kernel.c revision 290824
1/*- 2 * Copyright (c) 2003, 2004 Silicon Graphics International Corp. 3 * Copyright (c) 1997-2007 Kenneth D. Merry 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * Portions of this software were developed by Edward Tomasz Napierala 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification. 16 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 17 * substantially similar to the "NO WARRANTY" disclaimer below 18 * ("Disclaimer") and any redistribution must be conditioned upon 19 * including a substantially similar Disclaimer requirement for further 20 * binary redistribution. 21 * 22 * NO WARRANTY 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGES. 34 * 35 */ 36 37#include <sys/cdefs.h> 38__FBSDID("$FreeBSD: head/usr.sbin/ctld/kernel.c 290824 2015-11-14 16:18:22Z trasz $"); 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 option *o; 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 free(name); 519 if (port->pp == 0 && port->vp == 0) { 520 name = checked_strdup(port->port_name); 521 } else if (port->vp == 0) { 522 retval = asprintf(&name, "%s/%d", 523 port->port_name, port->pp); 524 if (retval <= 0) 525 log_err(1, "asprintf"); 526 } else { 527 retval = asprintf(&name, "%s/%d/%d", 528 port->port_name, port->pp, port->vp); 529 if (retval <= 0) 530 log_err(1, "asprintf"); 531 } 532 533 if (port->cfiscsi_target == NULL) { 534 log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ", 535 port->port_id, name); 536 pp = pport_find(conf, name); 537 if (pp == NULL) { 538#if 0 539 log_debugx("found new kernel port %u \"%s\"", 540 port->port_id, name); 541#endif 542 pp = pport_new(conf, name, port->port_id); 543 if (pp == NULL) { 544 log_warnx("pport_new failed"); 545 continue; 546 } 547 } 548 continue; 549 } 550 if (port->cfiscsi_state != 1) { 551 log_debugx("CTL port %ju is not active (%d); ignoring", 552 (uintmax_t)port->port_id, port->cfiscsi_state); 553 continue; 554 } 555 556 targ = target_find(conf, port->cfiscsi_target); 557 if (targ == NULL) { 558#if 0 559 log_debugx("found new kernel target %s for CTL port %ld", 560 port->cfiscsi_target, port->port_id); 561#endif 562 targ = target_new(conf, port->cfiscsi_target); 563 if (targ == NULL) { 564 log_warnx("target_new failed"); 565 continue; 566 } 567 } 568 569 if (port->ctld_portal_group_name == NULL) 570 continue; 571 pg = portal_group_find(conf, port->ctld_portal_group_name); 572 if (pg == NULL) { 573#if 0 574 log_debugx("found new kernel portal group %s for CTL port %ld", 575 port->ctld_portal_group_name, port->port_id); 576#endif 577 pg = portal_group_new(conf, port->ctld_portal_group_name); 578 if (pg == NULL) { 579 log_warnx("portal_group_new failed"); 580 continue; 581 } 582 } 583 pg->pg_tag = port->cfiscsi_portal_group_tag; 584 cp = port_new(conf, targ, pg); 585 if (cp == NULL) { 586 log_warnx("port_new failed"); 587 continue; 588 } 589 cp->p_ctl_port = port->port_id; 590 } 591 free(name); 592 593 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 594 struct cctl_lun_nv *nv; 595 596 if (lun->ctld_name == NULL) { 597 log_debugx("CTL lun %ju wasn't managed by ctld; " 598 "ignoring", (uintmax_t)lun->lun_id); 599 continue; 600 } 601 602 cl = lun_find(conf, lun->ctld_name); 603 if (cl != NULL) { 604 log_warnx("found CTL lun %ju \"%s\", " 605 "also backed by CTL lun %d; ignoring", 606 (uintmax_t)lun->lun_id, lun->ctld_name, 607 cl->l_ctl_lun); 608 continue; 609 } 610 611 log_debugx("found CTL lun %ju \"%s\"", 612 (uintmax_t)lun->lun_id, lun->ctld_name); 613 614 cl = lun_new(conf, lun->ctld_name); 615 if (cl == NULL) { 616 log_warnx("lun_new failed"); 617 continue; 618 } 619 lun_set_backend(cl, lun->backend_type); 620 lun_set_device_type(cl, lun->device_type); 621 lun_set_blocksize(cl, lun->blocksize); 622 lun_set_device_id(cl, lun->device_id); 623 lun_set_serial(cl, lun->serial_number); 624 lun_set_size(cl, lun->size_blocks * cl->l_blocksize); 625 lun_set_ctl_lun(cl, lun->lun_id); 626 627 STAILQ_FOREACH(nv, &lun->attr_list, links) { 628 if (strcmp(nv->name, "file") == 0 || 629 strcmp(nv->name, "dev") == 0) { 630 lun_set_path(cl, nv->value); 631 continue; 632 } 633 o = option_new(&cl->l_options, nv->name, nv->value); 634 if (o == NULL) 635 log_warnx("unable to add CTL lun option %s " 636 "for CTL lun %ju \"%s\"", 637 nv->name, (uintmax_t) lun->lun_id, 638 cl->l_name); 639 } 640 } 641 642 return (conf); 643} 644 645static void 646str_arg(struct ctl_be_arg *arg, const char *name, const char *value) 647{ 648 649 arg->namelen = strlen(name) + 1; 650 arg->name = __DECONST(char *, name); 651 arg->vallen = strlen(value) + 1; 652 arg->value = __DECONST(char *, value); 653 arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD; 654} 655 656int 657kernel_lun_add(struct lun *lun) 658{ 659 struct option *o; 660 struct ctl_lun_req req; 661 int error, i, num_options; 662 663 bzero(&req, sizeof(req)); 664 665 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 666 req.reqtype = CTL_LUNREQ_CREATE; 667 668 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 669 670 if (lun->l_size != 0) 671 req.reqdata.create.lun_size_bytes = lun->l_size; 672 673 if (lun->l_ctl_lun >= 0) { 674 req.reqdata.create.req_lun_id = lun->l_ctl_lun; 675 req.reqdata.create.flags |= CTL_LUN_FLAG_ID_REQ; 676 } 677 678 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 679 req.reqdata.create.device_type = lun->l_device_type; 680 681 if (lun->l_serial != NULL) { 682 strncpy(req.reqdata.create.serial_num, lun->l_serial, 683 sizeof(req.reqdata.create.serial_num)); 684 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 685 } 686 687 if (lun->l_device_id != NULL) { 688 strncpy(req.reqdata.create.device_id, lun->l_device_id, 689 sizeof(req.reqdata.create.device_id)); 690 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 691 } 692 693 if (lun->l_path != NULL) { 694 o = option_find(&lun->l_options, "file"); 695 if (o != NULL) { 696 option_set(o, lun->l_path); 697 } else { 698 o = option_new(&lun->l_options, "file", lun->l_path); 699 assert(o != NULL); 700 } 701 } 702 703 o = option_find(&lun->l_options, "ctld_name"); 704 if (o != NULL) { 705 option_set(o, lun->l_name); 706 } else { 707 o = option_new(&lun->l_options, "ctld_name", lun->l_name); 708 assert(o != NULL); 709 } 710 711 o = option_find(&lun->l_options, "scsiname"); 712 if (o == NULL && lun->l_scsiname != NULL) { 713 o = option_new(&lun->l_options, "scsiname", lun->l_scsiname); 714 assert(o != NULL); 715 } 716 717 num_options = 0; 718 TAILQ_FOREACH(o, &lun->l_options, o_next) 719 num_options++; 720 721 req.num_be_args = num_options; 722 if (num_options > 0) { 723 req.be_args = malloc(num_options * sizeof(*req.be_args)); 724 if (req.be_args == NULL) { 725 log_warn("error allocating %zd bytes", 726 num_options * sizeof(*req.be_args)); 727 return (1); 728 } 729 730 i = 0; 731 TAILQ_FOREACH(o, &lun->l_options, o_next) { 732 str_arg(&req.be_args[i], o->o_name, o->o_value); 733 i++; 734 } 735 assert(i == num_options); 736 } 737 738 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 739 free(req.be_args); 740 if (error != 0) { 741 log_warn("error issuing CTL_LUN_REQ ioctl"); 742 return (1); 743 } 744 745 switch (req.status) { 746 case CTL_LUN_ERROR: 747 log_warnx("LUN creation error: %s", req.error_str); 748 return (1); 749 case CTL_LUN_WARNING: 750 log_warnx("LUN creation warning: %s", req.error_str); 751 break; 752 case CTL_LUN_OK: 753 break; 754 default: 755 log_warnx("unknown LUN creation status: %d", 756 req.status); 757 return (1); 758 } 759 760 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id); 761 return (0); 762} 763 764int 765kernel_lun_modify(struct lun *lun) 766{ 767 struct option *o; 768 struct ctl_lun_req req; 769 int error, i, num_options; 770 771 bzero(&req, sizeof(req)); 772 773 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 774 req.reqtype = CTL_LUNREQ_MODIFY; 775 776 req.reqdata.modify.lun_id = lun->l_ctl_lun; 777 req.reqdata.modify.lun_size_bytes = lun->l_size; 778 779 num_options = 0; 780 TAILQ_FOREACH(o, &lun->l_options, o_next) 781 num_options++; 782 783 req.num_be_args = num_options; 784 if (num_options > 0) { 785 req.be_args = malloc(num_options * sizeof(*req.be_args)); 786 if (req.be_args == NULL) { 787 log_warn("error allocating %zd bytes", 788 num_options * sizeof(*req.be_args)); 789 return (1); 790 } 791 792 i = 0; 793 TAILQ_FOREACH(o, &lun->l_options, o_next) { 794 str_arg(&req.be_args[i], o->o_name, o->o_value); 795 i++; 796 } 797 assert(i == num_options); 798 } 799 800 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 801 free(req.be_args); 802 if (error != 0) { 803 log_warn("error issuing CTL_LUN_REQ ioctl"); 804 return (1); 805 } 806 807 switch (req.status) { 808 case CTL_LUN_ERROR: 809 log_warnx("LUN modification error: %s", req.error_str); 810 return (1); 811 case CTL_LUN_WARNING: 812 log_warnx("LUN modification warning: %s", req.error_str); 813 break; 814 case CTL_LUN_OK: 815 break; 816 default: 817 log_warnx("unknown LUN modification status: %d", 818 req.status); 819 return (1); 820 } 821 822 return (0); 823} 824 825int 826kernel_lun_remove(struct lun *lun) 827{ 828 struct ctl_lun_req req; 829 830 bzero(&req, sizeof(req)); 831 832 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 833 req.reqtype = CTL_LUNREQ_RM; 834 835 req.reqdata.rm.lun_id = lun->l_ctl_lun; 836 837 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 838 log_warn("error issuing CTL_LUN_REQ ioctl"); 839 return (1); 840 } 841 842 switch (req.status) { 843 case CTL_LUN_ERROR: 844 log_warnx("LUN removal error: %s", req.error_str); 845 return (1); 846 case CTL_LUN_WARNING: 847 log_warnx("LUN removal warning: %s", req.error_str); 848 break; 849 case CTL_LUN_OK: 850 break; 851 default: 852 log_warnx("unknown LUN removal status: %d", req.status); 853 return (1); 854 } 855 856 return (0); 857} 858 859void 860kernel_handoff(struct connection *conn) 861{ 862 struct ctl_iscsi req; 863 864 bzero(&req, sizeof(req)); 865 866 req.type = CTL_ISCSI_HANDOFF; 867 strlcpy(req.data.handoff.initiator_name, 868 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 869 strlcpy(req.data.handoff.initiator_addr, 870 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 871 if (conn->conn_initiator_alias != NULL) { 872 strlcpy(req.data.handoff.initiator_alias, 873 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 874 } 875 memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid, 876 sizeof(req.data.handoff.initiator_isid)); 877 strlcpy(req.data.handoff.target_name, 878 conn->conn_target->t_name, sizeof(req.data.handoff.target_name)); 879 if (conn->conn_portal->p_portal_group->pg_offload != NULL) { 880 strlcpy(req.data.handoff.offload, 881 conn->conn_portal->p_portal_group->pg_offload, 882 sizeof(req.data.handoff.offload)); 883 } 884#ifdef ICL_KERNEL_PROXY 885 if (proxy_mode) 886 req.data.handoff.connection_id = conn->conn_socket; 887 else 888 req.data.handoff.socket = conn->conn_socket; 889#else 890 req.data.handoff.socket = conn->conn_socket; 891#endif 892 req.data.handoff.portal_group_tag = 893 conn->conn_portal->p_portal_group->pg_tag; 894 if (conn->conn_header_digest == CONN_DIGEST_CRC32C) 895 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 896 if (conn->conn_data_digest == CONN_DIGEST_CRC32C) 897 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 898 req.data.handoff.cmdsn = conn->conn_cmdsn; 899 req.data.handoff.statsn = conn->conn_statsn; 900 req.data.handoff.max_recv_data_segment_length = 901 conn->conn_max_data_segment_length; 902 req.data.handoff.max_burst_length = conn->conn_max_burst_length; 903 req.data.handoff.immediate_data = conn->conn_immediate_data; 904 905 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 906 log_err(1, "error issuing CTL_ISCSI ioctl; " 907 "dropping connection"); 908 } 909 910 if (req.status != CTL_ISCSI_OK) { 911 log_errx(1, "error returned from CTL iSCSI handoff request: " 912 "%s; dropping connection", req.error_str); 913 } 914} 915 916void 917kernel_limits(const char *offload, size_t *max_data_segment_length) 918{ 919 struct ctl_iscsi req; 920 921 bzero(&req, sizeof(req)); 922 923 req.type = CTL_ISCSI_LIMITS; 924 if (offload != NULL) { 925 strlcpy(req.data.limits.offload, offload, 926 sizeof(req.data.limits.offload)); 927 } 928 929 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 930 log_err(1, "error issuing CTL_ISCSI ioctl; " 931 "dropping connection"); 932 } 933 934 if (req.status != CTL_ISCSI_OK) { 935 log_errx(1, "error returned from CTL iSCSI limits request: " 936 "%s; dropping connection", req.error_str); 937 } 938 939 *max_data_segment_length = req.data.limits.data_segment_limit; 940 if (offload != NULL) { 941 log_debugx("MaxRecvDataSegment kernel limit for offload " 942 "\"%s\" is %zd", offload, *max_data_segment_length); 943 } else { 944 log_debugx("MaxRecvDataSegment kernel limit is %zd", 945 *max_data_segment_length); 946 } 947} 948 949int 950kernel_port_add(struct port *port) 951{ 952 struct option *o; 953 struct ctl_port_entry entry; 954 struct ctl_req req; 955 struct ctl_lun_map lm; 956 struct target *targ = port->p_target; 957 struct portal_group *pg = port->p_portal_group; 958 char tagstr[16]; 959 int error, i, n; 960 961 /* Create iSCSI port. */ 962 if (port->p_portal_group) { 963 bzero(&req, sizeof(req)); 964 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 965 req.reqtype = CTL_REQ_CREATE; 966 req.num_args = 5; 967 TAILQ_FOREACH(o, &pg->pg_options, o_next) 968 req.num_args++; 969 req.args = malloc(req.num_args * sizeof(*req.args)); 970 if (req.args == NULL) 971 log_err(1, "malloc"); 972 n = 0; 973 req.args[n].namelen = sizeof("port_id"); 974 req.args[n].name = __DECONST(char *, "port_id"); 975 req.args[n].vallen = sizeof(port->p_ctl_port); 976 req.args[n].value = &port->p_ctl_port; 977 req.args[n++].flags = CTL_BEARG_WR; 978 str_arg(&req.args[n++], "cfiscsi_target", targ->t_name); 979 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag); 980 str_arg(&req.args[n++], "cfiscsi_portal_group_tag", tagstr); 981 if (targ->t_alias) 982 str_arg(&req.args[n++], "cfiscsi_target_alias", targ->t_alias); 983 str_arg(&req.args[n++], "ctld_portal_group_name", pg->pg_name); 984 TAILQ_FOREACH(o, &pg->pg_options, o_next) 985 str_arg(&req.args[n++], o->o_name, o->o_value); 986 req.num_args = n; 987 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 988 free(req.args); 989 if (error != 0) { 990 log_warn("error issuing CTL_PORT_REQ ioctl"); 991 return (1); 992 } 993 if (req.status == CTL_LUN_ERROR) { 994 log_warnx("error returned from port creation request: %s", 995 req.error_str); 996 return (1); 997 } 998 if (req.status != CTL_LUN_OK) { 999 log_warnx("unknown port creation request status %d", 1000 req.status); 1001 return (1); 1002 } 1003 } else if (port->p_pport) { 1004 port->p_ctl_port = port->p_pport->pp_ctl_port; 1005 1006 if (strncmp(targ->t_name, "naa.", 4) == 0 && 1007 strlen(targ->t_name) == 20) { 1008 bzero(&entry, sizeof(entry)); 1009 entry.port_type = CTL_PORT_NONE; 1010 entry.targ_port = port->p_ctl_port; 1011 entry.flags |= CTL_PORT_WWNN_VALID; 1012 entry.wwnn = strtoull(targ->t_name + 4, NULL, 16); 1013 if (ioctl(ctl_fd, CTL_SET_PORT_WWNS, &entry) == -1) 1014 log_warn("CTL_SET_PORT_WWNS ioctl failed"); 1015 } 1016 } 1017 1018 /* Explicitly enable mapping to block any access except allowed. */ 1019 lm.port = port->p_ctl_port; 1020 lm.plun = UINT32_MAX; 1021 lm.lun = 0; 1022 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1023 if (error != 0) 1024 log_warn("CTL_LUN_MAP ioctl failed"); 1025 1026 /* Map configured LUNs */ 1027 for (i = 0; i < MAX_LUNS; i++) { 1028 if (targ->t_luns[i] == NULL) 1029 continue; 1030 lm.port = port->p_ctl_port; 1031 lm.plun = i; 1032 lm.lun = targ->t_luns[i]->l_ctl_lun; 1033 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1034 if (error != 0) 1035 log_warn("CTL_LUN_MAP ioctl failed"); 1036 } 1037 1038 /* Enable port */ 1039 bzero(&entry, sizeof(entry)); 1040 entry.targ_port = port->p_ctl_port; 1041 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 1042 if (error != 0) { 1043 log_warn("CTL_ENABLE_PORT ioctl failed"); 1044 return (-1); 1045 } 1046 1047 return (0); 1048} 1049 1050int 1051kernel_port_update(struct port *port, struct port *oport) 1052{ 1053 struct ctl_lun_map lm; 1054 struct target *targ = port->p_target; 1055 struct target *otarg = oport->p_target; 1056 int error, i; 1057 uint32_t olun; 1058 1059 /* Map configured LUNs and unmap others */ 1060 for (i = 0; i < MAX_LUNS; i++) { 1061 lm.port = port->p_ctl_port; 1062 lm.plun = i; 1063 if (targ->t_luns[i] == NULL) 1064 lm.lun = UINT32_MAX; 1065 else 1066 lm.lun = targ->t_luns[i]->l_ctl_lun; 1067 if (otarg->t_luns[i] == NULL) 1068 olun = UINT32_MAX; 1069 else 1070 olun = otarg->t_luns[i]->l_ctl_lun; 1071 if (lm.lun == olun) 1072 continue; 1073 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1074 if (error != 0) 1075 log_warn("CTL_LUN_MAP ioctl failed"); 1076 } 1077 return (0); 1078} 1079 1080int 1081kernel_port_remove(struct port *port) 1082{ 1083 struct ctl_port_entry entry; 1084 struct ctl_lun_map lm; 1085 struct ctl_req req; 1086 char tagstr[16]; 1087 struct target *targ = port->p_target; 1088 struct portal_group *pg = port->p_portal_group; 1089 int error; 1090 1091 /* Disable port */ 1092 bzero(&entry, sizeof(entry)); 1093 entry.targ_port = port->p_ctl_port; 1094 error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry); 1095 if (error != 0) { 1096 log_warn("CTL_DISABLE_PORT ioctl failed"); 1097 return (-1); 1098 } 1099 1100 /* Remove iSCSI port. */ 1101 if (port->p_portal_group) { 1102 bzero(&req, sizeof(req)); 1103 strlcpy(req.driver, "iscsi", sizeof(req.driver)); 1104 req.reqtype = CTL_REQ_REMOVE; 1105 req.num_args = 2; 1106 req.args = malloc(req.num_args * sizeof(*req.args)); 1107 if (req.args == NULL) 1108 log_err(1, "malloc"); 1109 str_arg(&req.args[0], "cfiscsi_target", targ->t_name); 1110 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag); 1111 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr); 1112 error = ioctl(ctl_fd, CTL_PORT_REQ, &req); 1113 free(req.args); 1114 if (error != 0) { 1115 log_warn("error issuing CTL_PORT_REQ ioctl"); 1116 return (1); 1117 } 1118 if (req.status == CTL_LUN_ERROR) { 1119 log_warnx("error returned from port removal request: %s", 1120 req.error_str); 1121 return (1); 1122 } 1123 if (req.status != CTL_LUN_OK) { 1124 log_warnx("unknown port removal request status %d", 1125 req.status); 1126 return (1); 1127 } 1128 } else { 1129 /* Disable LUN mapping. */ 1130 lm.port = port->p_ctl_port; 1131 lm.plun = UINT32_MAX; 1132 lm.lun = UINT32_MAX; 1133 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm); 1134 if (error != 0) 1135 log_warn("CTL_LUN_MAP ioctl failed"); 1136 } 1137 return (0); 1138} 1139 1140#ifdef ICL_KERNEL_PROXY 1141void 1142kernel_listen(struct addrinfo *ai, bool iser, int portal_id) 1143{ 1144 struct ctl_iscsi req; 1145 1146 bzero(&req, sizeof(req)); 1147 1148 req.type = CTL_ISCSI_LISTEN; 1149 req.data.listen.iser = iser; 1150 req.data.listen.domain = ai->ai_family; 1151 req.data.listen.socktype = ai->ai_socktype; 1152 req.data.listen.protocol = ai->ai_protocol; 1153 req.data.listen.addr = ai->ai_addr; 1154 req.data.listen.addrlen = ai->ai_addrlen; 1155 req.data.listen.portal_id = portal_id; 1156 1157 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1158 log_err(1, "error issuing CTL_ISCSI ioctl"); 1159 1160 if (req.status != CTL_ISCSI_OK) { 1161 log_errx(1, "error returned from CTL iSCSI listen: %s", 1162 req.error_str); 1163 } 1164} 1165 1166void 1167kernel_accept(int *connection_id, int *portal_id, 1168 struct sockaddr *client_sa, socklen_t *client_salen) 1169{ 1170 struct ctl_iscsi req; 1171 struct sockaddr_storage ss; 1172 1173 bzero(&req, sizeof(req)); 1174 1175 req.type = CTL_ISCSI_ACCEPT; 1176 req.data.accept.initiator_addr = (struct sockaddr *)&ss; 1177 1178 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 1179 log_err(1, "error issuing CTL_ISCSI ioctl"); 1180 1181 if (req.status != CTL_ISCSI_OK) { 1182 log_errx(1, "error returned from CTL iSCSI accept: %s", 1183 req.error_str); 1184 } 1185 1186 *connection_id = req.data.accept.connection_id; 1187 *portal_id = req.data.accept.portal_id; 1188 *client_salen = req.data.accept.initiator_addrlen; 1189 memcpy(client_sa, &ss, *client_salen); 1190} 1191 1192void 1193kernel_send(struct pdu *pdu) 1194{ 1195 struct ctl_iscsi req; 1196 1197 bzero(&req, sizeof(req)); 1198 1199 req.type = CTL_ISCSI_SEND; 1200 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 1201 req.data.send.bhs = pdu->pdu_bhs; 1202 req.data.send.data_segment_len = pdu->pdu_data_len; 1203 req.data.send.data_segment = pdu->pdu_data; 1204 1205 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1206 log_err(1, "error issuing CTL_ISCSI ioctl; " 1207 "dropping connection"); 1208 } 1209 1210 if (req.status != CTL_ISCSI_OK) { 1211 log_errx(1, "error returned from CTL iSCSI send: " 1212 "%s; dropping connection", req.error_str); 1213 } 1214} 1215 1216void 1217kernel_receive(struct pdu *pdu) 1218{ 1219 struct ctl_iscsi req; 1220 1221 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH); 1222 if (pdu->pdu_data == NULL) 1223 log_err(1, "malloc"); 1224 1225 bzero(&req, sizeof(req)); 1226 1227 req.type = CTL_ISCSI_RECEIVE; 1228 req.data.receive.connection_id = pdu->pdu_connection->conn_socket; 1229 req.data.receive.bhs = pdu->pdu_bhs; 1230 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH; 1231 req.data.receive.data_segment = pdu->pdu_data; 1232 1233 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 1234 log_err(1, "error issuing CTL_ISCSI ioctl; " 1235 "dropping connection"); 1236 } 1237 1238 if (req.status != CTL_ISCSI_OK) { 1239 log_errx(1, "error returned from CTL iSCSI receive: " 1240 "%s; dropping connection", req.error_str); 1241 } 1242 1243} 1244 1245#endif /* ICL_KERNEL_PROXY */ 1246 1247/* 1248 * XXX: I CANT INTO LATIN 1249 */ 1250void 1251kernel_capsicate(void) 1252{ 1253 int error; 1254 cap_rights_t rights; 1255 const unsigned long cmds[] = { CTL_ISCSI }; 1256 1257 cap_rights_init(&rights, CAP_IOCTL); 1258 error = cap_rights_limit(ctl_fd, &rights); 1259 if (error != 0 && errno != ENOSYS) 1260 log_err(1, "cap_rights_limit"); 1261 1262 error = cap_ioctls_limit(ctl_fd, cmds, 1263 sizeof(cmds) / sizeof(cmds[0])); 1264 if (error != 0 && errno != ENOSYS) 1265 log_err(1, "cap_ioctls_limit"); 1266 1267 error = cap_enter(); 1268 if (error != 0 && errno != ENOSYS) 1269 log_err(1, "cap_enter"); 1270 1271 if (cap_sandboxed()) 1272 log_debugx("Capsicum capability mode enabled"); 1273 else 1274 log_warnx("Capsicum capability mode not supported"); 1275} 1276 1277