1/*-
2 * Copyright (c) 2003, 2004 Silicon Graphics International Corp.
3 * Copyright (c) 1997-2007 Kenneth D. Merry
4 * Copyright (c) 2012 The FreeBSD Foundation
5 * All rights reserved.
6 *
7 * Portions of this software were developed by Edward Tomasz Napierala
8 * under sponsorship from the FreeBSD Foundation.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions, and the following disclaimer,
15 * without modification.
16 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
17 * substantially similar to the "NO WARRANTY" disclaimer below
18 * ("Disclaimer") and any redistribution must be conditioned upon
19 * including a substantially similar Disclaimer requirement for further
20 * binary redistribution.
21 *
22 * NO WARRANTY
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGES.
34 *
35 */
36
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD: stable/10/usr.sbin/ctld/kernel.c 279055 2015-02-20 17:09:49Z mav $");
39
40#include <sys/ioctl.h>
41#include <sys/types.h>
42#include <sys/stat.h>
43#include <sys/param.h>
44#include <sys/linker.h>
45#include <sys/queue.h>
46#include <sys/callout.h>
47#include <sys/sbuf.h>
48#include <sys/capability.h>
49#include <assert.h>
50#include <bsdxml.h>
51#include <ctype.h>
52#include <errno.h>
53#include <fcntl.h>
54#include <stdint.h>
55#include <stdio.h>
56#include <stdlib.h>
57#include <string.h>
58#include <strings.h>
59#include <cam/scsi/scsi_all.h>
60#include <cam/scsi/scsi_message.h>
61#include <cam/ctl/ctl.h>
62#include <cam/ctl/ctl_io.h>
63#include <cam/ctl/ctl_frontend_internal.h>
64#include <cam/ctl/ctl_backend.h>
65#include <cam/ctl/ctl_ioctl.h>
66#include <cam/ctl/ctl_backend_block.h>
67#include <cam/ctl/ctl_util.h>
68#include <cam/ctl/ctl_scsi_all.h>
69
70#include "ctld.h"
71
72#ifdef ICL_KERNEL_PROXY
73#include <netdb.h>
74#endif
75
76extern bool proxy_mode;
77
78static int ctl_fd = 0;
79
80void
81kernel_init(void)
82{
83 int retval, saved_errno;
84
85 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR);
86 if (ctl_fd < 0 && errno == ENOENT) {
87 saved_errno = errno;
88 retval = kldload("ctl");
89 if (retval != -1)
90 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR);
91 else
92 errno = saved_errno;
93 }
94 if (ctl_fd < 0)
95 log_err(1, "failed to open %s", CTL_DEFAULT_DEV);
96}
97
98/*
99 * Name/value pair used for per-LUN attributes.
100 */
101struct cctl_lun_nv {
102 char *name;
103 char *value;
104 STAILQ_ENTRY(cctl_lun_nv) links;
105};
106
107/*
108 * Backend LUN information.
109 */
110struct cctl_lun {
111 uint64_t lun_id;
112 char *backend_type;
113 uint64_t size_blocks;
114 uint32_t blocksize;
115 char *serial_number;
116 char *device_id;
117 char *ctld_name;
118 STAILQ_HEAD(,cctl_lun_nv) attr_list;
119 STAILQ_ENTRY(cctl_lun) links;
120};
121
122struct cctl_port {
123 uint32_t port_id;
124 char *port_name;
125 int cfiscsi_state;
126 char *cfiscsi_target;
127 uint16_t cfiscsi_portal_group_tag;
128 char *ctld_portal_group_name;
129 STAILQ_HEAD(,cctl_lun_nv) attr_list;
130 STAILQ_ENTRY(cctl_port) links;
131};
132
133struct cctl_devlist_data {
134 int num_luns;
135 STAILQ_HEAD(,cctl_lun) lun_list;
136 struct cctl_lun *cur_lun;
137 int num_ports;
138 STAILQ_HEAD(,cctl_port) port_list;
139 struct cctl_port *cur_port;
140 int level;
141 struct sbuf *cur_sb[32];
142};
143
144static void
145cctl_start_element(void *user_data, const char *name, const char **attr)
146{
147 int i;
148 struct cctl_devlist_data *devlist;
149 struct cctl_lun *cur_lun;
150
151 devlist = (struct cctl_devlist_data *)user_data;
152 cur_lun = devlist->cur_lun;
153 devlist->level++;
154 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
155 sizeof(devlist->cur_sb[0])))
156 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
157 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
158
159 devlist->cur_sb[devlist->level] = sbuf_new_auto();
160 if (devlist->cur_sb[devlist->level] == NULL)
161 log_err(1, "%s: unable to allocate sbuf", __func__);
162
163 if (strcmp(name, "lun") == 0) {
164 if (cur_lun != NULL)
165 log_errx(1, "%s: improper lun element nesting",
166 __func__);
167
168 cur_lun = calloc(1, sizeof(*cur_lun));
169 if (cur_lun == NULL)
170 log_err(1, "%s: cannot allocate %zd bytes", __func__,
171 sizeof(*cur_lun));
172
173 devlist->num_luns++;
174 devlist->cur_lun = cur_lun;
175
176 STAILQ_INIT(&cur_lun->attr_list);
177 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links);
178
179 for (i = 0; attr[i] != NULL; i += 2) {
180 if (strcmp(attr[i], "id") == 0) {
181 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0);
182 } else {
183 log_errx(1, "%s: invalid LUN attribute %s = %s",
184 __func__, attr[i], attr[i+1]);
185 }
186 }
187 }
188}
189
190static void
191cctl_end_element(void *user_data, const char *name)
192{
193 struct cctl_devlist_data *devlist;
194 struct cctl_lun *cur_lun;
195 char *str;
196
197 devlist = (struct cctl_devlist_data *)user_data;
198 cur_lun = devlist->cur_lun;
199
200 if ((cur_lun == NULL)
201 && (strcmp(name, "ctllunlist") != 0))
202 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name);
203
204 if (devlist->cur_sb[devlist->level] == NULL)
205 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
206 devlist->level, name);
207
208 sbuf_finish(devlist->cur_sb[devlist->level]);
209 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
210
211 if (strlen(str) == 0) {
212 free(str);
213 str = NULL;
214 }
215
216 sbuf_delete(devlist->cur_sb[devlist->level]);
217 devlist->cur_sb[devlist->level] = NULL;
218 devlist->level--;
219
220 if (strcmp(name, "backend_type") == 0) {
221 cur_lun->backend_type = str;
222 str = NULL;
223 } else if (strcmp(name, "size") == 0) {
224 cur_lun->size_blocks = strtoull(str, NULL, 0);
225 } else if (strcmp(name, "blocksize") == 0) {
226 cur_lun->blocksize = strtoul(str, NULL, 0);
227 } else if (strcmp(name, "serial_number") == 0) {
228 cur_lun->serial_number = str;
229 str = NULL;
230 } else if (strcmp(name, "device_id") == 0) {
231 cur_lun->device_id = str;
232 str = NULL;
233 } else if (strcmp(name, "ctld_name") == 0) {
234 cur_lun->ctld_name = str;
235 str = NULL;
236 } else if (strcmp(name, "lun") == 0) {
237 devlist->cur_lun = NULL;
238 } else if (strcmp(name, "ctllunlist") == 0) {
239 /* Nothing. */
240 } else {
241 struct cctl_lun_nv *nv;
242
243 nv = calloc(1, sizeof(*nv));
244 if (nv == NULL)
245 log_err(1, "%s: can't allocate %zd bytes for nv pair",
246 __func__, sizeof(*nv));
247
248 nv->name = checked_strdup(name);
249
250 nv->value = str;
251 str = NULL;
252 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links);
253 }
254
255 free(str);
256}
257
258static void
259cctl_start_pelement(void *user_data, const char *name, const char **attr)
260{
261 int i;
262 struct cctl_devlist_data *devlist;
263 struct cctl_port *cur_port;
264
265 devlist = (struct cctl_devlist_data *)user_data;
266 cur_port = devlist->cur_port;
267 devlist->level++;
268 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
269 sizeof(devlist->cur_sb[0])))
270 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
271 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
272
273 devlist->cur_sb[devlist->level] = sbuf_new_auto();
274 if (devlist->cur_sb[devlist->level] == NULL)
275 log_err(1, "%s: unable to allocate sbuf", __func__);
276
277 if (strcmp(name, "targ_port") == 0) {
278 if (cur_port != NULL)
279 log_errx(1, "%s: improper port element nesting (%s)",
280 __func__, name);
281
282 cur_port = calloc(1, sizeof(*cur_port));
283 if (cur_port == NULL)
284 log_err(1, "%s: cannot allocate %zd bytes", __func__,
285 sizeof(*cur_port));
286
287 devlist->num_ports++;
288 devlist->cur_port = cur_port;
289
290 STAILQ_INIT(&cur_port->attr_list);
291 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links);
292
293 for (i = 0; attr[i] != NULL; i += 2) {
294 if (strcmp(attr[i], "id") == 0) {
295 cur_port->port_id = strtoul(attr[i+1], NULL, 0);
296 } else {
297 log_errx(1, "%s: invalid LUN attribute %s = %s",
298 __func__, attr[i], attr[i+1]);
299 }
300 }
301 }
302}
303
304static void
305cctl_end_pelement(void *user_data, const char *name)
306{
307 struct cctl_devlist_data *devlist;
308 struct cctl_port *cur_port;
309 char *str;
310
311 devlist = (struct cctl_devlist_data *)user_data;
312 cur_port = devlist->cur_port;
313
314 if ((cur_port == NULL)
315 && (strcmp(name, "ctlportlist") != 0))
316 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name);
317
318 if (devlist->cur_sb[devlist->level] == NULL)
319 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
320 devlist->level, name);
321
322 sbuf_finish(devlist->cur_sb[devlist->level]);
323 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
324
325 if (strlen(str) == 0) {
326 free(str);
327 str = NULL;
328 }
329
330 sbuf_delete(devlist->cur_sb[devlist->level]);
331 devlist->cur_sb[devlist->level] = NULL;
332 devlist->level--;
333
334 if (strcmp(name, "port_name") == 0) {
335 cur_port->port_name = str;
336 str = NULL;
337 } else if (strcmp(name, "cfiscsi_target") == 0) {
338 cur_port->cfiscsi_target = str;
339 str = NULL;
340 } else if (strcmp(name, "cfiscsi_state") == 0) {
341 cur_port->cfiscsi_state = strtoul(str, NULL, 0);
342 } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) {
343 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0);
344 } else if (strcmp(name, "ctld_portal_group_name") == 0) {
345 cur_port->ctld_portal_group_name = str;
346 str = NULL;
347 } else if (strcmp(name, "targ_port") == 0) {
348 devlist->cur_port = NULL;
349 } else if (strcmp(name, "ctlportlist") == 0) {
350 /* Nothing. */
351 } else {
352 struct cctl_lun_nv *nv;
353
354 nv = calloc(1, sizeof(*nv));
355 if (nv == NULL)
356 log_err(1, "%s: can't allocate %zd bytes for nv pair",
357 __func__, sizeof(*nv));
358
359 nv->name = checked_strdup(name);
360
361 nv->value = str;
362 str = NULL;
363 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links);
364 }
365
366 free(str);
367}
368
369static void
370cctl_char_handler(void *user_data, const XML_Char *str, int len)
371{
372 struct cctl_devlist_data *devlist;
373
374 devlist = (struct cctl_devlist_data *)user_data;
375
376 sbuf_bcat(devlist->cur_sb[devlist->level], str, len);
377}
378
379struct conf *
380conf_new_from_kernel(void)
381{
382 struct conf *conf = NULL;
383 struct target *targ;
384 struct portal_group *pg;
385 struct pport *pp;
386 struct port *cp;
387 struct lun *cl;
388 struct lun_option *lo;
389 struct ctl_lun_list list;
390 struct cctl_devlist_data devlist;
391 struct cctl_lun *lun;
392 struct cctl_port *port;
393 XML_Parser parser;
394 char *str;
395 int len, retval;
396
397 bzero(&devlist, sizeof(devlist));
398 STAILQ_INIT(&devlist.lun_list);
399 STAILQ_INIT(&devlist.port_list);
400
401 log_debugx("obtaining previously configured CTL luns from the kernel");
402
403 str = NULL;
404 len = 4096;
405retry:
406 str = realloc(str, len);
407 if (str == NULL)
408 log_err(1, "realloc");
409
410 bzero(&list, sizeof(list));
411 list.alloc_len = len;
412 list.status = CTL_LUN_LIST_NONE;
413 list.lun_xml = str;
414
415 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) {
416 log_warn("error issuing CTL_LUN_LIST ioctl");
417 free(str);
418 return (NULL);
419 }
420
421 if (list.status == CTL_LUN_LIST_ERROR) {
422 log_warnx("error returned from CTL_LUN_LIST ioctl: %s",
423 list.error_str);
424 free(str);
425 return (NULL);
426 }
427
428 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
429 len = len << 1;
430 goto retry;
431 }
432
433 parser = XML_ParserCreate(NULL);
434 if (parser == NULL) {
435 log_warnx("unable to create XML parser");
436 free(str);
437 return (NULL);
438 }
439
440 XML_SetUserData(parser, &devlist);
441 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element);
442 XML_SetCharacterDataHandler(parser, cctl_char_handler);
443
444 retval = XML_Parse(parser, str, strlen(str), 1);
445 XML_ParserFree(parser);
446 free(str);
447 if (retval != 1) {
448 log_warnx("XML_Parse failed");
449 return (NULL);
450 }
451
452 str = NULL;
453 len = 4096;
454retry_port:
455 str = realloc(str, len);
456 if (str == NULL)
457 log_err(1, "realloc");
458
459 bzero(&list, sizeof(list));
460 list.alloc_len = len;
461 list.status = CTL_LUN_LIST_NONE;
462 list.lun_xml = str;
463
464 if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) {
465 log_warn("error issuing CTL_PORT_LIST ioctl");
466 free(str);
467 return (NULL);
468 }
469
470 if (list.status == CTL_PORT_LIST_ERROR) {
471 log_warnx("error returned from CTL_PORT_LIST ioctl: %s",
472 list.error_str);
473 free(str);
474 return (NULL);
475 }
476
477 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
478 len = len << 1;
479 goto retry_port;
480 }
481
482 parser = XML_ParserCreate(NULL);
483 if (parser == NULL) {
484 log_warnx("unable to create XML parser");
485 free(str);
486 return (NULL);
487 }
488
489 XML_SetUserData(parser, &devlist);
490 XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement);
491 XML_SetCharacterDataHandler(parser, cctl_char_handler);
492
493 retval = XML_Parse(parser, str, strlen(str), 1);
494 XML_ParserFree(parser);
495 free(str);
496 if (retval != 1) {
497 log_warnx("XML_Parse failed");
498 return (NULL);
499 }
500
501 conf = conf_new();
502
503 STAILQ_FOREACH(port, &devlist.port_list, links) {
504
505 if (port->cfiscsi_target == NULL) {
506 log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ",
507 port->port_id, port->port_name);
508 pp = pport_find(conf, port->port_name);
509 if (pp == NULL) {
510#if 0
511 log_debugx("found new kernel port %u \"%s\"",
512 port->port_id, port->port_name);
513#endif
514 pp = pport_new(conf, port->port_name, port->port_id);
515 if (pp == NULL) {
516 log_warnx("pport_new failed");
517 continue;
518 }
519 }
520 continue;
521 }
522 if (port->cfiscsi_state != 1) {
523 log_debugx("CTL port %ju is not active (%d); ignoring",
524 (uintmax_t)port->port_id, port->cfiscsi_state);
525 continue;
526 }
527
528 targ = target_find(conf, port->cfiscsi_target);
529 if (targ == NULL) {
530#if 0
531 log_debugx("found new kernel target %s for CTL port %ld",
532 port->cfiscsi_target, port->port_id);
533#endif
534 targ = target_new(conf, port->cfiscsi_target);
535 if (targ == NULL) {
536 log_warnx("target_new failed");
537 continue;
538 }
539 }
540
541 if (port->ctld_portal_group_name == NULL)
542 continue;
543 pg = portal_group_find(conf, port->ctld_portal_group_name);
544 if (pg == NULL) {
545#if 0
546 log_debugx("found new kernel portal group %s for CTL port %ld",
547 port->ctld_portal_group_name, port->port_id);
548#endif
549 pg = portal_group_new(conf, port->ctld_portal_group_name);
550 if (pg == NULL) {
551 log_warnx("portal_group_new failed");
552 continue;
553 }
554 }
555 pg->pg_tag = port->cfiscsi_portal_group_tag;
556 cp = port_new(conf, targ, pg);
557 if (cp == NULL) {
558 log_warnx("port_new failed");
559 continue;
560 }
561 cp->p_ctl_port = port->port_id;
562 }
563
564 STAILQ_FOREACH(lun, &devlist.lun_list, links) {
565 struct cctl_lun_nv *nv;
566
567 if (lun->ctld_name == NULL) {
568 log_debugx("CTL lun %ju wasn't managed by ctld; "
569 "ignoring", (uintmax_t)lun->lun_id);
570 continue;
571 }
572
573 cl = lun_find(conf, lun->ctld_name);
574 if (cl != NULL) {
575 log_warnx("found CTL lun %ju \"%s\", "
576 "also backed by CTL lun %d; ignoring",
577 (uintmax_t)lun->lun_id, lun->ctld_name,
578 cl->l_ctl_lun);
579 continue;
580 }
581
582 log_debugx("found CTL lun %ju \"%s\"",
583 (uintmax_t)lun->lun_id, lun->ctld_name);
584
585 cl = lun_new(conf, lun->ctld_name);
586 if (cl == NULL) {
587 log_warnx("lun_new failed");
588 continue;
589 }
590 lun_set_backend(cl, lun->backend_type);
591 lun_set_blocksize(cl, lun->blocksize);
592 lun_set_device_id(cl, lun->device_id);
593 lun_set_serial(cl, lun->serial_number);
594 lun_set_size(cl, lun->size_blocks * cl->l_blocksize);
595 lun_set_ctl_lun(cl, lun->lun_id);
596
597 STAILQ_FOREACH(nv, &lun->attr_list, links) {
598 if (strcmp(nv->name, "file") == 0 ||
599 strcmp(nv->name, "dev") == 0) {
600 lun_set_path(cl, nv->value);
601 continue;
602 }
603 lo = lun_option_new(cl, nv->name, nv->value);
604 if (lo == NULL)
605 log_warnx("unable to add CTL lun option %s "
606 "for CTL lun %ju \"%s\"",
607 nv->name, (uintmax_t) lun->lun_id,
608 cl->l_name);
609 }
610 }
611
612 return (conf);
613}
614
615static void
616str_arg(struct ctl_be_arg *arg, const char *name, const char *value)
617{
618
619 arg->namelen = strlen(name) + 1;
620 arg->name = __DECONST(char *, name);
621 arg->vallen = strlen(value) + 1;
622 arg->value = __DECONST(char *, value);
623 arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD;
624}
625
626int
627kernel_lun_add(struct lun *lun)
628{
629 struct lun_option *lo;
630 struct ctl_lun_req req;
631 int error, i, num_options;
632
633 bzero(&req, sizeof(req));
634
635 strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
636 req.reqtype = CTL_LUNREQ_CREATE;
637
638 req.reqdata.create.blocksize_bytes = lun->l_blocksize;
639
640 if (lun->l_size != 0)
641 req.reqdata.create.lun_size_bytes = lun->l_size;
642
643 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE;
644 req.reqdata.create.device_type = T_DIRECT;
645
646 if (lun->l_serial != NULL) {
647 strncpy(req.reqdata.create.serial_num, lun->l_serial,
648 sizeof(req.reqdata.create.serial_num));
649 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM;
650 }
651
652 if (lun->l_device_id != NULL) {
653 strncpy(req.reqdata.create.device_id, lun->l_device_id,
654 sizeof(req.reqdata.create.device_id));
655 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID;
656 }
657
658 if (lun->l_path != NULL) {
659 lo = lun_option_find(lun, "file");
660 if (lo != NULL) {
661 lun_option_set(lo, lun->l_path);
662 } else {
663 lo = lun_option_new(lun, "file", lun->l_path);
664 assert(lo != NULL);
665 }
666 }
667
668 lo = lun_option_find(lun, "ctld_name");
669 if (lo != NULL) {
670 lun_option_set(lo, lun->l_name);
671 } else {
672 lo = lun_option_new(lun, "ctld_name", lun->l_name);
673 assert(lo != NULL);
674 }
675
676 lo = lun_option_find(lun, "scsiname");
677 if (lo == NULL && lun->l_scsiname != NULL) {
678 lo = lun_option_new(lun, "scsiname", lun->l_scsiname);
679 assert(lo != NULL);
680 }
681
682 num_options = 0;
683 TAILQ_FOREACH(lo, &lun->l_options, lo_next)
684 num_options++;
685
686 req.num_be_args = num_options;
687 if (num_options > 0) {
688 req.be_args = malloc(num_options * sizeof(*req.be_args));
689 if (req.be_args == NULL) {
690 log_warn("error allocating %zd bytes",
691 num_options * sizeof(*req.be_args));
692 return (1);
693 }
694
695 i = 0;
696 TAILQ_FOREACH(lo, &lun->l_options, lo_next) {
697 str_arg(&req.be_args[i], lo->lo_name, lo->lo_value);
698 i++;
699 }
700 assert(i == num_options);
701 }
702
703 error = ioctl(ctl_fd, CTL_LUN_REQ, &req);
704 free(req.be_args);
705 if (error != 0) {
706 log_warn("error issuing CTL_LUN_REQ ioctl");
707 return (1);
708 }
709
710 switch (req.status) {
711 case CTL_LUN_ERROR:
712 log_warnx("LUN creation error: %s", req.error_str);
713 return (1);
714 case CTL_LUN_WARNING:
715 log_warnx("LUN creation warning: %s", req.error_str);
716 break;
717 case CTL_LUN_OK:
718 break;
719 default:
720 log_warnx("unknown LUN creation status: %d",
721 req.status);
722 return (1);
723 }
724
725 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id);
726 return (0);
727}
728
729int
730kernel_lun_resize(struct lun *lun)
731{
732 struct ctl_lun_req req;
733
734 bzero(&req, sizeof(req));
735
736 strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
737 req.reqtype = CTL_LUNREQ_MODIFY;
738
739 req.reqdata.modify.lun_id = lun->l_ctl_lun;
740 req.reqdata.modify.lun_size_bytes = lun->l_size;
741
742 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) {
743 log_warn("error issuing CTL_LUN_REQ ioctl");
744 return (1);
745 }
746
747 switch (req.status) {
748 case CTL_LUN_ERROR:
749 log_warnx("LUN modification error: %s", req.error_str);
750 return (1);
751 case CTL_LUN_WARNING:
752 log_warnx("LUN modification warning: %s", req.error_str);
753 break;
754 case CTL_LUN_OK:
755 break;
756 default:
757 log_warnx("unknown LUN modification status: %d",
758 req.status);
759 return (1);
760 }
761
762 return (0);
763}
764
765int
766kernel_lun_remove(struct lun *lun)
767{
768 struct ctl_lun_req req;
769
770 bzero(&req, sizeof(req));
771
772 strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
773 req.reqtype = CTL_LUNREQ_RM;
774
775 req.reqdata.rm.lun_id = lun->l_ctl_lun;
776
777 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) {
778 log_warn("error issuing CTL_LUN_REQ ioctl");
779 return (1);
780 }
781
782 switch (req.status) {
783 case CTL_LUN_ERROR:
784 log_warnx("LUN removal error: %s", req.error_str);
785 return (1);
786 case CTL_LUN_WARNING:
787 log_warnx("LUN removal warning: %s", req.error_str);
788 break;
789 case CTL_LUN_OK:
790 break;
791 default:
792 log_warnx("unknown LUN removal status: %d", req.status);
793 return (1);
794 }
795
796 return (0);
797}
798
799void
800kernel_handoff(struct connection *conn)
801{
802 struct ctl_iscsi req;
803
804 bzero(&req, sizeof(req));
805
806 req.type = CTL_ISCSI_HANDOFF;
807 strlcpy(req.data.handoff.initiator_name,
808 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name));
809 strlcpy(req.data.handoff.initiator_addr,
810 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr));
811 if (conn->conn_initiator_alias != NULL) {
812 strlcpy(req.data.handoff.initiator_alias,
813 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias));
814 }
815 memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid,
816 sizeof(req.data.handoff.initiator_isid));
817 strlcpy(req.data.handoff.target_name,
818 conn->conn_target->t_name, sizeof(req.data.handoff.target_name));
819#ifdef ICL_KERNEL_PROXY
820 if (proxy_mode)
821 req.data.handoff.connection_id = conn->conn_socket;
822 else
823 req.data.handoff.socket = conn->conn_socket;
824#else
825 req.data.handoff.socket = conn->conn_socket;
826#endif
827 req.data.handoff.portal_group_tag =
828 conn->conn_portal->p_portal_group->pg_tag;
829 if (conn->conn_header_digest == CONN_DIGEST_CRC32C)
830 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C;
831 if (conn->conn_data_digest == CONN_DIGEST_CRC32C)
832 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C;
833 req.data.handoff.cmdsn = conn->conn_cmdsn;
834 req.data.handoff.statsn = conn->conn_statsn;
835 req.data.handoff.max_recv_data_segment_length =
836 conn->conn_max_data_segment_length;
837 req.data.handoff.max_burst_length = conn->conn_max_burst_length;
838 req.data.handoff.immediate_data = conn->conn_immediate_data;
839
840 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
841 log_err(1, "error issuing CTL_ISCSI ioctl; "
842 "dropping connection");
843 }
844
845 if (req.status != CTL_ISCSI_OK) {
846 log_errx(1, "error returned from CTL iSCSI handoff request: "
847 "%s; dropping connection", req.error_str);
848 }
849}
850
851int
852kernel_port_add(struct port *port)
853{
854 struct ctl_port_entry entry;
855 struct ctl_req req;
856 struct ctl_lun_map lm;
857 struct target *targ = port->p_target;
858 struct portal_group *pg = port->p_portal_group;
859 char tagstr[16];
860 int error, i, n;
861
862 /* Create iSCSI port. */
863 if (port->p_portal_group) {
864 bzero(&req, sizeof(req));
865 strlcpy(req.driver, "iscsi", sizeof(req.driver));
866 req.reqtype = CTL_REQ_CREATE;
867 req.args = malloc(req.num_args * sizeof(*req.args));
868 n = 0;
869 req.args[n].namelen = sizeof("port_id");
870 req.args[n].name = __DECONST(char *, "port_id");
871 req.args[n].vallen = sizeof(port->p_ctl_port);
872 req.args[n].value = &port->p_ctl_port;
873 req.args[n++].flags = CTL_BEARG_WR;
874 str_arg(&req.args[n++], "cfiscsi_target", targ->t_name);
875 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag);
876 str_arg(&req.args[n++], "cfiscsi_portal_group_tag", tagstr);
877 if (targ->t_alias)
878 str_arg(&req.args[n++], "cfiscsi_target_alias", targ->t_alias);
879 str_arg(&req.args[n++], "ctld_portal_group_name", pg->pg_name);
880 req.num_args = n;
881 error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
882 free(req.args);
883 if (error != 0) {
884 log_warn("error issuing CTL_PORT_REQ ioctl");
885 return (1);
886 }
887 if (req.status == CTL_LUN_ERROR) {
888 log_warnx("error returned from port creation request: %s",
889 req.error_str);
890 return (1);
891 }
892 if (req.status != CTL_LUN_OK) {
893 log_warnx("unknown port creation request status %d",
894 req.status);
895 return (1);
896 }
897 } else if (port->p_pport)
898 port->p_ctl_port = port->p_pport->pp_ctl_port;
899
900 /* Explicitly enable mapping to block any access except allowed. */
901 lm.port = port->p_ctl_port;
902 lm.plun = UINT32_MAX;
903 lm.lun = 0;
904 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
905 if (error != 0)
906 log_warn("CTL_LUN_MAP ioctl failed");
907
908 /* Map configured LUNs */
909 for (i = 0; i < MAX_LUNS; i++) {
910 if (targ->t_luns[i] == NULL)
911 continue;
912 lm.port = port->p_ctl_port;
913 lm.plun = i;
914 lm.lun = targ->t_luns[i]->l_ctl_lun;
915 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
916 if (error != 0)
917 log_warn("CTL_LUN_MAP ioctl failed");
918 }
919
920 /* Enable port */
921 bzero(&entry, sizeof(entry));
922 entry.targ_port = port->p_ctl_port;
923 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry);
924 if (error != 0) {
925 log_warn("CTL_ENABLE_PORT ioctl failed");
926 return (-1);
927 }
928
929 return (0);
930}
931
932int
933kernel_port_update(struct port *port)
934{
935 struct ctl_lun_map lm;
936 struct target *targ = port->p_target;
937 int error, i;
938
939 /* Map configured LUNs and unmap others */
940 for (i = 0; i < MAX_LUNS; i++) {
941 lm.port = port->p_ctl_port;
942 lm.plun = i;
943 if (targ->t_luns[i] == NULL)
944 lm.lun = UINT32_MAX;
945 else
946 lm.lun = targ->t_luns[i]->l_ctl_lun;
947 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
948 if (error != 0)
949 log_warn("CTL_LUN_MAP ioctl failed");
950 }
951 return (0);
952}
953
954int
955kernel_port_remove(struct port *port)
956{
957 struct ctl_port_entry entry;
958 struct ctl_lun_map lm;
959 struct ctl_req req;
960 char tagstr[16];
961 struct target *targ = port->p_target;
962 struct portal_group *pg = port->p_portal_group;
963 int error;
964
965 /* Disable port */
966 bzero(&entry, sizeof(entry));
967 entry.targ_port = port->p_ctl_port;
968 error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry);
969 if (error != 0) {
970 log_warn("CTL_DISABLE_PORT ioctl failed");
971 return (-1);
972 }
973
974 /* Remove iSCSI port. */
975 if (port->p_portal_group) {
976 bzero(&req, sizeof(req));
977 strlcpy(req.driver, "iscsi", sizeof(req.driver));
978 req.reqtype = CTL_REQ_REMOVE;
979 req.num_args = 2;
980 req.args = malloc(req.num_args * sizeof(*req.args));
981 str_arg(&req.args[0], "cfiscsi_target", targ->t_name);
982 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag);
983 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr);
984 error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
985 free(req.args);
986 if (error != 0) {
987 log_warn("error issuing CTL_PORT_REQ ioctl");
988 return (1);
989 }
990 if (req.status == CTL_LUN_ERROR) {
991 log_warnx("error returned from port removal request: %s",
992 req.error_str);
993 return (1);
994 }
995 if (req.status != CTL_LUN_OK) {
996 log_warnx("unknown port removal request status %d",
997 req.status);
998 return (1);
999 }
1000 } else {
1001 /* Disable LUN mapping. */
1002 lm.port = port->p_ctl_port;
1003 lm.plun = UINT32_MAX;
1004 lm.lun = UINT32_MAX;
1005 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1006 if (error != 0)
1007 log_warn("CTL_LUN_MAP ioctl failed");
1008 }
1009 return (0);
1010}
1011
1012#ifdef ICL_KERNEL_PROXY
1013void
1014kernel_listen(struct addrinfo *ai, bool iser, int portal_id)
1015{
1016 struct ctl_iscsi req;
1017
1018 bzero(&req, sizeof(req));
1019
1020 req.type = CTL_ISCSI_LISTEN;
1021 req.data.listen.iser = iser;
1022 req.data.listen.domain = ai->ai_family;
1023 req.data.listen.socktype = ai->ai_socktype;
1024 req.data.listen.protocol = ai->ai_protocol;
1025 req.data.listen.addr = ai->ai_addr;
1026 req.data.listen.addrlen = ai->ai_addrlen;
1027 req.data.listen.portal_id = portal_id;
1028
1029 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
1030 log_err(1, "error issuing CTL_ISCSI ioctl");
1031
1032 if (req.status != CTL_ISCSI_OK) {
1033 log_errx(1, "error returned from CTL iSCSI listen: %s",
1034 req.error_str);
1035 }
1036}
1037
1038void
1039kernel_accept(int *connection_id, int *portal_id,
1040 struct sockaddr *client_sa, socklen_t *client_salen)
1041{
1042 struct ctl_iscsi req;
1043 struct sockaddr_storage ss;
1044
1045 bzero(&req, sizeof(req));
1046
1047 req.type = CTL_ISCSI_ACCEPT;
1048 req.data.accept.initiator_addr = (struct sockaddr *)&ss;
1049
1050 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
1051 log_err(1, "error issuing CTL_ISCSI ioctl");
1052
1053 if (req.status != CTL_ISCSI_OK) {
1054 log_errx(1, "error returned from CTL iSCSI accept: %s",
1055 req.error_str);
1056 }
1057
1058 *connection_id = req.data.accept.connection_id;
1059 *portal_id = req.data.accept.portal_id;
1060 *client_salen = req.data.accept.initiator_addrlen;
1061 memcpy(client_sa, &ss, *client_salen);
1062}
1063
1064void
1065kernel_send(struct pdu *pdu)
1066{
1067 struct ctl_iscsi req;
1068
1069 bzero(&req, sizeof(req));
1070
1071 req.type = CTL_ISCSI_SEND;
1072 req.data.send.connection_id = pdu->pdu_connection->conn_socket;
1073 req.data.send.bhs = pdu->pdu_bhs;
1074 req.data.send.data_segment_len = pdu->pdu_data_len;
1075 req.data.send.data_segment = pdu->pdu_data;
1076
1077 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1078 log_err(1, "error issuing CTL_ISCSI ioctl; "
1079 "dropping connection");
1080 }
1081
1082 if (req.status != CTL_ISCSI_OK) {
1083 log_errx(1, "error returned from CTL iSCSI send: "
1084 "%s; dropping connection", req.error_str);
1085 }
1086}
1087
1088void
1089kernel_receive(struct pdu *pdu)
1090{
1091 struct ctl_iscsi req;
1092
1093 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH);
1094 if (pdu->pdu_data == NULL)
1095 log_err(1, "malloc");
1096
1097 bzero(&req, sizeof(req));
1098
1099 req.type = CTL_ISCSI_RECEIVE;
1100 req.data.receive.connection_id = pdu->pdu_connection->conn_socket;
1101 req.data.receive.bhs = pdu->pdu_bhs;
1102 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH;
1103 req.data.receive.data_segment = pdu->pdu_data;
1104
1105 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1106 log_err(1, "error issuing CTL_ISCSI ioctl; "
1107 "dropping connection");
1108 }
1109
1110 if (req.status != CTL_ISCSI_OK) {
1111 log_errx(1, "error returned from CTL iSCSI receive: "
1112 "%s; dropping connection", req.error_str);
1113 }
1114
1115}
1116
1117#endif /* ICL_KERNEL_PROXY */
1118
1119/*
1120 * XXX: I CANT INTO LATIN
1121 */
1122void
1123kernel_capsicate(void)
1124{
1125 int error;
1126 cap_rights_t rights;
1127 const unsigned long cmds[] = { CTL_ISCSI };
1128
1129 cap_rights_init(&rights, CAP_IOCTL);
1130 error = cap_rights_limit(ctl_fd, &rights);
1131 if (error != 0 && errno != ENOSYS)
1132 log_err(1, "cap_rights_limit");
1133
1134 error = cap_ioctls_limit(ctl_fd, cmds,
1135 sizeof(cmds) / sizeof(cmds[0]));
1136 if (error != 0 && errno != ENOSYS)
1137 log_err(1, "cap_ioctls_limit");
1138
1139 error = cap_enter();
1140 if (error != 0 && errno != ENOSYS)
1141 log_err(1, "cap_enter");
1142
1143 if (cap_sandboxed())
1144 log_debugx("Capsicum capability mode enabled");
1145 else
1146 log_warnx("Capsicum capability mode not supported");
1147}
1148
2 * Copyright (c) 2003, 2004 Silicon Graphics International Corp.
3 * Copyright (c) 1997-2007 Kenneth D. Merry
4 * Copyright (c) 2012 The FreeBSD Foundation
5 * All rights reserved.
6 *
7 * Portions of this software were developed by Edward Tomasz Napierala
8 * under sponsorship from the FreeBSD Foundation.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions, and the following disclaimer,
15 * without modification.
16 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
17 * substantially similar to the "NO WARRANTY" disclaimer below
18 * ("Disclaimer") and any redistribution must be conditioned upon
19 * including a substantially similar Disclaimer requirement for further
20 * binary redistribution.
21 *
22 * NO WARRANTY
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGES.
34 *
35 */
36
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD: stable/10/usr.sbin/ctld/kernel.c 279055 2015-02-20 17:09:49Z mav $");
39
40#include <sys/ioctl.h>
41#include <sys/types.h>
42#include <sys/stat.h>
43#include <sys/param.h>
44#include <sys/linker.h>
45#include <sys/queue.h>
46#include <sys/callout.h>
47#include <sys/sbuf.h>
48#include <sys/capability.h>
49#include <assert.h>
50#include <bsdxml.h>
51#include <ctype.h>
52#include <errno.h>
53#include <fcntl.h>
54#include <stdint.h>
55#include <stdio.h>
56#include <stdlib.h>
57#include <string.h>
58#include <strings.h>
59#include <cam/scsi/scsi_all.h>
60#include <cam/scsi/scsi_message.h>
61#include <cam/ctl/ctl.h>
62#include <cam/ctl/ctl_io.h>
63#include <cam/ctl/ctl_frontend_internal.h>
64#include <cam/ctl/ctl_backend.h>
65#include <cam/ctl/ctl_ioctl.h>
66#include <cam/ctl/ctl_backend_block.h>
67#include <cam/ctl/ctl_util.h>
68#include <cam/ctl/ctl_scsi_all.h>
69
70#include "ctld.h"
71
72#ifdef ICL_KERNEL_PROXY
73#include <netdb.h>
74#endif
75
76extern bool proxy_mode;
77
78static int ctl_fd = 0;
79
80void
81kernel_init(void)
82{
83 int retval, saved_errno;
84
85 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR);
86 if (ctl_fd < 0 && errno == ENOENT) {
87 saved_errno = errno;
88 retval = kldload("ctl");
89 if (retval != -1)
90 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR);
91 else
92 errno = saved_errno;
93 }
94 if (ctl_fd < 0)
95 log_err(1, "failed to open %s", CTL_DEFAULT_DEV);
96}
97
98/*
99 * Name/value pair used for per-LUN attributes.
100 */
101struct cctl_lun_nv {
102 char *name;
103 char *value;
104 STAILQ_ENTRY(cctl_lun_nv) links;
105};
106
107/*
108 * Backend LUN information.
109 */
110struct cctl_lun {
111 uint64_t lun_id;
112 char *backend_type;
113 uint64_t size_blocks;
114 uint32_t blocksize;
115 char *serial_number;
116 char *device_id;
117 char *ctld_name;
118 STAILQ_HEAD(,cctl_lun_nv) attr_list;
119 STAILQ_ENTRY(cctl_lun) links;
120};
121
122struct cctl_port {
123 uint32_t port_id;
124 char *port_name;
125 int cfiscsi_state;
126 char *cfiscsi_target;
127 uint16_t cfiscsi_portal_group_tag;
128 char *ctld_portal_group_name;
129 STAILQ_HEAD(,cctl_lun_nv) attr_list;
130 STAILQ_ENTRY(cctl_port) links;
131};
132
133struct cctl_devlist_data {
134 int num_luns;
135 STAILQ_HEAD(,cctl_lun) lun_list;
136 struct cctl_lun *cur_lun;
137 int num_ports;
138 STAILQ_HEAD(,cctl_port) port_list;
139 struct cctl_port *cur_port;
140 int level;
141 struct sbuf *cur_sb[32];
142};
143
144static void
145cctl_start_element(void *user_data, const char *name, const char **attr)
146{
147 int i;
148 struct cctl_devlist_data *devlist;
149 struct cctl_lun *cur_lun;
150
151 devlist = (struct cctl_devlist_data *)user_data;
152 cur_lun = devlist->cur_lun;
153 devlist->level++;
154 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
155 sizeof(devlist->cur_sb[0])))
156 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
157 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
158
159 devlist->cur_sb[devlist->level] = sbuf_new_auto();
160 if (devlist->cur_sb[devlist->level] == NULL)
161 log_err(1, "%s: unable to allocate sbuf", __func__);
162
163 if (strcmp(name, "lun") == 0) {
164 if (cur_lun != NULL)
165 log_errx(1, "%s: improper lun element nesting",
166 __func__);
167
168 cur_lun = calloc(1, sizeof(*cur_lun));
169 if (cur_lun == NULL)
170 log_err(1, "%s: cannot allocate %zd bytes", __func__,
171 sizeof(*cur_lun));
172
173 devlist->num_luns++;
174 devlist->cur_lun = cur_lun;
175
176 STAILQ_INIT(&cur_lun->attr_list);
177 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links);
178
179 for (i = 0; attr[i] != NULL; i += 2) {
180 if (strcmp(attr[i], "id") == 0) {
181 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0);
182 } else {
183 log_errx(1, "%s: invalid LUN attribute %s = %s",
184 __func__, attr[i], attr[i+1]);
185 }
186 }
187 }
188}
189
190static void
191cctl_end_element(void *user_data, const char *name)
192{
193 struct cctl_devlist_data *devlist;
194 struct cctl_lun *cur_lun;
195 char *str;
196
197 devlist = (struct cctl_devlist_data *)user_data;
198 cur_lun = devlist->cur_lun;
199
200 if ((cur_lun == NULL)
201 && (strcmp(name, "ctllunlist") != 0))
202 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name);
203
204 if (devlist->cur_sb[devlist->level] == NULL)
205 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
206 devlist->level, name);
207
208 sbuf_finish(devlist->cur_sb[devlist->level]);
209 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
210
211 if (strlen(str) == 0) {
212 free(str);
213 str = NULL;
214 }
215
216 sbuf_delete(devlist->cur_sb[devlist->level]);
217 devlist->cur_sb[devlist->level] = NULL;
218 devlist->level--;
219
220 if (strcmp(name, "backend_type") == 0) {
221 cur_lun->backend_type = str;
222 str = NULL;
223 } else if (strcmp(name, "size") == 0) {
224 cur_lun->size_blocks = strtoull(str, NULL, 0);
225 } else if (strcmp(name, "blocksize") == 0) {
226 cur_lun->blocksize = strtoul(str, NULL, 0);
227 } else if (strcmp(name, "serial_number") == 0) {
228 cur_lun->serial_number = str;
229 str = NULL;
230 } else if (strcmp(name, "device_id") == 0) {
231 cur_lun->device_id = str;
232 str = NULL;
233 } else if (strcmp(name, "ctld_name") == 0) {
234 cur_lun->ctld_name = str;
235 str = NULL;
236 } else if (strcmp(name, "lun") == 0) {
237 devlist->cur_lun = NULL;
238 } else if (strcmp(name, "ctllunlist") == 0) {
239 /* Nothing. */
240 } else {
241 struct cctl_lun_nv *nv;
242
243 nv = calloc(1, sizeof(*nv));
244 if (nv == NULL)
245 log_err(1, "%s: can't allocate %zd bytes for nv pair",
246 __func__, sizeof(*nv));
247
248 nv->name = checked_strdup(name);
249
250 nv->value = str;
251 str = NULL;
252 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links);
253 }
254
255 free(str);
256}
257
258static void
259cctl_start_pelement(void *user_data, const char *name, const char **attr)
260{
261 int i;
262 struct cctl_devlist_data *devlist;
263 struct cctl_port *cur_port;
264
265 devlist = (struct cctl_devlist_data *)user_data;
266 cur_port = devlist->cur_port;
267 devlist->level++;
268 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
269 sizeof(devlist->cur_sb[0])))
270 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
271 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
272
273 devlist->cur_sb[devlist->level] = sbuf_new_auto();
274 if (devlist->cur_sb[devlist->level] == NULL)
275 log_err(1, "%s: unable to allocate sbuf", __func__);
276
277 if (strcmp(name, "targ_port") == 0) {
278 if (cur_port != NULL)
279 log_errx(1, "%s: improper port element nesting (%s)",
280 __func__, name);
281
282 cur_port = calloc(1, sizeof(*cur_port));
283 if (cur_port == NULL)
284 log_err(1, "%s: cannot allocate %zd bytes", __func__,
285 sizeof(*cur_port));
286
287 devlist->num_ports++;
288 devlist->cur_port = cur_port;
289
290 STAILQ_INIT(&cur_port->attr_list);
291 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links);
292
293 for (i = 0; attr[i] != NULL; i += 2) {
294 if (strcmp(attr[i], "id") == 0) {
295 cur_port->port_id = strtoul(attr[i+1], NULL, 0);
296 } else {
297 log_errx(1, "%s: invalid LUN attribute %s = %s",
298 __func__, attr[i], attr[i+1]);
299 }
300 }
301 }
302}
303
304static void
305cctl_end_pelement(void *user_data, const char *name)
306{
307 struct cctl_devlist_data *devlist;
308 struct cctl_port *cur_port;
309 char *str;
310
311 devlist = (struct cctl_devlist_data *)user_data;
312 cur_port = devlist->cur_port;
313
314 if ((cur_port == NULL)
315 && (strcmp(name, "ctlportlist") != 0))
316 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name);
317
318 if (devlist->cur_sb[devlist->level] == NULL)
319 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
320 devlist->level, name);
321
322 sbuf_finish(devlist->cur_sb[devlist->level]);
323 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
324
325 if (strlen(str) == 0) {
326 free(str);
327 str = NULL;
328 }
329
330 sbuf_delete(devlist->cur_sb[devlist->level]);
331 devlist->cur_sb[devlist->level] = NULL;
332 devlist->level--;
333
334 if (strcmp(name, "port_name") == 0) {
335 cur_port->port_name = str;
336 str = NULL;
337 } else if (strcmp(name, "cfiscsi_target") == 0) {
338 cur_port->cfiscsi_target = str;
339 str = NULL;
340 } else if (strcmp(name, "cfiscsi_state") == 0) {
341 cur_port->cfiscsi_state = strtoul(str, NULL, 0);
342 } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) {
343 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0);
344 } else if (strcmp(name, "ctld_portal_group_name") == 0) {
345 cur_port->ctld_portal_group_name = str;
346 str = NULL;
347 } else if (strcmp(name, "targ_port") == 0) {
348 devlist->cur_port = NULL;
349 } else if (strcmp(name, "ctlportlist") == 0) {
350 /* Nothing. */
351 } else {
352 struct cctl_lun_nv *nv;
353
354 nv = calloc(1, sizeof(*nv));
355 if (nv == NULL)
356 log_err(1, "%s: can't allocate %zd bytes for nv pair",
357 __func__, sizeof(*nv));
358
359 nv->name = checked_strdup(name);
360
361 nv->value = str;
362 str = NULL;
363 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links);
364 }
365
366 free(str);
367}
368
369static void
370cctl_char_handler(void *user_data, const XML_Char *str, int len)
371{
372 struct cctl_devlist_data *devlist;
373
374 devlist = (struct cctl_devlist_data *)user_data;
375
376 sbuf_bcat(devlist->cur_sb[devlist->level], str, len);
377}
378
379struct conf *
380conf_new_from_kernel(void)
381{
382 struct conf *conf = NULL;
383 struct target *targ;
384 struct portal_group *pg;
385 struct pport *pp;
386 struct port *cp;
387 struct lun *cl;
388 struct lun_option *lo;
389 struct ctl_lun_list list;
390 struct cctl_devlist_data devlist;
391 struct cctl_lun *lun;
392 struct cctl_port *port;
393 XML_Parser parser;
394 char *str;
395 int len, retval;
396
397 bzero(&devlist, sizeof(devlist));
398 STAILQ_INIT(&devlist.lun_list);
399 STAILQ_INIT(&devlist.port_list);
400
401 log_debugx("obtaining previously configured CTL luns from the kernel");
402
403 str = NULL;
404 len = 4096;
405retry:
406 str = realloc(str, len);
407 if (str == NULL)
408 log_err(1, "realloc");
409
410 bzero(&list, sizeof(list));
411 list.alloc_len = len;
412 list.status = CTL_LUN_LIST_NONE;
413 list.lun_xml = str;
414
415 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) {
416 log_warn("error issuing CTL_LUN_LIST ioctl");
417 free(str);
418 return (NULL);
419 }
420
421 if (list.status == CTL_LUN_LIST_ERROR) {
422 log_warnx("error returned from CTL_LUN_LIST ioctl: %s",
423 list.error_str);
424 free(str);
425 return (NULL);
426 }
427
428 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
429 len = len << 1;
430 goto retry;
431 }
432
433 parser = XML_ParserCreate(NULL);
434 if (parser == NULL) {
435 log_warnx("unable to create XML parser");
436 free(str);
437 return (NULL);
438 }
439
440 XML_SetUserData(parser, &devlist);
441 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element);
442 XML_SetCharacterDataHandler(parser, cctl_char_handler);
443
444 retval = XML_Parse(parser, str, strlen(str), 1);
445 XML_ParserFree(parser);
446 free(str);
447 if (retval != 1) {
448 log_warnx("XML_Parse failed");
449 return (NULL);
450 }
451
452 str = NULL;
453 len = 4096;
454retry_port:
455 str = realloc(str, len);
456 if (str == NULL)
457 log_err(1, "realloc");
458
459 bzero(&list, sizeof(list));
460 list.alloc_len = len;
461 list.status = CTL_LUN_LIST_NONE;
462 list.lun_xml = str;
463
464 if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) {
465 log_warn("error issuing CTL_PORT_LIST ioctl");
466 free(str);
467 return (NULL);
468 }
469
470 if (list.status == CTL_PORT_LIST_ERROR) {
471 log_warnx("error returned from CTL_PORT_LIST ioctl: %s",
472 list.error_str);
473 free(str);
474 return (NULL);
475 }
476
477 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
478 len = len << 1;
479 goto retry_port;
480 }
481
482 parser = XML_ParserCreate(NULL);
483 if (parser == NULL) {
484 log_warnx("unable to create XML parser");
485 free(str);
486 return (NULL);
487 }
488
489 XML_SetUserData(parser, &devlist);
490 XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement);
491 XML_SetCharacterDataHandler(parser, cctl_char_handler);
492
493 retval = XML_Parse(parser, str, strlen(str), 1);
494 XML_ParserFree(parser);
495 free(str);
496 if (retval != 1) {
497 log_warnx("XML_Parse failed");
498 return (NULL);
499 }
500
501 conf = conf_new();
502
503 STAILQ_FOREACH(port, &devlist.port_list, links) {
504
505 if (port->cfiscsi_target == NULL) {
506 log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ",
507 port->port_id, port->port_name);
508 pp = pport_find(conf, port->port_name);
509 if (pp == NULL) {
510#if 0
511 log_debugx("found new kernel port %u \"%s\"",
512 port->port_id, port->port_name);
513#endif
514 pp = pport_new(conf, port->port_name, port->port_id);
515 if (pp == NULL) {
516 log_warnx("pport_new failed");
517 continue;
518 }
519 }
520 continue;
521 }
522 if (port->cfiscsi_state != 1) {
523 log_debugx("CTL port %ju is not active (%d); ignoring",
524 (uintmax_t)port->port_id, port->cfiscsi_state);
525 continue;
526 }
527
528 targ = target_find(conf, port->cfiscsi_target);
529 if (targ == NULL) {
530#if 0
531 log_debugx("found new kernel target %s for CTL port %ld",
532 port->cfiscsi_target, port->port_id);
533#endif
534 targ = target_new(conf, port->cfiscsi_target);
535 if (targ == NULL) {
536 log_warnx("target_new failed");
537 continue;
538 }
539 }
540
541 if (port->ctld_portal_group_name == NULL)
542 continue;
543 pg = portal_group_find(conf, port->ctld_portal_group_name);
544 if (pg == NULL) {
545#if 0
546 log_debugx("found new kernel portal group %s for CTL port %ld",
547 port->ctld_portal_group_name, port->port_id);
548#endif
549 pg = portal_group_new(conf, port->ctld_portal_group_name);
550 if (pg == NULL) {
551 log_warnx("portal_group_new failed");
552 continue;
553 }
554 }
555 pg->pg_tag = port->cfiscsi_portal_group_tag;
556 cp = port_new(conf, targ, pg);
557 if (cp == NULL) {
558 log_warnx("port_new failed");
559 continue;
560 }
561 cp->p_ctl_port = port->port_id;
562 }
563
564 STAILQ_FOREACH(lun, &devlist.lun_list, links) {
565 struct cctl_lun_nv *nv;
566
567 if (lun->ctld_name == NULL) {
568 log_debugx("CTL lun %ju wasn't managed by ctld; "
569 "ignoring", (uintmax_t)lun->lun_id);
570 continue;
571 }
572
573 cl = lun_find(conf, lun->ctld_name);
574 if (cl != NULL) {
575 log_warnx("found CTL lun %ju \"%s\", "
576 "also backed by CTL lun %d; ignoring",
577 (uintmax_t)lun->lun_id, lun->ctld_name,
578 cl->l_ctl_lun);
579 continue;
580 }
581
582 log_debugx("found CTL lun %ju \"%s\"",
583 (uintmax_t)lun->lun_id, lun->ctld_name);
584
585 cl = lun_new(conf, lun->ctld_name);
586 if (cl == NULL) {
587 log_warnx("lun_new failed");
588 continue;
589 }
590 lun_set_backend(cl, lun->backend_type);
591 lun_set_blocksize(cl, lun->blocksize);
592 lun_set_device_id(cl, lun->device_id);
593 lun_set_serial(cl, lun->serial_number);
594 lun_set_size(cl, lun->size_blocks * cl->l_blocksize);
595 lun_set_ctl_lun(cl, lun->lun_id);
596
597 STAILQ_FOREACH(nv, &lun->attr_list, links) {
598 if (strcmp(nv->name, "file") == 0 ||
599 strcmp(nv->name, "dev") == 0) {
600 lun_set_path(cl, nv->value);
601 continue;
602 }
603 lo = lun_option_new(cl, nv->name, nv->value);
604 if (lo == NULL)
605 log_warnx("unable to add CTL lun option %s "
606 "for CTL lun %ju \"%s\"",
607 nv->name, (uintmax_t) lun->lun_id,
608 cl->l_name);
609 }
610 }
611
612 return (conf);
613}
614
615static void
616str_arg(struct ctl_be_arg *arg, const char *name, const char *value)
617{
618
619 arg->namelen = strlen(name) + 1;
620 arg->name = __DECONST(char *, name);
621 arg->vallen = strlen(value) + 1;
622 arg->value = __DECONST(char *, value);
623 arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD;
624}
625
626int
627kernel_lun_add(struct lun *lun)
628{
629 struct lun_option *lo;
630 struct ctl_lun_req req;
631 int error, i, num_options;
632
633 bzero(&req, sizeof(req));
634
635 strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
636 req.reqtype = CTL_LUNREQ_CREATE;
637
638 req.reqdata.create.blocksize_bytes = lun->l_blocksize;
639
640 if (lun->l_size != 0)
641 req.reqdata.create.lun_size_bytes = lun->l_size;
642
643 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE;
644 req.reqdata.create.device_type = T_DIRECT;
645
646 if (lun->l_serial != NULL) {
647 strncpy(req.reqdata.create.serial_num, lun->l_serial,
648 sizeof(req.reqdata.create.serial_num));
649 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM;
650 }
651
652 if (lun->l_device_id != NULL) {
653 strncpy(req.reqdata.create.device_id, lun->l_device_id,
654 sizeof(req.reqdata.create.device_id));
655 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID;
656 }
657
658 if (lun->l_path != NULL) {
659 lo = lun_option_find(lun, "file");
660 if (lo != NULL) {
661 lun_option_set(lo, lun->l_path);
662 } else {
663 lo = lun_option_new(lun, "file", lun->l_path);
664 assert(lo != NULL);
665 }
666 }
667
668 lo = lun_option_find(lun, "ctld_name");
669 if (lo != NULL) {
670 lun_option_set(lo, lun->l_name);
671 } else {
672 lo = lun_option_new(lun, "ctld_name", lun->l_name);
673 assert(lo != NULL);
674 }
675
676 lo = lun_option_find(lun, "scsiname");
677 if (lo == NULL && lun->l_scsiname != NULL) {
678 lo = lun_option_new(lun, "scsiname", lun->l_scsiname);
679 assert(lo != NULL);
680 }
681
682 num_options = 0;
683 TAILQ_FOREACH(lo, &lun->l_options, lo_next)
684 num_options++;
685
686 req.num_be_args = num_options;
687 if (num_options > 0) {
688 req.be_args = malloc(num_options * sizeof(*req.be_args));
689 if (req.be_args == NULL) {
690 log_warn("error allocating %zd bytes",
691 num_options * sizeof(*req.be_args));
692 return (1);
693 }
694
695 i = 0;
696 TAILQ_FOREACH(lo, &lun->l_options, lo_next) {
697 str_arg(&req.be_args[i], lo->lo_name, lo->lo_value);
698 i++;
699 }
700 assert(i == num_options);
701 }
702
703 error = ioctl(ctl_fd, CTL_LUN_REQ, &req);
704 free(req.be_args);
705 if (error != 0) {
706 log_warn("error issuing CTL_LUN_REQ ioctl");
707 return (1);
708 }
709
710 switch (req.status) {
711 case CTL_LUN_ERROR:
712 log_warnx("LUN creation error: %s", req.error_str);
713 return (1);
714 case CTL_LUN_WARNING:
715 log_warnx("LUN creation warning: %s", req.error_str);
716 break;
717 case CTL_LUN_OK:
718 break;
719 default:
720 log_warnx("unknown LUN creation status: %d",
721 req.status);
722 return (1);
723 }
724
725 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id);
726 return (0);
727}
728
729int
730kernel_lun_resize(struct lun *lun)
731{
732 struct ctl_lun_req req;
733
734 bzero(&req, sizeof(req));
735
736 strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
737 req.reqtype = CTL_LUNREQ_MODIFY;
738
739 req.reqdata.modify.lun_id = lun->l_ctl_lun;
740 req.reqdata.modify.lun_size_bytes = lun->l_size;
741
742 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) {
743 log_warn("error issuing CTL_LUN_REQ ioctl");
744 return (1);
745 }
746
747 switch (req.status) {
748 case CTL_LUN_ERROR:
749 log_warnx("LUN modification error: %s", req.error_str);
750 return (1);
751 case CTL_LUN_WARNING:
752 log_warnx("LUN modification warning: %s", req.error_str);
753 break;
754 case CTL_LUN_OK:
755 break;
756 default:
757 log_warnx("unknown LUN modification status: %d",
758 req.status);
759 return (1);
760 }
761
762 return (0);
763}
764
765int
766kernel_lun_remove(struct lun *lun)
767{
768 struct ctl_lun_req req;
769
770 bzero(&req, sizeof(req));
771
772 strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
773 req.reqtype = CTL_LUNREQ_RM;
774
775 req.reqdata.rm.lun_id = lun->l_ctl_lun;
776
777 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) {
778 log_warn("error issuing CTL_LUN_REQ ioctl");
779 return (1);
780 }
781
782 switch (req.status) {
783 case CTL_LUN_ERROR:
784 log_warnx("LUN removal error: %s", req.error_str);
785 return (1);
786 case CTL_LUN_WARNING:
787 log_warnx("LUN removal warning: %s", req.error_str);
788 break;
789 case CTL_LUN_OK:
790 break;
791 default:
792 log_warnx("unknown LUN removal status: %d", req.status);
793 return (1);
794 }
795
796 return (0);
797}
798
799void
800kernel_handoff(struct connection *conn)
801{
802 struct ctl_iscsi req;
803
804 bzero(&req, sizeof(req));
805
806 req.type = CTL_ISCSI_HANDOFF;
807 strlcpy(req.data.handoff.initiator_name,
808 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name));
809 strlcpy(req.data.handoff.initiator_addr,
810 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr));
811 if (conn->conn_initiator_alias != NULL) {
812 strlcpy(req.data.handoff.initiator_alias,
813 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias));
814 }
815 memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid,
816 sizeof(req.data.handoff.initiator_isid));
817 strlcpy(req.data.handoff.target_name,
818 conn->conn_target->t_name, sizeof(req.data.handoff.target_name));
819#ifdef ICL_KERNEL_PROXY
820 if (proxy_mode)
821 req.data.handoff.connection_id = conn->conn_socket;
822 else
823 req.data.handoff.socket = conn->conn_socket;
824#else
825 req.data.handoff.socket = conn->conn_socket;
826#endif
827 req.data.handoff.portal_group_tag =
828 conn->conn_portal->p_portal_group->pg_tag;
829 if (conn->conn_header_digest == CONN_DIGEST_CRC32C)
830 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C;
831 if (conn->conn_data_digest == CONN_DIGEST_CRC32C)
832 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C;
833 req.data.handoff.cmdsn = conn->conn_cmdsn;
834 req.data.handoff.statsn = conn->conn_statsn;
835 req.data.handoff.max_recv_data_segment_length =
836 conn->conn_max_data_segment_length;
837 req.data.handoff.max_burst_length = conn->conn_max_burst_length;
838 req.data.handoff.immediate_data = conn->conn_immediate_data;
839
840 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
841 log_err(1, "error issuing CTL_ISCSI ioctl; "
842 "dropping connection");
843 }
844
845 if (req.status != CTL_ISCSI_OK) {
846 log_errx(1, "error returned from CTL iSCSI handoff request: "
847 "%s; dropping connection", req.error_str);
848 }
849}
850
851int
852kernel_port_add(struct port *port)
853{
854 struct ctl_port_entry entry;
855 struct ctl_req req;
856 struct ctl_lun_map lm;
857 struct target *targ = port->p_target;
858 struct portal_group *pg = port->p_portal_group;
859 char tagstr[16];
860 int error, i, n;
861
862 /* Create iSCSI port. */
863 if (port->p_portal_group) {
864 bzero(&req, sizeof(req));
865 strlcpy(req.driver, "iscsi", sizeof(req.driver));
866 req.reqtype = CTL_REQ_CREATE;
867 req.args = malloc(req.num_args * sizeof(*req.args));
868 n = 0;
869 req.args[n].namelen = sizeof("port_id");
870 req.args[n].name = __DECONST(char *, "port_id");
871 req.args[n].vallen = sizeof(port->p_ctl_port);
872 req.args[n].value = &port->p_ctl_port;
873 req.args[n++].flags = CTL_BEARG_WR;
874 str_arg(&req.args[n++], "cfiscsi_target", targ->t_name);
875 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag);
876 str_arg(&req.args[n++], "cfiscsi_portal_group_tag", tagstr);
877 if (targ->t_alias)
878 str_arg(&req.args[n++], "cfiscsi_target_alias", targ->t_alias);
879 str_arg(&req.args[n++], "ctld_portal_group_name", pg->pg_name);
880 req.num_args = n;
881 error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
882 free(req.args);
883 if (error != 0) {
884 log_warn("error issuing CTL_PORT_REQ ioctl");
885 return (1);
886 }
887 if (req.status == CTL_LUN_ERROR) {
888 log_warnx("error returned from port creation request: %s",
889 req.error_str);
890 return (1);
891 }
892 if (req.status != CTL_LUN_OK) {
893 log_warnx("unknown port creation request status %d",
894 req.status);
895 return (1);
896 }
897 } else if (port->p_pport)
898 port->p_ctl_port = port->p_pport->pp_ctl_port;
899
900 /* Explicitly enable mapping to block any access except allowed. */
901 lm.port = port->p_ctl_port;
902 lm.plun = UINT32_MAX;
903 lm.lun = 0;
904 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
905 if (error != 0)
906 log_warn("CTL_LUN_MAP ioctl failed");
907
908 /* Map configured LUNs */
909 for (i = 0; i < MAX_LUNS; i++) {
910 if (targ->t_luns[i] == NULL)
911 continue;
912 lm.port = port->p_ctl_port;
913 lm.plun = i;
914 lm.lun = targ->t_luns[i]->l_ctl_lun;
915 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
916 if (error != 0)
917 log_warn("CTL_LUN_MAP ioctl failed");
918 }
919
920 /* Enable port */
921 bzero(&entry, sizeof(entry));
922 entry.targ_port = port->p_ctl_port;
923 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry);
924 if (error != 0) {
925 log_warn("CTL_ENABLE_PORT ioctl failed");
926 return (-1);
927 }
928
929 return (0);
930}
931
932int
933kernel_port_update(struct port *port)
934{
935 struct ctl_lun_map lm;
936 struct target *targ = port->p_target;
937 int error, i;
938
939 /* Map configured LUNs and unmap others */
940 for (i = 0; i < MAX_LUNS; i++) {
941 lm.port = port->p_ctl_port;
942 lm.plun = i;
943 if (targ->t_luns[i] == NULL)
944 lm.lun = UINT32_MAX;
945 else
946 lm.lun = targ->t_luns[i]->l_ctl_lun;
947 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
948 if (error != 0)
949 log_warn("CTL_LUN_MAP ioctl failed");
950 }
951 return (0);
952}
953
954int
955kernel_port_remove(struct port *port)
956{
957 struct ctl_port_entry entry;
958 struct ctl_lun_map lm;
959 struct ctl_req req;
960 char tagstr[16];
961 struct target *targ = port->p_target;
962 struct portal_group *pg = port->p_portal_group;
963 int error;
964
965 /* Disable port */
966 bzero(&entry, sizeof(entry));
967 entry.targ_port = port->p_ctl_port;
968 error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry);
969 if (error != 0) {
970 log_warn("CTL_DISABLE_PORT ioctl failed");
971 return (-1);
972 }
973
974 /* Remove iSCSI port. */
975 if (port->p_portal_group) {
976 bzero(&req, sizeof(req));
977 strlcpy(req.driver, "iscsi", sizeof(req.driver));
978 req.reqtype = CTL_REQ_REMOVE;
979 req.num_args = 2;
980 req.args = malloc(req.num_args * sizeof(*req.args));
981 str_arg(&req.args[0], "cfiscsi_target", targ->t_name);
982 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag);
983 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr);
984 error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
985 free(req.args);
986 if (error != 0) {
987 log_warn("error issuing CTL_PORT_REQ ioctl");
988 return (1);
989 }
990 if (req.status == CTL_LUN_ERROR) {
991 log_warnx("error returned from port removal request: %s",
992 req.error_str);
993 return (1);
994 }
995 if (req.status != CTL_LUN_OK) {
996 log_warnx("unknown port removal request status %d",
997 req.status);
998 return (1);
999 }
1000 } else {
1001 /* Disable LUN mapping. */
1002 lm.port = port->p_ctl_port;
1003 lm.plun = UINT32_MAX;
1004 lm.lun = UINT32_MAX;
1005 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1006 if (error != 0)
1007 log_warn("CTL_LUN_MAP ioctl failed");
1008 }
1009 return (0);
1010}
1011
1012#ifdef ICL_KERNEL_PROXY
1013void
1014kernel_listen(struct addrinfo *ai, bool iser, int portal_id)
1015{
1016 struct ctl_iscsi req;
1017
1018 bzero(&req, sizeof(req));
1019
1020 req.type = CTL_ISCSI_LISTEN;
1021 req.data.listen.iser = iser;
1022 req.data.listen.domain = ai->ai_family;
1023 req.data.listen.socktype = ai->ai_socktype;
1024 req.data.listen.protocol = ai->ai_protocol;
1025 req.data.listen.addr = ai->ai_addr;
1026 req.data.listen.addrlen = ai->ai_addrlen;
1027 req.data.listen.portal_id = portal_id;
1028
1029 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
1030 log_err(1, "error issuing CTL_ISCSI ioctl");
1031
1032 if (req.status != CTL_ISCSI_OK) {
1033 log_errx(1, "error returned from CTL iSCSI listen: %s",
1034 req.error_str);
1035 }
1036}
1037
1038void
1039kernel_accept(int *connection_id, int *portal_id,
1040 struct sockaddr *client_sa, socklen_t *client_salen)
1041{
1042 struct ctl_iscsi req;
1043 struct sockaddr_storage ss;
1044
1045 bzero(&req, sizeof(req));
1046
1047 req.type = CTL_ISCSI_ACCEPT;
1048 req.data.accept.initiator_addr = (struct sockaddr *)&ss;
1049
1050 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
1051 log_err(1, "error issuing CTL_ISCSI ioctl");
1052
1053 if (req.status != CTL_ISCSI_OK) {
1054 log_errx(1, "error returned from CTL iSCSI accept: %s",
1055 req.error_str);
1056 }
1057
1058 *connection_id = req.data.accept.connection_id;
1059 *portal_id = req.data.accept.portal_id;
1060 *client_salen = req.data.accept.initiator_addrlen;
1061 memcpy(client_sa, &ss, *client_salen);
1062}
1063
1064void
1065kernel_send(struct pdu *pdu)
1066{
1067 struct ctl_iscsi req;
1068
1069 bzero(&req, sizeof(req));
1070
1071 req.type = CTL_ISCSI_SEND;
1072 req.data.send.connection_id = pdu->pdu_connection->conn_socket;
1073 req.data.send.bhs = pdu->pdu_bhs;
1074 req.data.send.data_segment_len = pdu->pdu_data_len;
1075 req.data.send.data_segment = pdu->pdu_data;
1076
1077 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1078 log_err(1, "error issuing CTL_ISCSI ioctl; "
1079 "dropping connection");
1080 }
1081
1082 if (req.status != CTL_ISCSI_OK) {
1083 log_errx(1, "error returned from CTL iSCSI send: "
1084 "%s; dropping connection", req.error_str);
1085 }
1086}
1087
1088void
1089kernel_receive(struct pdu *pdu)
1090{
1091 struct ctl_iscsi req;
1092
1093 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH);
1094 if (pdu->pdu_data == NULL)
1095 log_err(1, "malloc");
1096
1097 bzero(&req, sizeof(req));
1098
1099 req.type = CTL_ISCSI_RECEIVE;
1100 req.data.receive.connection_id = pdu->pdu_connection->conn_socket;
1101 req.data.receive.bhs = pdu->pdu_bhs;
1102 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH;
1103 req.data.receive.data_segment = pdu->pdu_data;
1104
1105 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1106 log_err(1, "error issuing CTL_ISCSI ioctl; "
1107 "dropping connection");
1108 }
1109
1110 if (req.status != CTL_ISCSI_OK) {
1111 log_errx(1, "error returned from CTL iSCSI receive: "
1112 "%s; dropping connection", req.error_str);
1113 }
1114
1115}
1116
1117#endif /* ICL_KERNEL_PROXY */
1118
1119/*
1120 * XXX: I CANT INTO LATIN
1121 */
1122void
1123kernel_capsicate(void)
1124{
1125 int error;
1126 cap_rights_t rights;
1127 const unsigned long cmds[] = { CTL_ISCSI };
1128
1129 cap_rights_init(&rights, CAP_IOCTL);
1130 error = cap_rights_limit(ctl_fd, &rights);
1131 if (error != 0 && errno != ENOSYS)
1132 log_err(1, "cap_rights_limit");
1133
1134 error = cap_ioctls_limit(ctl_fd, cmds,
1135 sizeof(cmds) / sizeof(cmds[0]));
1136 if (error != 0 && errno != ENOSYS)
1137 log_err(1, "cap_ioctls_limit");
1138
1139 error = cap_enter();
1140 if (error != 0 && errno != ENOSYS)
1141 log_err(1, "cap_enter");
1142
1143 if (cap_sandboxed())
1144 log_debugx("Capsicum capability mode enabled");
1145 else
1146 log_warnx("Capsicum capability mode not supported");
1147}
1148