2 * Copyright (c) 2012 The FreeBSD Foundation
5 * This software was developed by Edward Tomasz Napierala under sponsorship
6 * from the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/types.h>
36 #include <sys/socket.h>
38 #include <netinet/in.h>
39 #include <arpa/inet.h>
55 bool proxy_mode = false;
57 static volatile bool sighup_received = false;
58 static volatile bool sigterm_received = false;
59 static volatile bool sigalrm_received = false;
61 static int nchildren = 0;
62 static uint16_t last_portal_group_tag = 0;
68 fprintf(stderr, "usage: ctld [-d][-f config-file]\n");
73 checked_strdup(const char *s)
88 conf = calloc(1, sizeof(*conf));
91 TAILQ_INIT(&conf->conf_luns);
92 TAILQ_INIT(&conf->conf_targets);
93 TAILQ_INIT(&conf->conf_auth_groups);
94 TAILQ_INIT(&conf->conf_ports);
95 TAILQ_INIT(&conf->conf_portal_groups);
96 TAILQ_INIT(&conf->conf_pports);
97 TAILQ_INIT(&conf->conf_isns);
99 conf->conf_isns_period = 900;
100 conf->conf_isns_timeout = 5;
101 conf->conf_debug = 0;
102 conf->conf_timeout = 60;
103 conf->conf_maxproc = 30;
109 conf_delete(struct conf *conf)
111 struct lun *lun, *ltmp;
112 struct target *targ, *tmp;
113 struct auth_group *ag, *cagtmp;
114 struct portal_group *pg, *cpgtmp;
115 struct pport *pp, *pptmp;
116 struct isns *is, *istmp;
118 assert(conf->conf_pidfh == NULL);
120 TAILQ_FOREACH_SAFE(lun, &conf->conf_luns, l_next, ltmp)
122 TAILQ_FOREACH_SAFE(targ, &conf->conf_targets, t_next, tmp)
124 TAILQ_FOREACH_SAFE(ag, &conf->conf_auth_groups, ag_next, cagtmp)
125 auth_group_delete(ag);
126 TAILQ_FOREACH_SAFE(pg, &conf->conf_portal_groups, pg_next, cpgtmp)
127 portal_group_delete(pg);
128 TAILQ_FOREACH_SAFE(pp, &conf->conf_pports, pp_next, pptmp)
130 TAILQ_FOREACH_SAFE(is, &conf->conf_isns, i_next, istmp)
132 assert(TAILQ_EMPTY(&conf->conf_ports));
133 free(conf->conf_pidfile_path);
138 auth_new(struct auth_group *ag)
142 auth = calloc(1, sizeof(*auth));
144 log_err(1, "calloc");
145 auth->a_auth_group = ag;
146 TAILQ_INSERT_TAIL(&ag->ag_auths, auth, a_next);
151 auth_delete(struct auth *auth)
153 TAILQ_REMOVE(&auth->a_auth_group->ag_auths, auth, a_next);
156 free(auth->a_secret);
157 free(auth->a_mutual_user);
158 free(auth->a_mutual_secret);
163 auth_find(const struct auth_group *ag, const char *user)
165 const struct auth *auth;
167 TAILQ_FOREACH(auth, &ag->ag_auths, a_next) {
168 if (strcmp(auth->a_user, user) == 0)
176 auth_check_secret_length(struct auth *auth)
180 len = strlen(auth->a_secret);
182 if (auth->a_auth_group->ag_name != NULL)
183 log_warnx("secret for user \"%s\", auth-group \"%s\", "
184 "is too long; it should be at most 16 characters "
185 "long", auth->a_user, auth->a_auth_group->ag_name);
187 log_warnx("secret for user \"%s\", target \"%s\", "
188 "is too long; it should be at most 16 characters "
189 "long", auth->a_user,
190 auth->a_auth_group->ag_target->t_name);
193 if (auth->a_auth_group->ag_name != NULL)
194 log_warnx("secret for user \"%s\", auth-group \"%s\", "
195 "is too short; it should be at least 12 characters "
196 "long", auth->a_user,
197 auth->a_auth_group->ag_name);
199 log_warnx("secret for user \"%s\", target \"%s\", "
200 "is too short; it should be at least 16 characters "
201 "long", auth->a_user,
202 auth->a_auth_group->ag_target->t_name);
205 if (auth->a_mutual_secret != NULL) {
206 len = strlen(auth->a_mutual_secret);
208 if (auth->a_auth_group->ag_name != NULL)
209 log_warnx("mutual secret for user \"%s\", "
210 "auth-group \"%s\", is too long; it should "
211 "be at most 16 characters long",
212 auth->a_user, auth->a_auth_group->ag_name);
214 log_warnx("mutual secret for user \"%s\", "
215 "target \"%s\", is too long; it should "
216 "be at most 16 characters long",
218 auth->a_auth_group->ag_target->t_name);
221 if (auth->a_auth_group->ag_name != NULL)
222 log_warnx("mutual secret for user \"%s\", "
223 "auth-group \"%s\", is too short; it "
224 "should be at least 12 characters long",
225 auth->a_user, auth->a_auth_group->ag_name);
227 log_warnx("mutual secret for user \"%s\", "
228 "target \"%s\", is too short; it should be "
229 "at least 16 characters long",
231 auth->a_auth_group->ag_target->t_name);
237 auth_new_chap(struct auth_group *ag, const char *user,
242 if (ag->ag_type == AG_TYPE_UNKNOWN)
243 ag->ag_type = AG_TYPE_CHAP;
244 if (ag->ag_type != AG_TYPE_CHAP) {
245 if (ag->ag_name != NULL)
246 log_warnx("cannot mix \"chap\" authentication with "
247 "other types for auth-group \"%s\"", ag->ag_name);
249 log_warnx("cannot mix \"chap\" authentication with "
250 "other types for target \"%s\"",
251 ag->ag_target->t_name);
256 auth->a_user = checked_strdup(user);
257 auth->a_secret = checked_strdup(secret);
259 auth_check_secret_length(auth);
265 auth_new_chap_mutual(struct auth_group *ag, const char *user,
266 const char *secret, const char *user2, const char *secret2)
270 if (ag->ag_type == AG_TYPE_UNKNOWN)
271 ag->ag_type = AG_TYPE_CHAP_MUTUAL;
272 if (ag->ag_type != AG_TYPE_CHAP_MUTUAL) {
273 if (ag->ag_name != NULL)
274 log_warnx("cannot mix \"chap-mutual\" authentication "
275 "with other types for auth-group \"%s\"",
278 log_warnx("cannot mix \"chap-mutual\" authentication "
279 "with other types for target \"%s\"",
280 ag->ag_target->t_name);
285 auth->a_user = checked_strdup(user);
286 auth->a_secret = checked_strdup(secret);
287 auth->a_mutual_user = checked_strdup(user2);
288 auth->a_mutual_secret = checked_strdup(secret2);
290 auth_check_secret_length(auth);
295 const struct auth_name *
296 auth_name_new(struct auth_group *ag, const char *name)
298 struct auth_name *an;
300 an = calloc(1, sizeof(*an));
302 log_err(1, "calloc");
303 an->an_auth_group = ag;
304 an->an_initator_name = checked_strdup(name);
305 TAILQ_INSERT_TAIL(&ag->ag_names, an, an_next);
310 auth_name_delete(struct auth_name *an)
312 TAILQ_REMOVE(&an->an_auth_group->ag_names, an, an_next);
314 free(an->an_initator_name);
319 auth_name_defined(const struct auth_group *ag)
321 if (TAILQ_EMPTY(&ag->ag_names))
326 const struct auth_name *
327 auth_name_find(const struct auth_group *ag, const char *name)
329 const struct auth_name *auth_name;
331 TAILQ_FOREACH(auth_name, &ag->ag_names, an_next) {
332 if (strcmp(auth_name->an_initator_name, name) == 0)
340 auth_name_check(const struct auth_group *ag, const char *initiator_name)
342 if (!auth_name_defined(ag))
345 if (auth_name_find(ag, initiator_name) == NULL)
351 const struct auth_portal *
352 auth_portal_new(struct auth_group *ag, const char *portal)
354 struct auth_portal *ap;
355 char *net, *mask, *str, *tmp;
358 ap = calloc(1, sizeof(*ap));
360 log_err(1, "calloc");
361 ap->ap_auth_group = ag;
362 ap->ap_initator_portal = checked_strdup(portal);
363 mask = str = checked_strdup(portal);
364 net = strsep(&mask, "/");
370 if (net[len - 1] == ']')
372 if (strchr(net, ':') != NULL) {
373 struct sockaddr_in6 *sin6 =
374 (struct sockaddr_in6 *)&ap->ap_sa;
376 sin6->sin6_len = sizeof(*sin6);
377 sin6->sin6_family = AF_INET6;
378 if (inet_pton(AF_INET6, net, &sin6->sin6_addr) <= 0)
382 struct sockaddr_in *sin =
383 (struct sockaddr_in *)&ap->ap_sa;
385 sin->sin_len = sizeof(*sin);
386 sin->sin_family = AF_INET;
387 if (inet_pton(AF_INET, net, &sin->sin_addr) <= 0)
392 m = strtol(mask, &tmp, 0);
393 if (m < 0 || m > dm || tmp[0] != 0)
399 TAILQ_INSERT_TAIL(&ag->ag_portals, ap, ap_next);
404 log_errx(1, "Incorrect initiator portal '%s'", portal);
409 auth_portal_delete(struct auth_portal *ap)
411 TAILQ_REMOVE(&ap->ap_auth_group->ag_portals, ap, ap_next);
413 free(ap->ap_initator_portal);
418 auth_portal_defined(const struct auth_group *ag)
420 if (TAILQ_EMPTY(&ag->ag_portals))
425 const struct auth_portal *
426 auth_portal_find(const struct auth_group *ag, const struct sockaddr_storage *ss)
428 const struct auth_portal *ap;
429 const uint8_t *a, *b;
433 TAILQ_FOREACH(ap, &ag->ag_portals, ap_next) {
434 if (ap->ap_sa.ss_family != ss->ss_family)
436 if (ss->ss_family == AF_INET) {
437 a = (const uint8_t *)
438 &((const struct sockaddr_in *)ss)->sin_addr;
439 b = (const uint8_t *)
440 &((const struct sockaddr_in *)&ap->ap_sa)->sin_addr;
442 a = (const uint8_t *)
443 &((const struct sockaddr_in6 *)ss)->sin6_addr;
444 b = (const uint8_t *)
445 &((const struct sockaddr_in6 *)&ap->ap_sa)->sin6_addr;
447 for (i = 0; i < ap->ap_mask / 8; i++) {
451 if (ap->ap_mask % 8) {
452 bmask = 0xff << (8 - (ap->ap_mask % 8));
453 if ((a[i] & bmask) != (b[i] & bmask))
465 auth_portal_check(const struct auth_group *ag, const struct sockaddr_storage *sa)
468 if (!auth_portal_defined(ag))
471 if (auth_portal_find(ag, sa) == NULL)
478 auth_group_new(struct conf *conf, const char *name)
480 struct auth_group *ag;
483 ag = auth_group_find(conf, name);
485 log_warnx("duplicated auth-group \"%s\"", name);
490 ag = calloc(1, sizeof(*ag));
492 log_err(1, "calloc");
494 ag->ag_name = checked_strdup(name);
495 TAILQ_INIT(&ag->ag_auths);
496 TAILQ_INIT(&ag->ag_names);
497 TAILQ_INIT(&ag->ag_portals);
499 TAILQ_INSERT_TAIL(&conf->conf_auth_groups, ag, ag_next);
505 auth_group_delete(struct auth_group *ag)
507 struct auth *auth, *auth_tmp;
508 struct auth_name *auth_name, *auth_name_tmp;
509 struct auth_portal *auth_portal, *auth_portal_tmp;
511 TAILQ_REMOVE(&ag->ag_conf->conf_auth_groups, ag, ag_next);
513 TAILQ_FOREACH_SAFE(auth, &ag->ag_auths, a_next, auth_tmp)
515 TAILQ_FOREACH_SAFE(auth_name, &ag->ag_names, an_next, auth_name_tmp)
516 auth_name_delete(auth_name);
517 TAILQ_FOREACH_SAFE(auth_portal, &ag->ag_portals, ap_next,
519 auth_portal_delete(auth_portal);
525 auth_group_find(const struct conf *conf, const char *name)
527 struct auth_group *ag;
529 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
530 if (ag->ag_name != NULL && strcmp(ag->ag_name, name) == 0)
538 auth_group_set_type(struct auth_group *ag, const char *str)
542 if (strcmp(str, "none") == 0) {
543 type = AG_TYPE_NO_AUTHENTICATION;
544 } else if (strcmp(str, "deny") == 0) {
546 } else if (strcmp(str, "chap") == 0) {
548 } else if (strcmp(str, "chap-mutual") == 0) {
549 type = AG_TYPE_CHAP_MUTUAL;
551 if (ag->ag_name != NULL)
552 log_warnx("invalid auth-type \"%s\" for auth-group "
553 "\"%s\"", str, ag->ag_name);
555 log_warnx("invalid auth-type \"%s\" for target "
556 "\"%s\"", str, ag->ag_target->t_name);
560 if (ag->ag_type != AG_TYPE_UNKNOWN && ag->ag_type != type) {
561 if (ag->ag_name != NULL) {
562 log_warnx("cannot set auth-type to \"%s\" for "
563 "auth-group \"%s\"; already has a different "
564 "type", str, ag->ag_name);
566 log_warnx("cannot set auth-type to \"%s\" for target "
567 "\"%s\"; already has a different type",
568 str, ag->ag_target->t_name);
578 static struct portal *
579 portal_new(struct portal_group *pg)
581 struct portal *portal;
583 portal = calloc(1, sizeof(*portal));
585 log_err(1, "calloc");
586 TAILQ_INIT(&portal->p_targets);
587 portal->p_portal_group = pg;
588 TAILQ_INSERT_TAIL(&pg->pg_portals, portal, p_next);
593 portal_delete(struct portal *portal)
596 TAILQ_REMOVE(&portal->p_portal_group->pg_portals, portal, p_next);
597 if (portal->p_ai != NULL)
598 freeaddrinfo(portal->p_ai);
599 free(portal->p_listen);
603 struct portal_group *
604 portal_group_new(struct conf *conf, const char *name)
606 struct portal_group *pg;
608 pg = portal_group_find(conf, name);
610 log_warnx("duplicated portal-group \"%s\"", name);
614 pg = calloc(1, sizeof(*pg));
616 log_err(1, "calloc");
617 pg->pg_name = checked_strdup(name);
618 TAILQ_INIT(&pg->pg_portals);
619 TAILQ_INIT(&pg->pg_ports);
621 pg->pg_tag = 0; /* Assigned later in conf_apply(). */
622 TAILQ_INSERT_TAIL(&conf->conf_portal_groups, pg, pg_next);
628 portal_group_delete(struct portal_group *pg)
630 struct portal *portal, *tmp;
631 struct port *port, *tport;
633 TAILQ_FOREACH_SAFE(port, &pg->pg_ports, p_pgs, tport)
635 TAILQ_REMOVE(&pg->pg_conf->conf_portal_groups, pg, pg_next);
637 TAILQ_FOREACH_SAFE(portal, &pg->pg_portals, p_next, tmp)
638 portal_delete(portal);
640 free(pg->pg_redirection);
644 struct portal_group *
645 portal_group_find(const struct conf *conf, const char *name)
647 struct portal_group *pg;
649 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
650 if (strcmp(pg->pg_name, name) == 0)
658 parse_addr_port(char *arg, const char *def_port, struct addrinfo **ai)
660 struct addrinfo hints;
661 char *str, *addr, *ch;
663 int error, colons = 0;
665 str = arg = strdup(arg);
668 * IPv6 address in square brackets, perhaps with port.
671 addr = strsep(&arg, "]");
674 if (arg[0] == '\0') {
676 } else if (arg[0] == ':') {
684 * Either IPv6 address without brackets - and without
685 * a port - or IPv4 address. Just count the colons.
687 for (ch = arg; *ch != '\0'; ch++) {
695 addr = strsep(&arg, ":");
703 memset(&hints, 0, sizeof(hints));
704 hints.ai_family = PF_UNSPEC;
705 hints.ai_socktype = SOCK_STREAM;
706 hints.ai_flags = AI_PASSIVE;
707 error = getaddrinfo(addr, port, &hints, ai);
709 return ((error != 0) ? 1 : 0);
713 portal_group_add_listen(struct portal_group *pg, const char *value, bool iser)
715 struct portal *portal;
717 portal = portal_new(pg);
718 portal->p_listen = checked_strdup(value);
719 portal->p_iser = iser;
721 if (parse_addr_port(portal->p_listen, "3260", &portal->p_ai)) {
722 log_warnx("invalid listen address %s", portal->p_listen);
723 portal_delete(portal);
728 * XXX: getaddrinfo(3) may return multiple addresses; we should turn
729 * those into multiple portals.
736 isns_new(struct conf *conf, const char *addr)
740 isns = calloc(1, sizeof(*isns));
742 log_err(1, "calloc");
744 TAILQ_INSERT_TAIL(&conf->conf_isns, isns, i_next);
745 isns->i_addr = checked_strdup(addr);
747 if (parse_addr_port(isns->i_addr, "3205", &isns->i_ai)) {
748 log_warnx("invalid iSNS address %s", isns->i_addr);
754 * XXX: getaddrinfo(3) may return multiple addresses; we should turn
755 * those into multiple servers.
762 isns_delete(struct isns *isns)
765 TAILQ_REMOVE(&isns->i_conf->conf_isns, isns, i_next);
767 if (isns->i_ai != NULL)
768 freeaddrinfo(isns->i_ai);
773 isns_do_connect(struct isns *isns)
777 s = socket(isns->i_ai->ai_family, isns->i_ai->ai_socktype,
778 isns->i_ai->ai_protocol);
780 log_warn("socket(2) failed for %s", isns->i_addr);
783 if (connect(s, isns->i_ai->ai_addr, isns->i_ai->ai_addrlen)) {
784 log_warn("connect(2) failed for %s", isns->i_addr);
792 isns_do_register(struct isns *isns, int s, const char *hostname)
794 struct conf *conf = isns->i_conf;
795 struct target *target;
796 struct portal *portal;
797 struct portal_group *pg;
799 struct isns_req *req;
803 req = isns_req_create(ISNS_FUNC_DEVATTRREG, ISNS_FLAG_CLIENT);
804 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
805 isns_req_add_delim(req);
806 isns_req_add_str(req, 1, hostname);
807 isns_req_add_32(req, 2, 2); /* 2 -- iSCSI */
808 isns_req_add_32(req, 6, conf->conf_isns_period);
809 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
810 if (pg->pg_unassigned)
812 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
813 isns_req_add_addr(req, 16, portal->p_ai);
814 isns_req_add_port(req, 17, portal->p_ai);
817 TAILQ_FOREACH(target, &conf->conf_targets, t_next) {
818 isns_req_add_str(req, 32, target->t_name);
819 isns_req_add_32(req, 33, 1); /* 1 -- Target*/
820 if (target->t_alias != NULL)
821 isns_req_add_str(req, 34, target->t_alias);
822 TAILQ_FOREACH(port, &target->t_ports, p_ts) {
823 if ((pg = port->p_portal_group) == NULL)
825 isns_req_add_32(req, 51, pg->pg_tag);
826 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
827 isns_req_add_addr(req, 49, portal->p_ai);
828 isns_req_add_port(req, 50, portal->p_ai);
832 res = isns_req_send(s, req);
834 log_warn("send(2) failed for %s", isns->i_addr);
837 res = isns_req_receive(s, req);
839 log_warn("receive(2) failed for %s", isns->i_addr);
842 error = isns_req_get_status(req);
844 log_warnx("iSNS register error %d for %s", error, isns->i_addr);
853 isns_do_check(struct isns *isns, int s, const char *hostname)
855 struct conf *conf = isns->i_conf;
856 struct isns_req *req;
860 req = isns_req_create(ISNS_FUNC_DEVATTRQRY, ISNS_FLAG_CLIENT);
861 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
862 isns_req_add_str(req, 1, hostname);
863 isns_req_add_delim(req);
864 isns_req_add(req, 2, 0, NULL);
865 res = isns_req_send(s, req);
867 log_warn("send(2) failed for %s", isns->i_addr);
870 res = isns_req_receive(s, req);
872 log_warn("receive(2) failed for %s", isns->i_addr);
875 error = isns_req_get_status(req);
877 log_warnx("iSNS check error %d for %s", error, isns->i_addr);
886 isns_do_deregister(struct isns *isns, int s, const char *hostname)
888 struct conf *conf = isns->i_conf;
889 struct isns_req *req;
893 req = isns_req_create(ISNS_FUNC_DEVDEREG, ISNS_FLAG_CLIENT);
894 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
895 isns_req_add_delim(req);
896 isns_req_add_str(req, 1, hostname);
897 res = isns_req_send(s, req);
899 log_warn("send(2) failed for %s", isns->i_addr);
902 res = isns_req_receive(s, req);
904 log_warn("receive(2) failed for %s", isns->i_addr);
907 error = isns_req_get_status(req);
909 log_warnx("iSNS deregister error %d for %s", error, isns->i_addr);
918 isns_register(struct isns *isns, struct isns *oldisns)
920 struct conf *conf = isns->i_conf;
924 if (TAILQ_EMPTY(&conf->conf_targets) ||
925 TAILQ_EMPTY(&conf->conf_portal_groups))
927 set_timeout(conf->conf_isns_timeout, false);
928 s = isns_do_connect(isns);
930 set_timeout(0, false);
933 gethostname(hostname, sizeof(hostname));
935 if (oldisns == NULL || TAILQ_EMPTY(&oldisns->i_conf->conf_targets))
937 isns_do_deregister(oldisns, s, hostname);
938 isns_do_register(isns, s, hostname);
940 set_timeout(0, false);
944 isns_check(struct isns *isns)
946 struct conf *conf = isns->i_conf;
950 if (TAILQ_EMPTY(&conf->conf_targets) ||
951 TAILQ_EMPTY(&conf->conf_portal_groups))
953 set_timeout(conf->conf_isns_timeout, false);
954 s = isns_do_connect(isns);
956 set_timeout(0, false);
959 gethostname(hostname, sizeof(hostname));
961 res = isns_do_check(isns, s, hostname);
963 isns_do_deregister(isns, s, hostname);
964 isns_do_register(isns, s, hostname);
967 set_timeout(0, false);
971 isns_deregister(struct isns *isns)
973 struct conf *conf = isns->i_conf;
977 if (TAILQ_EMPTY(&conf->conf_targets) ||
978 TAILQ_EMPTY(&conf->conf_portal_groups))
980 set_timeout(conf->conf_isns_timeout, false);
981 s = isns_do_connect(isns);
984 gethostname(hostname, sizeof(hostname));
986 isns_do_deregister(isns, s, hostname);
988 set_timeout(0, false);
992 portal_group_set_filter(struct portal_group *pg, const char *str)
996 if (strcmp(str, "none") == 0) {
997 filter = PG_FILTER_NONE;
998 } else if (strcmp(str, "portal") == 0) {
999 filter = PG_FILTER_PORTAL;
1000 } else if (strcmp(str, "portal-name") == 0) {
1001 filter = PG_FILTER_PORTAL_NAME;
1002 } else if (strcmp(str, "portal-name-auth") == 0) {
1003 filter = PG_FILTER_PORTAL_NAME_AUTH;
1005 log_warnx("invalid discovery-filter \"%s\" for portal-group "
1006 "\"%s\"; valid values are \"none\", \"portal\", "
1007 "\"portal-name\", and \"portal-name-auth\"",
1012 if (pg->pg_discovery_filter != PG_FILTER_UNKNOWN &&
1013 pg->pg_discovery_filter != filter) {
1014 log_warnx("cannot set discovery-filter to \"%s\" for "
1015 "portal-group \"%s\"; already has a different "
1016 "value", str, pg->pg_name);
1020 pg->pg_discovery_filter = filter;
1026 portal_group_set_redirection(struct portal_group *pg, const char *addr)
1029 if (pg->pg_redirection != NULL) {
1030 log_warnx("cannot set redirection to \"%s\" for "
1031 "portal-group \"%s\"; already defined",
1036 pg->pg_redirection = checked_strdup(addr);
1042 valid_hex(const char ch)
1074 valid_iscsi_name(const char *name)
1078 if (strlen(name) >= MAX_NAME_LEN) {
1079 log_warnx("overlong name for target \"%s\"; max length allowed "
1080 "by iSCSI specification is %d characters",
1081 name, MAX_NAME_LEN);
1086 * In the cases below, we don't return an error, just in case the admin
1087 * was right, and we're wrong.
1089 if (strncasecmp(name, "iqn.", strlen("iqn.")) == 0) {
1090 for (i = strlen("iqn."); name[i] != '\0'; i++) {
1092 * XXX: We should verify UTF-8 normalisation, as defined
1093 * by 3.2.6.2: iSCSI Name Encoding.
1095 if (isalnum(name[i]))
1097 if (name[i] == '-' || name[i] == '.' || name[i] == ':')
1099 log_warnx("invalid character \"%c\" in target name "
1100 "\"%s\"; allowed characters are letters, digits, "
1101 "'-', '.', and ':'", name[i], name);
1105 * XXX: Check more stuff: valid date and a valid reversed domain.
1107 } else if (strncasecmp(name, "eui.", strlen("eui.")) == 0) {
1108 if (strlen(name) != strlen("eui.") + 16)
1109 log_warnx("invalid target name \"%s\"; the \"eui.\" "
1110 "should be followed by exactly 16 hexadecimal "
1112 for (i = strlen("eui."); name[i] != '\0'; i++) {
1113 if (!valid_hex(name[i])) {
1114 log_warnx("invalid character \"%c\" in target "
1115 "name \"%s\"; allowed characters are 1-9 "
1116 "and A-F", name[i], name);
1120 } else if (strncasecmp(name, "naa.", strlen("naa.")) == 0) {
1121 if (strlen(name) > strlen("naa.") + 32)
1122 log_warnx("invalid target name \"%s\"; the \"naa.\" "
1123 "should be followed by at most 32 hexadecimal "
1125 for (i = strlen("naa."); name[i] != '\0'; i++) {
1126 if (!valid_hex(name[i])) {
1127 log_warnx("invalid character \"%c\" in target "
1128 "name \"%s\"; allowed characters are 1-9 "
1129 "and A-F", name[i], name);
1134 log_warnx("invalid target name \"%s\"; should start with "
1135 "either \".iqn\", \"eui.\", or \"naa.\"",
1142 pport_new(struct conf *conf, const char *name, uint32_t ctl_port)
1146 pp = calloc(1, sizeof(*pp));
1148 log_err(1, "calloc");
1150 pp->pp_name = checked_strdup(name);
1151 pp->pp_ctl_port = ctl_port;
1152 TAILQ_INIT(&pp->pp_ports);
1153 TAILQ_INSERT_TAIL(&conf->conf_pports, pp, pp_next);
1158 pport_find(const struct conf *conf, const char *name)
1162 TAILQ_FOREACH(pp, &conf->conf_pports, pp_next) {
1163 if (strcasecmp(pp->pp_name, name) == 0)
1170 pport_copy(struct pport *pp, struct conf *conf)
1172 struct pport *ppnew;
1174 ppnew = pport_new(conf, pp->pp_name, pp->pp_ctl_port);
1179 pport_delete(struct pport *pp)
1181 struct port *port, *tport;
1183 TAILQ_FOREACH_SAFE(port, &pp->pp_ports, p_ts, tport)
1185 TAILQ_REMOVE(&pp->pp_conf->conf_pports, pp, pp_next);
1191 port_new(struct conf *conf, struct target *target, struct portal_group *pg)
1197 ret = asprintf(&name, "%s-%s", pg->pg_name, target->t_name);
1199 log_err(1, "asprintf");
1200 if (port_find(conf, name) != NULL) {
1201 log_warnx("duplicate port \"%s\"", name);
1205 port = calloc(1, sizeof(*port));
1207 log_err(1, "calloc");
1208 port->p_conf = conf;
1209 port->p_name = name;
1210 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next);
1211 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts);
1212 port->p_target = target;
1213 TAILQ_INSERT_TAIL(&pg->pg_ports, port, p_pgs);
1214 port->p_portal_group = pg;
1219 port_new_pp(struct conf *conf, struct target *target, struct pport *pp)
1225 ret = asprintf(&name, "%s-%s", pp->pp_name, target->t_name);
1227 log_err(1, "asprintf");
1228 if (port_find(conf, name) != NULL) {
1229 log_warnx("duplicate port \"%s\"", name);
1233 port = calloc(1, sizeof(*port));
1235 log_err(1, "calloc");
1236 port->p_conf = conf;
1237 port->p_name = name;
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(&pp->pp_ports, port, p_pps);
1247 port_find(const struct conf *conf, const char *name)
1251 TAILQ_FOREACH(port, &conf->conf_ports, p_next) {
1252 if (strcasecmp(port->p_name, name) == 0)
1260 port_find_in_pg(const struct portal_group *pg, const char *target)
1264 TAILQ_FOREACH(port, &pg->pg_ports, p_pgs) {
1265 if (strcasecmp(port->p_target->t_name, target) == 0)
1273 port_delete(struct port *port)
1276 if (port->p_portal_group)
1277 TAILQ_REMOVE(&port->p_portal_group->pg_ports, port, p_pgs);
1279 TAILQ_REMOVE(&port->p_pport->pp_ports, port, p_pps);
1281 TAILQ_REMOVE(&port->p_target->t_ports, port, p_ts);
1282 TAILQ_REMOVE(&port->p_conf->conf_ports, port, p_next);
1288 target_new(struct conf *conf, const char *name)
1290 struct target *targ;
1293 targ = target_find(conf, name);
1295 log_warnx("duplicated target \"%s\"", name);
1298 if (valid_iscsi_name(name) == false) {
1299 log_warnx("target name \"%s\" is invalid", name);
1302 targ = calloc(1, sizeof(*targ));
1304 log_err(1, "calloc");
1305 targ->t_name = checked_strdup(name);
1308 * RFC 3722 requires us to normalize the name to lowercase.
1311 for (i = 0; i < len; i++)
1312 targ->t_name[i] = tolower(targ->t_name[i]);
1314 targ->t_conf = conf;
1315 TAILQ_INIT(&targ->t_ports);
1316 TAILQ_INSERT_TAIL(&conf->conf_targets, targ, t_next);
1322 target_delete(struct target *targ)
1324 struct port *port, *tport;
1326 TAILQ_FOREACH_SAFE(port, &targ->t_ports, p_ts, tport)
1328 TAILQ_REMOVE(&targ->t_conf->conf_targets, targ, t_next);
1331 free(targ->t_redirection);
1336 target_find(struct conf *conf, const char *name)
1338 struct target *targ;
1340 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1341 if (strcasecmp(targ->t_name, name) == 0)
1349 target_set_redirection(struct target *target, const char *addr)
1352 if (target->t_redirection != NULL) {
1353 log_warnx("cannot set redirection to \"%s\" for "
1354 "target \"%s\"; already defined",
1355 addr, target->t_name);
1359 target->t_redirection = checked_strdup(addr);
1365 lun_new(struct conf *conf, const char *name)
1369 lun = lun_find(conf, name);
1371 log_warnx("duplicated lun \"%s\"", name);
1375 lun = calloc(1, sizeof(*lun));
1377 log_err(1, "calloc");
1379 lun->l_name = checked_strdup(name);
1380 TAILQ_INIT(&lun->l_options);
1381 TAILQ_INSERT_TAIL(&conf->conf_luns, lun, l_next);
1387 lun_delete(struct lun *lun)
1389 struct target *targ;
1390 struct lun_option *lo, *tmp;
1393 TAILQ_FOREACH(targ, &lun->l_conf->conf_targets, t_next) {
1394 for (i = 0; i < MAX_LUNS; i++) {
1395 if (targ->t_luns[i] == lun)
1396 targ->t_luns[i] = NULL;
1399 TAILQ_REMOVE(&lun->l_conf->conf_luns, lun, l_next);
1401 TAILQ_FOREACH_SAFE(lo, &lun->l_options, lo_next, tmp)
1402 lun_option_delete(lo);
1404 free(lun->l_backend);
1405 free(lun->l_device_id);
1407 free(lun->l_scsiname);
1408 free(lun->l_serial);
1413 lun_find(const struct conf *conf, const char *name)
1417 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1418 if (strcmp(lun->l_name, name) == 0)
1426 lun_set_backend(struct lun *lun, const char *value)
1428 free(lun->l_backend);
1429 lun->l_backend = checked_strdup(value);
1433 lun_set_blocksize(struct lun *lun, size_t value)
1436 lun->l_blocksize = value;
1440 lun_set_device_id(struct lun *lun, const char *value)
1442 free(lun->l_device_id);
1443 lun->l_device_id = checked_strdup(value);
1447 lun_set_path(struct lun *lun, const char *value)
1450 lun->l_path = checked_strdup(value);
1454 lun_set_scsiname(struct lun *lun, const char *value)
1456 free(lun->l_scsiname);
1457 lun->l_scsiname = checked_strdup(value);
1461 lun_set_serial(struct lun *lun, const char *value)
1463 free(lun->l_serial);
1464 lun->l_serial = checked_strdup(value);
1468 lun_set_size(struct lun *lun, size_t value)
1471 lun->l_size = value;
1475 lun_set_ctl_lun(struct lun *lun, uint32_t value)
1478 lun->l_ctl_lun = value;
1482 lun_option_new(struct lun *lun, const char *name, const char *value)
1484 struct lun_option *lo;
1486 lo = lun_option_find(lun, name);
1488 log_warnx("duplicated lun option \"%s\" for lun \"%s\"",
1493 lo = calloc(1, sizeof(*lo));
1495 log_err(1, "calloc");
1496 lo->lo_name = checked_strdup(name);
1497 lo->lo_value = checked_strdup(value);
1499 TAILQ_INSERT_TAIL(&lun->l_options, lo, lo_next);
1505 lun_option_delete(struct lun_option *lo)
1508 TAILQ_REMOVE(&lo->lo_lun->l_options, lo, lo_next);
1516 lun_option_find(const struct lun *lun, const char *name)
1518 struct lun_option *lo;
1520 TAILQ_FOREACH(lo, &lun->l_options, lo_next) {
1521 if (strcmp(lo->lo_name, name) == 0)
1529 lun_option_set(struct lun_option *lo, const char *value)
1533 lo->lo_value = checked_strdup(value);
1536 static struct connection *
1537 connection_new(struct portal *portal, int fd, const char *host,
1538 const struct sockaddr *client_sa)
1540 struct connection *conn;
1542 conn = calloc(1, sizeof(*conn));
1544 log_err(1, "calloc");
1545 conn->conn_portal = portal;
1546 conn->conn_socket = fd;
1547 conn->conn_initiator_addr = checked_strdup(host);
1548 memcpy(&conn->conn_initiator_sa, client_sa, client_sa->sa_len);
1551 * Default values, from RFC 3720, section 12.
1553 conn->conn_max_data_segment_length = 8192;
1554 conn->conn_max_burst_length = 262144;
1555 conn->conn_immediate_data = true;
1562 conf_print(struct conf *conf)
1564 struct auth_group *ag;
1566 struct auth_name *auth_name;
1567 struct auth_portal *auth_portal;
1568 struct portal_group *pg;
1569 struct portal *portal;
1570 struct target *targ;
1572 struct lun_option *lo;
1574 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
1575 fprintf(stderr, "auth-group %s {\n", ag->ag_name);
1576 TAILQ_FOREACH(auth, &ag->ag_auths, a_next)
1577 fprintf(stderr, "\t chap-mutual %s %s %s %s\n",
1578 auth->a_user, auth->a_secret,
1579 auth->a_mutual_user, auth->a_mutual_secret);
1580 TAILQ_FOREACH(auth_name, &ag->ag_names, an_next)
1581 fprintf(stderr, "\t initiator-name %s\n",
1582 auth_name->an_initator_name);
1583 TAILQ_FOREACH(auth_portal, &ag->ag_portals, an_next)
1584 fprintf(stderr, "\t initiator-portal %s\n",
1585 auth_portal->an_initator_portal);
1586 fprintf(stderr, "}\n");
1588 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1589 fprintf(stderr, "portal-group %s {\n", pg->pg_name);
1590 TAILQ_FOREACH(portal, &pg->pg_portals, p_next)
1591 fprintf(stderr, "\t listen %s\n", portal->p_listen);
1592 fprintf(stderr, "}\n");
1594 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1595 fprintf(stderr, "\tlun %s {\n", lun->l_name);
1596 fprintf(stderr, "\t\tpath %s\n", lun->l_path);
1597 TAILQ_FOREACH(lo, &lun->l_options, lo_next)
1598 fprintf(stderr, "\t\toption %s %s\n",
1599 lo->lo_name, lo->lo_value);
1600 fprintf(stderr, "\t}\n");
1602 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1603 fprintf(stderr, "target %s {\n", targ->t_name);
1604 if (targ->t_alias != NULL)
1605 fprintf(stderr, "\t alias %s\n", targ->t_alias);
1606 fprintf(stderr, "}\n");
1612 conf_verify_lun(struct lun *lun)
1614 const struct lun *lun2;
1616 if (lun->l_backend == NULL)
1617 lun_set_backend(lun, "block");
1618 if (strcmp(lun->l_backend, "block") == 0) {
1619 if (lun->l_path == NULL) {
1620 log_warnx("missing path for lun \"%s\"",
1624 } else if (strcmp(lun->l_backend, "ramdisk") == 0) {
1625 if (lun->l_size == 0) {
1626 log_warnx("missing size for ramdisk-backed lun \"%s\"",
1630 if (lun->l_path != NULL) {
1631 log_warnx("path must not be specified "
1632 "for ramdisk-backed lun \"%s\"",
1637 if (lun->l_blocksize == 0) {
1638 lun_set_blocksize(lun, DEFAULT_BLOCKSIZE);
1639 } else if (lun->l_blocksize < 0) {
1640 log_warnx("invalid blocksize for lun \"%s\"; "
1641 "must be larger than 0", lun->l_name);
1644 if (lun->l_size != 0 && lun->l_size % lun->l_blocksize != 0) {
1645 log_warnx("invalid size for lun \"%s\"; "
1646 "must be multiple of blocksize", lun->l_name);
1649 TAILQ_FOREACH(lun2, &lun->l_conf->conf_luns, l_next) {
1652 if (lun->l_path != NULL && lun2->l_path != NULL &&
1653 strcmp(lun->l_path, lun2->l_path) == 0) {
1654 log_debugx("WARNING: path \"%s\" duplicated "
1655 "between lun \"%s\", and "
1656 "lun \"%s\"", lun->l_path,
1657 lun->l_name, lun2->l_name);
1665 conf_verify(struct conf *conf)
1667 struct auth_group *ag;
1668 struct portal_group *pg;
1670 struct target *targ;
1675 if (conf->conf_pidfile_path == NULL)
1676 conf->conf_pidfile_path = checked_strdup(DEFAULT_PIDFILE);
1678 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1679 error = conf_verify_lun(lun);
1683 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1684 if (targ->t_auth_group == NULL) {
1685 targ->t_auth_group = auth_group_find(conf,
1687 assert(targ->t_auth_group != NULL);
1689 if (TAILQ_EMPTY(&targ->t_ports)) {
1690 pg = portal_group_find(conf, "default");
1692 port_new(conf, targ, pg);
1695 for (i = 0; i < MAX_LUNS; i++) {
1696 if (targ->t_luns[i] != NULL)
1699 if (!found && targ->t_redirection == NULL) {
1700 log_warnx("no LUNs defined for target \"%s\"",
1703 if (found && targ->t_redirection != NULL) {
1704 log_debugx("target \"%s\" contains luns, "
1705 " but configured for redirection",
1709 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1710 assert(pg->pg_name != NULL);
1711 if (pg->pg_discovery_auth_group == NULL) {
1712 pg->pg_discovery_auth_group =
1713 auth_group_find(conf, "default");
1714 assert(pg->pg_discovery_auth_group != NULL);
1717 if (pg->pg_discovery_filter == PG_FILTER_UNKNOWN)
1718 pg->pg_discovery_filter = PG_FILTER_NONE;
1720 if (!TAILQ_EMPTY(&pg->pg_ports)) {
1721 if (pg->pg_redirection != NULL) {
1722 log_debugx("portal-group \"%s\" assigned "
1723 "to target, but configured "
1727 pg->pg_unassigned = false;
1729 if (strcmp(pg->pg_name, "default") != 0)
1730 log_warnx("portal-group \"%s\" not assigned "
1731 "to any target", pg->pg_name);
1732 pg->pg_unassigned = true;
1735 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
1736 if (ag->ag_name == NULL)
1737 assert(ag->ag_target != NULL);
1739 assert(ag->ag_target == NULL);
1742 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1743 if (targ->t_auth_group == ag) {
1748 TAILQ_FOREACH(port, &conf->conf_ports, p_next) {
1749 if (port->p_auth_group == ag) {
1754 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1755 if (pg->pg_discovery_auth_group == ag) {
1760 if (!found && ag->ag_name != NULL &&
1761 strcmp(ag->ag_name, "default") != 0 &&
1762 strcmp(ag->ag_name, "no-authentication") != 0 &&
1763 strcmp(ag->ag_name, "no-access") != 0) {
1764 log_warnx("auth-group \"%s\" not assigned "
1765 "to any target", ag->ag_name);
1773 conf_apply(struct conf *oldconf, struct conf *newconf)
1775 struct lun *oldlun, *newlun, *tmplun;
1776 struct portal_group *oldpg, *newpg;
1777 struct portal *oldp, *newp;
1778 struct port *oldport, *newport, *tmpport;
1779 struct isns *oldns, *newns;
1781 int changed, cumulated_error = 0, error, sockbuf;
1784 if (oldconf->conf_debug != newconf->conf_debug) {
1785 log_debugx("changing debug level to %d", newconf->conf_debug);
1786 log_init(newconf->conf_debug);
1789 if (oldconf->conf_pidfh != NULL) {
1790 assert(oldconf->conf_pidfile_path != NULL);
1791 if (newconf->conf_pidfile_path != NULL &&
1792 strcmp(oldconf->conf_pidfile_path,
1793 newconf->conf_pidfile_path) == 0) {
1794 newconf->conf_pidfh = oldconf->conf_pidfh;
1795 oldconf->conf_pidfh = NULL;
1797 log_debugx("removing pidfile %s",
1798 oldconf->conf_pidfile_path);
1799 pidfile_remove(oldconf->conf_pidfh);
1800 oldconf->conf_pidfh = NULL;
1804 if (newconf->conf_pidfh == NULL && newconf->conf_pidfile_path != NULL) {
1805 log_debugx("opening pidfile %s", newconf->conf_pidfile_path);
1806 newconf->conf_pidfh =
1807 pidfile_open(newconf->conf_pidfile_path, 0600, &otherpid);
1808 if (newconf->conf_pidfh == NULL) {
1809 if (errno == EEXIST)
1810 log_errx(1, "daemon already running, pid: %jd.",
1811 (intmax_t)otherpid);
1812 log_err(1, "cannot open or create pidfile \"%s\"",
1813 newconf->conf_pidfile_path);
1818 * Go through the new portal groups, assigning tags or preserving old.
1820 TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
1821 oldpg = portal_group_find(oldconf, newpg->pg_name);
1823 newpg->pg_tag = oldpg->pg_tag;
1825 newpg->pg_tag = ++last_portal_group_tag;
1828 /* Deregister on removed iSNS servers. */
1829 TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) {
1830 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) {
1831 if (strcmp(oldns->i_addr, newns->i_addr) == 0)
1835 isns_deregister(oldns);
1839 * XXX: If target or lun removal fails, we should somehow "move"
1840 * the old lun or target into newconf, so that subsequent
1841 * conf_apply() would try to remove them again. That would
1842 * be somewhat hairy, though, and lun deletion failures don't
1843 * really happen, so leave it as it is for now.
1846 * First, remove any ports present in the old configuration
1847 * and missing in the new one.
1849 TAILQ_FOREACH_SAFE(oldport, &oldconf->conf_ports, p_next, tmpport) {
1850 newport = port_find(newconf, oldport->p_name);
1851 if (newport != NULL)
1853 log_debugx("removing port \"%s\"", oldport->p_name);
1854 error = kernel_port_remove(oldport);
1856 log_warnx("failed to remove port %s",
1859 * XXX: Uncomment after fixing the root cause.
1861 * cumulated_error++;
1867 * Second, remove any LUNs present in the old configuration
1868 * and missing in the new one.
1870 TAILQ_FOREACH_SAFE(oldlun, &oldconf->conf_luns, l_next, tmplun) {
1871 newlun = lun_find(newconf, oldlun->l_name);
1872 if (newlun == NULL) {
1873 log_debugx("lun \"%s\", CTL lun %d "
1874 "not found in new configuration; "
1875 "removing", oldlun->l_name, oldlun->l_ctl_lun);
1876 error = kernel_lun_remove(oldlun);
1878 log_warnx("failed to remove lun \"%s\", "
1880 oldlun->l_name, oldlun->l_ctl_lun);
1887 * Also remove the LUNs changed by more than size.
1890 assert(oldlun->l_backend != NULL);
1891 assert(newlun->l_backend != NULL);
1892 if (strcmp(newlun->l_backend, oldlun->l_backend) != 0) {
1893 log_debugx("backend for lun \"%s\", "
1894 "CTL lun %d changed; removing",
1895 oldlun->l_name, oldlun->l_ctl_lun);
1898 if (oldlun->l_blocksize != newlun->l_blocksize) {
1899 log_debugx("blocksize for lun \"%s\", "
1900 "CTL lun %d changed; removing",
1901 oldlun->l_name, oldlun->l_ctl_lun);
1904 if (newlun->l_device_id != NULL &&
1905 (oldlun->l_device_id == NULL ||
1906 strcmp(oldlun->l_device_id, newlun->l_device_id) !=
1908 log_debugx("device-id for lun \"%s\", "
1909 "CTL lun %d changed; removing",
1910 oldlun->l_name, oldlun->l_ctl_lun);
1913 if (newlun->l_path != NULL &&
1914 (oldlun->l_path == NULL ||
1915 strcmp(oldlun->l_path, newlun->l_path) != 0)) {
1916 log_debugx("path for lun \"%s\", "
1917 "CTL lun %d, changed; removing",
1918 oldlun->l_name, oldlun->l_ctl_lun);
1921 if (newlun->l_serial != NULL &&
1922 (oldlun->l_serial == NULL ||
1923 strcmp(oldlun->l_serial, newlun->l_serial) != 0)) {
1924 log_debugx("serial for lun \"%s\", "
1925 "CTL lun %d changed; removing",
1926 oldlun->l_name, oldlun->l_ctl_lun);
1930 error = kernel_lun_remove(oldlun);
1932 log_warnx("failed to remove lun \"%s\", "
1934 oldlun->l_name, oldlun->l_ctl_lun);
1941 lun_set_ctl_lun(newlun, oldlun->l_ctl_lun);
1944 TAILQ_FOREACH_SAFE(newlun, &newconf->conf_luns, l_next, tmplun) {
1945 oldlun = lun_find(oldconf, newlun->l_name);
1946 if (oldlun != NULL) {
1947 if (newlun->l_size != oldlun->l_size ||
1948 newlun->l_size == 0) {
1949 log_debugx("resizing lun \"%s\", CTL lun %d",
1950 newlun->l_name, newlun->l_ctl_lun);
1951 error = kernel_lun_resize(newlun);
1953 log_warnx("failed to "
1954 "resize lun \"%s\", CTL lun %d",
1962 log_debugx("adding lun \"%s\"", newlun->l_name);
1963 error = kernel_lun_add(newlun);
1965 log_warnx("failed to add lun \"%s\"", newlun->l_name);
1972 * Now add new ports or modify existing ones.
1974 TAILQ_FOREACH(newport, &newconf->conf_ports, p_next) {
1975 oldport = port_find(oldconf, newport->p_name);
1977 if (oldport == NULL) {
1978 log_debugx("adding port \"%s\"", newport->p_name);
1979 error = kernel_port_add(newport);
1981 log_debugx("updating port \"%s\"", newport->p_name);
1982 newport->p_ctl_port = oldport->p_ctl_port;
1983 error = kernel_port_update(newport);
1986 log_warnx("failed to %s port %s",
1987 (oldport == NULL) ? "add" : "update",
1990 * XXX: Uncomment after fixing the root cause.
1992 * cumulated_error++;
1998 * Go through the new portals, opening the sockets as neccessary.
2000 TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
2001 if (newpg->pg_unassigned) {
2002 log_debugx("not listening on portal-group \"%s\", "
2003 "not assigned to any target",
2007 TAILQ_FOREACH(newp, &newpg->pg_portals, p_next) {
2009 * Try to find already open portal and reuse
2010 * the listening socket. We don't care about
2011 * what portal or portal group that was, what
2012 * matters is the listening address.
2014 TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups,
2016 TAILQ_FOREACH(oldp, &oldpg->pg_portals,
2018 if (strcmp(newp->p_listen,
2019 oldp->p_listen) == 0 &&
2020 oldp->p_socket > 0) {
2028 if (newp->p_socket > 0) {
2030 * We're done with this portal.
2035 #ifdef ICL_KERNEL_PROXY
2037 newpg->pg_conf->conf_portal_id++;
2038 newp->p_id = newpg->pg_conf->conf_portal_id;
2039 log_debugx("listening on %s, portal-group "
2040 "\"%s\", portal id %d, using ICL proxy",
2041 newp->p_listen, newpg->pg_name, newp->p_id);
2042 kernel_listen(newp->p_ai, newp->p_iser,
2047 assert(proxy_mode == false);
2048 assert(newp->p_iser == false);
2050 log_debugx("listening on %s, portal-group \"%s\"",
2051 newp->p_listen, newpg->pg_name);
2052 newp->p_socket = socket(newp->p_ai->ai_family,
2053 newp->p_ai->ai_socktype,
2054 newp->p_ai->ai_protocol);
2055 if (newp->p_socket < 0) {
2056 log_warn("socket(2) failed for %s",
2061 sockbuf = SOCKBUF_SIZE;
2062 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_RCVBUF,
2063 &sockbuf, sizeof(sockbuf)) == -1)
2064 log_warn("setsockopt(SO_RCVBUF) failed "
2065 "for %s", newp->p_listen);
2066 sockbuf = SOCKBUF_SIZE;
2067 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_SNDBUF,
2068 &sockbuf, sizeof(sockbuf)) == -1)
2069 log_warn("setsockopt(SO_SNDBUF) failed "
2070 "for %s", newp->p_listen);
2071 error = setsockopt(newp->p_socket, SOL_SOCKET,
2072 SO_REUSEADDR, &one, sizeof(one));
2074 log_warn("setsockopt(SO_REUSEADDR) failed "
2075 "for %s", newp->p_listen);
2076 close(newp->p_socket);
2081 error = bind(newp->p_socket, newp->p_ai->ai_addr,
2082 newp->p_ai->ai_addrlen);
2084 log_warn("bind(2) failed for %s",
2086 close(newp->p_socket);
2091 error = listen(newp->p_socket, -1);
2093 log_warn("listen(2) failed for %s",
2095 close(newp->p_socket);
2104 * Go through the no longer used sockets, closing them.
2106 TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups, pg_next) {
2107 TAILQ_FOREACH(oldp, &oldpg->pg_portals, p_next) {
2108 if (oldp->p_socket <= 0)
2110 log_debugx("closing socket for %s, portal-group \"%s\"",
2111 oldp->p_listen, oldpg->pg_name);
2112 close(oldp->p_socket);
2117 /* (Re-)Register on remaining/new iSNS servers. */
2118 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) {
2119 TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) {
2120 if (strcmp(oldns->i_addr, newns->i_addr) == 0)
2123 isns_register(newns, oldns);
2126 /* Schedule iSNS update */
2127 if (!TAILQ_EMPTY(&newconf->conf_isns))
2128 set_timeout((newconf->conf_isns_period + 2) / 3, false);
2130 return (cumulated_error);
2137 return (sigalrm_received);
2141 sigalrm_handler_fatal(int dummy __unused)
2144 * It would be easiest to just log an error and exit. We can't
2145 * do this, though, because log_errx() is not signal safe, since
2146 * it calls syslog(3). Instead, set a flag checked by pdu_send()
2147 * and pdu_receive(), to call log_errx() there. Should they fail
2148 * to notice, we'll exit here one second later.
2150 if (sigalrm_received) {
2152 * Oh well. Just give up and quit.
2157 sigalrm_received = true;
2161 sigalrm_handler(int dummy __unused)
2164 sigalrm_received = true;
2168 set_timeout(int timeout, int fatal)
2170 struct sigaction sa;
2171 struct itimerval itv;
2175 log_debugx("session timeout disabled");
2176 bzero(&itv, sizeof(itv));
2177 error = setitimer(ITIMER_REAL, &itv, NULL);
2179 log_err(1, "setitimer");
2180 sigalrm_received = false;
2184 sigalrm_received = false;
2185 bzero(&sa, sizeof(sa));
2187 sa.sa_handler = sigalrm_handler_fatal;
2189 sa.sa_handler = sigalrm_handler;
2190 sigfillset(&sa.sa_mask);
2191 error = sigaction(SIGALRM, &sa, NULL);
2193 log_err(1, "sigaction");
2196 * First SIGALRM will arive after conf_timeout seconds.
2197 * If we do nothing, another one will arrive a second later.
2199 log_debugx("setting session timeout to %d seconds", timeout);
2200 bzero(&itv, sizeof(itv));
2201 itv.it_interval.tv_sec = 1;
2202 itv.it_value.tv_sec = timeout;
2203 error = setitimer(ITIMER_REAL, &itv, NULL);
2205 log_err(1, "setitimer");
2209 wait_for_children(bool block)
2217 * If "block" is true, wait for at least one process.
2219 if (block && num == 0)
2220 pid = wait4(-1, &status, 0, NULL);
2222 pid = wait4(-1, &status, WNOHANG, NULL);
2225 if (WIFSIGNALED(status)) {
2226 log_warnx("child process %d terminated with signal %d",
2227 pid, WTERMSIG(status));
2228 } else if (WEXITSTATUS(status) != 0) {
2229 log_warnx("child process %d terminated with exit status %d",
2230 pid, WEXITSTATUS(status));
2232 log_debugx("child process %d terminated gracefully", pid);
2241 handle_connection(struct portal *portal, int fd,
2242 const struct sockaddr *client_sa, bool dont_fork)
2244 struct connection *conn;
2247 char host[NI_MAXHOST + 1];
2250 conf = portal->p_portal_group->pg_conf;
2253 log_debugx("incoming connection; not forking due to -d flag");
2255 nchildren -= wait_for_children(false);
2256 assert(nchildren >= 0);
2258 while (conf->conf_maxproc > 0 && nchildren >= conf->conf_maxproc) {
2259 log_debugx("maxproc limit of %d child processes hit; "
2260 "waiting for child process to exit", conf->conf_maxproc);
2261 nchildren -= wait_for_children(true);
2262 assert(nchildren >= 0);
2264 log_debugx("incoming connection; forking child process #%d",
2275 pidfile_close(conf->conf_pidfh);
2277 error = getnameinfo(client_sa, client_sa->sa_len,
2278 host, sizeof(host), NULL, 0, NI_NUMERICHOST);
2280 log_errx(1, "getnameinfo: %s", gai_strerror(error));
2282 log_debugx("accepted connection from %s; portal group \"%s\"",
2283 host, portal->p_portal_group->pg_name);
2284 log_set_peer_addr(host);
2285 setproctitle("%s", host);
2287 conn = connection_new(portal, fd, host, client_sa);
2288 set_timeout(conf->conf_timeout, true);
2291 if (conn->conn_session_type == CONN_SESSION_TYPE_NORMAL) {
2292 kernel_handoff(conn);
2293 log_debugx("connection handed off to the kernel");
2295 assert(conn->conn_session_type == CONN_SESSION_TYPE_DISCOVERY);
2298 log_debugx("nothing more to do; exiting");
2303 fd_add(int fd, fd_set *fdset, int nfds)
2307 * Skip sockets which we failed to bind.
2319 main_loop(struct conf *conf, bool dont_fork)
2321 struct portal_group *pg;
2322 struct portal *portal;
2323 struct sockaddr_storage client_sa;
2324 socklen_t client_salen;
2325 #ifdef ICL_KERNEL_PROXY
2330 int error, nfds, client_fd;
2332 pidfile_write(conf->conf_pidfh);
2335 if (sighup_received || sigterm_received || timed_out())
2338 #ifdef ICL_KERNEL_PROXY
2340 client_salen = sizeof(client_sa);
2341 kernel_accept(&connection_id, &portal_id,
2342 (struct sockaddr *)&client_sa, &client_salen);
2343 assert(client_salen >= client_sa.ss_len);
2345 log_debugx("incoming connection, id %d, portal id %d",
2346 connection_id, portal_id);
2347 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2348 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
2349 if (portal->p_id == portal_id) {
2355 log_errx(1, "kernel returned invalid portal_id %d",
2359 handle_connection(portal, connection_id,
2360 (struct sockaddr *)&client_sa, dont_fork);
2363 assert(proxy_mode == false);
2367 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2368 TAILQ_FOREACH(portal, &pg->pg_portals, p_next)
2369 nfds = fd_add(portal->p_socket, &fdset, nfds);
2371 error = select(nfds + 1, &fdset, NULL, NULL, NULL);
2375 log_err(1, "select");
2377 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2378 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
2379 if (!FD_ISSET(portal->p_socket, &fdset))
2381 client_salen = sizeof(client_sa);
2382 client_fd = accept(portal->p_socket,
2383 (struct sockaddr *)&client_sa,
2385 if (client_fd < 0) {
2386 if (errno == ECONNABORTED)
2388 log_err(1, "accept");
2390 assert(client_salen >= client_sa.ss_len);
2392 handle_connection(portal, client_fd,
2393 (struct sockaddr *)&client_sa,
2398 #ifdef ICL_KERNEL_PROXY
2405 sighup_handler(int dummy __unused)
2408 sighup_received = true;
2412 sigterm_handler(int dummy __unused)
2415 sigterm_received = true;
2419 sigchld_handler(int dummy __unused)
2423 * The only purpose of this handler is to make SIGCHLD
2424 * interrupt the ISCSIDWAIT ioctl(2), so we can call
2425 * wait_for_children().
2430 register_signals(void)
2432 struct sigaction sa;
2435 bzero(&sa, sizeof(sa));
2436 sa.sa_handler = sighup_handler;
2437 sigfillset(&sa.sa_mask);
2438 error = sigaction(SIGHUP, &sa, NULL);
2440 log_err(1, "sigaction");
2442 sa.sa_handler = sigterm_handler;
2443 error = sigaction(SIGTERM, &sa, NULL);
2445 log_err(1, "sigaction");
2447 sa.sa_handler = sigterm_handler;
2448 error = sigaction(SIGINT, &sa, NULL);
2450 log_err(1, "sigaction");
2452 sa.sa_handler = sigchld_handler;
2453 error = sigaction(SIGCHLD, &sa, NULL);
2455 log_err(1, "sigaction");
2459 main(int argc, char **argv)
2461 struct conf *oldconf, *newconf, *tmpconf;
2463 const char *config_path = DEFAULT_CONFIG_PATH;
2464 int debug = 0, ch, error;
2465 bool dont_daemonize = false;
2467 while ((ch = getopt(argc, argv, "df:R")) != -1) {
2470 dont_daemonize = true;
2474 config_path = optarg;
2477 #ifndef ICL_KERNEL_PROXY
2478 log_errx(1, "ctld(8) compiled without ICL_KERNEL_PROXY "
2479 "does not support iSER protocol");
2495 oldconf = conf_new_from_kernel();
2496 newconf = conf_new_from_file(config_path, oldconf);
2497 if (newconf == NULL)
2498 log_errx(1, "configuration error; exiting");
2500 oldconf->conf_debug = debug;
2501 newconf->conf_debug = debug;
2504 error = conf_apply(oldconf, newconf);
2506 log_errx(1, "failed to apply configuration; exiting");
2508 conf_delete(oldconf);
2513 if (dont_daemonize == false) {
2514 log_debugx("daemonizing");
2515 if (daemon(0, 0) == -1) {
2516 log_warn("cannot daemonize");
2517 pidfile_remove(newconf->conf_pidfh);
2522 /* Schedule iSNS update */
2523 if (!TAILQ_EMPTY(&newconf->conf_isns))
2524 set_timeout((newconf->conf_isns_period + 2) / 3, false);
2527 main_loop(newconf, dont_daemonize);
2528 if (sighup_received) {
2529 sighup_received = false;
2530 log_debugx("received SIGHUP, reloading configuration");
2531 tmpconf = conf_new_from_file(config_path, newconf);
2532 if (tmpconf == NULL) {
2533 log_warnx("configuration error, "
2534 "continuing with old configuration");
2537 tmpconf->conf_debug = debug;
2540 error = conf_apply(oldconf, newconf);
2542 log_warnx("failed to reload "
2544 conf_delete(oldconf);
2547 } else if (sigterm_received) {
2548 log_debugx("exiting on signal; "
2549 "reloading empty configuration");
2551 log_debugx("removing CTL iSCSI ports "
2552 "and terminating all connections");
2555 newconf = conf_new();
2557 newconf->conf_debug = debug;
2558 error = conf_apply(oldconf, newconf);
2560 log_warnx("failed to apply configuration");
2561 conf_delete(oldconf);
2564 log_warnx("exiting on signal");
2567 nchildren -= wait_for_children(false);
2568 assert(nchildren >= 0);
2570 set_timeout(0, false);
2571 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next)
2573 /* Schedule iSNS update */
2574 if (!TAILQ_EMPTY(&newconf->conf_isns)) {
2575 set_timeout((newconf->conf_isns_period