kernel.c revision 268291
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 * $FreeBSD: head/usr.sbin/ctld/kernel.c 268291 2014-07-05 18:15:00Z mav $ 36 */ 37 38#include <sys/ioctl.h> 39#include <sys/types.h> 40#include <sys/stat.h> 41#include <sys/param.h> 42#include <sys/linker.h> 43#include <sys/queue.h> 44#include <sys/callout.h> 45#include <sys/sbuf.h> 46#include <sys/capsicum.h> 47#include <assert.h> 48#include <bsdxml.h> 49#include <ctype.h> 50#include <errno.h> 51#include <fcntl.h> 52#include <stdint.h> 53#include <stdio.h> 54#include <stdlib.h> 55#include <string.h> 56#include <strings.h> 57#include <cam/scsi/scsi_all.h> 58#include <cam/scsi/scsi_message.h> 59#include <cam/ctl/ctl.h> 60#include <cam/ctl/ctl_io.h> 61#include <cam/ctl/ctl_frontend_internal.h> 62#include <cam/ctl/ctl_backend.h> 63#include <cam/ctl/ctl_ioctl.h> 64#include <cam/ctl/ctl_backend_block.h> 65#include <cam/ctl/ctl_util.h> 66#include <cam/ctl/ctl_scsi_all.h> 67 68#include "ctld.h" 69 70#ifdef ICL_KERNEL_PROXY 71#include <netdb.h> 72#endif 73 74extern bool proxy_mode; 75 76static int ctl_fd = 0; 77 78void 79kernel_init(void) 80{ 81 int retval, saved_errno; 82 83 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 84 if (ctl_fd < 0 && errno == ENOENT) { 85 saved_errno = errno; 86 retval = kldload("ctl"); 87 if (retval != -1) 88 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 89 else 90 errno = saved_errno; 91 } 92 if (ctl_fd < 0) 93 log_err(1, "failed to open %s", CTL_DEFAULT_DEV); 94} 95 96/* 97 * Name/value pair used for per-LUN attributes. 98 */ 99struct cctl_lun_nv { 100 char *name; 101 char *value; 102 STAILQ_ENTRY(cctl_lun_nv) links; 103}; 104 105/* 106 * Backend LUN information. 107 */ 108struct cctl_lun { 109 uint64_t lun_id; 110 char *backend_type; 111 uint64_t size_blocks; 112 uint32_t blocksize; 113 char *serial_number; 114 char *device_id; 115 char *cfiscsi_target; 116 char *cfiscsi_target_alias; 117 int cfiscsi_lun; 118 STAILQ_HEAD(,cctl_lun_nv) attr_list; 119 STAILQ_ENTRY(cctl_lun) links; 120}; 121 122struct cctl_port { 123 uint32_t port_id; 124 char *cfiscsi_target; 125 uint16_t cfiscsi_portal_group_tag; 126 STAILQ_HEAD(,cctl_lun_nv) attr_list; 127 STAILQ_ENTRY(cctl_port) links; 128}; 129 130struct cctl_devlist_data { 131 int num_luns; 132 STAILQ_HEAD(,cctl_lun) lun_list; 133 struct cctl_lun *cur_lun; 134 int num_ports; 135 STAILQ_HEAD(,cctl_port) port_list; 136 struct cctl_port *cur_port; 137 int level; 138 struct sbuf *cur_sb[32]; 139}; 140 141static void 142cctl_start_element(void *user_data, const char *name, const char **attr) 143{ 144 int i; 145 struct cctl_devlist_data *devlist; 146 struct cctl_lun *cur_lun; 147 148 devlist = (struct cctl_devlist_data *)user_data; 149 cur_lun = devlist->cur_lun; 150 devlist->level++; 151 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 152 sizeof(devlist->cur_sb[0]))) 153 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 154 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 155 156 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 157 if (devlist->cur_sb[devlist->level] == NULL) 158 log_err(1, "%s: unable to allocate sbuf", __func__); 159 160 if (strcmp(name, "lun") == 0) { 161 if (cur_lun != NULL) 162 log_errx(1, "%s: improper lun element nesting", 163 __func__); 164 165 cur_lun = calloc(1, sizeof(*cur_lun)); 166 if (cur_lun == NULL) 167 log_err(1, "%s: cannot allocate %zd bytes", __func__, 168 sizeof(*cur_lun)); 169 170 devlist->num_luns++; 171 devlist->cur_lun = cur_lun; 172 173 STAILQ_INIT(&cur_lun->attr_list); 174 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links); 175 176 for (i = 0; attr[i] != NULL; i += 2) { 177 if (strcmp(attr[i], "id") == 0) { 178 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0); 179 } else { 180 log_errx(1, "%s: invalid LUN attribute %s = %s", 181 __func__, attr[i], attr[i+1]); 182 } 183 } 184 } 185} 186 187static void 188cctl_end_element(void *user_data, const char *name) 189{ 190 struct cctl_devlist_data *devlist; 191 struct cctl_lun *cur_lun; 192 char *str; 193 194 devlist = (struct cctl_devlist_data *)user_data; 195 cur_lun = devlist->cur_lun; 196 197 if ((cur_lun == NULL) 198 && (strcmp(name, "ctllunlist") != 0)) 199 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name); 200 201 if (devlist->cur_sb[devlist->level] == NULL) 202 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 203 devlist->level, name); 204 205 sbuf_finish(devlist->cur_sb[devlist->level]); 206 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 207 208 if (strlen(str) == 0) { 209 free(str); 210 str = NULL; 211 } 212 213 sbuf_delete(devlist->cur_sb[devlist->level]); 214 devlist->cur_sb[devlist->level] = NULL; 215 devlist->level--; 216 217 if (strcmp(name, "backend_type") == 0) { 218 cur_lun->backend_type = str; 219 str = NULL; 220 } else if (strcmp(name, "size") == 0) { 221 cur_lun->size_blocks = strtoull(str, NULL, 0); 222 } else if (strcmp(name, "blocksize") == 0) { 223 cur_lun->blocksize = strtoul(str, NULL, 0); 224 } else if (strcmp(name, "serial_number") == 0) { 225 cur_lun->serial_number = str; 226 str = NULL; 227 } else if (strcmp(name, "device_id") == 0) { 228 cur_lun->device_id = str; 229 str = NULL; 230 } else if (strcmp(name, "cfiscsi_target") == 0) { 231 cur_lun->cfiscsi_target = str; 232 str = NULL; 233 } else if (strcmp(name, "cfiscsi_target_alias") == 0) { 234 cur_lun->cfiscsi_target_alias = str; 235 str = NULL; 236 } else if (strcmp(name, "cfiscsi_lun") == 0) { 237 cur_lun->cfiscsi_lun = strtoul(str, NULL, 0); 238 } else if (strcmp(name, "lun") == 0) { 239 devlist->cur_lun = NULL; 240 } else if (strcmp(name, "ctllunlist") == 0) { 241 242 } else { 243 struct cctl_lun_nv *nv; 244 245 nv = calloc(1, sizeof(*nv)); 246 if (nv == NULL) 247 log_err(1, "%s: can't allocate %zd bytes for nv pair", 248 __func__, sizeof(*nv)); 249 250 nv->name = checked_strdup(name); 251 252 nv->value = str; 253 str = NULL; 254 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links); 255 } 256 257 free(str); 258} 259 260static void 261cctl_start_pelement(void *user_data, const char *name, const char **attr) 262{ 263 int i; 264 struct cctl_devlist_data *devlist; 265 struct cctl_port *cur_port; 266 267 devlist = (struct cctl_devlist_data *)user_data; 268 cur_port = devlist->cur_port; 269 devlist->level++; 270 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 271 sizeof(devlist->cur_sb[0]))) 272 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 273 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 274 275 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 276 if (devlist->cur_sb[devlist->level] == NULL) 277 log_err(1, "%s: unable to allocate sbuf", __func__); 278 279 if (strcmp(name, "targ_port") == 0) { 280 if (cur_port != NULL) 281 log_errx(1, "%s: improper port element nesting (%s)", 282 __func__, name); 283 284 cur_port = calloc(1, sizeof(*cur_port)); 285 if (cur_port == NULL) 286 log_err(1, "%s: cannot allocate %zd bytes", __func__, 287 sizeof(*cur_port)); 288 289 devlist->num_ports++; 290 devlist->cur_port = cur_port; 291 292 STAILQ_INIT(&cur_port->attr_list); 293 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links); 294 295 for (i = 0; attr[i] != NULL; i += 2) { 296 if (strcmp(attr[i], "id") == 0) { 297 cur_port->port_id = strtoul(attr[i+1], NULL, 0); 298 } else { 299 log_errx(1, "%s: invalid LUN attribute %s = %s", 300 __func__, attr[i], attr[i+1]); 301 } 302 } 303 } 304} 305 306static void 307cctl_end_pelement(void *user_data, const char *name) 308{ 309 struct cctl_devlist_data *devlist; 310 struct cctl_port *cur_port; 311 char *str; 312 313 devlist = (struct cctl_devlist_data *)user_data; 314 cur_port = devlist->cur_port; 315 316 if ((cur_port == NULL) 317 && (strcmp(name, "ctlportlist") != 0)) 318 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name); 319 320 if (devlist->cur_sb[devlist->level] == NULL) 321 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 322 devlist->level, name); 323 324 sbuf_finish(devlist->cur_sb[devlist->level]); 325 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 326 327 if (strlen(str) == 0) { 328 free(str); 329 str = NULL; 330 } 331 332 sbuf_delete(devlist->cur_sb[devlist->level]); 333 devlist->cur_sb[devlist->level] = NULL; 334 devlist->level--; 335 336 if (strcmp(name, "cfiscsi_target") == 0) { 337 cur_port->cfiscsi_target = str; 338 str = NULL; 339 } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) { 340 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0); 341 } else if (strcmp(name, "targ_port") == 0) { 342 devlist->cur_port = NULL; 343 } else if (strcmp(name, "ctlportlist") == 0) { 344 345 } else { 346 struct cctl_lun_nv *nv; 347 348 nv = calloc(1, sizeof(*nv)); 349 if (nv == NULL) 350 log_err(1, "%s: can't allocate %zd bytes for nv pair", 351 __func__, sizeof(*nv)); 352 353 nv->name = checked_strdup(name); 354 355 nv->value = str; 356 str = NULL; 357 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links); 358 } 359 360 free(str); 361} 362 363static void 364cctl_char_handler(void *user_data, const XML_Char *str, int len) 365{ 366 struct cctl_devlist_data *devlist; 367 368 devlist = (struct cctl_devlist_data *)user_data; 369 370 sbuf_bcat(devlist->cur_sb[devlist->level], str, len); 371} 372 373struct conf * 374conf_new_from_kernel(void) 375{ 376 struct conf *conf = NULL; 377 struct target *targ; 378 struct lun *cl; 379 struct lun_option *lo; 380 struct ctl_lun_list list; 381 struct cctl_devlist_data devlist; 382 struct cctl_lun *lun; 383 struct cctl_port *port; 384 XML_Parser parser; 385 char *str; 386 int len, retval; 387 388 bzero(&devlist, sizeof(devlist)); 389 STAILQ_INIT(&devlist.lun_list); 390 STAILQ_INIT(&devlist.port_list); 391 392 log_debugx("obtaining previously configured CTL luns from the kernel"); 393 394 str = NULL; 395 len = 4096; 396retry: 397 str = realloc(str, len); 398 if (str == NULL) 399 log_err(1, "realloc"); 400 401 bzero(&list, sizeof(list)); 402 list.alloc_len = len; 403 list.status = CTL_LUN_LIST_NONE; 404 list.lun_xml = str; 405 406 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) { 407 log_warn("error issuing CTL_LUN_LIST ioctl"); 408 free(str); 409 return (NULL); 410 } 411 412 if (list.status == CTL_LUN_LIST_ERROR) { 413 log_warnx("error returned from CTL_LUN_LIST ioctl: %s", 414 list.error_str); 415 free(str); 416 return (NULL); 417 } 418 419 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 420 len = len << 1; 421 goto retry; 422 } 423 424 parser = XML_ParserCreate(NULL); 425 if (parser == NULL) { 426 log_warnx("unable to create XML parser"); 427 free(str); 428 return (NULL); 429 } 430 431 XML_SetUserData(parser, &devlist); 432 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element); 433 XML_SetCharacterDataHandler(parser, cctl_char_handler); 434 435 retval = XML_Parse(parser, str, strlen(str), 1); 436 XML_ParserFree(parser); 437 free(str); 438 if (retval != 1) { 439 log_warnx("XML_Parse failed"); 440 return (NULL); 441 } 442 443 str = NULL; 444 len = 4096; 445retry_port: 446 str = realloc(str, len); 447 if (str == NULL) 448 log_err(1, "realloc"); 449 450 bzero(&list, sizeof(list)); 451 list.alloc_len = len; 452 list.status = CTL_LUN_LIST_NONE; 453 list.lun_xml = str; 454 455 if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) { 456 log_warn("error issuing CTL_PORT_LIST ioctl"); 457 free(str); 458 return (NULL); 459 } 460 461 if (list.status == CTL_PORT_LIST_ERROR) { 462 log_warnx("error returned from CTL_PORT_LIST ioctl: %s", 463 list.error_str); 464 free(str); 465 return (NULL); 466 } 467 468 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 469 len = len << 1; 470 goto retry_port; 471 } 472 473 parser = XML_ParserCreate(NULL); 474 if (parser == NULL) { 475 log_warnx("unable to create XML parser"); 476 free(str); 477 return (NULL); 478 } 479 480 XML_SetUserData(parser, &devlist); 481 XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement); 482 XML_SetCharacterDataHandler(parser, cctl_char_handler); 483 484 retval = XML_Parse(parser, str, strlen(str), 1); 485 XML_ParserFree(parser); 486 free(str); 487 if (retval != 1) { 488 log_warnx("XML_Parse failed"); 489 return (NULL); 490 } 491 492 conf = conf_new(); 493 494 STAILQ_FOREACH(port, &devlist.port_list, links) { 495 496 if (port->cfiscsi_target == NULL) { 497 log_debugx("CTL port %ju wasn't managed by ctld; " 498 "ignoring", (uintmax_t)port->port_id); 499 continue; 500 } 501 502 targ = target_find(conf, port->cfiscsi_target); 503 if (targ == NULL) { 504#if 0 505 log_debugx("found new kernel target %s for CTL port %ld", 506 port->cfiscsi_target, port->port_id); 507#endif 508 targ = target_new(conf, port->cfiscsi_target); 509 if (targ == NULL) { 510 log_warnx("target_new failed"); 511 continue; 512 } 513 } 514 } 515 516 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 517 struct cctl_lun_nv *nv; 518 519 if (lun->cfiscsi_target == NULL) { 520 log_debugx("CTL lun %ju wasn't managed by ctld; " 521 "ignoring", (uintmax_t)lun->lun_id); 522 continue; 523 } 524 525 targ = target_find(conf, lun->cfiscsi_target); 526 if (targ == NULL) { 527#if 0 528 log_debugx("found new kernel target %s for CTL lun %ld", 529 lun->cfiscsi_target, lun->lun_id); 530#endif 531 targ = target_new(conf, lun->cfiscsi_target); 532 if (targ == NULL) { 533 log_warnx("target_new failed"); 534 continue; 535 } 536 } 537 538 cl = lun_find(targ, lun->cfiscsi_lun); 539 if (cl != NULL) { 540 log_warnx("found CTL lun %ju, backing lun %d, target " 541 "%s, also backed by CTL lun %d; ignoring", 542 (uintmax_t) lun->lun_id, cl->l_lun, 543 cl->l_target->t_name, cl->l_ctl_lun); 544 continue; 545 } 546 547 log_debugx("found CTL lun %ju, backing lun %d, target %s", 548 (uintmax_t)lun->lun_id, lun->cfiscsi_lun, lun->cfiscsi_target); 549 550 cl = lun_new(targ, lun->cfiscsi_lun); 551 if (cl == NULL) { 552 log_warnx("lun_new failed"); 553 continue; 554 } 555 lun_set_backend(cl, lun->backend_type); 556 lun_set_blocksize(cl, lun->blocksize); 557 lun_set_device_id(cl, lun->device_id); 558 lun_set_serial(cl, lun->serial_number); 559 lun_set_size(cl, lun->size_blocks * cl->l_blocksize); 560 lun_set_ctl_lun(cl, lun->lun_id); 561 562 STAILQ_FOREACH(nv, &lun->attr_list, links) { 563 if (strcmp(nv->name, "file") == 0 || 564 strcmp(nv->name, "dev") == 0) { 565 lun_set_path(cl, nv->value); 566 continue; 567 } 568 lo = lun_option_new(cl, nv->name, nv->value); 569 if (lo == NULL) 570 log_warnx("unable to add CTL lun option %s " 571 "for CTL lun %ju for lun %d, target %s", 572 nv->name, (uintmax_t) lun->lun_id, 573 cl->l_lun, cl->l_target->t_name); 574 } 575 } 576 577 return (conf); 578} 579 580static void 581str_arg(struct ctl_be_arg *arg, const char *name, const char *value) 582{ 583 584 arg->namelen = strlen(name) + 1; 585 arg->name = __DECONST(char *, name); 586 arg->vallen = strlen(value) + 1; 587 arg->value = __DECONST(char *, value); 588 arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD; 589} 590 591int 592kernel_lun_add(struct lun *lun) 593{ 594 struct lun_option *lo; 595 struct ctl_lun_req req; 596 char *tmp; 597 int error, i, num_options; 598 599 bzero(&req, sizeof(req)); 600 601 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 602 req.reqtype = CTL_LUNREQ_CREATE; 603 604 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 605 606 if (lun->l_size != 0) 607 req.reqdata.create.lun_size_bytes = lun->l_size; 608 609 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 610 req.reqdata.create.device_type = T_DIRECT; 611 612 if (lun->l_serial != NULL) { 613 strncpy(req.reqdata.create.serial_num, lun->l_serial, 614 sizeof(req.reqdata.create.serial_num)); 615 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 616 } 617 618 if (lun->l_device_id != NULL) { 619 strncpy(req.reqdata.create.device_id, lun->l_device_id, 620 sizeof(req.reqdata.create.device_id)); 621 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 622 } 623 624 if (lun->l_path != NULL) { 625 lo = lun_option_find(lun, "file"); 626 if (lo != NULL) { 627 lun_option_set(lo, lun->l_path); 628 } else { 629 lo = lun_option_new(lun, "file", lun->l_path); 630 assert(lo != NULL); 631 } 632 } 633 634 lo = lun_option_find(lun, "cfiscsi_target"); 635 if (lo != NULL) { 636 lun_option_set(lo, lun->l_target->t_name); 637 } else { 638 lo = lun_option_new(lun, "cfiscsi_target", 639 lun->l_target->t_name); 640 assert(lo != NULL); 641 } 642 643 if (lun->l_target->t_alias != NULL) { 644 lo = lun_option_find(lun, "cfiscsi_target_alias"); 645 if (lo != NULL) { 646 lun_option_set(lo, lun->l_target->t_alias); 647 } else { 648 lo = lun_option_new(lun, "cfiscsi_target_alias", 649 lun->l_target->t_alias); 650 assert(lo != NULL); 651 } 652 } 653 654 asprintf(&tmp, "%d", lun->l_lun); 655 if (tmp == NULL) 656 log_errx(1, "asprintf"); 657 lo = lun_option_find(lun, "cfiscsi_lun"); 658 if (lo != NULL) { 659 lun_option_set(lo, tmp); 660 free(tmp); 661 } else { 662 lo = lun_option_new(lun, "cfiscsi_lun", tmp); 663 free(tmp); 664 assert(lo != NULL); 665 } 666 667 num_options = 0; 668 TAILQ_FOREACH(lo, &lun->l_options, lo_next) 669 num_options++; 670 671 req.num_be_args = num_options; 672 if (num_options > 0) { 673 req.be_args = malloc(num_options * sizeof(*req.be_args)); 674 if (req.be_args == NULL) { 675 log_warn("error allocating %zd bytes", 676 num_options * sizeof(*req.be_args)); 677 return (1); 678 } 679 680 i = 0; 681 TAILQ_FOREACH(lo, &lun->l_options, lo_next) { 682 str_arg(&req.be_args[i], lo->lo_name, lo->lo_value); 683 i++; 684 } 685 assert(i == num_options); 686 } 687 688 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 689 free(req.be_args); 690 if (error != 0) { 691 log_warn("error issuing CTL_LUN_REQ ioctl"); 692 return (1); 693 } 694 695 if (req.status == CTL_LUN_ERROR) { 696 log_warnx("error returned from LUN creation request: %s", 697 req.error_str); 698 return (1); 699 } 700 701 if (req.status != CTL_LUN_OK) { 702 log_warnx("unknown LUN creation request status %d", 703 req.status); 704 return (1); 705 } 706 707 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id); 708 709 return (0); 710} 711 712int 713kernel_lun_resize(struct lun *lun) 714{ 715 struct ctl_lun_req req; 716 717 bzero(&req, sizeof(req)); 718 719 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 720 req.reqtype = CTL_LUNREQ_MODIFY; 721 722 req.reqdata.modify.lun_id = lun->l_ctl_lun; 723 req.reqdata.modify.lun_size_bytes = lun->l_size; 724 725 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 726 log_warn("error issuing CTL_LUN_REQ ioctl"); 727 return (1); 728 } 729 730 if (req.status == CTL_LUN_ERROR) { 731 log_warnx("error returned from LUN modification request: %s", 732 req.error_str); 733 return (1); 734 } 735 736 if (req.status != CTL_LUN_OK) { 737 log_warnx("unknown LUN modification request status %d", 738 req.status); 739 return (1); 740 } 741 742 return (0); 743} 744 745int 746kernel_lun_remove(struct lun *lun) 747{ 748 struct ctl_lun_req req; 749 750 bzero(&req, sizeof(req)); 751 752 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 753 req.reqtype = CTL_LUNREQ_RM; 754 755 req.reqdata.rm.lun_id = lun->l_ctl_lun; 756 757 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 758 log_warn("error issuing CTL_LUN_REQ ioctl"); 759 return (1); 760 } 761 762 if (req.status == CTL_LUN_ERROR) { 763 log_warnx("error returned from LUN removal request: %s", 764 req.error_str); 765 return (1); 766 } 767 768 if (req.status != CTL_LUN_OK) { 769 log_warnx("unknown LUN removal request status %d", req.status); 770 return (1); 771 } 772 773 return (0); 774} 775 776void 777kernel_handoff(struct connection *conn) 778{ 779 struct ctl_iscsi req; 780 781 bzero(&req, sizeof(req)); 782 783 req.type = CTL_ISCSI_HANDOFF; 784 strlcpy(req.data.handoff.initiator_name, 785 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 786 strlcpy(req.data.handoff.initiator_addr, 787 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 788 if (conn->conn_initiator_alias != NULL) { 789 strlcpy(req.data.handoff.initiator_alias, 790 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 791 } 792 strlcpy(req.data.handoff.target_name, 793 conn->conn_target->t_name, sizeof(req.data.handoff.target_name)); 794#ifdef ICL_KERNEL_PROXY 795 if (proxy_mode) 796 req.data.handoff.connection_id = conn->conn_socket; 797 else 798 req.data.handoff.socket = conn->conn_socket; 799#else 800 req.data.handoff.socket = conn->conn_socket; 801#endif 802 req.data.handoff.portal_group_tag = 803 conn->conn_portal->p_portal_group->pg_tag; 804 if (conn->conn_header_digest == CONN_DIGEST_CRC32C) 805 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 806 if (conn->conn_data_digest == CONN_DIGEST_CRC32C) 807 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 808 req.data.handoff.cmdsn = conn->conn_cmdsn; 809 req.data.handoff.statsn = conn->conn_statsn; 810 req.data.handoff.max_recv_data_segment_length = 811 conn->conn_max_data_segment_length; 812 req.data.handoff.max_burst_length = conn->conn_max_burst_length; 813 req.data.handoff.immediate_data = conn->conn_immediate_data; 814 815 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 816 log_err(1, "error issuing CTL_ISCSI ioctl; " 817 "dropping connection"); 818 } 819 820 if (req.status != CTL_ISCSI_OK) { 821 log_errx(1, "error returned from CTL iSCSI handoff request: " 822 "%s; dropping connection", req.error_str); 823 } 824} 825 826int 827kernel_port_add(struct target *targ) 828{ 829 struct ctl_port_entry entry; 830 struct ctl_req req; 831 char tagstr[16]; 832 int error; 833 uint32_t port_id = -1; 834 835 bzero(&req, sizeof(req)); 836 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 837 req.reqtype = CTL_REQ_CREATE; 838 req.num_args = 4; 839 req.args = malloc(req.num_args * sizeof(*req.args)); 840 req.args[0].namelen = sizeof("port_id"); 841 req.args[0].name = __DECONST(char *, "port_id"); 842 req.args[0].vallen = sizeof(port_id); 843 req.args[0].value = &port_id; 844 req.args[0].flags = CTL_BEARG_WR; 845 str_arg(&req.args[1], "cfiscsi_target", targ->t_name); 846 str_arg(&req.args[2], "cfiscsi_target_alias", targ->t_alias); 847 snprintf(tagstr, sizeof(tagstr), "%d", targ->t_portal_group->pg_tag); 848 str_arg(&req.args[3], "cfiscsi_portal_group_tag", tagstr); 849 850 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 851 free(req.args); 852 if (error != 0) { 853 log_warn("error issuing CTL_PORT_REQ ioctl"); 854 return (1); 855 } 856 857 if (req.status == CTL_LUN_ERROR) { 858 log_warnx("error returned from port creation request: %s", 859 req.error_str); 860 return (1); 861 } 862 863 if (req.status != CTL_LUN_OK) { 864 log_warnx("unknown port creation request status %d", 865 req.status); 866 return (1); 867 } 868 869 bzero(&entry, sizeof(entry)); 870 entry.targ_port = port_id; 871 872 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 873 if (error != 0) { 874 log_warn("CTL_ENABLE_PORT ioctl failed"); 875 return (-1); 876 } 877 878 return (0); 879} 880 881int 882kernel_port_remove(struct target *targ) 883{ 884 struct ctl_req req; 885 char tagstr[16]; 886 int error; 887 888 bzero(&req, sizeof(req)); 889 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 890 req.reqtype = CTL_REQ_REMOVE; 891 req.num_args = 2; 892 req.args = malloc(req.num_args * sizeof(*req.args)); 893 str_arg(&req.args[0], "cfiscsi_target", targ->t_name); 894 if (targ->t_portal_group) { 895 snprintf(tagstr, sizeof(tagstr), "%d", 896 targ->t_portal_group->pg_tag); 897 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr); 898 } else 899 req.num_args--; 900 901 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 902 free(req.args); 903 if (error != 0) { 904 log_warn("error issuing CTL_PORT_REQ ioctl"); 905 return (1); 906 } 907 908 if (req.status == CTL_LUN_ERROR) { 909 log_warnx("error returned from port removal request: %s", 910 req.error_str); 911 return (1); 912 } 913 914 if (req.status != CTL_LUN_OK) { 915 log_warnx("unknown port removal request status %d", 916 req.status); 917 return (1); 918 } 919 920 return (0); 921} 922 923#ifdef ICL_KERNEL_PROXY 924void 925kernel_listen(struct addrinfo *ai, bool iser, int portal_id) 926{ 927 struct ctl_iscsi req; 928 929 bzero(&req, sizeof(req)); 930 931 req.type = CTL_ISCSI_LISTEN; 932 req.data.listen.iser = iser; 933 req.data.listen.domain = ai->ai_family; 934 req.data.listen.socktype = ai->ai_socktype; 935 req.data.listen.protocol = ai->ai_protocol; 936 req.data.listen.addr = ai->ai_addr; 937 req.data.listen.addrlen = ai->ai_addrlen; 938 req.data.listen.portal_id = portal_id; 939 940 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 941 log_err(1, "error issuing CTL_ISCSI ioctl"); 942 943 if (req.status != CTL_ISCSI_OK) { 944 log_errx(1, "error returned from CTL iSCSI listen: %s", 945 req.error_str); 946 } 947} 948 949void 950kernel_accept(int *connection_id, int *portal_id, 951 struct sockaddr *client_sa, socklen_t *client_salen) 952{ 953 struct ctl_iscsi req; 954 struct sockaddr_storage ss; 955 956 bzero(&req, sizeof(req)); 957 958 req.type = CTL_ISCSI_ACCEPT; 959 req.data.accept.initiator_addr = (struct sockaddr *)&ss; 960 961 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 962 log_err(1, "error issuing CTL_ISCSI ioctl"); 963 964 if (req.status != CTL_ISCSI_OK) { 965 log_errx(1, "error returned from CTL iSCSI accept: %s", 966 req.error_str); 967 } 968 969 *connection_id = req.data.accept.connection_id; 970 *portal_id = req.data.accept.portal_id; 971 *client_salen = req.data.accept.initiator_addrlen; 972 memcpy(client_sa, &ss, *client_salen); 973} 974 975void 976kernel_send(struct pdu *pdu) 977{ 978 struct ctl_iscsi req; 979 980 bzero(&req, sizeof(req)); 981 982 req.type = CTL_ISCSI_SEND; 983 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 984 req.data.send.bhs = pdu->pdu_bhs; 985 req.data.send.data_segment_len = pdu->pdu_data_len; 986 req.data.send.data_segment = pdu->pdu_data; 987 988 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 989 log_err(1, "error issuing CTL_ISCSI ioctl; " 990 "dropping connection"); 991 } 992 993 if (req.status != CTL_ISCSI_OK) { 994 log_errx(1, "error returned from CTL iSCSI send: " 995 "%s; dropping connection", req.error_str); 996 } 997} 998 999void 1000kernel_receive(struct pdu *pdu) 1001{ 1002 struct ctl_iscsi req; 1003 1004 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH); 1005 if (pdu->pdu_data == NULL) 1006 log_err(1, "malloc"); 1007 1008 bzero(&req, sizeof(req)); 1009 1010 req.type = CTL_ISCSI_RECEIVE; 1011 req.data.receive.connection_id = pdu->pdu_connection->conn_socket; 1012 req.data.receive.bhs = pdu->pdu_bhs; 1013 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH; 1014 req.data.receive.data_segment = pdu->pdu_data; 1015 1016 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1017 log_err(1, "error issuing CTL_ISCSI ioctl; " 1018 "dropping connection"); 1019 } 1020 1021 if (req.status != CTL_ISCSI_OK) { 1022 log_errx(1, "error returned from CTL iSCSI receive: " 1023 "%s; dropping connection", req.error_str); 1024 } 1025 1026} 1027 1028#endif /* ICL_KERNEL_PROXY */ 1029 1030/* 1031 * XXX: I CANT INTO LATIN 1032 */ 1033void 1034kernel_capsicate(void) 1035{ 1036 int error; 1037 cap_rights_t rights; 1038 const unsigned long cmds[] = { CTL_ISCSI }; 1039 1040 cap_rights_init(&rights, CAP_IOCTL); 1041 error = cap_rights_limit(ctl_fd, &rights); 1042 if (error != 0 && errno != ENOSYS) 1043 log_err(1, "cap_rights_limit"); 1044 1045 error = cap_ioctls_limit(ctl_fd, cmds, 1046 sizeof(cmds) / sizeof(cmds[0])); 1047 if (error != 0 && errno != ENOSYS) 1048 log_err(1, "cap_ioctls_limit"); 1049 1050 error = cap_enter(); 1051 if (error != 0 && errno != ENOSYS) 1052 log_err(1, "cap_enter"); 1053 1054 if (cap_sandboxed()) 1055 log_debugx("Capsicum capability mode enabled"); 1056 else 1057 log_warnx("Capsicum capability mode not supported"); 1058} 1059 1060