1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * 6 * This software was developed by Edward Tomasz Napierala under sponsorship 7 * from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/types.h> 36 #include <sys/time.h> 37 #include <sys/socket.h> 38 #include <sys/stat.h> 39 #include <sys/wait.h> 40 #include <netinet/in.h> 41 #include <arpa/inet.h> 42 #include <assert.h> 43 #include <ctype.h> 44 #include <errno.h> 45 #include <netdb.h> 46 #include <signal.h> 47 #include <stdbool.h> 48 #include <stdio.h> 49 #include <stdint.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <unistd.h> 53 54 #include "ctld.h" 55 #include "isns.h" 56 57 static bool timed_out(void); 58 #ifdef ICL_KERNEL_PROXY 59 static void pdu_receive_proxy(struct pdu *pdu); 60 static void pdu_send_proxy(struct pdu *pdu); 61 #endif /* ICL_KERNEL_PROXY */ 62 static void pdu_fail(const struct connection *conn, const char *reason); 63 64 bool proxy_mode = false; 65 66 static volatile bool sighup_received = false; 67 static volatile bool sigterm_received = false; 68 static volatile bool sigalrm_received = false; 69 70 static int nchildren = 0; 71 static uint16_t last_portal_group_tag = 0xff; 72 73 static struct connection_ops conn_ops = { 74 .timed_out = timed_out, 75 #ifdef ICL_KERNEL_PROXY 76 .pdu_receive_proxy = pdu_receive_proxy, 77 .pdu_send_proxy = pdu_send_proxy, 78 #endif 79 .fail = pdu_fail, 80 }; 81 82 static void 83 usage(void) 84 { 85 86 fprintf(stderr, "usage: ctld [-d][-u][-f config-file]\n"); 87 fprintf(stderr, " ctld -t [-u][-f config-file]\n"); 88 exit(1); 89 } 90 91 struct conf * 92 conf_new(void) 93 { 94 struct conf *conf; 95 96 conf = calloc(1, sizeof(*conf)); 97 if (conf == NULL) 98 log_err(1, "calloc"); 99 TAILQ_INIT(&conf->conf_luns); 100 TAILQ_INIT(&conf->conf_targets); 101 TAILQ_INIT(&conf->conf_auth_groups); 102 TAILQ_INIT(&conf->conf_ports); 103 TAILQ_INIT(&conf->conf_portal_groups); 104 TAILQ_INIT(&conf->conf_pports); 105 TAILQ_INIT(&conf->conf_isns); 106 107 conf->conf_isns_period = 900; 108 conf->conf_isns_timeout = 5; 109 conf->conf_debug = 0; 110 conf->conf_timeout = 60; 111 conf->conf_maxproc = 30; 112 113 return (conf); 114 } 115 116 void 117 conf_delete(struct conf *conf) 118 { 119 struct lun *lun, *ltmp; 120 struct target *targ, *tmp; 121 struct auth_group *ag, *cagtmp; 122 struct portal_group *pg, *cpgtmp; 123 struct pport *pp, *pptmp; 124 struct isns *is, *istmp; 125 126 assert(conf->conf_pidfh == NULL); 127 128 TAILQ_FOREACH_SAFE(lun, &conf->conf_luns, l_next, ltmp) 129 lun_delete(lun); 130 TAILQ_FOREACH_SAFE(targ, &conf->conf_targets, t_next, tmp) 131 target_delete(targ); 132 TAILQ_FOREACH_SAFE(ag, &conf->conf_auth_groups, ag_next, cagtmp) 133 auth_group_delete(ag); 134 TAILQ_FOREACH_SAFE(pg, &conf->conf_portal_groups, pg_next, cpgtmp) 135 portal_group_delete(pg); 136 TAILQ_FOREACH_SAFE(pp, &conf->conf_pports, pp_next, pptmp) 137 pport_delete(pp); 138 TAILQ_FOREACH_SAFE(is, &conf->conf_isns, i_next, istmp) 139 isns_delete(is); 140 assert(TAILQ_EMPTY(&conf->conf_ports)); 141 free(conf->conf_pidfile_path); 142 free(conf); 143 } 144 145 static struct auth * 146 auth_new(struct auth_group *ag) 147 { 148 struct auth *auth; 149 150 auth = calloc(1, sizeof(*auth)); 151 if (auth == NULL) 152 log_err(1, "calloc"); 153 auth->a_auth_group = ag; 154 TAILQ_INSERT_TAIL(&ag->ag_auths, auth, a_next); 155 return (auth); 156 } 157 158 static void 159 auth_delete(struct auth *auth) 160 { 161 TAILQ_REMOVE(&auth->a_auth_group->ag_auths, auth, a_next); 162 163 free(auth->a_user); 164 free(auth->a_secret); 165 free(auth->a_mutual_user); 166 free(auth->a_mutual_secret); 167 free(auth); 168 } 169 170 const struct auth * 171 auth_find(const struct auth_group *ag, const char *user) 172 { 173 const struct auth *auth; 174 175 TAILQ_FOREACH(auth, &ag->ag_auths, a_next) { 176 if (strcmp(auth->a_user, user) == 0) 177 return (auth); 178 } 179 180 return (NULL); 181 } 182 183 static void 184 auth_check_secret_length(struct auth *auth) 185 { 186 size_t len; 187 188 len = strlen(auth->a_secret); 189 if (len > 16) { 190 if (auth->a_auth_group->ag_name != NULL) 191 log_warnx("secret for user \"%s\", auth-group \"%s\", " 192 "is too long; it should be at most 16 characters " 193 "long", auth->a_user, auth->a_auth_group->ag_name); 194 else 195 log_warnx("secret for user \"%s\", target \"%s\", " 196 "is too long; it should be at most 16 characters " 197 "long", auth->a_user, 198 auth->a_auth_group->ag_target->t_name); 199 } 200 if (len < 12) { 201 if (auth->a_auth_group->ag_name != NULL) 202 log_warnx("secret for user \"%s\", auth-group \"%s\", " 203 "is too short; it should be at least 12 characters " 204 "long", auth->a_user, 205 auth->a_auth_group->ag_name); 206 else 207 log_warnx("secret for user \"%s\", target \"%s\", " 208 "is too short; it should be at least 12 characters " 209 "long", auth->a_user, 210 auth->a_auth_group->ag_target->t_name); 211 } 212 213 if (auth->a_mutual_secret != NULL) { 214 len = strlen(auth->a_mutual_secret); 215 if (len > 16) { 216 if (auth->a_auth_group->ag_name != NULL) 217 log_warnx("mutual secret for user \"%s\", " 218 "auth-group \"%s\", is too long; it should " 219 "be at most 16 characters long", 220 auth->a_user, auth->a_auth_group->ag_name); 221 else 222 log_warnx("mutual secret for user \"%s\", " 223 "target \"%s\", is too long; it should " 224 "be at most 16 characters long", 225 auth->a_user, 226 auth->a_auth_group->ag_target->t_name); 227 } 228 if (len < 12) { 229 if (auth->a_auth_group->ag_name != NULL) 230 log_warnx("mutual secret for user \"%s\", " 231 "auth-group \"%s\", is too short; it " 232 "should be at least 12 characters long", 233 auth->a_user, auth->a_auth_group->ag_name); 234 else 235 log_warnx("mutual secret for user \"%s\", " 236 "target \"%s\", is too short; it should be " 237 "at least 12 characters long", 238 auth->a_user, 239 auth->a_auth_group->ag_target->t_name); 240 } 241 } 242 } 243 244 const struct auth * 245 auth_new_chap(struct auth_group *ag, const char *user, 246 const char *secret) 247 { 248 struct auth *auth; 249 250 if (ag->ag_type == AG_TYPE_UNKNOWN) 251 ag->ag_type = AG_TYPE_CHAP; 252 if (ag->ag_type != AG_TYPE_CHAP) { 253 if (ag->ag_name != NULL) 254 log_warnx("cannot mix \"chap\" authentication with " 255 "other types for auth-group \"%s\"", ag->ag_name); 256 else 257 log_warnx("cannot mix \"chap\" authentication with " 258 "other types for target \"%s\"", 259 ag->ag_target->t_name); 260 return (NULL); 261 } 262 263 auth = auth_new(ag); 264 auth->a_user = checked_strdup(user); 265 auth->a_secret = checked_strdup(secret); 266 267 auth_check_secret_length(auth); 268 269 return (auth); 270 } 271 272 const struct auth * 273 auth_new_chap_mutual(struct auth_group *ag, const char *user, 274 const char *secret, const char *user2, const char *secret2) 275 { 276 struct auth *auth; 277 278 if (ag->ag_type == AG_TYPE_UNKNOWN) 279 ag->ag_type = AG_TYPE_CHAP_MUTUAL; 280 if (ag->ag_type != AG_TYPE_CHAP_MUTUAL) { 281 if (ag->ag_name != NULL) 282 log_warnx("cannot mix \"chap-mutual\" authentication " 283 "with other types for auth-group \"%s\"", 284 ag->ag_name); 285 else 286 log_warnx("cannot mix \"chap-mutual\" authentication " 287 "with other types for target \"%s\"", 288 ag->ag_target->t_name); 289 return (NULL); 290 } 291 292 auth = auth_new(ag); 293 auth->a_user = checked_strdup(user); 294 auth->a_secret = checked_strdup(secret); 295 auth->a_mutual_user = checked_strdup(user2); 296 auth->a_mutual_secret = checked_strdup(secret2); 297 298 auth_check_secret_length(auth); 299 300 return (auth); 301 } 302 303 const struct auth_name * 304 auth_name_new(struct auth_group *ag, const char *name) 305 { 306 struct auth_name *an; 307 308 an = calloc(1, sizeof(*an)); 309 if (an == NULL) 310 log_err(1, "calloc"); 311 an->an_auth_group = ag; 312 an->an_initiator_name = checked_strdup(name); 313 TAILQ_INSERT_TAIL(&ag->ag_names, an, an_next); 314 return (an); 315 } 316 317 static void 318 auth_name_delete(struct auth_name *an) 319 { 320 TAILQ_REMOVE(&an->an_auth_group->ag_names, an, an_next); 321 322 free(an->an_initiator_name); 323 free(an); 324 } 325 326 bool 327 auth_name_defined(const struct auth_group *ag) 328 { 329 if (TAILQ_EMPTY(&ag->ag_names)) 330 return (false); 331 return (true); 332 } 333 334 const struct auth_name * 335 auth_name_find(const struct auth_group *ag, const char *name) 336 { 337 const struct auth_name *auth_name; 338 339 TAILQ_FOREACH(auth_name, &ag->ag_names, an_next) { 340 if (strcmp(auth_name->an_initiator_name, name) == 0) 341 return (auth_name); 342 } 343 344 return (NULL); 345 } 346 347 int 348 auth_name_check(const struct auth_group *ag, const char *initiator_name) 349 { 350 if (!auth_name_defined(ag)) 351 return (0); 352 353 if (auth_name_find(ag, initiator_name) == NULL) 354 return (1); 355 356 return (0); 357 } 358 359 const struct auth_portal * 360 auth_portal_new(struct auth_group *ag, const char *portal) 361 { 362 struct auth_portal *ap; 363 char *net, *mask, *str, *tmp; 364 int len, dm, m; 365 366 ap = calloc(1, sizeof(*ap)); 367 if (ap == NULL) 368 log_err(1, "calloc"); 369 ap->ap_auth_group = ag; 370 ap->ap_initiator_portal = checked_strdup(portal); 371 mask = str = checked_strdup(portal); 372 net = strsep(&mask, "/"); 373 if (net[0] == '[') 374 net++; 375 len = strlen(net); 376 if (len == 0) 377 goto error; 378 if (net[len - 1] == ']') 379 net[len - 1] = 0; 380 if (strchr(net, ':') != NULL) { 381 struct sockaddr_in6 *sin6 = 382 (struct sockaddr_in6 *)&ap->ap_sa; 383 384 sin6->sin6_len = sizeof(*sin6); 385 sin6->sin6_family = AF_INET6; 386 if (inet_pton(AF_INET6, net, &sin6->sin6_addr) <= 0) 387 goto error; 388 dm = 128; 389 } else { 390 struct sockaddr_in *sin = 391 (struct sockaddr_in *)&ap->ap_sa; 392 393 sin->sin_len = sizeof(*sin); 394 sin->sin_family = AF_INET; 395 if (inet_pton(AF_INET, net, &sin->sin_addr) <= 0) 396 goto error; 397 dm = 32; 398 } 399 if (mask != NULL) { 400 m = strtol(mask, &tmp, 0); 401 if (m < 0 || m > dm || tmp[0] != 0) 402 goto error; 403 } else 404 m = dm; 405 ap->ap_mask = m; 406 free(str); 407 TAILQ_INSERT_TAIL(&ag->ag_portals, ap, ap_next); 408 return (ap); 409 410 error: 411 free(str); 412 free(ap); 413 log_warnx("incorrect initiator portal \"%s\"", portal); 414 return (NULL); 415 } 416 417 static void 418 auth_portal_delete(struct auth_portal *ap) 419 { 420 TAILQ_REMOVE(&ap->ap_auth_group->ag_portals, ap, ap_next); 421 422 free(ap->ap_initiator_portal); 423 free(ap); 424 } 425 426 bool 427 auth_portal_defined(const struct auth_group *ag) 428 { 429 if (TAILQ_EMPTY(&ag->ag_portals)) 430 return (false); 431 return (true); 432 } 433 434 const struct auth_portal * 435 auth_portal_find(const struct auth_group *ag, const struct sockaddr_storage *ss) 436 { 437 const struct auth_portal *ap; 438 const uint8_t *a, *b; 439 int i; 440 uint8_t bmask; 441 442 TAILQ_FOREACH(ap, &ag->ag_portals, ap_next) { 443 if (ap->ap_sa.ss_family != ss->ss_family) 444 continue; 445 if (ss->ss_family == AF_INET) { 446 a = (const uint8_t *) 447 &((const struct sockaddr_in *)ss)->sin_addr; 448 b = (const uint8_t *) 449 &((const struct sockaddr_in *)&ap->ap_sa)->sin_addr; 450 } else { 451 a = (const uint8_t *) 452 &((const struct sockaddr_in6 *)ss)->sin6_addr; 453 b = (const uint8_t *) 454 &((const struct sockaddr_in6 *)&ap->ap_sa)->sin6_addr; 455 } 456 for (i = 0; i < ap->ap_mask / 8; i++) { 457 if (a[i] != b[i]) 458 goto next; 459 } 460 if (ap->ap_mask % 8) { 461 bmask = 0xff << (8 - (ap->ap_mask % 8)); 462 if ((a[i] & bmask) != (b[i] & bmask)) 463 goto next; 464 } 465 return (ap); 466 next: 467 ; 468 } 469 470 return (NULL); 471 } 472 473 int 474 auth_portal_check(const struct auth_group *ag, const struct sockaddr_storage *sa) 475 { 476 477 if (!auth_portal_defined(ag)) 478 return (0); 479 480 if (auth_portal_find(ag, sa) == NULL) 481 return (1); 482 483 return (0); 484 } 485 486 struct auth_group * 487 auth_group_new(struct conf *conf, const char *name) 488 { 489 struct auth_group *ag; 490 491 if (name != NULL) { 492 ag = auth_group_find(conf, name); 493 if (ag != NULL) { 494 log_warnx("duplicated auth-group \"%s\"", name); 495 return (NULL); 496 } 497 } 498 499 ag = calloc(1, sizeof(*ag)); 500 if (ag == NULL) 501 log_err(1, "calloc"); 502 if (name != NULL) 503 ag->ag_name = checked_strdup(name); 504 TAILQ_INIT(&ag->ag_auths); 505 TAILQ_INIT(&ag->ag_names); 506 TAILQ_INIT(&ag->ag_portals); 507 ag->ag_conf = conf; 508 TAILQ_INSERT_TAIL(&conf->conf_auth_groups, ag, ag_next); 509 510 return (ag); 511 } 512 513 void 514 auth_group_delete(struct auth_group *ag) 515 { 516 struct auth *auth, *auth_tmp; 517 struct auth_name *auth_name, *auth_name_tmp; 518 struct auth_portal *auth_portal, *auth_portal_tmp; 519 520 TAILQ_REMOVE(&ag->ag_conf->conf_auth_groups, ag, ag_next); 521 522 TAILQ_FOREACH_SAFE(auth, &ag->ag_auths, a_next, auth_tmp) 523 auth_delete(auth); 524 TAILQ_FOREACH_SAFE(auth_name, &ag->ag_names, an_next, auth_name_tmp) 525 auth_name_delete(auth_name); 526 TAILQ_FOREACH_SAFE(auth_portal, &ag->ag_portals, ap_next, 527 auth_portal_tmp) 528 auth_portal_delete(auth_portal); 529 free(ag->ag_name); 530 free(ag); 531 } 532 533 struct auth_group * 534 auth_group_find(const struct conf *conf, const char *name) 535 { 536 struct auth_group *ag; 537 538 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) { 539 if (ag->ag_name != NULL && strcmp(ag->ag_name, name) == 0) 540 return (ag); 541 } 542 543 return (NULL); 544 } 545 546 int 547 auth_group_set_type(struct auth_group *ag, const char *str) 548 { 549 int type; 550 551 if (strcmp(str, "none") == 0) { 552 type = AG_TYPE_NO_AUTHENTICATION; 553 } else if (strcmp(str, "deny") == 0) { 554 type = AG_TYPE_DENY; 555 } else if (strcmp(str, "chap") == 0) { 556 type = AG_TYPE_CHAP; 557 } else if (strcmp(str, "chap-mutual") == 0) { 558 type = AG_TYPE_CHAP_MUTUAL; 559 } else { 560 if (ag->ag_name != NULL) 561 log_warnx("invalid auth-type \"%s\" for auth-group " 562 "\"%s\"", str, ag->ag_name); 563 else 564 log_warnx("invalid auth-type \"%s\" for target " 565 "\"%s\"", str, ag->ag_target->t_name); 566 return (1); 567 } 568 569 if (ag->ag_type != AG_TYPE_UNKNOWN && ag->ag_type != type) { 570 if (ag->ag_name != NULL) { 571 log_warnx("cannot set auth-type to \"%s\" for " 572 "auth-group \"%s\"; already has a different " 573 "type", str, ag->ag_name); 574 } else { 575 log_warnx("cannot set auth-type to \"%s\" for target " 576 "\"%s\"; already has a different type", 577 str, ag->ag_target->t_name); 578 } 579 return (1); 580 } 581 582 ag->ag_type = type; 583 584 return (0); 585 } 586 587 static struct portal * 588 portal_new(struct portal_group *pg) 589 { 590 struct portal *portal; 591 592 portal = calloc(1, sizeof(*portal)); 593 if (portal == NULL) 594 log_err(1, "calloc"); 595 TAILQ_INIT(&portal->p_targets); 596 portal->p_portal_group = pg; 597 TAILQ_INSERT_TAIL(&pg->pg_portals, portal, p_next); 598 return (portal); 599 } 600 601 static void 602 portal_delete(struct portal *portal) 603 { 604 605 TAILQ_REMOVE(&portal->p_portal_group->pg_portals, portal, p_next); 606 if (portal->p_ai != NULL) 607 freeaddrinfo(portal->p_ai); 608 free(portal->p_listen); 609 free(portal); 610 } 611 612 struct portal_group * 613 portal_group_new(struct conf *conf, const char *name) 614 { 615 struct portal_group *pg; 616 617 pg = portal_group_find(conf, name); 618 if (pg != NULL) { 619 log_warnx("duplicated portal-group \"%s\"", name); 620 return (NULL); 621 } 622 623 pg = calloc(1, sizeof(*pg)); 624 if (pg == NULL) 625 log_err(1, "calloc"); 626 pg->pg_name = checked_strdup(name); 627 TAILQ_INIT(&pg->pg_options); 628 TAILQ_INIT(&pg->pg_portals); 629 TAILQ_INIT(&pg->pg_ports); 630 pg->pg_conf = conf; 631 pg->pg_tag = 0; /* Assigned later in conf_apply(). */ 632 pg->pg_dscp = -1; 633 pg->pg_pcp = -1; 634 TAILQ_INSERT_TAIL(&conf->conf_portal_groups, pg, pg_next); 635 636 return (pg); 637 } 638 639 void 640 portal_group_delete(struct portal_group *pg) 641 { 642 struct portal *portal, *tmp; 643 struct port *port, *tport; 644 struct option *o, *otmp; 645 646 TAILQ_FOREACH_SAFE(port, &pg->pg_ports, p_pgs, tport) 647 port_delete(port); 648 TAILQ_REMOVE(&pg->pg_conf->conf_portal_groups, pg, pg_next); 649 650 TAILQ_FOREACH_SAFE(portal, &pg->pg_portals, p_next, tmp) 651 portal_delete(portal); 652 TAILQ_FOREACH_SAFE(o, &pg->pg_options, o_next, otmp) 653 option_delete(&pg->pg_options, o); 654 free(pg->pg_name); 655 free(pg->pg_offload); 656 free(pg->pg_redirection); 657 free(pg); 658 } 659 660 struct portal_group * 661 portal_group_find(const struct conf *conf, const char *name) 662 { 663 struct portal_group *pg; 664 665 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) { 666 if (strcmp(pg->pg_name, name) == 0) 667 return (pg); 668 } 669 670 return (NULL); 671 } 672 673 static int 674 parse_addr_port(char *arg, const char *def_port, struct addrinfo **ai) 675 { 676 struct addrinfo hints; 677 char *str, *addr, *ch; 678 const char *port; 679 int error, colons = 0; 680 681 str = arg = strdup(arg); 682 if (arg[0] == '[') { 683 /* 684 * IPv6 address in square brackets, perhaps with port. 685 */ 686 arg++; 687 addr = strsep(&arg, "]"); 688 if (arg == NULL) { 689 free(str); 690 return (1); 691 } 692 if (arg[0] == '\0') { 693 port = def_port; 694 } else if (arg[0] == ':') { 695 port = arg + 1; 696 } else { 697 free(str); 698 return (1); 699 } 700 } else { 701 /* 702 * Either IPv6 address without brackets - and without 703 * a port - or IPv4 address. Just count the colons. 704 */ 705 for (ch = arg; *ch != '\0'; ch++) { 706 if (*ch == ':') 707 colons++; 708 } 709 if (colons > 1) { 710 addr = arg; 711 port = def_port; 712 } else { 713 addr = strsep(&arg, ":"); 714 if (arg == NULL) 715 port = def_port; 716 else 717 port = arg; 718 } 719 } 720 721 memset(&hints, 0, sizeof(hints)); 722 hints.ai_family = PF_UNSPEC; 723 hints.ai_socktype = SOCK_STREAM; 724 hints.ai_flags = AI_PASSIVE; 725 error = getaddrinfo(addr, port, &hints, ai); 726 free(str); 727 return ((error != 0) ? 1 : 0); 728 } 729 730 int 731 portal_group_add_listen(struct portal_group *pg, const char *value, bool iser) 732 { 733 struct portal *portal; 734 735 portal = portal_new(pg); 736 portal->p_listen = checked_strdup(value); 737 portal->p_iser = iser; 738 739 if (parse_addr_port(portal->p_listen, "3260", &portal->p_ai)) { 740 log_warnx("invalid listen address %s", portal->p_listen); 741 portal_delete(portal); 742 return (1); 743 } 744 745 /* 746 * XXX: getaddrinfo(3) may return multiple addresses; we should turn 747 * those into multiple portals. 748 */ 749 750 return (0); 751 } 752 753 int 754 isns_new(struct conf *conf, const char *addr) 755 { 756 struct isns *isns; 757 758 isns = calloc(1, sizeof(*isns)); 759 if (isns == NULL) 760 log_err(1, "calloc"); 761 isns->i_conf = conf; 762 TAILQ_INSERT_TAIL(&conf->conf_isns, isns, i_next); 763 isns->i_addr = checked_strdup(addr); 764 765 if (parse_addr_port(isns->i_addr, "3205", &isns->i_ai)) { 766 log_warnx("invalid iSNS address %s", isns->i_addr); 767 isns_delete(isns); 768 return (1); 769 } 770 771 /* 772 * XXX: getaddrinfo(3) may return multiple addresses; we should turn 773 * those into multiple servers. 774 */ 775 776 return (0); 777 } 778 779 void 780 isns_delete(struct isns *isns) 781 { 782 783 TAILQ_REMOVE(&isns->i_conf->conf_isns, isns, i_next); 784 free(isns->i_addr); 785 if (isns->i_ai != NULL) 786 freeaddrinfo(isns->i_ai); 787 free(isns); 788 } 789 790 static int 791 isns_do_connect(struct isns *isns) 792 { 793 int s; 794 795 s = socket(isns->i_ai->ai_family, isns->i_ai->ai_socktype, 796 isns->i_ai->ai_protocol); 797 if (s < 0) { 798 log_warn("socket(2) failed for %s", isns->i_addr); 799 return (-1); 800 } 801 if (connect(s, isns->i_ai->ai_addr, isns->i_ai->ai_addrlen)) { 802 log_warn("connect(2) failed for %s", isns->i_addr); 803 close(s); 804 return (-1); 805 } 806 return(s); 807 } 808 809 static int 810 isns_do_register(struct isns *isns, int s, const char *hostname) 811 { 812 struct conf *conf = isns->i_conf; 813 struct target *target; 814 struct portal *portal; 815 struct portal_group *pg; 816 struct port *port; 817 struct isns_req *req; 818 int res = 0; 819 uint32_t error; 820 821 req = isns_req_create(ISNS_FUNC_DEVATTRREG, ISNS_FLAG_CLIENT); 822 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name); 823 isns_req_add_delim(req); 824 isns_req_add_str(req, 1, hostname); 825 isns_req_add_32(req, 2, 2); /* 2 -- iSCSI */ 826 isns_req_add_32(req, 6, conf->conf_isns_period); 827 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) { 828 if (pg->pg_unassigned) 829 continue; 830 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) { 831 isns_req_add_addr(req, 16, portal->p_ai); 832 isns_req_add_port(req, 17, portal->p_ai); 833 } 834 } 835 TAILQ_FOREACH(target, &conf->conf_targets, t_next) { 836 isns_req_add_str(req, 32, target->t_name); 837 isns_req_add_32(req, 33, 1); /* 1 -- Target*/ 838 if (target->t_alias != NULL) 839 isns_req_add_str(req, 34, target->t_alias); 840 TAILQ_FOREACH(port, &target->t_ports, p_ts) { 841 if ((pg = port->p_portal_group) == NULL) 842 continue; 843 isns_req_add_32(req, 51, pg->pg_tag); 844 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) { 845 isns_req_add_addr(req, 49, portal->p_ai); 846 isns_req_add_port(req, 50, portal->p_ai); 847 } 848 } 849 } 850 res = isns_req_send(s, req); 851 if (res < 0) { 852 log_warn("send(2) failed for %s", isns->i_addr); 853 goto quit; 854 } 855 res = isns_req_receive(s, req); 856 if (res < 0) { 857 log_warn("receive(2) failed for %s", isns->i_addr); 858 goto quit; 859 } 860 error = isns_req_get_status(req); 861 if (error != 0) { 862 log_warnx("iSNS register error %d for %s", error, isns->i_addr); 863 res = -1; 864 } 865 quit: 866 isns_req_free(req); 867 return (res); 868 } 869 870 static int 871 isns_do_check(struct isns *isns, int s, const char *hostname) 872 { 873 struct conf *conf = isns->i_conf; 874 struct isns_req *req; 875 int res = 0; 876 uint32_t error; 877 878 req = isns_req_create(ISNS_FUNC_DEVATTRQRY, ISNS_FLAG_CLIENT); 879 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name); 880 isns_req_add_str(req, 1, hostname); 881 isns_req_add_delim(req); 882 isns_req_add(req, 2, 0, NULL); 883 res = isns_req_send(s, req); 884 if (res < 0) { 885 log_warn("send(2) failed for %s", isns->i_addr); 886 goto quit; 887 } 888 res = isns_req_receive(s, req); 889 if (res < 0) { 890 log_warn("receive(2) failed for %s", isns->i_addr); 891 goto quit; 892 } 893 error = isns_req_get_status(req); 894 if (error != 0) { 895 log_warnx("iSNS check error %d for %s", error, isns->i_addr); 896 res = -1; 897 } 898 quit: 899 isns_req_free(req); 900 return (res); 901 } 902 903 static int 904 isns_do_deregister(struct isns *isns, int s, const char *hostname) 905 { 906 struct conf *conf = isns->i_conf; 907 struct isns_req *req; 908 int res = 0; 909 uint32_t error; 910 911 req = isns_req_create(ISNS_FUNC_DEVDEREG, ISNS_FLAG_CLIENT); 912 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name); 913 isns_req_add_delim(req); 914 isns_req_add_str(req, 1, hostname); 915 res = isns_req_send(s, req); 916 if (res < 0) { 917 log_warn("send(2) failed for %s", isns->i_addr); 918 goto quit; 919 } 920 res = isns_req_receive(s, req); 921 if (res < 0) { 922 log_warn("receive(2) failed for %s", isns->i_addr); 923 goto quit; 924 } 925 error = isns_req_get_status(req); 926 if (error != 0) { 927 log_warnx("iSNS deregister error %d for %s", error, isns->i_addr); 928 res = -1; 929 } 930 quit: 931 isns_req_free(req); 932 return (res); 933 } 934 935 void 936 isns_register(struct isns *isns, struct isns *oldisns) 937 { 938 struct conf *conf = isns->i_conf; 939 int error, s; 940 char hostname[256]; 941 942 if (TAILQ_EMPTY(&conf->conf_targets) || 943 TAILQ_EMPTY(&conf->conf_portal_groups)) 944 return; 945 set_timeout(conf->conf_isns_timeout, false); 946 s = isns_do_connect(isns); 947 if (s < 0) { 948 set_timeout(0, false); 949 return; 950 } 951 error = gethostname(hostname, sizeof(hostname)); 952 if (error != 0) 953 log_err(1, "gethostname"); 954 955 if (oldisns == NULL || TAILQ_EMPTY(&oldisns->i_conf->conf_targets)) 956 oldisns = isns; 957 isns_do_deregister(oldisns, s, hostname); 958 isns_do_register(isns, s, hostname); 959 close(s); 960 set_timeout(0, false); 961 } 962 963 void 964 isns_check(struct isns *isns) 965 { 966 struct conf *conf = isns->i_conf; 967 int error, s, res; 968 char hostname[256]; 969 970 if (TAILQ_EMPTY(&conf->conf_targets) || 971 TAILQ_EMPTY(&conf->conf_portal_groups)) 972 return; 973 set_timeout(conf->conf_isns_timeout, false); 974 s = isns_do_connect(isns); 975 if (s < 0) { 976 set_timeout(0, false); 977 return; 978 } 979 error = gethostname(hostname, sizeof(hostname)); 980 if (error != 0) 981 log_err(1, "gethostname"); 982 983 res = isns_do_check(isns, s, hostname); 984 if (res < 0) { 985 isns_do_deregister(isns, s, hostname); 986 isns_do_register(isns, s, hostname); 987 } 988 close(s); 989 set_timeout(0, false); 990 } 991 992 void 993 isns_deregister(struct isns *isns) 994 { 995 struct conf *conf = isns->i_conf; 996 int error, s; 997 char hostname[256]; 998 999 if (TAILQ_EMPTY(&conf->conf_targets) || 1000 TAILQ_EMPTY(&conf->conf_portal_groups)) 1001 return; 1002 set_timeout(conf->conf_isns_timeout, false); 1003 s = isns_do_connect(isns); 1004 if (s < 0) 1005 return; 1006 error = gethostname(hostname, sizeof(hostname)); 1007 if (error != 0) 1008 log_err(1, "gethostname"); 1009 1010 isns_do_deregister(isns, s, hostname); 1011 close(s); 1012 set_timeout(0, false); 1013 } 1014 1015 int 1016 portal_group_set_filter(struct portal_group *pg, const char *str) 1017 { 1018 int filter; 1019 1020 if (strcmp(str, "none") == 0) { 1021 filter = PG_FILTER_NONE; 1022 } else if (strcmp(str, "portal") == 0) { 1023 filter = PG_FILTER_PORTAL; 1024 } else if (strcmp(str, "portal-name") == 0) { 1025 filter = PG_FILTER_PORTAL_NAME; 1026 } else if (strcmp(str, "portal-name-auth") == 0) { 1027 filter = PG_FILTER_PORTAL_NAME_AUTH; 1028 } else { 1029 log_warnx("invalid discovery-filter \"%s\" for portal-group " 1030 "\"%s\"; valid values are \"none\", \"portal\", " 1031 "\"portal-name\", and \"portal-name-auth\"", 1032 str, pg->pg_name); 1033 return (1); 1034 } 1035 1036 if (pg->pg_discovery_filter != PG_FILTER_UNKNOWN && 1037 pg->pg_discovery_filter != filter) { 1038 log_warnx("cannot set discovery-filter to \"%s\" for " 1039 "portal-group \"%s\"; already has a different " 1040 "value", str, pg->pg_name); 1041 return (1); 1042 } 1043 1044 pg->pg_discovery_filter = filter; 1045 1046 return (0); 1047 } 1048 1049 int 1050 portal_group_set_offload(struct portal_group *pg, const char *offload) 1051 { 1052 1053 if (pg->pg_offload != NULL) { 1054 log_warnx("cannot set offload to \"%s\" for " 1055 "portal-group \"%s\"; already defined", 1056 offload, pg->pg_name); 1057 return (1); 1058 } 1059 1060 pg->pg_offload = checked_strdup(offload); 1061 1062 return (0); 1063 } 1064 1065 int 1066 portal_group_set_redirection(struct portal_group *pg, const char *addr) 1067 { 1068 1069 if (pg->pg_redirection != NULL) { 1070 log_warnx("cannot set redirection to \"%s\" for " 1071 "portal-group \"%s\"; already defined", 1072 addr, pg->pg_name); 1073 return (1); 1074 } 1075 1076 pg->pg_redirection = checked_strdup(addr); 1077 1078 return (0); 1079 } 1080 1081 static bool 1082 valid_hex(const char ch) 1083 { 1084 switch (ch) { 1085 case '0': 1086 case '1': 1087 case '2': 1088 case '3': 1089 case '4': 1090 case '5': 1091 case '6': 1092 case '7': 1093 case '8': 1094 case '9': 1095 case 'a': 1096 case 'A': 1097 case 'b': 1098 case 'B': 1099 case 'c': 1100 case 'C': 1101 case 'd': 1102 case 'D': 1103 case 'e': 1104 case 'E': 1105 case 'f': 1106 case 'F': 1107 return (true); 1108 default: 1109 return (false); 1110 } 1111 } 1112 1113 bool 1114 valid_iscsi_name(const char *name) 1115 { 1116 int i; 1117 1118 if (strlen(name) >= MAX_NAME_LEN) { 1119 log_warnx("overlong name for target \"%s\"; max length allowed " 1120 "by iSCSI specification is %d characters", 1121 name, MAX_NAME_LEN); 1122 return (false); 1123 } 1124 1125 /* 1126 * In the cases below, we don't return an error, just in case the admin 1127 * was right, and we're wrong. 1128 */ 1129 if (strncasecmp(name, "iqn.", strlen("iqn.")) == 0) { 1130 for (i = strlen("iqn."); name[i] != '\0'; i++) { 1131 /* 1132 * XXX: We should verify UTF-8 normalisation, as defined 1133 * by 3.2.6.2: iSCSI Name Encoding. 1134 */ 1135 if (isalnum(name[i])) 1136 continue; 1137 if (name[i] == '-' || name[i] == '.' || name[i] == ':') 1138 continue; 1139 log_warnx("invalid character \"%c\" in target name " 1140 "\"%s\"; allowed characters are letters, digits, " 1141 "'-', '.', and ':'", name[i], name); 1142 break; 1143 } 1144 /* 1145 * XXX: Check more stuff: valid date and a valid reversed domain. 1146 */ 1147 } else if (strncasecmp(name, "eui.", strlen("eui.")) == 0) { 1148 if (strlen(name) != strlen("eui.") + 16) 1149 log_warnx("invalid target name \"%s\"; the \"eui.\" " 1150 "should be followed by exactly 16 hexadecimal " 1151 "digits", name); 1152 for (i = strlen("eui."); name[i] != '\0'; i++) { 1153 if (!valid_hex(name[i])) { 1154 log_warnx("invalid character \"%c\" in target " 1155 "name \"%s\"; allowed characters are 1-9 " 1156 "and A-F", name[i], name); 1157 break; 1158 } 1159 } 1160 } else if (strncasecmp(name, "naa.", strlen("naa.")) == 0) { 1161 if (strlen(name) > strlen("naa.") + 32) 1162 log_warnx("invalid target name \"%s\"; the \"naa.\" " 1163 "should be followed by at most 32 hexadecimal " 1164 "digits", name); 1165 for (i = strlen("naa."); name[i] != '\0'; i++) { 1166 if (!valid_hex(name[i])) { 1167 log_warnx("invalid character \"%c\" in target " 1168 "name \"%s\"; allowed characters are 1-9 " 1169 "and A-F", name[i], name); 1170 break; 1171 } 1172 } 1173 } else { 1174 log_warnx("invalid target name \"%s\"; should start with " 1175 "either \"iqn.\", \"eui.\", or \"naa.\"", 1176 name); 1177 } 1178 return (true); 1179 } 1180 1181 struct pport * 1182 pport_new(struct conf *conf, const char *name, uint32_t ctl_port) 1183 { 1184 struct pport *pp; 1185 1186 pp = calloc(1, sizeof(*pp)); 1187 if (pp == NULL) 1188 log_err(1, "calloc"); 1189 pp->pp_conf = conf; 1190 pp->pp_name = checked_strdup(name); 1191 pp->pp_ctl_port = ctl_port; 1192 TAILQ_INIT(&pp->pp_ports); 1193 TAILQ_INSERT_TAIL(&conf->conf_pports, pp, pp_next); 1194 return (pp); 1195 } 1196 1197 struct pport * 1198 pport_find(const struct conf *conf, const char *name) 1199 { 1200 struct pport *pp; 1201 1202 TAILQ_FOREACH(pp, &conf->conf_pports, pp_next) { 1203 if (strcasecmp(pp->pp_name, name) == 0) 1204 return (pp); 1205 } 1206 return (NULL); 1207 } 1208 1209 struct pport * 1210 pport_copy(struct pport *pp, struct conf *conf) 1211 { 1212 struct pport *ppnew; 1213 1214 ppnew = pport_new(conf, pp->pp_name, pp->pp_ctl_port); 1215 return (ppnew); 1216 } 1217 1218 void 1219 pport_delete(struct pport *pp) 1220 { 1221 struct port *port, *tport; 1222 1223 TAILQ_FOREACH_SAFE(port, &pp->pp_ports, p_ts, tport) 1224 port_delete(port); 1225 TAILQ_REMOVE(&pp->pp_conf->conf_pports, pp, pp_next); 1226 free(pp->pp_name); 1227 free(pp); 1228 } 1229 1230 struct port * 1231 port_new(struct conf *conf, struct target *target, struct portal_group *pg) 1232 { 1233 struct port *port; 1234 char *name; 1235 int ret; 1236 1237 ret = asprintf(&name, "%s-%s", pg->pg_name, target->t_name); 1238 if (ret <= 0) 1239 log_err(1, "asprintf"); 1240 if (port_find(conf, name) != NULL) { 1241 log_warnx("duplicate port \"%s\"", name); 1242 free(name); 1243 return (NULL); 1244 } 1245 port = calloc(1, sizeof(*port)); 1246 if (port == NULL) 1247 log_err(1, "calloc"); 1248 port->p_conf = conf; 1249 port->p_name = name; 1250 port->p_ioctl_port = 0; 1251 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next); 1252 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts); 1253 port->p_target = target; 1254 TAILQ_INSERT_TAIL(&pg->pg_ports, port, p_pgs); 1255 port->p_portal_group = pg; 1256 return (port); 1257 } 1258 1259 struct port * 1260 port_new_ioctl(struct conf *conf, struct target *target, int pp, int vp) 1261 { 1262 struct pport *pport; 1263 struct port *port; 1264 char *pname; 1265 char *name; 1266 int ret; 1267 1268 ret = asprintf(&pname, "ioctl/%d/%d", pp, vp); 1269 if (ret <= 0) { 1270 log_err(1, "asprintf"); 1271 return (NULL); 1272 } 1273 1274 pport = pport_find(conf, pname); 1275 if (pport != NULL) { 1276 free(pname); 1277 return (port_new_pp(conf, target, pport)); 1278 } 1279 1280 ret = asprintf(&name, "%s-%s", pname, target->t_name); 1281 free(pname); 1282 1283 if (ret <= 0) 1284 log_err(1, "asprintf"); 1285 if (port_find(conf, name) != NULL) { 1286 log_warnx("duplicate port \"%s\"", name); 1287 free(name); 1288 return (NULL); 1289 } 1290 port = calloc(1, sizeof(*port)); 1291 if (port == NULL) 1292 log_err(1, "calloc"); 1293 port->p_conf = conf; 1294 port->p_name = name; 1295 port->p_ioctl_port = 1; 1296 port->p_ioctl_pp = pp; 1297 port->p_ioctl_vp = vp; 1298 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next); 1299 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts); 1300 port->p_target = target; 1301 return (port); 1302 } 1303 1304 struct port * 1305 port_new_pp(struct conf *conf, struct target *target, struct pport *pp) 1306 { 1307 struct port *port; 1308 char *name; 1309 int ret; 1310 1311 ret = asprintf(&name, "%s-%s", pp->pp_name, target->t_name); 1312 if (ret <= 0) 1313 log_err(1, "asprintf"); 1314 if (port_find(conf, name) != NULL) { 1315 log_warnx("duplicate port \"%s\"", name); 1316 free(name); 1317 return (NULL); 1318 } 1319 port = calloc(1, sizeof(*port)); 1320 if (port == NULL) 1321 log_err(1, "calloc"); 1322 port->p_conf = conf; 1323 port->p_name = name; 1324 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next); 1325 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts); 1326 port->p_target = target; 1327 TAILQ_INSERT_TAIL(&pp->pp_ports, port, p_pps); 1328 port->p_pport = pp; 1329 return (port); 1330 } 1331 1332 struct port * 1333 port_find(const struct conf *conf, const char *name) 1334 { 1335 struct port *port; 1336 1337 TAILQ_FOREACH(port, &conf->conf_ports, p_next) { 1338 if (strcasecmp(port->p_name, name) == 0) 1339 return (port); 1340 } 1341 1342 return (NULL); 1343 } 1344 1345 struct port * 1346 port_find_in_pg(const struct portal_group *pg, const char *target) 1347 { 1348 struct port *port; 1349 1350 TAILQ_FOREACH(port, &pg->pg_ports, p_pgs) { 1351 if (strcasecmp(port->p_target->t_name, target) == 0) 1352 return (port); 1353 } 1354 1355 return (NULL); 1356 } 1357 1358 void 1359 port_delete(struct port *port) 1360 { 1361 1362 if (port->p_portal_group) 1363 TAILQ_REMOVE(&port->p_portal_group->pg_ports, port, p_pgs); 1364 if (port->p_pport) 1365 TAILQ_REMOVE(&port->p_pport->pp_ports, port, p_pps); 1366 if (port->p_target) 1367 TAILQ_REMOVE(&port->p_target->t_ports, port, p_ts); 1368 TAILQ_REMOVE(&port->p_conf->conf_ports, port, p_next); 1369 free(port->p_name); 1370 free(port); 1371 } 1372 1373 int 1374 port_is_dummy(struct port *port) 1375 { 1376 1377 if (port->p_portal_group) { 1378 if (port->p_portal_group->pg_foreign) 1379 return (1); 1380 if (TAILQ_EMPTY(&port->p_portal_group->pg_portals)) 1381 return (1); 1382 } 1383 return (0); 1384 } 1385 1386 struct target * 1387 target_new(struct conf *conf, const char *name) 1388 { 1389 struct target *targ; 1390 int i, len; 1391 1392 targ = target_find(conf, name); 1393 if (targ != NULL) { 1394 log_warnx("duplicated target \"%s\"", name); 1395 return (NULL); 1396 } 1397 if (valid_iscsi_name(name) == false) { 1398 log_warnx("target name \"%s\" is invalid", name); 1399 return (NULL); 1400 } 1401 targ = calloc(1, sizeof(*targ)); 1402 if (targ == NULL) 1403 log_err(1, "calloc"); 1404 targ->t_name = checked_strdup(name); 1405 1406 /* 1407 * RFC 3722 requires us to normalize the name to lowercase. 1408 */ 1409 len = strlen(name); 1410 for (i = 0; i < len; i++) 1411 targ->t_name[i] = tolower(targ->t_name[i]); 1412 1413 targ->t_conf = conf; 1414 TAILQ_INIT(&targ->t_ports); 1415 TAILQ_INSERT_TAIL(&conf->conf_targets, targ, t_next); 1416 1417 return (targ); 1418 } 1419 1420 void 1421 target_delete(struct target *targ) 1422 { 1423 struct port *port, *tport; 1424 1425 TAILQ_FOREACH_SAFE(port, &targ->t_ports, p_ts, tport) 1426 port_delete(port); 1427 TAILQ_REMOVE(&targ->t_conf->conf_targets, targ, t_next); 1428 1429 free(targ->t_name); 1430 free(targ->t_redirection); 1431 free(targ); 1432 } 1433 1434 struct target * 1435 target_find(struct conf *conf, const char *name) 1436 { 1437 struct target *targ; 1438 1439 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) { 1440 if (strcasecmp(targ->t_name, name) == 0) 1441 return (targ); 1442 } 1443 1444 return (NULL); 1445 } 1446 1447 int 1448 target_set_redirection(struct target *target, const char *addr) 1449 { 1450 1451 if (target->t_redirection != NULL) { 1452 log_warnx("cannot set redirection to \"%s\" for " 1453 "target \"%s\"; already defined", 1454 addr, target->t_name); 1455 return (1); 1456 } 1457 1458 target->t_redirection = checked_strdup(addr); 1459 1460 return (0); 1461 } 1462 1463 struct lun * 1464 lun_new(struct conf *conf, const char *name) 1465 { 1466 struct lun *lun; 1467 1468 lun = lun_find(conf, name); 1469 if (lun != NULL) { 1470 log_warnx("duplicated lun \"%s\"", name); 1471 return (NULL); 1472 } 1473 1474 lun = calloc(1, sizeof(*lun)); 1475 if (lun == NULL) 1476 log_err(1, "calloc"); 1477 lun->l_conf = conf; 1478 lun->l_name = checked_strdup(name); 1479 TAILQ_INIT(&lun->l_options); 1480 TAILQ_INSERT_TAIL(&conf->conf_luns, lun, l_next); 1481 lun->l_ctl_lun = -1; 1482 1483 return (lun); 1484 } 1485 1486 void 1487 lun_delete(struct lun *lun) 1488 { 1489 struct target *targ; 1490 struct option *o, *tmp; 1491 int i; 1492 1493 TAILQ_FOREACH(targ, &lun->l_conf->conf_targets, t_next) { 1494 for (i = 0; i < MAX_LUNS; i++) { 1495 if (targ->t_luns[i] == lun) 1496 targ->t_luns[i] = NULL; 1497 } 1498 } 1499 TAILQ_REMOVE(&lun->l_conf->conf_luns, lun, l_next); 1500 1501 TAILQ_FOREACH_SAFE(o, &lun->l_options, o_next, tmp) 1502 option_delete(&lun->l_options, o); 1503 free(lun->l_name); 1504 free(lun->l_backend); 1505 free(lun->l_device_id); 1506 free(lun->l_path); 1507 free(lun->l_scsiname); 1508 free(lun->l_serial); 1509 free(lun); 1510 } 1511 1512 struct lun * 1513 lun_find(const struct conf *conf, const char *name) 1514 { 1515 struct lun *lun; 1516 1517 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) { 1518 if (strcmp(lun->l_name, name) == 0) 1519 return (lun); 1520 } 1521 1522 return (NULL); 1523 } 1524 1525 void 1526 lun_set_backend(struct lun *lun, const char *value) 1527 { 1528 free(lun->l_backend); 1529 lun->l_backend = checked_strdup(value); 1530 } 1531 1532 void 1533 lun_set_blocksize(struct lun *lun, size_t value) 1534 { 1535 1536 lun->l_blocksize = value; 1537 } 1538 1539 void 1540 lun_set_device_type(struct lun *lun, uint8_t value) 1541 { 1542 1543 lun->l_device_type = value; 1544 } 1545 1546 void 1547 lun_set_device_id(struct lun *lun, const char *value) 1548 { 1549 free(lun->l_device_id); 1550 lun->l_device_id = checked_strdup(value); 1551 } 1552 1553 void 1554 lun_set_path(struct lun *lun, const char *value) 1555 { 1556 free(lun->l_path); 1557 lun->l_path = checked_strdup(value); 1558 } 1559 1560 void 1561 lun_set_scsiname(struct lun *lun, const char *value) 1562 { 1563 free(lun->l_scsiname); 1564 lun->l_scsiname = checked_strdup(value); 1565 } 1566 1567 void 1568 lun_set_serial(struct lun *lun, const char *value) 1569 { 1570 free(lun->l_serial); 1571 lun->l_serial = checked_strdup(value); 1572 } 1573 1574 void 1575 lun_set_size(struct lun *lun, size_t value) 1576 { 1577 1578 lun->l_size = value; 1579 } 1580 1581 void 1582 lun_set_ctl_lun(struct lun *lun, uint32_t value) 1583 { 1584 1585 lun->l_ctl_lun = value; 1586 } 1587 1588 struct option * 1589 option_new(struct options *options, const char *name, const char *value) 1590 { 1591 struct option *o; 1592 1593 o = option_find(options, name); 1594 if (o != NULL) { 1595 log_warnx("duplicated option \"%s\"", name); 1596 return (NULL); 1597 } 1598 1599 o = calloc(1, sizeof(*o)); 1600 if (o == NULL) 1601 log_err(1, "calloc"); 1602 o->o_name = checked_strdup(name); 1603 o->o_value = checked_strdup(value); 1604 TAILQ_INSERT_TAIL(options, o, o_next); 1605 1606 return (o); 1607 } 1608 1609 void 1610 option_delete(struct options *options, struct option *o) 1611 { 1612 1613 TAILQ_REMOVE(options, o, o_next); 1614 free(o->o_name); 1615 free(o->o_value); 1616 free(o); 1617 } 1618 1619 struct option * 1620 option_find(const struct options *options, const char *name) 1621 { 1622 struct option *o; 1623 1624 TAILQ_FOREACH(o, options, o_next) { 1625 if (strcmp(o->o_name, name) == 0) 1626 return (o); 1627 } 1628 1629 return (NULL); 1630 } 1631 1632 void 1633 option_set(struct option *o, const char *value) 1634 { 1635 1636 free(o->o_value); 1637 o->o_value = checked_strdup(value); 1638 } 1639 1640 #ifdef ICL_KERNEL_PROXY 1641 1642 static void 1643 pdu_receive_proxy(struct pdu *pdu) 1644 { 1645 struct connection *conn; 1646 size_t len; 1647 1648 assert(proxy_mode); 1649 conn = pdu->pdu_connection; 1650 1651 kernel_receive(pdu); 1652 1653 len = pdu_ahs_length(pdu); 1654 if (len > 0) 1655 log_errx(1, "protocol error: non-empty AHS"); 1656 1657 len = pdu_data_segment_length(pdu); 1658 assert(len <= (size_t)conn->conn_max_recv_data_segment_length); 1659 pdu->pdu_data_len = len; 1660 } 1661 1662 static void 1663 pdu_send_proxy(struct pdu *pdu) 1664 { 1665 1666 assert(proxy_mode); 1667 1668 pdu_set_data_segment_length(pdu, pdu->pdu_data_len); 1669 kernel_send(pdu); 1670 } 1671 1672 #endif /* ICL_KERNEL_PROXY */ 1673 1674 static void 1675 pdu_fail(const struct connection *conn __unused, const char *reason __unused) 1676 { 1677 } 1678 1679 static struct ctld_connection * 1680 connection_new(struct portal *portal, int fd, const char *host, 1681 const struct sockaddr *client_sa) 1682 { 1683 struct ctld_connection *conn; 1684 1685 conn = calloc(1, sizeof(*conn)); 1686 if (conn == NULL) 1687 log_err(1, "calloc"); 1688 connection_init(&conn->conn, &conn_ops, proxy_mode); 1689 conn->conn.conn_socket = fd; 1690 conn->conn_portal = portal; 1691 conn->conn_initiator_addr = checked_strdup(host); 1692 memcpy(&conn->conn_initiator_sa, client_sa, client_sa->sa_len); 1693 1694 return (conn); 1695 } 1696 1697 #if 0 1698 static void 1699 conf_print(struct conf *conf) 1700 { 1701 struct auth_group *ag; 1702 struct auth *auth; 1703 struct auth_name *auth_name; 1704 struct auth_portal *auth_portal; 1705 struct portal_group *pg; 1706 struct portal *portal; 1707 struct target *targ; 1708 struct lun *lun; 1709 struct option *o; 1710 1711 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) { 1712 fprintf(stderr, "auth-group %s {\n", ag->ag_name); 1713 TAILQ_FOREACH(auth, &ag->ag_auths, a_next) 1714 fprintf(stderr, "\t chap-mutual %s %s %s %s\n", 1715 auth->a_user, auth->a_secret, 1716 auth->a_mutual_user, auth->a_mutual_secret); 1717 TAILQ_FOREACH(auth_name, &ag->ag_names, an_next) 1718 fprintf(stderr, "\t initiator-name %s\n", 1719 auth_name->an_initiator_name); 1720 TAILQ_FOREACH(auth_portal, &ag->ag_portals, ap_next) 1721 fprintf(stderr, "\t initiator-portal %s\n", 1722 auth_portal->ap_initiator_portal); 1723 fprintf(stderr, "}\n"); 1724 } 1725 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) { 1726 fprintf(stderr, "portal-group %s {\n", pg->pg_name); 1727 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) 1728 fprintf(stderr, "\t listen %s\n", portal->p_listen); 1729 fprintf(stderr, "}\n"); 1730 } 1731 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) { 1732 fprintf(stderr, "\tlun %s {\n", lun->l_name); 1733 fprintf(stderr, "\t\tpath %s\n", lun->l_path); 1734 TAILQ_FOREACH(o, &lun->l_options, o_next) 1735 fprintf(stderr, "\t\toption %s %s\n", 1736 o->o_name, o->o_value); 1737 fprintf(stderr, "\t}\n"); 1738 } 1739 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) { 1740 fprintf(stderr, "target %s {\n", targ->t_name); 1741 if (targ->t_alias != NULL) 1742 fprintf(stderr, "\t alias %s\n", targ->t_alias); 1743 fprintf(stderr, "}\n"); 1744 } 1745 } 1746 #endif 1747 1748 static int 1749 conf_verify_lun(struct lun *lun) 1750 { 1751 const struct lun *lun2; 1752 1753 if (lun->l_backend == NULL) 1754 lun_set_backend(lun, "block"); 1755 if (strcmp(lun->l_backend, "block") == 0) { 1756 if (lun->l_path == NULL) { 1757 log_warnx("missing path for lun \"%s\"", 1758 lun->l_name); 1759 return (1); 1760 } 1761 } else if (strcmp(lun->l_backend, "ramdisk") == 0) { 1762 if (lun->l_size == 0) { 1763 log_warnx("missing size for ramdisk-backed lun \"%s\"", 1764 lun->l_name); 1765 return (1); 1766 } 1767 if (lun->l_path != NULL) { 1768 log_warnx("path must not be specified " 1769 "for ramdisk-backed lun \"%s\"", 1770 lun->l_name); 1771 return (1); 1772 } 1773 } 1774 if (lun->l_blocksize == 0) { 1775 if (lun->l_device_type == 5) 1776 lun_set_blocksize(lun, DEFAULT_CD_BLOCKSIZE); 1777 else 1778 lun_set_blocksize(lun, DEFAULT_BLOCKSIZE); 1779 } else if (lun->l_blocksize < 0) { 1780 log_warnx("invalid blocksize for lun \"%s\"; " 1781 "must be larger than 0", lun->l_name); 1782 return (1); 1783 } 1784 if (lun->l_size != 0 && lun->l_size % lun->l_blocksize != 0) { 1785 log_warnx("invalid size for lun \"%s\"; " 1786 "must be multiple of blocksize", lun->l_name); 1787 return (1); 1788 } 1789 TAILQ_FOREACH(lun2, &lun->l_conf->conf_luns, l_next) { 1790 if (lun == lun2) 1791 continue; 1792 if (lun->l_path != NULL && lun2->l_path != NULL && 1793 strcmp(lun->l_path, lun2->l_path) == 0) { 1794 log_debugx("WARNING: path \"%s\" duplicated " 1795 "between lun \"%s\", and " 1796 "lun \"%s\"", lun->l_path, 1797 lun->l_name, lun2->l_name); 1798 } 1799 } 1800 1801 return (0); 1802 } 1803 1804 int 1805 conf_verify(struct conf *conf) 1806 { 1807 struct auth_group *ag; 1808 struct portal_group *pg; 1809 struct port *port; 1810 struct target *targ; 1811 struct lun *lun; 1812 bool found; 1813 int error, i; 1814 1815 if (conf->conf_pidfile_path == NULL) 1816 conf->conf_pidfile_path = checked_strdup(DEFAULT_PIDFILE); 1817 1818 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) { 1819 error = conf_verify_lun(lun); 1820 if (error != 0) 1821 return (error); 1822 } 1823 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) { 1824 if (targ->t_auth_group == NULL) { 1825 targ->t_auth_group = auth_group_find(conf, 1826 "default"); 1827 assert(targ->t_auth_group != NULL); 1828 } 1829 if (TAILQ_EMPTY(&targ->t_ports)) { 1830 pg = portal_group_find(conf, "default"); 1831 assert(pg != NULL); 1832 port_new(conf, targ, pg); 1833 } 1834 found = false; 1835 for (i = 0; i < MAX_LUNS; i++) { 1836 if (targ->t_luns[i] != NULL) 1837 found = true; 1838 } 1839 if (!found && targ->t_redirection == NULL) { 1840 log_warnx("no LUNs defined for target \"%s\"", 1841 targ->t_name); 1842 } 1843 if (found && targ->t_redirection != NULL) { 1844 log_debugx("target \"%s\" contains luns, " 1845 " but configured for redirection", 1846 targ->t_name); 1847 } 1848 } 1849 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) { 1850 assert(pg->pg_name != NULL); 1851 if (pg->pg_discovery_auth_group == NULL) { 1852 pg->pg_discovery_auth_group = 1853 auth_group_find(conf, "default"); 1854 assert(pg->pg_discovery_auth_group != NULL); 1855 } 1856 1857 if (pg->pg_discovery_filter == PG_FILTER_UNKNOWN) 1858 pg->pg_discovery_filter = PG_FILTER_NONE; 1859 1860 if (pg->pg_redirection != NULL) { 1861 if (!TAILQ_EMPTY(&pg->pg_ports)) { 1862 log_debugx("portal-group \"%s\" assigned " 1863 "to target, but configured " 1864 "for redirection", 1865 pg->pg_name); 1866 } 1867 pg->pg_unassigned = false; 1868 } else if (!TAILQ_EMPTY(&pg->pg_ports)) { 1869 pg->pg_unassigned = false; 1870 } else { 1871 if (strcmp(pg->pg_name, "default") != 0) 1872 log_warnx("portal-group \"%s\" not assigned " 1873 "to any target", pg->pg_name); 1874 pg->pg_unassigned = true; 1875 } 1876 } 1877 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) { 1878 if (ag->ag_name == NULL) 1879 assert(ag->ag_target != NULL); 1880 else 1881 assert(ag->ag_target == NULL); 1882 1883 found = false; 1884 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) { 1885 if (targ->t_auth_group == ag) { 1886 found = true; 1887 break; 1888 } 1889 } 1890 TAILQ_FOREACH(port, &conf->conf_ports, p_next) { 1891 if (port->p_auth_group == ag) { 1892 found = true; 1893 break; 1894 } 1895 } 1896 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) { 1897 if (pg->pg_discovery_auth_group == ag) { 1898 found = true; 1899 break; 1900 } 1901 } 1902 if (!found && ag->ag_name != NULL && 1903 strcmp(ag->ag_name, "default") != 0 && 1904 strcmp(ag->ag_name, "no-authentication") != 0 && 1905 strcmp(ag->ag_name, "no-access") != 0) { 1906 log_warnx("auth-group \"%s\" not assigned " 1907 "to any target", ag->ag_name); 1908 } 1909 } 1910 1911 return (0); 1912 } 1913 1914 static int 1915 conf_apply(struct conf *oldconf, struct conf *newconf) 1916 { 1917 struct lun *oldlun, *newlun, *tmplun; 1918 struct portal_group *oldpg, *newpg; 1919 struct portal *oldp, *newp; 1920 struct port *oldport, *newport, *tmpport; 1921 struct isns *oldns, *newns; 1922 pid_t otherpid; 1923 int changed, cumulated_error = 0, error, sockbuf; 1924 int one = 1; 1925 1926 if (oldconf->conf_debug != newconf->conf_debug) { 1927 log_debugx("changing debug level to %d", newconf->conf_debug); 1928 log_init(newconf->conf_debug); 1929 } 1930 1931 if (oldconf->conf_pidfh != NULL) { 1932 assert(oldconf->conf_pidfile_path != NULL); 1933 if (newconf->conf_pidfile_path != NULL && 1934 strcmp(oldconf->conf_pidfile_path, 1935 newconf->conf_pidfile_path) == 0) { 1936 newconf->conf_pidfh = oldconf->conf_pidfh; 1937 oldconf->conf_pidfh = NULL; 1938 } else { 1939 log_debugx("removing pidfile %s", 1940 oldconf->conf_pidfile_path); 1941 pidfile_remove(oldconf->conf_pidfh); 1942 oldconf->conf_pidfh = NULL; 1943 } 1944 } 1945 1946 if (newconf->conf_pidfh == NULL && newconf->conf_pidfile_path != NULL) { 1947 log_debugx("opening pidfile %s", newconf->conf_pidfile_path); 1948 newconf->conf_pidfh = 1949 pidfile_open(newconf->conf_pidfile_path, 0600, &otherpid); 1950 if (newconf->conf_pidfh == NULL) { 1951 if (errno == EEXIST) 1952 log_errx(1, "daemon already running, pid: %jd.", 1953 (intmax_t)otherpid); 1954 log_err(1, "cannot open or create pidfile \"%s\"", 1955 newconf->conf_pidfile_path); 1956 } 1957 } 1958 1959 /* 1960 * Go through the new portal groups, assigning tags or preserving old. 1961 */ 1962 TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) { 1963 if (newpg->pg_tag != 0) 1964 continue; 1965 oldpg = portal_group_find(oldconf, newpg->pg_name); 1966 if (oldpg != NULL) 1967 newpg->pg_tag = oldpg->pg_tag; 1968 else 1969 newpg->pg_tag = ++last_portal_group_tag; 1970 } 1971 1972 /* Deregister on removed iSNS servers. */ 1973 TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) { 1974 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) { 1975 if (strcmp(oldns->i_addr, newns->i_addr) == 0) 1976 break; 1977 } 1978 if (newns == NULL) 1979 isns_deregister(oldns); 1980 } 1981 1982 /* 1983 * XXX: If target or lun removal fails, we should somehow "move" 1984 * the old lun or target into newconf, so that subsequent 1985 * conf_apply() would try to remove them again. That would 1986 * be somewhat hairy, though, and lun deletion failures don't 1987 * really happen, so leave it as it is for now. 1988 */ 1989 /* 1990 * First, remove any ports present in the old configuration 1991 * and missing in the new one. 1992 */ 1993 TAILQ_FOREACH_SAFE(oldport, &oldconf->conf_ports, p_next, tmpport) { 1994 if (port_is_dummy(oldport)) 1995 continue; 1996 newport = port_find(newconf, oldport->p_name); 1997 if (newport != NULL && !port_is_dummy(newport)) 1998 continue; 1999 log_debugx("removing port \"%s\"", oldport->p_name); 2000 error = kernel_port_remove(oldport); 2001 if (error != 0) { 2002 log_warnx("failed to remove port %s", 2003 oldport->p_name); 2004 /* 2005 * XXX: Uncomment after fixing the root cause. 2006 * 2007 * cumulated_error++; 2008 */ 2009 } 2010 } 2011 2012 /* 2013 * Second, remove any LUNs present in the old configuration 2014 * and missing in the new one. 2015 */ 2016 TAILQ_FOREACH_SAFE(oldlun, &oldconf->conf_luns, l_next, tmplun) { 2017 newlun = lun_find(newconf, oldlun->l_name); 2018 if (newlun == NULL) { 2019 log_debugx("lun \"%s\", CTL lun %d " 2020 "not found in new configuration; " 2021 "removing", oldlun->l_name, oldlun->l_ctl_lun); 2022 error = kernel_lun_remove(oldlun); 2023 if (error != 0) { 2024 log_warnx("failed to remove lun \"%s\", " 2025 "CTL lun %d", 2026 oldlun->l_name, oldlun->l_ctl_lun); 2027 cumulated_error++; 2028 } 2029 continue; 2030 } 2031 2032 /* 2033 * Also remove the LUNs changed by more than size. 2034 */ 2035 changed = 0; 2036 assert(oldlun->l_backend != NULL); 2037 assert(newlun->l_backend != NULL); 2038 if (strcmp(newlun->l_backend, oldlun->l_backend) != 0) { 2039 log_debugx("backend for lun \"%s\", " 2040 "CTL lun %d changed; removing", 2041 oldlun->l_name, oldlun->l_ctl_lun); 2042 changed = 1; 2043 } 2044 if (oldlun->l_blocksize != newlun->l_blocksize) { 2045 log_debugx("blocksize for lun \"%s\", " 2046 "CTL lun %d changed; removing", 2047 oldlun->l_name, oldlun->l_ctl_lun); 2048 changed = 1; 2049 } 2050 if (newlun->l_device_id != NULL && 2051 (oldlun->l_device_id == NULL || 2052 strcmp(oldlun->l_device_id, newlun->l_device_id) != 2053 0)) { 2054 log_debugx("device-id for lun \"%s\", " 2055 "CTL lun %d changed; removing", 2056 oldlun->l_name, oldlun->l_ctl_lun); 2057 changed = 1; 2058 } 2059 if (newlun->l_path != NULL && 2060 (oldlun->l_path == NULL || 2061 strcmp(oldlun->l_path, newlun->l_path) != 0)) { 2062 log_debugx("path for lun \"%s\", " 2063 "CTL lun %d, changed; removing", 2064 oldlun->l_name, oldlun->l_ctl_lun); 2065 changed = 1; 2066 } 2067 if (newlun->l_serial != NULL && 2068 (oldlun->l_serial == NULL || 2069 strcmp(oldlun->l_serial, newlun->l_serial) != 0)) { 2070 log_debugx("serial for lun \"%s\", " 2071 "CTL lun %d changed; removing", 2072 oldlun->l_name, oldlun->l_ctl_lun); 2073 changed = 1; 2074 } 2075 if (changed) { 2076 error = kernel_lun_remove(oldlun); 2077 if (error != 0) { 2078 log_warnx("failed to remove lun \"%s\", " 2079 "CTL lun %d", 2080 oldlun->l_name, oldlun->l_ctl_lun); 2081 cumulated_error++; 2082 } 2083 lun_delete(oldlun); 2084 continue; 2085 } 2086 2087 lun_set_ctl_lun(newlun, oldlun->l_ctl_lun); 2088 } 2089 2090 TAILQ_FOREACH_SAFE(newlun, &newconf->conf_luns, l_next, tmplun) { 2091 oldlun = lun_find(oldconf, newlun->l_name); 2092 if (oldlun != NULL) { 2093 log_debugx("modifying lun \"%s\", CTL lun %d", 2094 newlun->l_name, newlun->l_ctl_lun); 2095 error = kernel_lun_modify(newlun); 2096 if (error != 0) { 2097 log_warnx("failed to " 2098 "modify lun \"%s\", CTL lun %d", 2099 newlun->l_name, newlun->l_ctl_lun); 2100 cumulated_error++; 2101 } 2102 continue; 2103 } 2104 log_debugx("adding lun \"%s\"", newlun->l_name); 2105 error = kernel_lun_add(newlun); 2106 if (error != 0) { 2107 log_warnx("failed to add lun \"%s\"", newlun->l_name); 2108 lun_delete(newlun); 2109 cumulated_error++; 2110 } 2111 } 2112 2113 /* 2114 * Now add new ports or modify existing ones. 2115 */ 2116 TAILQ_FOREACH(newport, &newconf->conf_ports, p_next) { 2117 if (port_is_dummy(newport)) 2118 continue; 2119 oldport = port_find(oldconf, newport->p_name); 2120 2121 if (oldport == NULL || port_is_dummy(oldport)) { 2122 log_debugx("adding port \"%s\"", newport->p_name); 2123 error = kernel_port_add(newport); 2124 } else { 2125 log_debugx("updating port \"%s\"", newport->p_name); 2126 newport->p_ctl_port = oldport->p_ctl_port; 2127 error = kernel_port_update(newport, oldport); 2128 } 2129 if (error != 0) { 2130 log_warnx("failed to %s port %s", 2131 (oldport == NULL) ? "add" : "update", 2132 newport->p_name); 2133 /* 2134 * XXX: Uncomment after fixing the root cause. 2135 * 2136 * cumulated_error++; 2137 */ 2138 } 2139 } 2140 2141 /* 2142 * Go through the new portals, opening the sockets as necessary. 2143 */ 2144 TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) { 2145 if (newpg->pg_foreign) 2146 continue; 2147 if (newpg->pg_unassigned) { 2148 log_debugx("not listening on portal-group \"%s\", " 2149 "not assigned to any target", 2150 newpg->pg_name); 2151 continue; 2152 } 2153 TAILQ_FOREACH(newp, &newpg->pg_portals, p_next) { 2154 /* 2155 * Try to find already open portal and reuse 2156 * the listening socket. We don't care about 2157 * what portal or portal group that was, what 2158 * matters is the listening address. 2159 */ 2160 TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups, 2161 pg_next) { 2162 TAILQ_FOREACH(oldp, &oldpg->pg_portals, 2163 p_next) { 2164 if (strcmp(newp->p_listen, 2165 oldp->p_listen) == 0 && 2166 oldp->p_socket > 0) { 2167 newp->p_socket = 2168 oldp->p_socket; 2169 oldp->p_socket = 0; 2170 break; 2171 } 2172 } 2173 } 2174 if (newp->p_socket > 0) { 2175 /* 2176 * We're done with this portal. 2177 */ 2178 continue; 2179 } 2180 2181 #ifdef ICL_KERNEL_PROXY 2182 if (proxy_mode) { 2183 newpg->pg_conf->conf_portal_id++; 2184 newp->p_id = newpg->pg_conf->conf_portal_id; 2185 log_debugx("listening on %s, portal-group " 2186 "\"%s\", portal id %d, using ICL proxy", 2187 newp->p_listen, newpg->pg_name, newp->p_id); 2188 kernel_listen(newp->p_ai, newp->p_iser, 2189 newp->p_id); 2190 continue; 2191 } 2192 #endif 2193 assert(proxy_mode == false); 2194 assert(newp->p_iser == false); 2195 2196 log_debugx("listening on %s, portal-group \"%s\"", 2197 newp->p_listen, newpg->pg_name); 2198 newp->p_socket = socket(newp->p_ai->ai_family, 2199 newp->p_ai->ai_socktype, 2200 newp->p_ai->ai_protocol); 2201 if (newp->p_socket < 0) { 2202 log_warn("socket(2) failed for %s", 2203 newp->p_listen); 2204 cumulated_error++; 2205 continue; 2206 } 2207 sockbuf = SOCKBUF_SIZE; 2208 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_RCVBUF, 2209 &sockbuf, sizeof(sockbuf)) == -1) 2210 log_warn("setsockopt(SO_RCVBUF) failed " 2211 "for %s", newp->p_listen); 2212 sockbuf = SOCKBUF_SIZE; 2213 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_SNDBUF, 2214 &sockbuf, sizeof(sockbuf)) == -1) 2215 log_warn("setsockopt(SO_SNDBUF) failed " 2216 "for %s", newp->p_listen); 2217 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_NO_DDP, 2218 &one, sizeof(one)) == -1) 2219 log_warn("setsockopt(SO_NO_DDP) failed " 2220 "for %s", newp->p_listen); 2221 error = setsockopt(newp->p_socket, SOL_SOCKET, 2222 SO_REUSEADDR, &one, sizeof(one)); 2223 if (error != 0) { 2224 log_warn("setsockopt(SO_REUSEADDR) failed " 2225 "for %s", newp->p_listen); 2226 close(newp->p_socket); 2227 newp->p_socket = 0; 2228 cumulated_error++; 2229 continue; 2230 } 2231 if (newpg->pg_dscp != -1) { 2232 struct sockaddr sa; 2233 int len = sizeof(sa); 2234 getsockname(newp->p_socket, &sa, &len); 2235 /* 2236 * Only allow the 6-bit DSCP 2237 * field to be modified 2238 */ 2239 int tos = newpg->pg_dscp << 2; 2240 if (sa.sa_family == AF_INET) { 2241 if (setsockopt(newp->p_socket, 2242 IPPROTO_IP, IP_TOS, 2243 &tos, sizeof(tos)) == -1) 2244 log_warn("setsockopt(IP_TOS) " 2245 "failed for %s", 2246 newp->p_listen); 2247 } else 2248 if (sa.sa_family == AF_INET6) { 2249 if (setsockopt(newp->p_socket, 2250 IPPROTO_IPV6, IPV6_TCLASS, 2251 &tos, sizeof(tos)) == -1) 2252 log_warn("setsockopt(IPV6_TCLASS) " 2253 "failed for %s", 2254 newp->p_listen); 2255 } 2256 } 2257 if (newpg->pg_pcp != -1) { 2258 struct sockaddr sa; 2259 int len = sizeof(sa); 2260 getsockname(newp->p_socket, &sa, &len); 2261 /* 2262 * Only allow the 6-bit DSCP 2263 * field to be modified 2264 */ 2265 int pcp = newpg->pg_pcp; 2266 if (sa.sa_family == AF_INET) { 2267 if (setsockopt(newp->p_socket, 2268 IPPROTO_IP, IP_VLAN_PCP, 2269 &pcp, sizeof(pcp)) == -1) 2270 log_warn("setsockopt(IP_VLAN_PCP) " 2271 "failed for %s", 2272 newp->p_listen); 2273 } else 2274 if (sa.sa_family == AF_INET6) { 2275 if (setsockopt(newp->p_socket, 2276 IPPROTO_IPV6, IPV6_VLAN_PCP, 2277 &pcp, sizeof(pcp)) == -1) 2278 log_warn("setsockopt(IPV6_VLAN_PCP) " 2279 "failed for %s", 2280 newp->p_listen); 2281 } 2282 } 2283 error = bind(newp->p_socket, newp->p_ai->ai_addr, 2284 newp->p_ai->ai_addrlen); 2285 if (error != 0) { 2286 log_warn("bind(2) failed for %s", 2287 newp->p_listen); 2288 close(newp->p_socket); 2289 newp->p_socket = 0; 2290 cumulated_error++; 2291 continue; 2292 } 2293 error = listen(newp->p_socket, -1); 2294 if (error != 0) { 2295 log_warn("listen(2) failed for %s", 2296 newp->p_listen); 2297 close(newp->p_socket); 2298 newp->p_socket = 0; 2299 cumulated_error++; 2300 continue; 2301 } 2302 } 2303 } 2304 2305 /* 2306 * Go through the no longer used sockets, closing them. 2307 */ 2308 TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups, pg_next) { 2309 TAILQ_FOREACH(oldp, &oldpg->pg_portals, p_next) { 2310 if (oldp->p_socket <= 0) 2311 continue; 2312 log_debugx("closing socket for %s, portal-group \"%s\"", 2313 oldp->p_listen, oldpg->pg_name); 2314 close(oldp->p_socket); 2315 oldp->p_socket = 0; 2316 } 2317 } 2318 2319 /* (Re-)Register on remaining/new iSNS servers. */ 2320 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) { 2321 TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) { 2322 if (strcmp(oldns->i_addr, newns->i_addr) == 0) 2323 break; 2324 } 2325 isns_register(newns, oldns); 2326 } 2327 2328 /* Schedule iSNS update */ 2329 if (!TAILQ_EMPTY(&newconf->conf_isns)) 2330 set_timeout((newconf->conf_isns_period + 2) / 3, false); 2331 2332 return (cumulated_error); 2333 } 2334 2335 static bool 2336 timed_out(void) 2337 { 2338 2339 return (sigalrm_received); 2340 } 2341 2342 static void 2343 sigalrm_handler_fatal(int dummy __unused) 2344 { 2345 /* 2346 * It would be easiest to just log an error and exit. We can't 2347 * do this, though, because log_errx() is not signal safe, since 2348 * it calls syslog(3). Instead, set a flag checked by pdu_send() 2349 * and pdu_receive(), to call log_errx() there. Should they fail 2350 * to notice, we'll exit here one second later. 2351 */ 2352 if (sigalrm_received) { 2353 /* 2354 * Oh well. Just give up and quit. 2355 */ 2356 _exit(2); 2357 } 2358 2359 sigalrm_received = true; 2360 } 2361 2362 static void 2363 sigalrm_handler(int dummy __unused) 2364 { 2365 2366 sigalrm_received = true; 2367 } 2368 2369 void 2370 set_timeout(int timeout, int fatal) 2371 { 2372 struct sigaction sa; 2373 struct itimerval itv; 2374 int error; 2375 2376 if (timeout <= 0) { 2377 log_debugx("session timeout disabled"); 2378 bzero(&itv, sizeof(itv)); 2379 error = setitimer(ITIMER_REAL, &itv, NULL); 2380 if (error != 0) 2381 log_err(1, "setitimer"); 2382 sigalrm_received = false; 2383 return; 2384 } 2385 2386 sigalrm_received = false; 2387 bzero(&sa, sizeof(sa)); 2388 if (fatal) 2389 sa.sa_handler = sigalrm_handler_fatal; 2390 else 2391 sa.sa_handler = sigalrm_handler; 2392 sigfillset(&sa.sa_mask); 2393 error = sigaction(SIGALRM, &sa, NULL); 2394 if (error != 0) 2395 log_err(1, "sigaction"); 2396 2397 /* 2398 * First SIGALRM will arive after conf_timeout seconds. 2399 * If we do nothing, another one will arrive a second later. 2400 */ 2401 log_debugx("setting session timeout to %d seconds", timeout); 2402 bzero(&itv, sizeof(itv)); 2403 itv.it_interval.tv_sec = 1; 2404 itv.it_value.tv_sec = timeout; 2405 error = setitimer(ITIMER_REAL, &itv, NULL); 2406 if (error != 0) 2407 log_err(1, "setitimer"); 2408 } 2409 2410 static int 2411 wait_for_children(bool block) 2412 { 2413 pid_t pid; 2414 int status; 2415 int num = 0; 2416 2417 for (;;) { 2418 /* 2419 * If "block" is true, wait for at least one process. 2420 */ 2421 if (block && num == 0) 2422 pid = wait4(-1, &status, 0, NULL); 2423 else 2424 pid = wait4(-1, &status, WNOHANG, NULL); 2425 if (pid <= 0) 2426 break; 2427 if (WIFSIGNALED(status)) { 2428 log_warnx("child process %d terminated with signal %d", 2429 pid, WTERMSIG(status)); 2430 } else if (WEXITSTATUS(status) != 0) { 2431 log_warnx("child process %d terminated with exit status %d", 2432 pid, WEXITSTATUS(status)); 2433 } else { 2434 log_debugx("child process %d terminated gracefully", pid); 2435 } 2436 num++; 2437 } 2438 2439 return (num); 2440 } 2441 2442 static void 2443 handle_connection(struct portal *portal, int fd, 2444 const struct sockaddr *client_sa, bool dont_fork) 2445 { 2446 struct ctld_connection *conn; 2447 int error; 2448 pid_t pid; 2449 char host[NI_MAXHOST + 1]; 2450 struct conf *conf; 2451 2452 conf = portal->p_portal_group->pg_conf; 2453 2454 if (dont_fork) { 2455 log_debugx("incoming connection; not forking due to -d flag"); 2456 } else { 2457 nchildren -= wait_for_children(false); 2458 assert(nchildren >= 0); 2459 2460 while (conf->conf_maxproc > 0 && nchildren >= conf->conf_maxproc) { 2461 log_debugx("maxproc limit of %d child processes hit; " 2462 "waiting for child process to exit", conf->conf_maxproc); 2463 nchildren -= wait_for_children(true); 2464 assert(nchildren >= 0); 2465 } 2466 log_debugx("incoming connection; forking child process #%d", 2467 nchildren); 2468 nchildren++; 2469 pid = fork(); 2470 if (pid < 0) 2471 log_err(1, "fork"); 2472 if (pid > 0) { 2473 close(fd); 2474 return; 2475 } 2476 } 2477 pidfile_close(conf->conf_pidfh); 2478 2479 error = getnameinfo(client_sa, client_sa->sa_len, 2480 host, sizeof(host), NULL, 0, NI_NUMERICHOST); 2481 if (error != 0) 2482 log_errx(1, "getnameinfo: %s", gai_strerror(error)); 2483 2484 log_debugx("accepted connection from %s; portal group \"%s\"", 2485 host, portal->p_portal_group->pg_name); 2486 log_set_peer_addr(host); 2487 setproctitle("%s", host); 2488 2489 conn = connection_new(portal, fd, host, client_sa); 2490 set_timeout(conf->conf_timeout, true); 2491 kernel_capsicate(); 2492 login(conn); 2493 if (conn->conn_session_type == CONN_SESSION_TYPE_NORMAL) { 2494 kernel_handoff(conn); 2495 log_debugx("connection handed off to the kernel"); 2496 } else { 2497 assert(conn->conn_session_type == CONN_SESSION_TYPE_DISCOVERY); 2498 discovery(conn); 2499 } 2500 log_debugx("nothing more to do; exiting"); 2501 exit(0); 2502 } 2503 2504 static int 2505 fd_add(int fd, fd_set *fdset, int nfds) 2506 { 2507 2508 /* 2509 * Skip sockets which we failed to bind. 2510 */ 2511 if (fd <= 0) 2512 return (nfds); 2513 2514 FD_SET(fd, fdset); 2515 if (fd > nfds) 2516 nfds = fd; 2517 return (nfds); 2518 } 2519 2520 static void 2521 main_loop(struct conf *conf, bool dont_fork) 2522 { 2523 struct portal_group *pg; 2524 struct portal *portal; 2525 struct sockaddr_storage client_sa; 2526 socklen_t client_salen; 2527 #ifdef ICL_KERNEL_PROXY 2528 int connection_id; 2529 int portal_id; 2530 #endif 2531 fd_set fdset; 2532 int error, nfds, client_fd; 2533 2534 pidfile_write(conf->conf_pidfh); 2535 2536 for (;;) { 2537 if (sighup_received || sigterm_received || timed_out()) 2538 return; 2539 2540 #ifdef ICL_KERNEL_PROXY 2541 if (proxy_mode) { 2542 client_salen = sizeof(client_sa); 2543 kernel_accept(&connection_id, &portal_id, 2544 (struct sockaddr *)&client_sa, &client_salen); 2545 assert(client_salen >= client_sa.ss_len); 2546 2547 log_debugx("incoming connection, id %d, portal id %d", 2548 connection_id, portal_id); 2549 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) { 2550 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) { 2551 if (portal->p_id == portal_id) { 2552 goto found; 2553 } 2554 } 2555 } 2556 2557 log_errx(1, "kernel returned invalid portal_id %d", 2558 portal_id); 2559 2560 found: 2561 handle_connection(portal, connection_id, 2562 (struct sockaddr *)&client_sa, dont_fork); 2563 } else { 2564 #endif 2565 assert(proxy_mode == false); 2566 2567 FD_ZERO(&fdset); 2568 nfds = 0; 2569 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) { 2570 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) 2571 nfds = fd_add(portal->p_socket, &fdset, nfds); 2572 } 2573 error = select(nfds + 1, &fdset, NULL, NULL, NULL); 2574 if (error <= 0) { 2575 if (errno == EINTR) 2576 return; 2577 log_err(1, "select"); 2578 } 2579 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) { 2580 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) { 2581 if (!FD_ISSET(portal->p_socket, &fdset)) 2582 continue; 2583 client_salen = sizeof(client_sa); 2584 client_fd = accept(portal->p_socket, 2585 (struct sockaddr *)&client_sa, 2586 &client_salen); 2587 if (client_fd < 0) { 2588 if (errno == ECONNABORTED) 2589 continue; 2590 log_err(1, "accept"); 2591 } 2592 assert(client_salen >= client_sa.ss_len); 2593 2594 handle_connection(portal, client_fd, 2595 (struct sockaddr *)&client_sa, 2596 dont_fork); 2597 break; 2598 } 2599 } 2600 #ifdef ICL_KERNEL_PROXY 2601 } 2602 #endif 2603 } 2604 } 2605 2606 static void 2607 sighup_handler(int dummy __unused) 2608 { 2609 2610 sighup_received = true; 2611 } 2612 2613 static void 2614 sigterm_handler(int dummy __unused) 2615 { 2616 2617 sigterm_received = true; 2618 } 2619 2620 static void 2621 sigchld_handler(int dummy __unused) 2622 { 2623 2624 /* 2625 * The only purpose of this handler is to make SIGCHLD 2626 * interrupt the ISCSIDWAIT ioctl(2), so we can call 2627 * wait_for_children(). 2628 */ 2629 } 2630 2631 static void 2632 register_signals(void) 2633 { 2634 struct sigaction sa; 2635 int error; 2636 2637 bzero(&sa, sizeof(sa)); 2638 sa.sa_handler = sighup_handler; 2639 sigfillset(&sa.sa_mask); 2640 error = sigaction(SIGHUP, &sa, NULL); 2641 if (error != 0) 2642 log_err(1, "sigaction"); 2643 2644 sa.sa_handler = sigterm_handler; 2645 error = sigaction(SIGTERM, &sa, NULL); 2646 if (error != 0) 2647 log_err(1, "sigaction"); 2648 2649 sa.sa_handler = sigterm_handler; 2650 error = sigaction(SIGINT, &sa, NULL); 2651 if (error != 0) 2652 log_err(1, "sigaction"); 2653 2654 sa.sa_handler = sigchld_handler; 2655 error = sigaction(SIGCHLD, &sa, NULL); 2656 if (error != 0) 2657 log_err(1, "sigaction"); 2658 } 2659 2660 static void 2661 check_perms(const char *path) 2662 { 2663 struct stat sb; 2664 int error; 2665 2666 error = stat(path, &sb); 2667 if (error != 0) { 2668 log_warn("stat"); 2669 return; 2670 } 2671 if (sb.st_mode & S_IWOTH) { 2672 log_warnx("%s is world-writable", path); 2673 } else if (sb.st_mode & S_IROTH) { 2674 log_warnx("%s is world-readable", path); 2675 } else if (sb.st_mode & S_IXOTH) { 2676 /* 2677 * Ok, this one doesn't matter, but still do it, 2678 * just for consistency. 2679 */ 2680 log_warnx("%s is world-executable", path); 2681 } 2682 2683 /* 2684 * XXX: Should we also check for owner != 0? 2685 */ 2686 } 2687 2688 static struct conf * 2689 conf_new_from_file(const char *path, struct conf *oldconf, bool ucl) 2690 { 2691 struct conf *conf; 2692 struct auth_group *ag; 2693 struct portal_group *pg; 2694 struct pport *pp; 2695 int error; 2696 2697 log_debugx("obtaining configuration from %s", path); 2698 2699 conf = conf_new(); 2700 2701 TAILQ_FOREACH(pp, &oldconf->conf_pports, pp_next) 2702 pport_copy(pp, conf); 2703 2704 ag = auth_group_new(conf, "default"); 2705 assert(ag != NULL); 2706 2707 ag = auth_group_new(conf, "no-authentication"); 2708 assert(ag != NULL); 2709 ag->ag_type = AG_TYPE_NO_AUTHENTICATION; 2710 2711 ag = auth_group_new(conf, "no-access"); 2712 assert(ag != NULL); 2713 ag->ag_type = AG_TYPE_DENY; 2714 2715 pg = portal_group_new(conf, "default"); 2716 assert(pg != NULL); 2717 2718 if (ucl) 2719 error = uclparse_conf(conf, path); 2720 else 2721 error = parse_conf(conf, path); 2722 2723 if (error != 0) { 2724 conf_delete(conf); 2725 return (NULL); 2726 } 2727 2728 check_perms(path); 2729 2730 if (conf->conf_default_ag_defined == false) { 2731 log_debugx("auth-group \"default\" not defined; " 2732 "going with defaults"); 2733 ag = auth_group_find(conf, "default"); 2734 assert(ag != NULL); 2735 ag->ag_type = AG_TYPE_DENY; 2736 } 2737 2738 if (conf->conf_default_pg_defined == false) { 2739 log_debugx("portal-group \"default\" not defined; " 2740 "going with defaults"); 2741 pg = portal_group_find(conf, "default"); 2742 assert(pg != NULL); 2743 portal_group_add_listen(pg, "0.0.0.0:3260", false); 2744 portal_group_add_listen(pg, "[::]:3260", false); 2745 } 2746 2747 conf->conf_kernel_port_on = true; 2748 2749 error = conf_verify(conf); 2750 if (error != 0) { 2751 conf_delete(conf); 2752 return (NULL); 2753 } 2754 2755 return (conf); 2756 } 2757 2758 int 2759 main(int argc, char **argv) 2760 { 2761 struct conf *oldconf, *newconf, *tmpconf; 2762 struct isns *newns; 2763 const char *config_path = DEFAULT_CONFIG_PATH; 2764 int debug = 0, ch, error; 2765 bool dont_daemonize = false; 2766 bool test_config = false; 2767 bool use_ucl = false; 2768 2769 while ((ch = getopt(argc, argv, "dtuf:R")) != -1) { 2770 switch (ch) { 2771 case 'd': 2772 dont_daemonize = true; 2773 debug++; 2774 break; 2775 case 't': 2776 test_config = true; 2777 break; 2778 case 'u': 2779 use_ucl = true; 2780 break; 2781 case 'f': 2782 config_path = optarg; 2783 break; 2784 case 'R': 2785 #ifndef ICL_KERNEL_PROXY 2786 log_errx(1, "ctld(8) compiled without ICL_KERNEL_PROXY " 2787 "does not support iSER protocol"); 2788 #endif 2789 proxy_mode = true; 2790 break; 2791 case '?': 2792 default: 2793 usage(); 2794 } 2795 } 2796 argc -= optind; 2797 if (argc != 0) 2798 usage(); 2799 2800 log_init(debug); 2801 kernel_init(); 2802 2803 oldconf = conf_new_from_kernel(); 2804 newconf = conf_new_from_file(config_path, oldconf, use_ucl); 2805 2806 if (newconf == NULL) 2807 log_errx(1, "configuration error; exiting"); 2808 2809 if (test_config) 2810 return (0); 2811 2812 if (debug > 0) { 2813 oldconf->conf_debug = debug; 2814 newconf->conf_debug = debug; 2815 } 2816 2817 error = conf_apply(oldconf, newconf); 2818 if (error != 0) 2819 log_errx(1, "failed to apply configuration; exiting"); 2820 2821 conf_delete(oldconf); 2822 oldconf = NULL; 2823 2824 register_signals(); 2825 2826 if (dont_daemonize == false) { 2827 log_debugx("daemonizing"); 2828 if (daemon(0, 0) == -1) { 2829 log_warn("cannot daemonize"); 2830 pidfile_remove(newconf->conf_pidfh); 2831 exit(1); 2832 } 2833 } 2834 2835 /* Schedule iSNS update */ 2836 if (!TAILQ_EMPTY(&newconf->conf_isns)) 2837 set_timeout((newconf->conf_isns_period + 2) / 3, false); 2838 2839 for (;;) { 2840 main_loop(newconf, dont_daemonize); 2841 if (sighup_received) { 2842 sighup_received = false; 2843 log_debugx("received SIGHUP, reloading configuration"); 2844 tmpconf = conf_new_from_file(config_path, newconf, 2845 use_ucl); 2846 2847 if (tmpconf == NULL) { 2848 log_warnx("configuration error, " 2849 "continuing with old configuration"); 2850 } else { 2851 if (debug > 0) 2852 tmpconf->conf_debug = debug; 2853 oldconf = newconf; 2854 newconf = tmpconf; 2855 error = conf_apply(oldconf, newconf); 2856 if (error != 0) 2857 log_warnx("failed to reload " 2858 "configuration"); 2859 conf_delete(oldconf); 2860 oldconf = NULL; 2861 } 2862 } else if (sigterm_received) { 2863 log_debugx("exiting on signal; " 2864 "reloading empty configuration"); 2865 2866 log_debugx("removing CTL iSCSI ports " 2867 "and terminating all connections"); 2868 2869 oldconf = newconf; 2870 newconf = conf_new(); 2871 if (debug > 0) 2872 newconf->conf_debug = debug; 2873 error = conf_apply(oldconf, newconf); 2874 if (error != 0) 2875 log_warnx("failed to apply configuration"); 2876 conf_delete(oldconf); 2877 oldconf = NULL; 2878 2879 log_warnx("exiting on signal"); 2880 exit(0); 2881 } else { 2882 nchildren -= wait_for_children(false); 2883 assert(nchildren >= 0); 2884 if (timed_out()) { 2885 set_timeout(0, false); 2886 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) 2887 isns_check(newns); 2888 /* Schedule iSNS update */ 2889 if (!TAILQ_EMPTY(&newconf->conf_isns)) { 2890 set_timeout((newconf->conf_isns_period 2891 + 2) / 3, 2892 false); 2893 } 2894 } 2895 } 2896 } 2897 /* NOTREACHED */ 2898 } 2899