wnames = NULL; 425 426 g_assert(opt.client); 427 /* expecting either high- or low-level path, both not both */ 428 g_assert(!opt.path || !(opt.nwname || opt.wnames)); 429 /* expecting either Rwalk or Rlerror, but obviously not both */ 430 g_assert(!opt.expectErr || !(opt.rwalk.nwqid || opt.rwalk.wqid)); 431 432 if (!opt.newfid) { 433 opt.newfid = genfid(); 434 } 435 436 if (opt.path) { 437 opt.nwname = split(opt.path, "/", &wnames); 438 opt.wnames = wnames; 439 } 440 441 for (i = 0; i < opt.nwname; i++) { 442 uint16_t wname_size = v9fs_string_size(opt.wnames[i]); 443 444 g_assert_cmpint(body_size, <=, UINT32_MAX - wname_size); 445 body_size += wname_size; 446 } 447 req = v9fs_req_init(opt.client, body_size, P9_TWALK, opt.tag); 448 v9fs_uint32_write(req, opt.fid); 449 v9fs_uint32_write(req, opt.newfid); 450 v9fs_uint16_write(req, opt.nwname); 451 for (i = 0; i < opt.nwname; i++) { 452 v9fs_string_write(req, opt.wnames[i]); 453 } 454 v9fs_req_send(req); 455 456 if (!opt.requestOnly) { 457 v9fs_req_wait_for_reply(req, NULL); 458 if (opt.expectErr) { 459 v9fs_rlerror(req, &err); 460 g_assert_cmpint(err, ==, opt.expectErr); 461 } else { 462 v9fs_rwalk(req, opt.rwalk.nwqid, opt.rwalk.wqid); 463 } 464 req = NULL; /* request was freed */ 465 } 466 467 split_free(&wnames); 468 469 return (TWalkRes) { 470 .newfid = opt.newfid, 471 .req = req, 472 }; 473 } 474 475 /* size[4] Rwalk tag[2] nwqid[2] nwqid*(wqid[13]) */ 476 void v9fs_rwalk(P9Req *req, uint16_t *nwqid, v9fs_qid **wqid) 477 { 478 uint16_t local_nwqid; 479 480 v9fs_req_recv(req, P9_RWALK); 481 v9fs_uint16_read(req, &local_nwqid); 482 if (nwqid) { 483 *nwqid = local_nwqid; 484 } 485 if (wqid) { 486 *wqid = g_malloc(local_nwqid * 13); 487 v9fs_memread(req, *wqid, local_nwqid * 13); 488 } 489 v9fs_req_free(req); 490 } 491 492 /* size[4] Tgetattr tag[2] fid[4] request_mask[8] */ 493 TGetAttrRes v9fs_tgetattr(TGetAttrOpt opt) 494 { 495 P9Req *req; 496 uint32_t err; 497 498 g_assert(opt.client); 499 /* expecting either Rgetattr or Rlerror, but obviously not both */ 500 g_assert(!opt.expectErr || !opt.rgetattr.attr); 501 502 if (!opt.request_mask) { 503 opt.request_mask = P9_GETATTR_ALL; 504 } 505 506 req = v9fs_req_init(opt.client, 4 + 8, P9_TGETATTR, opt.tag); 507 v9fs_uint32_write(req, opt.fid); 508 v9fs_uint64_write(req, opt.request_mask); 509 v9fs_req_send(req); 510 511 if (!opt.requestOnly) { 512 v9fs_req_wait_for_reply(req, NULL); 513 if (opt.expectErr) { 514 v9fs_rlerror(req, &err); 515 g_assert_cmpint(err, ==, opt.expectErr); 516 } else { 517 v9fs_rgetattr(req, opt.rgetattr.attr); 518 } 519 req = NULL; /* request was freed */ 520 } 521 522 return (TGetAttrRes) { .req = req }; 523 } 524 525 /* 526 * size[4] Rgetattr tag[2] valid[8] qid[13] mode[4] uid[4] gid[4] nlink[8] 527 * rdev[8] size[8] blksize[8] blocks[8] 528 * atime_sec[8] atime_nsec[8] mtime_sec[8] mtime_nsec[8] 529 * ctime_sec[8] ctime_nsec[8] btime_sec[8] btime_nsec[8] 530 * gen[8] data_version[8] 531 */ 532 void v9fs_rgetattr(P9Req *req, v9fs_attr *attr) 533 { 534 v9fs_req_recv(req, P9_RGETATTR); 535 536 v9fs_uint64_read(req, &attr->valid); 537 v9fs_memread(req, &attr->qid, 13); 538 v9fs_uint32_read(req, &attr->mode); 539 v9fs_uint32_read(req, &attr->uid); 540 v9fs_uint32_read(req, &attr->gid); 541 v9fs_uint64_read(req, &attr->nlink); 542 v9fs_uint64_read(req, &attr->rdev); 543 v9fs_uint64_read(req, &attr->size); 544 v9fs_uint64_read(req, &attr->blksize); 545 v9fs_uint64_read(req, &attr->blocks); 546 v9fs_uint64_read(req, &attr->atime_sec); 547 v9fs_uint64_read(req, &attr->atime_nsec); 548 v9fs_uint64_read(req, &attr->mtime_sec); 549 v9fs_uint64_read(req, &attr->mtime_nsec); 550 v9fs_uint64_read(req, &attr->ctime_sec); 551 v9fs_uint64_read(req, &attr->ctime_nsec); 552 v9fs_uint64_read(req, &attr->btime_sec); 553 v9fs_uint64_read(req, &attr->btime_nsec); 554 v9fs_uint64_read(req, &attr->gen); 555 v9fs_uint64_read(req, &attr->data_version); 556 557 v9fs_req_free(req); 558 } 559 560 /* size[4] Treaddir tag[2] fid[4] offset[8] count[4] */ 561 TReadDirRes v9fs_treaddir(TReadDirOpt opt) 562 { 563 P9Req *req; 564 uint32_t err; 565 566 g_assert(opt.client); 567 /* expecting either Rreaddir or Rlerror, but obviously not both */ 568 g_assert(!opt.expectErr || !(opt.rreaddir.count || 569 opt.rreaddir.nentries || opt.rreaddir.entries)); 570 571 req = v9fs_req_init(opt.client, 4 + 8 + 4, P9_TREADDIR, opt.tag); 572 v9fs_uint32_write(req, opt.fid); 573 v9fs_uint64_write(req, opt.offset); 574 v9fs_uint32_write(req, opt.count); 575 v9fs_req_send(req); 576 577 if (!opt.requestOnly) { 578 v9fs_req_wait_for_reply(req, NULL); 579 if (opt.expectErr) { 580 v9fs_rlerror(req, &err); 581 g_assert_cmpint(err, ==, opt.expectErr); 582 } else { 583 v9fs_rreaddir(req, opt.rreaddir.count, opt.rreaddir.nentries, 584 opt.rreaddir.entries); 585 } 586 req = NULL; /* request was freed */ 587 } 588 589 return (TReadDirRes) { .req = req }; 590 } 591 592 /* size[4] Rreaddir tag[2] count[4] data[count] */ 593 void v9fs_rreaddir(P9Req *req, uint32_t *count, uint32_t *nentries, 594 struct V9fsDirent **entries) 595 { 596 uint32_t local_count; 597 struct V9fsDirent *e = NULL; 598 /* only used to avoid a leak if entries was NULL */ 599 struct V9fsDirent *unused_entries = NULL; 600 uint16_t slen; 601 uint32_t n = 0; 602 603 v9fs_req_recv(req, P9_RREADDIR); 604 v9fs_uint32_read(req, &local_count); 605 606 if (count) { 607 *count = local_count; 608 } 609 610 for (int32_t togo = (int32_t)local_count; 611 togo >= 13 + 8 + 1 + 2; 612 togo -= 13 + 8 + 1 + 2 + slen, ++n) 613 { 614 if (!e) { 615 e = g_new(struct V9fsDirent, 1); 616 if (entries) { 617 *entries = e; 618 } else { 619 unused_entries = e; 620 } 621 } else { 622 e = e->next = g_new(struct V9fsDirent, 1); 623 } 624 e->next = NULL; 625 /* qid[13] offset[8] type[1] name[s] */ 626 v9fs_memread(req, &e->qid, 13); 627 v9fs_uint64_read(req, &e->offset); 628 v9fs_uint8_read(req, &e->type); 629 v9fs_string_read(req, &slen, &e->name); 630 } 631 632 if (nentries) { 633 *nentries = n; 634 } 635 636 v9fs_free_dirents(unused_entries); 637 v9fs_req_free(req); 638 } 639 640 void v9fs_free_dirents(struct V9fsDirent *e) 641 { 642 struct V9fsDirent *next = NULL; 643 644 for (; e; e = next) { 645 next = e->next; 646 g_free(e->name); 647 g_free(e); 648 } 649 } 650 651 /* size[4] Tlopen tag[2] fid[4] flags[4] */ 652 TLOpenRes v9fs_tlopen(TLOpenOpt opt) 653 { 654 P9Req *req; 655 uint32_t err; 656 657 g_assert(opt.client); 658 /* expecting either Rlopen or Rlerror, but obviously not both */ 659 g_assert(!opt.expectErr || !(opt.rlopen.qid || opt.rlopen.iounit)); 660 661 req = v9fs_req_init(opt.client, 4 + 4, P9_TLOPEN, opt.tag); 662 v9fs_uint32_write(req, opt.fid); 663 v9fs_uint32_write(req, opt.flags); 664 v9fs_req_send(req); 665 666 if (!opt.requestOnly) { 667 v9fs_req_wait_for_reply(req, NULL); 668 if (opt.expectErr) { 669 v9fs_rlerror(req, &err); 670 g_assert_cmpint(err, ==, opt.expectErr); 671 } else { 672 v9fs_rlopen(req, opt.rlopen.qid, opt.rlopen.iounit); 673 } 674 req = NULL; /* request was freed */ 675 } 676 677 return (TLOpenRes) { .req = req }; 678 } 679 680 /* size[4] Rlopen tag[2] qid[13] iounit[4] */ 681 void v9fs_rlopen(P9Req *req, v9fs_qid *qid, uint32_t *iounit) 682 { 683 v9fs_req_recv(req, P9_RLOPEN); 684 if (qid) { 685 v9fs_memread(req, qid, 13); 686 } else { 687 v9fs_memskip(req, 13); 688 } 689 if (iounit) { 690 v9fs_uint32_read(req, iounit); 691 } 692 v9fs_req_free(req); 693 } 694 695 /* size[4] Twrite tag[2] fid[4] offset[8] count[4] data[count] */ 696 TWriteRes v9fs_twrite(TWriteOpt opt) 697 { 698 P9Req *req; 699 uint32_t err; 700 uint32_t body_size = 4 + 8 + 4; 701 uint32_t written = 0; 702 703 g_assert(opt.client); 704 705 g_assert_cmpint(body_size, <=, UINT32_MAX - opt.count); 706 body_size += opt.count; 707 req = v9fs_req_init(opt.client, body_size, P9_TWRITE, opt.tag); 708 v9fs_uint32_write(req, opt.fid); 709 v9fs_uint64_write(req, opt.offset); 710 v9fs_uint32_write(req, opt.count); 711 v9fs_memwrite(req, opt.data, opt.count); 712 v9fs_req_send(req); 713 714 if (!opt.requestOnly) { 715 v9fs_req_wait_for_reply(req, NULL); 716 if (opt.expectErr) { 717 v9fs_rlerror(req, &err); 718 g_assert_cmpint(err, ==, opt.expectErr); 719 } else { 720 v9fs_rwrite(req, &written); 721 } 722 req = NULL; /* request was freed */ 723 } 724 725 return (TWriteRes) { 726 .req = req, 727 .count = written 728 }; 729 } 730 731 /* size[4] Rwrite tag[2] count[4] */ 732 void v9fs_rwrite(P9Req *req, uint32_t *count) 733 { 734 v9fs_req_recv(req, P9_RWRITE); 735 if (count) { 736 v9fs_uint32_read(req, count); 737 } 738 v9fs_req_free(req); 739 } 740 741 /* size[4] Tflush tag[2] oldtag[2] */ 742 TFlushRes v9fs_tflush(TFlushOpt opt) 743 { 744 P9Req *req; 745 uint32_t err; 746 747 g_assert(opt.client); 748 749 req = v9fs_req_init(opt.client, 2, P9_TFLUSH, opt.tag); 750 v9fs_uint32_write(req, opt.oldtag); 751 v9fs_req_send(req); 752 753 if (!opt.requestOnly) { 754 v9fs_req_wait_for_reply(req, NULL); 755 if (opt.expectErr) { 756 v9fs_rlerror(req, &err); 757 g_assert_cmpint(err, ==, opt.expectErr); 758 } else { 759 v9fs_rflush(req); 760 } 761 req = NULL; /* request was freed */ 762 } 763 764 return (TFlushRes) { .req = req }; 765 } 766 767 /* size[4] Rflush tag[2] */ 768 void v9fs_rflush(P9Req *req) 769 { 770 v9fs_req_recv(req, P9_RFLUSH); 771 v9fs_req_free(req); 772 } 773 774 /* size[4] Tmkdir tag[2] dfid[4] name[s] mode[4] gid[4] */ 775 TMkdirRes v9fs_tmkdir(TMkdirOpt opt) 776 { 777 P9Req *req; 778 uint32_t err; 779 780 g_assert(opt.client); 781 /* expecting either hi-level atPath or low-level dfid, but not both */ 782 g_assert(!opt.atPath || !opt.dfid); 783 /* expecting either Rmkdir or Rlerror, but obviously not both */ 784 g_assert(!opt.expectErr || !opt.rmkdir.qid); 785 786 if (opt.atPath) { 787 opt.dfid = v9fs_twalk((TWalkOpt) { .client = opt.client, 788 .path = opt.atPath }).newfid; 789 } 790 791 if (!opt.mode) { 792 opt.mode = 0750; 793 } 794 795 uint32_t body_size = 4 + 4 + 4; 796 uint16_t string_size = v9fs_string_size(opt.name); 797 798 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 799 body_size += string_size; 800 801 req = v9fs_req_init(opt.client, body_size, P9_TMKDIR, opt.tag); 802 v9fs_uint32_write(req, opt.dfid); 803 v9fs_string_write(req, opt.name); 804 v9fs_uint32_write(req, opt.mode); 805 v9fs_uint32_write(req, opt.gid); 806 v9fs_req_send(req); 807 808 if (!opt.requestOnly) { 809 v9fs_req_wait_for_reply(req, NULL); 810 if (opt.expectErr) { 811 v9fs_rlerror(req, &err); 812 g_assert_cmpint(err, ==, opt.expectErr); 813 } else { 814 v9fs_rmkdir(req, opt.rmkdir.qid); 815 } 816 req = NULL; /* request was freed */ 817 } 818 819 return (TMkdirRes) { .req = req }; 820 } 821 822 /* size[4] Rmkdir tag[2] qid[13] */ 823 void v9fs_rmkdir(P9Req *req, v9fs_qid *qid) 824 { 825 v9fs_req_recv(req, P9_RMKDIR); 826 if (qid) { 827 v9fs_memread(req, qid, 13); 828 } else { 829 v9fs_memskip(req, 13); 830 } 831 v9fs_req_free(req); 832 } 833 834 /* size[4] Tlcreate tag[2] fid[4] name[s] flags[4] mode[4] gid[4] */ 835 TlcreateRes v9fs_tlcreate(TlcreateOpt opt) 836 { 837 P9Req *req; 838 uint32_t err; 839 840 g_assert(opt.client); 841 /* expecting either hi-level atPath or low-level fid, but not both */ 842 g_assert(!opt.atPath || !opt.fid); 843 /* expecting either Rlcreate or Rlerror, but obviously not both */ 844 g_assert(!opt.expectErr || !(opt.rlcreate.qid || opt.rlcreate.iounit)); 845 846 if (opt.atPath) { 847 opt.fid = v9fs_twalk((TWalkOpt) { .client = opt.client, 848 .path = opt.atPath }).newfid; 849 } 850 851 if (!opt.mode) { 852 opt.mode = 0750; 853 } 854 855 uint32_t body_size = 4 + 4 + 4 + 4; 856 uint16_t string_size = v9fs_string_size(opt.name); 857 858 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 859 body_size += string_size; 860 861 req = v9fs_req_init(opt.client, body_size, P9_TLCREATE, opt.tag); 862 v9fs_uint32_write(req, opt.fid); 863 v9fs_string_write(req, opt.name); 864 v9fs_uint32_write(req, opt.flags); 865 v9fs_uint32_write(req, opt.mode); 866 v9fs_uint32_write(req, opt.gid); 867 v9fs_req_send(req); 868 869 if (!opt.requestOnly) { 870 v9fs_req_wait_for_reply(req, NULL); 871 if (opt.expectErr) { 872 v9fs_rlerror(req, &err); 873 g_assert_cmpint(err, ==, opt.expectErr); 874 } else { 875 v9fs_rlcreate(req, opt.rlcreate.qid, opt.rlcreate.iounit); 876 } 877 req = NULL; /* request was freed */ 878 } 879 880 return (TlcreateRes) { .req = req }; 881 } 882 883 /* size[4] Rlcreate tag[2] qid[13] iounit[4] */ 884 void v9fs_rlcreate(P9Req *req, v9fs_qid *qid, uint32_t *iounit) 885 { 886 v9fs_req_recv(req, P9_RLCREATE); 887 if (qid) { 888 v9fs_memread(req, qid, 13); 889 } else { 890 v9fs_memskip(req, 13); 891 } 892 if (iounit) { 893 v9fs_uint32_read(req, iounit); 894 } 895 v9fs_req_free(req); 896 } 897 898 /* size[4] Tsymlink tag[2] fid[4] name[s] symtgt[s] gid[4] */ 899 TsymlinkRes v9fs_tsymlink(TsymlinkOpt opt) 900 { 901 P9Req *req; 902 uint32_t err; 903 904 g_assert(opt.client); 905 /* expecting either hi-level atPath or low-level fid, but not both */ 906 g_assert(!opt.atPath || !opt.fid); 907 /* expecting either Rsymlink or Rlerror, but obviously not both */ 908 g_assert(!opt.expectErr || !opt.rsymlink.qid); 909 910 if (opt.atPath) { 911 opt.fid = v9fs_twalk((TWalkOpt) { .client = opt.client, 912 .path = opt.atPath }).newfid; 913 } 914 915 uint32_t body_size = 4 + 4; 916 uint16_t string_size = v9fs_string_size(opt.name) + 917 v9fs_string_size(opt.symtgt); 918 919 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 920 body_size += string_size; 921 922 req = v9fs_req_init(opt.client, body_size, P9_TSYMLINK, opt.tag); 923 v9fs_uint32_write(req, opt.fid); 924 v9fs_string_write(req, opt.name); 925 v9fs_string_write(req, opt.symtgt); 926 v9fs_uint32_write(req, opt.gid); 927 v9fs_req_send(req); 928 929 if (!opt.requestOnly) { 930 v9fs_req_wait_for_reply(req, NULL); 931 if (opt.expectErr) { 932 v9fs_rlerror(req, &err); 933 g_assert_cmpint(err, ==, opt.expectErr); 934 } else { 935 v9fs_rsymlink(req, opt.rsymlink.qid); 936 } 937 req = NULL; /* request was freed */ 938 } 939 940 return (TsymlinkRes) { .req = req }; 941 } 942 943 /* size[4] Rsymlink tag[2] qid[13] */ 944 void v9fs_rsymlink(P9Req *req, v9fs_qid *qid) 945 { 946 v9fs_req_recv(req, P9_RSYMLINK); 947 if (qid) { 948 v9fs_memread(req, qid, 13); 949 } else { 950 v9fs_memskip(req, 13); 951 } 952 v9fs_req_free(req); 953 } 954 955 /* size[4] Tlink tag[2] dfid[4] fid[4] name[s] */ 956 TlinkRes v9fs_tlink(TlinkOpt opt) 957 { 958 P9Req *req; 959 uint32_t err; 960 961 g_assert(opt.client); 962 /* expecting either hi-level atPath or low-level dfid, but not both */ 963 g_assert(!opt.atPath || !opt.dfid); 964 /* expecting either hi-level toPath or low-level fid, but not both */ 965 g_assert(!opt.toPath || !opt.fid); 966 967 if (opt.atPath) { 968 opt.dfid = v9fs_twalk((TWalkOpt) { .client = opt.client, 969 .path = opt.atPath }).newfid; 970 } 971 if (opt.toPath) { 972 opt.fid = v9fs_twalk((TWalkOpt) { .client = opt.client, 973 .path = opt.toPath }).newfid; 974 } 975 976 uint32_t body_size = 4 + 4; 977 uint16_t string_size = v9fs_string_size(opt.name); 978 979 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 980 body_size += string_size; 981 982 req = v9fs_req_init(opt.client, body_size, P9_TLINK, opt.tag); 983 v9fs_uint32_write(req, opt.dfid); 984 v9fs_uint32_write(req, opt.fid); 985 v9fs_string_write(req, opt.name); 986 v9fs_req_send(req); 987 988 if (!opt.requestOnly) { 989 v9fs_req_wait_for_reply(req, NULL); 990 if (opt.expectErr) { 991 v9fs_rlerror(req, &err); 992 g_assert_cmpint(err, ==, opt.expectErr); 993 } else { 994 v9fs_rlink(req); 995 } 996 req = NULL; /* request was freed */ 997 } 998 999 return (TlinkRes) { .req = req }; 1000 } 1001 1002 /* size[4] Rlink tag[2] */ 1003 void v9fs_rlink(P9Req *req) 1004 { 1005 v9fs_req_recv(req, P9_RLINK); 1006 v9fs_req_free(req); 1007 } 1008 1009 /* size[4] Tunlinkat tag[2] dirfd[4] name[s] flags[4] */ 1010 TunlinkatRes v9fs_tunlinkat(TunlinkatOpt opt) 1011 { 1012 P9Req *req; 1013 uint32_t err; 1014 1015 g_assert(opt.client); 1016 /* expecting either hi-level atPath or low-level dirfd, but not both */ 1017 g_assert(!opt.atPath || !opt.dirfd); 1018 1019 if (opt.atPath) { 1020 opt.dirfd = v9fs_twalk((TWalkOpt) { .client = opt.client, 1021 .path = opt.atPath }).newfid; 1022 } 1023 1024 uint32_t body_size = 4 + 4; 1025 uint16_t string_size = v9fs_string_size(opt.name); 1026 1027 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 1028 body_size += string_size; 1029 1030 req = v9fs_req_init(opt.client, body_size, P9_TUNLINKAT, opt.tag); 1031 v9fs_uint32_write(req, opt.dirfd); 1032 v9fs_string_write(req, opt.name); 1033 v9fs_uint32_write(req, opt.flags); 1034 v9fs_req_send(req); 1035 1036 if (!opt.requestOnly) { 1037 v9fs_req_wait_for_reply(req, NULL); 1038 if (opt.expectErr) { 1039 v9fs_rlerror(req, &err); 1040 g_assert_cmpint(err, ==, opt.expectErr); 1041 } else { 1042 v9fs_runlinkat(req); 1043 } 1044 req = NULL; /* request was freed */ 1045 } 1046 1047 return (TunlinkatRes) { .req = req }; 1048 } 1049 1050 /* size[4] Runlinkat tag[2] */ 1051 void v9fs_runlinkat(P9Req *req) 1052 { 1053 v9fs_req_recv(req, P9_RUNLINKAT); 1054 v9fs_req_free(req); 1055 } 1056