sbin/hammer2/main.c

   1 /*
   2  * Copyright (c) 2011-2019 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@dragonflybsd.org>
   6  * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org>
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in
  16  *    the documentation and/or other materials provided with the
  17  *    distribution.
  18  * 3. Neither the name of The DragonFly Project nor the names of its
  19  *    contributors may be used to endorse or promote products derived
  20  *    from this software without specific, prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  25  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  26  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  28  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  29  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  30  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  31  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  32  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "hammer2.h"
  37
  38 int DebugOpt;
  39 int VerboseOpt;
  40 int QuietOpt;
  41 int NormalExit = 1;     /* if set to 0 main() has to pthread_exit() */
  42 int RecurseOpt;
  43 int ForceOpt;
  44 size_t MemOpt;
  45
  46 static void usage(int code);
  47
  48 int
  49 main(int ac, char **av)
  50 {
  51         char *sel_path = NULL;
  52         const char *uuid_str = NULL;
  53         const char *arg;
  54         char *opt;
  55         int pfs_type = HAMMER2_PFSTYPE_NONE;
  56         int all_opt = 0;
  57         int ecode = 0;
  58         int ch;
  59
  60         srandomdev();
  61         signal(SIGPIPE, SIG_IGN);
  62         dmsg_crypto_setup();
  63
  64         /*
  65          * Core options
  66          */
  67         while ((ch = getopt(ac, av, "adfm:rqs:t:u:v")) != -1) {
  68                 switch(ch) {
  69                 case 'a':
  70                         all_opt = 1;
  71                         break;
  72                 case 'd':
  73                         if (DebugOpt)
  74                                 ++DMsgDebugOpt;
  75                         DebugOpt = 1;
  76                         break;
  77                 case 'f':
  78                         ForceOpt = 1;
  79                         break;
  80                 case 'm':
  81                         MemOpt = strtoul(optarg, &opt, 0);
  82                         switch(*opt) {
  83                         case 'g':
  84                         case 'G':
  85                                 MemOpt *= 1024;
  86                                 /* FALLTHROUGH */
  87                         case 'm':
  88                         case 'M':
  89                                 MemOpt *= 1024;
  90                                 /* FALLTHROUGH */
  91                         case 'k':
  92                         case 'K':
  93                                 MemOpt *= 1024;
  94                                 break;
  95                         case 0:
  96                                 break;
  97                         default:
  98                                 fprintf(stderr, "-m: Unrecognized suffix\n");
  99                                 usage(1);
 100                                 break;
 101                         }
 102                         break;
 103                 case 'r':
 104                         RecurseOpt = 1;
 105                         break;
 106                 case 's':
 107                         sel_path = strdup(optarg);
 108                         break;
 109                 case 't':
 110                         /*
 111                          * set node type for mkpfs
 112                          */
 113                         if (strcasecmp(optarg, "CACHE") == 0) {
 114                                 pfs_type = HAMMER2_PFSTYPE_CACHE;
 115                         } else if (strcasecmp(optarg, "DUMMY") == 0) {
 116                                 pfs_type = HAMMER2_PFSTYPE_DUMMY;
 117                         } else if (strcasecmp(optarg, "SLAVE") == 0) {
 118                                 pfs_type = HAMMER2_PFSTYPE_SLAVE;
 119                         } else if (strcasecmp(optarg, "SOFT_SLAVE") == 0) {
 120                                 pfs_type = HAMMER2_PFSTYPE_SOFT_SLAVE;
 121                         } else if (strcasecmp(optarg, "SOFT_MASTER") == 0) {
 122                                 pfs_type = HAMMER2_PFSTYPE_SOFT_MASTER;
 123                         } else if (strcasecmp(optarg, "MASTER") == 0) {
 124                                 pfs_type = HAMMER2_PFSTYPE_MASTER;
 125                         } else {
 126                                 fprintf(stderr, "-t: Unrecognized node type\n");
 127                                 usage(1);
 128                         }
 129                         break;
 130                 case 'u':
 131                         /*
 132                          * set uuid for mkpfs, else one will be generated
 133                          * (required for all except the MASTER node_type)
 134                          */
 135                         uuid_str = optarg;
 136                         break;
 137                 case 'v':
 138                         if (QuietOpt)
 139                                 --QuietOpt;
 140                         else
 141                                 ++VerboseOpt;
 142                         break;
 143                 case 'q':
 144                         if (VerboseOpt)
 145                                 --VerboseOpt;
 146                         else
 147                                 ++QuietOpt;
 148                         break;
 149                 default:
 150                         fprintf(stderr, "Unknown option: %c\n", ch);
 151                         usage(1);
 152                         /* not reached */
 153                         break;
 154                 }
 155         }
 156
 157         /*
 158          * Adjust, then process the command
 159          */
 160         ac -= optind;
 161         av += optind;
 162         if (ac < 1) {
 163                 fprintf(stderr, "Missing command\n");
 164                 usage(1);
 165                 /* not reached */
 166         }
 167
 168         if (strcmp(av[0], "connect") == 0) {
 169                 /*
 170                  * Add cluster connection
 171                  */
 172                 if (ac < 2) {
 173                         fprintf(stderr, "connect: missing argument\n");
 174                         usage(1);
 175                 }
 176                 ecode = cmd_remote_connect(sel_path, av[1]);
 177         } else if (strcmp(av[0], "dumpchain") == 0) {
 178                 if (ac < 2)
 179                         ecode = cmd_dumpchain(".", (u_int)-1);
 180                 else if (ac < 3)
 181                         ecode = cmd_dumpchain(av[1], (u_int)-1);
 182                 else
 183                         ecode = cmd_dumpchain(av[1],
 184                                               (u_int)strtoul(av[2], NULL, 0));
 185         } else if (strcmp(av[0], "debugspan") == 0) {
 186                 /*
 187                  * Debug connection to the target hammer2 service and run
 188                  * the CONN/SPAN protocol.
 189                  */
 190                 if (ac < 2) {
 191                         fprintf(stderr, "debugspan: requires hostname\n");
 192                         usage(1);
 193                 }
 194                 ecode = cmd_debugspan(av[1]);
 195         } else if (strcmp(av[0], "disconnect") == 0) {
 196                 /*
 197                  * Remove cluster connection
 198                  */
 199                 if (ac < 2) {
 200                         fprintf(stderr, "disconnect: missing argument\n");
 201                         usage(1);
 202                 }
 203                 ecode = cmd_remote_disconnect(sel_path, av[1]);
 204         } else if (strcmp(av[0], "destroy") == 0) {
 205                 if (ac < 2) {
 206                         fprintf(stderr,
 207                                 "destroy: specify one or more paths to "
 208                                 "destroy\n");
 209                         usage(1);
 210                 }
 211                 ecode = cmd_destroy_path(ac - 1, (const char **)(void *)&av[1]);
 212         } else if (strcmp(av[0], "destroy-inum") == 0) {
 213                 if (ac < 2) {
 214                         fprintf(stderr,
 215                                 "destroy-inum: specify one or more inode "
 216                                 "numbers to destroy\n");
 217                         usage(1);
 218                 }
 219                 ecode = cmd_destroy_inum(sel_path, ac - 1,
 220                                          (const char **)(void *)&av[1]);
 221         } else if (strcmp(av[0], "emergency-mode-enable") == 0) {
 222                 ecode = cmd_emergency_mode(sel_path, 1, ac - 1,
 223                                          (const char **)(void *)&av[1]);
 224         } else if (strcmp(av[0], "emergency-mode-disable") == 0) {
 225                 ecode = cmd_emergency_mode(sel_path, 0, ac - 1,
 226                                          (const char **)(void *)&av[1]);
 227         } else if (strcmp(av[0], "hash") == 0) {
 228                 ecode = cmd_hash(ac - 1, (const char **)(void *)&av[1]);
 229         } else if (strcmp(av[0], "dhash") == 0) {
 230                 ecode = cmd_dhash(ac - 1, (const char **)(void *)&av[1]);
 231         } else if (strcmp(av[0], "info") == 0) {
 232                 ecode = cmd_info(ac - 1, (const char **)(void *)&av[1]);
 233         } else if (strcmp(av[0], "mountall") == 0) {
 234                 ecode = cmd_mountall(ac - 1, (const char **)(void *)&av[1]);
 235         } else if (strcmp(av[0], "status") == 0) {
 236                 /*
 237                  * Get status of PFS and its connections (-a for all PFSs)
 238                  */
 239                 if (ac < 2) {
 240                         ecode = cmd_remote_status(sel_path, all_opt);
 241                 } else {
 242                         int i;
 243                         for (i = 1; i < ac; ++i)
 244                                 ecode = cmd_remote_status(av[i], all_opt);
 245                 }
 246         } else if (strcmp(av[0], "pfs-clid") == 0) {
 247                 /*
 248                  * Print cluster id (uuid) for specific PFS
 249                  */
 250                 if (ac < 2) {
 251                         fprintf(stderr, "pfs-clid: requires name\n");
 252                         usage(1);
 253                 }
 254                 ecode = cmd_pfs_getid(sel_path, av[1], 0);
 255         } else if (strcmp(av[0], "pfs-fsid") == 0) {
 256                 /*
 257                  * Print private id (uuid) for specific PFS
 258                  */
 259                 if (ac < 2) {
 260                         fprintf(stderr, "pfs-fsid: requires name\n");
 261                         usage(1);
 262                 }
 263                 ecode = cmd_pfs_getid(sel_path, av[1], 1);
 264         } else if (strcmp(av[0], "pfs-list") == 0) {
 265                 /*
 266                  * List all PFSs
 267                  */
 268                 if (ac >= 2) {
 269                         ecode = cmd_pfs_list(ac - 1,
 270                                              (char **)(void *)&av[1]);
 271                 } else {
 272                         ecode = cmd_pfs_list(1, &sel_path);
 273                 }
 274         } else if (strcmp(av[0], "pfs-create") == 0) {
 275                 /*
 276                  * Create new PFS using pfs_type
 277                  */
 278                 if (ac < 2) {
 279                         fprintf(stderr, "pfs-create: requires name\n");
 280                         usage(1);
 281                 }
 282                 ecode = cmd_pfs_create(sel_path, av[1], pfs_type, uuid_str);
 283         } else if (strcmp(av[0], "pfs-delete") == 0) {
 284                 /*
 285                  * Delete a PFS by name
 286                  */
 287                 if (ac < 2) {
 288                         fprintf(stderr, "pfs-delete: requires name\n");
 289                         usage(1);
 290                 }
 291                 ecode = cmd_pfs_delete(sel_path, av, ac);
 292         } else if (strcmp(av[0], "snapshot") == 0 ||
 293                    strcmp(av[0], "snapshot-debug") == 0) {
 294                 /*
 295                  * Create snapshot with optional pfs-type and optional
 296                  * label override.
 297                  */
 298                 uint32_t flags = 0;
 299
 300                 if (strcmp(av[0], "snapshot-debug") == 0)
 301                         flags = HAMMER2_PFSFLAGS_NOSYNC;
 302
 303                 if (ac > 3) {
 304                         fprintf(stderr, "%s: too many arguments\n", av[0]);
 305                         usage(1);
 306                 }
 307                 switch(ac) {
 308                 case 1:
 309                         ecode = cmd_pfs_snapshot(sel_path, NULL, NULL, flags);
 310                         break;
 311                 case 2:
 312                         ecode = cmd_pfs_snapshot(sel_path, av[1], NULL, flags);
 313                         break;
 314                 case 3:
 315                         ecode = cmd_pfs_snapshot(sel_path, av[1], av[2], flags);
 316                         break;
 317                 }
 318         } else if (strcmp(av[0], "service") == 0) {
 319                 /*
 320                  * Start the service daemon.  This daemon accepts
 321                  * connections from local and remote clients, handles
 322                  * the security handshake, and manages the core messaging
 323                  * protocol.
 324                  */
 325                 ecode = cmd_service();
 326         } else if (strcmp(av[0], "stat") == 0) {
 327                 ecode = cmd_stat(ac - 1, (const char **)(void *)&av[1]);
 328         } else if (strcmp(av[0], "leaf") == 0) {
 329                 /*
 330                  * Start the management daemon for a specific PFS.
 331                  *
 332                  * This will typically connect to the local master node
 333                  * daemon, register the PFS, and then pass its side of
 334                  * the socket descriptor to the kernel HAMMER2 VFS via an
 335                  * ioctl().  The process and/or thread context remains in the
 336                  * kernel until the PFS is unmounted or the connection is
 337                  * lost, then returns from the ioctl.
 338                  *
 339                  * It is possible to connect directly to a remote master node
 340                  * instead of the local master node in situations where
 341                  * encryption is not desired or no local master node is
 342                  * desired.  This is not recommended because it represents
 343                  * a single point of failure for the PFS's communications.
 344                  *
 345                  * Direct kernel<->kernel communication between HAMMER2 VFSs
 346                  * is theoretically possible for directly-connected
 347                  * registrations (i.e. where the spanning tree is degenerate),
 348                  * but not recommended.  We specifically try to reduce the
 349                  * complexity of the HAMMER2 VFS kernel code.
 350                  */
 351                 ecode = cmd_leaf(sel_path);
 352         } else if (strcmp(av[0], "shell") == 0) {
 353                 /*
 354                  * Connect to the command line monitor in the hammer2 master
 355                  * node for the machine using HAMMER2_DBG_SHELL messages.
 356                  */
 357                 ecode = cmd_shell((ac < 2) ? NULL : av[1]);
 358         } else if (strcmp(av[0], "rsainit") == 0) {
 359                 /*
 360                  * Initialize a RSA keypair.  If no target directory is
 361                  * specified we default to "/etc/hammer2".
 362                  */
 363                 arg = (ac < 2) ? HAMMER2_DEFAULT_DIR : av[1];
 364                 ecode = cmd_rsainit(arg);
 365         } else if (strcmp(av[0], "rsaenc") == 0) {
 366                 /*
 367                  * Encrypt the input symmetrically by running it through
 368                  * the specified public and/or private key files.
 369                  *
 370                  * If no key files are specified data is encoded using
 371                  * "/etc/hammer2/rsa.pub".
 372                  *
 373                  * WARNING: no padding is added, data stream must contain
 374                  *          random padding for this to be secure.
 375                  *
 376                  * Used for debugging only
 377                  */
 378                 if (ac == 1) {
 379                         const char *rsapath = HAMMER2_DEFAULT_DIR "/rsa.pub";
 380                         ecode = cmd_rsaenc(&rsapath, 1);
 381                 } else {
 382                         ecode = cmd_rsaenc((const char **)(void *)&av[1],
 383                                            ac - 1);
 384                 }
 385         } else if (strcmp(av[0], "rsadec") == 0) {
 386                 /*
 387                  * Decrypt the input symmetrically by running it through
 388                  * the specified public and/or private key files.
 389                  *
 390                  * If no key files are specified data is decoded using
 391                  * "/etc/hammer2/rsa.prv".
 392                  *
 393                  * WARNING: no padding is added, data stream must contain
 394                  *          random padding for this to be secure.
 395                  *
 396                  * Used for debugging only
 397                  */
 398                 if (ac == 1) {
 399                         const char *rsapath = HAMMER2_DEFAULT_DIR "/rsa.prv";
 400                         ecode = cmd_rsadec(&rsapath, 1);
 401                 } else {
 402                         ecode = cmd_rsadec((const char **)(void *)&av[1],
 403                                            ac - 1);
 404                 }
 405         } else if (strcmp(av[0], "show") == 0) {
 406                 /*
 407                  * Raw dump of filesystem.  Use -v to check all crc's, and
 408                  * -vv to dump bulk file data.
 409                  */
 410                 if (ac != 2) {
 411                         fprintf(stderr, "show: requires device path\n");
 412                         usage(1);
 413                 } else {
 414                         cmd_show(av[1], 0);
 415                 }
 416         } else if (strcmp(av[0], "freemap") == 0) {
 417                 /*
 418                  * Raw dump of freemap.  Use -v to check all crc's, and
 419                  * -vv to dump bulk file data.
 420                  */
 421                 if (ac != 2) {
 422                         fprintf(stderr, "freemap: requires device path\n");
 423                         usage(1);
 424                 } else {
 425                         cmd_show(av[1], 1);
 426                 }
 427         } else if (strcmp(av[0], "volhdr") == 0) {
 428                 /*
 429                  * Dump the volume header.
 430                  */
 431                 if (ac != 2) {
 432                         fprintf(stderr, "volhdr: requires device path\n");
 433                         usage(1);
 434                 } else {
 435                         cmd_show(av[1], 2);
 436                 }
 437         } else if (strcmp(av[0], "setcomp") == 0) {
 438                 if (ac < 3) {
 439                         /*
 440                          * Missing compression method and at least one
 441                          * path.
 442                          */
 443                         fprintf(stderr,
 444                                 "setcomp: requires compression method and "
 445                                 "directory/file path\n");
 446                         usage(1);
 447                 } else {
 448                         /*
 449                          * Multiple paths may be specified
 450                          */
 451                         ecode = cmd_setcomp(av[1], &av[2]);
 452                 }
 453         } else if (strcmp(av[0], "setcheck") == 0) {
 454                 if (ac < 3) {
 455                         /*
 456                          * Missing compression method and at least one
 457                          * path.
 458                          */
 459                         fprintf(stderr,
 460                                 "setcheck: requires check code method and "
 461                                 "directory/file path\n");
 462                         usage(1);
 463                 } else {
 464                         /*
 465                          * Multiple paths may be specified
 466                          */
 467                         ecode = cmd_setcheck(av[1], &av[2]);
 468                 }
 469         } else if (strcmp(av[0], "clrcheck") == 0) {
 470                 ecode = cmd_setcheck("none", &av[1]);
 471         } else if (strcmp(av[0], "setcrc32") == 0) {
 472                 ecode = cmd_setcheck("crc32", &av[1]);
 473         } else if (strcmp(av[0], "setxxhash64") == 0) {
 474                 ecode = cmd_setcheck("xxhash64", &av[1]);
 475         } else if (strcmp(av[0], "setsha192") == 0) {
 476                 ecode = cmd_setcheck("sha192", &av[1]);
 477         } else if (strcmp(av[0], "printinode") == 0) {
 478                 if (ac != 2) {
 479                         fprintf(stderr,
 480                                 "printinode: requires directory/file path\n");
 481                         usage(1);
 482                 } else {
 483                         print_inode(av[1]);
 484                 }
 485         } else if (strcmp(av[0], "bulkfree") == 0) {
 486                 if (ac != 2) {
 487                         fprintf(stderr, "bulkfree: requires path to mount\n");
 488                         usage(1);
 489                 } else {
 490                         ecode = cmd_bulkfree(av[1]);
 491                 }
 492 #if 0
 493         } else if (strcmp(av[0], "bulkfree-async") == 0) {
 494                 if (ac != 2) {
 495                         fprintf(stderr,
 496                                 "bulkfree-async: requires path to mount\n");
 497                         usage(1);
 498                 } else {
 499                         ecode = cmd_bulkfree_async(av[1]);
 500                 }
 501 #endif
 502         } else if (strcmp(av[0], "cleanup") == 0) {
 503                 ecode = cmd_cleanup(av[1]);     /* can be NULL */
 504         } else {
 505                 fprintf(stderr, "Unrecognized command: %s\n", av[0]);
 506                 usage(1);
 507         }
 508
 509         /*
 510          * In DebugMode we may wind up starting several pthreads in the
 511          * original process, in which case we have to let them run and
 512          * not actually exit.
 513          */
 514         if (NormalExit) {
 515                 return (ecode);
 516         } else {
 517                 pthread_exit(NULL);
 518                 _exit(2);       /* NOT REACHED */
 519         }
 520 }
 521
 522 static
 523 void
 524 usage(int code)
 525 {
 526         fprintf(stderr,
 527                 "hammer2 [options] command [argument ...]\n"
 528                 "    -s path            Select filesystem\n"
 529                 "    -t type            PFS type for pfs-create\n"
 530                 "    -u uuid            uuid for pfs-create\n"
 531                 "    -m mem[k,m,g]      buffer memory (bulkfree)\n"
 532                 "\n"
 533                 "    cleanup [<path>]                  "
 534                         "Run cleanup passes\n"
 535                 "    connect <target>                  "
 536                         "Add cluster link\n"
 537                 "    destroy <path>...                 "
 538                         "Destroy directory entries (only use if inode bad)\n"
 539                 "    destroy-inum <inum>...            "
 540                         "Destroy inodes (only use if inode bad)\n"
 541                 "    disconnect <target>               "
 542                         "Del cluster link\n"
 543                 "    emergency-mode-enable <target>    "
 544                         "Enable emergency operations mode on filesystem\n"
 545                 "                                      "
 546                         "THIS IS A VERY DANGEROUS MODE\n"
 547                 "    emergency-mode-disable <target>   "
 548                         "Disable emergency operations mode on filesystem\n"
 549                 "    info [<devpath>...]               "
 550                         "Info on all offline or online H2 partitions\n"
 551                 "    mountall [<devpath>...]           "
 552                         "Mount @LOCAL for all H2 partitions\n"
 553                 "    status [<path>...]                "
 554                         "Report active cluster status\n"
 555                 "    hash [<filename>...]              "
 556                         "Print directory hash (key) for name\n"
 557                 "    dhash [<filename>...]             "
 558                         "Print data hash for long directory entry\n"
 559                 "    pfs-list [<path>...]              "
 560                         "List PFSs\n"
 561                 "    pfs-clid <label>                  "
 562                         "Print cluster id for specific PFS\n"
 563                 "    pfs-fsid <label>                  "
 564                         "Print private id for specific PFS\n"
 565                 "    pfs-create <label>                "
 566                         "Create a PFS\n"
 567                 "    pfs-delete <label>                "
 568                         "Destroy a PFS\n"
 569                 "    snapshot <path> [<label>]         "
 570                         "Snapshot a PFS or directory\n"
 571                 "    snapshot-debug <path> [<label>]   "
 572                         "Snapshot without filesystem sync\n"
 573                 "    service                           "
 574                         "Start service daemon\n"
 575                 "    stat [<path>...]                  "
 576                         "Return inode quota & config\n"
 577                 "    leaf                              "
 578                         "Start pfs leaf daemon\n"
 579                 "    shell [<host>]                    "
 580                         "Connect to debug shell\n"
 581                 "    debugspan <target>                "
 582                         "Connect to target, run CONN/SPAN\n"
 583                 "    rsainit [<path>]                  "
 584                         "Initialize rsa fields\n"
 585                 "    show <devpath>                    "
 586                         "Raw hammer2 media dump for topology\n"
 587                 "    freemap <devpath>                 "
 588                         "Raw hammer2 media dump for freemap\n"
 589                 "    volhdr <devpath>                  "
 590                         "Raw hammer2 media dump for the volume header(s)\n"
 591                 "    setcomp <comp[:level]> <path>...  "
 592                         "Set comp algo {none, autozero, lz4, zlib} & level\n"
 593                 "    setcheck <check> <path>...        "
 594                         "Set check algo {none, crc32, xxhash64, sha192}\n"
 595                 "    clrcheck [<path>...]              "
 596                         "Clear check code override\n"
 597                 "    setcrc32 [<path>...]              "
 598                         "Set check algo to crc32\n"
 599                 "    setxxhash64 [<path>...]           "
 600                         "Set check algo to xxhash64\n"
 601                 "    setsha192 [<path>...]             "
 602                         "Set check algo to sha192\n"
 603                 "    bulkfree <path>                   "
 604                         "Run bulkfree pass\n"
 605                 "    printinode <path>                 "
 606                         "Dump inode\n"
 607                 "    dumpchain [<path> [<chnflags>]]   "
 608                         "Dump in-memory chain topology (ONFLUSH flag is 0x200)\n"
 609 #if 0
 610                 "    bulkfree-async path               "
 611                         "Run bulkfree pass asynchronously\n"
 612 #endif
 613         );
 614         exit(code);
 615 }