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 316253 2017-03-30 06:13:54Z ngie $"); 39 40#include <sys/param.h> 41#include <sys/capsicum.h> 42#include <sys/callout.h> 43#include <sys/ioctl.h> 44#include <sys/linker.h> 45#include <sys/queue.h> 46#include <sys/sbuf.h> 47#include <sys/stat.h> 48#include <assert.h> 49#include <bsdxml.h> 50#include <ctype.h> 51#include <errno.h> 52#include <fcntl.h> 53#include <stdint.h> 54#include <stdio.h> 55#include <stdlib.h> 56#include <string.h> 57#include <strings.h> 58#include <cam/scsi/scsi_all.h> 59#include <cam/scsi/scsi_message.h> 60#include <cam/ctl/ctl.h> 61#include <cam/ctl/ctl_io.h> 62#include <cam/ctl/ctl_backend.h> 63#include <cam/ctl/ctl_ioctl.h> 64#include <cam/ctl/ctl_util.h> 65#include <cam/ctl/ctl_scsi_all.h> 66 67#include "ctld.h" 68 69#ifdef ICL_KERNEL_PROXY 70#include <netdb.h> 71#endif 72 73extern bool proxy_mode; 74 75static int ctl_fd = 0; 76 77void 78kernel_init(void) 79{ 80 int retval, saved_errno; 81 82 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 83 if (ctl_fd < 0 && errno == ENOENT) { 84 saved_errno = errno; 85 retval = kldload("ctl"); 86 if (retval != -1) 87 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 88 else 89 errno = saved_errno; 90 } 91 if (ctl_fd < 0) 92 log_err(1, "failed to open %s", CTL_DEFAULT_DEV); 93} 94 95/* 96 * Name/value pair used for per-LUN attributes. 97 */ 98struct cctl_lun_nv { 99 char *name; 100 char *value; 101 STAILQ_ENTRY(cctl_lun_nv) links; 102}; 103 104/* 105 * Backend LUN information. 106 */ 107struct cctl_lun { 108 uint64_t lun_id; 109 char *backend_type; 110 uint8_t device_type; 111 uint64_t size_blocks; 112 uint32_t blocksize; 113 char *serial_number; 114 char *device_id; 115 char *ctld_name; 116 STAILQ_HEAD(,cctl_lun_nv) attr_list; 117 STAILQ_ENTRY(cctl_lun) links; 118}; 119 120struct cctl_port { 121 uint32_t port_id; 122 char *port_frontend; 123 char *port_name; 124 int pp; 125 int vp; 126 int cfiscsi_state; 127 char *cfiscsi_target; 128 uint16_t cfiscsi_portal_group_tag; 129 char *ctld_portal_group_name; 130 STAILQ_HEAD(,cctl_lun_nv) attr_list; 131 STAILQ_ENTRY(cctl_port) links; 132}; 133 134struct cctl_devlist_data { 135 int num_luns; 136 STAILQ_HEAD(,cctl_lun) lun_list; 137 struct cctl_lun *cur_lun; 138 int num_ports; 139 STAILQ_HEAD(,cctl_port) port_list; 140 struct cctl_port *cur_port; 141 int level; 142 struct sbuf *cur_sb[32]; 143}; 144 145static void 146cctl_start_element(void *user_data, const char *name, const char **attr) 147{ 148 int i; 149 struct cctl_devlist_data *devlist; 150 struct cctl_lun *cur_lun; 151 152 devlist = (struct cctl_devlist_data *)user_data; 153 cur_lun = devlist->cur_lun; 154 devlist->level++; 155 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 156 sizeof(devlist->cur_sb[0]))) 157 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 158 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 159 160 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 161 if (devlist->cur_sb[devlist->level] == NULL) 162 log_err(1, "%s: unable to allocate sbuf", __func__); 163 164 if (strcmp(name, "lun") == 0) { 165 if (cur_lun != NULL) 166 log_errx(1, "%s: improper lun element nesting", 167 __func__); 168 169 cur_lun = calloc(1, sizeof(*cur_lun)); 170 if (cur_lun == NULL) 171 log_err(1, "%s: cannot allocate %zd bytes", __func__, 172 sizeof(*cur_lun)); 173 174 devlist->num_luns++; 175 devlist->cur_lun = cur_lun; 176 177 STAILQ_INIT(&cur_lun->attr_list); 178 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links); 179 180 for (i = 0; attr[i] != NULL; i += 2) { 181 if (strcmp(attr[i], "id") == 0) { 182 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0); 183 } else { 184 log_errx(1, "%s: invalid LUN attribute %s = %s", 185 __func__, attr[i], attr[i+1]); 186 } 187 } 188 } 189} 190 191static void 192cctl_end_element(void *user_data, const char *name) 193{ 194 struct cctl_devlist_data *devlist; 195 struct cctl_lun *cur_lun; 196 char *str; 197 198 devlist = (struct cctl_devlist_data *)user_data; 199 cur_lun = devlist->cur_lun; 200 201 if ((cur_lun == NULL) 202 && (strcmp(name, "ctllunlist") != 0)) 203 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name); 204 205 if (devlist->cur_sb[devlist->level] == NULL) 206 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 207 devlist->level, name); 208 209 sbuf_finish(devlist->cur_sb[devlist->level]); 210 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 211 212 if (strlen(str) == 0) { 213 free(str); 214 str = NULL; 215 } 216 217 sbuf_delete(devlist->cur_sb[devlist->level]); 218 devlist->cur_sb[devlist->level] = NULL; 219 devlist->level--; 220 221 if (strcmp(name, "backend_type") == 0) { 222 cur_lun->backend_type = str; 223 str = NULL; 224 } else if (strcmp(name, "lun_type") == 0) { 225 cur_lun->device_type = strtoull(str, NULL, 0); 226 } else if (strcmp(name, "size") == 0) { 227 cur_lun->size_blocks = strtoull(str, NULL, 0); 228 } else if (strcmp(name, "blocksize") == 0) { 229 cur_lun->blocksize = strtoul(str, NULL, 0); 230 } else if (strcmp(name, "serial_number") == 0) { 231 cur_lun->serial_number = str; 232 str = NULL; 233 } else if (strcmp(name, "device_id") == 0) { 234 cur_lun->device_id = str; 235 str = NULL; 236 } else if (strcmp(name, "ctld_name") == 0) { 237 cur_lun->ctld_name = str; 238 str = NULL; 239 } else if (strcmp(name, "lun") == 0) { 240 devlist->cur_lun = NULL; 241 } else if (strcmp(name, "ctllunlist") == 0) { 242 /* Nothing. */ 243 } else { 244 struct cctl_lun_nv *nv; 245 246 nv = calloc(1, sizeof(*nv)); 247 if (nv == NULL) 248 log_err(1, "%s: can't allocate %zd bytes for nv pair", 249 __func__, sizeof(*nv)); 250 251 nv->name = checked_strdup(name); 252 253 nv->value = str; 254 str = NULL; 255 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links); 256 } 257 258 free(str); 259} 260 261static void 262cctl_start_pelement(void *user_data, const char *name, const char **attr) 263{ 264 int i; 265 struct cctl_devlist_data *devlist; 266 struct cctl_port *cur_port; 267 268 devlist = (struct cctl_devlist_data *)user_data; 269 cur_port = devlist->cur_port; 270 devlist->level++; 271 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 272 sizeof(devlist->cur_sb[0]))) 273 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 274 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 275 276 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 277 if (devlist->cur_sb[devlist->level] == NULL) 278 log_err(1, "%s: unable to allocate sbuf", __func__); 279 280 if (strcmp(name, "targ_port") == 0) { 281 if (cur_port != NULL) 282 log_errx(1, "%s: improper port element nesting (%s)", 283 __func__, name); 284 285 cur_port = calloc(1, sizeof(*cur_port)); 286 if (cur_port == NULL) 287 log_err(1, "%s: cannot allocate %zd bytes", __func__, 288 sizeof(*cur_port)); 289 290 devlist->num_ports++; 291 devlist->cur_port = cur_port; 292 293 STAILQ_INIT(&cur_port->attr_list); 294 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links); 295 296 for (i = 0; attr[i] != NULL; i += 2) { 297 if (strcmp(attr[i], "id") == 0) { 298 cur_port->port_id = strtoul(attr[i+1], NULL, 0); 299 } else { 300 log_errx(1, "%s: invalid LUN attribute %s = %s", 301 __func__, attr[i], attr[i+1]); 302 } 303 } 304 } 305} 306 307static void 308cctl_end_pelement(void *user_data, const char *name) 309{ 310 struct cctl_devlist_data *devlist; 311 struct cctl_port *cur_port; 312 char *str; 313 314 devlist = (struct cctl_devlist_data *)user_data; 315 cur_port = devlist->cur_port; 316 317 if ((cur_port == NULL) 318 && (strcmp(name, "ctlportlist") != 0)) 319 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name); 320 321 if (devlist->cur_sb[devlist->level] == NULL) 322 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 323 devlist->level, name); 324 325 sbuf_finish(devlist->cur_sb[devlist->level]); 326 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 327 328 if (strlen(str) == 0) { 329 free(str); 330 str = NULL; 331 } 332 333 sbuf_delete(devlist->cur_sb[devlist->level]); 334 devlist->cur_sb[devlist->level] = NULL; 335 devlist->level--; 336 337 if (strcmp(name, "frontend_type") == 0) { 338 cur_port->port_frontend = str; 339 str = NULL; 340 } else if (strcmp(name, "port_name") == 0) { 341 cur_port->port_name = str; 342 str = NULL; 343 } else if (strcmp(name, "physical_port") == 0) { 344 cur_port->pp = strtoul(str, NULL, 0); 345 } else if (strcmp(name, "virtual_port") == 0) { 346 cur_port->vp = strtoul(str, NULL, 0); 347 } else if (strcmp(name, "cfiscsi_target") == 0) { 348 cur_port->cfiscsi_target = str; 349 str = NULL; 350 } else if (strcmp(name, "cfiscsi_state") == 0) { 351 cur_port->cfiscsi_state = strtoul(str, NULL, 0); 352 } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) { 353 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0); 354 } else if (strcmp(name, "ctld_portal_group_name") == 0) { 355 cur_port->ctld_portal_group_name = str; 356 str = NULL; 357 } else if (strcmp(name, "targ_port") == 0) { 358 devlist->cur_port = NULL; 359 } else if (strcmp(name, "ctlportlist") == 0) { 360 /* Nothing. */ 361 } else { 362 struct cctl_lun_nv *nv; 363 364 nv = calloc(1, sizeof(*nv)); 365 if (nv == NULL) 366 log_err(1, "%s: can't allocate %zd bytes for nv pair", 367 __func__, sizeof(*nv)); 368 369 nv->name = checked_strdup(name); 370 371 nv->value = str; 372 str = NULL; 373 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links); 374 } 375 376 free(str); 377} 378 379static void 380cctl_char_handler(void *user_data, const XML_Char *str, int len) 381{ 382 struct cctl_devlist_data *devlist; 383 384 devlist = (struct cctl_devlist_data *)user_data; 385 386 sbuf_bcat(devlist->cur_sb[devlist->level], str, len); 387} 388 389struct conf * 390conf_new_from_kernel(void) 391{ 392 struct conf *conf = NULL; 393 struct target *targ; 394 struct portal_group *pg; 395 struct pport *pp; 396 struct port *cp; 397 struct lun *cl; 398 struct option *o; 399 struct ctl_lun_list list; 400 struct cctl_devlist_data devlist; 401 struct cctl_lun *lun; 402 struct cctl_port *port; 403 XML_Parser parser; 404 char *str, *name; 405 int len, retval; 406 407 bzero(&devlist, sizeof(devlist)); 408 STAILQ_INIT(&devlist.lun_list); 409 STAILQ_INIT(&devlist.port_list); 410 411 log_debugx("obtaining previously configured CTL luns from the kernel"); 412 413 str = NULL; 414 len = 4096; 415retry: 416 str = realloc(str, len); 417 if (str == NULL) 418 log_err(1, "realloc"); 419 420 bzero(&list, sizeof(list)); 421 list.alloc_len = len; 422 list.status = CTL_LUN_LIST_NONE; 423 list.lun_xml = str; 424 425 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) { 426 log_warn("error issuing CTL_LUN_LIST ioctl"); 427 free(str); 428 return (NULL); 429 } 430 431 if (list.status == CTL_LUN_LIST_ERROR) { 432 log_warnx("error returned from CTL_LUN_LIST ioctl: %s", 433 list.error_str); 434 free(str); 435 return (NULL); 436 } 437 438 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 439 len = len << 1; 440 goto retry; 441 } 442 443 parser = XML_ParserCreate(NULL); 444 if (parser == NULL) { 445 log_warnx("unable to create XML parser"); 446 free(str); 447 return (NULL); 448 } 449 450 XML_SetUserData(parser, &devlist); 451 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element); 452 XML_SetCharacterDataHandler(parser, cctl_char_handler); 453 454 retval = XML_Parse(parser, str, strlen(str), 1); 455 XML_ParserFree(parser); 456 free(str); 457 if (retval != 1) { 458 log_warnx("XML_Parse failed"); 459 return (NULL); 460 } 461 462 str = NULL; 463 len = 4096; 464retry_port: 465 str = realloc(str, len); 466 if (str == NULL) 467 log_err(1, "realloc"); 468 469 bzero(&list, sizeof(list)); 470 list.alloc_len = len; 471 list.status = CTL_LUN_LIST_NONE; 472 list.lun_xml = str; 473 474 if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) { 475 log_warn("error issuing CTL_PORT_LIST ioctl"); 476 free(str); 477 return (NULL); 478 } 479 480 if (list.status == CTL_LUN_LIST_ERROR) { 481 log_warnx("error returned from CTL_PORT_LIST ioctl: %s", 482 list.error_str); 483 free(str); 484 return (NULL); 485 } 486 487 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 488 len = len << 1; 489 goto retry_port; 490 } 491 492 parser = XML_ParserCreate(NULL); 493 if (parser == NULL) { 494 log_warnx("unable to create XML parser"); 495 free(str); 496 return (NULL); 497 } 498 499 XML_SetUserData(parser, &devlist); 500 XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement); 501 XML_SetCharacterDataHandler(parser, cctl_char_handler); 502 503 retval = XML_Parse(parser, str, strlen(str), 1); 504 XML_ParserFree(parser); 505 free(str); 506 if (retval != 1) { 507 log_warnx("XML_Parse failed"); 508 return (NULL); 509 } 510 511 conf = conf_new(); 512 513 name = NULL; 514 STAILQ_FOREACH(port, &devlist.port_list, links) { 515 if (strcmp(port->port_frontend, "ha") == 0) 516 continue; 517 if (name) 518 free(name); 519 if (port->pp == 0 && port->vp == 0) 520 name = checked_strdup(port->port_name); 521 else if (port->vp == 0) 522 asprintf(&name, "%s/%d", port->port_name, port->pp); 523 else 524 asprintf(&name, "%s/%d/%d", port->port_name, port->pp, 525 port->vp); 526 527 if (port->cfiscsi_target == NULL) { 528 log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ", 529 port->port_id, name); 530 pp = pport_find(conf, name); 531 if (pp == NULL) { 532#if 0 533 log_debugx("found new kernel port %u \"%s\"", 534 port->port_id, name); 535#endif 536 pp = pport_new(conf, name, port->port_id); 537 if (pp == NULL) { 538 log_warnx("pport_new failed"); 539 continue; 540 } 541 } 542 continue; 543 } 544 if (port->cfiscsi_state != 1) { 545 log_debugx("CTL port %ju is not active (%d); ignoring", 546 (uintmax_t)port->port_id, port->cfiscsi_state); 547 continue; 548 } 549 550 targ = target_find(conf, port->cfiscsi_target); 551 if (targ == NULL) { 552#if 0 553 log_debugx("found new kernel target %s for CTL port %ld", 554 port->cfiscsi_target, port->port_id); 555#endif 556 targ = target_new(conf, port->cfiscsi_target); 557 if (targ == NULL) { 558 log_warnx("target_new failed"); 559 continue; 560 } 561 } 562 563 if (port->ctld_portal_group_name == NULL) 564 continue; 565 pg = portal_group_find(conf, port->ctld_portal_group_name); 566 if (pg == NULL) { 567#if 0 568 log_debugx("found new kernel portal group %s for CTL port %ld", 569 port->ctld_portal_group_name, port->port_id); 570#endif 571 pg = portal_group_new(conf, port->ctld_portal_group_name); 572 if (pg == NULL) { 573 log_warnx("portal_group_new failed"); 574 continue; 575 } 576 } 577 pg->pg_tag = port->cfiscsi_portal_group_tag; 578 cp = port_new(conf, targ, pg); 579 if (cp == NULL) { 580 log_warnx("port_new failed"); 581 continue; 582 } 583 cp->p_ctl_port = port->port_id; 584 } 585 if (name) 586 free(name); 587 588 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 589 struct cctl_lun_nv *nv; 590 591 if (lun->ctld_name == NULL) { 592 log_debugx("CTL lun %ju wasn't managed by ctld; " 593 "ignoring", (uintmax_t)lun->lun_id); 594 continue; 595 } 596 597 cl = lun_find(conf, lun->ctld_name); 598 if (cl != NULL) { 599 log_warnx("found CTL lun %ju \"%s\", " 600 "also backed by CTL lun %d; ignoring", 601 (uintmax_t)lun->lun_id, lun->ctld_name, 602 cl->l_ctl_lun); 603 continue; 604 } 605 606 log_debugx("found CTL lun %ju \"%s\"", 607 (uintmax_t)lun->lun_id, lun->ctld_name); 608 609 cl = lun_new(conf, lun->ctld_name); 610 if (cl == NULL) { 611 log_warnx("lun_new failed"); 612 continue; 613 } 614 lun_set_backend(cl, lun->backend_type); 615 lun_set_device_type(cl, lun->device_type); 616 lun_set_blocksize(cl, lun->blocksize); 617 lun_set_device_id(cl, lun->device_id); 618 lun_set_serial(cl, lun->serial_number); 619 lun_set_size(cl, lun->size_blocks * cl->l_blocksize); 620 lun_set_ctl_lun(cl, lun->lun_id); 621 622 STAILQ_FOREACH(nv, &lun->attr_list, links) { 623 if (strcmp(nv->name, "file") == 0 || 624 strcmp(nv->name, "dev") == 0) { 625 lun_set_path(cl, nv->value); 626 continue; 627 } 628 o = option_new(&cl->l_options, nv->name, nv->value); 629 if (o == NULL) 630 log_warnx("unable to add CTL lun option %s " 631 "for CTL lun %ju \"%s\"", 632 nv->name, (uintmax_t) lun->lun_id, 633 cl->l_name); 634 } 635 } 636 637 return (conf); 638} 639 640static void 641str_arg(struct ctl_be_arg *arg, const char *name, const char *value) 642{ 643 644 arg->namelen = strlen(name) + 1; 645 arg->name = __DECONST(char *, name); 646 arg->vallen = strlen(value) + 1; 647 arg->value = __DECONST(char *, value); 648 arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD; 649} 650 651int 652kernel_lun_add(struct lun *lun) 653{ 654 struct option *o; 655 struct ctl_lun_req req; 656 int error, i, num_options; 657 658 bzero(&req, sizeof(req)); 659 660 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 661 req.reqtype = CTL_LUNREQ_CREATE; 662 663 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 664 665 if (lun->l_size != 0) 666 req.reqdata.create.lun_size_bytes = lun->l_size; 667 668 if (lun->l_ctl_lun >= 0) { 669 req.reqdata.create.req_lun_id = lun->l_ctl_lun; 670 req.reqdata.create.flags |= CTL_LUN_FLAG_ID_REQ; 671 } 672 673 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 674 req.reqdata.create.device_type = lun->l_device_type; 675 676 if (lun->l_serial != NULL) { 677 strncpy(req.reqdata.create.serial_num, lun->l_serial, 678 sizeof(req.reqdata.create.serial_num)); 679 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 680 } 681 682 if (lun->l_device_id != NULL) { 683 strncpy(req.reqdata.create.device_id, lun->l_device_id, 684 sizeof(req.reqdata.create.device_id)); 685 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 686 } 687 688 if (lun->l_path != NULL) { 689 o = option_find(&lun->l_options, "file"); 690 if (o != NULL) { 691 option_set(o, lun->l_path); 692 } else { 693 o = option_new(&lun->l_options, "file", lun->l_path); 694 assert(o != NULL); 695 } 696 } 697 698 o = option_find(&lun->l_options, "ctld_name"); 699 if (o != NULL) { 700 option_set(o, lun->l_name); 701 } else { 702 o = option_new(&lun->l_options, "ctld_name", lun->l_name); 703 assert(o != NULL); 704 } 705 706 o = option_find(&lun->l_options, "scsiname"); 707 if (o == NULL && lun->l_scsiname != NULL) { 708 o = option_new(&lun->l_options, "scsiname", lun->l_scsiname); 709 assert(o != NULL); 710 } 711 712 num_options = 0; 713 TAILQ_FOREACH(o, &lun->l_options, o_next) 714 num_options++; 715 716 req.num_be_args = num_options; 717 if (num_options > 0) { 718 req.be_args = malloc(num_options * sizeof(*req.be_args)); 719 if (req.be_args == NULL) { 720 log_warn("error allocating %zd bytes", 721 num_options * sizeof(*req.be_args)); 722 return (1); 723 } 724 725 i = 0; 726 TAILQ_FOREACH(o, &lun->l_options, o_next) { 727 str_arg(&req.be_args[i], o->o_name, o->o_value); 728 i++; 729 } 730 assert(i == num_options); 731 } 732 733 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 734 free(req.be_args); 735 if (error != 0) { 736 log_warn("error issuing CTL_LUN_REQ ioctl"); 737 return (1); 738 } 739 740 switch (req.status) { 741 case CTL_LUN_ERROR: 742 log_warnx("LUN creation error: %s", req.error_str); 743 return (1); 744 case CTL_LUN_WARNING: 745 log_warnx("LUN creation warning: %s", req.error_str); 746 break; 747 case CTL_LUN_OK: 748 break; 749 default: 750 log_warnx("unknown LUN creation status: %d", 751 req.status); 752 return (1); 753 } 754 755 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id); 756 return (0); 757} 758 759int 760kernel_lun_modify(struct lun *lun) 761{ 762 struct option *o; 763 struct ctl_lun_req req; 764 int error, i, num_options; 765 766 bzero(&req, sizeof(req)); 767 768 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 769 req.reqtype = CTL_LUNREQ_MODIFY; 770 771 req.reqdata.modify.lun_id = lun->l_ctl_lun; 772 req.reqdata.modify.lun_size_bytes = lun->l_size; 773 774 num_options = 0; 775 TAILQ_FOREACH(o, &lun->l_options, o_next) 776 num_options++; 777 778 req.num_be_args = num_options; 779 if (num_options > 0) { 780 req.be_args = malloc(num_options * sizeof(*req.be_args)); 781 if (req.be_args == NULL) { 782 log_warn("error allocating %zd bytes", 783 num_options * sizeof(*req.be_args)); 784 return (1); 785 } 786 787 i = 0; 788 TAILQ_FOREACH(o, &lun->l_options, o_next) { 789 str_arg(&req.be_args[i], o->o_name, o->o_value); 790 i++; 791 } 792 assert(i == num_options); 793 } 794 795 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 796 free(req.be_args); 797 if (error != 0) { 798 log_warn("error issuing CTL_LUN_REQ ioctl"); 799 return (1); 800 } 801 802 switch (req.status) { 803 case CTL_LUN_ERROR: 804 log_warnx("LUN modification error: %s", req.error_str); 805 return (1); 806 case CTL_LUN_WARNING: 807 log_warnx("LUN modification warning: %s", req.error_str); 808 break; 809 case CTL_LUN_OK: 810 break; 811 default: 812 log_warnx("unknown LUN modification status: %d", 813 req.status); 814 return (1); 815 } 816 817 return (0); 818} 819 820int 821kernel_lun_remove(struct lun *lun) 822{ 823 struct ctl_lun_req req; 824 825 bzero(&req, sizeof(req)); 826 827 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 828 req.reqtype = CTL_LUNREQ_RM; 829 830 req.reqdata.rm.lun_id = lun->l_ctl_lun; 831 832 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 833 log_warn("error issuing CTL_LUN_REQ ioctl"); 834 return (1); 835 } 836 837 switch (req.status) { 838 case CTL_LUN_ERROR: 839 log_warnx("LUN removal error: %s", req.error_str); 840 return (1); 841 case CTL_LUN_WARNING: 842 log_warnx("LUN removal warning: %s", req.error_str); 843 break; 844 case CTL_LUN_OK: 845 break; 846 default: 847 log_warnx("unknown LUN removal status: %d", req.status); 848 return (1); 849 } 850 851 return (0); 852} 853 854void 855kernel_handoff(struct connection *conn) 856{ 857 struct ctl_iscsi req; 858 859 bzero(&req, sizeof(req)); 860 861 req.type = CTL_ISCSI_HANDOFF; 862 strlcpy(req.data.handoff.initiator_name, 863 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 864 strlcpy(req.data.handoff.initiator_addr, 865 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 866 if (conn->conn_initiator_alias != NULL) { 867 strlcpy(req.data.handoff.initiator_alias, 868 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 869 } 870 memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid, 871 sizeof(req.data.handoff.initiator_isid)); 872 strlcpy(req.data.handoff.target_name, 873 conn->conn_target->t_name, sizeof(req.data.handoff.target_name)); 874#ifdef ICL_KERNEL_PROXY 875 if (proxy_mode) 876 req.data.handoff.connection_id = conn->conn_socket; 877 else 878 req.data.handoff.socket = conn->conn_socket; 879#else 880 req.data.handoff.socket = conn->conn_socket; 881#endif 882 req.data.handoff.portal_group_tag = 883 conn->conn_portal->p_portal_group->pg_tag; 884 if (conn->conn_header_digest == CONN_DIGEST_CRC32C) 885 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 886 if (conn->conn_data_digest == CONN_DIGEST_CRC32C) 887 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 888 req.data.handoff.cmdsn = conn->conn_cmdsn; 889 req.data.handoff.statsn = conn->conn_statsn; 890 req.data.handoff.max_recv_data_segment_length = 891 conn->conn_max_data_segment_length; 892 req.data.handoff.max_burst_length = conn->conn_max_burst_length; 893 req.data.handoff.immediate_data = conn->conn_immediate_data; 894 895 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 896 log_err(1, "error issuing CTL_ISCSI ioctl; " 897 "dropping connection"); 898 } 899 900 if (req.status != CTL_ISCSI_OK) { 901 log_errx(1, "error returned from CTL iSCSI handoff request: " 902 "%s; dropping connection", req.error_str); 903 } 904} 905 906int 907kernel_port_add(struct port *port) 908{ 909 struct option *o; 910 struct ctl_port_entry entry; 911 struct ctl_req req; 912 struct ctl_lun_map lm; 913 struct target *targ = port->p_target; 914 struct portal_group *pg = port->p_portal_group; 915 char tagstr[16]; 916 int error, i, n; 917 918 /* Create iSCSI port. */ 919 if (port->p_portal_group) { 920 bzero(&req, sizeof(req)); 921 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 922 req.reqtype = CTL_REQ_CREATE; 923 req.num_args = 5; 924 TAILQ_FOREACH(o, &pg->pg_options, o_next) 925 req.num_args++; 926 req.args = malloc(req.num_args * sizeof(*req.args)); 927 if (req.args == NULL) 928 log_err(1, "malloc"); 929 n = 0; 930 req.args[n].namelen = sizeof("port_id"); 931 req.args[n].name = __DECONST(char *, "port_id"); 932 req.args[n].vallen = sizeof(port->p_ctl_port); 933 req.args[n].value = &port->p_ctl_port; 934 req.args[n++].flags = CTL_BEARG_WR; 935 str_arg(&req.args[n++], "cfiscsi_target", targ->t_name); 936 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag); 937 str_arg(&req.args[n++], "cfiscsi_portal_group_tag", tagstr); 938 if (targ->t_alias) 939 str_arg(&req.args[n++], "cfiscsi_target_alias", targ->t_alias); 940 str_arg(&req.args[n++], "ctld_portal_group_name", pg->pg_name); 941 TAILQ_FOREACH(o, &pg->pg_options, o_next) 942 str_arg(&req.args[n++], o->o_name, o->o_value); 943 req.num_args = n; 944 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 945 free(req.args); 946 if (error != 0) { 947 log_warn("error issuing CTL_PORT_REQ ioctl"); 948 return (1); 949 } 950 if (req.status == CTL_LUN_ERROR) { 951 log_warnx("error returned from port creation request: %s", 952 req.error_str); 953 return (1); 954 } 955 if (req.status != CTL_LUN_OK) { 956 log_warnx("unknown port creation request status %d", 957 req.status); 958 return (1); 959 } 960 } else if (port->p_pport) { 961 port->p_ctl_port = port->p_pport->pp_ctl_port; 962 963 if (strncmp(targ->t_name, "naa.", 4) == 0 && 964 strlen(targ->t_name) == 20) { 965 bzero(&entry, sizeof(entry)); 966 entry.port_type = CTL_PORT_NONE; 967 entry.targ_port = port->p_ctl_port; 968 entry.flags |= CTL_PORT_WWNN_VALID; 969 entry.wwnn = strtoull(targ->t_name + 4, NULL, 16); 970 if (ioctl(ctl_fd, CTL_SET_PORT_WWNS, &entry) == -1) 971 log_warn("CTL_SET_PORT_WWNS ioctl failed"); 972 } 973 } 974 975 /* Explicitly enable mapping to block any access except allowed. */ 976 lm.port = port->p_ctl_port; 977 lm.plun = UINT32_MAX; 978 lm.lun = 0; 979 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 980 if (error != 0) 981 log_warn("CTL_LUN_MAP ioctl failed"); 982 983 /* Map configured LUNs */ 984 for (i = 0; i < MAX_LUNS; i++) { 985 if (targ->t_luns[i] == NULL) 986 continue; 987 lm.port = port->p_ctl_port; 988 lm.plun = i; 989 lm.lun = targ->t_luns[i]->l_ctl_lun; 990 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 991 if (error != 0) 992 log_warn("CTL_LUN_MAP ioctl failed"); 993 } 994 995 /* Enable port */ 996 bzero(&entry, sizeof(entry)); 997 entry.targ_port = port->p_ctl_port; 998 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 999 if (error != 0) { 1000 log_warn("CTL_ENABLE_PORT ioctl failed"); 1001 return (-1); 1002 } 1003 1004 return (0); 1005} 1006 1007int 1008kernel_port_update(struct port *port, struct port *oport) 1009{ 1010 struct ctl_lun_map lm; 1011 struct target *targ = port->p_target; 1012 struct target *otarg = oport->p_target; 1013 int error, i; 1014 uint32_t olun; 1015 1016 /* Map configured LUNs and unmap others */ 1017 for (i = 0; i < MAX_LUNS; i++) { 1018 lm.port = port->p_ctl_port; 1019 lm.plun = i; 1020 if (targ->t_luns[i] == NULL) 1021 lm.lun = UINT32_MAX; 1022 else 1023 lm.lun = targ->t_luns[i]->l_ctl_lun; 1024 if (otarg->t_luns[i] == NULL) 1025 olun = UINT32_MAX; 1026 else 1027 olun = otarg->t_luns[i]->l_ctl_lun; 1028 if (lm.lun == olun) 1029 continue; 1030 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1031 if (error != 0) 1032 log_warn("CTL_LUN_MAP ioctl failed"); 1033 } 1034 return (0); 1035} 1036 1037int 1038kernel_port_remove(struct port *port) 1039{ 1040 struct ctl_port_entry entry; 1041 struct ctl_lun_map lm; 1042 struct ctl_req req; 1043 char tagstr[16]; 1044 struct target *targ = port->p_target; 1045 struct portal_group *pg = port->p_portal_group; 1046 int error; 1047 1048 /* Disable port */ 1049 bzero(&entry, sizeof(entry)); 1050 entry.targ_port = port->p_ctl_port; 1051 error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry); 1052 if (error != 0) { 1053 log_warn("CTL_DISABLE_PORT ioctl failed"); 1054 return (-1); 1055 } 1056 1057 /* Remove iSCSI port. */ 1058 if (port->p_portal_group) { 1059 bzero(&req, sizeof(req)); 1060 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 1061 req.reqtype = CTL_REQ_REMOVE; 1062 req.num_args = 2; 1063 req.args = malloc(req.num_args * sizeof(*req.args)); 1064 if (req.args == NULL) 1065 log_err(1, "malloc"); 1066 str_arg(&req.args[0], "cfiscsi_target", targ->t_name); 1067 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag); 1068 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr); 1069 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 1070 free(req.args); 1071 if (error != 0) { 1072 log_warn("error issuing CTL_PORT_REQ ioctl"); 1073 return (1); 1074 } 1075 if (req.status == CTL_LUN_ERROR) { 1076 log_warnx("error returned from port removal request: %s", 1077 req.error_str); 1078 return (1); 1079 } 1080 if (req.status != CTL_LUN_OK) { 1081 log_warnx("unknown port removal request status %d", 1082 req.status); 1083 return (1); 1084 } 1085 } else { 1086 /* Disable LUN mapping. */ 1087 lm.port = port->p_ctl_port; 1088 lm.plun = UINT32_MAX; 1089 lm.lun = UINT32_MAX; 1090 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1091 if (error != 0) 1092 log_warn("CTL_LUN_MAP ioctl failed"); 1093 } 1094 return (0); 1095} 1096 1097#ifdef ICL_KERNEL_PROXY 1098void 1099kernel_listen(struct addrinfo *ai, bool iser, int portal_id) 1100{ 1101 struct ctl_iscsi req; 1102 1103 bzero(&req, sizeof(req)); 1104 1105 req.type = CTL_ISCSI_LISTEN; 1106 req.data.listen.iser = iser; 1107 req.data.listen.domain = ai->ai_family; 1108 req.data.listen.socktype = ai->ai_socktype; 1109 req.data.listen.protocol = ai->ai_protocol; 1110 req.data.listen.addr = ai->ai_addr; 1111 req.data.listen.addrlen = ai->ai_addrlen; 1112 req.data.listen.portal_id = portal_id; 1113 1114 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1115 log_err(1, "error issuing CTL_ISCSI ioctl"); 1116 1117 if (req.status != CTL_ISCSI_OK) { 1118 log_errx(1, "error returned from CTL iSCSI listen: %s", 1119 req.error_str); 1120 } 1121} 1122 1123void 1124kernel_accept(int *connection_id, int *portal_id, 1125 struct sockaddr *client_sa, socklen_t *client_salen) 1126{ 1127 struct ctl_iscsi req; 1128 struct sockaddr_storage ss; 1129 1130 bzero(&req, sizeof(req)); 1131 1132 req.type = CTL_ISCSI_ACCEPT; 1133 req.data.accept.initiator_addr = (struct sockaddr *)&ss; 1134 1135 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1136 log_err(1, "error issuing CTL_ISCSI ioctl"); 1137 1138 if (req.status != CTL_ISCSI_OK) { 1139 log_errx(1, "error returned from CTL iSCSI accept: %s", 1140 req.error_str); 1141 } 1142 1143 *connection_id = req.data.accept.connection_id; 1144 *portal_id = req.data.accept.portal_id; 1145 *client_salen = req.data.accept.initiator_addrlen; 1146 memcpy(client_sa, &ss, *client_salen); 1147} 1148 1149void 1150kernel_send(struct pdu *pdu) 1151{ 1152 struct ctl_iscsi req; 1153 1154 bzero(&req, sizeof(req)); 1155 1156 req.type = CTL_ISCSI_SEND; 1157 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 1158 req.data.send.bhs = pdu->pdu_bhs; 1159 req.data.send.data_segment_len = pdu->pdu_data_len; 1160 req.data.send.data_segment = pdu->pdu_data; 1161 1162 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1163 log_err(1, "error issuing CTL_ISCSI ioctl; " 1164 "dropping connection"); 1165 } 1166 1167 if (req.status != CTL_ISCSI_OK) { 1168 log_errx(1, "error returned from CTL iSCSI send: " 1169 "%s; dropping connection", req.error_str); 1170 } 1171} 1172 1173void 1174kernel_receive(struct pdu *pdu) 1175{ 1176 struct ctl_iscsi req; 1177 1178 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH); 1179 if (pdu->pdu_data == NULL) 1180 log_err(1, "malloc"); 1181 1182 bzero(&req, sizeof(req)); 1183 1184 req.type = CTL_ISCSI_RECEIVE; 1185 req.data.receive.connection_id = pdu->pdu_connection->conn_socket; 1186 req.data.receive.bhs = pdu->pdu_bhs; 1187 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH; 1188 req.data.receive.data_segment = pdu->pdu_data; 1189 1190 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1191 log_err(1, "error issuing CTL_ISCSI ioctl; " 1192 "dropping connection"); 1193 } 1194 1195 if (req.status != CTL_ISCSI_OK) { 1196 log_errx(1, "error returned from CTL iSCSI receive: " 1197 "%s; dropping connection", req.error_str); 1198 } 1199 1200} 1201 1202#endif /* ICL_KERNEL_PROXY */ 1203 1204/* 1205 * XXX: I CANT INTO LATIN 1206 */ 1207void 1208kernel_capsicate(void) 1209{ 1210 int error; 1211 cap_rights_t rights; 1212 const unsigned long cmds[] = { CTL_ISCSI }; 1213 1214 cap_rights_init(&rights, CAP_IOCTL); 1215 error = cap_rights_limit(ctl_fd, &rights); 1216 if (error != 0 && errno != ENOSYS) 1217 log_err(1, "cap_rights_limit"); 1218 1219 error = cap_ioctls_limit(ctl_fd, cmds, 1220 sizeof(cmds) / sizeof(cmds[0])); 1221 if (error != 0 && errno != ENOSYS) 1222 log_err(1, "cap_ioctls_limit"); 1223 1224 error = cap_enter(); 1225 if (error != 0 && errno != ENOSYS) 1226 log_err(1, "cap_enter"); 1227 1228 if (cap_sandboxed()) 1229 log_debugx("Capsicum capability mode enabled"); 1230 else 1231 log_warnx("Capsicum capability mode not supported"); 1232} 1233 1234