kernel.c revision 272911
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 272911 2014-10-10 19:41:09Z 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_frontend_internal.h> 64#include <cam/ctl/ctl_backend.h> 65#include <cam/ctl/ctl_ioctl.h> 66#include <cam/ctl/ctl_backend_block.h> 67#include <cam/ctl/ctl_util.h> 68#include <cam/ctl/ctl_scsi_all.h> 69 70#include "ctld.h" 71 72#ifdef ICL_KERNEL_PROXY 73#include <netdb.h> 74#endif 75 76extern bool proxy_mode; 77 78static int ctl_fd = 0; 79 80void 81kernel_init(void) 82{ 83 int retval, saved_errno; 84 85 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 86 if (ctl_fd < 0 && errno == ENOENT) { 87 saved_errno = errno; 88 retval = kldload("ctl"); 89 if (retval != -1) 90 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 91 else 92 errno = saved_errno; 93 } 94 if (ctl_fd < 0) 95 log_err(1, "failed to open %s", CTL_DEFAULT_DEV); 96} 97 98/* 99 * Name/value pair used for per-LUN attributes. 100 */ 101struct cctl_lun_nv { 102 char *name; 103 char *value; 104 STAILQ_ENTRY(cctl_lun_nv) links; 105}; 106 107/* 108 * Backend LUN information. 109 */ 110struct cctl_lun { 111 uint64_t lun_id; 112 char *backend_type; 113 uint64_t size_blocks; 114 uint32_t blocksize; 115 char *serial_number; 116 char *device_id; 117 char *cfiscsi_target; 118 int cfiscsi_lun; 119 STAILQ_HEAD(,cctl_lun_nv) attr_list; 120 STAILQ_ENTRY(cctl_lun) links; 121}; 122 123struct cctl_port { 124 uint32_t port_id; 125 int cfiscsi_status; 126 char *cfiscsi_target; 127 uint16_t cfiscsi_portal_group_tag; 128 STAILQ_HEAD(,cctl_lun_nv) attr_list; 129 STAILQ_ENTRY(cctl_port) links; 130}; 131 132struct cctl_devlist_data { 133 int num_luns; 134 STAILQ_HEAD(,cctl_lun) lun_list; 135 struct cctl_lun *cur_lun; 136 int num_ports; 137 STAILQ_HEAD(,cctl_port) port_list; 138 struct cctl_port *cur_port; 139 int level; 140 struct sbuf *cur_sb[32]; 141}; 142 143static void 144cctl_start_element(void *user_data, const char *name, const char **attr) 145{ 146 int i; 147 struct cctl_devlist_data *devlist; 148 struct cctl_lun *cur_lun; 149 150 devlist = (struct cctl_devlist_data *)user_data; 151 cur_lun = devlist->cur_lun; 152 devlist->level++; 153 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 154 sizeof(devlist->cur_sb[0]))) 155 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 156 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 157 158 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 159 if (devlist->cur_sb[devlist->level] == NULL) 160 log_err(1, "%s: unable to allocate sbuf", __func__); 161 162 if (strcmp(name, "lun") == 0) { 163 if (cur_lun != NULL) 164 log_errx(1, "%s: improper lun element nesting", 165 __func__); 166 167 cur_lun = calloc(1, sizeof(*cur_lun)); 168 if (cur_lun == NULL) 169 log_err(1, "%s: cannot allocate %zd bytes", __func__, 170 sizeof(*cur_lun)); 171 172 devlist->num_luns++; 173 devlist->cur_lun = cur_lun; 174 175 STAILQ_INIT(&cur_lun->attr_list); 176 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links); 177 178 for (i = 0; attr[i] != NULL; i += 2) { 179 if (strcmp(attr[i], "id") == 0) { 180 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0); 181 } else { 182 log_errx(1, "%s: invalid LUN attribute %s = %s", 183 __func__, attr[i], attr[i+1]); 184 } 185 } 186 } 187} 188 189static void 190cctl_end_element(void *user_data, const char *name) 191{ 192 struct cctl_devlist_data *devlist; 193 struct cctl_lun *cur_lun; 194 char *str; 195 196 devlist = (struct cctl_devlist_data *)user_data; 197 cur_lun = devlist->cur_lun; 198 199 if ((cur_lun == NULL) 200 && (strcmp(name, "ctllunlist") != 0)) 201 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name); 202 203 if (devlist->cur_sb[devlist->level] == NULL) 204 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 205 devlist->level, name); 206 207 sbuf_finish(devlist->cur_sb[devlist->level]); 208 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 209 210 if (strlen(str) == 0) { 211 free(str); 212 str = NULL; 213 } 214 215 sbuf_delete(devlist->cur_sb[devlist->level]); 216 devlist->cur_sb[devlist->level] = NULL; 217 devlist->level--; 218 219 if (strcmp(name, "backend_type") == 0) { 220 cur_lun->backend_type = str; 221 str = NULL; 222 } else if (strcmp(name, "size") == 0) { 223 cur_lun->size_blocks = strtoull(str, NULL, 0); 224 } else if (strcmp(name, "blocksize") == 0) { 225 cur_lun->blocksize = strtoul(str, NULL, 0); 226 } else if (strcmp(name, "serial_number") == 0) { 227 cur_lun->serial_number = str; 228 str = NULL; 229 } else if (strcmp(name, "device_id") == 0) { 230 cur_lun->device_id = str; 231 str = NULL; 232 } else if (strcmp(name, "cfiscsi_target") == 0) { 233 cur_lun->cfiscsi_target = str; 234 str = NULL; 235 } else if (strcmp(name, "cfiscsi_lun") == 0) { 236 cur_lun->cfiscsi_lun = strtoul(str, NULL, 0); 237 } else if (strcmp(name, "lun") == 0) { 238 devlist->cur_lun = NULL; 239 } else if (strcmp(name, "ctllunlist") == 0) { 240 241 } 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, "cfiscsi_target") == 0) { 336 cur_port->cfiscsi_target = str; 337 str = NULL; 338 } else if (strcmp(name, "cfiscsi_status") == 0) { 339 cur_port->cfiscsi_status = strtoul(str, NULL, 0); 340 } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) { 341 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0); 342 } else if (strcmp(name, "targ_port") == 0) { 343 devlist->cur_port = NULL; 344 } else if (strcmp(name, "ctlportlist") == 0) { 345 346 } else { 347 struct cctl_lun_nv *nv; 348 349 nv = calloc(1, sizeof(*nv)); 350 if (nv == NULL) 351 log_err(1, "%s: can't allocate %zd bytes for nv pair", 352 __func__, sizeof(*nv)); 353 354 nv->name = checked_strdup(name); 355 356 nv->value = str; 357 str = NULL; 358 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links); 359 } 360 361 free(str); 362} 363 364static void 365cctl_char_handler(void *user_data, const XML_Char *str, int len) 366{ 367 struct cctl_devlist_data *devlist; 368 369 devlist = (struct cctl_devlist_data *)user_data; 370 371 sbuf_bcat(devlist->cur_sb[devlist->level], str, len); 372} 373 374struct conf * 375conf_new_from_kernel(void) 376{ 377 struct conf *conf = NULL; 378 struct target *targ; 379 struct lun *cl; 380 struct lun_option *lo; 381 struct ctl_lun_list list; 382 struct cctl_devlist_data devlist; 383 struct cctl_lun *lun; 384 struct cctl_port *port; 385 XML_Parser parser; 386 char *str; 387 int len, retval; 388 389 bzero(&devlist, sizeof(devlist)); 390 STAILQ_INIT(&devlist.lun_list); 391 STAILQ_INIT(&devlist.port_list); 392 393 log_debugx("obtaining previously configured CTL luns from the kernel"); 394 395 str = NULL; 396 len = 4096; 397retry: 398 str = realloc(str, len); 399 if (str == NULL) 400 log_err(1, "realloc"); 401 402 bzero(&list, sizeof(list)); 403 list.alloc_len = len; 404 list.status = CTL_LUN_LIST_NONE; 405 list.lun_xml = str; 406 407 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) { 408 log_warn("error issuing CTL_LUN_LIST ioctl"); 409 free(str); 410 return (NULL); 411 } 412 413 if (list.status == CTL_LUN_LIST_ERROR) { 414 log_warnx("error returned from CTL_LUN_LIST ioctl: %s", 415 list.error_str); 416 free(str); 417 return (NULL); 418 } 419 420 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 421 len = len << 1; 422 goto retry; 423 } 424 425 parser = XML_ParserCreate(NULL); 426 if (parser == NULL) { 427 log_warnx("unable to create XML parser"); 428 free(str); 429 return (NULL); 430 } 431 432 XML_SetUserData(parser, &devlist); 433 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element); 434 XML_SetCharacterDataHandler(parser, cctl_char_handler); 435 436 retval = XML_Parse(parser, str, strlen(str), 1); 437 XML_ParserFree(parser); 438 free(str); 439 if (retval != 1) { 440 log_warnx("XML_Parse failed"); 441 return (NULL); 442 } 443 444 str = NULL; 445 len = 4096; 446retry_port: 447 str = realloc(str, len); 448 if (str == NULL) 449 log_err(1, "realloc"); 450 451 bzero(&list, sizeof(list)); 452 list.alloc_len = len; 453 list.status = CTL_LUN_LIST_NONE; 454 list.lun_xml = str; 455 456 if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) { 457 log_warn("error issuing CTL_PORT_LIST ioctl"); 458 free(str); 459 return (NULL); 460 } 461 462 if (list.status == CTL_PORT_LIST_ERROR) { 463 log_warnx("error returned from CTL_PORT_LIST ioctl: %s", 464 list.error_str); 465 free(str); 466 return (NULL); 467 } 468 469 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 470 len = len << 1; 471 goto retry_port; 472 } 473 474 parser = XML_ParserCreate(NULL); 475 if (parser == NULL) { 476 log_warnx("unable to create XML parser"); 477 free(str); 478 return (NULL); 479 } 480 481 XML_SetUserData(parser, &devlist); 482 XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement); 483 XML_SetCharacterDataHandler(parser, cctl_char_handler); 484 485 retval = XML_Parse(parser, str, strlen(str), 1); 486 XML_ParserFree(parser); 487 free(str); 488 if (retval != 1) { 489 log_warnx("XML_Parse failed"); 490 return (NULL); 491 } 492 493 conf = conf_new(); 494 495 STAILQ_FOREACH(port, &devlist.port_list, links) { 496 497 if (port->cfiscsi_target == NULL) { 498 log_debugx("CTL port %ju wasn't managed by ctld; " 499 "ignoring", (uintmax_t)port->port_id); 500 continue; 501 } 502 if (port->cfiscsi_status != 1) { 503 log_debugx("CTL port %ju is not active (%d); ignoring", 504 (uintmax_t)port->port_id, port->cfiscsi_status); 505 continue; 506 } 507 508 targ = target_find(conf, port->cfiscsi_target); 509 if (targ == NULL) { 510#if 0 511 log_debugx("found new kernel target %s for CTL port %ld", 512 port->cfiscsi_target, port->port_id); 513#endif 514 targ = target_new(conf, port->cfiscsi_target); 515 if (targ == NULL) { 516 log_warnx("target_new failed"); 517 continue; 518 } 519 } 520 } 521 522 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 523 struct cctl_lun_nv *nv; 524 525 if (lun->cfiscsi_target == NULL) { 526 log_debugx("CTL lun %ju wasn't managed by ctld; " 527 "ignoring", (uintmax_t)lun->lun_id); 528 continue; 529 } 530 531 targ = target_find(conf, lun->cfiscsi_target); 532 if (targ == NULL) { 533#if 0 534 log_debugx("found new kernel target %s for CTL lun %ld", 535 lun->cfiscsi_target, lun->lun_id); 536#endif 537 targ = target_new(conf, lun->cfiscsi_target); 538 if (targ == NULL) { 539 log_warnx("target_new failed"); 540 continue; 541 } 542 } 543 544 cl = lun_find(targ, lun->cfiscsi_lun); 545 if (cl != NULL) { 546 log_warnx("found CTL lun %ju, backing lun %d, target " 547 "%s, also backed by CTL lun %d; ignoring", 548 (uintmax_t) lun->lun_id, cl->l_lun, 549 cl->l_target->t_name, cl->l_ctl_lun); 550 continue; 551 } 552 553 log_debugx("found CTL lun %ju, backing lun %d, target %s", 554 (uintmax_t)lun->lun_id, lun->cfiscsi_lun, lun->cfiscsi_target); 555 556 cl = lun_new(targ, lun->cfiscsi_lun); 557 if (cl == NULL) { 558 log_warnx("lun_new failed"); 559 continue; 560 } 561 lun_set_backend(cl, lun->backend_type); 562 lun_set_blocksize(cl, lun->blocksize); 563 lun_set_device_id(cl, lun->device_id); 564 lun_set_serial(cl, lun->serial_number); 565 lun_set_size(cl, lun->size_blocks * cl->l_blocksize); 566 lun_set_ctl_lun(cl, lun->lun_id); 567 568 STAILQ_FOREACH(nv, &lun->attr_list, links) { 569 if (strcmp(nv->name, "file") == 0 || 570 strcmp(nv->name, "dev") == 0) { 571 lun_set_path(cl, nv->value); 572 continue; 573 } 574 lo = lun_option_new(cl, nv->name, nv->value); 575 if (lo == NULL) 576 log_warnx("unable to add CTL lun option %s " 577 "for CTL lun %ju for lun %d, target %s", 578 nv->name, (uintmax_t) lun->lun_id, 579 cl->l_lun, cl->l_target->t_name); 580 } 581 } 582 583 return (conf); 584} 585 586static void 587str_arg(struct ctl_be_arg *arg, const char *name, const char *value) 588{ 589 590 arg->namelen = strlen(name) + 1; 591 arg->name = __DECONST(char *, name); 592 arg->vallen = strlen(value) + 1; 593 arg->value = __DECONST(char *, value); 594 arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD; 595} 596 597int 598kernel_lun_add(struct lun *lun) 599{ 600 struct lun_option *lo; 601 struct ctl_lun_req req; 602 char *tmp; 603 int error, i, num_options; 604 605 bzero(&req, sizeof(req)); 606 607 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 608 req.reqtype = CTL_LUNREQ_CREATE; 609 610 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 611 612 if (lun->l_size != 0) 613 req.reqdata.create.lun_size_bytes = lun->l_size; 614 615 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 616 req.reqdata.create.device_type = T_DIRECT; 617 618 if (lun->l_serial != NULL) { 619 strncpy(req.reqdata.create.serial_num, lun->l_serial, 620 sizeof(req.reqdata.create.serial_num)); 621 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 622 } 623 624 if (lun->l_device_id != NULL) { 625 strncpy(req.reqdata.create.device_id, lun->l_device_id, 626 sizeof(req.reqdata.create.device_id)); 627 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 628 } 629 630 if (lun->l_path != NULL) { 631 lo = lun_option_find(lun, "file"); 632 if (lo != NULL) { 633 lun_option_set(lo, lun->l_path); 634 } else { 635 lo = lun_option_new(lun, "file", lun->l_path); 636 assert(lo != NULL); 637 } 638 } 639 640 lo = lun_option_find(lun, "cfiscsi_target"); 641 if (lo != NULL) { 642 lun_option_set(lo, lun->l_target->t_name); 643 } else { 644 lo = lun_option_new(lun, "cfiscsi_target", 645 lun->l_target->t_name); 646 assert(lo != NULL); 647 } 648 649 asprintf(&tmp, "%d", lun->l_lun); 650 if (tmp == NULL) 651 log_errx(1, "asprintf"); 652 lo = lun_option_find(lun, "cfiscsi_lun"); 653 if (lo != NULL) { 654 lun_option_set(lo, tmp); 655 free(tmp); 656 } else { 657 lo = lun_option_new(lun, "cfiscsi_lun", tmp); 658 free(tmp); 659 assert(lo != NULL); 660 } 661 662 asprintf(&tmp, "%s,lun,%d", lun->l_target->t_name, lun->l_lun); 663 if (tmp == NULL) 664 log_errx(1, "asprintf"); 665 lo = lun_option_find(lun, "scsiname"); 666 if (lo != NULL) { 667 lun_option_set(lo, tmp); 668 free(tmp); 669 } else { 670 lo = lun_option_new(lun, "scsiname", tmp); 671 free(tmp); 672 assert(lo != NULL); 673 } 674 675 num_options = 0; 676 TAILQ_FOREACH(lo, &lun->l_options, lo_next) 677 num_options++; 678 679 req.num_be_args = num_options; 680 if (num_options > 0) { 681 req.be_args = malloc(num_options * sizeof(*req.be_args)); 682 if (req.be_args == NULL) { 683 log_warn("error allocating %zd bytes", 684 num_options * sizeof(*req.be_args)); 685 return (1); 686 } 687 688 i = 0; 689 TAILQ_FOREACH(lo, &lun->l_options, lo_next) { 690 str_arg(&req.be_args[i], lo->lo_name, lo->lo_value); 691 i++; 692 } 693 assert(i == num_options); 694 } 695 696 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 697 free(req.be_args); 698 if (error != 0) { 699 log_warn("error issuing CTL_LUN_REQ ioctl"); 700 return (1); 701 } 702 703 switch (req.status) { 704 case CTL_LUN_ERROR: 705 log_warnx("LUN creation error: %s", req.error_str); 706 return (1); 707 case CTL_LUN_WARNING: 708 log_warnx("LUN creation warning: %s", req.error_str); 709 break; 710 case CTL_LUN_OK: 711 break; 712 default: 713 log_warnx("unknown LUN creation status: %d", 714 req.status); 715 return (1); 716 } 717 718 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id); 719 return (0); 720} 721 722int 723kernel_lun_resize(struct lun *lun) 724{ 725 struct ctl_lun_req req; 726 727 bzero(&req, sizeof(req)); 728 729 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 730 req.reqtype = CTL_LUNREQ_MODIFY; 731 732 req.reqdata.modify.lun_id = lun->l_ctl_lun; 733 req.reqdata.modify.lun_size_bytes = lun->l_size; 734 735 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 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 modification error: %s", req.error_str); 743 return (1); 744 case CTL_LUN_WARNING: 745 log_warnx("LUN modification warning: %s", req.error_str); 746 break; 747 case CTL_LUN_OK: 748 break; 749 default: 750 log_warnx("unknown LUN modification status: %d", 751 req.status); 752 return (1); 753 } 754 755 return (0); 756} 757 758int 759kernel_lun_remove(struct lun *lun) 760{ 761 struct ctl_lun_req req; 762 763 bzero(&req, sizeof(req)); 764 765 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 766 req.reqtype = CTL_LUNREQ_RM; 767 768 req.reqdata.rm.lun_id = lun->l_ctl_lun; 769 770 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 771 log_warn("error issuing CTL_LUN_REQ ioctl"); 772 return (1); 773 } 774 775 switch (req.status) { 776 case CTL_LUN_ERROR: 777 log_warnx("LUN removal error: %s", req.error_str); 778 return (1); 779 case CTL_LUN_WARNING: 780 log_warnx("LUN removal warning: %s", req.error_str); 781 break; 782 case CTL_LUN_OK: 783 break; 784 default: 785 log_warnx("unknown LUN removal status: %d", req.status); 786 return (1); 787 } 788 789 return (0); 790} 791 792void 793kernel_handoff(struct connection *conn) 794{ 795 struct ctl_iscsi req; 796 797 bzero(&req, sizeof(req)); 798 799 req.type = CTL_ISCSI_HANDOFF; 800 strlcpy(req.data.handoff.initiator_name, 801 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 802 strlcpy(req.data.handoff.initiator_addr, 803 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 804 if (conn->conn_initiator_alias != NULL) { 805 strlcpy(req.data.handoff.initiator_alias, 806 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 807 } 808 memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid, 809 sizeof(req.data.handoff.initiator_isid)); 810 strlcpy(req.data.handoff.target_name, 811 conn->conn_target->t_name, sizeof(req.data.handoff.target_name)); 812#ifdef ICL_KERNEL_PROXY 813 if (proxy_mode) 814 req.data.handoff.connection_id = conn->conn_socket; 815 else 816 req.data.handoff.socket = conn->conn_socket; 817#else 818 req.data.handoff.socket = conn->conn_socket; 819#endif 820 req.data.handoff.portal_group_tag = 821 conn->conn_portal->p_portal_group->pg_tag; 822 if (conn->conn_header_digest == CONN_DIGEST_CRC32C) 823 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 824 if (conn->conn_data_digest == CONN_DIGEST_CRC32C) 825 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 826 req.data.handoff.cmdsn = conn->conn_cmdsn; 827 req.data.handoff.statsn = conn->conn_statsn; 828 req.data.handoff.max_recv_data_segment_length = 829 conn->conn_max_data_segment_length; 830 req.data.handoff.max_burst_length = conn->conn_max_burst_length; 831 req.data.handoff.immediate_data = conn->conn_immediate_data; 832 833 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 834 log_err(1, "error issuing CTL_ISCSI ioctl; " 835 "dropping connection"); 836 } 837 838 if (req.status != CTL_ISCSI_OK) { 839 log_errx(1, "error returned from CTL iSCSI handoff request: " 840 "%s; dropping connection", req.error_str); 841 } 842} 843 844int 845kernel_port_add(struct target *targ) 846{ 847 struct ctl_port_entry entry; 848 struct ctl_req req; 849 char tagstr[16]; 850 int error; 851 uint32_t port_id = -1; 852 853 bzero(&req, sizeof(req)); 854 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 855 req.reqtype = CTL_REQ_CREATE; 856 req.num_args = 4; 857 req.args = malloc(req.num_args * sizeof(*req.args)); 858 req.args[0].namelen = sizeof("port_id"); 859 req.args[0].name = __DECONST(char *, "port_id"); 860 req.args[0].vallen = sizeof(port_id); 861 req.args[0].value = &port_id; 862 req.args[0].flags = CTL_BEARG_WR; 863 str_arg(&req.args[1], "cfiscsi_target", targ->t_name); 864 snprintf(tagstr, sizeof(tagstr), "%d", targ->t_portal_group->pg_tag); 865 str_arg(&req.args[2], "cfiscsi_portal_group_tag", tagstr); 866 if (targ->t_alias) 867 str_arg(&req.args[3], "cfiscsi_target_alias", targ->t_alias); 868 else 869 req.num_args--; 870 871 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 872 free(req.args); 873 if (error != 0) { 874 log_warn("error issuing CTL_PORT_REQ ioctl"); 875 return (1); 876 } 877 878 if (req.status == CTL_LUN_ERROR) { 879 log_warnx("error returned from port creation request: %s", 880 req.error_str); 881 return (1); 882 } 883 884 if (req.status != CTL_LUN_OK) { 885 log_warnx("unknown port creation request status %d", 886 req.status); 887 return (1); 888 } 889 890 bzero(&entry, sizeof(entry)); 891 entry.targ_port = port_id; 892 893 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 894 if (error != 0) { 895 log_warn("CTL_ENABLE_PORT ioctl failed"); 896 return (-1); 897 } 898 899 return (0); 900} 901 902int 903kernel_port_remove(struct target *targ) 904{ 905 struct ctl_req req; 906 char tagstr[16]; 907 int error; 908 909 bzero(&req, sizeof(req)); 910 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 911 req.reqtype = CTL_REQ_REMOVE; 912 req.num_args = 2; 913 req.args = malloc(req.num_args * sizeof(*req.args)); 914 str_arg(&req.args[0], "cfiscsi_target", targ->t_name); 915 if (targ->t_portal_group) { 916 snprintf(tagstr, sizeof(tagstr), "%d", 917 targ->t_portal_group->pg_tag); 918 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr); 919 } else 920 req.num_args--; 921 922 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 923 free(req.args); 924 if (error != 0) { 925 log_warn("error issuing CTL_PORT_REQ ioctl"); 926 return (1); 927 } 928 929 if (req.status == CTL_LUN_ERROR) { 930 log_warnx("error returned from port removal request: %s", 931 req.error_str); 932 return (1); 933 } 934 935 if (req.status != CTL_LUN_OK) { 936 log_warnx("unknown port removal request status %d", 937 req.status); 938 return (1); 939 } 940 941 return (0); 942} 943 944#ifdef ICL_KERNEL_PROXY 945void 946kernel_listen(struct addrinfo *ai, bool iser, int portal_id) 947{ 948 struct ctl_iscsi req; 949 950 bzero(&req, sizeof(req)); 951 952 req.type = CTL_ISCSI_LISTEN; 953 req.data.listen.iser = iser; 954 req.data.listen.domain = ai->ai_family; 955 req.data.listen.socktype = ai->ai_socktype; 956 req.data.listen.protocol = ai->ai_protocol; 957 req.data.listen.addr = ai->ai_addr; 958 req.data.listen.addrlen = ai->ai_addrlen; 959 req.data.listen.portal_id = portal_id; 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 listen: %s", 966 req.error_str); 967 } 968} 969 970void 971kernel_accept(int *connection_id, int *portal_id, 972 struct sockaddr *client_sa, socklen_t *client_salen) 973{ 974 struct ctl_iscsi req; 975 struct sockaddr_storage ss; 976 977 bzero(&req, sizeof(req)); 978 979 req.type = CTL_ISCSI_ACCEPT; 980 req.data.accept.initiator_addr = (struct sockaddr *)&ss; 981 982 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 983 log_err(1, "error issuing CTL_ISCSI ioctl"); 984 985 if (req.status != CTL_ISCSI_OK) { 986 log_errx(1, "error returned from CTL iSCSI accept: %s", 987 req.error_str); 988 } 989 990 *connection_id = req.data.accept.connection_id; 991 *portal_id = req.data.accept.portal_id; 992 *client_salen = req.data.accept.initiator_addrlen; 993 memcpy(client_sa, &ss, *client_salen); 994} 995 996void 997kernel_send(struct pdu *pdu) 998{ 999 struct ctl_iscsi req; 1000 1001 bzero(&req, sizeof(req)); 1002 1003 req.type = CTL_ISCSI_SEND; 1004 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 1005 req.data.send.bhs = pdu->pdu_bhs; 1006 req.data.send.data_segment_len = pdu->pdu_data_len; 1007 req.data.send.data_segment = pdu->pdu_data; 1008 1009 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1010 log_err(1, "error issuing CTL_ISCSI ioctl; " 1011 "dropping connection"); 1012 } 1013 1014 if (req.status != CTL_ISCSI_OK) { 1015 log_errx(1, "error returned from CTL iSCSI send: " 1016 "%s; dropping connection", req.error_str); 1017 } 1018} 1019 1020void 1021kernel_receive(struct pdu *pdu) 1022{ 1023 struct ctl_iscsi req; 1024 1025 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH); 1026 if (pdu->pdu_data == NULL) 1027 log_err(1, "malloc"); 1028 1029 bzero(&req, sizeof(req)); 1030 1031 req.type = CTL_ISCSI_RECEIVE; 1032 req.data.receive.connection_id = pdu->pdu_connection->conn_socket; 1033 req.data.receive.bhs = pdu->pdu_bhs; 1034 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH; 1035 req.data.receive.data_segment = pdu->pdu_data; 1036 1037 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1038 log_err(1, "error issuing CTL_ISCSI ioctl; " 1039 "dropping connection"); 1040 } 1041 1042 if (req.status != CTL_ISCSI_OK) { 1043 log_errx(1, "error returned from CTL iSCSI receive: " 1044 "%s; dropping connection", req.error_str); 1045 } 1046 1047} 1048 1049#endif /* ICL_KERNEL_PROXY */ 1050 1051/* 1052 * XXX: I CANT INTO LATIN 1053 */ 1054void 1055kernel_capsicate(void) 1056{ 1057 int error; 1058 cap_rights_t rights; 1059 const unsigned long cmds[] = { CTL_ISCSI }; 1060 1061 cap_rights_init(&rights, CAP_IOCTL); 1062 error = cap_rights_limit(ctl_fd, &rights); 1063 if (error != 0 && errno != ENOSYS) 1064 log_err(1, "cap_rights_limit"); 1065 1066 error = cap_ioctls_limit(ctl_fd, cmds, 1067 sizeof(cmds) / sizeof(cmds[0])); 1068 if (error != 0 && errno != ENOSYS) 1069 log_err(1, "cap_ioctls_limit"); 1070 1071 error = cap_enter(); 1072 if (error != 0 && errno != ENOSYS) 1073 log_err(1, "cap_enter"); 1074 1075 if (cap_sandboxed()) 1076 log_debugx("Capsicum capability mode enabled"); 1077 else 1078 log_warnx("Capsicum capability mode not supported"); 1079} 1080 1081