kernel.c revision 268293
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 268293 2014-07-05 19:30:20Z 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 int cfiscsi_lun; 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 *cfiscsi_target; 124 uint16_t cfiscsi_portal_group_tag; 125 STAILQ_HEAD(,cctl_lun_nv) attr_list; 126 STAILQ_ENTRY(cctl_port) links; 127}; 128 129struct cctl_devlist_data { 130 int num_luns; 131 STAILQ_HEAD(,cctl_lun) lun_list; 132 struct cctl_lun *cur_lun; 133 int num_ports; 134 STAILQ_HEAD(,cctl_port) port_list; 135 struct cctl_port *cur_port; 136 int level; 137 struct sbuf *cur_sb[32]; 138}; 139 140static void 141cctl_start_element(void *user_data, const char *name, const char **attr) 142{ 143 int i; 144 struct cctl_devlist_data *devlist; 145 struct cctl_lun *cur_lun; 146 147 devlist = (struct cctl_devlist_data *)user_data; 148 cur_lun = devlist->cur_lun; 149 devlist->level++; 150 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 151 sizeof(devlist->cur_sb[0]))) 152 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 153 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 154 155 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 156 if (devlist->cur_sb[devlist->level] == NULL) 157 log_err(1, "%s: unable to allocate sbuf", __func__); 158 159 if (strcmp(name, "lun") == 0) { 160 if (cur_lun != NULL) 161 log_errx(1, "%s: improper lun element nesting", 162 __func__); 163 164 cur_lun = calloc(1, sizeof(*cur_lun)); 165 if (cur_lun == NULL) 166 log_err(1, "%s: cannot allocate %zd bytes", __func__, 167 sizeof(*cur_lun)); 168 169 devlist->num_luns++; 170 devlist->cur_lun = cur_lun; 171 172 STAILQ_INIT(&cur_lun->attr_list); 173 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links); 174 175 for (i = 0; attr[i] != NULL; i += 2) { 176 if (strcmp(attr[i], "id") == 0) { 177 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0); 178 } else { 179 log_errx(1, "%s: invalid LUN attribute %s = %s", 180 __func__, attr[i], attr[i+1]); 181 } 182 } 183 } 184} 185 186static void 187cctl_end_element(void *user_data, const char *name) 188{ 189 struct cctl_devlist_data *devlist; 190 struct cctl_lun *cur_lun; 191 char *str; 192 193 devlist = (struct cctl_devlist_data *)user_data; 194 cur_lun = devlist->cur_lun; 195 196 if ((cur_lun == NULL) 197 && (strcmp(name, "ctllunlist") != 0)) 198 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name); 199 200 if (devlist->cur_sb[devlist->level] == NULL) 201 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 202 devlist->level, name); 203 204 sbuf_finish(devlist->cur_sb[devlist->level]); 205 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 206 207 if (strlen(str) == 0) { 208 free(str); 209 str = NULL; 210 } 211 212 sbuf_delete(devlist->cur_sb[devlist->level]); 213 devlist->cur_sb[devlist->level] = NULL; 214 devlist->level--; 215 216 if (strcmp(name, "backend_type") == 0) { 217 cur_lun->backend_type = str; 218 str = NULL; 219 } else if (strcmp(name, "size") == 0) { 220 cur_lun->size_blocks = strtoull(str, NULL, 0); 221 } else if (strcmp(name, "blocksize") == 0) { 222 cur_lun->blocksize = strtoul(str, NULL, 0); 223 } else if (strcmp(name, "serial_number") == 0) { 224 cur_lun->serial_number = str; 225 str = NULL; 226 } else if (strcmp(name, "device_id") == 0) { 227 cur_lun->device_id = str; 228 str = NULL; 229 } else if (strcmp(name, "cfiscsi_target") == 0) { 230 cur_lun->cfiscsi_target = str; 231 str = NULL; 232 } else if (strcmp(name, "cfiscsi_lun") == 0) { 233 cur_lun->cfiscsi_lun = strtoul(str, NULL, 0); 234 } else if (strcmp(name, "lun") == 0) { 235 devlist->cur_lun = NULL; 236 } else if (strcmp(name, "ctllunlist") == 0) { 237 238 } else { 239 struct cctl_lun_nv *nv; 240 241 nv = calloc(1, sizeof(*nv)); 242 if (nv == NULL) 243 log_err(1, "%s: can't allocate %zd bytes for nv pair", 244 __func__, sizeof(*nv)); 245 246 nv->name = checked_strdup(name); 247 248 nv->value = str; 249 str = NULL; 250 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links); 251 } 252 253 free(str); 254} 255 256static void 257cctl_start_pelement(void *user_data, const char *name, const char **attr) 258{ 259 int i; 260 struct cctl_devlist_data *devlist; 261 struct cctl_port *cur_port; 262 263 devlist = (struct cctl_devlist_data *)user_data; 264 cur_port = devlist->cur_port; 265 devlist->level++; 266 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 267 sizeof(devlist->cur_sb[0]))) 268 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 269 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 270 271 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 272 if (devlist->cur_sb[devlist->level] == NULL) 273 log_err(1, "%s: unable to allocate sbuf", __func__); 274 275 if (strcmp(name, "targ_port") == 0) { 276 if (cur_port != NULL) 277 log_errx(1, "%s: improper port element nesting (%s)", 278 __func__, name); 279 280 cur_port = calloc(1, sizeof(*cur_port)); 281 if (cur_port == NULL) 282 log_err(1, "%s: cannot allocate %zd bytes", __func__, 283 sizeof(*cur_port)); 284 285 devlist->num_ports++; 286 devlist->cur_port = cur_port; 287 288 STAILQ_INIT(&cur_port->attr_list); 289 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links); 290 291 for (i = 0; attr[i] != NULL; i += 2) { 292 if (strcmp(attr[i], "id") == 0) { 293 cur_port->port_id = strtoul(attr[i+1], NULL, 0); 294 } else { 295 log_errx(1, "%s: invalid LUN attribute %s = %s", 296 __func__, attr[i], attr[i+1]); 297 } 298 } 299 } 300} 301 302static void 303cctl_end_pelement(void *user_data, const char *name) 304{ 305 struct cctl_devlist_data *devlist; 306 struct cctl_port *cur_port; 307 char *str; 308 309 devlist = (struct cctl_devlist_data *)user_data; 310 cur_port = devlist->cur_port; 311 312 if ((cur_port == NULL) 313 && (strcmp(name, "ctlportlist") != 0)) 314 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name); 315 316 if (devlist->cur_sb[devlist->level] == NULL) 317 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 318 devlist->level, name); 319 320 sbuf_finish(devlist->cur_sb[devlist->level]); 321 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 322 323 if (strlen(str) == 0) { 324 free(str); 325 str = NULL; 326 } 327 328 sbuf_delete(devlist->cur_sb[devlist->level]); 329 devlist->cur_sb[devlist->level] = NULL; 330 devlist->level--; 331 332 if (strcmp(name, "cfiscsi_target") == 0) { 333 cur_port->cfiscsi_target = str; 334 str = NULL; 335 } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) { 336 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0); 337 } else if (strcmp(name, "targ_port") == 0) { 338 devlist->cur_port = NULL; 339 } else if (strcmp(name, "ctlportlist") == 0) { 340 341 } else { 342 struct cctl_lun_nv *nv; 343 344 nv = calloc(1, sizeof(*nv)); 345 if (nv == NULL) 346 log_err(1, "%s: can't allocate %zd bytes for nv pair", 347 __func__, sizeof(*nv)); 348 349 nv->name = checked_strdup(name); 350 351 nv->value = str; 352 str = NULL; 353 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links); 354 } 355 356 free(str); 357} 358 359static void 360cctl_char_handler(void *user_data, const XML_Char *str, int len) 361{ 362 struct cctl_devlist_data *devlist; 363 364 devlist = (struct cctl_devlist_data *)user_data; 365 366 sbuf_bcat(devlist->cur_sb[devlist->level], str, len); 367} 368 369struct conf * 370conf_new_from_kernel(void) 371{ 372 struct conf *conf = NULL; 373 struct target *targ; 374 struct lun *cl; 375 struct lun_option *lo; 376 struct ctl_lun_list list; 377 struct cctl_devlist_data devlist; 378 struct cctl_lun *lun; 379 struct cctl_port *port; 380 XML_Parser parser; 381 char *str; 382 int len, retval; 383 384 bzero(&devlist, sizeof(devlist)); 385 STAILQ_INIT(&devlist.lun_list); 386 STAILQ_INIT(&devlist.port_list); 387 388 log_debugx("obtaining previously configured CTL luns from the kernel"); 389 390 str = NULL; 391 len = 4096; 392retry: 393 str = realloc(str, len); 394 if (str == NULL) 395 log_err(1, "realloc"); 396 397 bzero(&list, sizeof(list)); 398 list.alloc_len = len; 399 list.status = CTL_LUN_LIST_NONE; 400 list.lun_xml = str; 401 402 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) { 403 log_warn("error issuing CTL_LUN_LIST ioctl"); 404 free(str); 405 return (NULL); 406 } 407 408 if (list.status == CTL_LUN_LIST_ERROR) { 409 log_warnx("error returned from CTL_LUN_LIST ioctl: %s", 410 list.error_str); 411 free(str); 412 return (NULL); 413 } 414 415 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 416 len = len << 1; 417 goto retry; 418 } 419 420 parser = XML_ParserCreate(NULL); 421 if (parser == NULL) { 422 log_warnx("unable to create XML parser"); 423 free(str); 424 return (NULL); 425 } 426 427 XML_SetUserData(parser, &devlist); 428 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element); 429 XML_SetCharacterDataHandler(parser, cctl_char_handler); 430 431 retval = XML_Parse(parser, str, strlen(str), 1); 432 XML_ParserFree(parser); 433 free(str); 434 if (retval != 1) { 435 log_warnx("XML_Parse failed"); 436 return (NULL); 437 } 438 439 str = NULL; 440 len = 4096; 441retry_port: 442 str = realloc(str, len); 443 if (str == NULL) 444 log_err(1, "realloc"); 445 446 bzero(&list, sizeof(list)); 447 list.alloc_len = len; 448 list.status = CTL_LUN_LIST_NONE; 449 list.lun_xml = str; 450 451 if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) { 452 log_warn("error issuing CTL_PORT_LIST ioctl"); 453 free(str); 454 return (NULL); 455 } 456 457 if (list.status == CTL_PORT_LIST_ERROR) { 458 log_warnx("error returned from CTL_PORT_LIST ioctl: %s", 459 list.error_str); 460 free(str); 461 return (NULL); 462 } 463 464 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 465 len = len << 1; 466 goto retry_port; 467 } 468 469 parser = XML_ParserCreate(NULL); 470 if (parser == NULL) { 471 log_warnx("unable to create XML parser"); 472 free(str); 473 return (NULL); 474 } 475 476 XML_SetUserData(parser, &devlist); 477 XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement); 478 XML_SetCharacterDataHandler(parser, cctl_char_handler); 479 480 retval = XML_Parse(parser, str, strlen(str), 1); 481 XML_ParserFree(parser); 482 free(str); 483 if (retval != 1) { 484 log_warnx("XML_Parse failed"); 485 return (NULL); 486 } 487 488 conf = conf_new(); 489 490 STAILQ_FOREACH(port, &devlist.port_list, links) { 491 492 if (port->cfiscsi_target == NULL) { 493 log_debugx("CTL port %ju wasn't managed by ctld; " 494 "ignoring", (uintmax_t)port->port_id); 495 continue; 496 } 497 498 targ = target_find(conf, port->cfiscsi_target); 499 if (targ == NULL) { 500#if 0 501 log_debugx("found new kernel target %s for CTL port %ld", 502 port->cfiscsi_target, port->port_id); 503#endif 504 targ = target_new(conf, port->cfiscsi_target); 505 if (targ == NULL) { 506 log_warnx("target_new failed"); 507 continue; 508 } 509 } 510 } 511 512 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 513 struct cctl_lun_nv *nv; 514 515 if (lun->cfiscsi_target == NULL) { 516 log_debugx("CTL lun %ju wasn't managed by ctld; " 517 "ignoring", (uintmax_t)lun->lun_id); 518 continue; 519 } 520 521 targ = target_find(conf, lun->cfiscsi_target); 522 if (targ == NULL) { 523#if 0 524 log_debugx("found new kernel target %s for CTL lun %ld", 525 lun->cfiscsi_target, lun->lun_id); 526#endif 527 targ = target_new(conf, lun->cfiscsi_target); 528 if (targ == NULL) { 529 log_warnx("target_new failed"); 530 continue; 531 } 532 } 533 534 cl = lun_find(targ, lun->cfiscsi_lun); 535 if (cl != NULL) { 536 log_warnx("found CTL lun %ju, backing lun %d, target " 537 "%s, also backed by CTL lun %d; ignoring", 538 (uintmax_t) lun->lun_id, cl->l_lun, 539 cl->l_target->t_name, cl->l_ctl_lun); 540 continue; 541 } 542 543 log_debugx("found CTL lun %ju, backing lun %d, target %s", 544 (uintmax_t)lun->lun_id, lun->cfiscsi_lun, lun->cfiscsi_target); 545 546 cl = lun_new(targ, lun->cfiscsi_lun); 547 if (cl == NULL) { 548 log_warnx("lun_new failed"); 549 continue; 550 } 551 lun_set_backend(cl, lun->backend_type); 552 lun_set_blocksize(cl, lun->blocksize); 553 lun_set_device_id(cl, lun->device_id); 554 lun_set_serial(cl, lun->serial_number); 555 lun_set_size(cl, lun->size_blocks * cl->l_blocksize); 556 lun_set_ctl_lun(cl, lun->lun_id); 557 558 STAILQ_FOREACH(nv, &lun->attr_list, links) { 559 if (strcmp(nv->name, "file") == 0 || 560 strcmp(nv->name, "dev") == 0) { 561 lun_set_path(cl, nv->value); 562 continue; 563 } 564 lo = lun_option_new(cl, nv->name, nv->value); 565 if (lo == NULL) 566 log_warnx("unable to add CTL lun option %s " 567 "for CTL lun %ju for lun %d, target %s", 568 nv->name, (uintmax_t) lun->lun_id, 569 cl->l_lun, cl->l_target->t_name); 570 } 571 } 572 573 return (conf); 574} 575 576static void 577str_arg(struct ctl_be_arg *arg, const char *name, const char *value) 578{ 579 580 arg->namelen = strlen(name) + 1; 581 arg->name = __DECONST(char *, name); 582 arg->vallen = strlen(value) + 1; 583 arg->value = __DECONST(char *, value); 584 arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD; 585} 586 587int 588kernel_lun_add(struct lun *lun) 589{ 590 struct lun_option *lo; 591 struct ctl_lun_req req; 592 char *tmp; 593 int error, i, num_options; 594 595 bzero(&req, sizeof(req)); 596 597 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 598 req.reqtype = CTL_LUNREQ_CREATE; 599 600 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 601 602 if (lun->l_size != 0) 603 req.reqdata.create.lun_size_bytes = lun->l_size; 604 605 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 606 req.reqdata.create.device_type = T_DIRECT; 607 608 if (lun->l_serial != NULL) { 609 strncpy(req.reqdata.create.serial_num, lun->l_serial, 610 sizeof(req.reqdata.create.serial_num)); 611 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 612 } 613 614 if (lun->l_device_id != NULL) { 615 strncpy(req.reqdata.create.device_id, lun->l_device_id, 616 sizeof(req.reqdata.create.device_id)); 617 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 618 } 619 620 if (lun->l_path != NULL) { 621 lo = lun_option_find(lun, "file"); 622 if (lo != NULL) { 623 lun_option_set(lo, lun->l_path); 624 } else { 625 lo = lun_option_new(lun, "file", lun->l_path); 626 assert(lo != NULL); 627 } 628 } 629 630 lo = lun_option_find(lun, "cfiscsi_target"); 631 if (lo != NULL) { 632 lun_option_set(lo, lun->l_target->t_name); 633 } else { 634 lo = lun_option_new(lun, "cfiscsi_target", 635 lun->l_target->t_name); 636 assert(lo != NULL); 637 } 638 639 asprintf(&tmp, "%d", lun->l_lun); 640 if (tmp == NULL) 641 log_errx(1, "asprintf"); 642 lo = lun_option_find(lun, "cfiscsi_lun"); 643 if (lo != NULL) { 644 lun_option_set(lo, tmp); 645 free(tmp); 646 } else { 647 lo = lun_option_new(lun, "cfiscsi_lun", tmp); 648 free(tmp); 649 assert(lo != NULL); 650 } 651 652 asprintf(&tmp, "%s,lun,%d", lun->l_target->t_name, lun->l_lun); 653 if (tmp == NULL) 654 log_errx(1, "asprintf"); 655 lo = lun_option_find(lun, "scsiname"); 656 if (lo != NULL) { 657 lun_option_set(lo, tmp); 658 free(tmp); 659 } else { 660 lo = lun_option_new(lun, "scsiname", tmp); 661 free(tmp); 662 assert(lo != NULL); 663 } 664 665 num_options = 0; 666 TAILQ_FOREACH(lo, &lun->l_options, lo_next) 667 num_options++; 668 669 req.num_be_args = num_options; 670 if (num_options > 0) { 671 req.be_args = malloc(num_options * sizeof(*req.be_args)); 672 if (req.be_args == NULL) { 673 log_warn("error allocating %zd bytes", 674 num_options * sizeof(*req.be_args)); 675 return (1); 676 } 677 678 i = 0; 679 TAILQ_FOREACH(lo, &lun->l_options, lo_next) { 680 str_arg(&req.be_args[i], lo->lo_name, lo->lo_value); 681 i++; 682 } 683 assert(i == num_options); 684 } 685 686 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 687 free(req.be_args); 688 if (error != 0) { 689 log_warn("error issuing CTL_LUN_REQ ioctl"); 690 return (1); 691 } 692 693 if (req.status == CTL_LUN_ERROR) { 694 log_warnx("error returned from LUN creation request: %s", 695 req.error_str); 696 return (1); 697 } 698 699 if (req.status != CTL_LUN_OK) { 700 log_warnx("unknown LUN creation request status %d", 701 req.status); 702 return (1); 703 } 704 705 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id); 706 707 return (0); 708} 709 710int 711kernel_lun_resize(struct lun *lun) 712{ 713 struct ctl_lun_req req; 714 715 bzero(&req, sizeof(req)); 716 717 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 718 req.reqtype = CTL_LUNREQ_MODIFY; 719 720 req.reqdata.modify.lun_id = lun->l_ctl_lun; 721 req.reqdata.modify.lun_size_bytes = lun->l_size; 722 723 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 724 log_warn("error issuing CTL_LUN_REQ ioctl"); 725 return (1); 726 } 727 728 if (req.status == CTL_LUN_ERROR) { 729 log_warnx("error returned from LUN modification request: %s", 730 req.error_str); 731 return (1); 732 } 733 734 if (req.status != CTL_LUN_OK) { 735 log_warnx("unknown LUN modification request status %d", 736 req.status); 737 return (1); 738 } 739 740 return (0); 741} 742 743int 744kernel_lun_remove(struct lun *lun) 745{ 746 struct ctl_lun_req req; 747 748 bzero(&req, sizeof(req)); 749 750 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 751 req.reqtype = CTL_LUNREQ_RM; 752 753 req.reqdata.rm.lun_id = lun->l_ctl_lun; 754 755 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 756 log_warn("error issuing CTL_LUN_REQ ioctl"); 757 return (1); 758 } 759 760 if (req.status == CTL_LUN_ERROR) { 761 log_warnx("error returned from LUN removal request: %s", 762 req.error_str); 763 return (1); 764 } 765 766 if (req.status != CTL_LUN_OK) { 767 log_warnx("unknown LUN removal request status %d", req.status); 768 return (1); 769 } 770 771 return (0); 772} 773 774void 775kernel_handoff(struct connection *conn) 776{ 777 struct ctl_iscsi req; 778 779 bzero(&req, sizeof(req)); 780 781 req.type = CTL_ISCSI_HANDOFF; 782 strlcpy(req.data.handoff.initiator_name, 783 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 784 strlcpy(req.data.handoff.initiator_addr, 785 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 786 if (conn->conn_initiator_alias != NULL) { 787 strlcpy(req.data.handoff.initiator_alias, 788 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 789 } 790 strlcpy(req.data.handoff.target_name, 791 conn->conn_target->t_name, sizeof(req.data.handoff.target_name)); 792#ifdef ICL_KERNEL_PROXY 793 if (proxy_mode) 794 req.data.handoff.connection_id = conn->conn_socket; 795 else 796 req.data.handoff.socket = conn->conn_socket; 797#else 798 req.data.handoff.socket = conn->conn_socket; 799#endif 800 req.data.handoff.portal_group_tag = 801 conn->conn_portal->p_portal_group->pg_tag; 802 if (conn->conn_header_digest == CONN_DIGEST_CRC32C) 803 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 804 if (conn->conn_data_digest == CONN_DIGEST_CRC32C) 805 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 806 req.data.handoff.cmdsn = conn->conn_cmdsn; 807 req.data.handoff.statsn = conn->conn_statsn; 808 req.data.handoff.max_recv_data_segment_length = 809 conn->conn_max_data_segment_length; 810 req.data.handoff.max_burst_length = conn->conn_max_burst_length; 811 req.data.handoff.immediate_data = conn->conn_immediate_data; 812 813 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 814 log_err(1, "error issuing CTL_ISCSI ioctl; " 815 "dropping connection"); 816 } 817 818 if (req.status != CTL_ISCSI_OK) { 819 log_errx(1, "error returned from CTL iSCSI handoff request: " 820 "%s; dropping connection", req.error_str); 821 } 822} 823 824int 825kernel_port_add(struct target *targ) 826{ 827 struct ctl_port_entry entry; 828 struct ctl_req req; 829 char tagstr[16]; 830 int error; 831 uint32_t port_id = -1; 832 833 bzero(&req, sizeof(req)); 834 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 835 req.reqtype = CTL_REQ_CREATE; 836 req.num_args = 4; 837 req.args = malloc(req.num_args * sizeof(*req.args)); 838 req.args[0].namelen = sizeof("port_id"); 839 req.args[0].name = __DECONST(char *, "port_id"); 840 req.args[0].vallen = sizeof(port_id); 841 req.args[0].value = &port_id; 842 req.args[0].flags = CTL_BEARG_WR; 843 str_arg(&req.args[1], "cfiscsi_target", targ->t_name); 844 str_arg(&req.args[2], "cfiscsi_target_alias", targ->t_alias); 845 snprintf(tagstr, sizeof(tagstr), "%d", targ->t_portal_group->pg_tag); 846 str_arg(&req.args[3], "cfiscsi_portal_group_tag", tagstr); 847 848 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 849 free(req.args); 850 if (error != 0) { 851 log_warn("error issuing CTL_PORT_REQ ioctl"); 852 return (1); 853 } 854 855 if (req.status == CTL_LUN_ERROR) { 856 log_warnx("error returned from port creation request: %s", 857 req.error_str); 858 return (1); 859 } 860 861 if (req.status != CTL_LUN_OK) { 862 log_warnx("unknown port creation request status %d", 863 req.status); 864 return (1); 865 } 866 867 bzero(&entry, sizeof(entry)); 868 entry.targ_port = port_id; 869 870 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 871 if (error != 0) { 872 log_warn("CTL_ENABLE_PORT ioctl failed"); 873 return (-1); 874 } 875 876 return (0); 877} 878 879int 880kernel_port_remove(struct target *targ) 881{ 882 struct ctl_req req; 883 char tagstr[16]; 884 int error; 885 886 bzero(&req, sizeof(req)); 887 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 888 req.reqtype = CTL_REQ_REMOVE; 889 req.num_args = 2; 890 req.args = malloc(req.num_args * sizeof(*req.args)); 891 str_arg(&req.args[0], "cfiscsi_target", targ->t_name); 892 if (targ->t_portal_group) { 893 snprintf(tagstr, sizeof(tagstr), "%d", 894 targ->t_portal_group->pg_tag); 895 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr); 896 } else 897 req.num_args--; 898 899 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 900 free(req.args); 901 if (error != 0) { 902 log_warn("error issuing CTL_PORT_REQ ioctl"); 903 return (1); 904 } 905 906 if (req.status == CTL_LUN_ERROR) { 907 log_warnx("error returned from port removal request: %s", 908 req.error_str); 909 return (1); 910 } 911 912 if (req.status != CTL_LUN_OK) { 913 log_warnx("unknown port removal request status %d", 914 req.status); 915 return (1); 916 } 917 918 return (0); 919} 920 921#ifdef ICL_KERNEL_PROXY 922void 923kernel_listen(struct addrinfo *ai, bool iser, int portal_id) 924{ 925 struct ctl_iscsi req; 926 927 bzero(&req, sizeof(req)); 928 929 req.type = CTL_ISCSI_LISTEN; 930 req.data.listen.iser = iser; 931 req.data.listen.domain = ai->ai_family; 932 req.data.listen.socktype = ai->ai_socktype; 933 req.data.listen.protocol = ai->ai_protocol; 934 req.data.listen.addr = ai->ai_addr; 935 req.data.listen.addrlen = ai->ai_addrlen; 936 req.data.listen.portal_id = portal_id; 937 938 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 939 log_err(1, "error issuing CTL_ISCSI ioctl"); 940 941 if (req.status != CTL_ISCSI_OK) { 942 log_errx(1, "error returned from CTL iSCSI listen: %s", 943 req.error_str); 944 } 945} 946 947void 948kernel_accept(int *connection_id, int *portal_id, 949 struct sockaddr *client_sa, socklen_t *client_salen) 950{ 951 struct ctl_iscsi req; 952 struct sockaddr_storage ss; 953 954 bzero(&req, sizeof(req)); 955 956 req.type = CTL_ISCSI_ACCEPT; 957 req.data.accept.initiator_addr = (struct sockaddr *)&ss; 958 959 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 960 log_err(1, "error issuing CTL_ISCSI ioctl"); 961 962 if (req.status != CTL_ISCSI_OK) { 963 log_errx(1, "error returned from CTL iSCSI accept: %s", 964 req.error_str); 965 } 966 967 *connection_id = req.data.accept.connection_id; 968 *portal_id = req.data.accept.portal_id; 969 *client_salen = req.data.accept.initiator_addrlen; 970 memcpy(client_sa, &ss, *client_salen); 971} 972 973void 974kernel_send(struct pdu *pdu) 975{ 976 struct ctl_iscsi req; 977 978 bzero(&req, sizeof(req)); 979 980 req.type = CTL_ISCSI_SEND; 981 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 982 req.data.send.bhs = pdu->pdu_bhs; 983 req.data.send.data_segment_len = pdu->pdu_data_len; 984 req.data.send.data_segment = pdu->pdu_data; 985 986 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 987 log_err(1, "error issuing CTL_ISCSI ioctl; " 988 "dropping connection"); 989 } 990 991 if (req.status != CTL_ISCSI_OK) { 992 log_errx(1, "error returned from CTL iSCSI send: " 993 "%s; dropping connection", req.error_str); 994 } 995} 996 997void 998kernel_receive(struct pdu *pdu) 999{ 1000 struct ctl_iscsi req; 1001 1002 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH); 1003 if (pdu->pdu_data == NULL) 1004 log_err(1, "malloc"); 1005 1006 bzero(&req, sizeof(req)); 1007 1008 req.type = CTL_ISCSI_RECEIVE; 1009 req.data.receive.connection_id = pdu->pdu_connection->conn_socket; 1010 req.data.receive.bhs = pdu->pdu_bhs; 1011 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH; 1012 req.data.receive.data_segment = pdu->pdu_data; 1013 1014 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1015 log_err(1, "error issuing CTL_ISCSI ioctl; " 1016 "dropping connection"); 1017 } 1018 1019 if (req.status != CTL_ISCSI_OK) { 1020 log_errx(1, "error returned from CTL iSCSI receive: " 1021 "%s; dropping connection", req.error_str); 1022 } 1023 1024} 1025 1026#endif /* ICL_KERNEL_PROXY */ 1027 1028/* 1029 * XXX: I CANT INTO LATIN 1030 */ 1031void 1032kernel_capsicate(void) 1033{ 1034 int error; 1035 cap_rights_t rights; 1036 const unsigned long cmds[] = { CTL_ISCSI }; 1037 1038 cap_rights_init(&rights, CAP_IOCTL); 1039 error = cap_rights_limit(ctl_fd, &rights); 1040 if (error != 0 && errno != ENOSYS) 1041 log_err(1, "cap_rights_limit"); 1042 1043 error = cap_ioctls_limit(ctl_fd, cmds, 1044 sizeof(cmds) / sizeof(cmds[0])); 1045 if (error != 0 && errno != ENOSYS) 1046 log_err(1, "cap_ioctls_limit"); 1047 1048 error = cap_enter(); 1049 if (error != 0 && errno != ENOSYS) 1050 log_err(1, "cap_enter"); 1051 1052 if (cap_sandboxed()) 1053 log_debugx("Capsicum capability mode enabled"); 1054 else 1055 log_warnx("Capsicum capability mode not supported"); 1056} 1057 1058