usr.sbin/ctld/kernel.c

   1 /*-
   2  * Copyright (c) 2003, 2004 Silicon Graphics International Corp.
   3  * Copyright (c) 1997-2007 Kenneth D. Merry
   4  * Copyright (c) 2012 The FreeBSD Foundation
   5  * All rights reserved.
   6  *
   7  * Portions of this software were developed by Edward Tomasz Napierala
   8  * under sponsorship from the FreeBSD Foundation.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions, and the following disclaimer,
  15  *    without modification.
  16  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  17  *    substantially similar to the "NO WARRANTY" disclaimer below
  18  *    ("Disclaimer") and any redistribution must be conditioned upon
  19  *    including a substantially similar Disclaimer requirement for further
  20  *    binary redistribution.
  21  *
  22  * NO WARRANTY
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  24  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  25  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  26  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  27  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  31  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  32  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGES.
  34  *
  35  */
  36
  37 #include <sys/cdefs.h>
  38 __FBSDID("$FreeBSD$");
  39
  40 #include <sys/param.h>
  41 #include <sys/capsicum.h>
  42 #include <sys/callout.h>
  43 #include <sys/ioctl.h>
  44 #include <sys/linker.h>
  45 #include <sys/module.h>
  46 #include <sys/queue.h>
  47 #include <sys/sbuf.h>
  48 #include <sys/stat.h>
  49 #include <assert.h>
  50 #include <bsdxml.h>
  51 #include <ctype.h>
  52 #include <errno.h>
  53 #include <fcntl.h>
  54 #include <stdint.h>
  55 #include <stdio.h>
  56 #include <stdlib.h>
  57 #include <string.h>
  58 #include <strings.h>
  59 #include <cam/scsi/scsi_all.h>
  60 #include <cam/scsi/scsi_message.h>
  61 #include <cam/ctl/ctl.h>
  62 #include <cam/ctl/ctl_io.h>
  63 #include <cam/ctl/ctl_backend.h>
  64 #include <cam/ctl/ctl_ioctl.h>
  65 #include <cam/ctl/ctl_util.h>
  66 #include <cam/ctl/ctl_scsi_all.h>
  67
  68 #include "ctld.h"
  69
  70 #ifdef ICL_KERNEL_PROXY
  71 #include <netdb.h>
  72 #endif
  73
  74 extern bool proxy_mode;
  75
  76 static int      ctl_fd = 0;
  77
  78 void
  79 kernel_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 #ifdef  WANT_ISCSI
  95         else {
  96                 saved_errno = errno;
  97                 if (modfind("cfiscsi") == -1 && kldload("cfiscsi") == -1)
  98                         log_warn("couldn't load cfiscsi");
  99                 errno = saved_errno;
 100         }
 101 #endif
 102 }
 103
 104 /*
 105  * Name/value pair used for per-LUN attributes.
 106  */
 107 struct cctl_lun_nv {
 108         char *name;
 109         char *value;
 110         STAILQ_ENTRY(cctl_lun_nv) links;
 111 };
 112
 113 /*
 114  * Backend LUN information.
 115  */
 116 struct cctl_lun {
 117         uint64_t lun_id;
 118         char *backend_type;
 119         uint8_t device_type;
 120         uint64_t size_blocks;
 121         uint32_t blocksize;
 122         char *serial_number;
 123         char *device_id;
 124         char *ctld_name;
 125         STAILQ_HEAD(,cctl_lun_nv) attr_list;
 126         STAILQ_ENTRY(cctl_lun) links;
 127 };
 128
 129 struct cctl_port {
 130         uint32_t port_id;
 131         char *port_frontend;
 132         char *port_name;
 133         int pp;
 134         int vp;
 135         int cfiscsi_state;
 136         char *cfiscsi_target;
 137         uint16_t cfiscsi_portal_group_tag;
 138         char *ctld_portal_group_name;
 139         STAILQ_HEAD(,cctl_lun_nv) attr_list;
 140         STAILQ_ENTRY(cctl_port) links;
 141 };
 142
 143 struct cctl_devlist_data {
 144         int num_luns;
 145         STAILQ_HEAD(,cctl_lun) lun_list;
 146         struct cctl_lun *cur_lun;
 147         int num_ports;
 148         STAILQ_HEAD(,cctl_port) port_list;
 149         struct cctl_port *cur_port;
 150         int level;
 151         struct sbuf *cur_sb[32];
 152 };
 153
 154 static void
 155 cctl_start_element(void *user_data, const char *name, const char **attr)
 156 {
 157         int i;
 158         struct cctl_devlist_data *devlist;
 159         struct cctl_lun *cur_lun;
 160
 161         devlist = (struct cctl_devlist_data *)user_data;
 162         cur_lun = devlist->cur_lun;
 163         devlist->level++;
 164         if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
 165             sizeof(devlist->cur_sb[0])))
 166                 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
 167                      sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
 168
 169         devlist->cur_sb[devlist->level] = sbuf_new_auto();
 170         if (devlist->cur_sb[devlist->level] == NULL)
 171                 log_err(1, "%s: unable to allocate sbuf", __func__);
 172
 173         if (strcmp(name, "lun") == 0) {
 174                 if (cur_lun != NULL)
 175                         log_errx(1, "%s: improper lun element nesting",
 176                             __func__);
 177
 178                 cur_lun = calloc(1, sizeof(*cur_lun));
 179                 if (cur_lun == NULL)
 180                         log_err(1, "%s: cannot allocate %zd bytes", __func__,
 181                             sizeof(*cur_lun));
 182
 183                 devlist->num_luns++;
 184                 devlist->cur_lun = cur_lun;
 185
 186                 STAILQ_INIT(&cur_lun->attr_list);
 187                 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links);
 188
 189                 for (i = 0; attr[i] != NULL; i += 2) {
 190                         if (strcmp(attr[i], "id") == 0) {
 191                                 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0);
 192                         } else {
 193                                 log_errx(1, "%s: invalid LUN attribute %s = %s",
 194                                      __func__, attr[i], attr[i+1]);
 195                         }
 196                 }
 197         }
 198 }
 199
 200 static void
 201 cctl_end_element(void *user_data, const char *name)
 202 {
 203         struct cctl_devlist_data *devlist;
 204         struct cctl_lun *cur_lun;
 205         char *str;
 206
 207         devlist = (struct cctl_devlist_data *)user_data;
 208         cur_lun = devlist->cur_lun;
 209
 210         if ((cur_lun == NULL)
 211          && (strcmp(name, "ctllunlist") != 0))
 212                 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name);
 213
 214         if (devlist->cur_sb[devlist->level] == NULL)
 215                 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
 216                      devlist->level, name);
 217
 218         sbuf_finish(devlist->cur_sb[devlist->level]);
 219         str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
 220
 221         if (strlen(str) == 0) {
 222                 free(str);
 223                 str = NULL;
 224         }
 225
 226         sbuf_delete(devlist->cur_sb[devlist->level]);
 227         devlist->cur_sb[devlist->level] = NULL;
 228         devlist->level--;
 229
 230         if (strcmp(name, "backend_type") == 0) {
 231                 cur_lun->backend_type = str;
 232                 str = NULL;
 233         } else if (strcmp(name, "lun_type") == 0) {
 234                 cur_lun->device_type = strtoull(str, NULL, 0);
 235         } else if (strcmp(name, "size") == 0) {
 236                 cur_lun->size_blocks = strtoull(str, NULL, 0);
 237         } else if (strcmp(name, "blocksize") == 0) {
 238                 cur_lun->blocksize = strtoul(str, NULL, 0);
 239         } else if (strcmp(name, "serial_number") == 0) {
 240                 cur_lun->serial_number = str;
 241                 str = NULL;
 242         } else if (strcmp(name, "device_id") == 0) {
 243                 cur_lun->device_id = str;
 244                 str = NULL;
 245         } else if (strcmp(name, "ctld_name") == 0) {
 246                 cur_lun->ctld_name = str;
 247                 str = NULL;
 248         } else if (strcmp(name, "lun") == 0) {
 249                 devlist->cur_lun = NULL;
 250         } else if (strcmp(name, "ctllunlist") == 0) {
 251                 /* Nothing. */
 252         } else {
 253                 struct cctl_lun_nv *nv;
 254
 255                 nv = calloc(1, sizeof(*nv));
 256                 if (nv == NULL)
 257                         log_err(1, "%s: can't allocate %zd bytes for nv pair",
 258                             __func__, sizeof(*nv));
 259
 260                 nv->name = checked_strdup(name);
 261
 262                 nv->value = str;
 263                 str = NULL;
 264                 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links);
 265         }
 266
 267         free(str);
 268 }
 269
 270 static void
 271 cctl_start_pelement(void *user_data, const char *name, const char **attr)
 272 {
 273         int i;
 274         struct cctl_devlist_data *devlist;
 275         struct cctl_port *cur_port;
 276
 277         devlist = (struct cctl_devlist_data *)user_data;
 278         cur_port = devlist->cur_port;
 279         devlist->level++;
 280         if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
 281             sizeof(devlist->cur_sb[0])))
 282                 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
 283                      sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
 284
 285         devlist->cur_sb[devlist->level] = sbuf_new_auto();
 286         if (devlist->cur_sb[devlist->level] == NULL)
 287                 log_err(1, "%s: unable to allocate sbuf", __func__);
 288
 289         if (strcmp(name, "targ_port") == 0) {
 290                 if (cur_port != NULL)
 291                         log_errx(1, "%s: improper port element nesting (%s)",
 292                             __func__, name);
 293
 294                 cur_port = calloc(1, sizeof(*cur_port));
 295                 if (cur_port == NULL)
 296                         log_err(1, "%s: cannot allocate %zd bytes", __func__,
 297                             sizeof(*cur_port));
 298
 299                 devlist->num_ports++;
 300                 devlist->cur_port = cur_port;
 301
 302                 STAILQ_INIT(&cur_port->attr_list);
 303                 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links);
 304
 305                 for (i = 0; attr[i] != NULL; i += 2) {
 306                         if (strcmp(attr[i], "id") == 0) {
 307                                 cur_port->port_id = strtoul(attr[i+1], NULL, 0);
 308                         } else {
 309                                 log_errx(1, "%s: invalid LUN attribute %s = %s",
 310                                      __func__, attr[i], attr[i+1]);
 311                         }
 312                 }
 313         }
 314 }
 315
 316 static void
 317 cctl_end_pelement(void *user_data, const char *name)
 318 {
 319         struct cctl_devlist_data *devlist;
 320         struct cctl_port *cur_port;
 321         char *str;
 322
 323         devlist = (struct cctl_devlist_data *)user_data;
 324         cur_port = devlist->cur_port;
 325
 326         if ((cur_port == NULL)
 327          && (strcmp(name, "ctlportlist") != 0))
 328                 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name);
 329
 330         if (devlist->cur_sb[devlist->level] == NULL)
 331                 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
 332                      devlist->level, name);
 333
 334         sbuf_finish(devlist->cur_sb[devlist->level]);
 335         str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
 336
 337         if (strlen(str) == 0) {
 338                 free(str);
 339                 str = NULL;
 340         }
 341
 342         sbuf_delete(devlist->cur_sb[devlist->level]);
 343         devlist->cur_sb[devlist->level] = NULL;
 344         devlist->level--;
 345
 346         if (strcmp(name, "frontend_type") == 0) {
 347                 cur_port->port_frontend = str;
 348                 str = NULL;
 349         } else if (strcmp(name, "port_name") == 0) {
 350                 cur_port->port_name = str;
 351                 str = NULL;
 352         } else if (strcmp(name, "physical_port") == 0) {
 353                 cur_port->pp = strtoul(str, NULL, 0);
 354         } else if (strcmp(name, "virtual_port") == 0) {
 355                 cur_port->vp = strtoul(str, NULL, 0);
 356         } else if (strcmp(name, "cfiscsi_target") == 0) {
 357                 cur_port->cfiscsi_target = str;
 358                 str = NULL;
 359         } else if (strcmp(name, "cfiscsi_state") == 0) {
 360                 cur_port->cfiscsi_state = strtoul(str, NULL, 0);
 361         } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) {
 362                 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0);
 363         } else if (strcmp(name, "ctld_portal_group_name") == 0) {
 364                 cur_port->ctld_portal_group_name = str;
 365                 str = NULL;
 366         } else if (strcmp(name, "targ_port") == 0) {
 367                 devlist->cur_port = NULL;
 368         } else if (strcmp(name, "ctlportlist") == 0) {
 369                 /* Nothing. */
 370         } else {
 371                 struct cctl_lun_nv *nv;
 372
 373                 nv = calloc(1, sizeof(*nv));
 374                 if (nv == NULL)
 375                         log_err(1, "%s: can't allocate %zd bytes for nv pair",
 376                             __func__, sizeof(*nv));
 377
 378                 nv->name = checked_strdup(name);
 379
 380                 nv->value = str;
 381                 str = NULL;
 382                 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links);
 383         }
 384
 385         free(str);
 386 }
 387
 388 static void
 389 cctl_char_handler(void *user_data, const XML_Char *str, int len)
 390 {
 391         struct cctl_devlist_data *devlist;
 392
 393         devlist = (struct cctl_devlist_data *)user_data;
 394
 395         sbuf_bcat(devlist->cur_sb[devlist->level], str, len);
 396 }
 397
 398 struct conf *
 399 conf_new_from_kernel(void)
 400 {
 401         struct conf *conf = NULL;
 402         struct target *targ;
 403         struct portal_group *pg;
 404         struct pport *pp;
 405         struct port *cp;
 406         struct lun *cl;
 407         struct option *o;
 408         struct ctl_lun_list list;
 409         struct cctl_devlist_data devlist;
 410         struct cctl_lun *lun;
 411         struct cctl_port *port;
 412         XML_Parser parser;
 413         char *str, *name;
 414         int len, retval;
 415
 416         bzero(&devlist, sizeof(devlist));
 417         STAILQ_INIT(&devlist.lun_list);
 418         STAILQ_INIT(&devlist.port_list);
 419
 420         log_debugx("obtaining previously configured CTL luns from the kernel");
 421
 422         str = NULL;
 423         len = 4096;
 424 retry:
 425         str = realloc(str, len);
 426         if (str == NULL)
 427                 log_err(1, "realloc");
 428
 429         bzero(&list, sizeof(list));
 430         list.alloc_len = len;
 431         list.status = CTL_LUN_LIST_NONE;
 432         list.lun_xml = str;
 433
 434         if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) {
 435                 log_warn("error issuing CTL_LUN_LIST ioctl");
 436                 free(str);
 437                 return (NULL);
 438         }
 439
 440         if (list.status == CTL_LUN_LIST_ERROR) {
 441                 log_warnx("error returned from CTL_LUN_LIST ioctl: %s",
 442                     list.error_str);
 443                 free(str);
 444                 return (NULL);
 445         }
 446
 447         if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
 448                 len = len << 1;
 449                 goto retry;
 450         }
 451
 452         parser = XML_ParserCreate(NULL);
 453         if (parser == NULL) {
 454                 log_warnx("unable to create XML parser");
 455                 free(str);
 456                 return (NULL);
 457         }
 458
 459         XML_SetUserData(parser, &devlist);
 460         XML_SetElementHandler(parser, cctl_start_element, cctl_end_element);
 461         XML_SetCharacterDataHandler(parser, cctl_char_handler);
 462
 463         retval = XML_Parse(parser, str, strlen(str), 1);
 464         XML_ParserFree(parser);
 465         free(str);
 466         if (retval != 1) {
 467                 log_warnx("XML_Parse failed");
 468                 return (NULL);
 469         }
 470
 471         str = NULL;
 472         len = 4096;
 473 retry_port:
 474         str = realloc(str, len);
 475         if (str == NULL)
 476                 log_err(1, "realloc");
 477
 478         bzero(&list, sizeof(list));
 479         list.alloc_len = len;
 480         list.status = CTL_LUN_LIST_NONE;
 481         list.lun_xml = str;
 482
 483         if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) {
 484                 log_warn("error issuing CTL_PORT_LIST ioctl");
 485                 free(str);
 486                 return (NULL);
 487         }
 488
 489         if (list.status == CTL_LUN_LIST_ERROR) {
 490                 log_warnx("error returned from CTL_PORT_LIST ioctl: %s",
 491                     list.error_str);
 492                 free(str);
 493                 return (NULL);
 494         }
 495
 496         if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
 497                 len = len << 1;
 498                 goto retry_port;
 499         }
 500
 501         parser = XML_ParserCreate(NULL);
 502         if (parser == NULL) {
 503                 log_warnx("unable to create XML parser");
 504                 free(str);
 505                 return (NULL);
 506         }
 507
 508         XML_SetUserData(parser, &devlist);
 509         XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement);
 510         XML_SetCharacterDataHandler(parser, cctl_char_handler);
 511
 512         retval = XML_Parse(parser, str, strlen(str), 1);
 513         XML_ParserFree(parser);
 514         free(str);
 515         if (retval != 1) {
 516                 log_warnx("XML_Parse failed");
 517                 return (NULL);
 518         }
 519
 520         conf = conf_new();
 521
 522         name = NULL;
 523         STAILQ_FOREACH(port, &devlist.port_list, links) {
 524                 if (strcmp(port->port_frontend, "ha") == 0)
 525                         continue;
 526                 free(name);
 527                 if (port->pp == 0 && port->vp == 0) {
 528                         name = checked_strdup(port->port_name);
 529                 } else if (port->vp == 0) {
 530                         retval = asprintf(&name, "%s/%d",
 531                             port->port_name, port->pp);
 532                         if (retval <= 0)
 533                                 log_err(1, "asprintf");
 534                 } else {
 535                         retval = asprintf(&name, "%s/%d/%d",
 536                             port->port_name, port->pp, port->vp);
 537                         if (retval <= 0)
 538                                 log_err(1, "asprintf");
 539                 }
 540
 541                 if (port->cfiscsi_target == NULL) {
 542                         log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ",
 543                             port->port_id, name);
 544                         pp = pport_find(conf, name);
 545                         if (pp == NULL) {
 546 #if 0
 547                                 log_debugx("found new kernel port %u \"%s\"",
 548                                     port->port_id, name);
 549 #endif
 550                                 pp = pport_new(conf, name, port->port_id);
 551                                 if (pp == NULL) {
 552                                         log_warnx("pport_new failed");
 553                                         continue;
 554                                 }
 555                         }
 556                         continue;
 557                 }
 558                 if (port->cfiscsi_state != 1) {
 559                         log_debugx("CTL port %ju is not active (%d); ignoring",
 560                             (uintmax_t)port->port_id, port->cfiscsi_state);
 561                         continue;
 562                 }
 563
 564                 targ = target_find(conf, port->cfiscsi_target);
 565                 if (targ == NULL) {
 566 #if 0
 567                         log_debugx("found new kernel target %s for CTL port %ld",
 568                             port->cfiscsi_target, port->port_id);
 569 #endif
 570                         targ = target_new(conf, port->cfiscsi_target);
 571                         if (targ == NULL) {
 572                                 log_warnx("target_new failed");
 573                                 continue;
 574                         }
 575                 }
 576
 577                 if (port->ctld_portal_group_name == NULL)
 578                         continue;
 579                 pg = portal_group_find(conf, port->ctld_portal_group_name);
 580                 if (pg == NULL) {
 581 #if 0
 582                         log_debugx("found new kernel portal group %s for CTL port %ld",
 583                             port->ctld_portal_group_name, port->port_id);
 584 #endif
 585                         pg = portal_group_new(conf, port->ctld_portal_group_name);
 586                         if (pg == NULL) {
 587                                 log_warnx("portal_group_new failed");
 588                                 continue;
 589                         }
 590                 }
 591                 pg->pg_tag = port->cfiscsi_portal_group_tag;
 592                 cp = port_new(conf, targ, pg);
 593                 if (cp == NULL) {
 594                         log_warnx("port_new failed");
 595                         continue;
 596                 }
 597                 cp->p_ctl_port = port->port_id;
 598         }
 599         free(name);
 600
 601         STAILQ_FOREACH(lun, &devlist.lun_list, links) {
 602                 struct cctl_lun_nv *nv;
 603
 604                 if (lun->ctld_name == NULL) {
 605                         log_debugx("CTL lun %ju wasn't managed by ctld; "
 606                             "ignoring", (uintmax_t)lun->lun_id);
 607                         continue;
 608                 }
 609
 610                 cl = lun_find(conf, lun->ctld_name);
 611                 if (cl != NULL) {
 612                         log_warnx("found CTL lun %ju \"%s\", "
 613                             "also backed by CTL lun %d; ignoring",
 614                             (uintmax_t)lun->lun_id, lun->ctld_name,
 615                             cl->l_ctl_lun);
 616                         continue;
 617                 }
 618
 619                 log_debugx("found CTL lun %ju \"%s\"",
 620                     (uintmax_t)lun->lun_id, lun->ctld_name);
 621
 622                 cl = lun_new(conf, lun->ctld_name);
 623                 if (cl == NULL) {
 624                         log_warnx("lun_new failed");
 625                         continue;
 626                 }
 627                 lun_set_backend(cl, lun->backend_type);
 628                 lun_set_device_type(cl, lun->device_type);
 629                 lun_set_blocksize(cl, lun->blocksize);
 630                 lun_set_device_id(cl, lun->device_id);
 631                 lun_set_serial(cl, lun->serial_number);
 632                 lun_set_size(cl, lun->size_blocks * cl->l_blocksize);
 633                 lun_set_ctl_lun(cl, lun->lun_id);
 634
 635                 STAILQ_FOREACH(nv, &lun->attr_list, links) {
 636                         if (strcmp(nv->name, "file") == 0 ||
 637                             strcmp(nv->name, "dev") == 0) {
 638                                 lun_set_path(cl, nv->value);
 639                                 continue;
 640                         }
 641                         o = option_new(&cl->l_options, nv->name, nv->value);
 642                         if (o == NULL)
 643                                 log_warnx("unable to add CTL lun option %s "
 644                                     "for CTL lun %ju \"%s\"",
 645                                     nv->name, (uintmax_t) lun->lun_id,
 646                                     cl->l_name);
 647                 }
 648         }
 649
 650         return (conf);
 651 }
 652
 653 static void
 654 str_arg(struct ctl_be_arg *arg, const char *name, const char *value)
 655 {
 656
 657         arg->namelen = strlen(name) + 1;
 658         arg->name = __DECONST(char *, name);
 659         arg->vallen = strlen(value) + 1;
 660         arg->value = __DECONST(char *, value);
 661         arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD;
 662 }
 663
 664 int
 665 kernel_lun_add(struct lun *lun)
 666 {
 667         struct option *o;
 668         struct ctl_lun_req req;
 669         int error, i, num_options;
 670
 671         bzero(&req, sizeof(req));
 672
 673         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 674         req.reqtype = CTL_LUNREQ_CREATE;
 675
 676         req.reqdata.create.blocksize_bytes = lun->l_blocksize;
 677
 678         if (lun->l_size != 0)
 679                 req.reqdata.create.lun_size_bytes = lun->l_size;
 680
 681         if (lun->l_ctl_lun >= 0) {
 682                 req.reqdata.create.req_lun_id = lun->l_ctl_lun;
 683                 req.reqdata.create.flags |= CTL_LUN_FLAG_ID_REQ;
 684         }
 685
 686         req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE;
 687         req.reqdata.create.device_type = lun->l_device_type;
 688
 689         if (lun->l_serial != NULL) {
 690                 strncpy(req.reqdata.create.serial_num, lun->l_serial,
 691                         sizeof(req.reqdata.create.serial_num));
 692                 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM;
 693         }
 694
 695         if (lun->l_device_id != NULL) {
 696                 strncpy(req.reqdata.create.device_id, lun->l_device_id,
 697                         sizeof(req.reqdata.create.device_id));
 698                 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID;
 699         }
 700
 701         if (lun->l_path != NULL) {
 702                 o = option_find(&lun->l_options, "file");
 703                 if (o != NULL) {
 704                         option_set(o, lun->l_path);
 705                 } else {
 706                         o = option_new(&lun->l_options, "file", lun->l_path);
 707                         assert(o != NULL);
 708                 }
 709         }
 710
 711         o = option_find(&lun->l_options, "ctld_name");
 712         if (o != NULL) {
 713                 option_set(o, lun->l_name);
 714         } else {
 715                 o = option_new(&lun->l_options, "ctld_name", lun->l_name);
 716                 assert(o != NULL);
 717         }
 718
 719         o = option_find(&lun->l_options, "scsiname");
 720         if (o == NULL && lun->l_scsiname != NULL) {
 721                 o = option_new(&lun->l_options, "scsiname", lun->l_scsiname);
 722                 assert(o != NULL);
 723         }
 724
 725         num_options = 0;
 726         TAILQ_FOREACH(o, &lun->l_options, o_next)
 727                 num_options++;
 728
 729         req.num_be_args = num_options;
 730         if (num_options > 0) {
 731                 req.be_args = malloc(num_options * sizeof(*req.be_args));
 732                 if (req.be_args == NULL) {
 733                         log_warn("error allocating %zd bytes",
 734                             num_options * sizeof(*req.be_args));
 735                         return (1);
 736                 }
 737
 738                 i = 0;
 739                 TAILQ_FOREACH(o, &lun->l_options, o_next) {
 740                         str_arg(&req.be_args[i], o->o_name, o->o_value);
 741                         i++;
 742                 }
 743                 assert(i == num_options);
 744         }
 745
 746         error = ioctl(ctl_fd, CTL_LUN_REQ, &req);
 747         free(req.be_args);
 748         if (error != 0) {
 749                 log_warn("error issuing CTL_LUN_REQ ioctl");
 750                 return (1);
 751         }
 752
 753         switch (req.status) {
 754         case CTL_LUN_ERROR:
 755                 log_warnx("LUN creation error: %s", req.error_str);
 756                 return (1);
 757         case CTL_LUN_WARNING:
 758                 log_warnx("LUN creation warning: %s", req.error_str);
 759                 break;
 760         case CTL_LUN_OK:
 761                 break;
 762         default:
 763                 log_warnx("unknown LUN creation status: %d",
 764                     req.status);
 765                 return (1);
 766         }
 767
 768         lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id);
 769         return (0);
 770 }
 771
 772 int
 773 kernel_lun_modify(struct lun *lun)
 774 {
 775         struct option *o;
 776         struct ctl_lun_req req;
 777         int error, i, num_options;
 778
 779         bzero(&req, sizeof(req));
 780
 781         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 782         req.reqtype = CTL_LUNREQ_MODIFY;
 783
 784         req.reqdata.modify.lun_id = lun->l_ctl_lun;
 785         req.reqdata.modify.lun_size_bytes = lun->l_size;
 786
 787         num_options = 0;
 788         TAILQ_FOREACH(o, &lun->l_options, o_next)
 789                 num_options++;
 790
 791         req.num_be_args = num_options;
 792         if (num_options > 0) {
 793                 req.be_args = malloc(num_options * sizeof(*req.be_args));
 794                 if (req.be_args == NULL) {
 795                         log_warn("error allocating %zd bytes",
 796                             num_options * sizeof(*req.be_args));
 797                         return (1);
 798                 }
 799
 800                 i = 0;
 801                 TAILQ_FOREACH(o, &lun->l_options, o_next) {
 802                         str_arg(&req.be_args[i], o->o_name, o->o_value);
 803                         i++;
 804                 }
 805                 assert(i == num_options);
 806         }
 807
 808         error = ioctl(ctl_fd, CTL_LUN_REQ, &req);
 809         free(req.be_args);
 810         if (error != 0) {
 811                 log_warn("error issuing CTL_LUN_REQ ioctl");
 812                 return (1);
 813         }
 814
 815         switch (req.status) {
 816         case CTL_LUN_ERROR:
 817                 log_warnx("LUN modification error: %s", req.error_str);
 818                 return (1);
 819         case CTL_LUN_WARNING:
 820                 log_warnx("LUN modification warning: %s", req.error_str);
 821                 break;
 822         case CTL_LUN_OK:
 823                 break;
 824         default:
 825                 log_warnx("unknown LUN modification status: %d",
 826                     req.status);
 827                 return (1);
 828         }
 829
 830         return (0);
 831 }
 832
 833 int
 834 kernel_lun_remove(struct lun *lun)
 835 {
 836         struct ctl_lun_req req;
 837
 838         bzero(&req, sizeof(req));
 839
 840         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 841         req.reqtype = CTL_LUNREQ_RM;
 842
 843         req.reqdata.rm.lun_id = lun->l_ctl_lun;
 844
 845         if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) {
 846                 log_warn("error issuing CTL_LUN_REQ ioctl");
 847                 return (1);
 848         }
 849
 850         switch (req.status) {
 851         case CTL_LUN_ERROR:
 852                 log_warnx("LUN removal error: %s", req.error_str);
 853                 return (1);
 854         case CTL_LUN_WARNING:
 855                 log_warnx("LUN removal warning: %s", req.error_str);
 856                 break;
 857         case CTL_LUN_OK:
 858                 break;
 859         default:
 860                 log_warnx("unknown LUN removal status: %d", req.status);
 861                 return (1);
 862         }
 863
 864         return (0);
 865 }
 866
 867 void
 868 kernel_handoff(struct connection *conn)
 869 {
 870         struct ctl_iscsi req;
 871
 872         bzero(&req, sizeof(req));
 873
 874         req.type = CTL_ISCSI_HANDOFF;
 875         strlcpy(req.data.handoff.initiator_name,
 876             conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name));
 877         strlcpy(req.data.handoff.initiator_addr,
 878             conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr));
 879         if (conn->conn_initiator_alias != NULL) {
 880                 strlcpy(req.data.handoff.initiator_alias,
 881                     conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias));
 882         }
 883         memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid,
 884             sizeof(req.data.handoff.initiator_isid));
 885         strlcpy(req.data.handoff.target_name,
 886             conn->conn_target->t_name, sizeof(req.data.handoff.target_name));
 887         if (conn->conn_portal->p_portal_group->pg_offload != NULL) {
 888                 strlcpy(req.data.handoff.offload,
 889                     conn->conn_portal->p_portal_group->pg_offload,
 890                     sizeof(req.data.handoff.offload));
 891         }
 892 #ifdef ICL_KERNEL_PROXY
 893         if (proxy_mode)
 894                 req.data.handoff.connection_id = conn->conn_socket;
 895         else
 896                 req.data.handoff.socket = conn->conn_socket;
 897 #else
 898         req.data.handoff.socket = conn->conn_socket;
 899 #endif
 900         req.data.handoff.portal_group_tag =
 901             conn->conn_portal->p_portal_group->pg_tag;
 902         if (conn->conn_header_digest == CONN_DIGEST_CRC32C)
 903                 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C;
 904         if (conn->conn_data_digest == CONN_DIGEST_CRC32C)
 905                 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C;
 906         req.data.handoff.cmdsn = conn->conn_cmdsn;
 907         req.data.handoff.statsn = conn->conn_statsn;
 908         req.data.handoff.max_recv_data_segment_length =
 909             conn->conn_max_recv_data_segment_length;
 910         req.data.handoff.max_send_data_segment_length =
 911             conn->conn_max_send_data_segment_length;
 912         req.data.handoff.max_burst_length = conn->conn_max_burst_length;
 913         req.data.handoff.first_burst_length = conn->conn_first_burst_length;
 914         req.data.handoff.immediate_data = conn->conn_immediate_data;
 915
 916         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
 917                 log_err(1, "error issuing CTL_ISCSI ioctl; "
 918                     "dropping connection");
 919         }
 920
 921         if (req.status != CTL_ISCSI_OK) {
 922                 log_errx(1, "error returned from CTL iSCSI handoff request: "
 923                     "%s; dropping connection", req.error_str);
 924         }
 925 }
 926
 927 void
 928 kernel_limits(const char *offload, int *max_recv_dsl, int *max_send_dsl,
 929     int *max_burst_length, int *first_burst_length)
 930 {
 931         struct ctl_iscsi req;
 932         struct ctl_iscsi_limits_params *cilp;
 933
 934         bzero(&req, sizeof(req));
 935
 936         req.type = CTL_ISCSI_LIMITS;
 937         cilp = (struct ctl_iscsi_limits_params *)&(req.data.limits);
 938         if (offload != NULL) {
 939                 strlcpy(cilp->offload, offload, sizeof(cilp->offload));
 940         }
 941
 942         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
 943                 log_err(1, "error issuing CTL_ISCSI ioctl; "
 944                     "dropping connection");
 945         }
 946
 947         if (req.status != CTL_ISCSI_OK) {
 948                 log_errx(1, "error returned from CTL iSCSI limits request: "
 949                     "%s; dropping connection", req.error_str);
 950         }
 951
 952         if (cilp->max_recv_data_segment_length != 0) {
 953                 *max_recv_dsl = cilp->max_recv_data_segment_length;
 954                 *max_send_dsl = cilp->max_recv_data_segment_length;
 955         }
 956         if (cilp->max_send_data_segment_length != 0)
 957                 *max_send_dsl = cilp->max_send_data_segment_length;
 958         if (cilp->max_burst_length != 0)
 959                 *max_burst_length = cilp->max_burst_length;
 960         if (cilp->first_burst_length != 0)
 961                 *first_burst_length = cilp->first_burst_length;
 962         if (*max_burst_length < *first_burst_length)
 963                 *first_burst_length = *max_burst_length;
 964
 965         if (offload != NULL) {
 966                 log_debugx("Kernel limits for offload \"%s\" are "
 967                     "MaxRecvDataSegment=%d, max_send_dsl=%d, "
 968                     "MaxBurstLength=%d, FirstBurstLength=%d",
 969                     offload, *max_recv_dsl, *max_send_dsl, *max_burst_length,
 970                     *first_burst_length);
 971         } else {
 972                 log_debugx("Kernel limits are "
 973                     "MaxRecvDataSegment=%d, max_send_dsl=%d, "
 974                     "MaxBurstLength=%d, FirstBurstLength=%d",
 975                     *max_recv_dsl, *max_send_dsl, *max_burst_length,
 976                     *first_burst_length);
 977         }
 978 }
 979
 980 int
 981 kernel_port_add(struct port *port)
 982 {
 983         struct option *o;
 984         struct ctl_port_entry entry;
 985         struct ctl_req req;
 986         struct ctl_lun_map lm;
 987         struct target *targ = port->p_target;
 988         struct portal_group *pg = port->p_portal_group;
 989         char tagstr[16];
 990         int error, i, n;
 991
 992         /* Create iSCSI port. */
 993         if (port->p_portal_group) {
 994                 bzero(&req, sizeof(req));
 995                 strlcpy(req.driver, "iscsi", sizeof(req.driver));
 996                 req.reqtype = CTL_REQ_CREATE;
 997                 req.num_args = 5;
 998                 TAILQ_FOREACH(o, &pg->pg_options, o_next)
 999                         req.num_args++;
1000                 req.args = malloc(req.num_args * sizeof(*req.args));
1001                 if (req.args == NULL)
1002                         log_err(1, "malloc");
1003                 n = 0;
1004                 req.args[n].namelen = sizeof("port_id");
1005                 req.args[n].name = __DECONST(char *, "port_id");
1006                 req.args[n].vallen = sizeof(port->p_ctl_port);
1007                 req.args[n].value = &port->p_ctl_port;
1008                 req.args[n++].flags = CTL_BEARG_WR;
1009                 str_arg(&req.args[n++], "cfiscsi_target", targ->t_name);
1010                 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag);
1011                 str_arg(&req.args[n++], "cfiscsi_portal_group_tag", tagstr);
1012                 if (targ->t_alias)
1013                         str_arg(&req.args[n++], "cfiscsi_target_alias", targ->t_alias);
1014                 str_arg(&req.args[n++], "ctld_portal_group_name", pg->pg_name);
1015                 TAILQ_FOREACH(o, &pg->pg_options, o_next)
1016                         str_arg(&req.args[n++], o->o_name, o->o_value);
1017                 req.num_args = n;
1018                 error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
1019                 free(req.args);
1020                 if (error != 0) {
1021                         log_warn("error issuing CTL_PORT_REQ ioctl");
1022                         return (1);
1023                 }
1024                 if (req.status == CTL_LUN_ERROR) {
1025                         log_warnx("error returned from port creation request: %s",
1026                             req.error_str);
1027                         return (1);
1028                 }
1029                 if (req.status != CTL_LUN_OK) {
1030                         log_warnx("unknown port creation request status %d",
1031                             req.status);
1032                         return (1);
1033                 }
1034         } else if (port->p_pport) {
1035                 port->p_ctl_port = port->p_pport->pp_ctl_port;
1036
1037                 if (strncmp(targ->t_name, "naa.", 4) == 0 &&
1038                     strlen(targ->t_name) == 20) {
1039                         bzero(&entry, sizeof(entry));
1040                         entry.port_type = CTL_PORT_NONE;
1041                         entry.targ_port = port->p_ctl_port;
1042                         entry.flags |= CTL_PORT_WWNN_VALID;
1043                         entry.wwnn = strtoull(targ->t_name + 4, NULL, 16);
1044                         if (ioctl(ctl_fd, CTL_SET_PORT_WWNS, &entry) == -1)
1045                                 log_warn("CTL_SET_PORT_WWNS ioctl failed");
1046                 }
1047         }
1048
1049         /* Explicitly enable mapping to block any access except allowed. */
1050         lm.port = port->p_ctl_port;
1051         lm.plun = UINT32_MAX;
1052         lm.lun = 0;
1053         error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1054         if (error != 0)
1055                 log_warn("CTL_LUN_MAP ioctl failed");
1056
1057         /* Map configured LUNs */
1058         for (i = 0; i < MAX_LUNS; i++) {
1059                 if (targ->t_luns[i] == NULL)
1060                         continue;
1061                 lm.port = port->p_ctl_port;
1062                 lm.plun = i;
1063                 lm.lun = targ->t_luns[i]->l_ctl_lun;
1064                 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1065                 if (error != 0)
1066                         log_warn("CTL_LUN_MAP ioctl failed");
1067         }
1068
1069         /* Enable port */
1070         bzero(&entry, sizeof(entry));
1071         entry.targ_port = port->p_ctl_port;
1072         error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry);
1073         if (error != 0) {
1074                 log_warn("CTL_ENABLE_PORT ioctl failed");
1075                 return (-1);
1076         }
1077
1078         return (0);
1079 }
1080
1081 int
1082 kernel_port_update(struct port *port, struct port *oport)
1083 {
1084         struct ctl_lun_map lm;
1085         struct target *targ = port->p_target;
1086         struct target *otarg = oport->p_target;
1087         int error, i;
1088         uint32_t olun;
1089
1090         /* Map configured LUNs and unmap others */
1091         for (i = 0; i < MAX_LUNS; i++) {
1092                 lm.port = port->p_ctl_port;
1093                 lm.plun = i;
1094                 if (targ->t_luns[i] == NULL)
1095                         lm.lun = UINT32_MAX;
1096                 else
1097                         lm.lun = targ->t_luns[i]->l_ctl_lun;
1098                 if (otarg->t_luns[i] == NULL)
1099                         olun = UINT32_MAX;
1100                 else
1101                         olun = otarg->t_luns[i]->l_ctl_lun;
1102                 if (lm.lun == olun)
1103                         continue;
1104                 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1105                 if (error != 0)
1106                         log_warn("CTL_LUN_MAP ioctl failed");
1107         }
1108         return (0);
1109 }
1110
1111 int
1112 kernel_port_remove(struct port *port)
1113 {
1114         struct ctl_port_entry entry;
1115         struct ctl_lun_map lm;
1116         struct ctl_req req;
1117         char tagstr[16];
1118         struct target *targ = port->p_target;
1119         struct portal_group *pg = port->p_portal_group;
1120         int error;
1121
1122         /* Disable port */
1123         bzero(&entry, sizeof(entry));
1124         entry.targ_port = port->p_ctl_port;
1125         error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry);
1126         if (error != 0) {
1127                 log_warn("CTL_DISABLE_PORT ioctl failed");
1128                 return (-1);
1129         }
1130
1131         /* Remove iSCSI port. */
1132         if (port->p_portal_group) {
1133                 bzero(&req, sizeof(req));
1134                 strlcpy(req.driver, "iscsi", sizeof(req.driver));
1135                 req.reqtype = CTL_REQ_REMOVE;
1136                 req.num_args = 2;
1137                 req.args = malloc(req.num_args * sizeof(*req.args));
1138                 if (req.args == NULL)
1139                         log_err(1, "malloc");
1140                 str_arg(&req.args[0], "cfiscsi_target", targ->t_name);
1141                 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag);
1142                 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr);
1143                 error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
1144                 free(req.args);
1145                 if (error != 0) {
1146                         log_warn("error issuing CTL_PORT_REQ ioctl");
1147                         return (1);
1148                 }
1149                 if (req.status == CTL_LUN_ERROR) {
1150                         log_warnx("error returned from port removal request: %s",
1151                             req.error_str);
1152                         return (1);
1153                 }
1154                 if (req.status != CTL_LUN_OK) {
1155                         log_warnx("unknown port removal request status %d",
1156                             req.status);
1157                         return (1);
1158                 }
1159         } else {
1160                 /* Disable LUN mapping. */
1161                 lm.port = port->p_ctl_port;
1162                 lm.plun = UINT32_MAX;
1163                 lm.lun = UINT32_MAX;
1164                 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1165                 if (error != 0)
1166                         log_warn("CTL_LUN_MAP ioctl failed");
1167         }
1168         return (0);
1169 }
1170
1171 #ifdef ICL_KERNEL_PROXY
1172 void
1173 kernel_listen(struct addrinfo *ai, bool iser, int portal_id)
1174 {
1175         struct ctl_iscsi req;
1176
1177         bzero(&req, sizeof(req));
1178
1179         req.type = CTL_ISCSI_LISTEN;
1180         req.data.listen.iser = iser;
1181         req.data.listen.domain = ai->ai_family;
1182         req.data.listen.socktype = ai->ai_socktype;
1183         req.data.listen.protocol = ai->ai_protocol;
1184         req.data.listen.addr = ai->ai_addr;
1185         req.data.listen.addrlen = ai->ai_addrlen;
1186         req.data.listen.portal_id = portal_id;
1187
1188         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
1189                 log_err(1, "error issuing CTL_ISCSI ioctl");
1190
1191         if (req.status != CTL_ISCSI_OK) {
1192                 log_errx(1, "error returned from CTL iSCSI listen: %s",
1193                     req.error_str);
1194         }
1195 }
1196
1197 void
1198 kernel_accept(int *connection_id, int *portal_id,
1199     struct sockaddr *client_sa, socklen_t *client_salen)
1200 {
1201         struct ctl_iscsi req;
1202         struct sockaddr_storage ss;
1203
1204         bzero(&req, sizeof(req));
1205
1206         req.type = CTL_ISCSI_ACCEPT;
1207         req.data.accept.initiator_addr = (struct sockaddr *)&ss;
1208
1209         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
1210                 log_err(1, "error issuing CTL_ISCSI ioctl");
1211
1212         if (req.status != CTL_ISCSI_OK) {
1213                 log_errx(1, "error returned from CTL iSCSI accept: %s",
1214                     req.error_str);
1215         }
1216
1217         *connection_id = req.data.accept.connection_id;
1218         *portal_id = req.data.accept.portal_id;
1219         *client_salen = req.data.accept.initiator_addrlen;
1220         memcpy(client_sa, &ss, *client_salen);
1221 }
1222
1223 void
1224 kernel_send(struct pdu *pdu)
1225 {
1226         struct ctl_iscsi req;
1227
1228         bzero(&req, sizeof(req));
1229
1230         req.type = CTL_ISCSI_SEND;
1231         req.data.send.connection_id = pdu->pdu_connection->conn_socket;
1232         req.data.send.bhs = pdu->pdu_bhs;
1233         req.data.send.data_segment_len = pdu->pdu_data_len;
1234         req.data.send.data_segment = pdu->pdu_data;
1235
1236         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1237                 log_err(1, "error issuing CTL_ISCSI ioctl; "
1238                     "dropping connection");
1239         }
1240
1241         if (req.status != CTL_ISCSI_OK) {
1242                 log_errx(1, "error returned from CTL iSCSI send: "
1243                     "%s; dropping connection", req.error_str);
1244         }
1245 }
1246
1247 void
1248 kernel_receive(struct pdu *pdu)
1249 {
1250         struct connection *conn;
1251         struct ctl_iscsi req;
1252
1253         conn = pdu->pdu_connection;
1254         pdu->pdu_data = malloc(conn->conn_max_recv_data_segment_length);
1255         if (pdu->pdu_data == NULL)
1256                 log_err(1, "malloc");
1257
1258         bzero(&req, sizeof(req));
1259
1260         req.type = CTL_ISCSI_RECEIVE;
1261         req.data.receive.connection_id = conn->conn_socket;
1262         req.data.receive.bhs = pdu->pdu_bhs;
1263         req.data.receive.data_segment_len =
1264             conn->conn_max_recv_data_segment_length;
1265         req.data.receive.data_segment = pdu->pdu_data;
1266
1267         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1268                 log_err(1, "error issuing CTL_ISCSI ioctl; "
1269                     "dropping connection");
1270         }
1271
1272         if (req.status != CTL_ISCSI_OK) {
1273                 log_errx(1, "error returned from CTL iSCSI receive: "
1274                     "%s; dropping connection", req.error_str);
1275         }
1276
1277 }
1278
1279 #endif /* ICL_KERNEL_PROXY */
1280
1281 /*
1282  * XXX: I CANT INTO LATIN
1283  */
1284 void
1285 kernel_capsicate(void)
1286 {
1287         int error;
1288         cap_rights_t rights;
1289         const unsigned long cmds[] = { CTL_ISCSI };
1290
1291         cap_rights_init(&rights, CAP_IOCTL);
1292         error = cap_rights_limit(ctl_fd, &rights);
1293         if (error != 0 && errno != ENOSYS)
1294                 log_err(1, "cap_rights_limit");
1295
1296         error = cap_ioctls_limit(ctl_fd, cmds, nitems(cmds));
1297
1298         if (error != 0 && errno != ENOSYS)
1299                 log_err(1, "cap_ioctls_limit");
1300
1301         error = cap_enter();
1302         if (error != 0 && errno != ENOSYS)
1303                 log_err(1, "cap_enter");
1304
1305         if (cap_sandboxed())
1306                 log_debugx("Capsicum capability mode enabled");
1307         else
1308                 log_warnx("Capsicum capability mode not supported");
1309 }
1310