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 /* 49 * find filename portion of a path (/foo/bar/baz -> baz) 50 */ 51 const char *ceph_file_part(const char *s, int len) 52 { 53 const char *e = s + len; 54 55 while (e != s && *(e-1) != '/') 56 e--; 57 return e; 58 } 59 EXPORT_SYMBOL(ceph_file_part); 60 61 const char *ceph_msg_type_name(int type) 62 { 63 switch (type) { 64 case CEPH_MSG_SHUTDOWN: return "shutdown"; 65 case CEPH_MSG_PING: return "ping"; 66 case CEPH_MSG_AUTH: return "auth"; 67 case CEPH_MSG_AUTH_REPLY: return "auth_reply"; 68 case CEPH_MSG_MON_MAP: return "mon_map"; 69 case CEPH_MSG_MON_GET_MAP: return "mon_get_map"; 70 case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe"; 71 case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack"; 72 case CEPH_MSG_STATFS: return "statfs"; 73 case CEPH_MSG_STATFS_REPLY: return "statfs_reply"; 74 case CEPH_MSG_MON_GET_VERSION: return "mon_get_version"; 75 case CEPH_MSG_MON_GET_VERSION_REPLY: return "mon_get_version_reply"; 76 case CEPH_MSG_MDS_MAP: return "mds_map"; 77 case CEPH_MSG_CLIENT_SESSION: return "client_session"; 78 case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect"; 79 case CEPH_MSG_CLIENT_REQUEST: return "client_request"; 80 case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward"; 81 case CEPH_MSG_CLIENT_REPLY: return "client_reply"; 82 case CEPH_MSG_CLIENT_CAPS: return "client_caps"; 83 case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release"; 84 case CEPH_MSG_CLIENT_SNAP: return "client_snap"; 85 case CEPH_MSG_CLIENT_LEASE: return "client_lease"; 86 case CEPH_MSG_OSD_MAP: return "osd_map"; 87 case CEPH_MSG_OSD_OP: return "osd_op"; 88 case CEPH_MSG_OSD_OPREPLY: return "osd_opreply"; 89 case CEPH_MSG_WATCH_NOTIFY: return "watch_notify"; 90 default: return "unknown"; 91 } 92 } 93 EXPORT_SYMBOL(ceph_msg_type_name); 94 95 /* 96 * Initially learn our fsid, or verify an fsid matches. 97 */ 98 int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid) 99 { 100 if (client->have_fsid) { 101 if (ceph_fsid_compare(&client->fsid, fsid)) { 102 pr_err("bad fsid, had %pU got %pU", 103 &client->fsid, fsid); 104 return -1; 105 } 106 } else { 107 memcpy(&client->fsid, fsid, sizeof(*fsid)); 108 } 109 return 0; 110 } 111 EXPORT_SYMBOL(ceph_check_fsid); 112 113 static int strcmp_null(const char *s1, const char *s2) 114 { 115 if (!s1 && !s2) 116 return 0; 117 if (s1 && !s2) 118 return -1; 119 if (!s1 && s2) 120 return 1; 121 return strcmp(s1, s2); 122 } 123 124 int ceph_compare_options(struct ceph_options *new_opt, 125 struct ceph_client *client) 126 { 127 struct ceph_options *opt1 = new_opt; 128 struct ceph_options *opt2 = client->options; 129 int ofs = offsetof(struct ceph_options, mon_addr); 130 int i; 131 int ret; 132 133 /* 134 * Don't bother comparing options if network namespaces don't 135 * match. 136 */ 137 if (!net_eq(current->nsproxy->net_ns, read_pnet(&client->msgr.net))) 138 return -1; 139 140 ret = memcmp(opt1, opt2, ofs); 141 if (ret) 142 return ret; 143 144 ret = strcmp_null(opt1->name, opt2->name); 145 if (ret) 146 return ret; 147 148 if (opt1->key && !opt2->key) 149 return -1; 150 if (!opt1->key && opt2->key) 151 return 1; 152 if (opt1->key && opt2->key) { 153 if (opt1->key->type != opt2->key->type) 154 return -1; 155 if (opt1->key->created.tv_sec != opt2->key->created.tv_sec) 156 return -1; 157 if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec) 158 return -1; 159 if (opt1->key->len != opt2->key->len) 160 return -1; 161 if (opt1->key->key && !opt2->key->key) 162 return -1; 163 if (!opt1->key->key && opt2->key->key) 164 return 1; 165 if (opt1->key->key && opt2->key->key) { 166 ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len); 167 if (ret) 168 return ret; 169 } 170 } 171 172 /* any matching mon ip implies a match */ 173 for (i = 0; i < opt1->num_mon; i++) { 174 if (ceph_monmap_contains(client->monc.monmap, 175 &opt1->mon_addr[i])) 176 return 0; 177 } 178 return -1; 179 } 180 EXPORT_SYMBOL(ceph_compare_options); 181 182 void *ceph_kvmalloc(size_t size, gfp_t flags) 183 { 184 if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) { 185 void *ptr = kmalloc(size, flags | __GFP_NOWARN); 186 if (ptr) 187 return ptr; 188 } 189 190 return __vmalloc(size, flags | __GFP_HIGHMEM, PAGE_KERNEL); 191 } 192 193 194 static int parse_fsid(const char *str, struct ceph_fsid *fsid) 195 { 196 int i = 0; 197 char tmp[3]; 198 int err = -EINVAL; 199 int d; 200 201 dout("parse_fsid '%s'\n", str); 202 tmp[2] = 0; 203 while (*str && i < 16) { 204 if (ispunct(*str)) { 205 str++; 206 continue; 207 } 208 if (!isxdigit(str[0]) || !isxdigit(str[1])) 209 break; 210 tmp[0] = str[0]; 211 tmp[1] = str[1]; 212 if (sscanf(tmp, "%x", &d) < 1) 213 break; 214 fsid->fsid[i] = d & 0xff; 215 i++; 216 str += 2; 217 } 218 219 if (i == 16) 220 err = 0; 221 dout("parse_fsid ret %d got fsid %pU", err, fsid); 222 return err; 223 } 224 225 /* 226 * ceph options 227 */ 228 enum { 229 Opt_osdtimeout, 230 Opt_osdkeepalivetimeout, 231 Opt_mount_timeout, 232 Opt_osd_idle_ttl, 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 /* 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; 364 365 /* get mon ip(s) */ 366 /* ip1[:port1][,ip2[:port2]...] */ 367 err = ceph_parse_ips(dev_name, dev_name_end, opt->mon_addr, 368 CEPH_MAX_MON, &opt->num_mon); 369 if (err < 0) 370 goto out; 371 372 /* parse mount options */ 373 while ((c = strsep(&options, ",")) != NULL) { 374 int token, intval, ret; 375 if (!*c) 376 continue; 377 err = -EINVAL; 378 token = match_token((char *)c, opt_tokens, argstr); 379 if (token < 0 && parse_extra_token) { 380 /* extra? */ 381 err = parse_extra_token((char *)c, private); 382 if (err < 0) { 383 pr_err("bad option at '%s'\n", c); 384 goto out; 385 } 386 continue; 387 } 388 if (token < Opt_last_int) { 389 ret = match_int(&argstr[0], &intval); 390 if (ret < 0) { 391 pr_err("bad mount option arg (not int) " 392 "at '%s'\n", c); 393 continue; 394 } 395 dout("got int token %d val %d\n", token, intval); 396 } else if (token > Opt_last_int && token < Opt_last_string) { 397 dout("got string token %d val %s\n", token, 398 argstr[0].from); 399 } else { 400 dout("got token %d\n", token); 401 } 402 switch (token) { 403 case Opt_ip: 404 err = ceph_parse_ips(argstr[0].from, 405 argstr[0].to, 406 &opt->my_addr, 407 1, NULL); 408 if (err < 0) 409 goto out; 410 opt->flags |= CEPH_OPT_MYIP; 411 break; 412 413 case Opt_fsid: 414 err = parse_fsid(argstr[0].from, &opt->fsid); 415 if (err == 0) 416 opt->flags |= CEPH_OPT_FSID; 417 break; 418 case Opt_name: 419 opt->name = kstrndup(argstr[0].from, 420 argstr[0].to-argstr[0].from, 421 GFP_KERNEL); 422 break; 423 case Opt_secret: 424 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); 425 if (!opt->key) { 426 err = -ENOMEM; 427 goto out; 428 } 429 err = ceph_crypto_key_unarmor(opt->key, argstr[0].from); 430 if (err < 0) 431 goto out; 432 break; 433 case Opt_key: 434 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); 435 if (!opt->key) { 436 err = -ENOMEM; 437 goto out; 438 } 439 err = get_secret(opt->key, argstr[0].from); 440 if (err < 0) 441 goto out; 442 break; 443 444 /* misc */ 445 case Opt_osdtimeout: 446 pr_warn("ignoring deprecated osdtimeout option\n"); 447 break; 448 case Opt_osdkeepalivetimeout: 449 /* 0 isn't well defined right now, reject it */ 450 if (intval < 1 || intval > INT_MAX / 1000) { 451 pr_err("osdkeepalive out of range\n"); 452 err = -EINVAL; 453 goto out; 454 } 455 opt->osd_keepalive_timeout = 456 msecs_to_jiffies(intval * 1000); 457 break; 458 case Opt_osd_idle_ttl: 459 /* 0 isn't well defined right now, reject it */ 460 if (intval < 1 || intval > INT_MAX / 1000) { 461 pr_err("osd_idle_ttl out of range\n"); 462 err = -EINVAL; 463 goto out; 464 } 465 opt->osd_idle_ttl = msecs_to_jiffies(intval * 1000); 466 break; 467 case Opt_mount_timeout: 468 /* 0 is "wait forever" (i.e. infinite timeout) */ 469 if (intval < 0 || intval > INT_MAX / 1000) { 470 pr_err("mount_timeout out of range\n"); 471 err = -EINVAL; 472 goto out; 473 } 474 opt->mount_timeout = msecs_to_jiffies(intval * 1000); 475 break; 476 477 case Opt_share: 478 opt->flags &= ~CEPH_OPT_NOSHARE; 479 break; 480 case Opt_noshare: 481 opt->flags |= CEPH_OPT_NOSHARE; 482 break; 483 484 case Opt_crc: 485 opt->flags &= ~CEPH_OPT_NOCRC; 486 break; 487 case Opt_nocrc: 488 opt->flags |= CEPH_OPT_NOCRC; 489 break; 490 491 case Opt_cephx_require_signatures: 492 opt->flags &= ~CEPH_OPT_NOMSGAUTH; 493 break; 494 case Opt_nocephx_require_signatures: 495 opt->flags |= CEPH_OPT_NOMSGAUTH; 496 break; 497 case Opt_cephx_sign_messages: 498 opt->flags &= ~CEPH_OPT_NOMSGSIGN; 499 break; 500 case Opt_nocephx_sign_messages: 501 opt->flags |= CEPH_OPT_NOMSGSIGN; 502 break; 503 504 case Opt_tcp_nodelay: 505 opt->flags |= CEPH_OPT_TCP_NODELAY; 506 break; 507 case Opt_notcp_nodelay: 508 opt->flags &= ~CEPH_OPT_TCP_NODELAY; 509 break; 510 511 default: 512 BUG_ON(token); 513 } 514 } 515 516 /* success */ 517 return opt; 518 519 out: 520 ceph_destroy_options(opt); 521 return ERR_PTR(err); 522 } 523 EXPORT_SYMBOL(ceph_parse_options); 524 525 int ceph_print_client_options(struct seq_file *m, struct ceph_client *client) 526 { 527 struct ceph_options *opt = client->options; 528 size_t pos = m->count; 529 530 if (opt->name) { 531 seq_puts(m, "name="); 532 seq_escape(m, opt->name, ", \t\n\\"); 533 seq_putc(m, ','); 534 } 535 if (opt->key) 536 seq_puts(m, "secret=<hidden>,"); 537 538 if (opt->flags & CEPH_OPT_FSID) 539 seq_printf(m, "fsid=%pU,", &opt->fsid); 540 if (opt->flags & CEPH_OPT_NOSHARE) 541 seq_puts(m, "noshare,"); 542 if (opt->flags & CEPH_OPT_NOCRC) 543 seq_puts(m, "nocrc,"); 544 if (opt->flags & CEPH_OPT_NOMSGAUTH) 545 seq_puts(m, "nocephx_require_signatures,"); 546 if (opt->flags & CEPH_OPT_NOMSGSIGN) 547 seq_puts(m, "nocephx_sign_messages,"); 548 if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0) 549 seq_puts(m, "notcp_nodelay,"); 550 551 if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT) 552 seq_printf(m, "mount_timeout=%d,", 553 jiffies_to_msecs(opt->mount_timeout) / 1000); 554 if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT) 555 seq_printf(m, "osd_idle_ttl=%d,", 556 jiffies_to_msecs(opt->osd_idle_ttl) / 1000); 557 if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT) 558 seq_printf(m, "osdkeepalivetimeout=%d,", 559 jiffies_to_msecs(opt->osd_keepalive_timeout) / 1000); 560 561 /* drop redundant comma */ 562 if (m->count != pos) 563 m->count--; 564 565 return 0; 566 } 567 EXPORT_SYMBOL(ceph_print_client_options); 568 569 u64 ceph_client_id(struct ceph_client *client) 570 { 571 return client->monc.auth->global_id; 572 } 573 EXPORT_SYMBOL(ceph_client_id); 574 575 /* 576 * create a fresh client instance 577 */ 578 struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private, 579 u64 supported_features, 580 u64 required_features) 581 { 582 struct ceph_client *client; 583 struct ceph_entity_addr *myaddr = NULL; 584 int err = -ENOMEM; 585 586 client = kzalloc(sizeof(*client), GFP_KERNEL); 587 if (client == NULL) 588 return ERR_PTR(-ENOMEM); 589 590 client->private = private; 591 client->options = opt; 592 593 mutex_init(&client->mount_mutex); 594 init_waitqueue_head(&client->auth_wq); 595 client->auth_err = 0; 596 597 if (!ceph_test_opt(client, NOMSGAUTH)) 598 required_features |= CEPH_FEATURE_MSG_AUTH; 599 600 client->extra_mon_dispatch = NULL; 601 client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT | 602 supported_features; 603 client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT | 604 required_features; 605 606 /* msgr */ 607 if (ceph_test_opt(client, MYIP)) 608 myaddr = &client->options->my_addr; 609 610 ceph_messenger_init(&client->msgr, myaddr); 611 612 /* subsystems */ 613 err = ceph_monc_init(&client->monc, client); 614 if (err < 0) 615 goto fail; 616 err = ceph_osdc_init(&client->osdc, client); 617 if (err < 0) 618 goto fail_monc; 619 620 return client; 621 622 fail_monc: 623 ceph_monc_stop(&client->monc); 624 fail: 625 ceph_messenger_fini(&client->msgr); 626 kfree(client); 627 return ERR_PTR(err); 628 } 629 EXPORT_SYMBOL(ceph_create_client); 630 631 void ceph_destroy_client(struct ceph_client *client) 632 { 633 dout("destroy_client %p\n", client); 634 635 atomic_set(&client->msgr.stopping, 1); 636 637 /* unmount */ 638 ceph_osdc_stop(&client->osdc); 639 ceph_monc_stop(&client->monc); 640 ceph_messenger_fini(&client->msgr); 641 642 ceph_debugfs_client_cleanup(client); 643 644 ceph_destroy_options(client->options); 645 646 kfree(client); 647 dout("destroy_client %p done\n", client); 648 } 649 EXPORT_SYMBOL(ceph_destroy_client); 650 651 /* 652 * true if we have the mon map (and have thus joined the cluster) 653 */ 654 static bool have_mon_and_osd_map(struct ceph_client *client) 655 { 656 return client->monc.monmap && client->monc.monmap->epoch && 657 client->osdc.osdmap && client->osdc.osdmap->epoch; 658 } 659 660 /* 661 * mount: join the ceph cluster, and open root directory. 662 */ 663 int __ceph_open_session(struct ceph_client *client, unsigned long started) 664 { 665 unsigned long timeout = client->options->mount_timeout; 666 long err; 667 668 /* open session, and wait for mon and osd maps */ 669 err = ceph_monc_open_session(&client->monc); 670 if (err < 0) 671 return err; 672 673 while (!have_mon_and_osd_map(client)) { 674 if (timeout && time_after_eq(jiffies, started + timeout)) 675 return -ETIMEDOUT; 676 677 /* wait */ 678 dout("mount waiting for mon_map\n"); 679 err = wait_event_interruptible_timeout(client->auth_wq, 680 have_mon_and_osd_map(client) || (client->auth_err < 0), 681 ceph_timeout_jiffies(timeout)); 682 if (err < 0) 683 return err; 684 if (client->auth_err < 0) 685 return client->auth_err; 686 } 687 688 pr_info("client%llu fsid %pU\n", ceph_client_id(client), &client->fsid); 689 ceph_debugfs_client_init(client); 690 691 return 0; 692 } 693 EXPORT_SYMBOL(__ceph_open_session); 694 695 696 int ceph_open_session(struct ceph_client *client) 697 { 698 int ret; 699 unsigned long started = jiffies; /* note the start time */ 700 701 dout("open_session start\n"); 702 mutex_lock(&client->mount_mutex); 703 704 ret = __ceph_open_session(client, started); 705 706 mutex_unlock(&client->mount_mutex); 707 return ret; 708 } 709 EXPORT_SYMBOL(ceph_open_session); 710 711 712 static int __init init_ceph_lib(void) 713 { 714 int ret = 0; 715 716 ret = ceph_debugfs_init(); 717 if (ret < 0) 718 goto out; 719 720 ret = ceph_crypto_init(); 721 if (ret < 0) 722 goto out_debugfs; 723 724 ret = ceph_msgr_init(); 725 if (ret < 0) 726 goto out_crypto; 727 728 ret = ceph_osdc_setup(); 729 if (ret < 0) 730 goto out_msgr; 731 732 pr_info("loaded (mon/osd proto %d/%d)\n", 733 CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL); 734 735 return 0; 736 737 out_msgr: 738 ceph_msgr_exit(); 739 out_crypto: 740 ceph_crypto_shutdown(); 741 out_debugfs: 742 ceph_debugfs_cleanup(); 743 out: 744 return ret; 745 } 746 747 static void __exit exit_ceph_lib(void) 748 { 749 dout("exit_ceph_lib\n"); 750 ceph_osdc_cleanup(); 751 ceph_msgr_exit(); 752 ceph_crypto_shutdown(); 753 ceph_debugfs_cleanup(); 754 } 755 756 module_init(init_ceph_lib); 757 module_exit(exit_ceph_lib); 758 759 MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); 760 MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); 761 MODULE_AUTHOR("Patience Warnick <patience@newdream.net>"); 762 MODULE_DESCRIPTION("Ceph core library"); 763 MODULE_LICENSE("GPL"); 764