1 // SPDX-License-Identifier: GPL-2.0-only 2 3 #include <linux/ceph/ceph_debug.h> 4 #include <linux/backing-dev.h> 5 #include <linux/ctype.h> 6 #include <linux/fs.h> 7 #include <linux/inet.h> 8 #include <linux/in6.h> 9 #include <linux/key.h> 10 #include <keys/ceph-type.h> 11 #include <linux/module.h> 12 #include <linux/mount.h> 13 #include <linux/nsproxy.h> 14 #include <linux/fs_parser.h> 15 #include <linux/sched.h> 16 #include <linux/sched/mm.h> 17 #include <linux/seq_file.h> 18 #include <linux/slab.h> 19 #include <linux/statfs.h> 20 #include <linux/string.h> 21 #include <linux/vmalloc.h> 22 23 24 #include <linux/ceph/ceph_features.h> 25 #include <linux/ceph/libceph.h> 26 #include <linux/ceph/debugfs.h> 27 #include <linux/ceph/decode.h> 28 #include <linux/ceph/mon_client.h> 29 #include <linux/ceph/auth.h> 30 #include "crypto.h" 31 32 33 /* 34 * Module compatibility interface. For now it doesn't do anything, 35 * but its existence signals a certain level of functionality. 36 * 37 * The data buffer is used to pass information both to and from 38 * libceph. The return value indicates whether libceph determines 39 * it is compatible with the caller (from another kernel module), 40 * given the provided data. 41 * 42 * The data pointer can be null. 43 */ 44 bool libceph_compatible(void *data) 45 { 46 return true; 47 } 48 EXPORT_SYMBOL(libceph_compatible); 49 50 static int param_get_supported_features(char *buffer, 51 const struct kernel_param *kp) 52 { 53 return sprintf(buffer, "0x%llx", CEPH_FEATURES_SUPPORTED_DEFAULT); 54 } 55 static const struct kernel_param_ops param_ops_supported_features = { 56 .get = param_get_supported_features, 57 }; 58 module_param_cb(supported_features, ¶m_ops_supported_features, NULL, 59 0444); 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_FS_MAP_USER: return "fs_map_user"; 78 case CEPH_MSG_CLIENT_SESSION: return "client_session"; 79 case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect"; 80 case CEPH_MSG_CLIENT_REQUEST: return "client_request"; 81 case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward"; 82 case CEPH_MSG_CLIENT_REPLY: return "client_reply"; 83 case CEPH_MSG_CLIENT_CAPS: return "client_caps"; 84 case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release"; 85 case CEPH_MSG_CLIENT_QUOTA: return "client_quota"; 86 case CEPH_MSG_CLIENT_SNAP: return "client_snap"; 87 case CEPH_MSG_CLIENT_LEASE: return "client_lease"; 88 case CEPH_MSG_POOLOP_REPLY: return "poolop_reply"; 89 case CEPH_MSG_POOLOP: return "poolop"; 90 case CEPH_MSG_MON_COMMAND: return "mon_command"; 91 case CEPH_MSG_MON_COMMAND_ACK: return "mon_command_ack"; 92 case CEPH_MSG_OSD_MAP: return "osd_map"; 93 case CEPH_MSG_OSD_OP: return "osd_op"; 94 case CEPH_MSG_OSD_OPREPLY: return "osd_opreply"; 95 case CEPH_MSG_WATCH_NOTIFY: return "watch_notify"; 96 case CEPH_MSG_OSD_BACKOFF: return "osd_backoff"; 97 default: return "unknown"; 98 } 99 } 100 EXPORT_SYMBOL(ceph_msg_type_name); 101 102 /* 103 * Initially learn our fsid, or verify an fsid matches. 104 */ 105 int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid) 106 { 107 if (client->have_fsid) { 108 if (ceph_fsid_compare(&client->fsid, fsid)) { 109 pr_err("bad fsid, had %pU got %pU", 110 &client->fsid, fsid); 111 return -1; 112 } 113 } else { 114 memcpy(&client->fsid, fsid, sizeof(*fsid)); 115 } 116 return 0; 117 } 118 EXPORT_SYMBOL(ceph_check_fsid); 119 120 static int strcmp_null(const char *s1, const char *s2) 121 { 122 if (!s1 && !s2) 123 return 0; 124 if (s1 && !s2) 125 return -1; 126 if (!s1 && s2) 127 return 1; 128 return strcmp(s1, s2); 129 } 130 131 int ceph_compare_options(struct ceph_options *new_opt, 132 struct ceph_client *client) 133 { 134 struct ceph_options *opt1 = new_opt; 135 struct ceph_options *opt2 = client->options; 136 int ofs = offsetof(struct ceph_options, mon_addr); 137 int i; 138 int ret; 139 140 /* 141 * Don't bother comparing options if network namespaces don't 142 * match. 143 */ 144 if (!net_eq(current->nsproxy->net_ns, read_pnet(&client->msgr.net))) 145 return -1; 146 147 ret = memcmp(opt1, opt2, ofs); 148 if (ret) 149 return ret; 150 151 ret = strcmp_null(opt1->name, opt2->name); 152 if (ret) 153 return ret; 154 155 if (opt1->key && !opt2->key) 156 return -1; 157 if (!opt1->key && opt2->key) 158 return 1; 159 if (opt1->key && opt2->key) { 160 if (opt1->key->type != opt2->key->type) 161 return -1; 162 if (opt1->key->created.tv_sec != opt2->key->created.tv_sec) 163 return -1; 164 if (opt1->key->created.tv_nsec != opt2->key->created.tv_nsec) 165 return -1; 166 if (opt1->key->len != opt2->key->len) 167 return -1; 168 if (opt1->key->key && !opt2->key->key) 169 return -1; 170 if (!opt1->key->key && opt2->key->key) 171 return 1; 172 if (opt1->key->key && opt2->key->key) { 173 ret = memcmp(opt1->key->key, opt2->key->key, opt1->key->len); 174 if (ret) 175 return ret; 176 } 177 } 178 179 ret = ceph_compare_crush_locs(&opt1->crush_locs, &opt2->crush_locs); 180 if (ret) 181 return ret; 182 183 /* any matching mon ip implies a match */ 184 for (i = 0; i < opt1->num_mon; i++) { 185 if (ceph_monmap_contains(client->monc.monmap, 186 &opt1->mon_addr[i])) 187 return 0; 188 } 189 return -1; 190 } 191 EXPORT_SYMBOL(ceph_compare_options); 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\n", err, fsid); 221 return err; 222 } 223 224 /* 225 * ceph options 226 */ 227 enum { 228 Opt_osdkeepalivetimeout, 229 Opt_mount_timeout, 230 Opt_osd_idle_ttl, 231 Opt_osd_request_timeout, 232 /* int args above */ 233 Opt_fsid, 234 Opt_name, 235 Opt_secret, 236 Opt_key, 237 Opt_ip, 238 Opt_crush_location, 239 Opt_read_from_replica, 240 Opt_ms_mode, 241 /* string args above */ 242 Opt_share, 243 Opt_crc, 244 Opt_cephx_require_signatures, 245 Opt_cephx_sign_messages, 246 Opt_tcp_nodelay, 247 Opt_abort_on_full, 248 }; 249 250 enum { 251 Opt_read_from_replica_no, 252 Opt_read_from_replica_balance, 253 Opt_read_from_replica_localize, 254 }; 255 256 static const struct constant_table ceph_param_read_from_replica[] = { 257 {"no", Opt_read_from_replica_no}, 258 {"balance", Opt_read_from_replica_balance}, 259 {"localize", Opt_read_from_replica_localize}, 260 {} 261 }; 262 263 enum ceph_ms_mode { 264 Opt_ms_mode_legacy, 265 Opt_ms_mode_crc, 266 Opt_ms_mode_secure, 267 Opt_ms_mode_prefer_crc, 268 Opt_ms_mode_prefer_secure 269 }; 270 271 static const struct constant_table ceph_param_ms_mode[] = { 272 {"legacy", Opt_ms_mode_legacy}, 273 {"crc", Opt_ms_mode_crc}, 274 {"secure", Opt_ms_mode_secure}, 275 {"prefer-crc", Opt_ms_mode_prefer_crc}, 276 {"prefer-secure", Opt_ms_mode_prefer_secure}, 277 {} 278 }; 279 280 static const struct fs_parameter_spec ceph_parameters[] = { 281 fsparam_flag ("abort_on_full", Opt_abort_on_full), 282 __fsparam (NULL, "cephx_require_signatures", Opt_cephx_require_signatures, 283 fs_param_neg_with_no|fs_param_deprecated, NULL), 284 fsparam_flag_no ("cephx_sign_messages", Opt_cephx_sign_messages), 285 fsparam_flag_no ("crc", Opt_crc), 286 fsparam_string ("crush_location", Opt_crush_location), 287 fsparam_string ("fsid", Opt_fsid), 288 fsparam_string ("ip", Opt_ip), 289 fsparam_string ("key", Opt_key), 290 fsparam_u32 ("mount_timeout", Opt_mount_timeout), 291 fsparam_string ("name", Opt_name), 292 fsparam_u32 ("osd_idle_ttl", Opt_osd_idle_ttl), 293 fsparam_u32 ("osd_request_timeout", Opt_osd_request_timeout), 294 fsparam_u32 ("osdkeepalive", Opt_osdkeepalivetimeout), 295 fsparam_enum ("read_from_replica", Opt_read_from_replica, 296 ceph_param_read_from_replica), 297 fsparam_enum ("ms_mode", Opt_ms_mode, 298 ceph_param_ms_mode), 299 fsparam_string ("secret", Opt_secret), 300 fsparam_flag_no ("share", Opt_share), 301 fsparam_flag_no ("tcp_nodelay", Opt_tcp_nodelay), 302 {} 303 }; 304 305 struct ceph_options *ceph_alloc_options(void) 306 { 307 struct ceph_options *opt; 308 309 opt = kzalloc(sizeof(*opt), GFP_KERNEL); 310 if (!opt) 311 return NULL; 312 313 opt->crush_locs = RB_ROOT; 314 opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr), 315 GFP_KERNEL); 316 if (!opt->mon_addr) { 317 kfree(opt); 318 return NULL; 319 } 320 321 opt->flags = CEPH_OPT_DEFAULT; 322 opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT; 323 opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; 324 opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; 325 opt->osd_request_timeout = CEPH_OSD_REQUEST_TIMEOUT_DEFAULT; 326 opt->read_from_replica = CEPH_READ_FROM_REPLICA_DEFAULT; 327 opt->con_modes[0] = CEPH_CON_MODE_UNKNOWN; 328 opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN; 329 return opt; 330 } 331 EXPORT_SYMBOL(ceph_alloc_options); 332 333 void ceph_destroy_options(struct ceph_options *opt) 334 { 335 dout("destroy_options %p\n", opt); 336 if (!opt) 337 return; 338 339 ceph_clear_crush_locs(&opt->crush_locs); 340 kfree(opt->name); 341 if (opt->key) { 342 ceph_crypto_key_destroy(opt->key); 343 kfree(opt->key); 344 } 345 kfree(opt->mon_addr); 346 kfree(opt); 347 } 348 EXPORT_SYMBOL(ceph_destroy_options); 349 350 /* get secret from key store */ 351 static int get_secret(struct ceph_crypto_key *dst, const char *name, 352 struct p_log *log) 353 { 354 struct key *ukey; 355 int key_err; 356 int err = 0; 357 struct ceph_crypto_key *ckey; 358 359 ukey = request_key(&key_type_ceph, name, NULL); 360 if (IS_ERR(ukey)) { 361 /* request_key errors don't map nicely to mount(2) 362 errors; don't even try, but still printk */ 363 key_err = PTR_ERR(ukey); 364 switch (key_err) { 365 case -ENOKEY: 366 error_plog(log, "Failed due to key not found: %s", 367 name); 368 break; 369 case -EKEYEXPIRED: 370 error_plog(log, "Failed due to expired key: %s", 371 name); 372 break; 373 case -EKEYREVOKED: 374 error_plog(log, "Failed due to revoked key: %s", 375 name); 376 break; 377 default: 378 error_plog(log, "Failed due to key error %d: %s", 379 key_err, name); 380 } 381 err = -EPERM; 382 goto out; 383 } 384 385 ckey = ukey->payload.data[0]; 386 err = ceph_crypto_key_clone(dst, ckey); 387 if (err) 388 goto out_key; 389 /* pass through, err is 0 */ 390 391 out_key: 392 key_put(ukey); 393 out: 394 return err; 395 } 396 397 int ceph_parse_mon_ips(const char *buf, size_t len, struct ceph_options *opt, 398 struct fc_log *l) 399 { 400 struct p_log log = {.prefix = "libceph", .log = l}; 401 int ret; 402 403 /* ip1[:port1][,ip2[:port2]...] */ 404 ret = ceph_parse_ips(buf, buf + len, opt->mon_addr, CEPH_MAX_MON, 405 &opt->num_mon); 406 if (ret) { 407 error_plog(&log, "Failed to parse monitor IPs: %d", ret); 408 return ret; 409 } 410 411 return 0; 412 } 413 EXPORT_SYMBOL(ceph_parse_mon_ips); 414 415 int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt, 416 struct fc_log *l) 417 { 418 struct fs_parse_result result; 419 int token, err; 420 struct p_log log = {.prefix = "libceph", .log = l}; 421 422 token = __fs_parse(&log, ceph_parameters, param, &result); 423 dout("%s fs_parse '%s' token %d\n", __func__, param->key, token); 424 if (token < 0) 425 return token; 426 427 switch (token) { 428 case Opt_ip: 429 err = ceph_parse_ips(param->string, 430 param->string + param->size, 431 &opt->my_addr, 432 1, NULL); 433 if (err) { 434 error_plog(&log, "Failed to parse ip: %d", err); 435 return err; 436 } 437 opt->flags |= CEPH_OPT_MYIP; 438 break; 439 440 case Opt_fsid: 441 err = parse_fsid(param->string, &opt->fsid); 442 if (err) { 443 error_plog(&log, "Failed to parse fsid: %d", err); 444 return err; 445 } 446 opt->flags |= CEPH_OPT_FSID; 447 break; 448 case Opt_name: 449 kfree(opt->name); 450 opt->name = param->string; 451 param->string = NULL; 452 break; 453 case Opt_secret: 454 ceph_crypto_key_destroy(opt->key); 455 kfree(opt->key); 456 457 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); 458 if (!opt->key) 459 return -ENOMEM; 460 err = ceph_crypto_key_unarmor(opt->key, param->string); 461 if (err) { 462 error_plog(&log, "Failed to parse secret: %d", err); 463 return err; 464 } 465 break; 466 case Opt_key: 467 ceph_crypto_key_destroy(opt->key); 468 kfree(opt->key); 469 470 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); 471 if (!opt->key) 472 return -ENOMEM; 473 return get_secret(opt->key, param->string, &log); 474 case Opt_crush_location: 475 ceph_clear_crush_locs(&opt->crush_locs); 476 err = ceph_parse_crush_location(param->string, 477 &opt->crush_locs); 478 if (err) { 479 error_plog(&log, "Failed to parse CRUSH location: %d", 480 err); 481 return err; 482 } 483 break; 484 case Opt_read_from_replica: 485 switch (result.uint_32) { 486 case Opt_read_from_replica_no: 487 opt->read_from_replica = 0; 488 break; 489 case Opt_read_from_replica_balance: 490 opt->read_from_replica = CEPH_OSD_FLAG_BALANCE_READS; 491 break; 492 case Opt_read_from_replica_localize: 493 opt->read_from_replica = CEPH_OSD_FLAG_LOCALIZE_READS; 494 break; 495 default: 496 BUG(); 497 } 498 break; 499 case Opt_ms_mode: 500 switch (result.uint_32) { 501 case Opt_ms_mode_legacy: 502 opt->con_modes[0] = CEPH_CON_MODE_UNKNOWN; 503 opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN; 504 break; 505 case Opt_ms_mode_crc: 506 opt->con_modes[0] = CEPH_CON_MODE_CRC; 507 opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN; 508 break; 509 case Opt_ms_mode_secure: 510 opt->con_modes[0] = CEPH_CON_MODE_SECURE; 511 opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN; 512 break; 513 case Opt_ms_mode_prefer_crc: 514 opt->con_modes[0] = CEPH_CON_MODE_CRC; 515 opt->con_modes[1] = CEPH_CON_MODE_SECURE; 516 break; 517 case Opt_ms_mode_prefer_secure: 518 opt->con_modes[0] = CEPH_CON_MODE_SECURE; 519 opt->con_modes[1] = CEPH_CON_MODE_CRC; 520 break; 521 default: 522 BUG(); 523 } 524 break; 525 526 case Opt_osdkeepalivetimeout: 527 /* 0 isn't well defined right now, reject it */ 528 if (result.uint_32 < 1 || result.uint_32 > INT_MAX / 1000) 529 goto out_of_range; 530 opt->osd_keepalive_timeout = 531 msecs_to_jiffies(result.uint_32 * 1000); 532 break; 533 case Opt_osd_idle_ttl: 534 /* 0 isn't well defined right now, reject it */ 535 if (result.uint_32 < 1 || result.uint_32 > INT_MAX / 1000) 536 goto out_of_range; 537 opt->osd_idle_ttl = msecs_to_jiffies(result.uint_32 * 1000); 538 break; 539 case Opt_mount_timeout: 540 /* 0 is "wait forever" (i.e. infinite timeout) */ 541 if (result.uint_32 > INT_MAX / 1000) 542 goto out_of_range; 543 opt->mount_timeout = msecs_to_jiffies(result.uint_32 * 1000); 544 break; 545 case Opt_osd_request_timeout: 546 /* 0 is "wait forever" (i.e. infinite timeout) */ 547 if (result.uint_32 > INT_MAX / 1000) 548 goto out_of_range; 549 opt->osd_request_timeout = 550 msecs_to_jiffies(result.uint_32 * 1000); 551 break; 552 553 case Opt_share: 554 if (!result.negated) 555 opt->flags &= ~CEPH_OPT_NOSHARE; 556 else 557 opt->flags |= CEPH_OPT_NOSHARE; 558 break; 559 case Opt_crc: 560 if (!result.negated) 561 opt->flags &= ~CEPH_OPT_NOCRC; 562 else 563 opt->flags |= CEPH_OPT_NOCRC; 564 break; 565 case Opt_cephx_require_signatures: 566 if (!result.negated) 567 warn_plog(&log, "Ignoring cephx_require_signatures"); 568 else 569 warn_plog(&log, "Ignoring nocephx_require_signatures, use nocephx_sign_messages"); 570 break; 571 case Opt_cephx_sign_messages: 572 if (!result.negated) 573 opt->flags &= ~CEPH_OPT_NOMSGSIGN; 574 else 575 opt->flags |= CEPH_OPT_NOMSGSIGN; 576 break; 577 case Opt_tcp_nodelay: 578 if (!result.negated) 579 opt->flags |= CEPH_OPT_TCP_NODELAY; 580 else 581 opt->flags &= ~CEPH_OPT_TCP_NODELAY; 582 break; 583 584 case Opt_abort_on_full: 585 opt->flags |= CEPH_OPT_ABORT_ON_FULL; 586 break; 587 588 default: 589 BUG(); 590 } 591 592 return 0; 593 594 out_of_range: 595 return inval_plog(&log, "%s out of range", param->key); 596 } 597 EXPORT_SYMBOL(ceph_parse_param); 598 599 int ceph_print_client_options(struct seq_file *m, struct ceph_client *client, 600 bool show_all) 601 { 602 struct ceph_options *opt = client->options; 603 size_t pos = m->count; 604 struct rb_node *n; 605 606 if (opt->name) { 607 seq_puts(m, "name="); 608 seq_escape(m, opt->name, ", \t\n\\"); 609 seq_putc(m, ','); 610 } 611 if (opt->key) 612 seq_puts(m, "secret=<hidden>,"); 613 614 if (!RB_EMPTY_ROOT(&opt->crush_locs)) { 615 seq_puts(m, "crush_location="); 616 for (n = rb_first(&opt->crush_locs); ; ) { 617 struct crush_loc_node *loc = 618 rb_entry(n, struct crush_loc_node, cl_node); 619 620 seq_printf(m, "%s:%s", loc->cl_loc.cl_type_name, 621 loc->cl_loc.cl_name); 622 n = rb_next(n); 623 if (!n) 624 break; 625 626 seq_putc(m, '|'); 627 } 628 seq_putc(m, ','); 629 } 630 if (opt->read_from_replica == CEPH_OSD_FLAG_BALANCE_READS) { 631 seq_puts(m, "read_from_replica=balance,"); 632 } else if (opt->read_from_replica == CEPH_OSD_FLAG_LOCALIZE_READS) { 633 seq_puts(m, "read_from_replica=localize,"); 634 } 635 if (opt->con_modes[0] != CEPH_CON_MODE_UNKNOWN) { 636 if (opt->con_modes[0] == CEPH_CON_MODE_CRC && 637 opt->con_modes[1] == CEPH_CON_MODE_UNKNOWN) { 638 seq_puts(m, "ms_mode=crc,"); 639 } else if (opt->con_modes[0] == CEPH_CON_MODE_SECURE && 640 opt->con_modes[1] == CEPH_CON_MODE_UNKNOWN) { 641 seq_puts(m, "ms_mode=secure,"); 642 } else if (opt->con_modes[0] == CEPH_CON_MODE_CRC && 643 opt->con_modes[1] == CEPH_CON_MODE_SECURE) { 644 seq_puts(m, "ms_mode=prefer-crc,"); 645 } else if (opt->con_modes[0] == CEPH_CON_MODE_SECURE && 646 opt->con_modes[1] == CEPH_CON_MODE_CRC) { 647 seq_puts(m, "ms_mode=prefer-secure,"); 648 } 649 } 650 651 if (opt->flags & CEPH_OPT_FSID) 652 seq_printf(m, "fsid=%pU,", &opt->fsid); 653 if (opt->flags & CEPH_OPT_NOSHARE) 654 seq_puts(m, "noshare,"); 655 if (opt->flags & CEPH_OPT_NOCRC) 656 seq_puts(m, "nocrc,"); 657 if (opt->flags & CEPH_OPT_NOMSGSIGN) 658 seq_puts(m, "nocephx_sign_messages,"); 659 if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0) 660 seq_puts(m, "notcp_nodelay,"); 661 if (show_all && (opt->flags & CEPH_OPT_ABORT_ON_FULL)) 662 seq_puts(m, "abort_on_full,"); 663 664 if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT) 665 seq_printf(m, "mount_timeout=%d,", 666 jiffies_to_msecs(opt->mount_timeout) / 1000); 667 if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT) 668 seq_printf(m, "osd_idle_ttl=%d,", 669 jiffies_to_msecs(opt->osd_idle_ttl) / 1000); 670 if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT) 671 seq_printf(m, "osdkeepalivetimeout=%d,", 672 jiffies_to_msecs(opt->osd_keepalive_timeout) / 1000); 673 if (opt->osd_request_timeout != CEPH_OSD_REQUEST_TIMEOUT_DEFAULT) 674 seq_printf(m, "osd_request_timeout=%d,", 675 jiffies_to_msecs(opt->osd_request_timeout) / 1000); 676 677 /* drop redundant comma */ 678 if (m->count != pos) 679 m->count--; 680 681 return 0; 682 } 683 EXPORT_SYMBOL(ceph_print_client_options); 684 685 struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client) 686 { 687 return &client->msgr.inst.addr; 688 } 689 EXPORT_SYMBOL(ceph_client_addr); 690 691 u64 ceph_client_gid(struct ceph_client *client) 692 { 693 return client->monc.auth->global_id; 694 } 695 EXPORT_SYMBOL(ceph_client_gid); 696 697 /* 698 * create a fresh client instance 699 */ 700 struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private) 701 { 702 struct ceph_client *client; 703 struct ceph_entity_addr *myaddr = NULL; 704 int err; 705 706 err = wait_for_random_bytes(); 707 if (err < 0) 708 return ERR_PTR(err); 709 710 client = kzalloc(sizeof(*client), GFP_KERNEL); 711 if (client == NULL) 712 return ERR_PTR(-ENOMEM); 713 714 client->private = private; 715 client->options = opt; 716 717 mutex_init(&client->mount_mutex); 718 init_waitqueue_head(&client->auth_wq); 719 client->auth_err = 0; 720 721 client->extra_mon_dispatch = NULL; 722 client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT; 723 client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT; 724 725 if (!ceph_test_opt(client, NOMSGSIGN)) 726 client->required_features |= CEPH_FEATURE_MSG_AUTH; 727 728 /* msgr */ 729 if (ceph_test_opt(client, MYIP)) 730 myaddr = &client->options->my_addr; 731 732 ceph_messenger_init(&client->msgr, myaddr); 733 734 /* subsystems */ 735 err = ceph_monc_init(&client->monc, client); 736 if (err < 0) 737 goto fail; 738 err = ceph_osdc_init(&client->osdc, client); 739 if (err < 0) 740 goto fail_monc; 741 742 return client; 743 744 fail_monc: 745 ceph_monc_stop(&client->monc); 746 fail: 747 ceph_messenger_fini(&client->msgr); 748 kfree(client); 749 return ERR_PTR(err); 750 } 751 EXPORT_SYMBOL(ceph_create_client); 752 753 void ceph_destroy_client(struct ceph_client *client) 754 { 755 dout("destroy_client %p\n", client); 756 757 atomic_set(&client->msgr.stopping, 1); 758 759 /* unmount */ 760 ceph_osdc_stop(&client->osdc); 761 ceph_monc_stop(&client->monc); 762 ceph_messenger_fini(&client->msgr); 763 764 ceph_debugfs_client_cleanup(client); 765 766 ceph_destroy_options(client->options); 767 768 kfree(client); 769 dout("destroy_client %p done\n", client); 770 } 771 EXPORT_SYMBOL(ceph_destroy_client); 772 773 void ceph_reset_client_addr(struct ceph_client *client) 774 { 775 ceph_messenger_reset_nonce(&client->msgr); 776 ceph_monc_reopen_session(&client->monc); 777 ceph_osdc_reopen_osds(&client->osdc); 778 } 779 EXPORT_SYMBOL(ceph_reset_client_addr); 780 781 /* 782 * true if we have the mon map (and have thus joined the cluster) 783 */ 784 static bool have_mon_and_osd_map(struct ceph_client *client) 785 { 786 return client->monc.monmap && client->monc.monmap->epoch && 787 client->osdc.osdmap && client->osdc.osdmap->epoch; 788 } 789 790 /* 791 * mount: join the ceph cluster, and open root directory. 792 */ 793 int __ceph_open_session(struct ceph_client *client, unsigned long started) 794 { 795 unsigned long timeout = client->options->mount_timeout; 796 long err; 797 798 /* open session, and wait for mon and osd maps */ 799 err = ceph_monc_open_session(&client->monc); 800 if (err < 0) 801 return err; 802 803 while (!have_mon_and_osd_map(client)) { 804 if (timeout && time_after_eq(jiffies, started + timeout)) 805 return -ETIMEDOUT; 806 807 /* wait */ 808 dout("mount waiting for mon_map\n"); 809 err = wait_event_interruptible_timeout(client->auth_wq, 810 have_mon_and_osd_map(client) || (client->auth_err < 0), 811 ceph_timeout_jiffies(timeout)); 812 if (err < 0) 813 return err; 814 if (client->auth_err < 0) 815 return client->auth_err; 816 } 817 818 pr_info("client%llu fsid %pU\n", ceph_client_gid(client), 819 &client->fsid); 820 ceph_debugfs_client_init(client); 821 822 return 0; 823 } 824 EXPORT_SYMBOL(__ceph_open_session); 825 826 int ceph_open_session(struct ceph_client *client) 827 { 828 int ret; 829 unsigned long started = jiffies; /* note the start time */ 830 831 dout("open_session start\n"); 832 mutex_lock(&client->mount_mutex); 833 834 ret = __ceph_open_session(client, started); 835 836 mutex_unlock(&client->mount_mutex); 837 return ret; 838 } 839 EXPORT_SYMBOL(ceph_open_session); 840 841 int ceph_wait_for_latest_osdmap(struct ceph_client *client, 842 unsigned long timeout) 843 { 844 u64 newest_epoch; 845 int ret; 846 847 ret = ceph_monc_get_version(&client->monc, "osdmap", &newest_epoch); 848 if (ret) 849 return ret; 850 851 if (client->osdc.osdmap->epoch >= newest_epoch) 852 return 0; 853 854 ceph_osdc_maybe_request_map(&client->osdc); 855 return ceph_monc_wait_osdmap(&client->monc, newest_epoch, timeout); 856 } 857 EXPORT_SYMBOL(ceph_wait_for_latest_osdmap); 858 859 static int __init init_ceph_lib(void) 860 { 861 int ret = 0; 862 863 ceph_debugfs_init(); 864 865 ret = ceph_crypto_init(); 866 if (ret < 0) 867 goto out_debugfs; 868 869 ret = ceph_msgr_init(); 870 if (ret < 0) 871 goto out_crypto; 872 873 ret = ceph_osdc_setup(); 874 if (ret < 0) 875 goto out_msgr; 876 877 pr_info("loaded (mon/osd proto %d/%d)\n", 878 CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL); 879 880 return 0; 881 882 out_msgr: 883 ceph_msgr_exit(); 884 out_crypto: 885 ceph_crypto_shutdown(); 886 out_debugfs: 887 ceph_debugfs_cleanup(); 888 return ret; 889 } 890 891 static void __exit exit_ceph_lib(void) 892 { 893 dout("exit_ceph_lib\n"); 894 WARN_ON(!ceph_strings_empty()); 895 896 ceph_osdc_cleanup(); 897 ceph_msgr_exit(); 898 ceph_crypto_shutdown(); 899 ceph_debugfs_cleanup(); 900 } 901 902 module_init(init_ceph_lib); 903 module_exit(exit_ceph_lib); 904 905 MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); 906 MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); 907 MODULE_AUTHOR("Patience Warnick <patience@newdream.net>"); 908 MODULE_DESCRIPTION("Ceph core library"); 909 MODULE_LICENSE("GPL"); 910