| 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 "qemu/bswap.h" |
| 17 | #include "virtio-9p-client.h" |
| 18 | |
| 19 | #define QVIRTIO_9P_TIMEOUT_US (10 * 1000 * 1000) |
| 20 | static QGuestAllocator *alloc; |
| 21 | |
| 22 | void v9fs_set_allocator(QGuestAllocator *t_alloc) |
| 23 | { |
| 24 | alloc = t_alloc; |
| 25 | } |
| 26 | |
| 27 | /* |
| 28 | * Used to auto generate new fids. Start with arbitrary high value to avoid |
| 29 | * collision with hard coded fids in basic test code. |
| 30 | */ |
| 31 | static uint32_t fid_generator = 1000; |
| 32 | |
| 33 | static uint32_t genfid(void) |
| 34 | { |
| 35 | return fid_generator++; |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Splits the @a in string by @a delim into individual (non empty) strings |
| 40 | * and outputs them to @a out. The output array @a out is NULL terminated. |
| 41 | * |
| 42 | * Output array @a out must be freed by calling split_free(). |
| 43 | * |
| 44 | * @returns number of individual elements in output array @a out (without the |
| 45 | * final NULL terminating element) |
| 46 | */ |
| 47 | static int split(const char *in, const char *delim, char ***out) |
| 48 | { |
| 49 | int n = 0, i = 0; |
| 50 | char *tmp, *p; |
| 51 | |
| 52 | tmp = g_strdup(in); |
| 53 | for (p = strtok(tmp, delim); p != NULL; p = strtok(NULL, delim)) { |
| 54 | if (strlen(p) > 0) { |
| 55 | ++n; |
| 56 | } |
| 57 | } |
| 58 | g_free(tmp); |
| 59 | |
| 60 | *out = g_new0(char *, n + 1); /* last element NULL delimiter */ |
| 61 | |
| 62 | tmp = g_strdup(in); |
| 63 | for (p = strtok(tmp, delim); p != NULL; p = strtok(NULL, delim)) { |
| 64 | if (strlen(p) > 0) { |
| 65 | (*out)[i++] = g_strdup(p); |
| 66 | } |
| 67 | } |
| 68 | g_free(tmp); |
| 69 | |
| 70 | return n; |
| 71 | } |
| 72 | |
| 73 | static void split_free(char ***out) |
| 74 | { |
| 75 | int i; |
| 76 | if (!*out) { |
| 77 | return; |
| 78 | } |
| 79 | for (i = 0; (*out)[i]; ++i) { |
| 80 | g_free((*out)[i]); |
| 81 | } |
| 82 | g_free(*out); |
| 83 | *out = NULL; |
| 84 | } |
| 85 | |
| 86 | void v9fs_memwrite(P9Req *req, const void *addr, size_t len) |
| 87 | { |
| 88 | qtest_memwrite(req->qts, req->t_msg + req->t_off, addr, len); |
| 89 | req->t_off += len; |
| 90 | } |
| 91 | |
| 92 | void v9fs_memskip(P9Req *req, size_t len) |
| 93 | { |
| 94 | req->r_off += len; |
| 95 | } |
| 96 | |
| 97 | void v9fs_memread(P9Req *req, void *addr, size_t len) |
| 98 | { |
| 99 | qtest_memread(req->qts, req->r_msg + req->r_off, addr, len); |
| 100 | req->r_off += len; |
| 101 | } |
| 102 | |
| 103 | void v9fs_uint8_read(P9Req *req, uint8_t *val) |
| 104 | { |
| 105 | v9fs_memread(req, val, 1); |
| 106 | } |
| 107 | |
| 108 | void v9fs_uint16_write(P9Req *req, uint16_t val) |
| 109 | { |
| 110 | uint16_t le_val = cpu_to_le16(val); |
| 111 | |
| 112 | v9fs_memwrite(req, &le_val, 2); |
| 113 | } |
| 114 | |
| 115 | void v9fs_uint16_read(P9Req *req, uint16_t *val) |
| 116 | { |
| 117 | v9fs_memread(req, val, 2); |
| 118 | le16_to_cpus(val); |
| 119 | } |
| 120 | |
| 121 | void v9fs_uint32_write(P9Req *req, uint32_t val) |
| 122 | { |
| 123 | uint32_t le_val = cpu_to_le32(val); |
| 124 | |
| 125 | v9fs_memwrite(req, &le_val, 4); |
| 126 | } |
| 127 | |
| 128 | void v9fs_uint64_write(P9Req *req, uint64_t val) |
| 129 | { |
| 130 | uint64_t le_val = cpu_to_le64(val); |
| 131 | |
| 132 | v9fs_memwrite(req, &le_val, 8); |
| 133 | } |
| 134 | |
| 135 | void v9fs_uint32_read(P9Req *req, uint32_t *val) |
| 136 | { |
| 137 | v9fs_memread(req, val, 4); |
| 138 | le32_to_cpus(val); |
| 139 | } |
| 140 | |
| 141 | void v9fs_uint64_read(P9Req *req, uint64_t *val) |
| 142 | { |
| 143 | v9fs_memread(req, val, 8); |
| 144 | le64_to_cpus(val); |
| 145 | } |
| 146 | |
| 147 | /* len[2] string[len] */ |
| 148 | uint16_t v9fs_string_size(const char *string) |
| 149 | { |
| 150 | size_t len = strlen(string); |
| 151 | |
| 152 | g_assert_cmpint(len, <=, UINT16_MAX - 2); |
| 153 | |
| 154 | return 2 + len; |
| 155 | } |
| 156 | |
| 157 | void v9fs_string_write(P9Req *req, const char *string) |
| 158 | { |
| 159 | int len = strlen(string); |
| 160 | |
| 161 | g_assert_cmpint(len, <=, UINT16_MAX); |
| 162 | |
| 163 | v9fs_uint16_write(req, (uint16_t) len); |
| 164 | v9fs_memwrite(req, string, len); |
| 165 | } |
| 166 | |
| 167 | void v9fs_string_read(P9Req *req, uint16_t *len, char **string) |
| 168 | { |
| 169 | uint16_t local_len; |
| 170 | |
| 171 | v9fs_uint16_read(req, &local_len); |
| 172 | if (len) { |
| 173 | *len = local_len; |
| 174 | } |
| 175 | if (string) { |
| 176 | *string = g_malloc(local_len + 1); |
| 177 | v9fs_memread(req, *string, local_len); |
| 178 | (*string)[local_len] = 0; |
| 179 | } else { |
| 180 | v9fs_memskip(req, local_len); |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | typedef struct { |
| 185 | uint32_t size; |
| 186 | uint8_t id; |
| 187 | uint16_t tag; |
| 188 | } QEMU_PACKED P9Hdr; |
| 189 | |
| 190 | P9Req *v9fs_req_init(QVirtio9P *v9p, uint32_t size, uint8_t id, |
| 191 | uint16_t tag) |
| 192 | { |
| 193 | P9Req *req = g_new0(P9Req, 1); |
| 194 | uint32_t total_size = 7; /* 9P header has well-known size of 7 bytes */ |
| 195 | P9Hdr hdr = { |
| 196 | .id = id, |
| 197 | .tag = cpu_to_le16(tag) |
| 198 | }; |
| 199 | |
| 200 | g_assert_cmpint(total_size, <=, UINT32_MAX - size); |
| 201 | total_size += size; |
| 202 | hdr.size = cpu_to_le32(total_size); |
| 203 | |
| 204 | g_assert_cmpint(total_size, <=, P9_MAX_SIZE); |
| 205 | |
| 206 | req->qts = global_qtest; |
| 207 | req->v9p = v9p; |
| 208 | req->t_size = total_size; |
| 209 | req->t_msg = guest_alloc(alloc, req->t_size); |
| 210 | v9fs_memwrite(req, &hdr, 7); |
| 211 | req->tag = tag; |
| 212 | return req; |
| 213 | } |
| 214 | |
| 215 | void v9fs_req_send(P9Req *req) |
| 216 | { |
| 217 | QVirtio9P *v9p = req->v9p; |
| 218 | |
| 219 | req->r_msg = guest_alloc(alloc, P9_MAX_SIZE); |
| 220 | req->free_head = qvirtqueue_add(req->qts, v9p->vq, req->t_msg, req->t_size, |
| 221 | false, true); |
| 222 | qvirtqueue_add(req->qts, v9p->vq, req->r_msg, P9_MAX_SIZE, true, false); |
| 223 | qvirtqueue_kick(req->qts, v9p->vdev, v9p->vq, req->free_head); |
| 224 | req->t_off = 0; |
| 225 | } |
| 226 | |
| 227 | static const char *rmessage_name(uint8_t id) |
| 228 | { |
| 229 | return |
| 230 | id == P9_RLERROR ? "RLERROR" : |
| 231 | id == P9_RVERSION ? "RVERSION" : |
| 232 | id == P9_RATTACH ? "RATTACH" : |
| 233 | id == P9_RWALK ? "RWALK" : |
| 234 | id == P9_RLOPEN ? "RLOPEN" : |
| 235 | id == P9_RWRITE ? "RWRITE" : |
| 236 | id == P9_RMKDIR ? "RMKDIR" : |
| 237 | id == P9_RLCREATE ? "RLCREATE" : |
| 238 | id == P9_RSYMLINK ? "RSYMLINK" : |
| 239 | id == P9_RGETATTR ? "RGETATTR" : |
| 240 | id == P9_RLINK ? "RLINK" : |
| 241 | id == P9_RUNLINKAT ? "RUNLINKAT" : |
| 242 | id == P9_RFLUSH ? "RFLUSH" : |
| 243 | id == P9_RREADDIR ? "RREADDIR" : |
| 244 | id == P9_RREAD ? "RREAD" : |
| 245 | id == P9_RCLUNK ? "RCLUNK" : |
| 246 | id == P9_RXATTRCREATE ? "RXATTRCREATE" : |
| 247 | "<unknown>"; |
| 248 | } |
| 249 | |
| 250 | void v9fs_req_wait_for_reply(P9Req *req, uint32_t *len) |
| 251 | { |
| 252 | QVirtio9P *v9p = req->v9p; |
| 253 | |
| 254 | qvirtio_wait_used_elem(req->qts, v9p->vdev, v9p->vq, req->free_head, len, |
| 255 | QVIRTIO_9P_TIMEOUT_US); |
| 256 | } |
| 257 | |
| 258 | void v9fs_req_recv(P9Req *req, uint8_t id) |
| 259 | { |
| 260 | P9Hdr hdr; |
| 261 | |
| 262 | v9fs_memread(req, &hdr, 7); |
| 263 | hdr.size = ldl_le_p(&hdr.size); |
| 264 | hdr.tag = lduw_le_p(&hdr.tag); |
| 265 | |
| 266 | g_assert_cmpint(hdr.size, >=, 7); |
| 267 | g_assert_cmpint(hdr.size, <=, P9_MAX_SIZE); |
| 268 | g_assert_cmpint(hdr.tag, ==, req->tag); |
| 269 | |
| 270 | if (hdr.id != id) { |
| 271 | g_printerr("Received response %d (%s) instead of %d (%s)\n", |
| 272 | hdr.id, rmessage_name(hdr.id), id, rmessage_name(id)); |
| 273 | |
| 274 | if (hdr.id == P9_RLERROR) { |
| 275 | uint32_t err; |
| 276 | v9fs_uint32_read(req, &err); |
| 277 | g_printerr("Rlerror has errno %d (%s)\n", err, strerror(err)); |
| 278 | } |
| 279 | } |
| 280 | g_assert_cmpint(hdr.id, ==, id); |
| 281 | } |
| 282 | |
| 283 | void v9fs_req_free(P9Req *req) |
| 284 | { |
| 285 | guest_free(alloc, req->t_msg); |
| 286 | guest_free(alloc, req->r_msg); |
| 287 | g_free(req); |
| 288 | } |
| 289 | |
| 290 | /* size[4] Rlerror tag[2] ecode[4] */ |
| 291 | void v9fs_rlerror(P9Req *req, uint32_t *err) |
| 292 | { |
| 293 | v9fs_req_recv(req, P9_RLERROR); |
| 294 | v9fs_uint32_read(req, err); |
| 295 | v9fs_req_free(req); |
| 296 | } |
| 297 | |
| 298 | /* size[4] Tversion tag[2] msize[4] version[s] */ |
| 299 | TVersionRes v9fs_tversion(TVersionOpt opt) |
| 300 | { |
| 301 | P9Req *req; |
| 302 | uint32_t err; |
| 303 | uint32_t body_size = 4; |
| 304 | uint16_t string_size; |
| 305 | uint16_t server_len; |
| 306 | g_autofree char *server_version = NULL; |
| 307 | |
| 308 | g_assert(opt.client); |
| 309 | |
| 310 | if (!opt.msize) { |
| 311 | opt.msize = P9_MAX_SIZE; |
| 312 | } |
| 313 | |
| 314 | if (!opt.tag) { |
| 315 | opt.tag = P9_NOTAG; |
| 316 | } |
| 317 | |
| 318 | if (!opt.version) { |
| 319 | opt.version = "9P2000.L"; |
| 320 | } |
| 321 | |
| 322 | string_size = v9fs_string_size(opt.version); |
| 323 | g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); |
| 324 | body_size += string_size; |
| 325 | req = v9fs_req_init(opt.client, body_size, P9_TVERSION, opt.tag); |
| 326 | |
| 327 | v9fs_uint32_write(req, opt.msize); |
| 328 | v9fs_string_write(req, opt.version); |
| 329 | v9fs_req_send(req); |
| 330 | |
| 331 | if (!opt.requestOnly) { |
| 332 | v9fs_req_wait_for_reply(req, NULL); |
| 333 | if (opt.expectErr) { |
| 334 | v9fs_rlerror(req, &err); |
| 335 | g_assert_cmpint(err, ==, opt.expectErr); |
| 336 | } else { |
| 337 | v9fs_rversion(req, &server_len, &server_version); |
| 338 | g_assert_cmpmem(server_version, server_len, |
| 339 | opt.version, strlen(opt.version)); |
| 340 | } |
| 341 | req = NULL; /* request was freed */ |
| 342 | } |
| 343 | |
| 344 | return (TVersionRes) { |
| 345 | .req = req, |
| 346 | }; |
| 347 | } |
| 348 | |
| 349 | /* size[4] Rversion tag[2] msize[4] version[s] */ |
| 350 | void v9fs_rversion(P9Req *req, uint16_t *len, char **version) |
| 351 | { |
| 352 | uint32_t msize; |
| 353 | |
| 354 | v9fs_req_recv(req, P9_RVERSION); |
| 355 | v9fs_uint32_read(req, &msize); |
| 356 | |
| 357 | g_assert_cmpint(msize, ==, P9_MAX_SIZE); |
| 358 | |
| 359 | if (len || version) { |
| 360 | v9fs_string_read(req, len, version); |
| 361 | } |
| 362 | |
| 363 | v9fs_req_free(req); |
| 364 | } |
| 365 | |
| 366 | /* size[4] Tattach tag[2] fid[4] afid[4] uname[s] aname[s] n_uname[4] */ |
| 367 | TAttachRes v9fs_tattach(TAttachOpt opt) |
| 368 | { |
| 369 | uint32_t err; |
| 370 | const char *uname = ""; /* ignored by QEMU */ |
| 371 | const char *aname = ""; /* ignored by QEMU */ |
| 372 | |
| 373 | g_assert(opt.client); |
| 374 | /* expecting either Rattach or Rlerror, but obviously not both */ |
| 375 | g_assert(!opt.expectErr || !opt.rattach.qid); |
| 376 | |
| 377 | if (!opt.requestOnly) { |
| 378 | v9fs_tversion((TVersionOpt) { .client = opt.client }); |
| 379 | } |
| 380 | |
| 381 | if (!opt.n_uname) { |
| 382 | opt.n_uname = getuid(); |
| 383 | } |
| 384 | |
| 385 | P9Req *req = v9fs_req_init(opt.client, 4 + 4 + 2 + 2 + 4, P9_TATTACH, |
| 386 | opt.tag); |
| 387 | |
| 388 | v9fs_uint32_write(req, opt.fid); |
| 389 | v9fs_uint32_write(req, P9_NOFID); |
| 390 | v9fs_string_write(req, uname); |
| 391 | v9fs_string_write(req, aname); |
| 392 | v9fs_uint32_write(req, opt.n_uname); |
| 393 | v9fs_req_send(req); |
| 394 | |
| 395 | if (!opt.requestOnly) { |
| 396 | v9fs_req_wait_for_reply(req, NULL); |
| 397 | if (opt.expectErr) { |
| 398 | v9fs_rlerror(req, &err); |
| 399 | g_assert_cmpint(err, ==, opt.expectErr); |
| 400 | } else { |
| 401 | v9fs_rattach(req, opt.rattach.qid); |
| 402 | } |
| 403 | req = NULL; /* request was freed */ |
| 404 | } |
| 405 | |
| 406 | return (TAttachRes) { |
| 407 | .req = req, |
| 408 | }; |
| 409 | } |
| 410 | |
| 411 | /* size[4] Rattach tag[2] qid[13] */ |
| 412 | void v9fs_rattach(P9Req *req, v9fs_qid *qid) |
| 413 | { |
| 414 | v9fs_req_recv(req, P9_RATTACH); |
| 415 | if (qid) { |
| 416 | v9fs_memread(req, qid, 13); |
| 417 | } |
| 418 | v9fs_req_free(req); |
| 419 | } |
| 420 | |
| 421 | /* size[4] Twalk tag[2] fid[4] newfid[4] nwname[2] nwname*(wname[s]) */ |
| 422 | TWalkRes v9fs_twalk(TWalkOpt opt) |
| 423 | { |
| 424 | P9Req *req; |
| 425 | int i; |
| 426 | uint32_t body_size = 4 + 4 + 2; |
| 427 | uint32_t err; |
| 428 | char **wnames = NULL; |
| 429 | |
| 430 | g_assert(opt.client); |
| 431 | /* expecting either high- or low-level path, both not both */ |
| 432 | g_assert(!opt.path || !(opt.nwname || opt.wnames)); |
| 433 | /* expecting either Rwalk or Rlerror, but obviously not both */ |
| 434 | g_assert(!opt.expectErr || !(opt.rwalk.nwqid || opt.rwalk.wqid)); |
| 435 | |
| 436 | if (!opt.newfid) { |
| 437 | opt.newfid = genfid(); |
| 438 | } |
| 439 | |
| 440 | if (opt.path) { |
| 441 | opt.nwname = split(opt.path, "/", &wnames); |
| 442 | opt.wnames = wnames; |
| 443 | } |
| 444 | |
| 445 | for (i = 0; i < opt.nwname; i++) { |
| 446 | uint16_t wname_size = v9fs_string_size(opt.wnames[i]); |
| 447 | |
| 448 | g_assert_cmpint(body_size, <=, UINT32_MAX - wname_size); |
| 449 | body_size += wname_size; |
| 450 | } |
| 451 | req = v9fs_req_init(opt.client, body_size, P9_TWALK, opt.tag); |
| 452 | v9fs_uint32_write(req, opt.fid); |
| 453 | v9fs_uint32_write(req, opt.newfid); |
| 454 | v9fs_uint16_write(req, opt.nwname); |
| 455 | for (i = 0; i < opt.nwname; i++) { |
| 456 | v9fs_string_write(req, opt.wnames[i]); |
| 457 | } |
| 458 | v9fs_req_send(req); |
| 459 | |
| 460 | if (!opt.requestOnly) { |
| 461 | v9fs_req_wait_for_reply(req, NULL); |
| 462 | if (opt.expectErr) { |
| 463 | v9fs_rlerror(req, &err); |
| 464 | g_assert_cmpint(err, ==, opt.expectErr); |
| 465 | } else { |
| 466 | v9fs_rwalk(req, opt.rwalk.nwqid, opt.rwalk.wqid); |
| 467 | } |
| 468 | req = NULL; /* request was freed */ |
| 469 | } |
| 470 | |
| 471 | split_free(&wnames); |
| 472 | |
| 473 | return (TWalkRes) { |
| 474 | .newfid = opt.newfid, |
| 475 | .req = req, |
| 476 | }; |
| 477 | } |
| 478 | |
| 479 | /* size[4] Rwalk tag[2] nwqid[2] nwqid*(wqid[13]) */ |
| 480 | void v9fs_rwalk(P9Req *req, uint16_t *nwqid, v9fs_qid **wqid) |
| 481 | { |
| 482 | uint16_t local_nwqid; |
| 483 | |
| 484 | v9fs_req_recv(req, P9_RWALK); |
| 485 | v9fs_uint16_read(req, &local_nwqid); |
| 486 | if (nwqid) { |
| 487 | *nwqid = local_nwqid; |
| 488 | } |
| 489 | if (wqid) { |
| 490 | *wqid = g_malloc(local_nwqid * 13); |
| 491 | v9fs_memread(req, *wqid, local_nwqid * 13); |
| 492 | } |
| 493 | v9fs_req_free(req); |
| 494 | } |
| 495 | |
| 496 | /* size[4] Tgetattr tag[2] fid[4] request_mask[8] */ |
| 497 | TGetAttrRes v9fs_tgetattr(TGetAttrOpt opt) |
| 498 | { |
| 499 | P9Req *req; |
| 500 | uint32_t err; |
| 501 | |
| 502 | g_assert(opt.client); |
| 503 | /* expecting either Rgetattr or Rlerror, but obviously not both */ |
| 504 | g_assert(!opt.expectErr || !opt.rgetattr.attr); |
| 505 | |
| 506 | if (!opt.request_mask) { |
| 507 | opt.request_mask = P9_GETATTR_ALL; |
| 508 | } |
| 509 | |
| 510 | req = v9fs_req_init(opt.client, 4 + 8, P9_TGETATTR, opt.tag); |
| 511 | v9fs_uint32_write(req, opt.fid); |
| 512 | v9fs_uint64_write(req, opt.request_mask); |
| 513 | v9fs_req_send(req); |
| 514 | |
| 515 | if (!opt.requestOnly) { |
| 516 | v9fs_req_wait_for_reply(req, NULL); |
| 517 | if (opt.expectErr) { |
| 518 | v9fs_rlerror(req, &err); |
| 519 | g_assert_cmpint(err, ==, opt.expectErr); |
| 520 | } else { |
| 521 | v9fs_rgetattr(req, opt.rgetattr.attr); |
| 522 | } |
| 523 | req = NULL; /* request was freed */ |
| 524 | } |
| 525 | |
| 526 | return (TGetAttrRes) { .req = req }; |
| 527 | } |
| 528 | |
| 529 | /* |
| 530 | * size[4] Rgetattr tag[2] valid[8] qid[13] mode[4] uid[4] gid[4] nlink[8] |
| 531 | * rdev[8] size[8] blksize[8] blocks[8] |
| 532 | * atime_sec[8] atime_nsec[8] mtime_sec[8] mtime_nsec[8] |
| 533 | * ctime_sec[8] ctime_nsec[8] btime_sec[8] btime_nsec[8] |
| 534 | * gen[8] data_version[8] |
| 535 | */ |
| 536 | void v9fs_rgetattr(P9Req *req, v9fs_attr *attr) |
| 537 | { |
| 538 | v9fs_req_recv(req, P9_RGETATTR); |
| 539 | |
| 540 | v9fs_uint64_read(req, &attr->valid); |
| 541 | v9fs_memread(req, &attr->qid, 13); |
| 542 | v9fs_uint32_read(req, &attr->mode); |
| 543 | v9fs_uint32_read(req, &attr->uid); |
| 544 | v9fs_uint32_read(req, &attr->gid); |
| 545 | v9fs_uint64_read(req, &attr->nlink); |
| 546 | v9fs_uint64_read(req, &attr->rdev); |
| 547 | v9fs_uint64_read(req, &attr->size); |
| 548 | v9fs_uint64_read(req, &attr->blksize); |
| 549 | v9fs_uint64_read(req, &attr->blocks); |
| 550 | v9fs_uint64_read(req, &attr->atime_sec); |
| 551 | v9fs_uint64_read(req, &attr->atime_nsec); |
| 552 | v9fs_uint64_read(req, &attr->mtime_sec); |
| 553 | v9fs_uint64_read(req, &attr->mtime_nsec); |
| 554 | v9fs_uint64_read(req, &attr->ctime_sec); |
| 555 | v9fs_uint64_read(req, &attr->ctime_nsec); |
| 556 | v9fs_uint64_read(req, &attr->btime_sec); |
| 557 | v9fs_uint64_read(req, &attr->btime_nsec); |
| 558 | v9fs_uint64_read(req, &attr->gen); |
| 559 | v9fs_uint64_read(req, &attr->data_version); |
| 560 | |
| 561 | v9fs_req_free(req); |
| 562 | } |
| 563 | |
| 564 | /* |
| 565 | * size[4] Tsetattr tag[2] fid[4] valid[4] mode[4] uid[4] gid[4] size[8] |
| 566 | * atime_sec[8] atime_nsec[8] mtime_sec[8] mtime_nsec[8] |
| 567 | */ |
| 568 | TSetAttrRes v9fs_tsetattr(TSetAttrOpt opt) |
| 569 | { |
| 570 | P9Req *req; |
| 571 | uint32_t err; |
| 572 | |
| 573 | g_assert(opt.client); |
| 574 | |
| 575 | req = v9fs_req_init( |
| 576 | opt.client, 4/*fid*/ + 4/*valid*/ + 4/*mode*/ + 4/*uid*/ + 4/*gid*/ + |
| 577 | 8/*size*/ + 8/*atime_sec*/ + 8/*atime_nsec*/ + 8/*mtime_sec*/ + |
| 578 | 8/*mtime_nsec*/, P9_TSETATTR, opt.tag |
| 579 | ); |
| 580 | v9fs_uint32_write(req, opt.fid); |
| 581 | v9fs_uint32_write(req, (uint32_t) opt.attr.valid); |
| 582 | v9fs_uint32_write(req, opt.attr.mode); |
| 583 | v9fs_uint32_write(req, opt.attr.uid); |
| 584 | v9fs_uint32_write(req, opt.attr.gid); |
| 585 | v9fs_uint64_write(req, opt.attr.size); |
| 586 | v9fs_uint64_write(req, opt.attr.atime_sec); |
| 587 | v9fs_uint64_write(req, opt.attr.atime_nsec); |
| 588 | v9fs_uint64_write(req, opt.attr.mtime_sec); |
| 589 | v9fs_uint64_write(req, opt.attr.mtime_nsec); |
| 590 | v9fs_req_send(req); |
| 591 | |
| 592 | if (!opt.requestOnly) { |
| 593 | v9fs_req_wait_for_reply(req, NULL); |
| 594 | if (opt.expectErr) { |
| 595 | v9fs_rlerror(req, &err); |
| 596 | g_assert_cmpint(err, ==, opt.expectErr); |
| 597 | } else { |
| 598 | v9fs_rsetattr(req); |
| 599 | } |
| 600 | req = NULL; /* request was freed */ |
| 601 | } |
| 602 | |
| 603 | return (TSetAttrRes) { .req = req }; |
| 604 | } |
| 605 | |
| 606 | /* size[4] Rsetattr tag[2] */ |
| 607 | void v9fs_rsetattr(P9Req *req) |
| 608 | { |
| 609 | v9fs_req_recv(req, P9_RSETATTR); |
| 610 | v9fs_req_free(req); |
| 611 | } |
| 612 | |
| 613 | /* size[4] Treaddir tag[2] fid[4] offset[8] count[4] */ |
| 614 | TReadDirRes v9fs_treaddir(TReadDirOpt opt) |
| 615 | { |
| 616 | P9Req *req; |
| 617 | uint32_t err; |
| 618 | |
| 619 | g_assert(opt.client); |
| 620 | /* expecting either Rreaddir or Rlerror, but obviously not both */ |
| 621 | g_assert(!opt.expectErr || !(opt.rreaddir.count || |
| 622 | opt.rreaddir.nentries || opt.rreaddir.entries)); |
| 623 | |
| 624 | req = v9fs_req_init(opt.client, 4 + 8 + 4, P9_TREADDIR, opt.tag); |
| 625 | v9fs_uint32_write(req, opt.fid); |
| 626 | v9fs_uint64_write(req, opt.offset); |
| 627 | v9fs_uint32_write(req, opt.count); |
| 628 | v9fs_req_send(req); |
| 629 | |
| 630 | if (!opt.requestOnly) { |
| 631 | v9fs_req_wait_for_reply(req, NULL); |
| 632 | if (opt.expectErr) { |
| 633 | v9fs_rlerror(req, &err); |
| 634 | g_assert_cmpint(err, ==, opt.expectErr); |
| 635 | } else { |
| 636 | v9fs_rreaddir(req, opt.rreaddir.count, opt.rreaddir.nentries, |
| 637 | opt.rreaddir.entries); |
| 638 | } |
| 639 | req = NULL; /* request was freed */ |
| 640 | } |
| 641 | |
| 642 | return (TReadDirRes) { .req = req }; |
| 643 | } |
| 644 | |
| 645 | /* size[4] Rreaddir tag[2] count[4] data[count] */ |
| 646 | void v9fs_rreaddir(P9Req *req, uint32_t *count, uint32_t *nentries, |
| 647 | struct V9fsDirent **entries) |
| 648 | { |
| 649 | uint32_t local_count; |
| 650 | struct V9fsDirent *e = NULL; |
| 651 | /* only used to avoid a leak if entries was NULL */ |
| 652 | struct V9fsDirent *unused_entries = NULL; |
| 653 | uint16_t slen; |
| 654 | uint32_t n = 0; |
| 655 | |
| 656 | v9fs_req_recv(req, P9_RREADDIR); |
| 657 | v9fs_uint32_read(req, &local_count); |
| 658 | |
| 659 | if (count) { |
| 660 | *count = local_count; |
| 661 | } |
| 662 | |
| 663 | for (int32_t togo = (int32_t)local_count; |
| 664 | togo >= 13 + 8 + 1 + 2; |
| 665 | togo -= 13 + 8 + 1 + 2 + slen, ++n) |
| 666 | { |
| 667 | if (!e) { |
| 668 | e = g_new(struct V9fsDirent, 1); |
| 669 | if (entries) { |
| 670 | *entries = e; |
| 671 | } else { |
| 672 | unused_entries = e; |
| 673 | } |
| 674 | } else { |
| 675 | e = e->next = g_new(struct V9fsDirent, 1); |
| 676 | } |
| 677 | e->next = NULL; |
| 678 | /* qid[13] offset[8] type[1] name[s] */ |
| 679 | v9fs_memread(req, &e->qid, 13); |
| 680 | v9fs_uint64_read(req, &e->offset); |
| 681 | v9fs_uint8_read(req, &e->type); |
| 682 | v9fs_string_read(req, &slen, &e->name); |
| 683 | } |
| 684 | |
| 685 | if (nentries) { |
| 686 | *nentries = n; |
| 687 | } |
| 688 | |
| 689 | v9fs_free_dirents(unused_entries); |
| 690 | v9fs_req_free(req); |
| 691 | } |
| 692 | |
| 693 | void v9fs_free_dirents(struct V9fsDirent *e) |
| 694 | { |
| 695 | struct V9fsDirent *next = NULL; |
| 696 | |
| 697 | for (; e; e = next) { |
| 698 | next = e->next; |
| 699 | g_free(e->name); |
| 700 | g_free(e); |
| 701 | } |
| 702 | } |
| 703 | |
| 704 | /* size[4] Tlopen tag[2] fid[4] flags[4] */ |
| 705 | TLOpenRes v9fs_tlopen(TLOpenOpt opt) |
| 706 | { |
| 707 | P9Req *req; |
| 708 | uint32_t err; |
| 709 | |
| 710 | g_assert(opt.client); |
| 711 | /* expecting either Rlopen or Rlerror, but obviously not both */ |
| 712 | g_assert(!opt.expectErr || !(opt.rlopen.qid || opt.rlopen.iounit)); |
| 713 | |
| 714 | req = v9fs_req_init(opt.client, 4 + 4, P9_TLOPEN, opt.tag); |
| 715 | v9fs_uint32_write(req, opt.fid); |
| 716 | v9fs_uint32_write(req, opt.flags); |
| 717 | v9fs_req_send(req); |
| 718 | |
| 719 | if (!opt.requestOnly) { |
| 720 | v9fs_req_wait_for_reply(req, NULL); |
| 721 | if (opt.expectErr) { |
| 722 | v9fs_rlerror(req, &err); |
| 723 | g_assert_cmpint(err, ==, opt.expectErr); |
| 724 | } else { |
| 725 | v9fs_rlopen(req, opt.rlopen.qid, opt.rlopen.iounit); |
| 726 | } |
| 727 | req = NULL; /* request was freed */ |
| 728 | } |
| 729 | |
| 730 | return (TLOpenRes) { .req = req }; |
| 731 | } |
| 732 | |
| 733 | /* size[4] Rlopen tag[2] qid[13] iounit[4] */ |
| 734 | void v9fs_rlopen(P9Req *req, v9fs_qid *qid, uint32_t *iounit) |
| 735 | { |
| 736 | v9fs_req_recv(req, P9_RLOPEN); |
| 737 | if (qid) { |
| 738 | v9fs_memread(req, qid, 13); |
| 739 | } else { |
| 740 | v9fs_memskip(req, 13); |
| 741 | } |
| 742 | if (iounit) { |
| 743 | v9fs_uint32_read(req, iounit); |
| 744 | } |
| 745 | v9fs_req_free(req); |
| 746 | } |
| 747 | |
| 748 | /* size[4] Twrite tag[2] fid[4] offset[8] count[4] data[count] */ |
| 749 | TWriteRes v9fs_twrite(TWriteOpt opt) |
| 750 | { |
| 751 | P9Req *req; |
| 752 | uint32_t err; |
| 753 | uint32_t body_size = 4 + 8 + 4; |
| 754 | uint32_t written = 0; |
| 755 | |
| 756 | g_assert(opt.client); |
| 757 | |
| 758 | g_assert_cmpint(body_size, <=, UINT32_MAX - opt.count); |
| 759 | body_size += opt.count; |
| 760 | req = v9fs_req_init(opt.client, body_size, P9_TWRITE, opt.tag); |
| 761 | v9fs_uint32_write(req, opt.fid); |
| 762 | v9fs_uint64_write(req, opt.offset); |
| 763 | v9fs_uint32_write(req, opt.count); |
| 764 | v9fs_memwrite(req, opt.data, opt.count); |
| 765 | v9fs_req_send(req); |
| 766 | |
| 767 | if (!opt.requestOnly) { |
| 768 | v9fs_req_wait_for_reply(req, NULL); |
| 769 | if (opt.expectErr) { |
| 770 | v9fs_rlerror(req, &err); |
| 771 | g_assert_cmpint(err, ==, opt.expectErr); |
| 772 | } else { |
| 773 | v9fs_rwrite(req, &written); |
| 774 | } |
| 775 | req = NULL; /* request was freed */ |
| 776 | } |
| 777 | |
| 778 | return (TWriteRes) { |
| 779 | .req = req, |
| 780 | .count = written |
| 781 | }; |
| 782 | } |
| 783 | |
| 784 | /* size[4] Rwrite tag[2] count[4] */ |
| 785 | void v9fs_rwrite(P9Req *req, uint32_t *count) |
| 786 | { |
| 787 | v9fs_req_recv(req, P9_RWRITE); |
| 788 | if (count) { |
| 789 | v9fs_uint32_read(req, count); |
| 790 | } |
| 791 | v9fs_req_free(req); |
| 792 | } |
| 793 | |
| 794 | /* size[4] Tflush tag[2] oldtag[2] */ |
| 795 | TFlushRes v9fs_tflush(TFlushOpt opt) |
| 796 | { |
| 797 | P9Req *req; |
| 798 | uint32_t err; |
| 799 | |
| 800 | g_assert(opt.client); |
| 801 | |
| 802 | req = v9fs_req_init(opt.client, 2, P9_TFLUSH, opt.tag); |
| 803 | v9fs_uint32_write(req, opt.oldtag); |
| 804 | v9fs_req_send(req); |
| 805 | |
| 806 | if (!opt.requestOnly) { |
| 807 | v9fs_req_wait_for_reply(req, NULL); |
| 808 | if (opt.expectErr) { |
| 809 | v9fs_rlerror(req, &err); |
| 810 | g_assert_cmpint(err, ==, opt.expectErr); |
| 811 | } else { |
| 812 | v9fs_rflush(req); |
| 813 | } |
| 814 | req = NULL; /* request was freed */ |
| 815 | } |
| 816 | |
| 817 | return (TFlushRes) { .req = req }; |
| 818 | } |
| 819 | |
| 820 | /* size[4] Rflush tag[2] */ |
| 821 | void v9fs_rflush(P9Req *req) |
| 822 | { |
| 823 | v9fs_req_recv(req, P9_RFLUSH); |
| 824 | v9fs_req_free(req); |
| 825 | } |
| 826 | |
| 827 | /* size[4] Tmkdir tag[2] dfid[4] name[s] mode[4] gid[4] */ |
| 828 | TMkdirRes v9fs_tmkdir(TMkdirOpt opt) |
| 829 | { |
| 830 | P9Req *req; |
| 831 | uint32_t err; |
| 832 | |
| 833 | g_assert(opt.client); |
| 834 | /* expecting either hi-level atPath or low-level dfid, but not both */ |
| 835 | g_assert(!opt.atPath || !opt.dfid); |
| 836 | /* expecting either Rmkdir or Rlerror, but obviously not both */ |
| 837 | g_assert(!opt.expectErr || !opt.rmkdir.qid); |
| 838 | |
| 839 | if (opt.atPath) { |
| 840 | opt.dfid = v9fs_twalk((TWalkOpt) { .client = opt.client, |
| 841 | .path = opt.atPath }).newfid; |
| 842 | } |
| 843 | |
| 844 | if (!opt.mode) { |
| 845 | opt.mode = 0750; |
| 846 | } |
| 847 | |
| 848 | uint32_t body_size = 4 + 4 + 4; |
| 849 | uint16_t string_size = v9fs_string_size(opt.name); |
| 850 | |
| 851 | g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); |
| 852 | body_size += string_size; |
| 853 | |
| 854 | req = v9fs_req_init(opt.client, body_size, P9_TMKDIR, opt.tag); |
| 855 | v9fs_uint32_write(req, opt.dfid); |
| 856 | v9fs_string_write(req, opt.name); |
| 857 | v9fs_uint32_write(req, opt.mode); |
| 858 | v9fs_uint32_write(req, opt.gid); |
| 859 | v9fs_req_send(req); |
| 860 | |
| 861 | if (!opt.requestOnly) { |
| 862 | v9fs_req_wait_for_reply(req, NULL); |
| 863 | if (opt.expectErr) { |
| 864 | v9fs_rlerror(req, &err); |
| 865 | g_assert_cmpint(err, ==, opt.expectErr); |
| 866 | } else { |
| 867 | v9fs_rmkdir(req, opt.rmkdir.qid); |
| 868 | } |
| 869 | req = NULL; /* request was freed */ |
| 870 | } |
| 871 | |
| 872 | return (TMkdirRes) { .req = req }; |
| 873 | } |
| 874 | |
| 875 | /* size[4] Rmkdir tag[2] qid[13] */ |
| 876 | void v9fs_rmkdir(P9Req *req, v9fs_qid *qid) |
| 877 | { |
| 878 | v9fs_req_recv(req, P9_RMKDIR); |
| 879 | if (qid) { |
| 880 | v9fs_memread(req, qid, 13); |
| 881 | } else { |
| 882 | v9fs_memskip(req, 13); |
| 883 | } |
| 884 | v9fs_req_free(req); |
| 885 | } |
| 886 | |
| 887 | /* size[4] Tlcreate tag[2] fid[4] name[s] flags[4] mode[4] gid[4] */ |
| 888 | TlcreateRes v9fs_tlcreate(TlcreateOpt opt) |
| 889 | { |
| 890 | P9Req *req; |
| 891 | uint32_t err; |
| 892 | |
| 893 | g_assert(opt.client); |
| 894 | /* expecting either hi-level atPath or low-level fid, but not both */ |
| 895 | g_assert(!opt.atPath || !opt.fid); |
| 896 | /* expecting either Rlcreate or Rlerror, but obviously not both */ |
| 897 | g_assert(!opt.expectErr || !(opt.rlcreate.qid || opt.rlcreate.iounit)); |
| 898 | |
| 899 | if (opt.atPath) { |
| 900 | opt.fid = v9fs_twalk((TWalkOpt) { .client = opt.client, |
| 901 | .path = opt.atPath }).newfid; |
| 902 | } |
| 903 | |
| 904 | if (!opt.mode) { |
| 905 | opt.mode = 0750; |
| 906 | } |
| 907 | |
| 908 | uint32_t body_size = 4 + 4 + 4 + 4; |
| 909 | uint16_t string_size = v9fs_string_size(opt.name); |
| 910 | |
| 911 | g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); |
| 912 | body_size += string_size; |
| 913 | |
| 914 | req = v9fs_req_init(opt.client, body_size, P9_TLCREATE, opt.tag); |
| 915 | v9fs_uint32_write(req, opt.fid); |
| 916 | v9fs_string_write(req, opt.name); |
| 917 | v9fs_uint32_write(req, opt.flags); |
| 918 | v9fs_uint32_write(req, opt.mode); |
| 919 | v9fs_uint32_write(req, opt.gid); |
| 920 | v9fs_req_send(req); |
| 921 | |
| 922 | if (!opt.requestOnly) { |
| 923 | v9fs_req_wait_for_reply(req, NULL); |
| 924 | if (opt.expectErr) { |
| 925 | v9fs_rlerror(req, &err); |
| 926 | g_assert_cmpint(err, ==, opt.expectErr); |
| 927 | } else { |
| 928 | v9fs_rlcreate(req, opt.rlcreate.qid, opt.rlcreate.iounit); |
| 929 | } |
| 930 | req = NULL; /* request was freed */ |
| 931 | } |
| 932 | |
| 933 | return (TlcreateRes) { .req = req }; |
| 934 | } |
| 935 | |
| 936 | /* size[4] Rlcreate tag[2] qid[13] iounit[4] */ |
| 937 | void v9fs_rlcreate(P9Req *req, v9fs_qid *qid, uint32_t *iounit) |
| 938 | { |
| 939 | v9fs_req_recv(req, P9_RLCREATE); |
| 940 | if (qid) { |
| 941 | v9fs_memread(req, qid, 13); |
| 942 | } else { |
| 943 | v9fs_memskip(req, 13); |
| 944 | } |
| 945 | if (iounit) { |
| 946 | v9fs_uint32_read(req, iounit); |
| 947 | } |
| 948 | v9fs_req_free(req); |
| 949 | } |
| 950 | |
| 951 | /* size[4] Tsymlink tag[2] fid[4] name[s] symtgt[s] gid[4] */ |
| 952 | TsymlinkRes v9fs_tsymlink(TsymlinkOpt opt) |
| 953 | { |
| 954 | P9Req *req; |
| 955 | uint32_t err; |
| 956 | |
| 957 | g_assert(opt.client); |
| 958 | /* expecting either hi-level atPath or low-level fid, but not both */ |
| 959 | g_assert(!opt.atPath || !opt.fid); |
| 960 | /* expecting either Rsymlink or Rlerror, but obviously not both */ |
| 961 | g_assert(!opt.expectErr || !opt.rsymlink.qid); |
| 962 | |
| 963 | if (opt.atPath) { |
| 964 | opt.fid = v9fs_twalk((TWalkOpt) { .client = opt.client, |
| 965 | .path = opt.atPath }).newfid; |
| 966 | } |
| 967 | |
| 968 | uint32_t body_size = 4 + 4; |
| 969 | uint16_t string_size = v9fs_string_size(opt.name) + |
| 970 | v9fs_string_size(opt.symtgt); |
| 971 | |
| 972 | g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); |
| 973 | body_size += string_size; |
| 974 | |
| 975 | req = v9fs_req_init(opt.client, body_size, P9_TSYMLINK, opt.tag); |
| 976 | v9fs_uint32_write(req, opt.fid); |
| 977 | v9fs_string_write(req, opt.name); |
| 978 | v9fs_string_write(req, opt.symtgt); |
| 979 | v9fs_uint32_write(req, opt.gid); |
| 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_rsymlink(req, opt.rsymlink.qid); |
| 989 | } |
| 990 | req = NULL; /* request was freed */ |
| 991 | } |
| 992 | |
| 993 | return (TsymlinkRes) { .req = req }; |
| 994 | } |
| 995 | |
| 996 | /* size[4] Rsymlink tag[2] qid[13] */ |
| 997 | void v9fs_rsymlink(P9Req *req, v9fs_qid *qid) |
| 998 | { |
| 999 | v9fs_req_recv(req, P9_RSYMLINK); |
| 1000 | if (qid) { |
| 1001 | v9fs_memread(req, qid, 13); |
| 1002 | } else { |
| 1003 | v9fs_memskip(req, 13); |
| 1004 | } |
| 1005 | v9fs_req_free(req); |
| 1006 | } |
| 1007 | |
| 1008 | /* size[4] Tlink tag[2] dfid[4] fid[4] name[s] */ |
| 1009 | TlinkRes v9fs_tlink(TlinkOpt opt) |
| 1010 | { |
| 1011 | P9Req *req; |
| 1012 | uint32_t err; |
| 1013 | |
| 1014 | g_assert(opt.client); |
| 1015 | /* expecting either hi-level atPath or low-level dfid, but not both */ |
| 1016 | g_assert(!opt.atPath || !opt.dfid); |
| 1017 | /* expecting either hi-level toPath or low-level fid, but not both */ |
| 1018 | g_assert(!opt.toPath || !opt.fid); |
| 1019 | |
| 1020 | if (opt.atPath) { |
| 1021 | opt.dfid = v9fs_twalk((TWalkOpt) { .client = opt.client, |
| 1022 | .path = opt.atPath }).newfid; |
| 1023 | } |
| 1024 | if (opt.toPath) { |
| 1025 | opt.fid = v9fs_twalk((TWalkOpt) { .client = opt.client, |
| 1026 | .path = opt.toPath }).newfid; |
| 1027 | } |
| 1028 | |
| 1029 | uint32_t body_size = 4 + 4; |
| 1030 | uint16_t string_size = v9fs_string_size(opt.name); |
| 1031 | |
| 1032 | g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); |
| 1033 | body_size += string_size; |
| 1034 | |
| 1035 | req = v9fs_req_init(opt.client, body_size, P9_TLINK, opt.tag); |
| 1036 | v9fs_uint32_write(req, opt.dfid); |
| 1037 | v9fs_uint32_write(req, opt.fid); |
| 1038 | v9fs_string_write(req, opt.name); |
| 1039 | v9fs_req_send(req); |
| 1040 | |
| 1041 | if (!opt.requestOnly) { |
| 1042 | v9fs_req_wait_for_reply(req, NULL); |
| 1043 | if (opt.expectErr) { |
| 1044 | v9fs_rlerror(req, &err); |
| 1045 | g_assert_cmpint(err, ==, opt.expectErr); |
| 1046 | } else { |
| 1047 | v9fs_rlink(req); |
| 1048 | } |
| 1049 | req = NULL; /* request was freed */ |
| 1050 | } |
| 1051 | |
| 1052 | return (TlinkRes) { .req = req }; |
| 1053 | } |
| 1054 | |
| 1055 | /* size[4] Rlink tag[2] */ |
| 1056 | void v9fs_rlink(P9Req *req) |
| 1057 | { |
| 1058 | v9fs_req_recv(req, P9_RLINK); |
| 1059 | v9fs_req_free(req); |
| 1060 | } |
| 1061 | |
| 1062 | /* size[4] Tunlinkat tag[2] dirfd[4] name[s] flags[4] */ |
| 1063 | TunlinkatRes v9fs_tunlinkat(TunlinkatOpt opt) |
| 1064 | { |
| 1065 | P9Req *req; |
| 1066 | uint32_t err; |
| 1067 | |
| 1068 | g_assert(opt.client); |
| 1069 | /* expecting either hi-level atPath or low-level dirfd, but not both */ |
| 1070 | g_assert(!opt.atPath || !opt.dirfd); |
| 1071 | |
| 1072 | if (opt.atPath) { |
| 1073 | opt.dirfd = v9fs_twalk((TWalkOpt) { .client = opt.client, |
| 1074 | .path = opt.atPath }).newfid; |
| 1075 | } |
| 1076 | |
| 1077 | uint32_t body_size = 4 + 4; |
| 1078 | uint16_t string_size = v9fs_string_size(opt.name); |
| 1079 | |
| 1080 | g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); |
| 1081 | body_size += string_size; |
| 1082 | |
| 1083 | req = v9fs_req_init(opt.client, body_size, P9_TUNLINKAT, opt.tag); |
| 1084 | v9fs_uint32_write(req, opt.dirfd); |
| 1085 | v9fs_string_write(req, opt.name); |
| 1086 | v9fs_uint32_write(req, opt.flags); |
| 1087 | v9fs_req_send(req); |
| 1088 | |
| 1089 | if (!opt.requestOnly) { |
| 1090 | v9fs_req_wait_for_reply(req, NULL); |
| 1091 | if (opt.expectErr) { |
| 1092 | v9fs_rlerror(req, &err); |
| 1093 | g_assert_cmpint(err, ==, opt.expectErr); |
| 1094 | } else { |
| 1095 | v9fs_runlinkat(req); |
| 1096 | } |
| 1097 | req = NULL; /* request was freed */ |
| 1098 | } |
| 1099 | |
| 1100 | return (TunlinkatRes) { .req = req }; |
| 1101 | } |
| 1102 | |
| 1103 | /* size[4] Runlinkat tag[2] */ |
| 1104 | void v9fs_runlinkat(P9Req *req) |
| 1105 | { |
| 1106 | v9fs_req_recv(req, P9_RUNLINKAT); |
| 1107 | v9fs_req_free(req); |
| 1108 | } |
| 1109 | |
| 1110 | /* size[4] Tread tag[2] fid[4] offset[8] count[4] */ |
| 1111 | TReadRes v9fs_tread(TReadOpt opt) |
| 1112 | { |
| 1113 | P9Req *req; |
| 1114 | uint32_t err; |
| 1115 | |
| 1116 | g_assert(opt.client); |
| 1117 | |
| 1118 | uint32_t body_size = 4 + 8 + 4; |
| 1119 | |
| 1120 | req = v9fs_req_init(opt.client, body_size, P9_TREAD, opt.tag); |
| 1121 | v9fs_uint32_write(req, opt.fid); |
| 1122 | v9fs_uint64_write(req, opt.offset); |
| 1123 | v9fs_uint32_write(req, opt.count); |
| 1124 | v9fs_req_send(req); |
| 1125 | |
| 1126 | if (!opt.requestOnly) { |
| 1127 | v9fs_req_wait_for_reply(req, NULL); |
| 1128 | if (opt.expectErr) { |
| 1129 | v9fs_rlerror(req, &err); |
| 1130 | g_assert_cmpint(err, ==, opt.expectErr); |
| 1131 | } else { |
| 1132 | v9fs_rread(req, opt.rread.count, opt.rread.data); |
| 1133 | } |
| 1134 | req = NULL; /* request was freed */ |
| 1135 | } |
| 1136 | |
| 1137 | return (TReadRes) { |
| 1138 | .req = req, |
| 1139 | .count = opt.rread.count ? *opt.rread.count : 0 |
| 1140 | }; |
| 1141 | } |
| 1142 | |
| 1143 | /* size[4] Rread tag[2] count[4] data[count] */ |
| 1144 | void v9fs_rread(P9Req *req, uint32_t *count, void *data) |
| 1145 | { |
| 1146 | v9fs_req_recv(req, P9_RREAD); |
| 1147 | v9fs_uint32_read(req, count); |
| 1148 | if (data && *count > 0) { |
| 1149 | v9fs_memread(req, data, *count); |
| 1150 | } |
| 1151 | v9fs_req_free(req); |
| 1152 | } |
| 1153 | |
| 1154 | /* size[4] Tclunk tag[2] fid[4] */ |
| 1155 | TClunkRes v9fs_tclunk(TClunkOpt opt) |
| 1156 | { |
| 1157 | P9Req *req; |
| 1158 | uint32_t err; |
| 1159 | |
| 1160 | g_assert(opt.client); |
| 1161 | |
| 1162 | req = v9fs_req_init(opt.client, 4, P9_TCLUNK, opt.tag); |
| 1163 | v9fs_uint32_write(req, opt.fid); |
| 1164 | v9fs_req_send(req); |
| 1165 | |
| 1166 | if (!opt.requestOnly) { |
| 1167 | v9fs_req_wait_for_reply(req, NULL); |
| 1168 | if (opt.expectErr) { |
| 1169 | v9fs_rlerror(req, &err); |
| 1170 | g_assert_cmpint(err, ==, opt.expectErr); |
| 1171 | } else { |
| 1172 | v9fs_rclunk(req); |
| 1173 | } |
| 1174 | req = NULL; /* request was freed */ |
| 1175 | } |
| 1176 | |
| 1177 | return (TClunkRes) { .req = req }; |
| 1178 | } |
| 1179 | |
| 1180 | /* size[4] Rclunk tag[2] */ |
| 1181 | void v9fs_rclunk(P9Req *req) |
| 1182 | { |
| 1183 | v9fs_req_recv(req, P9_RCLUNK); |
| 1184 | v9fs_req_free(req); |
| 1185 | } |
| 1186 | |
| 1187 | /* size[4] Txattrcreate tag[2] fid[4] name[s] attr_size[8] flags[4] */ |
| 1188 | TXattrCreateRes v9fs_txattrcreate(TXattrCreateOpt opt) |
| 1189 | { |
| 1190 | P9Req *req; |
| 1191 | uint32_t err; |
| 1192 | |
| 1193 | g_assert(opt.client); |
| 1194 | g_assert(opt.name); |
| 1195 | |
| 1196 | uint32_t body_size = 4 + 8 + 4; |
| 1197 | uint16_t string_size = v9fs_string_size(opt.name); |
| 1198 | |
| 1199 | g_assert_cmpint(body_size, <=, UINT32_MAX - string_size); |
| 1200 | body_size += string_size; |
| 1201 | |
| 1202 | req = v9fs_req_init(opt.client, body_size, P9_TXATTRCREATE, opt.tag); |
| 1203 | v9fs_uint32_write(req, opt.fid); |
| 1204 | v9fs_string_write(req, opt.name); |
| 1205 | v9fs_uint64_write(req, opt.size); |
| 1206 | v9fs_uint32_write(req, opt.flags); |
| 1207 | v9fs_req_send(req); |
| 1208 | |
| 1209 | err = 0; |
| 1210 | if (!opt.requestOnly) { |
| 1211 | v9fs_req_wait_for_reply(req, NULL); |
| 1212 | if (opt.expectErr) { |
| 1213 | v9fs_rlerror(req, &err); |
| 1214 | g_assert_cmpint(err, ==, opt.expectErr); |
| 1215 | } else { |
| 1216 | v9fs_rxattrcreate(req); |
| 1217 | } |
| 1218 | req = NULL; /* request was freed */ |
| 1219 | } |
| 1220 | |
| 1221 | return (TXattrCreateRes) { .req = req, .err = err }; |
| 1222 | } |
| 1223 | |
| 1224 | /* size[4] Rxattrcreate tag[2] */ |
| 1225 | void v9fs_rxattrcreate(P9Req *req) |
| 1226 | { |
| 1227 | v9fs_req_recv(req, P9_RXATTRCREATE); |
| 1228 | v9fs_req_free(req); |
| 1229 | } |