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  * $FreeBSD$
  36  */
  37
  38 #include <sys/ioctl.h>
  39 #include <sys/types.h>
  40 #include <sys/stat.h>
  41 #include <sys/param.h>
  42 #include <sys/linker.h>
  43 #include <sys/queue.h>
  44 #include <sys/callout.h>
  45 #include <sys/sbuf.h>
  46 #include <sys/capability.h>
  47 #include <assert.h>
  48 #include <bsdxml.h>
  49 #include <ctype.h>
  50 #include <errno.h>
  51 #include <fcntl.h>
  52 #include <stdint.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <string.h>
  56 #include <strings.h>
  57 #include <cam/scsi/scsi_all.h>
  58 #include <cam/scsi/scsi_message.h>
  59 #include <cam/ctl/ctl.h>
  60 #include <cam/ctl/ctl_io.h>
  61 #include <cam/ctl/ctl_frontend_internal.h>
  62 #include <cam/ctl/ctl_backend.h>
  63 #include <cam/ctl/ctl_ioctl.h>
  64 #include <cam/ctl/ctl_backend_block.h>
  65 #include <cam/ctl/ctl_util.h>
  66 #include <cam/ctl/ctl_scsi_all.h>
  67
  68 #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 }
  95
  96 /*
  97  * Name/value pair used for per-LUN attributes.
  98  */
  99 struct cctl_lun_nv {
 100         char *name;
 101         char *value;
 102         STAILQ_ENTRY(cctl_lun_nv) links;
 103 };
 104
 105 /*
 106  * Backend LUN information.
 107  */
 108 struct cctl_lun {
 109         uint64_t lun_id;
 110         char *backend_type;
 111         uint64_t size_blocks;
 112         uint32_t blocksize;
 113         char *serial_number;
 114         char *device_id;
 115         char *cfiscsi_target;
 116         char *cfiscsi_target_alias;
 117         int cfiscsi_lun;
 118         STAILQ_HEAD(,cctl_lun_nv) attr_list;
 119         STAILQ_ENTRY(cctl_lun) links;
 120 };
 121
 122 struct cctl_port {
 123         uint32_t port_id;
 124         char *cfiscsi_target;
 125         uint16_t cfiscsi_portal_group_tag;
 126         STAILQ_HEAD(,cctl_lun_nv) attr_list;
 127         STAILQ_ENTRY(cctl_port) links;
 128 };
 129
 130 struct cctl_devlist_data {
 131         int num_luns;
 132         STAILQ_HEAD(,cctl_lun) lun_list;
 133         struct cctl_lun *cur_lun;
 134         int num_ports;
 135         STAILQ_HEAD(,cctl_port) port_list;
 136         struct cctl_port *cur_port;
 137         int level;
 138         struct sbuf *cur_sb[32];
 139 };
 140
 141 static void
 142 cctl_start_element(void *user_data, const char *name, const char **attr)
 143 {
 144         int i;
 145         struct cctl_devlist_data *devlist;
 146         struct cctl_lun *cur_lun;
 147
 148         devlist = (struct cctl_devlist_data *)user_data;
 149         cur_lun = devlist->cur_lun;
 150         devlist->level++;
 151         if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
 152             sizeof(devlist->cur_sb[0])))
 153                 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
 154                      sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
 155
 156         devlist->cur_sb[devlist->level] = sbuf_new_auto();
 157         if (devlist->cur_sb[devlist->level] == NULL)
 158                 log_err(1, "%s: unable to allocate sbuf", __func__);
 159
 160         if (strcmp(name, "lun") == 0) {
 161                 if (cur_lun != NULL)
 162                         log_errx(1, "%s: improper lun element nesting",
 163                             __func__);
 164
 165                 cur_lun = calloc(1, sizeof(*cur_lun));
 166                 if (cur_lun == NULL)
 167                         log_err(1, "%s: cannot allocate %zd bytes", __func__,
 168                             sizeof(*cur_lun));
 169
 170                 devlist->num_luns++;
 171                 devlist->cur_lun = cur_lun;
 172
 173                 STAILQ_INIT(&cur_lun->attr_list);
 174                 STAILQ_INSERT_TAIL(&devlist->lun_list, cur_lun, links);
 175
 176                 for (i = 0; attr[i] != NULL; i += 2) {
 177                         if (strcmp(attr[i], "id") == 0) {
 178                                 cur_lun->lun_id = strtoull(attr[i+1], NULL, 0);
 179                         } else {
 180                                 log_errx(1, "%s: invalid LUN attribute %s = %s",
 181                                      __func__, attr[i], attr[i+1]);
 182                         }
 183                 }
 184         }
 185 }
 186
 187 static void
 188 cctl_end_element(void *user_data, const char *name)
 189 {
 190         struct cctl_devlist_data *devlist;
 191         struct cctl_lun *cur_lun;
 192         char *str;
 193
 194         devlist = (struct cctl_devlist_data *)user_data;
 195         cur_lun = devlist->cur_lun;
 196
 197         if ((cur_lun == NULL)
 198          && (strcmp(name, "ctllunlist") != 0))
 199                 log_errx(1, "%s: cur_lun == NULL! (name = %s)", __func__, name);
 200
 201         if (devlist->cur_sb[devlist->level] == NULL)
 202                 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
 203                      devlist->level, name);
 204
 205         sbuf_finish(devlist->cur_sb[devlist->level]);
 206         str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
 207
 208         if (strlen(str) == 0) {
 209                 free(str);
 210                 str = NULL;
 211         }
 212
 213         sbuf_delete(devlist->cur_sb[devlist->level]);
 214         devlist->cur_sb[devlist->level] = NULL;
 215         devlist->level--;
 216
 217         if (strcmp(name, "backend_type") == 0) {
 218                 cur_lun->backend_type = str;
 219                 str = NULL;
 220         } else if (strcmp(name, "size") == 0) {
 221                 cur_lun->size_blocks = strtoull(str, NULL, 0);
 222         } else if (strcmp(name, "blocksize") == 0) {
 223                 cur_lun->blocksize = strtoul(str, NULL, 0);
 224         } else if (strcmp(name, "serial_number") == 0) {
 225                 cur_lun->serial_number = str;
 226                 str = NULL;
 227         } else if (strcmp(name, "device_id") == 0) {
 228                 cur_lun->device_id = str;
 229                 str = NULL;
 230         } else if (strcmp(name, "cfiscsi_target") == 0) {
 231                 cur_lun->cfiscsi_target = str;
 232                 str = NULL;
 233         } else if (strcmp(name, "cfiscsi_target_alias") == 0) {
 234                 cur_lun->cfiscsi_target_alias = str;
 235                 str = NULL;
 236         } else if (strcmp(name, "cfiscsi_lun") == 0) {
 237                 cur_lun->cfiscsi_lun = strtoul(str, NULL, 0);
 238         } else if (strcmp(name, "lun") == 0) {
 239                 devlist->cur_lun = NULL;
 240         } else if (strcmp(name, "ctllunlist") == 0) {
 241
 242         } else {
 243                 struct cctl_lun_nv *nv;
 244
 245                 nv = calloc(1, sizeof(*nv));
 246                 if (nv == NULL)
 247                         log_err(1, "%s: can't allocate %zd bytes for nv pair",
 248                             __func__, sizeof(*nv));
 249
 250                 nv->name = checked_strdup(name);
 251
 252                 nv->value = str;
 253                 str = NULL;
 254                 STAILQ_INSERT_TAIL(&cur_lun->attr_list, nv, links);
 255         }
 256
 257         free(str);
 258 }
 259
 260 static void
 261 cctl_start_pelement(void *user_data, const char *name, const char **attr)
 262 {
 263         int i;
 264         struct cctl_devlist_data *devlist;
 265         struct cctl_port *cur_port;
 266
 267         devlist = (struct cctl_devlist_data *)user_data;
 268         cur_port = devlist->cur_port;
 269         devlist->level++;
 270         if ((u_int)devlist->level >= (sizeof(devlist->cur_sb) /
 271             sizeof(devlist->cur_sb[0])))
 272                 log_errx(1, "%s: too many nesting levels, %zd max", __func__,
 273                      sizeof(devlist->cur_sb) / sizeof(devlist->cur_sb[0]));
 274
 275         devlist->cur_sb[devlist->level] = sbuf_new_auto();
 276         if (devlist->cur_sb[devlist->level] == NULL)
 277                 log_err(1, "%s: unable to allocate sbuf", __func__);
 278
 279         if (strcmp(name, "targ_port") == 0) {
 280                 if (cur_port != NULL)
 281                         log_errx(1, "%s: improper port element nesting (%s)",
 282                             __func__, name);
 283
 284                 cur_port = calloc(1, sizeof(*cur_port));
 285                 if (cur_port == NULL)
 286                         log_err(1, "%s: cannot allocate %zd bytes", __func__,
 287                             sizeof(*cur_port));
 288
 289                 devlist->num_ports++;
 290                 devlist->cur_port = cur_port;
 291
 292                 STAILQ_INIT(&cur_port->attr_list);
 293                 STAILQ_INSERT_TAIL(&devlist->port_list, cur_port, links);
 294
 295                 for (i = 0; attr[i] != NULL; i += 2) {
 296                         if (strcmp(attr[i], "id") == 0) {
 297                                 cur_port->port_id = strtoul(attr[i+1], NULL, 0);
 298                         } else {
 299                                 log_errx(1, "%s: invalid LUN attribute %s = %s",
 300                                      __func__, attr[i], attr[i+1]);
 301                         }
 302                 }
 303         }
 304 }
 305
 306 static void
 307 cctl_end_pelement(void *user_data, const char *name)
 308 {
 309         struct cctl_devlist_data *devlist;
 310         struct cctl_port *cur_port;
 311         char *str;
 312
 313         devlist = (struct cctl_devlist_data *)user_data;
 314         cur_port = devlist->cur_port;
 315
 316         if ((cur_port == NULL)
 317          && (strcmp(name, "ctlportlist") != 0))
 318                 log_errx(1, "%s: cur_port == NULL! (name = %s)", __func__, name);
 319
 320         if (devlist->cur_sb[devlist->level] == NULL)
 321                 log_errx(1, "%s: no valid sbuf at level %d (name %s)", __func__,
 322                      devlist->level, name);
 323
 324         sbuf_finish(devlist->cur_sb[devlist->level]);
 325         str = checked_strdup(sbuf_data(devlist->cur_sb[devlist->level]));
 326
 327         if (strlen(str) == 0) {
 328                 free(str);
 329                 str = NULL;
 330         }
 331
 332         sbuf_delete(devlist->cur_sb[devlist->level]);
 333         devlist->cur_sb[devlist->level] = NULL;
 334         devlist->level--;
 335
 336         if (strcmp(name, "cfiscsi_target") == 0) {
 337                 cur_port->cfiscsi_target = str;
 338                 str = NULL;
 339         } else if (strcmp(name, "cfiscsi_portal_group_tag") == 0) {
 340                 cur_port->cfiscsi_portal_group_tag = strtoul(str, NULL, 0);
 341         } else if (strcmp(name, "targ_port") == 0) {
 342                 devlist->cur_port = NULL;
 343         } else if (strcmp(name, "ctlportlist") == 0) {
 344
 345         } else {
 346                 struct cctl_lun_nv *nv;
 347
 348                 nv = calloc(1, sizeof(*nv));
 349                 if (nv == NULL)
 350                         log_err(1, "%s: can't allocate %zd bytes for nv pair",
 351                             __func__, sizeof(*nv));
 352
 353                 nv->name = checked_strdup(name);
 354
 355                 nv->value = str;
 356                 str = NULL;
 357                 STAILQ_INSERT_TAIL(&cur_port->attr_list, nv, links);
 358         }
 359
 360         free(str);
 361 }
 362
 363 static void
 364 cctl_char_handler(void *user_data, const XML_Char *str, int len)
 365 {
 366         struct cctl_devlist_data *devlist;
 367
 368         devlist = (struct cctl_devlist_data *)user_data;
 369
 370         sbuf_bcat(devlist->cur_sb[devlist->level], str, len);
 371 }
 372
 373 struct conf *
 374 conf_new_from_kernel(void)
 375 {
 376         struct conf *conf = NULL;
 377         struct target *targ;
 378         struct lun *cl;
 379         struct lun_option *lo;
 380         struct ctl_lun_list list;
 381         struct cctl_devlist_data devlist;
 382         struct cctl_lun *lun;
 383         struct cctl_port *port;
 384         XML_Parser parser;
 385         char *str;
 386         int len, retval;
 387
 388         bzero(&devlist, sizeof(devlist));
 389         STAILQ_INIT(&devlist.lun_list);
 390         STAILQ_INIT(&devlist.port_list);
 391
 392         log_debugx("obtaining previously configured CTL luns from the kernel");
 393
 394         str = NULL;
 395         len = 4096;
 396 retry:
 397         str = realloc(str, len);
 398         if (str == NULL)
 399                 log_err(1, "realloc");
 400
 401         bzero(&list, sizeof(list));
 402         list.alloc_len = len;
 403         list.status = CTL_LUN_LIST_NONE;
 404         list.lun_xml = str;
 405
 406         if (ioctl(ctl_fd, CTL_LUN_LIST, &list) == -1) {
 407                 log_warn("error issuing CTL_LUN_LIST ioctl");
 408                 free(str);
 409                 return (NULL);
 410         }
 411
 412         if (list.status == CTL_LUN_LIST_ERROR) {
 413                 log_warnx("error returned from CTL_LUN_LIST ioctl: %s",
 414                     list.error_str);
 415                 free(str);
 416                 return (NULL);
 417         }
 418
 419         if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
 420                 len = len << 1;
 421                 goto retry;
 422         }
 423
 424         parser = XML_ParserCreate(NULL);
 425         if (parser == NULL) {
 426                 log_warnx("unable to create XML parser");
 427                 free(str);
 428                 return (NULL);
 429         }
 430
 431         XML_SetUserData(parser, &devlist);
 432         XML_SetElementHandler(parser, cctl_start_element, cctl_end_element);
 433         XML_SetCharacterDataHandler(parser, cctl_char_handler);
 434
 435         retval = XML_Parse(parser, str, strlen(str), 1);
 436         XML_ParserFree(parser);
 437         free(str);
 438         if (retval != 1) {
 439                 log_warnx("XML_Parse failed");
 440                 return (NULL);
 441         }
 442
 443         str = NULL;
 444         len = 4096;
 445 retry_port:
 446         str = realloc(str, len);
 447         if (str == NULL)
 448                 log_err(1, "realloc");
 449
 450         bzero(&list, sizeof(list));
 451         list.alloc_len = len;
 452         list.status = CTL_LUN_LIST_NONE;
 453         list.lun_xml = str;
 454
 455         if (ioctl(ctl_fd, CTL_PORT_LIST, &list) == -1) {
 456                 log_warn("error issuing CTL_PORT_LIST ioctl");
 457                 free(str);
 458                 return (NULL);
 459         }
 460
 461         if (list.status == CTL_PORT_LIST_ERROR) {
 462                 log_warnx("error returned from CTL_PORT_LIST ioctl: %s",
 463                     list.error_str);
 464                 free(str);
 465                 return (NULL);
 466         }
 467
 468         if (list.status == CTL_LUN_LIST_NEED_MORE_SPACE) {
 469                 len = len << 1;
 470                 goto retry_port;
 471         }
 472
 473         parser = XML_ParserCreate(NULL);
 474         if (parser == NULL) {
 475                 log_warnx("unable to create XML parser");
 476                 free(str);
 477                 return (NULL);
 478         }
 479
 480         XML_SetUserData(parser, &devlist);
 481         XML_SetElementHandler(parser, cctl_start_pelement, cctl_end_pelement);
 482         XML_SetCharacterDataHandler(parser, cctl_char_handler);
 483
 484         retval = XML_Parse(parser, str, strlen(str), 1);
 485         XML_ParserFree(parser);
 486         free(str);
 487         if (retval != 1) {
 488                 log_warnx("XML_Parse failed");
 489                 return (NULL);
 490         }
 491
 492         conf = conf_new();
 493
 494         STAILQ_FOREACH(port, &devlist.port_list, links) {
 495
 496                 if (port->cfiscsi_target == NULL) {
 497                         log_debugx("CTL port %ju wasn't managed by ctld; "
 498                             "ignoring", (uintmax_t)port->port_id);
 499                         continue;
 500                 }
 501
 502                 targ = target_find(conf, port->cfiscsi_target);
 503                 if (targ == NULL) {
 504 #if 0
 505                         log_debugx("found new kernel target %s for CTL port %ld",
 506                             port->cfiscsi_target, port->port_id);
 507 #endif
 508                         targ = target_new(conf, port->cfiscsi_target);
 509                         if (targ == NULL) {
 510                                 log_warnx("target_new failed");
 511                                 continue;
 512                         }
 513                 }
 514         }
 515
 516         STAILQ_FOREACH(lun, &devlist.lun_list, links) {
 517                 struct cctl_lun_nv *nv;
 518
 519                 if (lun->cfiscsi_target == NULL) {
 520                         log_debugx("CTL lun %ju wasn't managed by ctld; "
 521                             "ignoring", (uintmax_t)lun->lun_id);
 522                         continue;
 523                 }
 524
 525                 targ = target_find(conf, lun->cfiscsi_target);
 526                 if (targ == NULL) {
 527 #if 0
 528                         log_debugx("found new kernel target %s for CTL lun %ld",
 529                             lun->cfiscsi_target, lun->lun_id);
 530 #endif
 531                         targ = target_new(conf, lun->cfiscsi_target);
 532                         if (targ == NULL) {
 533                                 log_warnx("target_new failed");
 534                                 continue;
 535                         }
 536                 }
 537
 538                 cl = lun_find(targ, lun->cfiscsi_lun);
 539                 if (cl != NULL) {
 540                         log_warnx("found CTL lun %ju, backing lun %d, target "
 541                             "%s, also backed by CTL lun %d; ignoring",
 542                             (uintmax_t) lun->lun_id, cl->l_lun,
 543                             cl->l_target->t_name, cl->l_ctl_lun);
 544                         continue;
 545                 }
 546
 547                 log_debugx("found CTL lun %ju, backing lun %d, target %s",
 548                     (uintmax_t)lun->lun_id, lun->cfiscsi_lun, lun->cfiscsi_target);
 549
 550                 cl = lun_new(targ, lun->cfiscsi_lun);
 551                 if (cl == NULL) {
 552                         log_warnx("lun_new failed");
 553                         continue;
 554                 }
 555                 lun_set_backend(cl, lun->backend_type);
 556                 lun_set_blocksize(cl, lun->blocksize);
 557                 lun_set_device_id(cl, lun->device_id);
 558                 lun_set_serial(cl, lun->serial_number);
 559                 lun_set_size(cl, lun->size_blocks * cl->l_blocksize);
 560                 lun_set_ctl_lun(cl, lun->lun_id);
 561
 562                 STAILQ_FOREACH(nv, &lun->attr_list, links) {
 563                         if (strcmp(nv->name, "file") == 0 ||
 564                             strcmp(nv->name, "dev") == 0) {
 565                                 lun_set_path(cl, nv->value);
 566                                 continue;
 567                         }
 568                         lo = lun_option_new(cl, nv->name, nv->value);
 569                         if (lo == NULL)
 570                                 log_warnx("unable to add CTL lun option %s "
 571                                     "for CTL lun %ju for lun %d, target %s",
 572                                     nv->name, (uintmax_t) lun->lun_id,
 573                                     cl->l_lun, cl->l_target->t_name);
 574                 }
 575         }
 576
 577         return (conf);
 578 }
 579
 580 static void
 581 str_arg(struct ctl_be_arg *arg, const char *name, const char *value)
 582 {
 583
 584         arg->namelen = strlen(name) + 1;
 585         arg->name = __DECONST(char *, name);
 586         arg->vallen = strlen(value) + 1;
 587         arg->value = __DECONST(char *, value);
 588         arg->flags = CTL_BEARG_ASCII | CTL_BEARG_RD;
 589 }
 590
 591 int
 592 kernel_lun_add(struct lun *lun)
 593 {
 594         struct lun_option *lo;
 595         struct ctl_lun_req req;
 596         char *tmp;
 597         int error, i, num_options;
 598
 599         bzero(&req, sizeof(req));
 600
 601         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 602         req.reqtype = CTL_LUNREQ_CREATE;
 603
 604         req.reqdata.create.blocksize_bytes = lun->l_blocksize;
 605
 606         if (lun->l_size != 0)
 607                 req.reqdata.create.lun_size_bytes = lun->l_size;
 608
 609         req.reqdata.create.flags |= CTL_LUN_FLAG_DEV_TYPE;
 610         req.reqdata.create.device_type = T_DIRECT;
 611
 612         if (lun->l_serial != NULL) {
 613                 strncpy(req.reqdata.create.serial_num, lun->l_serial,
 614                         sizeof(req.reqdata.create.serial_num));
 615                 req.reqdata.create.flags |= CTL_LUN_FLAG_SERIAL_NUM;
 616         }
 617
 618         if (lun->l_device_id != NULL) {
 619                 strncpy(req.reqdata.create.device_id, lun->l_device_id,
 620                         sizeof(req.reqdata.create.device_id));
 621                 req.reqdata.create.flags |= CTL_LUN_FLAG_DEVID;
 622         }
 623
 624         if (lun->l_path != NULL) {
 625                 lo = lun_option_find(lun, "file");
 626                 if (lo != NULL) {
 627                         lun_option_set(lo, lun->l_path);
 628                 } else {
 629                         lo = lun_option_new(lun, "file", lun->l_path);
 630                         assert(lo != NULL);
 631                 }
 632         }
 633
 634         lo = lun_option_find(lun, "cfiscsi_target");
 635         if (lo != NULL) {
 636                 lun_option_set(lo, lun->l_target->t_name);
 637         } else {
 638                 lo = lun_option_new(lun, "cfiscsi_target",
 639                     lun->l_target->t_name);
 640                 assert(lo != NULL);
 641         }
 642
 643         if (lun->l_target->t_alias != NULL) {
 644                 lo = lun_option_find(lun, "cfiscsi_target_alias");
 645                 if (lo != NULL) {
 646                         lun_option_set(lo, lun->l_target->t_alias);
 647                 } else {
 648                         lo = lun_option_new(lun, "cfiscsi_target_alias",
 649                             lun->l_target->t_alias);
 650                         assert(lo != NULL);
 651                 }
 652         }
 653
 654         asprintf(&tmp, "%d", lun->l_lun);
 655         if (tmp == NULL)
 656                 log_errx(1, "asprintf");
 657         lo = lun_option_find(lun, "cfiscsi_lun");
 658         if (lo != NULL) {
 659                 lun_option_set(lo, tmp);
 660                 free(tmp);
 661         } else {
 662                 lo = lun_option_new(lun, "cfiscsi_lun", tmp);
 663                 free(tmp);
 664                 assert(lo != NULL);
 665         }
 666
 667         num_options = 0;
 668         TAILQ_FOREACH(lo, &lun->l_options, lo_next)
 669                 num_options++;
 670
 671         req.num_be_args = num_options;
 672         if (num_options > 0) {
 673                 req.be_args = malloc(num_options * sizeof(*req.be_args));
 674                 if (req.be_args == NULL) {
 675                         log_warn("error allocating %zd bytes",
 676                             num_options * sizeof(*req.be_args));
 677                         return (1);
 678                 }
 679
 680                 i = 0;
 681                 TAILQ_FOREACH(lo, &lun->l_options, lo_next) {
 682                         str_arg(&req.be_args[i], lo->lo_name, lo->lo_value);
 683                         i++;
 684                 }
 685                 assert(i == num_options);
 686         }
 687
 688         error = ioctl(ctl_fd, CTL_LUN_REQ, &req);
 689         free(req.be_args);
 690         if (error != 0) {
 691                 log_warn("error issuing CTL_LUN_REQ ioctl");
 692                 return (1);
 693         }
 694
 695         if (req.status == CTL_LUN_ERROR) {
 696                 log_warnx("error returned from LUN creation request: %s",
 697                     req.error_str);
 698                 return (1);
 699         }
 700
 701         if (req.status != CTL_LUN_OK) {
 702                 log_warnx("unknown LUN creation request status %d",
 703                     req.status);
 704                 return (1);
 705         }
 706
 707         lun_set_ctl_lun(lun, req.reqdata.create.req_lun_id);
 708
 709         return (0);
 710 }
 711
 712 int
 713 kernel_lun_resize(struct lun *lun)
 714 {
 715         struct ctl_lun_req req;
 716
 717         bzero(&req, sizeof(req));
 718
 719         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 720         req.reqtype = CTL_LUNREQ_MODIFY;
 721
 722         req.reqdata.modify.lun_id = lun->l_ctl_lun;
 723         req.reqdata.modify.lun_size_bytes = lun->l_size;
 724
 725         if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) {
 726                 log_warn("error issuing CTL_LUN_REQ ioctl");
 727                 return (1);
 728         }
 729
 730         if (req.status == CTL_LUN_ERROR) {
 731                 log_warnx("error returned from LUN modification request: %s",
 732                     req.error_str);
 733                 return (1);
 734         }
 735
 736         if (req.status != CTL_LUN_OK) {
 737                 log_warnx("unknown LUN modification request status %d",
 738                     req.status);
 739                 return (1);
 740         }
 741
 742         return (0);
 743 }
 744
 745 int
 746 kernel_lun_remove(struct lun *lun)
 747 {
 748         struct ctl_lun_req req;
 749
 750         bzero(&req, sizeof(req));
 751
 752         strlcpy(req.backend, lun->l_backend, sizeof(req.backend));
 753         req.reqtype = CTL_LUNREQ_RM;
 754
 755         req.reqdata.rm.lun_id = lun->l_ctl_lun;
 756
 757         if (ioctl(ctl_fd, CTL_LUN_REQ, &req) == -1) {
 758                 log_warn("error issuing CTL_LUN_REQ ioctl");
 759                 return (1);
 760         }
 761
 762         if (req.status == CTL_LUN_ERROR) {
 763                 log_warnx("error returned from LUN removal request: %s",
 764                     req.error_str);
 765                 return (1);
 766         }
 767
 768         if (req.status != CTL_LUN_OK) {
 769                 log_warnx("unknown LUN removal request status %d", req.status);
 770                 return (1);
 771         }
 772
 773         return (0);
 774 }
 775
 776 void
 777 kernel_handoff(struct connection *conn)
 778 {
 779         struct ctl_iscsi req;
 780
 781         bzero(&req, sizeof(req));
 782
 783         req.type = CTL_ISCSI_HANDOFF;
 784         strlcpy(req.data.handoff.initiator_name,
 785             conn->conn_initiator_name, sizeof(req.data.handoff.initiator_name));
 786         strlcpy(req.data.handoff.initiator_addr,
 787             conn->conn_initiator_addr, sizeof(req.data.handoff.initiator_addr));
 788         if (conn->conn_initiator_alias != NULL) {
 789                 strlcpy(req.data.handoff.initiator_alias,
 790                     conn->conn_initiator_alias, sizeof(req.data.handoff.initiator_alias));
 791         }
 792         strlcpy(req.data.handoff.target_name,
 793             conn->conn_target->t_name, sizeof(req.data.handoff.target_name));
 794 #ifdef ICL_KERNEL_PROXY
 795         if (proxy_mode)
 796                 req.data.handoff.connection_id = conn->conn_socket;
 797         else
 798                 req.data.handoff.socket = conn->conn_socket;
 799 #else
 800         req.data.handoff.socket = conn->conn_socket;
 801 #endif
 802         req.data.handoff.portal_group_tag =
 803             conn->conn_portal->p_portal_group->pg_tag;
 804         if (conn->conn_header_digest == CONN_DIGEST_CRC32C)
 805                 req.data.handoff.header_digest = CTL_ISCSI_DIGEST_CRC32C;
 806         if (conn->conn_data_digest == CONN_DIGEST_CRC32C)
 807                 req.data.handoff.data_digest = CTL_ISCSI_DIGEST_CRC32C;
 808         req.data.handoff.cmdsn = conn->conn_cmdsn;
 809         req.data.handoff.statsn = conn->conn_statsn;
 810         req.data.handoff.max_recv_data_segment_length =
 811             conn->conn_max_data_segment_length;
 812         req.data.handoff.max_burst_length = conn->conn_max_burst_length;
 813         req.data.handoff.immediate_data = conn->conn_immediate_data;
 814
 815         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
 816                 log_err(1, "error issuing CTL_ISCSI ioctl; "
 817                     "dropping connection");
 818         }
 819
 820         if (req.status != CTL_ISCSI_OK) {
 821                 log_errx(1, "error returned from CTL iSCSI handoff request: "
 822                     "%s; dropping connection", req.error_str);
 823         }
 824 }
 825
 826 int
 827 kernel_port_add(struct target *targ)
 828 {
 829         struct ctl_port_entry entry;
 830         struct ctl_req req;
 831         char tagstr[16];
 832         int error;
 833         uint32_t port_id = -1;
 834
 835         bzero(&req, sizeof(req));
 836         strlcpy(req.driver, "iscsi", sizeof(req.driver));
 837         req.reqtype = CTL_REQ_CREATE;
 838         req.num_args = 4;
 839         req.args = malloc(req.num_args * sizeof(*req.args));
 840         req.args[0].namelen = sizeof("port_id");
 841         req.args[0].name = __DECONST(char *, "port_id");
 842         req.args[0].vallen = sizeof(port_id);
 843         req.args[0].value = &port_id;
 844         req.args[0].flags = CTL_BEARG_WR;
 845         str_arg(&req.args[1], "cfiscsi_target", targ->t_name);
 846         str_arg(&req.args[2], "cfiscsi_target_alias", targ->t_alias);
 847         snprintf(tagstr, sizeof(tagstr), "%d", targ->t_portal_group->pg_tag);
 848         str_arg(&req.args[3], "cfiscsi_portal_group_tag", tagstr);
 849
 850         error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
 851         free(req.args);
 852         if (error != 0) {
 853                 log_warn("error issuing CTL_PORT_REQ ioctl");
 854                 return (1);
 855         }
 856
 857         if (req.status == CTL_LUN_ERROR) {
 858                 log_warnx("error returned from port creation request: %s",
 859                     req.error_str);
 860                 return (1);
 861         }
 862
 863         if (req.status != CTL_LUN_OK) {
 864                 log_warnx("unknown port creation request status %d",
 865                     req.status);
 866                 return (1);
 867         }
 868
 869         bzero(&entry, sizeof(entry));
 870         entry.targ_port = port_id;
 871
 872         error = ioctl(ctl_fd, CTL_ENABLE_PORT, &entry);
 873         if (error != 0) {
 874                 log_warn("CTL_ENABLE_PORT ioctl failed");
 875                 return (-1);
 876         }
 877
 878         return (0);
 879 }
 880
 881 int
 882 kernel_port_remove(struct target *targ)
 883 {
 884         struct ctl_req req;
 885         char tagstr[16];
 886         int error;
 887
 888         bzero(&req, sizeof(req));
 889         strlcpy(req.driver, "iscsi", sizeof(req.driver));
 890         req.reqtype = CTL_REQ_REMOVE;
 891         req.num_args = 2;
 892         req.args = malloc(req.num_args * sizeof(*req.args));
 893         str_arg(&req.args[0], "cfiscsi_target", targ->t_name);
 894         if (targ->t_portal_group) {
 895                 snprintf(tagstr, sizeof(tagstr), "%d",
 896                     targ->t_portal_group->pg_tag);
 897                 str_arg(&req.args[1], "cfiscsi_portal_group_tag", tagstr);
 898         } else
 899                 req.num_args--;
 900
 901         error = ioctl(ctl_fd, CTL_PORT_REQ, &req);
 902         free(req.args);
 903         if (error != 0) {
 904                 log_warn("error issuing CTL_PORT_REQ ioctl");
 905                 return (1);
 906         }
 907
 908         if (req.status == CTL_LUN_ERROR) {
 909                 log_warnx("error returned from port removal request: %s",
 910                     req.error_str);
 911                 return (1);
 912         }
 913
 914         if (req.status != CTL_LUN_OK) {
 915                 log_warnx("unknown port removal request status %d",
 916                     req.status);
 917                 return (1);
 918         }
 919
 920         return (0);
 921 }
 922
 923 #ifdef ICL_KERNEL_PROXY
 924 void
 925 kernel_listen(struct addrinfo *ai, bool iser, int portal_id)
 926 {
 927         struct ctl_iscsi req;
 928
 929         bzero(&req, sizeof(req));
 930
 931         req.type = CTL_ISCSI_LISTEN;
 932         req.data.listen.iser = iser;
 933         req.data.listen.domain = ai->ai_family;
 934         req.data.listen.socktype = ai->ai_socktype;
 935         req.data.listen.protocol = ai->ai_protocol;
 936         req.data.listen.addr = ai->ai_addr;
 937         req.data.listen.addrlen = ai->ai_addrlen;
 938         req.data.listen.portal_id = portal_id;
 939
 940         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
 941                 log_err(1, "error issuing CTL_ISCSI ioctl");
 942
 943         if (req.status != CTL_ISCSI_OK) {
 944                 log_errx(1, "error returned from CTL iSCSI listen: %s",
 945                     req.error_str);
 946         }
 947 }
 948
 949 void
 950 kernel_accept(int *connection_id, int *portal_id,
 951     struct sockaddr *client_sa, socklen_t *client_salen)
 952 {
 953         struct ctl_iscsi req;
 954         struct sockaddr_storage ss;
 955
 956         bzero(&req, sizeof(req));
 957
 958         req.type = CTL_ISCSI_ACCEPT;
 959         req.data.accept.initiator_addr = (struct sockaddr *)&ss;
 960
 961         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1)
 962                 log_err(1, "error issuing CTL_ISCSI ioctl");
 963
 964         if (req.status != CTL_ISCSI_OK) {
 965                 log_errx(1, "error returned from CTL iSCSI accept: %s",
 966                     req.error_str);
 967         }
 968
 969         *connection_id = req.data.accept.connection_id;
 970         *portal_id = req.data.accept.portal_id;
 971         *client_salen = req.data.accept.initiator_addrlen;
 972         memcpy(client_sa, &ss, *client_salen);
 973 }
 974
 975 void
 976 kernel_send(struct pdu *pdu)
 977 {
 978         struct ctl_iscsi req;
 979
 980         bzero(&req, sizeof(req));
 981
 982         req.type = CTL_ISCSI_SEND;
 983         req.data.send.connection_id = pdu->pdu_connection->conn_socket;
 984         req.data.send.bhs = pdu->pdu_bhs;
 985         req.data.send.data_segment_len = pdu->pdu_data_len;
 986         req.data.send.data_segment = pdu->pdu_data;
 987
 988         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
 989                 log_err(1, "error issuing CTL_ISCSI ioctl; "
 990                     "dropping connection");
 991         }
 992
 993         if (req.status != CTL_ISCSI_OK) {
 994                 log_errx(1, "error returned from CTL iSCSI send: "
 995                     "%s; dropping connection", req.error_str);
 996         }
 997 }
 998
 999 void
1000 kernel_receive(struct pdu *pdu)
1001 {
1002         struct ctl_iscsi req;
1003
1004         pdu->pdu_data = malloc(MAX_DATA_SEGMENT_LENGTH);
1005         if (pdu->pdu_data == NULL)
1006                 log_err(1, "malloc");
1007
1008         bzero(&req, sizeof(req));
1009
1010         req.type = CTL_ISCSI_RECEIVE;
1011         req.data.receive.connection_id = pdu->pdu_connection->conn_socket;
1012         req.data.receive.bhs = pdu->pdu_bhs;
1013         req.data.receive.data_segment_len = MAX_DATA_SEGMENT_LENGTH;
1014         req.data.receive.data_segment = pdu->pdu_data;
1015
1016         if (ioctl(ctl_fd, CTL_ISCSI, &req) == -1) {
1017                 log_err(1, "error issuing CTL_ISCSI ioctl; "
1018                     "dropping connection");
1019         }
1020
1021         if (req.status != CTL_ISCSI_OK) {
1022                 log_errx(1, "error returned from CTL iSCSI receive: "
1023                     "%s; dropping connection", req.error_str);
1024         }
1025
1026 }
1027
1028 #endif /* ICL_KERNEL_PROXY */
1029
1030 /*
1031  * XXX: I CANT INTO LATIN
1032  */
1033 void
1034 kernel_capsicate(void)
1035 {
1036         int error;
1037         cap_rights_t rights;
1038         const unsigned long cmds[] = { CTL_ISCSI };
1039
1040         cap_rights_init(&rights, CAP_IOCTL);
1041         error = cap_rights_limit(ctl_fd, &rights);
1042         if (error != 0 && errno != ENOSYS)
1043                 log_err(1, "cap_rights_limit");
1044
1045         error = cap_ioctls_limit(ctl_fd, cmds,
1046             sizeof(cmds) / sizeof(cmds[0]));
1047         if (error != 0 && errno != ENOSYS)
1048                 log_err(1, "cap_ioctls_limit");
1049
1050         error = cap_enter();
1051         if (error != 0 && errno != ENOSYS)
1052                 log_err(1, "cap_enter");
1053
1054         if (cap_sandboxed())
1055                 log_debugx("Capsicum capability mode enabled");
1056         else
1057                 log_warnx("Capsicum capability mode not supported");
1058 }
1059