2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 The FreeBSD Foundation
7 * This software was developed by Edward Tomasz Napierala under sponsorship
8 * from the FreeBSD Foundation.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/types.h>
38 #include <sys/socket.h>
41 #include <netinet/in.h>
42 #include <arpa/inet.h>
58 bool proxy_mode = false;
60 static volatile bool sighup_received = false;
61 static volatile bool sigterm_received = false;
62 static volatile bool sigalrm_received = false;
64 static int nchildren = 0;
65 static uint16_t last_portal_group_tag = 0xff;
71 fprintf(stderr, "usage: ctld [-d][-u][-f config-file]\n");
76 checked_strdup(const char *s)
91 conf = calloc(1, sizeof(*conf));
94 TAILQ_INIT(&conf->conf_luns);
95 TAILQ_INIT(&conf->conf_targets);
96 TAILQ_INIT(&conf->conf_auth_groups);
97 TAILQ_INIT(&conf->conf_ports);
98 TAILQ_INIT(&conf->conf_portal_groups);
99 TAILQ_INIT(&conf->conf_pports);
100 TAILQ_INIT(&conf->conf_isns);
102 conf->conf_isns_period = 900;
103 conf->conf_isns_timeout = 5;
104 conf->conf_debug = 0;
105 conf->conf_timeout = 60;
106 conf->conf_maxproc = 30;
112 conf_delete(struct conf *conf)
114 struct lun *lun, *ltmp;
115 struct target *targ, *tmp;
116 struct auth_group *ag, *cagtmp;
117 struct portal_group *pg, *cpgtmp;
118 struct pport *pp, *pptmp;
119 struct isns *is, *istmp;
121 assert(conf->conf_pidfh == NULL);
123 TAILQ_FOREACH_SAFE(lun, &conf->conf_luns, l_next, ltmp)
125 TAILQ_FOREACH_SAFE(targ, &conf->conf_targets, t_next, tmp)
127 TAILQ_FOREACH_SAFE(ag, &conf->conf_auth_groups, ag_next, cagtmp)
128 auth_group_delete(ag);
129 TAILQ_FOREACH_SAFE(pg, &conf->conf_portal_groups, pg_next, cpgtmp)
130 portal_group_delete(pg);
131 TAILQ_FOREACH_SAFE(pp, &conf->conf_pports, pp_next, pptmp)
133 TAILQ_FOREACH_SAFE(is, &conf->conf_isns, i_next, istmp)
135 assert(TAILQ_EMPTY(&conf->conf_ports));
136 free(conf->conf_pidfile_path);
141 auth_new(struct auth_group *ag)
145 auth = calloc(1, sizeof(*auth));
147 log_err(1, "calloc");
148 auth->a_auth_group = ag;
149 TAILQ_INSERT_TAIL(&ag->ag_auths, auth, a_next);
154 auth_delete(struct auth *auth)
156 TAILQ_REMOVE(&auth->a_auth_group->ag_auths, auth, a_next);
159 free(auth->a_secret);
160 free(auth->a_mutual_user);
161 free(auth->a_mutual_secret);
166 auth_find(const struct auth_group *ag, const char *user)
168 const struct auth *auth;
170 TAILQ_FOREACH(auth, &ag->ag_auths, a_next) {
171 if (strcmp(auth->a_user, user) == 0)
179 auth_check_secret_length(struct auth *auth)
183 len = strlen(auth->a_secret);
185 if (auth->a_auth_group->ag_name != NULL)
186 log_warnx("secret for user \"%s\", auth-group \"%s\", "
187 "is too long; it should be at most 16 characters "
188 "long", auth->a_user, auth->a_auth_group->ag_name);
190 log_warnx("secret for user \"%s\", target \"%s\", "
191 "is too long; it should be at most 16 characters "
192 "long", auth->a_user,
193 auth->a_auth_group->ag_target->t_name);
196 if (auth->a_auth_group->ag_name != NULL)
197 log_warnx("secret for user \"%s\", auth-group \"%s\", "
198 "is too short; it should be at least 12 characters "
199 "long", auth->a_user,
200 auth->a_auth_group->ag_name);
202 log_warnx("secret for user \"%s\", target \"%s\", "
203 "is too short; it should be at least 12 characters "
204 "long", auth->a_user,
205 auth->a_auth_group->ag_target->t_name);
208 if (auth->a_mutual_secret != NULL) {
209 len = strlen(auth->a_mutual_secret);
211 if (auth->a_auth_group->ag_name != NULL)
212 log_warnx("mutual secret for user \"%s\", "
213 "auth-group \"%s\", is too long; it should "
214 "be at most 16 characters long",
215 auth->a_user, auth->a_auth_group->ag_name);
217 log_warnx("mutual secret for user \"%s\", "
218 "target \"%s\", is too long; it should "
219 "be at most 16 characters long",
221 auth->a_auth_group->ag_target->t_name);
224 if (auth->a_auth_group->ag_name != NULL)
225 log_warnx("mutual secret for user \"%s\", "
226 "auth-group \"%s\", is too short; it "
227 "should be at least 12 characters long",
228 auth->a_user, auth->a_auth_group->ag_name);
230 log_warnx("mutual secret for user \"%s\", "
231 "target \"%s\", is too short; it should be "
232 "at least 12 characters long",
234 auth->a_auth_group->ag_target->t_name);
240 auth_new_chap(struct auth_group *ag, const char *user,
245 if (ag->ag_type == AG_TYPE_UNKNOWN)
246 ag->ag_type = AG_TYPE_CHAP;
247 if (ag->ag_type != AG_TYPE_CHAP) {
248 if (ag->ag_name != NULL)
249 log_warnx("cannot mix \"chap\" authentication with "
250 "other types for auth-group \"%s\"", ag->ag_name);
252 log_warnx("cannot mix \"chap\" authentication with "
253 "other types for target \"%s\"",
254 ag->ag_target->t_name);
259 auth->a_user = checked_strdup(user);
260 auth->a_secret = checked_strdup(secret);
262 auth_check_secret_length(auth);
268 auth_new_chap_mutual(struct auth_group *ag, const char *user,
269 const char *secret, const char *user2, const char *secret2)
273 if (ag->ag_type == AG_TYPE_UNKNOWN)
274 ag->ag_type = AG_TYPE_CHAP_MUTUAL;
275 if (ag->ag_type != AG_TYPE_CHAP_MUTUAL) {
276 if (ag->ag_name != NULL)
277 log_warnx("cannot mix \"chap-mutual\" authentication "
278 "with other types for auth-group \"%s\"",
281 log_warnx("cannot mix \"chap-mutual\" authentication "
282 "with other types for target \"%s\"",
283 ag->ag_target->t_name);
288 auth->a_user = checked_strdup(user);
289 auth->a_secret = checked_strdup(secret);
290 auth->a_mutual_user = checked_strdup(user2);
291 auth->a_mutual_secret = checked_strdup(secret2);
293 auth_check_secret_length(auth);
298 const struct auth_name *
299 auth_name_new(struct auth_group *ag, const char *name)
301 struct auth_name *an;
303 an = calloc(1, sizeof(*an));
305 log_err(1, "calloc");
306 an->an_auth_group = ag;
307 an->an_initator_name = checked_strdup(name);
308 TAILQ_INSERT_TAIL(&ag->ag_names, an, an_next);
313 auth_name_delete(struct auth_name *an)
315 TAILQ_REMOVE(&an->an_auth_group->ag_names, an, an_next);
317 free(an->an_initator_name);
322 auth_name_defined(const struct auth_group *ag)
324 if (TAILQ_EMPTY(&ag->ag_names))
329 const struct auth_name *
330 auth_name_find(const struct auth_group *ag, const char *name)
332 const struct auth_name *auth_name;
334 TAILQ_FOREACH(auth_name, &ag->ag_names, an_next) {
335 if (strcmp(auth_name->an_initator_name, name) == 0)
343 auth_name_check(const struct auth_group *ag, const char *initiator_name)
345 if (!auth_name_defined(ag))
348 if (auth_name_find(ag, initiator_name) == NULL)
354 const struct auth_portal *
355 auth_portal_new(struct auth_group *ag, const char *portal)
357 struct auth_portal *ap;
358 char *net, *mask, *str, *tmp;
361 ap = calloc(1, sizeof(*ap));
363 log_err(1, "calloc");
364 ap->ap_auth_group = ag;
365 ap->ap_initator_portal = checked_strdup(portal);
366 mask = str = checked_strdup(portal);
367 net = strsep(&mask, "/");
373 if (net[len - 1] == ']')
375 if (strchr(net, ':') != NULL) {
376 struct sockaddr_in6 *sin6 =
377 (struct sockaddr_in6 *)&ap->ap_sa;
379 sin6->sin6_len = sizeof(*sin6);
380 sin6->sin6_family = AF_INET6;
381 if (inet_pton(AF_INET6, net, &sin6->sin6_addr) <= 0)
385 struct sockaddr_in *sin =
386 (struct sockaddr_in *)&ap->ap_sa;
388 sin->sin_len = sizeof(*sin);
389 sin->sin_family = AF_INET;
390 if (inet_pton(AF_INET, net, &sin->sin_addr) <= 0)
395 m = strtol(mask, &tmp, 0);
396 if (m < 0 || m > dm || tmp[0] != 0)
402 TAILQ_INSERT_TAIL(&ag->ag_portals, ap, ap_next);
408 log_warnx("incorrect initiator portal \"%s\"", portal);
413 auth_portal_delete(struct auth_portal *ap)
415 TAILQ_REMOVE(&ap->ap_auth_group->ag_portals, ap, ap_next);
417 free(ap->ap_initator_portal);
422 auth_portal_defined(const struct auth_group *ag)
424 if (TAILQ_EMPTY(&ag->ag_portals))
429 const struct auth_portal *
430 auth_portal_find(const struct auth_group *ag, const struct sockaddr_storage *ss)
432 const struct auth_portal *ap;
433 const uint8_t *a, *b;
437 TAILQ_FOREACH(ap, &ag->ag_portals, ap_next) {
438 if (ap->ap_sa.ss_family != ss->ss_family)
440 if (ss->ss_family == AF_INET) {
441 a = (const uint8_t *)
442 &((const struct sockaddr_in *)ss)->sin_addr;
443 b = (const uint8_t *)
444 &((const struct sockaddr_in *)&ap->ap_sa)->sin_addr;
446 a = (const uint8_t *)
447 &((const struct sockaddr_in6 *)ss)->sin6_addr;
448 b = (const uint8_t *)
449 &((const struct sockaddr_in6 *)&ap->ap_sa)->sin6_addr;
451 for (i = 0; i < ap->ap_mask / 8; i++) {
455 if (ap->ap_mask % 8) {
456 bmask = 0xff << (8 - (ap->ap_mask % 8));
457 if ((a[i] & bmask) != (b[i] & bmask))
469 auth_portal_check(const struct auth_group *ag, const struct sockaddr_storage *sa)
472 if (!auth_portal_defined(ag))
475 if (auth_portal_find(ag, sa) == NULL)
482 auth_group_new(struct conf *conf, const char *name)
484 struct auth_group *ag;
487 ag = auth_group_find(conf, name);
489 log_warnx("duplicated auth-group \"%s\"", name);
494 ag = calloc(1, sizeof(*ag));
496 log_err(1, "calloc");
498 ag->ag_name = checked_strdup(name);
499 TAILQ_INIT(&ag->ag_auths);
500 TAILQ_INIT(&ag->ag_names);
501 TAILQ_INIT(&ag->ag_portals);
503 TAILQ_INSERT_TAIL(&conf->conf_auth_groups, ag, ag_next);
509 auth_group_delete(struct auth_group *ag)
511 struct auth *auth, *auth_tmp;
512 struct auth_name *auth_name, *auth_name_tmp;
513 struct auth_portal *auth_portal, *auth_portal_tmp;
515 TAILQ_REMOVE(&ag->ag_conf->conf_auth_groups, ag, ag_next);
517 TAILQ_FOREACH_SAFE(auth, &ag->ag_auths, a_next, auth_tmp)
519 TAILQ_FOREACH_SAFE(auth_name, &ag->ag_names, an_next, auth_name_tmp)
520 auth_name_delete(auth_name);
521 TAILQ_FOREACH_SAFE(auth_portal, &ag->ag_portals, ap_next,
523 auth_portal_delete(auth_portal);
529 auth_group_find(const struct conf *conf, const char *name)
531 struct auth_group *ag;
533 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
534 if (ag->ag_name != NULL && strcmp(ag->ag_name, name) == 0)
542 auth_group_set_type(struct auth_group *ag, const char *str)
546 if (strcmp(str, "none") == 0) {
547 type = AG_TYPE_NO_AUTHENTICATION;
548 } else if (strcmp(str, "deny") == 0) {
550 } else if (strcmp(str, "chap") == 0) {
552 } else if (strcmp(str, "chap-mutual") == 0) {
553 type = AG_TYPE_CHAP_MUTUAL;
555 if (ag->ag_name != NULL)
556 log_warnx("invalid auth-type \"%s\" for auth-group "
557 "\"%s\"", str, ag->ag_name);
559 log_warnx("invalid auth-type \"%s\" for target "
560 "\"%s\"", str, ag->ag_target->t_name);
564 if (ag->ag_type != AG_TYPE_UNKNOWN && ag->ag_type != type) {
565 if (ag->ag_name != NULL) {
566 log_warnx("cannot set auth-type to \"%s\" for "
567 "auth-group \"%s\"; already has a different "
568 "type", str, ag->ag_name);
570 log_warnx("cannot set auth-type to \"%s\" for target "
571 "\"%s\"; already has a different type",
572 str, ag->ag_target->t_name);
582 static struct portal *
583 portal_new(struct portal_group *pg)
585 struct portal *portal;
587 portal = calloc(1, sizeof(*portal));
589 log_err(1, "calloc");
590 TAILQ_INIT(&portal->p_targets);
591 portal->p_portal_group = pg;
592 TAILQ_INSERT_TAIL(&pg->pg_portals, portal, p_next);
597 portal_delete(struct portal *portal)
600 TAILQ_REMOVE(&portal->p_portal_group->pg_portals, portal, p_next);
601 if (portal->p_ai != NULL)
602 freeaddrinfo(portal->p_ai);
603 free(portal->p_listen);
607 struct portal_group *
608 portal_group_new(struct conf *conf, const char *name)
610 struct portal_group *pg;
612 pg = portal_group_find(conf, name);
614 log_warnx("duplicated portal-group \"%s\"", name);
618 pg = calloc(1, sizeof(*pg));
620 log_err(1, "calloc");
621 pg->pg_name = checked_strdup(name);
622 TAILQ_INIT(&pg->pg_options);
623 TAILQ_INIT(&pg->pg_portals);
624 TAILQ_INIT(&pg->pg_ports);
626 pg->pg_tag = 0; /* Assigned later in conf_apply(). */
627 TAILQ_INSERT_TAIL(&conf->conf_portal_groups, pg, pg_next);
633 portal_group_delete(struct portal_group *pg)
635 struct portal *portal, *tmp;
636 struct port *port, *tport;
637 struct option *o, *otmp;
639 TAILQ_FOREACH_SAFE(port, &pg->pg_ports, p_pgs, tport)
641 TAILQ_REMOVE(&pg->pg_conf->conf_portal_groups, pg, pg_next);
643 TAILQ_FOREACH_SAFE(portal, &pg->pg_portals, p_next, tmp)
644 portal_delete(portal);
645 TAILQ_FOREACH_SAFE(o, &pg->pg_options, o_next, otmp)
646 option_delete(&pg->pg_options, o);
648 free(pg->pg_offload);
649 free(pg->pg_redirection);
653 struct portal_group *
654 portal_group_find(const struct conf *conf, const char *name)
656 struct portal_group *pg;
658 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
659 if (strcmp(pg->pg_name, name) == 0)
667 parse_addr_port(char *arg, const char *def_port, struct addrinfo **ai)
669 struct addrinfo hints;
670 char *str, *addr, *ch;
672 int error, colons = 0;
674 str = arg = strdup(arg);
677 * IPv6 address in square brackets, perhaps with port.
680 addr = strsep(&arg, "]");
685 if (arg[0] == '\0') {
687 } else if (arg[0] == ':') {
695 * Either IPv6 address without brackets - and without
696 * a port - or IPv4 address. Just count the colons.
698 for (ch = arg; *ch != '\0'; ch++) {
706 addr = strsep(&arg, ":");
714 memset(&hints, 0, sizeof(hints));
715 hints.ai_family = PF_UNSPEC;
716 hints.ai_socktype = SOCK_STREAM;
717 hints.ai_flags = AI_PASSIVE;
718 error = getaddrinfo(addr, port, &hints, ai);
720 return ((error != 0) ? 1 : 0);
724 portal_group_add_listen(struct portal_group *pg, const char *value, bool iser)
726 struct portal *portal;
728 portal = portal_new(pg);
729 portal->p_listen = checked_strdup(value);
730 portal->p_iser = iser;
732 if (parse_addr_port(portal->p_listen, "3260", &portal->p_ai)) {
733 log_warnx("invalid listen address %s", portal->p_listen);
734 portal_delete(portal);
739 * XXX: getaddrinfo(3) may return multiple addresses; we should turn
740 * those into multiple portals.
747 isns_new(struct conf *conf, const char *addr)
751 isns = calloc(1, sizeof(*isns));
753 log_err(1, "calloc");
755 TAILQ_INSERT_TAIL(&conf->conf_isns, isns, i_next);
756 isns->i_addr = checked_strdup(addr);
758 if (parse_addr_port(isns->i_addr, "3205", &isns->i_ai)) {
759 log_warnx("invalid iSNS address %s", isns->i_addr);
765 * XXX: getaddrinfo(3) may return multiple addresses; we should turn
766 * those into multiple servers.
773 isns_delete(struct isns *isns)
776 TAILQ_REMOVE(&isns->i_conf->conf_isns, isns, i_next);
778 if (isns->i_ai != NULL)
779 freeaddrinfo(isns->i_ai);
784 isns_do_connect(struct isns *isns)
788 s = socket(isns->i_ai->ai_family, isns->i_ai->ai_socktype,
789 isns->i_ai->ai_protocol);
791 log_warn("socket(2) failed for %s", isns->i_addr);
794 if (connect(s, isns->i_ai->ai_addr, isns->i_ai->ai_addrlen)) {
795 log_warn("connect(2) failed for %s", isns->i_addr);
803 isns_do_register(struct isns *isns, int s, const char *hostname)
805 struct conf *conf = isns->i_conf;
806 struct target *target;
807 struct portal *portal;
808 struct portal_group *pg;
810 struct isns_req *req;
814 req = isns_req_create(ISNS_FUNC_DEVATTRREG, ISNS_FLAG_CLIENT);
815 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
816 isns_req_add_delim(req);
817 isns_req_add_str(req, 1, hostname);
818 isns_req_add_32(req, 2, 2); /* 2 -- iSCSI */
819 isns_req_add_32(req, 6, conf->conf_isns_period);
820 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
821 if (pg->pg_unassigned)
823 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
824 isns_req_add_addr(req, 16, portal->p_ai);
825 isns_req_add_port(req, 17, portal->p_ai);
828 TAILQ_FOREACH(target, &conf->conf_targets, t_next) {
829 isns_req_add_str(req, 32, target->t_name);
830 isns_req_add_32(req, 33, 1); /* 1 -- Target*/
831 if (target->t_alias != NULL)
832 isns_req_add_str(req, 34, target->t_alias);
833 TAILQ_FOREACH(port, &target->t_ports, p_ts) {
834 if ((pg = port->p_portal_group) == NULL)
836 isns_req_add_32(req, 51, pg->pg_tag);
837 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
838 isns_req_add_addr(req, 49, portal->p_ai);
839 isns_req_add_port(req, 50, portal->p_ai);
843 res = isns_req_send(s, req);
845 log_warn("send(2) failed for %s", isns->i_addr);
848 res = isns_req_receive(s, req);
850 log_warn("receive(2) failed for %s", isns->i_addr);
853 error = isns_req_get_status(req);
855 log_warnx("iSNS register error %d for %s", error, isns->i_addr);
864 isns_do_check(struct isns *isns, int s, const char *hostname)
866 struct conf *conf = isns->i_conf;
867 struct isns_req *req;
871 req = isns_req_create(ISNS_FUNC_DEVATTRQRY, ISNS_FLAG_CLIENT);
872 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
873 isns_req_add_str(req, 1, hostname);
874 isns_req_add_delim(req);
875 isns_req_add(req, 2, 0, NULL);
876 res = isns_req_send(s, req);
878 log_warn("send(2) failed for %s", isns->i_addr);
881 res = isns_req_receive(s, req);
883 log_warn("receive(2) failed for %s", isns->i_addr);
886 error = isns_req_get_status(req);
888 log_warnx("iSNS check error %d for %s", error, isns->i_addr);
897 isns_do_deregister(struct isns *isns, int s, const char *hostname)
899 struct conf *conf = isns->i_conf;
900 struct isns_req *req;
904 req = isns_req_create(ISNS_FUNC_DEVDEREG, ISNS_FLAG_CLIENT);
905 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
906 isns_req_add_delim(req);
907 isns_req_add_str(req, 1, hostname);
908 res = isns_req_send(s, req);
910 log_warn("send(2) failed for %s", isns->i_addr);
913 res = isns_req_receive(s, req);
915 log_warn("receive(2) failed for %s", isns->i_addr);
918 error = isns_req_get_status(req);
920 log_warnx("iSNS deregister error %d for %s", error, isns->i_addr);
929 isns_register(struct isns *isns, struct isns *oldisns)
931 struct conf *conf = isns->i_conf;
935 if (TAILQ_EMPTY(&conf->conf_targets) ||
936 TAILQ_EMPTY(&conf->conf_portal_groups))
938 set_timeout(conf->conf_isns_timeout, false);
939 s = isns_do_connect(isns);
941 set_timeout(0, false);
944 gethostname(hostname, sizeof(hostname));
946 if (oldisns == NULL || TAILQ_EMPTY(&oldisns->i_conf->conf_targets))
948 isns_do_deregister(oldisns, s, hostname);
949 isns_do_register(isns, s, hostname);
951 set_timeout(0, false);
955 isns_check(struct isns *isns)
957 struct conf *conf = isns->i_conf;
961 if (TAILQ_EMPTY(&conf->conf_targets) ||
962 TAILQ_EMPTY(&conf->conf_portal_groups))
964 set_timeout(conf->conf_isns_timeout, false);
965 s = isns_do_connect(isns);
967 set_timeout(0, false);
970 gethostname(hostname, sizeof(hostname));
972 res = isns_do_check(isns, s, hostname);
974 isns_do_deregister(isns, s, hostname);
975 isns_do_register(isns, s, hostname);
978 set_timeout(0, false);
982 isns_deregister(struct isns *isns)
984 struct conf *conf = isns->i_conf;
988 if (TAILQ_EMPTY(&conf->conf_targets) ||
989 TAILQ_EMPTY(&conf->conf_portal_groups))
991 set_timeout(conf->conf_isns_timeout, false);
992 s = isns_do_connect(isns);
995 gethostname(hostname, sizeof(hostname));
997 isns_do_deregister(isns, s, hostname);
999 set_timeout(0, false);
1003 portal_group_set_filter(struct portal_group *pg, const char *str)
1007 if (strcmp(str, "none") == 0) {
1008 filter = PG_FILTER_NONE;
1009 } else if (strcmp(str, "portal") == 0) {
1010 filter = PG_FILTER_PORTAL;
1011 } else if (strcmp(str, "portal-name") == 0) {
1012 filter = PG_FILTER_PORTAL_NAME;
1013 } else if (strcmp(str, "portal-name-auth") == 0) {
1014 filter = PG_FILTER_PORTAL_NAME_AUTH;
1016 log_warnx("invalid discovery-filter \"%s\" for portal-group "
1017 "\"%s\"; valid values are \"none\", \"portal\", "
1018 "\"portal-name\", and \"portal-name-auth\"",
1023 if (pg->pg_discovery_filter != PG_FILTER_UNKNOWN &&
1024 pg->pg_discovery_filter != filter) {
1025 log_warnx("cannot set discovery-filter to \"%s\" for "
1026 "portal-group \"%s\"; already has a different "
1027 "value", str, pg->pg_name);
1031 pg->pg_discovery_filter = filter;
1037 portal_group_set_offload(struct portal_group *pg, const char *offload)
1040 if (pg->pg_offload != NULL) {
1041 log_warnx("cannot set offload to \"%s\" for "
1042 "portal-group \"%s\"; already defined",
1043 offload, pg->pg_name);
1047 pg->pg_offload = checked_strdup(offload);
1053 portal_group_set_redirection(struct portal_group *pg, const char *addr)
1056 if (pg->pg_redirection != NULL) {
1057 log_warnx("cannot set redirection to \"%s\" for "
1058 "portal-group \"%s\"; already defined",
1063 pg->pg_redirection = checked_strdup(addr);
1069 valid_hex(const char ch)
1101 valid_iscsi_name(const char *name)
1105 if (strlen(name) >= MAX_NAME_LEN) {
1106 log_warnx("overlong name for target \"%s\"; max length allowed "
1107 "by iSCSI specification is %d characters",
1108 name, MAX_NAME_LEN);
1113 * In the cases below, we don't return an error, just in case the admin
1114 * was right, and we're wrong.
1116 if (strncasecmp(name, "iqn.", strlen("iqn.")) == 0) {
1117 for (i = strlen("iqn."); name[i] != '\0'; i++) {
1119 * XXX: We should verify UTF-8 normalisation, as defined
1120 * by 3.2.6.2: iSCSI Name Encoding.
1122 if (isalnum(name[i]))
1124 if (name[i] == '-' || name[i] == '.' || name[i] == ':')
1126 log_warnx("invalid character \"%c\" in target name "
1127 "\"%s\"; allowed characters are letters, digits, "
1128 "'-', '.', and ':'", name[i], name);
1132 * XXX: Check more stuff: valid date and a valid reversed domain.
1134 } else if (strncasecmp(name, "eui.", strlen("eui.")) == 0) {
1135 if (strlen(name) != strlen("eui.") + 16)
1136 log_warnx("invalid target name \"%s\"; the \"eui.\" "
1137 "should be followed by exactly 16 hexadecimal "
1139 for (i = strlen("eui."); name[i] != '\0'; i++) {
1140 if (!valid_hex(name[i])) {
1141 log_warnx("invalid character \"%c\" in target "
1142 "name \"%s\"; allowed characters are 1-9 "
1143 "and A-F", name[i], name);
1147 } else if (strncasecmp(name, "naa.", strlen("naa.")) == 0) {
1148 if (strlen(name) > strlen("naa.") + 32)
1149 log_warnx("invalid target name \"%s\"; the \"naa.\" "
1150 "should be followed by at most 32 hexadecimal "
1152 for (i = strlen("naa."); 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);
1161 log_warnx("invalid target name \"%s\"; should start with "
1162 "either \"iqn.\", \"eui.\", or \"naa.\"",
1169 pport_new(struct conf *conf, const char *name, uint32_t ctl_port)
1173 pp = calloc(1, sizeof(*pp));
1175 log_err(1, "calloc");
1177 pp->pp_name = checked_strdup(name);
1178 pp->pp_ctl_port = ctl_port;
1179 TAILQ_INIT(&pp->pp_ports);
1180 TAILQ_INSERT_TAIL(&conf->conf_pports, pp, pp_next);
1185 pport_find(const struct conf *conf, const char *name)
1189 TAILQ_FOREACH(pp, &conf->conf_pports, pp_next) {
1190 if (strcasecmp(pp->pp_name, name) == 0)
1197 pport_copy(struct pport *pp, struct conf *conf)
1199 struct pport *ppnew;
1201 ppnew = pport_new(conf, pp->pp_name, pp->pp_ctl_port);
1206 pport_delete(struct pport *pp)
1208 struct port *port, *tport;
1210 TAILQ_FOREACH_SAFE(port, &pp->pp_ports, p_ts, tport)
1212 TAILQ_REMOVE(&pp->pp_conf->conf_pports, pp, pp_next);
1218 port_new(struct conf *conf, struct target *target, struct portal_group *pg)
1224 ret = asprintf(&name, "%s-%s", pg->pg_name, target->t_name);
1226 log_err(1, "asprintf");
1227 if (port_find(conf, name) != NULL) {
1228 log_warnx("duplicate port \"%s\"", name);
1232 port = calloc(1, sizeof(*port));
1234 log_err(1, "calloc");
1235 port->p_conf = conf;
1236 port->p_name = name;
1237 port->p_ioctl_port = 0;
1238 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next);
1239 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts);
1240 port->p_target = target;
1241 TAILQ_INSERT_TAIL(&pg->pg_ports, port, p_pgs);
1242 port->p_portal_group = pg;
1247 port_new_ioctl(struct conf *conf, struct target *target, int pp, int vp)
1249 struct pport *pport;
1255 ret = asprintf(&pname, "ioctl/%d/%d", pp, vp);
1257 log_err(1, "asprintf");
1261 pport = pport_find(conf, pname);
1262 if (pport != NULL) {
1264 return (port_new_pp(conf, target, pport));
1267 ret = asprintf(&name, "%s-%s", pname, target->t_name);
1271 log_err(1, "asprintf");
1272 if (port_find(conf, name) != NULL) {
1273 log_warnx("duplicate port \"%s\"", name);
1277 port = calloc(1, sizeof(*port));
1279 log_err(1, "calloc");
1280 port->p_conf = conf;
1281 port->p_name = name;
1282 port->p_ioctl_port = 1;
1283 port->p_ioctl_pp = pp;
1284 port->p_ioctl_vp = vp;
1285 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next);
1286 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts);
1287 port->p_target = target;
1292 port_new_pp(struct conf *conf, struct target *target, struct pport *pp)
1298 ret = asprintf(&name, "%s-%s", pp->pp_name, target->t_name);
1300 log_err(1, "asprintf");
1301 if (port_find(conf, name) != NULL) {
1302 log_warnx("duplicate port \"%s\"", name);
1306 port = calloc(1, sizeof(*port));
1308 log_err(1, "calloc");
1309 port->p_conf = conf;
1310 port->p_name = name;
1311 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next);
1312 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts);
1313 port->p_target = target;
1314 TAILQ_INSERT_TAIL(&pp->pp_ports, port, p_pps);
1320 port_find(const struct conf *conf, const char *name)
1324 TAILQ_FOREACH(port, &conf->conf_ports, p_next) {
1325 if (strcasecmp(port->p_name, name) == 0)
1333 port_find_in_pg(const struct portal_group *pg, const char *target)
1337 TAILQ_FOREACH(port, &pg->pg_ports, p_pgs) {
1338 if (strcasecmp(port->p_target->t_name, target) == 0)
1346 port_delete(struct port *port)
1349 if (port->p_portal_group)
1350 TAILQ_REMOVE(&port->p_portal_group->pg_ports, port, p_pgs);
1352 TAILQ_REMOVE(&port->p_pport->pp_ports, port, p_pps);
1354 TAILQ_REMOVE(&port->p_target->t_ports, port, p_ts);
1355 TAILQ_REMOVE(&port->p_conf->conf_ports, port, p_next);
1361 port_is_dummy(struct port *port)
1364 if (port->p_portal_group) {
1365 if (port->p_portal_group->pg_foreign)
1367 if (TAILQ_EMPTY(&port->p_portal_group->pg_portals))
1374 target_new(struct conf *conf, const char *name)
1376 struct target *targ;
1379 targ = target_find(conf, name);
1381 log_warnx("duplicated target \"%s\"", name);
1384 if (valid_iscsi_name(name) == false) {
1385 log_warnx("target name \"%s\" is invalid", name);
1388 targ = calloc(1, sizeof(*targ));
1390 log_err(1, "calloc");
1391 targ->t_name = checked_strdup(name);
1394 * RFC 3722 requires us to normalize the name to lowercase.
1397 for (i = 0; i < len; i++)
1398 targ->t_name[i] = tolower(targ->t_name[i]);
1400 targ->t_conf = conf;
1401 TAILQ_INIT(&targ->t_ports);
1402 TAILQ_INSERT_TAIL(&conf->conf_targets, targ, t_next);
1408 target_delete(struct target *targ)
1410 struct port *port, *tport;
1412 TAILQ_FOREACH_SAFE(port, &targ->t_ports, p_ts, tport)
1414 TAILQ_REMOVE(&targ->t_conf->conf_targets, targ, t_next);
1417 free(targ->t_redirection);
1422 target_find(struct conf *conf, const char *name)
1424 struct target *targ;
1426 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1427 if (strcasecmp(targ->t_name, name) == 0)
1435 target_set_redirection(struct target *target, const char *addr)
1438 if (target->t_redirection != NULL) {
1439 log_warnx("cannot set redirection to \"%s\" for "
1440 "target \"%s\"; already defined",
1441 addr, target->t_name);
1445 target->t_redirection = checked_strdup(addr);
1451 lun_new(struct conf *conf, const char *name)
1455 lun = lun_find(conf, name);
1457 log_warnx("duplicated lun \"%s\"", name);
1461 lun = calloc(1, sizeof(*lun));
1463 log_err(1, "calloc");
1465 lun->l_name = checked_strdup(name);
1466 TAILQ_INIT(&lun->l_options);
1467 TAILQ_INSERT_TAIL(&conf->conf_luns, lun, l_next);
1468 lun->l_ctl_lun = -1;
1474 lun_delete(struct lun *lun)
1476 struct target *targ;
1477 struct option *o, *tmp;
1480 TAILQ_FOREACH(targ, &lun->l_conf->conf_targets, t_next) {
1481 for (i = 0; i < MAX_LUNS; i++) {
1482 if (targ->t_luns[i] == lun)
1483 targ->t_luns[i] = NULL;
1486 TAILQ_REMOVE(&lun->l_conf->conf_luns, lun, l_next);
1488 TAILQ_FOREACH_SAFE(o, &lun->l_options, o_next, tmp)
1489 option_delete(&lun->l_options, o);
1491 free(lun->l_backend);
1492 free(lun->l_device_id);
1494 free(lun->l_scsiname);
1495 free(lun->l_serial);
1500 lun_find(const struct conf *conf, const char *name)
1504 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1505 if (strcmp(lun->l_name, name) == 0)
1513 lun_set_backend(struct lun *lun, const char *value)
1515 free(lun->l_backend);
1516 lun->l_backend = checked_strdup(value);
1520 lun_set_blocksize(struct lun *lun, size_t value)
1523 lun->l_blocksize = value;
1527 lun_set_device_type(struct lun *lun, uint8_t value)
1530 lun->l_device_type = value;
1534 lun_set_device_id(struct lun *lun, const char *value)
1536 free(lun->l_device_id);
1537 lun->l_device_id = checked_strdup(value);
1541 lun_set_path(struct lun *lun, const char *value)
1544 lun->l_path = checked_strdup(value);
1548 lun_set_scsiname(struct lun *lun, const char *value)
1550 free(lun->l_scsiname);
1551 lun->l_scsiname = checked_strdup(value);
1555 lun_set_serial(struct lun *lun, const char *value)
1557 free(lun->l_serial);
1558 lun->l_serial = checked_strdup(value);
1562 lun_set_size(struct lun *lun, size_t value)
1565 lun->l_size = value;
1569 lun_set_ctl_lun(struct lun *lun, uint32_t value)
1572 lun->l_ctl_lun = value;
1576 option_new(struct options *options, const char *name, const char *value)
1580 o = option_find(options, name);
1582 log_warnx("duplicated option \"%s\"", name);
1586 o = calloc(1, sizeof(*o));
1588 log_err(1, "calloc");
1589 o->o_name = checked_strdup(name);
1590 o->o_value = checked_strdup(value);
1591 TAILQ_INSERT_TAIL(options, o, o_next);
1597 option_delete(struct options *options, struct option *o)
1600 TAILQ_REMOVE(options, o, o_next);
1607 option_find(const struct options *options, const char *name)
1611 TAILQ_FOREACH(o, options, o_next) {
1612 if (strcmp(o->o_name, name) == 0)
1620 option_set(struct option *o, const char *value)
1624 o->o_value = checked_strdup(value);
1627 static struct connection *
1628 connection_new(struct portal *portal, int fd, const char *host,
1629 const struct sockaddr *client_sa)
1631 struct connection *conn;
1633 conn = calloc(1, sizeof(*conn));
1635 log_err(1, "calloc");
1636 conn->conn_portal = portal;
1637 conn->conn_socket = fd;
1638 conn->conn_initiator_addr = checked_strdup(host);
1639 memcpy(&conn->conn_initiator_sa, client_sa, client_sa->sa_len);
1642 * Default values, from RFC 3720, section 12.
1644 conn->conn_max_recv_data_segment_length = 8192;
1645 conn->conn_max_send_data_segment_length = 8192;
1646 conn->conn_max_burst_length = 262144;
1647 conn->conn_first_burst_length = 65536;
1648 conn->conn_immediate_data = true;
1655 conf_print(struct conf *conf)
1657 struct auth_group *ag;
1659 struct auth_name *auth_name;
1660 struct auth_portal *auth_portal;
1661 struct portal_group *pg;
1662 struct portal *portal;
1663 struct target *targ;
1667 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
1668 fprintf(stderr, "auth-group %s {\n", ag->ag_name);
1669 TAILQ_FOREACH(auth, &ag->ag_auths, a_next)
1670 fprintf(stderr, "\t chap-mutual %s %s %s %s\n",
1671 auth->a_user, auth->a_secret,
1672 auth->a_mutual_user, auth->a_mutual_secret);
1673 TAILQ_FOREACH(auth_name, &ag->ag_names, an_next)
1674 fprintf(stderr, "\t initiator-name %s\n",
1675 auth_name->an_initator_name);
1676 TAILQ_FOREACH(auth_portal, &ag->ag_portals, ap_next)
1677 fprintf(stderr, "\t initiator-portal %s\n",
1678 auth_portal->ap_initator_portal);
1679 fprintf(stderr, "}\n");
1681 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1682 fprintf(stderr, "portal-group %s {\n", pg->pg_name);
1683 TAILQ_FOREACH(portal, &pg->pg_portals, p_next)
1684 fprintf(stderr, "\t listen %s\n", portal->p_listen);
1685 fprintf(stderr, "}\n");
1687 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1688 fprintf(stderr, "\tlun %s {\n", lun->l_name);
1689 fprintf(stderr, "\t\tpath %s\n", lun->l_path);
1690 TAILQ_FOREACH(o, &lun->l_options, o_next)
1691 fprintf(stderr, "\t\toption %s %s\n",
1692 o->o_name, o->o_value);
1693 fprintf(stderr, "\t}\n");
1695 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1696 fprintf(stderr, "target %s {\n", targ->t_name);
1697 if (targ->t_alias != NULL)
1698 fprintf(stderr, "\t alias %s\n", targ->t_alias);
1699 fprintf(stderr, "}\n");
1705 conf_verify_lun(struct lun *lun)
1707 const struct lun *lun2;
1709 if (lun->l_backend == NULL)
1710 lun_set_backend(lun, "block");
1711 if (strcmp(lun->l_backend, "block") == 0) {
1712 if (lun->l_path == NULL) {
1713 log_warnx("missing path for lun \"%s\"",
1717 } else if (strcmp(lun->l_backend, "ramdisk") == 0) {
1718 if (lun->l_size == 0) {
1719 log_warnx("missing size for ramdisk-backed lun \"%s\"",
1723 if (lun->l_path != NULL) {
1724 log_warnx("path must not be specified "
1725 "for ramdisk-backed lun \"%s\"",
1730 if (lun->l_blocksize == 0) {
1731 if (lun->l_device_type == 5)
1732 lun_set_blocksize(lun, DEFAULT_CD_BLOCKSIZE);
1734 lun_set_blocksize(lun, DEFAULT_BLOCKSIZE);
1735 } else if (lun->l_blocksize < 0) {
1736 log_warnx("invalid blocksize for lun \"%s\"; "
1737 "must be larger than 0", lun->l_name);
1740 if (lun->l_size != 0 && lun->l_size % lun->l_blocksize != 0) {
1741 log_warnx("invalid size for lun \"%s\"; "
1742 "must be multiple of blocksize", lun->l_name);
1745 TAILQ_FOREACH(lun2, &lun->l_conf->conf_luns, l_next) {
1748 if (lun->l_path != NULL && lun2->l_path != NULL &&
1749 strcmp(lun->l_path, lun2->l_path) == 0) {
1750 log_debugx("WARNING: path \"%s\" duplicated "
1751 "between lun \"%s\", and "
1752 "lun \"%s\"", lun->l_path,
1753 lun->l_name, lun2->l_name);
1761 conf_verify(struct conf *conf)
1763 struct auth_group *ag;
1764 struct portal_group *pg;
1766 struct target *targ;
1771 if (conf->conf_pidfile_path == NULL)
1772 conf->conf_pidfile_path = checked_strdup(DEFAULT_PIDFILE);
1774 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1775 error = conf_verify_lun(lun);
1779 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1780 if (targ->t_auth_group == NULL) {
1781 targ->t_auth_group = auth_group_find(conf,
1783 assert(targ->t_auth_group != NULL);
1785 if (TAILQ_EMPTY(&targ->t_ports)) {
1786 pg = portal_group_find(conf, "default");
1788 port_new(conf, targ, pg);
1791 for (i = 0; i < MAX_LUNS; i++) {
1792 if (targ->t_luns[i] != NULL)
1795 if (!found && targ->t_redirection == NULL) {
1796 log_warnx("no LUNs defined for target \"%s\"",
1799 if (found && targ->t_redirection != NULL) {
1800 log_debugx("target \"%s\" contains luns, "
1801 " but configured for redirection",
1805 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1806 assert(pg->pg_name != NULL);
1807 if (pg->pg_discovery_auth_group == NULL) {
1808 pg->pg_discovery_auth_group =
1809 auth_group_find(conf, "default");
1810 assert(pg->pg_discovery_auth_group != NULL);
1813 if (pg->pg_discovery_filter == PG_FILTER_UNKNOWN)
1814 pg->pg_discovery_filter = PG_FILTER_NONE;
1816 if (pg->pg_redirection != NULL) {
1817 if (!TAILQ_EMPTY(&pg->pg_ports)) {
1818 log_debugx("portal-group \"%s\" assigned "
1819 "to target, but configured "
1823 pg->pg_unassigned = false;
1824 } else if (!TAILQ_EMPTY(&pg->pg_ports)) {
1825 pg->pg_unassigned = false;
1827 if (strcmp(pg->pg_name, "default") != 0)
1828 log_warnx("portal-group \"%s\" not assigned "
1829 "to any target", pg->pg_name);
1830 pg->pg_unassigned = true;
1833 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
1834 if (ag->ag_name == NULL)
1835 assert(ag->ag_target != NULL);
1837 assert(ag->ag_target == NULL);
1840 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1841 if (targ->t_auth_group == ag) {
1846 TAILQ_FOREACH(port, &conf->conf_ports, p_next) {
1847 if (port->p_auth_group == ag) {
1852 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1853 if (pg->pg_discovery_auth_group == ag) {
1858 if (!found && ag->ag_name != NULL &&
1859 strcmp(ag->ag_name, "default") != 0 &&
1860 strcmp(ag->ag_name, "no-authentication") != 0 &&
1861 strcmp(ag->ag_name, "no-access") != 0) {
1862 log_warnx("auth-group \"%s\" not assigned "
1863 "to any target", ag->ag_name);
1871 conf_apply(struct conf *oldconf, struct conf *newconf)
1873 struct lun *oldlun, *newlun, *tmplun;
1874 struct portal_group *oldpg, *newpg;
1875 struct portal *oldp, *newp;
1876 struct port *oldport, *newport, *tmpport;
1877 struct isns *oldns, *newns;
1879 int changed, cumulated_error = 0, error, sockbuf;
1882 if (oldconf->conf_debug != newconf->conf_debug) {
1883 log_debugx("changing debug level to %d", newconf->conf_debug);
1884 log_init(newconf->conf_debug);
1887 if (oldconf->conf_pidfh != NULL) {
1888 assert(oldconf->conf_pidfile_path != NULL);
1889 if (newconf->conf_pidfile_path != NULL &&
1890 strcmp(oldconf->conf_pidfile_path,
1891 newconf->conf_pidfile_path) == 0) {
1892 newconf->conf_pidfh = oldconf->conf_pidfh;
1893 oldconf->conf_pidfh = NULL;
1895 log_debugx("removing pidfile %s",
1896 oldconf->conf_pidfile_path);
1897 pidfile_remove(oldconf->conf_pidfh);
1898 oldconf->conf_pidfh = NULL;
1902 if (newconf->conf_pidfh == NULL && newconf->conf_pidfile_path != NULL) {
1903 log_debugx("opening pidfile %s", newconf->conf_pidfile_path);
1904 newconf->conf_pidfh =
1905 pidfile_open(newconf->conf_pidfile_path, 0600, &otherpid);
1906 if (newconf->conf_pidfh == NULL) {
1907 if (errno == EEXIST)
1908 log_errx(1, "daemon already running, pid: %jd.",
1909 (intmax_t)otherpid);
1910 log_err(1, "cannot open or create pidfile \"%s\"",
1911 newconf->conf_pidfile_path);
1916 * Go through the new portal groups, assigning tags or preserving old.
1918 TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
1919 if (newpg->pg_tag != 0)
1921 oldpg = portal_group_find(oldconf, newpg->pg_name);
1923 newpg->pg_tag = oldpg->pg_tag;
1925 newpg->pg_tag = ++last_portal_group_tag;
1928 /* Deregister on removed iSNS servers. */
1929 TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) {
1930 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) {
1931 if (strcmp(oldns->i_addr, newns->i_addr) == 0)
1935 isns_deregister(oldns);
1939 * XXX: If target or lun removal fails, we should somehow "move"
1940 * the old lun or target into newconf, so that subsequent
1941 * conf_apply() would try to remove them again. That would
1942 * be somewhat hairy, though, and lun deletion failures don't
1943 * really happen, so leave it as it is for now.
1946 * First, remove any ports present in the old configuration
1947 * and missing in the new one.
1949 TAILQ_FOREACH_SAFE(oldport, &oldconf->conf_ports, p_next, tmpport) {
1950 if (port_is_dummy(oldport))
1952 newport = port_find(newconf, oldport->p_name);
1953 if (newport != NULL && !port_is_dummy(newport))
1955 log_debugx("removing port \"%s\"", oldport->p_name);
1956 error = kernel_port_remove(oldport);
1958 log_warnx("failed to remove port %s",
1961 * XXX: Uncomment after fixing the root cause.
1963 * cumulated_error++;
1969 * Second, remove any LUNs present in the old configuration
1970 * and missing in the new one.
1972 TAILQ_FOREACH_SAFE(oldlun, &oldconf->conf_luns, l_next, tmplun) {
1973 newlun = lun_find(newconf, oldlun->l_name);
1974 if (newlun == NULL) {
1975 log_debugx("lun \"%s\", CTL lun %d "
1976 "not found in new configuration; "
1977 "removing", oldlun->l_name, oldlun->l_ctl_lun);
1978 error = kernel_lun_remove(oldlun);
1980 log_warnx("failed to remove lun \"%s\", "
1982 oldlun->l_name, oldlun->l_ctl_lun);
1989 * Also remove the LUNs changed by more than size.
1992 assert(oldlun->l_backend != NULL);
1993 assert(newlun->l_backend != NULL);
1994 if (strcmp(newlun->l_backend, oldlun->l_backend) != 0) {
1995 log_debugx("backend for lun \"%s\", "
1996 "CTL lun %d changed; removing",
1997 oldlun->l_name, oldlun->l_ctl_lun);
2000 if (oldlun->l_blocksize != newlun->l_blocksize) {
2001 log_debugx("blocksize for lun \"%s\", "
2002 "CTL lun %d changed; removing",
2003 oldlun->l_name, oldlun->l_ctl_lun);
2006 if (newlun->l_device_id != NULL &&
2007 (oldlun->l_device_id == NULL ||
2008 strcmp(oldlun->l_device_id, newlun->l_device_id) !=
2010 log_debugx("device-id for lun \"%s\", "
2011 "CTL lun %d changed; removing",
2012 oldlun->l_name, oldlun->l_ctl_lun);
2015 if (newlun->l_path != NULL &&
2016 (oldlun->l_path == NULL ||
2017 strcmp(oldlun->l_path, newlun->l_path) != 0)) {
2018 log_debugx("path for lun \"%s\", "
2019 "CTL lun %d, changed; removing",
2020 oldlun->l_name, oldlun->l_ctl_lun);
2023 if (newlun->l_serial != NULL &&
2024 (oldlun->l_serial == NULL ||
2025 strcmp(oldlun->l_serial, newlun->l_serial) != 0)) {
2026 log_debugx("serial for lun \"%s\", "
2027 "CTL lun %d changed; removing",
2028 oldlun->l_name, oldlun->l_ctl_lun);
2032 error = kernel_lun_remove(oldlun);
2034 log_warnx("failed to remove lun \"%s\", "
2036 oldlun->l_name, oldlun->l_ctl_lun);
2043 lun_set_ctl_lun(newlun, oldlun->l_ctl_lun);
2046 TAILQ_FOREACH_SAFE(newlun, &newconf->conf_luns, l_next, tmplun) {
2047 oldlun = lun_find(oldconf, newlun->l_name);
2048 if (oldlun != NULL) {
2049 log_debugx("modifying lun \"%s\", CTL lun %d",
2050 newlun->l_name, newlun->l_ctl_lun);
2051 error = kernel_lun_modify(newlun);
2053 log_warnx("failed to "
2054 "modify lun \"%s\", CTL lun %d",
2055 newlun->l_name, newlun->l_ctl_lun);
2060 log_debugx("adding lun \"%s\"", newlun->l_name);
2061 error = kernel_lun_add(newlun);
2063 log_warnx("failed to add lun \"%s\"", newlun->l_name);
2070 * Now add new ports or modify existing ones.
2072 TAILQ_FOREACH(newport, &newconf->conf_ports, p_next) {
2073 if (port_is_dummy(newport))
2075 oldport = port_find(oldconf, newport->p_name);
2077 if (oldport == NULL || port_is_dummy(oldport)) {
2078 log_debugx("adding port \"%s\"", newport->p_name);
2079 error = kernel_port_add(newport);
2081 log_debugx("updating port \"%s\"", newport->p_name);
2082 newport->p_ctl_port = oldport->p_ctl_port;
2083 error = kernel_port_update(newport, oldport);
2086 log_warnx("failed to %s port %s",
2087 (oldport == NULL) ? "add" : "update",
2090 * XXX: Uncomment after fixing the root cause.
2092 * cumulated_error++;
2098 * Go through the new portals, opening the sockets as necessary.
2100 TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
2101 if (newpg->pg_foreign)
2103 if (newpg->pg_unassigned) {
2104 log_debugx("not listening on portal-group \"%s\", "
2105 "not assigned to any target",
2109 TAILQ_FOREACH(newp, &newpg->pg_portals, p_next) {
2111 * Try to find already open portal and reuse
2112 * the listening socket. We don't care about
2113 * what portal or portal group that was, what
2114 * matters is the listening address.
2116 TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups,
2118 TAILQ_FOREACH(oldp, &oldpg->pg_portals,
2120 if (strcmp(newp->p_listen,
2121 oldp->p_listen) == 0 &&
2122 oldp->p_socket > 0) {
2130 if (newp->p_socket > 0) {
2132 * We're done with this portal.
2137 #ifdef ICL_KERNEL_PROXY
2139 newpg->pg_conf->conf_portal_id++;
2140 newp->p_id = newpg->pg_conf->conf_portal_id;
2141 log_debugx("listening on %s, portal-group "
2142 "\"%s\", portal id %d, using ICL proxy",
2143 newp->p_listen, newpg->pg_name, newp->p_id);
2144 kernel_listen(newp->p_ai, newp->p_iser,
2149 assert(proxy_mode == false);
2150 assert(newp->p_iser == false);
2152 log_debugx("listening on %s, portal-group \"%s\"",
2153 newp->p_listen, newpg->pg_name);
2154 newp->p_socket = socket(newp->p_ai->ai_family,
2155 newp->p_ai->ai_socktype,
2156 newp->p_ai->ai_protocol);
2157 if (newp->p_socket < 0) {
2158 log_warn("socket(2) failed for %s",
2163 sockbuf = SOCKBUF_SIZE;
2164 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_RCVBUF,
2165 &sockbuf, sizeof(sockbuf)) == -1)
2166 log_warn("setsockopt(SO_RCVBUF) failed "
2167 "for %s", newp->p_listen);
2168 sockbuf = SOCKBUF_SIZE;
2169 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_SNDBUF,
2170 &sockbuf, sizeof(sockbuf)) == -1)
2171 log_warn("setsockopt(SO_SNDBUF) failed "
2172 "for %s", newp->p_listen);
2173 error = setsockopt(newp->p_socket, SOL_SOCKET,
2174 SO_REUSEADDR, &one, sizeof(one));
2176 log_warn("setsockopt(SO_REUSEADDR) failed "
2177 "for %s", newp->p_listen);
2178 close(newp->p_socket);
2183 error = bind(newp->p_socket, newp->p_ai->ai_addr,
2184 newp->p_ai->ai_addrlen);
2186 log_warn("bind(2) failed for %s",
2188 close(newp->p_socket);
2193 error = listen(newp->p_socket, -1);
2195 log_warn("listen(2) failed for %s",
2197 close(newp->p_socket);
2206 * Go through the no longer used sockets, closing them.
2208 TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups, pg_next) {
2209 TAILQ_FOREACH(oldp, &oldpg->pg_portals, p_next) {
2210 if (oldp->p_socket <= 0)
2212 log_debugx("closing socket for %s, portal-group \"%s\"",
2213 oldp->p_listen, oldpg->pg_name);
2214 close(oldp->p_socket);
2219 /* (Re-)Register on remaining/new iSNS servers. */
2220 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) {
2221 TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) {
2222 if (strcmp(oldns->i_addr, newns->i_addr) == 0)
2225 isns_register(newns, oldns);
2228 /* Schedule iSNS update */
2229 if (!TAILQ_EMPTY(&newconf->conf_isns))
2230 set_timeout((newconf->conf_isns_period + 2) / 3, false);
2232 return (cumulated_error);
2239 return (sigalrm_received);
2243 sigalrm_handler_fatal(int dummy __unused)
2246 * It would be easiest to just log an error and exit. We can't
2247 * do this, though, because log_errx() is not signal safe, since
2248 * it calls syslog(3). Instead, set a flag checked by pdu_send()
2249 * and pdu_receive(), to call log_errx() there. Should they fail
2250 * to notice, we'll exit here one second later.
2252 if (sigalrm_received) {
2254 * Oh well. Just give up and quit.
2259 sigalrm_received = true;
2263 sigalrm_handler(int dummy __unused)
2266 sigalrm_received = true;
2270 set_timeout(int timeout, int fatal)
2272 struct sigaction sa;
2273 struct itimerval itv;
2277 log_debugx("session timeout disabled");
2278 bzero(&itv, sizeof(itv));
2279 error = setitimer(ITIMER_REAL, &itv, NULL);
2281 log_err(1, "setitimer");
2282 sigalrm_received = false;
2286 sigalrm_received = false;
2287 bzero(&sa, sizeof(sa));
2289 sa.sa_handler = sigalrm_handler_fatal;
2291 sa.sa_handler = sigalrm_handler;
2292 sigfillset(&sa.sa_mask);
2293 error = sigaction(SIGALRM, &sa, NULL);
2295 log_err(1, "sigaction");
2298 * First SIGALRM will arive after conf_timeout seconds.
2299 * If we do nothing, another one will arrive a second later.
2301 log_debugx("setting session timeout to %d seconds", timeout);
2302 bzero(&itv, sizeof(itv));
2303 itv.it_interval.tv_sec = 1;
2304 itv.it_value.tv_sec = timeout;
2305 error = setitimer(ITIMER_REAL, &itv, NULL);
2307 log_err(1, "setitimer");
2311 wait_for_children(bool block)
2319 * If "block" is true, wait for at least one process.
2321 if (block && num == 0)
2322 pid = wait4(-1, &status, 0, NULL);
2324 pid = wait4(-1, &status, WNOHANG, NULL);
2327 if (WIFSIGNALED(status)) {
2328 log_warnx("child process %d terminated with signal %d",
2329 pid, WTERMSIG(status));
2330 } else if (WEXITSTATUS(status) != 0) {
2331 log_warnx("child process %d terminated with exit status %d",
2332 pid, WEXITSTATUS(status));
2334 log_debugx("child process %d terminated gracefully", pid);
2343 handle_connection(struct portal *portal, int fd,
2344 const struct sockaddr *client_sa, bool dont_fork)
2346 struct connection *conn;
2349 char host[NI_MAXHOST + 1];
2352 conf = portal->p_portal_group->pg_conf;
2355 log_debugx("incoming connection; not forking due to -d flag");
2357 nchildren -= wait_for_children(false);
2358 assert(nchildren >= 0);
2360 while (conf->conf_maxproc > 0 && nchildren >= conf->conf_maxproc) {
2361 log_debugx("maxproc limit of %d child processes hit; "
2362 "waiting for child process to exit", conf->conf_maxproc);
2363 nchildren -= wait_for_children(true);
2364 assert(nchildren >= 0);
2366 log_debugx("incoming connection; forking child process #%d",
2377 pidfile_close(conf->conf_pidfh);
2379 error = getnameinfo(client_sa, client_sa->sa_len,
2380 host, sizeof(host), NULL, 0, NI_NUMERICHOST);
2382 log_errx(1, "getnameinfo: %s", gai_strerror(error));
2384 log_debugx("accepted connection from %s; portal group \"%s\"",
2385 host, portal->p_portal_group->pg_name);
2386 log_set_peer_addr(host);
2387 setproctitle("%s", host);
2389 conn = connection_new(portal, fd, host, client_sa);
2390 set_timeout(conf->conf_timeout, true);
2393 if (conn->conn_session_type == CONN_SESSION_TYPE_NORMAL) {
2394 kernel_handoff(conn);
2395 log_debugx("connection handed off to the kernel");
2397 assert(conn->conn_session_type == CONN_SESSION_TYPE_DISCOVERY);
2400 log_debugx("nothing more to do; exiting");
2405 fd_add(int fd, fd_set *fdset, int nfds)
2409 * Skip sockets which we failed to bind.
2421 main_loop(struct conf *conf, bool dont_fork)
2423 struct portal_group *pg;
2424 struct portal *portal;
2425 struct sockaddr_storage client_sa;
2426 socklen_t client_salen;
2427 #ifdef ICL_KERNEL_PROXY
2432 int error, nfds, client_fd;
2434 pidfile_write(conf->conf_pidfh);
2437 if (sighup_received || sigterm_received || timed_out())
2440 #ifdef ICL_KERNEL_PROXY
2442 client_salen = sizeof(client_sa);
2443 kernel_accept(&connection_id, &portal_id,
2444 (struct sockaddr *)&client_sa, &client_salen);
2445 assert(client_salen >= client_sa.ss_len);
2447 log_debugx("incoming connection, id %d, portal id %d",
2448 connection_id, portal_id);
2449 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2450 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
2451 if (portal->p_id == portal_id) {
2457 log_errx(1, "kernel returned invalid portal_id %d",
2461 handle_connection(portal, connection_id,
2462 (struct sockaddr *)&client_sa, dont_fork);
2465 assert(proxy_mode == false);
2469 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2470 TAILQ_FOREACH(portal, &pg->pg_portals, p_next)
2471 nfds = fd_add(portal->p_socket, &fdset, nfds);
2473 error = select(nfds + 1, &fdset, NULL, NULL, NULL);
2477 log_err(1, "select");
2479 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2480 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
2481 if (!FD_ISSET(portal->p_socket, &fdset))
2483 client_salen = sizeof(client_sa);
2484 client_fd = accept(portal->p_socket,
2485 (struct sockaddr *)&client_sa,
2487 if (client_fd < 0) {
2488 if (errno == ECONNABORTED)
2490 log_err(1, "accept");
2492 assert(client_salen >= client_sa.ss_len);
2494 handle_connection(portal, client_fd,
2495 (struct sockaddr *)&client_sa,
2500 #ifdef ICL_KERNEL_PROXY
2507 sighup_handler(int dummy __unused)
2510 sighup_received = true;
2514 sigterm_handler(int dummy __unused)
2517 sigterm_received = true;
2521 sigchld_handler(int dummy __unused)
2525 * The only purpose of this handler is to make SIGCHLD
2526 * interrupt the ISCSIDWAIT ioctl(2), so we can call
2527 * wait_for_children().
2532 register_signals(void)
2534 struct sigaction sa;
2537 bzero(&sa, sizeof(sa));
2538 sa.sa_handler = sighup_handler;
2539 sigfillset(&sa.sa_mask);
2540 error = sigaction(SIGHUP, &sa, NULL);
2542 log_err(1, "sigaction");
2544 sa.sa_handler = sigterm_handler;
2545 error = sigaction(SIGTERM, &sa, NULL);
2547 log_err(1, "sigaction");
2549 sa.sa_handler = sigterm_handler;
2550 error = sigaction(SIGINT, &sa, NULL);
2552 log_err(1, "sigaction");
2554 sa.sa_handler = sigchld_handler;
2555 error = sigaction(SIGCHLD, &sa, NULL);
2557 log_err(1, "sigaction");
2561 check_perms(const char *path)
2566 error = stat(path, &sb);
2571 if (sb.st_mode & S_IWOTH) {
2572 log_warnx("%s is world-writable", path);
2573 } else if (sb.st_mode & S_IROTH) {
2574 log_warnx("%s is world-readable", path);
2575 } else if (sb.st_mode & S_IXOTH) {
2577 * Ok, this one doesn't matter, but still do it,
2578 * just for consistency.
2580 log_warnx("%s is world-executable", path);
2584 * XXX: Should we also check for owner != 0?
2588 static struct conf *
2589 conf_new_from_file(const char *path, struct conf *oldconf, bool ucl)
2592 struct auth_group *ag;
2593 struct portal_group *pg;
2597 log_debugx("obtaining configuration from %s", path);
2601 TAILQ_FOREACH(pp, &oldconf->conf_pports, pp_next)
2602 pport_copy(pp, conf);
2604 ag = auth_group_new(conf, "default");
2607 ag = auth_group_new(conf, "no-authentication");
2609 ag->ag_type = AG_TYPE_NO_AUTHENTICATION;
2611 ag = auth_group_new(conf, "no-access");
2613 ag->ag_type = AG_TYPE_DENY;
2615 pg = portal_group_new(conf, "default");
2619 error = uclparse_conf(conf, path);
2621 error = parse_conf(conf, path);
2630 if (conf->conf_default_ag_defined == false) {
2631 log_debugx("auth-group \"default\" not defined; "
2632 "going with defaults");
2633 ag = auth_group_find(conf, "default");
2635 ag->ag_type = AG_TYPE_DENY;
2638 if (conf->conf_default_pg_defined == false) {
2639 log_debugx("portal-group \"default\" not defined; "
2640 "going with defaults");
2641 pg = portal_group_find(conf, "default");
2643 portal_group_add_listen(pg, "0.0.0.0:3260", false);
2644 portal_group_add_listen(pg, "[::]:3260", false);
2647 conf->conf_kernel_port_on = true;
2649 error = conf_verify(conf);
2659 main(int argc, char **argv)
2661 struct conf *oldconf, *newconf, *tmpconf;
2663 const char *config_path = DEFAULT_CONFIG_PATH;
2664 int debug = 0, ch, error;
2665 bool dont_daemonize = false;
2666 bool use_ucl = false;
2668 while ((ch = getopt(argc, argv, "duf:R")) != -1) {
2671 dont_daemonize = true;
2678 config_path = optarg;
2681 #ifndef ICL_KERNEL_PROXY
2682 log_errx(1, "ctld(8) compiled without ICL_KERNEL_PROXY "
2683 "does not support iSER protocol");
2699 oldconf = conf_new_from_kernel();
2700 newconf = conf_new_from_file(config_path, oldconf, use_ucl);
2702 if (newconf == NULL)
2703 log_errx(1, "configuration error; exiting");
2705 oldconf->conf_debug = debug;
2706 newconf->conf_debug = debug;
2709 error = conf_apply(oldconf, newconf);
2711 log_errx(1, "failed to apply configuration; exiting");
2713 conf_delete(oldconf);
2718 if (dont_daemonize == false) {
2719 log_debugx("daemonizing");
2720 if (daemon(0, 0) == -1) {
2721 log_warn("cannot daemonize");
2722 pidfile_remove(newconf->conf_pidfh);
2727 /* Schedule iSNS update */
2728 if (!TAILQ_EMPTY(&newconf->conf_isns))
2729 set_timeout((newconf->conf_isns_period + 2) / 3, false);
2732 main_loop(newconf, dont_daemonize);
2733 if (sighup_received) {
2734 sighup_received = false;
2735 log_debugx("received SIGHUP, reloading configuration");
2736 tmpconf = conf_new_from_file(config_path, newconf,
2739 if (tmpconf == NULL) {
2740 log_warnx("configuration error, "
2741 "continuing with old configuration");
2744 tmpconf->conf_debug = debug;
2747 error = conf_apply(oldconf, newconf);
2749 log_warnx("failed to reload "
2751 conf_delete(oldconf);
2754 } else if (sigterm_received) {
2755 log_debugx("exiting on signal; "
2756 "reloading empty configuration");
2758 log_debugx("removing CTL iSCSI ports "
2759 "and terminating all connections");
2762 newconf = conf_new();
2764 newconf->conf_debug = debug;
2765 error = conf_apply(oldconf, newconf);
2767 log_warnx("failed to apply configuration");
2768 conf_delete(oldconf);
2771 log_warnx("exiting on signal");
2774 nchildren -= wait_for_children(false);
2775 assert(nchildren >= 0);
2777 set_timeout(0, false);
2778 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next)
2780 /* Schedule iSNS update */
2781 if (!TAILQ_EMPTY(&newconf->conf_isns)) {
2782 set_timeout((newconf->conf_isns_period