xref: /illumos-gate/usr/src/cmd/zstreamdump/zstreamdump.c (revision 9164a50bf932130cbb5097a16f6986873ce0e6e5)
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) 2014 Integros [integros.com]
29  * Copyright (c) 2013, 2015 by Delphix. All rights reserved.
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 <sys/zio.h>
43 #include <zfs_fletcher.h>
44 
45 /*
46  * If dump mode is enabled, the number of bytes to print per line
47  */
48 #define	BYTES_PER_LINE	16
49 /*
50  * If dump mode is enabled, the number of bytes to group together, separated
51  * by newlines or spaces
52  */
53 #define	DUMP_GROUPING	4
54 
55 uint64_t total_write_size = 0;
56 uint64_t total_stream_len = 0;
57 FILE *send_stream = 0;
58 boolean_t do_byteswap = B_FALSE;
59 boolean_t do_cksum = B_TRUE;
60 
61 static void
62 usage(void)
63 {
64 	(void) fprintf(stderr, "usage: zstreamdump [-v] [-C] [-d] < file\n");
65 	(void) fprintf(stderr, "\t -v -- verbose\n");
66 	(void) fprintf(stderr, "\t -C -- suppress checksum verification\n");
67 	(void) fprintf(stderr, "\t -d -- dump contents of blocks modified, "
68 	    "implies verbose\n");
69 	exit(1);
70 }
71 
72 static void *
73 safe_malloc(size_t size)
74 {
75 	void *rv = malloc(size);
76 	if (rv == NULL) {
77 		(void) fprintf(stderr, "ERROR; failed to allocate %zu bytes\n",
78 		    size);
79 		abort();
80 	}
81 	return (rv);
82 }
83 
84 /*
85  * ssread - send stream read.
86  *
87  * Read while computing incremental checksum
88  */
89 static size_t
90 ssread(void *buf, size_t len, zio_cksum_t *cksum)
91 {
92 	size_t outlen;
93 
94 	if ((outlen = fread(buf, len, 1, send_stream)) == 0)
95 		return (0);
96 
97 	if (do_cksum) {
98 		if (do_byteswap)
99 			fletcher_4_incremental_byteswap(buf, len, cksum);
100 		else
101 			fletcher_4_incremental_native(buf, len, cksum);
102 	}
103 	total_stream_len += len;
104 	return (outlen);
105 }
106 
107 static size_t
108 read_hdr(dmu_replay_record_t *drr, zio_cksum_t *cksum)
109 {
110 	ASSERT3U(offsetof(dmu_replay_record_t, drr_u.drr_checksum.drr_checksum),
111 	    ==, sizeof (dmu_replay_record_t) - sizeof (zio_cksum_t));
112 	size_t r = ssread(drr, sizeof (*drr) - sizeof (zio_cksum_t), cksum);
113 	if (r == 0)
114 		return (0);
115 	zio_cksum_t saved_cksum = *cksum;
116 	r = ssread(&drr->drr_u.drr_checksum.drr_checksum,
117 	    sizeof (zio_cksum_t), cksum);
118 	if (r == 0)
119 		return (0);
120 	if (!ZIO_CHECKSUM_IS_ZERO(&drr->drr_u.drr_checksum.drr_checksum) &&
121 	    !ZIO_CHECKSUM_EQUAL(saved_cksum,
122 	    drr->drr_u.drr_checksum.drr_checksum)) {
123 		fprintf(stderr, "invalid checksum\n");
124 		(void) printf("Incorrect checksum in record header.\n");
125 		(void) printf("Expected checksum = %llx/%llx/%llx/%llx\n",
126 		    saved_cksum.zc_word[0],
127 		    saved_cksum.zc_word[1],
128 		    saved_cksum.zc_word[2],
129 		    saved_cksum.zc_word[3]);
130 		return (0);
131 	}
132 	return (sizeof (*drr));
133 }
134 
135 /*
136  * Print part of a block in ASCII characters
137  */
138 static void
139 print_ascii_block(char *subbuf, int length)
140 {
141 	int i;
142 
143 	for (i = 0; i < length; i++) {
144 		char char_print = isprint(subbuf[i]) ? subbuf[i] : '.';
145 		if (i != 0 && i % DUMP_GROUPING == 0) {
146 			(void) printf(" ");
147 		}
148 		(void) printf("%c", char_print);
149 	}
150 	(void) printf("\n");
151 }
152 
153 /*
154  * print_block - Dump the contents of a modified block to STDOUT
155  *
156  * Assume that buf has capacity evenly divisible by BYTES_PER_LINE
157  */
158 static void
159 print_block(char *buf, int length)
160 {
161 	int i;
162 	/*
163 	 * Start printing ASCII characters at a constant offset, after
164 	 * the hex prints. Leave 3 characters per byte on a line (2 digit
165 	 * hex number plus 1 space) plus spaces between characters and
166 	 * groupings.
167 	 */
168 	int ascii_start = BYTES_PER_LINE * 3 +
169 	    BYTES_PER_LINE / DUMP_GROUPING + 2;
170 
171 	for (i = 0; i < length; i += BYTES_PER_LINE) {
172 		int j;
173 		int this_line_length = MIN(BYTES_PER_LINE, length - i);
174 		int print_offset = 0;
175 
176 		for (j = 0; j < this_line_length; j++) {
177 			int buf_offset = i + j;
178 
179 			/*
180 			 * Separate every DUMP_GROUPING bytes by a space.
181 			 */
182 			if (buf_offset % DUMP_GROUPING == 0) {
183 				print_offset += printf(" ");
184 			}
185 
186 			/*
187 			 * Print the two-digit hex value for this byte.
188 			 */
189 			unsigned char hex_print = buf[buf_offset];
190 			print_offset += printf("%02x ", hex_print);
191 		}
192 
193 		(void) printf("%*s", ascii_start - print_offset, " ");
194 
195 		print_ascii_block(buf + i, this_line_length);
196 	}
197 }
198 
199 /*
200  * Print an array of bytes to stdout as hexidecimal characters. str must
201  * have buf_len * 2 + 1 bytes of space.
202  */
203 static void
204 sprintf_bytes(char *str, uint8_t *buf, uint_t buf_len)
205 {
206 	int i, n;
207 
208 	for (i = 0; i < buf_len; i++) {
209 		n = sprintf(str, "%02x", buf[i] & 0xff);
210 		str += n;
211 	}
212 
213 	str[0] = '\0';
214 }
215 
216 int
217 main(int argc, char *argv[])
218 {
219 	char *buf = safe_malloc(SPA_MAXBLOCKSIZE);
220 	uint64_t drr_record_count[DRR_NUMTYPES] = { 0 };
221 	char salt[ZIO_DATA_SALT_LEN * 2 + 1];
222 	char iv[ZIO_DATA_IV_LEN * 2 + 1];
223 	char mac[ZIO_DATA_MAC_LEN * 2 + 1];
224 	uint64_t total_records = 0;
225 	uint64_t payload_size;
226 	dmu_replay_record_t thedrr;
227 	dmu_replay_record_t *drr = &thedrr;
228 	struct drr_begin *drrb = &thedrr.drr_u.drr_begin;
229 	struct drr_end *drre = &thedrr.drr_u.drr_end;
230 	struct drr_object *drro = &thedrr.drr_u.drr_object;
231 	struct drr_freeobjects *drrfo = &thedrr.drr_u.drr_freeobjects;
232 	struct drr_write *drrw = &thedrr.drr_u.drr_write;
233 	struct drr_write_byref *drrwbr = &thedrr.drr_u.drr_write_byref;
234 	struct drr_free *drrf = &thedrr.drr_u.drr_free;
235 	struct drr_spill *drrs = &thedrr.drr_u.drr_spill;
236 	struct drr_write_embedded *drrwe = &thedrr.drr_u.drr_write_embedded;
237 	struct drr_object_range *drror = &thedrr.drr_u.drr_object_range;
238 	struct drr_checksum *drrc = &thedrr.drr_u.drr_checksum;
239 	int c;
240 	boolean_t verbose = B_FALSE;
241 	boolean_t very_verbose = B_FALSE;
242 	boolean_t first = B_TRUE;
243 	/*
244 	 * dump flag controls whether the contents of any modified data blocks
245 	 * are printed to the console during processing of the stream. Warning:
246 	 * for large streams, this can obviously lead to massive prints.
247 	 */
248 	boolean_t dump = B_FALSE;
249 	int err;
250 	zio_cksum_t zc = { 0 };
251 	zio_cksum_t pcksum = { 0 };
252 
253 	while ((c = getopt(argc, argv, ":vCd")) != -1) {
254 		switch (c) {
255 		case 'C':
256 			do_cksum = B_FALSE;
257 			break;
258 		case 'v':
259 			if (verbose)
260 				very_verbose = B_TRUE;
261 			verbose = B_TRUE;
262 			break;
263 		case 'd':
264 			dump = B_TRUE;
265 			verbose = B_TRUE;
266 			very_verbose = B_TRUE;
267 			break;
268 		case ':':
269 			(void) fprintf(stderr,
270 			    "missing argument for '%c' option\n", optopt);
271 			usage();
272 			break;
273 		case '?':
274 			(void) fprintf(stderr, "invalid option '%c'\n",
275 			    optopt);
276 			usage();
277 			break;
278 		}
279 	}
280 
281 	if (isatty(STDIN_FILENO)) {
282 		(void) fprintf(stderr,
283 		    "Error: Backup stream can not be read "
284 		    "from a terminal.\n"
285 		    "You must redirect standard input.\n");
286 		exit(1);
287 	}
288 
289 	fletcher_4_init();
290 	send_stream = stdin;
291 	while (read_hdr(drr, &zc)) {
292 
293 		/*
294 		 * If this is the first DMU record being processed, check for
295 		 * the magic bytes and figure out the endian-ness based on them.
296 		 */
297 		if (first) {
298 			if (drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) {
299 				do_byteswap = B_TRUE;
300 				if (do_cksum) {
301 					ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
302 					/*
303 					 * recalculate header checksum now
304 					 * that we know it needs to be
305 					 * byteswapped.
306 					 */
307 					fletcher_4_incremental_byteswap(drr,
308 					    sizeof (dmu_replay_record_t), &zc);
309 				}
310 			} else if (drrb->drr_magic != DMU_BACKUP_MAGIC) {
311 				(void) fprintf(stderr, "Invalid stream "
312 				    "(bad magic number)\n");
313 				exit(1);
314 			}
315 			first = B_FALSE;
316 		}
317 		if (do_byteswap) {
318 			drr->drr_type = BSWAP_32(drr->drr_type);
319 			drr->drr_payloadlen =
320 			    BSWAP_32(drr->drr_payloadlen);
321 		}
322 
323 		/*
324 		 * At this point, the leading fields of the replay record
325 		 * (drr_type and drr_payloadlen) have been byte-swapped if
326 		 * necessary, but the rest of the data structure (the
327 		 * union of type-specific structures) is still in its
328 		 * original state.
329 		 */
330 		if (drr->drr_type >= DRR_NUMTYPES) {
331 			(void) printf("INVALID record found: type 0x%x\n",
332 			    drr->drr_type);
333 			(void) printf("Aborting.\n");
334 			exit(1);
335 		}
336 
337 		drr_record_count[drr->drr_type]++;
338 		total_records++;
339 
340 		switch (drr->drr_type) {
341 		case DRR_BEGIN:
342 			if (do_byteswap) {
343 				drrb->drr_magic = BSWAP_64(drrb->drr_magic);
344 				drrb->drr_versioninfo =
345 				    BSWAP_64(drrb->drr_versioninfo);
346 				drrb->drr_creation_time =
347 				    BSWAP_64(drrb->drr_creation_time);
348 				drrb->drr_type = BSWAP_32(drrb->drr_type);
349 				drrb->drr_flags = BSWAP_32(drrb->drr_flags);
350 				drrb->drr_toguid = BSWAP_64(drrb->drr_toguid);
351 				drrb->drr_fromguid =
352 				    BSWAP_64(drrb->drr_fromguid);
353 			}
354 
355 			(void) printf("BEGIN record\n");
356 			(void) printf("\thdrtype = %lld\n",
357 			    DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo));
358 			(void) printf("\tfeatures = %llx\n",
359 			    DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo));
360 			(void) printf("\tmagic = %llx\n",
361 			    (u_longlong_t)drrb->drr_magic);
362 			(void) printf("\tcreation_time = %llx\n",
363 			    (u_longlong_t)drrb->drr_creation_time);
364 			(void) printf("\ttype = %u\n", drrb->drr_type);
365 			(void) printf("\tflags = 0x%x\n", drrb->drr_flags);
366 			(void) printf("\ttoguid = %llx\n",
367 			    (u_longlong_t)drrb->drr_toguid);
368 			(void) printf("\tfromguid = %llx\n",
369 			    (u_longlong_t)drrb->drr_fromguid);
370 			(void) printf("\ttoname = %s\n", drrb->drr_toname);
371 			if (verbose)
372 				(void) printf("\n");
373 
374 			if (drr->drr_payloadlen != 0) {
375 				nvlist_t *nv;
376 				int sz = drr->drr_payloadlen;
377 
378 				if (sz > SPA_MAXBLOCKSIZE) {
379 					free(buf);
380 					buf = safe_malloc(sz);
381 				}
382 				(void) ssread(buf, sz, &zc);
383 				if (ferror(send_stream))
384 					perror("fread");
385 				err = nvlist_unpack(buf, sz, &nv, 0);
386 				if (err)
387 					perror(strerror(err));
388 				nvlist_print(stdout, nv);
389 				nvlist_free(nv);
390 			}
391 			break;
392 
393 		case DRR_END:
394 			if (do_byteswap) {
395 				drre->drr_checksum.zc_word[0] =
396 				    BSWAP_64(drre->drr_checksum.zc_word[0]);
397 				drre->drr_checksum.zc_word[1] =
398 				    BSWAP_64(drre->drr_checksum.zc_word[1]);
399 				drre->drr_checksum.zc_word[2] =
400 				    BSWAP_64(drre->drr_checksum.zc_word[2]);
401 				drre->drr_checksum.zc_word[3] =
402 				    BSWAP_64(drre->drr_checksum.zc_word[3]);
403 			}
404 			/*
405 			 * We compare against the *previous* checksum
406 			 * value, because the stored checksum is of
407 			 * everything before the DRR_END record.
408 			 */
409 			if (do_cksum && !ZIO_CHECKSUM_EQUAL(drre->drr_checksum,
410 			    pcksum)) {
411 				(void) printf("Expected checksum differs from "
412 				    "checksum in stream.\n");
413 				(void) printf("Expected checksum = "
414 				    "%llx/%llx/%llx/%llx\n",
415 				    pcksum.zc_word[0],
416 				    pcksum.zc_word[1],
417 				    pcksum.zc_word[2],
418 				    pcksum.zc_word[3]);
419 			}
420 			(void) printf("END checksum = %llx/%llx/%llx/%llx\n",
421 			    drre->drr_checksum.zc_word[0],
422 			    drre->drr_checksum.zc_word[1],
423 			    drre->drr_checksum.zc_word[2],
424 			    drre->drr_checksum.zc_word[3]);
425 
426 			ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
427 			break;
428 
429 		case DRR_OBJECT:
430 			if (do_byteswap) {
431 				drro->drr_object = BSWAP_64(drro->drr_object);
432 				drro->drr_type = BSWAP_32(drro->drr_type);
433 				drro->drr_bonustype =
434 				    BSWAP_32(drro->drr_bonustype);
435 				drro->drr_blksz = BSWAP_32(drro->drr_blksz);
436 				drro->drr_bonuslen =
437 				    BSWAP_32(drro->drr_bonuslen);
438 				drro->drr_raw_bonuslen =
439 				    BSWAP_32(drro->drr_raw_bonuslen);
440 				drro->drr_toguid = BSWAP_64(drro->drr_toguid);
441 			}
442 
443 			payload_size = DRR_OBJECT_PAYLOAD_SIZE(drro);
444 
445 			if (verbose) {
446 				(void) printf("OBJECT object = %" PRIu64
447 				    "type = %u bonustype = %u blksz = %u "
448 				    "bonuslen = %u "
449 				    "raw_bonuslen = %u flags = %u maxblkid "
450 				    "= %llu "
451 				    "indblkshift = %u nlevels = %u "
452 				    "nblkptr = %u\n",
453 				    (u_longlong_t)drro->drr_object,
454 				    drro->drr_type,
455 				    drro->drr_bonustype,
456 				    drro->drr_blksz,
457 				    drro->drr_bonuslen,
458 				    drro->drr_raw_bonuslen,
459 				    drro->drr_flags,
460 				    (u_longlong_t)drro->drr_maxblkid,
461 				    drro->drr_indblkshift,
462 				    drro->drr_nlevels,
463 				    drro->drr_nblkptr);
464 			}
465 			if (drro->drr_bonuslen > 0) {
466 				(void) ssread(buf, payload_size, &zc);
467 				if (dump)
468 					print_block(buf, payload_size);
469 			}
470 			break;
471 
472 		case DRR_FREEOBJECTS:
473 			if (do_byteswap) {
474 				drrfo->drr_firstobj =
475 				    BSWAP_64(drrfo->drr_firstobj);
476 				drrfo->drr_numobjs =
477 				    BSWAP_64(drrfo->drr_numobjs);
478 				drrfo->drr_toguid = BSWAP_64(drrfo->drr_toguid);
479 			}
480 			if (verbose) {
481 				(void) printf("FREEOBJECTS firstobj = %llu "
482 				    "numobjs = %llu\n",
483 				    (u_longlong_t)drrfo->drr_firstobj,
484 				    (u_longlong_t)drrfo->drr_numobjs);
485 			}
486 			break;
487 
488 		case DRR_WRITE:
489 			if (do_byteswap) {
490 				drrw->drr_object = BSWAP_64(drrw->drr_object);
491 				drrw->drr_type = BSWAP_32(drrw->drr_type);
492 				drrw->drr_offset = BSWAP_64(drrw->drr_offset);
493 				drrw->drr_logical_size =
494 				    BSWAP_64(drrw->drr_logical_size);
495 				drrw->drr_toguid = BSWAP_64(drrw->drr_toguid);
496 				drrw->drr_key.ddk_prop =
497 				    BSWAP_64(drrw->drr_key.ddk_prop);
498 				drrw->drr_compressed_size =
499 				    BSWAP_64(drrw->drr_compressed_size);
500 			}
501 
502 			payload_size = DRR_WRITE_PAYLOAD_SIZE(drrw);
503 
504 			/*
505 			 * If this is verbose and/or dump output,
506 			 * print info on the modified block
507 			 */
508 			if (verbose) {
509 				sprintf_bytes(salt, drrw->drr_salt,
510 				    ZIO_DATA_SALT_LEN);
511 				sprintf_bytes(iv, drrw->drr_iv,
512 				    ZIO_DATA_IV_LEN);
513 				sprintf_bytes(mac, drrw->drr_mac,
514 				    ZIO_DATA_MAC_LEN);
515 
516 				(void) printf("WRITE object = %llu type = %u "
517 				    "checksum type = %u compression type = %u\n"
518 				    "    flags = %u offset = %llu "
519 				    "logical_size = %llu "
520 				    "compressed_size = %llu "
521 				    "payload_size = %llu props = %llx "
522 				    "salt = %s iv = %s mac = %s\n",
523 				    (u_longlong_t)drrw->drr_object,
524 				    drrw->drr_type,
525 				    drrw->drr_checksumtype,
526 				    drrw->drr_compressiontype,
527 				    drrw->drr_flags,
528 				    (u_longlong_t)drrw->drr_offset,
529 				    (u_longlong_t)drrw->drr_logical_size,
530 				    (u_longlong_t)drrw->drr_compressed_size,
531 				    (u_longlong_t)payload_size,
532 				    (u_longlong_t)drrw->drr_key.ddk_prop,
533 				    salt,
534 				    iv,
535 				    mac);
536 			}
537 
538 			/*
539 			 * Read the contents of the block in from STDIN to buf
540 			 */
541 			(void) ssread(buf, payload_size, &zc);
542 			/*
543 			 * If in dump mode
544 			 */
545 			if (dump) {
546 				print_block(buf, payload_size);
547 			}
548 			total_write_size += payload_size;
549 			break;
550 
551 		case DRR_WRITE_BYREF:
552 			if (do_byteswap) {
553 				drrwbr->drr_object =
554 				    BSWAP_64(drrwbr->drr_object);
555 				drrwbr->drr_offset =
556 				    BSWAP_64(drrwbr->drr_offset);
557 				drrwbr->drr_length =
558 				    BSWAP_64(drrwbr->drr_length);
559 				drrwbr->drr_toguid =
560 				    BSWAP_64(drrwbr->drr_toguid);
561 				drrwbr->drr_refguid =
562 				    BSWAP_64(drrwbr->drr_refguid);
563 				drrwbr->drr_refobject =
564 				    BSWAP_64(drrwbr->drr_refobject);
565 				drrwbr->drr_refoffset =
566 				    BSWAP_64(drrwbr->drr_refoffset);
567 				drrwbr->drr_key.ddk_prop =
568 				    BSWAP_64(drrwbr->drr_key.ddk_prop);
569 			}
570 			if (verbose) {
571 				(void) printf("WRITE_BYREF object = %llu "
572 				    "checksum type = %u props = %llx\n"
573 				    "    offset = %llu length = %llu\n"
574 				    "toguid = %llx refguid = %llx\n"
575 				    "    refobject = %llu refoffset = %llu\n",
576 				    (u_longlong_t)drrwbr->drr_object,
577 				    drrwbr->drr_checksumtype,
578 				    (u_longlong_t)drrwbr->drr_key.ddk_prop,
579 				    (u_longlong_t)drrwbr->drr_offset,
580 				    (u_longlong_t)drrwbr->drr_length,
581 				    (u_longlong_t)drrwbr->drr_toguid,
582 				    (u_longlong_t)drrwbr->drr_refguid,
583 				    (u_longlong_t)drrwbr->drr_refobject,
584 				    (u_longlong_t)drrwbr->drr_refoffset);
585 			}
586 			break;
587 
588 		case DRR_FREE:
589 			if (do_byteswap) {
590 				drrf->drr_object = BSWAP_64(drrf->drr_object);
591 				drrf->drr_offset = BSWAP_64(drrf->drr_offset);
592 				drrf->drr_length = BSWAP_64(drrf->drr_length);
593 			}
594 			if (verbose) {
595 				(void) printf("FREE object = %llu "
596 				    "offset = %llu length = %lld\n",
597 				    (u_longlong_t)drrf->drr_object,
598 				    (u_longlong_t)drrf->drr_offset,
599 				    (longlong_t)drrf->drr_length);
600 			}
601 			break;
602 		case DRR_SPILL:
603 			if (do_byteswap) {
604 				drrs->drr_object = BSWAP_64(drrs->drr_object);
605 				drrs->drr_length = BSWAP_64(drrs->drr_length);
606 				drrs->drr_compressed_size =
607 				    BSWAP_64(drrs->drr_compressed_size);
608 				drrs->drr_type = BSWAP_32(drrs->drr_type);
609 			}
610 
611 			payload_size = DRR_SPILL_PAYLOAD_SIZE(drrs);
612 
613 			if (verbose) {
614 				sprintf_bytes(salt, drrs->drr_salt,
615 				    ZIO_DATA_SALT_LEN);
616 				sprintf_bytes(iv, drrs->drr_iv,
617 				    ZIO_DATA_IV_LEN);
618 				sprintf_bytes(mac, drrs->drr_mac,
619 				    ZIO_DATA_MAC_LEN);
620 
621 				(void) printf("SPILL block for object = %llu "
622 				    "length = %llu flags = %u "
623 				    "compression type = %u "
624 				    "compressed_size = %llu "
625 				    "payload_size = %llu "
626 				    "salt = %s iv = %s mac = %s\n",
627 				    (u_longlong_t)drrs->drr_object,
628 				    (u_longlong_t)drrs->drr_length,
629 				    drrs->drr_flags,
630 				    drrs->drr_compressiontype,
631 				    (u_longlong_t)drrs->drr_compressed_size,
632 				    (u_longlong_t)payload_size,
633 				    salt,
634 				    iv,
635 				    mac);
636 			}
637 			(void) ssread(buf, payload_size, &zc);
638 			if (dump) {
639 				print_block(buf, payload_size);
640 			}
641 			break;
642 		case DRR_WRITE_EMBEDDED:
643 			if (do_byteswap) {
644 				drrwe->drr_object =
645 				    BSWAP_64(drrwe->drr_object);
646 				drrwe->drr_offset =
647 				    BSWAP_64(drrwe->drr_offset);
648 				drrwe->drr_length =
649 				    BSWAP_64(drrwe->drr_length);
650 				drrwe->drr_toguid =
651 				    BSWAP_64(drrwe->drr_toguid);
652 				drrwe->drr_lsize =
653 				    BSWAP_32(drrwe->drr_lsize);
654 				drrwe->drr_psize =
655 				    BSWAP_32(drrwe->drr_psize);
656 			}
657 			if (verbose) {
658 				(void) printf("WRITE_EMBEDDED object = %llu "
659 				    "offset = %llu length = %llu\n"
660 				    "    toguid = %llx comp = %u etype = %u "
661 				    "lsize = %u psize = %u\n",
662 				    (u_longlong_t)drrwe->drr_object,
663 				    (u_longlong_t)drrwe->drr_offset,
664 				    (u_longlong_t)drrwe->drr_length,
665 				    (u_longlong_t)drrwe->drr_toguid,
666 				    drrwe->drr_compression,
667 				    drrwe->drr_etype,
668 				    drrwe->drr_lsize,
669 				    drrwe->drr_psize);
670 			}
671 			(void) ssread(buf,
672 			    P2ROUNDUP(drrwe->drr_psize, 8), &zc);
673 			break;
674 		case DRR_OBJECT_RANGE:
675 			if (do_byteswap) {
676 				drror->drr_firstobj =
677 				    BSWAP_64(drror->drr_firstobj);
678 				drror->drr_numslots =
679 				    BSWAP_64(drror->drr_numslots);
680 				drror->drr_toguid = BSWAP_64(drror->drr_toguid);
681 			}
682 			if (verbose) {
683 				sprintf_bytes(salt, drror->drr_salt,
684 				    ZIO_DATA_SALT_LEN);
685 				sprintf_bytes(iv, drror->drr_iv,
686 				    ZIO_DATA_IV_LEN);
687 				sprintf_bytes(mac, drror->drr_mac,
688 				    ZIO_DATA_MAC_LEN);
689 
690 				(void) printf("OBJECT_RANGE firstobj = %llu "
691 				    "numslots = %llu flags = %u "
692 				    "salt = %s iv = %s mac = %s\n",
693 				    (u_longlong_t)drror->drr_firstobj,
694 				    (u_longlong_t)drror->drr_numslots,
695 				    drror->drr_flags,
696 				    salt,
697 				    iv,
698 				    mac);
699 			}
700 			break;
701 		case DRR_NUMTYPES:
702 			/* should never be reached */
703 			exit(1);
704 		}
705 		if (drr->drr_type != DRR_BEGIN && very_verbose) {
706 			(void) printf("    checksum = %llx/%llx/%llx/%llx\n",
707 			    (longlong_t)drrc->drr_checksum.zc_word[0],
708 			    (longlong_t)drrc->drr_checksum.zc_word[1],
709 			    (longlong_t)drrc->drr_checksum.zc_word[2],
710 			    (longlong_t)drrc->drr_checksum.zc_word[3]);
711 		}
712 		pcksum = zc;
713 	}
714 	free(buf);
715 	fletcher_4_fini();
716 
717 	/* Print final summary */
718 
719 	(void) printf("SUMMARY:\n");
720 	(void) printf("\tTotal DRR_BEGIN records = %lld\n",
721 	    (u_longlong_t)drr_record_count[DRR_BEGIN]);
722 	(void) printf("\tTotal DRR_END records = %lld\n",
723 	    (u_longlong_t)drr_record_count[DRR_END]);
724 	(void) printf("\tTotal DRR_OBJECT records = %lld\n",
725 	    (u_longlong_t)drr_record_count[DRR_OBJECT]);
726 	(void) printf("\tTotal DRR_FREEOBJECTS records = %lld\n",
727 	    (u_longlong_t)drr_record_count[DRR_FREEOBJECTS]);
728 	(void) printf("\tTotal DRR_WRITE records = %lld\n",
729 	    (u_longlong_t)drr_record_count[DRR_WRITE]);
730 	(void) printf("\tTotal DRR_WRITE_BYREF records = %lld\n",
731 	    (u_longlong_t)drr_record_count[DRR_WRITE_BYREF]);
732 	(void) printf("\tTotal DRR_WRITE_EMBEDDED records = %lld\n",
733 	    (u_longlong_t)drr_record_count[DRR_WRITE_EMBEDDED]);
734 	(void) printf("\tTotal DRR_FREE records = %lld\n",
735 	    (u_longlong_t)drr_record_count[DRR_FREE]);
736 	(void) printf("\tTotal DRR_SPILL records = %lld\n",
737 	    (u_longlong_t)drr_record_count[DRR_SPILL]);
738 	(void) printf("\tTotal records = %lld\n",
739 	    (u_longlong_t)total_records);
740 	(void) printf("\tTotal write size = %lld (0x%llx)\n",
741 	    (u_longlong_t)total_write_size, (u_longlong_t)total_write_size);
742 	(void) printf("\tTotal stream length = %lld (0x%llx)\n",
743 	    (u_longlong_t)total_stream_len, (u_longlong_t)total_stream_len);
744 	return (0);
745 }
746