1 /*- 2 * Copyright (c) 2003, 2004 Silicon Graphics International Corp. 3 * Copyright (c) 1997-2007 Kenneth D. Merry 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * Portions of this software were developed by Edward Tomasz Napierala 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification. 16 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 17 * substantially similar to the "NO WARRANTY" disclaimer below 18 * ("Disclaimer") and any redistribution must be conditioned upon 19 * including a substantially similar Disclaimer requirement for further 20 * binary redistribution. 21 * 22 * NO WARRANTY 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGES. 34 * 35 * $FreeBSD$ 36 */ 37 38 #include <sys/ioctl.h> 39 #include <sys/types.h> 40 #include <sys/stat.h> 41 #include <sys/param.h> 42 #include <sys/linker.h> 43 #include <sys/queue.h> 44 #include <sys/callout.h> 45 #include <sys/sbuf.h> 46 #include <sys/capability.h> 47 #include <assert.h> 48 #include <bsdxml.h> 49 #include <ctype.h> 50 #include <errno.h> 51 #include <fcntl.h> 52 #include <stdint.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <strings.h> 57 #include <cam/scsi/scsi_all.h> 58 #include <cam/scsi/scsi_message.h> 59 #include <cam/ctl/ctl.h> 60 #include <cam/ctl/ctl_io.h> 61 #include <cam/ctl/ctl_frontend_internal.h> 62 #include <cam/ctl/ctl_backend.h> 63 #include <cam/ctl/ctl_ioctl.h> 64 #include <cam/ctl/ctl_backend_block.h> 65 #include <cam/ctl/ctl_util.h> 66 #include <cam/ctl/ctl_scsi_all.h> 67 68 #ifdef ICL_KERNEL_PROXY 69 #include <netdb.h> 70 #endif 71 72 #include "ctld.h" 73 74 static int ctl_fd = 0; 75 76 void 77 kernel_init(void) 78 { 79 int retval, saved_errno; 80 81 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 82 if (ctl_fd < 0 && errno == ENOENT) { 83 saved_errno = errno; 84 retval = kldload("ctl"); 85 if (retval != -1) 86 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 87 else 88 errno = saved_errno; 89 } 90 if (ctl_fd < 0) 91 log_err(1, "failed to open %s", CTL_DEFAULT_DEV); 92 } 93 94 /* 95 * Name/value pair used for per-LUN attributes. 96 */ 97 struct cctl_lun_nv { 98 char *name; 99 char *value; 100 STAILQ_ENTRY(cctl_lun_nv) links; 101 }; 102 103 /* 104 * Backend LUN information. 105 */ 106 struct cctl_lun { 107 uint64_t lun_id; 108 char *backend_type; 109 uint64_t size_blocks; 110 uint32_t blocksize; 111 char *serial_number; 112 char *device_id; 113 char *cfiscsi_target; 114 char *cfiscsi_target_alias; 115 int cfiscsi_lun; 116 STAILQ_HEAD(,cctl_lun_nv) attr_list; 117 STAILQ_ENTRY(cctl_lun) links; 118 }; 119 120 struct cctl_devlist_data { 121 int num_luns; 122 STAILQ_HEAD(,cctl_lun) lun_list; 123 struct cctl_lun *cur_lun; 124 int level; 125 struct sbuf *cur_sb[32]; 126 }; 127 128 static void 129 cctl_start_element(void *user_data, const char *name, const char **attr) 130 { 131 int i; 132 struct cctl_devlist_data *devlist; 133 struct cctl_lun *cur_lun; 134 135 devlist = (struct cctl_devlist_data *)user_data; 136 cur_lun = devlist->cur_lun; 137 devlist->level++; 138 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 139 sizeof(devlist->cur_sb[0]))) 140 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 141 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 142 143 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 144 if (devlist->cur_sb[devlist->level] == NULL) 145 log_err(1, "%s: unable to allocate sbuf", __func__); 146 147 if (strcmp(name, "lun") == 0) { 148 if (cur_lun != NULL) 149 log_errx(1, "%s: improper lun element nesting", 150 __func__); 151 152 cur_lun = calloc(1, sizeof(*cur_lun)); 153 if (cur_lun == NULL) 154 log_err(1, "%s: cannot allocate %zd bytes", __func__, 155 sizeof(*cur_lun)); 156 157 devlist->num_luns++; 158 devlist->cur_lun = cur_lun; 159 160 STAILQ_INIT(&cur_lun->attr_list); 161 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links); 162 163 for (i = 0; attr[i] != NULL; i += 2) { 164 if (strcmp(attr[i], "id") == 0) { 165 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0); 166 } else { 167 log_errx(1, "%s: invalid LUN attribute %s = %s", 168 __func__, attr[i], attr[i+1]); 169 } 170 } 171 } 172 } 173 174 static void 175 cctl_end_element(void *user_data, const char *name) 176 { 177 struct cctl_devlist_data *devlist; 178 struct cctl_lun *cur_lun; 179 char *str; 180 181 devlist = (struct cctl_devlist_data *)user_data; 182 cur_lun = devlist->cur_lun; 183 184 if ((cur_lun == NULL) 185 && (strcmp(name, "ctllunlist") != 0)) 186 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name); 187 188 if (devlist->cur_sb[devlist->level] == NULL) 189 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 190 devlist->level, name); 191 192 sbuf_finish(devlist->cur_sb[devlist->level]); 193 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 194 195 if (strlen(str) == 0) { 196 free(str); 197 str = NULL; 198 } 199 200 sbuf_delete(devlist->cur_sb[devlist->level]); 201 devlist->cur_sb[devlist->level] = NULL; 202 devlist->level--; 203 204 if (strcmp(name, "backend_type") == 0) { 205 cur_lun->backend_type = str; 206 str = NULL; 207 } else if (strcmp(name, "size") == 0) { 208 cur_lun->size_blocks = strtoull(str, NULL, 0); 209 } else if (strcmp(name, "blocksize") == 0) { 210 cur_lun->blocksize = strtoul(str, NULL, 0); 211 } else if (strcmp(name, "serial_number") == 0) { 212 cur_lun->serial_number = str; 213 str = NULL; 214 } else if (strcmp(name, "device_id") == 0) { 215 cur_lun->device_id = str; 216 str = NULL; 217 } else if (strcmp(name, "cfiscsi_target") == 0) { 218 cur_lun->cfiscsi_target = str; 219 str = NULL; 220 } else if (strcmp(name, "cfiscsi_target_alias") == 0) { 221 cur_lun->cfiscsi_target_alias = str; 222 str = NULL; 223 } else if (strcmp(name, "cfiscsi_lun") == 0) { 224 cur_lun->cfiscsi_lun = strtoul(str, NULL, 0); 225 } else if (strcmp(name, "lun") == 0) { 226 devlist->cur_lun = NULL; 227 } else if (strcmp(name, "ctllunlist") == 0) { 228 229 } else { 230 struct cctl_lun_nv *nv; 231 232 nv = calloc(1, sizeof(*nv)); 233 if (nv == NULL) 234 log_err(1, "%s: can't allocate %zd bytes for nv pair", 235 __func__, sizeof(*nv)); 236 237 nv->name = checked_strdup(name); 238 239 nv->value = str; 240 str = NULL; 241 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links); 242 } 243 244 free(str); 245 } 246 247 static void 248 cctl_char_handler(void *user_data, const XML_Char *str, int len) 249 { 250 struct cctl_devlist_data *devlist; 251 252 devlist = (struct cctl_devlist_data *)user_data; 253 254 sbuf_bcat(devlist->cur_sb[devlist->level], str, len); 255 } 256 257 struct conf * 258 conf_new_from_kernel(void) 259 { 260 struct conf *conf = NULL; 261 struct target *targ; 262 struct lun *cl; 263 struct lun_option *lo; 264 struct ctl_lun_list list; 265 struct cctl_devlist_data devlist; 266 struct cctl_lun *lun; 267 XML_Parser parser; 268 char *lun_str = NULL; 269 int lun_len; 270 int retval; 271 272 lun_len = 4096; 273 274 bzero(&devlist, sizeof(devlist)); 275 STAILQ_INIT(&devlist.lun_list); 276 277 log_debugx("obtaining previously configured CTL luns from the kernel"); 278 279 retry: 280 lun_str = realloc(lun_str, lun_len); 281 if (lun_str == NULL) 282 log_err(1, "realloc"); 283 284 bzero(&list, sizeof(list)); 285 list.alloc_len = lun_len; 286 list.status = CTL_LUN_LIST_NONE; 287 list.lun_xml = lun_str; 288 289 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) { 290 log_warn("error issuing CTL_LUN_LIST ioctl"); 291 free(lun_str); 292 return (NULL); 293 } 294 295 if (list.status == CTL_LUN_LIST_ERROR) { 296 log_warnx("error returned from CTL_LUN_LIST ioctl: %s", 297 list.error_str); 298 free(lun_str); 299 return (NULL); 300 } 301 302 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 303 lun_len = lun_len << 1; 304 goto retry; 305 } 306 307 parser = XML_ParserCreate(NULL); 308 if (parser == NULL) { 309 log_warnx("unable to create XML parser"); 310 free(lun_str); 311 return (NULL); 312 } 313 314 XML_SetUserData(parser, &devlist); 315 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element); 316 XML_SetCharacterDataHandler(parser, cctl_char_handler); 317 318 retval = XML_Parse(parser, lun_str, strlen(lun_str), 1); 319 XML_ParserFree(parser); 320 free(lun_str); 321 if (retval != 1) { 322 log_warnx("XML_Parse failed"); 323 return (NULL); 324 } 325 326 conf = conf_new(); 327 328 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 329 struct cctl_lun_nv *nv; 330 331 if (lun->cfiscsi_target == NULL) { 332 log_debugx("CTL lun %ju wasn't managed by ctld; " 333 "ignoring", (uintmax_t)lun->lun_id); 334 continue; 335 } 336 337 targ = target_find(conf, lun->cfiscsi_target); 338 if (targ == NULL) { 339 #if 0 340 log_debugx("found new kernel target %s for CTL lun %ld", 341 lun->cfiscsi_target, lun->lun_id); 342 #endif 343 targ = target_new(conf, lun->cfiscsi_target); 344 if (targ == NULL) { 345 log_warnx("target_new failed"); 346 continue; 347 } 348 } 349 350 cl = lun_find(targ, lun->cfiscsi_lun); 351 if (cl != NULL) { 352 log_warnx("found CTL lun %ju, backing lun %d, target " 353 "%s, also backed by CTL lun %d; ignoring", 354 (uintmax_t) lun->lun_id, cl->l_lun, 355 cl->l_target->t_iqn, cl->l_ctl_lun); 356 continue; 357 } 358 359 log_debugx("found CTL lun %ju, backing lun %d, target %s", 360 (uintmax_t)lun->lun_id, lun->cfiscsi_lun, lun->cfiscsi_target); 361 362 cl = lun_new(targ, lun->cfiscsi_lun); 363 if (cl == NULL) { 364 log_warnx("lun_new failed"); 365 continue; 366 } 367 lun_set_backend(cl, lun->backend_type); 368 lun_set_blocksize(cl, lun->blocksize); 369 lun_set_device_id(cl, lun->device_id); 370 lun_set_serial(cl, lun->serial_number); 371 lun_set_size(cl, lun->size_blocks * cl->l_blocksize); 372 lun_set_ctl_lun(cl, lun->lun_id); 373 374 STAILQ_FOREACH(nv, &lun->attr_list, links) { 375 if (strcmp(nv->name, "file") == 0 || 376 strcmp(nv->name, "dev") == 0) { 377 lun_set_path(cl, nv->value); 378 continue; 379 } 380 lo = lun_option_new(cl, nv->name, nv->value); 381 if (lo == NULL) 382 log_warnx("unable to add CTL lun option %s " 383 "for CTL lun %ju for lun %d, target %s", 384 nv->name, (uintmax_t) lun->lun_id, 385 cl->l_lun, cl->l_target->t_iqn); 386 } 387 } 388 389 return (conf); 390 } 391 392 int 393 kernel_lun_add(struct lun *lun) 394 { 395 struct lun_option *lo; 396 struct ctl_lun_req req; 397 char *tmp; 398 int error, i, num_options; 399 400 bzero(&req, sizeof(req)); 401 402 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 403 req.reqtype = CTL_LUNREQ_CREATE; 404 405 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 406 407 if (lun->l_size != 0) 408 req.reqdata.create.lun_size_bytes = lun->l_size; 409 410 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 411 req.reqdata.create.device_type = T_DIRECT; 412 413 if (lun->l_serial != NULL) { 414 strlcpy(req.reqdata.create.serial_num, lun->l_serial, 415 sizeof(req.reqdata.create.serial_num)); 416 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 417 } 418 419 if (lun->l_device_id != NULL) { 420 strlcpy(req.reqdata.create.device_id, lun->l_device_id, 421 sizeof(req.reqdata.create.device_id)); 422 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 423 } 424 425 if (lun->l_path != NULL) { 426 lo = lun_option_find(lun, "file"); 427 if (lo != NULL) { 428 lun_option_set(lo, lun->l_path); 429 } else { 430 lo = lun_option_new(lun, "file", lun->l_path); 431 assert(lo != NULL); 432 } 433 } 434 435 lo = lun_option_find(lun, "cfiscsi_target"); 436 if (lo != NULL) { 437 lun_option_set(lo, lun->l_target->t_iqn); 438 } else { 439 lo = lun_option_new(lun, "cfiscsi_target", 440 lun->l_target->t_iqn); 441 assert(lo != NULL); 442 } 443 444 if (lun->l_target->t_alias != NULL) { 445 lo = lun_option_find(lun, "cfiscsi_target_alias"); 446 if (lo != NULL) { 447 lun_option_set(lo, lun->l_target->t_alias); 448 } else { 449 lo = lun_option_new(lun, "cfiscsi_target_alias", 450 lun->l_target->t_alias); 451 assert(lo != NULL); 452 } 453 } 454 455 asprintf(&tmp, "%d", lun->l_lun); 456 if (tmp == NULL) 457 log_errx(1, "asprintf"); 458 lo = lun_option_find(lun, "cfiscsi_lun"); 459 if (lo != NULL) { 460 lun_option_set(lo, tmp); 461 free(tmp); 462 } else { 463 lo = lun_option_new(lun, "cfiscsi_lun", tmp); 464 free(tmp); 465 assert(lo != NULL); 466 } 467 468 num_options = 0; 469 TAILQ_FOREACH(lo, &lun->l_options, lo_next) 470 num_options++; 471 472 req.num_be_args = num_options; 473 if (num_options > 0) { 474 req.be_args = malloc(num_options * sizeof(*req.be_args)); 475 if (req.be_args == NULL) { 476 log_warn("error allocating %zd bytes", 477 num_options * sizeof(*req.be_args)); 478 return (1); 479 } 480 481 i = 0; 482 TAILQ_FOREACH(lo, &lun->l_options, lo_next) { 483 /* 484 * +1 for the terminating '\0' 485 */ 486 req.be_args[i].namelen = strlen(lo->lo_name) + 1; 487 req.be_args[i].name = lo->lo_name; 488 req.be_args[i].vallen = strlen(lo->lo_value) + 1; 489 req.be_args[i].value = lo->lo_value; 490 req.be_args[i].flags = CTL_BEARG_ASCII | CTL_BEARG_RD; 491 i++; 492 } 493 assert(i == num_options); 494 } 495 496 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 497 free(req.be_args); 498 if (error != 0) { 499 log_warn("error issuing CTL_LUN_REQ ioctl"); 500 return (1); 501 } 502 503 if (req.status == CTL_LUN_ERROR) { 504 log_warnx("error returned from LUN creation request: %s", 505 req.error_str); 506 return (1); 507 } 508 509 if (req.status != CTL_LUN_OK) { 510 log_warnx("unknown LUN creation request status %d", 511 req.status); 512 return (1); 513 } 514 515 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id); 516 517 return (0); 518 } 519 520 int 521 kernel_lun_resize(struct lun *lun) 522 { 523 struct ctl_lun_req req; 524 525 bzero(&req, sizeof(req)); 526 527 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 528 req.reqtype = CTL_LUNREQ_MODIFY; 529 530 req.reqdata.modify.lun_id = lun->l_ctl_lun; 531 req.reqdata.modify.lun_size_bytes = lun->l_size; 532 533 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 534 log_warn("error issuing CTL_LUN_REQ ioctl"); 535 return (1); 536 } 537 538 if (req.status == CTL_LUN_ERROR) { 539 log_warnx("error returned from LUN modification request: %s", 540 req.error_str); 541 return (1); 542 } 543 544 if (req.status != CTL_LUN_OK) { 545 log_warnx("unknown LUN modification request status %d", 546 req.status); 547 return (1); 548 } 549 550 return (0); 551 } 552 553 int 554 kernel_lun_remove(struct lun *lun) 555 { 556 struct ctl_lun_req req; 557 558 bzero(&req, sizeof(req)); 559 560 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 561 req.reqtype = CTL_LUNREQ_RM; 562 563 req.reqdata.rm.lun_id = lun->l_ctl_lun; 564 565 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 566 log_warn("error issuing CTL_LUN_REQ ioctl"); 567 return (1); 568 } 569 570 if (req.status == CTL_LUN_ERROR) { 571 log_warnx("error returned from LUN removal request: %s", 572 req.error_str); 573 return (1); 574 } 575 576 if (req.status != CTL_LUN_OK) { 577 log_warnx("unknown LUN removal request status %d", req.status); 578 return (1); 579 } 580 581 return (0); 582 } 583 584 void 585 kernel_handoff(struct connection *conn) 586 { 587 struct ctl_iscsi req; 588 589 bzero(&req, sizeof(req)); 590 591 req.type = CTL_ISCSI_HANDOFF; 592 strlcpy(req.data.handoff.initiator_name, 593 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 594 strlcpy(req.data.handoff.initiator_addr, 595 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 596 if (conn->conn_initiator_alias != NULL) { 597 strlcpy(req.data.handoff.initiator_alias, 598 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 599 } 600 strlcpy(req.data.handoff.target_name, 601 conn->conn_target->t_iqn, sizeof(req.data.handoff.target_name)); 602 req.data.handoff.socket = conn->conn_socket; 603 req.data.handoff.portal_group_tag = 604 conn->conn_portal->p_portal_group->pg_tag; 605 if (conn->conn_header_digest == CONN_DIGEST_CRC32C) 606 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 607 if (conn->conn_data_digest == CONN_DIGEST_CRC32C) 608 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 609 req.data.handoff.cmdsn = conn->conn_cmdsn; 610 req.data.handoff.statsn = conn->conn_statsn; 611 req.data.handoff.max_recv_data_segment_length = 612 conn->conn_max_data_segment_length; 613 req.data.handoff.max_burst_length = conn->conn_max_burst_length; 614 req.data.handoff.immediate_data = conn->conn_immediate_data; 615 616 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 617 log_err(1, "error issuing CTL_ISCSI ioctl; " 618 "dropping connection"); 619 620 if (req.status != CTL_ISCSI_OK) 621 log_errx(1, "error returned from CTL iSCSI handoff request: " 622 "%s; dropping connection", req.error_str); 623 } 624 625 int 626 kernel_port_on(void) 627 { 628 struct ctl_port_entry entry; 629 int error; 630 631 bzero(&entry, sizeof(entry)); 632 633 entry.port_type = CTL_PORT_ISCSI; 634 entry.targ_port = -1; 635 636 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 637 if (error != 0) { 638 log_warn("CTL_ENABLE_PORT ioctl failed"); 639 return (-1); 640 } 641 642 return (0); 643 } 644 645 int 646 kernel_port_off(void) 647 { 648 struct ctl_port_entry entry; 649 int error; 650 651 bzero(&entry, sizeof(entry)); 652 653 entry.port_type = CTL_PORT_ISCSI; 654 entry.targ_port = -1; 655 656 error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry); 657 if (error != 0) { 658 log_warn("CTL_DISABLE_PORT ioctl failed"); 659 return (-1); 660 } 661 662 return (0); 663 } 664 665 #ifdef ICL_KERNEL_PROXY 666 void 667 kernel_listen(struct addrinfo *ai, bool iser) 668 { 669 struct ctl_iscsi req; 670 671 bzero(&req, sizeof(req)); 672 673 req.type = CTL_ISCSI_LISTEN; 674 req.data.listen.iser = iser; 675 req.data.listen.domain = ai->ai_family; 676 req.data.listen.socktype = ai->ai_socktype; 677 req.data.listen.protocol = ai->ai_protocol; 678 req.data.listen.addr = ai->ai_addr; 679 req.data.listen.addrlen = ai->ai_addrlen; 680 681 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 682 log_warn("error issuing CTL_ISCSI_LISTEN ioctl"); 683 } 684 685 int 686 kernel_accept(void) 687 { 688 struct ctl_iscsi req; 689 690 bzero(&req, sizeof(req)); 691 692 req.type = CTL_ISCSI_ACCEPT; 693 694 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 695 log_warn("error issuing CTL_ISCSI_LISTEN ioctl"); 696 return (0); 697 } 698 699 return (req.data.accept.connection_id); 700 } 701 702 void 703 kernel_send(struct pdu *pdu) 704 { 705 struct ctl_iscsi req; 706 707 bzero(&req, sizeof(req)); 708 709 req.type = CTL_ISCSI_SEND; 710 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 711 req.data.send.bhs = pdu->pdu_bhs; 712 req.data.send.data_segment_len = pdu->pdu_data_len; 713 req.data.send.data_segment = pdu->pdu_data; 714 715 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 716 log_err(1, "error issuing CTL_ISCSI ioctl; " 717 "dropping connection"); 718 719 if (req.status != CTL_ISCSI_OK) 720 log_errx(1, "error returned from CTL iSCSI send: " 721 "%s; dropping connection", req.error_str); 722 } 723 724 void 725 kernel_receive(struct pdu *pdu) 726 { 727 struct ctl_iscsi req; 728 729 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH); 730 if (pdu->pdu_data == NULL) 731 log_err(1, "malloc"); 732 733 bzero(&req, sizeof(req)); 734 735 req.type = CTL_ISCSI_RECEIVE; 736 req.data.receive.connection_id = pdu->pdu_connection->conn_socket; 737 req.data.receive.bhs = pdu->pdu_bhs; 738 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH; 739 req.data.receive.data_segment = pdu->pdu_data; 740 741 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 742 log_err(1, "error issuing CTL_ISCSI ioctl; " 743 "dropping connection"); 744 745 if (req.status != CTL_ISCSI_OK) 746 log_errx(1, "error returned from CTL iSCSI receive: " 747 "%s; dropping connection", req.error_str); 748 749 } 750 751 #endif /* ICL_KERNEL_PROXY */ 752 753 /* 754 * XXX: I CANT INTO LATIN 755 */ 756 void 757 kernel_capsicate(void) 758 { 759 int error; 760 cap_rights_t rights; 761 const unsigned long cmds[] = { CTL_ISCSI }; 762 763 cap_rights_init(&rights, CAP_IOCTL); 764 error = cap_rights_limit(ctl_fd, &rights); 765 if (error != 0 && errno != ENOSYS) 766 log_err(1, "cap_rights_limit"); 767 768 error = cap_ioctls_limit(ctl_fd, cmds, 769 sizeof(cmds) / sizeof(cmds[0])); 770 if (error != 0 && errno != ENOSYS) 771 log_err(1, "cap_ioctls_limit"); 772 773 error = cap_enter(); 774 if (error != 0 && errno != ENOSYS) 775 log_err(1, "cap_enter"); 776 777 if (cap_sandboxed()) 778 log_debugx("Capsicum capability mode enabled"); 779 else 780 log_warnx("Capsicum capability mode not supported"); 781 } 782 783