text: /*
   * Copyright (c) 2004-2018 Douglas Gilbert.
   * All rights reserved.
   * Use of this source code is governed by a BSD-style
   * license that can be found in the BSD_LICENSE file.
   *
   * SPDX-License-Identifier: BSD-2-Clause
   */
  
  #include <unistd.h>
  #include <fcntl.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <stdbool.h>
  #include <string.h>
  #include <errno.h>
  #include <ctype.h>
  #include <getopt.h>
  #define __STDC_FORMAT_MACROS 1
  #include <inttypes.h>
  
  #ifdef HAVE_CONFIG_H
  #include "config.h"
  #endif
  #include "sg_lib.h"
  #include "sg_cmds_basic.h"
  #include "sg_unaligned.h"
  #include "sg_pr2serr.h"
  
  /* A utility program originally written for the Linux OS SCSI subsystem.
   *
   *
   * This program issues the SCSI REPORT LUNS command to the given SCSI device
   * and decodes the response.
   */
  
  static const char * version_str = "1.42 20180626";
  
  #define MAX_RLUNS_BUFF_LEN (1024 * 1024)
  #define DEF_RLUNS_BUFF_LEN (1024 * 8)
  
  
  static struct option long_options[] = {
          {"decode", no_argument, 0, 'd'},
          {"help", no_argument, 0, 'h'},
          {"hex", no_argument, 0, 'H'},
  #ifdef SG_LIB_LINUX
          {"linux", no_argument, 0, 'l'},
  #endif
          {"lu_cong", no_argument, 0, 'L'},
          {"lu-cong", no_argument, 0, 'L'},
          {"maxlen", required_argument, 0, 'm'},
          {"quiet", no_argument, 0, 'q'},
          {"raw", no_argument, 0, 'r'},
          {"readonly", no_argument, 0, 'R'},
          {"select", required_argument, 0, 's'},
          {"test", required_argument, 0, 't'},
          {"verbose", no_argument, 0, 'v'},
          {"version", no_argument, 0, 'V'},
          {0, 0, 0, 0},
  };
  
  
  static void
  usage()
  {
  #ifdef SG_LIB_LINUX
      pr2serr("Usage: sg_luns    [--decode] [--help] [--hex] [--linux] "
              "[--lu_cong]\n"
              "                  [--maxlen=LEN] [--quiet] [--raw] "
              "[--readonly]\n"
              "                  [--select=SR] [--verbose] [--version] "
              "DEVICE\n");
  #else
      pr2serr("Usage: sg_luns    [--decode] [--help] [--hex] [--lu_cong] "
              "[--maxlen=LEN]\n"
              "                  [--quiet] [--raw] [--readonly] "
              "[--select=SR]\n"
              "                  [--verbose] [--version] DEVICE\n");
  #endif
      pr2serr("     or\n"
              "       sg_luns    --test=ALUN [--decode] [--hex] [--lu_cong] "
              "[--verbose]\n"
              "  where:\n"
              "    --decode|-d        decode all luns into component parts\n"
              "    --help|-h          print out usage message\n"
              "    --hex|-H           output response in hexadecimal; used "
              "twice\n"
              "                       shows decoded values in hex\n");
  #ifdef SG_LIB_LINUX
      pr2serr("    --linux|-l         show Linux integer lun after T10 "
              "representation\n");
  #endif
      pr2serr("    --lu_cong|-L       decode as if LU_CONG is set; used "
              "twice:\n"
              "                       decode as if LU_CONG is clear\n"
              "    --maxlen=LEN|-m LEN    max response length (allocation "
              "length in cdb)\n"
              "                           (def: 0 -> %d bytes)\n"
              "    --quiet|-q         output only ASCII hex lun values\n"
              "    --raw|-r           output response in binary\n"
              "    --readonly|-R      open DEVICE read-only (def: read-write)\n"
              "    --select=SR|-s SR    select report SR (def: 0)\n"
              "                          0 -> luns apart from 'well "
              "known' lus\n"
              "                          1 -> only 'well known' "
              "logical unit numbers\n"
              "                          2 -> all luns\n"
              "                          0x10 -> administrative luns\n"
              "                          0x11 -> admin luns + "
              "non-conglomerate luns\n"
              "                          0x12 -> admin lun + its "
              "subsidiary luns\n"
              "    --test=ALUN|-t ALUN    decode ALUN and ignore most other "
              "options\n"
              "                           and DEVICE (apart from '-H')\n"
              "    --verbose|-v       increase verbosity\n"
              "    --version|-V       print version string and exit\n\n"
              "Performs a SCSI REPORT LUNS command or decodes the given ALUN. "
              "When SR is\n0x10 or 0x11 DEVICE must be LUN 0 or REPORT LUNS "
              "well known logical unit;\nwhen SR is 0x12 DEVICE must be an "
              "administrative logical unit. When the\n--test=ALUN option is "
              "given, decodes ALUN rather than sending a REPORT\nLUNS "
              "command.\n", DEF_RLUNS_BUFF_LEN );
  }
  
  /* Decoded according to SAM-5 rev 10. Note that one draft: BCC rev 0,
   * defines its own "bridge addressing method" in place of the SAM-3
   * "logical addressing method".  */
  static void
  decode_lun(const char * leadin, const uint8_t * lunp, bool lu_cong,
             int do_hex, int verbose)
  {
      bool next_level, admin_lu_cong;
      int k, x, a_method, bus_id, target, lun, len_fld, e_a_method;
      uint64_t ull;
      char l_leadin[128];
      char b[256];
  
      if (0xff == lunp[0]) {
          printf("%sLogical unit _not_ specified\n", leadin);
          return;
      }
      admin_lu_cong = lu_cong;
      memset(l_leadin, 0, sizeof(l_leadin));
      for (k = 0; k < 4; ++k, lunp += 2) {
          next_level = false;
          strncpy(l_leadin, leadin, sizeof(l_leadin) - 3);
          if (k > 0) {
              if (lu_cong) {
                  admin_lu_cong = false;
                  if ((0 == lunp[0]) && (0 == lunp[1])) {
                      printf("%s>>>> Administrative LU\n", l_leadin);
                      if (do_hex || verbose)
                           printf("        since Subsidiary element is "
                                  "0x0000\n");
                      break;
                  } else
                      printf("%s>>Subsidiary element:\n", l_leadin);
              } else
                  printf("%s>>%s level addressing:\n", l_leadin, ((1 == k) ?
                           "Second" : ((2 == k) ? "Third" : "Fourth")));
              strcat(l_leadin, "  ");
          } else if (lu_cong) {
              printf("%s>>Administrative element:\n", l_leadin);
              strcat(l_leadin, "  ");
          }
          a_method = (lunp[0] >> 6) & 0x3;
          switch (a_method) {
          case 0:         /* peripheral device addressing method */
              if (lu_cong) {
                  snprintf(b, sizeof(b), "%sSimple lu addressing: ",
                           l_leadin);
                  x = 0x3fff & sg_get_unaligned_be16(lunp + 0);
                  if (do_hex)
                      printf("%s0x%04x\n", b, x);
                  else
                      printf("%s%d\n", b, x);
                  if (admin_lu_cong)
                      next_level = true;
              } else {
                  bus_id = lunp[0] & 0x3f;
                  snprintf(b, sizeof(b), "%sPeripheral device addressing: ",
                           l_leadin);
                  if ((0 == bus_id) && (0 == verbose)) {
                      if (do_hex)
                          printf("%slun=0x%02x\n", b, lunp[1]);
                      else
                          printf("%slun=%d\n", b, lunp[1]);
                  } else {
                      if (do_hex)
                          printf("%sbus_id=0x%02x, %s=0x%02x\n", b, bus_id,
                                 (bus_id ? "target" : "lun"), lunp[1]);
                      else
                          printf("%sbus_id=%d, %s=%d\n", b, bus_id,
                                 (bus_id ? "target" : "lun"), lunp[1]);
                  }
                  if (bus_id)
                      next_level = true;
              }
              break;
          case 1:         /* flat space addressing method */
              lun = 0x3fff & sg_get_unaligned_be16(lunp + 0);
              if (lu_cong) {
                  printf("%sSince LU_CONG=1, unexpected Flat space "
                         "addressing: lun=0x%04x\n", l_leadin, lun);
                  break;
              }
              if (do_hex)
                  printf("%sFlat space addressing: lun=0x%04x\n", l_leadin,
                         lun);
              else
                  printf("%sFlat space addressing: lun=%d\n", l_leadin, lun);
              break;
          case 2:         /* logical unit addressing method */
              target = (lunp[0] & 0x3f);
              bus_id = (lunp[1] >> 5) & 0x7;
              lun = lunp[1] & 0x1f;
              if (lu_cong) {
                  printf("%sSince LU_CONG=1, unexpected lu addressing: "
                         "bus_id=0x%x, target=0x%02x, lun=0x%02x\n", l_leadin,
                         bus_id, target, lun);
                  break;
              }
              if (do_hex)
                  printf("%sLogical unit addressing: bus_id=0x%x, "
                         "target=0x%02x, lun=0x%02x\n", l_leadin, bus_id,
                         target, lun);
              else
                  printf("%sLogical unit addressing: bus_id=%d, target=%d, "
                         "lun=%d\n", l_leadin, bus_id, target, lun);
              break;
          case 3:         /* extended logical unit + flat space addressing */
              len_fld = (lunp[0] & 0x30) >> 4;
              e_a_method = lunp[0] & 0xf;
              x = lunp[1];
              if ((0 == len_fld) && (1 == e_a_method)) {
                  snprintf(b, sizeof(b), "well known logical unit");
                  switch (x) {
                  case 1:
                      printf("%sREPORT LUNS %s\n", l_leadin, b);
                      break;
                  case 2:         /* obsolete in spc5r01 */
                      printf("%sACCESS CONTROLS %s\n", l_leadin, b);
                      break;
                  case 3:
                      printf("%sTARGET LOG PAGES %s\n", l_leadin, b);
                      break;
                  case 4:
                      printf("%sSECURITY PROTOCOL %s\n", l_leadin, b);
                      break;
                  case 5:
                      printf("%sMANAGEMENT PROTOCOL %s\n", l_leadin, b);
                      break;
                  default:
                      if (do_hex)
                          printf("%s%s 0x%02x\n", l_leadin, b, x);
                      else
                          printf("%s%s %d\n", l_leadin, b, x);
                      break;
                  }
              } else if ((1 == len_fld) && (2 == e_a_method)) {
                  x = sg_get_unaligned_be24(lunp + 1);
                  if (do_hex)
                      printf("%sExtended flat space addressing: lun=0x%06x\n",
                             l_leadin, x);
                  else
                      printf("%sExtended flat space addressing: lun=%d\n",
                             l_leadin, x);
              } else if ((2 == len_fld) && (2 == e_a_method)) {
                  ull = sg_get_unaligned_be(5, lunp + 1);
                  if (do_hex)
                      printf("%sLong extended flat space addressing: "
                             "lun=0x%010" PRIx64 "\n", l_leadin, ull);
                  else
                      printf("%sLong extended flat space addressing: "
                             "lun=%" PRIu64 "\n", l_leadin, ull);
              } else if ((3 == len_fld) && (0xf == e_a_method))
                  printf("%sLogical unit _not_ specified addressing\n",
                         l_leadin);
              else {
                  if (len_fld < 2) {
                      if (1 == len_fld)
                          x = sg_get_unaligned_be24(lunp + 1);
                      if (do_hex)
                          printf("%sExtended logical unit addressing: "
                                 "length=%d, e.a. method=%d, value=0x%06x\n",
                                 l_leadin, len_fld, e_a_method, x);
                      else
                          printf("%sExtended logical unit addressing: "
                                 "length=%d, e.a. method=%d, value=%d\n",
                                 l_leadin, len_fld, e_a_method, x);
                  } else {
                      ull = sg_get_unaligned_be(((2 == len_fld) ? 5 : 7),
                                                lunp + 1);
                      if (do_hex) {
                          printf("%sExtended logical unit addressing: "
                                 "length=%d, e. a. method=%d, ", l_leadin,
                                 len_fld, e_a_method);
                          if (5 == len_fld)
                                  printf("value=0x%010" PRIx64 "\n", ull);
                          else
                                  printf("value=0x%014" PRIx64 "\n", ull);
                      } else
                          printf("%sExtended logical unit addressing: "
                                 "length=%d, e. a. method=%d, value=%" PRIu64
                                 "\n", l_leadin, len_fld, e_a_method, ull);
                  }
              }
              break;
          default:
              printf("%s<<%s: faulty logic>>\n", l_leadin, __func__);
              break;
          }
          if (next_level)
              continue;
          if ((2 == a_method) && (k < 3) && (lunp[2] || lunp[3]))
              printf("%s<<unexpected data at next level, continue>>\n",
                     l_leadin);
          break;
      }
  }
  
  #ifdef SG_LIB_LINUX
  static void
  linux2t10_lun(uint64_t linux_lun, uint8_t t10_lun[])
  {
      int k;
  
      for (k = 0; k < 8; k += 2, linux_lun >>= 16)
          sg_put_unaligned_be16((uint16_t)linux_lun, t10_lun + k);
  }
  
  static uint64_t
  t10_2linux_lun(const uint8_t t10_lun[])
  {
      int k;
      const uint8_t * cp;
      uint64_t res;
  
      res = sg_get_unaligned_be16(t10_lun + 6);
      for (cp = t10_lun + 4, k = 0; k < 3; ++k, cp -= 2)
          res = (res << 16) + sg_get_unaligned_be16(cp);
      return res;
  }
  #endif  /* SG_LIB_LINUX */
  
  
  static void
  dStrRaw(const char * str, int len)
  {
      int k;
  
      for (k = 0; k < len; ++k)
          printf("%c", str[k]);
  }
  
  int
  main(int argc, char * argv[])
  {
  #ifdef SG_LIB_LINUX
      bool do_linux = false;
  #endif
      bool do_quiet = false;
      bool do_raw = false;
      bool lu_cong_arg_given = false;
      bool o_readonly = false;
  #ifdef SG_LIB_LINUX
      bool test_linux_in = false;
      bool test_linux_out = false;
  #endif
      bool trunc;
      bool verbose_given = false;
      bool version_given = false;
      int sg_fd, k, m, off, res, c, list_len, len_cap, luns;
      int decode_arg = 0;
      int do_hex = 0;
      int lu_cong_arg = 0;
      int maxlen = 0;
      int ret = 0;
      int select_rep = 0;
      int verbose = 0;
      unsigned int h;
      const char * test_arg = NULL;
      const char * device_name = NULL;
      const char * cp;
      uint8_t * reportLunsBuff = NULL;
      uint8_t * free_reportLunsBuff = NULL;
      uint8_t lun_arr[8];
      struct sg_simple_inquiry_resp sir;
  
      while (1) {
          int option_index = 0;
  
  #ifdef SG_LIB_LINUX
          c = getopt_long(argc, argv, "dhHlLm:qrRs:t:vV", long_options,
                          &option_index);
  #else
          c = getopt_long(argc, argv, "dhHLm:qrRs:t:vV", long_options,
                          &option_index);
  #endif
          if (c == -1)
              break;
  
          switch (c) {
          case 'd':
              ++decode_arg;
              break;
          case 'h':
          case '?':
              usage();
              return 0;
          case 'H':
              ++do_hex;
              break;
  #ifdef SG_LIB_LINUX
          case 'l':
              do_linux = false;
              break;
  #endif
          case 'L':
              ++lu_cong_arg;
              lu_cong_arg_given = true;
              break;
          case 'm':
              maxlen = sg_get_num(optarg);
              if ((maxlen < 0) || (maxlen > MAX_RLUNS_BUFF_LEN)) {
                  pr2serr("argument to '--maxlen' should be %d or less\n",
                          MAX_RLUNS_BUFF_LEN);
                  return SG_LIB_SYNTAX_ERROR;
              }
              break;
          case 'q':
              do_quiet = true;
              break;
          case 'r':
              do_raw = true;
              break;
          case 'R':
              o_readonly = true;
              break;
          case 's':
             select_rep = sg_get_num(optarg);
             if ((select_rep < 0) || (select_rep > 255)) {
                  pr2serr("bad argument to '--select', expect 0 to 255\n");
                  return SG_LIB_SYNTAX_ERROR;
              }
              break;
          case 't':
              test_arg = optarg;
              break;
          case 'v':
              verbose_given = true;
              ++verbose;
              break;
          case 'V':
              version_given = true;
              break;
          default:
              pr2serr("unrecognised option code 0x%x ??\n", c);
              usage();
              return SG_LIB_SYNTAX_ERROR;
          }
      }
      if (optind < argc) {
          if (NULL == device_name) {
              device_name = argv[optind];
              ++optind;
          }
          if (optind < argc) {
              for (; optind < argc; ++optind)
                  pr2serr("Unexpected extra argument: %s\n", argv[optind]);
              usage();
              return SG_LIB_SYNTAX_ERROR;
          }
      }
  #ifdef DEBUG
      pr2serr("In DEBUG mode, ");
      if (verbose_given && version_given) {
          pr2serr("but override: '-vV' given, zero verbose and continue\n");
          verbose_given = false;
          version_given = false;
          verbose = 0;
      } else if (! verbose_given) {
          pr2serr("set '-vv'\n");
          verbose = 2;
      } else
          pr2serr("keep verbose=%d\n", verbose);
  #else
      if (verbose_given && version_given)
          pr2serr("Not in DEBUG mode, so '-vV' has no special action\n");
  #endif
      if (version_given) {
          pr2serr("version: %s\n", version_str);
          return 0;
      }
  
      if (test_arg) {
          memset(lun_arr, 0, sizeof(lun_arr));
          cp = test_arg;
          /* check for leading 'L' */
  #ifdef SG_LIB_LINUX
          if ('L' == toupper(cp[0])) {
              uint64_t ull;
  
              if (('0' == cp[1]) && ('X' == toupper(cp[2])))
                  k = sscanf(cp + 3, " %" SCNx64, &ull);
              else
                  k = sscanf(cp + 1, " %" SCNu64, &ull);
              if (1 != k) {
                  pr2serr("Unable to read Linux style LUN integer given to "
                          "--test=\n");
                  return SG_LIB_SYNTAX_ERROR;
              }
              linux2t10_lun(ull, lun_arr);
              test_linux_in = true;
          } else
  #endif
          {
              /* Check if trailing 'L' */
  #ifdef SG_LIB_LINUX
              m = strlen(cp);    /* must be at least 1 char in test_arg */
              if ('L' == toupper(cp[m - 1]))
                  test_linux_out = true;
  #endif
              if (('0' == cp[0]) && ('X' == toupper(cp[1])))
                  cp += 2;
              if (strchr(cp, ' ') || strchr(cp, '\t') || strchr(cp, '-')) {
                  for (k = 0; k < 8; ++k, cp += 2) {
                      c = *cp;
                      if ('\0' == c)
                          break;
                      else if (! isxdigit(c))
                          ++cp;
                      if (1 != sscanf(cp, "%2x", &h))
                          break;
                      lun_arr[k] = h & 0xff;
                  }
              } else {
                  for (k = 0; k < 8; ++k, cp += 2) {
                  if (1 != sscanf(cp, "%2x", &h))
                          break;
                      lun_arr[k] = h & 0xff;
                  }
              }
              if (0 == k) {
                  pr2serr("expected a hex number, optionally prefixed by "
                          "'0x'\n");
                  return SG_LIB_SYNTAX_ERROR;
              }
          }
  #ifdef SG_LIB_LINUX
          if (verbose || test_linux_in || decode_arg)
  #else
          if (verbose || decode_arg)
  #endif
          {
              if (decode_arg > 1) {
                  printf("64 bit LUN in T10 (hex, dashed) format: ");
                  for (k = 0; k < 8; k += 2)
                      printf("%c%02x%02x", (k ? '-' : ' '), lun_arr[k],
                             lun_arr[k + 1]);
              } else {
                  printf("64 bit LUN in T10 preferred (hex) format: ");
                  for (k = 0; k < 8; ++k)
                      printf(" %02x", lun_arr[k]);
              }
              printf("\n");
          }
  #ifdef SG_LIB_LINUX
          if (test_linux_out) {
              if (do_hex > 1)
                  printf("Linux 'word flipped' integer LUN representation: "
                         "0x%016" PRIx64 "\n", t10_2linux_lun(lun_arr));
              else if (do_hex)
                  printf("Linux 'word flipped' integer LUN representation: 0x%"
                         PRIx64 "\n", t10_2linux_lun(lun_arr));
              else
                  printf("Linux 'word flipped' integer LUN representation: %"
                         PRIu64 "\n", t10_2linux_lun(lun_arr));
          }
  #endif
          printf("Decoded LUN:\n");
          decode_lun("  ", lun_arr, (lu_cong_arg % 2), do_hex, verbose);
          return 0;
      }
      if (NULL == device_name) {
          pr2serr("missing device name!\n");
          usage();
          return SG_LIB_SYNTAX_ERROR;
      }
  
      if (do_raw) {
          if (sg_set_binary_mode(STDOUT_FILENO) < 0) {
              perror("sg_set_binary_mode");
              return SG_LIB_FILE_ERROR;
          }
      }
  
      sg_fd = sg_cmds_open_device(device_name, o_readonly, verbose);
      if (sg_fd < 0) {
          pr2serr("open error: %s: %s\n", device_name, safe_strerror(-sg_fd));
          return sg_convert_errno(-sg_fd);
      }
      if (decode_arg && (! lu_cong_arg_given)) {
          if (verbose > 1)
              pr2serr("in order to decode LUN and since --lu_cong not given, "
                      "do standard\nINQUIRY to find LU_CONG bit\n");
          /* check if LU_CONG set in standard INQUIRY response */
          res = sg_simple_inquiry(sg_fd, &sir, false, verbose);
          ret = res;
          if (res) {
              pr2serr("fetching standard INQUIRY response failed\n");
              goto the_end;
          }
          lu_cong_arg = !!(0x40 & sir.byte_1);
          if (verbose && lu_cong_arg)
              pr2serr("LU_CONG bit set in standard INQUIRY response\n");
      }
  
      if (0 == maxlen)
          maxlen = DEF_RLUNS_BUFF_LEN;
      reportLunsBuff = (uint8_t *)sg_memalign(maxlen, 0, &free_reportLunsBuff,
                                              verbose > 3);
      if (NULL == reportLunsBuff) {
          pr2serr("unable to sg_memalign %d bytes\n", maxlen);
          return sg_convert_errno(ENOMEM);
      }
      trunc = false;
  
      res = sg_ll_report_luns(sg_fd, select_rep, reportLunsBuff, maxlen, true,
                              verbose);
      ret = res;
      if (0 == res) {
          list_len = sg_get_unaligned_be32(reportLunsBuff + 0);
          len_cap = list_len + 8;
          if (len_cap > maxlen)
              len_cap = maxlen;
          if (do_raw) {
              dStrRaw((const char *)reportLunsBuff, len_cap);
              goto the_end;
          }
          if (1 == do_hex) {
              hex2stdout(reportLunsBuff, len_cap, 1);
              goto the_end;
          }
          luns = (list_len / 8);
          if (! do_quiet)
              printf("Lun list length = %d which imples %d lun entr%s\n",
                     list_len, luns, ((1 == luns) ? "y" : "ies"));
          if ((list_len + 8) > maxlen) {
              luns = ((maxlen - 8) / 8);
              trunc = true;
              pr2serr("  <<too many luns for internal buffer, will show %d "
                      "lun%s>>\n", luns, ((1 == luns) ? "" : "s"));
          }
          if (verbose > 1) {
              pr2serr("\nOutput response in hex\n");
              hex2stderr(reportLunsBuff, (trunc ? maxlen : list_len + 8), 1);
          }
          for (k = 0, off = 8; k < luns; ++k, off += 8) {
              if (! do_quiet) {
                  if (0 == k)
                      printf("Report luns [select_report=0x%x]:\n", select_rep);
                  printf("    ");
              }
              for (m = 0; m < 8; ++m)
                  printf("%02x", reportLunsBuff[off + m]);
  #ifdef SG_LIB_LINUX
              if (do_linux) {
                  uint64_t lin_lun;
  
                  lin_lun = t10_2linux_lun(reportLunsBuff + off);
                  if (do_hex > 1)
                      printf("    [0x%" PRIx64 "]", lin_lun);
                  else
                      printf("    [%" PRIu64 "]", lin_lun);
              }
  #endif
              printf("\n");
              if (decode_arg)
                  decode_lun("      ", reportLunsBuff + off,
                             (bool)(lu_cong_arg % 2), do_hex, verbose);
          }
      } else if (SG_LIB_CAT_INVALID_OP == res)
          pr2serr("Report Luns command not supported (support mandatory in "
                  "SPC-3)\n");
      else if (SG_LIB_CAT_ABORTED_COMMAND == res)
          pr2serr("Report Luns, aborted command\n");
      else if (SG_LIB_CAT_ILLEGAL_REQ == res)
          pr2serr("Report Luns command has bad field in cdb\n");
      else {
          char b[80];
  
          sg_get_category_sense_str(res, sizeof(b), b, verbose);
          pr2serr("Report Luns command: %s\n", b);
      }
  
  the_end:
      if (free_reportLunsBuff)
          free(free_reportLunsBuff);
      res = sg_cmds_close_device(sg_fd);
      if (res < 0) {
          pr2serr("close error: %s\n", safe_strerror(-res));
          if (0 == ret)
              return sg_convert_errno(-res);
      }
      if (0 == verbose) {
          if (! sg_if_can2stderr("sg_luns failed: ", ret))
              pr2serr("Some error occurred, try again with '-v' or '-vv' for "
                      "more information\n");
      }
      return (ret >= 0) ? ret : SG_LIB_CAT_OTHER;
  }
  