1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2003, 2004 Silicon Graphics International Corp. 5 * Copyright (c) 1997-2007 Kenneth D. Merry 6 * Copyright (c) 2012 The FreeBSD Foundation 7 * Copyright (c) 2017 Jakub Wojciech Klama <jceel@FreeBSD.org> 8 * All rights reserved. 9 * 10 * Portions of this software were developed by Edward Tomasz Napierala 11 * under sponsorship from the FreeBSD Foundation. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions, and the following disclaimer, 18 * without modification. 19 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 20 * substantially similar to the "NO WARRANTY" disclaimer below 21 * ("Disclaimer") and any redistribution must be conditioned upon 22 * including a substantially similar Disclaimer requirement for further 23 * binary redistribution. 24 * 25 * NO WARRANTY 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 30 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 34 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 35 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGES. 37 * 38 */ 39 40 #include <sys/param.h> 41 #include <sys/capsicum.h> 42 #include <sys/callout.h> 43 #include <sys/cnv.h> 44 #include <sys/ioctl.h> 45 #include <sys/linker.h> 46 #include <sys/module.h> 47 #include <sys/queue.h> 48 #include <sys/sbuf.h> 49 #include <sys/nv.h> 50 #include <sys/stat.h> 51 #include <assert.h> 52 #include <bsdxml.h> 53 #include <capsicum_helpers.h> 54 #include <ctype.h> 55 #include <errno.h> 56 #include <fcntl.h> 57 #include <stdint.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <strings.h> 62 #include <cam/scsi/scsi_all.h> 63 #include <cam/scsi/scsi_message.h> 64 #include <cam/ctl/ctl.h> 65 #include <cam/ctl/ctl_io.h> 66 #include <cam/ctl/ctl_backend.h> 67 #include <cam/ctl/ctl_ioctl.h> 68 #include <cam/ctl/ctl_util.h> 69 #include <cam/ctl/ctl_scsi_all.h> 70 71 #include "ctld.hh" 72 73 #ifdef ICL_KERNEL_PROXY 74 #include <netdb.h> 75 #endif 76 77 #define NVLIST_BUFSIZE 1024 78 79 extern bool proxy_mode; 80 81 int ctl_fd = 0; 82 83 void 84 kernel_init(void) 85 { 86 int retval, saved_errno; 87 88 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 89 if (ctl_fd < 0 && errno == ENOENT) { 90 saved_errno = errno; 91 retval = kldload("ctl"); 92 if (retval != -1) 93 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 94 else 95 errno = saved_errno; 96 } 97 if (ctl_fd < 0) 98 log_err(1, "failed to open %s", CTL_DEFAULT_DEV); 99 #ifdef WANT_ISCSI 100 else { 101 saved_errno = errno; 102 if (modfind("cfiscsi") == -1 && kldload("cfiscsi") == -1) 103 log_warn("couldn't load cfiscsi"); 104 errno = saved_errno; 105 } 106 #endif 107 } 108 109 /* 110 * Backend LUN information. 111 */ 112 struct cctl_lun { 113 uint64_t lun_id; 114 char *backend_type; 115 uint8_t device_type; 116 uint64_t size_blocks; 117 uint32_t blocksize; 118 char *serial_number; 119 char *device_id; 120 char *ctld_name; 121 nvlist_t *attr_list; 122 STAILQ_ENTRY(cctl_lun) links; 123 }; 124 125 struct cctl_port { 126 uint32_t port_id; 127 char *port_frontend; 128 char *port_name; 129 int pp; 130 int vp; 131 int cfiscsi_state; 132 char *cfiscsi_target; 133 uint16_t cfiscsi_portal_group_tag; 134 char *ctld_portal_group_name; 135 nvlist_t *attr_list; 136 STAILQ_ENTRY(cctl_port) links; 137 }; 138 139 struct cctl_devlist_data { 140 int num_luns; 141 STAILQ_HEAD(,cctl_lun) lun_list; 142 struct cctl_lun *cur_lun; 143 int num_ports; 144 STAILQ_HEAD(,cctl_port) port_list; 145 struct cctl_port *cur_port; 146 int level; 147 struct sbuf *cur_sb[32]; 148 }; 149 150 static void 151 cctl_start_element(void *user_data, const char *name, const char **attr) 152 { 153 int i; 154 struct cctl_devlist_data *devlist; 155 struct cctl_lun *cur_lun; 156 157 devlist = (struct cctl_devlist_data *)user_data; 158 cur_lun = devlist->cur_lun; 159 devlist->level++; 160 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 161 sizeof(devlist->cur_sb[0]))) 162 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 163 nitems(devlist->cur_sb)); 164 165 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 166 if (devlist->cur_sb[devlist->level] == NULL) 167 log_err(1, "%s: unable to allocate sbuf", __func__); 168 169 if (strcmp(name, "lun") == 0) { 170 if (cur_lun != NULL) 171 log_errx(1, "%s: improper lun element nesting", 172 __func__); 173 174 cur_lun = reinterpret_cast<struct cctl_lun *>(calloc(1, sizeof(*cur_lun))); 175 if (cur_lun == NULL) 176 log_err(1, "%s: cannot allocate %zd bytes", __func__, 177 sizeof(*cur_lun)); 178 179 devlist->num_luns++; 180 devlist->cur_lun = cur_lun; 181 182 cur_lun->attr_list = nvlist_create(0); 183 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links); 184 185 for (i = 0; attr[i] != NULL; i += 2) { 186 if (strcmp(attr[i], "id") == 0) { 187 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0); 188 } else { 189 log_errx(1, "%s: invalid LUN attribute %s = %s", 190 __func__, attr[i], attr[i+1]); 191 } 192 } 193 } 194 } 195 196 static void 197 cctl_end_element(void *user_data, const char *name) 198 { 199 struct cctl_devlist_data *devlist; 200 struct cctl_lun *cur_lun; 201 char *str; 202 int error; 203 204 devlist = (struct cctl_devlist_data *)user_data; 205 cur_lun = devlist->cur_lun; 206 207 if ((cur_lun == NULL) 208 && (strcmp(name, "ctllunlist") != 0)) 209 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name); 210 211 if (devlist->cur_sb[devlist->level] == NULL) 212 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 213 devlist->level, name); 214 215 sbuf_finish(devlist->cur_sb[devlist->level]); 216 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 217 218 if (strlen(str) == 0) { 219 free(str); 220 str = NULL; 221 } 222 223 sbuf_delete(devlist->cur_sb[devlist->level]); 224 devlist->cur_sb[devlist->level] = NULL; 225 devlist->level--; 226 227 if (strcmp(name, "backend_type") == 0) { 228 cur_lun->backend_type = str; 229 str = NULL; 230 } else if (strcmp(name, "lun_type") == 0) { 231 if (str == NULL) 232 log_errx(1, "%s: %s missing its argument", __func__, name); 233 cur_lun->device_type = strtoull(str, NULL, 0); 234 } else if (strcmp(name, "size") == 0) { 235 if (str == NULL) 236 log_errx(1, "%s: %s missing its argument", __func__, name); 237 cur_lun->size_blocks = strtoull(str, NULL, 0); 238 } else if (strcmp(name, "blocksize") == 0) { 239 if (str == NULL) 240 log_errx(1, "%s: %s missing its argument", __func__, name); 241 cur_lun->blocksize = strtoul(str, NULL, 0); 242 } else if (strcmp(name, "serial_number") == 0) { 243 cur_lun->serial_number = str; 244 str = NULL; 245 } else if (strcmp(name, "device_id") == 0) { 246 cur_lun->device_id = str; 247 str = NULL; 248 } else if (strcmp(name, "ctld_name") == 0) { 249 cur_lun->ctld_name = str; 250 str = NULL; 251 } else if (strcmp(name, "lun") == 0) { 252 devlist->cur_lun = NULL; 253 } else if (strcmp(name, "ctllunlist") == 0) { 254 /* Nothing. */ 255 } else { 256 nvlist_move_string(cur_lun->attr_list, name, str); 257 error = nvlist_error(cur_lun->attr_list); 258 if (error != 0) 259 log_errc(1, error, "%s: failed to add nv pair for %s", 260 __func__, name); 261 str = NULL; 262 } 263 264 free(str); 265 } 266 267 static void 268 cctl_start_pelement(void *user_data, const char *name, const char **attr) 269 { 270 int i; 271 struct cctl_devlist_data *devlist; 272 struct cctl_port *cur_port; 273 274 devlist = (struct cctl_devlist_data *)user_data; 275 cur_port = devlist->cur_port; 276 devlist->level++; 277 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 278 sizeof(devlist->cur_sb[0]))) 279 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 280 nitems(devlist->cur_sb)); 281 282 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 283 if (devlist->cur_sb[devlist->level] == NULL) 284 log_err(1, "%s: unable to allocate sbuf", __func__); 285 286 if (strcmp(name, "targ_port") == 0) { 287 if (cur_port != NULL) 288 log_errx(1, "%s: improper port element nesting (%s)", 289 __func__, name); 290 291 cur_port = reinterpret_cast<struct cctl_port *>(calloc(1, sizeof(*cur_port))); 292 if (cur_port == NULL) 293 log_err(1, "%s: cannot allocate %zd bytes", __func__, 294 sizeof(*cur_port)); 295 296 devlist->num_ports++; 297 devlist->cur_port = cur_port; 298 299 cur_port->attr_list = nvlist_create(0); 300 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links); 301 302 for (i = 0; attr[i] != NULL; i += 2) { 303 if (strcmp(attr[i], "id") == 0) { 304 cur_port->port_id = strtoul(attr[i+1], NULL, 0); 305 } else { 306 log_errx(1, "%s: invalid LUN attribute %s = %s", 307 __func__, attr[i], attr[i+1]); 308 } 309 } 310 } 311 } 312 313 static void 314 cctl_end_pelement(void *user_data, const char *name) 315 { 316 struct cctl_devlist_data *devlist; 317 struct cctl_port *cur_port; 318 char *str; 319 int error; 320 321 devlist = (struct cctl_devlist_data *)user_data; 322 cur_port = devlist->cur_port; 323 324 if ((cur_port == NULL) 325 && (strcmp(name, "ctlportlist") != 0)) 326 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name); 327 328 if (devlist->cur_sb[devlist->level] == NULL) 329 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 330 devlist->level, name); 331 332 sbuf_finish(devlist->cur_sb[devlist->level]); 333 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 334 335 if (strlen(str) == 0) { 336 free(str); 337 str = NULL; 338 } 339 340 sbuf_delete(devlist->cur_sb[devlist->level]); 341 devlist->cur_sb[devlist->level] = NULL; 342 devlist->level--; 343 344 if (strcmp(name, "frontend_type") == 0) { 345 cur_port->port_frontend = str; 346 str = NULL; 347 } else if (strcmp(name, "port_name") == 0) { 348 cur_port->port_name = str; 349 str = NULL; 350 } else if (strcmp(name, "physical_port") == 0) { 351 if (str == NULL) 352 log_errx(1, "%s: %s missing its argument", __func__, name); 353 cur_port->pp = strtoul(str, NULL, 0); 354 } else if (strcmp(name, "virtual_port") == 0) { 355 if (str == NULL) 356 log_errx(1, "%s: %s missing its argument", __func__, name); 357 cur_port->vp = strtoul(str, NULL, 0); 358 } else if (strcmp(name, "cfiscsi_target") == 0) { 359 cur_port->cfiscsi_target = str; 360 str = NULL; 361 } else if (strcmp(name, "cfiscsi_state") == 0) { 362 if (str == NULL) 363 log_errx(1, "%s: %s missing its argument", __func__, name); 364 cur_port->cfiscsi_state = strtoul(str, NULL, 0); 365 } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) { 366 if (str == NULL) 367 log_errx(1, "%s: %s missing its argument", __func__, name); 368 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0); 369 } else if (strcmp(name, "ctld_portal_group_name") == 0) { 370 cur_port->ctld_portal_group_name = str; 371 str = NULL; 372 } else if (strcmp(name, "targ_port") == 0) { 373 devlist->cur_port = NULL; 374 } else if (strcmp(name, "ctlportlist") == 0) { 375 /* Nothing. */ 376 } else { 377 nvlist_move_string(cur_port->attr_list, name, str); 378 error = nvlist_error(cur_port->attr_list); 379 if (error != 0) 380 log_errc(1, error, "%s: failed to add nv pair for %s", 381 __func__, name); 382 str = NULL; 383 } 384 385 free(str); 386 } 387 388 static void 389 cctl_char_handler(void *user_data, const XML_Char *str, int len) 390 { 391 struct cctl_devlist_data *devlist; 392 393 devlist = (struct cctl_devlist_data *)user_data; 394 395 sbuf_bcat(devlist->cur_sb[devlist->level], str, len); 396 } 397 398 struct conf * 399 conf_new_from_kernel(struct kports &kports) 400 { 401 struct conf *conf = NULL; 402 struct target *targ; 403 struct portal_group *pg; 404 struct lun *cl; 405 struct ctl_lun_list list; 406 struct cctl_devlist_data devlist; 407 struct cctl_lun *lun; 408 struct cctl_port *port; 409 XML_Parser parser; 410 const char *key; 411 char *str, *name; 412 void *cookie; 413 int error, len, retval; 414 415 bzero(&devlist, sizeof(devlist)); 416 STAILQ_INIT(&devlist.lun_list); 417 STAILQ_INIT(&devlist.port_list); 418 419 log_debugx("obtaining previously configured CTL luns from the kernel"); 420 421 str = NULL; 422 len = 4096; 423 retry: 424 str = reinterpret_cast<char *>(realloc(str, len)); 425 if (str == NULL) 426 log_err(1, "realloc"); 427 428 bzero(&list, sizeof(list)); 429 list.alloc_len = len; 430 list.status = CTL_LUN_LIST_NONE; 431 list.lun_xml = str; 432 433 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) { 434 log_warn("error issuing CTL_LUN_LIST ioctl"); 435 free(str); 436 return (NULL); 437 } 438 439 if (list.status == CTL_LUN_LIST_ERROR) { 440 log_warnx("error returned from CTL_LUN_LIST ioctl: %s", 441 list.error_str); 442 free(str); 443 return (NULL); 444 } 445 446 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 447 len = len << 1; 448 goto retry; 449 } 450 451 parser = XML_ParserCreate(NULL); 452 if (parser == NULL) { 453 log_warnx("unable to create XML parser"); 454 free(str); 455 return (NULL); 456 } 457 458 XML_SetUserData(parser, &devlist); 459 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element); 460 XML_SetCharacterDataHandler(parser, cctl_char_handler); 461 462 retval = XML_Parse(parser, str, strlen(str), 1); 463 XML_ParserFree(parser); 464 free(str); 465 if (retval != 1) { 466 log_warnx("XML_Parse failed"); 467 return (NULL); 468 } 469 470 str = NULL; 471 len = 4096; 472 retry_port: 473 str = reinterpret_cast<char *>(realloc(str, len)); 474 if (str == NULL) 475 log_err(1, "realloc"); 476 477 bzero(&list, sizeof(list)); 478 list.alloc_len = len; 479 list.status = CTL_LUN_LIST_NONE; 480 list.lun_xml = str; 481 482 if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) { 483 log_warn("error issuing CTL_PORT_LIST ioctl"); 484 free(str); 485 return (NULL); 486 } 487 488 if (list.status == CTL_LUN_LIST_ERROR) { 489 log_warnx("error returned from CTL_PORT_LIST ioctl: %s", 490 list.error_str); 491 free(str); 492 return (NULL); 493 } 494 495 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 496 len = len << 1; 497 goto retry_port; 498 } 499 500 parser = XML_ParserCreate(NULL); 501 if (parser == NULL) { 502 log_warnx("unable to create XML parser"); 503 free(str); 504 return (NULL); 505 } 506 507 XML_SetUserData(parser, &devlist); 508 XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement); 509 XML_SetCharacterDataHandler(parser, cctl_char_handler); 510 511 retval = XML_Parse(parser, str, strlen(str), 1); 512 XML_ParserFree(parser); 513 free(str); 514 if (retval != 1) { 515 log_warnx("XML_Parse failed"); 516 return (NULL); 517 } 518 519 conf = conf_new(); 520 521 name = NULL; 522 STAILQ_FOREACH(port, &devlist.port_list, links) { 523 if (strcmp(port->port_frontend, "ha") == 0) 524 continue; 525 free(name); 526 if (port->pp == 0 && port->vp == 0) { 527 name = checked_strdup(port->port_name); 528 } else if (port->vp == 0) { 529 retval = asprintf(&name, "%s/%d", 530 port->port_name, port->pp); 531 if (retval <= 0) 532 log_err(1, "asprintf"); 533 } else { 534 retval = asprintf(&name, "%s/%d/%d", 535 port->port_name, port->pp, port->vp); 536 if (retval <= 0) 537 log_err(1, "asprintf"); 538 } 539 540 if (port->cfiscsi_target == NULL) { 541 log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ", 542 port->port_id, name); 543 if (!kports.has_port(name)) { 544 if (!kports.add_port(name, port->port_id)) { 545 log_warnx("kports::add_port failed"); 546 continue; 547 } 548 } 549 continue; 550 } 551 if (port->cfiscsi_state != 1) { 552 log_debugx("CTL port %ju is not active (%d); ignoring", 553 (uintmax_t)port->port_id, port->cfiscsi_state); 554 continue; 555 } 556 557 targ = target_find(conf, port->cfiscsi_target); 558 if (targ == NULL) { 559 targ = target_new(conf, port->cfiscsi_target); 560 if (targ == NULL) { 561 log_warnx("target_new failed"); 562 continue; 563 } 564 } 565 566 if (port->ctld_portal_group_name == NULL) 567 continue; 568 pg = portal_group_find(conf, port->ctld_portal_group_name); 569 if (pg == NULL) { 570 pg = portal_group_new(conf, port->ctld_portal_group_name); 571 if (pg == NULL) { 572 log_warnx("portal_group_new failed"); 573 continue; 574 } 575 } 576 pg->set_tag(port->cfiscsi_portal_group_tag); 577 if (!port_new(conf, targ, pg, port->port_id)) { 578 log_warnx("port_new failed"); 579 continue; 580 } 581 } 582 while ((port = STAILQ_FIRST(&devlist.port_list))) { 583 STAILQ_REMOVE_HEAD(&devlist.port_list, links); 584 free(port->port_frontend); 585 free(port->port_name); 586 free(port->cfiscsi_target); 587 free(port->ctld_portal_group_name); 588 nvlist_destroy(port->attr_list); 589 free(port); 590 } 591 free(name); 592 593 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 594 if (lun->ctld_name == NULL) { 595 log_debugx("CTL lun %ju wasn't managed by ctld; " 596 "ignoring", (uintmax_t)lun->lun_id); 597 continue; 598 } 599 600 cl = lun_find(conf, lun->ctld_name); 601 if (cl != NULL) { 602 log_warnx("found CTL lun %ju \"%s\", " 603 "also backed by CTL lun %d; ignoring", 604 (uintmax_t)lun->lun_id, lun->ctld_name, 605 cl->l_ctl_lun); 606 continue; 607 } 608 609 log_debugx("found CTL lun %ju \"%s\"", 610 (uintmax_t)lun->lun_id, lun->ctld_name); 611 612 cl = lun_new(conf, lun->ctld_name); 613 if (cl == NULL) { 614 log_warnx("lun_new failed"); 615 continue; 616 } 617 cl->l_backend = lun->backend_type; 618 lun->backend_type = NULL; 619 cl->l_device_type = lun->device_type; 620 cl->l_blocksize = lun->blocksize; 621 cl->l_device_id = lun->device_id; 622 lun->device_id = NULL; 623 cl->l_serial = lun->serial_number; 624 lun->serial_number = NULL; 625 cl->l_size = lun->size_blocks * cl->l_blocksize; 626 cl->l_ctl_lun = lun->lun_id; 627 628 cookie = NULL; 629 while ((key = nvlist_next(lun->attr_list, NULL, &cookie)) != 630 NULL) { 631 if (strcmp(key, "file") == 0 || 632 strcmp(key, "dev") == 0) { 633 cl->l_path = checked_strdup( 634 cnvlist_get_string(cookie)); 635 continue; 636 } 637 nvlist_add_string(cl->l_options, key, 638 cnvlist_get_string(cookie)); 639 error = nvlist_error(cl->l_options); 640 if (error != 0) 641 log_warnc(error, "unable to add CTL lun option " 642 "%s for CTL lun %ju \"%s\"", 643 key, (uintmax_t)lun->lun_id, 644 cl->l_name); 645 } 646 } 647 while ((lun = STAILQ_FIRST(&devlist.lun_list))) { 648 STAILQ_REMOVE_HEAD(&devlist.lun_list, links); 649 nvlist_destroy(lun->attr_list); 650 free(lun); 651 } 652 653 return (conf); 654 } 655 656 static void 657 nvlist_replace_string(nvlist_t *nvl, const char *name, const char *value) 658 { 659 if (nvlist_exists_string(nvl, name)) 660 nvlist_free_string(nvl, name); 661 nvlist_add_string(nvl, name, value); 662 } 663 664 int 665 kernel_lun_add(struct lun *lun) 666 { 667 struct ctl_lun_req req; 668 int error; 669 670 bzero(&req, sizeof(req)); 671 672 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 673 req.reqtype = CTL_LUNREQ_CREATE; 674 675 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 676 677 if (lun->l_size != 0) 678 req.reqdata.create.lun_size_bytes = lun->l_size; 679 680 if (lun->l_ctl_lun >= 0) { 681 req.reqdata.create.req_lun_id = lun->l_ctl_lun; 682 req.reqdata.create.flags |= CTL_LUN_FLAG_ID_REQ; 683 } 684 685 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 686 req.reqdata.create.device_type = lun->l_device_type; 687 688 if (lun->l_serial != NULL) { 689 strncpy((char *)req.reqdata.create.serial_num, lun->l_serial, 690 sizeof(req.reqdata.create.serial_num)); 691 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 692 } 693 694 if (lun->l_device_id != NULL) { 695 strncpy((char *)req.reqdata.create.device_id, lun->l_device_id, 696 sizeof(req.reqdata.create.device_id)); 697 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 698 } 699 700 if (lun->l_path != NULL) 701 nvlist_replace_string(lun->l_options, "file", lun->l_path); 702 703 nvlist_replace_string(lun->l_options, "ctld_name", lun->l_name); 704 705 if (!nvlist_exists_string(lun->l_options, "scsiname") && 706 lun->l_scsiname != NULL) 707 nvlist_add_string(lun->l_options, "scsiname", lun->l_scsiname); 708 709 if (!nvlist_empty(lun->l_options)) { 710 req.args = nvlist_pack(lun->l_options, &req.args_len); 711 if (req.args == NULL) { 712 log_warn("error packing nvlist"); 713 return (1); 714 } 715 } 716 717 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 718 free(req.args); 719 720 if (error != 0) { 721 log_warn("error issuing CTL_LUN_REQ ioctl"); 722 return (1); 723 } 724 725 switch (req.status) { 726 case CTL_LUN_ERROR: 727 log_warnx("LUN creation error: %s", req.error_str); 728 return (1); 729 case CTL_LUN_WARNING: 730 log_warnx("LUN creation warning: %s", req.error_str); 731 break; 732 case CTL_LUN_OK: 733 break; 734 default: 735 log_warnx("unknown LUN creation status: %d", 736 req.status); 737 return (1); 738 } 739 740 lun->l_ctl_lun = req.reqdata.create.req_lun_id; 741 return (0); 742 } 743 744 int 745 kernel_lun_modify(struct lun *lun) 746 { 747 struct ctl_lun_req req; 748 int error; 749 750 bzero(&req, sizeof(req)); 751 752 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 753 req.reqtype = CTL_LUNREQ_MODIFY; 754 755 req.reqdata.modify.lun_id = lun->l_ctl_lun; 756 req.reqdata.modify.lun_size_bytes = lun->l_size; 757 758 if (lun->l_path != NULL) 759 nvlist_replace_string(lun->l_options, "file", lun->l_path); 760 761 nvlist_replace_string(lun->l_options, "ctld_name", lun->l_name); 762 763 if (!nvlist_exists_string(lun->l_options, "scsiname") && 764 lun->l_scsiname != NULL) 765 nvlist_add_string(lun->l_options, "scsiname", lun->l_scsiname); 766 767 if (!nvlist_empty(lun->l_options)) { 768 req.args = nvlist_pack(lun->l_options, &req.args_len); 769 if (req.args == NULL) { 770 log_warn("error packing nvlist"); 771 return (1); 772 } 773 } 774 775 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 776 free(req.args); 777 778 if (error != 0) { 779 log_warn("error issuing CTL_LUN_REQ ioctl"); 780 return (1); 781 } 782 783 switch (req.status) { 784 case CTL_LUN_ERROR: 785 log_warnx("LUN modification error: %s", req.error_str); 786 return (1); 787 case CTL_LUN_WARNING: 788 log_warnx("LUN modification warning: %s", req.error_str); 789 break; 790 case CTL_LUN_OK: 791 break; 792 default: 793 log_warnx("unknown LUN modification status: %d", 794 req.status); 795 return (1); 796 } 797 798 return (0); 799 } 800 801 int 802 kernel_lun_remove(struct lun *lun) 803 { 804 struct ctl_lun_req req; 805 806 bzero(&req, sizeof(req)); 807 808 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 809 req.reqtype = CTL_LUNREQ_RM; 810 811 req.reqdata.rm.lun_id = lun->l_ctl_lun; 812 813 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 814 log_warn("error issuing CTL_LUN_REQ ioctl"); 815 return (1); 816 } 817 818 switch (req.status) { 819 case CTL_LUN_ERROR: 820 log_warnx("LUN removal error: %s", req.error_str); 821 return (1); 822 case CTL_LUN_WARNING: 823 log_warnx("LUN removal warning: %s", req.error_str); 824 break; 825 case CTL_LUN_OK: 826 break; 827 default: 828 log_warnx("unknown LUN removal status: %d", req.status); 829 return (1); 830 } 831 832 return (0); 833 } 834 835 void 836 kernel_handoff(struct ctld_connection *conn) 837 { 838 struct portal_group *pg = conn->conn_portal->portal_group(); 839 struct ctl_iscsi req; 840 841 bzero(&req, sizeof(req)); 842 843 req.type = CTL_ISCSI_HANDOFF; 844 strlcpy(req.data.handoff.initiator_name, 845 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 846 strlcpy(req.data.handoff.initiator_addr, 847 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 848 if (conn->conn_initiator_alias != NULL) { 849 strlcpy(req.data.handoff.initiator_alias, 850 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 851 } 852 memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid, 853 sizeof(req.data.handoff.initiator_isid)); 854 strlcpy(req.data.handoff.target_name, 855 conn->conn_target->t_name, sizeof(req.data.handoff.target_name)); 856 strlcpy(req.data.handoff.offload, pg->offload(), 857 sizeof(req.data.handoff.offload)); 858 #ifdef ICL_KERNEL_PROXY 859 if (proxy_mode) 860 req.data.handoff.connection_id = conn->conn.conn_socket; 861 else 862 req.data.handoff.socket = conn->conn.conn_socket; 863 #else 864 req.data.handoff.socket = conn->conn.conn_socket; 865 #endif 866 req.data.handoff.portal_group_tag = pg->tag(); 867 if (conn->conn.conn_header_digest == CONN_DIGEST_CRC32C) 868 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 869 if (conn->conn.conn_data_digest == CONN_DIGEST_CRC32C) 870 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 871 req.data.handoff.cmdsn = conn->conn.conn_cmdsn; 872 req.data.handoff.statsn = conn->conn.conn_statsn; 873 req.data.handoff.max_recv_data_segment_length = 874 conn->conn.conn_max_recv_data_segment_length; 875 req.data.handoff.max_send_data_segment_length = 876 conn->conn.conn_max_send_data_segment_length; 877 req.data.handoff.max_burst_length = conn->conn.conn_max_burst_length; 878 req.data.handoff.first_burst_length = 879 conn->conn.conn_first_burst_length; 880 req.data.handoff.immediate_data = conn->conn.conn_immediate_data; 881 882 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 883 log_err(1, "error issuing CTL_ISCSI ioctl; " 884 "dropping connection"); 885 } 886 887 if (req.status != CTL_ISCSI_OK) { 888 log_errx(1, "error returned from CTL iSCSI handoff request: " 889 "%s; dropping connection", req.error_str); 890 } 891 } 892 893 static bool 894 ctl_create_port(const char *driver, const nvlist_t *nvl, uint32_t *ctl_port) 895 { 896 struct ctl_req req; 897 char result_buf[NVLIST_BUFSIZE]; 898 int error; 899 900 bzero(&req, sizeof(req)); 901 req.reqtype = CTL_REQ_CREATE; 902 903 strlcpy(req.driver, driver, sizeof(req.driver)); 904 req.args = nvlist_pack(nvl, &req.args_len); 905 if (req.args == NULL) { 906 log_warn("error packing nvlist"); 907 return (false); 908 } 909 910 req.result = result_buf; 911 req.result_len = sizeof(result_buf); 912 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 913 free(req.args); 914 915 if (error != 0) { 916 log_warn("error issuing CTL_PORT_REQ ioctl"); 917 return (false); 918 } 919 if (req.status == CTL_LUN_ERROR) { 920 log_warnx("error returned from port creation request: %s", 921 req.error_str); 922 return (false); 923 } 924 if (req.status != CTL_LUN_OK) { 925 log_warnx("unknown port creation request status %d", 926 req.status); 927 return (false); 928 } 929 930 freebsd::nvlist_up result_nvl(nvlist_unpack(result_buf, req.result_len, 931 0)); 932 if (result_nvl == NULL) { 933 log_warnx("error unpacking result nvlist"); 934 return (false); 935 } 936 937 *ctl_port = nvlist_get_number(result_nvl.get(), "port_id"); 938 return (true); 939 } 940 941 bool 942 portal_group_port::kernel_create_port() 943 { 944 struct portal_group *pg = p_portal_group; 945 struct target *targ = p_target; 946 947 freebsd::nvlist_up nvl = pg->options(); 948 nvlist_add_string(nvl.get(), "cfiscsi_target", targ->t_name); 949 nvlist_add_string(nvl.get(), "ctld_portal_group_name", pg->name()); 950 nvlist_add_stringf(nvl.get(), "cfiscsi_portal_group_tag", "%u", 951 pg->tag()); 952 953 if (targ->t_alias) { 954 nvlist_add_string(nvl.get(), "cfiscsi_target_alias", 955 targ->t_alias); 956 } 957 958 return (ctl_create_port("iscsi", nvl.get(), &p_ctl_port)); 959 } 960 961 bool 962 ioctl_port::kernel_create_port() 963 { 964 freebsd::nvlist_up nvl(nvlist_create(0)); 965 nvlist_add_stringf(nvl.get(), "pp", "%d", p_ioctl_pp); 966 nvlist_add_stringf(nvl.get(), "vp", "%d", p_ioctl_vp); 967 968 return (ctl_create_port("ioctl", nvl.get(), &p_ctl_port)); 969 } 970 971 bool 972 kernel_port::kernel_create_port() 973 { 974 struct ctl_port_entry entry; 975 struct target *targ = p_target; 976 977 p_ctl_port = p_pport->ctl_port(); 978 979 if (strncmp(targ->t_name, "naa.", 4) == 0 && 980 strlen(targ->t_name) == 20) { 981 bzero(&entry, sizeof(entry)); 982 entry.port_type = CTL_PORT_NONE; 983 entry.targ_port = p_ctl_port; 984 entry.flags |= CTL_PORT_WWNN_VALID; 985 entry.wwnn = strtoull(targ->t_name + 4, NULL, 16); 986 if (ioctl(ctl_fd, CTL_SET_PORT_WWNS, &entry) == -1) 987 log_warn("CTL_SET_PORT_WWNS ioctl failed"); 988 } 989 return (true); 990 } 991 992 bool 993 port::kernel_add() 994 { 995 struct ctl_port_entry entry; 996 struct ctl_lun_map lm; 997 struct target *targ = p_target; 998 int error, i; 999 1000 if (!kernel_create_port()) 1001 return (false); 1002 1003 /* Explicitly enable mapping to block any access except allowed. */ 1004 lm.port = p_ctl_port; 1005 lm.plun = UINT32_MAX; 1006 lm.lun = 0; 1007 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1008 if (error != 0) 1009 log_warn("CTL_LUN_MAP ioctl failed"); 1010 1011 /* Map configured LUNs */ 1012 for (i = 0; i < MAX_LUNS; i++) { 1013 if (targ->t_luns[i] == NULL) 1014 continue; 1015 lm.port = p_ctl_port; 1016 lm.plun = i; 1017 lm.lun = targ->t_luns[i]->l_ctl_lun; 1018 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1019 if (error != 0) 1020 log_warn("CTL_LUN_MAP ioctl failed"); 1021 } 1022 1023 /* Enable port */ 1024 bzero(&entry, sizeof(entry)); 1025 entry.targ_port = p_ctl_port; 1026 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 1027 if (error != 0) { 1028 log_warn("CTL_ENABLE_PORT ioctl failed"); 1029 return (false); 1030 } 1031 1032 return (true); 1033 } 1034 1035 bool 1036 port::kernel_update(const struct port *oport) 1037 { 1038 struct ctl_lun_map lm; 1039 struct target *targ = p_target; 1040 struct target *otarg = oport->p_target; 1041 int error, i; 1042 uint32_t olun; 1043 1044 p_ctl_port = oport->p_ctl_port; 1045 1046 /* Map configured LUNs and unmap others */ 1047 for (i = 0; i < MAX_LUNS; i++) { 1048 lm.port = p_ctl_port; 1049 lm.plun = i; 1050 if (targ->t_luns[i] == NULL) 1051 lm.lun = UINT32_MAX; 1052 else 1053 lm.lun = targ->t_luns[i]->l_ctl_lun; 1054 if (otarg->t_luns[i] == NULL) 1055 olun = UINT32_MAX; 1056 else 1057 olun = otarg->t_luns[i]->l_ctl_lun; 1058 if (lm.lun == olun) 1059 continue; 1060 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1061 if (error != 0) 1062 log_warn("CTL_LUN_MAP ioctl failed"); 1063 } 1064 return (true); 1065 } 1066 1067 bool 1068 ctl_remove_port(const char *driver, nvlist_t *nvl) 1069 { 1070 struct ctl_req req; 1071 int error; 1072 1073 strlcpy(req.driver, driver, sizeof(req.driver)); 1074 req.reqtype = CTL_REQ_REMOVE; 1075 req.args = nvlist_pack(nvl, &req.args_len); 1076 if (req.args == NULL) { 1077 log_warn("error packing nvlist"); 1078 return (false); 1079 } 1080 1081 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 1082 free(req.args); 1083 1084 if (error != 0) { 1085 log_warn("error issuing CTL_PORT_REQ ioctl"); 1086 return (false); 1087 } 1088 if (req.status == CTL_LUN_ERROR) { 1089 log_warnx("error returned from port removal request: %s", 1090 req.error_str); 1091 return (false); 1092 } 1093 if (req.status != CTL_LUN_OK) { 1094 log_warnx("unknown port removal request status %d", req.status); 1095 return (false); 1096 } 1097 return (true); 1098 } 1099 1100 bool 1101 portal_group_port::kernel_remove_port() 1102 { 1103 freebsd::nvlist_up nvl(nvlist_create(0)); 1104 nvlist_add_string(nvl.get(), "cfiscsi_target", p_target->t_name); 1105 nvlist_add_stringf(nvl.get(), "cfiscsi_portal_group_tag", "%u", 1106 p_portal_group->tag()); 1107 1108 return (ctl_remove_port("iscsi", nvl.get())); 1109 } 1110 1111 bool 1112 ioctl_port::kernel_remove_port() 1113 { 1114 freebsd::nvlist_up nvl(nvlist_create(0)); 1115 nvlist_add_stringf(nvl.get(), "port_id", "%d", p_ctl_port); 1116 1117 return (ctl_remove_port("ioctl", nvl.get())); 1118 } 1119 1120 bool 1121 kernel_port::kernel_remove_port() 1122 { 1123 struct ctl_lun_map lm; 1124 int error; 1125 1126 /* Disable LUN mapping. */ 1127 lm.port = p_ctl_port; 1128 lm.plun = UINT32_MAX; 1129 lm.lun = UINT32_MAX; 1130 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1131 if (error != 0) 1132 log_warn("CTL_LUN_MAP ioctl failed"); 1133 return (true); 1134 } 1135 1136 bool 1137 port::kernel_remove() 1138 { 1139 struct ctl_port_entry entry; 1140 int error; 1141 1142 /* Disable port */ 1143 bzero(&entry, sizeof(entry)); 1144 entry.targ_port = p_ctl_port; 1145 error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry); 1146 if (error != 0) { 1147 log_warn("CTL_DISABLE_PORT ioctl failed"); 1148 return (false); 1149 } 1150 1151 return (kernel_remove_port()); 1152 } 1153 1154 #ifdef ICL_KERNEL_PROXY 1155 void 1156 kernel_listen(struct addrinfo *ai, bool iser, int portal_id) 1157 { 1158 struct ctl_iscsi req; 1159 1160 bzero(&req, sizeof(req)); 1161 1162 req.type = CTL_ISCSI_LISTEN; 1163 req.data.listen.iser = iser; 1164 req.data.listen.domain = ai->ai_family; 1165 req.data.listen.socktype = ai->ai_socktype; 1166 req.data.listen.protocol = ai->ai_protocol; 1167 req.data.listen.addr = ai->ai_addr; 1168 req.data.listen.addrlen = ai->ai_addrlen; 1169 req.data.listen.portal_id = portal_id; 1170 1171 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1172 log_err(1, "error issuing CTL_ISCSI ioctl"); 1173 1174 if (req.status != CTL_ISCSI_OK) { 1175 log_errx(1, "error returned from CTL iSCSI listen: %s", 1176 req.error_str); 1177 } 1178 } 1179 1180 void 1181 kernel_accept(int *connection_id, int *portal_id, 1182 struct sockaddr *client_sa, socklen_t *client_salen) 1183 { 1184 struct ctl_iscsi req; 1185 struct sockaddr_storage ss; 1186 1187 bzero(&req, sizeof(req)); 1188 1189 req.type = CTL_ISCSI_ACCEPT; 1190 req.data.accept.initiator_addr = (struct sockaddr *)&ss; 1191 1192 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1193 log_err(1, "error issuing CTL_ISCSI ioctl"); 1194 1195 if (req.status != CTL_ISCSI_OK) { 1196 log_errx(1, "error returned from CTL iSCSI accept: %s", 1197 req.error_str); 1198 } 1199 1200 *connection_id = req.data.accept.connection_id; 1201 *portal_id = req.data.accept.portal_id; 1202 *client_salen = req.data.accept.initiator_addrlen; 1203 memcpy(client_sa, &ss, *client_salen); 1204 } 1205 1206 void 1207 kernel_send(struct pdu *pdu) 1208 { 1209 struct ctl_iscsi req; 1210 1211 bzero(&req, sizeof(req)); 1212 1213 req.type = CTL_ISCSI_SEND; 1214 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 1215 req.data.send.bhs = pdu->pdu_bhs; 1216 req.data.send.data_segment_len = pdu->pdu_data_len; 1217 req.data.send.data_segment = pdu->pdu_data; 1218 1219 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1220 log_err(1, "error issuing CTL_ISCSI ioctl; " 1221 "dropping connection"); 1222 } 1223 1224 if (req.status != CTL_ISCSI_OK) { 1225 log_errx(1, "error returned from CTL iSCSI send: " 1226 "%s; dropping connection", req.error_str); 1227 } 1228 } 1229 1230 void 1231 kernel_receive(struct pdu *pdu) 1232 { 1233 struct connection *conn; 1234 struct ctl_iscsi req; 1235 1236 conn = pdu->pdu_connection; 1237 pdu->pdu_data = malloc(conn->conn_max_recv_data_segment_length); 1238 if (pdu->pdu_data == NULL) 1239 log_err(1, "malloc"); 1240 1241 bzero(&req, sizeof(req)); 1242 1243 req.type = CTL_ISCSI_RECEIVE; 1244 req.data.receive.connection_id = conn->conn_socket; 1245 req.data.receive.bhs = pdu->pdu_bhs; 1246 req.data.receive.data_segment_len = 1247 conn->conn_max_recv_data_segment_length; 1248 req.data.receive.data_segment = pdu->pdu_data; 1249 1250 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1251 log_err(1, "error issuing CTL_ISCSI ioctl; " 1252 "dropping connection"); 1253 } 1254 1255 if (req.status != CTL_ISCSI_OK) { 1256 log_errx(1, "error returned from CTL iSCSI receive: " 1257 "%s; dropping connection", req.error_str); 1258 } 1259 1260 } 1261 1262 #endif /* ICL_KERNEL_PROXY */ 1263 1264 /* 1265 * XXX: I CANT INTO LATIN 1266 */ 1267 void 1268 kernel_capsicate(void) 1269 { 1270 cap_rights_t rights; 1271 const unsigned long cmds[] = { CTL_ISCSI }; 1272 1273 cap_rights_init(&rights, CAP_IOCTL); 1274 if (caph_rights_limit(ctl_fd, &rights) < 0) 1275 log_err(1, "cap_rights_limit"); 1276 1277 if (caph_ioctls_limit(ctl_fd, cmds, nitems(cmds)) < 0) 1278 log_err(1, "cap_ioctls_limit"); 1279 1280 if (caph_enter() < 0) 1281 log_err(1, "cap_enter"); 1282 1283 if (cap_sandboxed()) 1284 log_debugx("Capsicum capability mode enabled"); 1285 else 1286 log_warnx("Capsicum capability mode not supported"); 1287 } 1288 1289