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 */ 44bool libceph_compatible(void *data) 45{ 46 return true; 47} 48EXPORT_SYMBOL(libceph_compatible); 49 50static 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} 55static const struct kernel_param_ops param_ops_supported_features = { 56 .get = param_get_supported_features, 57}; 58module_param_cb(supported_features, ¶m_ops_supported_features, NULL, 59 0444); 60 61const 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} 100EXPORT_SYMBOL(ceph_msg_type_name); 101 102/* 103 * Initially learn our fsid, or verify an fsid matches. 104 */ 105int 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} 118EXPORT_SYMBOL(ceph_check_fsid); 119 120static 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 131int 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} 191EXPORT_SYMBOL(ceph_compare_options); 192 193int ceph_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("%s '%s'\n", __func__, 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("%s ret %d got fsid %pU\n", __func__, err, fsid); 221 return err; 222} 223EXPORT_SYMBOL(ceph_parse_fsid); 224 225/* 226 * ceph options 227 */ 228enum { 229 Opt_osdkeepalivetimeout, 230 Opt_mount_timeout, 231 Opt_osd_idle_ttl, 232 Opt_osd_request_timeout, 233 /* int args above */ 234 Opt_fsid, 235 Opt_name, 236 Opt_secret, 237 Opt_key, 238 Opt_ip, 239 Opt_crush_location, 240 Opt_read_from_replica, 241 Opt_ms_mode, 242 /* string args above */ 243 Opt_share, 244 Opt_crc, 245 Opt_cephx_require_signatures, 246 Opt_cephx_sign_messages, 247 Opt_tcp_nodelay, 248 Opt_abort_on_full, 249 Opt_rxbounce, 250}; 251 252enum { 253 Opt_read_from_replica_no, 254 Opt_read_from_replica_balance, 255 Opt_read_from_replica_localize, 256}; 257 258static const struct constant_table ceph_param_read_from_replica[] = { 259 {"no", Opt_read_from_replica_no}, 260 {"balance", Opt_read_from_replica_balance}, 261 {"localize", Opt_read_from_replica_localize}, 262 {} 263}; 264 265enum ceph_ms_mode { 266 Opt_ms_mode_legacy, 267 Opt_ms_mode_crc, 268 Opt_ms_mode_secure, 269 Opt_ms_mode_prefer_crc, 270 Opt_ms_mode_prefer_secure 271}; 272 273static const struct constant_table ceph_param_ms_mode[] = { 274 {"legacy", Opt_ms_mode_legacy}, 275 {"crc", Opt_ms_mode_crc}, 276 {"secure", Opt_ms_mode_secure}, 277 {"prefer-crc", Opt_ms_mode_prefer_crc}, 278 {"prefer-secure", Opt_ms_mode_prefer_secure}, 279 {} 280}; 281 282static const struct fs_parameter_spec ceph_parameters[] = { 283 fsparam_flag ("abort_on_full", Opt_abort_on_full), 284 __fsparam (NULL, "cephx_require_signatures", Opt_cephx_require_signatures, 285 fs_param_neg_with_no|fs_param_deprecated, NULL), 286 fsparam_flag_no ("cephx_sign_messages", Opt_cephx_sign_messages), 287 fsparam_flag_no ("crc", Opt_crc), 288 fsparam_string ("crush_location", Opt_crush_location), 289 fsparam_string ("fsid", Opt_fsid), 290 fsparam_string ("ip", Opt_ip), 291 fsparam_string ("key", Opt_key), 292 fsparam_u32 ("mount_timeout", Opt_mount_timeout), 293 fsparam_string ("name", Opt_name), 294 fsparam_u32 ("osd_idle_ttl", Opt_osd_idle_ttl), 295 fsparam_u32 ("osd_request_timeout", Opt_osd_request_timeout), 296 fsparam_u32 ("osdkeepalive", Opt_osdkeepalivetimeout), 297 fsparam_enum ("read_from_replica", Opt_read_from_replica, 298 ceph_param_read_from_replica), 299 fsparam_flag ("rxbounce", Opt_rxbounce), 300 fsparam_enum ("ms_mode", Opt_ms_mode, 301 ceph_param_ms_mode), 302 fsparam_string ("secret", Opt_secret), 303 fsparam_flag_no ("share", Opt_share), 304 fsparam_flag_no ("tcp_nodelay", Opt_tcp_nodelay), 305 {} 306}; 307 308struct ceph_options *ceph_alloc_options(void) 309{ 310 struct ceph_options *opt; 311 312 opt = kzalloc(sizeof(*opt), GFP_KERNEL); 313 if (!opt) 314 return NULL; 315 316 opt->crush_locs = RB_ROOT; 317 opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr), 318 GFP_KERNEL); 319 if (!opt->mon_addr) { 320 kfree(opt); 321 return NULL; 322 } 323 324 opt->flags = CEPH_OPT_DEFAULT; 325 opt->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT; 326 opt->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; 327 opt->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; 328 opt->osd_request_timeout = CEPH_OSD_REQUEST_TIMEOUT_DEFAULT; 329 opt->read_from_replica = CEPH_READ_FROM_REPLICA_DEFAULT; 330 opt->con_modes[0] = CEPH_CON_MODE_UNKNOWN; 331 opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN; 332 return opt; 333} 334EXPORT_SYMBOL(ceph_alloc_options); 335 336void ceph_destroy_options(struct ceph_options *opt) 337{ 338 dout("destroy_options %p\n", opt); 339 if (!opt) 340 return; 341 342 ceph_clear_crush_locs(&opt->crush_locs); 343 kfree(opt->name); 344 if (opt->key) { 345 ceph_crypto_key_destroy(opt->key); 346 kfree(opt->key); 347 } 348 kfree(opt->mon_addr); 349 kfree(opt); 350} 351EXPORT_SYMBOL(ceph_destroy_options); 352 353/* get secret from key store */ 354static int get_secret(struct ceph_crypto_key *dst, const char *name, 355 struct p_log *log) 356{ 357 struct key *ukey; 358 int key_err; 359 int err = 0; 360 struct ceph_crypto_key *ckey; 361 362 ukey = request_key(&key_type_ceph, name, NULL); 363 if (IS_ERR(ukey)) { 364 /* request_key errors don't map nicely to mount(2) 365 errors; don't even try, but still printk */ 366 key_err = PTR_ERR(ukey); 367 switch (key_err) { 368 case -ENOKEY: 369 error_plog(log, "Failed due to key not found: %s", 370 name); 371 break; 372 case -EKEYEXPIRED: 373 error_plog(log, "Failed due to expired key: %s", 374 name); 375 break; 376 case -EKEYREVOKED: 377 error_plog(log, "Failed due to revoked key: %s", 378 name); 379 break; 380 default: 381 error_plog(log, "Failed due to key error %d: %s", 382 key_err, name); 383 } 384 err = -EPERM; 385 goto out; 386 } 387 388 ckey = ukey->payload.data[0]; 389 err = ceph_crypto_key_clone(dst, ckey); 390 if (err) 391 goto out_key; 392 /* pass through, err is 0 */ 393 394out_key: 395 key_put(ukey); 396out: 397 return err; 398} 399 400int ceph_parse_mon_ips(const char *buf, size_t len, struct ceph_options *opt, 401 struct fc_log *l, char delim) 402{ 403 struct p_log log = {.prefix = "libceph", .log = l}; 404 int ret; 405 406 /* ip1[:port1][<delim>ip2[:port2]...] */ 407 ret = ceph_parse_ips(buf, buf + len, opt->mon_addr, CEPH_MAX_MON, 408 &opt->num_mon, delim); 409 if (ret) { 410 error_plog(&log, "Failed to parse monitor IPs: %d", ret); 411 return ret; 412 } 413 414 return 0; 415} 416EXPORT_SYMBOL(ceph_parse_mon_ips); 417 418int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt, 419 struct fc_log *l) 420{ 421 struct fs_parse_result result; 422 int token, err; 423 struct p_log log = {.prefix = "libceph", .log = l}; 424 425 token = __fs_parse(&log, ceph_parameters, param, &result); 426 dout("%s fs_parse '%s' token %d\n", __func__, param->key, token); 427 if (token < 0) 428 return token; 429 430 switch (token) { 431 case Opt_ip: 432 err = ceph_parse_ips(param->string, 433 param->string + param->size, 434 &opt->my_addr, 1, NULL, ','); 435 if (err) { 436 error_plog(&log, "Failed to parse ip: %d", err); 437 return err; 438 } 439 opt->flags |= CEPH_OPT_MYIP; 440 break; 441 442 case Opt_fsid: 443 err = ceph_parse_fsid(param->string, &opt->fsid); 444 if (err) { 445 error_plog(&log, "Failed to parse fsid: %d", err); 446 return err; 447 } 448 opt->flags |= CEPH_OPT_FSID; 449 break; 450 case Opt_name: 451 kfree(opt->name); 452 opt->name = param->string; 453 param->string = NULL; 454 break; 455 case Opt_secret: 456 ceph_crypto_key_destroy(opt->key); 457 kfree(opt->key); 458 459 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); 460 if (!opt->key) 461 return -ENOMEM; 462 err = ceph_crypto_key_unarmor(opt->key, param->string); 463 if (err) { 464 error_plog(&log, "Failed to parse secret: %d", err); 465 return err; 466 } 467 break; 468 case Opt_key: 469 ceph_crypto_key_destroy(opt->key); 470 kfree(opt->key); 471 472 opt->key = kzalloc(sizeof(*opt->key), GFP_KERNEL); 473 if (!opt->key) 474 return -ENOMEM; 475 return get_secret(opt->key, param->string, &log); 476 case Opt_crush_location: 477 ceph_clear_crush_locs(&opt->crush_locs); 478 err = ceph_parse_crush_location(param->string, 479 &opt->crush_locs); 480 if (err) { 481 error_plog(&log, "Failed to parse CRUSH location: %d", 482 err); 483 return err; 484 } 485 break; 486 case Opt_read_from_replica: 487 switch (result.uint_32) { 488 case Opt_read_from_replica_no: 489 opt->read_from_replica = 0; 490 break; 491 case Opt_read_from_replica_balance: 492 opt->read_from_replica = CEPH_OSD_FLAG_BALANCE_READS; 493 break; 494 case Opt_read_from_replica_localize: 495 opt->read_from_replica = CEPH_OSD_FLAG_LOCALIZE_READS; 496 break; 497 default: 498 BUG(); 499 } 500 break; 501 case Opt_ms_mode: 502 switch (result.uint_32) { 503 case Opt_ms_mode_legacy: 504 opt->con_modes[0] = CEPH_CON_MODE_UNKNOWN; 505 opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN; 506 break; 507 case Opt_ms_mode_crc: 508 opt->con_modes[0] = CEPH_CON_MODE_CRC; 509 opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN; 510 break; 511 case Opt_ms_mode_secure: 512 opt->con_modes[0] = CEPH_CON_MODE_SECURE; 513 opt->con_modes[1] = CEPH_CON_MODE_UNKNOWN; 514 break; 515 case Opt_ms_mode_prefer_crc: 516 opt->con_modes[0] = CEPH_CON_MODE_CRC; 517 opt->con_modes[1] = CEPH_CON_MODE_SECURE; 518 break; 519 case Opt_ms_mode_prefer_secure: 520 opt->con_modes[0] = CEPH_CON_MODE_SECURE; 521 opt->con_modes[1] = CEPH_CON_MODE_CRC; 522 break; 523 default: 524 BUG(); 525 } 526 break; 527 528 case Opt_osdkeepalivetimeout: 529 /* 0 isn't well defined right now, reject it */ 530 if (result.uint_32 < 1 || result.uint_32 > INT_MAX / 1000) 531 goto out_of_range; 532 opt->osd_keepalive_timeout = 533 msecs_to_jiffies(result.uint_32 * 1000); 534 break; 535 case Opt_osd_idle_ttl: 536 /* 0 isn't well defined right now, reject it */ 537 if (result.uint_32 < 1 || result.uint_32 > INT_MAX / 1000) 538 goto out_of_range; 539 opt->osd_idle_ttl = msecs_to_jiffies(result.uint_32 * 1000); 540 break; 541 case Opt_mount_timeout: 542 /* 0 is "wait forever" (i.e. infinite timeout) */ 543 if (result.uint_32 > INT_MAX / 1000) 544 goto out_of_range; 545 opt->mount_timeout = msecs_to_jiffies(result.uint_32 * 1000); 546 break; 547 case Opt_osd_request_timeout: 548 /* 0 is "wait forever" (i.e. infinite timeout) */ 549 if (result.uint_32 > INT_MAX / 1000) 550 goto out_of_range; 551 opt->osd_request_timeout = 552 msecs_to_jiffies(result.uint_32 * 1000); 553 break; 554 555 case Opt_share: 556 if (!result.negated) 557 opt->flags &= ~CEPH_OPT_NOSHARE; 558 else 559 opt->flags |= CEPH_OPT_NOSHARE; 560 break; 561 case Opt_crc: 562 if (!result.negated) 563 opt->flags &= ~CEPH_OPT_NOCRC; 564 else 565 opt->flags |= CEPH_OPT_NOCRC; 566 break; 567 case Opt_cephx_require_signatures: 568 if (!result.negated) 569 warn_plog(&log, "Ignoring cephx_require_signatures"); 570 else 571 warn_plog(&log, "Ignoring nocephx_require_signatures, use nocephx_sign_messages"); 572 break; 573 case Opt_cephx_sign_messages: 574 if (!result.negated) 575 opt->flags &= ~CEPH_OPT_NOMSGSIGN; 576 else 577 opt->flags |= CEPH_OPT_NOMSGSIGN; 578 break; 579 case Opt_tcp_nodelay: 580 if (!result.negated) 581 opt->flags |= CEPH_OPT_TCP_NODELAY; 582 else 583 opt->flags &= ~CEPH_OPT_TCP_NODELAY; 584 break; 585 586 case Opt_abort_on_full: 587 opt->flags |= CEPH_OPT_ABORT_ON_FULL; 588 break; 589 case Opt_rxbounce: 590 opt->flags |= CEPH_OPT_RXBOUNCE; 591 break; 592 593 default: 594 BUG(); 595 } 596 597 return 0; 598 599out_of_range: 600 return inval_plog(&log, "%s out of range", param->key); 601} 602EXPORT_SYMBOL(ceph_parse_param); 603 604int ceph_print_client_options(struct seq_file *m, struct ceph_client *client, 605 bool show_all) 606{ 607 struct ceph_options *opt = client->options; 608 size_t pos = m->count; 609 struct rb_node *n; 610 611 if (opt->name) { 612 seq_puts(m, "name="); 613 seq_escape(m, opt->name, ", \t\n\\"); 614 seq_putc(m, ','); 615 } 616 if (opt->key) 617 seq_puts(m, "secret=<hidden>,"); 618 619 if (!RB_EMPTY_ROOT(&opt->crush_locs)) { 620 seq_puts(m, "crush_location="); 621 for (n = rb_first(&opt->crush_locs); ; ) { 622 struct crush_loc_node *loc = 623 rb_entry(n, struct crush_loc_node, cl_node); 624 625 seq_printf(m, "%s:%s", loc->cl_loc.cl_type_name, 626 loc->cl_loc.cl_name); 627 n = rb_next(n); 628 if (!n) 629 break; 630 631 seq_putc(m, '|'); 632 } 633 seq_putc(m, ','); 634 } 635 if (opt->read_from_replica == CEPH_OSD_FLAG_BALANCE_READS) { 636 seq_puts(m, "read_from_replica=balance,"); 637 } else if (opt->read_from_replica == CEPH_OSD_FLAG_LOCALIZE_READS) { 638 seq_puts(m, "read_from_replica=localize,"); 639 } 640 if (opt->con_modes[0] != CEPH_CON_MODE_UNKNOWN) { 641 if (opt->con_modes[0] == CEPH_CON_MODE_CRC && 642 opt->con_modes[1] == CEPH_CON_MODE_UNKNOWN) { 643 seq_puts(m, "ms_mode=crc,"); 644 } else if (opt->con_modes[0] == CEPH_CON_MODE_SECURE && 645 opt->con_modes[1] == CEPH_CON_MODE_UNKNOWN) { 646 seq_puts(m, "ms_mode=secure,"); 647 } else if (opt->con_modes[0] == CEPH_CON_MODE_CRC && 648 opt->con_modes[1] == CEPH_CON_MODE_SECURE) { 649 seq_puts(m, "ms_mode=prefer-crc,"); 650 } else if (opt->con_modes[0] == CEPH_CON_MODE_SECURE && 651 opt->con_modes[1] == CEPH_CON_MODE_CRC) { 652 seq_puts(m, "ms_mode=prefer-secure,"); 653 } 654 } 655 656 if (opt->flags & CEPH_OPT_FSID) 657 seq_printf(m, "fsid=%pU,", &opt->fsid); 658 if (opt->flags & CEPH_OPT_NOSHARE) 659 seq_puts(m, "noshare,"); 660 if (opt->flags & CEPH_OPT_NOCRC) 661 seq_puts(m, "nocrc,"); 662 if (opt->flags & CEPH_OPT_NOMSGSIGN) 663 seq_puts(m, "nocephx_sign_messages,"); 664 if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0) 665 seq_puts(m, "notcp_nodelay,"); 666 if (show_all && (opt->flags & CEPH_OPT_ABORT_ON_FULL)) 667 seq_puts(m, "abort_on_full,"); 668 if (opt->flags & CEPH_OPT_RXBOUNCE) 669 seq_puts(m, "rxbounce,"); 670 671 if (opt->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT) 672 seq_printf(m, "mount_timeout=%d,", 673 jiffies_to_msecs(opt->mount_timeout) / 1000); 674 if (opt->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT) 675 seq_printf(m, "osd_idle_ttl=%d,", 676 jiffies_to_msecs(opt->osd_idle_ttl) / 1000); 677 if (opt->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT) 678 seq_printf(m, "osdkeepalivetimeout=%d,", 679 jiffies_to_msecs(opt->osd_keepalive_timeout) / 1000); 680 if (opt->osd_request_timeout != CEPH_OSD_REQUEST_TIMEOUT_DEFAULT) 681 seq_printf(m, "osd_request_timeout=%d,", 682 jiffies_to_msecs(opt->osd_request_timeout) / 1000); 683 684 /* drop redundant comma */ 685 if (m->count != pos) 686 m->count--; 687 688 return 0; 689} 690EXPORT_SYMBOL(ceph_print_client_options); 691 692struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client) 693{ 694 return &client->msgr.inst.addr; 695} 696EXPORT_SYMBOL(ceph_client_addr); 697 698u64 ceph_client_gid(struct ceph_client *client) 699{ 700 return client->monc.auth->global_id; 701} 702EXPORT_SYMBOL(ceph_client_gid); 703 704/* 705 * create a fresh client instance 706 */ 707struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private) 708{ 709 struct ceph_client *client; 710 struct ceph_entity_addr *myaddr = NULL; 711 int err; 712 713 err = wait_for_random_bytes(); 714 if (err < 0) 715 return ERR_PTR(err); 716 717 client = kzalloc(sizeof(*client), GFP_KERNEL); 718 if (client == NULL) 719 return ERR_PTR(-ENOMEM); 720 721 client->private = private; 722 client->options = opt; 723 724 mutex_init(&client->mount_mutex); 725 init_waitqueue_head(&client->auth_wq); 726 client->auth_err = 0; 727 728 client->extra_mon_dispatch = NULL; 729 client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT; 730 client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT; 731 732 if (!ceph_test_opt(client, NOMSGSIGN)) 733 client->required_features |= CEPH_FEATURE_MSG_AUTH; 734 735 /* msgr */ 736 if (ceph_test_opt(client, MYIP)) 737 myaddr = &client->options->my_addr; 738 739 ceph_messenger_init(&client->msgr, myaddr); 740 741 /* subsystems */ 742 err = ceph_monc_init(&client->monc, client); 743 if (err < 0) 744 goto fail; 745 err = ceph_osdc_init(&client->osdc, client); 746 if (err < 0) 747 goto fail_monc; 748 749 return client; 750 751fail_monc: 752 ceph_monc_stop(&client->monc); 753fail: 754 ceph_messenger_fini(&client->msgr); 755 kfree(client); 756 return ERR_PTR(err); 757} 758EXPORT_SYMBOL(ceph_create_client); 759 760void ceph_destroy_client(struct ceph_client *client) 761{ 762 dout("destroy_client %p\n", client); 763 764 atomic_set(&client->msgr.stopping, 1); 765 766 /* unmount */ 767 ceph_osdc_stop(&client->osdc); 768 ceph_monc_stop(&client->monc); 769 ceph_messenger_fini(&client->msgr); 770 771 ceph_debugfs_client_cleanup(client); 772 773 ceph_destroy_options(client->options); 774 775 kfree(client); 776 dout("destroy_client %p done\n", client); 777} 778EXPORT_SYMBOL(ceph_destroy_client); 779 780void ceph_reset_client_addr(struct ceph_client *client) 781{ 782 ceph_messenger_reset_nonce(&client->msgr); 783 ceph_monc_reopen_session(&client->monc); 784 ceph_osdc_reopen_osds(&client->osdc); 785} 786EXPORT_SYMBOL(ceph_reset_client_addr); 787 788/* 789 * true if we have the mon map (and have thus joined the cluster) 790 */ 791static bool have_mon_and_osd_map(struct ceph_client *client) 792{ 793 return client->monc.monmap && client->monc.monmap->epoch && 794 client->osdc.osdmap && client->osdc.osdmap->epoch; 795} 796 797/* 798 * mount: join the ceph cluster, and open root directory. 799 */ 800int __ceph_open_session(struct ceph_client *client, unsigned long started) 801{ 802 unsigned long timeout = client->options->mount_timeout; 803 long err; 804 805 /* open session, and wait for mon and osd maps */ 806 err = ceph_monc_open_session(&client->monc); 807 if (err < 0) 808 return err; 809 810 while (!have_mon_and_osd_map(client)) { 811 if (timeout && time_after_eq(jiffies, started + timeout)) 812 return -ETIMEDOUT; 813 814 /* wait */ 815 dout("mount waiting for mon_map\n"); 816 err = wait_event_interruptible_timeout(client->auth_wq, 817 have_mon_and_osd_map(client) || (client->auth_err < 0), 818 ceph_timeout_jiffies(timeout)); 819 if (err < 0) 820 return err; 821 if (client->auth_err < 0) 822 return client->auth_err; 823 } 824 825 pr_info("client%llu fsid %pU\n", ceph_client_gid(client), 826 &client->fsid); 827 ceph_debugfs_client_init(client); 828 829 return 0; 830} 831EXPORT_SYMBOL(__ceph_open_session); 832 833int ceph_open_session(struct ceph_client *client) 834{ 835 int ret; 836 unsigned long started = jiffies; /* note the start time */ 837 838 dout("open_session start\n"); 839 mutex_lock(&client->mount_mutex); 840 841 ret = __ceph_open_session(client, started); 842 843 mutex_unlock(&client->mount_mutex); 844 return ret; 845} 846EXPORT_SYMBOL(ceph_open_session); 847 848int ceph_wait_for_latest_osdmap(struct ceph_client *client, 849 unsigned long timeout) 850{ 851 u64 newest_epoch; 852 int ret; 853 854 ret = ceph_monc_get_version(&client->monc, "osdmap", &newest_epoch); 855 if (ret) 856 return ret; 857 858 if (client->osdc.osdmap->epoch >= newest_epoch) 859 return 0; 860 861 ceph_osdc_maybe_request_map(&client->osdc); 862 return ceph_monc_wait_osdmap(&client->monc, newest_epoch, timeout); 863} 864EXPORT_SYMBOL(ceph_wait_for_latest_osdmap); 865 866static int __init init_ceph_lib(void) 867{ 868 int ret = 0; 869 870 ceph_debugfs_init(); 871 872 ret = ceph_crypto_init(); 873 if (ret < 0) 874 goto out_debugfs; 875 876 ret = ceph_msgr_init(); 877 if (ret < 0) 878 goto out_crypto; 879 880 ret = ceph_osdc_setup(); 881 if (ret < 0) 882 goto out_msgr; 883 884 pr_info("loaded (mon/osd proto %d/%d)\n", 885 CEPH_MONC_PROTOCOL, CEPH_OSDC_PROTOCOL); 886 887 return 0; 888 889out_msgr: 890 ceph_msgr_exit(); 891out_crypto: 892 ceph_crypto_shutdown(); 893out_debugfs: 894 ceph_debugfs_cleanup(); 895 return ret; 896} 897 898static void __exit exit_ceph_lib(void) 899{ 900 dout("exit_ceph_lib\n"); 901 WARN_ON(!ceph_strings_empty()); 902 903 ceph_osdc_cleanup(); 904 ceph_msgr_exit(); 905 ceph_crypto_shutdown(); 906 ceph_debugfs_cleanup(); 907} 908 909module_init(init_ceph_lib); 910module_exit(exit_ceph_lib); 911 912MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); 913MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); 914MODULE_AUTHOR("Patience Warnick <patience@newdream.net>"); 915MODULE_DESCRIPTION("Ceph core library"); 916MODULE_LICENSE("GPL"); 917