cddl/contrib/opensolaris/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         vdev_t *vd = msp->ms_group->mg_vd;
 495         spa_t *spa = vd->vdev_spa;
 496         space_map_t *sm = &msp->ms_map;
 497         space_map_obj_t *smo = &msp->ms_smo;
 498         char freebuf[5];
 499
 500         nicenum(sm->sm_size - smo->smo_alloc, freebuf);
 501
 502         (void) printf(
 503             "\tvdev %5llu   offset %12llx   spacemap %6llu   free    %5s\n",
 504             (u_longlong_t)(sm->sm_start / sm->sm_size),
 505             (u_longlong_t)sm->sm_start, (u_longlong_t)smo->smo_object, freebuf);
 506
 507         if (dump_opt['m'] > 1) {
 508                 mutex_enter(&msp->ms_lock);
 509                 space_map_load_wait(sm);
 510                 if (!sm->sm_loaded)
 511                         VERIFY(space_map_load(sm, zfs_metaslab_ops,
 512                             SM_FREE, smo, spa->spa_meta_objset) == 0);
 513                 dump_metaslab_stats(msp);
 514                 space_map_unload(sm);
 515                 mutex_exit(&msp->ms_lock);
 516         }
 517
 518         if (dump_opt['d'] > 5 || dump_opt['m'] > 2) {
 519                 ASSERT(sm->sm_size == (1ULL << vd->vdev_ms_shift));
 520
 521                 mutex_enter(&msp->ms_lock);
 522                 dump_spacemap(spa->spa_meta_objset, smo, sm);
 523                 mutex_exit(&msp->ms_lock);
 524         }
 525 }
 526
 527 static void
 528 dump_metaslabs(spa_t *spa)
 529 {
 530         vdev_t *rvd = spa->spa_root_vdev;
 531         vdev_t *vd;
 532         int c, m;
 533
 534         (void) printf("\nMetaslabs:\n");
 535
 536         for (c = 0; c < rvd->vdev_children; c++) {
 537                 vd = rvd->vdev_child[c];
 538
 539                 (void) printf("\t%-10s   %-19s   %-15s   %-10s\n",
 540                     "vdev", "offset", "spacemap", "free");
 541                 (void) printf("\t%10s   %19s   %15s   %10s\n",
 542                     "----------", "-------------------",
 543                     "---------------", "-------------");
 544
 545                 for (m = 0; m < vd->vdev_ms_count; m++)
 546                         dump_metaslab(vd->vdev_ms[m]);
 547                 (void) printf("\n");
 548         }
 549 }
 550
 551 static void
 552 dump_dtl_seg(space_map_t *sm, uint64_t start, uint64_t size)
 553 {
 554         char *prefix = (void *)sm;
 555
 556         (void) printf("%s [%llu,%llu) length %llu\n",
 557             prefix,
 558             (u_longlong_t)start,
 559             (u_longlong_t)(start + size),
 560             (u_longlong_t)(size));
 561 }
 562
 563 static void
 564 dump_dtl(vdev_t *vd, int indent)
 565 {
 566         spa_t *spa = vd->vdev_spa;
 567         boolean_t required;
 568         char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
 569         char prefix[256];
 570
 571         spa_vdev_state_enter(spa);
 572         required = vdev_dtl_required(vd);
 573         (void) spa_vdev_state_exit(spa, NULL, 0);
 574
 575         if (indent == 0)
 576                 (void) printf("\nDirty time logs:\n\n");
 577
 578         (void) printf("\t%*s%s [%s]\n", indent, "",
 579             vd->vdev_path ? vd->vdev_path :
 580             vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
 581             required ? "DTL-required" : "DTL-expendable");
 582
 583         for (int t = 0; t < DTL_TYPES; t++) {
 584                 space_map_t *sm = &vd->vdev_dtl[t];
 585                 if (sm->sm_space == 0)
 586                         continue;
 587                 (void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
 588                     indent + 2, "", name[t]);
 589                 mutex_enter(sm->sm_lock);
 590                 space_map_walk(sm, dump_dtl_seg, (void *)prefix);
 591                 mutex_exit(sm->sm_lock);
 592                 if (dump_opt['d'] > 5 && vd->vdev_children == 0)
 593                         dump_spacemap(spa->spa_meta_objset,
 594                             &vd->vdev_dtl_smo, sm);
 595         }
 596
 597         for (int c = 0; c < vd->vdev_children; c++)
 598                 dump_dtl(vd->vdev_child[c], indent + 4);
 599 }
 600
 601 /*ARGSUSED*/
 602 static void
 603 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 604 {
 605 }
 606
 607 static uint64_t
 608 blkid2offset(const dnode_phys_t *dnp, int level, uint64_t blkid)
 609 {
 610         if (level < 0)
 611                 return (blkid);
 612
 613         return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 614             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 615 }
 616
 617 static void
 618 sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas)
 619 {
 620         dva_t *dva = bp->blk_dva;
 621         int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1;
 622         int i;
 623
 624         blkbuf[0] = '\0';
 625
 626         for (i = 0; i < ndvas; i++)
 627                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 628                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 629                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 630                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 631
 632         (void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu",
 633             (u_longlong_t)BP_GET_LSIZE(bp),
 634             (u_longlong_t)BP_GET_PSIZE(bp),
 635             (u_longlong_t)bp->blk_fill,
 636             (u_longlong_t)bp->blk_birth);
 637 }
 638
 639 static void
 640 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
 641     const dnode_phys_t *dnp)
 642 {
 643         char blkbuf[BP_SPRINTF_LEN];
 644         int l;
 645
 646         ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 647         ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 648
 649         (void) printf("%16llx ",
 650             (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid));
 651
 652         ASSERT(zb->zb_level >= 0);
 653
 654         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 655                 if (l == zb->zb_level) {
 656                         (void) printf("L%llx", (u_longlong_t)zb->zb_level);
 657                 } else {
 658                         (void) printf(" ");
 659                 }
 660         }
 661
 662         sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
 663         (void) printf("%s\n", blkbuf);
 664 }
 665
 666 #define SET_BOOKMARK(zb, objset, object, level, blkid)  \
 667 {                                                       \
 668         (zb)->zb_objset = objset;                       \
 669         (zb)->zb_object = object;                       \
 670         (zb)->zb_level = level;                         \
 671         (zb)->zb_blkid = blkid;                         \
 672 }
 673
 674 static int
 675 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
 676     blkptr_t *bp, const zbookmark_t *zb)
 677 {
 678         int err;
 679
 680         if (bp->blk_birth == 0)
 681                 return (0);
 682
 683         print_indirect(bp, zb, dnp);
 684
 685         if (BP_GET_LEVEL(bp) > 0) {
 686                 uint32_t flags = ARC_WAIT;
 687                 int i;
 688                 blkptr_t *cbp;
 689                 int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
 690                 arc_buf_t *buf;
 691                 uint64_t fill = 0;
 692
 693                 err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
 694                     ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
 695                 if (err)
 696                         return (err);
 697
 698                 /* recursively visit blocks below this */
 699                 cbp = buf->b_data;
 700                 for (i = 0; i < epb; i++, cbp++) {
 701                         zbookmark_t czb;
 702
 703                         SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
 704                             zb->zb_level - 1,
 705                             zb->zb_blkid * epb + i);
 706                         err = visit_indirect(spa, dnp, cbp, &czb);
 707                         if (err)
 708                                 break;
 709                         fill += cbp->blk_fill;
 710                 }
 711                 if (!err)
 712                         ASSERT3U(fill, ==, bp->blk_fill);
 713                 (void) arc_buf_remove_ref(buf, &buf);
 714         }
 715
 716         return (err);
 717 }
 718
 719 /*ARGSUSED*/
 720 static void
 721 dump_indirect(dnode_t *dn)
 722 {
 723         dnode_phys_t *dnp = dn->dn_phys;
 724         int j;
 725         zbookmark_t czb;
 726
 727         (void) printf("Indirect blocks:\n");
 728
 729         SET_BOOKMARK(&czb, dmu_objset_id(&dn->dn_objset->os),
 730             dn->dn_object, dnp->dn_nlevels - 1, 0);
 731         for (j = 0; j < dnp->dn_nblkptr; j++) {
 732                 czb.zb_blkid = j;
 733                 (void) visit_indirect(dmu_objset_spa(&dn->dn_objset->os), dnp,
 734                     &dnp->dn_blkptr[j], &czb);
 735         }
 736
 737         (void) printf("\n");
 738 }
 739
 740 /*ARGSUSED*/
 741 static void
 742 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
 743 {
 744         dsl_dir_phys_t *dd = data;
 745         time_t crtime;
 746         char nice[6];
 747
 748         if (dd == NULL)
 749                 return;
 750
 751         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
 752
 753         crtime = dd->dd_creation_time;
 754         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
 755         (void) printf("\t\thead_dataset_obj = %llu\n",
 756             (u_longlong_t)dd->dd_head_dataset_obj);
 757         (void) printf("\t\tparent_dir_obj = %llu\n",
 758             (u_longlong_t)dd->dd_parent_obj);
 759         (void) printf("\t\torigin_obj = %llu\n",
 760             (u_longlong_t)dd->dd_origin_obj);
 761         (void) printf("\t\tchild_dir_zapobj = %llu\n",
 762             (u_longlong_t)dd->dd_child_dir_zapobj);
 763         nicenum(dd->dd_used_bytes, nice);
 764         (void) printf("\t\tused_bytes = %s\n", nice);
 765         nicenum(dd->dd_compressed_bytes, nice);
 766         (void) printf("\t\tcompressed_bytes = %s\n", nice);
 767         nicenum(dd->dd_uncompressed_bytes, nice);
 768         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
 769         nicenum(dd->dd_quota, nice);
 770         (void) printf("\t\tquota = %s\n", nice);
 771         nicenum(dd->dd_reserved, nice);
 772         (void) printf("\t\treserved = %s\n", nice);
 773         (void) printf("\t\tprops_zapobj = %llu\n",
 774             (u_longlong_t)dd->dd_props_zapobj);
 775         (void) printf("\t\tdeleg_zapobj = %llu\n",
 776             (u_longlong_t)dd->dd_deleg_zapobj);
 777         (void) printf("\t\tflags = %llx\n",
 778             (u_longlong_t)dd->dd_flags);
 779
 780 #define DO(which) \
 781         nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
 782         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
 783         DO(HEAD);
 784         DO(SNAP);
 785         DO(CHILD);
 786         DO(CHILD_RSRV);
 787         DO(REFRSRV);
 788 #undef DO
 789 }
 790
 791 /*ARGSUSED*/
 792 static void
 793 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
 794 {
 795         dsl_dataset_phys_t *ds = data;
 796         time_t crtime;
 797         char used[6], compressed[6], uncompressed[6], unique[6];
 798         char blkbuf[BP_SPRINTF_LEN];
 799
 800         if (ds == NULL)
 801                 return;
 802
 803         ASSERT(size == sizeof (*ds));
 804         crtime = ds->ds_creation_time;
 805         nicenum(ds->ds_used_bytes, used);
 806         nicenum(ds->ds_compressed_bytes, compressed);
 807         nicenum(ds->ds_uncompressed_bytes, uncompressed);
 808         nicenum(ds->ds_unique_bytes, unique);
 809         sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp);
 810
 811         (void) printf("\t\tdir_obj = %llu\n",
 812             (u_longlong_t)ds->ds_dir_obj);
 813         (void) printf("\t\tprev_snap_obj = %llu\n",
 814             (u_longlong_t)ds->ds_prev_snap_obj);
 815         (void) printf("\t\tprev_snap_txg = %llu\n",
 816             (u_longlong_t)ds->ds_prev_snap_txg);
 817         (void) printf("\t\tnext_snap_obj = %llu\n",
 818             (u_longlong_t)ds->ds_next_snap_obj);
 819         (void) printf("\t\tsnapnames_zapobj = %llu\n",
 820             (u_longlong_t)ds->ds_snapnames_zapobj);
 821         (void) printf("\t\tnum_children = %llu\n",
 822             (u_longlong_t)ds->ds_num_children);
 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 };
1055
1056 static void
1057 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1058 {
1059         dmu_buf_t *db = NULL;
1060         dmu_object_info_t doi;
1061         dnode_t *dn;
1062         void *bonus = NULL;
1063         size_t bsize = 0;
1064         char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6];
1065         char aux[50];
1066         int error;
1067
1068         if (*print_header) {
1069                 (void) printf("\n    Object  lvl   iblk   dblk  lsize"
1070                     "  asize  type\n");
1071                 *print_header = 0;
1072         }
1073
1074         if (object == 0) {
1075                 dn = os->os->os_meta_dnode;
1076         } else {
1077                 error = dmu_bonus_hold(os, object, FTAG, &db);
1078                 if (error)
1079                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1080                             object, error);
1081                 bonus = db->db_data;
1082                 bsize = db->db_size;
1083                 dn = ((dmu_buf_impl_t *)db)->db_dnode;
1084         }
1085         dmu_object_info_from_dnode(dn, &doi);
1086
1087         nicenum(doi.doi_metadata_block_size, iblk);
1088         nicenum(doi.doi_data_block_size, dblk);
1089         nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1),
1090             lsize);
1091         nicenum(doi.doi_physical_blks << 9, asize);
1092         nicenum(doi.doi_bonus_size, bonus_size);
1093
1094         aux[0] = '\0';
1095
1096         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1097                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1098                     zio_checksum_table[doi.doi_checksum].ci_name);
1099         }
1100
1101         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1102                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1103                     zio_compress_table[doi.doi_compress].ci_name);
1104         }
1105
1106         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %s%s\n",
1107             (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize,
1108             asize, dmu_ot[doi.doi_type].ot_name, aux);
1109
1110         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1111                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %s\n",
1112                     "", "", "", "", bonus_size, "bonus",
1113                     dmu_ot[doi.doi_bonus_type].ot_name);
1114         }
1115
1116         if (verbosity >= 4) {
1117                 (void) printf("\tdnode flags: %s%s\n",
1118                     (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1119                     "USED_BYTES " : "",
1120                     (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1121                     "USERUSED_ACCOUNTED " : "");
1122                 (void) printf("\tdnode maxblkid: %llu\n",
1123                     (longlong_t)dn->dn_phys->dn_maxblkid);
1124
1125                 object_viewer[doi.doi_bonus_type](os, object, bonus, bsize);
1126                 object_viewer[doi.doi_type](os, object, NULL, 0);
1127                 *print_header = 1;
1128         }
1129
1130         if (verbosity >= 5)
1131                 dump_indirect(dn);
1132
1133         if (verbosity >= 5) {
1134                 /*
1135                  * Report the list of segments that comprise the object.
1136                  */
1137                 uint64_t start = 0;
1138                 uint64_t end;
1139                 uint64_t blkfill = 1;
1140                 int minlvl = 1;
1141
1142                 if (dn->dn_type == DMU_OT_DNODE) {
1143                         minlvl = 0;
1144                         blkfill = DNODES_PER_BLOCK;
1145                 }
1146
1147                 for (;;) {
1148                         error = dnode_next_offset(dn,
1149                             0, &start, minlvl, blkfill, 0);
1150                         if (error)
1151                                 break;
1152                         end = start;
1153                         error = dnode_next_offset(dn,
1154                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1155                         nicenum(end - start, segsize);
1156                         (void) printf("\t\tsegment [%016llx, %016llx)"
1157                             " size %5s\n", (u_longlong_t)start,
1158                             (u_longlong_t)end, segsize);
1159                         if (error)
1160                                 break;
1161                         start = end;
1162                 }
1163         }
1164
1165         if (db != NULL)
1166                 dmu_buf_rele(db, FTAG);
1167 }
1168
1169 static char *objset_types[DMU_OST_NUMTYPES] = {
1170         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1171
1172 static void
1173 dump_dir(objset_t *os)
1174 {
1175         dmu_objset_stats_t dds;
1176         uint64_t object, object_count;
1177         uint64_t refdbytes, usedobjs, scratch;
1178         char numbuf[8];
1179         char blkbuf[BP_SPRINTF_LEN + 20];
1180         char osname[MAXNAMELEN];
1181         char *type = "UNKNOWN";
1182         int verbosity = dump_opt['d'];
1183         int print_header = 1;
1184         int i, error;
1185
1186         dmu_objset_fast_stat(os, &dds);
1187
1188         if (dds.dds_type < DMU_OST_NUMTYPES)
1189                 type = objset_types[dds.dds_type];
1190
1191         if (dds.dds_type == DMU_OST_META) {
1192                 dds.dds_creation_txg = TXG_INITIAL;
1193                 usedobjs = os->os->os_rootbp->blk_fill;
1194                 refdbytes = os->os->os_spa->spa_dsl_pool->
1195                     dp_mos_dir->dd_phys->dd_used_bytes;
1196         } else {
1197                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1198         }
1199
1200         ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill);
1201
1202         nicenum(refdbytes, numbuf);
1203
1204         if (verbosity >= 4) {
1205                 (void) sprintf(blkbuf + strlen(blkbuf), ", rootbp ");
1206                 (void) sprintf_blkptr(blkbuf + strlen(blkbuf),
1207                     BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp);
1208         } else {
1209                 blkbuf[0] = '\0';
1210         }
1211
1212         dmu_objset_name(os, osname);
1213
1214         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1215             "%s, %llu objects%s\n",
1216             osname, type, (u_longlong_t)dmu_objset_id(os),
1217             (u_longlong_t)dds.dds_creation_txg,
1218             numbuf, (u_longlong_t)usedobjs, blkbuf);
1219
1220         dump_intent_log(dmu_objset_zil(os));
1221
1222         if (dmu_objset_ds(os) != NULL)
1223                 dump_bplist(dmu_objset_pool(os)->dp_meta_objset,
1224                     dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist");
1225
1226         if (verbosity < 2)
1227                 return;
1228
1229         if (os->os->os_rootbp->blk_birth == 0)
1230                 return;
1231
1232         if (zopt_objects != 0) {
1233                 for (i = 0; i < zopt_objects; i++)
1234                         dump_object(os, zopt_object[i], verbosity,
1235                             &print_header);
1236                 (void) printf("\n");
1237                 return;
1238         }
1239
1240         dump_object(os, 0, verbosity, &print_header);
1241         object_count = 0;
1242         if (os->os->os_userused_dnode &&
1243             os->os->os_userused_dnode->dn_type != 0) {
1244                 dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1245                 dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1246         }
1247
1248         object = 0;
1249         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1250                 dump_object(os, object, verbosity, &print_header);
1251                 object_count++;
1252         }
1253
1254         ASSERT3U(object_count, ==, usedobjs);
1255
1256         (void) printf("\n");
1257
1258         if (error != ESRCH) {
1259                 (void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1260                 abort();
1261         }
1262 }
1263
1264 static void
1265 dump_uberblock(uberblock_t *ub)
1266 {
1267         time_t timestamp = ub->ub_timestamp;
1268
1269         (void) printf("Uberblock\n\n");
1270         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1271         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1272         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1273         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1274         (void) printf("\ttimestamp = %llu UTC = %s",
1275             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1276         if (dump_opt['u'] >= 3) {
1277                 char blkbuf[BP_SPRINTF_LEN];
1278                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp);
1279                 (void) printf("\trootbp = %s\n", blkbuf);
1280         }
1281         (void) printf("\n");
1282 }
1283
1284 static void
1285 dump_config(const char *pool)
1286 {
1287         spa_t *spa = NULL;
1288
1289         mutex_enter(&spa_namespace_lock);
1290         while ((spa = spa_next(spa)) != NULL) {
1291                 if (pool == NULL)
1292                         (void) printf("%s\n", spa_name(spa));
1293                 if (pool == NULL || strcmp(pool, spa_name(spa)) == 0)
1294                         dump_nvlist(spa->spa_config, 4);
1295         }
1296         mutex_exit(&spa_namespace_lock);
1297 }
1298
1299 static void
1300 dump_cachefile(const char *cachefile)
1301 {
1302         int fd;
1303         struct stat64 statbuf;
1304         char *buf;
1305         nvlist_t *config;
1306
1307         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1308                 (void) printf("cannot open '%s': %s\n", cachefile,
1309                     strerror(errno));
1310                 exit(1);
1311         }
1312
1313         if (fstat64(fd, &statbuf) != 0) {
1314                 (void) printf("failed to stat '%s': %s\n", cachefile,
1315                     strerror(errno));
1316                 exit(1);
1317         }
1318
1319         if ((buf = malloc(statbuf.st_size)) == NULL) {
1320                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1321                     (u_longlong_t)statbuf.st_size);
1322                 exit(1);
1323         }
1324
1325         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1326                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1327                     (u_longlong_t)statbuf.st_size);
1328                 exit(1);
1329         }
1330
1331         (void) close(fd);
1332
1333         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1334                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1335                 exit(1);
1336         }
1337
1338         free(buf);
1339
1340         dump_nvlist(config, 0);
1341
1342         nvlist_free(config);
1343 }
1344
1345 static void
1346 dump_label(const char *dev)
1347 {
1348         int fd;
1349         vdev_label_t label;
1350         char *buf = label.vl_vdev_phys.vp_nvlist;
1351         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1352         struct stat64 statbuf;
1353         uint64_t psize;
1354         int l;
1355
1356         if ((fd = open64(dev, O_RDONLY)) < 0) {
1357                 (void) printf("cannot open '%s': %s\n", dev, strerror(errno));
1358                 exit(1);
1359         }
1360
1361         if (fstat64(fd, &statbuf) != 0) {
1362                 (void) printf("failed to stat '%s': %s\n", dev,
1363                     strerror(errno));
1364                 exit(1);
1365         }
1366
1367         if (S_ISCHR(statbuf.st_mode)) {
1368                 if (ioctl(fd, DIOCGMEDIASIZE, &statbuf.st_size) == -1) {
1369                         (void) printf("failed to get size of '%s': %s\n", dev,
1370                             strerror(errno));
1371                         exit(1);
1372                 }
1373         }
1374
1375         psize = statbuf.st_size;
1376         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1377
1378         for (l = 0; l < VDEV_LABELS; l++) {
1379
1380                 nvlist_t *config = NULL;
1381
1382                 (void) printf("--------------------------------------------\n");
1383                 (void) printf("LABEL %d\n", l);
1384                 (void) printf("--------------------------------------------\n");
1385
1386                 if (pread64(fd, &label, sizeof (label),
1387                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1388                         (void) printf("failed to read label %d\n", l);
1389                         continue;
1390                 }
1391
1392                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1393                         (void) printf("failed to unpack label %d\n", l);
1394                         continue;
1395                 }
1396                 dump_nvlist(config, 4);
1397                 nvlist_free(config);
1398         }
1399 }
1400
1401 /*ARGSUSED*/
1402 static int
1403 dump_one_dir(char *dsname, void *arg)
1404 {
1405         int error;
1406         objset_t *os;
1407
1408         error = dmu_objset_open(dsname, DMU_OST_ANY,
1409             DS_MODE_USER | DS_MODE_READONLY, &os);
1410         if (error) {
1411                 (void) printf("Could not open %s\n", dsname);
1412                 return (0);
1413         }
1414         dump_dir(os);
1415         dmu_objset_close(os);
1416         fuid_table_destroy();
1417         return (0);
1418 }
1419
1420 static void
1421 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
1422 {
1423         vdev_t *vd = sm->sm_ppd;
1424
1425         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
1426             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
1427 }
1428
1429 /* ARGSUSED */
1430 static void
1431 zdb_space_map_load(space_map_t *sm)
1432 {
1433 }
1434
1435 static void
1436 zdb_space_map_unload(space_map_t *sm)
1437 {
1438         space_map_vacate(sm, zdb_leak, sm);
1439 }
1440
1441 /* ARGSUSED */
1442 static void
1443 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
1444 {
1445 }
1446
1447 static space_map_ops_t zdb_space_map_ops = {
1448         zdb_space_map_load,
1449         zdb_space_map_unload,
1450         NULL,   /* alloc */
1451         zdb_space_map_claim,
1452         NULL,   /* free */
1453         NULL    /* maxsize */
1454 };
1455
1456 static void
1457 zdb_leak_init(spa_t *spa)
1458 {
1459         vdev_t *rvd = spa->spa_root_vdev;
1460
1461         for (int c = 0; c < rvd->vdev_children; c++) {
1462                 vdev_t *vd = rvd->vdev_child[c];
1463                 for (int m = 0; m < vd->vdev_ms_count; m++) {
1464                         metaslab_t *msp = vd->vdev_ms[m];
1465                         mutex_enter(&msp->ms_lock);
1466                         VERIFY(space_map_load(&msp->ms_map, &zdb_space_map_ops,
1467                             SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset) == 0);
1468                         msp->ms_map.sm_ppd = vd;
1469                         mutex_exit(&msp->ms_lock);
1470                 }
1471         }
1472 }
1473
1474 static void
1475 zdb_leak_fini(spa_t *spa)
1476 {
1477         vdev_t *rvd = spa->spa_root_vdev;
1478
1479         for (int c = 0; c < rvd->vdev_children; c++) {
1480                 vdev_t *vd = rvd->vdev_child[c];
1481                 for (int m = 0; m < vd->vdev_ms_count; m++) {
1482                         metaslab_t *msp = vd->vdev_ms[m];
1483                         mutex_enter(&msp->ms_lock);
1484                         space_map_unload(&msp->ms_map);
1485                         mutex_exit(&msp->ms_lock);
1486                 }
1487         }
1488 }
1489
1490 /*
1491  * Verify that the sum of the sizes of all blocks in the pool adds up
1492  * to the SPA's sa_alloc total.
1493  */
1494 typedef struct zdb_blkstats {
1495         uint64_t        zb_asize;
1496         uint64_t        zb_lsize;
1497         uint64_t        zb_psize;
1498         uint64_t        zb_count;
1499 } zdb_blkstats_t;
1500
1501 #define DMU_OT_DEFERRED DMU_OT_NONE
1502 #define DMU_OT_TOTAL    DMU_OT_NUMTYPES
1503
1504 #define ZB_TOTAL        DN_MAX_LEVELS
1505
1506 typedef struct zdb_cb {
1507         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1];
1508         uint64_t        zcb_errors[256];
1509         int             zcb_readfails;
1510         int             zcb_haderrors;
1511 } zdb_cb_t;
1512
1513 static void
1514 zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, dmu_object_type_t type)
1515 {
1516         for (int i = 0; i < 4; i++) {
1517                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1518                 int t = (i & 1) ? type : DMU_OT_TOTAL;
1519                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1520
1521                 zb->zb_asize += BP_GET_ASIZE(bp);
1522                 zb->zb_lsize += BP_GET_LSIZE(bp);
1523                 zb->zb_psize += BP_GET_PSIZE(bp);
1524                 zb->zb_count++;
1525         }
1526
1527         if (dump_opt['S']) {
1528                 boolean_t print_sig;
1529
1530                 print_sig = !zdb_sig_user_data || (BP_GET_LEVEL(bp) == 0 &&
1531                     BP_GET_TYPE(bp) == DMU_OT_PLAIN_FILE_CONTENTS);
1532
1533                 if (BP_GET_CHECKSUM(bp) < zdb_sig_cksumalg)
1534                         print_sig = B_FALSE;
1535
1536                 if (print_sig) {
1537                         (void) printf("%llu\t%lld\t%lld\t%s\t%s\t%s\t"
1538                             "%llx:%llx:%llx:%llx\n",
1539                             (u_longlong_t)BP_GET_LEVEL(bp),
1540                             (longlong_t)BP_GET_PSIZE(bp),
1541                             (longlong_t)BP_GET_NDVAS(bp),
1542                             dmu_ot[BP_GET_TYPE(bp)].ot_name,
1543                             zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1544                             zio_compress_table[BP_GET_COMPRESS(bp)].ci_name,
1545                             (u_longlong_t)bp->blk_cksum.zc_word[0],
1546                             (u_longlong_t)bp->blk_cksum.zc_word[1],
1547                             (u_longlong_t)bp->blk_cksum.zc_word[2],
1548                             (u_longlong_t)bp->blk_cksum.zc_word[3]);
1549                 }
1550         }
1551
1552         if (!dump_opt['L'])
1553                 VERIFY(zio_wait(zio_claim(NULL, spa, spa_first_txg(spa), bp,
1554                     NULL, NULL, ZIO_FLAG_MUSTSUCCEED)) == 0);
1555 }
1556
1557 static int
1558 zdb_blkptr_cb(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb,
1559     const dnode_phys_t *dnp, void *arg)
1560 {
1561         zdb_cb_t *zcb = arg;
1562         char blkbuf[BP_SPRINTF_LEN];
1563         dmu_object_type_t type;
1564         boolean_t is_l0_metadata;
1565
1566         if (bp == NULL)
1567                 return (0);
1568
1569         type = BP_GET_TYPE(bp);
1570
1571         zdb_count_block(spa, zcb, bp, type);
1572
1573         /*
1574          * if we do metadata-only checksumming there's no need to checksum
1575          * indirect blocks here because it is done during traverse
1576          */
1577         is_l0_metadata = (BP_GET_LEVEL(bp) == 0 && type < DMU_OT_NUMTYPES &&
1578             dmu_ot[type].ot_metadata);
1579
1580         if (dump_opt['c'] > 1 || dump_opt['S'] ||
1581             (dump_opt['c'] && is_l0_metadata)) {
1582                 int ioerr, size;
1583                 void *data;
1584
1585                 size = BP_GET_LSIZE(bp);
1586                 data = malloc(size);
1587                 ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
1588                     NULL, NULL, ZIO_PRIORITY_ASYNC_READ,
1589                     ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB, zb));
1590                 free(data);
1591
1592                 /* We expect io errors on intent log */
1593                 if (ioerr && type != DMU_OT_INTENT_LOG) {
1594                         zcb->zcb_haderrors = 1;
1595                         zcb->zcb_errors[ioerr]++;
1596
1597                         if (dump_opt['b'] >= 2)
1598                                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1599                         else
1600                                 blkbuf[0] = '\0';
1601
1602                         if (!dump_opt['S']) {
1603                                 (void) printf("zdb_blkptr_cb: "
1604                                     "Got error %d reading "
1605                                     "<%llu, %llu, %lld, %llx> %s -- skipping\n",
1606                                     ioerr,
1607                                     (u_longlong_t)zb->zb_objset,
1608                                     (u_longlong_t)zb->zb_object,
1609                                     (u_longlong_t)zb->zb_level,
1610                                     (u_longlong_t)zb->zb_blkid,
1611                                     blkbuf);
1612                         }
1613                 }
1614         }
1615
1616         zcb->zcb_readfails = 0;
1617
1618         if (dump_opt['b'] >= 4) {
1619                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1620                 (void) printf("objset %llu object %llu offset 0x%llx %s\n",
1621                     (u_longlong_t)zb->zb_objset,
1622                     (u_longlong_t)zb->zb_object,
1623                     (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid),
1624                     blkbuf);
1625         }
1626
1627         return (0);
1628 }
1629
1630 static int
1631 dump_block_stats(spa_t *spa)
1632 {
1633         zdb_cb_t zcb = { 0 };
1634         zdb_blkstats_t *zb, *tzb;
1635         uint64_t alloc, space, logalloc;
1636         vdev_t *rvd = spa->spa_root_vdev;
1637         int leaks = 0;
1638         int c, e;
1639
1640         if (!dump_opt['S']) {
1641                 (void) printf("\nTraversing all blocks %s%s%s%s%s...\n",
1642                     (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
1643                     (dump_opt['c'] == 1) ? "metadata " : "",
1644                     dump_opt['c'] ? "checksums " : "",
1645                     (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
1646                     !dump_opt['L'] ? "nothing leaked " : "");
1647         }
1648
1649         /*
1650          * Load all space maps as SM_ALLOC maps, then traverse the pool
1651          * claiming each block we discover.  If the pool is perfectly
1652          * consistent, the space maps will be empty when we're done.
1653          * Anything left over is a leak; any block we can't claim (because
1654          * it's not part of any space map) is a double allocation,
1655          * reference to a freed block, or an unclaimed log block.
1656          */
1657         if (!dump_opt['L'])
1658                 zdb_leak_init(spa);
1659
1660         /*
1661          * If there's a deferred-free bplist, process that first.
1662          */
1663         if (spa->spa_sync_bplist_obj != 0) {
1664                 bplist_t *bpl = &spa->spa_sync_bplist;
1665                 blkptr_t blk;
1666                 uint64_t itor = 0;
1667
1668                 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset,
1669                     spa->spa_sync_bplist_obj));
1670
1671                 while (bplist_iterate(bpl, &itor, &blk) == 0) {
1672                         if (dump_opt['b'] >= 4) {
1673                                 char blkbuf[BP_SPRINTF_LEN];
1674                                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk);
1675                                 (void) printf("[%s] %s\n",
1676                                     "deferred free", blkbuf);
1677                         }
1678                         zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED);
1679                 }
1680
1681                 bplist_close(bpl);
1682         }
1683
1684         zcb.zcb_haderrors |= traverse_pool(spa, zdb_blkptr_cb, &zcb);
1685
1686         if (zcb.zcb_haderrors && !dump_opt['S']) {
1687                 (void) printf("\nError counts:\n\n");
1688                 (void) printf("\t%5s  %s\n", "errno", "count");
1689                 for (e = 0; e < 256; e++) {
1690                         if (zcb.zcb_errors[e] != 0) {
1691                                 (void) printf("\t%5d  %llu\n",
1692                                     e, (u_longlong_t)zcb.zcb_errors[e]);
1693                         }
1694                 }
1695         }
1696
1697         /*
1698          * Report any leaked segments.
1699          */
1700         if (!dump_opt['L'])
1701                 zdb_leak_fini(spa);
1702
1703         /*
1704          * If we're interested in printing out the blkptr signatures,
1705          * return now as we don't print out anything else (including
1706          * errors and leaks).
1707          */
1708         if (dump_opt['S'])
1709                 return (zcb.zcb_haderrors ? 3 : 0);
1710
1711         alloc = spa_get_alloc(spa);
1712         space = spa_get_space(spa);
1713
1714         /*
1715          * Log blocks allocated from a separate log device don't count
1716          * as part of the normal pool space; factor them in here.
1717          */
1718         logalloc = 0;
1719
1720         for (c = 0; c < rvd->vdev_children; c++)
1721                 if (rvd->vdev_child[c]->vdev_islog)
1722                         logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc;
1723
1724         tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL];
1725
1726         if (tzb->zb_asize == alloc + logalloc) {
1727                 if (!dump_opt['L'])
1728                         (void) printf("\n\tNo leaks (block sum matches space"
1729                             " maps exactly)\n");
1730         } else {
1731                 (void) printf("block traversal size %llu != alloc %llu "
1732                     "(%s %lld)\n",
1733                     (u_longlong_t)tzb->zb_asize,
1734                     (u_longlong_t)alloc + logalloc,
1735                     (dump_opt['L']) ? "unreachable" : "leaked",
1736                     (longlong_t)(alloc + logalloc - tzb->zb_asize));
1737                 leaks = 1;
1738         }
1739
1740         if (tzb->zb_count == 0)
1741                 return (2);
1742
1743         (void) printf("\n");
1744         (void) printf("\tbp count:      %10llu\n",
1745             (u_longlong_t)tzb->zb_count);
1746         (void) printf("\tbp logical:    %10llu\t avg: %6llu\n",
1747             (u_longlong_t)tzb->zb_lsize,
1748             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
1749         (void) printf("\tbp physical:   %10llu\t avg:"
1750             " %6llu\tcompression: %6.2f\n",
1751             (u_longlong_t)tzb->zb_psize,
1752             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
1753             (double)tzb->zb_lsize / tzb->zb_psize);
1754         (void) printf("\tbp allocated:  %10llu\t avg:"
1755             " %6llu\tcompression: %6.2f\n",
1756             (u_longlong_t)tzb->zb_asize,
1757             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
1758             (double)tzb->zb_lsize / tzb->zb_asize);
1759         (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n",
1760             (u_longlong_t)alloc, 100.0 * alloc / space);
1761
1762         if (dump_opt['b'] >= 2) {
1763                 int l, t, level;
1764                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
1765                     "\t  avg\t comp\t%%Total\tType\n");
1766
1767                 for (t = 0; t <= DMU_OT_NUMTYPES; t++) {
1768                         char csize[6], lsize[6], psize[6], asize[6], avg[6];
1769                         char *typename;
1770
1771                         typename = t == DMU_OT_DEFERRED ? "deferred free" :
1772                             t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name;
1773
1774                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
1775                                 (void) printf("%6s\t%5s\t%5s\t%5s"
1776                                     "\t%5s\t%5s\t%6s\t%s\n",
1777                                     "-",
1778                                     "-",
1779                                     "-",
1780                                     "-",
1781                                     "-",
1782                                     "-",
1783                                     "-",
1784                                     typename);
1785                                 continue;
1786                         }
1787
1788                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
1789                                 level = (l == -1 ? ZB_TOTAL : l);
1790                                 zb = &zcb.zcb_type[level][t];
1791
1792                                 if (zb->zb_asize == 0)
1793                                         continue;
1794
1795                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
1796                                         continue;
1797
1798                                 if (level == 0 && zb->zb_asize ==
1799                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
1800                                         continue;
1801
1802                                 nicenum(zb->zb_count, csize);
1803                                 nicenum(zb->zb_lsize, lsize);
1804                                 nicenum(zb->zb_psize, psize);
1805                                 nicenum(zb->zb_asize, asize);
1806                                 nicenum(zb->zb_asize / zb->zb_count, avg);
1807
1808                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
1809                                     "\t%5.2f\t%6.2f\t",
1810                                     csize, lsize, psize, asize, avg,
1811                                     (double)zb->zb_lsize / zb->zb_psize,
1812                                     100.0 * zb->zb_asize / tzb->zb_asize);
1813
1814                                 if (level == ZB_TOTAL)
1815                                         (void) printf("%s\n", typename);
1816                                 else
1817                                         (void) printf("    L%d %s\n",
1818                                             level, typename);
1819                         }
1820                 }
1821         }
1822
1823         (void) printf("\n");
1824
1825         if (leaks)
1826                 return (2);
1827
1828         if (zcb.zcb_haderrors)
1829                 return (3);
1830
1831         return (0);
1832 }
1833
1834 static void
1835 dump_zpool(spa_t *spa)
1836 {
1837         dsl_pool_t *dp = spa_get_dsl(spa);
1838         int rc = 0;
1839
1840         if (dump_opt['u'])
1841                 dump_uberblock(&spa->spa_uberblock);
1842
1843         if (dump_opt['d'] || dump_opt['i'] || dump_opt['m']) {
1844                 dump_dir(dp->dp_meta_objset);
1845                 if (dump_opt['d'] >= 3) {
1846                         dump_bplist(dp->dp_meta_objset,
1847                             spa->spa_sync_bplist_obj, "Deferred frees");
1848                         dump_dtl(spa->spa_root_vdev, 0);
1849                 }
1850
1851                 if (dump_opt['d'] >= 3 || dump_opt['m'])
1852                         dump_metaslabs(spa);
1853
1854                 (void) dmu_objset_find(spa_name(spa), dump_one_dir, NULL,
1855                     DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
1856         }
1857
1858         if (dump_opt['b'] || dump_opt['c'] || dump_opt['S'])
1859                 rc = dump_block_stats(spa);
1860
1861         if (dump_opt['s'])
1862                 show_pool_stats(spa);
1863
1864         if (rc != 0)
1865                 exit(rc);
1866 }
1867
1868 #define ZDB_FLAG_CHECKSUM       0x0001
1869 #define ZDB_FLAG_DECOMPRESS     0x0002
1870 #define ZDB_FLAG_BSWAP          0x0004
1871 #define ZDB_FLAG_GBH            0x0008
1872 #define ZDB_FLAG_INDIRECT       0x0010
1873 #define ZDB_FLAG_PHYS           0x0020
1874 #define ZDB_FLAG_RAW            0x0040
1875 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
1876
1877 int flagbits[256];
1878
1879 static void
1880 zdb_print_blkptr(blkptr_t *bp, int flags)
1881 {
1882         dva_t *dva = bp->blk_dva;
1883         int d;
1884
1885         if (flags & ZDB_FLAG_BSWAP)
1886                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
1887         /*
1888          * Super-ick warning:  This code is also duplicated in
1889          * cmd/mdb/common/modules/zfs/zfs.c .  Yeah, I hate code
1890          * replication, too.
1891          */
1892         for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1893                 (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d,
1894                     (longlong_t)DVA_GET_VDEV(&dva[d]),
1895                     (longlong_t)DVA_GET_OFFSET(&dva[d]));
1896                 (void) printf("\tDVA[%d]:       GANG: %-5s  GRID:  %04llx\t"
1897                     "ASIZE: %llx\n", d,
1898                     DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE",
1899                     (longlong_t)DVA_GET_GRID(&dva[d]),
1900                     (longlong_t)DVA_GET_ASIZE(&dva[d]));
1901                 (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d,
1902                     (u_longlong_t)DVA_GET_VDEV(&dva[d]),
1903                     (longlong_t)DVA_GET_OFFSET(&dva[d]),
1904                     (longlong_t)BP_GET_PSIZE(bp),
1905                     BP_SHOULD_BYTESWAP(bp) ? "e" : "",
1906                     !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ?
1907                     "d" : "",
1908                     DVA_GET_GANG(&dva[d]) ? "g" : "",
1909                     BP_GET_COMPRESS(bp) != 0 ? "d" : "");
1910         }
1911         (void) printf("\tLSIZE:  %-16llx\t\tPSIZE: %llx\n",
1912             (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp));
1913         (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE:  %s\n",
1914             BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG",
1915             dmu_ot[BP_GET_TYPE(bp)].ot_name);
1916         (void) printf("\tBIRTH:  %-16llx   LEVEL: %-2llu\tFILL:  %llx\n",
1917             (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp),
1918             (u_longlong_t)bp->blk_fill);
1919         (void) printf("\tCKFUNC: %-16s\t\tCOMP:  %s\n",
1920             zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1921             zio_compress_table[BP_GET_COMPRESS(bp)].ci_name);
1922         (void) printf("\tCKSUM:  %llx:%llx:%llx:%llx\n",
1923             (u_longlong_t)bp->blk_cksum.zc_word[0],
1924             (u_longlong_t)bp->blk_cksum.zc_word[1],
1925             (u_longlong_t)bp->blk_cksum.zc_word[2],
1926             (u_longlong_t)bp->blk_cksum.zc_word[3]);
1927 }
1928
1929 static void
1930 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
1931 {
1932         int i;
1933
1934         for (i = 0; i < nbps; i++)
1935                 zdb_print_blkptr(&bp[i], flags);
1936 }
1937
1938 static void
1939 zdb_dump_gbh(void *buf, int flags)
1940 {
1941         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
1942 }
1943
1944 static void
1945 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
1946 {
1947         if (flags & ZDB_FLAG_BSWAP)
1948                 byteswap_uint64_array(buf, size);
1949         (void) write(2, buf, size);
1950 }
1951
1952 static void
1953 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
1954 {
1955         uint64_t *d = (uint64_t *)buf;
1956         int nwords = size / sizeof (uint64_t);
1957         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
1958         int i, j;
1959         char *hdr, *c;
1960
1961
1962         if (do_bswap)
1963                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
1964         else
1965                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
1966
1967         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
1968
1969         for (i = 0; i < nwords; i += 2) {
1970                 (void) printf("%06llx:  %016llx  %016llx  ",
1971                     (u_longlong_t)(i * sizeof (uint64_t)),
1972                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
1973                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
1974
1975                 c = (char *)&d[i];
1976                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
1977                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
1978                 (void) printf("\n");
1979         }
1980 }
1981
1982 /*
1983  * There are two acceptable formats:
1984  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
1985  *      child[.child]*    - For example: 0.1.1
1986  *
1987  * The second form can be used to specify arbitrary vdevs anywhere
1988  * in the heirarchy.  For example, in a pool with a mirror of
1989  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
1990  */
1991 static vdev_t *
1992 zdb_vdev_lookup(vdev_t *vdev, char *path)
1993 {
1994         char *s, *p, *q;
1995         int i;
1996
1997         if (vdev == NULL)
1998                 return (NULL);
1999
2000         /* First, assume the x.x.x.x format */
2001         i = (int)strtoul(path, &s, 10);
2002         if (s == path || (s && *s != '.' && *s != '\0'))
2003                 goto name;
2004         if (i < 0 || i >= vdev->vdev_children)
2005                 return (NULL);
2006
2007         vdev = vdev->vdev_child[i];
2008         if (*s == '\0')
2009                 return (vdev);
2010         return (zdb_vdev_lookup(vdev, s+1));
2011
2012 name:
2013         for (i = 0; i < vdev->vdev_children; i++) {
2014                 vdev_t *vc = vdev->vdev_child[i];
2015
2016                 if (vc->vdev_path == NULL) {
2017                         vc = zdb_vdev_lookup(vc, path);
2018                         if (vc == NULL)
2019                                 continue;
2020                         else
2021                                 return (vc);
2022                 }
2023
2024                 p = strrchr(vc->vdev_path, '/');
2025                 p = p ? p + 1 : vc->vdev_path;
2026                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2027
2028                 if (strcmp(vc->vdev_path, path) == 0)
2029                         return (vc);
2030                 if (strcmp(p, path) == 0)
2031                         return (vc);
2032                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2033                         return (vc);
2034         }
2035
2036         return (NULL);
2037 }
2038
2039 /*
2040  * Read a block from a pool and print it out.  The syntax of the
2041  * block descriptor is:
2042  *
2043  *      pool:vdev_specifier:offset:size[:flags]
2044  *
2045  *      pool           - The name of the pool you wish to read from
2046  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2047  *      offset         - offset, in hex, in bytes
2048  *      size           - Amount of data to read, in hex, in bytes
2049  *      flags          - A string of characters specifying options
2050  *               b: Decode a blkptr at given offset within block
2051  *              *c: Calculate and display checksums
2052  *              *d: Decompress data before dumping
2053  *               e: Byteswap data before dumping
2054  *              *g: Display data as a gang block header
2055  *              *i: Display as an indirect block
2056  *               p: Do I/O to physical offset
2057  *               r: Dump raw data to stdout
2058  *
2059  *              * = not yet implemented
2060  */
2061 static void
2062 zdb_read_block(char *thing, spa_t **spap)
2063 {
2064         spa_t *spa = *spap;
2065         int flags = 0;
2066         uint64_t offset = 0, size = 0, blkptr_offset = 0;
2067         zio_t *zio;
2068         vdev_t *vd;
2069         void *buf;
2070         char *s, *p, *dup, *pool, *vdev, *flagstr;
2071         int i, error, zio_flags;
2072
2073         dup = strdup(thing);
2074         s = strtok(dup, ":");
2075         pool = s ? s : "";
2076         s = strtok(NULL, ":");
2077         vdev = s ? s : "";
2078         s = strtok(NULL, ":");
2079         offset = strtoull(s ? s : "", NULL, 16);
2080         s = strtok(NULL, ":");
2081         size = strtoull(s ? s : "", NULL, 16);
2082         s = strtok(NULL, ":");
2083         flagstr = s ? s : "";
2084
2085         s = NULL;
2086         if (size == 0)
2087                 s = "size must not be zero";
2088         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2089                 s = "size must be a multiple of sector size";
2090         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2091                 s = "offset must be a multiple of sector size";
2092         if (s) {
2093                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2094                 free(dup);
2095                 return;
2096         }
2097
2098         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2099                 for (i = 0; flagstr[i]; i++) {
2100                         int bit = flagbits[(uchar_t)flagstr[i]];
2101
2102                         if (bit == 0) {
2103                                 (void) printf("***Invalid flag: %c\n",
2104                                     flagstr[i]);
2105                                 continue;
2106                         }
2107                         flags |= bit;
2108
2109                         /* If it's not something with an argument, keep going */
2110                         if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS |
2111                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2112                                 continue;
2113
2114                         p = &flagstr[i + 1];
2115                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2116                                 blkptr_offset = strtoull(p, &p, 16);
2117                         if (*p != ':' && *p != '\0') {
2118                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2119                                 free(dup);
2120                                 return;
2121                         }
2122                 }
2123         }
2124
2125         if (spa == NULL || strcmp(spa_name(spa), pool) != 0) {
2126                 if (spa)
2127                         spa_close(spa, (void *)zdb_read_block);
2128                 error = spa_open(pool, spap, (void *)zdb_read_block);
2129                 if (error)
2130                         fatal("Failed to open pool '%s': %s",
2131                             pool, strerror(error));
2132                 spa = *spap;
2133         }
2134
2135         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2136         if (vd == NULL) {
2137                 (void) printf("***Invalid vdev: %s\n", vdev);
2138                 free(dup);
2139                 return;
2140         } else {
2141                 if (vd->vdev_path)
2142                         (void) printf("Found vdev: %s\n", vd->vdev_path);
2143                 else
2144                         (void) printf("Found vdev type: %s\n",
2145                             vd->vdev_ops->vdev_op_type);
2146         }
2147
2148         buf = umem_alloc(size, UMEM_NOFAIL);
2149
2150         zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2151             ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY;
2152
2153         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2154         zio = zio_root(spa, NULL, NULL, 0);
2155         /* XXX todo - cons up a BP so RAID-Z will be happy */
2156         zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size,
2157             ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL));
2158         error = zio_wait(zio);
2159         spa_config_exit(spa, SCL_STATE, FTAG);
2160
2161         if (error) {
2162                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2163                 goto out;
2164         }
2165
2166         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2167                 zdb_print_blkptr((blkptr_t *)(void *)
2168                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2169         else if (flags & ZDB_FLAG_RAW)
2170                 zdb_dump_block_raw(buf, size, flags);
2171         else if (flags & ZDB_FLAG_INDIRECT)
2172                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2173                     flags);
2174         else if (flags & ZDB_FLAG_GBH)
2175                 zdb_dump_gbh(buf, flags);
2176         else
2177                 zdb_dump_block(thing, buf, size, flags);
2178
2179 out:
2180         umem_free(buf, size);
2181         free(dup);
2182 }
2183
2184 static boolean_t
2185 nvlist_string_match(nvlist_t *config, char *name, char *tgt)
2186 {
2187         char *s;
2188
2189         if (nvlist_lookup_string(config, name, &s) != 0)
2190                 return (B_FALSE);
2191
2192         return (strcmp(s, tgt) == 0);
2193 }
2194
2195 static boolean_t
2196 nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt)
2197 {
2198         uint64_t val;
2199
2200         if (nvlist_lookup_uint64(config, name, &val) != 0)
2201                 return (B_FALSE);
2202
2203         return (val == tgt);
2204 }
2205
2206 static boolean_t
2207 vdev_child_guid_match(nvlist_t *vdev, uint64_t guid)
2208 {
2209         nvlist_t **child;
2210         uint_t c, children;
2211
2212         verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2213             &child, &children) == 0);
2214         for (c = 0; c < children; ++c)
2215                 if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid))
2216                         return (B_TRUE);
2217         return (B_FALSE);
2218 }
2219
2220 static boolean_t
2221 vdev_child_string_match(nvlist_t *vdev, char *tgt)
2222 {
2223         nvlist_t **child;
2224         uint_t c, children;
2225
2226         verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2227             &child, &children) == 0);
2228         for (c = 0; c < children; ++c) {
2229                 if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) ||
2230                     nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt))
2231                         return (B_TRUE);
2232         }
2233         return (B_FALSE);
2234 }
2235
2236 static boolean_t
2237 vdev_guid_match(nvlist_t *config, uint64_t guid)
2238 {
2239         nvlist_t *nvroot;
2240
2241         verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2242             &nvroot) == 0);
2243
2244         return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) ||
2245             vdev_child_guid_match(nvroot, guid));
2246 }
2247
2248 static boolean_t
2249 vdev_string_match(nvlist_t *config, char *tgt)
2250 {
2251         nvlist_t *nvroot;
2252
2253         verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2254             &nvroot) == 0);
2255
2256         return (vdev_child_string_match(nvroot, tgt));
2257 }
2258
2259 static boolean_t
2260 pool_match(nvlist_t *config, char *tgt)
2261 {
2262         uint64_t guid = strtoull(tgt, NULL, 0);
2263
2264         if (guid != 0) {
2265                 return (
2266                     nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) ||
2267                     vdev_guid_match(config, guid));
2268         } else {
2269                 return (
2270                     nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) ||
2271                     vdev_string_match(config, tgt));
2272         }
2273 }
2274
2275 static int
2276 find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir)
2277 {
2278         nvlist_t *pools;
2279         int error = ENOENT;
2280         nvlist_t *match = NULL;
2281
2282         if (vdev_dir != NULL)
2283                 pools = zpool_find_import_activeok(g_zfs, 1, &vdev_dir);
2284         else
2285                 pools = zpool_find_import_activeok(g_zfs, 0, NULL);
2286
2287         if (pools != NULL) {
2288                 nvpair_t *elem = NULL;
2289
2290                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2291                         verify(nvpair_value_nvlist(elem, configp) == 0);
2292                         if (pool_match(*configp, pool_id)) {
2293                                 if (match != NULL) {
2294                                         (void) fatal(
2295                                             "More than one matching pool - "
2296                                             "specify guid/devid/device path.");
2297                                 } else {
2298                                         match = *configp;
2299                                         error = 0;
2300                                 }
2301                         }
2302                 }
2303         }
2304
2305         *configp = error ? NULL : match;
2306
2307         return (error);
2308 }
2309
2310 int
2311 main(int argc, char **argv)
2312 {
2313         int i, c;
2314         struct rlimit rl = { 1024, 1024 };
2315         spa_t *spa;
2316         objset_t *os = NULL;
2317         char *endstr;
2318         int dump_all = 1;
2319         int verbose = 0;
2320         int error;
2321         int exported = 0;
2322         char *vdev_dir = NULL;
2323
2324         (void) setrlimit(RLIMIT_NOFILE, &rl);
2325         (void) enable_extended_FILE_stdio(-1, -1);
2326
2327         dprintf_setup(&argc, argv);
2328
2329         while ((c = getopt(argc, argv, "udibcmsvCLS:U:lRep:t:")) != -1) {
2330                 switch (c) {
2331                 case 'u':
2332                 case 'd':
2333                 case 'i':
2334                 case 'b':
2335                 case 'c':
2336                 case 'm':
2337                 case 's':
2338                 case 'C':
2339                 case 'l':
2340                 case 'R':
2341                         dump_opt[c]++;
2342                         dump_all = 0;
2343                         break;
2344                 case 'L':
2345                         dump_opt[c]++;
2346                         break;
2347                 case 'v':
2348                         verbose++;
2349                         break;
2350                 case 'U':
2351                         spa_config_path = optarg;
2352                         break;
2353                 case 'e':
2354                         exported = 1;
2355                         break;
2356                 case 'p':
2357                         vdev_dir = optarg;
2358                         break;
2359                 case 'S':
2360                         dump_opt[c]++;
2361                         dump_all = 0;
2362                         zdb_sig_user_data = (strncmp(optarg, "user:", 5) == 0);
2363                         if (!zdb_sig_user_data && strncmp(optarg, "all:", 4))
2364                                 usage();
2365                         endstr = strchr(optarg, ':') + 1;
2366                         if (strcmp(endstr, "fletcher2") == 0)
2367                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2368                         else if (strcmp(endstr, "fletcher4") == 0)
2369                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_4;
2370                         else if (strcmp(endstr, "sha256") == 0)
2371                                 zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
2372                         else if (strcmp(endstr, "all") == 0)
2373                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2374                         else
2375                                 usage();
2376                         break;
2377                 case 't':
2378                         ub_max_txg = strtoull(optarg, NULL, 0);
2379                         if (ub_max_txg < TXG_INITIAL) {
2380                                 (void) fprintf(stderr, "incorrect txg "
2381                                     "specified: %s\n", optarg);
2382                                 usage();
2383                         }
2384                         break;
2385                 default:
2386                         usage();
2387                         break;
2388                 }
2389         }
2390
2391         if (vdev_dir != NULL && exported == 0) {
2392                 (void) fprintf(stderr, "-p option requires use of -e\n");
2393                 usage();
2394         }
2395
2396         kernel_init(FREAD);
2397         g_zfs = libzfs_init();
2398         ASSERT(g_zfs != NULL);
2399
2400         for (c = 0; c < 256; c++) {
2401                 if (dump_all && c != 'l' && c != 'R')
2402                         dump_opt[c] = 1;
2403                 if (dump_opt[c])
2404                         dump_opt[c] += verbose;
2405         }
2406
2407         argc -= optind;
2408         argv += optind;
2409
2410         if (argc < 1) {
2411                 if (dump_opt['C']) {
2412                         dump_cachefile(spa_config_path);
2413                         return (0);
2414                 }
2415                 usage();
2416         }
2417
2418         if (dump_opt['l']) {
2419                 dump_label(argv[0]);
2420                 return (0);
2421         }
2422
2423         if (dump_opt['R']) {
2424                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
2425                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
2426                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
2427                 flagbits['e'] = ZDB_FLAG_BSWAP;
2428                 flagbits['g'] = ZDB_FLAG_GBH;
2429                 flagbits['i'] = ZDB_FLAG_INDIRECT;
2430                 flagbits['p'] = ZDB_FLAG_PHYS;
2431                 flagbits['r'] = ZDB_FLAG_RAW;
2432
2433                 spa = NULL;
2434                 while (argv[0]) {
2435                         zdb_read_block(argv[0], &spa);
2436                         argv++;
2437                         argc--;
2438                 }
2439                 if (spa)
2440                         spa_close(spa, (void *)zdb_read_block);
2441                 return (0);
2442         }
2443
2444         if (dump_opt['C'])
2445                 dump_config(argv[0]);
2446
2447         error = 0;
2448         if (exported) {
2449                 /*
2450                  * Check to see if the name refers to an exported zpool
2451                  */
2452                 char *slash;
2453                 nvlist_t *exported_conf = NULL;
2454
2455                 if ((slash = strchr(argv[0], '/')) != NULL)
2456                         *slash = '\0';
2457
2458                 error = find_exported_zpool(argv[0], &exported_conf, vdev_dir);
2459                 if (error == 0) {
2460                         nvlist_t *nvl = NULL;
2461
2462                         if (vdev_dir != NULL) {
2463                                 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
2464                                         error = ENOMEM;
2465                                 else if (nvlist_add_string(nvl,
2466                                     zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
2467                                     vdev_dir) != 0)
2468                                         error = ENOMEM;
2469                         }
2470
2471                         if (error == 0)
2472                                 error = spa_import_verbatim(argv[0],
2473                                     exported_conf, nvl);
2474
2475                         nvlist_free(nvl);
2476                 }
2477
2478                 if (slash != NULL)
2479                         *slash = '/';
2480         }
2481
2482         if (error == 0) {
2483                 if (strchr(argv[0], '/') != NULL) {
2484                         error = dmu_objset_open(argv[0], DMU_OST_ANY,
2485                             DS_MODE_USER | DS_MODE_READONLY, &os);
2486                 } else {
2487                         error = spa_open(argv[0], &spa, FTAG);
2488                 }
2489         }
2490
2491         if (error)
2492                 fatal("can't open %s: %s", argv[0], strerror(error));
2493
2494         argv++;
2495         if (--argc > 0) {
2496                 zopt_objects = argc;
2497                 zopt_object = calloc(zopt_objects, sizeof (uint64_t));
2498                 for (i = 0; i < zopt_objects; i++) {
2499                         errno = 0;
2500                         zopt_object[i] = strtoull(argv[i], NULL, 0);
2501                         if (zopt_object[i] == 0 && errno != 0)
2502                                 fatal("bad object number %s: %s",
2503                                     argv[i], strerror(errno));
2504                 }
2505         }
2506
2507         if (os != NULL) {
2508                 dump_dir(os);
2509                 dmu_objset_close(os);
2510         } else {
2511                 dump_zpool(spa);
2512                 spa_close(spa, FTAG);
2513         }
2514
2515         fuid_table_destroy();
2516
2517         libzfs_fini(g_zfs);
2518         kernel_fini();
2519
2520         return (0);
2521 }