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