cddl/contrib/opensolaris/cmd/zstreamdump/zstreamdump.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 /*
  23  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*
  28  * Copyright (c) 2013, 2014 by Delphix. All rights reserved.
  29  * Copyright (c) 2014 Integros [integros.com]
  30  */
  31
  32 #include <ctype.h>
  33 #include <libnvpair.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <strings.h>
  37 #include <unistd.h>
  38 #include <stddef.h>
  39
  40 #include <sys/dmu.h>
  41 #include <sys/zfs_ioctl.h>
  42 #include <zfs_fletcher.h>
  43
  44 /*
  45  * If dump mode is enabled, the number of bytes to print per line
  46  */
  47 #define BYTES_PER_LINE  16
  48 /*
  49  * If dump mode is enabled, the number of bytes to group together, separated
  50  * by newlines or spaces
  51  */
  52 #define DUMP_GROUPING   4
  53
  54 uint64_t total_write_size = 0;
  55 uint64_t total_stream_len = 0;
  56 FILE *send_stream = 0;
  57 boolean_t do_byteswap = B_FALSE;
  58 boolean_t do_cksum = B_TRUE;
  59
  60 static void
  61 usage(void)
  62 {
  63         (void) fprintf(stderr, "usage: zstreamdump [-v] [-C] [-d] < file\n");
  64         (void) fprintf(stderr, "\t -v -- verbose\n");
  65         (void) fprintf(stderr, "\t -C -- suppress checksum verification\n");
  66         (void) fprintf(stderr, "\t -d -- dump contents of blocks modified, "
  67             "implies verbose\n");
  68         exit(1);
  69 }
  70
  71 static void *
  72 safe_malloc(size_t size)
  73 {
  74         void *rv = malloc(size);
  75         if (rv == NULL) {
  76                 (void) fprintf(stderr, "ERROR; failed to allocate %zu bytes\n",
  77                     size);
  78                 abort();
  79         }
  80         return (rv);
  81 }
  82
  83 /*
  84  * ssread - send stream read.
  85  *
  86  * Read while computing incremental checksum
  87  */
  88 static size_t
  89 ssread(void *buf, size_t len, zio_cksum_t *cksum)
  90 {
  91         size_t outlen;
  92
  93         if ((outlen = fread(buf, len, 1, send_stream)) == 0)
  94                 return (0);
  95
  96         if (do_cksum) {
  97                 if (do_byteswap)
  98                         fletcher_4_incremental_byteswap(buf, len, cksum);
  99                 else
 100                         fletcher_4_incremental_native(buf, len, cksum);
 101         }
 102         total_stream_len += len;
 103         return (outlen);
 104 }
 105
 106 static size_t
 107 read_hdr(dmu_replay_record_t *drr, zio_cksum_t *cksum)
 108 {
 109         ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum),
 110             ==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t));
 111         size_t r = ssread(drr, sizeof (*drr) - sizeof (zio_cksum_t), cksum);
 112         if (r == 0)
 113                 return (0);
 114         zio_cksum_t saved_cksum = *cksum;
 115         r = ssread(&drr->drr_u.drr_checksum.drr_checksum,
 116             sizeof (zio_cksum_t), cksum);
 117         if (r == 0)
 118                 return (0);
 119         if (!ZIO_CHECKSUM_IS_ZERO(&drr->drr_u.drr_checksum.drr_checksum) &&
 120             !ZIO_CHECKSUM_EQUAL(saved_cksum,
 121             drr->drr_u.drr_checksum.drr_checksum)) {
 122                 fprintf(stderr, "invalid checksum\n");
 123                 (void) printf("Incorrect checksum in record header.\n");
 124                 (void) printf("Expected checksum = %llx/%llx/%llx/%llx\n",
 125                     saved_cksum.zc_word[0],
 126                     saved_cksum.zc_word[1],
 127                     saved_cksum.zc_word[2],
 128                     saved_cksum.zc_word[3]);
 129                 return (0);
 130         }
 131         return (sizeof (*drr));
 132 }
 133
 134 /*
 135  * Print part of a block in ASCII characters
 136  */
 137 static void
 138 print_ascii_block(char *subbuf, int length)
 139 {
 140         int i;
 141
 142         for (i = 0; i < length; i++) {
 143                 char char_print = isprint(subbuf[i]) ? subbuf[i] : '.';
 144                 if (i != 0 && i % DUMP_GROUPING == 0) {
 145                         (void) printf(" ");
 146                 }
 147                 (void) printf("%c", char_print);
 148         }
 149         (void) printf("\n");
 150 }
 151
 152 /*
 153  * print_block - Dump the contents of a modified block to STDOUT
 154  *
 155  * Assume that buf has capacity evenly divisible by BYTES_PER_LINE
 156  */
 157 static void
 158 print_block(char *buf, int length)
 159 {
 160         int i;
 161         /*
 162          * Start printing ASCII characters at a constant offset, after
 163          * the hex prints. Leave 3 characters per byte on a line (2 digit
 164          * hex number plus 1 space) plus spaces between characters and
 165          * groupings.
 166          */
 167         int ascii_start = BYTES_PER_LINE * 3 +
 168             BYTES_PER_LINE / DUMP_GROUPING + 2;
 169
 170         for (i = 0; i < length; i += BYTES_PER_LINE) {
 171                 int j;
 172                 int this_line_length = MIN(BYTES_PER_LINE, length - i);
 173                 int print_offset = 0;
 174
 175                 for (j = 0; j < this_line_length; j++) {
 176                         int buf_offset = i + j;
 177
 178                         /*
 179                          * Separate every DUMP_GROUPING bytes by a space.
 180                          */
 181                         if (buf_offset % DUMP_GROUPING == 0) {
 182                                 print_offset += printf(" ");
 183                         }
 184
 185                         /*
 186                          * Print the two-digit hex value for this byte.
 187                          */
 188                         unsigned char hex_print = buf[buf_offset];
 189                         print_offset += printf("%02x ", hex_print);
 190                 }
 191
 192                 (void) printf("%*s", ascii_start - print_offset, " ");
 193
 194                 print_ascii_block(buf + i, this_line_length);
 195         }
 196 }
 197
 198 int
 199 main(int argc, char *argv[])
 200 {
 201         char *buf = safe_malloc(SPA_MAXBLOCKSIZE);
 202         uint64_t drr_record_count[DRR_NUMTYPES] = { 0 };
 203         uint64_t total_records = 0;
 204         dmu_replay_record_t thedrr;
 205         dmu_replay_record_t *drr = &thedrr;
 206         struct drr_begin *drrb = &thedrr.drr_u.drr_begin;
 207         struct drr_end *drre = &thedrr.drr_u.drr_end;
 208         struct drr_object *drro = &thedrr.drr_u.drr_object;
 209         struct drr_freeobjects *drrfo = &thedrr.drr_u.drr_freeobjects;
 210         struct drr_write *drrw = &thedrr.drr_u.drr_write;
 211         struct drr_write_byref *drrwbr = &thedrr.drr_u.drr_write_byref;
 212         struct drr_free *drrf = &thedrr.drr_u.drr_free;
 213         struct drr_spill *drrs = &thedrr.drr_u.drr_spill;
 214         struct drr_write_embedded *drrwe = &thedrr.drr_u.drr_write_embedded;
 215         struct drr_checksum *drrc = &thedrr.drr_u.drr_checksum;
 216         char c;
 217         boolean_t verbose = B_FALSE;
 218         boolean_t very_verbose = B_FALSE;
 219         boolean_t first = B_TRUE;
 220         /*
 221          * dump flag controls whether the contents of any modified data blocks
 222          * are printed to the console during processing of the stream. Warning:
 223          * for large streams, this can obviously lead to massive prints.
 224          */
 225         boolean_t dump = B_FALSE;
 226         int err;
 227         zio_cksum_t zc = { 0 };
 228         zio_cksum_t pcksum = { 0 };
 229
 230         while ((c = getopt(argc, argv, ":vCd")) != -1) {
 231                 switch (c) {
 232                 case 'C':
 233                         do_cksum = B_FALSE;
 234                         break;
 235                 case 'v':
 236                         if (verbose)
 237                                 very_verbose = B_TRUE;
 238                         verbose = B_TRUE;
 239                         break;
 240                 case 'd':
 241                         dump = B_TRUE;
 242                         verbose = B_TRUE;
 243                         very_verbose = B_TRUE;
 244                         break;
 245                 case ':':
 246                         (void) fprintf(stderr,
 247                             "missing argument for '%c' option\n", optopt);
 248                         usage();
 249                         break;
 250                 case '?':
 251                         (void) fprintf(stderr, "invalid option '%c'\n",
 252                             optopt);
 253                         usage();
 254                 }
 255         }
 256
 257         if (isatty(STDIN_FILENO)) {
 258                 (void) fprintf(stderr,
 259                     "Error: Backup stream can not be read "
 260                     "from a terminal.\n"
 261                     "You must redirect standard input.\n");
 262                 exit(1);
 263         }
 264
 265         send_stream = stdin;
 266         pcksum = zc;
 267         while (read_hdr(drr, &zc)) {
 268
 269                 /*
 270                  * If this is the first DMU record being processed, check for
 271                  * the magic bytes and figure out the endian-ness based on them.
 272                  */
 273                 if (first) {
 274                         if (drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) {
 275                                 do_byteswap = B_TRUE;
 276                                 if (do_cksum) {
 277                                         ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
 278                                         /*
 279                                          * recalculate header checksum now
 280                                          * that we know it needs to be
 281                                          * byteswapped.
 282                                          */
 283                                         fletcher_4_incremental_byteswap(drr,
 284                                             sizeof (dmu_replay_record_t), &zc);
 285                                 }
 286                         } else if (drrb->drr_magic != DMU_BACKUP_MAGIC) {
 287                                 (void) fprintf(stderr, "Invalid stream "
 288                                     "(bad magic number)\n");
 289                                 exit(1);
 290                         }
 291                         first = B_FALSE;
 292                 }
 293                 if (do_byteswap) {
 294                         drr->drr_type = BSWAP_32(drr->drr_type);
 295                         drr->drr_payloadlen =
 296                             BSWAP_32(drr->drr_payloadlen);
 297                 }
 298
 299                 /*
 300                  * At this point, the leading fields of the replay record
 301                  * (drr_type and drr_payloadlen) have been byte-swapped if
 302                  * necessary, but the rest of the data structure (the
 303                  * union of type-specific structures) is still in its
 304                  * original state.
 305                  */
 306                 if (drr->drr_type >= DRR_NUMTYPES) {
 307                         (void) printf("INVALID record found: type 0x%x\n",
 308                             drr->drr_type);
 309                         (void) printf("Aborting.\n");
 310                         exit(1);
 311                 }
 312
 313                 drr_record_count[drr->drr_type]++;
 314                 total_records++;
 315
 316                 switch (drr->drr_type) {
 317                 case DRR_BEGIN:
 318                         if (do_byteswap) {
 319                                 drrb->drr_magic = BSWAP_64(drrb->drr_magic);
 320                                 drrb->drr_versioninfo =
 321                                     BSWAP_64(drrb->drr_versioninfo);
 322                                 drrb->drr_creation_time =
 323                                     BSWAP_64(drrb->drr_creation_time);
 324                                 drrb->drr_type = BSWAP_32(drrb->drr_type);
 325                                 drrb->drr_flags = BSWAP_32(drrb->drr_flags);
 326                                 drrb->drr_toguid = BSWAP_64(drrb->drr_toguid);
 327                                 drrb->drr_fromguid =
 328                                     BSWAP_64(drrb->drr_fromguid);
 329                         }
 330
 331                         (void) printf("BEGIN record\n");
 332                         (void) printf("\thdrtype = %lld\n",
 333                             DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo));
 334                         (void) printf("\tfeatures = %llx\n",
 335                             DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo));
 336                         (void) printf("\tmagic = %llx\n",
 337                             (u_longlong_t)drrb->drr_magic);
 338                         (void) printf("\tcreation_time = %llx\n",
 339                             (u_longlong_t)drrb->drr_creation_time);
 340                         (void) printf("\ttype = %u\n", drrb->drr_type);
 341                         (void) printf("\tflags = 0x%x\n", drrb->drr_flags);
 342                         (void) printf("\ttoguid = %llx\n",
 343                             (u_longlong_t)drrb->drr_toguid);
 344                         (void) printf("\tfromguid = %llx\n",
 345                             (u_longlong_t)drrb->drr_fromguid);
 346                         (void) printf("\ttoname = %s\n", drrb->drr_toname);
 347                         if (verbose)
 348                                 (void) printf("\n");
 349
 350                         if (drr->drr_payloadlen != 0) {
 351                                 nvlist_t *nv;
 352                                 int sz = drr->drr_payloadlen;
 353
 354                                 if (sz > SPA_MAXBLOCKSIZE) {
 355                                         free(buf);
 356                                         buf = safe_malloc(sz);
 357                                 }
 358                                 (void) ssread(buf, sz, &zc);
 359                                 if (ferror(send_stream))
 360                                         perror("fread");
 361                                 err = nvlist_unpack(buf, sz, &nv, 0);
 362                                 if (err)
 363                                         perror(strerror(err));
 364                                 nvlist_print(stdout, nv);
 365                                 nvlist_free(nv);
 366                         }
 367                         break;
 368
 369                 case DRR_END:
 370                         if (do_byteswap) {
 371                                 drre->drr_checksum.zc_word[0] =
 372                                     BSWAP_64(drre->drr_checksum.zc_word[0]);
 373                                 drre->drr_checksum.zc_word[1] =
 374                                     BSWAP_64(drre->drr_checksum.zc_word[1]);
 375                                 drre->drr_checksum.zc_word[2] =
 376                                     BSWAP_64(drre->drr_checksum.zc_word[2]);
 377                                 drre->drr_checksum.zc_word[3] =
 378                                     BSWAP_64(drre->drr_checksum.zc_word[3]);
 379                         }
 380                         /*
 381                          * We compare against the *previous* checksum
 382                          * value, because the stored checksum is of
 383                          * everything before the DRR_END record.
 384                          */
 385                         if (do_cksum && !ZIO_CHECKSUM_EQUAL(drre->drr_checksum,
 386                             pcksum)) {
 387                                 (void) printf("Expected checksum differs from "
 388                                     "checksum in stream.\n");
 389                                 (void) printf("Expected checksum = "
 390                                     "%llx/%llx/%llx/%llx\n",
 391                                     pcksum.zc_word[0],
 392                                     pcksum.zc_word[1],
 393                                     pcksum.zc_word[2],
 394                                     pcksum.zc_word[3]);
 395                         }
 396                         (void) printf("END checksum = %llx/%llx/%llx/%llx\n",
 397                             drre->drr_checksum.zc_word[0],
 398                             drre->drr_checksum.zc_word[1],
 399                             drre->drr_checksum.zc_word[2],
 400                             drre->drr_checksum.zc_word[3]);
 401
 402                         ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
 403                         break;
 404
 405                 case DRR_OBJECT:
 406                         if (do_byteswap) {
 407                                 drro->drr_object = BSWAP_64(drro->drr_object);
 408                                 drro->drr_type = BSWAP_32(drro->drr_type);
 409                                 drro->drr_bonustype =
 410                                     BSWAP_32(drro->drr_bonustype);
 411                                 drro->drr_blksz = BSWAP_32(drro->drr_blksz);
 412                                 drro->drr_bonuslen =
 413                                     BSWAP_32(drro->drr_bonuslen);
 414                                 drro->drr_toguid = BSWAP_64(drro->drr_toguid);
 415                         }
 416                         if (verbose) {
 417                                 (void) printf("OBJECT object = %llu type = %u "
 418                                     "bonustype = %u blksz = %u bonuslen = %u\n",
 419                                     (u_longlong_t)drro->drr_object,
 420                                     drro->drr_type,
 421                                     drro->drr_bonustype,
 422                                     drro->drr_blksz,
 423                                     drro->drr_bonuslen);
 424                         }
 425                         if (drro->drr_bonuslen > 0) {
 426                                 (void) ssread(buf,
 427                                     P2ROUNDUP(drro->drr_bonuslen, 8), &zc);
 428                                 if (dump) {
 429                                         print_block(buf,
 430                                             P2ROUNDUP(drro->drr_bonuslen, 8));
 431                                 }
 432                         }
 433                         break;
 434
 435                 case DRR_FREEOBJECTS:
 436                         if (do_byteswap) {
 437                                 drrfo->drr_firstobj =
 438                                     BSWAP_64(drrfo->drr_firstobj);
 439                                 drrfo->drr_numobjs =
 440                                     BSWAP_64(drrfo->drr_numobjs);
 441                                 drrfo->drr_toguid = BSWAP_64(drrfo->drr_toguid);
 442                         }
 443                         if (verbose) {
 444                                 (void) printf("FREEOBJECTS firstobj = %llu "
 445                                     "numobjs = %llu\n",
 446                                     (u_longlong_t)drrfo->drr_firstobj,
 447                                     (u_longlong_t)drrfo->drr_numobjs);
 448                         }
 449                         break;
 450
 451                 case DRR_WRITE:
 452                         if (do_byteswap) {
 453                                 drrw->drr_object = BSWAP_64(drrw->drr_object);
 454                                 drrw->drr_type = BSWAP_32(drrw->drr_type);
 455                                 drrw->drr_offset = BSWAP_64(drrw->drr_offset);
 456                                 drrw->drr_length = BSWAP_64(drrw->drr_length);
 457                                 drrw->drr_toguid = BSWAP_64(drrw->drr_toguid);
 458                                 drrw->drr_key.ddk_prop =
 459                                     BSWAP_64(drrw->drr_key.ddk_prop);
 460                         }
 461                         /*
 462                          * If this is verbose and/or dump output,
 463                          * print info on the modified block
 464                          */
 465                         if (verbose) {
 466                                 (void) printf("WRITE object = %llu type = %u "
 467                                     "checksum type = %u\n"
 468                                     "    offset = %llu length = %llu "
 469                                     "props = %llx\n",
 470                                     (u_longlong_t)drrw->drr_object,
 471                                     drrw->drr_type,
 472                                     drrw->drr_checksumtype,
 473                                     (u_longlong_t)drrw->drr_offset,
 474                                     (u_longlong_t)drrw->drr_length,
 475                                     (u_longlong_t)drrw->drr_key.ddk_prop);
 476                         }
 477                         /*
 478                          * Read the contents of the block in from STDIN to buf
 479                          */
 480                         (void) ssread(buf, drrw->drr_length, &zc);
 481                         /*
 482                          * If in dump mode
 483                          */
 484                         if (dump) {
 485                                 print_block(buf, drrw->drr_length);
 486                         }
 487                         total_write_size += drrw->drr_length;
 488                         break;
 489
 490                 case DRR_WRITE_BYREF:
 491                         if (do_byteswap) {
 492                                 drrwbr->drr_object =
 493                                     BSWAP_64(drrwbr->drr_object);
 494                                 drrwbr->drr_offset =
 495                                     BSWAP_64(drrwbr->drr_offset);
 496                                 drrwbr->drr_length =
 497                                     BSWAP_64(drrwbr->drr_length);
 498                                 drrwbr->drr_toguid =
 499                                     BSWAP_64(drrwbr->drr_toguid);
 500                                 drrwbr->drr_refguid =
 501                                     BSWAP_64(drrwbr->drr_refguid);
 502                                 drrwbr->drr_refobject =
 503                                     BSWAP_64(drrwbr->drr_refobject);
 504                                 drrwbr->drr_refoffset =
 505                                     BSWAP_64(drrwbr->drr_refoffset);
 506                                 drrwbr->drr_key.ddk_prop =
 507                                     BSWAP_64(drrwbr->drr_key.ddk_prop);
 508                         }
 509                         if (verbose) {
 510                                 (void) printf("WRITE_BYREF object = %llu "
 511                                     "checksum type = %u props = %llx\n"
 512                                     "    offset = %llu length = %llu\n"
 513                                     "toguid = %llx refguid = %llx\n"
 514                                     "    refobject = %llu refoffset = %llu\n",
 515                                     (u_longlong_t)drrwbr->drr_object,
 516                                     drrwbr->drr_checksumtype,
 517                                     (u_longlong_t)drrwbr->drr_key.ddk_prop,
 518                                     (u_longlong_t)drrwbr->drr_offset,
 519                                     (u_longlong_t)drrwbr->drr_length,
 520                                     (u_longlong_t)drrwbr->drr_toguid,
 521                                     (u_longlong_t)drrwbr->drr_refguid,
 522                                     (u_longlong_t)drrwbr->drr_refobject,
 523                                     (u_longlong_t)drrwbr->drr_refoffset);
 524                         }
 525                         break;
 526
 527                 case DRR_FREE:
 528                         if (do_byteswap) {
 529                                 drrf->drr_object = BSWAP_64(drrf->drr_object);
 530                                 drrf->drr_offset = BSWAP_64(drrf->drr_offset);
 531                                 drrf->drr_length = BSWAP_64(drrf->drr_length);
 532                         }
 533                         if (verbose) {
 534                                 (void) printf("FREE object = %llu "
 535                                     "offset = %llu length = %lld\n",
 536                                     (u_longlong_t)drrf->drr_object,
 537                                     (u_longlong_t)drrf->drr_offset,
 538                                     (longlong_t)drrf->drr_length);
 539                         }
 540                         break;
 541                 case DRR_SPILL:
 542                         if (do_byteswap) {
 543                                 drrs->drr_object = BSWAP_64(drrs->drr_object);
 544                                 drrs->drr_length = BSWAP_64(drrs->drr_length);
 545                         }
 546                         if (verbose) {
 547                                 (void) printf("SPILL block for object = %llu "
 548                                     "length = %llu\n", drrs->drr_object,
 549                                     drrs->drr_length);
 550                         }
 551                         (void) ssread(buf, drrs->drr_length, &zc);
 552                         if (dump) {
 553                                 print_block(buf, drrs->drr_length);
 554                         }
 555                         break;
 556                 case DRR_WRITE_EMBEDDED:
 557                         if (do_byteswap) {
 558                                 drrwe->drr_object =
 559                                     BSWAP_64(drrwe->drr_object);
 560                                 drrwe->drr_offset =
 561                                     BSWAP_64(drrwe->drr_offset);
 562                                 drrwe->drr_length =
 563                                     BSWAP_64(drrwe->drr_length);
 564                                 drrwe->drr_toguid =
 565                                     BSWAP_64(drrwe->drr_toguid);
 566                                 drrwe->drr_lsize =
 567                                     BSWAP_32(drrwe->drr_lsize);
 568                                 drrwe->drr_psize =
 569                                     BSWAP_32(drrwe->drr_psize);
 570                         }
 571                         if (verbose) {
 572                                 (void) printf("WRITE_EMBEDDED object = %llu "
 573                                     "offset = %llu length = %llu\n"
 574                                     "    toguid = %llx comp = %u etype = %u "
 575                                     "lsize = %u psize = %u\n",
 576                                     (u_longlong_t)drrwe->drr_object,
 577                                     (u_longlong_t)drrwe->drr_offset,
 578                                     (u_longlong_t)drrwe->drr_length,
 579                                     (u_longlong_t)drrwe->drr_toguid,
 580                                     drrwe->drr_compression,
 581                                     drrwe->drr_etype,
 582                                     drrwe->drr_lsize,
 583                                     drrwe->drr_psize);
 584                         }
 585                         (void) ssread(buf,
 586                             P2ROUNDUP(drrwe->drr_psize, 8), &zc);
 587                         break;
 588                 }
 589                 if (drr->drr_type != DRR_BEGIN && very_verbose) {
 590                         (void) printf("    checksum = %llx/%llx/%llx/%llx\n",
 591                             (longlong_t)drrc->drr_checksum.zc_word[0],
 592                             (longlong_t)drrc->drr_checksum.zc_word[1],
 593                             (longlong_t)drrc->drr_checksum.zc_word[2],
 594                             (longlong_t)drrc->drr_checksum.zc_word[3]);
 595                 }
 596                 pcksum = zc;
 597         }
 598         free(buf);
 599
 600         /* Print final summary */
 601
 602         (void) printf("SUMMARY:\n");
 603         (void) printf("\tTotal DRR_BEGIN records = %lld\n",
 604             (u_longlong_t)drr_record_count[DRR_BEGIN]);
 605         (void) printf("\tTotal DRR_END records = %lld\n",
 606             (u_longlong_t)drr_record_count[DRR_END]);
 607         (void) printf("\tTotal DRR_OBJECT records = %lld\n",
 608             (u_longlong_t)drr_record_count[DRR_OBJECT]);
 609         (void) printf("\tTotal DRR_FREEOBJECTS records = %lld\n",
 610             (u_longlong_t)drr_record_count[DRR_FREEOBJECTS]);
 611         (void) printf("\tTotal DRR_WRITE records = %lld\n",
 612             (u_longlong_t)drr_record_count[DRR_WRITE]);
 613         (void) printf("\tTotal DRR_WRITE_BYREF records = %lld\n",
 614             (u_longlong_t)drr_record_count[DRR_WRITE_BYREF]);
 615         (void) printf("\tTotal DRR_WRITE_EMBEDDED records = %lld\n",
 616             (u_longlong_t)drr_record_count[DRR_WRITE_EMBEDDED]);
 617         (void) printf("\tTotal DRR_FREE records = %lld\n",
 618             (u_longlong_t)drr_record_count[DRR_FREE]);
 619         (void) printf("\tTotal DRR_SPILL records = %lld\n",
 620             (u_longlong_t)drr_record_count[DRR_SPILL]);
 621         (void) printf("\tTotal records = %lld\n",
 622             (u_longlong_t)total_records);
 623         (void) printf("\tTotal write size = %lld (0x%llx)\n",
 624             (u_longlong_t)total_write_size, (u_longlong_t)total_write_size);
 625         (void) printf("\tTotal stream length = %lld (0x%llx)\n",
 626             (u_longlong_t)total_stream_len, (u_longlong_t)total_stream_len);
 627         return (0);
 628 }