kernel.c revision 286806
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: head/usr.sbin/ctld/kernel.c 286806 2015-08-15 13:34:38Z 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/capsicum.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_backend.h> 64#include <cam/ctl/ctl_ioctl.h> 65#include <cam/ctl/ctl_backend_block.h> 66#include <cam/ctl/ctl_util.h> 67#include <cam/ctl/ctl_scsi_all.h> 68 69#include "ctld.h" 70 71#ifdef ICL_KERNEL_PROXY 72#include <netdb.h> 73#endif 74 75extern bool proxy_mode; 76 77static int ctl_fd = 0; 78 79void 80kernel_init(void) 81{ 82 int retval, saved_errno; 83 84 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 85 if (ctl_fd < 0 && errno == ENOENT) { 86 saved_errno = errno; 87 retval = kldload("ctl"); 88 if (retval != -1) 89 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 90 else 91 errno = saved_errno; 92 } 93 if (ctl_fd < 0) 94 log_err(1, "failed to open %s", CTL_DEFAULT_DEV); 95} 96 97/* 98 * Name/value pair used for per-LUN attributes. 99 */ 100struct cctl_lun_nv { 101 char *name; 102 char *value; 103 STAILQ_ENTRY(cctl_lun_nv) links; 104}; 105 106/* 107 * Backend LUN information. 108 */ 109struct cctl_lun { 110 uint64_t lun_id; 111 char *backend_type; 112 uint64_t size_blocks; 113 uint32_t blocksize; 114 char *serial_number; 115 char *device_id; 116 char *ctld_name; 117 STAILQ_HEAD(,cctl_lun_nv) attr_list; 118 STAILQ_ENTRY(cctl_lun) links; 119}; 120 121struct cctl_port { 122 uint32_t port_id; 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, "size") == 0) { 225 cur_lun->size_blocks = strtoull(str, NULL, 0); 226 } else if (strcmp(name, "blocksize") == 0) { 227 cur_lun->blocksize = strtoul(str, NULL, 0); 228 } else if (strcmp(name, "serial_number") == 0) { 229 cur_lun->serial_number = str; 230 str = NULL; 231 } else if (strcmp(name, "device_id") == 0) { 232 cur_lun->device_id = str; 233 str = NULL; 234 } else if (strcmp(name, "ctld_name") == 0) { 235 cur_lun->ctld_name = str; 236 str = NULL; 237 } else if (strcmp(name, "lun") == 0) { 238 devlist->cur_lun = NULL; 239 } else if (strcmp(name, "ctllunlist") == 0) { 240 /* Nothing. */ 241 } else { 242 struct cctl_lun_nv *nv; 243 244 nv = calloc(1, sizeof(*nv)); 245 if (nv == NULL) 246 log_err(1, "%s: can't allocate %zd bytes for nv pair", 247 __func__, sizeof(*nv)); 248 249 nv->name = checked_strdup(name); 250 251 nv->value = str; 252 str = NULL; 253 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links); 254 } 255 256 free(str); 257} 258 259static void 260cctl_start_pelement(void *user_data, const char *name, const char **attr) 261{ 262 int i; 263 struct cctl_devlist_data *devlist; 264 struct cctl_port *cur_port; 265 266 devlist = (struct cctl_devlist_data *)user_data; 267 cur_port = devlist->cur_port; 268 devlist->level++; 269 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 270 sizeof(devlist->cur_sb[0]))) 271 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 272 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 273 274 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 275 if (devlist->cur_sb[devlist->level] == NULL) 276 log_err(1, "%s: unable to allocate sbuf", __func__); 277 278 if (strcmp(name, "targ_port") == 0) { 279 if (cur_port != NULL) 280 log_errx(1, "%s: improper port element nesting (%s)", 281 __func__, name); 282 283 cur_port = calloc(1, sizeof(*cur_port)); 284 if (cur_port == NULL) 285 log_err(1, "%s: cannot allocate %zd bytes", __func__, 286 sizeof(*cur_port)); 287 288 devlist->num_ports++; 289 devlist->cur_port = cur_port; 290 291 STAILQ_INIT(&cur_port->attr_list); 292 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links); 293 294 for (i = 0; attr[i] != NULL; i += 2) { 295 if (strcmp(attr[i], "id") == 0) { 296 cur_port->port_id = strtoul(attr[i+1], NULL, 0); 297 } else { 298 log_errx(1, "%s: invalid LUN attribute %s = %s", 299 __func__, attr[i], attr[i+1]); 300 } 301 } 302 } 303} 304 305static void 306cctl_end_pelement(void *user_data, const char *name) 307{ 308 struct cctl_devlist_data *devlist; 309 struct cctl_port *cur_port; 310 char *str; 311 312 devlist = (struct cctl_devlist_data *)user_data; 313 cur_port = devlist->cur_port; 314 315 if ((cur_port == NULL) 316 && (strcmp(name, "ctlportlist") != 0)) 317 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name); 318 319 if (devlist->cur_sb[devlist->level] == NULL) 320 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 321 devlist->level, name); 322 323 sbuf_finish(devlist->cur_sb[devlist->level]); 324 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 325 326 if (strlen(str) == 0) { 327 free(str); 328 str = NULL; 329 } 330 331 sbuf_delete(devlist->cur_sb[devlist->level]); 332 devlist->cur_sb[devlist->level] = NULL; 333 devlist->level--; 334 335 if (strcmp(name, "port_name") == 0) { 336 cur_port->port_name = str; 337 str = NULL; 338 } else if (strcmp(name, "physical_port") == 0) { 339 cur_port->pp = strtoul(str, NULL, 0); 340 } else if (strcmp(name, "virtual_port") == 0) { 341 cur_port->vp = strtoul(str, NULL, 0); 342 } else if (strcmp(name, "cfiscsi_target") == 0) { 343 cur_port->cfiscsi_target = str; 344 str = NULL; 345 } else if (strcmp(name, "cfiscsi_state") == 0) { 346 cur_port->cfiscsi_state = strtoul(str, NULL, 0); 347 } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) { 348 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0); 349 } else if (strcmp(name, "ctld_portal_group_name") == 0) { 350 cur_port->ctld_portal_group_name = str; 351 str = NULL; 352 } else if (strcmp(name, "targ_port") == 0) { 353 devlist->cur_port = NULL; 354 } else if (strcmp(name, "ctlportlist") == 0) { 355 /* Nothing. */ 356 } else { 357 struct cctl_lun_nv *nv; 358 359 nv = calloc(1, sizeof(*nv)); 360 if (nv == NULL) 361 log_err(1, "%s: can't allocate %zd bytes for nv pair", 362 __func__, sizeof(*nv)); 363 364 nv->name = checked_strdup(name); 365 366 nv->value = str; 367 str = NULL; 368 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links); 369 } 370 371 free(str); 372} 373 374static void 375cctl_char_handler(void *user_data, const XML_Char *str, int len) 376{ 377 struct cctl_devlist_data *devlist; 378 379 devlist = (struct cctl_devlist_data *)user_data; 380 381 sbuf_bcat(devlist->cur_sb[devlist->level], str, len); 382} 383 384struct conf * 385conf_new_from_kernel(void) 386{ 387 struct conf *conf = NULL; 388 struct target *targ; 389 struct portal_group *pg; 390 struct pport *pp; 391 struct port *cp; 392 struct lun *cl; 393 struct lun_option *lo; 394 struct ctl_lun_list list; 395 struct cctl_devlist_data devlist; 396 struct cctl_lun *lun; 397 struct cctl_port *port; 398 XML_Parser parser; 399 char *str, *name; 400 int len, retval; 401 402 bzero(&devlist, sizeof(devlist)); 403 STAILQ_INIT(&devlist.lun_list); 404 STAILQ_INIT(&devlist.port_list); 405 406 log_debugx("obtaining previously configured CTL luns from the kernel"); 407 408 str = NULL; 409 len = 4096; 410retry: 411 str = realloc(str, len); 412 if (str == NULL) 413 log_err(1, "realloc"); 414 415 bzero(&list, sizeof(list)); 416 list.alloc_len = len; 417 list.status = CTL_LUN_LIST_NONE; 418 list.lun_xml = str; 419 420 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) { 421 log_warn("error issuing CTL_LUN_LIST ioctl"); 422 free(str); 423 return (NULL); 424 } 425 426 if (list.status == CTL_LUN_LIST_ERROR) { 427 log_warnx("error returned from CTL_LUN_LIST ioctl: %s", 428 list.error_str); 429 free(str); 430 return (NULL); 431 } 432 433 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 434 len = len << 1; 435 goto retry; 436 } 437 438 parser = XML_ParserCreate(NULL); 439 if (parser == NULL) { 440 log_warnx("unable to create XML parser"); 441 free(str); 442 return (NULL); 443 } 444 445 XML_SetUserData(parser, &devlist); 446 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element); 447 XML_SetCharacterDataHandler(parser, cctl_char_handler); 448 449 retval = XML_Parse(parser, str, strlen(str), 1); 450 XML_ParserFree(parser); 451 free(str); 452 if (retval != 1) { 453 log_warnx("XML_Parse failed"); 454 return (NULL); 455 } 456 457 str = NULL; 458 len = 4096; 459retry_port: 460 str = realloc(str, len); 461 if (str == NULL) 462 log_err(1, "realloc"); 463 464 bzero(&list, sizeof(list)); 465 list.alloc_len = len; 466 list.status = CTL_LUN_LIST_NONE; 467 list.lun_xml = str; 468 469 if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) { 470 log_warn("error issuing CTL_PORT_LIST ioctl"); 471 free(str); 472 return (NULL); 473 } 474 475 if (list.status == CTL_PORT_LIST_ERROR) { 476 log_warnx("error returned from CTL_PORT_LIST ioctl: %s", 477 list.error_str); 478 free(str); 479 return (NULL); 480 } 481 482 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 483 len = len << 1; 484 goto retry_port; 485 } 486 487 parser = XML_ParserCreate(NULL); 488 if (parser == NULL) { 489 log_warnx("unable to create XML parser"); 490 free(str); 491 return (NULL); 492 } 493 494 XML_SetUserData(parser, &devlist); 495 XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement); 496 XML_SetCharacterDataHandler(parser, cctl_char_handler); 497 498 retval = XML_Parse(parser, str, strlen(str), 1); 499 XML_ParserFree(parser); 500 free(str); 501 if (retval != 1) { 502 log_warnx("XML_Parse failed"); 503 return (NULL); 504 } 505 506 conf = conf_new(); 507 508 name = NULL; 509 STAILQ_FOREACH(port, &devlist.port_list, links) { 510 if (name) 511 free(name); 512 if (port->pp == 0 && port->vp == 0) 513 name = checked_strdup(port->port_name); 514 else if (port->vp == 0) 515 asprintf(&name, "%s/%d", port->port_name, port->pp); 516 else 517 asprintf(&name, "%s/%d/%d", port->port_name, port->pp, 518 port->vp); 519 520 if (port->cfiscsi_target == NULL) { 521 log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ", 522 port->port_id, name); 523 pp = pport_find(conf, name); 524 if (pp == NULL) { 525#if 0 526 log_debugx("found new kernel port %u \"%s\"", 527 port->port_id, name); 528#endif 529 pp = pport_new(conf, name, port->port_id); 530 if (pp == NULL) { 531 log_warnx("pport_new failed"); 532 continue; 533 } 534 } 535 continue; 536 } 537 if (port->cfiscsi_state != 1) { 538 log_debugx("CTL port %ju is not active (%d); ignoring", 539 (uintmax_t)port->port_id, port->cfiscsi_state); 540 continue; 541 } 542 543 targ = target_find(conf, port->cfiscsi_target); 544 if (targ == NULL) { 545#if 0 546 log_debugx("found new kernel target %s for CTL port %ld", 547 port->cfiscsi_target, port->port_id); 548#endif 549 targ = target_new(conf, port->cfiscsi_target); 550 if (targ == NULL) { 551 log_warnx("target_new failed"); 552 continue; 553 } 554 } 555 556 if (port->ctld_portal_group_name == NULL) 557 continue; 558 pg = portal_group_find(conf, port->ctld_portal_group_name); 559 if (pg == NULL) { 560#if 0 561 log_debugx("found new kernel portal group %s for CTL port %ld", 562 port->ctld_portal_group_name, port->port_id); 563#endif 564 pg = portal_group_new(conf, port->ctld_portal_group_name); 565 if (pg == NULL) { 566 log_warnx("portal_group_new failed"); 567 continue; 568 } 569 } 570 pg->pg_tag = port->cfiscsi_portal_group_tag; 571 cp = port_new(conf, targ, pg); 572 if (cp == NULL) { 573 log_warnx("port_new failed"); 574 continue; 575 } 576 cp->p_ctl_port = port->port_id; 577 } 578 if (name) 579 free(name); 580 581 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 582 struct cctl_lun_nv *nv; 583 584 if (lun->ctld_name == NULL) { 585 log_debugx("CTL lun %ju wasn't managed by ctld; " 586 "ignoring", (uintmax_t)lun->lun_id); 587 continue; 588 } 589 590 cl = lun_find(conf, lun->ctld_name); 591 if (cl != NULL) { 592 log_warnx("found CTL lun %ju \"%s\", " 593 "also backed by CTL lun %d; ignoring", 594 (uintmax_t)lun->lun_id, lun->ctld_name, 595 cl->l_ctl_lun); 596 continue; 597 } 598 599 log_debugx("found CTL lun %ju \"%s\"", 600 (uintmax_t)lun->lun_id, lun->ctld_name); 601 602 cl = lun_new(conf, lun->ctld_name); 603 if (cl == NULL) { 604 log_warnx("lun_new failed"); 605 continue; 606 } 607 lun_set_backend(cl, lun->backend_type); 608 lun_set_blocksize(cl, lun->blocksize); 609 lun_set_device_id(cl, lun->device_id); 610 lun_set_serial(cl, lun->serial_number); 611 lun_set_size(cl, lun->size_blocks * cl->l_blocksize); 612 lun_set_ctl_lun(cl, lun->lun_id); 613 614 STAILQ_FOREACH(nv, &lun->attr_list, links) { 615 if (strcmp(nv->name, "file") == 0 || 616 strcmp(nv->name, "dev") == 0) { 617 lun_set_path(cl, nv->value); 618 continue; 619 } 620 lo = lun_option_new(cl, nv->name, nv->value); 621 if (lo == NULL) 622 log_warnx("unable to add CTL lun option %s " 623 "for CTL lun %ju \"%s\"", 624 nv->name, (uintmax_t) lun->lun_id, 625 cl->l_name); 626 } 627 } 628 629 return (conf); 630} 631 632static void 633str_arg(struct ctl_be_arg *arg, const char *name, const char *value) 634{ 635 636 arg->namelen = strlen(name) + 1; 637 arg->name = __DECONST(char *, name); 638 arg->vallen = strlen(value) + 1; 639 arg->value = __DECONST(char *, value); 640 arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD; 641} 642 643int 644kernel_lun_add(struct lun *lun) 645{ 646 struct lun_option *lo; 647 struct ctl_lun_req req; 648 int error, i, num_options; 649 650 bzero(&req, sizeof(req)); 651 652 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 653 req.reqtype = CTL_LUNREQ_CREATE; 654 655 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 656 657 if (lun->l_size != 0) 658 req.reqdata.create.lun_size_bytes = lun->l_size; 659 660 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 661 req.reqdata.create.device_type = T_DIRECT; 662 663 if (lun->l_serial != NULL) { 664 strncpy(req.reqdata.create.serial_num, lun->l_serial, 665 sizeof(req.reqdata.create.serial_num)); 666 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 667 } 668 669 if (lun->l_device_id != NULL) { 670 strncpy(req.reqdata.create.device_id, lun->l_device_id, 671 sizeof(req.reqdata.create.device_id)); 672 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 673 } 674 675 if (lun->l_path != NULL) { 676 lo = lun_option_find(lun, "file"); 677 if (lo != NULL) { 678 lun_option_set(lo, lun->l_path); 679 } else { 680 lo = lun_option_new(lun, "file", lun->l_path); 681 assert(lo != NULL); 682 } 683 } 684 685 lo = lun_option_find(lun, "ctld_name"); 686 if (lo != NULL) { 687 lun_option_set(lo, lun->l_name); 688 } else { 689 lo = lun_option_new(lun, "ctld_name", lun->l_name); 690 assert(lo != NULL); 691 } 692 693 lo = lun_option_find(lun, "scsiname"); 694 if (lo == NULL && lun->l_scsiname != NULL) { 695 lo = lun_option_new(lun, "scsiname", lun->l_scsiname); 696 assert(lo != NULL); 697 } 698 699 num_options = 0; 700 TAILQ_FOREACH(lo, &lun->l_options, lo_next) 701 num_options++; 702 703 req.num_be_args = num_options; 704 if (num_options > 0) { 705 req.be_args = malloc(num_options * sizeof(*req.be_args)); 706 if (req.be_args == NULL) { 707 log_warn("error allocating %zd bytes", 708 num_options * sizeof(*req.be_args)); 709 return (1); 710 } 711 712 i = 0; 713 TAILQ_FOREACH(lo, &lun->l_options, lo_next) { 714 str_arg(&req.be_args[i], lo->lo_name, lo->lo_value); 715 i++; 716 } 717 assert(i == num_options); 718 } 719 720 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 721 free(req.be_args); 722 if (error != 0) { 723 log_warn("error issuing CTL_LUN_REQ ioctl"); 724 return (1); 725 } 726 727 switch (req.status) { 728 case CTL_LUN_ERROR: 729 log_warnx("LUN creation error: %s", req.error_str); 730 return (1); 731 case CTL_LUN_WARNING: 732 log_warnx("LUN creation warning: %s", req.error_str); 733 break; 734 case CTL_LUN_OK: 735 break; 736 default: 737 log_warnx("unknown LUN creation status: %d", 738 req.status); 739 return (1); 740 } 741 742 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id); 743 return (0); 744} 745 746int 747kernel_lun_resize(struct lun *lun) 748{ 749 struct ctl_lun_req req; 750 751 bzero(&req, sizeof(req)); 752 753 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 754 req.reqtype = CTL_LUNREQ_MODIFY; 755 756 req.reqdata.modify.lun_id = lun->l_ctl_lun; 757 req.reqdata.modify.lun_size_bytes = lun->l_size; 758 759 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 760 log_warn("error issuing CTL_LUN_REQ ioctl"); 761 return (1); 762 } 763 764 switch (req.status) { 765 case CTL_LUN_ERROR: 766 log_warnx("LUN modification error: %s", req.error_str); 767 return (1); 768 case CTL_LUN_WARNING: 769 log_warnx("LUN modification warning: %s", req.error_str); 770 break; 771 case CTL_LUN_OK: 772 break; 773 default: 774 log_warnx("unknown LUN modification status: %d", 775 req.status); 776 return (1); 777 } 778 779 return (0); 780} 781 782int 783kernel_lun_remove(struct lun *lun) 784{ 785 struct ctl_lun_req req; 786 787 bzero(&req, sizeof(req)); 788 789 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 790 req.reqtype = CTL_LUNREQ_RM; 791 792 req.reqdata.rm.lun_id = lun->l_ctl_lun; 793 794 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 795 log_warn("error issuing CTL_LUN_REQ ioctl"); 796 return (1); 797 } 798 799 switch (req.status) { 800 case CTL_LUN_ERROR: 801 log_warnx("LUN removal error: %s", req.error_str); 802 return (1); 803 case CTL_LUN_WARNING: 804 log_warnx("LUN removal warning: %s", req.error_str); 805 break; 806 case CTL_LUN_OK: 807 break; 808 default: 809 log_warnx("unknown LUN removal status: %d", req.status); 810 return (1); 811 } 812 813 return (0); 814} 815 816void 817kernel_handoff(struct connection *conn) 818{ 819 struct ctl_iscsi req; 820 821 bzero(&req, sizeof(req)); 822 823 req.type = CTL_ISCSI_HANDOFF; 824 strlcpy(req.data.handoff.initiator_name, 825 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 826 strlcpy(req.data.handoff.initiator_addr, 827 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 828 if (conn->conn_initiator_alias != NULL) { 829 strlcpy(req.data.handoff.initiator_alias, 830 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 831 } 832 memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid, 833 sizeof(req.data.handoff.initiator_isid)); 834 strlcpy(req.data.handoff.target_name, 835 conn->conn_target->t_name, sizeof(req.data.handoff.target_name)); 836 if (conn->conn_portal->p_portal_group->pg_offload != NULL) { 837 strlcpy(req.data.handoff.offload, 838 conn->conn_portal->p_portal_group->pg_offload, 839 sizeof(req.data.handoff.offload)); 840 } 841#ifdef ICL_KERNEL_PROXY 842 if (proxy_mode) 843 req.data.handoff.connection_id = conn->conn_socket; 844 else 845 req.data.handoff.socket = conn->conn_socket; 846#else 847 req.data.handoff.socket = conn->conn_socket; 848#endif 849 req.data.handoff.portal_group_tag = 850 conn->conn_portal->p_portal_group->pg_tag; 851 if (conn->conn_header_digest == CONN_DIGEST_CRC32C) 852 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 853 if (conn->conn_data_digest == CONN_DIGEST_CRC32C) 854 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 855 req.data.handoff.cmdsn = conn->conn_cmdsn; 856 req.data.handoff.statsn = conn->conn_statsn; 857 req.data.handoff.max_recv_data_segment_length = 858 conn->conn_max_data_segment_length; 859 req.data.handoff.max_burst_length = conn->conn_max_burst_length; 860 req.data.handoff.immediate_data = conn->conn_immediate_data; 861 862 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 863 log_err(1, "error issuing CTL_ISCSI ioctl; " 864 "dropping connection"); 865 } 866 867 if (req.status != CTL_ISCSI_OK) { 868 log_errx(1, "error returned from CTL iSCSI handoff request: " 869 "%s; dropping connection", req.error_str); 870 } 871} 872 873void 874kernel_limits(const char *offload, size_t *max_data_segment_length) 875{ 876 struct ctl_iscsi req; 877 878 bzero(&req, sizeof(req)); 879 880 req.type = CTL_ISCSI_LIMITS; 881 if (offload != NULL) { 882 strlcpy(req.data.limits.offload, offload, 883 sizeof(req.data.limits.offload)); 884 } 885 886 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 887 log_err(1, "error issuing CTL_ISCSI ioctl; " 888 "dropping connection"); 889 } 890 891 if (req.status != CTL_ISCSI_OK) { 892 log_errx(1, "error returned from CTL iSCSI limits request: " 893 "%s; dropping connection", req.error_str); 894 } 895 896 *max_data_segment_length = req.data.limits.data_segment_limit; 897 if (offload != NULL) { 898 log_debugx("MaxRecvDataSegment kernel limit for offload " 899 "\"%s\" is %zd", offload, *max_data_segment_length); 900 } else { 901 log_debugx("MaxRecvDataSegment kernel limit is %zd", 902 *max_data_segment_length); 903 } 904} 905 906int 907kernel_port_add(struct port *port) 908{ 909 struct ctl_port_entry entry; 910 struct ctl_req req; 911 struct ctl_lun_map lm; 912 struct target *targ = port->p_target; 913 struct portal_group *pg = port->p_portal_group; 914 char tagstr[16]; 915 int error, i, n; 916 917 /* Create iSCSI port. */ 918 if (port->p_portal_group) { 919 bzero(&req, sizeof(req)); 920 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 921 req.reqtype = CTL_REQ_CREATE; 922 req.num_args = 5; 923 req.args = malloc(req.num_args * sizeof(*req.args)); 924 if (req.args == NULL) 925 log_err(1, "malloc"); 926 n = 0; 927 req.args[n].namelen = sizeof("port_id"); 928 req.args[n].name = __DECONST(char *, "port_id"); 929 req.args[n].vallen = sizeof(port->p_ctl_port); 930 req.args[n].value = &port->p_ctl_port; 931 req.args[n++].flags = CTL_BEARG_WR; 932 str_arg(&req.args[n++], "cfiscsi_target", targ->t_name); 933 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag); 934 str_arg(&req.args[n++], "cfiscsi_portal_group_tag", tagstr); 935 if (targ->t_alias) 936 str_arg(&req.args[n++], "cfiscsi_target_alias", targ->t_alias); 937 str_arg(&req.args[n++], "ctld_portal_group_name", pg->pg_name); 938 req.num_args = n; 939 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 940 free(req.args); 941 if (error != 0) { 942 log_warn("error issuing CTL_PORT_REQ ioctl"); 943 return (1); 944 } 945 if (req.status == CTL_LUN_ERROR) { 946 log_warnx("error returned from port creation request: %s", 947 req.error_str); 948 return (1); 949 } 950 if (req.status != CTL_LUN_OK) { 951 log_warnx("unknown port creation request status %d", 952 req.status); 953 return (1); 954 } 955 } else if (port->p_pport) { 956 port->p_ctl_port = port->p_pport->pp_ctl_port; 957 958 if (strncmp(targ->t_name, "naa.", 4) == 0 && 959 strlen(targ->t_name) == 20) { 960 bzero(&entry, sizeof(entry)); 961 entry.port_type = CTL_PORT_NONE; 962 entry.targ_port = port->p_ctl_port; 963 entry.flags |= CTL_PORT_WWNN_VALID; 964 entry.wwnn = strtoull(targ->t_name + 4, NULL, 16); 965 if (ioctl(ctl_fd, CTL_SET_PORT_WWNS, &entry) == -1) 966 log_warn("CTL_SET_PORT_WWNS ioctl failed"); 967 } 968 } 969 970 /* Explicitly enable mapping to block any access except allowed. */ 971 lm.port = port->p_ctl_port; 972 lm.plun = UINT32_MAX; 973 lm.lun = 0; 974 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 975 if (error != 0) 976 log_warn("CTL_LUN_MAP ioctl failed"); 977 978 /* Map configured LUNs */ 979 for (i = 0; i < MAX_LUNS; i++) { 980 if (targ->t_luns[i] == NULL) 981 continue; 982 lm.port = port->p_ctl_port; 983 lm.plun = i; 984 lm.lun = targ->t_luns[i]->l_ctl_lun; 985 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 986 if (error != 0) 987 log_warn("CTL_LUN_MAP ioctl failed"); 988 } 989 990 /* Enable port */ 991 bzero(&entry, sizeof(entry)); 992 entry.targ_port = port->p_ctl_port; 993 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 994 if (error != 0) { 995 log_warn("CTL_ENABLE_PORT ioctl failed"); 996 return (-1); 997 } 998 999 return (0); 1000} 1001 1002int 1003kernel_port_update(struct port *port) 1004{ 1005 struct ctl_lun_map lm; 1006 struct target *targ = port->p_target; 1007 int error, i; 1008 1009 /* Map configured LUNs and unmap others */ 1010 for (i = 0; i < MAX_LUNS; i++) { 1011 lm.port = port->p_ctl_port; 1012 lm.plun = i; 1013 if (targ->t_luns[i] == NULL) 1014 lm.lun = UINT32_MAX; 1015 else 1016 lm.lun = targ->t_luns[i]->l_ctl_lun; 1017 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1018 if (error != 0) 1019 log_warn("CTL_LUN_MAP ioctl failed"); 1020 } 1021 return (0); 1022} 1023 1024int 1025kernel_port_remove(struct port *port) 1026{ 1027 struct ctl_port_entry entry; 1028 struct ctl_lun_map lm; 1029 struct ctl_req req; 1030 char tagstr[16]; 1031 struct target *targ = port->p_target; 1032 struct portal_group *pg = port->p_portal_group; 1033 int error; 1034 1035 /* Disable port */ 1036 bzero(&entry, sizeof(entry)); 1037 entry.targ_port = port->p_ctl_port; 1038 error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry); 1039 if (error != 0) { 1040 log_warn("CTL_DISABLE_PORT ioctl failed"); 1041 return (-1); 1042 } 1043 1044 /* Remove iSCSI port. */ 1045 if (port->p_portal_group) { 1046 bzero(&req, sizeof(req)); 1047 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 1048 req.reqtype = CTL_REQ_REMOVE; 1049 req.num_args = 2; 1050 req.args = malloc(req.num_args * sizeof(*req.args)); 1051 if (req.args == NULL) 1052 log_err(1, "malloc"); 1053 str_arg(&req.args[0], "cfiscsi_target", targ->t_name); 1054 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag); 1055 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr); 1056 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 1057 free(req.args); 1058 if (error != 0) { 1059 log_warn("error issuing CTL_PORT_REQ ioctl"); 1060 return (1); 1061 } 1062 if (req.status == CTL_LUN_ERROR) { 1063 log_warnx("error returned from port removal request: %s", 1064 req.error_str); 1065 return (1); 1066 } 1067 if (req.status != CTL_LUN_OK) { 1068 log_warnx("unknown port removal request status %d", 1069 req.status); 1070 return (1); 1071 } 1072 } else { 1073 /* Disable LUN mapping. */ 1074 lm.port = port->p_ctl_port; 1075 lm.plun = UINT32_MAX; 1076 lm.lun = UINT32_MAX; 1077 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1078 if (error != 0) 1079 log_warn("CTL_LUN_MAP ioctl failed"); 1080 } 1081 return (0); 1082} 1083 1084#ifdef ICL_KERNEL_PROXY 1085void 1086kernel_listen(struct addrinfo *ai, bool iser, int portal_id) 1087{ 1088 struct ctl_iscsi req; 1089 1090 bzero(&req, sizeof(req)); 1091 1092 req.type = CTL_ISCSI_LISTEN; 1093 req.data.listen.iser = iser; 1094 req.data.listen.domain = ai->ai_family; 1095 req.data.listen.socktype = ai->ai_socktype; 1096 req.data.listen.protocol = ai->ai_protocol; 1097 req.data.listen.addr = ai->ai_addr; 1098 req.data.listen.addrlen = ai->ai_addrlen; 1099 req.data.listen.portal_id = portal_id; 1100 1101 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1102 log_err(1, "error issuing CTL_ISCSI ioctl"); 1103 1104 if (req.status != CTL_ISCSI_OK) { 1105 log_errx(1, "error returned from CTL iSCSI listen: %s", 1106 req.error_str); 1107 } 1108} 1109 1110void 1111kernel_accept(int *connection_id, int *portal_id, 1112 struct sockaddr *client_sa, socklen_t *client_salen) 1113{ 1114 struct ctl_iscsi req; 1115 struct sockaddr_storage ss; 1116 1117 bzero(&req, sizeof(req)); 1118 1119 req.type = CTL_ISCSI_ACCEPT; 1120 req.data.accept.initiator_addr = (struct sockaddr *)&ss; 1121 1122 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1123 log_err(1, "error issuing CTL_ISCSI ioctl"); 1124 1125 if (req.status != CTL_ISCSI_OK) { 1126 log_errx(1, "error returned from CTL iSCSI accept: %s", 1127 req.error_str); 1128 } 1129 1130 *connection_id = req.data.accept.connection_id; 1131 *portal_id = req.data.accept.portal_id; 1132 *client_salen = req.data.accept.initiator_addrlen; 1133 memcpy(client_sa, &ss, *client_salen); 1134} 1135 1136void 1137kernel_send(struct pdu *pdu) 1138{ 1139 struct ctl_iscsi req; 1140 1141 bzero(&req, sizeof(req)); 1142 1143 req.type = CTL_ISCSI_SEND; 1144 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 1145 req.data.send.bhs = pdu->pdu_bhs; 1146 req.data.send.data_segment_len = pdu->pdu_data_len; 1147 req.data.send.data_segment = pdu->pdu_data; 1148 1149 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1150 log_err(1, "error issuing CTL_ISCSI ioctl; " 1151 "dropping connection"); 1152 } 1153 1154 if (req.status != CTL_ISCSI_OK) { 1155 log_errx(1, "error returned from CTL iSCSI send: " 1156 "%s; dropping connection", req.error_str); 1157 } 1158} 1159 1160void 1161kernel_receive(struct pdu *pdu) 1162{ 1163 struct ctl_iscsi req; 1164 1165 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH); 1166 if (pdu->pdu_data == NULL) 1167 log_err(1, "malloc"); 1168 1169 bzero(&req, sizeof(req)); 1170 1171 req.type = CTL_ISCSI_RECEIVE; 1172 req.data.receive.connection_id = pdu->pdu_connection->conn_socket; 1173 req.data.receive.bhs = pdu->pdu_bhs; 1174 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH; 1175 req.data.receive.data_segment = pdu->pdu_data; 1176 1177 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1178 log_err(1, "error issuing CTL_ISCSI ioctl; " 1179 "dropping connection"); 1180 } 1181 1182 if (req.status != CTL_ISCSI_OK) { 1183 log_errx(1, "error returned from CTL iSCSI receive: " 1184 "%s; dropping connection", req.error_str); 1185 } 1186 1187} 1188 1189#endif /* ICL_KERNEL_PROXY */ 1190 1191/* 1192 * XXX: I CANT INTO LATIN 1193 */ 1194void 1195kernel_capsicate(void) 1196{ 1197 int error; 1198 cap_rights_t rights; 1199 const unsigned long cmds[] = { CTL_ISCSI }; 1200 1201 cap_rights_init(&rights, CAP_IOCTL); 1202 error = cap_rights_limit(ctl_fd, &rights); 1203 if (error != 0 && errno != ENOSYS) 1204 log_err(1, "cap_rights_limit"); 1205 1206 error = cap_ioctls_limit(ctl_fd, cmds, 1207 sizeof(cmds) / sizeof(cmds[0])); 1208 if (error != 0 && errno != ENOSYS) 1209 log_err(1, "cap_ioctls_limit"); 1210 1211 error = cap_enter(); 1212 if (error != 0 && errno != ENOSYS) 1213 log_err(1, "cap_enter"); 1214 1215 if (cap_sandboxed()) 1216 log_debugx("Capsicum capability mode enabled"); 1217 else 1218 log_warnx("Capsicum capability mode not supported"); 1219} 1220 1221