usr.sbin/sesutil/sesutil.c

   1 /*-
   2  * Copyright (c) 2015 Baptiste Daroussin <bapt@FreeBSD.org>
   3  * Copyright (c) 2015 Allan Jude <allanjude@FreeBSD.org>
   4  * Copyright (c) 2000 by Matthew Jacob
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer
  12  *    in this position and unchanged.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __FBSDID("$FreeBSD$");
  31
  32 #include <sys/endian.h>
  33 #include <sys/param.h>
  34 #include <sys/ioctl.h>
  35 #include <sys/types.h>
  36
  37 #include <err.h>
  38 #include <errno.h>
  39 #include <fcntl.h>
  40 #include <getopt.h>
  41 #include <glob.h>
  42 #include <stdbool.h>
  43 #include <stddef.h>
  44 #include <stdint.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <unistd.h>
  49 #include <libxo/xo.h>
  50
  51 #include <cam/scsi/scsi_enc.h>
  52
  53 #include "eltsub.h"
  54
  55 #define SESUTIL_XO_VERSION      "1"
  56
  57 static int encstatus(int argc, char **argv);
  58 static int fault(int argc, char **argv);
  59 static int locate(int argc, char **argv);
  60 static int objmap(int argc, char **argv);
  61 static int sesled(int argc, char **argv, bool fault);
  62 static void sesutil_print(bool *title, const char *fmt, ...) __printflike(2,3);
  63
  64 static struct command {
  65         const char *name;
  66         const char *param;
  67         const char *desc;
  68         int (*exec)(int argc, char **argv);
  69 } cmds[] = {
  70         { "fault",
  71             "(<disk>|<sesid>|all) (on|off)",
  72             "Change the state of the fault LED associated with a disk",
  73             fault },
  74         { "locate",
  75             "(<disk>|<sesid>|all) (on|off)",
  76             "Change the state of the locate LED associated with a disk",
  77             locate },
  78         { "map", "",
  79             "Print a map of the devices managed by the enclosure", objmap } ,
  80         { "status", "", "Print the status of the enclosure",
  81             encstatus },
  82 };
  83
  84 static const int nbcmds = nitems(cmds);
  85 static const char *uflag;
  86
  87 static void
  88 usage(FILE *out, const char *subcmd)
  89 {
  90         int i;
  91
  92         if (subcmd == NULL) {
  93                 fprintf(out, "Usage: %s [-u /dev/ses<N>] <command> [options]\n",
  94                     getprogname());
  95                 fprintf(out, "Commands supported:\n");
  96         }
  97         for (i = 0; i < nbcmds; i++) {
  98                 if (subcmd != NULL) {
  99                         if (strcmp(subcmd, cmds[i].name) == 0) {
 100                                 fprintf(out, "Usage: %s %s [-u /dev/ses<N>] "
 101                                     "%s\n\t%s\n", getprogname(), subcmd,
 102                                     cmds[i].param, cmds[i].desc);
 103                                 break;
 104                         }
 105                         continue;
 106                 }
 107                 fprintf(out, "    %-12s%s\n\t\t%s\n\n", cmds[i].name,
 108                     cmds[i].param, cmds[i].desc);
 109         }
 110
 111         exit(EXIT_FAILURE);
 112 }
 113
 114 static void
 115 do_led(int fd, unsigned int idx, elm_type_t type, bool onoff, bool setfault)
 116 {
 117         int state = onoff ? 1 : 0;
 118         encioc_elm_status_t o;
 119         struct ses_ctrl_dev_slot *slot;
 120
 121         o.elm_idx = idx;
 122         if (ioctl(fd, ENCIOC_GETELMSTAT, (caddr_t) &o) < 0) {
 123                 close(fd);
 124                 xo_err(EXIT_FAILURE, "ENCIOC_GETELMSTAT");
 125         }
 126         slot = (struct ses_ctrl_dev_slot *) &o.cstat[0];
 127         switch (type) {
 128         case ELMTYP_DEVICE:
 129         case ELMTYP_ARRAY_DEV:
 130                 ses_ctrl_common_set_select(&slot->common, 1);
 131                 if (setfault)
 132                         ses_ctrl_dev_slot_set_rqst_fault(slot, state);
 133                 else
 134                         ses_ctrl_dev_slot_set_rqst_ident(slot, state);
 135                 break;
 136         default:
 137                 return;
 138         }
 139         if (ioctl(fd, ENCIOC_SETELMSTAT, (caddr_t) &o) < 0) {
 140                 close(fd);
 141                 xo_err(EXIT_FAILURE, "ENCIOC_SETELMSTAT");
 142         }
 143 }
 144
 145 static bool
 146 disk_match(const char *devnames, const char *disk, size_t len)
 147 {
 148         const char *dname;
 149
 150         dname = devnames;
 151         while ((dname = strstr(dname, disk)) != NULL) {
 152                 if (dname[len] == '\0' || dname[len] == ',') {
 153                         return (true);
 154                 }
 155                 dname++;
 156         }
 157
 158         return (false);
 159 }
 160
 161 static int
 162 sesled(int argc, char **argv, bool setfault)
 163 {
 164         encioc_elm_devnames_t objdn;
 165         encioc_element_t *objp;
 166         glob_t g;
 167         char *disk, *endptr;
 168         size_t len, i, ndisks;
 169         int fd;
 170         unsigned int nobj, j, sesid;
 171         bool all, isses, onoff;
 172
 173         isses = false;
 174         all = false;
 175         onoff = false;
 176
 177         if (argc != 3) {
 178                 usage(stderr, (setfault ? "fault" : "locate"));
 179         }
 180
 181         disk = argv[1];
 182
 183         sesid = strtoul(disk, &endptr, 10);
 184         if (*endptr == '\0') {
 185                 endptr = strrchr(uflag, '*');
 186                 if (endptr != NULL && *endptr == '*') {
 187                         xo_warnx("Must specifying a SES device (-u) to use a SES "
 188                             "id# to identify a disk");
 189                         usage(stderr, (setfault ? "fault" : "locate"));
 190                 }
 191                 isses = true;
 192         }
 193
 194         if (strcmp(argv[2], "on") == 0) {
 195                 onoff = true;
 196         } else if (strcmp(argv[2], "off") == 0) {
 197                 onoff = false;
 198         } else {
 199                 usage(stderr, (setfault ? "fault" : "locate"));
 200         }
 201
 202         if (strcmp(disk, "all") == 0) {
 203                 all = true;
 204         }
 205         len = strlen(disk);
 206
 207         /* Get the list of ses devices */
 208         if (glob((uflag != NULL ? uflag : "/dev/ses[0-9]*"), 0, NULL, &g) ==
 209             GLOB_NOMATCH) {
 210                 globfree(&g);
 211                 xo_errx(EXIT_FAILURE, "No SES devices found");
 212         }
 213
 214         ndisks = 0;
 215         for (i = 0; i < g.gl_pathc; i++) {
 216                 /* ensure we only got numbers after ses */
 217                 if (strspn(g.gl_pathv[i] + 8, "0123456789") !=
 218                     strlen(g.gl_pathv[i] + 8)) {
 219                         continue;
 220                 }
 221                 if ((fd = open(g.gl_pathv[i], O_RDWR)) < 0) {
 222                         /*
 223                          * Don't treat non-access errors as critical if we are
 224                          * accessing all devices
 225                          */
 226                         if (errno == EACCES && g.gl_pathc > 1) {
 227                                 xo_err(EXIT_FAILURE, "unable to access SES device");
 228                         }
 229                         xo_warn("unable to access SES device: %s", g.gl_pathv[i]);
 230                         continue;
 231                 }
 232
 233                 if (ioctl(fd, ENCIOC_GETNELM, (caddr_t) &nobj) < 0) {
 234                         close(fd);
 235                         xo_err(EXIT_FAILURE, "ENCIOC_GETNELM");
 236                 }
 237
 238                 objp = calloc(nobj, sizeof(encioc_element_t));
 239                 if (objp == NULL) {
 240                         close(fd);
 241                         xo_err(EXIT_FAILURE, "calloc()");
 242                 }
 243
 244                 if (ioctl(fd, ENCIOC_GETELMMAP, (caddr_t) objp) < 0) {
 245                         close(fd);
 246                         xo_err(EXIT_FAILURE, "ENCIOC_GETELMMAP");
 247                 }
 248
 249                 if (isses) {
 250                         if (sesid > nobj) {
 251                                 close(fd);
 252                                 xo_errx(EXIT_FAILURE,
 253                                      "Requested SES ID does not exist");
 254                         }
 255                         do_led(fd, sesid, objp[sesid].elm_type, onoff, setfault);
 256                         ndisks++;
 257                         close(fd);
 258                         break;
 259                 }
 260                 for (j = 0; j < nobj; j++) {
 261                         if (all) {
 262                                 do_led(fd, objp[j].elm_idx, objp[j].elm_type,
 263                                     onoff, setfault);
 264                                 continue;
 265                         }
 266                         memset(&objdn, 0, sizeof(objdn));
 267                         objdn.elm_idx = objp[j].elm_idx;
 268                         objdn.elm_names_size = 128;
 269                         objdn.elm_devnames = calloc(128, sizeof(char));
 270                         if (objdn.elm_devnames == NULL) {
 271                                 close(fd);
 272                                 xo_err(EXIT_FAILURE, "calloc()");
 273                         }
 274                         if (ioctl(fd, ENCIOC_GETELMDEVNAMES,
 275                             (caddr_t) &objdn) <0) {
 276                                 continue;
 277                         }
 278                         if (objdn.elm_names_len > 0) {
 279                                 if (disk_match(objdn.elm_devnames, disk, len)) {
 280                                         do_led(fd, objdn.elm_idx, objp[j].elm_type,
 281                                             onoff, setfault);
 282                                         ndisks++;
 283                                         break;
 284                                 }
 285                         }
 286                 }
 287                 free(objp);
 288                 close(fd);
 289         }
 290         globfree(&g);
 291         if (ndisks == 0 && all == false) {
 292                 xo_errx(EXIT_FAILURE, "Count not find the SES id of device '%s'",
 293                     disk);
 294         }
 295
 296         return (EXIT_SUCCESS);
 297 }
 298
 299 static int
 300 locate(int argc, char **argv)
 301 {
 302
 303         return (sesled(argc, argv, false));
 304 }
 305
 306 static int
 307 fault(int argc, char **argv)
 308 {
 309
 310         return (sesled(argc, argv, true));
 311 }
 312
 313 #define TEMPERATURE_OFFSET 20
 314 static void
 315 sesutil_print(bool *title, const char *fmt, ...)
 316 {
 317         va_list args;
 318
 319         if (!*title) {
 320                 xo_open_container("extra_status");
 321                 xo_emit("\t\tExtra status:\n");
 322                 *title = true;
 323         }
 324         va_start(args, fmt);
 325         xo_emit_hv(NULL, fmt, args);
 326         va_end(args);
 327 }
 328
 329 static void
 330 print_extra_status(int eletype, u_char *cstat)
 331 {
 332         bool title = false;
 333
 334         if (cstat[0] & 0x40) {
 335                 sesutil_print(&title, "\t\t-{e:predicted_failure/true} Predicted Failure\n");
 336         }
 337         if (cstat[0] & 0x20) {
 338                 sesutil_print(&title, "\t\t-{e:disabled/true} Disabled\n");
 339         }
 340         if (cstat[0] & 0x10) {
 341                 sesutil_print(&title, "\t\t-{e:swapped/true} Swapped\n");
 342         }
 343         switch (eletype) {
 344         case ELMTYP_DEVICE:
 345         case ELMTYP_ARRAY_DEV:
 346                 if (cstat[2] & 0x02) {
 347                         sesutil_print(&title, "\t\t- LED={q:led/locate}\n");
 348                 }
 349                 if (cstat[2] & 0x20) {
 350                         sesutil_print(&title, "\t\t- LED={q:led/fault}\n");
 351                 }
 352                 break;
 353         case ELMTYP_FAN:
 354                 sesutil_print(&title, "\t\t- Speed: {:speed/%d}{Uw:rpm}\n",
 355                     (((0x7 & cstat[1]) << 8) + cstat[2]) * 10);
 356                 break;
 357         case ELMTYP_THERM:
 358                 if (cstat[2]) {
 359                         sesutil_print(&title, "\t\t- Temperature: {:temperature/%d}{Uw:C}\n",
 360                             cstat[2] - TEMPERATURE_OFFSET);
 361                 } else {
 362                         sesutil_print(&title, "\t\t- Temperature: -{q:temperature/reserved}-\n");
 363                 }
 364                 break;
 365         case ELMTYP_VOM:
 366                 sesutil_print(&title, "\t\t- Voltage: {:voltage/%.2f}{Uw:V}\n",
 367                     be16dec(cstat + 2) / 100.0);
 368                 break;
 369         }
 370         if (title) {
 371                 xo_close_container("extra_status");
 372         }
 373 }
 374
 375 static int
 376 objmap(int argc, char **argv __unused)
 377 {
 378         encioc_string_t stri;
 379         encioc_elm_devnames_t e_devname;
 380         encioc_elm_status_t e_status;
 381         encioc_elm_desc_t e_desc;
 382         encioc_element_t *e_ptr;
 383         glob_t g;
 384         int fd;
 385         unsigned int j, nobj;
 386         size_t i;
 387         char str[32];
 388
 389         if (argc != 1) {
 390                 usage(stderr, "map");
 391         }
 392
 393         /* Get the list of ses devices */
 394         if (glob(uflag, 0, NULL, &g) == GLOB_NOMATCH) {
 395                 globfree(&g);
 396                 xo_errx(EXIT_FAILURE, "No SES devices found");
 397         }
 398         xo_set_version(SESUTIL_XO_VERSION);
 399         xo_open_container("sesutil");
 400         xo_open_list("enclosures");
 401         for (i = 0; i < g.gl_pathc; i++) {
 402                 /* ensure we only got numbers after ses */
 403                 if (strspn(g.gl_pathv[i] + 8, "0123456789") !=
 404                     strlen(g.gl_pathv[i] + 8)) {
 405                         continue;
 406                 }
 407                 if ((fd = open(g.gl_pathv[i], O_RDWR)) < 0) {
 408                         /*
 409                          * Don't treat non-access errors as critical if we are
 410                          * accessing all devices
 411                          */
 412                         if (errno == EACCES && g.gl_pathc > 1) {
 413                                 xo_err(EXIT_FAILURE, "unable to access SES device");
 414                         }
 415                         xo_warn("unable to access SES device: %s", g.gl_pathv[i]);
 416                         continue;
 417                 }
 418
 419                 if (ioctl(fd, ENCIOC_GETNELM, (caddr_t) &nobj) < 0) {
 420                         close(fd);
 421                         xo_err(EXIT_FAILURE, "ENCIOC_GETNELM");
 422                 }
 423
 424                 e_ptr = calloc(nobj, sizeof(encioc_element_t));
 425                 if (e_ptr == NULL) {
 426                         close(fd);
 427                         xo_err(EXIT_FAILURE, "calloc()");
 428                 }
 429
 430                 if (ioctl(fd, ENCIOC_GETELMMAP, (caddr_t) e_ptr) < 0) {
 431                         close(fd);
 432                         xo_err(EXIT_FAILURE, "ENCIOC_GETELMMAP");
 433                 }
 434
 435                 xo_open_instance("enclosures");
 436                 xo_emit("{t:enc/%s}:\n", g.gl_pathv[i] + 5);
 437                 stri.bufsiz = sizeof(str);
 438                 stri.buf = &str[0];
 439                 if (ioctl(fd, ENCIOC_GETENCNAME, (caddr_t) &stri) == 0)
 440                         xo_emit("\tEnclosure Name: {t:name/%s}\n", stri.buf);
 441                 stri.bufsiz = sizeof(str);
 442                 stri.buf = &str[0];
 443                 if (ioctl(fd, ENCIOC_GETENCID, (caddr_t) &stri) == 0)
 444                         xo_emit("\tEnclosure ID: {t:id/%s}\n", stri.buf);
 445
 446                 xo_open_list("elements");
 447                 for (j = 0; j < nobj; j++) {
 448                         /* Get the status of the element */
 449                         memset(&e_status, 0, sizeof(e_status));
 450                         e_status.elm_idx = e_ptr[j].elm_idx;
 451                         if (ioctl(fd, ENCIOC_GETELMSTAT,
 452                             (caddr_t) &e_status) < 0) {
 453                                 close(fd);
 454                                 xo_err(EXIT_FAILURE, "ENCIOC_GETELMSTAT");
 455                         }
 456                         /* Get the description of the element */
 457                         memset(&e_desc, 0, sizeof(e_desc));
 458                         e_desc.elm_idx = e_ptr[j].elm_idx;
 459                         e_desc.elm_desc_len = UINT16_MAX;
 460                         e_desc.elm_desc_str = calloc(UINT16_MAX, sizeof(char));
 461                         if (e_desc.elm_desc_str == NULL) {
 462                                 close(fd);
 463                                 xo_err(EXIT_FAILURE, "calloc()");
 464                         }
 465                         if (ioctl(fd, ENCIOC_GETELMDESC,
 466                             (caddr_t) &e_desc) < 0) {
 467                                 close(fd);
 468                                 xo_err(EXIT_FAILURE, "ENCIOC_GETELMDESC");
 469                         }
 470                         /* Get the device name(s) of the element */
 471                         memset(&e_devname, 0, sizeof(e_devname));
 472                         e_devname.elm_idx = e_ptr[j].elm_idx;
 473                         e_devname.elm_names_size = 128;
 474                         e_devname.elm_devnames = calloc(128, sizeof(char));
 475                         if (e_devname.elm_devnames == NULL) {
 476                                 close(fd);
 477                                 xo_err(EXIT_FAILURE, "calloc()");
 478                         }
 479                         if (ioctl(fd, ENCIOC_GETELMDEVNAMES,
 480                             (caddr_t) &e_devname) <0) {
 481                                 /* We don't care if this fails */
 482                                 e_devname.elm_devnames[0] = '\0';
 483                         }
 484                         xo_open_instance("elements");
 485                         xo_emit("\tElement {:id/%u}, Type: {:type/%s}\n", e_ptr[j].elm_idx,
 486                             geteltnm(e_ptr[j].elm_type));
 487                         xo_emit("\t\tStatus: {:status/%s} ({q:status_code/0x%02x 0x%02x 0x%02x 0x%02x})\n",
 488                             scode2ascii(e_status.cstat[0]), e_status.cstat[0],
 489                             e_status.cstat[1], e_status.cstat[2],
 490                             e_status.cstat[3]);
 491                         if (e_desc.elm_desc_len > 0) {
 492                                 xo_emit("\t\tDescription: {:description/%s}\n",
 493                                     e_desc.elm_desc_str);
 494                         }
 495                         if (e_devname.elm_names_len > 0) {
 496                                 xo_emit("\t\tDevice Names: {:device_names/%s}\n",
 497                                     e_devname.elm_devnames);
 498                         }
 499                         print_extra_status(e_ptr[j].elm_type, e_status.cstat);
 500                         xo_close_instance("elements");
 501                         free(e_devname.elm_devnames);
 502                 }
 503                 xo_close_list("elements");
 504                 free(e_ptr);
 505                 close(fd);
 506         }
 507         globfree(&g);
 508         xo_close_list("enclosures");
 509         xo_close_container("sesutil");
 510         xo_finish();
 511
 512         return (EXIT_SUCCESS);
 513 }
 514
 515 static int
 516 encstatus(int argc, char **argv __unused)
 517 {
 518         glob_t g;
 519         int fd, status;
 520         size_t i, e;
 521         u_char estat;
 522
 523         status = 0;
 524         if (argc != 1) {
 525                 usage(stderr, "status");
 526         }
 527
 528         /* Get the list of ses devices */
 529         if (glob(uflag, 0, NULL, &g) == GLOB_NOMATCH) {
 530                 globfree(&g);
 531                 xo_errx(EXIT_FAILURE, "No SES devices found");
 532         }
 533
 534         xo_set_version(SESUTIL_XO_VERSION);
 535         xo_open_container("sesutil");
 536         xo_open_list("enclosures");
 537         for (i = 0; i < g.gl_pathc; i++) {
 538                 /* ensure we only got numbers after ses */
 539                 if (strspn(g.gl_pathv[i] + 8, "0123456789") !=
 540                     strlen(g.gl_pathv[i] + 8)) {
 541                         continue;
 542                 }
 543                 if ((fd = open(g.gl_pathv[i], O_RDWR)) < 0) {
 544                         /*
 545                          * Don't treat non-access errors as critical if we are
 546                          * accessing all devices
 547                          */
 548                         if (errno == EACCES && g.gl_pathc > 1) {
 549                                 xo_err(EXIT_FAILURE, "unable to access SES device");
 550                         }
 551                         xo_warn("unable to access SES device: %s", g.gl_pathv[i]);
 552                         continue;
 553                 }
 554
 555                 if (ioctl(fd, ENCIOC_GETENCSTAT, (caddr_t) &estat) < 0) {
 556                         xo_err(EXIT_FAILURE, "ENCIOC_GETENCSTAT");
 557                         close(fd);
 558                 }
 559
 560                 xo_open_instance("enclosures");
 561                 xo_emit("{:enc/%s}: ", g.gl_pathv[i] + 5);
 562                 e = 0;
 563                 if (estat == 0) {
 564                         if (status == 0) {
 565                                 status = 1;
 566                         }
 567                         xo_emit("{q:status/OK}");
 568                 } else {
 569                         if (estat & SES_ENCSTAT_INFO) {
 570                                 xo_emit("{lq:status/INFO}");
 571                                 e++;
 572                         }
 573                         if (estat & SES_ENCSTAT_NONCRITICAL) {
 574                                 if (e)
 575                                         xo_emit(",");
 576                                 xo_emit("{lq:status/NONCRITICAL}");
 577                                 e++;
 578                         }
 579                         if (estat & SES_ENCSTAT_CRITICAL) {
 580                                 if (e)
 581                                         xo_emit(",");
 582                                 xo_emit("{lq:status/CRITICAL}");
 583                                 e++;
 584                                 status = -1;
 585                         }
 586                         if (estat & SES_ENCSTAT_UNRECOV) {
 587                                 if (e)
 588                                         xo_emit(",");
 589                                 xo_emit("{lq:status/UNRECOV}");
 590                                 e++;
 591                                 status = -1;
 592                         }
 593                 }
 594                 xo_close_instance("enclosures");
 595                 xo_emit("\n");
 596                 close(fd);
 597         }
 598         globfree(&g);
 599
 600         xo_close_list("enclosures");
 601         xo_close_container("sesutil");
 602         xo_finish();
 603
 604         if (status == 1) {
 605                 return (EXIT_SUCCESS);
 606         } else {
 607                 return (EXIT_FAILURE);
 608         }
 609 }
 610
 611 int
 612 main(int argc, char **argv)
 613 {
 614         int i, ch;
 615         struct command *cmd = NULL;
 616
 617         argc = xo_parse_args(argc, argv);
 618         if (argc < 0)
 619                 exit(1);
 620
 621         uflag = "/dev/ses[0-9]*";
 622         while ((ch = getopt_long(argc, argv, "u:", NULL, NULL)) != -1) {
 623                 switch (ch) {
 624                 case 'u':
 625                         uflag = optarg;
 626                         break;
 627                 case '?':
 628                 default:
 629                         usage(stderr, NULL);
 630                 }
 631         }
 632         argc -= optind;
 633         argv += optind;
 634
 635         if (argc < 1) {
 636                 warnx("Missing command");
 637                 usage(stderr, NULL);
 638         }
 639
 640         for (i = 0; i < nbcmds; i++) {
 641                 if (strcmp(argv[0], cmds[i].name) == 0) {
 642                         cmd = &cmds[i];
 643                         break;
 644                 }
 645         }
 646
 647         if (cmd == NULL) {
 648                 warnx("unknown command %s", argv[0]);
 649                 usage(stderr, NULL);
 650         }
 651
 652         return (cmd->exec(argc, argv));
 653 }