1/*-
2 * Copyright (c) 2012 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Edward Tomasz Napierala under sponsorship
6 * from the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
16 *
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
27 * SUCH DAMAGE.
28 *
29 */
30
31#include <sys/cdefs.h>
|
32__FBSDID("$FreeBSD: stable/10/usr.sbin/ctld/ctld.c 279003 2015-02-19 14:33:46Z mav $");
|
| 32__FBSDID("$FreeBSD: stable/10/usr.sbin/ctld/ctld.c 279006 2015-02-19 14:52:01Z mav $"); |
33
34#include <sys/types.h>
35#include <sys/time.h>
36#include <sys/socket.h>
37#include <sys/wait.h>
38#include <netinet/in.h>
39#include <arpa/inet.h>
40#include <assert.h>
41#include <ctype.h>
42#include <errno.h>
43#include <netdb.h>
44#include <signal.h>
45#include <stdbool.h>
46#include <stdio.h>
47#include <stdint.h>
48#include <stdlib.h>
49#include <string.h>
50#include <unistd.h>
51
52#include "ctld.h"
53#include "isns.h"
54
55bool proxy_mode = false;
56
57static volatile bool sighup_received = false;
58static volatile bool sigterm_received = false;
59static volatile bool sigalrm_received = false;
60
61static int nchildren = 0;
62static uint16_t last_portal_group_tag = 0;
63
64static void
65usage(void)
66{
67
68 fprintf(stderr, "usage: ctld [-d][-f config-file]\n");
69 exit(1);
70}
71
72char *
73checked_strdup(const char *s)
74{
75 char *c;
76
77 c = strdup(s);
78 if (c == NULL)
79 log_err(1, "strdup");
80 return (c);
81}
82
83struct conf *
84conf_new(void)
85{
86 struct conf *conf;
87
88 conf = calloc(1, sizeof(*conf));
89 if (conf == NULL)
90 log_err(1, "calloc");
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_isns);
97
98 conf->conf_isns_period = 900;
99 conf->conf_isns_timeout = 5;
100 conf->conf_debug = 0;
101 conf->conf_timeout = 60;
102 conf->conf_maxproc = 30;
103
104 return (conf);
105}
106
107void
108conf_delete(struct conf *conf)
109{
110 struct lun *lun, *ltmp;
111 struct target *targ, *tmp;
112 struct auth_group *ag, *cagtmp;
113 struct portal_group *pg, *cpgtmp;
114 struct isns *is, *istmp;
115
116 assert(conf->conf_pidfh == NULL);
117
118 TAILQ_FOREACH_SAFE(lun, &conf->conf_luns, l_next, ltmp)
119 lun_delete(lun);
120 TAILQ_FOREACH_SAFE(targ, &conf->conf_targets, t_next, tmp)
121 target_delete(targ);
122 TAILQ_FOREACH_SAFE(ag, &conf->conf_auth_groups, ag_next, cagtmp)
123 auth_group_delete(ag);
124 TAILQ_FOREACH_SAFE(pg, &conf->conf_portal_groups, pg_next, cpgtmp)
125 portal_group_delete(pg);
126 TAILQ_FOREACH_SAFE(is, &conf->conf_isns, i_next, istmp)
127 isns_delete(is);
|
| 128 assert(TAILQ_EMPTY(&conf->conf_ports)); |
129 free(conf->conf_pidfile_path);
130 free(conf);
131}
132
133static struct auth *
134auth_new(struct auth_group *ag)
135{
136 struct auth *auth;
137
138 auth = calloc(1, sizeof(*auth));
139 if (auth == NULL)
140 log_err(1, "calloc");
141 auth->a_auth_group = ag;
142 TAILQ_INSERT_TAIL(&ag->ag_auths, auth, a_next);
143 return (auth);
144}
145
146static void
147auth_delete(struct auth *auth)
148{
149 TAILQ_REMOVE(&auth->a_auth_group->ag_auths, auth, a_next);
150
151 free(auth->a_user);
152 free(auth->a_secret);
153 free(auth->a_mutual_user);
154 free(auth->a_mutual_secret);
155 free(auth);
156}
157
158const struct auth *
159auth_find(const struct auth_group *ag, const char *user)
160{
161 const struct auth *auth;
162
163 TAILQ_FOREACH(auth, &ag->ag_auths, a_next) {
164 if (strcmp(auth->a_user, user) == 0)
165 return (auth);
166 }
167
168 return (NULL);
169}
170
171static void
172auth_check_secret_length(struct auth *auth)
173{
174 size_t len;
175
176 len = strlen(auth->a_secret);
177 if (len > 16) {
178 if (auth->a_auth_group->ag_name != NULL)
179 log_warnx("secret for user \"%s\", auth-group \"%s\", "
180 "is too long; it should be at most 16 characters "
181 "long", auth->a_user, auth->a_auth_group->ag_name);
182 else
183 log_warnx("secret for user \"%s\", target \"%s\", "
184 "is too long; it should be at most 16 characters "
185 "long", auth->a_user,
186 auth->a_auth_group->ag_target->t_name);
187 }
188 if (len < 12) {
189 if (auth->a_auth_group->ag_name != NULL)
190 log_warnx("secret for user \"%s\", auth-group \"%s\", "
191 "is too short; it should be at least 12 characters "
192 "long", auth->a_user,
193 auth->a_auth_group->ag_name);
194 else
195 log_warnx("secret for user \"%s\", target \"%s\", "
196 "is too short; it should be at least 16 characters "
197 "long", auth->a_user,
198 auth->a_auth_group->ag_target->t_name);
199 }
200
201 if (auth->a_mutual_secret != NULL) {
202 len = strlen(auth->a_secret);
203 if (len > 16) {
204 if (auth->a_auth_group->ag_name != NULL)
205 log_warnx("mutual secret for user \"%s\", "
206 "auth-group \"%s\", is too long; it should "
207 "be at most 16 characters long",
208 auth->a_user, auth->a_auth_group->ag_name);
209 else
210 log_warnx("mutual secret for user \"%s\", "
211 "target \"%s\", is too long; it should "
212 "be at most 16 characters long",
213 auth->a_user,
214 auth->a_auth_group->ag_target->t_name);
215 }
216 if (len < 12) {
217 if (auth->a_auth_group->ag_name != NULL)
218 log_warnx("mutual secret for user \"%s\", "
219 "auth-group \"%s\", is too short; it "
220 "should be at least 12 characters long",
221 auth->a_user, auth->a_auth_group->ag_name);
222 else
223 log_warnx("mutual secret for user \"%s\", "
224 "target \"%s\", is too short; it should be "
225 "at least 16 characters long",
226 auth->a_user,
227 auth->a_auth_group->ag_target->t_name);
228 }
229 }
230}
231
232const struct auth *
233auth_new_chap(struct auth_group *ag, const char *user,
234 const char *secret)
235{
236 struct auth *auth;
237
238 if (ag->ag_type == AG_TYPE_UNKNOWN)
239 ag->ag_type = AG_TYPE_CHAP;
240 if (ag->ag_type != AG_TYPE_CHAP) {
241 if (ag->ag_name != NULL)
242 log_warnx("cannot mix \"chap\" authentication with "
243 "other types for auth-group \"%s\"", ag->ag_name);
244 else
245 log_warnx("cannot mix \"chap\" authentication with "
246 "other types for target \"%s\"",
247 ag->ag_target->t_name);
248 return (NULL);
249 }
250
251 auth = auth_new(ag);
252 auth->a_user = checked_strdup(user);
253 auth->a_secret = checked_strdup(secret);
254
255 auth_check_secret_length(auth);
256
257 return (auth);
258}
259
260const struct auth *
261auth_new_chap_mutual(struct auth_group *ag, const char *user,
262 const char *secret, const char *user2, const char *secret2)
263{
264 struct auth *auth;
265
266 if (ag->ag_type == AG_TYPE_UNKNOWN)
267 ag->ag_type = AG_TYPE_CHAP_MUTUAL;
268 if (ag->ag_type != AG_TYPE_CHAP_MUTUAL) {
269 if (ag->ag_name != NULL)
270 log_warnx("cannot mix \"chap-mutual\" authentication "
271 "with other types for auth-group \"%s\"",
272 ag->ag_name);
273 else
274 log_warnx("cannot mix \"chap-mutual\" authentication "
275 "with other types for target \"%s\"",
276 ag->ag_target->t_name);
277 return (NULL);
278 }
279
280 auth = auth_new(ag);
281 auth->a_user = checked_strdup(user);
282 auth->a_secret = checked_strdup(secret);
283 auth->a_mutual_user = checked_strdup(user2);
284 auth->a_mutual_secret = checked_strdup(secret2);
285
286 auth_check_secret_length(auth);
287
288 return (auth);
289}
290
291const struct auth_name *
292auth_name_new(struct auth_group *ag, const char *name)
293{
294 struct auth_name *an;
295
296 an = calloc(1, sizeof(*an));
297 if (an == NULL)
298 log_err(1, "calloc");
299 an->an_auth_group = ag;
300 an->an_initator_name = checked_strdup(name);
301 TAILQ_INSERT_TAIL(&ag->ag_names, an, an_next);
302 return (an);
303}
304
305static void
306auth_name_delete(struct auth_name *an)
307{
308 TAILQ_REMOVE(&an->an_auth_group->ag_names, an, an_next);
309
310 free(an->an_initator_name);
311 free(an);
312}
313
314bool
315auth_name_defined(const struct auth_group *ag)
316{
317 if (TAILQ_EMPTY(&ag->ag_names))
318 return (false);
319 return (true);
320}
321
322const struct auth_name *
323auth_name_find(const struct auth_group *ag, const char *name)
324{
325 const struct auth_name *auth_name;
326
327 TAILQ_FOREACH(auth_name, &ag->ag_names, an_next) {
328 if (strcmp(auth_name->an_initator_name, name) == 0)
329 return (auth_name);
330 }
331
332 return (NULL);
333}
334
335int
336auth_name_check(const struct auth_group *ag, const char *initiator_name)
337{
338 if (!auth_name_defined(ag))
339 return (0);
340
341 if (auth_name_find(ag, initiator_name) == NULL)
342 return (1);
343
344 return (0);
345}
346
347const struct auth_portal *
348auth_portal_new(struct auth_group *ag, const char *portal)
349{
350 struct auth_portal *ap;
351 char *net, *mask, *str, *tmp;
352 int len, dm, m;
353
354 ap = calloc(1, sizeof(*ap));
355 if (ap == NULL)
356 log_err(1, "calloc");
357 ap->ap_auth_group = ag;
358 ap->ap_initator_portal = checked_strdup(portal);
359 mask = str = checked_strdup(portal);
360 net = strsep(&mask, "/");
361 if (net[0] == '[')
362 net++;
363 len = strlen(net);
364 if (len == 0)
365 goto error;
366 if (net[len - 1] == ']')
367 net[len - 1] = 0;
368 if (strchr(net, ':') != NULL) {
369 struct sockaddr_in6 *sin6 =
370 (struct sockaddr_in6 *)&ap->ap_sa;
371
372 sin6->sin6_len = sizeof(*sin6);
373 sin6->sin6_family = AF_INET6;
374 if (inet_pton(AF_INET6, net, &sin6->sin6_addr) <= 0)
375 goto error;
376 dm = 128;
377 } else {
378 struct sockaddr_in *sin =
379 (struct sockaddr_in *)&ap->ap_sa;
380
381 sin->sin_len = sizeof(*sin);
382 sin->sin_family = AF_INET;
383 if (inet_pton(AF_INET, net, &sin->sin_addr) <= 0)
384 goto error;
385 dm = 32;
386 }
387 if (mask != NULL) {
388 m = strtol(mask, &tmp, 0);
389 if (m < 0 || m > dm || tmp[0] != 0)
390 goto error;
391 } else
392 m = dm;
393 ap->ap_mask = m;
394 free(str);
395 TAILQ_INSERT_TAIL(&ag->ag_portals, ap, ap_next);
396 return (ap);
397
398error:
399 log_errx(1, "Incorrect initiator portal '%s'", portal);
400 return (NULL);
401}
402
403static void
404auth_portal_delete(struct auth_portal *ap)
405{
406 TAILQ_REMOVE(&ap->ap_auth_group->ag_portals, ap, ap_next);
407
408 free(ap->ap_initator_portal);
409 free(ap);
410}
411
412bool
413auth_portal_defined(const struct auth_group *ag)
414{
415 if (TAILQ_EMPTY(&ag->ag_portals))
416 return (false);
417 return (true);
418}
419
420const struct auth_portal *
421auth_portal_find(const struct auth_group *ag, const struct sockaddr_storage *ss)
422{
423 const struct auth_portal *ap;
424 const uint8_t *a, *b;
425 int i;
426 uint8_t bmask;
427
428 TAILQ_FOREACH(ap, &ag->ag_portals, ap_next) {
429 if (ap->ap_sa.ss_family != ss->ss_family)
430 continue;
431 if (ss->ss_family == AF_INET) {
432 a = (const uint8_t *)
433 &((const struct sockaddr_in *)ss)->sin_addr;
434 b = (const uint8_t *)
435 &((const struct sockaddr_in *)&ap->ap_sa)->sin_addr;
436 } else {
437 a = (const uint8_t *)
438 &((const struct sockaddr_in6 *)ss)->sin6_addr;
439 b = (const uint8_t *)
440 &((const struct sockaddr_in6 *)&ap->ap_sa)->sin6_addr;
441 }
442 for (i = 0; i < ap->ap_mask / 8; i++) {
443 if (a[i] != b[i])
444 goto next;
445 }
446 if (ap->ap_mask % 8) {
447 bmask = 0xff << (8 - (ap->ap_mask % 8));
448 if ((a[i] & bmask) != (b[i] & bmask))
449 goto next;
450 }
451 return (ap);
452next:
453 ;
454 }
455
456 return (NULL);
457}
458
459int
460auth_portal_check(const struct auth_group *ag, const struct sockaddr_storage *sa)
461{
462
463 if (!auth_portal_defined(ag))
464 return (0);
465
466 if (auth_portal_find(ag, sa) == NULL)
467 return (1);
468
469 return (0);
470}
471
472struct auth_group *
473auth_group_new(struct conf *conf, const char *name)
474{
475 struct auth_group *ag;
476
477 if (name != NULL) {
478 ag = auth_group_find(conf, name);
479 if (ag != NULL) {
480 log_warnx("duplicated auth-group \"%s\"", name);
481 return (NULL);
482 }
483 }
484
485 ag = calloc(1, sizeof(*ag));
486 if (ag == NULL)
487 log_err(1, "calloc");
488 if (name != NULL)
489 ag->ag_name = checked_strdup(name);
490 TAILQ_INIT(&ag->ag_auths);
491 TAILQ_INIT(&ag->ag_names);
492 TAILQ_INIT(&ag->ag_portals);
493 ag->ag_conf = conf;
494 TAILQ_INSERT_TAIL(&conf->conf_auth_groups, ag, ag_next);
495
496 return (ag);
497}
498
499void
500auth_group_delete(struct auth_group *ag)
501{
502 struct auth *auth, *auth_tmp;
503 struct auth_name *auth_name, *auth_name_tmp;
504 struct auth_portal *auth_portal, *auth_portal_tmp;
505
506 TAILQ_REMOVE(&ag->ag_conf->conf_auth_groups, ag, ag_next);
507
508 TAILQ_FOREACH_SAFE(auth, &ag->ag_auths, a_next, auth_tmp)
509 auth_delete(auth);
510 TAILQ_FOREACH_SAFE(auth_name, &ag->ag_names, an_next, auth_name_tmp)
511 auth_name_delete(auth_name);
512 TAILQ_FOREACH_SAFE(auth_portal, &ag->ag_portals, ap_next,
513 auth_portal_tmp)
514 auth_portal_delete(auth_portal);
515 free(ag->ag_name);
516 free(ag);
517}
518
519struct auth_group *
520auth_group_find(const struct conf *conf, const char *name)
521{
522 struct auth_group *ag;
523
524 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
525 if (ag->ag_name != NULL && strcmp(ag->ag_name, name) == 0)
526 return (ag);
527 }
528
529 return (NULL);
530}
531
532int
533auth_group_set_type(struct auth_group *ag, const char *str)
534{
535 int type;
536
537 if (strcmp(str, "none") == 0) {
538 type = AG_TYPE_NO_AUTHENTICATION;
539 } else if (strcmp(str, "deny") == 0) {
540 type = AG_TYPE_DENY;
541 } else if (strcmp(str, "chap") == 0) {
542 type = AG_TYPE_CHAP;
543 } else if (strcmp(str, "chap-mutual") == 0) {
544 type = AG_TYPE_CHAP_MUTUAL;
545 } else {
546 if (ag->ag_name != NULL)
547 log_warnx("invalid auth-type \"%s\" for auth-group "
548 "\"%s\"", str, ag->ag_name);
549 else
550 log_warnx("invalid auth-type \"%s\" for target "
551 "\"%s\"", str, ag->ag_target->t_name);
552 return (1);
553 }
554
555 if (ag->ag_type != AG_TYPE_UNKNOWN && ag->ag_type != type) {
556 if (ag->ag_name != NULL) {
557 log_warnx("cannot set auth-type to \"%s\" for "
558 "auth-group \"%s\"; already has a different "
559 "type", str, ag->ag_name);
560 } else {
561 log_warnx("cannot set auth-type to \"%s\" for target "
562 "\"%s\"; already has a different type",
563 str, ag->ag_target->t_name);
564 }
565 return (1);
566 }
567
568 ag->ag_type = type;
569
570 return (0);
571}
572
573static struct portal *
574portal_new(struct portal_group *pg)
575{
576 struct portal *portal;
577
578 portal = calloc(1, sizeof(*portal));
579 if (portal == NULL)
580 log_err(1, "calloc");
581 TAILQ_INIT(&portal->p_targets);
582 portal->p_portal_group = pg;
583 TAILQ_INSERT_TAIL(&pg->pg_portals, portal, p_next);
584 return (portal);
585}
586
587static void
588portal_delete(struct portal *portal)
589{
590
591 TAILQ_REMOVE(&portal->p_portal_group->pg_portals, portal, p_next);
592 if (portal->p_ai != NULL)
593 freeaddrinfo(portal->p_ai);
594 free(portal->p_listen);
595 free(portal);
596}
597
598struct portal_group *
599portal_group_new(struct conf *conf, const char *name)
600{
601 struct portal_group *pg;
602
603 pg = portal_group_find(conf, name);
604 if (pg != NULL) {
605 log_warnx("duplicated portal-group \"%s\"", name);
606 return (NULL);
607 }
608
609 pg = calloc(1, sizeof(*pg));
610 if (pg == NULL)
611 log_err(1, "calloc");
612 pg->pg_name = checked_strdup(name);
613 TAILQ_INIT(&pg->pg_portals);
|
| 614 TAILQ_INIT(&pg->pg_ports); |
615 pg->pg_conf = conf;
616 pg->pg_tag = 0; /* Assigned later in conf_apply(). */
617 TAILQ_INSERT_TAIL(&conf->conf_portal_groups, pg, pg_next);
618
619 return (pg);
620}
621
622void
623portal_group_delete(struct portal_group *pg)
624{
625 struct portal *portal, *tmp;
|
| 626 struct port *port, *tport; |
627
|
628 TAILQ_FOREACH_SAFE(port, &pg->pg_ports, p_pgs, tport)
629 port_delete(port); |
630 TAILQ_REMOVE(&pg->pg_conf->conf_portal_groups, pg, pg_next);
631
632 TAILQ_FOREACH_SAFE(portal, &pg->pg_portals, p_next, tmp)
633 portal_delete(portal);
634 free(pg->pg_name);
635 free(pg->pg_redirection);
636 free(pg);
637}
638
639struct portal_group *
640portal_group_find(const struct conf *conf, const char *name)
641{
642 struct portal_group *pg;
643
644 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
645 if (strcmp(pg->pg_name, name) == 0)
646 return (pg);
647 }
648
649 return (NULL);
650}
651
652static int
653parse_addr_port(char *arg, const char *def_port, struct addrinfo **ai)
654{
655 struct addrinfo hints;
656 char *str, *addr, *ch;
657 const char *port;
658 int error, colons = 0;
659
660 str = arg = strdup(arg);
661 if (arg[0] == '[') {
662 /*
663 * IPv6 address in square brackets, perhaps with port.
664 */
665 arg++;
666 addr = strsep(&arg, "]");
667 if (arg == NULL)
668 return (1);
669 if (arg[0] == '\0') {
670 port = def_port;
671 } else if (arg[0] == ':') {
672 port = arg + 1;
673 } else {
674 free(str);
675 return (1);
676 }
677 } else {
678 /*
679 * Either IPv6 address without brackets - and without
680 * a port - or IPv4 address. Just count the colons.
681 */
682 for (ch = arg; *ch != '\0'; ch++) {
683 if (*ch == ':')
684 colons++;
685 }
686 if (colons > 1) {
687 addr = arg;
688 port = def_port;
689 } else {
690 addr = strsep(&arg, ":");
691 if (arg == NULL)
692 port = def_port;
693 else
694 port = arg;
695 }
696 }
697
698 memset(&hints, 0, sizeof(hints));
699 hints.ai_family = PF_UNSPEC;
700 hints.ai_socktype = SOCK_STREAM;
701 hints.ai_flags = AI_PASSIVE;
702 error = getaddrinfo(addr, port, &hints, ai);
703 free(str);
704 return ((error != 0) ? 1 : 0);
705}
706
707int
708portal_group_add_listen(struct portal_group *pg, const char *value, bool iser)
709{
710 struct portal *portal;
711
712 portal = portal_new(pg);
713 portal->p_listen = checked_strdup(value);
714 portal->p_iser = iser;
715
716 if (parse_addr_port(portal->p_listen, "3260", &portal->p_ai)) {
717 log_warnx("invalid listen address %s", portal->p_listen);
718 portal_delete(portal);
719 return (1);
720 }
721
722 /*
723 * XXX: getaddrinfo(3) may return multiple addresses; we should turn
724 * those into multiple portals.
725 */
726
727 return (0);
728}
729
730int
731isns_new(struct conf *conf, const char *addr)
732{
733 struct isns *isns;
734
735 isns = calloc(1, sizeof(*isns));
736 if (isns == NULL)
737 log_err(1, "calloc");
738 isns->i_conf = conf;
739 TAILQ_INSERT_TAIL(&conf->conf_isns, isns, i_next);
740 isns->i_addr = checked_strdup(addr);
741
742 if (parse_addr_port(isns->i_addr, "3205", &isns->i_ai)) {
743 log_warnx("invalid iSNS address %s", isns->i_addr);
744 isns_delete(isns);
745 return (1);
746 }
747
748 /*
749 * XXX: getaddrinfo(3) may return multiple addresses; we should turn
750 * those into multiple servers.
751 */
752
753 return (0);
754}
755
756void
757isns_delete(struct isns *isns)
758{
759
760 TAILQ_REMOVE(&isns->i_conf->conf_isns, isns, i_next);
761 free(isns->i_addr);
762 if (isns->i_ai != NULL)
763 freeaddrinfo(isns->i_ai);
764 free(isns);
765}
766
767static int
768isns_do_connect(struct isns *isns)
769{
770 int s;
771
772 s = socket(isns->i_ai->ai_family, isns->i_ai->ai_socktype,
773 isns->i_ai->ai_protocol);
774 if (s < 0) {
775 log_warn("socket(2) failed for %s", isns->i_addr);
776 return (-1);
777 }
778 if (connect(s, isns->i_ai->ai_addr, isns->i_ai->ai_addrlen)) {
779 log_warn("connect(2) failed for %s", isns->i_addr);
780 close(s);
781 return (-1);
782 }
783 return(s);
784}
785
786static int
787isns_do_register(struct isns *isns, int s, const char *hostname)
788{
789 struct conf *conf = isns->i_conf;
790 struct target *target;
791 struct portal *portal;
792 struct portal_group *pg;
|
| 793 struct port *port; |
794 struct isns_req *req;
795 int res = 0;
796 uint32_t error;
797
798 req = isns_req_create(ISNS_FUNC_DEVATTRREG, ISNS_FLAG_CLIENT);
799 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
800 isns_req_add_delim(req);
801 isns_req_add_str(req, 1, hostname);
802 isns_req_add_32(req, 2, 2); /* 2 -- iSCSI */
803 isns_req_add_32(req, 6, conf->conf_isns_period);
804 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
805 if (pg->pg_unassigned)
806 continue;
807 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
808 isns_req_add_addr(req, 16, portal->p_ai);
809 isns_req_add_port(req, 17, portal->p_ai);
810 }
811 }
812 TAILQ_FOREACH(target, &conf->conf_targets, t_next) {
813 isns_req_add_str(req, 32, target->t_name);
814 isns_req_add_32(req, 33, 1); /* 1 -- Target*/
815 if (target->t_alias != NULL)
816 isns_req_add_str(req, 34, target->t_alias);
|
810 pg = target->t_portal_group;
811 isns_req_add_32(req, 51, pg->pg_tag);
812 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
813 isns_req_add_addr(req, 49, portal->p_ai);
814 isns_req_add_port(req, 50, portal->p_ai);
|
817 TAILQ_FOREACH(port, &target->t_ports, p_ts) {
818 if ((pg = port->p_portal_group) == NULL)
819 continue;
820 isns_req_add_32(req, 51, pg->pg_tag);
821 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
822 isns_req_add_addr(req, 49, portal->p_ai);
823 isns_req_add_port(req, 50, portal->p_ai);
824 } |
825 }
826 }
827 res = isns_req_send(s, req);
828 if (res < 0) {
829 log_warn("send(2) failed for %s", isns->i_addr);
830 goto quit;
831 }
832 res = isns_req_receive(s, req);
833 if (res < 0) {
834 log_warn("receive(2) failed for %s", isns->i_addr);
835 goto quit;
836 }
837 error = isns_req_get_status(req);
838 if (error != 0) {
839 log_warnx("iSNS register error %d for %s", error, isns->i_addr);
840 res = -1;
841 }
842quit:
843 isns_req_free(req);
844 return (res);
845}
846
847static int
848isns_do_check(struct isns *isns, int s, const char *hostname)
849{
850 struct conf *conf = isns->i_conf;
851 struct isns_req *req;
852 int res = 0;
853 uint32_t error;
854
855 req = isns_req_create(ISNS_FUNC_DEVATTRQRY, ISNS_FLAG_CLIENT);
856 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
857 isns_req_add_str(req, 1, hostname);
858 isns_req_add_delim(req);
859 isns_req_add(req, 2, 0, NULL);
860 res = isns_req_send(s, req);
861 if (res < 0) {
862 log_warn("send(2) failed for %s", isns->i_addr);
863 goto quit;
864 }
865 res = isns_req_receive(s, req);
866 if (res < 0) {
867 log_warn("receive(2) failed for %s", isns->i_addr);
868 goto quit;
869 }
870 error = isns_req_get_status(req);
871 if (error != 0) {
872 log_warnx("iSNS check error %d for %s", error, isns->i_addr);
873 res = -1;
874 }
875quit:
876 isns_req_free(req);
877 return (res);
878}
879
880static int
881isns_do_deregister(struct isns *isns, int s, const char *hostname)
882{
883 struct conf *conf = isns->i_conf;
884 struct isns_req *req;
885 int res = 0;
886 uint32_t error;
887
888 req = isns_req_create(ISNS_FUNC_DEVDEREG, ISNS_FLAG_CLIENT);
889 isns_req_add_str(req, 32, TAILQ_FIRST(&conf->conf_targets)->t_name);
890 isns_req_add_delim(req);
891 isns_req_add_str(req, 1, hostname);
892 res = isns_req_send(s, req);
893 if (res < 0) {
894 log_warn("send(2) failed for %s", isns->i_addr);
895 goto quit;
896 }
897 res = isns_req_receive(s, req);
898 if (res < 0) {
899 log_warn("receive(2) failed for %s", isns->i_addr);
900 goto quit;
901 }
902 error = isns_req_get_status(req);
903 if (error != 0) {
904 log_warnx("iSNS deregister error %d for %s", error, isns->i_addr);
905 res = -1;
906 }
907quit:
908 isns_req_free(req);
909 return (res);
910}
911
912void
913isns_register(struct isns *isns, struct isns *oldisns)
914{
915 struct conf *conf = isns->i_conf;
916 int s;
917 char hostname[256];
918
919 if (TAILQ_EMPTY(&conf->conf_targets) ||
920 TAILQ_EMPTY(&conf->conf_portal_groups))
921 return;
922 set_timeout(conf->conf_isns_timeout, false);
923 s = isns_do_connect(isns);
924 if (s < 0) {
925 set_timeout(0, false);
926 return;
927 }
928 gethostname(hostname, sizeof(hostname));
929
930 if (oldisns == NULL || TAILQ_EMPTY(&oldisns->i_conf->conf_targets))
931 oldisns = isns;
932 isns_do_deregister(oldisns, s, hostname);
933 isns_do_register(isns, s, hostname);
934 close(s);
935 set_timeout(0, false);
936}
937
938void
939isns_check(struct isns *isns)
940{
941 struct conf *conf = isns->i_conf;
942 int s, res;
943 char hostname[256];
944
945 if (TAILQ_EMPTY(&conf->conf_targets) ||
946 TAILQ_EMPTY(&conf->conf_portal_groups))
947 return;
948 set_timeout(conf->conf_isns_timeout, false);
949 s = isns_do_connect(isns);
950 if (s < 0) {
951 set_timeout(0, false);
952 return;
953 }
954 gethostname(hostname, sizeof(hostname));
955
956 res = isns_do_check(isns, s, hostname);
957 if (res < 0) {
958 isns_do_deregister(isns, s, hostname);
959 isns_do_register(isns, s, hostname);
960 }
961 close(s);
962 set_timeout(0, false);
963}
964
965void
966isns_deregister(struct isns *isns)
967{
968 struct conf *conf = isns->i_conf;
969 int s;
970 char hostname[256];
971
972 if (TAILQ_EMPTY(&conf->conf_targets) ||
973 TAILQ_EMPTY(&conf->conf_portal_groups))
974 return;
975 set_timeout(conf->conf_isns_timeout, false);
976 s = isns_do_connect(isns);
977 if (s < 0)
978 return;
979 gethostname(hostname, sizeof(hostname));
980
981 isns_do_deregister(isns, s, hostname);
982 close(s);
983 set_timeout(0, false);
984}
985
986int
987portal_group_set_filter(struct portal_group *pg, const char *str)
988{
989 int filter;
990
991 if (strcmp(str, "none") == 0) {
992 filter = PG_FILTER_NONE;
993 } else if (strcmp(str, "portal") == 0) {
994 filter = PG_FILTER_PORTAL;
995 } else if (strcmp(str, "portal-name") == 0) {
996 filter = PG_FILTER_PORTAL_NAME;
997 } else if (strcmp(str, "portal-name-auth") == 0) {
998 filter = PG_FILTER_PORTAL_NAME_AUTH;
999 } else {
1000 log_warnx("invalid discovery-filter \"%s\" for portal-group "
1001 "\"%s\"; valid values are \"none\", \"portal\", "
1002 "\"portal-name\", and \"portal-name-auth\"",
1003 str, pg->pg_name);
1004 return (1);
1005 }
1006
1007 if (pg->pg_discovery_filter != PG_FILTER_UNKNOWN &&
1008 pg->pg_discovery_filter != filter) {
1009 log_warnx("cannot set discovery-filter to \"%s\" for "
1010 "portal-group \"%s\"; already has a different "
1011 "value", str, pg->pg_name);
1012 return (1);
1013 }
1014
1015 pg->pg_discovery_filter = filter;
1016
1017 return (0);
1018}
1019
1020int
1021portal_group_set_redirection(struct portal_group *pg, const char *addr)
1022{
1023
1024 if (pg->pg_redirection != NULL) {
1025 log_warnx("cannot set redirection to \"%s\" for "
1026 "portal-group \"%s\"; already defined",
1027 addr, pg->pg_name);
1028 return (1);
1029 }
1030
1031 pg->pg_redirection = checked_strdup(addr);
1032
1033 return (0);
1034}
1035
1036static bool
1037valid_hex(const char ch)
1038{
1039 switch (ch) {
1040 case '0':
1041 case '1':
1042 case '2':
1043 case '3':
1044 case '4':
1045 case '5':
1046 case '6':
1047 case '7':
1048 case '8':
1049 case '9':
1050 case 'a':
1051 case 'A':
1052 case 'b':
1053 case 'B':
1054 case 'c':
1055 case 'C':
1056 case 'd':
1057 case 'D':
1058 case 'e':
1059 case 'E':
1060 case 'f':
1061 case 'F':
1062 return (true);
1063 default:
1064 return (false);
1065 }
1066}
1067
1068bool
1069valid_iscsi_name(const char *name)
1070{
1071 int i;
1072
1073 if (strlen(name) >= MAX_NAME_LEN) {
1074 log_warnx("overlong name for target \"%s\"; max length allowed "
1075 "by iSCSI specification is %d characters",
1076 name, MAX_NAME_LEN);
1077 return (false);
1078 }
1079
1080 /*
1081 * In the cases below, we don't return an error, just in case the admin
1082 * was right, and we're wrong.
1083 */
1084 if (strncasecmp(name, "iqn.", strlen("iqn.")) == 0) {
1085 for (i = strlen("iqn."); name[i] != '\0'; i++) {
1086 /*
1087 * XXX: We should verify UTF-8 normalisation, as defined
1088 * by 3.2.6.2: iSCSI Name Encoding.
1089 */
1090 if (isalnum(name[i]))
1091 continue;
1092 if (name[i] == '-' || name[i] == '.' || name[i] == ':')
1093 continue;
1094 log_warnx("invalid character \"%c\" in target name "
1095 "\"%s\"; allowed characters are letters, digits, "
1096 "'-', '.', and ':'", name[i], name);
1097 break;
1098 }
1099 /*
1100 * XXX: Check more stuff: valid date and a valid reversed domain.
1101 */
1102 } else if (strncasecmp(name, "eui.", strlen("eui.")) == 0) {
1103 if (strlen(name) != strlen("eui.") + 16)
1104 log_warnx("invalid target name \"%s\"; the \"eui.\" "
1105 "should be followed by exactly 16 hexadecimal "
1106 "digits", name);
1107 for (i = strlen("eui."); name[i] != '\0'; i++) {
1108 if (!valid_hex(name[i])) {
1109 log_warnx("invalid character \"%c\" in target "
1110 "name \"%s\"; allowed characters are 1-9 "
1111 "and A-F", name[i], name);
1112 break;
1113 }
1114 }
1115 } else if (strncasecmp(name, "naa.", strlen("naa.")) == 0) {
1116 if (strlen(name) > strlen("naa.") + 32)
1117 log_warnx("invalid target name \"%s\"; the \"naa.\" "
1118 "should be followed by at most 32 hexadecimal "
1119 "digits", name);
1120 for (i = strlen("naa."); name[i] != '\0'; i++) {
1121 if (!valid_hex(name[i])) {
1122 log_warnx("invalid character \"%c\" in target "
1123 "name \"%s\"; allowed characters are 1-9 "
1124 "and A-F", name[i], name);
1125 break;
1126 }
1127 }
1128 } else {
1129 log_warnx("invalid target name \"%s\"; should start with "
1130 "either \".iqn\", \"eui.\", or \"naa.\"",
1131 name);
1132 }
1133 return (true);
1134}
1135
|
1136struct port *
1137port_new(struct conf *conf, struct target *target, struct portal_group *pg)
1138{
1139 struct port *port;
1140
1141 port = calloc(1, sizeof(*port));
1142 if (port == NULL)
1143 log_err(1, "calloc");
1144 asprintf(&port->p_name, "%s-%s", pg->pg_name, target->t_name);
1145 if (port_find(conf, port->p_name) != NULL) {
1146 log_warnx("duplicate port \"%s\"", port->p_name);
1147 free(port);
1148 return (NULL);
1149 }
1150 port->p_conf = conf;
1151 TAILQ_INSERT_TAIL(&conf->conf_ports, port, p_next);
1152 TAILQ_INSERT_TAIL(&target->t_ports, port, p_ts);
1153 port->p_target = target;
1154 TAILQ_INSERT_TAIL(&pg->pg_ports, port, p_pgs);
1155 port->p_portal_group = pg;
1156 return (port);
1157}
1158
1159struct port *
1160port_find(const struct conf *conf, const char *name)
1161{
1162 struct port *port;
1163
1164 TAILQ_FOREACH(port, &conf->conf_ports, p_next) {
1165 if (strcasecmp(port->p_name, name) == 0)
1166 return (port);
1167 }
1168
1169 return (NULL);
1170}
1171
1172struct port *
1173port_find_in_pg(const struct portal_group *pg, const char *target)
1174{
1175 struct port *port;
1176
1177 TAILQ_FOREACH(port, &pg->pg_ports, p_pgs) {
1178 if (strcasecmp(port->p_target->t_name, target) == 0)
1179 return (port);
1180 }
1181
1182 return (NULL);
1183}
1184
1185void
1186port_delete(struct port *port)
1187{
1188
1189 if (port->p_portal_group)
1190 TAILQ_REMOVE(&port->p_portal_group->pg_ports, port, p_pgs);
1191 if (port->p_target)
1192 TAILQ_REMOVE(&port->p_target->t_ports, port, p_ts);
1193 TAILQ_REMOVE(&port->p_conf->conf_ports, port, p_next);
1194 free(port->p_name);
1195 free(port);
1196}
1197 |
1198struct target *
1199target_new(struct conf *conf, const char *name)
1200{
1201 struct target *targ;
1202 int i, len;
1203
1204 targ = target_find(conf, name);
1205 if (targ != NULL) {
1206 log_warnx("duplicated target \"%s\"", name);
1207 return (NULL);
1208 }
1209 if (valid_iscsi_name(name) == false) {
1210 log_warnx("target name \"%s\" is invalid", name);
1211 return (NULL);
1212 }
1213 targ = calloc(1, sizeof(*targ));
1214 if (targ == NULL)
1215 log_err(1, "calloc");
1216 targ->t_name = checked_strdup(name);
1217
1218 /*
1219 * RFC 3722 requires us to normalize the name to lowercase.
1220 */
1221 len = strlen(name);
1222 for (i = 0; i < len; i++)
1223 targ->t_name[i] = tolower(targ->t_name[i]);
1224
1225 targ->t_conf = conf;
|
| 1226 TAILQ_INIT(&targ->t_ports); |
1227 TAILQ_INSERT_TAIL(&conf->conf_targets, targ, t_next);
1228
1229 return (targ);
1230}
1231
1232void
1233target_delete(struct target *targ)
1234{
|
| 1235 struct port *port, *tport; |
1236
|
1237 TAILQ_FOREACH_SAFE(port, &targ->t_ports, p_ts, tport)
1238 port_delete(port); |
1239 TAILQ_REMOVE(&targ->t_conf->conf_targets, targ, t_next);
1240
1241 free(targ->t_name);
1242 free(targ->t_redirection);
1243 free(targ);
1244}
1245
1246struct target *
1247target_find(struct conf *conf, const char *name)
1248{
1249 struct target *targ;
1250
1251 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1252 if (strcasecmp(targ->t_name, name) == 0)
1253 return (targ);
1254 }
1255
1256 return (NULL);
1257}
1258
1259int
1260target_set_redirection(struct target *target, const char *addr)
1261{
1262
1263 if (target->t_redirection != NULL) {
1264 log_warnx("cannot set redirection to \"%s\" for "
1265 "target \"%s\"; already defined",
1266 addr, target->t_name);
1267 return (1);
1268 }
1269
1270 target->t_redirection = checked_strdup(addr);
1271
1272 return (0);
1273}
1274
|
1199void
1200target_set_ctl_port(struct target *target, uint32_t value)
1201{
1202
1203 target->t_ctl_port = value;
1204}
1205
|
1275struct lun *
1276lun_new(struct conf *conf, const char *name)
1277{
1278 struct lun *lun;
1279
1280 lun = lun_find(conf, name);
1281 if (lun != NULL) {
1282 log_warnx("duplicated lun \"%s\"", name);
1283 return (NULL);
1284 }
1285
1286 lun = calloc(1, sizeof(*lun));
1287 if (lun == NULL)
1288 log_err(1, "calloc");
1289 lun->l_conf = conf;
1290 lun->l_name = checked_strdup(name);
1291 TAILQ_INIT(&lun->l_options);
1292 TAILQ_INSERT_TAIL(&conf->conf_luns, lun, l_next);
1293
1294 return (lun);
1295}
1296
1297void
1298lun_delete(struct lun *lun)
1299{
1300 struct target *targ;
1301 struct lun_option *lo, *tmp;
1302 int i;
1303
1304 TAILQ_FOREACH(targ, &lun->l_conf->conf_targets, t_next) {
1305 for (i = 0; i < MAX_LUNS; i++) {
1306 if (targ->t_luns[i] == lun)
1307 targ->t_luns[i] = NULL;
1308 }
1309 }
1310 TAILQ_REMOVE(&lun->l_conf->conf_luns, lun, l_next);
1311
1312 TAILQ_FOREACH_SAFE(lo, &lun->l_options, lo_next, tmp)
1313 lun_option_delete(lo);
1314 free(lun->l_name);
1315 free(lun->l_backend);
1316 free(lun->l_device_id);
1317 free(lun->l_path);
1318 free(lun->l_scsiname);
1319 free(lun->l_serial);
1320 free(lun);
1321}
1322
1323struct lun *
1324lun_find(const struct conf *conf, const char *name)
1325{
1326 struct lun *lun;
1327
1328 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1329 if (strcmp(lun->l_name, name) == 0)
1330 return (lun);
1331 }
1332
1333 return (NULL);
1334}
1335
1336void
1337lun_set_backend(struct lun *lun, const char *value)
1338{
1339 free(lun->l_backend);
1340 lun->l_backend = checked_strdup(value);
1341}
1342
1343void
1344lun_set_blocksize(struct lun *lun, size_t value)
1345{
1346
1347 lun->l_blocksize = value;
1348}
1349
1350void
1351lun_set_device_id(struct lun *lun, const char *value)
1352{
1353 free(lun->l_device_id);
1354 lun->l_device_id = checked_strdup(value);
1355}
1356
1357void
1358lun_set_path(struct lun *lun, const char *value)
1359{
1360 free(lun->l_path);
1361 lun->l_path = checked_strdup(value);
1362}
1363
1364void
1365lun_set_scsiname(struct lun *lun, const char *value)
1366{
1367 free(lun->l_scsiname);
1368 lun->l_scsiname = checked_strdup(value);
1369}
1370
1371void
1372lun_set_serial(struct lun *lun, const char *value)
1373{
1374 free(lun->l_serial);
1375 lun->l_serial = checked_strdup(value);
1376}
1377
1378void
1379lun_set_size(struct lun *lun, size_t value)
1380{
1381
1382 lun->l_size = value;
1383}
1384
1385void
1386lun_set_ctl_lun(struct lun *lun, uint32_t value)
1387{
1388
1389 lun->l_ctl_lun = value;
1390}
1391
1392struct lun_option *
1393lun_option_new(struct lun *lun, const char *name, const char *value)
1394{
1395 struct lun_option *lo;
1396
1397 lo = lun_option_find(lun, name);
1398 if (lo != NULL) {
1399 log_warnx("duplicated lun option \"%s\" for lun \"%s\"",
1400 name, lun->l_name);
1401 return (NULL);
1402 }
1403
1404 lo = calloc(1, sizeof(*lo));
1405 if (lo == NULL)
1406 log_err(1, "calloc");
1407 lo->lo_name = checked_strdup(name);
1408 lo->lo_value = checked_strdup(value);
1409 lo->lo_lun = lun;
1410 TAILQ_INSERT_TAIL(&lun->l_options, lo, lo_next);
1411
1412 return (lo);
1413}
1414
1415void
1416lun_option_delete(struct lun_option *lo)
1417{
1418
1419 TAILQ_REMOVE(&lo->lo_lun->l_options, lo, lo_next);
1420
1421 free(lo->lo_name);
1422 free(lo->lo_value);
1423 free(lo);
1424}
1425
1426struct lun_option *
1427lun_option_find(const struct lun *lun, const char *name)
1428{
1429 struct lun_option *lo;
1430
1431 TAILQ_FOREACH(lo, &lun->l_options, lo_next) {
1432 if (strcmp(lo->lo_name, name) == 0)
1433 return (lo);
1434 }
1435
1436 return (NULL);
1437}
1438
1439void
1440lun_option_set(struct lun_option *lo, const char *value)
1441{
1442
1443 free(lo->lo_value);
1444 lo->lo_value = checked_strdup(value);
1445}
1446
1447static struct connection *
1448connection_new(struct portal *portal, int fd, const char *host,
1449 const struct sockaddr *client_sa)
1450{
1451 struct connection *conn;
1452
1453 conn = calloc(1, sizeof(*conn));
1454 if (conn == NULL)
1455 log_err(1, "calloc");
1456 conn->conn_portal = portal;
1457 conn->conn_socket = fd;
1458 conn->conn_initiator_addr = checked_strdup(host);
1459 memcpy(&conn->conn_initiator_sa, client_sa, client_sa->sa_len);
1460
1461 /*
1462 * Default values, from RFC 3720, section 12.
1463 */
1464 conn->conn_max_data_segment_length = 8192;
1465 conn->conn_max_burst_length = 262144;
1466 conn->conn_immediate_data = true;
1467
1468 return (conn);
1469}
1470
1471#if 0
1472static void
1473conf_print(struct conf *conf)
1474{
1475 struct auth_group *ag;
1476 struct auth *auth;
1477 struct auth_name *auth_name;
1478 struct auth_portal *auth_portal;
1479 struct portal_group *pg;
1480 struct portal *portal;
1481 struct target *targ;
1482 struct lun *lun;
1483 struct lun_option *lo;
1484
1485 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
1486 fprintf(stderr, "auth-group %s {\n", ag->ag_name);
1487 TAILQ_FOREACH(auth, &ag->ag_auths, a_next)
1488 fprintf(stderr, "\t chap-mutual %s %s %s %s\n",
1489 auth->a_user, auth->a_secret,
1490 auth->a_mutual_user, auth->a_mutual_secret);
1491 TAILQ_FOREACH(auth_name, &ag->ag_names, an_next)
1492 fprintf(stderr, "\t initiator-name %s\n",
1493 auth_name->an_initator_name);
1494 TAILQ_FOREACH(auth_portal, &ag->ag_portals, an_next)
1495 fprintf(stderr, "\t initiator-portal %s\n",
1496 auth_portal->an_initator_portal);
1497 fprintf(stderr, "}\n");
1498 }
1499 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1500 fprintf(stderr, "portal-group %s {\n", pg->pg_name);
1501 TAILQ_FOREACH(portal, &pg->pg_portals, p_next)
1502 fprintf(stderr, "\t listen %s\n", portal->p_listen);
1503 fprintf(stderr, "}\n");
1504 }
1505 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1506 fprintf(stderr, "\tlun %s {\n", lun->l_name);
1507 fprintf(stderr, "\t\tpath %s\n", lun->l_path);
1508 TAILQ_FOREACH(lo, &lun->l_options, lo_next)
1509 fprintf(stderr, "\t\toption %s %s\n",
1510 lo->lo_name, lo->lo_value);
1511 fprintf(stderr, "\t}\n");
1512 }
1513 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1514 fprintf(stderr, "target %s {\n", targ->t_name);
1515 if (targ->t_alias != NULL)
1516 fprintf(stderr, "\t alias %s\n", targ->t_alias);
1517 fprintf(stderr, "}\n");
1518 }
1519}
1520#endif
1521
1522static int
1523conf_verify_lun(struct lun *lun)
1524{
1525 const struct lun *lun2;
1526
1527 if (lun->l_backend == NULL)
1528 lun_set_backend(lun, "block");
1529 if (strcmp(lun->l_backend, "block") == 0) {
1530 if (lun->l_path == NULL) {
1531 log_warnx("missing path for lun \"%s\"",
1532 lun->l_name);
1533 return (1);
1534 }
1535 } else if (strcmp(lun->l_backend, "ramdisk") == 0) {
1536 if (lun->l_size == 0) {
1537 log_warnx("missing size for ramdisk-backed lun \"%s\"",
1538 lun->l_name);
1539 return (1);
1540 }
1541 if (lun->l_path != NULL) {
1542 log_warnx("path must not be specified "
1543 "for ramdisk-backed lun \"%s\"",
1544 lun->l_name);
1545 return (1);
1546 }
1547 }
1548 if (lun->l_blocksize == 0) {
1549 lun_set_blocksize(lun, DEFAULT_BLOCKSIZE);
1550 } else if (lun->l_blocksize < 0) {
1551 log_warnx("invalid blocksize for lun \"%s\"; "
1552 "must be larger than 0", lun->l_name);
1553 return (1);
1554 }
1555 if (lun->l_size != 0 && lun->l_size % lun->l_blocksize != 0) {
1556 log_warnx("invalid size for lun \"%s\"; "
1557 "must be multiple of blocksize", lun->l_name);
1558 return (1);
1559 }
1560 TAILQ_FOREACH(lun2, &lun->l_conf->conf_luns, l_next) {
1561 if (lun == lun2)
1562 continue;
1563 if (lun->l_path != NULL && lun2->l_path != NULL &&
1564 strcmp(lun->l_path, lun2->l_path) == 0) {
1565 log_debugx("WARNING: path \"%s\" duplicated "
1566 "between lun \"%s\", and "
1567 "lun \"%s\"", lun->l_path,
1568 lun->l_name, lun2->l_name);
1569 }
1570 }
1571
1572 return (0);
1573}
1574
1575int
1576conf_verify(struct conf *conf)
1577{
1578 struct auth_group *ag;
1579 struct portal_group *pg;
|
| 1580 struct port *port; |
1581 struct target *targ;
1582 struct lun *lun;
1583 bool found;
1584 int error, i;
1585
1586 if (conf->conf_pidfile_path == NULL)
1587 conf->conf_pidfile_path = checked_strdup(DEFAULT_PIDFILE);
1588
1589 TAILQ_FOREACH(lun, &conf->conf_luns, l_next) {
1590 error = conf_verify_lun(lun);
1591 if (error != 0)
1592 return (error);
1593 }
1594 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1595 if (targ->t_auth_group == NULL) {
1596 targ->t_auth_group = auth_group_find(conf,
1597 "default");
1598 assert(targ->t_auth_group != NULL);
1599 }
|
1530 if (targ->t_portal_group == NULL) {
1531 targ->t_portal_group = portal_group_find(conf,
1532 "default");
1533 assert(targ->t_portal_group != NULL);
|
1600 if (TAILQ_EMPTY(&targ->t_ports)) {
1601 pg = portal_group_find(conf, "default");
1602 assert(pg != NULL);
1603 port_new(conf, targ, pg); |
1604 }
1605 found = false;
1606 for (i = 0; i < MAX_LUNS; i++) {
1607 if (targ->t_luns[i] != NULL)
1608 found = true;
1609 }
1610 if (!found && targ->t_redirection == NULL) {
1611 log_warnx("no LUNs defined for target \"%s\"",
1612 targ->t_name);
1613 }
1614 if (found && targ->t_redirection != NULL) {
1615 log_debugx("target \"%s\" contains luns, "
1616 " but configured for redirection",
1617 targ->t_name);
1618 }
1619 }
1620 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1621 assert(pg->pg_name != NULL);
1622 if (pg->pg_discovery_auth_group == NULL) {
1623 pg->pg_discovery_auth_group =
1624 auth_group_find(conf, "default");
1625 assert(pg->pg_discovery_auth_group != NULL);
1626 }
1627
1628 if (pg->pg_discovery_filter == PG_FILTER_UNKNOWN)
1629 pg->pg_discovery_filter = PG_FILTER_NONE;
1630
|
1561 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1562 if (targ->t_portal_group == pg)
1563 break;
1564 }
1565 if (pg->pg_redirection != NULL) {
1566 if (targ != NULL) {
|
1631 if (!TAILQ_EMPTY(&pg->pg_ports)) {
1632 if (pg->pg_redirection != NULL) { |
1633 log_debugx("portal-group \"%s\" assigned "
|
1568 "to target \"%s\", but configured "
|
| 1634 "to target, but configured " |
1635 "for redirection",
|
1570 pg->pg_name, targ->t_name);
|
| 1636 pg->pg_name); |
1637 }
1638 pg->pg_unassigned = false;
|
1573 } else if (targ != NULL) {
1574 pg->pg_unassigned = false;
|
1639 } else {
1640 if (strcmp(pg->pg_name, "default") != 0)
1641 log_warnx("portal-group \"%s\" not assigned "
1642 "to any target", pg->pg_name);
1643 pg->pg_unassigned = true;
1644 }
1645 }
1646 TAILQ_FOREACH(ag, &conf->conf_auth_groups, ag_next) {
1647 if (ag->ag_name == NULL)
1648 assert(ag->ag_target != NULL);
1649 else
1650 assert(ag->ag_target == NULL);
1651
1652 found = false;
1653 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) {
1654 if (targ->t_auth_group == ag) {
1655 found = true;
1656 break;
1657 }
1658 }
|
1659 TAILQ_FOREACH(port, &conf->conf_ports, p_next) {
1660 if (port->p_auth_group == ag) {
1661 found = true;
1662 break;
1663 }
1664 } |
1665 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
1666 if (pg->pg_discovery_auth_group == ag) {
1667 found = true;
1668 break;
1669 }
1670 }
1671 if (!found && ag->ag_name != NULL &&
1672 strcmp(ag->ag_name, "default") != 0 &&
1673 strcmp(ag->ag_name, "no-authentication") != 0 &&
1674 strcmp(ag->ag_name, "no-access") != 0) {
1675 log_warnx("auth-group \"%s\" not assigned "
1676 "to any target", ag->ag_name);
1677 }
1678 }
1679
1680 return (0);
1681}
1682
1683static int
1684conf_apply(struct conf *oldconf, struct conf *newconf)
1685{
|
1616 struct target *oldtarg, *newtarg, *tmptarg;
|
1686 struct lun *oldlun, *newlun, *tmplun;
1687 struct portal_group *oldpg, *newpg;
1688 struct portal *oldp, *newp;
|
| 1689 struct port *oldport, *newport, *tmpport; |
1690 struct isns *oldns, *newns;
1691 pid_t otherpid;
1692 int changed, cumulated_error = 0, error, sockbuf;
1693 int one = 1;
1694
1695 if (oldconf->conf_debug != newconf->conf_debug) {
1696 log_debugx("changing debug level to %d", newconf->conf_debug);
1697 log_init(newconf->conf_debug);
1698 }
1699
1700 if (oldconf->conf_pidfh != NULL) {
1701 assert(oldconf->conf_pidfile_path != NULL);
1702 if (newconf->conf_pidfile_path != NULL &&
1703 strcmp(oldconf->conf_pidfile_path,
1704 newconf->conf_pidfile_path) == 0) {
1705 newconf->conf_pidfh = oldconf->conf_pidfh;
1706 oldconf->conf_pidfh = NULL;
1707 } else {
1708 log_debugx("removing pidfile %s",
1709 oldconf->conf_pidfile_path);
1710 pidfile_remove(oldconf->conf_pidfh);
1711 oldconf->conf_pidfh = NULL;
1712 }
1713 }
1714
1715 if (newconf->conf_pidfh == NULL && newconf->conf_pidfile_path != NULL) {
1716 log_debugx("opening pidfile %s", newconf->conf_pidfile_path);
1717 newconf->conf_pidfh =
1718 pidfile_open(newconf->conf_pidfile_path, 0600, &otherpid);
1719 if (newconf->conf_pidfh == NULL) {
1720 if (errno == EEXIST)
1721 log_errx(1, "daemon already running, pid: %jd.",
1722 (intmax_t)otherpid);
1723 log_err(1, "cannot open or create pidfile \"%s\"",
1724 newconf->conf_pidfile_path);
1725 }
1726 }
1727
1728 /*
1729 * Go through the new portal groups, assigning tags or preserving old.
1730 */
1731 TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
1732 oldpg = portal_group_find(oldconf, newpg->pg_name);
1733 if (oldpg != NULL)
1734 newpg->pg_tag = oldpg->pg_tag;
1735 else
1736 newpg->pg_tag = ++last_portal_group_tag;
1737 }
1738
1739 /* Deregister on removed iSNS servers. */
1740 TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) {
1741 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) {
1742 if (strcmp(oldns->i_addr, newns->i_addr) == 0)
1743 break;
1744 }
1745 if (newns == NULL)
1746 isns_deregister(oldns);
1747 }
1748
1749 /*
1750 * XXX: If target or lun removal fails, we should somehow "move"
1751 * the old lun or target into newconf, so that subsequent
1752 * conf_apply() would try to remove them again. That would
1753 * be somewhat hairy, though, and lun deletion failures don't
1754 * really happen, so leave it as it is for now.
1755 */
1756 /*
|
1687 * First, remove any targets present in the old configuration
|
| 1757 * First, remove any ports present in the old configuration |
1758 * and missing in the new one.
1759 */
|
1690 TAILQ_FOREACH_SAFE(oldtarg, &oldconf->conf_targets, t_next, tmptarg) {
1691 newtarg = target_find(newconf, oldtarg->t_name);
1692 if (newtarg != NULL)
|
1760 TAILQ_FOREACH_SAFE(oldport, &oldconf->conf_ports, p_next, tmpport) {
1761 newport = port_find(newconf, oldport->p_name);
1762 if (newport != NULL) |
1763 continue;
|
1694 error = kernel_port_remove(oldtarg);
|
| 1764 error = kernel_port_remove(oldport); |
1765 if (error != 0) {
|
1696 log_warnx("failed to remove target %s",
1697 oldtarg->t_name);
|
1766 log_warnx("failed to remove port %s",
1767 oldport->p_name); |
1768 /*
1769 * XXX: Uncomment after fixing the root cause.
1770 *
1771 * cumulated_error++;
1772 */
1773 }
1774 }
1775
1776 /*
1777 * Second, remove any LUNs present in the old configuration
1778 * and missing in the new one.
1779 */
1780 TAILQ_FOREACH_SAFE(oldlun, &oldconf->conf_luns, l_next, tmplun) {
1781 newlun = lun_find(newconf, oldlun->l_name);
1782 if (newlun == NULL) {
1783 log_debugx("lun \"%s\", CTL lun %d "
1784 "not found in new configuration; "
1785 "removing", oldlun->l_name, oldlun->l_ctl_lun);
1786 error = kernel_lun_remove(oldlun);
1787 if (error != 0) {
1788 log_warnx("failed to remove lun \"%s\", "
1789 "CTL lun %d",
1790 oldlun->l_name, oldlun->l_ctl_lun);
1791 cumulated_error++;
1792 }
1793 continue;
1794 }
1795
1796 /*
1797 * Also remove the LUNs changed by more than size.
1798 */
1799 changed = 0;
1800 assert(oldlun->l_backend != NULL);
1801 assert(newlun->l_backend != NULL);
1802 if (strcmp(newlun->l_backend, oldlun->l_backend) != 0) {
1803 log_debugx("backend for lun \"%s\", "
1804 "CTL lun %d changed; removing",
1805 oldlun->l_name, oldlun->l_ctl_lun);
1806 changed = 1;
1807 }
1808 if (oldlun->l_blocksize != newlun->l_blocksize) {
1809 log_debugx("blocksize for lun \"%s\", "
1810 "CTL lun %d changed; removing",
1811 oldlun->l_name, oldlun->l_ctl_lun);
1812 changed = 1;
1813 }
1814 if (newlun->l_device_id != NULL &&
1815 (oldlun->l_device_id == NULL ||
1816 strcmp(oldlun->l_device_id, newlun->l_device_id) !=
1817 0)) {
1818 log_debugx("device-id for lun \"%s\", "
1819 "CTL lun %d changed; removing",
1820 oldlun->l_name, oldlun->l_ctl_lun);
1821 changed = 1;
1822 }
1823 if (newlun->l_path != NULL &&
1824 (oldlun->l_path == NULL ||
1825 strcmp(oldlun->l_path, newlun->l_path) != 0)) {
1826 log_debugx("path for lun \"%s\", "
1827 "CTL lun %d, changed; removing",
1828 oldlun->l_name, oldlun->l_ctl_lun);
1829 changed = 1;
1830 }
1831 if (newlun->l_serial != NULL &&
1832 (oldlun->l_serial == NULL ||
1833 strcmp(oldlun->l_serial, newlun->l_serial) != 0)) {
1834 log_debugx("serial for lun \"%s\", "
1835 "CTL lun %d changed; removing",
1836 oldlun->l_name, oldlun->l_ctl_lun);
1837 changed = 1;
1838 }
1839 if (changed) {
1840 error = kernel_lun_remove(oldlun);
1841 if (error != 0) {
1842 log_warnx("failed to remove lun \"%s\", "
1843 "CTL lun %d",
1844 oldlun->l_name, oldlun->l_ctl_lun);
1845 cumulated_error++;
1846 }
1847 lun_delete(oldlun);
1848 continue;
1849 }
1850
1851 lun_set_ctl_lun(newlun, oldlun->l_ctl_lun);
1852 }
1853
1854 TAILQ_FOREACH_SAFE(newlun, &newconf->conf_luns, l_next, tmplun) {
1855 oldlun = lun_find(oldconf, newlun->l_name);
1856 if (oldlun != NULL) {
1857 if (newlun->l_size != oldlun->l_size ||
1858 newlun->l_size == 0) {
1859 log_debugx("resizing lun \"%s\", CTL lun %d",
1860 newlun->l_name, newlun->l_ctl_lun);
1861 error = kernel_lun_resize(newlun);
1862 if (error != 0) {
1863 log_warnx("failed to "
1864 "resize lun \"%s\", CTL lun %d",
1865 newlun->l_name,
1866 newlun->l_ctl_lun);
1867 cumulated_error++;
1868 }
1869 }
1870 continue;
1871 }
1872 log_debugx("adding lun \"%s\"", newlun->l_name);
1873 error = kernel_lun_add(newlun);
1874 if (error != 0) {
1875 log_warnx("failed to add lun \"%s\"", newlun->l_name);
1876 lun_delete(newlun);
1877 cumulated_error++;
1878 }
1879 }
1880
1881 /*
|
1812 * Now add new targets or modify existing ones.
|
| 1882 * Now add new ports or modify existing ones. |
1883 */
|
1814 TAILQ_FOREACH(newtarg, &newconf->conf_targets, t_next) {
1815 oldtarg = target_find(oldconf, newtarg->t_name);
|
1884 TAILQ_FOREACH(newport, &newconf->conf_ports, p_next) {
1885 oldport = port_find(oldconf, newport->p_name); |
1886
|
1817 if (oldtarg == NULL)
1818 error = kernel_port_add(newtarg);
1819 else {
1820 target_set_ctl_port(newtarg, oldtarg->t_ctl_port);
1821 error = kernel_port_update(newtarg);
|
1887 if (oldport == NULL) {
1888 error = kernel_port_add(newport);
1889 } else {
1890 newport->p_ctl_port = oldport->p_ctl_port;
1891 error = kernel_port_update(newport); |
1892 }
1893 if (error != 0) {
|
1824 log_warnx("failed to %s target %s",
1825 (oldtarg == NULL) ? "add" : "update",
1826 newtarg->t_name);
|
1894 log_warnx("failed to %s port %s",
1895 (oldport == NULL) ? "add" : "update",
1896 newport->p_name); |
1897 /*
1898 * XXX: Uncomment after fixing the root cause.
1899 *
1900 * cumulated_error++;
1901 */
1902 }
1903 }
1904
1905 /*
1906 * Go through the new portals, opening the sockets as neccessary.
1907 */
1908 TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
1909 if (newpg->pg_unassigned) {
1910 log_debugx("not listening on portal-group \"%s\", "
1911 "not assigned to any target",
1912 newpg->pg_name);
1913 continue;
1914 }
1915 TAILQ_FOREACH(newp, &newpg->pg_portals, p_next) {
1916 /*
1917 * Try to find already open portal and reuse
1918 * the listening socket. We don't care about
1919 * what portal or portal group that was, what
1920 * matters is the listening address.
1921 */
1922 TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups,
1923 pg_next) {
1924 TAILQ_FOREACH(oldp, &oldpg->pg_portals,
1925 p_next) {
1926 if (strcmp(newp->p_listen,
1927 oldp->p_listen) == 0 &&
1928 oldp->p_socket > 0) {
1929 newp->p_socket =
1930 oldp->p_socket;
1931 oldp->p_socket = 0;
1932 break;
1933 }
1934 }
1935 }
1936 if (newp->p_socket > 0) {
1937 /*
1938 * We're done with this portal.
1939 */
1940 continue;
1941 }
1942
1943#ifdef ICL_KERNEL_PROXY
1944 if (proxy_mode) {
1945 newpg->pg_conf->conf_portal_id++;
1946 newp->p_id = newpg->pg_conf->conf_portal_id;
1947 log_debugx("listening on %s, portal-group "
1948 "\"%s\", portal id %d, using ICL proxy",
1949 newp->p_listen, newpg->pg_name, newp->p_id);
1950 kernel_listen(newp->p_ai, newp->p_iser,
1951 newp->p_id);
1952 continue;
1953 }
1954#endif
1955 assert(proxy_mode == false);
1956 assert(newp->p_iser == false);
1957
1958 log_debugx("listening on %s, portal-group \"%s\"",
1959 newp->p_listen, newpg->pg_name);
1960 newp->p_socket = socket(newp->p_ai->ai_family,
1961 newp->p_ai->ai_socktype,
1962 newp->p_ai->ai_protocol);
1963 if (newp->p_socket < 0) {
1964 log_warn("socket(2) failed for %s",
1965 newp->p_listen);
1966 cumulated_error++;
1967 continue;
1968 }
1969 sockbuf = SOCKBUF_SIZE;
1970 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_RCVBUF,
1971 &sockbuf, sizeof(sockbuf)) == -1)
1972 log_warn("setsockopt(SO_RCVBUF) failed "
1973 "for %s", newp->p_listen);
1974 sockbuf = SOCKBUF_SIZE;
1975 if (setsockopt(newp->p_socket, SOL_SOCKET, SO_SNDBUF,
1976 &sockbuf, sizeof(sockbuf)) == -1)
1977 log_warn("setsockopt(SO_SNDBUF) failed "
1978 "for %s", newp->p_listen);
1979 error = setsockopt(newp->p_socket, SOL_SOCKET,
1980 SO_REUSEADDR, &one, sizeof(one));
1981 if (error != 0) {
1982 log_warn("setsockopt(SO_REUSEADDR) failed "
1983 "for %s", newp->p_listen);
1984 close(newp->p_socket);
1985 newp->p_socket = 0;
1986 cumulated_error++;
1987 continue;
1988 }
1989 error = bind(newp->p_socket, newp->p_ai->ai_addr,
1990 newp->p_ai->ai_addrlen);
1991 if (error != 0) {
1992 log_warn("bind(2) failed for %s",
1993 newp->p_listen);
1994 close(newp->p_socket);
1995 newp->p_socket = 0;
1996 cumulated_error++;
1997 continue;
1998 }
1999 error = listen(newp->p_socket, -1);
2000 if (error != 0) {
2001 log_warn("listen(2) failed for %s",
2002 newp->p_listen);
2003 close(newp->p_socket);
2004 newp->p_socket = 0;
2005 cumulated_error++;
2006 continue;
2007 }
2008 }
2009 }
2010
2011 /*
2012 * Go through the no longer used sockets, closing them.
2013 */
2014 TAILQ_FOREACH(oldpg, &oldconf->conf_portal_groups, pg_next) {
2015 TAILQ_FOREACH(oldp, &oldpg->pg_portals, p_next) {
2016 if (oldp->p_socket <= 0)
2017 continue;
2018 log_debugx("closing socket for %s, portal-group \"%s\"",
2019 oldp->p_listen, oldpg->pg_name);
2020 close(oldp->p_socket);
2021 oldp->p_socket = 0;
2022 }
2023 }
2024
2025 /* (Re-)Register on remaining/new iSNS servers. */
2026 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next) {
2027 TAILQ_FOREACH(oldns, &oldconf->conf_isns, i_next) {
2028 if (strcmp(oldns->i_addr, newns->i_addr) == 0)
2029 break;
2030 }
2031 isns_register(newns, oldns);
2032 }
2033
2034 /* Schedule iSNS update */
2035 if (!TAILQ_EMPTY(&newconf->conf_isns))
2036 set_timeout((newconf->conf_isns_period + 2) / 3, false);
2037
2038 return (cumulated_error);
2039}
2040
2041bool
2042timed_out(void)
2043{
2044
2045 return (sigalrm_received);
2046}
2047
2048static void
2049sigalrm_handler_fatal(int dummy __unused)
2050{
2051 /*
2052 * It would be easiest to just log an error and exit. We can't
2053 * do this, though, because log_errx() is not signal safe, since
2054 * it calls syslog(3). Instead, set a flag checked by pdu_send()
2055 * and pdu_receive(), to call log_errx() there. Should they fail
2056 * to notice, we'll exit here one second later.
2057 */
2058 if (sigalrm_received) {
2059 /*
2060 * Oh well. Just give up and quit.
2061 */
2062 _exit(2);
2063 }
2064
2065 sigalrm_received = true;
2066}
2067
2068static void
2069sigalrm_handler(int dummy __unused)
2070{
2071
2072 sigalrm_received = true;
2073}
2074
2075void
2076set_timeout(int timeout, int fatal)
2077{
2078 struct sigaction sa;
2079 struct itimerval itv;
2080 int error;
2081
2082 if (timeout <= 0) {
2083 log_debugx("session timeout disabled");
2084 bzero(&itv, sizeof(itv));
2085 error = setitimer(ITIMER_REAL, &itv, NULL);
2086 if (error != 0)
2087 log_err(1, "setitimer");
2088 sigalrm_received = false;
2089 return;
2090 }
2091
2092 sigalrm_received = false;
2093 bzero(&sa, sizeof(sa));
2094 if (fatal)
2095 sa.sa_handler = sigalrm_handler_fatal;
2096 else
2097 sa.sa_handler = sigalrm_handler;
2098 sigfillset(&sa.sa_mask);
2099 error = sigaction(SIGALRM, &sa, NULL);
2100 if (error != 0)
2101 log_err(1, "sigaction");
2102
2103 /*
2104 * First SIGALRM will arive after conf_timeout seconds.
2105 * If we do nothing, another one will arrive a second later.
2106 */
2107 log_debugx("setting session timeout to %d seconds", timeout);
2108 bzero(&itv, sizeof(itv));
2109 itv.it_interval.tv_sec = 1;
2110 itv.it_value.tv_sec = timeout;
2111 error = setitimer(ITIMER_REAL, &itv, NULL);
2112 if (error != 0)
2113 log_err(1, "setitimer");
2114}
2115
2116static int
2117wait_for_children(bool block)
2118{
2119 pid_t pid;
2120 int status;
2121 int num = 0;
2122
2123 for (;;) {
2124 /*
2125 * If "block" is true, wait for at least one process.
2126 */
2127 if (block && num == 0)
2128 pid = wait4(-1, &status, 0, NULL);
2129 else
2130 pid = wait4(-1, &status, WNOHANG, NULL);
2131 if (pid <= 0)
2132 break;
2133 if (WIFSIGNALED(status)) {
2134 log_warnx("child process %d terminated with signal %d",
2135 pid, WTERMSIG(status));
2136 } else if (WEXITSTATUS(status) != 0) {
2137 log_warnx("child process %d terminated with exit status %d",
2138 pid, WEXITSTATUS(status));
2139 } else {
2140 log_debugx("child process %d terminated gracefully", pid);
2141 }
2142 num++;
2143 }
2144
2145 return (num);
2146}
2147
2148static void
2149handle_connection(struct portal *portal, int fd,
2150 const struct sockaddr *client_sa, bool dont_fork)
2151{
2152 struct connection *conn;
2153 int error;
2154 pid_t pid;
2155 char host[NI_MAXHOST + 1];
2156 struct conf *conf;
2157
2158 conf = portal->p_portal_group->pg_conf;
2159
2160 if (dont_fork) {
2161 log_debugx("incoming connection; not forking due to -d flag");
2162 } else {
2163 nchildren -= wait_for_children(false);
2164 assert(nchildren >= 0);
2165
2166 while (conf->conf_maxproc > 0 && nchildren >= conf->conf_maxproc) {
2167 log_debugx("maxproc limit of %d child processes hit; "
2168 "waiting for child process to exit", conf->conf_maxproc);
2169 nchildren -= wait_for_children(true);
2170 assert(nchildren >= 0);
2171 }
2172 log_debugx("incoming connection; forking child process #%d",
2173 nchildren);
2174 nchildren++;
2175 pid = fork();
2176 if (pid < 0)
2177 log_err(1, "fork");
2178 if (pid > 0) {
2179 close(fd);
2180 return;
2181 }
2182 }
2183 pidfile_close(conf->conf_pidfh);
2184
2185 error = getnameinfo(client_sa, client_sa->sa_len,
2186 host, sizeof(host), NULL, 0, NI_NUMERICHOST);
2187 if (error != 0)
2188 log_errx(1, "getnameinfo: %s", gai_strerror(error));
2189
2190 log_debugx("accepted connection from %s; portal group \"%s\"",
2191 host, portal->p_portal_group->pg_name);
2192 log_set_peer_addr(host);
2193 setproctitle("%s", host);
2194
2195 conn = connection_new(portal, fd, host, client_sa);
2196 set_timeout(conf->conf_timeout, true);
2197 kernel_capsicate();
2198 login(conn);
2199 if (conn->conn_session_type == CONN_SESSION_TYPE_NORMAL) {
2200 kernel_handoff(conn);
2201 log_debugx("connection handed off to the kernel");
2202 } else {
2203 assert(conn->conn_session_type == CONN_SESSION_TYPE_DISCOVERY);
2204 discovery(conn);
2205 }
2206 log_debugx("nothing more to do; exiting");
2207 exit(0);
2208}
2209
2210static int
2211fd_add(int fd, fd_set *fdset, int nfds)
2212{
2213
2214 /*
2215 * Skip sockets which we failed to bind.
2216 */
2217 if (fd <= 0)
2218 return (nfds);
2219
2220 FD_SET(fd, fdset);
2221 if (fd > nfds)
2222 nfds = fd;
2223 return (nfds);
2224}
2225
2226static void
2227main_loop(struct conf *conf, bool dont_fork)
2228{
2229 struct portal_group *pg;
2230 struct portal *portal;
2231 struct sockaddr_storage client_sa;
2232 socklen_t client_salen;
2233#ifdef ICL_KERNEL_PROXY
2234 int connection_id;
2235 int portal_id;
2236#endif
2237 fd_set fdset;
2238 int error, nfds, client_fd;
2239
2240 pidfile_write(conf->conf_pidfh);
2241
2242 for (;;) {
2243 if (sighup_received || sigterm_received || timed_out())
2244 return;
2245
2246#ifdef ICL_KERNEL_PROXY
2247 if (proxy_mode) {
2248 client_salen = sizeof(client_sa);
2249 kernel_accept(&connection_id, &portal_id,
2250 (struct sockaddr *)&client_sa, &client_salen);
2251 assert(client_salen >= client_sa.ss_len);
2252
2253 log_debugx("incoming connection, id %d, portal id %d",
2254 connection_id, portal_id);
2255 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2256 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
2257 if (portal->p_id == portal_id) {
2258 goto found;
2259 }
2260 }
2261 }
2262
2263 log_errx(1, "kernel returned invalid portal_id %d",
2264 portal_id);
2265
2266found:
2267 handle_connection(portal, connection_id,
2268 (struct sockaddr *)&client_sa, dont_fork);
2269 } else {
2270#endif
2271 assert(proxy_mode == false);
2272
2273 FD_ZERO(&fdset);
2274 nfds = 0;
2275 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2276 TAILQ_FOREACH(portal, &pg->pg_portals, p_next)
2277 nfds = fd_add(portal->p_socket, &fdset, nfds);
2278 }
2279 error = select(nfds + 1, &fdset, NULL, NULL, NULL);
2280 if (error <= 0) {
2281 if (errno == EINTR)
2282 return;
2283 log_err(1, "select");
2284 }
2285 TAILQ_FOREACH(pg, &conf->conf_portal_groups, pg_next) {
2286 TAILQ_FOREACH(portal, &pg->pg_portals, p_next) {
2287 if (!FD_ISSET(portal->p_socket, &fdset))
2288 continue;
2289 client_salen = sizeof(client_sa);
2290 client_fd = accept(portal->p_socket,
2291 (struct sockaddr *)&client_sa,
2292 &client_salen);
2293 if (client_fd < 0)
2294 log_err(1, "accept");
2295 assert(client_salen >= client_sa.ss_len);
2296
2297 handle_connection(portal, client_fd,
2298 (struct sockaddr *)&client_sa,
2299 dont_fork);
2300 break;
2301 }
2302 }
2303#ifdef ICL_KERNEL_PROXY
2304 }
2305#endif
2306 }
2307}
2308
2309static void
2310sighup_handler(int dummy __unused)
2311{
2312
2313 sighup_received = true;
2314}
2315
2316static void
2317sigterm_handler(int dummy __unused)
2318{
2319
2320 sigterm_received = true;
2321}
2322
2323static void
2324sigchld_handler(int dummy __unused)
2325{
2326
2327 /*
2328 * The only purpose of this handler is to make SIGCHLD
2329 * interrupt the ISCSIDWAIT ioctl(2), so we can call
2330 * wait_for_children().
2331 */
2332}
2333
2334static void
2335register_signals(void)
2336{
2337 struct sigaction sa;
2338 int error;
2339
2340 bzero(&sa, sizeof(sa));
2341 sa.sa_handler = sighup_handler;
2342 sigfillset(&sa.sa_mask);
2343 error = sigaction(SIGHUP, &sa, NULL);
2344 if (error != 0)
2345 log_err(1, "sigaction");
2346
2347 sa.sa_handler = sigterm_handler;
2348 error = sigaction(SIGTERM, &sa, NULL);
2349 if (error != 0)
2350 log_err(1, "sigaction");
2351
2352 sa.sa_handler = sigterm_handler;
2353 error = sigaction(SIGINT, &sa, NULL);
2354 if (error != 0)
2355 log_err(1, "sigaction");
2356
2357 sa.sa_handler = sigchld_handler;
2358 error = sigaction(SIGCHLD, &sa, NULL);
2359 if (error != 0)
2360 log_err(1, "sigaction");
2361}
2362
2363int
2364main(int argc, char **argv)
2365{
2366 struct conf *oldconf, *newconf, *tmpconf;
2367 struct isns *newns;
2368 const char *config_path = DEFAULT_CONFIG_PATH;
2369 int debug = 0, ch, error;
2370 bool dont_daemonize = false;
2371
2372 while ((ch = getopt(argc, argv, "df:R")) != -1) {
2373 switch (ch) {
2374 case 'd':
2375 dont_daemonize = true;
2376 debug++;
2377 break;
2378 case 'f':
2379 config_path = optarg;
2380 break;
2381 case 'R':
2382#ifndef ICL_KERNEL_PROXY
2383 log_errx(1, "ctld(8) compiled without ICL_KERNEL_PROXY "
2384 "does not support iSER protocol");
2385#endif
2386 proxy_mode = true;
2387 break;
2388 case '?':
2389 default:
2390 usage();
2391 }
2392 }
2393 argc -= optind;
2394 if (argc != 0)
2395 usage();
2396
2397 log_init(debug);
2398 kernel_init();
2399
2400 oldconf = conf_new_from_kernel();
2401 newconf = conf_new_from_file(config_path);
2402 if (newconf == NULL)
2403 log_errx(1, "configuration error; exiting");
2404 if (debug > 0) {
2405 oldconf->conf_debug = debug;
2406 newconf->conf_debug = debug;
2407 }
2408
2409 error = conf_apply(oldconf, newconf);
2410 if (error != 0)
2411 log_errx(1, "failed to apply configuration; exiting");
2412
2413 conf_delete(oldconf);
2414 oldconf = NULL;
2415
2416 register_signals();
2417
2418 if (dont_daemonize == false) {
2419 log_debugx("daemonizing");
2420 if (daemon(0, 0) == -1) {
2421 log_warn("cannot daemonize");
2422 pidfile_remove(newconf->conf_pidfh);
2423 exit(1);
2424 }
2425 }
2426
2427 /* Schedule iSNS update */
2428 if (!TAILQ_EMPTY(&newconf->conf_isns))
2429 set_timeout((newconf->conf_isns_period + 2) / 3, false);
2430
2431 for (;;) {
2432 main_loop(newconf, dont_daemonize);
2433 if (sighup_received) {
2434 sighup_received = false;
2435 log_debugx("received SIGHUP, reloading configuration");
2436 tmpconf = conf_new_from_file(config_path);
2437 if (tmpconf == NULL) {
2438 log_warnx("configuration error, "
2439 "continuing with old configuration");
2440 } else {
2441 if (debug > 0)
2442 tmpconf->conf_debug = debug;
2443 oldconf = newconf;
2444 newconf = tmpconf;
2445 error = conf_apply(oldconf, newconf);
2446 if (error != 0)
2447 log_warnx("failed to reload "
2448 "configuration");
2449 conf_delete(oldconf);
2450 oldconf = NULL;
2451 }
2452 } else if (sigterm_received) {
2453 log_debugx("exiting on signal; "
2454 "reloading empty configuration");
2455
2456 log_debugx("removing CTL iSCSI ports "
2457 "and terminating all connections");
2458
2459 oldconf = newconf;
2460 newconf = conf_new();
2461 if (debug > 0)
2462 newconf->conf_debug = debug;
2463 error = conf_apply(oldconf, newconf);
2464 if (error != 0)
2465 log_warnx("failed to apply configuration");
2466 conf_delete(oldconf);
2467 oldconf = NULL;
2468
2469 log_warnx("exiting on signal");
2470 exit(0);
2471 } else {
2472 nchildren -= wait_for_children(false);
2473 assert(nchildren >= 0);
2474 if (timed_out()) {
2475 set_timeout(0, false);
2476 TAILQ_FOREACH(newns, &newconf->conf_isns, i_next)
2477 isns_check(newns);
2478 /* Schedule iSNS update */
2479 if (!TAILQ_EMPTY(&newconf->conf_isns)) {
2480 set_timeout((newconf->conf_isns_period
2481 + 2) / 3,
2482 false);
2483 }
2484 }
2485 }
2486 }
2487 /* NOTREACHED */
2488}
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