xref: /illumos-gate/usr/src/cmd/zstreamdump/zstreamdump.c (revision 440a8a36792bdf9ef51639066aab0b7771ffcab8)
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 	char 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 	send_stream = stdin;
290 	while (read_hdr(drr, &zc)) {
291 
292 		/*
293 		 * If this is the first DMU record being processed, check for
294 		 * the magic bytes and figure out the endian-ness based on them.
295 		 */
296 		if (first) {
297 			if (drrb->drr_magic == BSWAP_64(DMU_BACKUP_MAGIC)) {
298 				do_byteswap = B_TRUE;
299 				if (do_cksum) {
300 					ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
301 					/*
302 					 * recalculate header checksum now
303 					 * that we know it needs to be
304 					 * byteswapped.
305 					 */
306 					fletcher_4_incremental_byteswap(drr,
307 					    sizeof (dmu_replay_record_t), &zc);
308 				}
309 			} else if (drrb->drr_magic != DMU_BACKUP_MAGIC) {
310 				(void) fprintf(stderr, "Invalid stream "
311 				    "(bad magic number)\n");
312 				exit(1);
313 			}
314 			first = B_FALSE;
315 		}
316 		if (do_byteswap) {
317 			drr->drr_type = BSWAP_32(drr->drr_type);
318 			drr->drr_payloadlen =
319 			    BSWAP_32(drr->drr_payloadlen);
320 		}
321 
322 		/*
323 		 * At this point, the leading fields of the replay record
324 		 * (drr_type and drr_payloadlen) have been byte-swapped if
325 		 * necessary, but the rest of the data structure (the
326 		 * union of type-specific structures) is still in its
327 		 * original state.
328 		 */
329 		if (drr->drr_type >= DRR_NUMTYPES) {
330 			(void) printf("INVALID record found: type 0x%x\n",
331 			    drr->drr_type);
332 			(void) printf("Aborting.\n");
333 			exit(1);
334 		}
335 
336 		drr_record_count[drr->drr_type]++;
337 		total_records++;
338 
339 		switch (drr->drr_type) {
340 		case DRR_BEGIN:
341 			if (do_byteswap) {
342 				drrb->drr_magic = BSWAP_64(drrb->drr_magic);
343 				drrb->drr_versioninfo =
344 				    BSWAP_64(drrb->drr_versioninfo);
345 				drrb->drr_creation_time =
346 				    BSWAP_64(drrb->drr_creation_time);
347 				drrb->drr_type = BSWAP_32(drrb->drr_type);
348 				drrb->drr_flags = BSWAP_32(drrb->drr_flags);
349 				drrb->drr_toguid = BSWAP_64(drrb->drr_toguid);
350 				drrb->drr_fromguid =
351 				    BSWAP_64(drrb->drr_fromguid);
352 			}
353 
354 			(void) printf("BEGIN record\n");
355 			(void) printf("\thdrtype = %lld\n",
356 			    DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo));
357 			(void) printf("\tfeatures = %llx\n",
358 			    DMU_GET_FEATUREFLAGS(drrb->drr_versioninfo));
359 			(void) printf("\tmagic = %llx\n",
360 			    (u_longlong_t)drrb->drr_magic);
361 			(void) printf("\tcreation_time = %llx\n",
362 			    (u_longlong_t)drrb->drr_creation_time);
363 			(void) printf("\ttype = %u\n", drrb->drr_type);
364 			(void) printf("\tflags = 0x%x\n", drrb->drr_flags);
365 			(void) printf("\ttoguid = %llx\n",
366 			    (u_longlong_t)drrb->drr_toguid);
367 			(void) printf("\tfromguid = %llx\n",
368 			    (u_longlong_t)drrb->drr_fromguid);
369 			(void) printf("\ttoname = %s\n", drrb->drr_toname);
370 			if (verbose)
371 				(void) printf("\n");
372 
373 			if (drr->drr_payloadlen != 0) {
374 				nvlist_t *nv;
375 				int sz = drr->drr_payloadlen;
376 
377 				if (sz > SPA_MAXBLOCKSIZE) {
378 					free(buf);
379 					buf = safe_malloc(sz);
380 				}
381 				(void) ssread(buf, sz, &zc);
382 				if (ferror(send_stream))
383 					perror("fread");
384 				err = nvlist_unpack(buf, sz, &nv, 0);
385 				if (err)
386 					perror(strerror(err));
387 				nvlist_print(stdout, nv);
388 				nvlist_free(nv);
389 			}
390 			break;
391 
392 		case DRR_END:
393 			if (do_byteswap) {
394 				drre->drr_checksum.zc_word[0] =
395 				    BSWAP_64(drre->drr_checksum.zc_word[0]);
396 				drre->drr_checksum.zc_word[1] =
397 				    BSWAP_64(drre->drr_checksum.zc_word[1]);
398 				drre->drr_checksum.zc_word[2] =
399 				    BSWAP_64(drre->drr_checksum.zc_word[2]);
400 				drre->drr_checksum.zc_word[3] =
401 				    BSWAP_64(drre->drr_checksum.zc_word[3]);
402 			}
403 			/*
404 			 * We compare against the *previous* checksum
405 			 * value, because the stored checksum is of
406 			 * everything before the DRR_END record.
407 			 */
408 			if (do_cksum && !ZIO_CHECKSUM_EQUAL(drre->drr_checksum,
409 			    pcksum)) {
410 				(void) printf("Expected checksum differs from "
411 				    "checksum in stream.\n");
412 				(void) printf("Expected checksum = "
413 				    "%llx/%llx/%llx/%llx\n",
414 				    pcksum.zc_word[0],
415 				    pcksum.zc_word[1],
416 				    pcksum.zc_word[2],
417 				    pcksum.zc_word[3]);
418 			}
419 			(void) printf("END checksum = %llx/%llx/%llx/%llx\n",
420 			    drre->drr_checksum.zc_word[0],
421 			    drre->drr_checksum.zc_word[1],
422 			    drre->drr_checksum.zc_word[2],
423 			    drre->drr_checksum.zc_word[3]);
424 
425 			ZIO_SET_CHECKSUM(&zc, 0, 0, 0, 0);
426 			break;
427 
428 		case DRR_OBJECT:
429 			if (do_byteswap) {
430 				drro->drr_object = BSWAP_64(drro->drr_object);
431 				drro->drr_type = BSWAP_32(drro->drr_type);
432 				drro->drr_bonustype =
433 				    BSWAP_32(drro->drr_bonustype);
434 				drro->drr_blksz = BSWAP_32(drro->drr_blksz);
435 				drro->drr_bonuslen =
436 				    BSWAP_32(drro->drr_bonuslen);
437 				drro->drr_raw_bonuslen =
438 				    BSWAP_32(drro->drr_raw_bonuslen);
439 				drro->drr_toguid = BSWAP_64(drro->drr_toguid);
440 			}
441 
442 			payload_size = DRR_OBJECT_PAYLOAD_SIZE(drro);
443 
444 			if (verbose) {
445 				(void) printf("OBJECT object = %" PRIu64
446 				    "type = %u bonustype = %u blksz = %u "
447 				    "bonuslen = %u "
448 				    "raw_bonuslen = %u flags = %u maxblkid "
449 				    "= %llu "
450 				    "indblkshift = %u nlevels = %u "
451 				    "nblkptr = %u\n",
452 				    (u_longlong_t)drro->drr_object,
453 				    drro->drr_type,
454 				    drro->drr_bonustype,
455 				    drro->drr_blksz,
456 				    drro->drr_bonuslen,
457 				    drro->drr_raw_bonuslen,
458 				    drro->drr_flags,
459 				    (u_longlong_t)drro->drr_maxblkid,
460 				    drro->drr_indblkshift,
461 				    drro->drr_nlevels,
462 				    drro->drr_nblkptr);
463 			}
464 			if (drro->drr_bonuslen > 0) {
465 				(void) ssread(buf, payload_size, &zc);
466 				if (dump)
467 					print_block(buf, payload_size);
468 			}
469 			break;
470 
471 		case DRR_FREEOBJECTS:
472 			if (do_byteswap) {
473 				drrfo->drr_firstobj =
474 				    BSWAP_64(drrfo->drr_firstobj);
475 				drrfo->drr_numobjs =
476 				    BSWAP_64(drrfo->drr_numobjs);
477 				drrfo->drr_toguid = BSWAP_64(drrfo->drr_toguid);
478 			}
479 			if (verbose) {
480 				(void) printf("FREEOBJECTS firstobj = %llu "
481 				    "numobjs = %llu\n",
482 				    (u_longlong_t)drrfo->drr_firstobj,
483 				    (u_longlong_t)drrfo->drr_numobjs);
484 			}
485 			break;
486 
487 		case DRR_WRITE:
488 			if (do_byteswap) {
489 				drrw->drr_object = BSWAP_64(drrw->drr_object);
490 				drrw->drr_type = BSWAP_32(drrw->drr_type);
491 				drrw->drr_offset = BSWAP_64(drrw->drr_offset);
492 				drrw->drr_logical_size =
493 				    BSWAP_64(drrw->drr_logical_size);
494 				drrw->drr_toguid = BSWAP_64(drrw->drr_toguid);
495 				drrw->drr_key.ddk_prop =
496 				    BSWAP_64(drrw->drr_key.ddk_prop);
497 				drrw->drr_compressed_size =
498 				    BSWAP_64(drrw->drr_compressed_size);
499 			}
500 
501 			payload_size = DRR_WRITE_PAYLOAD_SIZE(drrw);
502 
503 			/*
504 			 * If this is verbose and/or dump output,
505 			 * print info on the modified block
506 			 */
507 			if (verbose) {
508 				sprintf_bytes(salt, drrw->drr_salt,
509 				    ZIO_DATA_SALT_LEN);
510 				sprintf_bytes(iv, drrw->drr_iv,
511 				    ZIO_DATA_IV_LEN);
512 				sprintf_bytes(mac, drrw->drr_mac,
513 				    ZIO_DATA_MAC_LEN);
514 
515 				(void) printf("WRITE object = %llu type = %u "
516 				    "checksum type = %u compression type = %u\n"
517 				    "    flags = %u offset = %llu "
518 				    "logical_size = %llu "
519 				    "compressed_size = %llu "
520 				    "payload_size = %llu props = %llx "
521 				    "salt = %s iv = %s mac = %s\n",
522 				    (u_longlong_t)drrw->drr_object,
523 				    drrw->drr_type,
524 				    drrw->drr_checksumtype,
525 				    drrw->drr_compressiontype,
526 				    drrw->drr_flags,
527 				    (u_longlong_t)drrw->drr_offset,
528 				    (u_longlong_t)drrw->drr_logical_size,
529 				    (u_longlong_t)drrw->drr_compressed_size,
530 				    (u_longlong_t)payload_size,
531 				    (u_longlong_t)drrw->drr_key.ddk_prop,
532 				    salt,
533 				    iv,
534 				    mac);
535 			}
536 
537 			/*
538 			 * Read the contents of the block in from STDIN to buf
539 			 */
540 			(void) ssread(buf, payload_size, &zc);
541 			/*
542 			 * If in dump mode
543 			 */
544 			if (dump) {
545 				print_block(buf, payload_size);
546 			}
547 			total_write_size += payload_size;
548 			break;
549 
550 		case DRR_WRITE_BYREF:
551 			if (do_byteswap) {
552 				drrwbr->drr_object =
553 				    BSWAP_64(drrwbr->drr_object);
554 				drrwbr->drr_offset =
555 				    BSWAP_64(drrwbr->drr_offset);
556 				drrwbr->drr_length =
557 				    BSWAP_64(drrwbr->drr_length);
558 				drrwbr->drr_toguid =
559 				    BSWAP_64(drrwbr->drr_toguid);
560 				drrwbr->drr_refguid =
561 				    BSWAP_64(drrwbr->drr_refguid);
562 				drrwbr->drr_refobject =
563 				    BSWAP_64(drrwbr->drr_refobject);
564 				drrwbr->drr_refoffset =
565 				    BSWAP_64(drrwbr->drr_refoffset);
566 				drrwbr->drr_key.ddk_prop =
567 				    BSWAP_64(drrwbr->drr_key.ddk_prop);
568 			}
569 			if (verbose) {
570 				(void) printf("WRITE_BYREF object = %llu "
571 				    "checksum type = %u props = %llx\n"
572 				    "    offset = %llu length = %llu\n"
573 				    "toguid = %llx refguid = %llx\n"
574 				    "    refobject = %llu refoffset = %llu\n",
575 				    (u_longlong_t)drrwbr->drr_object,
576 				    drrwbr->drr_checksumtype,
577 				    (u_longlong_t)drrwbr->drr_key.ddk_prop,
578 				    (u_longlong_t)drrwbr->drr_offset,
579 				    (u_longlong_t)drrwbr->drr_length,
580 				    (u_longlong_t)drrwbr->drr_toguid,
581 				    (u_longlong_t)drrwbr->drr_refguid,
582 				    (u_longlong_t)drrwbr->drr_refobject,
583 				    (u_longlong_t)drrwbr->drr_refoffset);
584 			}
585 			break;
586 
587 		case DRR_FREE:
588 			if (do_byteswap) {
589 				drrf->drr_object = BSWAP_64(drrf->drr_object);
590 				drrf->drr_offset = BSWAP_64(drrf->drr_offset);
591 				drrf->drr_length = BSWAP_64(drrf->drr_length);
592 			}
593 			if (verbose) {
594 				(void) printf("FREE object = %llu "
595 				    "offset = %llu length = %lld\n",
596 				    (u_longlong_t)drrf->drr_object,
597 				    (u_longlong_t)drrf->drr_offset,
598 				    (longlong_t)drrf->drr_length);
599 			}
600 			break;
601 		case DRR_SPILL:
602 			if (do_byteswap) {
603 				drrs->drr_object = BSWAP_64(drrs->drr_object);
604 				drrs->drr_length = BSWAP_64(drrs->drr_length);
605 				drrs->drr_compressed_size =
606 				    BSWAP_64(drrs->drr_compressed_size);
607 				drrs->drr_type = BSWAP_32(drrs->drr_type);
608 			}
609 
610 			payload_size = DRR_SPILL_PAYLOAD_SIZE(drrs);
611 
612 			if (verbose) {
613 				sprintf_bytes(salt, drrs->drr_salt,
614 				    ZIO_DATA_SALT_LEN);
615 				sprintf_bytes(iv, drrs->drr_iv,
616 				    ZIO_DATA_IV_LEN);
617 				sprintf_bytes(mac, drrs->drr_mac,
618 				    ZIO_DATA_MAC_LEN);
619 
620 				(void) printf("SPILL block for object = %llu "
621 				    "length = %llu flags = %u "
622 				    "compression type = %u "
623 				    "compressed_size = %llu "
624 				    "payload_size = %llu "
625 				    "salt = %s iv = %s mac = %s\n",
626 				    (u_longlong_t)drrs->drr_object,
627 				    (u_longlong_t)drrs->drr_length,
628 				    drrs->drr_flags,
629 				    drrs->drr_compressiontype,
630 				    (u_longlong_t)drrs->drr_compressed_size,
631 				    (u_longlong_t)payload_size,
632 				    salt,
633 				    iv,
634 				    mac);
635 			}
636 			(void) ssread(buf, payload_size, &zc);
637 			if (dump) {
638 				print_block(buf, payload_size);
639 			}
640 			break;
641 		case DRR_WRITE_EMBEDDED:
642 			if (do_byteswap) {
643 				drrwe->drr_object =
644 				    BSWAP_64(drrwe->drr_object);
645 				drrwe->drr_offset =
646 				    BSWAP_64(drrwe->drr_offset);
647 				drrwe->drr_length =
648 				    BSWAP_64(drrwe->drr_length);
649 				drrwe->drr_toguid =
650 				    BSWAP_64(drrwe->drr_toguid);
651 				drrwe->drr_lsize =
652 				    BSWAP_32(drrwe->drr_lsize);
653 				drrwe->drr_psize =
654 				    BSWAP_32(drrwe->drr_psize);
655 			}
656 			if (verbose) {
657 				(void) printf("WRITE_EMBEDDED object = %llu "
658 				    "offset = %llu length = %llu\n"
659 				    "    toguid = %llx comp = %u etype = %u "
660 				    "lsize = %u psize = %u\n",
661 				    (u_longlong_t)drrwe->drr_object,
662 				    (u_longlong_t)drrwe->drr_offset,
663 				    (u_longlong_t)drrwe->drr_length,
664 				    (u_longlong_t)drrwe->drr_toguid,
665 				    drrwe->drr_compression,
666 				    drrwe->drr_etype,
667 				    drrwe->drr_lsize,
668 				    drrwe->drr_psize);
669 			}
670 			(void) ssread(buf,
671 			    P2ROUNDUP(drrwe->drr_psize, 8), &zc);
672 			break;
673 		case DRR_OBJECT_RANGE:
674 			if (do_byteswap) {
675 				drror->drr_firstobj =
676 				    BSWAP_64(drror->drr_firstobj);
677 				drror->drr_numslots =
678 				    BSWAP_64(drror->drr_numslots);
679 				drror->drr_toguid = BSWAP_64(drror->drr_toguid);
680 			}
681 			if (verbose) {
682 				sprintf_bytes(salt, drror->drr_salt,
683 				    ZIO_DATA_SALT_LEN);
684 				sprintf_bytes(iv, drror->drr_iv,
685 				    ZIO_DATA_IV_LEN);
686 				sprintf_bytes(mac, drror->drr_mac,
687 				    ZIO_DATA_MAC_LEN);
688 
689 				(void) printf("OBJECT_RANGE firstobj = %llu "
690 				    "numslots = %llu flags = %u "
691 				    "salt = %s iv = %s mac = %s\n",
692 				    (u_longlong_t)drror->drr_firstobj,
693 				    (u_longlong_t)drror->drr_numslots,
694 				    drror->drr_flags,
695 				    salt,
696 				    iv,
697 				    mac);
698 			}
699 			break;
700 		case DRR_NUMTYPES:
701 			/* should never be reached */
702 			exit(1);
703 		}
704 		if (drr->drr_type != DRR_BEGIN && very_verbose) {
705 			(void) printf("    checksum = %llx/%llx/%llx/%llx\n",
706 			    (longlong_t)drrc->drr_checksum.zc_word[0],
707 			    (longlong_t)drrc->drr_checksum.zc_word[1],
708 			    (longlong_t)drrc->drr_checksum.zc_word[2],
709 			    (longlong_t)drrc->drr_checksum.zc_word[3]);
710 		}
711 		pcksum = zc;
712 	}
713 	free(buf);
714 
715 	/* Print final summary */
716 
717 	(void) printf("SUMMARY:\n");
718 	(void) printf("\tTotal DRR_BEGIN records = %lld\n",
719 	    (u_longlong_t)drr_record_count[DRR_BEGIN]);
720 	(void) printf("\tTotal DRR_END records = %lld\n",
721 	    (u_longlong_t)drr_record_count[DRR_END]);
722 	(void) printf("\tTotal DRR_OBJECT records = %lld\n",
723 	    (u_longlong_t)drr_record_count[DRR_OBJECT]);
724 	(void) printf("\tTotal DRR_FREEOBJECTS records = %lld\n",
725 	    (u_longlong_t)drr_record_count[DRR_FREEOBJECTS]);
726 	(void) printf("\tTotal DRR_WRITE records = %lld\n",
727 	    (u_longlong_t)drr_record_count[DRR_WRITE]);
728 	(void) printf("\tTotal DRR_WRITE_BYREF records = %lld\n",
729 	    (u_longlong_t)drr_record_count[DRR_WRITE_BYREF]);
730 	(void) printf("\tTotal DRR_WRITE_EMBEDDED records = %lld\n",
731 	    (u_longlong_t)drr_record_count[DRR_WRITE_EMBEDDED]);
732 	(void) printf("\tTotal DRR_FREE records = %lld\n",
733 	    (u_longlong_t)drr_record_count[DRR_FREE]);
734 	(void) printf("\tTotal DRR_SPILL records = %lld\n",
735 	    (u_longlong_t)drr_record_count[DRR_SPILL]);
736 	(void) printf("\tTotal records = %lld\n",
737 	    (u_longlong_t)total_records);
738 	(void) printf("\tTotal write size = %lld (0x%llx)\n",
739 	    (u_longlong_t)total_write_size, (u_longlong_t)total_write_size);
740 	(void) printf("\tTotal stream length = %lld (0x%llx)\n",
741 	    (u_longlong_t)total_stream_len, (u_longlong_t)total_stream_len);
742 	return (0);
743 }
744