1 2 #include <linux/ceph/ceph_debug.h> 3 #include <linux/backing-dev.h> 4 #include <linux/ctype.h> 5 #include <linux/fs.h> 6 #include <linux/inet.h> 7 #include <linux/in6.h> 8 #include <linux/key.h> 9 #include <keys/ceph-type.h> 10 #include <linux/module.h> 11 #include <linux/mount.h> 12 #include <linux/nsproxy.h> 13 #include <linux/parser.h> 14 #include <linux/sched.h> 15 #include <linux/seq_file.h> 16 #include <linux/slab.h> 17 #include <linux/statfs.h> 18 #include <linux/string.h> 19 #include <linux/vmalloc.h> 20 21 22 #include <linux/ceph/ceph_features.h> 23 #include <linux/ceph/libceph.h> 24 #include <linux/ceph/debugfs.h> 25 #include <linux/ceph/decode.h> 26 #include <linux/ceph/mon_client.h> 27 #include <linux/ceph/auth.h> 28 #include "crypto.h" 29 30 31 /* 32 * Module compatibility interface. For now it doesn't do anything, 33 * but its existence signals a certain level of functionality. 34 * 35 * The data buffer is used to pass information both to and from 36 * libceph. The return value indicates whether libceph determines 37 * it is compatible with the caller (from another kernel module), 38 * given the provided data. 39 * 40 * The data pointer can be null. 41 */ 42 bool libceph_compatible(void *data) 43 { 44 return true; 45 } 46 EXPORT_SYMBOL(libceph_compatible); 47 48 static int param_get_supported_features(char *buffer, 49 const struct kernel_param *kp) 50 { 51 return sprintf(buffer, "0x%llx", CEPH_FEATURES_SUPPORTED_DEFAULT); 52 } 53 static const struct kernel_param_ops param_ops_supported_features = { 54 .get = param_get_supported_features, 55 }; 56 module_param_cb(supported_features, ¶m_ops_supported_features, NULL, 57 S_IRUGO); 58 59 const char *ceph_msg_type_name(int type) 60 { 61 switch (type) { 62 case CEPH_MSG_SHUTDOWN: return "shutdown"; 63 case CEPH_MSG_PING: return "ping"; 64 case CEPH_MSG_AUTH: return "auth"; 65 case CEPH_MSG_AUTH_REPLY: return "auth_reply"; 66 case CEPH_MSG_MON_MAP: return "mon_map"; 67 case CEPH_MSG_MON_GET_MAP: return "mon_get_map"; 68 case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe"; 69 case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack"; 70 case CEPH_MSG_STATFS: return "statfs"; 71 case CEPH_MSG_STATFS_REPLY: return "statfs_reply"; 72 case CEPH_MSG_MON_GET_VERSION: return "mon_get_version"; 73 case CEPH_MSG_MON_GET_VERSION_REPLY: return "mon_get_version_reply"; 74 case CEPH_MSG_MDS_MAP: return "mds_map"; 75 case CEPH_MSG_CLIENT_SESSION: return "client_session"; 76 case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect"; 77 case CEPH_MSG_CLIENT_REQUEST: return "client_request"; 78 case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward"; 79 case CEPH_MSG_CLIENT_REPLY: return "client_reply"; 80 case CEPH_MSG_CLIENT_CAPS: return "client_caps"; 81 case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release"; 82 case CEPH_MSG_CLIENT_SNAP: return "client_snap"; 83 case CEPH_MSG_CLIENT_LEASE: return "client_lease"; 84 case CEPH_MSG_OSD_MAP: return "osd_map"; 85 case CEPH_MSG_OSD_OP: return "osd_op"; 86 case CEPH_MSG_OSD_OPREPLY: return "osd_opreply"; 87 case CEPH_MSG_WATCH_NOTIFY: return "watch_notify"; 88 case CEPH_MSG_OSD_BACKOFF: return "osd_backoff"; 89 default: return "unknown"; 90 } 91 } 92 EXPORT_SYMBOL(ceph_msg_type_name); 93 94 /* 95 * Initially learn our fsid, or verify an fsid matches. 96 */ 97 int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid) 98 { 99 if (client->have_fsid) { 100 if (ceph_fsid_compare(&client->fsid, fsid)) { 101 pr_err("bad fsid, had %pU got %pU", 102 &client->fsid, fsid); 103 return -1; 104 } 105 } else { 106 memcpy(&client->fsid, fsid, sizeof(*fsid)); 107 } 108 return 0; 109 } 110 EXPORT_SYMBOL(ceph_check_fsid); 111 112 static int strcmp_null(const char *s1, const char *s2) 113 { 114 if (!s1 && !s2) 115 return 0; 116 if (s1 && !s2) 117 return -1; 118 if (!s1 && s2) 119 return 1; 120 return strcmp(s1, s2); 121 } 122 123 int ceph_compare_options(struct ceph_options *new_opt, 124 struct ceph_client *client) 125 { 126 struct ceph_options *opt1 = new_opt; 127 struct ceph_options *opt2 = client->options; 128 int ofs = offsetof(struct ceph_options, mon_addr); 129 int i; 130 int ret; 131 132 /* 133 * Don't bother comparing options if network namespaces don't 134 * match. 135 */ 136 if (!net_eq(current->nsproxy->net_ns, read_pnet(&client->msgr.net))) 137 return -1; 138 139 ret = memcmp(opt1, opt2, ofs); 140 if (ret) 141 return ret; 142 143 ret = strcmp_null(opt1->name, opt2->name); 144 if (ret) 145 return ret; 146 147 if (opt1->key && !opt2->key) 148 return -1; 149 if (!opt1->key && opt2->key) 150 return 1; 151 if (opt1->key && opt2->key) { 152 if (opt1->key->type != opt2->key->type) 153 return -1; 154 if (opt1->key->created.tv_sec != opt2->key->created.tv_sec) 155 return -1; 156 if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec) 157 return -1; 158 if (opt1->key->len != opt2->key->len) 159 return -1; 160 if (opt1->key->key && !opt2->key->key) 161 return -1; 162 if (!opt1->key->key && opt2->key->key) 163 return 1; 164 if (opt1->key->key && opt2->key->key) { 165 ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len); 166 if (ret) 167 return ret; 168 } 169 } 170 171 /* any matching mon ip implies a match */ 172 for (i = 0; i < opt1->num_mon; i++) { 173 if (ceph_monmap_contains(client->monc.monmap, 174 &opt1->mon_addr[i])) 175 return 0; 176 } 177 return -1; 178 } 179 EXPORT_SYMBOL(ceph_compare_options); 180 181 void *ceph_kvmalloc(size_t size, gfp_t flags) 182 { 183 if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) { 184 void *ptr = kmalloc(size, flags | __GFP_NOWARN); 185 if (ptr) 186 return ptr; 187 } 188 189 return __vmalloc(size, flags, PAGE_KERNEL); 190 } 191 192 193 static int parse_fsid(const char *str, struct ceph_fsid *fsid) 194 { 195 int i = 0; 196 char tmp[3]; 197 int err = -EINVAL; 198 int d; 199 200 dout("parse_fsid '%s'\n", str); 201 tmp[2] = 0; 202 while (*str && i < 16) { 203 if (ispunct(*str)) { 204 str++; 205 continue; 206 } 207 if (!isxdigit(str[0]) || !isxdigit(str[1])) 208 break; 209 tmp[0] = str[0]; 210 tmp[1] = str[1]; 211 if (sscanf(tmp, "%x", &d) < 1) 212 break; 213 fsid->fsid[i] = d & 0xff; 214 i++; 215 str += 2; 216 } 217 218 if (i == 16) 219 err = 0; 220 dout("parse_fsid ret %d got fsid %pU", err, fsid); 221 return err; 222 } 223 224 /* 225 * ceph options 226 */ 227 enum { 228 Opt_osdtimeout, 229 Opt_osdkeepalivetimeout, 230 Opt_mount_timeout, 231 Opt_osd_idle_ttl, 232 Opt_osd_request_timeout, 233 Opt_last_int, 234 /* int args above */ 235 Opt_fsid, 236 Opt_name, 237 Opt_secret, 238 Opt_key, 239 Opt_ip, 240 Opt_last_string, 241 /* string args above */ 242 Opt_share, 243 Opt_noshare, 244 Opt_crc, 245 Opt_nocrc, 246 Opt_cephx_require_signatures, 247 Opt_nocephx_require_signatures, 248 Opt_cephx_sign_messages, 249 Opt_nocephx_sign_messages, 250 Opt_tcp_nodelay, 251 Opt_notcp_nodelay, 252 }; 253 254 static match_table_t opt_tokens = { 255 {Opt_osdtimeout, "osdtimeout=%d"}, 256 {Opt_osdkeepalivetimeout, "osdkeepalive=%d"}, 257 {Opt_mount_timeout, "mount_timeout=%d"}, 258 {Opt_osd_idle_ttl, "osd_idle_ttl=%d"}, 259 {Opt_osd_request_timeout, "osd_request_timeout=%d"}, 260 /* int args above */ 261 {Opt_fsid, "fsid=%s"}, 262 {Opt_name, "name=%s"}, 263 {Opt_secret, "secret=%s"}, 264 {Opt_key, "key=%s"}, 265 {Opt_ip, "ip=%s"}, 266 /* string args above */ 267 {Opt_share, "share"}, 268 {Opt_noshare, "noshare"}, 269 {Opt_crc, "crc"}, 270 {Opt_nocrc, "nocrc"}, 271 {Opt_cephx_require_signatures, "cephx_require_signatures"}, 272 {Opt_nocephx_require_signatures, "nocephx_require_signatures"}, 273 {Opt_cephx_sign_messages, "cephx_sign_messages"}, 274 {Opt_nocephx_sign_messages, "nocephx_sign_messages"}, 275 {Opt_tcp_nodelay, "tcp_nodelay"}, 276 {Opt_notcp_nodelay, "notcp_nodelay"}, 277 {-1, NULL} 278 }; 279 280 void ceph_destroy_options(struct ceph_options *opt) 281 { 282 dout("destroy_options %p\n", opt); 283 kfree(opt->name); 284 if (opt->key) { 285 ceph_crypto_key_destroy(opt->key); 286 kfree(opt->key); 287 } 288 kfree(opt->mon_addr); 289 kfree(opt); 290 } 291 EXPORT_SYMBOL(ceph_destroy_options); 292 293 /* get secret from key store */ 294 static int get_secret(struct ceph_crypto_key *dst, const char *name) { 295 struct key *ukey; 296 int key_err; 297 int err = 0; 298 struct ceph_crypto_key *ckey; 299 300 ukey = request_key(&key_type_ceph, name, NULL); 301 if (!ukey || IS_ERR(ukey)) { 302 /* request_key errors don't map nicely to mount(2) 303 errors; don't even try, but still printk */ 304 key_err = PTR_ERR(ukey); 305 switch (key_err) { 306 case -ENOKEY: 307 pr_warn("ceph: Mount failed due to key not found: %s\n", 308 name); 309 break; 310 case -EKEYEXPIRED: 311 pr_warn("ceph: Mount failed due to expired key: %s\n", 312 name); 313 break; 314 case -EKEYREVOKED: 315 pr_warn("ceph: Mount failed due to revoked key: %s\n", 316 name); 317 break; 318 default: 319 pr_warn("ceph: Mount failed due to unknown key error %d: %s\n", 320 key_err, name); 321 } 322 err = -EPERM; 323 goto out; 324 } 325 326 ckey = ukey->payload.data[0]; 327 err = ceph_crypto_key_clone(dst, ckey); 328 if (err) 329 goto out_key; 330 /* pass through, err is 0 */ 331 332 out_key: 333 key_put(ukey); 334 out: 335 return err; 336 } 337 338 struct ceph_options * 339 ceph_parse_options(char *options, const char *dev_name, 340 const char *dev_name_end, 341 int (*parse_extra_token)(char *c, void *private), 342 void *private) 343 { 344 struct ceph_options *opt; 345 const char *c; 346 int err = -ENOMEM; 347 substring_t argstr[MAX_OPT_ARGS]; 348 349 opt = kzalloc(sizeof(*opt), GFP_KERNEL); 350 if (!opt) 351 return ERR_PTR(-ENOMEM); 352 opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr), 353 GFP_KERNEL); 354 if (!opt->mon_addr) 355 goto out; 356 357 dout("parse_options %p options '%s' dev_name '%s'\n", opt, options, 358 dev_name); 359 360 /* start with defaults */ 361 opt->flags = CEPH_OPT_DEFAULT; 362 opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT; 363 opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; 364 opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; 365 opt->osd_request_timeout = CEPH_OSD_REQUEST_TIMEOUT_DEFAULT; 366 367 /* get mon ip(s) */ 368 /* ip1[:port1][,ip2[:port2]...] */ 369 err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr, 370 CEPH_MAX_MON, &opt->num_mon); 371 if (err < 0) 372 goto out; 373 374 /* parse mount options */ 375 while ((c = strsep(&options, ",")) != NULL) { 376 int token, intval, ret; 377 if (!*c) 378 continue; 379 err = -EINVAL; 380 token = match_token((char *)c, opt_tokens, argstr); 381 if (token < 0 && parse_extra_token) { 382 /* extra? */ 383 err = parse_extra_token((char *)c, private); 384 if (err < 0) { 385 pr_err("bad option at '%s'\n", c); 386 goto out; 387 } 388 continue; 389 } 390 if (token < Opt_last_int) { 391 ret = match_int(&argstr[0], &intval); 392 if (ret < 0) { 393 pr_err("bad mount option arg (not int) " 394 "at '%s'\n", c); 395 continue; 396 } 397 dout("got int token %d val %d\n", token, intval); 398 } else if (token > Opt_last_int && token < Opt_last_string) { 399 dout("got string token %d val %s\n", token, 400 argstr[0].from); 401 } else { 402 dout("got token %d\n", token); 403 } 404 switch (token) { 405 case Opt_ip: 406 err = ceph_parse_ips(argstr[0].from, 407 argstr[0].to, 408 &opt->my_addr, 409 1, NULL); 410 if (err < 0) 411 goto out; 412 opt->flags |= CEPH_OPT_MYIP; 413 break; 414 415 case Opt_fsid: 416 err = parse_fsid(argstr[0].from, &opt->fsid); 417 if (err == 0) 418 opt->flags |= CEPH_OPT_FSID; 419 break; 420 case Opt_name: 421 kfree(opt->name); 422 opt->name = kstrndup(argstr[0].from, 423 argstr[0].to-argstr[0].from, 424 GFP_KERNEL); 425 if (!opt->name) { 426 err = -ENOMEM; 427 goto out; 428 } 429 break; 430 case Opt_secret: 431 ceph_crypto_key_destroy(opt->key); 432 kfree(opt->key); 433 434 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); 435 if (!opt->key) { 436 err = -ENOMEM; 437 goto out; 438 } 439 err = ceph_crypto_key_unarmor(opt->key, argstr[0].from); 440 if (err < 0) 441 goto out; 442 break; 443 case Opt_key: 444 ceph_crypto_key_destroy(opt->key); 445 kfree(opt->key); 446 447 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); 448 if (!opt->key) { 449 err = -ENOMEM; 450 goto out; 451 } 452 err = get_secret(opt->key, argstr[0].from); 453 if (err < 0) 454 goto out; 455 break; 456 457 /* misc */ 458 case Opt_osdtimeout: 459 pr_warn("ignoring deprecated osdtimeout option\n"); 460 break; 461 case Opt_osdkeepalivetimeout: 462 /* 0 isn't well defined right now, reject it */ 463 if (intval < 1 || intval > INT_MAX / 1000) { 464 pr_err("osdkeepalive out of range\n"); 465 err = -EINVAL; 466 goto out; 467 } 468 opt->osd_keepalive_timeout = 469 msecs_to_jiffies(intval * 1000); 470 break; 471 case Opt_osd_idle_ttl: 472 /* 0 isn't well defined right now, reject it */ 473 if (intval < 1 || intval > INT_MAX / 1000) { 474 pr_err("osd_idle_ttl out of range\n"); 475 err = -EINVAL; 476 goto out; 477 } 478 opt->osd_idle_ttl = msecs_to_jiffies(intval * 1000); 479 break; 480 case Opt_mount_timeout: 481 /* 0 is "wait forever" (i.e. infinite timeout) */ 482 if (intval < 0 || intval > INT_MAX / 1000) { 483 pr_err("mount_timeout out of range\n"); 484 err = -EINVAL; 485 goto out; 486 } 487 opt->mount_timeout = msecs_to_jiffies(intval * 1000); 488 break; 489 case Opt_osd_request_timeout: 490 /* 0 is "wait forever" (i.e. infinite timeout) */ 491 if (intval < 0 || intval > INT_MAX / 1000) { 492 pr_err("osd_request_timeout out of range\n"); 493 err = -EINVAL; 494 goto out; 495 } 496 opt->osd_request_timeout = msecs_to_jiffies(intval * 1000); 497 break; 498 499 case Opt_share: 500 opt->flags &= ~CEPH_OPT_NOSHARE; 501 break; 502 case Opt_noshare: 503 opt->flags |= CEPH_OPT_NOSHARE; 504 break; 505 506 case Opt_crc: 507 opt->flags &= ~CEPH_OPT_NOCRC; 508 break; 509 case Opt_nocrc: 510 opt->flags |= CEPH_OPT_NOCRC; 511 break; 512 513 case Opt_cephx_require_signatures: 514 opt->flags &= ~CEPH_OPT_NOMSGAUTH; 515 break; 516 case Opt_nocephx_require_signatures: 517 opt->flags |= CEPH_OPT_NOMSGAUTH; 518 break; 519 case Opt_cephx_sign_messages: 520 opt->flags &= ~CEPH_OPT_NOMSGSIGN; 521 break; 522 case Opt_nocephx_sign_messages: 523 opt->flags |= CEPH_OPT_NOMSGSIGN; 524 break; 525 526 case Opt_tcp_nodelay: 527 opt->flags |= CEPH_OPT_TCP_NODELAY; 528 break; 529 case Opt_notcp_nodelay: 530 opt->flags &= ~CEPH_OPT_TCP_NODELAY; 531 break; 532 533 default: 534 BUG_ON(token); 535 } 536 } 537 538 /* success */ 539 return opt; 540 541 out: 542 ceph_destroy_options(opt); 543 return ERR_PTR(err); 544 } 545 EXPORT_SYMBOL(ceph_parse_options); 546 547 int ceph_print_client_options(struct seq_file *m, struct ceph_client *client) 548 { 549 struct ceph_options *opt = client->options; 550 size_t pos = m->count; 551 552 if (opt->name) { 553 seq_puts(m, "name="); 554 seq_escape(m, opt->name, ", \t\n\\"); 555 seq_putc(m, ','); 556 } 557 if (opt->key) 558 seq_puts(m, "secret=<hidden>,"); 559 560 if (opt->flags & CEPH_OPT_FSID) 561 seq_printf(m, "fsid=%pU,", &opt->fsid); 562 if (opt->flags & CEPH_OPT_NOSHARE) 563 seq_puts(m, "noshare,"); 564 if (opt->flags & CEPH_OPT_NOCRC) 565 seq_puts(m, "nocrc,"); 566 if (opt->flags & CEPH_OPT_NOMSGAUTH) 567 seq_puts(m, "nocephx_require_signatures,"); 568 if (opt->flags & CEPH_OPT_NOMSGSIGN) 569 seq_puts(m, "nocephx_sign_messages,"); 570 if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0) 571 seq_puts(m, "notcp_nodelay,"); 572 573 if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT) 574 seq_printf(m, "mount_timeout=%d,", 575 jiffies_to_msecs(opt->mount_timeout) / 1000); 576 if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT) 577 seq_printf(m, "osd_idle_ttl=%d,", 578 jiffies_to_msecs(opt->osd_idle_ttl) / 1000); 579 if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT) 580 seq_printf(m, "osdkeepalivetimeout=%d,", 581 jiffies_to_msecs(opt->osd_keepalive_timeout) / 1000); 582 if (opt->osd_request_timeout != CEPH_OSD_REQUEST_TIMEOUT_DEFAULT) 583 seq_printf(m, "osd_request_timeout=%d,", 584 jiffies_to_msecs(opt->osd_request_timeout) / 1000); 585 586 /* drop redundant comma */ 587 if (m->count != pos) 588 m->count--; 589 590 return 0; 591 } 592 EXPORT_SYMBOL(ceph_print_client_options); 593 594 struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client) 595 { 596 return &client->msgr.inst.addr; 597 } 598 EXPORT_SYMBOL(ceph_client_addr); 599 600 u64 ceph_client_gid(struct ceph_client *client) 601 { 602 return client->monc.auth->global_id; 603 } 604 EXPORT_SYMBOL(ceph_client_gid); 605 606 /* 607 * create a fresh client instance 608 */ 609 struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private) 610 { 611 struct ceph_client *client; 612 struct ceph_entity_addr *myaddr = NULL; 613 int err; 614 615 err = wait_for_random_bytes(); 616 if (err < 0) 617 return ERR_PTR(err); 618 619 client = kzalloc(sizeof(*client), GFP_KERNEL); 620 if (client == NULL) 621 return ERR_PTR(-ENOMEM); 622 623 client->private = private; 624 client->options = opt; 625 626 mutex_init(&client->mount_mutex); 627 init_waitqueue_head(&client->auth_wq); 628 client->auth_err = 0; 629 630 client->extra_mon_dispatch = NULL; 631 client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT; 632 client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT; 633 634 if (!ceph_test_opt(client, NOMSGAUTH)) 635 client->required_features |= CEPH_FEATURE_MSG_AUTH; 636 637 /* msgr */ 638 if (ceph_test_opt(client, MYIP)) 639 myaddr = &client->options->my_addr; 640 641 ceph_messenger_init(&client->msgr, myaddr); 642 643 /* subsystems */ 644 err = ceph_monc_init(&client->monc, client); 645 if (err < 0) 646 goto fail; 647 err = ceph_osdc_init(&client->osdc, client); 648 if (err < 0) 649 goto fail_monc; 650 651 return client; 652 653 fail_monc: 654 ceph_monc_stop(&client->monc); 655 fail: 656 ceph_messenger_fini(&client->msgr); 657 kfree(client); 658 return ERR_PTR(err); 659 } 660 EXPORT_SYMBOL(ceph_create_client); 661 662 void ceph_destroy_client(struct ceph_client *client) 663 { 664 dout("destroy_client %p\n", client); 665 666 atomic_set(&client->msgr.stopping, 1); 667 668 /* unmount */ 669 ceph_osdc_stop(&client->osdc); 670 ceph_monc_stop(&client->monc); 671 ceph_messenger_fini(&client->msgr); 672 673 ceph_debugfs_client_cleanup(client); 674 675 ceph_destroy_options(client->options); 676 677 kfree(client); 678 dout("destroy_client %p done\n", client); 679 } 680 EXPORT_SYMBOL(ceph_destroy_client); 681 682 /* 683 * true if we have the mon map (and have thus joined the cluster) 684 */ 685 static bool have_mon_and_osd_map(struct ceph_client *client) 686 { 687 return client->monc.monmap && client->monc.monmap->epoch && 688 client->osdc.osdmap && client->osdc.osdmap->epoch; 689 } 690 691 /* 692 * mount: join the ceph cluster, and open root directory. 693 */ 694 int __ceph_open_session(struct ceph_client *client, unsigned long started) 695 { 696 unsigned long timeout = client->options->mount_timeout; 697 long err; 698 699 /* open session, and wait for mon and osd maps */ 700 err = ceph_monc_open_session(&client->monc); 701 if (err < 0) 702 return err; 703 704 while (!have_mon_and_osd_map(client)) { 705 if (timeout && time_after_eq(jiffies, started + timeout)) 706 return -ETIMEDOUT; 707 708 /* wait */ 709 dout("mount waiting for mon_map\n"); 710 err = wait_event_interruptible_timeout(client->auth_wq, 711 have_mon_and_osd_map(client) || (client->auth_err < 0), 712 ceph_timeout_jiffies(timeout)); 713 if (err < 0) 714 return err; 715 if (client->auth_err < 0) 716 return client->auth_err; 717 } 718 719 pr_info("client%llu fsid %pU\n", ceph_client_gid(client), 720 &client->fsid); 721 ceph_debugfs_client_init(client); 722 723 return 0; 724 } 725 EXPORT_SYMBOL(__ceph_open_session); 726 727 728 int ceph_open_session(struct ceph_client *client) 729 { 730 int ret; 731 unsigned long started = jiffies; /* note the start time */ 732 733 dout("open_session start\n"); 734 mutex_lock(&client->mount_mutex); 735 736 ret = __ceph_open_session(client, started); 737 738 mutex_unlock(&client->mount_mutex); 739 return ret; 740 } 741 EXPORT_SYMBOL(ceph_open_session); 742 743 744 static int __init init_ceph_lib(void) 745 { 746 int ret = 0; 747 748 ret = ceph_debugfs_init(); 749 if (ret < 0) 750 goto out; 751 752 ret = ceph_crypto_init(); 753 if (ret < 0) 754 goto out_debugfs; 755 756 ret = ceph_msgr_init(); 757 if (ret < 0) 758 goto out_crypto; 759 760 ret = ceph_osdc_setup(); 761 if (ret < 0) 762 goto out_msgr; 763 764 pr_info("loaded (mon/osd proto %d/%d)\n", 765 CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL); 766 767 return 0; 768 769 out_msgr: 770 ceph_msgr_exit(); 771 out_crypto: 772 ceph_crypto_shutdown(); 773 out_debugfs: 774 ceph_debugfs_cleanup(); 775 out: 776 return ret; 777 } 778 779 static void __exit exit_ceph_lib(void) 780 { 781 dout("exit_ceph_lib\n"); 782 WARN_ON(!ceph_strings_empty()); 783 784 ceph_osdc_cleanup(); 785 ceph_msgr_exit(); 786 ceph_crypto_shutdown(); 787 ceph_debugfs_cleanup(); 788 } 789 790 module_init(init_ceph_lib); 791 module_exit(exit_ceph_lib); 792 793 MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); 794 MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); 795 MODULE_AUTHOR("Patience Warnick <patience@newdream.net>"); 796 MODULE_DESCRIPTION("Ceph core library"); 797 MODULE_LICENSE("GPL"); 798