usr.sbin/ctld/kernel.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2003, 2004 Silicon Graphics International Corp.
   5  * Copyright (c) 1997-2007 Kenneth D. Merry
   6  * Copyright (c) 2012 The FreeBSD Foundation
   7  * Copyright (c) 2017 Jakub Wojciech Klama <jceel@FreeBSD.org>
   8  * All rights reserved.
   9  *
  10  * Portions of this software were developed by Edward Tomasz Napierala
  11  * under sponsorship from the FreeBSD Foundation.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions, and the following disclaimer,
  18  *    without modification.
  19  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  20  *    substantially similar to the "NO WARRANTY" disclaimer below
  21  *    ("Disclaimer") and any redistribution must be conditioned upon
  22  *    including a substantially similar Disclaimer requirement for further
  23  *    binary redistribution.
  24  *
  25  * NO WARRANTY
  26  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  27  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  28  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  29  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  30  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  34  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  35  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36  * POSSIBILITY OF SUCH DAMAGES.
  37  *
  38  */
  39
  40 #include <sys/cdefs.h>
  41 __FBSDID("$FreeBSD$");
  42
  43 #include <sys/param.h>
  44 #include <sys/capsicum.h>
  45 #include <sys/callout.h>
  46 #include <sys/ioctl.h>
  47 #include <sys/linker.h>
  48 #include <sys/module.h>
  49 #include <sys/queue.h>
  50 #include <sys/sbuf.h>
  51 #include <sys/nv.h>
  52 #include <sys/stat.h>
  53 #include <assert.h>
  54 #include <bsdxml.h>
  55 #include <ctype.h>
  56 #include <errno.h>
  57 #include <fcntl.h>
  58 #include <stdint.h>
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <string.h>
  62 #include <strings.h>
  63 #include <cam/scsi/scsi_all.h>
  64 #include <cam/scsi/scsi_message.h>
  65 #include <cam/ctl/ctl.h>
  66 #include <cam/ctl/ctl_io.h>
  67 #include <cam/ctl/ctl_backend.h>
  68 #include <cam/ctl/ctl_ioctl.h>
  69 #include <cam/ctl/ctl_util.h>
  70 #include <cam/ctl/ctl_scsi_all.h>
  71
  72 #include "ctld.h"
  73
  74 #ifdef ICL_KERNEL_PROXY
  75 #include <netdb.h>
  76 #endif
  77
  78 #define NVLIST_BUFSIZE  1024
  79
  80 extern bool proxy_mode;
  81
  82 static int      ctl_fd = 0;
  83
  84 void
  85 kernel_init(void)
  86 {
  87         int retval, saved_errno;
  88
  89         ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR);
  90         if (ctl_fd < 0 && errno == ENOENT) {
  91                 saved_errno = errno;
  92                 retval = kldload("ctl");
  93                 if (retval != -1)
  94                         ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR);
  95                 else
  96                         errno = saved_errno;
  97         }
  98         if (ctl_fd < 0)
  99                 log_err(1, "failed to open %s", CTL_DEFAULT_DEV);
 100 #ifdef  WANT_ISCSI
 101         else {
 102                 saved_errno = errno;
 103                 if (modfind("cfiscsi") == -1 && kldload("cfiscsi") == -1)
 104                         log_warn("couldn't load cfiscsi");
 105                 errno = saved_errno;
 106         }
 107 #endif
 108 }
 109
 110 /*
 111  * Name/value pair used for per-LUN attributes.
 112  */
 113 struct cctl_lun_nv {
 114         char *name;
 115         char *value;
 116         STAILQ_ENTRY(cctl_lun_nv) links;
 117 };
 118
 119 /*
 120  * Backend LUN information.
 121  */
 122 struct cctl_lun {
 123         uint64_t lun_id;
 124         char *backend_type;
 125         uint8_t device_type;
 126         uint64_t size_blocks;
 127         uint32_t blocksize;
 128         char *serial_number;
 129         char *device_id;
 130         char *ctld_name;
 131         STAILQ_HEAD(,cctl_lun_nv) attr_list;
 132         STAILQ_ENTRY(cctl_lun) links;
 133 };
 134
 135 struct cctl_port {
 136         uint32_t port_id;
 137         char *port_frontend;
 138         char *port_name;
 139         int pp;
 140         int vp;
 141         int cfiscsi_state;
 142         char *cfiscsi_target;
 143         uint16_t cfiscsi_portal_group_tag;
 144         char *ctld_portal_group_name;
 145         STAILQ_HEAD(,cctl_lun_nv) attr_list;
 146         STAILQ_ENTRY(cctl_port) links;
 147 };
 148
 149 struct cctl_devlist_data {
 150         int num_luns;
 151         STAILQ_HEAD(,cctl_lun) lun_list;
 152         struct cctl_lun *cur_lun;
 153         int num_ports;
 154         STAILQ_HEAD(,cctl_port) port_list;
 155         struct cctl_port *cur_port;
 156         int level;
 157         struct sbuf *cur_sb[32];
 158 };
 159
 160 static void
 161 cctl_start_element(void *user_data, const char *name, const char **attr)
 162 {
 163         int i;
 164         struct cctl_devlist_data *devlist;
 165         struct cctl_lun *cur_lun;
 166
 167         devlist = (struct cctl_devlist_data *)user_data;
 168         cur_lun = devlist->cur_lun;
 169         devlist->level++;
 170         if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
 171             sizeof(devlist->cur_sb[0])))
 172                 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
 173                      sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
 174
 175         devlist->cur_sb[devlist->level] = sbuf_new_auto();
 176         if (devlist->cur_sb[devlist->level] == NULL)
 177                 log_err(1, "%s: unable to allocate sbuf", __func__);
 178
 179         if (strcmp(name, "lun") == 0) {
 180                 if (cur_lun != NULL)
 181                         log_errx(1, "%s: improper lun element nesting",
 182                             __func__);
 183
 184                 cur_lun = calloc(1, sizeof(*cur_lun));
 185                 if (cur_lun == NULL)
 186                         log_err(1, "%s: cannot allocate %zd bytes", __func__,
 187                             sizeof(*cur_lun));
 188
 189                 devlist->num_luns++;
 190                 devlist->cur_lun = cur_lun;
 191
 192                 STAILQ_INIT(&cur_lun->attr_list);
 193                 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links);
 194
 195                 for (i = 0; attr[i] != NULL; i += 2) {
 196                         if (strcmp(attr[i], "id") == 0) {
 197                                 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0);
 198                         } else {
 199                                 log_errx(1, "%s: invalid LUN attribute %s = %s",
 200                                      __func__, attr[i], attr[i+1]);
 201                         }
 202                 }
 203         }
 204 }
 205
 206 static void
 207 cctl_end_element(void *user_data, const char *name)
 208 {
 209         struct cctl_devlist_data *devlist;
 210         struct cctl_lun *cur_lun;
 211         char *str;
 212
 213         devlist = (struct cctl_devlist_data *)user_data;
 214         cur_lun = devlist->cur_lun;
 215
 216         if ((cur_lun == NULL)
 217          && (strcmp(name, "ctllunlist") != 0))
 218                 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name);
 219
 220         if (devlist->cur_sb[devlist->level] == NULL)
 221                 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
 222                      devlist->level, name);
 223
 224         sbuf_finish(devlist->cur_sb[devlist->level]);
 225         str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
 226
 227         if (strlen(str) == 0) {
 228                 free(str);
 229                 str = NULL;
 230         }
 231
 232         sbuf_delete(devlist->cur_sb[devlist->level]);
 233         devlist->cur_sb[devlist->level] = NULL;
 234         devlist->level--;
 235
 236         if (strcmp(name, "backend_type") == 0) {
 237                 cur_lun->backend_type = str;
 238                 str = NULL;
 239         } else if (strcmp(name, "lun_type") == 0) {
 240                 cur_lun->device_type = strtoull(str, NULL, 0);
 241         } else if (strcmp(name, "size") == 0) {
 242                 cur_lun->size_blocks = strtoull(str, NULL, 0);
 243         } else if (strcmp(name, "blocksize") == 0) {
 244                 cur_lun->blocksize = strtoul(str, NULL, 0);
 245         } else if (strcmp(name, "serial_number") == 0) {
 246                 cur_lun->serial_number = str;
 247                 str = NULL;
 248         } else if (strcmp(name, "device_id") == 0) {
 249                 cur_lun->device_id = str;
 250                 str = NULL;
 251         } else if (strcmp(name, "ctld_name") == 0) {
 252                 cur_lun->ctld_name = str;
 253                 str = NULL;
 254         } else if (strcmp(name, "lun") == 0) {
 255                 devlist->cur_lun = NULL;
 256         } else if (strcmp(name, "ctllunlist") == 0) {
 257                 /* Nothing. */
 258         } else {
 259                 struct cctl_lun_nv *nv;
 260
 261                 nv = calloc(1, sizeof(*nv));
 262                 if (nv == NULL)
 263                         log_err(1, "%s: can't allocate %zd bytes for nv pair",
 264                             __func__, sizeof(*nv));
 265
 266                 nv->name = checked_strdup(name);
 267
 268                 nv->value = str;
 269                 str = NULL;
 270                 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links);
 271         }
 272
 273         free(str);
 274 }
 275
 276 static void
 277 cctl_start_pelement(void *user_data, const char *name, const char **attr)
 278 {
 279         int i;
 280         struct cctl_devlist_data *devlist;
 281         struct cctl_port *cur_port;
 282
 283         devlist = (struct cctl_devlist_data *)user_data;
 284         cur_port = devlist->cur_port;
 285         devlist->level++;
 286         if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
 287             sizeof(devlist->cur_sb[0])))
 288                 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
 289                      sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
 290
 291         devlist->cur_sb[devlist->level] = sbuf_new_auto();
 292         if (devlist->cur_sb[devlist->level] == NULL)
 293                 log_err(1, "%s: unable to allocate sbuf", __func__);
 294
 295         if (strcmp(name, "targ_port") == 0) {
 296                 if (cur_port != NULL)
 297                         log_errx(1, "%s: improper port element nesting (%s)",
 298                             __func__, name);
 299
 300                 cur_port = calloc(1, sizeof(*cur_port));
 301                 if (cur_port == NULL)
 302                         log_err(1, "%s: cannot allocate %zd bytes", __func__,
 303                             sizeof(*cur_port));
 304
 305                 devlist->num_ports++;
 306                 devlist->cur_port = cur_port;
 307
 308                 STAILQ_INIT(&cur_port->attr_list);
 309                 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links);
 310
 311                 for (i = 0; attr[i] != NULL; i += 2) {
 312                         if (strcmp(attr[i], "id") == 0) {
 313                                 cur_port->port_id = strtoul(attr[i+1], NULL, 0);
 314                         } else {
 315                                 log_errx(1, "%s: invalid LUN attribute %s = %s",
 316                                      __func__, attr[i], attr[i+1]);
 317                         }
 318                 }
 319         }
 320 }
 321
 322 static void
 323 cctl_end_pelement(void *user_data, const char *name)
 324 {
 325         struct cctl_devlist_data *devlist;
 326         struct cctl_port *cur_port;
 327         char *str;
 328
 329         devlist = (struct cctl_devlist_data *)user_data;
 330         cur_port = devlist->cur_port;
 331
 332         if ((cur_port == NULL)
 333          && (strcmp(name, "ctlportlist") != 0))
 334                 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name);
 335
 336         if (devlist->cur_sb[devlist->level] == NULL)
 337                 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
 338                      devlist->level, name);
 339
 340         sbuf_finish(devlist->cur_sb[devlist->level]);
 341         str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
 342
 343         if (strlen(str) == 0) {
 344                 free(str);
 345                 str = NULL;
 346         }
 347
 348         sbuf_delete(devlist->cur_sb[devlist->level]);
 349         devlist->cur_sb[devlist->level] = NULL;
 350         devlist->level--;
 351
 352         if (strcmp(name, "frontend_type") == 0) {
 353                 cur_port->port_frontend = str;
 354                 str = NULL;
 355         } else if (strcmp(name, "port_name") == 0) {
 356                 cur_port->port_name = str;
 357                 str = NULL;
 358         } else if (strcmp(name, "physical_port") == 0) {
 359                 cur_port->pp = strtoul(str, NULL, 0);
 360         } else if (strcmp(name, "virtual_port") == 0) {
 361                 cur_port->vp = strtoul(str, NULL, 0);
 362         } else if (strcmp(name, "cfiscsi_target") == 0) {
 363                 cur_port->cfiscsi_target = str;
 364                 str = NULL;
 365         } else if (strcmp(name, "cfiscsi_state") == 0) {
 366                 cur_port->cfiscsi_state = strtoul(str, NULL, 0);
 367         } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) {
 368                 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0);
 369         } else if (strcmp(name, "ctld_portal_group_name") == 0) {
 370                 cur_port->ctld_portal_group_name = str;
 371                 str = NULL;
 372         } else if (strcmp(name, "targ_port") == 0) {
 373                 devlist->cur_port = NULL;
 374         } else if (strcmp(name, "ctlportlist") == 0) {
 375                 /* Nothing. */
 376         } else {
 377                 struct cctl_lun_nv *nv;
 378
 379                 nv = calloc(1, sizeof(*nv));
 380                 if (nv == NULL)
 381                         log_err(1, "%s: can't allocate %zd bytes for nv pair",
 382                             __func__, sizeof(*nv));
 383
 384                 nv->name = checked_strdup(name);
 385
 386                 nv->value = str;
 387                 str = NULL;
 388                 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links);
 389         }
 390
 391         free(str);
 392 }
 393
 394 static void
 395 cctl_char_handler(void *user_data, const XML_Char *str, int len)
 396 {
 397         struct cctl_devlist_data *devlist;
 398
 399         devlist = (struct cctl_devlist_data *)user_data;
 400
 401         sbuf_bcat(devlist->cur_sb[devlist->level], str, len);
 402 }
 403
 404 struct conf *
 405 conf_new_from_kernel(void)
 406 {
 407         struct conf *conf = NULL;
 408         struct target *targ;
 409         struct portal_group *pg;
 410         struct pport *pp;
 411         struct port *cp;
 412         struct lun *cl;
 413         struct option *o;
 414         struct ctl_lun_list list;
 415         struct cctl_devlist_data devlist;
 416         struct cctl_lun *lun;
 417         struct cctl_port *port;
 418         XML_Parser parser;
 419         char *str, *name;
 420         int len, retval;
 421
 422         bzero(&devlist, sizeof(devlist));
 423         STAILQ_INIT(&devlist.lun_list);
 424         STAILQ_INIT(&devlist.port_list);
 425
 426         log_debugx("obtaining previously configured CTL luns from the kernel");
 427
 428         str = NULL;
 429         len = 4096;
 430 retry:
 431         str = realloc(str, len);
 432         if (str == NULL)
 433                 log_err(1, "realloc");
 434
 435         bzero(&list, sizeof(list));
 436         list.alloc_len = len;
 437         list.status = CTL_LUN_LIST_NONE;
 438         list.lun_xml = str;
 439
 440         if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) {
 441                 log_warn("error issuing CTL_LUN_LIST ioctl");
 442                 free(str);
 443                 return (NULL);
 444         }
 445
 446         if (list.status == CTL_LUN_LIST_ERROR) {
 447                 log_warnx("error returned from CTL_LUN_LIST ioctl: %s",
 448                     list.error_str);
 449                 free(str);
 450                 return (NULL);
 451         }
 452
 453         if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
 454                 len = len << 1;
 455                 goto retry;
 456         }
 457
 458         parser = XML_ParserCreate(NULL);
 459         if (parser == NULL) {
 460                 log_warnx("unable to create XML parser");
 461                 free(str);
 462                 return (NULL);
 463         }
 464
 465         XML_SetUserData(parser, &devlist);
 466         XML_SetElementHandler(parser, cctl_start_element, cctl_end_element);
 467         XML_SetCharacterDataHandler(parser, cctl_char_handler);
 468
 469         retval = XML_Parse(parser, str, strlen(str), 1);
 470         XML_ParserFree(parser);
 471         free(str);
 472         if (retval != 1) {
 473                 log_warnx("XML_Parse failed");
 474                 return (NULL);
 475         }
 476
 477         str = NULL;
 478         len = 4096;
 479 retry_port:
 480         str = realloc(str, len);
 481         if (str == NULL)
 482                 log_err(1, "realloc");
 483
 484         bzero(&list, sizeof(list));
 485         list.alloc_len = len;
 486         list.status = CTL_LUN_LIST_NONE;
 487         list.lun_xml = str;
 488
 489         if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) {
 490                 log_warn("error issuing CTL_PORT_LIST ioctl");
 491                 free(str);
 492                 return (NULL);
 493         }
 494
 495         if (list.status == CTL_LUN_LIST_ERROR) {
 496                 log_warnx("error returned from CTL_PORT_LIST ioctl: %s",
 497                     list.error_str);
 498                 free(str);
 499                 return (NULL);
 500         }
 501
 502         if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
 503                 len = len << 1;
 504                 goto retry_port;
 505         }
 506
 507         parser = XML_ParserCreate(NULL);
 508         if (parser == NULL) {
 509                 log_warnx("unable to create XML parser");
 510                 free(str);
 511                 return (NULL);
 512         }
 513
 514         XML_SetUserData(parser, &devlist);
 515         XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement);
 516         XML_SetCharacterDataHandler(parser, cctl_char_handler);
 517
 518         retval = XML_Parse(parser, str, strlen(str), 1);
 519         XML_ParserFree(parser);
 520         free(str);
 521         if (retval != 1) {
 522                 log_warnx("XML_Parse failed");
 523                 return (NULL);
 524         }
 525
 526         conf = conf_new();
 527
 528         name = NULL;
 529         STAILQ_FOREACH(port, &devlist.port_list, links) {
 530                 if (strcmp(port->port_frontend, "ha") == 0)
 531                         continue;
 532                 free(name);
 533                 if (port->pp == 0 && port->vp == 0) {
 534                         name = checked_strdup(port->port_name);
 535                 } else if (port->vp == 0) {
 536                         retval = asprintf(&name, "%s/%d",
 537                             port->port_name, port->pp);
 538                         if (retval <= 0)
 539                                 log_err(1, "asprintf");
 540                 } else {
 541                         retval = asprintf(&name, "%s/%d/%d",
 542                             port->port_name, port->pp, port->vp);
 543                         if (retval <= 0)
 544                                 log_err(1, "asprintf");
 545                 }
 546
 547                 if (port->cfiscsi_target == NULL) {
 548                         log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ",
 549                             port->port_id, name);
 550                         pp = pport_find(conf, name);
 551                         if (pp == NULL) {
 552 #if 0
 553                                 log_debugx("found new kernel port %u \"%s\"",
 554                                     port->port_id, name);
 555 #endif
 556                                 pp = pport_new(conf, name, port->port_id);
 557                                 if (pp == NULL) {
 558                                         log_warnx("pport_new failed");
 559                                         continue;
 560                                 }
 561                         }
 562                         continue;
 563                 }
 564                 if (port->cfiscsi_state != 1) {
 565                         log_debugx("CTL port %ju is not active (%d); ignoring",
 566                             (uintmax_t)port->port_id, port->cfiscsi_state);
 567                         continue;
 568                 }
 569
 570                 targ = target_find(conf, port->cfiscsi_target);
 571                 if (targ == NULL) {
 572 #if 0
 573                         log_debugx("found new kernel target %s for CTL port %ld",
 574                             port->cfiscsi_target, port->port_id);
 575 #endif
 576                         targ = target_new(conf, port->cfiscsi_target);
 577                         if (targ == NULL) {
 578                                 log_warnx("target_new failed");
 579                                 continue;
 580                         }
 581                 }
 582
 583                 if (port->ctld_portal_group_name == NULL)
 584                         continue;
 585                 pg = portal_group_find(conf, port->ctld_portal_group_name);
 586                 if (pg == NULL) {
 587 #if 0
 588                         log_debugx("found new kernel portal group %s for CTL port %ld",
 589                             port->ctld_portal_group_name, port->port_id);
 590 #endif
 591                         pg = portal_group_new(conf, port->ctld_portal_group_name);
 592                         if (pg == NULL) {
 593                                 log_warnx("portal_group_new failed");
 594                                 continue;
 595                         }
 596                 }
 597                 pg->pg_tag = port->cfiscsi_portal_group_tag;
 598                 cp = port_new(conf, targ, pg);
 599                 if (cp == NULL) {
 600                         log_warnx("port_new failed");
 601                         continue;
 602                 }
 603                 cp->p_ctl_port = port->port_id;
 604         }
 605         free(name);
 606
 607         STAILQ_FOREACH(lun, &devlist.lun_list, links) {
 608                 struct cctl_lun_nv *nv;
 609
 610                 if (lun->ctld_name == NULL) {
 611                         log_debugx("CTL lun %ju wasn't managed by ctld; "
 612                             "ignoring", (uintmax_t)lun->lun_id);
 613                         continue;
 614                 }
 615
 616                 cl = lun_find(conf, lun->ctld_name);
 617                 if (cl != NULL) {
 618                         log_warnx("found CTL lun %ju \"%s\", "
 619                             "also backed by CTL lun %d; ignoring",
 620                             (uintmax_t)lun->lun_id, lun->ctld_name,
 621                             cl->l_ctl_lun);
 622                         continue;
 623                 }
 624
 625                 log_debugx("found CTL lun %ju \"%s\"",
 626                     (uintmax_t)lun->lun_id, lun->ctld_name);
 627
 628                 cl = lun_new(conf, lun->ctld_name);
 629                 if (cl == NULL) {
 630                         log_warnx("lun_new failed");
 631                         continue;
 632                 }
 633                 lun_set_backend(cl, lun->backend_type);
 634                 lun_set_device_type(cl, lun->device_type);
 635                 lun_set_blocksize(cl, lun->blocksize);
 636                 lun_set_device_id(cl, lun->device_id);
 637                 lun_set_serial(cl, lun->serial_number);
 638                 lun_set_size(cl, lun->size_blocks * cl->l_blocksize);
 639                 lun_set_ctl_lun(cl, lun->lun_id);
 640
 641                 STAILQ_FOREACH(nv, &lun->attr_list, links) {
 642                         if (strcmp(nv->name, "file") == 0 ||
 643                             strcmp(nv->name, "dev") == 0) {
 644                                 lun_set_path(cl, nv->value);
 645                                 continue;
 646                         }
 647                         o = option_new(&cl->l_options, nv->name, nv->value);
 648                         if (o == NULL)
 649                                 log_warnx("unable to add CTL lun option %s "
 650                                     "for CTL lun %ju \"%s\"",
 651                                     nv->name, (uintmax_t) lun->lun_id,
 652                                     cl->l_name);
 653                 }
 654         }
 655
 656         return (conf);
 657 }
 658
 659 int
 660 kernel_lun_add(struct lun *lun)
 661 {
 662         struct option *o;
 663         struct ctl_lun_req req;
 664         int error;
 665
 666         bzero(&req, sizeof(req));
 667
 668         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 669         req.reqtype = CTL_LUNREQ_CREATE;
 670
 671         req.reqdata.create.blocksize_bytes = lun->l_blocksize;
 672
 673         if (lun->l_size != 0)
 674                 req.reqdata.create.lun_size_bytes = lun->l_size;
 675
 676         if (lun->l_ctl_lun >= 0) {
 677                 req.reqdata.create.req_lun_id = lun->l_ctl_lun;
 678                 req.reqdata.create.flags |= CTL_LUN_FLAG_ID_REQ;
 679         }
 680
 681         req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE;
 682         req.reqdata.create.device_type = lun->l_device_type;
 683
 684         if (lun->l_serial != NULL) {
 685                 strncpy(req.reqdata.create.serial_num, lun->l_serial,
 686                         sizeof(req.reqdata.create.serial_num));
 687                 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM;
 688         }
 689
 690         if (lun->l_device_id != NULL) {
 691                 strncpy(req.reqdata.create.device_id, lun->l_device_id,
 692                         sizeof(req.reqdata.create.device_id));
 693                 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID;
 694         }
 695
 696         if (lun->l_path != NULL) {
 697                 o = option_find(&lun->l_options, "file");
 698                 if (o != NULL) {
 699                         option_set(o, lun->l_path);
 700                 } else {
 701                         o = option_new(&lun->l_options, "file", lun->l_path);
 702                         assert(o != NULL);
 703                 }
 704         }
 705
 706         o = option_find(&lun->l_options, "ctld_name");
 707         if (o != NULL) {
 708                 option_set(o, lun->l_name);
 709         } else {
 710                 o = option_new(&lun->l_options, "ctld_name", lun->l_name);
 711                 assert(o != NULL);
 712         }
 713
 714         o = option_find(&lun->l_options, "scsiname");
 715         if (o == NULL && lun->l_scsiname != NULL) {
 716                 o = option_new(&lun->l_options, "scsiname", lun->l_scsiname);
 717                 assert(o != NULL);
 718         }
 719
 720         if (!TAILQ_EMPTY(&lun->l_options)) {
 721                 req.args_nvl = nvlist_create(0);
 722                 if (req.args_nvl == NULL) {
 723                         log_warn("error allocating nvlist");
 724                         return (1);
 725                 }
 726
 727                 TAILQ_FOREACH(o, &lun->l_options, o_next)
 728                         nvlist_add_string(req.args_nvl, o->o_name, o->o_value);
 729
 730                 req.args = nvlist_pack(req.args_nvl, &req.args_len);
 731                 if (req.args == NULL) {
 732                         log_warn("error packing nvlist");
 733                         return (1);
 734                 }
 735         }
 736
 737         error = ioctl(ctl_fd, CTL_LUN_REQ, &req);
 738         nvlist_destroy(req.args_nvl);
 739
 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
 764 int
 765 kernel_lun_modify(struct lun *lun)
 766 {
 767         struct option *o;
 768         struct ctl_lun_req req;
 769         int error;
 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         if (lun->l_path != NULL) {
 780                 o = option_find(&lun->l_options, "file");
 781                 if (o != NULL) {
 782                         option_set(o, lun->l_path);
 783                 } else {
 784                         o = option_new(&lun->l_options, "file", lun->l_path);
 785                         assert(o != NULL);
 786                 }
 787         }
 788
 789         o = option_find(&lun->l_options, "ctld_name");
 790         if (o != NULL) {
 791                 option_set(o, lun->l_name);
 792         } else {
 793                 o = option_new(&lun->l_options, "ctld_name", lun->l_name);
 794                 assert(o != NULL);
 795         }
 796
 797         o = option_find(&lun->l_options, "scsiname");
 798         if (o == NULL && lun->l_scsiname != NULL) {
 799                 o = option_new(&lun->l_options, "scsiname", lun->l_scsiname);
 800                 assert(o != NULL);
 801         }
 802
 803         if (!TAILQ_EMPTY(&lun->l_options)) {
 804                 req.args_nvl = nvlist_create(0);
 805                 if (req.args_nvl == NULL) {
 806                         log_warn("error allocating nvlist");
 807                         return (1);
 808                 }
 809
 810                 TAILQ_FOREACH(o, &lun->l_options, o_next)
 811                         nvlist_add_string(req.args_nvl, o->o_name, o->o_value);
 812
 813                 req.args = nvlist_pack(req.args_nvl, &req.args_len);
 814                 if (req.args == NULL) {
 815                         log_warn("error packing nvlist");
 816                         return (1);
 817                 }
 818         }
 819
 820         error = ioctl(ctl_fd, CTL_LUN_REQ, &req);
 821         nvlist_destroy(req.args_nvl);
 822
 823         if (error != 0) {
 824                 log_warn("error issuing CTL_LUN_REQ ioctl");
 825                 return (1);
 826         }
 827
 828         switch (req.status) {
 829         case CTL_LUN_ERROR:
 830                 log_warnx("LUN modification error: %s", req.error_str);
 831                 return (1);
 832         case CTL_LUN_WARNING:
 833                 log_warnx("LUN modification warning: %s", req.error_str);
 834                 break;
 835         case CTL_LUN_OK:
 836                 break;
 837         default:
 838                 log_warnx("unknown LUN modification status: %d",
 839                     req.status);
 840                 return (1);
 841         }
 842
 843         return (0);
 844 }
 845
 846 int
 847 kernel_lun_remove(struct lun *lun)
 848 {
 849         struct ctl_lun_req req;
 850
 851         bzero(&req, sizeof(req));
 852
 853         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 854         req.reqtype = CTL_LUNREQ_RM;
 855
 856         req.reqdata.rm.lun_id = lun->l_ctl_lun;
 857
 858         if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) {
 859                 log_warn("error issuing CTL_LUN_REQ ioctl");
 860                 return (1);
 861         }
 862
 863         switch (req.status) {
 864         case CTL_LUN_ERROR:
 865                 log_warnx("LUN removal error: %s", req.error_str);
 866                 return (1);
 867         case CTL_LUN_WARNING:
 868                 log_warnx("LUN removal warning: %s", req.error_str);
 869                 break;
 870         case CTL_LUN_OK:
 871                 break;
 872         default:
 873                 log_warnx("unknown LUN removal status: %d", req.status);
 874                 return (1);
 875         }
 876
 877         return (0);
 878 }
 879
 880 void
 881 kernel_handoff(struct connection *conn)
 882 {
 883         struct ctl_iscsi req;
 884
 885         bzero(&req, sizeof(req));
 886
 887         req.type = CTL_ISCSI_HANDOFF;
 888         strlcpy(req.data.handoff.initiator_name,
 889             conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name));
 890         strlcpy(req.data.handoff.initiator_addr,
 891             conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr));
 892         if (conn->conn_initiator_alias != NULL) {
 893                 strlcpy(req.data.handoff.initiator_alias,
 894                     conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias));
 895         }
 896         memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid,
 897             sizeof(req.data.handoff.initiator_isid));
 898         strlcpy(req.data.handoff.target_name,
 899             conn->conn_target->t_name, sizeof(req.data.handoff.target_name));
 900         if (conn->conn_portal->p_portal_group->pg_offload != NULL) {
 901                 strlcpy(req.data.handoff.offload,
 902                     conn->conn_portal->p_portal_group->pg_offload,
 903                     sizeof(req.data.handoff.offload));
 904         }
 905 #ifdef ICL_KERNEL_PROXY
 906         if (proxy_mode)
 907                 req.data.handoff.connection_id = conn->conn_socket;
 908         else
 909                 req.data.handoff.socket = conn->conn_socket;
 910 #else
 911         req.data.handoff.socket = conn->conn_socket;
 912 #endif
 913         req.data.handoff.portal_group_tag =
 914             conn->conn_portal->p_portal_group->pg_tag;
 915         if (conn->conn_header_digest == CONN_DIGEST_CRC32C)
 916                 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C;
 917         if (conn->conn_data_digest == CONN_DIGEST_CRC32C)
 918                 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C;
 919         req.data.handoff.cmdsn = conn->conn_cmdsn;
 920         req.data.handoff.statsn = conn->conn_statsn;
 921         req.data.handoff.max_recv_data_segment_length =
 922             conn->conn_max_recv_data_segment_length;
 923         req.data.handoff.max_send_data_segment_length =
 924             conn->conn_max_send_data_segment_length;
 925         req.data.handoff.max_burst_length = conn->conn_max_burst_length;
 926         req.data.handoff.first_burst_length = conn->conn_first_burst_length;
 927         req.data.handoff.immediate_data = conn->conn_immediate_data;
 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 handoff request: "
 936                     "%s; dropping connection", req.error_str);
 937         }
 938 }
 939
 940 void
 941 kernel_limits(const char *offload, int *max_recv_dsl, int *max_send_dsl,
 942     int *max_burst_length, int *first_burst_length)
 943 {
 944         struct ctl_iscsi req;
 945         struct ctl_iscsi_limits_params *cilp;
 946
 947         bzero(&req, sizeof(req));
 948
 949         req.type = CTL_ISCSI_LIMITS;
 950         cilp = (struct ctl_iscsi_limits_params *)&(req.data.limits);
 951         if (offload != NULL) {
 952                 strlcpy(cilp->offload, offload, sizeof(cilp->offload));
 953         }
 954
 955         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
 956                 log_err(1, "error issuing CTL_ISCSI ioctl; "
 957                     "dropping connection");
 958         }
 959
 960         if (req.status != CTL_ISCSI_OK) {
 961                 log_errx(1, "error returned from CTL iSCSI limits request: "
 962                     "%s; dropping connection", req.error_str);
 963         }
 964
 965         if (cilp->max_recv_data_segment_length != 0) {
 966                 *max_recv_dsl = cilp->max_recv_data_segment_length;
 967                 *max_send_dsl = cilp->max_recv_data_segment_length;
 968         }
 969         if (cilp->max_send_data_segment_length != 0)
 970                 *max_send_dsl = cilp->max_send_data_segment_length;
 971         if (cilp->max_burst_length != 0)
 972                 *max_burst_length = cilp->max_burst_length;
 973         if (cilp->first_burst_length != 0)
 974                 *first_burst_length = cilp->first_burst_length;
 975         if (*max_burst_length < *first_burst_length)
 976                 *first_burst_length = *max_burst_length;
 977
 978         if (offload != NULL) {
 979                 log_debugx("Kernel limits for offload \"%s\" are "
 980                     "MaxRecvDataSegment=%d, max_send_dsl=%d, "
 981                     "MaxBurstLength=%d, FirstBurstLength=%d",
 982                     offload, *max_recv_dsl, *max_send_dsl, *max_burst_length,
 983                     *first_burst_length);
 984         } else {
 985                 log_debugx("Kernel limits are "
 986                     "MaxRecvDataSegment=%d, max_send_dsl=%d, "
 987                     "MaxBurstLength=%d, FirstBurstLength=%d",
 988                     *max_recv_dsl, *max_send_dsl, *max_burst_length,
 989                     *first_burst_length);
 990         }
 991 }
 992
 993 int
 994 kernel_port_add(struct port *port)
 995 {
 996         struct option *o;
 997         struct ctl_port_entry entry;
 998         struct ctl_req req;
 999         struct ctl_lun_map lm;
1000         struct target *targ = port->p_target;
1001         struct portal_group *pg = port->p_portal_group;
1002         char result_buf[NVLIST_BUFSIZE];
1003         int error, i;
1004
1005         /* Create iSCSI port. */
1006         if (port->p_portal_group || port->p_ioctl_port) {
1007                 bzero(&req, sizeof(req));
1008                 req.reqtype = CTL_REQ_CREATE;
1009
1010                 if (port->p_portal_group) {
1011                         strlcpy(req.driver, "iscsi", sizeof(req.driver));
1012                         req.args_nvl = nvlist_create(0);
1013                         nvlist_add_string(req.args_nvl, "cfiscsi_target",
1014                             targ->t_name);
1015                         nvlist_add_string(req.args_nvl,
1016                             "ctld_portal_group_name", pg->pg_name);
1017                         nvlist_add_stringf(req.args_nvl,
1018                             "cfiscsi_portal_group_tag", "%u", pg->pg_tag);
1019
1020                         if (targ->t_alias) {
1021                                 nvlist_add_string(req.args_nvl,
1022                                     "cfiscsi_target_alias", targ->t_alias);
1023                         }
1024
1025                         TAILQ_FOREACH(o, &pg->pg_options, o_next)
1026                                 nvlist_add_string(req.args_nvl, o->o_name,
1027                                     o->o_value);
1028                 }
1029
1030                 if (port->p_ioctl_port) {
1031                         strlcpy(req.driver, "ioctl", sizeof(req.driver));
1032                         req.args_nvl = nvlist_create(0);
1033                         nvlist_add_stringf(req.args_nvl, "pp", "%d",
1034                             port->p_ioctl_pp);
1035                         nvlist_add_stringf(req.args_nvl, "vp", "%d",
1036                             port->p_ioctl_vp);
1037                 }
1038
1039                 req.args = nvlist_pack(req.args_nvl, &req.args_len);
1040                 if (req.args == NULL) {
1041                         log_warn("error packing nvlist");
1042                         return (1);
1043                 }
1044
1045                 req.result = result_buf;
1046                 req.result_len = sizeof(result_buf);
1047                 error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
1048                 nvlist_destroy(req.args_nvl);
1049
1050                 if (error != 0) {
1051                         log_warn("error issuing CTL_PORT_REQ ioctl");
1052                         return (1);
1053                 }
1054                 if (req.status == CTL_LUN_ERROR) {
1055                         log_warnx("error returned from port creation request: %s",
1056                             req.error_str);
1057                         return (1);
1058                 }
1059                 if (req.status != CTL_LUN_OK) {
1060                         log_warnx("unknown port creation request status %d",
1061                             req.status);
1062                         return (1);
1063                 }
1064
1065                 req.result_nvl = nvlist_unpack(result_buf, req.result_len, 0);
1066                 if (req.result_nvl == NULL) {
1067                         log_warnx("error unpacking result nvlist");
1068                         return (1);
1069                 }
1070
1071                 port->p_ctl_port = nvlist_get_number(req.result_nvl, "port_id");
1072                 nvlist_destroy(req.result_nvl);
1073         } else if (port->p_pport) {
1074                 port->p_ctl_port = port->p_pport->pp_ctl_port;
1075
1076                 if (strncmp(targ->t_name, "naa.", 4) == 0 &&
1077                     strlen(targ->t_name) == 20) {
1078                         bzero(&entry, sizeof(entry));
1079                         entry.port_type = CTL_PORT_NONE;
1080                         entry.targ_port = port->p_ctl_port;
1081                         entry.flags |= CTL_PORT_WWNN_VALID;
1082                         entry.wwnn = strtoull(targ->t_name + 4, NULL, 16);
1083                         if (ioctl(ctl_fd, CTL_SET_PORT_WWNS, &entry) == -1)
1084                                 log_warn("CTL_SET_PORT_WWNS ioctl failed");
1085                 }
1086         }
1087
1088         /* Explicitly enable mapping to block any access except allowed. */
1089         lm.port = port->p_ctl_port;
1090         lm.plun = UINT32_MAX;
1091         lm.lun = 0;
1092         error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1093         if (error != 0)
1094                 log_warn("CTL_LUN_MAP ioctl failed");
1095
1096         /* Map configured LUNs */
1097         for (i = 0; i < MAX_LUNS; i++) {
1098                 if (targ->t_luns[i] == NULL)
1099                         continue;
1100                 lm.port = port->p_ctl_port;
1101                 lm.plun = i;
1102                 lm.lun = targ->t_luns[i]->l_ctl_lun;
1103                 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1104                 if (error != 0)
1105                         log_warn("CTL_LUN_MAP ioctl failed");
1106         }
1107
1108         /* Enable port */
1109         bzero(&entry, sizeof(entry));
1110         entry.targ_port = port->p_ctl_port;
1111         error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry);
1112         if (error != 0) {
1113                 log_warn("CTL_ENABLE_PORT ioctl failed");
1114                 return (-1);
1115         }
1116
1117         return (0);
1118 }
1119
1120 int
1121 kernel_port_update(struct port *port, struct port *oport)
1122 {
1123         struct ctl_lun_map lm;
1124         struct target *targ = port->p_target;
1125         struct target *otarg = oport->p_target;
1126         int error, i;
1127         uint32_t olun;
1128
1129         /* Map configured LUNs and unmap others */
1130         for (i = 0; i < MAX_LUNS; i++) {
1131                 lm.port = port->p_ctl_port;
1132                 lm.plun = i;
1133                 if (targ->t_luns[i] == NULL)
1134                         lm.lun = UINT32_MAX;
1135                 else
1136                         lm.lun = targ->t_luns[i]->l_ctl_lun;
1137                 if (otarg->t_luns[i] == NULL)
1138                         olun = UINT32_MAX;
1139                 else
1140                         olun = otarg->t_luns[i]->l_ctl_lun;
1141                 if (lm.lun == olun)
1142                         continue;
1143                 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1144                 if (error != 0)
1145                         log_warn("CTL_LUN_MAP ioctl failed");
1146         }
1147         return (0);
1148 }
1149
1150 int
1151 kernel_port_remove(struct port *port)
1152 {
1153         struct ctl_port_entry entry;
1154         struct ctl_lun_map lm;
1155         struct ctl_req req;
1156         struct target *targ = port->p_target;
1157         struct portal_group *pg = port->p_portal_group;
1158         int error;
1159
1160         /* Disable port */
1161         bzero(&entry, sizeof(entry));
1162         entry.targ_port = port->p_ctl_port;
1163         error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry);
1164         if (error != 0) {
1165                 log_warn("CTL_DISABLE_PORT ioctl failed");
1166                 return (-1);
1167         }
1168
1169         /* Remove iSCSI or ioctl port. */
1170         if (port->p_portal_group || port->p_ioctl_port) {
1171                 bzero(&req, sizeof(req));
1172                 strlcpy(req.driver, port->p_ioctl_port ? "ioctl" : "iscsi",
1173                     sizeof(req.driver));
1174                 req.reqtype = CTL_REQ_REMOVE;
1175                 req.args_nvl = nvlist_create(0);
1176                 if (req.args_nvl == NULL)
1177                         log_err(1, "nvlist_create");
1178
1179                 if (port->p_ioctl_port)
1180                         nvlist_add_stringf(req.args_nvl, "port_id", "%d",
1181                             port->p_ctl_port);
1182                 else {
1183                         nvlist_add_string(req.args_nvl, "cfiscsi_target",
1184                             targ->t_name);
1185                         nvlist_add_stringf(req.args_nvl,
1186                             "cfiscsi_portal_group_tag", "%u", pg->pg_tag);
1187                 }
1188
1189                 req.args = nvlist_pack(req.args_nvl, &req.args_len);
1190                 if (req.args == NULL) {
1191                         log_warn("error packing nvlist");
1192                         return (1);
1193                 }
1194
1195                 error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
1196                 nvlist_destroy(req.args_nvl);
1197
1198                 if (error != 0) {
1199                         log_warn("error issuing CTL_PORT_REQ ioctl");
1200                         return (1);
1201                 }
1202                 if (req.status == CTL_LUN_ERROR) {
1203                         log_warnx("error returned from port removal request: %s",
1204                             req.error_str);
1205                         return (1);
1206                 }
1207                 if (req.status != CTL_LUN_OK) {
1208                         log_warnx("unknown port removal request status %d",
1209                             req.status);
1210                         return (1);
1211                 }
1212         } else {
1213                 /* Disable LUN mapping. */
1214                 lm.port = port->p_ctl_port;
1215                 lm.plun = UINT32_MAX;
1216                 lm.lun = UINT32_MAX;
1217                 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1218                 if (error != 0)
1219                         log_warn("CTL_LUN_MAP ioctl failed");
1220         }
1221         return (0);
1222 }
1223
1224 #ifdef ICL_KERNEL_PROXY
1225 void
1226 kernel_listen(struct addrinfo *ai, bool iser, int portal_id)
1227 {
1228         struct ctl_iscsi req;
1229
1230         bzero(&req, sizeof(req));
1231
1232         req.type = CTL_ISCSI_LISTEN;
1233         req.data.listen.iser = iser;
1234         req.data.listen.domain = ai->ai_family;
1235         req.data.listen.socktype = ai->ai_socktype;
1236         req.data.listen.protocol = ai->ai_protocol;
1237         req.data.listen.addr = ai->ai_addr;
1238         req.data.listen.addrlen = ai->ai_addrlen;
1239         req.data.listen.portal_id = portal_id;
1240
1241         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
1242                 log_err(1, "error issuing CTL_ISCSI ioctl");
1243
1244         if (req.status != CTL_ISCSI_OK) {
1245                 log_errx(1, "error returned from CTL iSCSI listen: %s",
1246                     req.error_str);
1247         }
1248 }
1249
1250 void
1251 kernel_accept(int *connection_id, int *portal_id,
1252     struct sockaddr *client_sa, socklen_t *client_salen)
1253 {
1254         struct ctl_iscsi req;
1255         struct sockaddr_storage ss;
1256
1257         bzero(&req, sizeof(req));
1258
1259         req.type = CTL_ISCSI_ACCEPT;
1260         req.data.accept.initiator_addr = (struct sockaddr *)&ss;
1261
1262         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
1263                 log_err(1, "error issuing CTL_ISCSI ioctl");
1264
1265         if (req.status != CTL_ISCSI_OK) {
1266                 log_errx(1, "error returned from CTL iSCSI accept: %s",
1267                     req.error_str);
1268         }
1269
1270         *connection_id = req.data.accept.connection_id;
1271         *portal_id = req.data.accept.portal_id;
1272         *client_salen = req.data.accept.initiator_addrlen;
1273         memcpy(client_sa, &ss, *client_salen);
1274 }
1275
1276 void
1277 kernel_send(struct pdu *pdu)
1278 {
1279         struct ctl_iscsi req;
1280
1281         bzero(&req, sizeof(req));
1282
1283         req.type = CTL_ISCSI_SEND;
1284         req.data.send.connection_id = pdu->pdu_connection->conn_socket;
1285         req.data.send.bhs = pdu->pdu_bhs;
1286         req.data.send.data_segment_len = pdu->pdu_data_len;
1287         req.data.send.data_segment = pdu->pdu_data;
1288
1289         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1290                 log_err(1, "error issuing CTL_ISCSI ioctl; "
1291                     "dropping connection");
1292         }
1293
1294         if (req.status != CTL_ISCSI_OK) {
1295                 log_errx(1, "error returned from CTL iSCSI send: "
1296                     "%s; dropping connection", req.error_str);
1297         }
1298 }
1299
1300 void
1301 kernel_receive(struct pdu *pdu)
1302 {
1303         struct connection *conn;
1304         struct ctl_iscsi req;
1305
1306         conn = pdu->pdu_connection;
1307         pdu->pdu_data = malloc(conn->conn_max_recv_data_segment_length);
1308         if (pdu->pdu_data == NULL)
1309                 log_err(1, "malloc");
1310
1311         bzero(&req, sizeof(req));
1312
1313         req.type = CTL_ISCSI_RECEIVE;
1314         req.data.receive.connection_id = conn->conn_socket;
1315         req.data.receive.bhs = pdu->pdu_bhs;
1316         req.data.receive.data_segment_len =
1317             conn->conn_max_recv_data_segment_length;
1318         req.data.receive.data_segment = pdu->pdu_data;
1319
1320         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1321                 log_err(1, "error issuing CTL_ISCSI ioctl; "
1322                     "dropping connection");
1323         }
1324
1325         if (req.status != CTL_ISCSI_OK) {
1326                 log_errx(1, "error returned from CTL iSCSI receive: "
1327                     "%s; dropping connection", req.error_str);
1328         }
1329
1330 }
1331
1332 #endif /* ICL_KERNEL_PROXY */
1333
1334 /*
1335  * XXX: I CANT INTO LATIN
1336  */
1337 void
1338 kernel_capsicate(void)
1339 {
1340         int error;
1341         cap_rights_t rights;
1342         const unsigned long cmds[] = { CTL_ISCSI };
1343
1344         cap_rights_init(&rights, CAP_IOCTL);
1345         error = cap_rights_limit(ctl_fd, &rights);
1346         if (error != 0 && errno != ENOSYS)
1347                 log_err(1, "cap_rights_limit");
1348
1349         error = cap_ioctls_limit(ctl_fd, cmds, nitems(cmds));
1350
1351         if (error != 0 && errno != ENOSYS)
1352                 log_err(1, "cap_ioctls_limit");
1353
1354         error = cap_enter();
1355         if (error != 0 && errno != ENOSYS)
1356                 log_err(1, "cap_enter");
1357
1358         if (cap_sandboxed())
1359                 log_debugx("Capsicum capability mode enabled");
1360         else
1361                 log_warnx("Capsicum capability mode not supported");
1362 }
1363