cmd/zdb/zdb.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdio_ext.h>
  28 #include <stdlib.h>
  29 #include <ctype.h>
  30 #include <sys/zfs_context.h>
  31 #include <sys/spa.h>
  32 #include <sys/spa_impl.h>
  33 #include <sys/dmu.h>
  34 #include <sys/zap.h>
  35 #include <sys/fs/zfs.h>
  36 #include <sys/zfs_znode.h>
  37 #include <sys/vdev.h>
  38 #include <sys/vdev_impl.h>
  39 #include <sys/metaslab_impl.h>
  40 #include <sys/dmu_objset.h>
  41 #include <sys/dsl_dir.h>
  42 #include <sys/dsl_dataset.h>
  43 #include <sys/dsl_pool.h>
  44 #include <sys/dbuf.h>
  45 #include <sys/zil.h>
  46 #include <sys/zil_impl.h>
  47 #include <sys/stat.h>
  48 #include <sys/resource.h>
  49 #include <sys/dmu_traverse.h>
  50 #include <sys/zio_checksum.h>
  51 #include <sys/zio_compress.h>
  52 #include <sys/zfs_fuid.h>
  53 #include <sys/arc.h>
  54 #undef ZFS_MAXNAMELEN
  55 #undef verify
  56 #include <libzfs.h>
  57
  58 const char cmdname[] = "zdb";
  59 uint8_t dump_opt[256];
  60
  61 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  62
  63 extern void dump_intent_log(zilog_t *);
  64 uint64_t *zopt_object = NULL;
  65 int zopt_objects = 0;
  66 libzfs_handle_t *g_zfs;
  67 boolean_t zdb_sig_user_data = B_TRUE;
  68 int zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
  69
  70 /*
  71  * These libumem hooks provide a reasonable set of defaults for the allocator's
  72  * debugging facilities.
  73  */
  74 const char *
  75 _umem_debug_init()
  76 {
  77         return ("default,verbose"); /* $UMEM_DEBUG setting */
  78 }
  79
  80 const char *
  81 _umem_logging_init(void)
  82 {
  83         return ("fail,contents"); /* $UMEM_LOGGING setting */
  84 }
  85
  86 static void
  87 usage(void)
  88 {
  89         (void) fprintf(stderr,
  90             "Usage: %s [-udibcsvL] [-U cachefile_path] [-t txg]\n"
  91             "\t   [-S user:cksumalg] "
  92             "dataset [object...]\n"
  93             "       %s -C [pool]\n"
  94             "       %s -l dev\n"
  95             "       %s -R pool:vdev:offset:size:flags\n"
  96             "       %s [-p path_to_vdev_dir]\n"
  97             "       %s -e pool | GUID | devid ...\n",
  98             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
  99
 100         (void) fprintf(stderr, "        -u uberblock\n");
 101         (void) fprintf(stderr, "        -d datasets\n");
 102         (void) fprintf(stderr, "        -C cached pool configuration\n");
 103         (void) fprintf(stderr, "        -i intent logs\n");
 104         (void) fprintf(stderr, "        -b block statistics\n");
 105         (void) fprintf(stderr, "        -m metaslabs\n");
 106         (void) fprintf(stderr, "        -c checksum all metadata (twice for "
 107             "all data) blocks\n");
 108         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 109         (void) fprintf(stderr, "        -S <user|all>:<cksum_alg|all> -- "
 110             "dump blkptr signatures\n");
 111         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 112         (void) fprintf(stderr, "        -l dump label contents\n");
 113         (void) fprintf(stderr, "        -L disable leak tracking (do not "
 114             "load spacemaps)\n");
 115         (void) fprintf(stderr, "        -U cachefile_path -- use alternate "
 116             "cachefile\n");
 117         (void) fprintf(stderr, "        -R read and display block from a "
 118             "device\n");
 119         (void) fprintf(stderr, "        -e Pool is exported/destroyed/"
 120             "has altroot\n");
 121         (void) fprintf(stderr, "        -p <Path to vdev dir> (use with -e)\n");
 122         (void) fprintf(stderr, "        -t <txg> highest txg to use when "
 123             "searching for uberblocks\n");
 124         (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
 125             "to make only that option verbose\n");
 126         (void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
 127         exit(1);
 128 }
 129
 130 /*
 131  * Called for usage errors that are discovered after a call to spa_open(),
 132  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
 133  */
 134
 135 static void
 136 fatal(const char *fmt, ...)
 137 {
 138         va_list ap;
 139
 140         va_start(ap, fmt);
 141         (void) fprintf(stderr, "%s: ", cmdname);
 142         (void) vfprintf(stderr, fmt, ap);
 143         va_end(ap);
 144         (void) fprintf(stderr, "\n");
 145
 146         exit(1);
 147 }
 148
 149 static void
 150 dump_nvlist(nvlist_t *list, int indent)
 151 {
 152         nvpair_t *elem = NULL;
 153
 154         while ((elem = nvlist_next_nvpair(list, elem)) != NULL) {
 155                 switch (nvpair_type(elem)) {
 156                 case DATA_TYPE_STRING:
 157                         {
 158                                 char *value;
 159
 160                                 VERIFY(nvpair_value_string(elem, &value) == 0);
 161                                 (void) printf("%*s%s='%s'\n", indent, "",
 162                                     nvpair_name(elem), value);
 163                         }
 164                         break;
 165
 166                 case DATA_TYPE_UINT64:
 167                         {
 168                                 uint64_t value;
 169
 170                                 VERIFY(nvpair_value_uint64(elem, &value) == 0);
 171                                 (void) printf("%*s%s=%llu\n", indent, "",
 172                                     nvpair_name(elem), (u_longlong_t)value);
 173                         }
 174                         break;
 175
 176                 case DATA_TYPE_NVLIST:
 177                         {
 178                                 nvlist_t *value;
 179
 180                                 VERIFY(nvpair_value_nvlist(elem, &value) == 0);
 181                                 (void) printf("%*s%s\n", indent, "",
 182                                     nvpair_name(elem));
 183                                 dump_nvlist(value, indent + 4);
 184                         }
 185                         break;
 186
 187                 case DATA_TYPE_NVLIST_ARRAY:
 188                         {
 189                                 nvlist_t **value;
 190                                 uint_t c, count;
 191
 192                                 VERIFY(nvpair_value_nvlist_array(elem, &value,
 193                                     &count) == 0);
 194
 195                                 for (c = 0; c < count; c++) {
 196                                         (void) printf("%*s%s[%u]\n", indent, "",
 197                                             nvpair_name(elem), c);
 198                                         dump_nvlist(value[c], indent + 8);
 199                                 }
 200                         }
 201                         break;
 202
 203                 default:
 204
 205                         (void) printf("bad config type %d for %s\n",
 206                             nvpair_type(elem), nvpair_name(elem));
 207                 }
 208         }
 209 }
 210
 211 /* ARGSUSED */
 212 static void
 213 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 214 {
 215         nvlist_t *nv;
 216         size_t nvsize = *(uint64_t *)data;
 217         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 218
 219         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
 220
 221         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 222
 223         umem_free(packed, nvsize);
 224
 225         dump_nvlist(nv, 8);
 226
 227         nvlist_free(nv);
 228 }
 229
 230 const char dump_zap_stars[] = "****************************************";
 231 const int dump_zap_width = sizeof (dump_zap_stars) - 1;
 232
 233 static void
 234 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
 235 {
 236         int i;
 237         int minidx = ZAP_HISTOGRAM_SIZE - 1;
 238         int maxidx = 0;
 239         uint64_t max = 0;
 240
 241         for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
 242                 if (histo[i] > max)
 243                         max = histo[i];
 244                 if (histo[i] > 0 && i > maxidx)
 245                         maxidx = i;
 246                 if (histo[i] > 0 && i < minidx)
 247                         minidx = i;
 248         }
 249
 250         if (max < dump_zap_width)
 251                 max = dump_zap_width;
 252
 253         for (i = minidx; i <= maxidx; i++)
 254                 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
 255                     &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
 256 }
 257
 258 static void
 259 dump_zap_stats(objset_t *os, uint64_t object)
 260 {
 261         int error;
 262         zap_stats_t zs;
 263
 264         error = zap_get_stats(os, object, &zs);
 265         if (error)
 266                 return;
 267
 268         if (zs.zs_ptrtbl_len == 0) {
 269                 ASSERT(zs.zs_num_blocks == 1);
 270                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 271                     (u_longlong_t)zs.zs_blocksize,
 272                     (u_longlong_t)zs.zs_num_entries);
 273                 return;
 274         }
 275
 276         (void) printf("\tFat ZAP stats:\n");
 277
 278         (void) printf("\t\tPointer table:\n");
 279         (void) printf("\t\t\t%llu elements\n",
 280             (u_longlong_t)zs.zs_ptrtbl_len);
 281         (void) printf("\t\t\tzt_blk: %llu\n",
 282             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 283         (void) printf("\t\t\tzt_numblks: %llu\n",
 284             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 285         (void) printf("\t\t\tzt_shift: %llu\n",
 286             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 287         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 288             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 289         (void) printf("\t\t\tzt_nextblk: %llu\n",
 290             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 291
 292         (void) printf("\t\tZAP entries: %llu\n",
 293             (u_longlong_t)zs.zs_num_entries);
 294         (void) printf("\t\tLeaf blocks: %llu\n",
 295             (u_longlong_t)zs.zs_num_leafs);
 296         (void) printf("\t\tTotal blocks: %llu\n",
 297             (u_longlong_t)zs.zs_num_blocks);
 298         (void) printf("\t\tzap_block_type: 0x%llx\n",
 299             (u_longlong_t)zs.zs_block_type);
 300         (void) printf("\t\tzap_magic: 0x%llx\n",
 301             (u_longlong_t)zs.zs_magic);
 302         (void) printf("\t\tzap_salt: 0x%llx\n",
 303             (u_longlong_t)zs.zs_salt);
 304
 305         (void) printf("\t\tLeafs with 2^n pointers:\n");
 306         dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
 307
 308         (void) printf("\t\tBlocks with n*5 entries:\n");
 309         dump_zap_histogram(zs.zs_blocks_with_n5_entries);
 310
 311         (void) printf("\t\tBlocks n/10 full:\n");
 312         dump_zap_histogram(zs.zs_blocks_n_tenths_full);
 313
 314         (void) printf("\t\tEntries with n chunks:\n");
 315         dump_zap_histogram(zs.zs_entries_using_n_chunks);
 316
 317         (void) printf("\t\tBuckets with n entries:\n");
 318         dump_zap_histogram(zs.zs_buckets_with_n_entries);
 319 }
 320
 321 /*ARGSUSED*/
 322 static void
 323 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 324 {
 325 }
 326
 327 /*ARGSUSED*/
 328 void
 329 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 330 {
 331 }
 332
 333 /*ARGSUSED*/
 334 static void
 335 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 336 {
 337 }
 338
 339 /*ARGSUSED*/
 340 static void
 341 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 342 {
 343         zap_cursor_t zc;
 344         zap_attribute_t attr;
 345         void *prop;
 346         int i;
 347
 348         dump_zap_stats(os, object);
 349         (void) printf("\n");
 350
 351         for (zap_cursor_init(&zc, os, object);
 352             zap_cursor_retrieve(&zc, &attr) == 0;
 353             zap_cursor_advance(&zc)) {
 354                 (void) printf("\t\t%s = ", attr.za_name);
 355                 if (attr.za_num_integers == 0) {
 356                         (void) printf("\n");
 357                         continue;
 358                 }
 359                 prop = umem_zalloc(attr.za_num_integers *
 360                     attr.za_integer_length, UMEM_NOFAIL);
 361                 (void) zap_lookup(os, object, attr.za_name,
 362                     attr.za_integer_length, attr.za_num_integers, prop);
 363                 if (attr.za_integer_length == 1) {
 364                         (void) printf("%s", (char *)prop);
 365                 } else {
 366                         for (i = 0; i < attr.za_num_integers; i++) {
 367                                 switch (attr.za_integer_length) {
 368                                 case 2:
 369                                         (void) printf("%u ",
 370                                             ((uint16_t *)prop)[i]);
 371                                         break;
 372                                 case 4:
 373                                         (void) printf("%u ",
 374                                             ((uint32_t *)prop)[i]);
 375                                         break;
 376                                 case 8:
 377                                         (void) printf("%lld ",
 378                                             (u_longlong_t)((int64_t *)prop)[i]);
 379                                         break;
 380                                 }
 381                         }
 382                 }
 383                 (void) printf("\n");
 384                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 385         }
 386         zap_cursor_fini(&zc);
 387 }
 388
 389 /*ARGSUSED*/
 390 static void
 391 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 392 {
 393         zap_cursor_t zc;
 394         zap_attribute_t attr;
 395         const char *typenames[] = {
 396                 /* 0 */ "not specified",
 397                 /* 1 */ "FIFO",
 398                 /* 2 */ "Character Device",
 399                 /* 3 */ "3 (invalid)",
 400                 /* 4 */ "Directory",
 401                 /* 5 */ "5 (invalid)",
 402                 /* 6 */ "Block Device",
 403                 /* 7 */ "7 (invalid)",
 404                 /* 8 */ "Regular File",
 405                 /* 9 */ "9 (invalid)",
 406                 /* 10 */ "Symbolic Link",
 407                 /* 11 */ "11 (invalid)",
 408                 /* 12 */ "Socket",
 409                 /* 13 */ "Door",
 410                 /* 14 */ "Event Port",
 411                 /* 15 */ "15 (invalid)",
 412         };
 413
 414         dump_zap_stats(os, object);
 415         (void) printf("\n");
 416
 417         for (zap_cursor_init(&zc, os, object);
 418             zap_cursor_retrieve(&zc, &attr) == 0;
 419             zap_cursor_advance(&zc)) {
 420                 (void) printf("\t\t%s = %lld (type: %s)\n",
 421                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 422                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 423         }
 424         zap_cursor_fini(&zc);
 425 }
 426
 427 static void
 428 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
 429 {
 430         uint64_t alloc, offset, entry;
 431         uint8_t mapshift = sm->sm_shift;
 432         uint64_t mapstart = sm->sm_start;
 433         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 434                             "INVALID", "INVALID", "INVALID", "INVALID" };
 435
 436         if (smo->smo_object == 0)
 437                 return;
 438
 439         /*
 440          * Print out the freelist entries in both encoded and decoded form.
 441          */
 442         alloc = 0;
 443         for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
 444                 VERIFY(0 == dmu_read(os, smo->smo_object, offset,
 445                     sizeof (entry), &entry, DMU_READ_PREFETCH));
 446                 if (SM_DEBUG_DECODE(entry)) {
 447                         (void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n",
 448                             (u_longlong_t)(offset / sizeof (entry)),
 449                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 450                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 451                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 452                 } else {
 453                         (void) printf("\t\t[%4llu]    %c  range:"
 454                             " %08llx-%08llx  size: %06llx\n",
 455                             (u_longlong_t)(offset / sizeof (entry)),
 456                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 457                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 458                             mapshift) + mapstart),
 459                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 460                             mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
 461                             mapshift)),
 462                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 463                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 464                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 465                         else
 466                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 467                 }
 468         }
 469         if (alloc != smo->smo_alloc) {
 470                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 471                     "with space map summary (%llu)\n",
 472                     (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
 473         }
 474 }
 475
 476 static void
 477 dump_metaslab_stats(metaslab_t *msp)
 478 {
 479         char maxbuf[5];
 480         space_map_t *sm = &msp->ms_map;
 481         avl_tree_t *t = sm->sm_pp_root;
 482         int free_pct = sm->sm_space * 100 / sm->sm_size;
 483
 484         nicenum(space_map_maxsize(sm), maxbuf);
 485
 486         (void) printf("\t %20s %10lu   %7s  %6s   %4s %4d%%\n",
 487             "segments", avl_numnodes(t), "maxsize", maxbuf,
 488             "freepct", free_pct);
 489 }
 490
 491 static void
 492 dump_metaslab(metaslab_t *msp)
 493 {
 494         char freebuf[5];
 495         space_map_obj_t *smo = &msp->ms_smo;
 496         vdev_t *vd = msp->ms_group->mg_vd;
 497         spa_t *spa = vd->vdev_spa;
 498
 499         nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf);
 500
 501         (void) printf(
 502             "\tvdev %5llu   offset %12llx   spacemap %6llu   free    %5s\n",
 503             (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start,
 504             (u_longlong_t)smo->smo_object, freebuf);
 505
 506         if (dump_opt['m'] > 1) {
 507                 mutex_enter(&msp->ms_lock);
 508                 VERIFY(space_map_load(&msp->ms_map, zfs_metaslab_ops,
 509                     SM_FREE, &msp->ms_smo, spa->spa_meta_objset) == 0);
 510                 dump_metaslab_stats(msp);
 511                 space_map_unload(&msp->ms_map);
 512                 mutex_exit(&msp->ms_lock);
 513         }
 514
 515         if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
 516                 ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift));
 517
 518                 mutex_enter(&msp->ms_lock);
 519                 dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map);
 520                 mutex_exit(&msp->ms_lock);
 521         }
 522
 523 }
 524
 525 static void
 526 dump_metaslabs(spa_t *spa)
 527 {
 528         vdev_t *rvd = spa->spa_root_vdev;
 529         vdev_t *vd;
 530         int c, m;
 531
 532         (void) printf("\nMetaslabs:\n");
 533
 534         for (c = 0; c < rvd->vdev_children; c++) {
 535                 vd = rvd->vdev_child[c];
 536
 537                 (void) printf("\t%-10s   %-19s   %-15s   %-10s\n",
 538                     "vdev", "offset", "spacemap", "free");
 539                 (void) printf("\t%10s   %19s   %15s   %10s\n",
 540                     "----------", "-------------------",
 541                     "---------------", "-------------");
 542
 543                 for (m = 0; m < vd->vdev_ms_count; m++)
 544                         dump_metaslab(vd->vdev_ms[m]);
 545                 (void) printf("\n");
 546         }
 547 }
 548
 549 static void
 550 dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
 551 {
 552         char *prefix = (void *)sm;
 553
 554         (void) printf("%s [%llu,%llu) length %llu\n",
 555             prefix,
 556             (u_longlong_t)start,
 557             (u_longlong_t)(start + size),
 558             (u_longlong_t)(size));
 559 }
 560
 561 static void
 562 dump_dtl(vdev_t *vd, int indent)
 563 {
 564         spa_t *spa = vd->vdev_spa;
 565         boolean_t required;
 566         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
 567         char prefix[256];
 568
 569         spa_vdev_state_enter(spa);
 570         required = vdev_dtl_required(vd);
 571         (void) spa_vdev_state_exit(spa, NULL, 0);
 572
 573         if (indent == 0)
 574                 (void) printf("\nDirty time logs:\n\n");
 575
 576         (void) printf("\t%*s%s [%s]\n", indent, "",
 577             vd->vdev_path ? vd->vdev_path :
 578             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
 579             required ? "DTL-required" : "DTL-expendable");
 580
 581         for (int t = 0; t < DTL_TYPES; t++) {
 582                 space_map_t *sm = &vd->vdev_dtl[t];
 583                 if (sm->sm_space == 0)
 584                         continue;
 585                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
 586                     indent + 2, "", name[t]);
 587                 mutex_enter(sm->sm_lock);
 588                 space_map_walk(sm, dump_dtl_seg, (void *)prefix);
 589                 mutex_exit(sm->sm_lock);
 590                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
 591                         dump_spacemap(spa->spa_meta_objset,
 592                             &vd->vdev_dtl_smo, sm);
 593         }
 594
 595         for (int c = 0; c < vd->vdev_children; c++)
 596                 dump_dtl(vd->vdev_child[c], indent + 4);
 597 }
 598
 599 /*ARGSUSED*/
 600 static void
 601 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 602 {
 603 }
 604
 605 static uint64_t
 606 blkid2offset(const dnode_phys_t *dnp, int level, uint64_t blkid)
 607 {
 608         if (level < 0)
 609                 return (blkid);
 610
 611         return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 612             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 613 }
 614
 615 static void
 616 sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas)
 617 {
 618         dva_t *dva = bp->blk_dva;
 619         int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1;
 620         int i;
 621
 622         blkbuf[0] = '\0';
 623
 624         for (i = 0; i < ndvas; i++)
 625                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 626                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 627                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 628                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 629
 630         (void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu",
 631             (u_longlong_t)BP_GET_LSIZE(bp),
 632             (u_longlong_t)BP_GET_PSIZE(bp),
 633             (u_longlong_t)bp->blk_fill,
 634             (u_longlong_t)bp->blk_birth);
 635 }
 636
 637 static void
 638 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
 639     const dnode_phys_t *dnp)
 640 {
 641         char blkbuf[BP_SPRINTF_LEN];
 642         int l;
 643
 644         ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 645         ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 646
 647         (void) printf("%16llx ",
 648             (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid));
 649
 650         ASSERT(zb->zb_level >= 0);
 651
 652         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 653                 if (l == zb->zb_level) {
 654                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
 655                 } else {
 656                         (void) printf(" ");
 657                 }
 658         }
 659
 660         sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
 661         (void) printf("%s\n", blkbuf);
 662 }
 663
 664 #define SET_BOOKMARK(zb, objset, object, level, blkid)  \
 665 {                                                       \
 666         (zb)->zb_objset = objset;                       \
 667         (zb)->zb_object = object;                       \
 668         (zb)->zb_level = level;                         \
 669         (zb)->zb_blkid = blkid;                         \
 670 }
 671
 672 static int
 673 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 674     blkptr_t *bp, const zbookmark_t *zb)
 675 {
 676         int err;
 677
 678         if (bp->blk_birth == 0)
 679                 return (0);
 680
 681         print_indirect(bp, zb, dnp);
 682
 683         if (BP_GET_LEVEL(bp) > 0) {
 684                 uint32_t flags = ARC_WAIT;
 685                 int i;
 686                 blkptr_t *cbp;
 687                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
 688                 arc_buf_t *buf;
 689                 uint64_t fill = 0;
 690
 691                 err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
 692                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
 693                 if (err)
 694                         return (err);
 695
 696                 /* recursively visit blocks below this */
 697                 cbp = buf->b_data;
 698                 for (i = 0; i < epb; i++, cbp++) {
 699                         zbookmark_t czb;
 700
 701                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
 702                             zb->zb_level - 1,
 703                             zb->zb_blkid * epb + i);
 704                         err = visit_indirect(spa, dnp, cbp, &czb);
 705                         if (err)
 706                                 break;
 707                         fill += cbp->blk_fill;
 708                 }
 709                 if (!err)
 710                         ASSERT3U(fill, ==, bp->blk_fill);
 711                 (void) arc_buf_remove_ref(buf, &buf);
 712         }
 713
 714         return (err);
 715 }
 716
 717 /*ARGSUSED*/
 718 static void
 719 dump_indirect(dnode_t *dn)
 720 {
 721         dnode_phys_t *dnp = dn->dn_phys;
 722         int j;
 723         zbookmark_t czb;
 724
 725         (void) printf("Indirect blocks:\n");
 726
 727         SET_BOOKMARK(&czb, dmu_objset_id(&dn->dn_objset->os),
 728             dn->dn_object, dnp->dn_nlevels - 1, 0);
 729         for (j = 0; j < dnp->dn_nblkptr; j++) {
 730                 czb.zb_blkid = j;
 731                 (void) visit_indirect(dmu_objset_spa(&dn->dn_objset->os), dnp,
 732                     &dnp->dn_blkptr[j], &czb);
 733         }
 734
 735         (void) printf("\n");
 736 }
 737
 738 /*ARGSUSED*/
 739 static void
 740 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
 741 {
 742         dsl_dir_phys_t *dd = data;
 743         time_t crtime;
 744         char nice[6];
 745
 746         if (dd == NULL)
 747                 return;
 748
 749         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
 750
 751         crtime = dd->dd_creation_time;
 752         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
 753         (void) printf("\t\thead_dataset_obj = %llu\n",
 754             (u_longlong_t)dd->dd_head_dataset_obj);
 755         (void) printf("\t\tparent_dir_obj = %llu\n",
 756             (u_longlong_t)dd->dd_parent_obj);
 757         (void) printf("\t\torigin_obj = %llu\n",
 758             (u_longlong_t)dd->dd_origin_obj);
 759         (void) printf("\t\tchild_dir_zapobj = %llu\n",
 760             (u_longlong_t)dd->dd_child_dir_zapobj);
 761         nicenum(dd->dd_used_bytes, nice);
 762         (void) printf("\t\tused_bytes = %s\n", nice);
 763         nicenum(dd->dd_compressed_bytes, nice);
 764         (void) printf("\t\tcompressed_bytes = %s\n", nice);
 765         nicenum(dd->dd_uncompressed_bytes, nice);
 766         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
 767         nicenum(dd->dd_quota, nice);
 768         (void) printf("\t\tquota = %s\n", nice);
 769         nicenum(dd->dd_reserved, nice);
 770         (void) printf("\t\treserved = %s\n", nice);
 771         (void) printf("\t\tprops_zapobj = %llu\n",
 772             (u_longlong_t)dd->dd_props_zapobj);
 773         (void) printf("\t\tdeleg_zapobj = %llu\n",
 774             (u_longlong_t)dd->dd_deleg_zapobj);
 775         (void) printf("\t\tflags = %llx\n",
 776             (u_longlong_t)dd->dd_flags);
 777
 778 #define DO(which) \
 779         nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
 780         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
 781         DO(HEAD);
 782         DO(SNAP);
 783         DO(CHILD);
 784         DO(CHILD_RSRV);
 785         DO(REFRSRV);
 786 #undef DO
 787 }
 788
 789 /*ARGSUSED*/
 790 static void
 791 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
 792 {
 793         dsl_dataset_phys_t *ds = data;
 794         time_t crtime;
 795         char used[6], compressed[6], uncompressed[6], unique[6];
 796         char blkbuf[BP_SPRINTF_LEN];
 797
 798         if (ds == NULL)
 799                 return;
 800
 801         ASSERT(size == sizeof (*ds));
 802         crtime = ds->ds_creation_time;
 803         nicenum(ds->ds_used_bytes, used);
 804         nicenum(ds->ds_compressed_bytes, compressed);
 805         nicenum(ds->ds_uncompressed_bytes, uncompressed);
 806         nicenum(ds->ds_unique_bytes, unique);
 807         sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp);
 808
 809         (void) printf("\t\tdir_obj = %llu\n",
 810             (u_longlong_t)ds->ds_dir_obj);
 811         (void) printf("\t\tprev_snap_obj = %llu\n",
 812             (u_longlong_t)ds->ds_prev_snap_obj);
 813         (void) printf("\t\tprev_snap_txg = %llu\n",
 814             (u_longlong_t)ds->ds_prev_snap_txg);
 815         (void) printf("\t\tnext_snap_obj = %llu\n",
 816             (u_longlong_t)ds->ds_next_snap_obj);
 817         (void) printf("\t\tsnapnames_zapobj = %llu\n",
 818             (u_longlong_t)ds->ds_snapnames_zapobj);
 819         (void) printf("\t\tnum_children = %llu\n",
 820             (u_longlong_t)ds->ds_num_children);
 821         (void) printf("\t\tuserrefs_obj = %llu\n",
 822             (u_longlong_t)ds->ds_userrefs_obj);
 823         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
 824         (void) printf("\t\tcreation_txg = %llu\n",
 825             (u_longlong_t)ds->ds_creation_txg);
 826         (void) printf("\t\tdeadlist_obj = %llu\n",
 827             (u_longlong_t)ds->ds_deadlist_obj);
 828         (void) printf("\t\tused_bytes = %s\n", used);
 829         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
 830         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
 831         (void) printf("\t\tunique = %s\n", unique);
 832         (void) printf("\t\tfsid_guid = %llu\n",
 833             (u_longlong_t)ds->ds_fsid_guid);
 834         (void) printf("\t\tguid = %llu\n",
 835             (u_longlong_t)ds->ds_guid);
 836         (void) printf("\t\tflags = %llx\n",
 837             (u_longlong_t)ds->ds_flags);
 838         (void) printf("\t\tnext_clones_obj = %llu\n",
 839             (u_longlong_t)ds->ds_next_clones_obj);
 840         (void) printf("\t\tprops_obj = %llu\n",
 841             (u_longlong_t)ds->ds_props_obj);
 842         (void) printf("\t\tbp = %s\n", blkbuf);
 843 }
 844
 845 static void
 846 dump_bplist(objset_t *mos, uint64_t object, char *name)
 847 {
 848         bplist_t bpl = { 0 };
 849         blkptr_t blk, *bp = &blk;
 850         uint64_t itor = 0;
 851         char bytes[6];
 852         char comp[6];
 853         char uncomp[6];
 854
 855         if (dump_opt['d'] < 3)
 856                 return;
 857
 858         mutex_init(&bpl.bpl_lock, NULL, MUTEX_DEFAULT, NULL);
 859         VERIFY(0 == bplist_open(&bpl, mos, object));
 860         if (bplist_empty(&bpl)) {
 861                 bplist_close(&bpl);
 862                 mutex_destroy(&bpl.bpl_lock);
 863                 return;
 864         }
 865
 866         nicenum(bpl.bpl_phys->bpl_bytes, bytes);
 867         if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) {
 868                 nicenum(bpl.bpl_phys->bpl_comp, comp);
 869                 nicenum(bpl.bpl_phys->bpl_uncomp, uncomp);
 870                 (void) printf("\n    %s: %llu entries, %s (%s/%s comp)\n",
 871                     name, (u_longlong_t)bpl.bpl_phys->bpl_entries,
 872                     bytes, comp, uncomp);
 873         } else {
 874                 (void) printf("\n    %s: %llu entries, %s\n",
 875                     name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes);
 876         }
 877
 878         if (dump_opt['d'] < 5) {
 879                 bplist_close(&bpl);
 880                 mutex_destroy(&bpl.bpl_lock);
 881                 return;
 882         }
 883
 884         (void) printf("\n");
 885
 886         while (bplist_iterate(&bpl, &itor, bp) == 0) {
 887                 char blkbuf[BP_SPRINTF_LEN];
 888
 889                 ASSERT(bp->blk_birth != 0);
 890                 sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
 891                 (void) printf("\tItem %3llu: %s\n",
 892                     (u_longlong_t)itor - 1, blkbuf);
 893         }
 894
 895         bplist_close(&bpl);
 896         mutex_destroy(&bpl.bpl_lock);
 897 }
 898
 899 static avl_tree_t idx_tree;
 900 static avl_tree_t domain_tree;
 901 static boolean_t fuid_table_loaded;
 902
 903 static void
 904 fuid_table_destroy()
 905 {
 906         if (fuid_table_loaded) {
 907                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
 908                 fuid_table_loaded = B_FALSE;
 909         }
 910 }
 911
 912 /*
 913  * print uid or gid information.
 914  * For normal POSIX id just the id is printed in decimal format.
 915  * For CIFS files with FUID the fuid is printed in hex followed by
 916  * the doman-rid string.
 917  */
 918 static void
 919 print_idstr(uint64_t id, const char *id_type)
 920 {
 921         if (FUID_INDEX(id)) {
 922                 char *domain;
 923
 924                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
 925                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
 926                     (u_longlong_t)id, domain, (int)FUID_RID(id));
 927         } else {
 928                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
 929         }
 930
 931 }
 932
 933 static void
 934 dump_uidgid(objset_t *os, znode_phys_t *zp)
 935 {
 936         uint32_t uid_idx, gid_idx;
 937
 938         uid_idx = FUID_INDEX(zp->zp_uid);
 939         gid_idx = FUID_INDEX(zp->zp_gid);
 940
 941         /* Load domain table, if not already loaded */
 942         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
 943                 uint64_t fuid_obj;
 944
 945                 /* first find the fuid object.  It lives in the master node */
 946                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
 947                     8, 1, &fuid_obj) == 0);
 948                 zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
 949                 (void) zfs_fuid_table_load(os, fuid_obj,
 950                     &idx_tree, &domain_tree);
 951                 fuid_table_loaded = B_TRUE;
 952         }
 953
 954         print_idstr(zp->zp_uid, "uid");
 955         print_idstr(zp->zp_gid, "gid");
 956 }
 957
 958 /*ARGSUSED*/
 959 static void
 960 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
 961 {
 962         znode_phys_t *zp = data;
 963         time_t z_crtime, z_atime, z_mtime, z_ctime;
 964         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
 965         int error;
 966
 967         ASSERT(size >= sizeof (znode_phys_t));
 968
 969         error = zfs_obj_to_path(os, object, path, sizeof (path));
 970         if (error != 0) {
 971                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
 972                     (u_longlong_t)object);
 973         }
 974
 975         if (dump_opt['d'] < 3) {
 976                 (void) printf("\t%s\n", path);
 977                 return;
 978         }
 979
 980         z_crtime = (time_t)zp->zp_crtime[0];
 981         z_atime = (time_t)zp->zp_atime[0];
 982         z_mtime = (time_t)zp->zp_mtime[0];
 983         z_ctime = (time_t)zp->zp_ctime[0];
 984
 985         (void) printf("\tpath   %s\n", path);
 986         dump_uidgid(os, zp);
 987         (void) printf("\tatime  %s", ctime(&z_atime));
 988         (void) printf("\tmtime  %s", ctime(&z_mtime));
 989         (void) printf("\tctime  %s", ctime(&z_ctime));
 990         (void) printf("\tcrtime %s", ctime(&z_crtime));
 991         (void) printf("\tgen    %llu\n", (u_longlong_t)zp->zp_gen);
 992         (void) printf("\tmode   %llo\n", (u_longlong_t)zp->zp_mode);
 993         (void) printf("\tsize   %llu\n", (u_longlong_t)zp->zp_size);
 994         (void) printf("\tparent %llu\n", (u_longlong_t)zp->zp_parent);
 995         (void) printf("\tlinks  %llu\n", (u_longlong_t)zp->zp_links);
 996         (void) printf("\txattr  %llu\n", (u_longlong_t)zp->zp_xattr);
 997         (void) printf("\trdev   0x%016llx\n", (u_longlong_t)zp->zp_rdev);
 998 }
 999
1000 /*ARGSUSED*/
1001 static void
1002 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1003 {
1004 }
1005
1006 /*ARGSUSED*/
1007 static void
1008 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1009 {
1010 }
1011
1012 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = {
1013         dump_none,              /* unallocated                  */
1014         dump_zap,               /* object directory             */
1015         dump_uint64,            /* object array                 */
1016         dump_none,              /* packed nvlist                */
1017         dump_packed_nvlist,     /* packed nvlist size           */
1018         dump_none,              /* bplist                       */
1019         dump_none,              /* bplist header                */
1020         dump_none,              /* SPA space map header         */
1021         dump_none,              /* SPA space map                */
1022         dump_none,              /* ZIL intent log               */
1023         dump_dnode,             /* DMU dnode                    */
1024         dump_dmu_objset,        /* DMU objset                   */
1025         dump_dsl_dir,           /* DSL directory                */
1026         dump_zap,               /* DSL directory child map      */
1027         dump_zap,               /* DSL dataset snap map         */
1028         dump_zap,               /* DSL props                    */
1029         dump_dsl_dataset,       /* DSL dataset                  */
1030         dump_znode,             /* ZFS znode                    */
1031         dump_acl,               /* ZFS V0 ACL                   */
1032         dump_uint8,             /* ZFS plain file               */
1033         dump_zpldir,            /* ZFS directory                */
1034         dump_zap,               /* ZFS master node              */
1035         dump_zap,               /* ZFS delete queue             */
1036         dump_uint8,             /* zvol object                  */
1037         dump_zap,               /* zvol prop                    */
1038         dump_uint8,             /* other uint8[]                */
1039         dump_uint64,            /* other uint64[]               */
1040         dump_zap,               /* other ZAP                    */
1041         dump_zap,               /* persistent error log         */
1042         dump_uint8,             /* SPA history                  */
1043         dump_uint64,            /* SPA history offsets          */
1044         dump_zap,               /* Pool properties              */
1045         dump_zap,               /* DSL permissions              */
1046         dump_acl,               /* ZFS ACL                      */
1047         dump_uint8,             /* ZFS SYSACL                   */
1048         dump_none,              /* FUID nvlist                  */
1049         dump_packed_nvlist,     /* FUID nvlist size             */
1050         dump_zap,               /* DSL dataset next clones      */
1051         dump_zap,               /* DSL scrub queue              */
1052         dump_zap,               /* ZFS user/group used          */
1053         dump_zap,               /* ZFS user/group quota         */
1054         dump_zap,               /* snapshot refcount tags       */
1055 };
1056
1057 static void
1058 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1059 {
1060         dmu_buf_t *db = NULL;
1061         dmu_object_info_t doi;
1062         dnode_t *dn;
1063         void *bonus = NULL;
1064         size_t bsize = 0;
1065         char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6];
1066         char aux[50];
1067         int error;
1068
1069         if (*print_header) {
1070                 (void) printf("\n    Object  lvl   iblk   dblk  lsize"
1071                     "  asize  type\n");
1072                 *print_header = 0;
1073         }
1074
1075         if (object == 0) {
1076                 dn = os->os->os_meta_dnode;
1077         } else {
1078                 error = dmu_bonus_hold(os, object, FTAG, &db);
1079                 if (error)
1080                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1081                             object, error);
1082                 bonus = db->db_data;
1083                 bsize = db->db_size;
1084                 dn = ((dmu_buf_impl_t *)db)->db_dnode;
1085         }
1086         dmu_object_info_from_dnode(dn, &doi);
1087
1088         nicenum(doi.doi_metadata_block_size, iblk);
1089         nicenum(doi.doi_data_block_size, dblk);
1090         nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1),
1091             lsize);
1092         nicenum(doi.doi_physical_blks << 9, asize);
1093         nicenum(doi.doi_bonus_size, bonus_size);
1094
1095         aux[0] = '\0';
1096
1097         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1098                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1099                     zio_checksum_table[doi.doi_checksum].ci_name);
1100         }
1101
1102         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1103                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1104                     zio_compress_table[doi.doi_compress].ci_name);
1105         }
1106
1107         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %s%s\n",
1108             (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize,
1109             asize, dmu_ot[doi.doi_type].ot_name, aux);
1110
1111         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1112                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %s\n",
1113                     "", "", "", "", bonus_size, "bonus",
1114                     dmu_ot[doi.doi_bonus_type].ot_name);
1115         }
1116
1117         if (verbosity >= 4) {
1118                 (void) printf("\tdnode flags: %s%s\n",
1119                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1120                     "USED_BYTES " : "",
1121                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1122                     "USERUSED_ACCOUNTED " : "");
1123                 (void) printf("\tdnode maxblkid: %llu\n",
1124                     (longlong_t)dn->dn_phys->dn_maxblkid);
1125
1126                 object_viewer[doi.doi_bonus_type](os, object, bonus, bsize);
1127                 object_viewer[doi.doi_type](os, object, NULL, 0);
1128                 *print_header = 1;
1129         }
1130
1131         if (verbosity >= 5)
1132                 dump_indirect(dn);
1133
1134         if (verbosity >= 5) {
1135                 /*
1136                  * Report the list of segments that comprise the object.
1137                  */
1138                 uint64_t start = 0;
1139                 uint64_t end;
1140                 uint64_t blkfill = 1;
1141                 int minlvl = 1;
1142
1143                 if (dn->dn_type == DMU_OT_DNODE) {
1144                         minlvl = 0;
1145                         blkfill = DNODES_PER_BLOCK;
1146                 }
1147
1148                 for (;;) {
1149                         error = dnode_next_offset(dn,
1150                             0, &start, minlvl, blkfill, 0);
1151                         if (error)
1152                                 break;
1153                         end = start;
1154                         error = dnode_next_offset(dn,
1155                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1156                         nicenum(end - start, segsize);
1157                         (void) printf("\t\tsegment [%016llx, %016llx)"
1158                             " size %5s\n", (u_longlong_t)start,
1159                             (u_longlong_t)end, segsize);
1160                         if (error)
1161                                 break;
1162                         start = end;
1163                 }
1164         }
1165
1166         if (db != NULL)
1167                 dmu_buf_rele(db, FTAG);
1168 }
1169
1170 static char *objset_types[DMU_OST_NUMTYPES] = {
1171         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1172
1173 static void
1174 dump_dir(objset_t *os)
1175 {
1176         dmu_objset_stats_t dds;
1177         uint64_t object, object_count;
1178         uint64_t refdbytes, usedobjs, scratch;
1179         char numbuf[8];
1180         char blkbuf[BP_SPRINTF_LEN + 20];
1181         char osname[MAXNAMELEN];
1182         char *type = "UNKNOWN";
1183         int verbosity = dump_opt['d'];
1184         int print_header = 1;
1185         int i, error;
1186
1187         dmu_objset_fast_stat(os, &dds);
1188
1189         if (dds.dds_type < DMU_OST_NUMTYPES)
1190                 type = objset_types[dds.dds_type];
1191
1192         if (dds.dds_type == DMU_OST_META) {
1193                 dds.dds_creation_txg = TXG_INITIAL;
1194                 usedobjs = os->os->os_rootbp->blk_fill;
1195                 refdbytes = os->os->os_spa->spa_dsl_pool->
1196                     dp_mos_dir->dd_phys->dd_used_bytes;
1197         } else {
1198                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1199         }
1200
1201         ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill);
1202
1203         nicenum(refdbytes, numbuf);
1204
1205         if (verbosity >= 4) {
1206                 (void) sprintf(blkbuf + strlen(blkbuf), ", rootbp ");
1207                 (void) sprintf_blkptr(blkbuf + strlen(blkbuf),
1208                     BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp);
1209         } else {
1210                 blkbuf[0] = '\0';
1211         }
1212
1213         dmu_objset_name(os, osname);
1214
1215         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1216             "%s, %llu objects%s\n",
1217             osname, type, (u_longlong_t)dmu_objset_id(os),
1218             (u_longlong_t)dds.dds_creation_txg,
1219             numbuf, (u_longlong_t)usedobjs, blkbuf);
1220
1221         dump_intent_log(dmu_objset_zil(os));
1222
1223         if (dmu_objset_ds(os) != NULL)
1224                 dump_bplist(dmu_objset_pool(os)->dp_meta_objset,
1225                     dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist");
1226
1227         if (verbosity < 2)
1228                 return;
1229
1230         if (os->os->os_rootbp->blk_birth == 0)
1231                 return;
1232
1233         if (zopt_objects != 0) {
1234                 for (i = 0; i < zopt_objects; i++)
1235                         dump_object(os, zopt_object[i], verbosity,
1236                             &print_header);
1237                 (void) printf("\n");
1238                 return;
1239         }
1240
1241         dump_object(os, 0, verbosity, &print_header);
1242         object_count = 0;
1243         if (os->os->os_userused_dnode &&
1244             os->os->os_userused_dnode->dn_type != 0) {
1245                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1246                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1247         }
1248
1249         object = 0;
1250         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1251                 dump_object(os, object, verbosity, &print_header);
1252                 object_count++;
1253         }
1254
1255         ASSERT3U(object_count, ==, usedobjs);
1256
1257         (void) printf("\n");
1258
1259         if (error != ESRCH) {
1260                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1261                 abort();
1262         }
1263 }
1264
1265 static void
1266 dump_uberblock(uberblock_t *ub)
1267 {
1268         time_t timestamp = ub->ub_timestamp;
1269
1270         (void) printf("Uberblock\n\n");
1271         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1272         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1273         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1274         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1275         (void) printf("\ttimestamp = %llu UTC = %s",
1276             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1277         if (dump_opt['u'] >= 3) {
1278                 char blkbuf[BP_SPRINTF_LEN];
1279                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp);
1280                 (void) printf("\trootbp = %s\n", blkbuf);
1281         }
1282         (void) printf("\n");
1283 }
1284
1285 static void
1286 dump_config(const char *pool)
1287 {
1288         spa_t *spa = NULL;
1289
1290         mutex_enter(&spa_namespace_lock);
1291         while ((spa = spa_next(spa)) != NULL) {
1292                 if (pool == NULL)
1293                         (void) printf("%s\n", spa_name(spa));
1294                 if (pool == NULL || strcmp(pool, spa_name(spa)) == 0)
1295                         dump_nvlist(spa->spa_config, 4);
1296         }
1297         mutex_exit(&spa_namespace_lock);
1298 }
1299
1300 static void
1301 dump_cachefile(const char *cachefile)
1302 {
1303         int fd;
1304         struct stat64 statbuf;
1305         char *buf;
1306         nvlist_t *config;
1307
1308         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1309                 (void) printf("cannot open '%s': %s\n", cachefile,
1310                     strerror(errno));
1311                 exit(1);
1312         }
1313
1314         if (fstat64(fd, &statbuf) != 0) {
1315                 (void) printf("failed to stat '%s': %s\n", cachefile,
1316                     strerror(errno));
1317                 exit(1);
1318         }
1319
1320         if ((buf = malloc(statbuf.st_size)) == NULL) {
1321                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1322                     (u_longlong_t)statbuf.st_size);
1323                 exit(1);
1324         }
1325
1326         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1327                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1328                     (u_longlong_t)statbuf.st_size);
1329                 exit(1);
1330         }
1331
1332         (void) close(fd);
1333
1334         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1335                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1336                 exit(1);
1337         }
1338
1339         free(buf);
1340
1341         dump_nvlist(config, 0);
1342
1343         nvlist_free(config);
1344 }
1345
1346 static void
1347 dump_label(const char *dev)
1348 {
1349         int fd;
1350         vdev_label_t label;
1351         char *buf = label.vl_vdev_phys.vp_nvlist;
1352         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1353         struct stat64 statbuf;
1354         uint64_t psize;
1355         int l;
1356
1357         if ((fd = open64(dev, O_RDONLY)) < 0) {
1358                 (void) printf("cannot open '%s': %s\n", dev, strerror(errno));
1359                 exit(1);
1360         }
1361
1362         if (fstat64(fd, &statbuf) != 0) {
1363                 (void) printf("failed to stat '%s': %s\n", dev,
1364                     strerror(errno));
1365                 exit(1);
1366         }
1367
1368         psize = statbuf.st_size;
1369         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1370
1371         for (l = 0; l < VDEV_LABELS; l++) {
1372
1373                 nvlist_t *config = NULL;
1374
1375                 (void) printf("--------------------------------------------\n");
1376                 (void) printf("LABEL %d\n", l);
1377                 (void) printf("--------------------------------------------\n");
1378
1379                 if (pread64(fd, &label, sizeof (label),
1380                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1381                         (void) printf("failed to read label %d\n", l);
1382                         continue;
1383                 }
1384
1385                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1386                         (void) printf("failed to unpack label %d\n", l);
1387                         continue;
1388                 }
1389                 dump_nvlist(config, 4);
1390                 nvlist_free(config);
1391         }
1392 }
1393
1394 /*ARGSUSED*/
1395 static int
1396 dump_one_dir(char *dsname, void *arg)
1397 {
1398         int error;
1399         objset_t *os;
1400
1401         error = dmu_objset_open(dsname, DMU_OST_ANY,
1402             DS_MODE_USER | DS_MODE_READONLY, &os);
1403         if (error) {
1404                 (void) printf("Could not open %s\n", dsname);
1405                 return (0);
1406         }
1407         dump_dir(os);
1408         dmu_objset_close(os);
1409         fuid_table_destroy();
1410         return (0);
1411 }
1412
1413 static void
1414 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
1415 {
1416         vdev_t *vd = sm->sm_ppd;
1417
1418         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
1419             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
1420 }
1421
1422 /* ARGSUSED */
1423 static void
1424 zdb_space_map_load(space_map_t *sm)
1425 {
1426 }
1427
1428 static void
1429 zdb_space_map_unload(space_map_t *sm)
1430 {
1431         space_map_vacate(sm, zdb_leak, sm);
1432 }
1433
1434 /* ARGSUSED */
1435 static void
1436 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
1437 {
1438 }
1439
1440 static space_map_ops_t zdb_space_map_ops = {
1441         zdb_space_map_load,
1442         zdb_space_map_unload,
1443         NULL,   /* alloc */
1444         zdb_space_map_claim,
1445         NULL,   /* free */
1446         NULL    /* maxsize */
1447 };
1448
1449 static void
1450 zdb_leak_init(spa_t *spa)
1451 {
1452         vdev_t *rvd = spa->spa_root_vdev;
1453
1454         for (int c = 0; c < rvd->vdev_children; c++) {
1455                 vdev_t *vd = rvd->vdev_child[c];
1456                 for (int m = 0; m < vd->vdev_ms_count; m++) {
1457                         metaslab_t *msp = vd->vdev_ms[m];
1458                         mutex_enter(&msp->ms_lock);
1459                         VERIFY(space_map_load(&msp->ms_map, &zdb_space_map_ops,
1460                             SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset) == 0);
1461                         msp->ms_map.sm_ppd = vd;
1462                         mutex_exit(&msp->ms_lock);
1463                 }
1464         }
1465 }
1466
1467 static void
1468 zdb_leak_fini(spa_t *spa)
1469 {
1470         vdev_t *rvd = spa->spa_root_vdev;
1471
1472         for (int c = 0; c < rvd->vdev_children; c++) {
1473                 vdev_t *vd = rvd->vdev_child[c];
1474                 for (int m = 0; m < vd->vdev_ms_count; m++) {
1475                         metaslab_t *msp = vd->vdev_ms[m];
1476                         mutex_enter(&msp->ms_lock);
1477                         space_map_unload(&msp->ms_map);
1478                         mutex_exit(&msp->ms_lock);
1479                 }
1480         }
1481 }
1482
1483 /*
1484  * Verify that the sum of the sizes of all blocks in the pool adds up
1485  * to the SPA's sa_alloc total.
1486  */
1487 typedef struct zdb_blkstats {
1488         uint64_t        zb_asize;
1489         uint64_t        zb_lsize;
1490         uint64_t        zb_psize;
1491         uint64_t        zb_count;
1492 } zdb_blkstats_t;
1493
1494 #define DMU_OT_DEFERRED DMU_OT_NONE
1495 #define DMU_OT_TOTAL    DMU_OT_NUMTYPES
1496
1497 #define ZB_TOTAL        DN_MAX_LEVELS
1498
1499 typedef struct zdb_cb {
1500         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1];
1501         uint64_t        zcb_errors[256];
1502         int             zcb_readfails;
1503         int             zcb_haderrors;
1504 } zdb_cb_t;
1505
1506 static void
1507 zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, dmu_object_type_t type)
1508 {
1509         for (int i = 0; i < 4; i++) {
1510                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1511                 int t = (i & 1) ? type : DMU_OT_TOTAL;
1512                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1513
1514                 zb->zb_asize += BP_GET_ASIZE(bp);
1515                 zb->zb_lsize += BP_GET_LSIZE(bp);
1516                 zb->zb_psize += BP_GET_PSIZE(bp);
1517                 zb->zb_count++;
1518         }
1519
1520         if (dump_opt['S']) {
1521                 boolean_t print_sig;
1522
1523                 print_sig = !zdb_sig_user_data || (BP_GET_LEVEL(bp) == 0 &&
1524                     BP_GET_TYPE(bp) == DMU_OT_PLAIN_FILE_CONTENTS);
1525
1526                 if (BP_GET_CHECKSUM(bp) < zdb_sig_cksumalg)
1527                         print_sig = B_FALSE;
1528
1529                 if (print_sig) {
1530                         (void) printf("%llu\t%lld\t%lld\t%s\t%s\t%s\t"
1531                             "%llx:%llx:%llx:%llx\n",
1532                             (u_longlong_t)BP_GET_LEVEL(bp),
1533                             (longlong_t)BP_GET_PSIZE(bp),
1534                             (longlong_t)BP_GET_NDVAS(bp),
1535                             dmu_ot[BP_GET_TYPE(bp)].ot_name,
1536                             zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1537                             zio_compress_table[BP_GET_COMPRESS(bp)].ci_name,
1538                             (u_longlong_t)bp->blk_cksum.zc_word[0],
1539                             (u_longlong_t)bp->blk_cksum.zc_word[1],
1540                             (u_longlong_t)bp->blk_cksum.zc_word[2],
1541                             (u_longlong_t)bp->blk_cksum.zc_word[3]);
1542                 }
1543         }
1544
1545         if (!dump_opt['L'])
1546                 VERIFY(zio_wait(zio_claim(NULL, spa, spa_first_txg(spa), bp,
1547                     NULL, NULL, ZIO_FLAG_MUSTSUCCEED)) == 0);
1548 }
1549
1550 static int
1551 zdb_blkptr_cb(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb,
1552     const dnode_phys_t *dnp, void *arg)
1553 {
1554         zdb_cb_t *zcb = arg;
1555         char blkbuf[BP_SPRINTF_LEN];
1556         dmu_object_type_t type;
1557         boolean_t is_l0_metadata;
1558
1559         if (bp == NULL)
1560                 return (0);
1561
1562         type = BP_GET_TYPE(bp);
1563
1564         zdb_count_block(spa, zcb, bp, type);
1565
1566         /*
1567          * if we do metadata-only checksumming there's no need to checksum
1568          * indirect blocks here because it is done during traverse
1569          */
1570         is_l0_metadata = (BP_GET_LEVEL(bp) == 0 && type < DMU_OT_NUMTYPES &&
1571             dmu_ot[type].ot_metadata);
1572
1573         if (dump_opt['c'] > 1 || dump_opt['S'] ||
1574             (dump_opt['c'] && is_l0_metadata)) {
1575                 int ioerr, size;
1576                 void *data;
1577
1578                 size = BP_GET_LSIZE(bp);
1579                 data = malloc(size);
1580                 ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
1581                     NULL, NULL, ZIO_PRIORITY_ASYNC_READ,
1582                     ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB, zb));
1583                 free(data);
1584
1585                 /* We expect io errors on intent log */
1586                 if (ioerr && type != DMU_OT_INTENT_LOG) {
1587                         zcb->zcb_haderrors = 1;
1588                         zcb->zcb_errors[ioerr]++;
1589
1590                         if (dump_opt['b'] >= 2)
1591                                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1592                         else
1593                                 blkbuf[0] = '\0';
1594
1595                         if (!dump_opt['S']) {
1596                                 (void) printf("zdb_blkptr_cb: "
1597                                     "Got error %d reading "
1598                                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
1599                                     ioerr,
1600                                     (u_longlong_t)zb->zb_objset,
1601                                     (u_longlong_t)zb->zb_object,
1602                                     (u_longlong_t)zb->zb_level,
1603                                     (u_longlong_t)zb->zb_blkid,
1604                                     blkbuf);
1605                         }
1606                 }
1607         }
1608
1609         zcb->zcb_readfails = 0;
1610
1611         if (dump_opt['b'] >= 4) {
1612                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1613                 (void) printf("objset %llu object %llu offset 0x%llx %s\n",
1614                     (u_longlong_t)zb->zb_objset,
1615                     (u_longlong_t)zb->zb_object,
1616                     (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid),
1617                     blkbuf);
1618         }
1619
1620         return (0);
1621 }
1622
1623 static int
1624 dump_block_stats(spa_t *spa)
1625 {
1626         zdb_cb_t zcb = { 0 };
1627         zdb_blkstats_t *zb, *tzb;
1628         uint64_t alloc, space, logalloc;
1629         vdev_t *rvd = spa->spa_root_vdev;
1630         int leaks = 0;
1631         int c, e;
1632
1633         if (!dump_opt['S']) {
1634                 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
1635                     (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
1636                     (dump_opt['c'] == 1) ? "metadata " : "",
1637                     dump_opt['c'] ? "checksums " : "",
1638                     (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
1639                     !dump_opt['L'] ? "nothing leaked " : "");
1640         }
1641
1642         /*
1643          * Load all space maps as SM_ALLOC maps, then traverse the pool
1644          * claiming each block we discover.  If the pool is perfectly
1645          * consistent, the space maps will be empty when we're done.
1646          * Anything left over is a leak; any block we can't claim (because
1647          * it's not part of any space map) is a double allocation,
1648          * reference to a freed block, or an unclaimed log block.
1649          */
1650         if (!dump_opt['L'])
1651                 zdb_leak_init(spa);
1652
1653         /*
1654          * If there's a deferred-free bplist, process that first.
1655          */
1656         if (spa->spa_sync_bplist_obj != 0) {
1657                 bplist_t *bpl = &spa->spa_sync_bplist;
1658                 blkptr_t blk;
1659                 uint64_t itor = 0;
1660
1661                 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset,
1662                     spa->spa_sync_bplist_obj));
1663
1664                 while (bplist_iterate(bpl, &itor, &blk) == 0) {
1665                         if (dump_opt['b'] >= 4) {
1666                                 char blkbuf[BP_SPRINTF_LEN];
1667                                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk);
1668                                 (void) printf("[%s] %s\n",
1669                                     "deferred free", blkbuf);
1670                         }
1671                         zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED);
1672                 }
1673
1674                 bplist_close(bpl);
1675         }
1676
1677         zcb.zcb_haderrors |= traverse_pool(spa, zdb_blkptr_cb, &zcb);
1678
1679         if (zcb.zcb_haderrors && !dump_opt['S']) {
1680                 (void) printf("\nError counts:\n\n");
1681                 (void) printf("\t%5s  %s\n", "errno", "count");
1682                 for (e = 0; e < 256; e++) {
1683                         if (zcb.zcb_errors[e] != 0) {
1684                                 (void) printf("\t%5d  %llu\n",
1685                                     e, (u_longlong_t)zcb.zcb_errors[e]);
1686                         }
1687                 }
1688         }
1689
1690         /*
1691          * Report any leaked segments.
1692          */
1693         if (!dump_opt['L'])
1694                 zdb_leak_fini(spa);
1695
1696         /*
1697          * If we're interested in printing out the blkptr signatures,
1698          * return now as we don't print out anything else (including
1699          * errors and leaks).
1700          */
1701         if (dump_opt['S'])
1702                 return (zcb.zcb_haderrors ? 3 : 0);
1703
1704         alloc = spa_get_alloc(spa);
1705         space = spa_get_space(spa);
1706
1707         /*
1708          * Log blocks allocated from a separate log device don't count
1709          * as part of the normal pool space; factor them in here.
1710          */
1711         logalloc = 0;
1712
1713         for (c = 0; c < rvd->vdev_children; c++)
1714                 if (rvd->vdev_child[c]->vdev_islog)
1715                         logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc;
1716
1717         tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL];
1718
1719         if (tzb->zb_asize == alloc + logalloc) {
1720                 if (!dump_opt['L'])
1721                         (void) printf("\n\tNo leaks (block sum matches space"
1722                             " maps exactly)\n");
1723         } else {
1724                 (void) printf("block traversal size %llu != alloc %llu "
1725                     "(%s %lld)\n",
1726                     (u_longlong_t)tzb->zb_asize,
1727                     (u_longlong_t)alloc + logalloc,
1728                     (dump_opt['L']) ? "unreachable" : "leaked",
1729                     (longlong_t)(alloc + logalloc - tzb->zb_asize));
1730                 leaks = 1;
1731         }
1732
1733         if (tzb->zb_count == 0)
1734                 return (2);
1735
1736         (void) printf("\n");
1737         (void) printf("\tbp count:      %10llu\n",
1738             (u_longlong_t)tzb->zb_count);
1739         (void) printf("\tbp logical:    %10llu\t avg: %6llu\n",
1740             (u_longlong_t)tzb->zb_lsize,
1741             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
1742         (void) printf("\tbp physical:   %10llu\t avg:"
1743             " %6llu\tcompression: %6.2f\n",
1744             (u_longlong_t)tzb->zb_psize,
1745             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
1746             (double)tzb->zb_lsize / tzb->zb_psize);
1747         (void) printf("\tbp allocated:  %10llu\t avg:"
1748             " %6llu\tcompression: %6.2f\n",
1749             (u_longlong_t)tzb->zb_asize,
1750             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
1751             (double)tzb->zb_lsize / tzb->zb_asize);
1752         (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n",
1753             (u_longlong_t)alloc, 100.0 * alloc / space);
1754
1755         if (dump_opt['b'] >= 2) {
1756                 int l, t, level;
1757                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
1758                     "\t  avg\t comp\t%%Total\tType\n");
1759
1760                 for (t = 0; t <= DMU_OT_NUMTYPES; t++) {
1761                         char csize[6], lsize[6], psize[6], asize[6], avg[6];
1762                         char *typename;
1763
1764                         typename = t == DMU_OT_DEFERRED ? "deferred free" :
1765                             t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name;
1766
1767                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
1768                                 (void) printf("%6s\t%5s\t%5s\t%5s"
1769                                     "\t%5s\t%5s\t%6s\t%s\n",
1770                                     "-",
1771                                     "-",
1772                                     "-",
1773                                     "-",
1774                                     "-",
1775                                     "-",
1776                                     "-",
1777                                     typename);
1778                                 continue;
1779                         }
1780
1781                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
1782                                 level = (l == -1 ? ZB_TOTAL : l);
1783                                 zb = &zcb.zcb_type[level][t];
1784
1785                                 if (zb->zb_asize == 0)
1786                                         continue;
1787
1788                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
1789                                         continue;
1790
1791                                 if (level == 0 && zb->zb_asize ==
1792                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
1793                                         continue;
1794
1795                                 nicenum(zb->zb_count, csize);
1796                                 nicenum(zb->zb_lsize, lsize);
1797                                 nicenum(zb->zb_psize, psize);
1798                                 nicenum(zb->zb_asize, asize);
1799                                 nicenum(zb->zb_asize / zb->zb_count, avg);
1800
1801                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
1802                                     "\t%5.2f\t%6.2f\t",
1803                                     csize, lsize, psize, asize, avg,
1804                                     (double)zb->zb_lsize / zb->zb_psize,
1805                                     100.0 * zb->zb_asize / tzb->zb_asize);
1806
1807                                 if (level == ZB_TOTAL)
1808                                         (void) printf("%s\n", typename);
1809                                 else
1810                                         (void) printf("    L%d %s\n",
1811                                             level, typename);
1812                         }
1813                 }
1814         }
1815
1816         (void) printf("\n");
1817
1818         if (leaks)
1819                 return (2);
1820
1821         if (zcb.zcb_haderrors)
1822                 return (3);
1823
1824         return (0);
1825 }
1826
1827 static void
1828 dump_zpool(spa_t *spa)
1829 {
1830         dsl_pool_t *dp = spa_get_dsl(spa);
1831         int rc = 0;
1832
1833         if (dump_opt['u'])
1834                 dump_uberblock(&spa->spa_uberblock);
1835
1836         if (dump_opt['d'] || dump_opt['i'] || dump_opt['m']) {
1837                 dump_dir(dp->dp_meta_objset);
1838                 if (dump_opt['d'] >= 3) {
1839                         dump_bplist(dp->dp_meta_objset,
1840                             spa->spa_sync_bplist_obj, "Deferred frees");
1841                         dump_dtl(spa->spa_root_vdev, 0);
1842                 }
1843
1844                 if (dump_opt['d'] >= 3 || dump_opt['m'])
1845                         dump_metaslabs(spa);
1846
1847                 (void) dmu_objset_find(spa_name(spa), dump_one_dir, NULL,
1848                     DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
1849         }
1850
1851         if (dump_opt['b'] || dump_opt['c'] || dump_opt['S'])
1852                 rc = dump_block_stats(spa);
1853
1854         if (dump_opt['s'])
1855                 show_pool_stats(spa);
1856
1857         if (rc != 0)
1858                 exit(rc);
1859 }
1860
1861 #define ZDB_FLAG_CHECKSUM       0x0001
1862 #define ZDB_FLAG_DECOMPRESS     0x0002
1863 #define ZDB_FLAG_BSWAP          0x0004
1864 #define ZDB_FLAG_GBH            0x0008
1865 #define ZDB_FLAG_INDIRECT       0x0010
1866 #define ZDB_FLAG_PHYS           0x0020
1867 #define ZDB_FLAG_RAW            0x0040
1868 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
1869
1870 int flagbits[256];
1871
1872 static void
1873 zdb_print_blkptr(blkptr_t *bp, int flags)
1874 {
1875         dva_t *dva = bp->blk_dva;
1876         int d;
1877
1878         if (flags & ZDB_FLAG_BSWAP)
1879                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
1880         /*
1881          * Super-ick warning:  This code is also duplicated in
1882          * cmd/mdb/common/modules/zfs/zfs.c .  Yeah, I hate code
1883          * replication, too.
1884          */
1885         for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1886                 (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d,
1887                     (longlong_t)DVA_GET_VDEV(&dva[d]),
1888                     (longlong_t)DVA_GET_OFFSET(&dva[d]));
1889                 (void) printf("\tDVA[%d]:       GANG: %-5s  GRID:  %04llx\t"
1890                     "ASIZE: %llx\n", d,
1891                     DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE",
1892                     (longlong_t)DVA_GET_GRID(&dva[d]),
1893                     (longlong_t)DVA_GET_ASIZE(&dva[d]));
1894                 (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d,
1895                     (u_longlong_t)DVA_GET_VDEV(&dva[d]),
1896                     (longlong_t)DVA_GET_OFFSET(&dva[d]),
1897                     (longlong_t)BP_GET_PSIZE(bp),
1898                     BP_SHOULD_BYTESWAP(bp) ? "e" : "",
1899                     !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ?
1900                     "d" : "",
1901                     DVA_GET_GANG(&dva[d]) ? "g" : "",
1902                     BP_GET_COMPRESS(bp) != 0 ? "d" : "");
1903         }
1904         (void) printf("\tLSIZE:  %-16llx\t\tPSIZE: %llx\n",
1905             (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp));
1906         (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE:  %s\n",
1907             BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG",
1908             dmu_ot[BP_GET_TYPE(bp)].ot_name);
1909         (void) printf("\tBIRTH:  %-16llx   LEVEL: %-2llu\tFILL:  %llx\n",
1910             (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp),
1911             (u_longlong_t)bp->blk_fill);
1912         (void) printf("\tCKFUNC: %-16s\t\tCOMP:  %s\n",
1913             zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1914             zio_compress_table[BP_GET_COMPRESS(bp)].ci_name);
1915         (void) printf("\tCKSUM:  %llx:%llx:%llx:%llx\n",
1916             (u_longlong_t)bp->blk_cksum.zc_word[0],
1917             (u_longlong_t)bp->blk_cksum.zc_word[1],
1918             (u_longlong_t)bp->blk_cksum.zc_word[2],
1919             (u_longlong_t)bp->blk_cksum.zc_word[3]);
1920 }
1921
1922 static void
1923 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
1924 {
1925         int i;
1926
1927         for (i = 0; i < nbps; i++)
1928                 zdb_print_blkptr(&bp[i], flags);
1929 }
1930
1931 static void
1932 zdb_dump_gbh(void *buf, int flags)
1933 {
1934         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
1935 }
1936
1937 static void
1938 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
1939 {
1940         if (flags & ZDB_FLAG_BSWAP)
1941                 byteswap_uint64_array(buf, size);
1942         (void) write(2, buf, size);
1943 }
1944
1945 static void
1946 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
1947 {
1948         uint64_t *d = (uint64_t *)buf;
1949         int nwords = size / sizeof (uint64_t);
1950         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
1951         int i, j;
1952         char *hdr, *c;
1953
1954
1955         if (do_bswap)
1956                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
1957         else
1958                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
1959
1960         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
1961
1962         for (i = 0; i < nwords; i += 2) {
1963                 (void) printf("%06llx:  %016llx  %016llx  ",
1964                     (u_longlong_t)(i * sizeof (uint64_t)),
1965                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
1966                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
1967
1968                 c = (char *)&d[i];
1969                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
1970                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
1971                 (void) printf("\n");
1972         }
1973 }
1974
1975 /*
1976  * There are two acceptable formats:
1977  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
1978  *      child[.child]*    - For example: 0.1.1
1979  *
1980  * The second form can be used to specify arbitrary vdevs anywhere
1981  * in the heirarchy.  For example, in a pool with a mirror of
1982  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
1983  */
1984 static vdev_t *
1985 zdb_vdev_lookup(vdev_t *vdev, char *path)
1986 {
1987         char *s, *p, *q;
1988         int i;
1989
1990         if (vdev == NULL)
1991                 return (NULL);
1992
1993         /* First, assume the x.x.x.x format */
1994         i = (int)strtoul(path, &s, 10);
1995         if (s == path || (s && *s != '.' && *s != '\0'))
1996                 goto name;
1997         if (i < 0 || i >= vdev->vdev_children)
1998                 return (NULL);
1999
2000         vdev = vdev->vdev_child[i];
2001         if (*s == '\0')
2002                 return (vdev);
2003         return (zdb_vdev_lookup(vdev, s+1));
2004
2005 name:
2006         for (i = 0; i < vdev->vdev_children; i++) {
2007                 vdev_t *vc = vdev->vdev_child[i];
2008
2009                 if (vc->vdev_path == NULL) {
2010                         vc = zdb_vdev_lookup(vc, path);
2011                         if (vc == NULL)
2012                                 continue;
2013                         else
2014                                 return (vc);
2015                 }
2016
2017                 p = strrchr(vc->vdev_path, '/');
2018                 p = p ? p + 1 : vc->vdev_path;
2019                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2020
2021                 if (strcmp(vc->vdev_path, path) == 0)
2022                         return (vc);
2023                 if (strcmp(p, path) == 0)
2024                         return (vc);
2025                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2026                         return (vc);
2027         }
2028
2029         return (NULL);
2030 }
2031
2032 /*
2033  * Read a block from a pool and print it out.  The syntax of the
2034  * block descriptor is:
2035  *
2036  *      pool:vdev_specifier:offset:size[:flags]
2037  *
2038  *      pool           - The name of the pool you wish to read from
2039  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2040  *      offset         - offset, in hex, in bytes
2041  *      size           - Amount of data to read, in hex, in bytes
2042  *      flags          - A string of characters specifying options
2043  *               b: Decode a blkptr at given offset within block
2044  *              *c: Calculate and display checksums
2045  *              *d: Decompress data before dumping
2046  *               e: Byteswap data before dumping
2047  *              *g: Display data as a gang block header
2048  *              *i: Display as an indirect block
2049  *               p: Do I/O to physical offset
2050  *               r: Dump raw data to stdout
2051  *
2052  *              * = not yet implemented
2053  */
2054 static void
2055 zdb_read_block(char *thing, spa_t **spap)
2056 {
2057         spa_t *spa = *spap;
2058         int flags = 0;
2059         uint64_t offset = 0, size = 0, blkptr_offset = 0;
2060         zio_t *zio;
2061         vdev_t *vd;
2062         void *buf;
2063         char *s, *p, *dup, *pool, *vdev, *flagstr;
2064         int i, error, zio_flags;
2065
2066         dup = strdup(thing);
2067         s = strtok(dup, ":");
2068         pool = s ? s : "";
2069         s = strtok(NULL, ":");
2070         vdev = s ? s : "";
2071         s = strtok(NULL, ":");
2072         offset = strtoull(s ? s : "", NULL, 16);
2073         s = strtok(NULL, ":");
2074         size = strtoull(s ? s : "", NULL, 16);
2075         s = strtok(NULL, ":");
2076         flagstr = s ? s : "";
2077
2078         s = NULL;
2079         if (size == 0)
2080                 s = "size must not be zero";
2081         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2082                 s = "size must be a multiple of sector size";
2083         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2084                 s = "offset must be a multiple of sector size";
2085         if (s) {
2086                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2087                 free(dup);
2088                 return;
2089         }
2090
2091         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2092                 for (i = 0; flagstr[i]; i++) {
2093                         int bit = flagbits[(uchar_t)flagstr[i]];
2094
2095                         if (bit == 0) {
2096                                 (void) printf("***Invalid flag: %c\n",
2097                                     flagstr[i]);
2098                                 continue;
2099                         }
2100                         flags |= bit;
2101
2102                         /* If it's not something with an argument, keep going */
2103                         if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS |
2104                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2105                                 continue;
2106
2107                         p = &flagstr[i + 1];
2108                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2109                                 blkptr_offset = strtoull(p, &p, 16);
2110                         if (*p != ':' && *p != '\0') {
2111                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2112                                 free(dup);
2113                                 return;
2114                         }
2115                 }
2116         }
2117
2118         if (spa == NULL || strcmp(spa_name(spa), pool) != 0) {
2119                 if (spa)
2120                         spa_close(spa, (void *)zdb_read_block);
2121                 error = spa_open(pool, spap, (void *)zdb_read_block);
2122                 if (error)
2123                         fatal("Failed to open pool '%s': %s",
2124                             pool, strerror(error));
2125                 spa = *spap;
2126         }
2127
2128         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2129         if (vd == NULL) {
2130                 (void) printf("***Invalid vdev: %s\n", vdev);
2131                 free(dup);
2132                 return;
2133         } else {
2134                 if (vd->vdev_path)
2135                         (void) printf("Found vdev: %s\n", vd->vdev_path);
2136                 else
2137                         (void) printf("Found vdev type: %s\n",
2138                             vd->vdev_ops->vdev_op_type);
2139         }
2140
2141         buf = umem_alloc(size, UMEM_NOFAIL);
2142
2143         zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2144             ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY;
2145
2146         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2147         zio = zio_root(spa, NULL, NULL, 0);
2148         /* XXX todo - cons up a BP so RAID-Z will be happy */
2149         zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size,
2150             ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL));
2151         error = zio_wait(zio);
2152         spa_config_exit(spa, SCL_STATE, FTAG);
2153
2154         if (error) {
2155                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2156                 goto out;
2157         }
2158
2159         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2160                 zdb_print_blkptr((blkptr_t *)(void *)
2161                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2162         else if (flags & ZDB_FLAG_RAW)
2163                 zdb_dump_block_raw(buf, size, flags);
2164         else if (flags & ZDB_FLAG_INDIRECT)
2165                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2166                     flags);
2167         else if (flags & ZDB_FLAG_GBH)
2168                 zdb_dump_gbh(buf, flags);
2169         else
2170                 zdb_dump_block(thing, buf, size, flags);
2171
2172 out:
2173         umem_free(buf, size);
2174         free(dup);
2175 }
2176
2177 static boolean_t
2178 nvlist_string_match(nvlist_t *config, char *name, char *tgt)
2179 {
2180         char *s;
2181
2182         if (nvlist_lookup_string(config, name, &s) != 0)
2183                 return (B_FALSE);
2184
2185         return (strcmp(s, tgt) == 0);
2186 }
2187
2188 static boolean_t
2189 nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt)
2190 {
2191         uint64_t val;
2192
2193         if (nvlist_lookup_uint64(config, name, &val) != 0)
2194                 return (B_FALSE);
2195
2196         return (val == tgt);
2197 }
2198
2199 static boolean_t
2200 vdev_child_guid_match(nvlist_t *vdev, uint64_t guid)
2201 {
2202         nvlist_t **child;
2203         uint_t c, children;
2204
2205         verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2206             &child, &children) == 0);
2207         for (c = 0; c < children; ++c)
2208                 if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid))
2209                         return (B_TRUE);
2210         return (B_FALSE);
2211 }
2212
2213 static boolean_t
2214 vdev_child_string_match(nvlist_t *vdev, char *tgt)
2215 {
2216         nvlist_t **child;
2217         uint_t c, children;
2218
2219         verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2220             &child, &children) == 0);
2221         for (c = 0; c < children; ++c) {
2222                 if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) ||
2223                     nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt))
2224                         return (B_TRUE);
2225         }
2226         return (B_FALSE);
2227 }
2228
2229 static boolean_t
2230 vdev_guid_match(nvlist_t *config, uint64_t guid)
2231 {
2232         nvlist_t *nvroot;
2233
2234         verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2235             &nvroot) == 0);
2236
2237         return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) ||
2238             vdev_child_guid_match(nvroot, guid));
2239 }
2240
2241 static boolean_t
2242 vdev_string_match(nvlist_t *config, char *tgt)
2243 {
2244         nvlist_t *nvroot;
2245
2246         verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2247             &nvroot) == 0);
2248
2249         return (vdev_child_string_match(nvroot, tgt));
2250 }
2251
2252 static boolean_t
2253 pool_match(nvlist_t *config, char *tgt)
2254 {
2255         uint64_t guid = strtoull(tgt, NULL, 0);
2256
2257         if (guid != 0) {
2258                 return (
2259                     nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) ||
2260                     vdev_guid_match(config, guid));
2261         } else {
2262                 return (
2263                     nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) ||
2264                     vdev_string_match(config, tgt));
2265         }
2266 }
2267
2268 static int
2269 find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir)
2270 {
2271         nvlist_t *pools;
2272         int error = ENOENT;
2273         nvlist_t *match = NULL;
2274
2275         if (vdev_dir != NULL)
2276                 pools = zpool_find_import_activeok(g_zfs, 1, &vdev_dir);
2277         else
2278                 pools = zpool_find_import_activeok(g_zfs, 0, NULL);
2279
2280         if (pools != NULL) {
2281                 nvpair_t *elem = NULL;
2282
2283                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2284                         verify(nvpair_value_nvlist(elem, configp) == 0);
2285                         if (pool_match(*configp, pool_id)) {
2286                                 if (match != NULL) {
2287                                         (void) fatal(
2288                                             "More than one matching pool - "
2289                                             "specify guid/devid/device path.");
2290                                 } else {
2291                                         match = *configp;
2292                                         error = 0;
2293                                 }
2294                         }
2295                 }
2296         }
2297
2298         *configp = error ? NULL : match;
2299
2300         return (error);
2301 }
2302
2303 int
2304 main(int argc, char **argv)
2305 {
2306         int i, c;
2307         struct rlimit rl = { 1024, 1024 };
2308         spa_t *spa;
2309         objset_t *os = NULL;
2310         char *endstr;
2311         int dump_all = 1;
2312         int verbose = 0;
2313         int error;
2314         int exported = 0;
2315         char *vdev_dir = NULL;
2316
2317         (void) setrlimit(RLIMIT_NOFILE, &rl);
2318         (void) enable_extended_FILE_stdio(-1, -1);
2319
2320         dprintf_setup(&argc, argv);
2321
2322         while ((c = getopt(argc, argv, "udibcmsvCLS:U:lRep:t:")) != -1) {
2323                 switch (c) {
2324                 case 'u':
2325                 case 'd':
2326                 case 'i':
2327                 case 'b':
2328                 case 'c':
2329                 case 'm':
2330                 case 's':
2331                 case 'C':
2332                 case 'l':
2333                 case 'R':
2334                         dump_opt[c]++;
2335                         dump_all = 0;
2336                         break;
2337                 case 'L':
2338                         dump_opt[c]++;
2339                         break;
2340                 case 'v':
2341                         verbose++;
2342                         break;
2343                 case 'U':
2344                         spa_config_path = optarg;
2345                         break;
2346                 case 'e':
2347                         exported = 1;
2348                         break;
2349                 case 'p':
2350                         vdev_dir = optarg;
2351                         break;
2352                 case 'S':
2353                         dump_opt[c]++;
2354                         dump_all = 0;
2355                         zdb_sig_user_data = (strncmp(optarg, "user:", 5) == 0);
2356                         if (!zdb_sig_user_data && strncmp(optarg, "all:", 4))
2357                                 usage();
2358                         endstr = strchr(optarg, ':') + 1;
2359                         if (strcmp(endstr, "fletcher2") == 0)
2360                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2361                         else if (strcmp(endstr, "fletcher4") == 0)
2362                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_4;
2363                         else if (strcmp(endstr, "sha256") == 0)
2364                                 zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
2365                         else if (strcmp(endstr, "all") == 0)
2366                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2367                         else
2368                                 usage();
2369                         break;
2370                 case 't':
2371                         ub_max_txg = strtoull(optarg, NULL, 0);
2372                         if (ub_max_txg < TXG_INITIAL) {
2373                                 (void) fprintf(stderr, "incorrect txg "
2374                                     "specified: %s\n", optarg);
2375                                 usage();
2376                         }
2377                         break;
2378                 default:
2379                         usage();
2380                         break;
2381                 }
2382         }
2383
2384         if (vdev_dir != NULL && exported == 0) {
2385                 (void) fprintf(stderr, "-p option requires use of -e\n");
2386                 usage();
2387         }
2388
2389         kernel_init(FREAD);
2390         g_zfs = libzfs_init();
2391         ASSERT(g_zfs != NULL);
2392
2393         for (c = 0; c < 256; c++) {
2394                 if (dump_all && c != 'l' && c != 'R')
2395                         dump_opt[c] = 1;
2396                 if (dump_opt[c])
2397                         dump_opt[c] += verbose;
2398         }
2399
2400         argc -= optind;
2401         argv += optind;
2402
2403         if (argc < 1) {
2404                 if (dump_opt['C']) {
2405                         dump_cachefile(spa_config_path);
2406                         return (0);
2407                 }
2408                 usage();
2409         }
2410
2411         if (dump_opt['l']) {
2412                 dump_label(argv[0]);
2413                 return (0);
2414         }
2415
2416         if (dump_opt['R']) {
2417                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
2418                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
2419                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
2420                 flagbits['e'] = ZDB_FLAG_BSWAP;
2421                 flagbits['g'] = ZDB_FLAG_GBH;
2422                 flagbits['i'] = ZDB_FLAG_INDIRECT;
2423                 flagbits['p'] = ZDB_FLAG_PHYS;
2424                 flagbits['r'] = ZDB_FLAG_RAW;
2425
2426                 spa = NULL;
2427                 while (argv[0]) {
2428                         zdb_read_block(argv[0], &spa);
2429                         argv++;
2430                         argc--;
2431                 }
2432                 if (spa)
2433                         spa_close(spa, (void *)zdb_read_block);
2434                 return (0);
2435         }
2436
2437         if (dump_opt['C'])
2438                 dump_config(argv[0]);
2439
2440         error = 0;
2441         if (exported) {
2442                 /*
2443                  * Check to see if the name refers to an exported zpool
2444                  */
2445                 char *slash;
2446                 nvlist_t *exported_conf = NULL;
2447
2448                 if ((slash = strchr(argv[0], '/')) != NULL)
2449                         *slash = '\0';
2450
2451                 error = find_exported_zpool(argv[0], &exported_conf, vdev_dir);
2452                 if (error == 0) {
2453                         nvlist_t *nvl = NULL;
2454
2455                         if (vdev_dir != NULL) {
2456                                 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
2457                                         error = ENOMEM;
2458                                 else if (nvlist_add_string(nvl,
2459                                     zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
2460                                     vdev_dir) != 0)
2461                                         error = ENOMEM;
2462                         }
2463
2464                         if (error == 0)
2465                                 error = spa_import_verbatim(argv[0],
2466                                     exported_conf, nvl);
2467
2468                         nvlist_free(nvl);
2469                 }
2470
2471                 if (slash != NULL)
2472                         *slash = '/';
2473         }
2474
2475         if (error == 0) {
2476                 if (strchr(argv[0], '/') != NULL) {
2477                         error = dmu_objset_open(argv[0], DMU_OST_ANY,
2478                             DS_MODE_USER | DS_MODE_READONLY, &os);
2479                 } else {
2480                         error = spa_open(argv[0], &spa, FTAG);
2481                 }
2482         }
2483
2484         if (error)
2485                 fatal("can't open %s: %s", argv[0], strerror(error));
2486
2487         argv++;
2488         if (--argc > 0) {
2489                 zopt_objects = argc;
2490                 zopt_object = calloc(zopt_objects, sizeof (uint64_t));
2491                 for (i = 0; i < zopt_objects; i++) {
2492                         errno = 0;
2493                         zopt_object[i] = strtoull(argv[i], NULL, 0);
2494                         if (zopt_object[i] == 0 && errno != 0)
2495                                 fatal("bad object number %s: %s",
2496                                     argv[i], strerror(errno));
2497                 }
2498         }
2499
2500         if (os != NULL) {
2501                 dump_dir(os);
2502                 dmu_objset_close(os);
2503         } else {
2504                 dump_zpool(spa);
2505                 spa_close(spa, FTAG);
2506         }
2507
2508         fuid_table_destroy();
2509
2510         libzfs_fini(g_zfs);
2511         kernel_fini();
2512
2513         return (0);
2514 }