1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * 6 * This software was developed by Edward Tomasz Napierala under sponsorship 7 * from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32#include <sys/cdefs.h> 33#include <sys/ioctl.h> 34#include <sys/param.h> 35#include <sys/linker.h> 36#include <assert.h> 37#include <ctype.h> 38#include <errno.h> 39#include <fcntl.h> 40#include <limits.h> 41#include <stdio.h> 42#include <stdlib.h> 43#include <string.h> 44#include <unistd.h> 45#include <libxo/xo.h> 46 47#include <iscsi_ioctl.h> 48#include "iscsictl.h" 49 50struct conf * 51conf_new(void) 52{ 53 struct conf *conf; 54 55 conf = calloc(1, sizeof(*conf)); 56 if (conf == NULL) 57 xo_err(1, "calloc"); 58 59 TAILQ_INIT(&conf->conf_targets); 60 61 return (conf); 62} 63 64struct target * 65target_find(struct conf *conf, const char *nickname) 66{ 67 struct target *targ; 68 69 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) { 70 if (targ->t_nickname != NULL && 71 strcasecmp(targ->t_nickname, nickname) == 0) 72 return (targ); 73 } 74 75 return (NULL); 76} 77 78struct target * 79target_new(struct conf *conf) 80{ 81 struct target *targ; 82 83 targ = calloc(1, sizeof(*targ)); 84 if (targ == NULL) 85 xo_err(1, "calloc"); 86 targ->t_conf = conf; 87 targ->t_dscp = -1; 88 targ->t_pcp = -1; 89 targ->t_pingtimeout = -1; 90 targ->t_logintimeout = -1; 91 TAILQ_INSERT_TAIL(&conf->conf_targets, targ, t_next); 92 93 return (targ); 94} 95 96void 97target_delete(struct target *targ) 98{ 99 100 TAILQ_REMOVE(&targ->t_conf->conf_targets, targ, t_next); 101 free(targ); 102} 103 104static char * 105default_initiator_name(void) 106{ 107 char *name; 108 size_t namelen; 109 int error; 110 111 namelen = _POSIX_HOST_NAME_MAX + strlen(DEFAULT_IQN); 112 113 name = calloc(1, namelen + 1); 114 if (name == NULL) 115 xo_err(1, "calloc"); 116 strcpy(name, DEFAULT_IQN); 117 error = gethostname(name + strlen(DEFAULT_IQN), 118 namelen - strlen(DEFAULT_IQN)); 119 if (error != 0) 120 xo_err(1, "gethostname"); 121 122 return (name); 123} 124 125static bool 126valid_hex(const char ch) 127{ 128 switch (ch) { 129 case '0': 130 case '1': 131 case '2': 132 case '3': 133 case '4': 134 case '5': 135 case '6': 136 case '7': 137 case '8': 138 case '9': 139 case 'a': 140 case 'A': 141 case 'b': 142 case 'B': 143 case 'c': 144 case 'C': 145 case 'd': 146 case 'D': 147 case 'e': 148 case 'E': 149 case 'f': 150 case 'F': 151 return (true); 152 default: 153 return (false); 154 } 155} 156 157int 158parse_enable(const char *enable) 159{ 160 if (enable == NULL) 161 return (ENABLE_UNSPECIFIED); 162 163 if (strcasecmp(enable, "on") == 0 || 164 strcasecmp(enable, "yes") == 0) 165 return (ENABLE_ON); 166 167 if (strcasecmp(enable, "off") == 0 || 168 strcasecmp(enable, "no") == 0) 169 return (ENABLE_OFF); 170 171 return (ENABLE_UNSPECIFIED); 172} 173 174bool 175valid_iscsi_name(const char *name) 176{ 177 int i; 178 179 if (strlen(name) >= MAX_NAME_LEN) { 180 xo_warnx("overlong name for \"%s\"; max length allowed " 181 "by iSCSI specification is %d characters", 182 name, MAX_NAME_LEN); 183 return (false); 184 } 185 186 /* 187 * In the cases below, we don't return an error, just in case the admin 188 * was right, and we're wrong. 189 */ 190 if (strncasecmp(name, "iqn.", strlen("iqn.")) == 0) { 191 for (i = strlen("iqn."); name[i] != '\0'; i++) { 192 /* 193 * XXX: We should verify UTF-8 normalisation, as defined 194 * by 3.2.6.2: iSCSI Name Encoding. 195 */ 196 if (isalnum(name[i])) 197 continue; 198 if (name[i] == '-' || name[i] == '.' || name[i] == ':') 199 continue; 200 xo_warnx("invalid character \"%c\" in iSCSI name " 201 "\"%s\"; allowed characters are letters, digits, " 202 "'-', '.', and ':'", name[i], name); 203 break; 204 } 205 /* 206 * XXX: Check more stuff: valid date and a valid reversed domain. 207 */ 208 } else if (strncasecmp(name, "eui.", strlen("eui.")) == 0) { 209 if (strlen(name) != strlen("eui.") + 16) 210 xo_warnx("invalid iSCSI name \"%s\"; the \"eui.\" " 211 "should be followed by exactly 16 hexadecimal " 212 "digits", name); 213 for (i = strlen("eui."); name[i] != '\0'; i++) { 214 if (!valid_hex(name[i])) { 215 xo_warnx("invalid character \"%c\" in iSCSI " 216 "name \"%s\"; allowed characters are 1-9 " 217 "and A-F", name[i], name); 218 break; 219 } 220 } 221 } else if (strncasecmp(name, "naa.", strlen("naa.")) == 0) { 222 if (strlen(name) > strlen("naa.") + 32) 223 xo_warnx("invalid iSCSI name \"%s\"; the \"naa.\" " 224 "should be followed by at most 32 hexadecimal " 225 "digits", name); 226 for (i = strlen("naa."); name[i] != '\0'; i++) { 227 if (!valid_hex(name[i])) { 228 xo_warnx("invalid character \"%c\" in ISCSI " 229 "name \"%s\"; allowed characters are 1-9 " 230 "and A-F", name[i], name); 231 break; 232 } 233 } 234 } else { 235 xo_warnx("invalid iSCSI name \"%s\"; should start with " 236 "either \".iqn\", \"eui.\", or \"naa.\"", 237 name); 238 } 239 return (true); 240} 241 242void 243conf_verify(struct conf *conf) 244{ 245 struct target *targ; 246 247 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) { 248 assert(targ->t_nickname != NULL); 249 if (targ->t_session_type == SESSION_TYPE_UNSPECIFIED) 250 targ->t_session_type = SESSION_TYPE_NORMAL; 251 if (targ->t_session_type == SESSION_TYPE_NORMAL && 252 targ->t_name == NULL) 253 xo_errx(1, "missing TargetName for target \"%s\"", 254 targ->t_nickname); 255 if (targ->t_session_type == SESSION_TYPE_DISCOVERY && 256 targ->t_name != NULL) 257 xo_errx(1, "cannot specify TargetName for discovery " 258 "sessions for target \"%s\"", targ->t_nickname); 259 if (targ->t_name != NULL) { 260 if (valid_iscsi_name(targ->t_name) == false) 261 xo_errx(1, "invalid target name \"%s\"", 262 targ->t_name); 263 } 264 if (targ->t_protocol == PROTOCOL_UNSPECIFIED) 265 targ->t_protocol = PROTOCOL_ISCSI; 266 if (targ->t_address == NULL) 267 xo_errx(1, "missing TargetAddress for target \"%s\"", 268 targ->t_nickname); 269 if (targ->t_initiator_name == NULL) 270 targ->t_initiator_name = default_initiator_name(); 271 if (valid_iscsi_name(targ->t_initiator_name) == false) 272 xo_errx(1, "invalid initiator name \"%s\"", 273 targ->t_initiator_name); 274 if (targ->t_header_digest == DIGEST_UNSPECIFIED) 275 targ->t_header_digest = DIGEST_NONE; 276 if (targ->t_data_digest == DIGEST_UNSPECIFIED) 277 targ->t_data_digest = DIGEST_NONE; 278 if (targ->t_auth_method == AUTH_METHOD_UNSPECIFIED) { 279 if (targ->t_user != NULL || targ->t_secret != NULL || 280 targ->t_mutual_user != NULL || 281 targ->t_mutual_secret != NULL) 282 targ->t_auth_method = 283 AUTH_METHOD_CHAP; 284 else 285 targ->t_auth_method = 286 AUTH_METHOD_NONE; 287 } 288 if (targ->t_auth_method == AUTH_METHOD_CHAP) { 289 if (targ->t_user == NULL) { 290 xo_errx(1, "missing chapIName for target \"%s\"", 291 targ->t_nickname); 292 } 293 if (targ->t_secret == NULL) 294 xo_errx(1, "missing chapSecret for target \"%s\"", 295 targ->t_nickname); 296 if (targ->t_mutual_user != NULL || 297 targ->t_mutual_secret != NULL) { 298 if (targ->t_mutual_user == NULL) 299 xo_errx(1, "missing tgtChapName for " 300 "target \"%s\"", targ->t_nickname); 301 if (targ->t_mutual_secret == NULL) 302 xo_errx(1, "missing tgtChapSecret for " 303 "target \"%s\"", targ->t_nickname); 304 } 305 } 306 } 307} 308 309static void 310conf_from_target(struct iscsi_session_conf *conf, 311 const struct target *targ) 312{ 313 memset(conf, 0, sizeof(*conf)); 314 315 /* 316 * XXX: Check bounds and return error instead of silently truncating. 317 */ 318 if (targ->t_initiator_name != NULL) 319 strlcpy(conf->isc_initiator, targ->t_initiator_name, 320 sizeof(conf->isc_initiator)); 321 if (targ->t_initiator_address != NULL) 322 strlcpy(conf->isc_initiator_addr, targ->t_initiator_address, 323 sizeof(conf->isc_initiator_addr)); 324 if (targ->t_initiator_alias != NULL) 325 strlcpy(conf->isc_initiator_alias, targ->t_initiator_alias, 326 sizeof(conf->isc_initiator_alias)); 327 if (targ->t_name != NULL) 328 strlcpy(conf->isc_target, targ->t_name, 329 sizeof(conf->isc_target)); 330 if (targ->t_address != NULL) 331 strlcpy(conf->isc_target_addr, targ->t_address, 332 sizeof(conf->isc_target_addr)); 333 if (targ->t_user != NULL) 334 strlcpy(conf->isc_user, targ->t_user, 335 sizeof(conf->isc_user)); 336 if (targ->t_secret != NULL) 337 strlcpy(conf->isc_secret, targ->t_secret, 338 sizeof(conf->isc_secret)); 339 if (targ->t_mutual_user != NULL) 340 strlcpy(conf->isc_mutual_user, targ->t_mutual_user, 341 sizeof(conf->isc_mutual_user)); 342 if (targ->t_mutual_secret != NULL) 343 strlcpy(conf->isc_mutual_secret, targ->t_mutual_secret, 344 sizeof(conf->isc_mutual_secret)); 345 if (targ->t_session_type == SESSION_TYPE_DISCOVERY) 346 conf->isc_discovery = 1; 347 if (targ->t_enable != ENABLE_OFF) 348 conf->isc_enable = 1; 349 if (targ->t_protocol == PROTOCOL_ISER) 350 conf->isc_iser = 1; 351 if (targ->t_offload != NULL) 352 strlcpy(conf->isc_offload, targ->t_offload, 353 sizeof(conf->isc_offload)); 354 if (targ->t_header_digest == DIGEST_CRC32C) 355 conf->isc_header_digest = ISCSI_DIGEST_CRC32C; 356 else 357 conf->isc_header_digest = ISCSI_DIGEST_NONE; 358 if (targ->t_data_digest == DIGEST_CRC32C) 359 conf->isc_data_digest = ISCSI_DIGEST_CRC32C; 360 else 361 conf->isc_data_digest = ISCSI_DIGEST_NONE; 362 conf->isc_dscp = targ->t_dscp; 363 conf->isc_pcp = targ->t_pcp; 364 conf->isc_ping_timeout = targ->t_pingtimeout; 365 conf->isc_login_timeout = targ->t_logintimeout; 366} 367 368static int 369kernel_add(int iscsi_fd, const struct target *targ) 370{ 371 struct iscsi_session_add isa; 372 int error; 373 374 memset(&isa, 0, sizeof(isa)); 375 conf_from_target(&isa.isa_conf, targ); 376 error = ioctl(iscsi_fd, ISCSISADD, &isa); 377 if (error != 0) 378 xo_warn("ISCSISADD"); 379 return (error); 380} 381 382static int 383kernel_modify(int iscsi_fd, unsigned int session_id, const struct target *targ) 384{ 385 struct iscsi_session_modify ism; 386 int error; 387 388 memset(&ism, 0, sizeof(ism)); 389 ism.ism_session_id = session_id; 390 conf_from_target(&ism.ism_conf, targ); 391 error = ioctl(iscsi_fd, ISCSISMODIFY, &ism); 392 if (error != 0) 393 xo_warn("ISCSISMODIFY"); 394 return (error); 395} 396 397static void 398kernel_modify_some(int iscsi_fd, unsigned int session_id, const char *target, 399 const char *target_addr, const char *user, const char *secret, int enable) 400{ 401 struct iscsi_session_state *states = NULL; 402 struct iscsi_session_state *state; 403 struct iscsi_session_conf *conf; 404 struct iscsi_session_list isl; 405 struct iscsi_session_modify ism; 406 unsigned int i, nentries = 1; 407 int error; 408 409 for (;;) { 410 states = realloc(states, 411 nentries * sizeof(struct iscsi_session_state)); 412 if (states == NULL) 413 xo_err(1, "realloc"); 414 415 memset(&isl, 0, sizeof(isl)); 416 isl.isl_nentries = nentries; 417 isl.isl_pstates = states; 418 419 error = ioctl(iscsi_fd, ISCSISLIST, &isl); 420 if (error != 0 && errno == EMSGSIZE) { 421 nentries *= 4; 422 continue; 423 } 424 break; 425 } 426 if (error != 0) 427 xo_errx(1, "ISCSISLIST"); 428 429 for (i = 0; i < isl.isl_nentries; i++) { 430 state = &states[i]; 431 432 if (state->iss_id == session_id) 433 break; 434 } 435 if (i == isl.isl_nentries) 436 xo_errx(1, "session-id %u not found", session_id); 437 438 conf = &state->iss_conf; 439 440 if (target != NULL) 441 strlcpy(conf->isc_target, target, sizeof(conf->isc_target)); 442 if (target_addr != NULL) 443 strlcpy(conf->isc_target_addr, target_addr, 444 sizeof(conf->isc_target_addr)); 445 if (user != NULL) 446 strlcpy(conf->isc_user, user, sizeof(conf->isc_user)); 447 if (secret != NULL) 448 strlcpy(conf->isc_secret, secret, sizeof(conf->isc_secret)); 449 if (enable == ENABLE_ON) 450 conf->isc_enable = 1; 451 else if (enable == ENABLE_OFF) 452 conf->isc_enable = 0; 453 454 memset(&ism, 0, sizeof(ism)); 455 ism.ism_session_id = session_id; 456 memcpy(&ism.ism_conf, conf, sizeof(ism.ism_conf)); 457 error = ioctl(iscsi_fd, ISCSISMODIFY, &ism); 458 if (error != 0) 459 xo_warn("ISCSISMODIFY"); 460} 461 462static int 463kernel_remove(int iscsi_fd, const struct target *targ) 464{ 465 struct iscsi_session_remove isr; 466 int error; 467 468 memset(&isr, 0, sizeof(isr)); 469 conf_from_target(&isr.isr_conf, targ); 470 error = ioctl(iscsi_fd, ISCSISREMOVE, &isr); 471 if (error != 0) 472 xo_warn("ISCSISREMOVE"); 473 return (error); 474} 475 476/* 477 * XXX: Add filtering. 478 */ 479static int 480kernel_list(int iscsi_fd, const struct target *targ __unused, 481 int verbose) 482{ 483 struct iscsi_session_state *states = NULL; 484 const struct iscsi_session_state *state; 485 const struct iscsi_session_conf *conf; 486 struct iscsi_session_list isl; 487 unsigned int i, nentries = 1; 488 int error; 489 490 for (;;) { 491 states = realloc(states, 492 nentries * sizeof(struct iscsi_session_state)); 493 if (states == NULL) 494 xo_err(1, "realloc"); 495 496 memset(&isl, 0, sizeof(isl)); 497 isl.isl_nentries = nentries; 498 isl.isl_pstates = states; 499 500 error = ioctl(iscsi_fd, ISCSISLIST, &isl); 501 if (error != 0 && errno == EMSGSIZE) { 502 nentries *= 4; 503 continue; 504 } 505 break; 506 } 507 if (error != 0) { 508 xo_warn("ISCSISLIST"); 509 return (error); 510 } 511 512 if (verbose != 0) { 513 xo_open_list("session"); 514 for (i = 0; i < isl.isl_nentries; i++) { 515 state = &states[i]; 516 conf = &state->iss_conf; 517 518 xo_open_instance("session"); 519 520 /* 521 * Display-only modifier as this information 522 * is also present within the 'session' container 523 */ 524 xo_emit("{L:/%-26s}{V:sessionId/%u}\n", 525 "Session ID:", state->iss_id); 526 527 xo_open_container("initiator"); 528 xo_emit("{L:/%-26s}{V:name/%s}\n", 529 "Initiator name:", conf->isc_initiator); 530 xo_emit("{L:/%-26s}{V:portal/%s}\n", 531 "Initiator portal:", conf->isc_initiator_addr); 532 xo_emit("{L:/%-26s}{V:alias/%s}\n", 533 "Initiator alias:", conf->isc_initiator_alias); 534 xo_close_container("initiator"); 535 536 xo_open_container("target"); 537 xo_emit("{L:/%-26s}{V:name/%s}\n", 538 "Target name:", conf->isc_target); 539 xo_emit("{L:/%-26s}{V:portal/%s}\n", 540 "Target portal:", conf->isc_target_addr); 541 xo_emit("{L:/%-26s}{V:alias/%s}\n", 542 "Target alias:", state->iss_target_alias); 543 if (conf->isc_dscp != -1) 544 xo_emit("{L:/%-26s}{V:dscp/0x%02x}\n", 545 "Target DSCP:", conf->isc_dscp); 546 if (conf->isc_pcp != -1) 547 xo_emit("{L:/%-26s}{V:pcp/0x%02x}\n", 548 "Target PCP:", conf->isc_pcp); 549 if (conf->isc_ping_timeout != -1) 550 xo_emit("{L:/%-26s}{V:PingTimeout/%d}\n", 551 "Target PingTimeout:", 552 conf->isc_ping_timeout); 553 if (conf->isc_login_timeout != -1) 554 xo_emit("{L:/%-26s}{V:LoginTimeout/%d}\n", 555 "Target LoginTimeout:", 556 conf->isc_login_timeout); 557 xo_close_container("target"); 558 559 xo_open_container("auth"); 560 xo_emit("{L:/%-26s}{V:user/%s}\n", 561 "User:", conf->isc_user); 562 xo_emit("{L:/%-26s}{V:secret/%s}\n", 563 "Secret:", conf->isc_secret); 564 xo_emit("{L:/%-26s}{V:mutualUser/%s}\n", 565 "Mutual user:", conf->isc_mutual_user); 566 xo_emit("{L:/%-26s}{V:mutualSecret/%s}\n", 567 "Mutual secret:", conf->isc_mutual_secret); 568 xo_close_container("auth"); 569 570 xo_emit("{L:/%-26s}{V:type/%s}\n", 571 "Session type:", 572 conf->isc_discovery ? "Discovery" : "Normal"); 573 xo_emit("{L:/%-26s}{V:enable/%s}\n", 574 "Enable:", 575 conf->isc_enable ? "Yes" : "No"); 576 xo_emit("{L:/%-26s}{V:state/%s}\n", 577 "Session state:", 578 state->iss_connected ? "Connected" : "Disconnected"); 579 xo_emit("{L:/%-26s}{V:failureReason/%s}\n", 580 "Failure reason:", state->iss_reason); 581 xo_emit("{L:/%-26s}{V:headerDigest/%s}\n", 582 "Header digest:", 583 state->iss_header_digest == ISCSI_DIGEST_CRC32C ? 584 "CRC32C" : "None"); 585 xo_emit("{L:/%-26s}{V:dataDigest/%s}\n", 586 "Data digest:", 587 state->iss_data_digest == ISCSI_DIGEST_CRC32C ? 588 "CRC32C" : "None"); 589 xo_emit("{L:/%-26s}{V:recvDataSegmentLen/%d}\n", 590 "MaxRecvDataSegmentLength:", 591 state->iss_max_recv_data_segment_length); 592 xo_emit("{L:/%-26s}{V:sendDataSegmentLen/%d}\n", 593 "MaxSendDataSegmentLength:", 594 state->iss_max_send_data_segment_length); 595 xo_emit("{L:/%-26s}{V:maxBurstLen/%d}\n", 596 "MaxBurstLen:", state->iss_max_burst_length); 597 xo_emit("{L:/%-26s}{V:firstBurstLen/%d}\n", 598 "FirstBurstLen:", state->iss_first_burst_length); 599 xo_emit("{L:/%-26s}{V:immediateData/%s}\n", 600 "ImmediateData:", state->iss_immediate_data ? "Yes" : "No"); 601 xo_emit("{L:/%-26s}{V:iSER/%s}\n", 602 "iSER (RDMA):", conf->isc_iser ? "Yes" : "No"); 603 xo_emit("{L:/%-26s}{V:offloadDriver/%s}\n", 604 "Offload driver:", state->iss_offload); 605 xo_emit("{L:/%-26s}", 606 "Device nodes:"); 607 print_periphs(state->iss_id); 608 xo_emit("\n\n"); 609 xo_close_instance("session"); 610 } 611 xo_close_list("session"); 612 } else { 613 xo_emit("{T:/%-36s} {T:/%-16s} {T:/%s}\n", 614 "Target name", "Target portal", "State"); 615 616 if (isl.isl_nentries != 0) 617 xo_open_list("session"); 618 for (i = 0; i < isl.isl_nentries; i++) { 619 620 state = &states[i]; 621 conf = &state->iss_conf; 622 623 xo_open_instance("session"); 624 xo_emit("{V:name/%-36s/%s} {V:portal/%-16s/%s} ", 625 conf->isc_target, conf->isc_target_addr); 626 627 if (state->iss_reason[0] != '\0' && 628 conf->isc_enable != 0) { 629 xo_emit("{V:state/%s}\n", state->iss_reason); 630 } else { 631 if (conf->isc_discovery) { 632 xo_emit("{V:state}\n", "Discovery"); 633 } else if (conf->isc_enable == 0) { 634 xo_emit("{V:state}\n", "Disabled"); 635 } else if (state->iss_connected) { 636 xo_emit("{V:state}: ", "Connected"); 637 print_periphs(state->iss_id); 638 xo_emit("\n"); 639 } else { 640 xo_emit("{V:state}\n", "Disconnected"); 641 } 642 } 643 xo_close_instance("session"); 644 } 645 if (isl.isl_nentries != 0) 646 xo_close_list("session"); 647 } 648 649 return (0); 650} 651 652static int 653kernel_wait(int iscsi_fd, int timeout) 654{ 655 struct iscsi_session_state *states = NULL; 656 const struct iscsi_session_state *state; 657 struct iscsi_session_list isl; 658 unsigned int i, nentries = 1; 659 bool all_connected; 660 int error; 661 662 for (;;) { 663 for (;;) { 664 states = realloc(states, 665 nentries * sizeof(struct iscsi_session_state)); 666 if (states == NULL) 667 xo_err(1, "realloc"); 668 669 memset(&isl, 0, sizeof(isl)); 670 isl.isl_nentries = nentries; 671 isl.isl_pstates = states; 672 673 error = ioctl(iscsi_fd, ISCSISLIST, &isl); 674 if (error != 0 && errno == EMSGSIZE) { 675 nentries *= 4; 676 continue; 677 } 678 break; 679 } 680 if (error != 0) { 681 xo_warn("ISCSISLIST"); 682 return (error); 683 } 684 685 all_connected = true; 686 for (i = 0; i < isl.isl_nentries; i++) { 687 state = &states[i]; 688 689 if (!state->iss_connected) { 690 all_connected = false; 691 break; 692 } 693 } 694 695 if (all_connected) 696 return (0); 697 698 sleep(1); 699 700 if (timeout > 0) { 701 timeout--; 702 if (timeout == 0) 703 return (1); 704 } 705 } 706} 707 708static void 709usage(void) 710{ 711 712 fprintf(stderr, "usage: iscsictl -A -p portal -t target " 713 "[-u user -s secret] [-w timeout] [-e on | off]\n"); 714 fprintf(stderr, " iscsictl -A -d discovery-host " 715 "[-u user -s secret] [-e on | off]\n"); 716 fprintf(stderr, " iscsictl -A -a [-c path]\n"); 717 fprintf(stderr, " iscsictl -A -n nickname [-c path]\n"); 718 fprintf(stderr, " iscsictl -M -i session-id [-p portal] " 719 "[-t target] [-u user] [-s secret] [-e on | off]\n"); 720 fprintf(stderr, " iscsictl -M -i session-id -n nickname " 721 "[-c path]\n"); 722 fprintf(stderr, " iscsictl -R [-p portal] [-t target]\n"); 723 fprintf(stderr, " iscsictl -R -a\n"); 724 fprintf(stderr, " iscsictl -R -n nickname [-c path]\n"); 725 fprintf(stderr, " iscsictl -L [-v] [-w timeout]\n"); 726 exit(1); 727} 728 729int 730main(int argc, char **argv) 731{ 732 int Aflag = 0, Mflag = 0, Rflag = 0, Lflag = 0, aflag = 0, 733 rflag = 0, vflag = 0; 734 const char *conf_path = DEFAULT_CONFIG_PATH; 735 char *nickname = NULL, *discovery_host = NULL, *portal = NULL, 736 *target = NULL, *user = NULL, *secret = NULL; 737 int timeout = -1, enable = ENABLE_UNSPECIFIED; 738 long long session_id = -1; 739 char *end; 740 int ch, error, iscsi_fd, retval, saved_errno; 741 int failed = 0; 742 struct conf *conf; 743 struct target *targ; 744 745 argc = xo_parse_args(argc, argv); 746 if (argc < 0) 747 exit(1); 748 749 xo_open_container("iscsictl"); 750 751 while ((ch = getopt(argc, argv, "AMRLac:d:e:i:n:p:rt:u:s:vw:")) != -1) { 752 switch (ch) { 753 case 'A': 754 Aflag = 1; 755 break; 756 case 'M': 757 Mflag = 1; 758 break; 759 case 'R': 760 Rflag = 1; 761 break; 762 case 'L': 763 Lflag = 1; 764 break; 765 case 'a': 766 aflag = 1; 767 break; 768 case 'c': 769 conf_path = optarg; 770 break; 771 case 'd': 772 discovery_host = optarg; 773 break; 774 case 'e': 775 enable = parse_enable(optarg); 776 if (enable == ENABLE_UNSPECIFIED) { 777 xo_errx(1, "invalid argument to -e, " 778 "must be either \"on\" or \"off\""); 779 } 780 break; 781 case 'i': 782 session_id = strtol(optarg, &end, 10); 783 if ((size_t)(end - optarg) != strlen(optarg)) 784 xo_errx(1, "trailing characters after session-id"); 785 if (session_id < 0) 786 xo_errx(1, "session-id cannot be negative"); 787 if (session_id > UINT_MAX) 788 xo_errx(1, "session-id cannot be greater than %u", 789 UINT_MAX); 790 break; 791 case 'n': 792 nickname = optarg; 793 break; 794 case 'p': 795 portal = optarg; 796 break; 797 case 'r': 798 rflag = 1; 799 break; 800 case 't': 801 target = optarg; 802 break; 803 case 'u': 804 user = optarg; 805 break; 806 case 's': 807 secret = optarg; 808 break; 809 case 'v': 810 vflag = 1; 811 break; 812 case 'w': 813 timeout = strtol(optarg, &end, 10); 814 if ((size_t)(end - optarg) != strlen(optarg)) 815 xo_errx(1, "trailing characters after timeout"); 816 if (timeout < 0) 817 xo_errx(1, "timeout cannot be negative"); 818 break; 819 case '?': 820 default: 821 usage(); 822 } 823 } 824 argc -= optind; 825 if (argc != 0) 826 usage(); 827 828 if (Aflag + Mflag + Rflag + Lflag == 0) 829 Lflag = 1; 830 if (Aflag + Mflag + Rflag + Lflag > 1) 831 xo_errx(1, "at most one of -A, -M, -R, or -L may be specified"); 832 833 /* 834 * Note that we ignore unnecessary/inapplicable "-c" flag; so that 835 * people can do something like "alias ISCSICTL="iscsictl -c path" 836 * in shell scripts. 837 */ 838 if (Aflag != 0) { 839 if (aflag != 0) { 840 if (enable != ENABLE_UNSPECIFIED) 841 xo_errx(1, "-a and -e are mutually exclusive"); 842 if (portal != NULL) 843 xo_errx(1, "-a and -p are mutually exclusive"); 844 if (target != NULL) 845 xo_errx(1, "-a and -t are mutually exclusive"); 846 if (user != NULL) 847 xo_errx(1, "-a and -u are mutually exclusive"); 848 if (secret != NULL) 849 xo_errx(1, "-a and -s are mutually exclusive"); 850 if (nickname != NULL) 851 xo_errx(1, "-a and -n are mutually exclusive"); 852 if (discovery_host != NULL) 853 xo_errx(1, "-a and -d are mutually exclusive"); 854 if (rflag != 0) 855 xo_errx(1, "-a and -r are mutually exclusive"); 856 } else if (nickname != NULL) { 857 if (enable != ENABLE_UNSPECIFIED) 858 xo_errx(1, "-n and -e are mutually exclusive"); 859 if (portal != NULL) 860 xo_errx(1, "-n and -p are mutually exclusive"); 861 if (target != NULL) 862 xo_errx(1, "-n and -t are mutually exclusive"); 863 if (user != NULL) 864 xo_errx(1, "-n and -u are mutually exclusive"); 865 if (secret != NULL) 866 xo_errx(1, "-n and -s are mutually exclusive"); 867 if (discovery_host != NULL) 868 xo_errx(1, "-n and -d are mutually exclusive"); 869 if (rflag != 0) 870 xo_errx(1, "-n and -r are mutually exclusive"); 871 } else if (discovery_host != NULL) { 872 if (portal != NULL) 873 xo_errx(1, "-d and -p are mutually exclusive"); 874 if (target != NULL) 875 xo_errx(1, "-d and -t are mutually exclusive"); 876 } else { 877 if (target == NULL && portal == NULL) 878 xo_errx(1, "must specify -a, -n or -t/-p"); 879 880 if (target != NULL && portal == NULL) 881 xo_errx(1, "-t must always be used with -p"); 882 if (portal != NULL && target == NULL) 883 xo_errx(1, "-p must always be used with -t"); 884 } 885 886 if (user != NULL && secret == NULL) 887 xo_errx(1, "-u must always be used with -s"); 888 if (secret != NULL && user == NULL) 889 xo_errx(1, "-s must always be used with -u"); 890 891 if (session_id != -1) 892 xo_errx(1, "-i cannot be used with -A"); 893 if (vflag != 0) 894 xo_errx(1, "-v cannot be used with -A"); 895 896 } else if (Mflag != 0) { 897 if (session_id == -1) 898 xo_errx(1, "-M requires -i"); 899 900 if (nickname != NULL) { 901 if (enable != ENABLE_UNSPECIFIED) 902 xo_errx(1, "-n and -e are mutually exclusive"); 903 if (portal != NULL) 904 xo_errx(1, "-n and -p are mutually exclusive"); 905 if (target != NULL) 906 xo_errx(1, "-n and -t are mutually exclusive"); 907 if (user != NULL) 908 xo_errx(1, "-n and -u are mutually exclusive"); 909 if (secret != NULL) 910 xo_errx(1, "-n and -s are mutually exclusive"); 911 } 912 913 if (aflag != 0) 914 xo_errx(1, "-a cannot be used with -M"); 915 if (discovery_host != NULL) 916 xo_errx(1, "-d cannot be used with -M"); 917 if (rflag != 0) 918 xo_errx(1, "-r cannot be used with -M"); 919 if (vflag != 0) 920 xo_errx(1, "-v cannot be used with -M"); 921 if (timeout != -1) 922 xo_errx(1, "-w cannot be used with -M"); 923 924 } else if (Rflag != 0) { 925 if (aflag != 0) { 926 if (portal != NULL) 927 xo_errx(1, "-a and -p are mutually exclusive"); 928 if (target != NULL) 929 xo_errx(1, "-a and -t are mutually exclusive"); 930 if (nickname != NULL) 931 xo_errx(1, "-a and -n are mutually exclusive"); 932 } else if (nickname != NULL) { 933 if (portal != NULL) 934 xo_errx(1, "-n and -p are mutually exclusive"); 935 if (target != NULL) 936 xo_errx(1, "-n and -t are mutually exclusive"); 937 } else if (target == NULL && portal == NULL) { 938 xo_errx(1, "must specify either -a, -n, -t, or -p"); 939 } 940 941 if (discovery_host != NULL) 942 xo_errx(1, "-d cannot be used with -R"); 943 if (enable != ENABLE_UNSPECIFIED) 944 xo_errx(1, "-e cannot be used with -R"); 945 if (session_id != -1) 946 xo_errx(1, "-i cannot be used with -R"); 947 if (rflag != 0) 948 xo_errx(1, "-r cannot be used with -R"); 949 if (user != NULL) 950 xo_errx(1, "-u cannot be used with -R"); 951 if (secret != NULL) 952 xo_errx(1, "-s cannot be used with -R"); 953 if (vflag != 0) 954 xo_errx(1, "-v cannot be used with -R"); 955 if (timeout != -1) 956 xo_errx(1, "-w cannot be used with -R"); 957 958 } else { 959 assert(Lflag != 0); 960 961 if (discovery_host != NULL) 962 xo_errx(1, "-d cannot be used with -L"); 963 if (session_id != -1) 964 xo_errx(1, "-i cannot be used with -L"); 965 if (nickname != NULL) 966 xo_errx(1, "-n cannot be used with -L"); 967 if (portal != NULL) 968 xo_errx(1, "-p cannot be used with -L"); 969 if (rflag != 0) 970 xo_errx(1, "-r cannot be used with -L"); 971 if (target != NULL) 972 xo_errx(1, "-t cannot be used with -L"); 973 if (user != NULL) 974 xo_errx(1, "-u cannot be used with -L"); 975 if (secret != NULL) 976 xo_errx(1, "-s cannot be used with -L"); 977 } 978 979 iscsi_fd = open(ISCSI_PATH, O_RDWR); 980 if (iscsi_fd < 0 && errno == ENOENT) { 981 saved_errno = errno; 982 retval = kldload("iscsi"); 983 if (retval != -1) 984 iscsi_fd = open(ISCSI_PATH, O_RDWR); 985 else 986 errno = saved_errno; 987 } 988 if (iscsi_fd < 0) 989 xo_err(1, "failed to open %s", ISCSI_PATH); 990 991 if (Aflag != 0 && aflag != 0) { 992 conf = conf_new_from_file(conf_path); 993 994 TAILQ_FOREACH(targ, &conf->conf_targets, t_next) 995 failed += kernel_add(iscsi_fd, targ); 996 } else if (nickname != NULL) { 997 conf = conf_new_from_file(conf_path); 998 targ = target_find(conf, nickname); 999 if (targ == NULL) 1000 xo_errx(1, "target %s not found in %s", 1001 nickname, conf_path); 1002 1003 if (Aflag != 0) 1004 failed += kernel_add(iscsi_fd, targ); 1005 else if (Mflag != 0) 1006 failed += kernel_modify(iscsi_fd, session_id, targ); 1007 else if (Rflag != 0) 1008 failed += kernel_remove(iscsi_fd, targ); 1009 else 1010 failed += kernel_list(iscsi_fd, targ, vflag); 1011 } else if (Mflag != 0) { 1012 kernel_modify_some(iscsi_fd, session_id, target, portal, 1013 user, secret, enable); 1014 } else { 1015 if (Aflag != 0 && target != NULL) { 1016 if (valid_iscsi_name(target) == false) 1017 xo_errx(1, "invalid target name \"%s\"", target); 1018 } 1019 conf = conf_new(); 1020 targ = target_new(conf); 1021 targ->t_initiator_name = default_initiator_name(); 1022 targ->t_header_digest = DIGEST_NONE; 1023 targ->t_data_digest = DIGEST_NONE; 1024 targ->t_name = target; 1025 if (discovery_host != NULL) { 1026 targ->t_session_type = SESSION_TYPE_DISCOVERY; 1027 targ->t_address = discovery_host; 1028 } else { 1029 targ->t_session_type = SESSION_TYPE_NORMAL; 1030 targ->t_address = portal; 1031 } 1032 targ->t_enable = enable; 1033 if (rflag != 0) 1034 targ->t_protocol = PROTOCOL_ISER; 1035 targ->t_user = user; 1036 targ->t_secret = secret; 1037 1038 if (Aflag != 0) 1039 failed += kernel_add(iscsi_fd, targ); 1040 else if (Rflag != 0) 1041 failed += kernel_remove(iscsi_fd, targ); 1042 else 1043 failed += kernel_list(iscsi_fd, targ, vflag); 1044 } 1045 1046 if (timeout != -1) 1047 failed += kernel_wait(iscsi_fd, timeout); 1048 1049 error = close(iscsi_fd); 1050 if (error != 0) 1051 xo_err(1, "close"); 1052 1053 xo_close_container("iscsictl"); 1054 xo_finish(); 1055 1056 if (failed != 0) 1057 return (1); 1058 1059 return (0); 1060} 1061