kernel.c revision 288810
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 288810 2015-10-05 11:30:18Z mav $"); 39 40#include <sys/ioctl.h> 41#include <sys/types.h> 42#include <sys/stat.h> 43#include <sys/param.h> 44#include <sys/linker.h> 45#include <sys/queue.h> 46#include <sys/callout.h> 47#include <sys/sbuf.h> 48#include <sys/capsicum.h> 49#include <assert.h> 50#include <bsdxml.h> 51#include <ctype.h> 52#include <errno.h> 53#include <fcntl.h> 54#include <stdint.h> 55#include <stdio.h> 56#include <stdlib.h> 57#include <string.h> 58#include <strings.h> 59#include <cam/scsi/scsi_all.h> 60#include <cam/scsi/scsi_message.h> 61#include <cam/ctl/ctl.h> 62#include <cam/ctl/ctl_io.h> 63#include <cam/ctl/ctl_backend.h> 64#include <cam/ctl/ctl_ioctl.h> 65#include <cam/ctl/ctl_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 uint8_t device_type; 112 uint64_t size_blocks; 113 uint32_t blocksize; 114 char *serial_number; 115 char *device_id; 116 char *ctld_name; 117 STAILQ_HEAD(,cctl_lun_nv) attr_list; 118 STAILQ_ENTRY(cctl_lun) links; 119}; 120 121struct cctl_port { 122 uint32_t port_id; 123 char *port_frontend; 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, "lun_type") == 0) { 226 cur_lun->device_type = strtoull(str, NULL, 0); 227 } else if (strcmp(name, "size") == 0) { 228 cur_lun->size_blocks = strtoull(str, NULL, 0); 229 } else if (strcmp(name, "blocksize") == 0) { 230 cur_lun->blocksize = strtoul(str, NULL, 0); 231 } else if (strcmp(name, "serial_number") == 0) { 232 cur_lun->serial_number = str; 233 str = NULL; 234 } else if (strcmp(name, "device_id") == 0) { 235 cur_lun->device_id = str; 236 str = NULL; 237 } else if (strcmp(name, "ctld_name") == 0) { 238 cur_lun->ctld_name = str; 239 str = NULL; 240 } else if (strcmp(name, "lun") == 0) { 241 devlist->cur_lun = NULL; 242 } else if (strcmp(name, "ctllunlist") == 0) { 243 /* Nothing. */ 244 } else { 245 struct cctl_lun_nv *nv; 246 247 nv = calloc(1, sizeof(*nv)); 248 if (nv == NULL) 249 log_err(1, "%s: can't allocate %zd bytes for nv pair", 250 __func__, sizeof(*nv)); 251 252 nv->name = checked_strdup(name); 253 254 nv->value = str; 255 str = NULL; 256 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links); 257 } 258 259 free(str); 260} 261 262static void 263cctl_start_pelement(void *user_data, const char *name, const char **attr) 264{ 265 int i; 266 struct cctl_devlist_data *devlist; 267 struct cctl_port *cur_port; 268 269 devlist = (struct cctl_devlist_data *)user_data; 270 cur_port = devlist->cur_port; 271 devlist->level++; 272 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 273 sizeof(devlist->cur_sb[0]))) 274 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 275 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 276 277 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 278 if (devlist->cur_sb[devlist->level] == NULL) 279 log_err(1, "%s: unable to allocate sbuf", __func__); 280 281 if (strcmp(name, "targ_port") == 0) { 282 if (cur_port != NULL) 283 log_errx(1, "%s: improper port element nesting (%s)", 284 __func__, name); 285 286 cur_port = calloc(1, sizeof(*cur_port)); 287 if (cur_port == NULL) 288 log_err(1, "%s: cannot allocate %zd bytes", __func__, 289 sizeof(*cur_port)); 290 291 devlist->num_ports++; 292 devlist->cur_port = cur_port; 293 294 STAILQ_INIT(&cur_port->attr_list); 295 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links); 296 297 for (i = 0; attr[i] != NULL; i += 2) { 298 if (strcmp(attr[i], "id") == 0) { 299 cur_port->port_id = strtoul(attr[i+1], NULL, 0); 300 } else { 301 log_errx(1, "%s: invalid LUN attribute %s = %s", 302 __func__, attr[i], attr[i+1]); 303 } 304 } 305 } 306} 307 308static void 309cctl_end_pelement(void *user_data, const char *name) 310{ 311 struct cctl_devlist_data *devlist; 312 struct cctl_port *cur_port; 313 char *str; 314 315 devlist = (struct cctl_devlist_data *)user_data; 316 cur_port = devlist->cur_port; 317 318 if ((cur_port == NULL) 319 && (strcmp(name, "ctlportlist") != 0)) 320 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name); 321 322 if (devlist->cur_sb[devlist->level] == NULL) 323 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 324 devlist->level, name); 325 326 sbuf_finish(devlist->cur_sb[devlist->level]); 327 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 328 329 if (strlen(str) == 0) { 330 free(str); 331 str = NULL; 332 } 333 334 sbuf_delete(devlist->cur_sb[devlist->level]); 335 devlist->cur_sb[devlist->level] = NULL; 336 devlist->level--; 337 338 if (strcmp(name, "frontend_type") == 0) { 339 cur_port->port_frontend = str; 340 str = NULL; 341 } else if (strcmp(name, "port_name") == 0) { 342 cur_port->port_name = str; 343 str = NULL; 344 } else if (strcmp(name, "physical_port") == 0) { 345 cur_port->pp = strtoul(str, NULL, 0); 346 } else if (strcmp(name, "virtual_port") == 0) { 347 cur_port->vp = strtoul(str, NULL, 0); 348 } else if (strcmp(name, "cfiscsi_target") == 0) { 349 cur_port->cfiscsi_target = str; 350 str = NULL; 351 } else if (strcmp(name, "cfiscsi_state") == 0) { 352 cur_port->cfiscsi_state = strtoul(str, NULL, 0); 353 } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) { 354 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0); 355 } else if (strcmp(name, "ctld_portal_group_name") == 0) { 356 cur_port->ctld_portal_group_name = str; 357 str = NULL; 358 } else if (strcmp(name, "targ_port") == 0) { 359 devlist->cur_port = NULL; 360 } else if (strcmp(name, "ctlportlist") == 0) { 361 /* Nothing. */ 362 } else { 363 struct cctl_lun_nv *nv; 364 365 nv = calloc(1, sizeof(*nv)); 366 if (nv == NULL) 367 log_err(1, "%s: can't allocate %zd bytes for nv pair", 368 __func__, sizeof(*nv)); 369 370 nv->name = checked_strdup(name); 371 372 nv->value = str; 373 str = NULL; 374 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links); 375 } 376 377 free(str); 378} 379 380static void 381cctl_char_handler(void *user_data, const XML_Char *str, int len) 382{ 383 struct cctl_devlist_data *devlist; 384 385 devlist = (struct cctl_devlist_data *)user_data; 386 387 sbuf_bcat(devlist->cur_sb[devlist->level], str, len); 388} 389 390struct conf * 391conf_new_from_kernel(void) 392{ 393 struct conf *conf = NULL; 394 struct target *targ; 395 struct portal_group *pg; 396 struct pport *pp; 397 struct port *cp; 398 struct lun *cl; 399 struct lun_option *lo; 400 struct ctl_lun_list list; 401 struct cctl_devlist_data devlist; 402 struct cctl_lun *lun; 403 struct cctl_port *port; 404 XML_Parser parser; 405 char *str, *name; 406 int len, retval; 407 408 bzero(&devlist, sizeof(devlist)); 409 STAILQ_INIT(&devlist.lun_list); 410 STAILQ_INIT(&devlist.port_list); 411 412 log_debugx("obtaining previously configured CTL luns from the kernel"); 413 414 str = NULL; 415 len = 4096; 416retry: 417 str = realloc(str, len); 418 if (str == NULL) 419 log_err(1, "realloc"); 420 421 bzero(&list, sizeof(list)); 422 list.alloc_len = len; 423 list.status = CTL_LUN_LIST_NONE; 424 list.lun_xml = str; 425 426 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) { 427 log_warn("error issuing CTL_LUN_LIST ioctl"); 428 free(str); 429 return (NULL); 430 } 431 432 if (list.status == CTL_LUN_LIST_ERROR) { 433 log_warnx("error returned from CTL_LUN_LIST ioctl: %s", 434 list.error_str); 435 free(str); 436 return (NULL); 437 } 438 439 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 440 len = len << 1; 441 goto retry; 442 } 443 444 parser = XML_ParserCreate(NULL); 445 if (parser == NULL) { 446 log_warnx("unable to create XML parser"); 447 free(str); 448 return (NULL); 449 } 450 451 XML_SetUserData(parser, &devlist); 452 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element); 453 XML_SetCharacterDataHandler(parser, cctl_char_handler); 454 455 retval = XML_Parse(parser, str, strlen(str), 1); 456 XML_ParserFree(parser); 457 free(str); 458 if (retval != 1) { 459 log_warnx("XML_Parse failed"); 460 return (NULL); 461 } 462 463 str = NULL; 464 len = 4096; 465retry_port: 466 str = realloc(str, len); 467 if (str == NULL) 468 log_err(1, "realloc"); 469 470 bzero(&list, sizeof(list)); 471 list.alloc_len = len; 472 list.status = CTL_LUN_LIST_NONE; 473 list.lun_xml = str; 474 475 if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) { 476 log_warn("error issuing CTL_PORT_LIST ioctl"); 477 free(str); 478 return (NULL); 479 } 480 481 if (list.status == CTL_LUN_LIST_ERROR) { 482 log_warnx("error returned from CTL_PORT_LIST ioctl: %s", 483 list.error_str); 484 free(str); 485 return (NULL); 486 } 487 488 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 489 len = len << 1; 490 goto retry_port; 491 } 492 493 parser = XML_ParserCreate(NULL); 494 if (parser == NULL) { 495 log_warnx("unable to create XML parser"); 496 free(str); 497 return (NULL); 498 } 499 500 XML_SetUserData(parser, &devlist); 501 XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement); 502 XML_SetCharacterDataHandler(parser, cctl_char_handler); 503 504 retval = XML_Parse(parser, str, strlen(str), 1); 505 XML_ParserFree(parser); 506 free(str); 507 if (retval != 1) { 508 log_warnx("XML_Parse failed"); 509 return (NULL); 510 } 511 512 conf = conf_new(); 513 514 name = NULL; 515 STAILQ_FOREACH(port, &devlist.port_list, links) { 516 if (strcmp(port->port_frontend, "ha") == 0) 517 continue; 518 if (name) 519 free(name); 520 if (port->pp == 0 && port->vp == 0) 521 name = checked_strdup(port->port_name); 522 else if (port->vp == 0) 523 asprintf(&name, "%s/%d", port->port_name, port->pp); 524 else 525 asprintf(&name, "%s/%d/%d", port->port_name, port->pp, 526 port->vp); 527 528 if (port->cfiscsi_target == NULL) { 529 log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ", 530 port->port_id, name); 531 pp = pport_find(conf, name); 532 if (pp == NULL) { 533#if 0 534 log_debugx("found new kernel port %u \"%s\"", 535 port->port_id, name); 536#endif 537 pp = pport_new(conf, name, port->port_id); 538 if (pp == NULL) { 539 log_warnx("pport_new failed"); 540 continue; 541 } 542 } 543 continue; 544 } 545 if (port->cfiscsi_state != 1) { 546 log_debugx("CTL port %ju is not active (%d); ignoring", 547 (uintmax_t)port->port_id, port->cfiscsi_state); 548 continue; 549 } 550 551 targ = target_find(conf, port->cfiscsi_target); 552 if (targ == NULL) { 553#if 0 554 log_debugx("found new kernel target %s for CTL port %ld", 555 port->cfiscsi_target, port->port_id); 556#endif 557 targ = target_new(conf, port->cfiscsi_target); 558 if (targ == NULL) { 559 log_warnx("target_new failed"); 560 continue; 561 } 562 } 563 564 if (port->ctld_portal_group_name == NULL) 565 continue; 566 pg = portal_group_find(conf, port->ctld_portal_group_name); 567 if (pg == NULL) { 568#if 0 569 log_debugx("found new kernel portal group %s for CTL port %ld", 570 port->ctld_portal_group_name, port->port_id); 571#endif 572 pg = portal_group_new(conf, port->ctld_portal_group_name); 573 if (pg == NULL) { 574 log_warnx("portal_group_new failed"); 575 continue; 576 } 577 } 578 pg->pg_tag = port->cfiscsi_portal_group_tag; 579 cp = port_new(conf, targ, pg); 580 if (cp == NULL) { 581 log_warnx("port_new failed"); 582 continue; 583 } 584 cp->p_ctl_port = port->port_id; 585 } 586 if (name) 587 free(name); 588 589 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 590 struct cctl_lun_nv *nv; 591 592 if (lun->ctld_name == NULL) { 593 log_debugx("CTL lun %ju wasn't managed by ctld; " 594 "ignoring", (uintmax_t)lun->lun_id); 595 continue; 596 } 597 598 cl = lun_find(conf, lun->ctld_name); 599 if (cl != NULL) { 600 log_warnx("found CTL lun %ju \"%s\", " 601 "also backed by CTL lun %d; ignoring", 602 (uintmax_t)lun->lun_id, lun->ctld_name, 603 cl->l_ctl_lun); 604 continue; 605 } 606 607 log_debugx("found CTL lun %ju \"%s\"", 608 (uintmax_t)lun->lun_id, lun->ctld_name); 609 610 cl = lun_new(conf, lun->ctld_name); 611 if (cl == NULL) { 612 log_warnx("lun_new failed"); 613 continue; 614 } 615 lun_set_backend(cl, lun->backend_type); 616 lun_set_device_type(cl, lun->device_type); 617 lun_set_blocksize(cl, lun->blocksize); 618 lun_set_device_id(cl, lun->device_id); 619 lun_set_serial(cl, lun->serial_number); 620 lun_set_size(cl, lun->size_blocks * cl->l_blocksize); 621 lun_set_ctl_lun(cl, lun->lun_id); 622 623 STAILQ_FOREACH(nv, &lun->attr_list, links) { 624 if (strcmp(nv->name, "file") == 0 || 625 strcmp(nv->name, "dev") == 0) { 626 lun_set_path(cl, nv->value); 627 continue; 628 } 629 lo = lun_option_new(cl, nv->name, nv->value); 630 if (lo == NULL) 631 log_warnx("unable to add CTL lun option %s " 632 "for CTL lun %ju \"%s\"", 633 nv->name, (uintmax_t) lun->lun_id, 634 cl->l_name); 635 } 636 } 637 638 return (conf); 639} 640 641static void 642str_arg(struct ctl_be_arg *arg, const char *name, const char *value) 643{ 644 645 arg->namelen = strlen(name) + 1; 646 arg->name = __DECONST(char *, name); 647 arg->vallen = strlen(value) + 1; 648 arg->value = __DECONST(char *, value); 649 arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD; 650} 651 652int 653kernel_lun_add(struct lun *lun) 654{ 655 struct lun_option *lo; 656 struct ctl_lun_req req; 657 int error, i, num_options; 658 659 bzero(&req, sizeof(req)); 660 661 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 662 req.reqtype = CTL_LUNREQ_CREATE; 663 664 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 665 666 if (lun->l_size != 0) 667 req.reqdata.create.lun_size_bytes = lun->l_size; 668 669 if (lun->l_ctl_lun >= 0) { 670 req.reqdata.create.req_lun_id = lun->l_ctl_lun; 671 req.reqdata.create.flags |= CTL_LUN_FLAG_ID_REQ; 672 } 673 674 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 675 req.reqdata.create.device_type = lun->l_device_type; 676 677 if (lun->l_serial != NULL) { 678 strncpy(req.reqdata.create.serial_num, lun->l_serial, 679 sizeof(req.reqdata.create.serial_num)); 680 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 681 } 682 683 if (lun->l_device_id != NULL) { 684 strncpy(req.reqdata.create.device_id, lun->l_device_id, 685 sizeof(req.reqdata.create.device_id)); 686 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 687 } 688 689 if (lun->l_path != NULL) { 690 lo = lun_option_find(lun, "file"); 691 if (lo != NULL) { 692 lun_option_set(lo, lun->l_path); 693 } else { 694 lo = lun_option_new(lun, "file", lun->l_path); 695 assert(lo != NULL); 696 } 697 } 698 699 lo = lun_option_find(lun, "ctld_name"); 700 if (lo != NULL) { 701 lun_option_set(lo, lun->l_name); 702 } else { 703 lo = lun_option_new(lun, "ctld_name", lun->l_name); 704 assert(lo != NULL); 705 } 706 707 lo = lun_option_find(lun, "scsiname"); 708 if (lo == NULL && lun->l_scsiname != NULL) { 709 lo = lun_option_new(lun, "scsiname", lun->l_scsiname); 710 assert(lo != NULL); 711 } 712 713 num_options = 0; 714 TAILQ_FOREACH(lo, &lun->l_options, lo_next) 715 num_options++; 716 717 req.num_be_args = num_options; 718 if (num_options > 0) { 719 req.be_args = malloc(num_options * sizeof(*req.be_args)); 720 if (req.be_args == NULL) { 721 log_warn("error allocating %zd bytes", 722 num_options * sizeof(*req.be_args)); 723 return (1); 724 } 725 726 i = 0; 727 TAILQ_FOREACH(lo, &lun->l_options, lo_next) { 728 str_arg(&req.be_args[i], lo->lo_name, lo->lo_value); 729 i++; 730 } 731 assert(i == num_options); 732 } 733 734 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 735 free(req.be_args); 736 if (error != 0) { 737 log_warn("error issuing CTL_LUN_REQ ioctl"); 738 return (1); 739 } 740 741 switch (req.status) { 742 case CTL_LUN_ERROR: 743 log_warnx("LUN creation error: %s", req.error_str); 744 return (1); 745 case CTL_LUN_WARNING: 746 log_warnx("LUN creation warning: %s", req.error_str); 747 break; 748 case CTL_LUN_OK: 749 break; 750 default: 751 log_warnx("unknown LUN creation status: %d", 752 req.status); 753 return (1); 754 } 755 756 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id); 757 return (0); 758} 759 760int 761kernel_lun_modify(struct lun *lun) 762{ 763 struct lun_option *lo; 764 struct ctl_lun_req req; 765 int error, i, num_options; 766 767 bzero(&req, sizeof(req)); 768 769 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 770 req.reqtype = CTL_LUNREQ_MODIFY; 771 772 req.reqdata.modify.lun_id = lun->l_ctl_lun; 773 req.reqdata.modify.lun_size_bytes = lun->l_size; 774 775 num_options = 0; 776 TAILQ_FOREACH(lo, &lun->l_options, lo_next) 777 num_options++; 778 779 req.num_be_args = num_options; 780 if (num_options > 0) { 781 req.be_args = malloc(num_options * sizeof(*req.be_args)); 782 if (req.be_args == NULL) { 783 log_warn("error allocating %zd bytes", 784 num_options * sizeof(*req.be_args)); 785 return (1); 786 } 787 788 i = 0; 789 TAILQ_FOREACH(lo, &lun->l_options, lo_next) { 790 str_arg(&req.be_args[i], lo->lo_name, lo->lo_value); 791 i++; 792 } 793 assert(i == num_options); 794 } 795 796 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 797 free(req.be_args); 798 if (error != 0) { 799 log_warn("error issuing CTL_LUN_REQ ioctl"); 800 return (1); 801 } 802 803 switch (req.status) { 804 case CTL_LUN_ERROR: 805 log_warnx("LUN modification error: %s", req.error_str); 806 return (1); 807 case CTL_LUN_WARNING: 808 log_warnx("LUN modification warning: %s", req.error_str); 809 break; 810 case CTL_LUN_OK: 811 break; 812 default: 813 log_warnx("unknown LUN modification status: %d", 814 req.status); 815 return (1); 816 } 817 818 return (0); 819} 820 821int 822kernel_lun_remove(struct lun *lun) 823{ 824 struct ctl_lun_req req; 825 826 bzero(&req, sizeof(req)); 827 828 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 829 req.reqtype = CTL_LUNREQ_RM; 830 831 req.reqdata.rm.lun_id = lun->l_ctl_lun; 832 833 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 834 log_warn("error issuing CTL_LUN_REQ ioctl"); 835 return (1); 836 } 837 838 switch (req.status) { 839 case CTL_LUN_ERROR: 840 log_warnx("LUN removal error: %s", req.error_str); 841 return (1); 842 case CTL_LUN_WARNING: 843 log_warnx("LUN removal warning: %s", req.error_str); 844 break; 845 case CTL_LUN_OK: 846 break; 847 default: 848 log_warnx("unknown LUN removal status: %d", req.status); 849 return (1); 850 } 851 852 return (0); 853} 854 855void 856kernel_handoff(struct connection *conn) 857{ 858 struct ctl_iscsi req; 859 860 bzero(&req, sizeof(req)); 861 862 req.type = CTL_ISCSI_HANDOFF; 863 strlcpy(req.data.handoff.initiator_name, 864 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 865 strlcpy(req.data.handoff.initiator_addr, 866 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 867 if (conn->conn_initiator_alias != NULL) { 868 strlcpy(req.data.handoff.initiator_alias, 869 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 870 } 871 memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid, 872 sizeof(req.data.handoff.initiator_isid)); 873 strlcpy(req.data.handoff.target_name, 874 conn->conn_target->t_name, sizeof(req.data.handoff.target_name)); 875#ifdef ICL_KERNEL_PROXY 876 if (proxy_mode) 877 req.data.handoff.connection_id = conn->conn_socket; 878 else 879 req.data.handoff.socket = conn->conn_socket; 880#else 881 req.data.handoff.socket = conn->conn_socket; 882#endif 883 req.data.handoff.portal_group_tag = 884 conn->conn_portal->p_portal_group->pg_tag; 885 if (conn->conn_header_digest == CONN_DIGEST_CRC32C) 886 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 887 if (conn->conn_data_digest == CONN_DIGEST_CRC32C) 888 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 889 req.data.handoff.cmdsn = conn->conn_cmdsn; 890 req.data.handoff.statsn = conn->conn_statsn; 891 req.data.handoff.max_recv_data_segment_length = 892 conn->conn_max_data_segment_length; 893 req.data.handoff.max_burst_length = conn->conn_max_burst_length; 894 req.data.handoff.immediate_data = conn->conn_immediate_data; 895 896 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 897 log_err(1, "error issuing CTL_ISCSI ioctl; " 898 "dropping connection"); 899 } 900 901 if (req.status != CTL_ISCSI_OK) { 902 log_errx(1, "error returned from CTL iSCSI handoff request: " 903 "%s; dropping connection", req.error_str); 904 } 905} 906 907int 908kernel_port_add(struct port *port) 909{ 910 struct ctl_port_entry entry; 911 struct ctl_req req; 912 struct ctl_lun_map lm; 913 struct target *targ = port->p_target; 914 struct portal_group *pg = port->p_portal_group; 915 char tagstr[16]; 916 int error, i, n; 917 918 /* Create iSCSI port. */ 919 if (port->p_portal_group) { 920 bzero(&req, sizeof(req)); 921 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 922 req.reqtype = CTL_REQ_CREATE; 923 req.num_args = 5; 924 req.args = malloc(req.num_args * sizeof(*req.args)); 925 if (req.args == NULL) 926 log_err(1, "malloc"); 927 n = 0; 928 req.args[n].namelen = sizeof("port_id"); 929 req.args[n].name = __DECONST(char *, "port_id"); 930 req.args[n].vallen = sizeof(port->p_ctl_port); 931 req.args[n].value = &port->p_ctl_port; 932 req.args[n++].flags = CTL_BEARG_WR; 933 str_arg(&req.args[n++], "cfiscsi_target", targ->t_name); 934 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag); 935 str_arg(&req.args[n++], "cfiscsi_portal_group_tag", tagstr); 936 if (targ->t_alias) 937 str_arg(&req.args[n++], "cfiscsi_target_alias", targ->t_alias); 938 str_arg(&req.args[n++], "ctld_portal_group_name", pg->pg_name); 939 req.num_args = n; 940 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 941 free(req.args); 942 if (error != 0) { 943 log_warn("error issuing CTL_PORT_REQ ioctl"); 944 return (1); 945 } 946 if (req.status == CTL_LUN_ERROR) { 947 log_warnx("error returned from port creation request: %s", 948 req.error_str); 949 return (1); 950 } 951 if (req.status != CTL_LUN_OK) { 952 log_warnx("unknown port creation request status %d", 953 req.status); 954 return (1); 955 } 956 } else if (port->p_pport) { 957 port->p_ctl_port = port->p_pport->pp_ctl_port; 958 959 if (strncmp(targ->t_name, "naa.", 4) == 0 && 960 strlen(targ->t_name) == 20) { 961 bzero(&entry, sizeof(entry)); 962 entry.port_type = CTL_PORT_NONE; 963 entry.targ_port = port->p_ctl_port; 964 entry.flags |= CTL_PORT_WWNN_VALID; 965 entry.wwnn = strtoull(targ->t_name + 4, NULL, 16); 966 if (ioctl(ctl_fd, CTL_SET_PORT_WWNS, &entry) == -1) 967 log_warn("CTL_SET_PORT_WWNS ioctl failed"); 968 } 969 } 970 971 /* Explicitly enable mapping to block any access except allowed. */ 972 lm.port = port->p_ctl_port; 973 lm.plun = UINT32_MAX; 974 lm.lun = 0; 975 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 976 if (error != 0) 977 log_warn("CTL_LUN_MAP ioctl failed"); 978 979 /* Map configured LUNs */ 980 for (i = 0; i < MAX_LUNS; i++) { 981 if (targ->t_luns[i] == NULL) 982 continue; 983 lm.port = port->p_ctl_port; 984 lm.plun = i; 985 lm.lun = targ->t_luns[i]->l_ctl_lun; 986 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 987 if (error != 0) 988 log_warn("CTL_LUN_MAP ioctl failed"); 989 } 990 991 /* Enable port */ 992 bzero(&entry, sizeof(entry)); 993 entry.targ_port = port->p_ctl_port; 994 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 995 if (error != 0) { 996 log_warn("CTL_ENABLE_PORT ioctl failed"); 997 return (-1); 998 } 999 1000 return (0); 1001} 1002 1003int 1004kernel_port_update(struct port *port, struct port *oport) 1005{ 1006 struct ctl_lun_map lm; 1007 struct target *targ = port->p_target; 1008 struct target *otarg = oport->p_target; 1009 int error, i; 1010 uint32_t olun; 1011 1012 /* Map configured LUNs and unmap others */ 1013 for (i = 0; i < MAX_LUNS; i++) { 1014 lm.port = port->p_ctl_port; 1015 lm.plun = i; 1016 if (targ->t_luns[i] == NULL) 1017 lm.lun = UINT32_MAX; 1018 else 1019 lm.lun = targ->t_luns[i]->l_ctl_lun; 1020 if (otarg->t_luns[i] == NULL) 1021 olun = UINT32_MAX; 1022 else 1023 olun = otarg->t_luns[i]->l_ctl_lun; 1024 if (lm.lun == olun) 1025 continue; 1026 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1027 if (error != 0) 1028 log_warn("CTL_LUN_MAP ioctl failed"); 1029 } 1030 return (0); 1031} 1032 1033int 1034kernel_port_remove(struct port *port) 1035{ 1036 struct ctl_port_entry entry; 1037 struct ctl_lun_map lm; 1038 struct ctl_req req; 1039 char tagstr[16]; 1040 struct target *targ = port->p_target; 1041 struct portal_group *pg = port->p_portal_group; 1042 int error; 1043 1044 /* Disable port */ 1045 bzero(&entry, sizeof(entry)); 1046 entry.targ_port = port->p_ctl_port; 1047 error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry); 1048 if (error != 0) { 1049 log_warn("CTL_DISABLE_PORT ioctl failed"); 1050 return (-1); 1051 } 1052 1053 /* Remove iSCSI port. */ 1054 if (port->p_portal_group) { 1055 bzero(&req, sizeof(req)); 1056 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 1057 req.reqtype = CTL_REQ_REMOVE; 1058 req.num_args = 2; 1059 req.args = malloc(req.num_args * sizeof(*req.args)); 1060 if (req.args == NULL) 1061 log_err(1, "malloc"); 1062 str_arg(&req.args[0], "cfiscsi_target", targ->t_name); 1063 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag); 1064 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr); 1065 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 1066 free(req.args); 1067 if (error != 0) { 1068 log_warn("error issuing CTL_PORT_REQ ioctl"); 1069 return (1); 1070 } 1071 if (req.status == CTL_LUN_ERROR) { 1072 log_warnx("error returned from port removal request: %s", 1073 req.error_str); 1074 return (1); 1075 } 1076 if (req.status != CTL_LUN_OK) { 1077 log_warnx("unknown port removal request status %d", 1078 req.status); 1079 return (1); 1080 } 1081 } else { 1082 /* Disable LUN mapping. */ 1083 lm.port = port->p_ctl_port; 1084 lm.plun = UINT32_MAX; 1085 lm.lun = UINT32_MAX; 1086 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1087 if (error != 0) 1088 log_warn("CTL_LUN_MAP ioctl failed"); 1089 } 1090 return (0); 1091} 1092 1093#ifdef ICL_KERNEL_PROXY 1094void 1095kernel_listen(struct addrinfo *ai, bool iser, int portal_id) 1096{ 1097 struct ctl_iscsi req; 1098 1099 bzero(&req, sizeof(req)); 1100 1101 req.type = CTL_ISCSI_LISTEN; 1102 req.data.listen.iser = iser; 1103 req.data.listen.domain = ai->ai_family; 1104 req.data.listen.socktype = ai->ai_socktype; 1105 req.data.listen.protocol = ai->ai_protocol; 1106 req.data.listen.addr = ai->ai_addr; 1107 req.data.listen.addrlen = ai->ai_addrlen; 1108 req.data.listen.portal_id = portal_id; 1109 1110 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1111 log_err(1, "error issuing CTL_ISCSI ioctl"); 1112 1113 if (req.status != CTL_ISCSI_OK) { 1114 log_errx(1, "error returned from CTL iSCSI listen: %s", 1115 req.error_str); 1116 } 1117} 1118 1119void 1120kernel_accept(int *connection_id, int *portal_id, 1121 struct sockaddr *client_sa, socklen_t *client_salen) 1122{ 1123 struct ctl_iscsi req; 1124 struct sockaddr_storage ss; 1125 1126 bzero(&req, sizeof(req)); 1127 1128 req.type = CTL_ISCSI_ACCEPT; 1129 req.data.accept.initiator_addr = (struct sockaddr *)&ss; 1130 1131 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1132 log_err(1, "error issuing CTL_ISCSI ioctl"); 1133 1134 if (req.status != CTL_ISCSI_OK) { 1135 log_errx(1, "error returned from CTL iSCSI accept: %s", 1136 req.error_str); 1137 } 1138 1139 *connection_id = req.data.accept.connection_id; 1140 *portal_id = req.data.accept.portal_id; 1141 *client_salen = req.data.accept.initiator_addrlen; 1142 memcpy(client_sa, &ss, *client_salen); 1143} 1144 1145void 1146kernel_send(struct pdu *pdu) 1147{ 1148 struct ctl_iscsi req; 1149 1150 bzero(&req, sizeof(req)); 1151 1152 req.type = CTL_ISCSI_SEND; 1153 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 1154 req.data.send.bhs = pdu->pdu_bhs; 1155 req.data.send.data_segment_len = pdu->pdu_data_len; 1156 req.data.send.data_segment = pdu->pdu_data; 1157 1158 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1159 log_err(1, "error issuing CTL_ISCSI ioctl; " 1160 "dropping connection"); 1161 } 1162 1163 if (req.status != CTL_ISCSI_OK) { 1164 log_errx(1, "error returned from CTL iSCSI send: " 1165 "%s; dropping connection", req.error_str); 1166 } 1167} 1168 1169void 1170kernel_receive(struct pdu *pdu) 1171{ 1172 struct ctl_iscsi req; 1173 1174 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH); 1175 if (pdu->pdu_data == NULL) 1176 log_err(1, "malloc"); 1177 1178 bzero(&req, sizeof(req)); 1179 1180 req.type = CTL_ISCSI_RECEIVE; 1181 req.data.receive.connection_id = pdu->pdu_connection->conn_socket; 1182 req.data.receive.bhs = pdu->pdu_bhs; 1183 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH; 1184 req.data.receive.data_segment = pdu->pdu_data; 1185 1186 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1187 log_err(1, "error issuing CTL_ISCSI ioctl; " 1188 "dropping connection"); 1189 } 1190 1191 if (req.status != CTL_ISCSI_OK) { 1192 log_errx(1, "error returned from CTL iSCSI receive: " 1193 "%s; dropping connection", req.error_str); 1194 } 1195 1196} 1197 1198#endif /* ICL_KERNEL_PROXY */ 1199 1200/* 1201 * XXX: I CANT INTO LATIN 1202 */ 1203void 1204kernel_capsicate(void) 1205{ 1206 int error; 1207 cap_rights_t rights; 1208 const unsigned long cmds[] = { CTL_ISCSI }; 1209 1210 cap_rights_init(&rights, CAP_IOCTL); 1211 error = cap_rights_limit(ctl_fd, &rights); 1212 if (error != 0 && errno != ENOSYS) 1213 log_err(1, "cap_rights_limit"); 1214 1215 error = cap_ioctls_limit(ctl_fd, cmds, 1216 sizeof(cmds) / sizeof(cmds[0])); 1217 if (error != 0 && errno != ENOSYS) 1218 log_err(1, "cap_ioctls_limit"); 1219 1220 error = cap_enter(); 1221 if (error != 0 && errno != ENOSYS) 1222 log_err(1, "cap_enter"); 1223 1224 if (cap_sandboxed()) 1225 log_debugx("Capsicum capability mode enabled"); 1226 else 1227 log_warnx("Capsicum capability mode not supported"); 1228} 1229 1230