sbin/camcontrol/persist.c

   1 /*-
   2  * Copyright (c) 2013 Spectra Logic Corporation
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions, and the following disclaimer,
  10  *    without modification.
  11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  12  *    substantially similar to the "NO WARRANTY" disclaimer below
  13  *    ("Disclaimer") and any redistribution must be conditioned upon
  14  *    including a substantially similar Disclaimer requirement for further
  15  *    binary redistribution.
  16  *
  17  * NO WARRANTY
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGES.
  29  *
  30  * Authors: Ken Merry           (Spectra Logic Corporation)
  31  */
  32 /*
  33  * SCSI Persistent Reservation support for camcontrol(8).
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __FBSDID("$FreeBSD$");
  38
  39 #include <sys/ioctl.h>
  40 #include <sys/stdint.h>
  41 #include <sys/types.h>
  42 #include <sys/endian.h>
  43 #include <sys/sbuf.h>
  44 #include <sys/queue.h>
  45
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <inttypes.h>
  49 #include <unistd.h>
  50 #include <string.h>
  51 #include <strings.h>
  52 #include <fcntl.h>
  53 #include <ctype.h>
  54 #include <limits.h>
  55 #include <err.h>
  56
  57 #include <cam/cam.h>
  58 #include <cam/cam_debug.h>
  59 #include <cam/cam_ccb.h>
  60 #include <cam/scsi/scsi_all.h>
  61 #include <cam/scsi/scsi_pass.h>
  62 #include <cam/scsi/scsi_message.h>
  63 #include <camlib.h>
  64 #include "camcontrol.h"
  65
  66 struct persist_transport_id {
  67         struct scsi_transportid_header *hdr;
  68         unsigned int alloc_len;
  69         STAILQ_ENTRY(persist_transport_id) links;
  70 };
  71
  72 /*
  73  * Service Actions for PERSISTENT RESERVE IN.
  74  */
  75 static struct scsi_nv persist_in_actions[] = {
  76         { "read_keys", SPRI_RK },
  77         { "read_reservation", SPRI_RR },
  78         { "report_capabilities", SPRI_RC },
  79         { "read_full_status", SPRI_RS }
  80 };
  81
  82 /*
  83  * Service Actions for PERSISTENT RESERVE OUT.
  84  */
  85 static struct scsi_nv persist_out_actions[] = {
  86         { "register", SPRO_REGISTER },
  87         { "reserve", SPRO_RESERVE },
  88         { "release" , SPRO_RELEASE },
  89         { "clear", SPRO_CLEAR },
  90         { "preempt", SPRO_PREEMPT },
  91         { "preempt_abort", SPRO_PRE_ABO },
  92         { "register_ignore", SPRO_REG_IGNO },
  93         { "register_move", SPRO_REG_MOVE },
  94         { "replace_lost", SPRO_REPL_LOST_RES }
  95 };
  96
  97 /*
  98  * Known reservation scopes.  As of SPC-4, only LU_SCOPE is used in the
  99  * spec.  The others are obsolete.
 100  */
 101 static struct scsi_nv persist_scope_table[] = {
 102         { "lun", SPR_LU_SCOPE },
 103         { "extent", SPR_EXTENT_SCOPE },
 104         { "element", SPR_ELEMENT_SCOPE }
 105 };
 106
 107 /*
 108  * Reservation types.  The longer name for a given reservation type is
 109  * listed first, so that it makes more sense when we print out the
 110  * reservation type.  We step through the table linearly when looking for
 111  * the text name for a particular numeric reservation type value.
 112  */
 113 static struct scsi_nv persist_type_table[] = {
 114         { "read_shared", SPR_TYPE_RD_SHARED },
 115         { "write_exclusive", SPR_TYPE_WR_EX },
 116         { "wr_ex", SPR_TYPE_WR_EX },
 117         { "read_exclusive", SPR_TYPE_RD_EX },
 118         { "rd_ex", SPR_TYPE_RD_EX },
 119         { "exclusive_access", SPR_TYPE_EX_AC },
 120         { "ex_ac", SPR_TYPE_EX_AC },
 121         { "write_exclusive_reg_only", SPR_TYPE_WR_EX_RO },
 122         { "wr_ex_ro", SPR_TYPE_WR_EX_RO },
 123         { "exclusive_access_reg_only", SPR_TYPE_EX_AC_RO },
 124         { "ex_ac_ro", SPR_TYPE_EX_AC_RO },
 125         { "write_exclusive_all_regs", SPR_TYPE_WR_EX_AR },
 126         { "wr_ex_ar", SPR_TYPE_WR_EX_AR },
 127         { "exclusive_access_all_regs", SPR_TYPE_EX_AC_AR },
 128         { "ex_ac_ar", SPR_TYPE_EX_AC_AR }
 129 };
 130
 131 /*
 132  * Print out the standard scope/type field.
 133  */
 134 static void
 135 persist_print_scopetype(uint8_t scopetype)
 136 {
 137         const char *tmpstr;
 138         int num_entries;
 139
 140         num_entries = sizeof(persist_scope_table) /
 141                       sizeof(persist_scope_table[0]);
 142         tmpstr = scsi_nv_to_str(persist_scope_table, num_entries,
 143                                 scopetype & SPR_SCOPE_MASK);
 144         fprintf(stdout, "Scope: %s (%#x)\n", (tmpstr != NULL) ? tmpstr :
 145                 "Unknown", (scopetype & SPR_SCOPE_MASK) >> SPR_SCOPE_SHIFT);
 146
 147         num_entries = sizeof(persist_type_table) /
 148                       sizeof(persist_type_table[0]);
 149         tmpstr = scsi_nv_to_str(persist_type_table, num_entries,
 150                                 scopetype & SPR_TYPE_MASK);
 151         fprintf(stdout, "Type: %s (%#x)\n", (tmpstr != NULL) ? tmpstr :
 152                 "Unknown", scopetype & SPR_TYPE_MASK);
 153 }
 154
 155 static void
 156 persist_print_transportid(uint8_t *buf, uint32_t len)
 157 {
 158         struct sbuf *sb;
 159
 160         sb = sbuf_new_auto();
 161         if (sb == NULL)
 162                 fprintf(stderr, "Unable to allocate sbuf\n");
 163
 164         scsi_transportid_sbuf(sb, (struct scsi_transportid_header *)buf, len);
 165
 166         sbuf_finish(sb);
 167
 168         fprintf(stdout, "%s\n", sbuf_data(sb));
 169
 170         sbuf_delete(sb);
 171 }
 172
 173 /*
 174  * Print out a persistent reservation.  This is used with the READ
 175  * RESERVATION (0x01) service action of the PERSISTENT RESERVE IN command.
 176  */
 177 static void
 178 persist_print_res(struct scsi_per_res_in_header *hdr, uint32_t valid_len)
 179 {
 180         uint32_t length;
 181         struct scsi_per_res_in_rsrv *res;
 182
 183         length = scsi_4btoul(hdr->length);
 184         length = MIN(length, valid_len);
 185
 186         res = (struct scsi_per_res_in_rsrv *)hdr;
 187
 188         if (length < sizeof(res->data) - sizeof(res->data.extent_length)) {
 189                 if (length == 0)
 190                         fprintf(stdout, "No reservations.\n");
 191                 else
 192                         warnx("unable to print reservation, only got %u "
 193                               "valid bytes", length);
 194                 return;
 195         }
 196         fprintf(stdout, "PRgeneration: %#x\n",
 197                 scsi_4btoul(res->header.generation));
 198         fprintf(stdout, "Reservation Key: %#jx\n",
 199                 (uintmax_t)scsi_8btou64(res->data.reservation));
 200         fprintf(stdout, "Scope address: %#x\n",
 201                 scsi_4btoul(res->data.scope_addr));
 202
 203         persist_print_scopetype(res->data.scopetype);
 204
 205         fprintf(stdout, "Extent length: %u\n",
 206                 scsi_2btoul(res->data.extent_length));
 207 }
 208
 209 /*
 210  * Print out persistent reservation keys.  This is used with the READ KEYS
 211  * service action of the PERSISTENT RESERVE IN command.
 212  */
 213 static void
 214 persist_print_keys(struct scsi_per_res_in_header *hdr, uint32_t valid_len)
 215 {
 216         uint32_t length, num_keys, i;
 217         struct scsi_per_res_key *key;
 218
 219         length = scsi_4btoul(hdr->length);
 220         length = MIN(length, valid_len);
 221
 222         num_keys = length / sizeof(*key);
 223
 224         fprintf(stdout, "PRgeneration: %#x\n", scsi_4btoul(hdr->generation));
 225         fprintf(stdout, "%u key%s%s\n", num_keys, (num_keys == 1) ? "" : "s",
 226                 (num_keys == 0) ? "." : ":");
 227
 228         for (i = 0, key = (struct scsi_per_res_key *)&hdr[1]; i < num_keys;
 229              i++, key++) {
 230                 fprintf(stdout, "%u: %#jx\n", i,
 231                         (uintmax_t)scsi_8btou64(key->key));
 232         }
 233 }
 234
 235 /*
 236  * Print out persistent reservation capabilities.  This is used with the
 237  * REPORT CAPABILITIES service action of the PERSISTENT RESERVE IN command.
 238  */
 239 static void
 240 persist_print_cap(struct scsi_per_res_cap *cap, uint32_t valid_len)
 241 {
 242         uint32_t length;
 243         int check_type_mask = 0;
 244
 245         length = scsi_2btoul(cap->length);
 246         length = MIN(length, valid_len);
 247
 248         if (length < __offsetof(struct scsi_per_res_cap, type_mask)) {
 249                 fprintf(stdout, "Insufficient data (%u bytes) to report "
 250                         "full capabilities\n", length);
 251                 return;
 252         }
 253         if (length >= __offsetof(struct scsi_per_res_cap, reserved))
 254                 check_type_mask = 1;
 255
 256         fprintf(stdout, "Replace Lost Reservation Capable (RLR_C): %d\n",
 257                 (cap->flags1 & SPRI_RLR_C) ? 1 : 0);
 258         fprintf(stdout, "Compatible Reservation Handling (CRH): %d\n",
 259                 (cap->flags1 & SPRI_CRH) ? 1 : 0);
 260         fprintf(stdout, "Specify Initiator Ports Capable (SIP_C): %d\n",
 261                 (cap->flags1 & SPRI_SIP_C) ? 1 : 0);
 262         fprintf(stdout, "All Target Ports Capable (ATP_C): %d\n",
 263                 (cap->flags1 & SPRI_ATP_C) ? 1 : 0);
 264         fprintf(stdout, "Persist Through Power Loss Capable (PTPL_C): %d\n",
 265                 (cap->flags1 & SPRI_PTPL_C) ? 1 : 0);
 266         fprintf(stdout, "ALLOW COMMANDS field: (%#x)\n",
 267                 (cap->flags2 & SPRI_ALLOW_CMD_MASK) >> SPRI_ALLOW_CMD_SHIFT);
 268         /*
 269          * These cases are cut-and-pasted from SPC4r36l.  There is no
 270          * succinct way to describe these otherwise, and even with the
 271          * verbose description, the user will probably have to refer to
 272          * the spec to fully understand what is going on.
 273          */
 274         switch (cap->flags2 & SPRI_ALLOW_CMD_MASK) {
 275         case SPRI_ALLOW_1:
 276                 fprintf(stdout,
 277 "    The device server allows the TEST UNIT READY command through Write\n"
 278 "    Exclusive type reservations and Exclusive Access type reservations\n"
 279 "    and does not provide information about whether the following commands\n"
 280 "    are allowed through Write Exclusive type reservations:\n"
 281 "        a) the MODE SENSE command, READ ATTRIBUTE command, READ BUFFER\n"
 282 "           command, RECEIVE COPY RESULTS command, RECEIVE DIAGNOSTIC\n"
 283 "           RESULTS command, REPORT SUPPORTED OPERATION CODES command,\n"
 284 "           and REPORT SUPPORTED TASK MANAGEMENT FUNCTION command; and\n"
 285 "        b) the READ DEFECT DATA command (see SBC-3).\n");
 286                 break;
 287         case SPRI_ALLOW_2:
 288                 fprintf(stdout,
 289 "    The device server allows the TEST UNIT READY command through Write\n"
 290 "    Exclusive type reservations and Exclusive Access type reservations\n"
 291 "    and does not allow the following commands through Write Exclusive type\n"
 292 "    reservations:\n"
 293 "        a) the MODE SENSE command, READ ATTRIBUTE command, READ BUFFER\n"
 294 "           command, RECEIVE DIAGNOSTIC RESULTS command, REPORT SUPPORTED\n"
 295 "           OPERATION CODES command, and REPORT SUPPORTED TASK MANAGEMENT\n"
 296 "           FUNCTION command; and\n"
 297 "        b) the READ DEFECT DATA command.\n"
 298 "    The device server does not allow the RECEIVE COPY RESULTS command\n"
 299 "    through Write Exclusive type reservations or Exclusive Access type\n"
 300 "    reservations.\n");
 301                 break;
 302         case SPRI_ALLOW_3:
 303                 fprintf(stdout,
 304 "    The device server allows the TEST UNIT READY command through Write\n"
 305 "    Exclusive type reservations and Exclusive Access type reservations\n"
 306 "    and allows the following commands through Write Exclusive type\n"
 307 "    reservations:\n"
 308 "        a) the MODE SENSE command, READ ATTRIBUTE command, READ BUFFER\n"
 309 "           command, RECEIVE DIAGNOSTIC RESULTS command, REPORT SUPPORTED\n"
 310 "           OPERATION CODES command, and REPORT SUPPORTED TASK MANAGEMENT\n"
 311 "           FUNCTION command; and\n"
 312 "        b) the READ DEFECT DATA command.\n"
 313 "    The device server does not allow the RECEIVE COPY RESULTS command\n"
 314 "    through Write Exclusive type reservations or Exclusive Access type\n"
 315 "    reservations.\n");
 316                 break;
 317         case SPRI_ALLOW_4:
 318                 fprintf(stdout,
 319 "    The device server allows the TEST UNIT READY command and the RECEIVE\n"
 320 "    COPY RESULTS command through Write Exclusive type reservations and\n"
 321 "    Exclusive Access type reservations and allows the following commands\n"
 322 "    through Write Exclusive type reservations:\n"
 323 "        a) the MODE SENSE command, READ ATTRIBUTE command, READ BUFFER\n"
 324 "           command, RECEIVE DIAGNOSTIC RESULTS command, REPORT SUPPORTED\n"
 325 "           OPERATION CODES command, and REPORT SUPPORTED TASK MANAGEMENT\n"
 326 "           FUNCTION command; and\n"
 327 "        b) the READ DEFECT DATA command.\n");
 328                 break;
 329         case SPRI_ALLOW_NA:
 330                 fprintf(stdout,
 331 "    No information is provided about whether certain commands are allowed\n"
 332 "    through certain types of persistent reservations.\n");
 333                 break;
 334         default:
 335                 fprintf(stdout,
 336 "    Unknown ALLOW COMMANDS value %#x\n",
 337                         (cap->flags2 & SPRI_ALLOW_CMD_MASK) >>
 338                         SPRI_ALLOW_CMD_SHIFT);
 339                 break;
 340         }
 341         fprintf(stdout, "Persist Through Power Loss Activated (PTPL_A): %d\n",
 342                 (cap->flags2 & SPRI_PTPL_A) ? 1 : 0);
 343         if ((check_type_mask != 0)
 344          && (cap->flags2 & SPRI_TMV)) {
 345                 fprintf(stdout, "Supported Persistent Reservation Types:\n");
 346                 fprintf(stdout, "    Write Exclusive - All Registrants "
 347                         "(WR_EX_AR): %d\n",
 348                         (cap->type_mask[0] & SPRI_TM_WR_EX_AR)? 1 : 0);
 349                 fprintf(stdout, "    Exclusive Access - Registrants Only "
 350                         "(EX_AC_RO): %d\n",
 351                         (cap->type_mask[0] & SPRI_TM_EX_AC_RO) ? 1 : 0);
 352                 fprintf(stdout, "    Write Exclusive - Registrants Only "
 353                         "(WR_EX_RO): %d\n",
 354                         (cap->type_mask[0] & SPRI_TM_WR_EX_RO)? 1 : 0);
 355                 fprintf(stdout, "    Exclusive Access (EX_AC): %d\n",
 356                         (cap->type_mask[0] & SPRI_TM_EX_AC) ? 1 : 0);
 357                 fprintf(stdout, "    Write Exclusive (WR_EX): %d\n",
 358                         (cap->type_mask[0] & SPRI_TM_WR_EX) ? 1 : 0);
 359                 fprintf(stdout, "    Exclusive Access - All Registrants "
 360                         "(EX_AC_AR): %d\n",
 361                         (cap->type_mask[1] & SPRI_TM_EX_AC_AR) ? 1 : 0);
 362         } else {
 363                 fprintf(stdout, "Persistent Reservation Type Mask is NOT "
 364                         "valid\n");
 365         }
 366
 367
 368 }
 369
 370 static void
 371 persist_print_full(struct scsi_per_res_in_header *hdr, uint32_t valid_len)
 372 {
 373         uint32_t length, len_to_go = 0;
 374         struct scsi_per_res_in_full_desc *desc;
 375         uint8_t *cur_pos;
 376         int i;
 377
 378         length = scsi_4btoul(hdr->length);
 379         length = MIN(length, valid_len);
 380
 381         if (length < sizeof(*desc)) {
 382                 if (length == 0)
 383                         fprintf(stdout, "No reservations.\n");
 384                 else
 385                         warnx("unable to print reservation, only got %u "
 386                               "valid bytes", length);
 387                 return;
 388         }
 389
 390         fprintf(stdout, "PRgeneration: %#x\n", scsi_4btoul(hdr->generation));
 391         cur_pos = (uint8_t *)&hdr[1];
 392         for (len_to_go = length, i = 0,
 393              desc = (struct scsi_per_res_in_full_desc *)cur_pos;
 394              len_to_go >= sizeof(*desc);
 395              desc = (struct scsi_per_res_in_full_desc *)cur_pos, i++) {
 396                 uint32_t additional_length, cur_length;
 397
 398
 399                 fprintf(stdout, "Reservation Key: %#jx\n",
 400                         (uintmax_t)scsi_8btou64(desc->res_key.key));
 401                 fprintf(stdout, "All Target Ports (ALL_TG_PT): %d\n",
 402                         (desc->flags & SPRI_FULL_ALL_TG_PT) ? 1 : 0);
 403                 fprintf(stdout, "Reservation Holder (R_HOLDER): %d\n",
 404                         (desc->flags & SPRI_FULL_R_HOLDER) ? 1 : 0);
 405
 406                 if (desc->flags & SPRI_FULL_R_HOLDER)
 407                         persist_print_scopetype(desc->scopetype);
 408
 409                 if ((desc->flags & SPRI_FULL_ALL_TG_PT) == 0)
 410                         fprintf(stdout, "Relative Target Port ID: %#x\n",
 411                                 scsi_2btoul(desc->rel_trgt_port_id));
 412
 413                 additional_length = scsi_4btoul(desc->additional_length);
 414
 415                 persist_print_transportid(desc->transport_id,
 416                                           additional_length);
 417
 418                 cur_length = sizeof(*desc) + additional_length;
 419                 len_to_go -= cur_length;
 420                 cur_pos += cur_length;
 421         }
 422 }
 423
 424 int
 425 scsipersist(struct cam_device *device, int argc, char **argv, char *combinedopt,
 426             int retry_count, int timeout, int verbosemode, int err_recover)
 427 {
 428         union ccb *ccb = NULL;
 429         int c, in = 0, out = 0;
 430         int action = -1, num_ids = 0;
 431         int error = 0;
 432         uint32_t res_len = 0;
 433         unsigned long rel_tgt_port = 0;
 434         uint8_t *res_buf = NULL;
 435         int scope = SPR_LU_SCOPE, res_type = 0;
 436         struct persist_transport_id *id, *id2;
 437         STAILQ_HEAD(, persist_transport_id) transport_id_list;
 438         uint64_t key = 0, sa_key = 0;
 439         struct scsi_nv *table = NULL;
 440         size_t table_size = 0, id_len = 0;
 441         uint32_t valid_len = 0;
 442         int all_tg_pt = 0, aptpl = 0, spec_i_pt = 0, unreg = 0,rel_port_set = 0;
 443
 444         STAILQ_INIT(&transport_id_list);
 445
 446         ccb = cam_getccb(device);
 447         if (ccb == NULL) {
 448                 warnx("%s: error allocating CCB", __func__);
 449                 error = 1;
 450                 goto bailout;
 451         }
 452
 453         bzero(&(&ccb->ccb_h)[1],
 454               sizeof(union ccb) - sizeof(struct ccb_hdr));
 455
 456         while ((c = getopt(argc, argv, combinedopt)) != -1) {
 457                 switch (c) {
 458                 case 'a':
 459                         all_tg_pt = 1;
 460                         break;
 461                 case 'I': {
 462                         int error_str_len = 128;
 463                         char error_str[error_str_len];
 464                         char *id_str;
 465
 466                         id = malloc(sizeof(*id));
 467                         if (id == NULL) {
 468                                 warnx("%s: error allocating %zu bytes",
 469                                     __func__, sizeof(*id));
 470                                 error = 1;
 471                                 goto bailout;
 472                         }
 473                         bzero(id, sizeof(*id));
 474
 475                         id_str = strdup(optarg);
 476                         if (id_str == NULL) {
 477                                 warnx("%s: error duplicating string %s",
 478                                     __func__, optarg);
 479                                 free(id);
 480                                 error = 1;
 481                                 goto bailout;
 482                         }
 483                         error = scsi_parse_transportid(id_str, &id->hdr,
 484                             &id->alloc_len, error_str, error_str_len);
 485                         if (error != 0) {
 486                                 warnx("%s", error_str);
 487                                 error = 1;
 488                                 free(id);
 489                                 free(id_str);
 490                                 goto bailout;
 491                         }
 492                         free(id_str);
 493
 494                         STAILQ_INSERT_TAIL(&transport_id_list, id, links);
 495                         num_ids++;
 496                         id_len += id->alloc_len;
 497                         break;
 498                 }
 499                 case 'k':
 500                 case 'K': {
 501                         char *endptr;
 502                         uint64_t tmpval;
 503
 504                         tmpval = strtoumax(optarg, &endptr, 0);
 505                         if (*endptr != '\0') {
 506                                 warnx("%s: invalid key argument %s", __func__,
 507                                     optarg);
 508                                 error = 1;
 509                                 goto bailout;
 510                         }
 511                         if (c == 'k') {
 512                                 key = tmpval;
 513                         } else {
 514                                 sa_key = tmpval;
 515                         }
 516                         break;
 517                 }
 518                 case 'i':
 519                 case 'o': {
 520                         scsi_nv_status status;
 521                         int table_entry = 0;
 522
 523                         if (c == 'i') {
 524                                 in = 1;
 525                                 table = persist_in_actions;
 526                                 table_size = sizeof(persist_in_actions) /
 527                                         sizeof(persist_in_actions[0]);
 528                         } else {
 529                                 out = 1;
 530                                 table = persist_out_actions;
 531                                 table_size = sizeof(persist_out_actions) /
 532                                         sizeof(persist_out_actions[0]);
 533                         }
 534
 535                         if ((in + out) > 1) {
 536                                 warnx("%s: only one in (-i) or out (-o) "
 537                                     "action is allowed", __func__);
 538                                 error = 1;
 539                                 goto bailout;
 540                         }
 541
 542                         status = scsi_get_nv(table, table_size, optarg,
 543                                              &table_entry,SCSI_NV_FLAG_IG_CASE);
 544                         if (status == SCSI_NV_FOUND)
 545                                 action = table[table_entry].value;
 546                         else {
 547                                 warnx("%s: %s %s option %s", __func__,
 548                                     (status == SCSI_NV_AMBIGUOUS) ?
 549                                     "ambiguous" : "invalid", in ? "in" :
 550                                     "out", optarg);
 551                                 error = 1;
 552                                 goto bailout;
 553                         }
 554                         break;
 555                 }
 556                 case 'p':
 557                         aptpl = 1;
 558                         break;
 559                 case 'R': {
 560                         char *endptr;
 561
 562                         rel_tgt_port = strtoul(optarg, &endptr, 0);
 563                         if (*endptr != '\0') {
 564                                 warnx("%s: invalid relative target port %s",
 565                                     __func__, optarg);
 566                                 error = 1;
 567                                 goto bailout;
 568                         }
 569                         rel_port_set = 1;
 570                         break;
 571                 }
 572                 case 's': {
 573                         size_t scope_size;
 574                         struct scsi_nv *scope_table = NULL;
 575                         scsi_nv_status status;
 576                         int table_entry = 0;
 577                         char *endptr;
 578
 579                         /*
 580                          * First check to see if the user gave us a numeric
 581                          * argument.  If so, we'll try using it.
 582                          */
 583                         if (isdigit(optarg[0])) {
 584                                 scope = strtol(optarg, &endptr, 0);
 585                                 if (*endptr != '\0') {
 586                                         warnx("%s: invalid scope %s",
 587                                                __func__, optarg);
 588                                         error = 1;
 589                                         goto bailout;
 590                                 }
 591                                 scope = (scope << SPR_SCOPE_SHIFT) &
 592                                     SPR_SCOPE_MASK;
 593                                 break;
 594                         }
 595
 596                         scope_size = sizeof(persist_scope_table) /
 597                                      sizeof(persist_scope_table[0]);
 598                         scope_table = persist_scope_table;
 599                         status = scsi_get_nv(scope_table, scope_size, optarg,
 600                                              &table_entry,SCSI_NV_FLAG_IG_CASE);
 601                         if (status == SCSI_NV_FOUND)
 602                                 scope = scope_table[table_entry].value;
 603                         else {
 604                                 warnx("%s: %s scope %s", __func__,
 605                                       (status == SCSI_NV_AMBIGUOUS) ?
 606                                       "ambiguous" : "invalid", optarg);
 607                                 error = 1;
 608                                 goto bailout;
 609                         }
 610                         break;
 611                 }
 612                 case 'S':
 613                         spec_i_pt = 1;
 614                         break;
 615                 case 'T': {
 616                         size_t res_type_size;
 617                         struct scsi_nv *rtype_table = NULL;
 618                         scsi_nv_status status;
 619                         char *endptr;
 620                         int table_entry = 0;
 621
 622                         /*
 623                          * First check to see if the user gave us a numeric
 624                          * argument.  If so, we'll try using it.
 625                          */
 626                         if (isdigit(optarg[0])) {
 627                                 res_type = strtol(optarg, &endptr, 0);
 628                                 if (*endptr != '\0') {
 629                                         warnx("%s: invalid reservation type %s",
 630                                                __func__, optarg);
 631                                         error = 1;
 632                                         goto bailout;
 633                                 }
 634                                 break;
 635                         }
 636
 637                         res_type_size = sizeof(persist_type_table) /
 638                                         sizeof(persist_type_table[0]);
 639                         rtype_table = persist_type_table;
 640                         status = scsi_get_nv(rtype_table, res_type_size,
 641                                              optarg, &table_entry,
 642                                              SCSI_NV_FLAG_IG_CASE);
 643                         if (status == SCSI_NV_FOUND)
 644                                 res_type = rtype_table[table_entry].value;
 645                         else {
 646                                 warnx("%s: %s reservation type %s", __func__,
 647                                       (status == SCSI_NV_AMBIGUOUS) ?
 648                                       "ambiguous" : "invalid", optarg);
 649                                 error = 1;
 650                                 goto bailout;
 651                         }
 652                         break;
 653                 }
 654                 case 'U':
 655                         unreg = 1;
 656                         break;
 657                 default:
 658                         break;
 659                 }
 660         }
 661
 662         if ((in + out) != 1) {
 663                 warnx("%s: you must specify one of -i or -o", __func__);
 664                 error = 1;
 665                 goto bailout;
 666         }
 667
 668         /*
 669          * Note that we don't really try to figure out whether the user
 670          * needs to specify one or both keys.  There are a number of
 671          * scenarios, and sometimes 0 is a valid and desired value.
 672          */
 673         if (in != 0) {
 674                 switch (action) {
 675                 case SPRI_RK:
 676                 case SPRI_RR:
 677                 case SPRI_RS:
 678                         /*
 679                          * Allocate the maximum length possible for these
 680                          * service actions.  According to the spec, the
 681                          * target is supposed to return the available
 682                          * length in the header, regardless of the
 683                          * allocation length.  In practice, though, with
 684                          * the READ FULL STATUS (SPRI_RS) service action,
 685                          * some Seagate drives (in particular a
 686                          * Constellation ES, <SEAGATE ST32000444SS 0006>)
 687                          * don't return the available length if you only
 688                          * allocate the length of the header.  So just
 689                          * allocate the maximum here so we don't miss
 690                          * anything.
 691                          */
 692                         res_len = SPRI_MAX_LEN;
 693                         break;
 694                 case SPRI_RC:
 695                         res_len = sizeof(struct scsi_per_res_cap);
 696                         break;
 697                 default:
 698                         /* In theory we should catch this above */
 699                         warnx("%s: invalid action %d", __func__, action);
 700                         error = 1;
 701                         goto bailout;
 702                         break;
 703                 }
 704         } else {
 705
 706                 /*
 707                  * XXX KDM need to add length for transport IDs for the
 708                  * register and move service action and the register
 709                  * service action with the SPEC_I_PT bit set.
 710                  */
 711                 if (action == SPRO_REG_MOVE) {
 712                         if (num_ids != 1) {
 713                                 warnx("%s: register and move requires a "
 714                                     "single transport ID (-I)", __func__);
 715                                 error = 1;
 716                                 goto bailout;
 717                         }
 718                         if (rel_port_set == 0) {
 719                                 warnx("%s: register and move requires a "
 720                                     "relative target port (-R)", __func__);
 721                                 error = 1;
 722                                 goto bailout;
 723                         }
 724                         res_len = sizeof(struct scsi_per_res_reg_move) + id_len;
 725                 } else {
 726                         res_len = sizeof(struct scsi_per_res_out_parms);
 727                         if ((action == SPRO_REGISTER)
 728                          && (num_ids != 0)) {
 729                                 /*
 730                                  * If the user specifies any IDs with the
 731                                  * register service action, turn on the
 732                                  * spec_i_pt bit.
 733                                  */
 734                                 spec_i_pt = 1;
 735                                 res_len += id_len;
 736                                 res_len +=
 737                                     sizeof(struct scsi_per_res_out_trans_ids);
 738                         }
 739                 }
 740         }
 741 retry:
 742         if (res_buf != NULL) {
 743                 free(res_buf);
 744                 res_buf = NULL;
 745         }
 746         res_buf = malloc(res_len);
 747         if (res_buf == NULL) {
 748                 warn("%s: error allocating %d bytes", __func__, res_len);
 749                 error = 1;
 750                 goto bailout;
 751         }
 752         bzero(res_buf, res_len);
 753
 754         if (in != 0) {
 755                 scsi_persistent_reserve_in(&ccb->csio,
 756                                            /*retries*/ retry_count,
 757                                            /*cbfcnp*/ NULL,
 758                                            /*tag_action*/ MSG_SIMPLE_Q_TAG,
 759                                            /*service_action*/ action,
 760                                            /*data_ptr*/ res_buf,
 761                                            /*dxfer_len*/ res_len,
 762                                            /*sense_len*/ SSD_FULL_SIZE,
 763                                            /*timeout*/ timeout ? timeout :5000);
 764
 765         } else {
 766                 switch (action) {
 767                 case SPRO_REGISTER:
 768                         if (spec_i_pt != 0) {
 769                                 struct scsi_per_res_out_trans_ids *id_hdr;
 770                                 uint8_t *bufptr;
 771
 772                                 bufptr = res_buf +
 773                                     sizeof(struct scsi_per_res_out_parms) +
 774                                     sizeof(struct scsi_per_res_out_trans_ids);
 775                                 STAILQ_FOREACH(id, &transport_id_list, links) {
 776                                         bcopy(id->hdr, bufptr, id->alloc_len);
 777                                         bufptr += id->alloc_len;
 778                                 }
 779                                 id_hdr = (struct scsi_per_res_out_trans_ids *)
 780                                     (res_buf +
 781                                     sizeof(struct scsi_per_res_out_parms));
 782                                 scsi_ulto4b(id_len, id_hdr->additional_length);
 783                         }
 784                 case SPRO_REG_IGNO:
 785                 case SPRO_PREEMPT:
 786                 case SPRO_PRE_ABO:
 787                 case SPRO_RESERVE:
 788                 case SPRO_RELEASE:
 789                 case SPRO_CLEAR:
 790                 case SPRO_REPL_LOST_RES: {
 791                         struct scsi_per_res_out_parms *parms;
 792
 793                         parms = (struct scsi_per_res_out_parms *)res_buf;
 794
 795                         scsi_u64to8b(key, parms->res_key.key);
 796                         scsi_u64to8b(sa_key, parms->serv_act_res_key);
 797                         if (spec_i_pt != 0)
 798                                 parms->flags |= SPR_SPEC_I_PT;
 799                         if (all_tg_pt != 0)
 800                                 parms->flags |= SPR_ALL_TG_PT;
 801                         if (aptpl != 0)
 802                                 parms->flags |= SPR_APTPL;
 803                         break;
 804                 }
 805                 case SPRO_REG_MOVE: {
 806                         struct scsi_per_res_reg_move *reg_move;
 807                         uint8_t *bufptr;
 808
 809                         reg_move = (struct scsi_per_res_reg_move *)res_buf;
 810
 811                         scsi_u64to8b(key, reg_move->res_key.key);
 812                         scsi_u64to8b(sa_key, reg_move->serv_act_res_key);
 813                         if (unreg != 0)
 814                                 reg_move->flags |= SPR_REG_MOVE_UNREG;
 815                         if (aptpl != 0)
 816                                 reg_move->flags |= SPR_REG_MOVE_APTPL;
 817                         scsi_ulto2b(rel_tgt_port, reg_move->rel_trgt_port_id);
 818                         id = STAILQ_FIRST(&transport_id_list);
 819                         /*
 820                          * This shouldn't happen, since we already checked
 821                          * the number of IDs above.
 822                          */
 823                         if (id == NULL) {
 824                                 warnx("%s: No transport IDs found!", __func__);
 825                                 error = 1;
 826                                 goto bailout;
 827                         }
 828                         bufptr = (uint8_t *)&reg_move[1];
 829                         bcopy(id->hdr, bufptr, id->alloc_len);
 830                         scsi_ulto4b(id->alloc_len,
 831                             reg_move->transport_id_length);
 832                         break;
 833                 }
 834                 default:
 835                         break;
 836                 }
 837                 scsi_persistent_reserve_out(&ccb->csio,
 838                                             /*retries*/ retry_count,
 839                                             /*cbfcnp*/ NULL,
 840                                             /*tag_action*/ MSG_SIMPLE_Q_TAG,
 841                                             /*service_action*/ action,
 842                                             /*scope*/ scope,
 843                                             /*res_type*/ res_type,
 844                                             /*data_ptr*/ res_buf,
 845                                             /*dxfer_len*/ res_len,
 846                                             /*sense_len*/ SSD_FULL_SIZE,
 847                                             /*timeout*/ timeout ?timeout :5000);
 848         }
 849
 850         /* Disable freezing the device queue */
 851         ccb->ccb_h.flags |= CAM_DEV_QFRZDIS;
 852
 853         if (err_recover != 0)
 854                 ccb->ccb_h.flags |= CAM_PASS_ERR_RECOVER;
 855
 856         if (cam_send_ccb(device, ccb) < 0) {
 857                 warn("error sending PERSISTENT RESERVE %s", (in != 0) ?
 858                     "IN" : "OUT");
 859
 860                 if (verbosemode != 0) {
 861                         cam_error_print(device, ccb, CAM_ESF_ALL,
 862                                         CAM_EPF_ALL, stderr);
 863                 }
 864
 865                 error = 1;
 866                 goto bailout;
 867         }
 868
 869         if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 870                 if (verbosemode != 0) {
 871                         cam_error_print(device, ccb, CAM_ESF_ALL,
 872                                         CAM_EPF_ALL, stderr);
 873                 }
 874                 error = 1;
 875                 goto bailout;
 876         }
 877
 878         if (in == 0)
 879                 goto bailout;
 880
 881         valid_len = res_len - ccb->csio.resid;
 882
 883         switch (action) {
 884         case SPRI_RK:
 885         case SPRI_RR:
 886         case SPRI_RS: {
 887                 struct scsi_per_res_in_header *hdr;
 888                 uint32_t hdr_len;
 889
 890                 if (valid_len < sizeof(*hdr)) {
 891                         warnx("%s: only got %d valid bytes, need %zd",
 892                               __func__, valid_len, sizeof(*hdr));
 893                         error = 1;
 894                         goto bailout;
 895                 }
 896                 hdr = (struct scsi_per_res_in_header *)res_buf;
 897                 hdr_len = scsi_4btoul(hdr->length);
 898
 899                 if (hdr_len > (res_len - sizeof(*hdr))) {
 900                         res_len = hdr_len + sizeof(*hdr);
 901                         goto retry;
 902                 }
 903
 904                 if (action == SPRI_RK) {
 905                         persist_print_keys(hdr, valid_len);
 906                 } else if (action == SPRI_RR) {
 907                         persist_print_res(hdr, valid_len);
 908                 } else {
 909                         persist_print_full(hdr, valid_len);
 910                 }
 911                 break;
 912         }
 913         case SPRI_RC: {
 914                 struct scsi_per_res_cap *cap;
 915                 uint32_t cap_len;
 916
 917                 if (valid_len < sizeof(*cap)) {
 918                         warnx("%s: only got %u valid bytes, need %zd",
 919                               __func__, valid_len, sizeof(*cap));
 920                         error = 1;
 921                         goto bailout;
 922                 }
 923                 cap = (struct scsi_per_res_cap *)res_buf;
 924                 cap_len = scsi_2btoul(cap->length);
 925                 if (cap_len != sizeof(*cap)) {
 926                         /*
 927                          * We should be able to deal with this,
 928                          * it's just more trouble.
 929                          */
 930                         warnx("%s: reported size %u is different "
 931                             "than expected size %zd", __func__,
 932                             cap_len, sizeof(*cap));
 933                 }
 934
 935                 /*
 936                  * If there is more data available, grab it all,
 937                  * even though we don't really know what to do with
 938                  * the extra data since it obviously wasn't in the
 939                  * spec when this code was written.
 940                  */
 941                 if (cap_len > res_len) {
 942                         res_len = cap_len;
 943                         goto retry;
 944                 }
 945                 persist_print_cap(cap, valid_len);
 946                 break;
 947         }
 948         default:
 949                 break;
 950         }
 951
 952 bailout:
 953         free(res_buf);
 954
 955         if (ccb != NULL)
 956                 cam_freeccb(ccb);
 957
 958         STAILQ_FOREACH_SAFE(id, &transport_id_list, links, id2) {
 959                 STAILQ_REMOVE(&transport_id_list, id, persist_transport_id,
 960                     links);
 961                 free(id);
 962         }
 963         return (error);
 964 }