kernel.c revision 284908
1/*- 2 * Copyright (c) 2003, 2004 Silicon Graphics International Corp. 3 * Copyright (c) 1997-2007 Kenneth D. Merry 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * Portions of this software were developed by Edward Tomasz Napierala 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification. 16 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 17 * substantially similar to the "NO WARRANTY" disclaimer below 18 * ("Disclaimer") and any redistribution must be conditioned upon 19 * including a substantially similar Disclaimer requirement for further 20 * binary redistribution. 21 * 22 * NO WARRANTY 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGES. 34 * 35 */ 36 37#include <sys/cdefs.h> 38__FBSDID("$FreeBSD: stable/10/usr.sbin/ctld/kernel.c 284908 2015-06-28 09:41:10Z 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 *ctld_name; 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 *port_name; 125 int pp; 126 int vp; 127 int cfiscsi_state; 128 char *cfiscsi_target; 129 uint16_t cfiscsi_portal_group_tag; 130 char *ctld_portal_group_name; 131 STAILQ_HEAD(,cctl_lun_nv) attr_list; 132 STAILQ_ENTRY(cctl_port) links; 133}; 134 135struct cctl_devlist_data { 136 int num_luns; 137 STAILQ_HEAD(,cctl_lun) lun_list; 138 struct cctl_lun *cur_lun; 139 int num_ports; 140 STAILQ_HEAD(,cctl_port) port_list; 141 struct cctl_port *cur_port; 142 int level; 143 struct sbuf *cur_sb[32]; 144}; 145 146static void 147cctl_start_element(void *user_data, const char *name, const char **attr) 148{ 149 int i; 150 struct cctl_devlist_data *devlist; 151 struct cctl_lun *cur_lun; 152 153 devlist = (struct cctl_devlist_data *)user_data; 154 cur_lun = devlist->cur_lun; 155 devlist->level++; 156 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 157 sizeof(devlist->cur_sb[0]))) 158 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 159 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 160 161 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 162 if (devlist->cur_sb[devlist->level] == NULL) 163 log_err(1, "%s: unable to allocate sbuf", __func__); 164 165 if (strcmp(name, "lun") == 0) { 166 if (cur_lun != NULL) 167 log_errx(1, "%s: improper lun element nesting", 168 __func__); 169 170 cur_lun = calloc(1, sizeof(*cur_lun)); 171 if (cur_lun == NULL) 172 log_err(1, "%s: cannot allocate %zd bytes", __func__, 173 sizeof(*cur_lun)); 174 175 devlist->num_luns++; 176 devlist->cur_lun = cur_lun; 177 178 STAILQ_INIT(&cur_lun->attr_list); 179 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links); 180 181 for (i = 0; attr[i] != NULL; i += 2) { 182 if (strcmp(attr[i], "id") == 0) { 183 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0); 184 } else { 185 log_errx(1, "%s: invalid LUN attribute %s = %s", 186 __func__, attr[i], attr[i+1]); 187 } 188 } 189 } 190} 191 192static void 193cctl_end_element(void *user_data, const char *name) 194{ 195 struct cctl_devlist_data *devlist; 196 struct cctl_lun *cur_lun; 197 char *str; 198 199 devlist = (struct cctl_devlist_data *)user_data; 200 cur_lun = devlist->cur_lun; 201 202 if ((cur_lun == NULL) 203 && (strcmp(name, "ctllunlist") != 0)) 204 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name); 205 206 if (devlist->cur_sb[devlist->level] == NULL) 207 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 208 devlist->level, name); 209 210 sbuf_finish(devlist->cur_sb[devlist->level]); 211 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 212 213 if (strlen(str) == 0) { 214 free(str); 215 str = NULL; 216 } 217 218 sbuf_delete(devlist->cur_sb[devlist->level]); 219 devlist->cur_sb[devlist->level] = NULL; 220 devlist->level--; 221 222 if (strcmp(name, "backend_type") == 0) { 223 cur_lun->backend_type = str; 224 str = NULL; 225 } else if (strcmp(name, "size") == 0) { 226 cur_lun->size_blocks = strtoull(str, NULL, 0); 227 } else if (strcmp(name, "blocksize") == 0) { 228 cur_lun->blocksize = strtoul(str, NULL, 0); 229 } else if (strcmp(name, "serial_number") == 0) { 230 cur_lun->serial_number = str; 231 str = NULL; 232 } else if (strcmp(name, "device_id") == 0) { 233 cur_lun->device_id = str; 234 str = NULL; 235 } else if (strcmp(name, "ctld_name") == 0) { 236 cur_lun->ctld_name = str; 237 str = NULL; 238 } else if (strcmp(name, "lun") == 0) { 239 devlist->cur_lun = NULL; 240 } else if (strcmp(name, "ctllunlist") == 0) { 241 /* Nothing. */ 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, "port_name") == 0) { 337 cur_port->port_name = str; 338 str = NULL; 339 } else if (strcmp(name, "physical_port") == 0) { 340 cur_port->pp = strtoul(str, NULL, 0); 341 } else if (strcmp(name, "virtual_port") == 0) { 342 cur_port->vp = strtoul(str, NULL, 0); 343 } else if (strcmp(name, "cfiscsi_target") == 0) { 344 cur_port->cfiscsi_target = str; 345 str = NULL; 346 } else if (strcmp(name, "cfiscsi_state") == 0) { 347 cur_port->cfiscsi_state = strtoul(str, NULL, 0); 348 } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) { 349 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0); 350 } else if (strcmp(name, "ctld_portal_group_name") == 0) { 351 cur_port->ctld_portal_group_name = str; 352 str = NULL; 353 } else if (strcmp(name, "targ_port") == 0) { 354 devlist->cur_port = NULL; 355 } else if (strcmp(name, "ctlportlist") == 0) { 356 /* Nothing. */ 357 } else { 358 struct cctl_lun_nv *nv; 359 360 nv = calloc(1, sizeof(*nv)); 361 if (nv == NULL) 362 log_err(1, "%s: can't allocate %zd bytes for nv pair", 363 __func__, sizeof(*nv)); 364 365 nv->name = checked_strdup(name); 366 367 nv->value = str; 368 str = NULL; 369 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links); 370 } 371 372 free(str); 373} 374 375static void 376cctl_char_handler(void *user_data, const XML_Char *str, int len) 377{ 378 struct cctl_devlist_data *devlist; 379 380 devlist = (struct cctl_devlist_data *)user_data; 381 382 sbuf_bcat(devlist->cur_sb[devlist->level], str, len); 383} 384 385struct conf * 386conf_new_from_kernel(void) 387{ 388 struct conf *conf = NULL; 389 struct target *targ; 390 struct portal_group *pg; 391 struct pport *pp; 392 struct port *cp; 393 struct lun *cl; 394 struct lun_option *lo; 395 struct ctl_lun_list list; 396 struct cctl_devlist_data devlist; 397 struct cctl_lun *lun; 398 struct cctl_port *port; 399 XML_Parser parser; 400 char *str, *name; 401 int len, retval; 402 403 bzero(&devlist, sizeof(devlist)); 404 STAILQ_INIT(&devlist.lun_list); 405 STAILQ_INIT(&devlist.port_list); 406 407 log_debugx("obtaining previously configured CTL luns from the kernel"); 408 409 str = NULL; 410 len = 4096; 411retry: 412 str = realloc(str, len); 413 if (str == NULL) 414 log_err(1, "realloc"); 415 416 bzero(&list, sizeof(list)); 417 list.alloc_len = len; 418 list.status = CTL_LUN_LIST_NONE; 419 list.lun_xml = str; 420 421 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) { 422 log_warn("error issuing CTL_LUN_LIST ioctl"); 423 free(str); 424 return (NULL); 425 } 426 427 if (list.status == CTL_LUN_LIST_ERROR) { 428 log_warnx("error returned from CTL_LUN_LIST ioctl: %s", 429 list.error_str); 430 free(str); 431 return (NULL); 432 } 433 434 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 435 len = len << 1; 436 goto retry; 437 } 438 439 parser = XML_ParserCreate(NULL); 440 if (parser == NULL) { 441 log_warnx("unable to create XML parser"); 442 free(str); 443 return (NULL); 444 } 445 446 XML_SetUserData(parser, &devlist); 447 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element); 448 XML_SetCharacterDataHandler(parser, cctl_char_handler); 449 450 retval = XML_Parse(parser, str, strlen(str), 1); 451 XML_ParserFree(parser); 452 free(str); 453 if (retval != 1) { 454 log_warnx("XML_Parse failed"); 455 return (NULL); 456 } 457 458 str = NULL; 459 len = 4096; 460retry_port: 461 str = realloc(str, len); 462 if (str == NULL) 463 log_err(1, "realloc"); 464 465 bzero(&list, sizeof(list)); 466 list.alloc_len = len; 467 list.status = CTL_LUN_LIST_NONE; 468 list.lun_xml = str; 469 470 if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) { 471 log_warn("error issuing CTL_PORT_LIST ioctl"); 472 free(str); 473 return (NULL); 474 } 475 476 if (list.status == CTL_PORT_LIST_ERROR) { 477 log_warnx("error returned from CTL_PORT_LIST ioctl: %s", 478 list.error_str); 479 free(str); 480 return (NULL); 481 } 482 483 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 484 len = len << 1; 485 goto retry_port; 486 } 487 488 parser = XML_ParserCreate(NULL); 489 if (parser == NULL) { 490 log_warnx("unable to create XML parser"); 491 free(str); 492 return (NULL); 493 } 494 495 XML_SetUserData(parser, &devlist); 496 XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement); 497 XML_SetCharacterDataHandler(parser, cctl_char_handler); 498 499 retval = XML_Parse(parser, str, strlen(str), 1); 500 XML_ParserFree(parser); 501 free(str); 502 if (retval != 1) { 503 log_warnx("XML_Parse failed"); 504 return (NULL); 505 } 506 507 conf = conf_new(); 508 509 name = NULL; 510 STAILQ_FOREACH(port, &devlist.port_list, links) { 511 if (name) 512 free(name); 513 if (port->pp == 0 && port->vp == 0) 514 name = checked_strdup(port->port_name); 515 else if (port->vp == 0) 516 asprintf(&name, "%s/%d", port->port_name, port->pp); 517 else 518 asprintf(&name, "%s/%d/%d", port->port_name, port->pp, 519 port->vp); 520 521 if (port->cfiscsi_target == NULL) { 522 log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ", 523 port->port_id, name); 524 pp = pport_find(conf, name); 525 if (pp == NULL) { 526#if 0 527 log_debugx("found new kernel port %u \"%s\"", 528 port->port_id, name); 529#endif 530 pp = pport_new(conf, name, port->port_id); 531 if (pp == NULL) { 532 log_warnx("pport_new failed"); 533 continue; 534 } 535 } 536 continue; 537 } 538 if (port->cfiscsi_state != 1) { 539 log_debugx("CTL port %ju is not active (%d); ignoring", 540 (uintmax_t)port->port_id, port->cfiscsi_state); 541 continue; 542 } 543 544 targ = target_find(conf, port->cfiscsi_target); 545 if (targ == NULL) { 546#if 0 547 log_debugx("found new kernel target %s for CTL port %ld", 548 port->cfiscsi_target, port->port_id); 549#endif 550 targ = target_new(conf, port->cfiscsi_target); 551 if (targ == NULL) { 552 log_warnx("target_new failed"); 553 continue; 554 } 555 } 556 557 if (port->ctld_portal_group_name == NULL) 558 continue; 559 pg = portal_group_find(conf, port->ctld_portal_group_name); 560 if (pg == NULL) { 561#if 0 562 log_debugx("found new kernel portal group %s for CTL port %ld", 563 port->ctld_portal_group_name, port->port_id); 564#endif 565 pg = portal_group_new(conf, port->ctld_portal_group_name); 566 if (pg == NULL) { 567 log_warnx("portal_group_new failed"); 568 continue; 569 } 570 } 571 pg->pg_tag = port->cfiscsi_portal_group_tag; 572 cp = port_new(conf, targ, pg); 573 if (cp == NULL) { 574 log_warnx("port_new failed"); 575 continue; 576 } 577 cp->p_ctl_port = port->port_id; 578 } 579 if (name) 580 free(name); 581 582 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 583 struct cctl_lun_nv *nv; 584 585 if (lun->ctld_name == NULL) { 586 log_debugx("CTL lun %ju wasn't managed by ctld; " 587 "ignoring", (uintmax_t)lun->lun_id); 588 continue; 589 } 590 591 cl = lun_find(conf, lun->ctld_name); 592 if (cl != NULL) { 593 log_warnx("found CTL lun %ju \"%s\", " 594 "also backed by CTL lun %d; ignoring", 595 (uintmax_t)lun->lun_id, lun->ctld_name, 596 cl->l_ctl_lun); 597 continue; 598 } 599 600 log_debugx("found CTL lun %ju \"%s\"", 601 (uintmax_t)lun->lun_id, lun->ctld_name); 602 603 cl = lun_new(conf, lun->ctld_name); 604 if (cl == NULL) { 605 log_warnx("lun_new failed"); 606 continue; 607 } 608 lun_set_backend(cl, lun->backend_type); 609 lun_set_blocksize(cl, lun->blocksize); 610 lun_set_device_id(cl, lun->device_id); 611 lun_set_serial(cl, lun->serial_number); 612 lun_set_size(cl, lun->size_blocks * cl->l_blocksize); 613 lun_set_ctl_lun(cl, lun->lun_id); 614 615 STAILQ_FOREACH(nv, &lun->attr_list, links) { 616 if (strcmp(nv->name, "file") == 0 || 617 strcmp(nv->name, "dev") == 0) { 618 lun_set_path(cl, nv->value); 619 continue; 620 } 621 lo = lun_option_new(cl, nv->name, nv->value); 622 if (lo == NULL) 623 log_warnx("unable to add CTL lun option %s " 624 "for CTL lun %ju \"%s\"", 625 nv->name, (uintmax_t) lun->lun_id, 626 cl->l_name); 627 } 628 } 629 630 return (conf); 631} 632 633static void 634str_arg(struct ctl_be_arg *arg, const char *name, const char *value) 635{ 636 637 arg->namelen = strlen(name) + 1; 638 arg->name = __DECONST(char *, name); 639 arg->vallen = strlen(value) + 1; 640 arg->value = __DECONST(char *, value); 641 arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD; 642} 643 644int 645kernel_lun_add(struct lun *lun) 646{ 647 struct lun_option *lo; 648 struct ctl_lun_req req; 649 int error, i, num_options; 650 651 bzero(&req, sizeof(req)); 652 653 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 654 req.reqtype = CTL_LUNREQ_CREATE; 655 656 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 657 658 if (lun->l_size != 0) 659 req.reqdata.create.lun_size_bytes = lun->l_size; 660 661 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 662 req.reqdata.create.device_type = T_DIRECT; 663 664 if (lun->l_serial != NULL) { 665 strncpy(req.reqdata.create.serial_num, lun->l_serial, 666 sizeof(req.reqdata.create.serial_num)); 667 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 668 } 669 670 if (lun->l_device_id != NULL) { 671 strncpy(req.reqdata.create.device_id, lun->l_device_id, 672 sizeof(req.reqdata.create.device_id)); 673 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 674 } 675 676 if (lun->l_path != NULL) { 677 lo = lun_option_find(lun, "file"); 678 if (lo != NULL) { 679 lun_option_set(lo, lun->l_path); 680 } else { 681 lo = lun_option_new(lun, "file", lun->l_path); 682 assert(lo != NULL); 683 } 684 } 685 686 lo = lun_option_find(lun, "ctld_name"); 687 if (lo != NULL) { 688 lun_option_set(lo, lun->l_name); 689 } else { 690 lo = lun_option_new(lun, "ctld_name", lun->l_name); 691 assert(lo != NULL); 692 } 693 694 lo = lun_option_find(lun, "scsiname"); 695 if (lo == NULL && lun->l_scsiname != NULL) { 696 lo = lun_option_new(lun, "scsiname", lun->l_scsiname); 697 assert(lo != NULL); 698 } 699 700 num_options = 0; 701 TAILQ_FOREACH(lo, &lun->l_options, lo_next) 702 num_options++; 703 704 req.num_be_args = num_options; 705 if (num_options > 0) { 706 req.be_args = malloc(num_options * sizeof(*req.be_args)); 707 if (req.be_args == NULL) { 708 log_warn("error allocating %zd bytes", 709 num_options * sizeof(*req.be_args)); 710 return (1); 711 } 712 713 i = 0; 714 TAILQ_FOREACH(lo, &lun->l_options, lo_next) { 715 str_arg(&req.be_args[i], lo->lo_name, lo->lo_value); 716 i++; 717 } 718 assert(i == num_options); 719 } 720 721 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 722 free(req.be_args); 723 if (error != 0) { 724 log_warn("error issuing CTL_LUN_REQ ioctl"); 725 return (1); 726 } 727 728 switch (req.status) { 729 case CTL_LUN_ERROR: 730 log_warnx("LUN creation error: %s", req.error_str); 731 return (1); 732 case CTL_LUN_WARNING: 733 log_warnx("LUN creation warning: %s", req.error_str); 734 break; 735 case CTL_LUN_OK: 736 break; 737 default: 738 log_warnx("unknown LUN creation status: %d", 739 req.status); 740 return (1); 741 } 742 743 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id); 744 return (0); 745} 746 747int 748kernel_lun_resize(struct lun *lun) 749{ 750 struct ctl_lun_req req; 751 752 bzero(&req, sizeof(req)); 753 754 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 755 req.reqtype = CTL_LUNREQ_MODIFY; 756 757 req.reqdata.modify.lun_id = lun->l_ctl_lun; 758 req.reqdata.modify.lun_size_bytes = lun->l_size; 759 760 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 761 log_warn("error issuing CTL_LUN_REQ ioctl"); 762 return (1); 763 } 764 765 switch (req.status) { 766 case CTL_LUN_ERROR: 767 log_warnx("LUN modification error: %s", req.error_str); 768 return (1); 769 case CTL_LUN_WARNING: 770 log_warnx("LUN modification warning: %s", req.error_str); 771 break; 772 case CTL_LUN_OK: 773 break; 774 default: 775 log_warnx("unknown LUN modification status: %d", 776 req.status); 777 return (1); 778 } 779 780 return (0); 781} 782 783int 784kernel_lun_remove(struct lun *lun) 785{ 786 struct ctl_lun_req req; 787 788 bzero(&req, sizeof(req)); 789 790 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 791 req.reqtype = CTL_LUNREQ_RM; 792 793 req.reqdata.rm.lun_id = lun->l_ctl_lun; 794 795 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 796 log_warn("error issuing CTL_LUN_REQ ioctl"); 797 return (1); 798 } 799 800 switch (req.status) { 801 case CTL_LUN_ERROR: 802 log_warnx("LUN removal error: %s", req.error_str); 803 return (1); 804 case CTL_LUN_WARNING: 805 log_warnx("LUN removal warning: %s", req.error_str); 806 break; 807 case CTL_LUN_OK: 808 break; 809 default: 810 log_warnx("unknown LUN removal status: %d", req.status); 811 return (1); 812 } 813 814 return (0); 815} 816 817void 818kernel_handoff(struct connection *conn) 819{ 820 struct ctl_iscsi req; 821 822 bzero(&req, sizeof(req)); 823 824 req.type = CTL_ISCSI_HANDOFF; 825 strlcpy(req.data.handoff.initiator_name, 826 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 827 strlcpy(req.data.handoff.initiator_addr, 828 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 829 if (conn->conn_initiator_alias != NULL) { 830 strlcpy(req.data.handoff.initiator_alias, 831 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 832 } 833 memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid, 834 sizeof(req.data.handoff.initiator_isid)); 835 strlcpy(req.data.handoff.target_name, 836 conn->conn_target->t_name, sizeof(req.data.handoff.target_name)); 837#ifdef ICL_KERNEL_PROXY 838 if (proxy_mode) 839 req.data.handoff.connection_id = conn->conn_socket; 840 else 841 req.data.handoff.socket = conn->conn_socket; 842#else 843 req.data.handoff.socket = conn->conn_socket; 844#endif 845 req.data.handoff.portal_group_tag = 846 conn->conn_portal->p_portal_group->pg_tag; 847 if (conn->conn_header_digest == CONN_DIGEST_CRC32C) 848 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 849 if (conn->conn_data_digest == CONN_DIGEST_CRC32C) 850 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 851 req.data.handoff.cmdsn = conn->conn_cmdsn; 852 req.data.handoff.statsn = conn->conn_statsn; 853 req.data.handoff.max_recv_data_segment_length = 854 conn->conn_max_data_segment_length; 855 req.data.handoff.max_burst_length = conn->conn_max_burst_length; 856 req.data.handoff.immediate_data = conn->conn_immediate_data; 857 858 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 859 log_err(1, "error issuing CTL_ISCSI ioctl; " 860 "dropping connection"); 861 } 862 863 if (req.status != CTL_ISCSI_OK) { 864 log_errx(1, "error returned from CTL iSCSI handoff request: " 865 "%s; dropping connection", req.error_str); 866 } 867} 868 869int 870kernel_port_add(struct port *port) 871{ 872 struct ctl_port_entry entry; 873 struct ctl_req req; 874 struct ctl_lun_map lm; 875 struct target *targ = port->p_target; 876 struct portal_group *pg = port->p_portal_group; 877 char tagstr[16]; 878 int error, i, n; 879 880 /* Create iSCSI port. */ 881 if (port->p_portal_group) { 882 bzero(&req, sizeof(req)); 883 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 884 req.reqtype = CTL_REQ_CREATE; 885 req.num_args = 5; 886 req.args = malloc(req.num_args * sizeof(*req.args)); 887 if (req.args == NULL) 888 log_err(1, "malloc"); 889 n = 0; 890 req.args[n].namelen = sizeof("port_id"); 891 req.args[n].name = __DECONST(char *, "port_id"); 892 req.args[n].vallen = sizeof(port->p_ctl_port); 893 req.args[n].value = &port->p_ctl_port; 894 req.args[n++].flags = CTL_BEARG_WR; 895 str_arg(&req.args[n++], "cfiscsi_target", targ->t_name); 896 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag); 897 str_arg(&req.args[n++], "cfiscsi_portal_group_tag", tagstr); 898 if (targ->t_alias) 899 str_arg(&req.args[n++], "cfiscsi_target_alias", targ->t_alias); 900 str_arg(&req.args[n++], "ctld_portal_group_name", pg->pg_name); 901 req.num_args = n; 902 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 903 free(req.args); 904 if (error != 0) { 905 log_warn("error issuing CTL_PORT_REQ ioctl"); 906 return (1); 907 } 908 if (req.status == CTL_LUN_ERROR) { 909 log_warnx("error returned from port creation request: %s", 910 req.error_str); 911 return (1); 912 } 913 if (req.status != CTL_LUN_OK) { 914 log_warnx("unknown port creation request status %d", 915 req.status); 916 return (1); 917 } 918 } else if (port->p_pport) { 919 port->p_ctl_port = port->p_pport->pp_ctl_port; 920 921 if (strncmp(targ->t_name, "naa.", 4) == 0 && 922 strlen(targ->t_name) == 20) { 923 bzero(&entry, sizeof(entry)); 924 entry.port_type = CTL_PORT_NONE; 925 entry.targ_port = port->p_ctl_port; 926 entry.flags |= CTL_PORT_WWNN_VALID; 927 entry.wwnn = strtoull(targ->t_name + 4, NULL, 16); 928 if (ioctl(ctl_fd, CTL_SET_PORT_WWNS, &entry) == -1) 929 log_warn("CTL_SET_PORT_WWNS ioctl failed"); 930 } 931 } 932 933 /* Explicitly enable mapping to block any access except allowed. */ 934 lm.port = port->p_ctl_port; 935 lm.plun = UINT32_MAX; 936 lm.lun = 0; 937 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 938 if (error != 0) 939 log_warn("CTL_LUN_MAP ioctl failed"); 940 941 /* Map configured LUNs */ 942 for (i = 0; i < MAX_LUNS; i++) { 943 if (targ->t_luns[i] == NULL) 944 continue; 945 lm.port = port->p_ctl_port; 946 lm.plun = i; 947 lm.lun = targ->t_luns[i]->l_ctl_lun; 948 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 949 if (error != 0) 950 log_warn("CTL_LUN_MAP ioctl failed"); 951 } 952 953 /* Enable port */ 954 bzero(&entry, sizeof(entry)); 955 entry.targ_port = port->p_ctl_port; 956 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 957 if (error != 0) { 958 log_warn("CTL_ENABLE_PORT ioctl failed"); 959 return (-1); 960 } 961 962 return (0); 963} 964 965int 966kernel_port_update(struct port *port) 967{ 968 struct ctl_lun_map lm; 969 struct target *targ = port->p_target; 970 int error, i; 971 972 /* Map configured LUNs and unmap others */ 973 for (i = 0; i < MAX_LUNS; i++) { 974 lm.port = port->p_ctl_port; 975 lm.plun = i; 976 if (targ->t_luns[i] == NULL) 977 lm.lun = UINT32_MAX; 978 else 979 lm.lun = targ->t_luns[i]->l_ctl_lun; 980 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 981 if (error != 0) 982 log_warn("CTL_LUN_MAP ioctl failed"); 983 } 984 return (0); 985} 986 987int 988kernel_port_remove(struct port *port) 989{ 990 struct ctl_port_entry entry; 991 struct ctl_lun_map lm; 992 struct ctl_req req; 993 char tagstr[16]; 994 struct target *targ = port->p_target; 995 struct portal_group *pg = port->p_portal_group; 996 int error; 997 998 /* Disable port */ 999 bzero(&entry, sizeof(entry)); 1000 entry.targ_port = port->p_ctl_port; 1001 error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry); 1002 if (error != 0) { 1003 log_warn("CTL_DISABLE_PORT ioctl failed"); 1004 return (-1); 1005 } 1006 1007 /* Remove iSCSI port. */ 1008 if (port->p_portal_group) { 1009 bzero(&req, sizeof(req)); 1010 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 1011 req.reqtype = CTL_REQ_REMOVE; 1012 req.num_args = 2; 1013 req.args = malloc(req.num_args * sizeof(*req.args)); 1014 if (req.args == NULL) 1015 log_err(1, "malloc"); 1016 str_arg(&req.args[0], "cfiscsi_target", targ->t_name); 1017 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag); 1018 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr); 1019 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 1020 free(req.args); 1021 if (error != 0) { 1022 log_warn("error issuing CTL_PORT_REQ ioctl"); 1023 return (1); 1024 } 1025 if (req.status == CTL_LUN_ERROR) { 1026 log_warnx("error returned from port removal request: %s", 1027 req.error_str); 1028 return (1); 1029 } 1030 if (req.status != CTL_LUN_OK) { 1031 log_warnx("unknown port removal request status %d", 1032 req.status); 1033 return (1); 1034 } 1035 } else { 1036 /* Disable LUN mapping. */ 1037 lm.port = port->p_ctl_port; 1038 lm.plun = UINT32_MAX; 1039 lm.lun = UINT32_MAX; 1040 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1041 if (error != 0) 1042 log_warn("CTL_LUN_MAP ioctl failed"); 1043 } 1044 return (0); 1045} 1046 1047#ifdef ICL_KERNEL_PROXY 1048void 1049kernel_listen(struct addrinfo *ai, bool iser, int portal_id) 1050{ 1051 struct ctl_iscsi req; 1052 1053 bzero(&req, sizeof(req)); 1054 1055 req.type = CTL_ISCSI_LISTEN; 1056 req.data.listen.iser = iser; 1057 req.data.listen.domain = ai->ai_family; 1058 req.data.listen.socktype = ai->ai_socktype; 1059 req.data.listen.protocol = ai->ai_protocol; 1060 req.data.listen.addr = ai->ai_addr; 1061 req.data.listen.addrlen = ai->ai_addrlen; 1062 req.data.listen.portal_id = portal_id; 1063 1064 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1065 log_err(1, "error issuing CTL_ISCSI ioctl"); 1066 1067 if (req.status != CTL_ISCSI_OK) { 1068 log_errx(1, "error returned from CTL iSCSI listen: %s", 1069 req.error_str); 1070 } 1071} 1072 1073void 1074kernel_accept(int *connection_id, int *portal_id, 1075 struct sockaddr *client_sa, socklen_t *client_salen) 1076{ 1077 struct ctl_iscsi req; 1078 struct sockaddr_storage ss; 1079 1080 bzero(&req, sizeof(req)); 1081 1082 req.type = CTL_ISCSI_ACCEPT; 1083 req.data.accept.initiator_addr = (struct sockaddr *)&ss; 1084 1085 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1086 log_err(1, "error issuing CTL_ISCSI ioctl"); 1087 1088 if (req.status != CTL_ISCSI_OK) { 1089 log_errx(1, "error returned from CTL iSCSI accept: %s", 1090 req.error_str); 1091 } 1092 1093 *connection_id = req.data.accept.connection_id; 1094 *portal_id = req.data.accept.portal_id; 1095 *client_salen = req.data.accept.initiator_addrlen; 1096 memcpy(client_sa, &ss, *client_salen); 1097} 1098 1099void 1100kernel_send(struct pdu *pdu) 1101{ 1102 struct ctl_iscsi req; 1103 1104 bzero(&req, sizeof(req)); 1105 1106 req.type = CTL_ISCSI_SEND; 1107 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 1108 req.data.send.bhs = pdu->pdu_bhs; 1109 req.data.send.data_segment_len = pdu->pdu_data_len; 1110 req.data.send.data_segment = pdu->pdu_data; 1111 1112 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1113 log_err(1, "error issuing CTL_ISCSI ioctl; " 1114 "dropping connection"); 1115 } 1116 1117 if (req.status != CTL_ISCSI_OK) { 1118 log_errx(1, "error returned from CTL iSCSI send: " 1119 "%s; dropping connection", req.error_str); 1120 } 1121} 1122 1123void 1124kernel_receive(struct pdu *pdu) 1125{ 1126 struct ctl_iscsi req; 1127 1128 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH); 1129 if (pdu->pdu_data == NULL) 1130 log_err(1, "malloc"); 1131 1132 bzero(&req, sizeof(req)); 1133 1134 req.type = CTL_ISCSI_RECEIVE; 1135 req.data.receive.connection_id = pdu->pdu_connection->conn_socket; 1136 req.data.receive.bhs = pdu->pdu_bhs; 1137 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH; 1138 req.data.receive.data_segment = pdu->pdu_data; 1139 1140 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1141 log_err(1, "error issuing CTL_ISCSI ioctl; " 1142 "dropping connection"); 1143 } 1144 1145 if (req.status != CTL_ISCSI_OK) { 1146 log_errx(1, "error returned from CTL iSCSI receive: " 1147 "%s; dropping connection", req.error_str); 1148 } 1149 1150} 1151 1152#endif /* ICL_KERNEL_PROXY */ 1153 1154/* 1155 * XXX: I CANT INTO LATIN 1156 */ 1157void 1158kernel_capsicate(void) 1159{ 1160 int error; 1161 cap_rights_t rights; 1162 const unsigned long cmds[] = { CTL_ISCSI }; 1163 1164 cap_rights_init(&rights, CAP_IOCTL); 1165 error = cap_rights_limit(ctl_fd, &rights); 1166 if (error != 0 && errno != ENOSYS) 1167 log_err(1, "cap_rights_limit"); 1168 1169 error = cap_ioctls_limit(ctl_fd, cmds, 1170 sizeof(cmds) / sizeof(cmds[0])); 1171 if (error != 0 && errno != ENOSYS) 1172 log_err(1, "cap_ioctls_limit"); 1173 1174 error = cap_enter(); 1175 if (error != 0 && errno != ENOSYS) 1176 log_err(1, "cap_enter"); 1177 1178 if (cap_sandboxed()) 1179 log_debugx("Capsicum capability mode enabled"); 1180 else 1181 log_warnx("Capsicum capability mode not supported"); 1182} 1183 1184