kernel.c revision 264526
1/*- 2 * Copyright (c) 2003, 2004 Silicon Graphics International Corp. 3 * Copyright (c) 1997-2007 Kenneth D. Merry 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * Portions of this software were developed by Edward Tomasz Napierala 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification. 16 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 17 * substantially similar to the "NO WARRANTY" disclaimer below 18 * ("Disclaimer") and any redistribution must be conditioned upon 19 * including a substantially similar Disclaimer requirement for further 20 * binary redistribution. 21 * 22 * NO WARRANTY 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGES. 34 * 35 * $FreeBSD: head/usr.sbin/ctld/kernel.c 264526 2014-04-16 10:29:34Z trasz $ 36 */ 37 38#include <sys/ioctl.h> 39#include <sys/types.h> 40#include <sys/stat.h> 41#include <sys/param.h> 42#include <sys/linker.h> 43#include <sys/queue.h> 44#include <sys/callout.h> 45#include <sys/sbuf.h> 46#include <sys/capsicum.h> 47#include <assert.h> 48#include <bsdxml.h> 49#include <ctype.h> 50#include <errno.h> 51#include <fcntl.h> 52#include <stdint.h> 53#include <stdio.h> 54#include <stdlib.h> 55#include <string.h> 56#include <strings.h> 57#include <cam/scsi/scsi_all.h> 58#include <cam/scsi/scsi_message.h> 59#include <cam/ctl/ctl.h> 60#include <cam/ctl/ctl_io.h> 61#include <cam/ctl/ctl_frontend_internal.h> 62#include <cam/ctl/ctl_backend.h> 63#include <cam/ctl/ctl_ioctl.h> 64#include <cam/ctl/ctl_backend_block.h> 65#include <cam/ctl/ctl_util.h> 66#include <cam/ctl/ctl_scsi_all.h> 67 68#include "ctld.h" 69 70#ifdef ICL_KERNEL_PROXY 71#include <netdb.h> 72#endif 73 74extern bool proxy_mode; 75 76static int ctl_fd = 0; 77 78void 79kernel_init(void) 80{ 81 int retval, saved_errno; 82 83 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 84 if (ctl_fd < 0 && errno == ENOENT) { 85 saved_errno = errno; 86 retval = kldload("ctl"); 87 if (retval != -1) 88 ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR); 89 else 90 errno = saved_errno; 91 } 92 if (ctl_fd < 0) 93 log_err(1, "failed to open %s", CTL_DEFAULT_DEV); 94} 95 96/* 97 * Name/value pair used for per-LUN attributes. 98 */ 99struct cctl_lun_nv { 100 char *name; 101 char *value; 102 STAILQ_ENTRY(cctl_lun_nv) links; 103}; 104 105/* 106 * Backend LUN information. 107 */ 108struct cctl_lun { 109 uint64_t lun_id; 110 char *backend_type; 111 uint64_t size_blocks; 112 uint32_t blocksize; 113 char *serial_number; 114 char *device_id; 115 char *cfiscsi_target; 116 char *cfiscsi_target_alias; 117 int cfiscsi_lun; 118 STAILQ_HEAD(,cctl_lun_nv) attr_list; 119 STAILQ_ENTRY(cctl_lun) links; 120}; 121 122struct cctl_devlist_data { 123 int num_luns; 124 STAILQ_HEAD(,cctl_lun) lun_list; 125 struct cctl_lun *cur_lun; 126 int level; 127 struct sbuf *cur_sb[32]; 128}; 129 130static void 131cctl_start_element(void *user_data, const char *name, const char **attr) 132{ 133 int i; 134 struct cctl_devlist_data *devlist; 135 struct cctl_lun *cur_lun; 136 137 devlist = (struct cctl_devlist_data *)user_data; 138 cur_lun = devlist->cur_lun; 139 devlist->level++; 140 if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) / 141 sizeof(devlist->cur_sb[0]))) 142 log_errx(1, "%s: too many nesting levels, %zd max", __func__, 143 sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0])); 144 145 devlist->cur_sb[devlist->level] = sbuf_new_auto(); 146 if (devlist->cur_sb[devlist->level] == NULL) 147 log_err(1, "%s: unable to allocate sbuf", __func__); 148 149 if (strcmp(name, "lun") == 0) { 150 if (cur_lun != NULL) 151 log_errx(1, "%s: improper lun element nesting", 152 __func__); 153 154 cur_lun = calloc(1, sizeof(*cur_lun)); 155 if (cur_lun == NULL) 156 log_err(1, "%s: cannot allocate %zd bytes", __func__, 157 sizeof(*cur_lun)); 158 159 devlist->num_luns++; 160 devlist->cur_lun = cur_lun; 161 162 STAILQ_INIT(&cur_lun->attr_list); 163 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links); 164 165 for (i = 0; attr[i] != NULL; i += 2) { 166 if (strcmp(attr[i], "id") == 0) { 167 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0); 168 } else { 169 log_errx(1, "%s: invalid LUN attribute %s = %s", 170 __func__, attr[i], attr[i+1]); 171 } 172 } 173 } 174} 175 176static void 177cctl_end_element(void *user_data, const char *name) 178{ 179 struct cctl_devlist_data *devlist; 180 struct cctl_lun *cur_lun; 181 char *str; 182 183 devlist = (struct cctl_devlist_data *)user_data; 184 cur_lun = devlist->cur_lun; 185 186 if ((cur_lun == NULL) 187 && (strcmp(name, "ctllunlist") != 0)) 188 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name); 189 190 if (devlist->cur_sb[devlist->level] == NULL) 191 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__, 192 devlist->level, name); 193 194 sbuf_finish(devlist->cur_sb[devlist->level]); 195 str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level])); 196 197 if (strlen(str) == 0) { 198 free(str); 199 str = NULL; 200 } 201 202 sbuf_delete(devlist->cur_sb[devlist->level]); 203 devlist->cur_sb[devlist->level] = NULL; 204 devlist->level--; 205 206 if (strcmp(name, "backend_type") == 0) { 207 cur_lun->backend_type = str; 208 str = NULL; 209 } else if (strcmp(name, "size") == 0) { 210 cur_lun->size_blocks = strtoull(str, NULL, 0); 211 } else if (strcmp(name, "blocksize") == 0) { 212 cur_lun->blocksize = strtoul(str, NULL, 0); 213 } else if (strcmp(name, "serial_number") == 0) { 214 cur_lun->serial_number = str; 215 str = NULL; 216 } else if (strcmp(name, "device_id") == 0) { 217 cur_lun->device_id = str; 218 str = NULL; 219 } else if (strcmp(name, "cfiscsi_target") == 0) { 220 cur_lun->cfiscsi_target = str; 221 str = NULL; 222 } else if (strcmp(name, "cfiscsi_target_alias") == 0) { 223 cur_lun->cfiscsi_target_alias = str; 224 str = NULL; 225 } else if (strcmp(name, "cfiscsi_lun") == 0) { 226 cur_lun->cfiscsi_lun = strtoul(str, NULL, 0); 227 } else if (strcmp(name, "lun") == 0) { 228 devlist->cur_lun = NULL; 229 } else if (strcmp(name, "ctllunlist") == 0) { 230 231 } else { 232 struct cctl_lun_nv *nv; 233 234 nv = calloc(1, sizeof(*nv)); 235 if (nv == NULL) 236 log_err(1, "%s: can't allocate %zd bytes for nv pair", 237 __func__, sizeof(*nv)); 238 239 nv->name = checked_strdup(name); 240 241 nv->value = str; 242 str = NULL; 243 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links); 244 } 245 246 free(str); 247} 248 249static void 250cctl_char_handler(void *user_data, const XML_Char *str, int len) 251{ 252 struct cctl_devlist_data *devlist; 253 254 devlist = (struct cctl_devlist_data *)user_data; 255 256 sbuf_bcat(devlist->cur_sb[devlist->level], str, len); 257} 258 259struct conf * 260conf_new_from_kernel(void) 261{ 262 struct conf *conf = NULL; 263 struct target *targ; 264 struct lun *cl; 265 struct lun_option *lo; 266 struct ctl_lun_list list; 267 struct cctl_devlist_data devlist; 268 struct cctl_lun *lun; 269 XML_Parser parser; 270 char *lun_str = NULL; 271 int lun_len; 272 int retval; 273 274 lun_len = 4096; 275 276 bzero(&devlist, sizeof(devlist)); 277 STAILQ_INIT(&devlist.lun_list); 278 279 log_debugx("obtaining previously configured CTL luns from the kernel"); 280 281retry: 282 lun_str = realloc(lun_str, lun_len); 283 if (lun_str == NULL) 284 log_err(1, "realloc"); 285 286 bzero(&list, sizeof(list)); 287 list.alloc_len = lun_len; 288 list.status = CTL_LUN_LIST_NONE; 289 list.lun_xml = lun_str; 290 291 if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) { 292 log_warn("error issuing CTL_LUN_LIST ioctl"); 293 free(lun_str); 294 return (NULL); 295 } 296 297 if (list.status == CTL_LUN_LIST_ERROR) { 298 log_warnx("error returned from CTL_LUN_LIST ioctl: %s", 299 list.error_str); 300 free(lun_str); 301 return (NULL); 302 } 303 304 if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) { 305 lun_len = lun_len << 1; 306 goto retry; 307 } 308 309 parser = XML_ParserCreate(NULL); 310 if (parser == NULL) { 311 log_warnx("unable to create XML parser"); 312 free(lun_str); 313 return (NULL); 314 } 315 316 XML_SetUserData(parser, &devlist); 317 XML_SetElementHandler(parser, cctl_start_element, cctl_end_element); 318 XML_SetCharacterDataHandler(parser, cctl_char_handler); 319 320 retval = XML_Parse(parser, lun_str, strlen(lun_str), 1); 321 XML_ParserFree(parser); 322 free(lun_str); 323 if (retval != 1) { 324 log_warnx("XML_Parse failed"); 325 return (NULL); 326 } 327 328 conf = conf_new(); 329 330 STAILQ_FOREACH(lun, &devlist.lun_list, links) { 331 struct cctl_lun_nv *nv; 332 333 if (lun->cfiscsi_target == NULL) { 334 log_debugx("CTL lun %ju wasn't managed by ctld; " 335 "ignoring", (uintmax_t)lun->lun_id); 336 continue; 337 } 338 339 targ = target_find(conf, lun->cfiscsi_target); 340 if (targ == NULL) { 341#if 0 342 log_debugx("found new kernel target %s for CTL lun %ld", 343 lun->cfiscsi_target, lun->lun_id); 344#endif 345 targ = target_new(conf, lun->cfiscsi_target); 346 if (targ == NULL) { 347 log_warnx("target_new failed"); 348 continue; 349 } 350 } 351 352 cl = lun_find(targ, lun->cfiscsi_lun); 353 if (cl != NULL) { 354 log_warnx("found CTL lun %ju, backing lun %d, target " 355 "%s, also backed by CTL lun %d; ignoring", 356 (uintmax_t) lun->lun_id, cl->l_lun, 357 cl->l_target->t_name, cl->l_ctl_lun); 358 continue; 359 } 360 361 log_debugx("found CTL lun %ju, backing lun %d, target %s", 362 (uintmax_t)lun->lun_id, lun->cfiscsi_lun, lun->cfiscsi_target); 363 364 cl = lun_new(targ, lun->cfiscsi_lun); 365 if (cl == NULL) { 366 log_warnx("lun_new failed"); 367 continue; 368 } 369 lun_set_backend(cl, lun->backend_type); 370 lun_set_blocksize(cl, lun->blocksize); 371 lun_set_device_id(cl, lun->device_id); 372 lun_set_serial(cl, lun->serial_number); 373 lun_set_size(cl, lun->size_blocks * cl->l_blocksize); 374 lun_set_ctl_lun(cl, lun->lun_id); 375 376 STAILQ_FOREACH(nv, &lun->attr_list, links) { 377 if (strcmp(nv->name, "file") == 0 || 378 strcmp(nv->name, "dev") == 0) { 379 lun_set_path(cl, nv->value); 380 continue; 381 } 382 lo = lun_option_new(cl, nv->name, nv->value); 383 if (lo == NULL) 384 log_warnx("unable to add CTL lun option %s " 385 "for CTL lun %ju for lun %d, target %s", 386 nv->name, (uintmax_t) lun->lun_id, 387 cl->l_lun, cl->l_target->t_name); 388 } 389 } 390 391 return (conf); 392} 393 394int 395kernel_lun_add(struct lun *lun) 396{ 397 struct lun_option *lo; 398 struct ctl_lun_req req; 399 char *tmp; 400 int error, i, num_options; 401 402 bzero(&req, sizeof(req)); 403 404 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 405 req.reqtype = CTL_LUNREQ_CREATE; 406 407 req.reqdata.create.blocksize_bytes = lun->l_blocksize; 408 409 if (lun->l_size != 0) 410 req.reqdata.create.lun_size_bytes = lun->l_size; 411 412 req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE; 413 req.reqdata.create.device_type = T_DIRECT; 414 415 if (lun->l_serial != NULL) { 416 strlcpy(req.reqdata.create.serial_num, lun->l_serial, 417 sizeof(req.reqdata.create.serial_num)); 418 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM; 419 } 420 421 if (lun->l_device_id != NULL) { 422 strlcpy(req.reqdata.create.device_id, lun->l_device_id, 423 sizeof(req.reqdata.create.device_id)); 424 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID; 425 } 426 427 if (lun->l_path != NULL) { 428 lo = lun_option_find(lun, "file"); 429 if (lo != NULL) { 430 lun_option_set(lo, lun->l_path); 431 } else { 432 lo = lun_option_new(lun, "file", lun->l_path); 433 assert(lo != NULL); 434 } 435 } 436 437 lo = lun_option_find(lun, "cfiscsi_target"); 438 if (lo != NULL) { 439 lun_option_set(lo, lun->l_target->t_name); 440 } else { 441 lo = lun_option_new(lun, "cfiscsi_target", 442 lun->l_target->t_name); 443 assert(lo != NULL); 444 } 445 446 if (lun->l_target->t_alias != NULL) { 447 lo = lun_option_find(lun, "cfiscsi_target_alias"); 448 if (lo != NULL) { 449 lun_option_set(lo, lun->l_target->t_alias); 450 } else { 451 lo = lun_option_new(lun, "cfiscsi_target_alias", 452 lun->l_target->t_alias); 453 assert(lo != NULL); 454 } 455 } 456 457 asprintf(&tmp, "%d", lun->l_lun); 458 if (tmp == NULL) 459 log_errx(1, "asprintf"); 460 lo = lun_option_find(lun, "cfiscsi_lun"); 461 if (lo != NULL) { 462 lun_option_set(lo, tmp); 463 free(tmp); 464 } else { 465 lo = lun_option_new(lun, "cfiscsi_lun", tmp); 466 free(tmp); 467 assert(lo != NULL); 468 } 469 470 num_options = 0; 471 TAILQ_FOREACH(lo, &lun->l_options, lo_next) 472 num_options++; 473 474 req.num_be_args = num_options; 475 if (num_options > 0) { 476 req.be_args = malloc(num_options * sizeof(*req.be_args)); 477 if (req.be_args == NULL) { 478 log_warn("error allocating %zd bytes", 479 num_options * sizeof(*req.be_args)); 480 return (1); 481 } 482 483 i = 0; 484 TAILQ_FOREACH(lo, &lun->l_options, lo_next) { 485 /* 486 * +1 for the terminating '\0' 487 */ 488 req.be_args[i].namelen = strlen(lo->lo_name) + 1; 489 req.be_args[i].name = lo->lo_name; 490 req.be_args[i].vallen = strlen(lo->lo_value) + 1; 491 req.be_args[i].value = lo->lo_value; 492 req.be_args[i].flags = CTL_BEARG_ASCII | CTL_BEARG_RD; 493 i++; 494 } 495 assert(i == num_options); 496 } 497 498 error = ioctl(ctl_fd, CTL_LUN_REQ, &req); 499 free(req.be_args); 500 if (error != 0) { 501 log_warn("error issuing CTL_LUN_REQ ioctl"); 502 return (1); 503 } 504 505 if (req.status == CTL_LUN_ERROR) { 506 log_warnx("error returned from LUN creation request: %s", 507 req.error_str); 508 return (1); 509 } 510 511 if (req.status != CTL_LUN_OK) { 512 log_warnx("unknown LUN creation request status %d", 513 req.status); 514 return (1); 515 } 516 517 lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id); 518 519 return (0); 520} 521 522int 523kernel_lun_resize(struct lun *lun) 524{ 525 struct ctl_lun_req req; 526 527 bzero(&req, sizeof(req)); 528 529 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 530 req.reqtype = CTL_LUNREQ_MODIFY; 531 532 req.reqdata.modify.lun_id = lun->l_ctl_lun; 533 req.reqdata.modify.lun_size_bytes = lun->l_size; 534 535 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 536 log_warn("error issuing CTL_LUN_REQ ioctl"); 537 return (1); 538 } 539 540 if (req.status == CTL_LUN_ERROR) { 541 log_warnx("error returned from LUN modification request: %s", 542 req.error_str); 543 return (1); 544 } 545 546 if (req.status != CTL_LUN_OK) { 547 log_warnx("unknown LUN modification request status %d", 548 req.status); 549 return (1); 550 } 551 552 return (0); 553} 554 555int 556kernel_lun_remove(struct lun *lun) 557{ 558 struct ctl_lun_req req; 559 560 bzero(&req, sizeof(req)); 561 562 strlcpy(req.backend, lun->l_backend, sizeof(req.backend)); 563 req.reqtype = CTL_LUNREQ_RM; 564 565 req.reqdata.rm.lun_id = lun->l_ctl_lun; 566 567 if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) { 568 log_warn("error issuing CTL_LUN_REQ ioctl"); 569 return (1); 570 } 571 572 if (req.status == CTL_LUN_ERROR) { 573 log_warnx("error returned from LUN removal request: %s", 574 req.error_str); 575 return (1); 576 } 577 578 if (req.status != CTL_LUN_OK) { 579 log_warnx("unknown LUN removal request status %d", req.status); 580 return (1); 581 } 582 583 return (0); 584} 585 586void 587kernel_handoff(struct connection *conn) 588{ 589 struct ctl_iscsi req; 590 591 bzero(&req, sizeof(req)); 592 593 req.type = CTL_ISCSI_HANDOFF; 594 strlcpy(req.data.handoff.initiator_name, 595 conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name)); 596 strlcpy(req.data.handoff.initiator_addr, 597 conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr)); 598 if (conn->conn_initiator_alias != NULL) { 599 strlcpy(req.data.handoff.initiator_alias, 600 conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias)); 601 } 602 strlcpy(req.data.handoff.target_name, 603 conn->conn_target->t_name, sizeof(req.data.handoff.target_name)); 604#ifdef ICL_KERNEL_PROXY 605 if (proxy_mode) 606 req.data.handoff.connection_id = conn->conn_socket; 607 else 608 req.data.handoff.socket = conn->conn_socket; 609#else 610 req.data.handoff.socket = conn->conn_socket; 611#endif 612 req.data.handoff.portal_group_tag = 613 conn->conn_portal->p_portal_group->pg_tag; 614 if (conn->conn_header_digest == CONN_DIGEST_CRC32C) 615 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C; 616 if (conn->conn_data_digest == CONN_DIGEST_CRC32C) 617 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C; 618 req.data.handoff.cmdsn = conn->conn_cmdsn; 619 req.data.handoff.statsn = conn->conn_statsn; 620 req.data.handoff.max_recv_data_segment_length = 621 conn->conn_max_data_segment_length; 622 req.data.handoff.max_burst_length = conn->conn_max_burst_length; 623 req.data.handoff.immediate_data = conn->conn_immediate_data; 624 625 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 626 log_err(1, "error issuing CTL_ISCSI ioctl; " 627 "dropping connection"); 628 } 629 630 if (req.status != CTL_ISCSI_OK) { 631 log_errx(1, "error returned from CTL iSCSI handoff request: " 632 "%s; dropping connection", req.error_str); 633 } 634} 635 636int 637kernel_port_on(void) 638{ 639 struct ctl_port_entry entry; 640 int error; 641 642 bzero(&entry, sizeof(entry)); 643 644 entry.port_type = CTL_PORT_ISCSI; 645 entry.targ_port = -1; 646 647 error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry); 648 if (error != 0) { 649 log_warn("CTL_ENABLE_PORT ioctl failed"); 650 return (-1); 651 } 652 653 return (0); 654} 655 656int 657kernel_port_off(void) 658{ 659 struct ctl_port_entry entry; 660 int error; 661 662 bzero(&entry, sizeof(entry)); 663 664 entry.port_type = CTL_PORT_ISCSI; 665 entry.targ_port = -1; 666 667 error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry); 668 if (error != 0) { 669 log_warn("CTL_DISABLE_PORT ioctl failed"); 670 return (-1); 671 } 672 673 return (0); 674} 675 676#ifdef ICL_KERNEL_PROXY 677void 678kernel_listen(struct addrinfo *ai, bool iser, int portal_id) 679{ 680 struct ctl_iscsi req; 681 682 bzero(&req, sizeof(req)); 683 684 req.type = CTL_ISCSI_LISTEN; 685 req.data.listen.iser = iser; 686 req.data.listen.domain = ai->ai_family; 687 req.data.listen.socktype = ai->ai_socktype; 688 req.data.listen.protocol = ai->ai_protocol; 689 req.data.listen.addr = ai->ai_addr; 690 req.data.listen.addrlen = ai->ai_addrlen; 691 req.data.listen.portal_id = portal_id; 692 693 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 694 log_err(1, "error issuing CTL_ISCSI ioctl"); 695 696 if (req.status != CTL_ISCSI_OK) { 697 log_errx(1, "error returned from CTL iSCSI listen: %s", 698 req.error_str); 699 } 700} 701 702void 703kernel_accept(int *connection_id, int *portal_id) 704{ 705 struct ctl_iscsi req; 706 707 bzero(&req, sizeof(req)); 708 709 req.type = CTL_ISCSI_ACCEPT; 710 711 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) 712 log_err(1, "error issuing CTL_ISCSI ioctl"); 713 714 if (req.status != CTL_ISCSI_OK) { 715 log_errx(1, "error returned from CTL iSCSI accept: %s", 716 req.error_str); 717 } 718 719 *connection_id = req.data.accept.connection_id; 720 *portal_id = req.data.accept.portal_id; 721} 722 723void 724kernel_send(struct pdu *pdu) 725{ 726 struct ctl_iscsi req; 727 728 bzero(&req, sizeof(req)); 729 730 req.type = CTL_ISCSI_SEND; 731 req.data.send.connection_id = pdu->pdu_connection->conn_socket; 732 req.data.send.bhs = pdu->pdu_bhs; 733 req.data.send.data_segment_len = pdu->pdu_data_len; 734 req.data.send.data_segment = pdu->pdu_data; 735 736 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 737 log_err(1, "error issuing CTL_ISCSI ioctl; " 738 "dropping connection"); 739 } 740 741 if (req.status != CTL_ISCSI_OK) { 742 log_errx(1, "error returned from CTL iSCSI send: " 743 "%s; dropping connection", req.error_str); 744 } 745} 746 747void 748kernel_receive(struct pdu *pdu) 749{ 750 struct ctl_iscsi req; 751 752 pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH); 753 if (pdu->pdu_data == NULL) 754 log_err(1, "malloc"); 755 756 bzero(&req, sizeof(req)); 757 758 req.type = CTL_ISCSI_RECEIVE; 759 req.data.receive.connection_id = pdu->pdu_connection->conn_socket; 760 req.data.receive.bhs = pdu->pdu_bhs; 761 req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH; 762 req.data.receive.data_segment = pdu->pdu_data; 763 764 if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) { 765 log_err(1, "error issuing CTL_ISCSI ioctl; " 766 "dropping connection"); 767 } 768 769 if (req.status != CTL_ISCSI_OK) { 770 log_errx(1, "error returned from CTL iSCSI receive: " 771 "%s; dropping connection", req.error_str); 772 } 773 774} 775 776#endif /* ICL_KERNEL_PROXY */ 777 778/* 779 * XXX: I CANT INTO LATIN 780 */ 781void 782kernel_capsicate(void) 783{ 784 int error; 785 cap_rights_t rights; 786 const unsigned long cmds[] = { CTL_ISCSI }; 787 788 cap_rights_init(&rights, CAP_IOCTL); 789 error = cap_rights_limit(ctl_fd, &rights); 790 if (error != 0 && errno != ENOSYS) 791 log_err(1, "cap_rights_limit"); 792 793 error = cap_ioctls_limit(ctl_fd, cmds, 794 sizeof(cmds) / sizeof(cmds[0])); 795 if (error != 0 && errno != ENOSYS) 796 log_err(1, "cap_ioctls_limit"); 797 798 error = cap_enter(); 799 if (error != 0 && errno != ENOSYS) 800 log_err(1, "cap_enter"); 801 802 if (cap_sandboxed()) 803 log_debugx("Capsicum capability mode enabled"); 804 else 805 log_warnx("Capsicum capability mode not supported"); 806} 807 808