sbin/hammer/hammer.c

   1 /*
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   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  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include "hammer.h"
  36
  37 #include <fstab.h>
  38
  39 static __inline void hammer_parse_blkdevs(const char *blkdevs, int oflags);
  40 static void __hammer_parse_blkdevs(const char *blkdevs, int oflags,
  41                 int verify_volume, int verify_count);
  42 static void sigalrm(int signo);
  43 static void sigintr(int signo);
  44 static void usage(int exit_code) __dead2;
  45
  46 int RecurseOpt;
  47 int VerboseOpt;
  48 int QuietOpt;
  49 int NoSyncOpt;
  50 int TwoWayPipeOpt;
  51 int TimeoutOpt;
  52 int DelayOpt = 5;
  53 char *SshPort;
  54 int ForceYesOpt;
  55 int CompressOpt;
  56 int ForceOpt;
  57 int RunningIoctl;
  58 int DidInterrupt;
  59 int BulkOpt;
  60 int AllPFS;
  61 uint64_t BandwidthOpt;
  62 uint64_t SplitupOpt = 4ULL * 1024ULL * 1024ULL * 1024ULL;
  63 uint64_t MemoryLimit = 1024LLU * 1024 * 1024;
  64 const char *SplitupOptStr;
  65 const char *CyclePath;
  66
  67 int
  68 main(int ac, char **av)
  69 {
  70         char *blkdevs = NULL;
  71         char *ptr;
  72         char *restrictcmd = NULL;
  73         int ch;
  74
  75         while ((ch = getopt(ac, av,
  76                             "b:c:de:hf:i:m:p:qrt:v2yABC:FR:S:T:X")) != -1) {
  77                 switch(ch) {
  78                 case '2':
  79                         TwoWayPipeOpt = 1;
  80                         break;
  81                 case 'y':
  82                         ForceYesOpt = 1;
  83                         break;
  84                 case 'b':
  85                         BandwidthOpt = strtoull(optarg, &ptr, 0);
  86                         switch(*ptr) {
  87                         case 'g':
  88                         case 'G':
  89                                 BandwidthOpt *= 1024;
  90                                 /* fall through */
  91                         case 'm':
  92                         case 'M':
  93                                 BandwidthOpt *= 1024;
  94                                 /* fall through */
  95                         case 'k':
  96                         case 'K':
  97                                 BandwidthOpt *= 1024;
  98                                 break;
  99                         case '\0':
 100                                 /* bytes per second if no suffix */
 101                                 break;
 102                         default:
 103                                 usage(1);
 104                                 /* not reached */
 105                         }
 106                         break;
 107                 case 'S':
 108                         SplitupOptStr = strdup(optarg);
 109                         SplitupOpt = strtoull(optarg, &ptr, 0);
 110                         switch(*ptr) {
 111                         case 'g':
 112                         case 'G':
 113                                 SplitupOpt *= 1024;
 114                                 /* fall through */
 115                         case 'm':
 116                         case 'M':
 117                                 SplitupOpt *= 1024;
 118                                 /* fall through */
 119                         case 'k':
 120                         case 'K':
 121                                 SplitupOpt *= 1024;
 122                                 break;
 123                         case '\0':
 124                                 /* bytes per second if no suffix */
 125                                 break;
 126                         default:
 127                                 usage(1);
 128                                 /* not reached */
 129                         }
 130                         break;
 131                 case 'c':
 132                         CyclePath = optarg;
 133                         break;
 134                 case 'd':
 135                         ++DebugOpt;
 136                         break;
 137                 case 'e':
 138                         ScoreBoardFile = optarg;
 139                         break;
 140                 case 'h':
 141                         usage(0);
 142                         /* not reached */
 143                 case 'i':
 144                         DelayOpt = strtol(optarg, NULL, 0);
 145                         break;
 146                 case 'm':
 147                         MemoryLimit = strtouq(optarg, &ptr, 0);
 148                         switch(*ptr) {
 149                         case 't':
 150                         case 'T':
 151                                 MemoryLimit *= 1024;
 152                                 /* fall through */
 153                         case 'g':
 154                         case 'G':
 155                                 MemoryLimit *= 1024;
 156                                 /* fall through */
 157                         case 'm':
 158                         case 'M':
 159                                 MemoryLimit *= 1024;
 160                                 /* fall through */
 161                         case 'k':
 162                         case 'K':
 163                                 MemoryLimit *= 1024;
 164                                 /* fall through */
 165                         default:
 166                                 break;
 167                         }
 168
 169                         /* minimum limit */
 170                         if (MemoryLimit < 1024 * 1024)
 171                                 MemoryLimit = 1024 * 1024;
 172                         break;
 173                 case 'p':
 174                         SshPort = optarg;
 175                         break;
 176                 case 'r':
 177                         RecurseOpt = 1;
 178                         break;
 179                 case 'f':
 180                         blkdevs = optarg;
 181                         break;
 182                 case 't':
 183                         TimeoutOpt = strtol(optarg, NULL, 0);
 184                         break;
 185                 case 'v':
 186                         if (QuietOpt > 0)
 187                                 --QuietOpt;
 188                         else
 189                                 ++VerboseOpt;
 190                         break;
 191                 case 'q':
 192                         if (VerboseOpt > 0)
 193                                 --VerboseOpt;
 194                         else
 195                                 ++QuietOpt;
 196                         break;
 197                 case 'A':
 198                         AllPFS = 1;
 199                         break;
 200                 case 'B':
 201                         BulkOpt = 1;
 202                         break;
 203                 case 'C':
 204                         if (hammer_parse_cache_size(optarg) == -1) {
 205                                 usage(1);
 206                                 /* not reached */
 207                         }
 208                         break;
 209                 case 'F':
 210                         ForceOpt = 1;
 211                         break;
 212                 case 'R':
 213                         if (restrictcmd == NULL)
 214                                 restrictcmd = optarg;
 215                         break;
 216                 case 'T':
 217                         if (RestrictTarget == NULL)
 218                                 RestrictTarget = optarg;
 219                         break;
 220                 case 'X':
 221                         CompressOpt = 1;
 222                         break;
 223                 default:
 224                         usage(1);
 225                         /* not reached */
 226                 }
 227         }
 228         ac -= optind;
 229         av += optind;
 230         if (ac < 1) {
 231                 usage(1);
 232                 /* not reached */
 233         }
 234
 235         signal(SIGALRM, sigalrm);
 236         signal(SIGINT, sigintr);
 237
 238         /*
 239          * Check command restriction (used by hammer ssh-remote).  Several
 240          * commands may be iterated with a comma.
 241          */
 242         if (restrictcmd) {
 243                 char *elm, *dup;
 244
 245                 dup = ptr = strdup(restrictcmd);
 246                 while ((elm = strsep(&ptr, ",")) != NULL) {
 247                         if (strcmp(av[0], elm) == 0)
 248                                 break;
 249                 }
 250                 if (elm == NULL) {
 251                         errx(1, "hammer-remote: request does not match "
 252                                 "restricted command");
 253                         /* not reached */
 254                 }
 255                 free(dup);
 256         }
 257
 258         /*
 259          * Lookup the filesystem type
 260          */
 261         if (hammer_uuid_name_lookup(&Hammer_FSType, HAMMER_FSTYPE_STRING)) {
 262                 errx(1, "uuids file does not have the DragonFly "
 263                         "HAMMER filesystem type");
 264                 /* not reached */
 265         }
 266
 267         /*
 268          * Parse commands
 269          */
 270         if (strcmp(av[0], "synctid") == 0) {
 271                 hammer_cmd_synctid(av + 1, ac - 1);
 272                 exit(0);
 273         }
 274         if (strcmp(av[0], "namekey2") == 0) {
 275                 int64_t key;
 276                 int32_t crcx;
 277                 int len;
 278                 const char *aname = av[1];
 279
 280                 if (aname == NULL) {
 281                         usage(1);
 282                         /* not reached */
 283                 }
 284                 len = strlen(aname);
 285                 key = (uint32_t)crc32(aname, len) & 0xFFFFFFFEU;
 286
 287                 switch(len) {
 288                 default:
 289                         crcx = crc32(aname + 3, len - 5);
 290                         crcx = crcx ^ (crcx >> 6) ^ (crcx >> 12);
 291                         key |= (int64_t)(crcx & 0x3F) << 42;
 292                         /* fall through */
 293                 case 5:
 294                 case 4:
 295                         /* fall through */
 296                 case 3:
 297                         key |= ((int64_t)(aname[2] & 0x1F) << 48);
 298                         /* fall through */
 299                 case 2:
 300                         key |= ((int64_t)(aname[1] & 0x1F) << 53) |
 301                                ((int64_t)(aname[len-2] & 0x1F) << 37);
 302                         /* fall through */
 303                 case 1:
 304                         key |= ((int64_t)(aname[0] & 0x1F) << 58) |
 305                                ((int64_t)(aname[len-1] & 0x1F) << 32);
 306                         /* fall through */
 307                 case 0:
 308                         break;
 309                 }
 310                 if (key == 0)
 311                         key |= 0x100000000LL;
 312                 printf("0x%016jx\n", (uintmax_t)key);
 313                 exit(0);
 314         }
 315         if (strcmp(av[0], "namekey1") == 0) {
 316                 int64_t key;
 317
 318                 if (av[1] == NULL) {
 319                         usage(1);
 320                         /* not reached */
 321                 }
 322                 key = (int64_t)(crc32(av[1], strlen(av[1])) & 0x7FFFFFFF) << 32;
 323                 if (key == 0)
 324                         key |= 0x100000000LL;
 325                 printf("0x%016jx\n", (uintmax_t)key);
 326                 exit(0);
 327         }
 328         if (strcmp(av[0], "namekey32") == 0) {
 329                 int32_t key;
 330
 331                 if (av[1] == NULL) {
 332                         usage(1);
 333                         /* not reached */
 334                 }
 335                 key = crc32(av[1], strlen(av[1])) & 0x7FFFFFFF;
 336                 if (key == 0)
 337                         ++key;
 338                 printf("0x%08x\n", key);
 339                 exit(0);
 340         }
 341         if (strcmp(av[0], "pfs-status") == 0) {
 342                 hammer_cmd_pseudofs_status(av + 1, ac - 1);
 343                 exit(0);
 344         }
 345         if (strcmp(av[0], "pfs-master") == 0) {
 346                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 0);
 347                 exit(0);
 348         }
 349         if (strcmp(av[0], "pfs-slave") == 0) {
 350                 hammer_cmd_pseudofs_create(av + 1, ac - 1, 1);
 351                 exit(0);
 352         }
 353         if (strcmp(av[0], "pfs-update") == 0) {
 354                 hammer_cmd_pseudofs_update(av + 1, ac - 1);
 355                 exit(0);
 356         }
 357         if (strcmp(av[0], "pfs-upgrade") == 0) {
 358                 hammer_cmd_pseudofs_upgrade(av + 1, ac - 1);
 359                 exit(0);
 360         }
 361         if (strcmp(av[0], "pfs-downgrade") == 0) {
 362                 hammer_cmd_pseudofs_downgrade(av + 1, ac - 1);
 363                 exit(0);
 364         }
 365         if (strcmp(av[0], "pfs-destroy") == 0) {
 366                 hammer_cmd_pseudofs_destroy(av + 1, ac - 1);
 367                 exit(0);
 368         }
 369         if (strcmp(av[0], "prune") == 0) {
 370                 hammer_cmd_softprune(av + 1, ac - 1, 0);
 371                 exit(0);
 372         }
 373         if (strcmp(av[0], "prune-everything") == 0) {
 374                 hammer_cmd_softprune(av + 1, ac - 1, 1);
 375                 exit(0);
 376         }
 377         if (strcmp(av[0], "config") == 0) {
 378                 hammer_cmd_config(av + 1, ac - 1);
 379                 exit(0);
 380         }
 381         if (strcmp(av[0], "viconfig") == 0) {
 382                 hammer_cmd_viconfig(av + 1, ac - 1);
 383                 exit(0);
 384         }
 385         if (strcmp(av[0], "cleanup") == 0) {
 386                 hammer_cmd_cleanup(av + 1, ac - 1);
 387                 exit(0);
 388         }
 389         if (strcmp(av[0], "abort-cleanup") == 0) {
 390                 hammer_cmd_abort_cleanup(av + 1, ac - 1);
 391                 exit(0);
 392         }
 393         if (strcmp(av[0], "info") == 0) {
 394                 hammer_cmd_info(av + 1, ac - 1);
 395                 exit(0);
 396         }
 397         if (strcmp(av[0], "ssh-remote") == 0) {
 398                 if (ac != 3) {
 399                         usage(1);
 400                         /* not reached */
 401                 }
 402                 hammer_cmd_sshremote(av[1], av[2]);
 403                 exit(0);
 404         }
 405         if (strcmp(av[0], "snap") == 0) {
 406                 hammer_cmd_snap(av + 1, ac - 1, 0, 1);
 407                 exit(0);
 408         }
 409         if (strcmp(av[0], "snaplo") == 0) {
 410                 hammer_cmd_snap(av + 1, ac - 1, 0, 0);
 411                 exit(0);
 412         }
 413         if (strcmp(av[0], "snapq") == 0) {
 414                 hammer_cmd_snap(av + 1, ac - 1, 1, 0);
 415                 exit(0);
 416         }
 417         if (strcmp(av[0], "snapls") == 0) {
 418                 hammer_cmd_snapls(av + 1, ac - 1);
 419                 exit(0);
 420         }
 421         if (strcmp(av[0], "snaprm") == 0) {
 422                 hammer_cmd_snaprm(av + 1, ac - 1);
 423                 exit(0);
 424         }
 425         if (strcmp(av[0], "snapshot") == 0) {
 426                 hammer_cmd_snapshot(av + 1, ac - 1);
 427                 exit(0);
 428         }
 429         if (strcmp(av[0], "bstats") == 0) {
 430                 hammer_cmd_bstats(av + 1, ac - 1);
 431                 exit(0);
 432         }
 433         if (strcmp(av[0], "iostats") == 0) {
 434                 hammer_cmd_iostats(av + 1, ac - 1);
 435                 exit(0);
 436         }
 437         if (strcmp(av[0], "stats") == 0) {
 438                 hammer_cmd_stats(av + 1, ac - 1);
 439                 exit(0);
 440         }
 441
 442         if (strncmp(av[0], "history", 7) == 0) {
 443                 hammer_cmd_history(av[0] + 7, av + 1, ac - 1);
 444                 exit(0);
 445         }
 446         if (strcmp(av[0], "rebalance") == 0) {
 447                 signal(SIGINT, sigalrm);
 448                 hammer_cmd_rebalance(av + 1, ac - 1);
 449                 exit(0);
 450         }
 451         if (strncmp(av[0], "reblock", 7) == 0) {
 452                 signal(SIGINT, sigalrm);
 453                 if (strcmp(av[0], "reblock") == 0)
 454                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_FLAGS);
 455                 else if (strcmp(av[0], "reblock-btree") == 0)
 456                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_BTREE);
 457                 else if (strcmp(av[0], "reblock-inodes") == 0)
 458                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_INODES);
 459                 else if (strcmp(av[0], "reblock-dirs") == 0)
 460                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DIRS);
 461                 else if (strcmp(av[0], "reblock-data") == 0)
 462                         hammer_cmd_reblock(av + 1, ac - 1, HAMMER_IOC_DO_DATA);
 463                 else {
 464                         usage(1);
 465                         /* not reached */
 466                 }
 467                 exit(0);
 468         }
 469         if (strncmp(av[0], "mirror", 6) == 0) {
 470                 if (strcmp(av[0], "mirror-read") == 0)
 471                         hammer_cmd_mirror_read(av + 1, ac - 1, 0);
 472                 else if (strcmp(av[0], "mirror-read-stream") == 0)
 473                         hammer_cmd_mirror_read(av + 1, ac - 1, 1);
 474                 else if (strcmp(av[0], "mirror-write") == 0)
 475                         hammer_cmd_mirror_write(av + 1, ac - 1);
 476                 else if (strcmp(av[0], "mirror-copy") == 0)
 477                         hammer_cmd_mirror_copy(av + 1, ac - 1, 0);
 478                 else if (strcmp(av[0], "mirror-stream") == 0)
 479                         hammer_cmd_mirror_copy(av + 1, ac - 1, 1);
 480                 else if (strcmp(av[0], "mirror-dump") == 0)
 481                         hammer_cmd_mirror_dump(av + 1, ac - 1);
 482                 else {
 483                         usage(1);
 484                         /* not reached */
 485                 }
 486                 exit(0);
 487         }
 488         if (strcmp(av[0], "dedup-simulate") == 0) {
 489                 hammer_cmd_dedup_simulate(av + 1, ac - 1);
 490                 exit(0);
 491         }
 492         if (strcmp(av[0], "dedup") == 0) {
 493                 hammer_cmd_dedup(av + 1, ac - 1);
 494                 exit(0);
 495         }
 496         if (strcmp(av[0], "version") == 0) {
 497                 hammer_cmd_get_version(av + 1, ac - 1);
 498                 exit(0);
 499         }
 500         if (strcmp(av[0], "version-upgrade") == 0) {
 501                 hammer_cmd_set_version(av + 1, ac - 1);
 502                 exit(0);
 503         }
 504         if (strcmp(av[0], "volume-add") == 0) {
 505                 hammer_cmd_volume_add(av + 1, ac - 1);
 506                 exit(0);
 507         }
 508         if (strcmp(av[0], "volume-del") == 0) {
 509                 hammer_cmd_volume_del(av + 1, ac - 1);
 510                 exit(0);
 511         }
 512         if (strcmp(av[0], "volume-list") == 0) {
 513                 hammer_cmd_volume_list(av + 1, ac - 1);
 514                 exit(0);
 515         }
 516         if (strcmp(av[0], "volume-blkdevs") == 0) {
 517                 hammer_cmd_volume_blkdevs(av + 1, ac - 1);
 518                 exit(0);
 519         }
 520
 521         if (strcmp(av[0], "show") == 0) {
 522                 const char *arg = NULL;
 523                 char *p, *dup;
 524                 int filter = -1;
 525                 int obfuscate = 0;
 526                 int indent = 0;
 527
 528                 hammer_parse_blkdevs(blkdevs, O_RDONLY);
 529                 if (ac > 3) {
 530                         errx(1, "Too many options specified");
 531                         /* not reached */
 532                 }
 533                 if (ac > 1)
 534                         arg = av[1];
 535                 if (ac > 2) {
 536                         dup = ptr = strdup(av[2]);
 537                         while ((p = strsep(&ptr, ",")) != NULL) {
 538                                 if (strcmp(p, "filter") == 0)
 539                                         filter = 1;
 540                                 else if (strcmp(p, "nofilter") == 0)
 541                                         filter = 0;
 542                                 else if (strcmp(p, "obfuscate") == 0)
 543                                         obfuscate = 1;
 544                                 else if (strcmp(p, "indent") == 0)
 545                                         indent = 1;
 546                         }
 547                         free(dup);
 548                 }
 549                 hammer_cmd_show(arg, filter, obfuscate, indent);
 550                 exit(0);
 551         }
 552         if (strcmp(av[0], "show-undo") == 0) {
 553                 hammer_parse_blkdevs(blkdevs, O_RDONLY);
 554                 hammer_cmd_show_undo();
 555                 exit(0);
 556         }
 557         if (strcmp(av[0], "recover") == 0) {
 558                 __hammer_parse_blkdevs(blkdevs, O_RDONLY, 0, 1);
 559                 hammer_cmd_recover(av + 1, ac - 1);
 560                 exit(0);
 561         }
 562         if (strcmp(av[0], "blockmap") == 0) {
 563                 hammer_parse_blkdevs(blkdevs, O_RDONLY);
 564                 hammer_cmd_blockmap();
 565                 exit(0);
 566         }
 567         if (strcmp(av[0], "checkmap") == 0) {
 568                 hammer_parse_blkdevs(blkdevs, O_RDONLY);
 569                 hammer_cmd_checkmap();
 570                 exit(0);
 571         }
 572         if (strcmp(av[0], "strip") == 0) {
 573                 __hammer_parse_blkdevs(blkdevs, O_RDWR, 0, 0);
 574                 hammer_cmd_strip();
 575                 exit(0);
 576         }
 577
 578         usage(1);
 579         /* not reached */
 580         return(0);
 581 }
 582
 583 /*
 584  * Parse the device specification.
 585  *
 586  * Multi-volume hammer devices are colon-separated.  Each element
 587  * may be further expanded via /etc/devtab.  One may also specify
 588  * a single element which is expanded into multiple elements via
 589  * /etc/devtab.
 590  */
 591 static
 592 void
 593 __hammer_parse_blkdevs(const char *blkdevs, int oflags, int verify_volume,
 594         int verify_count)
 595 {
 596         volume_info_t volume = NULL;
 597         char *copy;
 598         char *volname;
 599         int vol_count = 0;
 600
 601         if (blkdevs == NULL) {
 602                 errx(1, "A -f blkdevs specification is required "
 603                         "for this command");
 604                 /* not reached */
 605         }
 606
 607         copy = strdup(blkdevs);
 608         while ((volname = copy) != NULL) {
 609                 if ((copy = strchr(copy, ':')) != NULL)
 610                         *copy++ = 0;
 611                 volname = getdevpath(volname, 0);
 612                 if (strchr(volname, ':')) {
 613                         __hammer_parse_blkdevs(volname, oflags, verify_volume,
 614                                 verify_count);
 615                 } else {
 616                         volume = load_volume(volname, oflags, verify_volume);
 617                         assert(volume);
 618                         ++vol_count;
 619                 }
 620                 free(volname);
 621         }
 622         free(copy);
 623
 624         assert(volume);
 625         if (verify_count) {
 626                 if (vol_count != volume->ondisk->vol_count) {
 627                         errx(1, "Volume header says %d volumes, but %d specified.",
 628                                 volume->ondisk->vol_count, vol_count);
 629                         /* not reached */
 630                 }
 631                 if (get_root_volume() == NULL) {
 632                         errx(1, "No root volume found");
 633                         /* not reached */
 634                 }
 635         }
 636 }
 637
 638 static __inline
 639 void
 640 hammer_parse_blkdevs(const char *blkdevs, int oflags)
 641 {
 642         __hammer_parse_blkdevs(blkdevs, oflags, 1, 1);
 643 }
 644
 645 static
 646 void
 647 sigalrm(int signo __unused)
 648 {
 649         /* do nothing (interrupts HAMMER ioctl) */
 650 }
 651
 652 static
 653 void
 654 sigintr(int signo __unused)
 655 {
 656         if (RunningIoctl == 0)
 657                 _exit(1);
 658         DidInterrupt = 1;
 659         /* do nothing (interrupts HAMMER ioctl) */
 660 }
 661
 662 static
 663 void
 664 usage(int exit_code)
 665 {
 666         fprintf(stderr,
 667                 "hammer -h\n"
 668                 "hammer [-2ABFqrvXy] [-b bandwidth] [-C cachesize[:readahead]] \n"
 669                 "       [-R restrictcmd] [-T restrictpath] [-c cyclefile]\n"
 670                 "       [-e scoreboardfile] [-f blkdevs] [-i delay] [-p ssh-port]\n"
 671                 "       [-S splitsize] [-t seconds] [-m memlimit] command [argument ...]\n"
 672                 "hammer synctid <filesystem> [quick]\n"
 673                 "hammer bstats [interval]\n"
 674                 "hammer iostats [interval]\n"
 675                 "hammer stats [interval]\n"
 676                 "hammer history[@offset[,len]] <file> ...\n"
 677                 "hammer namekey1 <path>\n"
 678                 "hammer namekey2 <path>\n"
 679                 "hammer namekey32 <path>\n"
 680                 "hammer cleanup [<filesystem> ...]\n"
 681                 "hammer abort-cleanup\n"
 682                 "hammer info [<dirpath> ...]\n"
 683                 "hammer snapshot [<filesystem>] <snapshot-dir>\n"
 684                 "hammer snapshot <filesystem> <snapshot-dir> [<note>]\n"
 685                 "hammer prune <softlink-dir>\n"
 686                 "hammer prune-everything <filesystem>\n"
 687                 "hammer rebalance <filesystem> [saturation_percentage]\n"
 688                 "hammer reblock[-btree|-inodes|-dirs|-data] "
 689                         "<filesystem> [fill_percentage]\n"
 690                 "hammer pfs-status <dirpath> ...\n"
 691                 "hammer pfs-master <dirpath> [options]\n"
 692                 "hammer pfs-slave <dirpath> [options]\n"
 693                 "hammer pfs-update <dirpath> [options]\n"
 694                 "hammer pfs-upgrade <dirpath>\n"
 695                 "hammer pfs-downgrade <dirpath>\n"
 696                 "hammer pfs-destroy <dirpath>\n"
 697                 "hammer mirror-read <filesystem> [begin-tid]\n"
 698                 "hammer mirror-read-stream <filesystem> [begin-tid]\n"
 699                 "hammer mirror-write <filesystem>\n"
 700                 "hammer mirror-dump [header]\n"
 701                 "hammer mirror-copy [[user@]host:]<filesystem>"
 702                                   " [[user@]host:]<filesystem>\n"
 703                 "hammer mirror-stream [[user@]host:]<filesystem>"
 704                                     " [[user@]host:]<filesystem>\n"
 705                 "hammer ssh-remote command filesystem\n"
 706                 "hammer version <filesystem>\n"
 707                 "hammer version-upgrade <filesystem> <version> [force]\n"
 708                 "hammer volume-add <device> <filesystem>\n"
 709                 "hammer volume-del <device> <filesystem>\n"
 710                 "hammer volume-list <filesystem>\n"
 711                 "hammer volume-blkdevs <filesystem>\n"
 712         );
 713
 714         fprintf(stderr, "\nHAMMER utility version 3+ commands:\n");
 715
 716         fprintf(stderr,
 717                 "hammer config [<filesystem> [<configfile>]]\n"
 718                 "hammer viconfig [<filesystem>]\n"
 719                 "hammer snap <path> [<note>]\n"
 720                 "hammer snaplo <path> [<note>]\n"
 721                 "hammer snapq <dir> [<note>]\n"
 722                 "hammer snaprm <path> ...\n"
 723                 "hammer snaprm <transid> ...\n"
 724                 "hammer snaprm <filesystem> <transid> ...\n"
 725                 "hammer snapls [<path> ...]\n"
 726         );
 727
 728         fprintf(stderr, "\nHAMMER utility version 4+ commands:\n");
 729
 730         fprintf(stderr,
 731                 "hammer -f blkdevs blockmap\n"
 732                 "hammer -f blkdevs checkmap\n"
 733                 "hammer -f blkdevs [-qqq] show [lo:objid]\n"
 734                 "hammer -f blkdevs show-undo\n"
 735                 "hammer -f blkdevs recover <target_dir> [full|quick]\n"
 736                 "hammer -f blkdevs strip\n"
 737         );
 738
 739         fprintf(stderr, "\nHAMMER utility version 5+ commands:\n");
 740
 741         fprintf(stderr,
 742                 "hammer dedup-simulate <filesystem>\n"
 743                 "hammer dedup <filesystem>\n"
 744         );
 745
 746         exit(exit_code);
 747 }
 748