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  * All rights reserved.
   8  *
   9  * Portions of this software were developed by Edward Tomasz Napierala
  10  * under sponsorship from the FreeBSD Foundation.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions, and the following disclaimer,
  17  *    without modification.
  18  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  19  *    substantially similar to the "NO WARRANTY" disclaimer below
  20  *    ("Disclaimer") and any redistribution must be conditioned upon
  21  *    including a substantially similar Disclaimer requirement for further
  22  *    binary redistribution.
  23  *
  24  * NO WARRANTY
  25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  29  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  33  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  34  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGES.
  36  *
  37  */
  38
  39 #include <sys/cdefs.h>
  40 __FBSDID("$FreeBSD$");
  41
  42 #include <sys/param.h>
  43 #include <sys/capsicum.h>
  44 #include <sys/callout.h>
  45 #include <sys/ioctl.h>
  46 #include <sys/linker.h>
  47 #include <sys/module.h>
  48 #include <sys/queue.h>
  49 #include <sys/sbuf.h>
  50 #include <sys/stat.h>
  51 #include <assert.h>
  52 #include <bsdxml.h>
  53 #include <ctype.h>
  54 #include <errno.h>
  55 #include <fcntl.h>
  56 #include <stdint.h>
  57 #include <stdio.h>
  58 #include <stdlib.h>
  59 #include <string.h>
  60 #include <strings.h>
  61 #include <cam/scsi/scsi_all.h>
  62 #include <cam/scsi/scsi_message.h>
  63 #include <cam/ctl/ctl.h>
  64 #include <cam/ctl/ctl_io.h>
  65 #include <cam/ctl/ctl_backend.h>
  66 #include <cam/ctl/ctl_ioctl.h>
  67 #include <cam/ctl/ctl_util.h>
  68 #include <cam/ctl/ctl_scsi_all.h>
  69
  70 #include "ctld.h"
  71
  72 #ifdef ICL_KERNEL_PROXY
  73 #include <netdb.h>
  74 #endif
  75
  76 extern bool proxy_mode;
  77
  78 static int      ctl_fd = 0;
  79
  80 void
  81 kernel_init(void)
  82 {
  83         int retval, saved_errno;
  84
  85         ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR);
  86         if (ctl_fd < 0 && errno == ENOENT) {
  87                 saved_errno = errno;
  88                 retval = kldload("ctl");
  89                 if (retval != -1)
  90                         ctl_fd = open(CTL_DEFAULT_DEV, O_RDWR);
  91                 else
  92                         errno = saved_errno;
  93         }
  94         if (ctl_fd < 0)
  95                 log_err(1, "failed to open %s", CTL_DEFAULT_DEV);
  96 #ifdef  WANT_ISCSI
  97         else {
  98                 saved_errno = errno;
  99                 if (modfind("cfiscsi") == -1 && kldload("cfiscsi") == -1)
 100                         log_warn("couldn't load cfiscsi");
 101                 errno = saved_errno;
 102         }
 103 #endif
 104 }
 105
 106 /*
 107  * Name/value pair used for per-LUN attributes.
 108  */
 109 struct cctl_lun_nv {
 110         char *name;
 111         char *value;
 112         STAILQ_ENTRY(cctl_lun_nv) links;
 113 };
 114
 115 /*
 116  * Backend LUN information.
 117  */
 118 struct cctl_lun {
 119         uint64_t lun_id;
 120         char *backend_type;
 121         uint8_t device_type;
 122         uint64_t size_blocks;
 123         uint32_t blocksize;
 124         char *serial_number;
 125         char *device_id;
 126         char *ctld_name;
 127         STAILQ_HEAD(,cctl_lun_nv) attr_list;
 128         STAILQ_ENTRY(cctl_lun) links;
 129 };
 130
 131 struct cctl_port {
 132         uint32_t port_id;
 133         char *port_frontend;
 134         char *port_name;
 135         int pp;
 136         int vp;
 137         int cfiscsi_state;
 138         char *cfiscsi_target;
 139         uint16_t cfiscsi_portal_group_tag;
 140         char *ctld_portal_group_name;
 141         STAILQ_HEAD(,cctl_lun_nv) attr_list;
 142         STAILQ_ENTRY(cctl_port) links;
 143 };
 144
 145 struct cctl_devlist_data {
 146         int num_luns;
 147         STAILQ_HEAD(,cctl_lun) lun_list;
 148         struct cctl_lun *cur_lun;
 149         int num_ports;
 150         STAILQ_HEAD(,cctl_port) port_list;
 151         struct cctl_port *cur_port;
 152         int level;
 153         struct sbuf *cur_sb[32];
 154 };
 155
 156 static void
 157 cctl_start_element(void *user_data, const char *name, const char **attr)
 158 {
 159         int i;
 160         struct cctl_devlist_data *devlist;
 161         struct cctl_lun *cur_lun;
 162
 163         devlist = (struct cctl_devlist_data *)user_data;
 164         cur_lun = devlist->cur_lun;
 165         devlist->level++;
 166         if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
 167             sizeof(devlist->cur_sb[0])))
 168                 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
 169                      sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
 170
 171         devlist->cur_sb[devlist->level] = sbuf_new_auto();
 172         if (devlist->cur_sb[devlist->level] == NULL)
 173                 log_err(1, "%s: unable to allocate sbuf", __func__);
 174
 175         if (strcmp(name, "lun") == 0) {
 176                 if (cur_lun != NULL)
 177                         log_errx(1, "%s: improper lun element nesting",
 178                             __func__);
 179
 180                 cur_lun = calloc(1, sizeof(*cur_lun));
 181                 if (cur_lun == NULL)
 182                         log_err(1, "%s: cannot allocate %zd bytes", __func__,
 183                             sizeof(*cur_lun));
 184
 185                 devlist->num_luns++;
 186                 devlist->cur_lun = cur_lun;
 187
 188                 STAILQ_INIT(&cur_lun->attr_list);
 189                 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links);
 190
 191                 for (i = 0; attr[i] != NULL; i += 2) {
 192                         if (strcmp(attr[i], "id") == 0) {
 193                                 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0);
 194                         } else {
 195                                 log_errx(1, "%s: invalid LUN attribute %s = %s",
 196                                      __func__, attr[i], attr[i+1]);
 197                         }
 198                 }
 199         }
 200 }
 201
 202 static void
 203 cctl_end_element(void *user_data, const char *name)
 204 {
 205         struct cctl_devlist_data *devlist;
 206         struct cctl_lun *cur_lun;
 207         char *str;
 208
 209         devlist = (struct cctl_devlist_data *)user_data;
 210         cur_lun = devlist->cur_lun;
 211
 212         if ((cur_lun == NULL)
 213          && (strcmp(name, "ctllunlist") != 0))
 214                 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name);
 215
 216         if (devlist->cur_sb[devlist->level] == NULL)
 217                 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
 218                      devlist->level, name);
 219
 220         sbuf_finish(devlist->cur_sb[devlist->level]);
 221         str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
 222
 223         if (strlen(str) == 0) {
 224                 free(str);
 225                 str = NULL;
 226         }
 227
 228         sbuf_delete(devlist->cur_sb[devlist->level]);
 229         devlist->cur_sb[devlist->level] = NULL;
 230         devlist->level--;
 231
 232         if (strcmp(name, "backend_type") == 0) {
 233                 cur_lun->backend_type = str;
 234                 str = NULL;
 235         } else if (strcmp(name, "lun_type") == 0) {
 236                 cur_lun->device_type = strtoull(str, NULL, 0);
 237         } else if (strcmp(name, "size") == 0) {
 238                 cur_lun->size_blocks = strtoull(str, NULL, 0);
 239         } else if (strcmp(name, "blocksize") == 0) {
 240                 cur_lun->blocksize = strtoul(str, NULL, 0);
 241         } else if (strcmp(name, "serial_number") == 0) {
 242                 cur_lun->serial_number = str;
 243                 str = NULL;
 244         } else if (strcmp(name, "device_id") == 0) {
 245                 cur_lun->device_id = str;
 246                 str = NULL;
 247         } else if (strcmp(name, "ctld_name") == 0) {
 248                 cur_lun->ctld_name = str;
 249                 str = NULL;
 250         } else if (strcmp(name, "lun") == 0) {
 251                 devlist->cur_lun = NULL;
 252         } else if (strcmp(name, "ctllunlist") == 0) {
 253                 /* Nothing. */
 254         } else {
 255                 struct cctl_lun_nv *nv;
 256
 257                 nv = calloc(1, sizeof(*nv));
 258                 if (nv == NULL)
 259                         log_err(1, "%s: can't allocate %zd bytes for nv pair",
 260                             __func__, sizeof(*nv));
 261
 262                 nv->name = checked_strdup(name);
 263
 264                 nv->value = str;
 265                 str = NULL;
 266                 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links);
 267         }
 268
 269         free(str);
 270 }
 271
 272 static void
 273 cctl_start_pelement(void *user_data, const char *name, const char **attr)
 274 {
 275         int i;
 276         struct cctl_devlist_data *devlist;
 277         struct cctl_port *cur_port;
 278
 279         devlist = (struct cctl_devlist_data *)user_data;
 280         cur_port = devlist->cur_port;
 281         devlist->level++;
 282         if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
 283             sizeof(devlist->cur_sb[0])))
 284                 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
 285                      sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
 286
 287         devlist->cur_sb[devlist->level] = sbuf_new_auto();
 288         if (devlist->cur_sb[devlist->level] == NULL)
 289                 log_err(1, "%s: unable to allocate sbuf", __func__);
 290
 291         if (strcmp(name, "targ_port") == 0) {
 292                 if (cur_port != NULL)
 293                         log_errx(1, "%s: improper port element nesting (%s)",
 294                             __func__, name);
 295
 296                 cur_port = calloc(1, sizeof(*cur_port));
 297                 if (cur_port == NULL)
 298                         log_err(1, "%s: cannot allocate %zd bytes", __func__,
 299                             sizeof(*cur_port));
 300
 301                 devlist->num_ports++;
 302                 devlist->cur_port = cur_port;
 303
 304                 STAILQ_INIT(&cur_port->attr_list);
 305                 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links);
 306
 307                 for (i = 0; attr[i] != NULL; i += 2) {
 308                         if (strcmp(attr[i], "id") == 0) {
 309                                 cur_port->port_id = strtoul(attr[i+1], NULL, 0);
 310                         } else {
 311                                 log_errx(1, "%s: invalid LUN attribute %s = %s",
 312                                      __func__, attr[i], attr[i+1]);
 313                         }
 314                 }
 315         }
 316 }
 317
 318 static void
 319 cctl_end_pelement(void *user_data, const char *name)
 320 {
 321         struct cctl_devlist_data *devlist;
 322         struct cctl_port *cur_port;
 323         char *str;
 324
 325         devlist = (struct cctl_devlist_data *)user_data;
 326         cur_port = devlist->cur_port;
 327
 328         if ((cur_port == NULL)
 329          && (strcmp(name, "ctlportlist") != 0))
 330                 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name);
 331
 332         if (devlist->cur_sb[devlist->level] == NULL)
 333                 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
 334                      devlist->level, name);
 335
 336         sbuf_finish(devlist->cur_sb[devlist->level]);
 337         str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
 338
 339         if (strlen(str) == 0) {
 340                 free(str);
 341                 str = NULL;
 342         }
 343
 344         sbuf_delete(devlist->cur_sb[devlist->level]);
 345         devlist->cur_sb[devlist->level] = NULL;
 346         devlist->level--;
 347
 348         if (strcmp(name, "frontend_type") == 0) {
 349                 cur_port->port_frontend = str;
 350                 str = NULL;
 351         } else if (strcmp(name, "port_name") == 0) {
 352                 cur_port->port_name = str;
 353                 str = NULL;
 354         } else if (strcmp(name, "physical_port") == 0) {
 355                 cur_port->pp = strtoul(str, NULL, 0);
 356         } else if (strcmp(name, "virtual_port") == 0) {
 357                 cur_port->vp = strtoul(str, NULL, 0);
 358         } else if (strcmp(name, "cfiscsi_target") == 0) {
 359                 cur_port->cfiscsi_target = str;
 360                 str = NULL;
 361         } else if (strcmp(name, "cfiscsi_state") == 0) {
 362                 cur_port->cfiscsi_state = strtoul(str, NULL, 0);
 363         } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) {
 364                 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0);
 365         } else if (strcmp(name, "ctld_portal_group_name") == 0) {
 366                 cur_port->ctld_portal_group_name = str;
 367                 str = NULL;
 368         } else if (strcmp(name, "targ_port") == 0) {
 369                 devlist->cur_port = NULL;
 370         } else if (strcmp(name, "ctlportlist") == 0) {
 371                 /* Nothing. */
 372         } else {
 373                 struct cctl_lun_nv *nv;
 374
 375                 nv = calloc(1, sizeof(*nv));
 376                 if (nv == NULL)
 377                         log_err(1, "%s: can't allocate %zd bytes for nv pair",
 378                             __func__, sizeof(*nv));
 379
 380                 nv->name = checked_strdup(name);
 381
 382                 nv->value = str;
 383                 str = NULL;
 384                 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links);
 385         }
 386
 387         free(str);
 388 }
 389
 390 static void
 391 cctl_char_handler(void *user_data, const XML_Char *str, int len)
 392 {
 393         struct cctl_devlist_data *devlist;
 394
 395         devlist = (struct cctl_devlist_data *)user_data;
 396
 397         sbuf_bcat(devlist->cur_sb[devlist->level], str, len);
 398 }
 399
 400 struct conf *
 401 conf_new_from_kernel(void)
 402 {
 403         struct conf *conf = NULL;
 404         struct target *targ;
 405         struct portal_group *pg;
 406         struct pport *pp;
 407         struct port *cp;
 408         struct lun *cl;
 409         struct option *o;
 410         struct ctl_lun_list list;
 411         struct cctl_devlist_data devlist;
 412         struct cctl_lun *lun;
 413         struct cctl_port *port;
 414         XML_Parser parser;
 415         char *str, *name;
 416         int len, retval;
 417
 418         bzero(&devlist, sizeof(devlist));
 419         STAILQ_INIT(&devlist.lun_list);
 420         STAILQ_INIT(&devlist.port_list);
 421
 422         log_debugx("obtaining previously configured CTL luns from the kernel");
 423
 424         str = NULL;
 425         len = 4096;
 426 retry:
 427         str = realloc(str, len);
 428         if (str == NULL)
 429                 log_err(1, "realloc");
 430
 431         bzero(&list, sizeof(list));
 432         list.alloc_len = len;
 433         list.status = CTL_LUN_LIST_NONE;
 434         list.lun_xml = str;
 435
 436         if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) {
 437                 log_warn("error issuing CTL_LUN_LIST ioctl");
 438                 free(str);
 439                 return (NULL);
 440         }
 441
 442         if (list.status == CTL_LUN_LIST_ERROR) {
 443                 log_warnx("error returned from CTL_LUN_LIST ioctl: %s",
 444                     list.error_str);
 445                 free(str);
 446                 return (NULL);
 447         }
 448
 449         if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
 450                 len = len << 1;
 451                 goto retry;
 452         }
 453
 454         parser = XML_ParserCreate(NULL);
 455         if (parser == NULL) {
 456                 log_warnx("unable to create XML parser");
 457                 free(str);
 458                 return (NULL);
 459         }
 460
 461         XML_SetUserData(parser, &devlist);
 462         XML_SetElementHandler(parser, cctl_start_element, cctl_end_element);
 463         XML_SetCharacterDataHandler(parser, cctl_char_handler);
 464
 465         retval = XML_Parse(parser, str, strlen(str), 1);
 466         XML_ParserFree(parser);
 467         free(str);
 468         if (retval != 1) {
 469                 log_warnx("XML_Parse failed");
 470                 return (NULL);
 471         }
 472
 473         str = NULL;
 474         len = 4096;
 475 retry_port:
 476         str = realloc(str, len);
 477         if (str == NULL)
 478                 log_err(1, "realloc");
 479
 480         bzero(&list, sizeof(list));
 481         list.alloc_len = len;
 482         list.status = CTL_LUN_LIST_NONE;
 483         list.lun_xml = str;
 484
 485         if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) {
 486                 log_warn("error issuing CTL_PORT_LIST ioctl");
 487                 free(str);
 488                 return (NULL);
 489         }
 490
 491         if (list.status == CTL_LUN_LIST_ERROR) {
 492                 log_warnx("error returned from CTL_PORT_LIST ioctl: %s",
 493                     list.error_str);
 494                 free(str);
 495                 return (NULL);
 496         }
 497
 498         if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
 499                 len = len << 1;
 500                 goto retry_port;
 501         }
 502
 503         parser = XML_ParserCreate(NULL);
 504         if (parser == NULL) {
 505                 log_warnx("unable to create XML parser");
 506                 free(str);
 507                 return (NULL);
 508         }
 509
 510         XML_SetUserData(parser, &devlist);
 511         XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement);
 512         XML_SetCharacterDataHandler(parser, cctl_char_handler);
 513
 514         retval = XML_Parse(parser, str, strlen(str), 1);
 515         XML_ParserFree(parser);
 516         free(str);
 517         if (retval != 1) {
 518                 log_warnx("XML_Parse failed");
 519                 return (NULL);
 520         }
 521
 522         conf = conf_new();
 523
 524         name = NULL;
 525         STAILQ_FOREACH(port, &devlist.port_list, links) {
 526                 if (strcmp(port->port_frontend, "ha") == 0)
 527                         continue;
 528                 free(name);
 529                 if (port->pp == 0 && port->vp == 0) {
 530                         name = checked_strdup(port->port_name);
 531                 } else if (port->vp == 0) {
 532                         retval = asprintf(&name, "%s/%d",
 533                             port->port_name, port->pp);
 534                         if (retval <= 0)
 535                                 log_err(1, "asprintf");
 536                 } else {
 537                         retval = asprintf(&name, "%s/%d/%d",
 538                             port->port_name, port->pp, port->vp);
 539                         if (retval <= 0)
 540                                 log_err(1, "asprintf");
 541                 }
 542
 543                 if (port->cfiscsi_target == NULL) {
 544                         log_debugx("CTL port %u \"%s\" wasn't managed by ctld; ",
 545                             port->port_id, name);
 546                         pp = pport_find(conf, name);
 547                         if (pp == NULL) {
 548 #if 0
 549                                 log_debugx("found new kernel port %u \"%s\"",
 550                                     port->port_id, name);
 551 #endif
 552                                 pp = pport_new(conf, name, port->port_id);
 553                                 if (pp == NULL) {
 554                                         log_warnx("pport_new failed");
 555                                         continue;
 556                                 }
 557                         }
 558                         continue;
 559                 }
 560                 if (port->cfiscsi_state != 1) {
 561                         log_debugx("CTL port %ju is not active (%d); ignoring",
 562                             (uintmax_t)port->port_id, port->cfiscsi_state);
 563                         continue;
 564                 }
 565
 566                 targ = target_find(conf, port->cfiscsi_target);
 567                 if (targ == NULL) {
 568 #if 0
 569                         log_debugx("found new kernel target %s for CTL port %ld",
 570                             port->cfiscsi_target, port->port_id);
 571 #endif
 572                         targ = target_new(conf, port->cfiscsi_target);
 573                         if (targ == NULL) {
 574                                 log_warnx("target_new failed");
 575                                 continue;
 576                         }
 577                 }
 578
 579                 if (port->ctld_portal_group_name == NULL)
 580                         continue;
 581                 pg = portal_group_find(conf, port->ctld_portal_group_name);
 582                 if (pg == NULL) {
 583 #if 0
 584                         log_debugx("found new kernel portal group %s for CTL port %ld",
 585                             port->ctld_portal_group_name, port->port_id);
 586 #endif
 587                         pg = portal_group_new(conf, port->ctld_portal_group_name);
 588                         if (pg == NULL) {
 589                                 log_warnx("portal_group_new failed");
 590                                 continue;
 591                         }
 592                 }
 593                 pg->pg_tag = port->cfiscsi_portal_group_tag;
 594                 cp = port_new(conf, targ, pg);
 595                 if (cp == NULL) {
 596                         log_warnx("port_new failed");
 597                         continue;
 598                 }
 599                 cp->p_ctl_port = port->port_id;
 600         }
 601         free(name);
 602
 603         STAILQ_FOREACH(lun, &devlist.lun_list, links) {
 604                 struct cctl_lun_nv *nv;
 605
 606                 if (lun->ctld_name == NULL) {
 607                         log_debugx("CTL lun %ju wasn't managed by ctld; "
 608                             "ignoring", (uintmax_t)lun->lun_id);
 609                         continue;
 610                 }
 611
 612                 cl = lun_find(conf, lun->ctld_name);
 613                 if (cl != NULL) {
 614                         log_warnx("found CTL lun %ju \"%s\", "
 615                             "also backed by CTL lun %d; ignoring",
 616                             (uintmax_t)lun->lun_id, lun->ctld_name,
 617                             cl->l_ctl_lun);
 618                         continue;
 619                 }
 620
 621                 log_debugx("found CTL lun %ju \"%s\"",
 622                     (uintmax_t)lun->lun_id, lun->ctld_name);
 623
 624                 cl = lun_new(conf, lun->ctld_name);
 625                 if (cl == NULL) {
 626                         log_warnx("lun_new failed");
 627                         continue;
 628                 }
 629                 lun_set_backend(cl, lun->backend_type);
 630                 lun_set_device_type(cl, lun->device_type);
 631                 lun_set_blocksize(cl, lun->blocksize);
 632                 lun_set_device_id(cl, lun->device_id);
 633                 lun_set_serial(cl, lun->serial_number);
 634                 lun_set_size(cl, lun->size_blocks * cl->l_blocksize);
 635                 lun_set_ctl_lun(cl, lun->lun_id);
 636
 637                 STAILQ_FOREACH(nv, &lun->attr_list, links) {
 638                         if (strcmp(nv->name, "file") == 0 ||
 639                             strcmp(nv->name, "dev") == 0) {
 640                                 lun_set_path(cl, nv->value);
 641                                 continue;
 642                         }
 643                         o = option_new(&cl->l_options, nv->name, nv->value);
 644                         if (o == NULL)
 645                                 log_warnx("unable to add CTL lun option %s "
 646                                     "for CTL lun %ju \"%s\"",
 647                                     nv->name, (uintmax_t) lun->lun_id,
 648                                     cl->l_name);
 649                 }
 650         }
 651
 652         return (conf);
 653 }
 654
 655 static void
 656 str_arg(struct ctl_be_arg *arg, const char *name, const char *value)
 657 {
 658
 659         arg->namelen = strlen(name) + 1;
 660         arg->name = __DECONST(char *, name);
 661         arg->vallen = strlen(value) + 1;
 662         arg->value = __DECONST(char *, value);
 663         arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD;
 664 }
 665
 666 int
 667 kernel_lun_add(struct lun *lun)
 668 {
 669         struct option *o;
 670         struct ctl_lun_req req;
 671         int error, i, num_options;
 672
 673         bzero(&req, sizeof(req));
 674
 675         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 676         req.reqtype = CTL_LUNREQ_CREATE;
 677
 678         req.reqdata.create.blocksize_bytes = lun->l_blocksize;
 679
 680         if (lun->l_size != 0)
 681                 req.reqdata.create.lun_size_bytes = lun->l_size;
 682
 683         if (lun->l_ctl_lun >= 0) {
 684                 req.reqdata.create.req_lun_id = lun->l_ctl_lun;
 685                 req.reqdata.create.flags |= CTL_LUN_FLAG_ID_REQ;
 686         }
 687
 688         req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE;
 689         req.reqdata.create.device_type = lun->l_device_type;
 690
 691         if (lun->l_serial != NULL) {
 692                 strncpy(req.reqdata.create.serial_num, lun->l_serial,
 693                         sizeof(req.reqdata.create.serial_num));
 694                 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM;
 695         }
 696
 697         if (lun->l_device_id != NULL) {
 698                 strncpy(req.reqdata.create.device_id, lun->l_device_id,
 699                         sizeof(req.reqdata.create.device_id));
 700                 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID;
 701         }
 702
 703         if (lun->l_path != NULL) {
 704                 o = option_find(&lun->l_options, "file");
 705                 if (o != NULL) {
 706                         option_set(o, lun->l_path);
 707                 } else {
 708                         o = option_new(&lun->l_options, "file", lun->l_path);
 709                         assert(o != NULL);
 710                 }
 711         }
 712
 713         o = option_find(&lun->l_options, "ctld_name");
 714         if (o != NULL) {
 715                 option_set(o, lun->l_name);
 716         } else {
 717                 o = option_new(&lun->l_options, "ctld_name", lun->l_name);
 718                 assert(o != NULL);
 719         }
 720
 721         o = option_find(&lun->l_options, "scsiname");
 722         if (o == NULL && lun->l_scsiname != NULL) {
 723                 o = option_new(&lun->l_options, "scsiname", lun->l_scsiname);
 724                 assert(o != NULL);
 725         }
 726
 727         num_options = 0;
 728         TAILQ_FOREACH(o, &lun->l_options, o_next)
 729                 num_options++;
 730
 731         req.num_be_args = num_options;
 732         if (num_options > 0) {
 733                 req.be_args = malloc(num_options * sizeof(*req.be_args));
 734                 if (req.be_args == NULL) {
 735                         log_warn("error allocating %zd bytes",
 736                             num_options * sizeof(*req.be_args));
 737                         return (1);
 738                 }
 739
 740                 i = 0;
 741                 TAILQ_FOREACH(o, &lun->l_options, o_next) {
 742                         str_arg(&req.be_args[i], o->o_name, o->o_value);
 743                         i++;
 744                 }
 745                 assert(i == num_options);
 746         }
 747
 748         error = ioctl(ctl_fd, CTL_LUN_REQ, &req);
 749         free(req.be_args);
 750         if (error != 0) {
 751                 log_warn("error issuing CTL_LUN_REQ ioctl");
 752                 return (1);
 753         }
 754
 755         switch (req.status) {
 756         case CTL_LUN_ERROR:
 757                 log_warnx("LUN creation error: %s", req.error_str);
 758                 return (1);
 759         case CTL_LUN_WARNING:
 760                 log_warnx("LUN creation warning: %s", req.error_str);
 761                 break;
 762         case CTL_LUN_OK:
 763                 break;
 764         default:
 765                 log_warnx("unknown LUN creation status: %d",
 766                     req.status);
 767                 return (1);
 768         }
 769
 770         lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id);
 771         return (0);
 772 }
 773
 774 int
 775 kernel_lun_modify(struct lun *lun)
 776 {
 777         struct option *o;
 778         struct ctl_lun_req req;
 779         int error, i, num_options;
 780
 781         bzero(&req, sizeof(req));
 782
 783         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 784         req.reqtype = CTL_LUNREQ_MODIFY;
 785
 786         req.reqdata.modify.lun_id = lun->l_ctl_lun;
 787         req.reqdata.modify.lun_size_bytes = lun->l_size;
 788
 789         num_options = 0;
 790         TAILQ_FOREACH(o, &lun->l_options, o_next)
 791                 num_options++;
 792
 793         req.num_be_args = num_options;
 794         if (num_options > 0) {
 795                 req.be_args = malloc(num_options * sizeof(*req.be_args));
 796                 if (req.be_args == NULL) {
 797                         log_warn("error allocating %zd bytes",
 798                             num_options * sizeof(*req.be_args));
 799                         return (1);
 800                 }
 801
 802                 i = 0;
 803                 TAILQ_FOREACH(o, &lun->l_options, o_next) {
 804                         str_arg(&req.be_args[i], o->o_name, o->o_value);
 805                         i++;
 806                 }
 807                 assert(i == num_options);
 808         }
 809
 810         error = ioctl(ctl_fd, CTL_LUN_REQ, &req);
 811         free(req.be_args);
 812         if (error != 0) {
 813                 log_warn("error issuing CTL_LUN_REQ ioctl");
 814                 return (1);
 815         }
 816
 817         switch (req.status) {
 818         case CTL_LUN_ERROR:
 819                 log_warnx("LUN modification error: %s", req.error_str);
 820                 return (1);
 821         case CTL_LUN_WARNING:
 822                 log_warnx("LUN modification warning: %s", req.error_str);
 823                 break;
 824         case CTL_LUN_OK:
 825                 break;
 826         default:
 827                 log_warnx("unknown LUN modification status: %d",
 828                     req.status);
 829                 return (1);
 830         }
 831
 832         return (0);
 833 }
 834
 835 int
 836 kernel_lun_remove(struct lun *lun)
 837 {
 838         struct ctl_lun_req req;
 839
 840         bzero(&req, sizeof(req));
 841
 842         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 843         req.reqtype = CTL_LUNREQ_RM;
 844
 845         req.reqdata.rm.lun_id = lun->l_ctl_lun;
 846
 847         if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) {
 848                 log_warn("error issuing CTL_LUN_REQ ioctl");
 849                 return (1);
 850         }
 851
 852         switch (req.status) {
 853         case CTL_LUN_ERROR:
 854                 log_warnx("LUN removal error: %s", req.error_str);
 855                 return (1);
 856         case CTL_LUN_WARNING:
 857                 log_warnx("LUN removal warning: %s", req.error_str);
 858                 break;
 859         case CTL_LUN_OK:
 860                 break;
 861         default:
 862                 log_warnx("unknown LUN removal status: %d", req.status);
 863                 return (1);
 864         }
 865
 866         return (0);
 867 }
 868
 869 void
 870 kernel_handoff(struct connection *conn)
 871 {
 872         struct ctl_iscsi req;
 873
 874         bzero(&req, sizeof(req));
 875
 876         req.type = CTL_ISCSI_HANDOFF;
 877         strlcpy(req.data.handoff.initiator_name,
 878             conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name));
 879         strlcpy(req.data.handoff.initiator_addr,
 880             conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr));
 881         if (conn->conn_initiator_alias != NULL) {
 882                 strlcpy(req.data.handoff.initiator_alias,
 883                     conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias));
 884         }
 885         memcpy(req.data.handoff.initiator_isid, conn->conn_initiator_isid,
 886             sizeof(req.data.handoff.initiator_isid));
 887         strlcpy(req.data.handoff.target_name,
 888             conn->conn_target->t_name, sizeof(req.data.handoff.target_name));
 889         if (conn->conn_portal->p_portal_group->pg_offload != NULL) {
 890                 strlcpy(req.data.handoff.offload,
 891                     conn->conn_portal->p_portal_group->pg_offload,
 892                     sizeof(req.data.handoff.offload));
 893         }
 894 #ifdef ICL_KERNEL_PROXY
 895         if (proxy_mode)
 896                 req.data.handoff.connection_id = conn->conn_socket;
 897         else
 898                 req.data.handoff.socket = conn->conn_socket;
 899 #else
 900         req.data.handoff.socket = conn->conn_socket;
 901 #endif
 902         req.data.handoff.portal_group_tag =
 903             conn->conn_portal->p_portal_group->pg_tag;
 904         if (conn->conn_header_digest == CONN_DIGEST_CRC32C)
 905                 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C;
 906         if (conn->conn_data_digest == CONN_DIGEST_CRC32C)
 907                 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C;
 908         req.data.handoff.cmdsn = conn->conn_cmdsn;
 909         req.data.handoff.statsn = conn->conn_statsn;
 910         req.data.handoff.max_recv_data_segment_length =
 911             conn->conn_max_recv_data_segment_length;
 912         req.data.handoff.max_send_data_segment_length =
 913             conn->conn_max_send_data_segment_length;
 914         req.data.handoff.max_burst_length = conn->conn_max_burst_length;
 915         req.data.handoff.first_burst_length = conn->conn_first_burst_length;
 916         req.data.handoff.immediate_data = conn->conn_immediate_data;
 917
 918         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
 919                 log_err(1, "error issuing CTL_ISCSI ioctl; "
 920                     "dropping connection");
 921         }
 922
 923         if (req.status != CTL_ISCSI_OK) {
 924                 log_errx(1, "error returned from CTL iSCSI handoff request: "
 925                     "%s; dropping connection", req.error_str);
 926         }
 927 }
 928
 929 void
 930 kernel_limits(const char *offload, int *max_recv_dsl, int *max_send_dsl,
 931     int *max_burst_length, int *first_burst_length)
 932 {
 933         struct ctl_iscsi req;
 934         struct ctl_iscsi_limits_params *cilp;
 935
 936         bzero(&req, sizeof(req));
 937
 938         req.type = CTL_ISCSI_LIMITS;
 939         cilp = (struct ctl_iscsi_limits_params *)&(req.data.limits);
 940         if (offload != NULL) {
 941                 strlcpy(cilp->offload, offload, sizeof(cilp->offload));
 942         }
 943
 944         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
 945                 log_err(1, "error issuing CTL_ISCSI ioctl; "
 946                     "dropping connection");
 947         }
 948
 949         if (req.status != CTL_ISCSI_OK) {
 950                 log_errx(1, "error returned from CTL iSCSI limits request: "
 951                     "%s; dropping connection", req.error_str);
 952         }
 953
 954         if (cilp->max_recv_data_segment_length != 0) {
 955                 *max_recv_dsl = cilp->max_recv_data_segment_length;
 956                 *max_send_dsl = cilp->max_recv_data_segment_length;
 957         }
 958         if (cilp->max_send_data_segment_length != 0)
 959                 *max_send_dsl = cilp->max_send_data_segment_length;
 960         if (cilp->max_burst_length != 0)
 961                 *max_burst_length = cilp->max_burst_length;
 962         if (cilp->first_burst_length != 0)
 963                 *first_burst_length = cilp->first_burst_length;
 964         if (*max_burst_length < *first_burst_length)
 965                 *first_burst_length = *max_burst_length;
 966
 967         if (offload != NULL) {
 968                 log_debugx("Kernel limits for offload \"%s\" are "
 969                     "MaxRecvDataSegment=%d, max_send_dsl=%d, "
 970                     "MaxBurstLength=%d, FirstBurstLength=%d",
 971                     offload, *max_recv_dsl, *max_send_dsl, *max_burst_length,
 972                     *first_burst_length);
 973         } else {
 974                 log_debugx("Kernel limits are "
 975                     "MaxRecvDataSegment=%d, max_send_dsl=%d, "
 976                     "MaxBurstLength=%d, FirstBurstLength=%d",
 977                     *max_recv_dsl, *max_send_dsl, *max_burst_length,
 978                     *first_burst_length);
 979         }
 980 }
 981
 982 int
 983 kernel_port_add(struct port *port)
 984 {
 985         struct option *o;
 986         struct ctl_port_entry entry;
 987         struct ctl_req req;
 988         struct ctl_lun_map lm;
 989         struct target *targ = port->p_target;
 990         struct portal_group *pg = port->p_portal_group;
 991         char tagstr[16];
 992         int error, i, n;
 993
 994         /* Create iSCSI port. */
 995         if (port->p_portal_group) {
 996                 bzero(&req, sizeof(req));
 997                 strlcpy(req.driver, "iscsi", sizeof(req.driver));
 998                 req.reqtype = CTL_REQ_CREATE;
 999                 req.num_args = 5;
1000                 TAILQ_FOREACH(o, &pg->pg_options, o_next)
1001                         req.num_args++;
1002                 req.args = malloc(req.num_args * sizeof(*req.args));
1003                 if (req.args == NULL)
1004                         log_err(1, "malloc");
1005                 n = 0;
1006                 req.args[n].namelen = sizeof("port_id");
1007                 req.args[n].name = __DECONST(char *, "port_id");
1008                 req.args[n].vallen = sizeof(port->p_ctl_port);
1009                 req.args[n].value = &port->p_ctl_port;
1010                 req.args[n++].flags = CTL_BEARG_WR;
1011                 str_arg(&req.args[n++], "cfiscsi_target", targ->t_name);
1012                 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag);
1013                 str_arg(&req.args[n++], "cfiscsi_portal_group_tag", tagstr);
1014                 if (targ->t_alias)
1015                         str_arg(&req.args[n++], "cfiscsi_target_alias", targ->t_alias);
1016                 str_arg(&req.args[n++], "ctld_portal_group_name", pg->pg_name);
1017                 TAILQ_FOREACH(o, &pg->pg_options, o_next)
1018                         str_arg(&req.args[n++], o->o_name, o->o_value);
1019                 req.num_args = n;
1020                 error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
1021                 free(req.args);
1022                 if (error != 0) {
1023                         log_warn("error issuing CTL_PORT_REQ ioctl");
1024                         return (1);
1025                 }
1026                 if (req.status == CTL_LUN_ERROR) {
1027                         log_warnx("error returned from port creation request: %s",
1028                             req.error_str);
1029                         return (1);
1030                 }
1031                 if (req.status != CTL_LUN_OK) {
1032                         log_warnx("unknown port creation request status %d",
1033                             req.status);
1034                         return (1);
1035                 }
1036         } else if (port->p_pport) {
1037                 port->p_ctl_port = port->p_pport->pp_ctl_port;
1038
1039                 if (strncmp(targ->t_name, "naa.", 4) == 0 &&
1040                     strlen(targ->t_name) == 20) {
1041                         bzero(&entry, sizeof(entry));
1042                         entry.port_type = CTL_PORT_NONE;
1043                         entry.targ_port = port->p_ctl_port;
1044                         entry.flags |= CTL_PORT_WWNN_VALID;
1045                         entry.wwnn = strtoull(targ->t_name + 4, NULL, 16);
1046                         if (ioctl(ctl_fd, CTL_SET_PORT_WWNS, &entry) == -1)
1047                                 log_warn("CTL_SET_PORT_WWNS ioctl failed");
1048                 }
1049         }
1050
1051         /* Explicitly enable mapping to block any access except allowed. */
1052         lm.port = port->p_ctl_port;
1053         lm.plun = UINT32_MAX;
1054         lm.lun = 0;
1055         error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1056         if (error != 0)
1057                 log_warn("CTL_LUN_MAP ioctl failed");
1058
1059         /* Map configured LUNs */
1060         for (i = 0; i < MAX_LUNS; i++) {
1061                 if (targ->t_luns[i] == NULL)
1062                         continue;
1063                 lm.port = port->p_ctl_port;
1064                 lm.plun = i;
1065                 lm.lun = targ->t_luns[i]->l_ctl_lun;
1066                 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1067                 if (error != 0)
1068                         log_warn("CTL_LUN_MAP ioctl failed");
1069         }
1070
1071         /* Enable port */
1072         bzero(&entry, sizeof(entry));
1073         entry.targ_port = port->p_ctl_port;
1074         error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry);
1075         if (error != 0) {
1076                 log_warn("CTL_ENABLE_PORT ioctl failed");
1077                 return (-1);
1078         }
1079
1080         return (0);
1081 }
1082
1083 int
1084 kernel_port_update(struct port *port, struct port *oport)
1085 {
1086         struct ctl_lun_map lm;
1087         struct target *targ = port->p_target;
1088         struct target *otarg = oport->p_target;
1089         int error, i;
1090         uint32_t olun;
1091
1092         /* Map configured LUNs and unmap others */
1093         for (i = 0; i < MAX_LUNS; i++) {
1094                 lm.port = port->p_ctl_port;
1095                 lm.plun = i;
1096                 if (targ->t_luns[i] == NULL)
1097                         lm.lun = UINT32_MAX;
1098                 else
1099                         lm.lun = targ->t_luns[i]->l_ctl_lun;
1100                 if (otarg->t_luns[i] == NULL)
1101                         olun = UINT32_MAX;
1102                 else
1103                         olun = otarg->t_luns[i]->l_ctl_lun;
1104                 if (lm.lun == olun)
1105                         continue;
1106                 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1107                 if (error != 0)
1108                         log_warn("CTL_LUN_MAP ioctl failed");
1109         }
1110         return (0);
1111 }
1112
1113 int
1114 kernel_port_remove(struct port *port)
1115 {
1116         struct ctl_port_entry entry;
1117         struct ctl_lun_map lm;
1118         struct ctl_req req;
1119         char tagstr[16];
1120         struct target *targ = port->p_target;
1121         struct portal_group *pg = port->p_portal_group;
1122         int error;
1123
1124         /* Disable port */
1125         bzero(&entry, sizeof(entry));
1126         entry.targ_port = port->p_ctl_port;
1127         error = ioctl(ctl_fd, CTL_DISABLE_PORT, &entry);
1128         if (error != 0) {
1129                 log_warn("CTL_DISABLE_PORT ioctl failed");
1130                 return (-1);
1131         }
1132
1133         /* Remove iSCSI port. */
1134         if (port->p_portal_group) {
1135                 bzero(&req, sizeof(req));
1136                 strlcpy(req.driver, "iscsi", sizeof(req.driver));
1137                 req.reqtype = CTL_REQ_REMOVE;
1138                 req.num_args = 2;
1139                 req.args = malloc(req.num_args * sizeof(*req.args));
1140                 if (req.args == NULL)
1141                         log_err(1, "malloc");
1142                 str_arg(&req.args[0], "cfiscsi_target", targ->t_name);
1143                 snprintf(tagstr, sizeof(tagstr), "%d", pg->pg_tag);
1144                 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr);
1145                 error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
1146                 free(req.args);
1147                 if (error != 0) {
1148                         log_warn("error issuing CTL_PORT_REQ ioctl");
1149                         return (1);
1150                 }
1151                 if (req.status == CTL_LUN_ERROR) {
1152                         log_warnx("error returned from port removal request: %s",
1153                             req.error_str);
1154                         return (1);
1155                 }
1156                 if (req.status != CTL_LUN_OK) {
1157                         log_warnx("unknown port removal request status %d",
1158                             req.status);
1159                         return (1);
1160                 }
1161         } else {
1162                 /* Disable LUN mapping. */
1163                 lm.port = port->p_ctl_port;
1164                 lm.plun = UINT32_MAX;
1165                 lm.lun = UINT32_MAX;
1166                 error = ioctl(ctl_fd, CTL_LUN_MAP, &lm);
1167                 if (error != 0)
1168                         log_warn("CTL_LUN_MAP ioctl failed");
1169         }
1170         return (0);
1171 }
1172
1173 #ifdef ICL_KERNEL_PROXY
1174 void
1175 kernel_listen(struct addrinfo *ai, bool iser, int portal_id)
1176 {
1177         struct ctl_iscsi req;
1178
1179         bzero(&req, sizeof(req));
1180
1181         req.type = CTL_ISCSI_LISTEN;
1182         req.data.listen.iser = iser;
1183         req.data.listen.domain = ai->ai_family;
1184         req.data.listen.socktype = ai->ai_socktype;
1185         req.data.listen.protocol = ai->ai_protocol;
1186         req.data.listen.addr = ai->ai_addr;
1187         req.data.listen.addrlen = ai->ai_addrlen;
1188         req.data.listen.portal_id = portal_id;
1189
1190         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
1191                 log_err(1, "error issuing CTL_ISCSI ioctl");
1192
1193         if (req.status != CTL_ISCSI_OK) {
1194                 log_errx(1, "error returned from CTL iSCSI listen: %s",
1195                     req.error_str);
1196         }
1197 }
1198
1199 void
1200 kernel_accept(int *connection_id, int *portal_id,
1201     struct sockaddr *client_sa, socklen_t *client_salen)
1202 {
1203         struct ctl_iscsi req;
1204         struct sockaddr_storage ss;
1205
1206         bzero(&req, sizeof(req));
1207
1208         req.type = CTL_ISCSI_ACCEPT;
1209         req.data.accept.initiator_addr = (struct sockaddr *)&ss;
1210
1211         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
1212                 log_err(1, "error issuing CTL_ISCSI ioctl");
1213
1214         if (req.status != CTL_ISCSI_OK) {
1215                 log_errx(1, "error returned from CTL iSCSI accept: %s",
1216                     req.error_str);
1217         }
1218
1219         *connection_id = req.data.accept.connection_id;
1220         *portal_id = req.data.accept.portal_id;
1221         *client_salen = req.data.accept.initiator_addrlen;
1222         memcpy(client_sa, &ss, *client_salen);
1223 }
1224
1225 void
1226 kernel_send(struct pdu *pdu)
1227 {
1228         struct ctl_iscsi req;
1229
1230         bzero(&req, sizeof(req));
1231
1232         req.type = CTL_ISCSI_SEND;
1233         req.data.send.connection_id = pdu->pdu_connection->conn_socket;
1234         req.data.send.bhs = pdu->pdu_bhs;
1235         req.data.send.data_segment_len = pdu->pdu_data_len;
1236         req.data.send.data_segment = pdu->pdu_data;
1237
1238         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1239                 log_err(1, "error issuing CTL_ISCSI ioctl; "
1240                     "dropping connection");
1241         }
1242
1243         if (req.status != CTL_ISCSI_OK) {
1244                 log_errx(1, "error returned from CTL iSCSI send: "
1245                     "%s; dropping connection", req.error_str);
1246         }
1247 }
1248
1249 void
1250 kernel_receive(struct pdu *pdu)
1251 {
1252         struct connection *conn;
1253         struct ctl_iscsi req;
1254
1255         conn = pdu->pdu_connection;
1256         pdu->pdu_data = malloc(conn->conn_max_recv_data_segment_length);
1257         if (pdu->pdu_data == NULL)
1258                 log_err(1, "malloc");
1259
1260         bzero(&req, sizeof(req));
1261
1262         req.type = CTL_ISCSI_RECEIVE;
1263         req.data.receive.connection_id = conn->conn_socket;
1264         req.data.receive.bhs = pdu->pdu_bhs;
1265         req.data.receive.data_segment_len =
1266             conn->conn_max_recv_data_segment_length;
1267         req.data.receive.data_segment = pdu->pdu_data;
1268
1269         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1270                 log_err(1, "error issuing CTL_ISCSI ioctl; "
1271                     "dropping connection");
1272         }
1273
1274         if (req.status != CTL_ISCSI_OK) {
1275                 log_errx(1, "error returned from CTL iSCSI receive: "
1276                     "%s; dropping connection", req.error_str);
1277         }
1278
1279 }
1280
1281 #endif /* ICL_KERNEL_PROXY */
1282
1283 /*
1284  * XXX: I CANT INTO LATIN
1285  */
1286 void
1287 kernel_capsicate(void)
1288 {
1289         int error;
1290         cap_rights_t rights;
1291         const unsigned long cmds[] = { CTL_ISCSI };
1292
1293         cap_rights_init(&rights, CAP_IOCTL);
1294         error = cap_rights_limit(ctl_fd, &rights);
1295         if (error != 0 && errno != ENOSYS)
1296                 log_err(1, "cap_rights_limit");
1297
1298         error = cap_ioctls_limit(ctl_fd, cmds, nitems(cmds));
1299
1300         if (error != 0 && errno != ENOSYS)
1301                 log_err(1, "cap_ioctls_limit");
1302
1303         error = cap_enter();
1304         if (error != 0 && errno != ENOSYS)
1305                 log_err(1, "cap_enter");
1306
1307         if (cap_sandboxed())
1308                 log_debugx("Capsicum capability mode enabled");
1309         else
1310                 log_warnx("Capsicum capability mode not supported");
1311 }
1312