virtio-9p-client.c (27529B)
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_RLINK ? "RLINK" : 239 id == P9_RUNLINKAT ? "RUNLINKAT" : 240 id == P9_RFLUSH ? "RFLUSH" : 241 id == P9_RREADDIR ? "READDIR" : 242 "<unknown>"; 243 } 244 245 void v9fs_req_wait_for_reply(P9Req *req, uint32_t *len) 246 { 247 QVirtio9P *v9p = req->v9p; 248 249 qvirtio_wait_used_elem(req->qts, v9p->vdev, v9p->vq, req->free_head, len, 250 QVIRTIO_9P_TIMEOUT_US); 251 } 252 253 void v9fs_req_recv(P9Req *req, uint8_t id) 254 { 255 P9Hdr hdr; 256 257 v9fs_memread(req, &hdr, 7); 258 hdr.size = ldl_le_p(&hdr.size); 259 hdr.tag = lduw_le_p(&hdr.tag); 260 261 g_assert_cmpint(hdr.size, >=, 7); 262 g_assert_cmpint(hdr.size, <=, P9_MAX_SIZE); 263 g_assert_cmpint(hdr.tag, ==, req->tag); 264 265 if (hdr.id != id) { 266 g_printerr("Received response %d (%s) instead of %d (%s)\n", 267 hdr.id, rmessage_name(hdr.id), id, rmessage_name(id)); 268 269 if (hdr.id == P9_RLERROR) { 270 uint32_t err; 271 v9fs_uint32_read(req, &err); 272 g_printerr("Rlerror has errno %d (%s)\n", err, strerror(err)); 273 } 274 } 275 g_assert_cmpint(hdr.id, ==, id); 276 } 277 278 void v9fs_req_free(P9Req *req) 279 { 280 guest_free(alloc, req->t_msg); 281 guest_free(alloc, req->r_msg); 282 g_free(req); 283 } 284 285 /* size[4] Rlerror tag[2] ecode[4] */ 286 void v9fs_rlerror(P9Req *req, uint32_t *err) 287 { 288 v9fs_req_recv(req, P9_RLERROR); 289 v9fs_uint32_read(req, err); 290 v9fs_req_free(req); 291 } 292 293 /* size[4] Tversion tag[2] msize[4] version[s] */ 294 TVersionRes v9fs_tversion(TVersionOpt opt) 295 { 296 P9Req *req; 297 uint32_t err; 298 uint32_t body_size = 4; 299 uint16_t string_size; 300 uint16_t server_len; 301 g_autofree char *server_version = NULL; 302 303 g_assert(opt.client); 304 305 if (!opt.msize) { 306 opt.msize = P9_MAX_SIZE; 307 } 308 309 if (!opt.tag) { 310 opt.tag = P9_NOTAG; 311 } 312 313 if (!opt.version) { 314 opt.version = "9P2000.L"; 315 } 316 317 string_size = v9fs_string_size(opt.version); 318 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 319 body_size += string_size; 320 req = v9fs_req_init(opt.client, body_size, P9_TVERSION, opt.tag); 321 322 v9fs_uint32_write(req, opt.msize); 323 v9fs_string_write(req, opt.version); 324 v9fs_req_send(req); 325 326 if (!opt.requestOnly) { 327 v9fs_req_wait_for_reply(req, NULL); 328 if (opt.expectErr) { 329 v9fs_rlerror(req, &err); 330 g_assert_cmpint(err, ==, opt.expectErr); 331 } else { 332 v9fs_rversion(req, &server_len, &server_version); 333 g_assert_cmpmem(server_version, server_len, 334 opt.version, strlen(opt.version)); 335 } 336 req = NULL; /* request was freed */ 337 } 338 339 return (TVersionRes) { 340 .req = req, 341 }; 342 } 343 344 /* size[4] Rversion tag[2] msize[4] version[s] */ 345 void v9fs_rversion(P9Req *req, uint16_t *len, char **version) 346 { 347 uint32_t msize; 348 349 v9fs_req_recv(req, P9_RVERSION); 350 v9fs_uint32_read(req, &msize); 351 352 g_assert_cmpint(msize, ==, P9_MAX_SIZE); 353 354 if (len || version) { 355 v9fs_string_read(req, len, version); 356 } 357 358 v9fs_req_free(req); 359 } 360 361 /* size[4] Tattach tag[2] fid[4] afid[4] uname[s] aname[s] n_uname[4] */ 362 TAttachRes v9fs_tattach(TAttachOpt opt) 363 { 364 uint32_t err; 365 const char *uname = ""; /* ignored by QEMU */ 366 const char *aname = ""; /* ignored by QEMU */ 367 368 g_assert(opt.client); 369 /* expecting either Rattach or Rlerror, but obviously not both */ 370 g_assert(!opt.expectErr || !opt.rattach.qid); 371 372 if (!opt.requestOnly) { 373 v9fs_tversion((TVersionOpt) { .client = opt.client }); 374 } 375 376 if (!opt.n_uname) { 377 opt.n_uname = getuid(); 378 } 379 380 P9Req *req = v9fs_req_init(opt.client, 4 + 4 + 2 + 2 + 4, P9_TATTACH, 381 opt.tag); 382 383 v9fs_uint32_write(req, opt.fid); 384 v9fs_uint32_write(req, P9_NOFID); 385 v9fs_string_write(req, uname); 386 v9fs_string_write(req, aname); 387 v9fs_uint32_write(req, opt.n_uname); 388 v9fs_req_send(req); 389 390 if (!opt.requestOnly) { 391 v9fs_req_wait_for_reply(req, NULL); 392 if (opt.expectErr) { 393 v9fs_rlerror(req, &err); 394 g_assert_cmpint(err, ==, opt.expectErr); 395 } else { 396 v9fs_rattach(req, opt.rattach.qid); 397 } 398 req = NULL; /* request was freed */ 399 } 400 401 return (TAttachRes) { 402 .req = req, 403 }; 404 } 405 406 /* size[4] Rattach tag[2] qid[13] */ 407 void v9fs_rattach(P9Req *req, v9fs_qid *qid) 408 { 409 v9fs_req_recv(req, P9_RATTACH); 410 if (qid) { 411 v9fs_memread(req, qid, 13); 412 } 413 v9fs_req_free(req); 414 } 415 416 /* size[4] Twalk tag[2] fid[4] newfid[4] nwname[2] nwname*(wname[s]) */ 417 TWalkRes v9fs_twalk(TWalkOpt opt) 418 { 419 P9Req *req; 420 int i; 421 uint32_t body_size = 4 + 4 + 2; 422 uint32_t err; 423 char **wnames = NULL; 424 425 g_assert(opt.client); 426 /* expecting either high- or low-level path, both not both */ 427 g_assert(!opt.path || !(opt.nwname || opt.wnames)); 428 /* expecting either Rwalk or Rlerror, but obviously not both */ 429 g_assert(!opt.expectErr || !(opt.rwalk.nwqid || opt.rwalk.wqid)); 430 431 if (!opt.newfid) { 432 opt.newfid = genfid(); 433 } 434 435 if (opt.path) { 436 opt.nwname = split(opt.path, "/", &wnames); 437 opt.wnames = wnames; 438 } 439 440 for (i = 0; i < opt.nwname; i++) { 441 uint16_t wname_size = v9fs_string_size(opt.wnames[i]); 442 443 g_assert_cmpint(body_size, <=, UINT32_MAX - wname_size); 444 body_size += wname_size; 445 } 446 req = v9fs_req_init(opt.client, body_size, P9_TWALK, opt.tag); 447 v9fs_uint32_write(req, opt.fid); 448 v9fs_uint32_write(req, opt.newfid); 449 v9fs_uint16_write(req, opt.nwname); 450 for (i = 0; i < opt.nwname; i++) { 451 v9fs_string_write(req, opt.wnames[i]); 452 } 453 v9fs_req_send(req); 454 455 if (!opt.requestOnly) { 456 v9fs_req_wait_for_reply(req, NULL); 457 if (opt.expectErr) { 458 v9fs_rlerror(req, &err); 459 g_assert_cmpint(err, ==, opt.expectErr); 460 } else { 461 v9fs_rwalk(req, opt.rwalk.nwqid, opt.rwalk.wqid); 462 } 463 req = NULL; /* request was freed */ 464 } 465 466 split_free(&wnames); 467 468 return (TWalkRes) { 469 .newfid = opt.newfid, 470 .req = req, 471 }; 472 } 473 474 /* size[4] Rwalk tag[2] nwqid[2] nwqid*(wqid[13]) */ 475 void v9fs_rwalk(P9Req *req, uint16_t *nwqid, v9fs_qid **wqid) 476 { 477 uint16_t local_nwqid; 478 479 v9fs_req_recv(req, P9_RWALK); 480 v9fs_uint16_read(req, &local_nwqid); 481 if (nwqid) { 482 *nwqid = local_nwqid; 483 } 484 if (wqid) { 485 *wqid = g_malloc(local_nwqid * 13); 486 v9fs_memread(req, *wqid, local_nwqid * 13); 487 } 488 v9fs_req_free(req); 489 } 490 491 /* size[4] Tgetattr tag[2] fid[4] request_mask[8] */ 492 TGetAttrRes v9fs_tgetattr(TGetAttrOpt opt) 493 { 494 P9Req *req; 495 uint32_t err; 496 497 g_assert(opt.client); 498 /* expecting either Rgetattr or Rlerror, but obviously not both */ 499 g_assert(!opt.expectErr || !opt.rgetattr.attr); 500 501 if (!opt.request_mask) { 502 opt.request_mask = P9_GETATTR_ALL; 503 } 504 505 req = v9fs_req_init(opt.client, 4 + 8, P9_TGETATTR, opt.tag); 506 v9fs_uint32_write(req, opt.fid); 507 v9fs_uint64_write(req, opt.request_mask); 508 v9fs_req_send(req); 509 510 if (!opt.requestOnly) { 511 v9fs_req_wait_for_reply(req, NULL); 512 if (opt.expectErr) { 513 v9fs_rlerror(req, &err); 514 g_assert_cmpint(err, ==, opt.expectErr); 515 } else { 516 v9fs_rgetattr(req, opt.rgetattr.attr); 517 } 518 req = NULL; /* request was freed */ 519 } 520 521 return (TGetAttrRes) { .req = req }; 522 } 523 524 /* 525 * size[4] Rgetattr tag[2] valid[8] qid[13] mode[4] uid[4] gid[4] nlink[8] 526 * rdev[8] size[8] blksize[8] blocks[8] 527 * atime_sec[8] atime_nsec[8] mtime_sec[8] mtime_nsec[8] 528 * ctime_sec[8] ctime_nsec[8] btime_sec[8] btime_nsec[8] 529 * gen[8] data_version[8] 530 */ 531 void v9fs_rgetattr(P9Req *req, v9fs_attr *attr) 532 { 533 v9fs_req_recv(req, P9_RGETATTR); 534 535 v9fs_uint64_read(req, &attr->valid); 536 v9fs_memread(req, &attr->qid, 13); 537 v9fs_uint32_read(req, &attr->mode); 538 v9fs_uint32_read(req, &attr->uid); 539 v9fs_uint32_read(req, &attr->gid); 540 v9fs_uint64_read(req, &attr->nlink); 541 v9fs_uint64_read(req, &attr->rdev); 542 v9fs_uint64_read(req, &attr->size); 543 v9fs_uint64_read(req, &attr->blksize); 544 v9fs_uint64_read(req, &attr->blocks); 545 v9fs_uint64_read(req, &attr->atime_sec); 546 v9fs_uint64_read(req, &attr->atime_nsec); 547 v9fs_uint64_read(req, &attr->mtime_sec); 548 v9fs_uint64_read(req, &attr->mtime_nsec); 549 v9fs_uint64_read(req, &attr->ctime_sec); 550 v9fs_uint64_read(req, &attr->ctime_nsec); 551 v9fs_uint64_read(req, &attr->btime_sec); 552 v9fs_uint64_read(req, &attr->btime_nsec); 553 v9fs_uint64_read(req, &attr->gen); 554 v9fs_uint64_read(req, &attr->data_version); 555 556 v9fs_req_free(req); 557 } 558 559 /* size[4] Treaddir tag[2] fid[4] offset[8] count[4] */ 560 TReadDirRes v9fs_treaddir(TReadDirOpt opt) 561 { 562 P9Req *req; 563 uint32_t err; 564 565 g_assert(opt.client); 566 /* expecting either Rreaddir or Rlerror, but obviously not both */ 567 g_assert(!opt.expectErr || !(opt.rreaddir.count || 568 opt.rreaddir.nentries || opt.rreaddir.entries)); 569 570 req = v9fs_req_init(opt.client, 4 + 8 + 4, P9_TREADDIR, opt.tag); 571 v9fs_uint32_write(req, opt.fid); 572 v9fs_uint64_write(req, opt.offset); 573 v9fs_uint32_write(req, opt.count); 574 v9fs_req_send(req); 575 576 if (!opt.requestOnly) { 577 v9fs_req_wait_for_reply(req, NULL); 578 if (opt.expectErr) { 579 v9fs_rlerror(req, &err); 580 g_assert_cmpint(err, ==, opt.expectErr); 581 } else { 582 v9fs_rreaddir(req, opt.rreaddir.count, opt.rreaddir.nentries, 583 opt.rreaddir.entries); 584 } 585 req = NULL; /* request was freed */ 586 } 587 588 return (TReadDirRes) { .req = req }; 589 } 590 591 /* size[4] Rreaddir tag[2] count[4] data[count] */ 592 void v9fs_rreaddir(P9Req *req, uint32_t *count, uint32_t *nentries, 593 struct V9fsDirent **entries) 594 { 595 uint32_t local_count; 596 struct V9fsDirent *e = NULL; 597 uint16_t slen; 598 uint32_t n = 0; 599 600 v9fs_req_recv(req, P9_RREADDIR); 601 v9fs_uint32_read(req, &local_count); 602 603 if (count) { 604 *count = local_count; 605 } 606 607 for (int32_t togo = (int32_t)local_count; 608 togo >= 13 + 8 + 1 + 2; 609 togo -= 13 + 8 + 1 + 2 + slen, ++n) 610 { 611 if (!e) { 612 e = g_new(struct V9fsDirent, 1); 613 if (entries) { 614 *entries = e; 615 } 616 } else { 617 e = e->next = g_new(struct V9fsDirent, 1); 618 } 619 e->next = NULL; 620 /* qid[13] offset[8] type[1] name[s] */ 621 v9fs_memread(req, &e->qid, 13); 622 v9fs_uint64_read(req, &e->offset); 623 v9fs_uint8_read(req, &e->type); 624 v9fs_string_read(req, &slen, &e->name); 625 } 626 627 if (nentries) { 628 *nentries = n; 629 } 630 631 v9fs_req_free(req); 632 } 633 634 void v9fs_free_dirents(struct V9fsDirent *e) 635 { 636 struct V9fsDirent *next = NULL; 637 638 for (; e; e = next) { 639 next = e->next; 640 g_free(e->name); 641 g_free(e); 642 } 643 } 644 645 /* size[4] Tlopen tag[2] fid[4] flags[4] */ 646 TLOpenRes v9fs_tlopen(TLOpenOpt opt) 647 { 648 P9Req *req; 649 uint32_t err; 650 651 g_assert(opt.client); 652 /* expecting either Rlopen or Rlerror, but obviously not both */ 653 g_assert(!opt.expectErr || !(opt.rlopen.qid || opt.rlopen.iounit)); 654 655 req = v9fs_req_init(opt.client, 4 + 4, P9_TLOPEN, opt.tag); 656 v9fs_uint32_write(req, opt.fid); 657 v9fs_uint32_write(req, opt.flags); 658 v9fs_req_send(req); 659 660 if (!opt.requestOnly) { 661 v9fs_req_wait_for_reply(req, NULL); 662 if (opt.expectErr) { 663 v9fs_rlerror(req, &err); 664 g_assert_cmpint(err, ==, opt.expectErr); 665 } else { 666 v9fs_rlopen(req, opt.rlopen.qid, opt.rlopen.iounit); 667 } 668 req = NULL; /* request was freed */ 669 } 670 671 return (TLOpenRes) { .req = req }; 672 } 673 674 /* size[4] Rlopen tag[2] qid[13] iounit[4] */ 675 void v9fs_rlopen(P9Req *req, v9fs_qid *qid, uint32_t *iounit) 676 { 677 v9fs_req_recv(req, P9_RLOPEN); 678 if (qid) { 679 v9fs_memread(req, qid, 13); 680 } else { 681 v9fs_memskip(req, 13); 682 } 683 if (iounit) { 684 v9fs_uint32_read(req, iounit); 685 } 686 v9fs_req_free(req); 687 } 688 689 /* size[4] Twrite tag[2] fid[4] offset[8] count[4] data[count] */ 690 TWriteRes v9fs_twrite(TWriteOpt opt) 691 { 692 P9Req *req; 693 uint32_t err; 694 uint32_t body_size = 4 + 8 + 4; 695 uint32_t written = 0; 696 697 g_assert(opt.client); 698 699 g_assert_cmpint(body_size, <=, UINT32_MAX - opt.count); 700 body_size += opt.count; 701 req = v9fs_req_init(opt.client, body_size, P9_TWRITE, opt.tag); 702 v9fs_uint32_write(req, opt.fid); 703 v9fs_uint64_write(req, opt.offset); 704 v9fs_uint32_write(req, opt.count); 705 v9fs_memwrite(req, opt.data, opt.count); 706 v9fs_req_send(req); 707 708 if (!opt.requestOnly) { 709 v9fs_req_wait_for_reply(req, NULL); 710 if (opt.expectErr) { 711 v9fs_rlerror(req, &err); 712 g_assert_cmpint(err, ==, opt.expectErr); 713 } else { 714 v9fs_rwrite(req, &written); 715 } 716 req = NULL; /* request was freed */ 717 } 718 719 return (TWriteRes) { 720 .req = req, 721 .count = written 722 }; 723 } 724 725 /* size[4] Rwrite tag[2] count[4] */ 726 void v9fs_rwrite(P9Req *req, uint32_t *count) 727 { 728 v9fs_req_recv(req, P9_RWRITE); 729 if (count) { 730 v9fs_uint32_read(req, count); 731 } 732 v9fs_req_free(req); 733 } 734 735 /* size[4] Tflush tag[2] oldtag[2] */ 736 TFlushRes v9fs_tflush(TFlushOpt opt) 737 { 738 P9Req *req; 739 uint32_t err; 740 741 g_assert(opt.client); 742 743 req = v9fs_req_init(opt.client, 2, P9_TFLUSH, opt.tag); 744 v9fs_uint32_write(req, opt.oldtag); 745 v9fs_req_send(req); 746 747 if (!opt.requestOnly) { 748 v9fs_req_wait_for_reply(req, NULL); 749 if (opt.expectErr) { 750 v9fs_rlerror(req, &err); 751 g_assert_cmpint(err, ==, opt.expectErr); 752 } else { 753 v9fs_rflush(req); 754 } 755 req = NULL; /* request was freed */ 756 } 757 758 return (TFlushRes) { .req = req }; 759 } 760 761 /* size[4] Rflush tag[2] */ 762 void v9fs_rflush(P9Req *req) 763 { 764 v9fs_req_recv(req, P9_RFLUSH); 765 v9fs_req_free(req); 766 } 767 768 /* size[4] Tmkdir tag[2] dfid[4] name[s] mode[4] gid[4] */ 769 TMkdirRes v9fs_tmkdir(TMkdirOpt opt) 770 { 771 P9Req *req; 772 uint32_t err; 773 774 g_assert(opt.client); 775 /* expecting either hi-level atPath or low-level dfid, but not both */ 776 g_assert(!opt.atPath || !opt.dfid); 777 /* expecting either Rmkdir or Rlerror, but obviously not both */ 778 g_assert(!opt.expectErr || !opt.rmkdir.qid); 779 780 if (opt.atPath) { 781 opt.dfid = v9fs_twalk((TWalkOpt) { .client = opt.client, 782 .path = opt.atPath }).newfid; 783 } 784 785 if (!opt.mode) { 786 opt.mode = 0750; 787 } 788 789 uint32_t body_size = 4 + 4 + 4; 790 uint16_t string_size = v9fs_string_size(opt.name); 791 792 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 793 body_size += string_size; 794 795 req = v9fs_req_init(opt.client, body_size, P9_TMKDIR, opt.tag); 796 v9fs_uint32_write(req, opt.dfid); 797 v9fs_string_write(req, opt.name); 798 v9fs_uint32_write(req, opt.mode); 799 v9fs_uint32_write(req, opt.gid); 800 v9fs_req_send(req); 801 802 if (!opt.requestOnly) { 803 v9fs_req_wait_for_reply(req, NULL); 804 if (opt.expectErr) { 805 v9fs_rlerror(req, &err); 806 g_assert_cmpint(err, ==, opt.expectErr); 807 } else { 808 v9fs_rmkdir(req, opt.rmkdir.qid); 809 } 810 req = NULL; /* request was freed */ 811 } 812 813 return (TMkdirRes) { .req = req }; 814 } 815 816 /* size[4] Rmkdir tag[2] qid[13] */ 817 void v9fs_rmkdir(P9Req *req, v9fs_qid *qid) 818 { 819 v9fs_req_recv(req, P9_RMKDIR); 820 if (qid) { 821 v9fs_memread(req, qid, 13); 822 } else { 823 v9fs_memskip(req, 13); 824 } 825 v9fs_req_free(req); 826 } 827 828 /* size[4] Tlcreate tag[2] fid[4] name[s] flags[4] mode[4] gid[4] */ 829 TlcreateRes v9fs_tlcreate(TlcreateOpt opt) 830 { 831 P9Req *req; 832 uint32_t err; 833 834 g_assert(opt.client); 835 /* expecting either hi-level atPath or low-level fid, but not both */ 836 g_assert(!opt.atPath || !opt.fid); 837 /* expecting either Rlcreate or Rlerror, but obviously not both */ 838 g_assert(!opt.expectErr || !(opt.rlcreate.qid || opt.rlcreate.iounit)); 839 840 if (opt.atPath) { 841 opt.fid = v9fs_twalk((TWalkOpt) { .client = opt.client, 842 .path = opt.atPath }).newfid; 843 } 844 845 if (!opt.mode) { 846 opt.mode = 0750; 847 } 848 849 uint32_t body_size = 4 + 4 + 4 + 4; 850 uint16_t string_size = v9fs_string_size(opt.name); 851 852 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 853 body_size += string_size; 854 855 req = v9fs_req_init(opt.client, body_size, P9_TLCREATE, opt.tag); 856 v9fs_uint32_write(req, opt.fid); 857 v9fs_string_write(req, opt.name); 858 v9fs_uint32_write(req, opt.flags); 859 v9fs_uint32_write(req, opt.mode); 860 v9fs_uint32_write(req, opt.gid); 861 v9fs_req_send(req); 862 863 if (!opt.requestOnly) { 864 v9fs_req_wait_for_reply(req, NULL); 865 if (opt.expectErr) { 866 v9fs_rlerror(req, &err); 867 g_assert_cmpint(err, ==, opt.expectErr); 868 } else { 869 v9fs_rlcreate(req, opt.rlcreate.qid, opt.rlcreate.iounit); 870 } 871 req = NULL; /* request was freed */ 872 } 873 874 return (TlcreateRes) { .req = req }; 875 } 876 877 /* size[4] Rlcreate tag[2] qid[13] iounit[4] */ 878 void v9fs_rlcreate(P9Req *req, v9fs_qid *qid, uint32_t *iounit) 879 { 880 v9fs_req_recv(req, P9_RLCREATE); 881 if (qid) { 882 v9fs_memread(req, qid, 13); 883 } else { 884 v9fs_memskip(req, 13); 885 } 886 if (iounit) { 887 v9fs_uint32_read(req, iounit); 888 } 889 v9fs_req_free(req); 890 } 891 892 /* size[4] Tsymlink tag[2] fid[4] name[s] symtgt[s] gid[4] */ 893 TsymlinkRes v9fs_tsymlink(TsymlinkOpt opt) 894 { 895 P9Req *req; 896 uint32_t err; 897 898 g_assert(opt.client); 899 /* expecting either hi-level atPath or low-level fid, but not both */ 900 g_assert(!opt.atPath || !opt.fid); 901 /* expecting either Rsymlink or Rlerror, but obviously not both */ 902 g_assert(!opt.expectErr || !opt.rsymlink.qid); 903 904 if (opt.atPath) { 905 opt.fid = v9fs_twalk((TWalkOpt) { .client = opt.client, 906 .path = opt.atPath }).newfid; 907 } 908 909 uint32_t body_size = 4 + 4; 910 uint16_t string_size = v9fs_string_size(opt.name) + 911 v9fs_string_size(opt.symtgt); 912 913 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 914 body_size += string_size; 915 916 req = v9fs_req_init(opt.client, body_size, P9_TSYMLINK, opt.tag); 917 v9fs_uint32_write(req, opt.fid); 918 v9fs_string_write(req, opt.name); 919 v9fs_string_write(req, opt.symtgt); 920 v9fs_uint32_write(req, opt.gid); 921 v9fs_req_send(req); 922 923 if (!opt.requestOnly) { 924 v9fs_req_wait_for_reply(req, NULL); 925 if (opt.expectErr) { 926 v9fs_rlerror(req, &err); 927 g_assert_cmpint(err, ==, opt.expectErr); 928 } else { 929 v9fs_rsymlink(req, opt.rsymlink.qid); 930 } 931 req = NULL; /* request was freed */ 932 } 933 934 return (TsymlinkRes) { .req = req }; 935 } 936 937 /* size[4] Rsymlink tag[2] qid[13] */ 938 void v9fs_rsymlink(P9Req *req, v9fs_qid *qid) 939 { 940 v9fs_req_recv(req, P9_RSYMLINK); 941 if (qid) { 942 v9fs_memread(req, qid, 13); 943 } else { 944 v9fs_memskip(req, 13); 945 } 946 v9fs_req_free(req); 947 } 948 949 /* size[4] Tlink tag[2] dfid[4] fid[4] name[s] */ 950 TlinkRes v9fs_tlink(TlinkOpt opt) 951 { 952 P9Req *req; 953 uint32_t err; 954 955 g_assert(opt.client); 956 /* expecting either hi-level atPath or low-level dfid, but not both */ 957 g_assert(!opt.atPath || !opt.dfid); 958 /* expecting either hi-level toPath or low-level fid, but not both */ 959 g_assert(!opt.toPath || !opt.fid); 960 961 if (opt.atPath) { 962 opt.dfid = v9fs_twalk((TWalkOpt) { .client = opt.client, 963 .path = opt.atPath }).newfid; 964 } 965 if (opt.toPath) { 966 opt.fid = v9fs_twalk((TWalkOpt) { .client = opt.client, 967 .path = opt.toPath }).newfid; 968 } 969 970 uint32_t body_size = 4 + 4; 971 uint16_t string_size = v9fs_string_size(opt.name); 972 973 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 974 body_size += string_size; 975 976 req = v9fs_req_init(opt.client, body_size, P9_TLINK, opt.tag); 977 v9fs_uint32_write(req, opt.dfid); 978 v9fs_uint32_write(req, opt.fid); 979 v9fs_string_write(req, opt.name); 980 v9fs_req_send(req); 981 982 if (!opt.requestOnly) { 983 v9fs_req_wait_for_reply(req, NULL); 984 if (opt.expectErr) { 985 v9fs_rlerror(req, &err); 986 g_assert_cmpint(err, ==, opt.expectErr); 987 } else { 988 v9fs_rlink(req); 989 } 990 req = NULL; /* request was freed */ 991 } 992 993 return (TlinkRes) { .req = req }; 994 } 995 996 /* size[4] Rlink tag[2] */ 997 void v9fs_rlink(P9Req *req) 998 { 999 v9fs_req_recv(req, P9_RLINK); 1000 v9fs_req_free(req); 1001 } 1002 1003 /* size[4] Tunlinkat tag[2] dirfd[4] name[s] flags[4] */ 1004 TunlinkatRes v9fs_tunlinkat(TunlinkatOpt opt) 1005 { 1006 P9Req *req; 1007 uint32_t err; 1008 1009 g_assert(opt.client); 1010 /* expecting either hi-level atPath or low-level dirfd, but not both */ 1011 g_assert(!opt.atPath || !opt.dirfd); 1012 1013 if (opt.atPath) { 1014 opt.dirfd = v9fs_twalk((TWalkOpt) { .client = opt.client, 1015 .path = opt.atPath }).newfid; 1016 } 1017 1018 uint32_t body_size = 4 + 4; 1019 uint16_t string_size = v9fs_string_size(opt.name); 1020 1021 g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); 1022 body_size += string_size; 1023 1024 req = v9fs_req_init(opt.client, body_size, P9_TUNLINKAT, opt.tag); 1025 v9fs_uint32_write(req, opt.dirfd); 1026 v9fs_string_write(req, opt.name); 1027 v9fs_uint32_write(req, opt.flags); 1028 v9fs_req_send(req); 1029 1030 if (!opt.requestOnly) { 1031 v9fs_req_wait_for_reply(req, NULL); 1032 if (opt.expectErr) { 1033 v9fs_rlerror(req, &err); 1034 g_assert_cmpint(err, ==, opt.expectErr); 1035 } else { 1036 v9fs_runlinkat(req); 1037 } 1038 req = NULL; /* request was freed */ 1039 } 1040 1041 return (TunlinkatRes) { .req = req }; 1042 } 1043 1044 /* size[4] Runlinkat tag[2] */ 1045 void v9fs_runlinkat(P9Req *req) 1046 { 1047 v9fs_req_recv(req, P9_RUNLINKAT); 1048 v9fs_req_free(req); 1049 }