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 2008 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 #undef ZFS_MAXNAMELEN
  54 #undef verify
  55 #include <libzfs.h>
  56
  57 const char cmdname[] = "zdb";
  58 uint8_t dump_opt[256];
  59
  60 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
  61
  62 extern void dump_intent_log(zilog_t *);
  63 uint64_t *zopt_object = NULL;
  64 int zopt_objects = 0;
  65 int zdb_advance = ADVANCE_PRE;
  66 zbookmark_t zdb_noread = { 0, 0, ZB_NO_LEVEL, 0 };
  67 libzfs_handle_t *g_zfs;
  68 boolean_t zdb_sig_user_data = B_TRUE;
  69 int zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
  70
  71 /*
  72  * These libumem hooks provide a reasonable set of defaults for the allocator's
  73  * debugging facilities.
  74  */
  75 const char *
  76 _umem_debug_init()
  77 {
  78         return ("default,verbose"); /* $UMEM_DEBUG setting */
  79 }
  80
  81 const char *
  82 _umem_logging_init(void)
  83 {
  84         return ("fail,contents"); /* $UMEM_LOGGING setting */
  85 }
  86
  87 static void
  88 usage(void)
  89 {
  90         (void) fprintf(stderr,
  91             "Usage: %s [-udibcsvL] [-U cachefile_path] [-O order] "
  92             "[-B os:obj:level:blkid] [-S user:cksumalg] "
  93             "dataset [object...]\n"
  94             "       %s -C [pool]\n"
  95             "       %s -l dev\n"
  96             "       %s -R pool:vdev:offset:size:flags\n"
  97             "       %s [-p path_to_vdev_dir]\n"
  98             "       %s -e pool | GUID | devid ...\n",
  99             cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
 100
 101         (void) fprintf(stderr, "        -u uberblock\n");
 102         (void) fprintf(stderr, "        -d datasets\n");
 103         (void) fprintf(stderr, "        -C cached pool configuration\n");
 104         (void) fprintf(stderr, "        -i intent logs\n");
 105         (void) fprintf(stderr, "        -b block statistics\n");
 106         (void) fprintf(stderr, "        -c checksum all data blocks\n");
 107         (void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
 108         (void) fprintf(stderr, "        -S <user|all>:<cksum_alg|all> -- "
 109             "dump blkptr signatures\n");
 110         (void) fprintf(stderr, "        -v verbose (applies to all others)\n");
 111         (void) fprintf(stderr, "        -l dump label contents\n");
 112         (void) fprintf(stderr, "        -L live pool (allows some errors)\n");
 113         (void) fprintf(stderr, "        -O [!]<pre|post|prune|data|holes> "
 114             "visitation order\n");
 115         (void) fprintf(stderr, "        -U cachefile_path -- use alternate "
 116             "cachefile\n");
 117         (void) fprintf(stderr, "        -B objset:object:level:blkid -- "
 118             "simulate bad block\n");
 119         (void) fprintf(stderr, "        -R read and display block from a "
 120             "device\n");
 121         (void) fprintf(stderr, "        -e Pool is exported/destroyed/"
 122             "has altroot\n");
 123         (void) fprintf(stderr, "        -p <Path to vdev dir> (use with -e)\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 static void
 131 fatal(const char *fmt, ...)
 132 {
 133         va_list ap;
 134
 135         va_start(ap, fmt);
 136         (void) fprintf(stderr, "%s: ", cmdname);
 137         (void) vfprintf(stderr, fmt, ap);
 138         va_end(ap);
 139         (void) fprintf(stderr, "\n");
 140
 141         exit(1);
 142 }
 143
 144 static void
 145 dump_nvlist(nvlist_t *list, int indent)
 146 {
 147         nvpair_t *elem = NULL;
 148
 149         while ((elem = nvlist_next_nvpair(list, elem)) != NULL) {
 150                 switch (nvpair_type(elem)) {
 151                 case DATA_TYPE_STRING:
 152                         {
 153                                 char *value;
 154
 155                                 VERIFY(nvpair_value_string(elem, &value) == 0);
 156                                 (void) printf("%*s%s='%s'\n", indent, "",
 157                                     nvpair_name(elem), value);
 158                         }
 159                         break;
 160
 161                 case DATA_TYPE_UINT64:
 162                         {
 163                                 uint64_t value;
 164
 165                                 VERIFY(nvpair_value_uint64(elem, &value) == 0);
 166                                 (void) printf("%*s%s=%llu\n", indent, "",
 167                                     nvpair_name(elem), (u_longlong_t)value);
 168                         }
 169                         break;
 170
 171                 case DATA_TYPE_NVLIST:
 172                         {
 173                                 nvlist_t *value;
 174
 175                                 VERIFY(nvpair_value_nvlist(elem, &value) == 0);
 176                                 (void) printf("%*s%s\n", indent, "",
 177                                     nvpair_name(elem));
 178                                 dump_nvlist(value, indent + 4);
 179                         }
 180                         break;
 181
 182                 case DATA_TYPE_NVLIST_ARRAY:
 183                         {
 184                                 nvlist_t **value;
 185                                 uint_t c, count;
 186
 187                                 VERIFY(nvpair_value_nvlist_array(elem, &value,
 188                                     &count) == 0);
 189
 190                                 for (c = 0; c < count; c++) {
 191                                         (void) printf("%*s%s[%u]\n", indent, "",
 192                                             nvpair_name(elem), c);
 193                                         dump_nvlist(value[c], indent + 8);
 194                                 }
 195                         }
 196                         break;
 197
 198                 default:
 199
 200                         (void) printf("bad config type %d for %s\n",
 201                             nvpair_type(elem), nvpair_name(elem));
 202                 }
 203         }
 204 }
 205
 206 /* ARGSUSED */
 207 static void
 208 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
 209 {
 210         nvlist_t *nv;
 211         size_t nvsize = *(uint64_t *)data;
 212         char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
 213
 214         VERIFY(0 == dmu_read(os, object, 0, nvsize, packed));
 215
 216         VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
 217
 218         umem_free(packed, nvsize);
 219
 220         dump_nvlist(nv, 8);
 221
 222         nvlist_free(nv);
 223 }
 224
 225 const char dump_zap_stars[] = "****************************************";
 226 const int dump_zap_width = sizeof (dump_zap_stars) - 1;
 227
 228 static void
 229 dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
 230 {
 231         int i;
 232         int minidx = ZAP_HISTOGRAM_SIZE - 1;
 233         int maxidx = 0;
 234         uint64_t max = 0;
 235
 236         for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
 237                 if (histo[i] > max)
 238                         max = histo[i];
 239                 if (histo[i] > 0 && i > maxidx)
 240                         maxidx = i;
 241                 if (histo[i] > 0 && i < minidx)
 242                         minidx = i;
 243         }
 244
 245         if (max < dump_zap_width)
 246                 max = dump_zap_width;
 247
 248         for (i = minidx; i <= maxidx; i++)
 249                 (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
 250                     &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
 251 }
 252
 253 static void
 254 dump_zap_stats(objset_t *os, uint64_t object)
 255 {
 256         int error;
 257         zap_stats_t zs;
 258
 259         error = zap_get_stats(os, object, &zs);
 260         if (error)
 261                 return;
 262
 263         if (zs.zs_ptrtbl_len == 0) {
 264                 ASSERT(zs.zs_num_blocks == 1);
 265                 (void) printf("\tmicrozap: %llu bytes, %llu entries\n",
 266                     (u_longlong_t)zs.zs_blocksize,
 267                     (u_longlong_t)zs.zs_num_entries);
 268                 return;
 269         }
 270
 271         (void) printf("\tFat ZAP stats:\n");
 272
 273         (void) printf("\t\tPointer table:\n");
 274         (void) printf("\t\t\t%llu elements\n",
 275             (u_longlong_t)zs.zs_ptrtbl_len);
 276         (void) printf("\t\t\tzt_blk: %llu\n",
 277             (u_longlong_t)zs.zs_ptrtbl_zt_blk);
 278         (void) printf("\t\t\tzt_numblks: %llu\n",
 279             (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
 280         (void) printf("\t\t\tzt_shift: %llu\n",
 281             (u_longlong_t)zs.zs_ptrtbl_zt_shift);
 282         (void) printf("\t\t\tzt_blks_copied: %llu\n",
 283             (u_longlong_t)zs.zs_ptrtbl_blks_copied);
 284         (void) printf("\t\t\tzt_nextblk: %llu\n",
 285             (u_longlong_t)zs.zs_ptrtbl_nextblk);
 286
 287         (void) printf("\t\tZAP entries: %llu\n",
 288             (u_longlong_t)zs.zs_num_entries);
 289         (void) printf("\t\tLeaf blocks: %llu\n",
 290             (u_longlong_t)zs.zs_num_leafs);
 291         (void) printf("\t\tTotal blocks: %llu\n",
 292             (u_longlong_t)zs.zs_num_blocks);
 293         (void) printf("\t\tzap_block_type: 0x%llx\n",
 294             (u_longlong_t)zs.zs_block_type);
 295         (void) printf("\t\tzap_magic: 0x%llx\n",
 296             (u_longlong_t)zs.zs_magic);
 297         (void) printf("\t\tzap_salt: 0x%llx\n",
 298             (u_longlong_t)zs.zs_salt);
 299
 300         (void) printf("\t\tLeafs with 2^n pointers:\n");
 301         dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
 302
 303         (void) printf("\t\tBlocks with n*5 entries:\n");
 304         dump_zap_histogram(zs.zs_blocks_with_n5_entries);
 305
 306         (void) printf("\t\tBlocks n/10 full:\n");
 307         dump_zap_histogram(zs.zs_blocks_n_tenths_full);
 308
 309         (void) printf("\t\tEntries with n chunks:\n");
 310         dump_zap_histogram(zs.zs_entries_using_n_chunks);
 311
 312         (void) printf("\t\tBuckets with n entries:\n");
 313         dump_zap_histogram(zs.zs_buckets_with_n_entries);
 314 }
 315
 316 /*ARGSUSED*/
 317 static void
 318 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
 319 {
 320 }
 321
 322 /*ARGSUSED*/
 323 void
 324 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
 325 {
 326 }
 327
 328 /*ARGSUSED*/
 329 static void
 330 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
 331 {
 332 }
 333
 334 /*ARGSUSED*/
 335 static void
 336 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
 337 {
 338         zap_cursor_t zc;
 339         zap_attribute_t attr;
 340         void *prop;
 341         int i;
 342
 343         dump_zap_stats(os, object);
 344         (void) printf("\n");
 345
 346         for (zap_cursor_init(&zc, os, object);
 347             zap_cursor_retrieve(&zc, &attr) == 0;
 348             zap_cursor_advance(&zc)) {
 349                 (void) printf("\t\t%s = ", attr.za_name);
 350                 if (attr.za_num_integers == 0) {
 351                         (void) printf("\n");
 352                         continue;
 353                 }
 354                 prop = umem_zalloc(attr.za_num_integers *
 355                     attr.za_integer_length, UMEM_NOFAIL);
 356                 (void) zap_lookup(os, object, attr.za_name,
 357                     attr.za_integer_length, attr.za_num_integers, prop);
 358                 if (attr.za_integer_length == 1) {
 359                         (void) printf("%s", (char *)prop);
 360                 } else {
 361                         for (i = 0; i < attr.za_num_integers; i++) {
 362                                 switch (attr.za_integer_length) {
 363                                 case 2:
 364                                         (void) printf("%u ",
 365                                             ((uint16_t *)prop)[i]);
 366                                         break;
 367                                 case 4:
 368                                         (void) printf("%u ",
 369                                             ((uint32_t *)prop)[i]);
 370                                         break;
 371                                 case 8:
 372                                         (void) printf("%lld ",
 373                                             (u_longlong_t)((int64_t *)prop)[i]);
 374                                         break;
 375                                 }
 376                         }
 377                 }
 378                 (void) printf("\n");
 379                 umem_free(prop, attr.za_num_integers * attr.za_integer_length);
 380         }
 381         zap_cursor_fini(&zc);
 382 }
 383
 384 /*ARGSUSED*/
 385 static void
 386 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
 387 {
 388         zap_cursor_t zc;
 389         zap_attribute_t attr;
 390         const char *typenames[] = {
 391                 /* 0 */ "not specified",
 392                 /* 1 */ "FIFO",
 393                 /* 2 */ "Character Device",
 394                 /* 3 */ "3 (invalid)",
 395                 /* 4 */ "Directory",
 396                 /* 5 */ "5 (invalid)",
 397                 /* 6 */ "Block Device",
 398                 /* 7 */ "7 (invalid)",
 399                 /* 8 */ "Regular File",
 400                 /* 9 */ "9 (invalid)",
 401                 /* 10 */ "Symbolic Link",
 402                 /* 11 */ "11 (invalid)",
 403                 /* 12 */ "Socket",
 404                 /* 13 */ "Door",
 405                 /* 14 */ "Event Port",
 406                 /* 15 */ "15 (invalid)",
 407         };
 408
 409         dump_zap_stats(os, object);
 410         (void) printf("\n");
 411
 412         for (zap_cursor_init(&zc, os, object);
 413             zap_cursor_retrieve(&zc, &attr) == 0;
 414             zap_cursor_advance(&zc)) {
 415                 (void) printf("\t\t%s = %lld (type: %s)\n",
 416                     attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
 417                     typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
 418         }
 419         zap_cursor_fini(&zc);
 420 }
 421
 422 static void
 423 dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
 424 {
 425         uint64_t alloc, offset, entry;
 426         uint8_t mapshift = sm->sm_shift;
 427         uint64_t mapstart = sm->sm_start;
 428         char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
 429                             "INVALID", "INVALID", "INVALID", "INVALID" };
 430
 431         if (smo->smo_object == 0)
 432                 return;
 433
 434         /*
 435          * Print out the freelist entries in both encoded and decoded form.
 436          */
 437         alloc = 0;
 438         for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
 439                 VERIFY(0 == dmu_read(os, smo->smo_object, offset,
 440                     sizeof (entry), &entry));
 441                 if (SM_DEBUG_DECODE(entry)) {
 442                         (void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n",
 443                             (u_longlong_t)(offset / sizeof (entry)),
 444                             ddata[SM_DEBUG_ACTION_DECODE(entry)],
 445                             (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
 446                             (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
 447                 } else {
 448                         (void) printf("\t\t[%4llu]    %c  range:"
 449                             " %08llx-%08llx  size: %06llx\n",
 450                             (u_longlong_t)(offset / sizeof (entry)),
 451                             SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
 452                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 453                             mapshift) + mapstart),
 454                             (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
 455                             mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
 456                             mapshift)),
 457                             (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
 458                         if (SM_TYPE_DECODE(entry) == SM_ALLOC)
 459                                 alloc += SM_RUN_DECODE(entry) << mapshift;
 460                         else
 461                                 alloc -= SM_RUN_DECODE(entry) << mapshift;
 462                 }
 463         }
 464         if (alloc != smo->smo_alloc) {
 465                 (void) printf("space_map_object alloc (%llu) INCONSISTENT "
 466                     "with space map summary (%llu)\n",
 467                     (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
 468         }
 469 }
 470
 471 static void
 472 dump_metaslab(metaslab_t *msp)
 473 {
 474         char freebuf[5];
 475         space_map_obj_t *smo = &msp->ms_smo;
 476         vdev_t *vd = msp->ms_group->mg_vd;
 477         spa_t *spa = vd->vdev_spa;
 478
 479         nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf);
 480
 481         if (dump_opt['d'] <= 5) {
 482                 (void) printf("\t%10llx   %10llu   %5s\n",
 483                     (u_longlong_t)msp->ms_map.sm_start,
 484                     (u_longlong_t)smo->smo_object,
 485                     freebuf);
 486                 return;
 487         }
 488
 489         (void) printf(
 490             "\tvdev %llu   offset %08llx   spacemap %4llu   free %5s\n",
 491             (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start,
 492             (u_longlong_t)smo->smo_object, freebuf);
 493
 494         ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift));
 495
 496         dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map);
 497 }
 498
 499 static void
 500 dump_metaslabs(spa_t *spa)
 501 {
 502         vdev_t *rvd = spa->spa_root_vdev;
 503         vdev_t *vd;
 504         int c, m;
 505
 506         (void) printf("\nMetaslabs:\n");
 507
 508         for (c = 0; c < rvd->vdev_children; c++) {
 509                 vd = rvd->vdev_child[c];
 510
 511                 (void) printf("\n    vdev %llu\n\n", (u_longlong_t)vd->vdev_id);
 512
 513                 if (dump_opt['d'] <= 5) {
 514                         (void) printf("\t%10s   %10s   %5s\n",
 515                             "offset", "spacemap", "free");
 516                         (void) printf("\t%10s   %10s   %5s\n",
 517                             "------", "--------", "----");
 518                 }
 519                 for (m = 0; m < vd->vdev_ms_count; m++)
 520                         dump_metaslab(vd->vdev_ms[m]);
 521                 (void) printf("\n");
 522         }
 523 }
 524
 525 static void
 526 dump_dtl(vdev_t *vd, int indent)
 527 {
 528         avl_tree_t *t = &vd->vdev_dtl_map.sm_root;
 529         space_seg_t *ss;
 530         vdev_t *pvd;
 531         int c;
 532
 533         if (indent == 0)
 534                 (void) printf("\nDirty time logs:\n\n");
 535
 536         (void) printf("\t%*s%s\n", indent, "",
 537             vd->vdev_path ? vd->vdev_path :
 538             vd->vdev_parent ? vd->vdev_ops->vdev_op_type :
 539             spa_name(vd->vdev_spa));
 540
 541         for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) {
 542                 /*
 543                  * Everything in this DTL must appear in all parent DTL unions.
 544                  */
 545                 for (pvd = vd; pvd; pvd = pvd->vdev_parent)
 546                         ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map,
 547                             ss->ss_start, ss->ss_end - ss->ss_start));
 548                 (void) printf("\t%*soutage [%llu,%llu] length %llu\n",
 549                     indent, "",
 550                     (u_longlong_t)ss->ss_start,
 551                     (u_longlong_t)ss->ss_end - 1,
 552                     (u_longlong_t)(ss->ss_end - ss->ss_start));
 553         }
 554
 555         (void) printf("\n");
 556
 557         if (dump_opt['d'] > 5 && vd->vdev_children == 0) {
 558                 dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl,
 559                     &vd->vdev_dtl_map);
 560                 (void) printf("\n");
 561         }
 562
 563         for (c = 0; c < vd->vdev_children; c++)
 564                 dump_dtl(vd->vdev_child[c], indent + 4);
 565 }
 566
 567 /*ARGSUSED*/
 568 static void
 569 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
 570 {
 571 }
 572
 573 static uint64_t
 574 blkid2offset(dnode_phys_t *dnp, int level, uint64_t blkid)
 575 {
 576         if (level < 0)
 577                 return (blkid);
 578
 579         return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
 580             dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
 581 }
 582
 583 static void
 584 sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas)
 585 {
 586         dva_t *dva = bp->blk_dva;
 587         int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1;
 588         int i;
 589
 590         blkbuf[0] = '\0';
 591
 592         for (i = 0; i < ndvas; i++)
 593                 (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
 594                     (u_longlong_t)DVA_GET_VDEV(&dva[i]),
 595                     (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
 596                     (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
 597
 598         (void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu",
 599             (u_longlong_t)BP_GET_LSIZE(bp),
 600             (u_longlong_t)BP_GET_PSIZE(bp),
 601             (u_longlong_t)bp->blk_fill,
 602             (u_longlong_t)bp->blk_birth);
 603 }
 604
 605 /* ARGSUSED */
 606 static int
 607 zdb_indirect_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a)
 608 {
 609         zbookmark_t *zb = &bc->bc_bookmark;
 610         blkptr_t *bp = &bc->bc_blkptr;
 611         void *data = bc->bc_data;
 612         dnode_phys_t *dnp = bc->bc_dnode;
 613         char blkbuf[BP_SPRINTF_LEN + 80];
 614         int l;
 615
 616         if (bc->bc_errno) {
 617                 (void) sprintf(blkbuf,
 618                     "Error %d reading <%llu, %llu, %lld, %llu>: ",
 619                     bc->bc_errno,
 620                     (u_longlong_t)zb->zb_objset,
 621                     (u_longlong_t)zb->zb_object,
 622                     (u_longlong_t)zb->zb_level,
 623                     (u_longlong_t)zb->zb_blkid);
 624                 goto out;
 625         }
 626
 627         if (zb->zb_level == -1) {
 628                 ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET);
 629                 ASSERT3U(BP_GET_LEVEL(bp), ==, 0);
 630         } else {
 631                 ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
 632                 ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
 633         }
 634
 635         if (zb->zb_level > 0) {
 636                 uint64_t fill = 0;
 637                 blkptr_t *bpx, *bpend;
 638
 639                 for (bpx = data, bpend = bpx + BP_GET_LSIZE(bp) / sizeof (*bpx);
 640                     bpx < bpend; bpx++) {
 641                         if (bpx->blk_birth != 0) {
 642                                 fill += bpx->blk_fill;
 643                         } else {
 644                                 ASSERT(bpx->blk_fill == 0);
 645                         }
 646                 }
 647                 ASSERT3U(fill, ==, bp->blk_fill);
 648         }
 649
 650         if (zb->zb_level == 0 && dnp->dn_type == DMU_OT_DNODE) {
 651                 uint64_t fill = 0;
 652                 dnode_phys_t *dnx, *dnend;
 653
 654                 for (dnx = data, dnend = dnx + (BP_GET_LSIZE(bp)>>DNODE_SHIFT);
 655                     dnx < dnend; dnx++) {
 656                         if (dnx->dn_type != DMU_OT_NONE)
 657                                 fill++;
 658                 }
 659                 ASSERT3U(fill, ==, bp->blk_fill);
 660         }
 661
 662         (void) sprintf(blkbuf, "%16llx ",
 663             (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid));
 664
 665         ASSERT(zb->zb_level >= 0);
 666
 667         for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
 668                 if (l == zb->zb_level) {
 669                         (void) sprintf(blkbuf + strlen(blkbuf), "L%llx",
 670                             (u_longlong_t)zb->zb_level);
 671                 } else {
 672                         (void) sprintf(blkbuf + strlen(blkbuf), " ");
 673                 }
 674         }
 675
 676 out:
 677         if (bp->blk_birth == 0) {
 678                 (void) sprintf(blkbuf + strlen(blkbuf), "<hole>");
 679                 (void) printf("%s\n", blkbuf);
 680         } else {
 681                 sprintf_blkptr_compact(blkbuf + strlen(blkbuf), bp,
 682                     dump_opt['d'] > 5 ? 1 : 0);
 683                 (void) printf("%s\n", blkbuf);
 684         }
 685
 686         return (bc->bc_errno ? ERESTART : 0);
 687 }
 688
 689 /*ARGSUSED*/
 690 static void
 691 dump_indirect(objset_t *os, uint64_t object, void *data, size_t size)
 692 {
 693         traverse_handle_t *th;
 694         uint64_t objset = dmu_objset_id(os);
 695         int advance = zdb_advance;
 696
 697         (void) printf("Indirect blocks:\n");
 698
 699         if (object == 0)
 700                 advance |= ADVANCE_DATA;
 701
 702         th = traverse_init(dmu_objset_spa(os), zdb_indirect_cb, NULL, advance,
 703             ZIO_FLAG_CANFAIL);
 704         th->th_noread = zdb_noread;
 705
 706         traverse_add_dnode(th, 0, -1ULL, objset, object);
 707
 708         while (traverse_more(th) == EAGAIN)
 709                 continue;
 710
 711         (void) printf("\n");
 712
 713         traverse_fini(th);
 714 }
 715
 716 /*ARGSUSED*/
 717 static void
 718 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
 719 {
 720         dsl_dir_phys_t *dd = data;
 721         time_t crtime;
 722         char nice[6];
 723
 724         if (dd == NULL)
 725                 return;
 726
 727         ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
 728
 729         crtime = dd->dd_creation_time;
 730         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
 731         (void) printf("\t\thead_dataset_obj = %llu\n",
 732             (u_longlong_t)dd->dd_head_dataset_obj);
 733         (void) printf("\t\tparent_dir_obj = %llu\n",
 734             (u_longlong_t)dd->dd_parent_obj);
 735         (void) printf("\t\torigin_obj = %llu\n",
 736             (u_longlong_t)dd->dd_origin_obj);
 737         (void) printf("\t\tchild_dir_zapobj = %llu\n",
 738             (u_longlong_t)dd->dd_child_dir_zapobj);
 739         nicenum(dd->dd_used_bytes, nice);
 740         (void) printf("\t\tused_bytes = %s\n", nice);
 741         nicenum(dd->dd_compressed_bytes, nice);
 742         (void) printf("\t\tcompressed_bytes = %s\n", nice);
 743         nicenum(dd->dd_uncompressed_bytes, nice);
 744         (void) printf("\t\tuncompressed_bytes = %s\n", nice);
 745         nicenum(dd->dd_quota, nice);
 746         (void) printf("\t\tquota = %s\n", nice);
 747         nicenum(dd->dd_reserved, nice);
 748         (void) printf("\t\treserved = %s\n", nice);
 749         (void) printf("\t\tprops_zapobj = %llu\n",
 750             (u_longlong_t)dd->dd_props_zapobj);
 751         (void) printf("\t\tdeleg_zapobj = %llu\n",
 752             (u_longlong_t)dd->dd_deleg_zapobj);
 753         (void) printf("\t\tflags = %llx\n",
 754             (u_longlong_t)dd->dd_flags);
 755
 756 #define DO(which) \
 757         nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
 758         (void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
 759         DO(HEAD);
 760         DO(SNAP);
 761         DO(CHILD);
 762         DO(CHILD_RSRV);
 763         DO(REFRSRV);
 764 #undef DO
 765 }
 766
 767 /*ARGSUSED*/
 768 static void
 769 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
 770 {
 771         dsl_dataset_phys_t *ds = data;
 772         time_t crtime;
 773         char used[6], compressed[6], uncompressed[6], unique[6];
 774         char blkbuf[BP_SPRINTF_LEN];
 775
 776         if (ds == NULL)
 777                 return;
 778
 779         ASSERT(size == sizeof (*ds));
 780         crtime = ds->ds_creation_time;
 781         nicenum(ds->ds_used_bytes, used);
 782         nicenum(ds->ds_compressed_bytes, compressed);
 783         nicenum(ds->ds_uncompressed_bytes, uncompressed);
 784         nicenum(ds->ds_unique_bytes, unique);
 785         sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp);
 786
 787         (void) printf("\t\tdir_obj = %llu\n",
 788             (u_longlong_t)ds->ds_dir_obj);
 789         (void) printf("\t\tprev_snap_obj = %llu\n",
 790             (u_longlong_t)ds->ds_prev_snap_obj);
 791         (void) printf("\t\tprev_snap_txg = %llu\n",
 792             (u_longlong_t)ds->ds_prev_snap_txg);
 793         (void) printf("\t\tnext_snap_obj = %llu\n",
 794             (u_longlong_t)ds->ds_next_snap_obj);
 795         (void) printf("\t\tsnapnames_zapobj = %llu\n",
 796             (u_longlong_t)ds->ds_snapnames_zapobj);
 797         (void) printf("\t\tnum_children = %llu\n",
 798             (u_longlong_t)ds->ds_num_children);
 799         (void) printf("\t\tcreation_time = %s", ctime(&crtime));
 800         (void) printf("\t\tcreation_txg = %llu\n",
 801             (u_longlong_t)ds->ds_creation_txg);
 802         (void) printf("\t\tdeadlist_obj = %llu\n",
 803             (u_longlong_t)ds->ds_deadlist_obj);
 804         (void) printf("\t\tused_bytes = %s\n", used);
 805         (void) printf("\t\tcompressed_bytes = %s\n", compressed);
 806         (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
 807         (void) printf("\t\tunique = %s\n", unique);
 808         (void) printf("\t\tfsid_guid = %llu\n",
 809             (u_longlong_t)ds->ds_fsid_guid);
 810         (void) printf("\t\tguid = %llu\n",
 811             (u_longlong_t)ds->ds_guid);
 812         (void) printf("\t\tflags = %llx\n",
 813             (u_longlong_t)ds->ds_flags);
 814         (void) printf("\t\tnext_clones_obj = %llu\n",
 815             (u_longlong_t)ds->ds_next_clones_obj);
 816         (void) printf("\t\tprops_obj = %llu\n",
 817             (u_longlong_t)ds->ds_props_obj);
 818         (void) printf("\t\tbp = %s\n", blkbuf);
 819 }
 820
 821 static void
 822 dump_bplist(objset_t *mos, uint64_t object, char *name)
 823 {
 824         bplist_t bpl = { 0 };
 825         blkptr_t blk, *bp = &blk;
 826         uint64_t itor = 0;
 827         char bytes[6];
 828         char comp[6];
 829         char uncomp[6];
 830
 831         if (dump_opt['d'] < 3)
 832                 return;
 833
 834         mutex_init(&bpl.bpl_lock, NULL, MUTEX_DEFAULT, NULL);
 835         VERIFY(0 == bplist_open(&bpl, mos, object));
 836         if (bplist_empty(&bpl)) {
 837                 bplist_close(&bpl);
 838                 mutex_destroy(&bpl.bpl_lock);
 839                 return;
 840         }
 841
 842         nicenum(bpl.bpl_phys->bpl_bytes, bytes);
 843         if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) {
 844                 nicenum(bpl.bpl_phys->bpl_comp, comp);
 845                 nicenum(bpl.bpl_phys->bpl_uncomp, uncomp);
 846                 (void) printf("\n    %s: %llu entries, %s (%s/%s comp)\n",
 847                     name, (u_longlong_t)bpl.bpl_phys->bpl_entries,
 848                     bytes, comp, uncomp);
 849         } else {
 850                 (void) printf("\n    %s: %llu entries, %s\n",
 851                     name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes);
 852         }
 853
 854         if (dump_opt['d'] < 5) {
 855                 bplist_close(&bpl);
 856                 mutex_destroy(&bpl.bpl_lock);
 857                 return;
 858         }
 859
 860         (void) printf("\n");
 861
 862         while (bplist_iterate(&bpl, &itor, bp) == 0) {
 863                 char blkbuf[BP_SPRINTF_LEN];
 864
 865                 ASSERT(bp->blk_birth != 0);
 866                 sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
 867                 (void) printf("\tItem %3llu: %s\n",
 868                     (u_longlong_t)itor - 1, blkbuf);
 869         }
 870
 871         bplist_close(&bpl);
 872         mutex_destroy(&bpl.bpl_lock);
 873 }
 874
 875 static avl_tree_t idx_tree;
 876 static avl_tree_t domain_tree;
 877 static boolean_t fuid_table_loaded;
 878
 879 static void
 880 fuid_table_destroy()
 881 {
 882         if (fuid_table_loaded) {
 883                 zfs_fuid_table_destroy(&idx_tree, &domain_tree);
 884                 fuid_table_loaded = B_FALSE;
 885         }
 886 }
 887
 888 /*
 889  * print uid or gid information.
 890  * For normal POSIX id just the id is printed in decimal format.
 891  * For CIFS files with FUID the fuid is printed in hex followed by
 892  * the doman-rid string.
 893  */
 894 static void
 895 print_idstr(uint64_t id, const char *id_type)
 896 {
 897         if (FUID_INDEX(id)) {
 898                 char *domain;
 899
 900                 domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
 901                 (void) printf("\t%s     %llx [%s-%d]\n", id_type,
 902                     (u_longlong_t)id, domain, (int)FUID_RID(id));
 903         } else {
 904                 (void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
 905         }
 906
 907 }
 908
 909 static void
 910 dump_uidgid(objset_t *os, znode_phys_t *zp)
 911 {
 912         uint32_t uid_idx, gid_idx;
 913
 914         uid_idx = FUID_INDEX(zp->zp_uid);
 915         gid_idx = FUID_INDEX(zp->zp_gid);
 916
 917         /* Load domain table, if not already loaded */
 918         if (!fuid_table_loaded && (uid_idx || gid_idx)) {
 919                 uint64_t fuid_obj;
 920
 921                 /* first find the fuid object.  It lives in the master node */
 922                 VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
 923                     8, 1, &fuid_obj) == 0);
 924                 (void) zfs_fuid_table_load(os, fuid_obj,
 925                     &idx_tree, &domain_tree);
 926                 fuid_table_loaded = B_TRUE;
 927         }
 928
 929         print_idstr(zp->zp_uid, "uid");
 930         print_idstr(zp->zp_gid, "gid");
 931 }
 932
 933 /*ARGSUSED*/
 934 static void
 935 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
 936 {
 937         znode_phys_t *zp = data;
 938         time_t z_crtime, z_atime, z_mtime, z_ctime;
 939         char path[MAXPATHLEN * 2];      /* allow for xattr and failure prefix */
 940         int error;
 941
 942         ASSERT(size >= sizeof (znode_phys_t));
 943
 944         error = zfs_obj_to_path(os, object, path, sizeof (path));
 945         if (error != 0) {
 946                 (void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
 947                     (u_longlong_t)object);
 948         }
 949
 950         if (dump_opt['d'] < 3) {
 951                 (void) printf("\t%s\n", path);
 952                 return;
 953         }
 954
 955         z_crtime = (time_t)zp->zp_crtime[0];
 956         z_atime = (time_t)zp->zp_atime[0];
 957         z_mtime = (time_t)zp->zp_mtime[0];
 958         z_ctime = (time_t)zp->zp_ctime[0];
 959
 960         (void) printf("\tpath   %s\n", path);
 961         dump_uidgid(os, zp);
 962         (void) printf("\tatime  %s", ctime(&z_atime));
 963         (void) printf("\tmtime  %s", ctime(&z_mtime));
 964         (void) printf("\tctime  %s", ctime(&z_ctime));
 965         (void) printf("\tcrtime %s", ctime(&z_crtime));
 966         (void) printf("\tgen    %llu\n", (u_longlong_t)zp->zp_gen);
 967         (void) printf("\tmode   %llo\n", (u_longlong_t)zp->zp_mode);
 968         (void) printf("\tsize   %llu\n", (u_longlong_t)zp->zp_size);
 969         (void) printf("\tparent %llu\n", (u_longlong_t)zp->zp_parent);
 970         (void) printf("\tlinks  %llu\n", (u_longlong_t)zp->zp_links);
 971         (void) printf("\txattr  %llu\n", (u_longlong_t)zp->zp_xattr);
 972         (void) printf("\trdev   0x%016llx\n", (u_longlong_t)zp->zp_rdev);
 973 }
 974
 975 /*ARGSUSED*/
 976 static void
 977 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
 978 {
 979 }
 980
 981 /*ARGSUSED*/
 982 static void
 983 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
 984 {
 985 }
 986
 987 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = {
 988         dump_none,              /* unallocated                  */
 989         dump_zap,               /* object directory             */
 990         dump_uint64,            /* object array                 */
 991         dump_none,              /* packed nvlist                */
 992         dump_packed_nvlist,     /* packed nvlist size           */
 993         dump_none,              /* bplist                       */
 994         dump_none,              /* bplist header                */
 995         dump_none,              /* SPA space map header         */
 996         dump_none,              /* SPA space map                */
 997         dump_none,              /* ZIL intent log               */
 998         dump_dnode,             /* DMU dnode                    */
 999         dump_dmu_objset,        /* DMU objset                   */
1000         dump_dsl_dir,           /* DSL directory                */
1001         dump_zap,               /* DSL directory child map      */
1002         dump_zap,               /* DSL dataset snap map         */
1003         dump_zap,               /* DSL props                    */
1004         dump_dsl_dataset,       /* DSL dataset                  */
1005         dump_znode,             /* ZFS znode                    */
1006         dump_acl,               /* ZFS V0 ACL                   */
1007         dump_uint8,             /* ZFS plain file               */
1008         dump_zpldir,            /* ZFS directory                */
1009         dump_zap,               /* ZFS master node              */
1010         dump_zap,               /* ZFS delete queue             */
1011         dump_uint8,             /* zvol object                  */
1012         dump_zap,               /* zvol prop                    */
1013         dump_uint8,             /* other uint8[]                */
1014         dump_uint64,            /* other uint64[]               */
1015         dump_zap,               /* other ZAP                    */
1016         dump_zap,               /* persistent error log         */
1017         dump_uint8,             /* SPA history                  */
1018         dump_uint64,            /* SPA history offsets          */
1019         dump_zap,               /* Pool properties              */
1020         dump_zap,               /* DSL permissions              */
1021         dump_acl,               /* ZFS ACL                      */
1022         dump_uint8,             /* ZFS SYSACL                   */
1023         dump_none,              /* FUID nvlist                  */
1024         dump_packed_nvlist,     /* FUID nvlist size             */
1025         dump_zap,               /* DSL dataset next clones      */
1026         dump_zap,               /* DSL scrub queue              */
1027 };
1028
1029 static void
1030 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1031 {
1032         dmu_buf_t *db = NULL;
1033         dmu_object_info_t doi;
1034         dnode_t *dn;
1035         void *bonus = NULL;
1036         size_t bsize = 0;
1037         char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6];
1038         char aux[50];
1039         int error;
1040
1041         if (*print_header) {
1042                 (void) printf("\n    Object  lvl   iblk   dblk  lsize"
1043                     "  asize  type\n");
1044                 *print_header = 0;
1045         }
1046
1047         if (object == 0) {
1048                 dn = os->os->os_meta_dnode;
1049         } else {
1050                 error = dmu_bonus_hold(os, object, FTAG, &db);
1051                 if (error)
1052                         fatal("dmu_bonus_hold(%llu) failed, errno %u",
1053                             object, error);
1054                 bonus = db->db_data;
1055                 bsize = db->db_size;
1056                 dn = ((dmu_buf_impl_t *)db)->db_dnode;
1057         }
1058         dmu_object_info_from_dnode(dn, &doi);
1059
1060         nicenum(doi.doi_metadata_block_size, iblk);
1061         nicenum(doi.doi_data_block_size, dblk);
1062         nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1),
1063             lsize);
1064         nicenum(doi.doi_physical_blks << 9, asize);
1065         nicenum(doi.doi_bonus_size, bonus_size);
1066
1067         aux[0] = '\0';
1068
1069         if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1070                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1071                     zio_checksum_table[doi.doi_checksum].ci_name);
1072         }
1073
1074         if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1075                 (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1076                     zio_compress_table[doi.doi_compress].ci_name);
1077         }
1078
1079         (void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %s%s\n",
1080             (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize,
1081             asize, dmu_ot[doi.doi_type].ot_name, aux);
1082
1083         if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1084                 (void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %s\n",
1085                     "", "", "", "", bonus_size, "bonus",
1086                     dmu_ot[doi.doi_bonus_type].ot_name);
1087         }
1088
1089         if (verbosity >= 4) {
1090                 object_viewer[doi.doi_bonus_type](os, object, bonus, bsize);
1091                 object_viewer[doi.doi_type](os, object, NULL, 0);
1092                 *print_header = 1;
1093         }
1094
1095         if (verbosity >= 5)
1096                 dump_indirect(os, object, NULL, 0);
1097
1098         if (verbosity >= 5) {
1099                 /*
1100                  * Report the list of segments that comprise the object.
1101                  */
1102                 uint64_t start = 0;
1103                 uint64_t end;
1104                 uint64_t blkfill = 1;
1105                 int minlvl = 1;
1106
1107                 if (dn->dn_type == DMU_OT_DNODE) {
1108                         minlvl = 0;
1109                         blkfill = DNODES_PER_BLOCK;
1110                 }
1111
1112                 for (;;) {
1113                         error = dnode_next_offset(dn,
1114                             0, &start, minlvl, blkfill, 0);
1115                         if (error)
1116                                 break;
1117                         end = start;
1118                         error = dnode_next_offset(dn,
1119                             DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1120                         nicenum(end - start, segsize);
1121                         (void) printf("\t\tsegment [%016llx, %016llx)"
1122                             " size %5s\n", (u_longlong_t)start,
1123                             (u_longlong_t)end, segsize);
1124                         if (error)
1125                                 break;
1126                         start = end;
1127                 }
1128         }
1129
1130         if (db != NULL)
1131                 dmu_buf_rele(db, FTAG);
1132 }
1133
1134 static char *objset_types[DMU_OST_NUMTYPES] = {
1135         "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1136
1137 static void
1138 dump_dir(objset_t *os)
1139 {
1140         dmu_objset_stats_t dds;
1141         uint64_t object, object_count;
1142         uint64_t refdbytes, usedobjs, scratch;
1143         char numbuf[8];
1144         char blkbuf[BP_SPRINTF_LEN];
1145         char osname[MAXNAMELEN];
1146         char *type = "UNKNOWN";
1147         int verbosity = dump_opt['d'];
1148         int print_header = 1;
1149         int i, error;
1150
1151         dmu_objset_fast_stat(os, &dds);
1152
1153         if (dds.dds_type < DMU_OST_NUMTYPES)
1154                 type = objset_types[dds.dds_type];
1155
1156         if (dds.dds_type == DMU_OST_META) {
1157                 dds.dds_creation_txg = TXG_INITIAL;
1158                 usedobjs = os->os->os_rootbp->blk_fill;
1159                 refdbytes = os->os->os_spa->spa_dsl_pool->
1160                     dp_mos_dir->dd_phys->dd_used_bytes;
1161         } else {
1162                 dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1163         }
1164
1165         ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill);
1166
1167         nicenum(refdbytes, numbuf);
1168
1169         if (verbosity >= 4) {
1170                 (void) strcpy(blkbuf, ", rootbp ");
1171                 sprintf_blkptr(blkbuf + strlen(blkbuf),
1172                     BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp);
1173         } else {
1174                 blkbuf[0] = '\0';
1175         }
1176
1177         dmu_objset_name(os, osname);
1178
1179         (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1180             "%s, %llu objects%s\n",
1181             osname, type, (u_longlong_t)dmu_objset_id(os),
1182             (u_longlong_t)dds.dds_creation_txg,
1183             numbuf, (u_longlong_t)usedobjs, blkbuf);
1184
1185         dump_intent_log(dmu_objset_zil(os));
1186
1187         if (dmu_objset_ds(os) != NULL)
1188                 dump_bplist(dmu_objset_pool(os)->dp_meta_objset,
1189                     dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist");
1190
1191         if (verbosity < 2)
1192                 return;
1193
1194         if (os->os->os_rootbp->blk_birth == 0)
1195                 return;
1196
1197         if (zopt_objects != 0) {
1198                 for (i = 0; i < zopt_objects; i++)
1199                         dump_object(os, zopt_object[i], verbosity,
1200                             &print_header);
1201                 (void) printf("\n");
1202                 return;
1203         }
1204
1205         dump_object(os, 0, verbosity, &print_header);
1206         object_count = 1;
1207
1208         object = 0;
1209         while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1210                 dump_object(os, object, verbosity, &print_header);
1211                 object_count++;
1212         }
1213
1214         ASSERT3U(object_count, ==, usedobjs);
1215
1216         (void) printf("\n");
1217
1218         if (error != ESRCH)
1219                 fatal("dmu_object_next() = %d", error);
1220 }
1221
1222 static void
1223 dump_uberblock(uberblock_t *ub)
1224 {
1225         time_t timestamp = ub->ub_timestamp;
1226
1227         (void) printf("Uberblock\n\n");
1228         (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1229         (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1230         (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1231         (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1232         (void) printf("\ttimestamp = %llu UTC = %s",
1233             (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1234         if (dump_opt['u'] >= 3) {
1235                 char blkbuf[BP_SPRINTF_LEN];
1236                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp);
1237                 (void) printf("\trootbp = %s\n", blkbuf);
1238         }
1239         (void) printf("\n");
1240 }
1241
1242 static void
1243 dump_config(const char *pool)
1244 {
1245         spa_t *spa = NULL;
1246
1247         mutex_enter(&spa_namespace_lock);
1248         while ((spa = spa_next(spa)) != NULL) {
1249                 if (pool == NULL)
1250                         (void) printf("%s\n", spa_name(spa));
1251                 if (pool == NULL || strcmp(pool, spa_name(spa)) == 0)
1252                         dump_nvlist(spa->spa_config, 4);
1253         }
1254         mutex_exit(&spa_namespace_lock);
1255 }
1256
1257 static void
1258 dump_cachefile(const char *cachefile)
1259 {
1260         int fd;
1261         struct stat64 statbuf;
1262         char *buf;
1263         nvlist_t *config;
1264
1265         if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1266                 (void) printf("cannot open '%s': %s\n", cachefile,
1267                     strerror(errno));
1268                 exit(1);
1269         }
1270
1271         if (fstat64(fd, &statbuf) != 0) {
1272                 (void) printf("failed to stat '%s': %s\n", cachefile,
1273                     strerror(errno));
1274                 exit(1);
1275         }
1276
1277         if ((buf = malloc(statbuf.st_size)) == NULL) {
1278                 (void) fprintf(stderr, "failed to allocate %llu bytes\n",
1279                     (u_longlong_t)statbuf.st_size);
1280                 exit(1);
1281         }
1282
1283         if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1284                 (void) fprintf(stderr, "failed to read %llu bytes\n",
1285                     (u_longlong_t)statbuf.st_size);
1286                 exit(1);
1287         }
1288
1289         (void) close(fd);
1290
1291         if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1292                 (void) fprintf(stderr, "failed to unpack nvlist\n");
1293                 exit(1);
1294         }
1295
1296         free(buf);
1297
1298         dump_nvlist(config, 0);
1299
1300         nvlist_free(config);
1301 }
1302
1303 static void
1304 dump_label(const char *dev)
1305 {
1306         int fd;
1307         vdev_label_t label;
1308         char *buf = label.vl_vdev_phys.vp_nvlist;
1309         size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1310         struct stat64 statbuf;
1311         uint64_t psize;
1312         int l;
1313
1314         if ((fd = open64(dev, O_RDONLY)) < 0) {
1315                 (void) printf("cannot open '%s': %s\n", dev, strerror(errno));
1316                 exit(1);
1317         }
1318
1319         if (fstat64(fd, &statbuf) != 0) {
1320                 (void) printf("failed to stat '%s': %s\n", dev,
1321                     strerror(errno));
1322                 exit(1);
1323         }
1324
1325         psize = statbuf.st_size;
1326         psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1327
1328         for (l = 0; l < VDEV_LABELS; l++) {
1329
1330                 nvlist_t *config = NULL;
1331
1332                 (void) printf("--------------------------------------------\n");
1333                 (void) printf("LABEL %d\n", l);
1334                 (void) printf("--------------------------------------------\n");
1335
1336                 if (pread64(fd, &label, sizeof (label),
1337                     vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1338                         (void) printf("failed to read label %d\n", l);
1339                         continue;
1340                 }
1341
1342                 if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1343                         (void) printf("failed to unpack label %d\n", l);
1344                         continue;
1345                 }
1346                 dump_nvlist(config, 4);
1347                 nvlist_free(config);
1348         }
1349 }
1350
1351 /*ARGSUSED*/
1352 static int
1353 dump_one_dir(char *dsname, void *arg)
1354 {
1355         int error;
1356         objset_t *os;
1357
1358         error = dmu_objset_open(dsname, DMU_OST_ANY,
1359             DS_MODE_USER | DS_MODE_READONLY, &os);
1360         if (error) {
1361                 (void) printf("Could not open %s\n", dsname);
1362                 return (0);
1363         }
1364         dump_dir(os);
1365         dmu_objset_close(os);
1366         fuid_table_destroy();
1367         return (0);
1368 }
1369
1370 static void
1371 zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
1372 {
1373         vdev_t *vd = sm->sm_ppd;
1374
1375         (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
1376             (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
1377 }
1378
1379 /* ARGSUSED */
1380 static void
1381 zdb_space_map_load(space_map_t *sm)
1382 {
1383 }
1384
1385 static void
1386 zdb_space_map_unload(space_map_t *sm)
1387 {
1388         space_map_vacate(sm, zdb_leak, sm);
1389 }
1390
1391 /* ARGSUSED */
1392 static void
1393 zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
1394 {
1395 }
1396
1397 static space_map_ops_t zdb_space_map_ops = {
1398         zdb_space_map_load,
1399         zdb_space_map_unload,
1400         NULL,   /* alloc */
1401         zdb_space_map_claim,
1402         NULL    /* free */
1403 };
1404
1405 static void
1406 zdb_leak_init(spa_t *spa)
1407 {
1408         vdev_t *rvd = spa->spa_root_vdev;
1409
1410         for (int c = 0; c < rvd->vdev_children; c++) {
1411                 vdev_t *vd = rvd->vdev_child[c];
1412                 for (int m = 0; m < vd->vdev_ms_count; m++) {
1413                         metaslab_t *msp = vd->vdev_ms[m];
1414                         mutex_enter(&msp->ms_lock);
1415                         VERIFY(space_map_load(&msp->ms_map, &zdb_space_map_ops,
1416                             SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset) == 0);
1417                         msp->ms_map.sm_ppd = vd;
1418                         mutex_exit(&msp->ms_lock);
1419                 }
1420         }
1421 }
1422
1423 static void
1424 zdb_leak_fini(spa_t *spa)
1425 {
1426         vdev_t *rvd = spa->spa_root_vdev;
1427
1428         for (int c = 0; c < rvd->vdev_children; c++) {
1429                 vdev_t *vd = rvd->vdev_child[c];
1430                 for (int m = 0; m < vd->vdev_ms_count; m++) {
1431                         metaslab_t *msp = vd->vdev_ms[m];
1432                         mutex_enter(&msp->ms_lock);
1433                         space_map_unload(&msp->ms_map);
1434                         mutex_exit(&msp->ms_lock);
1435                 }
1436         }
1437 }
1438
1439 /*
1440  * Verify that the sum of the sizes of all blocks in the pool adds up
1441  * to the SPA's sa_alloc total.
1442  */
1443 typedef struct zdb_blkstats {
1444         uint64_t        zb_asize;
1445         uint64_t        zb_lsize;
1446         uint64_t        zb_psize;
1447         uint64_t        zb_count;
1448 } zdb_blkstats_t;
1449
1450 #define DMU_OT_DEFERRED DMU_OT_NONE
1451 #define DMU_OT_TOTAL    DMU_OT_NUMTYPES
1452
1453 #define ZB_TOTAL        ZB_MAXLEVEL
1454
1455 typedef struct zdb_cb {
1456         zdb_blkstats_t  zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1];
1457         uint64_t        zcb_errors[256];
1458         traverse_blk_cache_t *zcb_cache;
1459         int             zcb_readfails;
1460         int             zcb_haderrors;
1461 } zdb_cb_t;
1462
1463 static void
1464 zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, int type)
1465 {
1466         for (int i = 0; i < 4; i++) {
1467                 int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1468                 int t = (i & 1) ? type : DMU_OT_TOTAL;
1469                 zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1470
1471                 zb->zb_asize += BP_GET_ASIZE(bp);
1472                 zb->zb_lsize += BP_GET_LSIZE(bp);
1473                 zb->zb_psize += BP_GET_PSIZE(bp);
1474                 zb->zb_count++;
1475         }
1476
1477         if (dump_opt['S']) {
1478                 boolean_t print_sig;
1479
1480                 print_sig  = !zdb_sig_user_data || (BP_GET_LEVEL(bp) == 0 &&
1481                     BP_GET_TYPE(bp) == DMU_OT_PLAIN_FILE_CONTENTS);
1482
1483                 if (BP_GET_CHECKSUM(bp) < zdb_sig_cksumalg)
1484                         print_sig = B_FALSE;
1485
1486                 if (print_sig) {
1487                         (void) printf("%llu\t%lld\t%lld\t%s\t%s\t%s\t"
1488                             "%llx:%llx:%llx:%llx\n",
1489                             (u_longlong_t)BP_GET_LEVEL(bp),
1490                             (longlong_t)BP_GET_PSIZE(bp),
1491                             (longlong_t)BP_GET_NDVAS(bp),
1492                             dmu_ot[BP_GET_TYPE(bp)].ot_name,
1493                             zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1494                             zio_compress_table[BP_GET_COMPRESS(bp)].ci_name,
1495                             (u_longlong_t)bp->blk_cksum.zc_word[0],
1496                             (u_longlong_t)bp->blk_cksum.zc_word[1],
1497                             (u_longlong_t)bp->blk_cksum.zc_word[2],
1498                             (u_longlong_t)bp->blk_cksum.zc_word[3]);
1499                 }
1500         }
1501
1502         if (!dump_opt['L'])
1503                 VERIFY(zio_wait(zio_claim(NULL, spa, spa_first_txg(spa), bp,
1504                     NULL, NULL, ZIO_FLAG_MUSTSUCCEED)) == 0);
1505 }
1506
1507 static int
1508 zdb_blkptr_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg)
1509 {
1510         zbookmark_t *zb = &bc->bc_bookmark;
1511         zdb_cb_t *zcb = arg;
1512         blkptr_t *bp = &bc->bc_blkptr;
1513         dmu_object_type_t type = BP_GET_TYPE(bp);
1514         char blkbuf[BP_SPRINTF_LEN];
1515         int error = 0;
1516
1517         ASSERT(!BP_IS_HOLE(bp));
1518
1519         zdb_count_block(spa, zcb, bp, type);
1520
1521         if (bc->bc_errno) {
1522                 if (zcb->zcb_readfails++ < 10 && dump_opt['L']) {
1523                         uberblock_t ub;
1524                         vdev_uberblock_load(NULL, spa->spa_root_vdev, &ub);
1525                         if (ub.ub_txg != 0)
1526                                 spa->spa_ubsync = ub;
1527                         error = EAGAIN;
1528                 } else {
1529                         zcb->zcb_haderrors = 1;
1530                         zcb->zcb_errors[bc->bc_errno]++;
1531                         error = ERESTART;
1532                 }
1533
1534                 if (dump_opt['b'] >= 3 || (dump_opt['b'] >= 2 && bc->bc_errno))
1535                         sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1536                 else
1537                         blkbuf[0] = '\0';
1538
1539                 if (!dump_opt['S']) {
1540                         (void) printf("zdb_blkptr_cb: Got error %d reading "
1541                             "<%llu, %llu, %lld, %llx> %s -- %s\n",
1542                             bc->bc_errno,
1543                             (u_longlong_t)zb->zb_objset,
1544                             (u_longlong_t)zb->zb_object,
1545                             (u_longlong_t)zb->zb_level,
1546                             (u_longlong_t)zb->zb_blkid,
1547                             blkbuf,
1548                             error == EAGAIN ? "retrying" : "skipping");
1549                 }
1550
1551                 return (error);
1552         }
1553
1554         zcb->zcb_readfails = 0;
1555
1556         if (dump_opt['b'] >= 4) {
1557                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1558                 (void) printf("objset %llu object %llu offset 0x%llx %s\n",
1559                     (u_longlong_t)zb->zb_objset,
1560                     (u_longlong_t)zb->zb_object,
1561                     (u_longlong_t)blkid2offset(bc->bc_dnode,
1562                     zb->zb_level, zb->zb_blkid), blkbuf);
1563         }
1564
1565         return (0);
1566 }
1567
1568 static int
1569 dump_block_stats(spa_t *spa)
1570 {
1571         traverse_handle_t *th;
1572         zdb_cb_t zcb = { 0 };
1573         traverse_blk_cache_t dummy_cache = { 0 };
1574         zdb_blkstats_t *zb, *tzb;
1575         uint64_t alloc, space, logalloc;
1576         vdev_t *rvd = spa->spa_root_vdev;
1577         int leaks = 0;
1578         int advance = zdb_advance;
1579         int c, e, flags;
1580
1581         zcb.zcb_cache = &dummy_cache;
1582
1583         if (dump_opt['c'] || dump_opt['S'])
1584                 advance |= ADVANCE_DATA;
1585
1586         advance |= ADVANCE_PRUNE | ADVANCE_ZIL;
1587
1588         if (!dump_opt['S']) {
1589                 (void) printf("\nTraversing all blocks to %sverify"
1590                     " nothing leaked ...\n",
1591                     dump_opt['c'] ? "verify checksums and " : "");
1592         }
1593
1594         /*
1595          * Load all space maps as SM_ALLOC maps, then traverse the pool
1596          * claiming each block we discover.  If the pool is perfectly
1597          * consistent, the space maps will be empty when we're done.
1598          * Anything left over is a leak; any block we can't claim (because
1599          * it's not part of any space map) is a double allocation,
1600          * reference to a freed block, or an unclaimed log block.
1601          */
1602         if (!dump_opt['L'])
1603                 zdb_leak_init(spa);
1604
1605         /*
1606          * If there's a deferred-free bplist, process that first.
1607          */
1608         if (spa->spa_sync_bplist_obj != 0) {
1609                 bplist_t *bpl = &spa->spa_sync_bplist;
1610                 blkptr_t blk;
1611                 uint64_t itor = 0;
1612
1613                 VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset,
1614                     spa->spa_sync_bplist_obj));
1615
1616                 while (bplist_iterate(bpl, &itor, &blk) == 0) {
1617                         if (dump_opt['b'] >= 4) {
1618                                 char blkbuf[BP_SPRINTF_LEN];
1619                                 sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk);
1620                                 (void) printf("[%s] %s\n",
1621                                     "deferred free", blkbuf);
1622                         }
1623                         zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED);
1624                 }
1625
1626                 bplist_close(bpl);
1627         }
1628
1629         /*
1630          * Now traverse the pool.  If we're reading all data to verify
1631          * checksums, do a scrubbing read so that we validate all copies.
1632          */
1633         flags = ZIO_FLAG_CANFAIL;
1634         if (advance & ADVANCE_DATA)
1635                 flags |= ZIO_FLAG_SCRUB;
1636         th = traverse_init(spa, zdb_blkptr_cb, &zcb, advance, flags);
1637         th->th_noread = zdb_noread;
1638
1639         traverse_add_pool(th, 0, spa_first_txg(spa) + TXG_CONCURRENT_STATES);
1640
1641         while (traverse_more(th) == EAGAIN)
1642                 continue;
1643
1644         traverse_fini(th);
1645
1646         if (zcb.zcb_haderrors && !dump_opt['S']) {
1647                 (void) printf("\nError counts:\n\n");
1648                 (void) printf("\t%5s  %s\n", "errno", "count");
1649                 for (e = 0; e < 256; e++) {
1650                         if (zcb.zcb_errors[e] != 0) {
1651                                 (void) printf("\t%5d  %llu\n",
1652                                     e, (u_longlong_t)zcb.zcb_errors[e]);
1653                         }
1654                 }
1655         }
1656
1657         /*
1658          * Report any leaked segments.
1659          */
1660         if (!dump_opt['L'])
1661                 zdb_leak_fini(spa);
1662
1663         /*
1664          * If we're interested in printing out the blkptr signatures,
1665          * return now as we don't print out anything else (including
1666          * errors and leaks).
1667          */
1668         if (dump_opt['S'])
1669                 return (zcb.zcb_haderrors ? 3 : 0);
1670
1671         if (dump_opt['L'])
1672                 (void) printf("\n\n *** Live pool traversal; "
1673                     "block counts are only approximate ***\n\n");
1674
1675         alloc = spa_get_alloc(spa);
1676         space = spa_get_space(spa);
1677
1678         /*
1679          * Log blocks allocated from a separate log device don't count
1680          * as part of the normal pool space; factor them in here.
1681          */
1682         logalloc = 0;
1683
1684         for (c = 0; c < rvd->vdev_children; c++)
1685                 if (rvd->vdev_child[c]->vdev_islog)
1686                         logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc;
1687
1688         tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL];
1689
1690         if (tzb->zb_asize == alloc + logalloc) {
1691                 (void) printf("\n\tNo leaks (block sum matches space"
1692                     " maps exactly)\n");
1693         } else {
1694                 (void) printf("block traversal size %llu != alloc %llu "
1695                     "(leaked %lld)\n",
1696                     (u_longlong_t)tzb->zb_asize,
1697                     (u_longlong_t)alloc + logalloc,
1698                     (u_longlong_t)(alloc + logalloc - tzb->zb_asize));
1699                 leaks = 1;
1700         }
1701
1702         if (tzb->zb_count == 0)
1703                 return (2);
1704
1705         (void) printf("\n");
1706         (void) printf("\tbp count:      %10llu\n",
1707             (u_longlong_t)tzb->zb_count);
1708         (void) printf("\tbp logical:    %10llu\t avg: %6llu\n",
1709             (u_longlong_t)tzb->zb_lsize,
1710             (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
1711         (void) printf("\tbp physical:   %10llu\t avg:"
1712             " %6llu\tcompression: %6.2f\n",
1713             (u_longlong_t)tzb->zb_psize,
1714             (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
1715             (double)tzb->zb_lsize / tzb->zb_psize);
1716         (void) printf("\tbp allocated:  %10llu\t avg:"
1717             " %6llu\tcompression: %6.2f\n",
1718             (u_longlong_t)tzb->zb_asize,
1719             (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
1720             (double)tzb->zb_lsize / tzb->zb_asize);
1721         (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n",
1722             (u_longlong_t)alloc, 100.0 * alloc / space);
1723
1724         if (dump_opt['b'] >= 2) {
1725                 int l, t, level;
1726                 (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
1727                     "\t  avg\t comp\t%%Total\tType\n");
1728
1729                 for (t = 0; t <= DMU_OT_NUMTYPES; t++) {
1730                         char csize[6], lsize[6], psize[6], asize[6], avg[6];
1731                         char *typename;
1732
1733                         typename = t == DMU_OT_DEFERRED ? "deferred free" :
1734                             t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name;
1735
1736                         if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
1737                                 (void) printf("%6s\t%5s\t%5s\t%5s"
1738                                     "\t%5s\t%5s\t%6s\t%s\n",
1739                                     "-",
1740                                     "-",
1741                                     "-",
1742                                     "-",
1743                                     "-",
1744                                     "-",
1745                                     "-",
1746                                     typename);
1747                                 continue;
1748                         }
1749
1750                         for (l = ZB_TOTAL - 1; l >= -1; l--) {
1751                                 level = (l == -1 ? ZB_TOTAL : l);
1752                                 zb = &zcb.zcb_type[level][t];
1753
1754                                 if (zb->zb_asize == 0)
1755                                         continue;
1756
1757                                 if (dump_opt['b'] < 3 && level != ZB_TOTAL)
1758                                         continue;
1759
1760                                 if (level == 0 && zb->zb_asize ==
1761                                     zcb.zcb_type[ZB_TOTAL][t].zb_asize)
1762                                         continue;
1763
1764                                 nicenum(zb->zb_count, csize);
1765                                 nicenum(zb->zb_lsize, lsize);
1766                                 nicenum(zb->zb_psize, psize);
1767                                 nicenum(zb->zb_asize, asize);
1768                                 nicenum(zb->zb_asize / zb->zb_count, avg);
1769
1770                                 (void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
1771                                     "\t%5.2f\t%6.2f\t",
1772                                     csize, lsize, psize, asize, avg,
1773                                     (double)zb->zb_lsize / zb->zb_psize,
1774                                     100.0 * zb->zb_asize / tzb->zb_asize);
1775
1776                                 if (level == ZB_TOTAL)
1777                                         (void) printf("%s\n", typename);
1778                                 else
1779                                         (void) printf("    L%d %s\n",
1780                                             level, typename);
1781                         }
1782                 }
1783         }
1784
1785         (void) printf("\n");
1786
1787         if (leaks)
1788                 return (2);
1789
1790         if (zcb.zcb_haderrors)
1791                 return (3);
1792
1793         return (0);
1794 }
1795
1796 static void
1797 dump_zpool(spa_t *spa)
1798 {
1799         dsl_pool_t *dp = spa_get_dsl(spa);
1800         int rc = 0;
1801
1802         if (dump_opt['u'])
1803                 dump_uberblock(&spa->spa_uberblock);
1804
1805         if (dump_opt['d'] || dump_opt['i']) {
1806                 dump_dir(dp->dp_meta_objset);
1807                 if (dump_opt['d'] >= 3) {
1808                         dump_bplist(dp->dp_meta_objset,
1809                             spa->spa_sync_bplist_obj, "Deferred frees");
1810                         dump_dtl(spa->spa_root_vdev, 0);
1811                         dump_metaslabs(spa);
1812                 }
1813                 (void) dmu_objset_find(spa_name(spa), dump_one_dir, NULL,
1814                     DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
1815         }
1816
1817         if (dump_opt['b'] || dump_opt['c'] || dump_opt['S'])
1818                 rc = dump_block_stats(spa);
1819
1820         if (dump_opt['s'])
1821                 show_pool_stats(spa);
1822
1823         if (rc != 0)
1824                 exit(rc);
1825 }
1826
1827 #define ZDB_FLAG_CHECKSUM       0x0001
1828 #define ZDB_FLAG_DECOMPRESS     0x0002
1829 #define ZDB_FLAG_BSWAP          0x0004
1830 #define ZDB_FLAG_GBH            0x0008
1831 #define ZDB_FLAG_INDIRECT       0x0010
1832 #define ZDB_FLAG_PHYS           0x0020
1833 #define ZDB_FLAG_RAW            0x0040
1834 #define ZDB_FLAG_PRINT_BLKPTR   0x0080
1835
1836 int flagbits[256];
1837
1838 static void
1839 zdb_print_blkptr(blkptr_t *bp, int flags)
1840 {
1841         dva_t *dva = bp->blk_dva;
1842         int d;
1843
1844         if (flags & ZDB_FLAG_BSWAP)
1845                 byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
1846         /*
1847          * Super-ick warning:  This code is also duplicated in
1848          * cmd/mdb/common/modules/zfs/zfs.c .  Yeah, I hate code
1849          * replication, too.
1850          */
1851         for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1852                 (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d,
1853                     (longlong_t)DVA_GET_VDEV(&dva[d]),
1854                     (longlong_t)DVA_GET_OFFSET(&dva[d]));
1855                 (void) printf("\tDVA[%d]:       GANG: %-5s  GRID:  %04llx\t"
1856                     "ASIZE: %llx\n", d,
1857                     DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE",
1858                     (longlong_t)DVA_GET_GRID(&dva[d]),
1859                     (longlong_t)DVA_GET_ASIZE(&dva[d]));
1860                 (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d,
1861                     (u_longlong_t)DVA_GET_VDEV(&dva[d]),
1862                     (longlong_t)DVA_GET_OFFSET(&dva[d]),
1863                     (longlong_t)BP_GET_PSIZE(bp),
1864                     BP_SHOULD_BYTESWAP(bp) ? "e" : "",
1865                     !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ?
1866                     "d" : "",
1867                     DVA_GET_GANG(&dva[d]) ? "g" : "",
1868                     BP_GET_COMPRESS(bp) != 0 ? "d" : "");
1869         }
1870         (void) printf("\tLSIZE:  %-16llx\t\tPSIZE: %llx\n",
1871             (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp));
1872         (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE:  %s\n",
1873             BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG",
1874             dmu_ot[BP_GET_TYPE(bp)].ot_name);
1875         (void) printf("\tBIRTH:  %-16llx   LEVEL: %-2llu\tFILL:  %llx\n",
1876             (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp),
1877             (u_longlong_t)bp->blk_fill);
1878         (void) printf("\tCKFUNC: %-16s\t\tCOMP:  %s\n",
1879             zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1880             zio_compress_table[BP_GET_COMPRESS(bp)].ci_name);
1881         (void) printf("\tCKSUM:  %llx:%llx:%llx:%llx\n",
1882             (u_longlong_t)bp->blk_cksum.zc_word[0],
1883             (u_longlong_t)bp->blk_cksum.zc_word[1],
1884             (u_longlong_t)bp->blk_cksum.zc_word[2],
1885             (u_longlong_t)bp->blk_cksum.zc_word[3]);
1886 }
1887
1888 static void
1889 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
1890 {
1891         int i;
1892
1893         for (i = 0; i < nbps; i++)
1894                 zdb_print_blkptr(&bp[i], flags);
1895 }
1896
1897 static void
1898 zdb_dump_gbh(void *buf, int flags)
1899 {
1900         zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
1901 }
1902
1903 static void
1904 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
1905 {
1906         if (flags & ZDB_FLAG_BSWAP)
1907                 byteswap_uint64_array(buf, size);
1908         (void) write(2, buf, size);
1909 }
1910
1911 static void
1912 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
1913 {
1914         uint64_t *d = (uint64_t *)buf;
1915         int nwords = size / sizeof (uint64_t);
1916         int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
1917         int i, j;
1918         char *hdr, *c;
1919
1920
1921         if (do_bswap)
1922                 hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
1923         else
1924                 hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
1925
1926         (void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
1927
1928         for (i = 0; i < nwords; i += 2) {
1929                 (void) printf("%06llx:  %016llx  %016llx  ",
1930                     (u_longlong_t)(i * sizeof (uint64_t)),
1931                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
1932                     (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
1933
1934                 c = (char *)&d[i];
1935                 for (j = 0; j < 2 * sizeof (uint64_t); j++)
1936                         (void) printf("%c", isprint(c[j]) ? c[j] : '.');
1937                 (void) printf("\n");
1938         }
1939 }
1940
1941 /*
1942  * There are two acceptable formats:
1943  *      leaf_name         - For example: c1t0d0 or /tmp/ztest.0a
1944  *      child[.child]*    - For example: 0.1.1
1945  *
1946  * The second form can be used to specify arbitrary vdevs anywhere
1947  * in the heirarchy.  For example, in a pool with a mirror of
1948  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
1949  */
1950 static vdev_t *
1951 zdb_vdev_lookup(vdev_t *vdev, char *path)
1952 {
1953         char *s, *p, *q;
1954         int i;
1955
1956         if (vdev == NULL)
1957                 return (NULL);
1958
1959         /* First, assume the x.x.x.x format */
1960         i = (int)strtoul(path, &s, 10);
1961         if (s == path || (s && *s != '.' && *s != '\0'))
1962                 goto name;
1963         if (i < 0 || i >= vdev->vdev_children)
1964                 return (NULL);
1965
1966         vdev = vdev->vdev_child[i];
1967         if (*s == '\0')
1968                 return (vdev);
1969         return (zdb_vdev_lookup(vdev, s+1));
1970
1971 name:
1972         for (i = 0; i < vdev->vdev_children; i++) {
1973                 vdev_t *vc = vdev->vdev_child[i];
1974
1975                 if (vc->vdev_path == NULL) {
1976                         vc = zdb_vdev_lookup(vc, path);
1977                         if (vc == NULL)
1978                                 continue;
1979                         else
1980                                 return (vc);
1981                 }
1982
1983                 p = strrchr(vc->vdev_path, '/');
1984                 p = p ? p + 1 : vc->vdev_path;
1985                 q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
1986
1987                 if (strcmp(vc->vdev_path, path) == 0)
1988                         return (vc);
1989                 if (strcmp(p, path) == 0)
1990                         return (vc);
1991                 if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
1992                         return (vc);
1993         }
1994
1995         return (NULL);
1996 }
1997
1998 /*
1999  * Read a block from a pool and print it out.  The syntax of the
2000  * block descriptor is:
2001  *
2002  *      pool:vdev_specifier:offset:size[:flags]
2003  *
2004  *      pool           - The name of the pool you wish to read from
2005  *      vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2006  *      offset         - offset, in hex, in bytes
2007  *      size           - Amount of data to read, in hex, in bytes
2008  *      flags          - A string of characters specifying options
2009  *               b: Decode a blkptr at given offset within block
2010  *              *c: Calculate and display checksums
2011  *              *d: Decompress data before dumping
2012  *               e: Byteswap data before dumping
2013  *              *g: Display data as a gang block header
2014  *              *i: Display as an indirect block
2015  *               p: Do I/O to physical offset
2016  *               r: Dump raw data to stdout
2017  *
2018  *              * = not yet implemented
2019  */
2020 static void
2021 zdb_read_block(char *thing, spa_t **spap)
2022 {
2023         spa_t *spa = *spap;
2024         int flags = 0;
2025         uint64_t offset = 0, size = 0, blkptr_offset = 0;
2026         zio_t *zio;
2027         vdev_t *vd;
2028         void *buf;
2029         char *s, *p, *dup, *pool, *vdev, *flagstr;
2030         int i, error, zio_flags;
2031
2032         dup = strdup(thing);
2033         s = strtok(dup, ":");
2034         pool = s ? s : "";
2035         s = strtok(NULL, ":");
2036         vdev = s ? s : "";
2037         s = strtok(NULL, ":");
2038         offset = strtoull(s ? s : "", NULL, 16);
2039         s = strtok(NULL, ":");
2040         size = strtoull(s ? s : "", NULL, 16);
2041         s = strtok(NULL, ":");
2042         flagstr = s ? s : "";
2043
2044         s = NULL;
2045         if (size == 0)
2046                 s = "size must not be zero";
2047         if (!IS_P2ALIGNED(size, DEV_BSIZE))
2048                 s = "size must be a multiple of sector size";
2049         if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2050                 s = "offset must be a multiple of sector size";
2051         if (s) {
2052                 (void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2053                 free(dup);
2054                 return;
2055         }
2056
2057         for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2058                 for (i = 0; flagstr[i]; i++) {
2059                         int bit = flagbits[(uchar_t)flagstr[i]];
2060
2061                         if (bit == 0) {
2062                                 (void) printf("***Invalid flag: %c\n",
2063                                     flagstr[i]);
2064                                 continue;
2065                         }
2066                         flags |= bit;
2067
2068                         /* If it's not something with an argument, keep going */
2069                         if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS |
2070                             ZDB_FLAG_PRINT_BLKPTR)) == 0)
2071                                 continue;
2072
2073                         p = &flagstr[i + 1];
2074                         if (bit == ZDB_FLAG_PRINT_BLKPTR)
2075                                 blkptr_offset = strtoull(p, &p, 16);
2076                         if (*p != ':' && *p != '\0') {
2077                                 (void) printf("***Invalid flag arg: '%s'\n", s);
2078                                 free(dup);
2079                                 return;
2080                         }
2081                 }
2082         }
2083
2084         if (spa == NULL || strcmp(spa_name(spa), pool) != 0) {
2085                 if (spa)
2086                         spa_close(spa, (void *)zdb_read_block);
2087                 error = spa_open(pool, spap, (void *)zdb_read_block);
2088                 if (error)
2089                         fatal("Failed to open pool '%s': %s",
2090                             pool, strerror(error));
2091                 spa = *spap;
2092         }
2093
2094         vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2095         if (vd == NULL) {
2096                 (void) printf("***Invalid vdev: %s\n", vdev);
2097                 free(dup);
2098                 return;
2099         } else {
2100                 if (vd->vdev_path)
2101                         (void) printf("Found vdev: %s\n", vd->vdev_path);
2102                 else
2103                         (void) printf("Found vdev type: %s\n",
2104                             vd->vdev_ops->vdev_op_type);
2105         }
2106
2107         buf = umem_alloc(size, UMEM_NOFAIL);
2108
2109         zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2110             ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY;
2111
2112         spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2113         zio = zio_root(spa, NULL, NULL, 0);
2114         /* XXX todo - cons up a BP so RAID-Z will be happy */
2115         zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size,
2116             ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL));
2117         error = zio_wait(zio);
2118         spa_config_exit(spa, SCL_STATE, FTAG);
2119
2120         if (error) {
2121                 (void) printf("Read of %s failed, error: %d\n", thing, error);
2122                 goto out;
2123         }
2124
2125         if (flags & ZDB_FLAG_PRINT_BLKPTR)
2126                 zdb_print_blkptr((blkptr_t *)(void *)
2127                     ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2128         else if (flags & ZDB_FLAG_RAW)
2129                 zdb_dump_block_raw(buf, size, flags);
2130         else if (flags & ZDB_FLAG_INDIRECT)
2131                 zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2132                     flags);
2133         else if (flags & ZDB_FLAG_GBH)
2134                 zdb_dump_gbh(buf, flags);
2135         else
2136                 zdb_dump_block(thing, buf, size, flags);
2137
2138 out:
2139         umem_free(buf, size);
2140         free(dup);
2141 }
2142
2143 static boolean_t
2144 nvlist_string_match(nvlist_t *config, char *name, char *tgt)
2145 {
2146         char *s;
2147
2148         if (nvlist_lookup_string(config, name, &s) != 0)
2149                 return (B_FALSE);
2150
2151         return (strcmp(s, tgt) == 0);
2152 }
2153
2154 static boolean_t
2155 nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt)
2156 {
2157         uint64_t val;
2158
2159         if (nvlist_lookup_uint64(config, name, &val) != 0)
2160                 return (B_FALSE);
2161
2162         return (val == tgt);
2163 }
2164
2165 static boolean_t
2166 vdev_child_guid_match(nvlist_t *vdev, uint64_t guid)
2167 {
2168         nvlist_t **child;
2169         uint_t c, children;
2170
2171         verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2172             &child, &children) == 0);
2173         for (c = 0; c < children; ++c)
2174                 if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid))
2175                         return (B_TRUE);
2176         return (B_FALSE);
2177 }
2178
2179 static boolean_t
2180 vdev_child_string_match(nvlist_t *vdev, char *tgt)
2181 {
2182         nvlist_t **child;
2183         uint_t c, children;
2184
2185         verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2186             &child, &children) == 0);
2187         for (c = 0; c < children; ++c) {
2188                 if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) ||
2189                     nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt))
2190                         return (B_TRUE);
2191         }
2192         return (B_FALSE);
2193 }
2194
2195 static boolean_t
2196 vdev_guid_match(nvlist_t *config, uint64_t guid)
2197 {
2198         nvlist_t *nvroot;
2199
2200         verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2201             &nvroot) == 0);
2202
2203         return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) ||
2204             vdev_child_guid_match(nvroot, guid));
2205 }
2206
2207 static boolean_t
2208 vdev_string_match(nvlist_t *config, char *tgt)
2209 {
2210         nvlist_t *nvroot;
2211
2212         verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2213             &nvroot) == 0);
2214
2215         return (vdev_child_string_match(nvroot, tgt));
2216 }
2217
2218 static boolean_t
2219 pool_match(nvlist_t *config, char *tgt)
2220 {
2221         uint64_t guid = strtoull(tgt, NULL, 0);
2222
2223         if (guid != 0) {
2224                 return (
2225                     nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) ||
2226                     vdev_guid_match(config, guid));
2227         } else {
2228                 return (
2229                     nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) ||
2230                     vdev_string_match(config, tgt));
2231         }
2232 }
2233
2234 static int
2235 find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir)
2236 {
2237         nvlist_t *pools;
2238         int error = ENOENT;
2239         nvlist_t *match = NULL;
2240
2241         if (vdev_dir != NULL)
2242                 pools = zpool_find_import_activeok(g_zfs, 1, &vdev_dir);
2243         else
2244                 pools = zpool_find_import_activeok(g_zfs, 0, NULL);
2245
2246         if (pools != NULL) {
2247                 nvpair_t *elem = NULL;
2248
2249                 while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2250                         verify(nvpair_value_nvlist(elem, configp) == 0);
2251                         if (pool_match(*configp, pool_id)) {
2252                                 if (match != NULL) {
2253                                         (void) fatal(
2254                                             "More than one matching pool - "
2255                                             "specify guid/devid/device path.");
2256                                 } else {
2257                                         match = *configp;
2258                                         error = 0;
2259                                 }
2260                         }
2261                 }
2262         }
2263
2264         *configp = error ? NULL : match;
2265
2266         return (error);
2267 }
2268
2269 int
2270 main(int argc, char **argv)
2271 {
2272         int i, c;
2273         struct rlimit rl = { 1024, 1024 };
2274         spa_t *spa;
2275         objset_t *os = NULL;
2276         char *endstr;
2277         int dump_all = 1;
2278         int verbose = 0;
2279         int error;
2280         int flag, set;
2281         int exported = 0;
2282         char *vdev_dir = NULL;
2283
2284         (void) setrlimit(RLIMIT_NOFILE, &rl);
2285         (void) enable_extended_FILE_stdio(-1, -1);
2286
2287         dprintf_setup(&argc, argv);
2288
2289         while ((c = getopt(argc, argv, "udibcsvCLO:B:S:U:lRep:")) != -1) {
2290                 switch (c) {
2291                 case 'u':
2292                 case 'd':
2293                 case 'i':
2294                 case 'b':
2295                 case 'c':
2296                 case 's':
2297                 case 'C':
2298                 case 'l':
2299                 case 'R':
2300                         dump_opt[c]++;
2301                         dump_all = 0;
2302                         break;
2303                 case 'L':
2304                         dump_opt[c]++;
2305                         break;
2306                 case 'O':
2307                         endstr = optarg;
2308                         if (endstr[0] == '!') {
2309                                 endstr++;
2310                                 set = 0;
2311                         } else {
2312                                 set = 1;
2313                         }
2314                         if (strcmp(endstr, "post") == 0) {
2315                                 flag = ADVANCE_PRE;
2316                                 set = !set;
2317                         } else if (strcmp(endstr, "pre") == 0) {
2318                                 flag = ADVANCE_PRE;
2319                         } else if (strcmp(endstr, "prune") == 0) {
2320                                 flag = ADVANCE_PRUNE;
2321                         } else if (strcmp(endstr, "data") == 0) {
2322                                 flag = ADVANCE_DATA;
2323                         } else if (strcmp(endstr, "holes") == 0) {
2324                                 flag = ADVANCE_HOLES;
2325                         } else {
2326                                 usage();
2327                         }
2328                         if (set)
2329                                 zdb_advance |= flag;
2330                         else
2331                                 zdb_advance &= ~flag;
2332                         break;
2333                 case 'B':
2334                         endstr = optarg - 1;
2335                         zdb_noread.zb_objset = strtoull(endstr + 1, &endstr, 0);
2336                         zdb_noread.zb_object = strtoull(endstr + 1, &endstr, 0);
2337                         zdb_noread.zb_level = strtol(endstr + 1, &endstr, 0);
2338                         zdb_noread.zb_blkid = strtoull(endstr + 1, &endstr, 16);
2339                         (void) printf("simulating bad block "
2340                             "<%llu, %llu, %lld, %llx>\n",
2341                             (u_longlong_t)zdb_noread.zb_objset,
2342                             (u_longlong_t)zdb_noread.zb_object,
2343                             (u_longlong_t)zdb_noread.zb_level,
2344                             (u_longlong_t)zdb_noread.zb_blkid);
2345                         break;
2346                 case 'v':
2347                         verbose++;
2348                         break;
2349                 case 'U':
2350                         spa_config_path = optarg;
2351                         break;
2352                 case 'e':
2353                         exported = 1;
2354                         break;
2355                 case 'p':
2356                         vdev_dir = optarg;
2357                         break;
2358                 case 'S':
2359                         dump_opt[c]++;
2360                         dump_all = 0;
2361                         zdb_sig_user_data = (strncmp(optarg, "user:", 5) == 0);
2362                         if (!zdb_sig_user_data && strncmp(optarg, "all:", 4))
2363                                 usage();
2364                         endstr = strchr(optarg, ':') + 1;
2365                         if (strcmp(endstr, "fletcher2") == 0)
2366                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2367                         else if (strcmp(endstr, "fletcher4") == 0)
2368                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_4;
2369                         else if (strcmp(endstr, "sha256") == 0)
2370                                 zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
2371                         else if (strcmp(endstr, "all") == 0)
2372                                 zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2373                         else
2374                                 usage();
2375                         break;
2376                 default:
2377                         usage();
2378                         break;
2379                 }
2380         }
2381
2382         if (vdev_dir != NULL && exported == 0)
2383                 (void) fatal("-p option requires use of -e\n");
2384
2385         kernel_init(FREAD);
2386         g_zfs = libzfs_init();
2387         ASSERT(g_zfs != NULL);
2388
2389         /*
2390          * Disable vdev caching.  If we don't do this, live pool traversal
2391          * won't make progress because it will never see disk updates.
2392          */
2393         zfs_vdev_cache_size = 0;
2394
2395         for (c = 0; c < 256; c++) {
2396                 if (dump_all && c != 'L' && c != 'l' && c != 'R')
2397                         dump_opt[c] = 1;
2398                 if (dump_opt[c])
2399                         dump_opt[c] += verbose;
2400         }
2401
2402         argc -= optind;
2403         argv += optind;
2404
2405         if (argc < 1) {
2406                 if (dump_opt['C']) {
2407                         dump_cachefile(spa_config_path);
2408                         return (0);
2409                 }
2410                 usage();
2411         }
2412
2413         if (dump_opt['l']) {
2414                 dump_label(argv[0]);
2415                 return (0);
2416         }
2417
2418         if (dump_opt['R']) {
2419                 flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
2420                 flagbits['c'] = ZDB_FLAG_CHECKSUM;
2421                 flagbits['d'] = ZDB_FLAG_DECOMPRESS;
2422                 flagbits['e'] = ZDB_FLAG_BSWAP;
2423                 flagbits['g'] = ZDB_FLAG_GBH;
2424                 flagbits['i'] = ZDB_FLAG_INDIRECT;
2425                 flagbits['p'] = ZDB_FLAG_PHYS;
2426                 flagbits['r'] = ZDB_FLAG_RAW;
2427
2428                 spa = NULL;
2429                 while (argv[0]) {
2430                         zdb_read_block(argv[0], &spa);
2431                         argv++;
2432                         argc--;
2433                 }
2434                 if (spa)
2435                         spa_close(spa, (void *)zdb_read_block);
2436                 return (0);
2437         }
2438
2439         if (dump_opt['C'])
2440                 dump_config(argv[0]);
2441
2442         error = 0;
2443         if (exported) {
2444                 /*
2445                  * Check to see if the name refers to an exported zpool
2446                  */
2447                 char *slash;
2448                 nvlist_t *exported_conf = NULL;
2449
2450                 if ((slash = strchr(argv[0], '/')) != NULL)
2451                         *slash = '\0';
2452
2453                 error = find_exported_zpool(argv[0], &exported_conf, vdev_dir);
2454                 if (error == 0) {
2455                         nvlist_t *nvl = NULL;
2456
2457                         if (vdev_dir != NULL) {
2458                                 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
2459                                         error = ENOMEM;
2460                                 else if (nvlist_add_string(nvl,
2461                                     zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
2462                                     vdev_dir) != 0)
2463                                         error = ENOMEM;
2464                         }
2465
2466                         if (error == 0)
2467                                 error = spa_import_faulted(argv[0],
2468                                     exported_conf, nvl);
2469
2470                         nvlist_free(nvl);
2471                 }
2472
2473                 if (slash != NULL)
2474                         *slash = '/';
2475         }
2476
2477         if (error == 0) {
2478                 if (strchr(argv[0], '/') != NULL) {
2479                         error = dmu_objset_open(argv[0], DMU_OST_ANY,
2480                             DS_MODE_USER | DS_MODE_READONLY, &os);
2481                 } else {
2482                         error = spa_open(argv[0], &spa, FTAG);
2483                 }
2484         }
2485
2486         if (error)
2487                 fatal("can't open %s: %s", argv[0], strerror(error));
2488
2489         argv++;
2490         if (--argc > 0) {
2491                 zopt_objects = argc;
2492                 zopt_object = calloc(zopt_objects, sizeof (uint64_t));
2493                 for (i = 0; i < zopt_objects; i++) {
2494                         errno = 0;
2495                         zopt_object[i] = strtoull(argv[i], NULL, 0);
2496                         if (zopt_object[i] == 0 && errno != 0)
2497                                 fatal("bad object number %s: %s",
2498                                     argv[i], strerror(errno));
2499                 }
2500         }
2501
2502         if (os != NULL) {
2503                 dump_dir(os);
2504                 dmu_objset_close(os);
2505         } else {
2506                 dump_zpool(spa);
2507                 spa_close(spa, FTAG);
2508         }
2509
2510         fuid_table_destroy();
2511
2512         libzfs_fini(g_zfs);
2513         kernel_fini();
2514
2515         return (0);
2516 }