zdb.c revision 88b7b0f29b20b808b9e06071885b1d6a3ddb6328
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#include <sys/arc.h>
54#undef ZFS_MAXNAMELEN
55#undef verify
56#include <libzfs.h>
57
58const char cmdname[] = "zdb";
59uint8_t dump_opt[256];
60
61typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
62
63extern void dump_intent_log(zilog_t *);
64uint64_t *zopt_object = NULL;
65int zopt_objects = 0;
66libzfs_handle_t *g_zfs;
67boolean_t zdb_sig_user_data = B_TRUE;
68int zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
69
70/*
71 * These libumem hooks provide a reasonable set of defaults for the allocator's
72 * debugging facilities.
73 */
74const char *
75_umem_debug_init()
76{
77	return ("default,verbose"); /* $UMEM_DEBUG setting */
78}
79
80const char *
81_umem_logging_init(void)
82{
83	return ("fail,contents"); /* $UMEM_LOGGING setting */
84}
85
86static void
87usage(void)
88{
89	(void) fprintf(stderr,
90	    "Usage: %s [-udibcsv] [-U cachefile_path] "
91	    "[-S user:cksumalg] "
92	    "dataset [object...]\n"
93	    "       %s -C [pool]\n"
94	    "       %s -l dev\n"
95	    "       %s -R pool:vdev:offset:size:flags\n"
96	    "       %s [-p path_to_vdev_dir]\n"
97	    "       %s -e pool | GUID | devid ...\n",
98	    cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
99
100	(void) fprintf(stderr, "	-u uberblock\n");
101	(void) fprintf(stderr, "	-d datasets\n");
102	(void) fprintf(stderr, "        -C cached pool configuration\n");
103	(void) fprintf(stderr, "	-i intent logs\n");
104	(void) fprintf(stderr, "	-b block statistics\n");
105	(void) fprintf(stderr, "	-c checksum all data blocks\n");
106	(void) fprintf(stderr, "	-s report stats on zdb's I/O\n");
107	(void) fprintf(stderr, "	-S <user|all>:<cksum_alg|all> -- "
108	    "dump blkptr signatures\n");
109	(void) fprintf(stderr, "	-v verbose (applies to all others)\n");
110	(void) fprintf(stderr, "        -l dump label contents\n");
111	(void) fprintf(stderr, "	-U cachefile_path -- use alternate "
112	    "cachefile\n");
113	(void) fprintf(stderr, "        -R read and display block from a "
114	    "device\n");
115	(void) fprintf(stderr, "        -e Pool is exported/destroyed/"
116	    "has altroot\n");
117	(void) fprintf(stderr, "	-p <Path to vdev dir> (use with -e)\n");
118	(void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
119	    "to make only that option verbose\n");
120	(void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
121	exit(1);
122}
123
124static void
125fatal(const char *fmt, ...)
126{
127	va_list ap;
128
129	va_start(ap, fmt);
130	(void) fprintf(stderr, "%s: ", cmdname);
131	(void) vfprintf(stderr, fmt, ap);
132	va_end(ap);
133	(void) fprintf(stderr, "\n");
134
135	abort();
136}
137
138static void
139dump_nvlist(nvlist_t *list, int indent)
140{
141	nvpair_t *elem = NULL;
142
143	while ((elem = nvlist_next_nvpair(list, elem)) != NULL) {
144		switch (nvpair_type(elem)) {
145		case DATA_TYPE_STRING:
146			{
147				char *value;
148
149				VERIFY(nvpair_value_string(elem, &value) == 0);
150				(void) printf("%*s%s='%s'\n", indent, "",
151				    nvpair_name(elem), value);
152			}
153			break;
154
155		case DATA_TYPE_UINT64:
156			{
157				uint64_t value;
158
159				VERIFY(nvpair_value_uint64(elem, &value) == 0);
160				(void) printf("%*s%s=%llu\n", indent, "",
161				    nvpair_name(elem), (u_longlong_t)value);
162			}
163			break;
164
165		case DATA_TYPE_NVLIST:
166			{
167				nvlist_t *value;
168
169				VERIFY(nvpair_value_nvlist(elem, &value) == 0);
170				(void) printf("%*s%s\n", indent, "",
171				    nvpair_name(elem));
172				dump_nvlist(value, indent + 4);
173			}
174			break;
175
176		case DATA_TYPE_NVLIST_ARRAY:
177			{
178				nvlist_t **value;
179				uint_t c, count;
180
181				VERIFY(nvpair_value_nvlist_array(elem, &value,
182				    &count) == 0);
183
184				for (c = 0; c < count; c++) {
185					(void) printf("%*s%s[%u]\n", indent, "",
186					    nvpair_name(elem), c);
187					dump_nvlist(value[c], indent + 8);
188				}
189			}
190			break;
191
192		default:
193
194			(void) printf("bad config type %d for %s\n",
195			    nvpair_type(elem), nvpair_name(elem));
196		}
197	}
198}
199
200/* ARGSUSED */
201static void
202dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
203{
204	nvlist_t *nv;
205	size_t nvsize = *(uint64_t *)data;
206	char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
207
208	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed));
209
210	VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
211
212	umem_free(packed, nvsize);
213
214	dump_nvlist(nv, 8);
215
216	nvlist_free(nv);
217}
218
219const char dump_zap_stars[] = "****************************************";
220const int dump_zap_width = sizeof (dump_zap_stars) - 1;
221
222static void
223dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE])
224{
225	int i;
226	int minidx = ZAP_HISTOGRAM_SIZE - 1;
227	int maxidx = 0;
228	uint64_t max = 0;
229
230	for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) {
231		if (histo[i] > max)
232			max = histo[i];
233		if (histo[i] > 0 && i > maxidx)
234			maxidx = i;
235		if (histo[i] > 0 && i < minidx)
236			minidx = i;
237	}
238
239	if (max < dump_zap_width)
240		max = dump_zap_width;
241
242	for (i = minidx; i <= maxidx; i++)
243		(void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i],
244		    &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]);
245}
246
247static void
248dump_zap_stats(objset_t *os, uint64_t object)
249{
250	int error;
251	zap_stats_t zs;
252
253	error = zap_get_stats(os, object, &zs);
254	if (error)
255		return;
256
257	if (zs.zs_ptrtbl_len == 0) {
258		ASSERT(zs.zs_num_blocks == 1);
259		(void) printf("\tmicrozap: %llu bytes, %llu entries\n",
260		    (u_longlong_t)zs.zs_blocksize,
261		    (u_longlong_t)zs.zs_num_entries);
262		return;
263	}
264
265	(void) printf("\tFat ZAP stats:\n");
266
267	(void) printf("\t\tPointer table:\n");
268	(void) printf("\t\t\t%llu elements\n",
269	    (u_longlong_t)zs.zs_ptrtbl_len);
270	(void) printf("\t\t\tzt_blk: %llu\n",
271	    (u_longlong_t)zs.zs_ptrtbl_zt_blk);
272	(void) printf("\t\t\tzt_numblks: %llu\n",
273	    (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
274	(void) printf("\t\t\tzt_shift: %llu\n",
275	    (u_longlong_t)zs.zs_ptrtbl_zt_shift);
276	(void) printf("\t\t\tzt_blks_copied: %llu\n",
277	    (u_longlong_t)zs.zs_ptrtbl_blks_copied);
278	(void) printf("\t\t\tzt_nextblk: %llu\n",
279	    (u_longlong_t)zs.zs_ptrtbl_nextblk);
280
281	(void) printf("\t\tZAP entries: %llu\n",
282	    (u_longlong_t)zs.zs_num_entries);
283	(void) printf("\t\tLeaf blocks: %llu\n",
284	    (u_longlong_t)zs.zs_num_leafs);
285	(void) printf("\t\tTotal blocks: %llu\n",
286	    (u_longlong_t)zs.zs_num_blocks);
287	(void) printf("\t\tzap_block_type: 0x%llx\n",
288	    (u_longlong_t)zs.zs_block_type);
289	(void) printf("\t\tzap_magic: 0x%llx\n",
290	    (u_longlong_t)zs.zs_magic);
291	(void) printf("\t\tzap_salt: 0x%llx\n",
292	    (u_longlong_t)zs.zs_salt);
293
294	(void) printf("\t\tLeafs with 2^n pointers:\n");
295	dump_zap_histogram(zs.zs_leafs_with_2n_pointers);
296
297	(void) printf("\t\tBlocks with n*5 entries:\n");
298	dump_zap_histogram(zs.zs_blocks_with_n5_entries);
299
300	(void) printf("\t\tBlocks n/10 full:\n");
301	dump_zap_histogram(zs.zs_blocks_n_tenths_full);
302
303	(void) printf("\t\tEntries with n chunks:\n");
304	dump_zap_histogram(zs.zs_entries_using_n_chunks);
305
306	(void) printf("\t\tBuckets with n entries:\n");
307	dump_zap_histogram(zs.zs_buckets_with_n_entries);
308}
309
310/*ARGSUSED*/
311static void
312dump_none(objset_t *os, uint64_t object, void *data, size_t size)
313{
314}
315
316/*ARGSUSED*/
317void
318dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
319{
320}
321
322/*ARGSUSED*/
323static void
324dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
325{
326}
327
328/*ARGSUSED*/
329static void
330dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
331{
332	zap_cursor_t zc;
333	zap_attribute_t attr;
334	void *prop;
335	int i;
336
337	dump_zap_stats(os, object);
338	(void) printf("\n");
339
340	for (zap_cursor_init(&zc, os, object);
341	    zap_cursor_retrieve(&zc, &attr) == 0;
342	    zap_cursor_advance(&zc)) {
343		(void) printf("\t\t%s = ", attr.za_name);
344		if (attr.za_num_integers == 0) {
345			(void) printf("\n");
346			continue;
347		}
348		prop = umem_zalloc(attr.za_num_integers *
349		    attr.za_integer_length, UMEM_NOFAIL);
350		(void) zap_lookup(os, object, attr.za_name,
351		    attr.za_integer_length, attr.za_num_integers, prop);
352		if (attr.za_integer_length == 1) {
353			(void) printf("%s", (char *)prop);
354		} else {
355			for (i = 0; i < attr.za_num_integers; i++) {
356				switch (attr.za_integer_length) {
357				case 2:
358					(void) printf("%u ",
359					    ((uint16_t *)prop)[i]);
360					break;
361				case 4:
362					(void) printf("%u ",
363					    ((uint32_t *)prop)[i]);
364					break;
365				case 8:
366					(void) printf("%lld ",
367					    (u_longlong_t)((int64_t *)prop)[i]);
368					break;
369				}
370			}
371		}
372		(void) printf("\n");
373		umem_free(prop, attr.za_num_integers * attr.za_integer_length);
374	}
375	zap_cursor_fini(&zc);
376}
377
378/*ARGSUSED*/
379static void
380dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
381{
382	zap_cursor_t zc;
383	zap_attribute_t attr;
384	const char *typenames[] = {
385		/* 0 */ "not specified",
386		/* 1 */ "FIFO",
387		/* 2 */ "Character Device",
388		/* 3 */ "3 (invalid)",
389		/* 4 */ "Directory",
390		/* 5 */ "5 (invalid)",
391		/* 6 */ "Block Device",
392		/* 7 */ "7 (invalid)",
393		/* 8 */ "Regular File",
394		/* 9 */ "9 (invalid)",
395		/* 10 */ "Symbolic Link",
396		/* 11 */ "11 (invalid)",
397		/* 12 */ "Socket",
398		/* 13 */ "Door",
399		/* 14 */ "Event Port",
400		/* 15 */ "15 (invalid)",
401	};
402
403	dump_zap_stats(os, object);
404	(void) printf("\n");
405
406	for (zap_cursor_init(&zc, os, object);
407	    zap_cursor_retrieve(&zc, &attr) == 0;
408	    zap_cursor_advance(&zc)) {
409		(void) printf("\t\t%s = %lld (type: %s)\n",
410		    attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
411		    typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
412	}
413	zap_cursor_fini(&zc);
414}
415
416static void
417dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm)
418{
419	uint64_t alloc, offset, entry;
420	uint8_t mapshift = sm->sm_shift;
421	uint64_t mapstart = sm->sm_start;
422	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
423			    "INVALID", "INVALID", "INVALID", "INVALID" };
424
425	if (smo->smo_object == 0)
426		return;
427
428	/*
429	 * Print out the freelist entries in both encoded and decoded form.
430	 */
431	alloc = 0;
432	for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) {
433		VERIFY(0 == dmu_read(os, smo->smo_object, offset,
434		    sizeof (entry), &entry));
435		if (SM_DEBUG_DECODE(entry)) {
436			(void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n",
437			    (u_longlong_t)(offset / sizeof (entry)),
438			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
439			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
440			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
441		} else {
442			(void) printf("\t\t[%4llu]    %c  range:"
443			    " %08llx-%08llx  size: %06llx\n",
444			    (u_longlong_t)(offset / sizeof (entry)),
445			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
446			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
447			    mapshift) + mapstart),
448			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
449			    mapshift) + mapstart + (SM_RUN_DECODE(entry) <<
450			    mapshift)),
451			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
452			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
453				alloc += SM_RUN_DECODE(entry) << mapshift;
454			else
455				alloc -= SM_RUN_DECODE(entry) << mapshift;
456		}
457	}
458	if (alloc != smo->smo_alloc) {
459		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
460		    "with space map summary (%llu)\n",
461		    (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc);
462	}
463}
464
465static void
466dump_metaslab(metaslab_t *msp)
467{
468	char freebuf[5];
469	space_map_obj_t *smo = &msp->ms_smo;
470	vdev_t *vd = msp->ms_group->mg_vd;
471	spa_t *spa = vd->vdev_spa;
472
473	nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf);
474
475	if (dump_opt['d'] <= 5) {
476		(void) printf("\t%10llx   %10llu   %5s\n",
477		    (u_longlong_t)msp->ms_map.sm_start,
478		    (u_longlong_t)smo->smo_object,
479		    freebuf);
480		return;
481	}
482
483	(void) printf(
484	    "\tvdev %llu   offset %08llx   spacemap %4llu   free %5s\n",
485	    (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start,
486	    (u_longlong_t)smo->smo_object, freebuf);
487
488	ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift));
489
490	dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map);
491}
492
493static void
494dump_metaslabs(spa_t *spa)
495{
496	vdev_t *rvd = spa->spa_root_vdev;
497	vdev_t *vd;
498	int c, m;
499
500	(void) printf("\nMetaslabs:\n");
501
502	for (c = 0; c < rvd->vdev_children; c++) {
503		vd = rvd->vdev_child[c];
504
505		(void) printf("\n    vdev %llu\n\n", (u_longlong_t)vd->vdev_id);
506
507		if (dump_opt['d'] <= 5) {
508			(void) printf("\t%10s   %10s   %5s\n",
509			    "offset", "spacemap", "free");
510			(void) printf("\t%10s   %10s   %5s\n",
511			    "------", "--------", "----");
512		}
513		for (m = 0; m < vd->vdev_ms_count; m++)
514			dump_metaslab(vd->vdev_ms[m]);
515		(void) printf("\n");
516	}
517}
518
519static void
520dump_dtl(vdev_t *vd, int indent)
521{
522	avl_tree_t *t = &vd->vdev_dtl_map.sm_root;
523	space_seg_t *ss;
524	vdev_t *pvd;
525	int c;
526
527	if (indent == 0)
528		(void) printf("\nDirty time logs:\n\n");
529
530	(void) printf("\t%*s%s\n", indent, "",
531	    vd->vdev_path ? vd->vdev_path :
532	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type :
533	    spa_name(vd->vdev_spa));
534
535	for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) {
536		/*
537		 * Everything in this DTL must appear in all parent DTL unions.
538		 */
539		for (pvd = vd; pvd; pvd = pvd->vdev_parent)
540			ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map,
541			    ss->ss_start, ss->ss_end - ss->ss_start));
542		(void) printf("\t%*soutage [%llu,%llu] length %llu\n",
543		    indent, "",
544		    (u_longlong_t)ss->ss_start,
545		    (u_longlong_t)ss->ss_end - 1,
546		    (u_longlong_t)(ss->ss_end - ss->ss_start));
547	}
548
549	(void) printf("\n");
550
551	if (dump_opt['d'] > 5 && vd->vdev_children == 0) {
552		dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl,
553		    &vd->vdev_dtl_map);
554		(void) printf("\n");
555	}
556
557	for (c = 0; c < vd->vdev_children; c++)
558		dump_dtl(vd->vdev_child[c], indent + 4);
559}
560
561/*ARGSUSED*/
562static void
563dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
564{
565}
566
567static uint64_t
568blkid2offset(const dnode_phys_t *dnp, int level, uint64_t blkid)
569{
570	if (level < 0)
571		return (blkid);
572
573	return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
574	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
575}
576
577static void
578sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas)
579{
580	dva_t *dva = bp->blk_dva;
581	int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1;
582	int i;
583
584	blkbuf[0] = '\0';
585
586	for (i = 0; i < ndvas; i++)
587		(void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
588		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
589		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
590		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
591
592	(void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu",
593	    (u_longlong_t)BP_GET_LSIZE(bp),
594	    (u_longlong_t)BP_GET_PSIZE(bp),
595	    (u_longlong_t)bp->blk_fill,
596	    (u_longlong_t)bp->blk_birth);
597}
598
599static void
600print_indirect(blkptr_t *bp, const zbookmark_t *zb,
601    const dnode_phys_t *dnp)
602{
603	char blkbuf[BP_SPRINTF_LEN];
604	int l;
605
606	ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
607	ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
608
609	(void) printf("%16llx ",
610	    (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid));
611
612	ASSERT(zb->zb_level >= 0);
613
614	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
615		if (l == zb->zb_level) {
616			(void) printf("L%llx", (u_longlong_t)zb->zb_level);
617		} else {
618			(void) printf(" ");
619		}
620	}
621
622	sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
623	(void) printf("%s\n", blkbuf);
624}
625
626#define	SET_BOOKMARK(zb, objset, object, level, blkid)  \
627{                                                       \
628	(zb)->zb_objset = objset;                       \
629	(zb)->zb_object = object;                       \
630	(zb)->zb_level = level;                         \
631	(zb)->zb_blkid = blkid;                         \
632}
633
634static int
635visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
636    blkptr_t *bp, const zbookmark_t *zb)
637{
638	int err;
639
640	if (bp->blk_birth == 0)
641		return (0);
642
643	print_indirect(bp, zb, dnp);
644
645	if (BP_GET_LEVEL(bp) > 0) {
646		uint32_t flags = ARC_WAIT;
647		int i;
648		blkptr_t *cbp;
649		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
650		arc_buf_t *buf;
651		uint64_t fill = 0;
652
653		err = arc_read_nolock(NULL, spa, bp, arc_getbuf_func, &buf,
654		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
655		if (err)
656			return (err);
657
658		/* recursively visit blocks below this */
659		cbp = buf->b_data;
660		for (i = 0; i < epb; i++, cbp++) {
661			zbookmark_t czb;
662
663			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
664			    zb->zb_level - 1,
665			    zb->zb_blkid * epb + i);
666			err = visit_indirect(spa, dnp, cbp, &czb);
667			if (err)
668				break;
669			fill += cbp->blk_fill;
670		}
671		ASSERT3U(fill, ==, bp->blk_fill);
672		(void) arc_buf_remove_ref(buf, &buf);
673	}
674
675	return (err);
676}
677
678/*ARGSUSED*/
679static void
680dump_indirect(dnode_t *dn)
681{
682	dnode_phys_t *dnp = dn->dn_phys;
683	int j;
684	zbookmark_t czb;
685
686	(void) printf("Indirect blocks:\n");
687
688	SET_BOOKMARK(&czb, dmu_objset_id(&dn->dn_objset->os),
689	    dn->dn_object, dnp->dn_nlevels - 1, 0);
690	for (j = 0; j < dnp->dn_nblkptr; j++) {
691		czb.zb_blkid = j;
692		(void) visit_indirect(dmu_objset_spa(&dn->dn_objset->os), dnp,
693		    &dnp->dn_blkptr[j], &czb);
694	}
695
696	(void) printf("\n");
697}
698
699/*ARGSUSED*/
700static void
701dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
702{
703	dsl_dir_phys_t *dd = data;
704	time_t crtime;
705	char nice[6];
706
707	if (dd == NULL)
708		return;
709
710	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
711
712	crtime = dd->dd_creation_time;
713	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
714	(void) printf("\t\thead_dataset_obj = %llu\n",
715	    (u_longlong_t)dd->dd_head_dataset_obj);
716	(void) printf("\t\tparent_dir_obj = %llu\n",
717	    (u_longlong_t)dd->dd_parent_obj);
718	(void) printf("\t\torigin_obj = %llu\n",
719	    (u_longlong_t)dd->dd_origin_obj);
720	(void) printf("\t\tchild_dir_zapobj = %llu\n",
721	    (u_longlong_t)dd->dd_child_dir_zapobj);
722	nicenum(dd->dd_used_bytes, nice);
723	(void) printf("\t\tused_bytes = %s\n", nice);
724	nicenum(dd->dd_compressed_bytes, nice);
725	(void) printf("\t\tcompressed_bytes = %s\n", nice);
726	nicenum(dd->dd_uncompressed_bytes, nice);
727	(void) printf("\t\tuncompressed_bytes = %s\n", nice);
728	nicenum(dd->dd_quota, nice);
729	(void) printf("\t\tquota = %s\n", nice);
730	nicenum(dd->dd_reserved, nice);
731	(void) printf("\t\treserved = %s\n", nice);
732	(void) printf("\t\tprops_zapobj = %llu\n",
733	    (u_longlong_t)dd->dd_props_zapobj);
734	(void) printf("\t\tdeleg_zapobj = %llu\n",
735	    (u_longlong_t)dd->dd_deleg_zapobj);
736	(void) printf("\t\tflags = %llx\n",
737	    (u_longlong_t)dd->dd_flags);
738
739#define	DO(which) \
740	nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
741	(void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
742	DO(HEAD);
743	DO(SNAP);
744	DO(CHILD);
745	DO(CHILD_RSRV);
746	DO(REFRSRV);
747#undef DO
748}
749
750/*ARGSUSED*/
751static void
752dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
753{
754	dsl_dataset_phys_t *ds = data;
755	time_t crtime;
756	char used[6], compressed[6], uncompressed[6], unique[6];
757	char blkbuf[BP_SPRINTF_LEN];
758
759	if (ds == NULL)
760		return;
761
762	ASSERT(size == sizeof (*ds));
763	crtime = ds->ds_creation_time;
764	nicenum(ds->ds_used_bytes, used);
765	nicenum(ds->ds_compressed_bytes, compressed);
766	nicenum(ds->ds_uncompressed_bytes, uncompressed);
767	nicenum(ds->ds_unique_bytes, unique);
768	sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp);
769
770	(void) printf("\t\tdir_obj = %llu\n",
771	    (u_longlong_t)ds->ds_dir_obj);
772	(void) printf("\t\tprev_snap_obj = %llu\n",
773	    (u_longlong_t)ds->ds_prev_snap_obj);
774	(void) printf("\t\tprev_snap_txg = %llu\n",
775	    (u_longlong_t)ds->ds_prev_snap_txg);
776	(void) printf("\t\tnext_snap_obj = %llu\n",
777	    (u_longlong_t)ds->ds_next_snap_obj);
778	(void) printf("\t\tsnapnames_zapobj = %llu\n",
779	    (u_longlong_t)ds->ds_snapnames_zapobj);
780	(void) printf("\t\tnum_children = %llu\n",
781	    (u_longlong_t)ds->ds_num_children);
782	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
783	(void) printf("\t\tcreation_txg = %llu\n",
784	    (u_longlong_t)ds->ds_creation_txg);
785	(void) printf("\t\tdeadlist_obj = %llu\n",
786	    (u_longlong_t)ds->ds_deadlist_obj);
787	(void) printf("\t\tused_bytes = %s\n", used);
788	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
789	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
790	(void) printf("\t\tunique = %s\n", unique);
791	(void) printf("\t\tfsid_guid = %llu\n",
792	    (u_longlong_t)ds->ds_fsid_guid);
793	(void) printf("\t\tguid = %llu\n",
794	    (u_longlong_t)ds->ds_guid);
795	(void) printf("\t\tflags = %llx\n",
796	    (u_longlong_t)ds->ds_flags);
797	(void) printf("\t\tnext_clones_obj = %llu\n",
798	    (u_longlong_t)ds->ds_next_clones_obj);
799	(void) printf("\t\tprops_obj = %llu\n",
800	    (u_longlong_t)ds->ds_props_obj);
801	(void) printf("\t\tbp = %s\n", blkbuf);
802}
803
804static void
805dump_bplist(objset_t *mos, uint64_t object, char *name)
806{
807	bplist_t bpl = { 0 };
808	blkptr_t blk, *bp = &blk;
809	uint64_t itor = 0;
810	char bytes[6];
811	char comp[6];
812	char uncomp[6];
813
814	if (dump_opt['d'] < 3)
815		return;
816
817	mutex_init(&bpl.bpl_lock, NULL, MUTEX_DEFAULT, NULL);
818	VERIFY(0 == bplist_open(&bpl, mos, object));
819	if (bplist_empty(&bpl)) {
820		bplist_close(&bpl);
821		mutex_destroy(&bpl.bpl_lock);
822		return;
823	}
824
825	nicenum(bpl.bpl_phys->bpl_bytes, bytes);
826	if (bpl.bpl_dbuf->db_size == sizeof (bplist_phys_t)) {
827		nicenum(bpl.bpl_phys->bpl_comp, comp);
828		nicenum(bpl.bpl_phys->bpl_uncomp, uncomp);
829		(void) printf("\n    %s: %llu entries, %s (%s/%s comp)\n",
830		    name, (u_longlong_t)bpl.bpl_phys->bpl_entries,
831		    bytes, comp, uncomp);
832	} else {
833		(void) printf("\n    %s: %llu entries, %s\n",
834		    name, (u_longlong_t)bpl.bpl_phys->bpl_entries, bytes);
835	}
836
837	if (dump_opt['d'] < 5) {
838		bplist_close(&bpl);
839		mutex_destroy(&bpl.bpl_lock);
840		return;
841	}
842
843	(void) printf("\n");
844
845	while (bplist_iterate(&bpl, &itor, bp) == 0) {
846		char blkbuf[BP_SPRINTF_LEN];
847
848		ASSERT(bp->blk_birth != 0);
849		sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0);
850		(void) printf("\tItem %3llu: %s\n",
851		    (u_longlong_t)itor - 1, blkbuf);
852	}
853
854	bplist_close(&bpl);
855	mutex_destroy(&bpl.bpl_lock);
856}
857
858static avl_tree_t idx_tree;
859static avl_tree_t domain_tree;
860static boolean_t fuid_table_loaded;
861
862static void
863fuid_table_destroy()
864{
865	if (fuid_table_loaded) {
866		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
867		fuid_table_loaded = B_FALSE;
868	}
869}
870
871/*
872 * print uid or gid information.
873 * For normal POSIX id just the id is printed in decimal format.
874 * For CIFS files with FUID the fuid is printed in hex followed by
875 * the doman-rid string.
876 */
877static void
878print_idstr(uint64_t id, const char *id_type)
879{
880	if (FUID_INDEX(id)) {
881		char *domain;
882
883		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
884		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
885		    (u_longlong_t)id, domain, (int)FUID_RID(id));
886	} else {
887		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
888	}
889
890}
891
892static void
893dump_uidgid(objset_t *os, znode_phys_t *zp)
894{
895	uint32_t uid_idx, gid_idx;
896
897	uid_idx = FUID_INDEX(zp->zp_uid);
898	gid_idx = FUID_INDEX(zp->zp_gid);
899
900	/* Load domain table, if not already loaded */
901	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
902		uint64_t fuid_obj;
903
904		/* first find the fuid object.  It lives in the master node */
905		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
906		    8, 1, &fuid_obj) == 0);
907		(void) zfs_fuid_table_load(os, fuid_obj,
908		    &idx_tree, &domain_tree);
909		fuid_table_loaded = B_TRUE;
910	}
911
912	print_idstr(zp->zp_uid, "uid");
913	print_idstr(zp->zp_gid, "gid");
914}
915
916/*ARGSUSED*/
917static void
918dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
919{
920	znode_phys_t *zp = data;
921	time_t z_crtime, z_atime, z_mtime, z_ctime;
922	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
923	int error;
924
925	ASSERT(size >= sizeof (znode_phys_t));
926
927	error = zfs_obj_to_path(os, object, path, sizeof (path));
928	if (error != 0) {
929		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
930		    (u_longlong_t)object);
931	}
932
933	if (dump_opt['d'] < 3) {
934		(void) printf("\t%s\n", path);
935		return;
936	}
937
938	z_crtime = (time_t)zp->zp_crtime[0];
939	z_atime = (time_t)zp->zp_atime[0];
940	z_mtime = (time_t)zp->zp_mtime[0];
941	z_ctime = (time_t)zp->zp_ctime[0];
942
943	(void) printf("\tpath	%s\n", path);
944	dump_uidgid(os, zp);
945	(void) printf("\tatime	%s", ctime(&z_atime));
946	(void) printf("\tmtime	%s", ctime(&z_mtime));
947	(void) printf("\tctime	%s", ctime(&z_ctime));
948	(void) printf("\tcrtime	%s", ctime(&z_crtime));
949	(void) printf("\tgen	%llu\n", (u_longlong_t)zp->zp_gen);
950	(void) printf("\tmode	%llo\n", (u_longlong_t)zp->zp_mode);
951	(void) printf("\tsize	%llu\n", (u_longlong_t)zp->zp_size);
952	(void) printf("\tparent	%llu\n", (u_longlong_t)zp->zp_parent);
953	(void) printf("\tlinks	%llu\n", (u_longlong_t)zp->zp_links);
954	(void) printf("\txattr	%llu\n", (u_longlong_t)zp->zp_xattr);
955	(void) printf("\trdev	0x%016llx\n", (u_longlong_t)zp->zp_rdev);
956}
957
958/*ARGSUSED*/
959static void
960dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
961{
962}
963
964/*ARGSUSED*/
965static void
966dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
967{
968}
969
970static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = {
971	dump_none,		/* unallocated			*/
972	dump_zap,		/* object directory		*/
973	dump_uint64,		/* object array			*/
974	dump_none,		/* packed nvlist		*/
975	dump_packed_nvlist,	/* packed nvlist size		*/
976	dump_none,		/* bplist			*/
977	dump_none,		/* bplist header		*/
978	dump_none,		/* SPA space map header		*/
979	dump_none,		/* SPA space map		*/
980	dump_none,		/* ZIL intent log		*/
981	dump_dnode,		/* DMU dnode			*/
982	dump_dmu_objset,	/* DMU objset			*/
983	dump_dsl_dir,		/* DSL directory		*/
984	dump_zap,		/* DSL directory child map	*/
985	dump_zap,		/* DSL dataset snap map		*/
986	dump_zap,		/* DSL props			*/
987	dump_dsl_dataset,	/* DSL dataset			*/
988	dump_znode,		/* ZFS znode			*/
989	dump_acl,		/* ZFS V0 ACL			*/
990	dump_uint8,		/* ZFS plain file		*/
991	dump_zpldir,		/* ZFS directory		*/
992	dump_zap,		/* ZFS master node		*/
993	dump_zap,		/* ZFS delete queue		*/
994	dump_uint8,		/* zvol object			*/
995	dump_zap,		/* zvol prop			*/
996	dump_uint8,		/* other uint8[]		*/
997	dump_uint64,		/* other uint64[]		*/
998	dump_zap,		/* other ZAP			*/
999	dump_zap,		/* persistent error log		*/
1000	dump_uint8,		/* SPA history			*/
1001	dump_uint64,		/* SPA history offsets		*/
1002	dump_zap,		/* Pool properties		*/
1003	dump_zap,		/* DSL permissions		*/
1004	dump_acl,		/* ZFS ACL			*/
1005	dump_uint8,		/* ZFS SYSACL			*/
1006	dump_none,		/* FUID nvlist			*/
1007	dump_packed_nvlist,	/* FUID nvlist size		*/
1008	dump_zap,		/* DSL dataset next clones	*/
1009	dump_zap,		/* DSL scrub queue		*/
1010};
1011
1012static void
1013dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1014{
1015	dmu_buf_t *db = NULL;
1016	dmu_object_info_t doi;
1017	dnode_t *dn;
1018	void *bonus = NULL;
1019	size_t bsize = 0;
1020	char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6];
1021	char aux[50];
1022	int error;
1023
1024	if (*print_header) {
1025		(void) printf("\n    Object  lvl   iblk   dblk  lsize"
1026		    "  asize  type\n");
1027		*print_header = 0;
1028	}
1029
1030	if (object == 0) {
1031		dn = os->os->os_meta_dnode;
1032	} else {
1033		error = dmu_bonus_hold(os, object, FTAG, &db);
1034		if (error)
1035			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1036			    object, error);
1037		bonus = db->db_data;
1038		bsize = db->db_size;
1039		dn = ((dmu_buf_impl_t *)db)->db_dnode;
1040	}
1041	dmu_object_info_from_dnode(dn, &doi);
1042
1043	nicenum(doi.doi_metadata_block_size, iblk);
1044	nicenum(doi.doi_data_block_size, dblk);
1045	nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1),
1046	    lsize);
1047	nicenum(doi.doi_physical_blks << 9, asize);
1048	nicenum(doi.doi_bonus_size, bonus_size);
1049
1050	aux[0] = '\0';
1051
1052	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1053		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1054		    zio_checksum_table[doi.doi_checksum].ci_name);
1055	}
1056
1057	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1058		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1059		    zio_compress_table[doi.doi_compress].ci_name);
1060	}
1061
1062	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %s%s\n",
1063	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize,
1064	    asize, dmu_ot[doi.doi_type].ot_name, aux);
1065
1066	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1067		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %s\n",
1068		    "", "", "", "", bonus_size, "bonus",
1069		    dmu_ot[doi.doi_bonus_type].ot_name);
1070	}
1071
1072	if (verbosity >= 4) {
1073		object_viewer[doi.doi_bonus_type](os, object, bonus, bsize);
1074		object_viewer[doi.doi_type](os, object, NULL, 0);
1075		*print_header = 1;
1076	}
1077
1078	if (verbosity >= 5)
1079		dump_indirect(dn);
1080
1081	if (verbosity >= 5) {
1082		/*
1083		 * Report the list of segments that comprise the object.
1084		 */
1085		uint64_t start = 0;
1086		uint64_t end;
1087		uint64_t blkfill = 1;
1088		int minlvl = 1;
1089
1090		if (dn->dn_type == DMU_OT_DNODE) {
1091			minlvl = 0;
1092			blkfill = DNODES_PER_BLOCK;
1093		}
1094
1095		for (;;) {
1096			error = dnode_next_offset(dn,
1097			    0, &start, minlvl, blkfill, 0);
1098			if (error)
1099				break;
1100			end = start;
1101			error = dnode_next_offset(dn,
1102			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1103			nicenum(end - start, segsize);
1104			(void) printf("\t\tsegment [%016llx, %016llx)"
1105			    " size %5s\n", (u_longlong_t)start,
1106			    (u_longlong_t)end, segsize);
1107			if (error)
1108				break;
1109			start = end;
1110		}
1111	}
1112
1113	if (db != NULL)
1114		dmu_buf_rele(db, FTAG);
1115}
1116
1117static char *objset_types[DMU_OST_NUMTYPES] = {
1118	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1119
1120static void
1121dump_dir(objset_t *os)
1122{
1123	dmu_objset_stats_t dds;
1124	uint64_t object, object_count;
1125	uint64_t refdbytes, usedobjs, scratch;
1126	char numbuf[8];
1127	char blkbuf[BP_SPRINTF_LEN];
1128	char osname[MAXNAMELEN];
1129	char *type = "UNKNOWN";
1130	int verbosity = dump_opt['d'];
1131	int print_header = 1;
1132	int i, error;
1133
1134	dmu_objset_fast_stat(os, &dds);
1135
1136	if (dds.dds_type < DMU_OST_NUMTYPES)
1137		type = objset_types[dds.dds_type];
1138
1139	if (dds.dds_type == DMU_OST_META) {
1140		dds.dds_creation_txg = TXG_INITIAL;
1141		usedobjs = os->os->os_rootbp->blk_fill;
1142		refdbytes = os->os->os_spa->spa_dsl_pool->
1143		    dp_mos_dir->dd_phys->dd_used_bytes;
1144	} else {
1145		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1146	}
1147
1148	ASSERT3U(usedobjs, ==, os->os->os_rootbp->blk_fill);
1149
1150	nicenum(refdbytes, numbuf);
1151
1152	if (verbosity >= 4) {
1153		(void) strcpy(blkbuf, ", rootbp ");
1154		sprintf_blkptr(blkbuf + strlen(blkbuf),
1155		    BP_SPRINTF_LEN - strlen(blkbuf), os->os->os_rootbp);
1156	} else {
1157		blkbuf[0] = '\0';
1158	}
1159
1160	dmu_objset_name(os, osname);
1161
1162	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1163	    "%s, %llu objects%s\n",
1164	    osname, type, (u_longlong_t)dmu_objset_id(os),
1165	    (u_longlong_t)dds.dds_creation_txg,
1166	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1167
1168	dump_intent_log(dmu_objset_zil(os));
1169
1170	if (dmu_objset_ds(os) != NULL)
1171		dump_bplist(dmu_objset_pool(os)->dp_meta_objset,
1172		    dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist");
1173
1174	if (verbosity < 2)
1175		return;
1176
1177	if (os->os->os_rootbp->blk_birth == 0)
1178		return;
1179
1180	if (zopt_objects != 0) {
1181		for (i = 0; i < zopt_objects; i++)
1182			dump_object(os, zopt_object[i], verbosity,
1183			    &print_header);
1184		(void) printf("\n");
1185		return;
1186	}
1187
1188	dump_object(os, 0, verbosity, &print_header);
1189	object_count = 1;
1190
1191	object = 0;
1192	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1193		dump_object(os, object, verbosity, &print_header);
1194		object_count++;
1195	}
1196
1197	ASSERT3U(object_count, ==, usedobjs);
1198
1199	(void) printf("\n");
1200
1201	if (error != ESRCH)
1202		fatal("dmu_object_next() = %d", error);
1203}
1204
1205static void
1206dump_uberblock(uberblock_t *ub)
1207{
1208	time_t timestamp = ub->ub_timestamp;
1209
1210	(void) printf("Uberblock\n\n");
1211	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1212	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1213	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1214	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1215	(void) printf("\ttimestamp = %llu UTC = %s",
1216	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1217	if (dump_opt['u'] >= 3) {
1218		char blkbuf[BP_SPRINTF_LEN];
1219		sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp);
1220		(void) printf("\trootbp = %s\n", blkbuf);
1221	}
1222	(void) printf("\n");
1223}
1224
1225static void
1226dump_config(const char *pool)
1227{
1228	spa_t *spa = NULL;
1229
1230	mutex_enter(&spa_namespace_lock);
1231	while ((spa = spa_next(spa)) != NULL) {
1232		if (pool == NULL)
1233			(void) printf("%s\n", spa_name(spa));
1234		if (pool == NULL || strcmp(pool, spa_name(spa)) == 0)
1235			dump_nvlist(spa->spa_config, 4);
1236	}
1237	mutex_exit(&spa_namespace_lock);
1238}
1239
1240static void
1241dump_cachefile(const char *cachefile)
1242{
1243	int fd;
1244	struct stat64 statbuf;
1245	char *buf;
1246	nvlist_t *config;
1247
1248	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1249		(void) printf("cannot open '%s': %s\n", cachefile,
1250		    strerror(errno));
1251		exit(1);
1252	}
1253
1254	if (fstat64(fd, &statbuf) != 0) {
1255		(void) printf("failed to stat '%s': %s\n", cachefile,
1256		    strerror(errno));
1257		exit(1);
1258	}
1259
1260	if ((buf = malloc(statbuf.st_size)) == NULL) {
1261		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1262		    (u_longlong_t)statbuf.st_size);
1263		exit(1);
1264	}
1265
1266	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1267		(void) fprintf(stderr, "failed to read %llu bytes\n",
1268		    (u_longlong_t)statbuf.st_size);
1269		exit(1);
1270	}
1271
1272	(void) close(fd);
1273
1274	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1275		(void) fprintf(stderr, "failed to unpack nvlist\n");
1276		exit(1);
1277	}
1278
1279	free(buf);
1280
1281	dump_nvlist(config, 0);
1282
1283	nvlist_free(config);
1284}
1285
1286static void
1287dump_label(const char *dev)
1288{
1289	int fd;
1290	vdev_label_t label;
1291	char *buf = label.vl_vdev_phys.vp_nvlist;
1292	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1293	struct stat64 statbuf;
1294	uint64_t psize;
1295	int l;
1296
1297	if ((fd = open64(dev, O_RDONLY)) < 0) {
1298		(void) printf("cannot open '%s': %s\n", dev, strerror(errno));
1299		exit(1);
1300	}
1301
1302	if (fstat64(fd, &statbuf) != 0) {
1303		(void) printf("failed to stat '%s': %s\n", dev,
1304		    strerror(errno));
1305		exit(1);
1306	}
1307
1308	psize = statbuf.st_size;
1309	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
1310
1311	for (l = 0; l < VDEV_LABELS; l++) {
1312
1313		nvlist_t *config = NULL;
1314
1315		(void) printf("--------------------------------------------\n");
1316		(void) printf("LABEL %d\n", l);
1317		(void) printf("--------------------------------------------\n");
1318
1319		if (pread64(fd, &label, sizeof (label),
1320		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
1321			(void) printf("failed to read label %d\n", l);
1322			continue;
1323		}
1324
1325		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
1326			(void) printf("failed to unpack label %d\n", l);
1327			continue;
1328		}
1329		dump_nvlist(config, 4);
1330		nvlist_free(config);
1331	}
1332}
1333
1334/*ARGSUSED*/
1335static int
1336dump_one_dir(char *dsname, void *arg)
1337{
1338	int error;
1339	objset_t *os;
1340
1341	error = dmu_objset_open(dsname, DMU_OST_ANY,
1342	    DS_MODE_USER | DS_MODE_READONLY, &os);
1343	if (error) {
1344		(void) printf("Could not open %s\n", dsname);
1345		return (0);
1346	}
1347	dump_dir(os);
1348	dmu_objset_close(os);
1349	fuid_table_destroy();
1350	return (0);
1351}
1352
1353static void
1354zdb_leak(space_map_t *sm, uint64_t start, uint64_t size)
1355{
1356	vdev_t *vd = sm->sm_ppd;
1357
1358	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
1359	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
1360}
1361
1362/* ARGSUSED */
1363static void
1364zdb_space_map_load(space_map_t *sm)
1365{
1366}
1367
1368static void
1369zdb_space_map_unload(space_map_t *sm)
1370{
1371	space_map_vacate(sm, zdb_leak, sm);
1372}
1373
1374/* ARGSUSED */
1375static void
1376zdb_space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
1377{
1378}
1379
1380static space_map_ops_t zdb_space_map_ops = {
1381	zdb_space_map_load,
1382	zdb_space_map_unload,
1383	NULL,	/* alloc */
1384	zdb_space_map_claim,
1385	NULL	/* free */
1386};
1387
1388static void
1389zdb_leak_init(spa_t *spa)
1390{
1391	vdev_t *rvd = spa->spa_root_vdev;
1392
1393	for (int c = 0; c < rvd->vdev_children; c++) {
1394		vdev_t *vd = rvd->vdev_child[c];
1395		for (int m = 0; m < vd->vdev_ms_count; m++) {
1396			metaslab_t *msp = vd->vdev_ms[m];
1397			mutex_enter(&msp->ms_lock);
1398			VERIFY(space_map_load(&msp->ms_map, &zdb_space_map_ops,
1399			    SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset) == 0);
1400			msp->ms_map.sm_ppd = vd;
1401			mutex_exit(&msp->ms_lock);
1402		}
1403	}
1404}
1405
1406static void
1407zdb_leak_fini(spa_t *spa)
1408{
1409	vdev_t *rvd = spa->spa_root_vdev;
1410
1411	for (int c = 0; c < rvd->vdev_children; c++) {
1412		vdev_t *vd = rvd->vdev_child[c];
1413		for (int m = 0; m < vd->vdev_ms_count; m++) {
1414			metaslab_t *msp = vd->vdev_ms[m];
1415			mutex_enter(&msp->ms_lock);
1416			space_map_unload(&msp->ms_map);
1417			mutex_exit(&msp->ms_lock);
1418		}
1419	}
1420}
1421
1422/*
1423 * Verify that the sum of the sizes of all blocks in the pool adds up
1424 * to the SPA's sa_alloc total.
1425 */
1426typedef struct zdb_blkstats {
1427	uint64_t	zb_asize;
1428	uint64_t	zb_lsize;
1429	uint64_t	zb_psize;
1430	uint64_t	zb_count;
1431} zdb_blkstats_t;
1432
1433#define	DMU_OT_DEFERRED	DMU_OT_NONE
1434#define	DMU_OT_TOTAL	DMU_OT_NUMTYPES
1435
1436#define	ZB_TOTAL	DN_MAX_LEVELS
1437
1438typedef struct zdb_cb {
1439	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1];
1440	uint64_t	zcb_errors[256];
1441	int		zcb_readfails;
1442	int		zcb_haderrors;
1443} zdb_cb_t;
1444
1445static void
1446zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, dmu_object_type_t type)
1447{
1448	for (int i = 0; i < 4; i++) {
1449		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
1450		int t = (i & 1) ? type : DMU_OT_TOTAL;
1451		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
1452
1453		zb->zb_asize += BP_GET_ASIZE(bp);
1454		zb->zb_lsize += BP_GET_LSIZE(bp);
1455		zb->zb_psize += BP_GET_PSIZE(bp);
1456		zb->zb_count++;
1457	}
1458
1459	if (dump_opt['S']) {
1460		boolean_t print_sig;
1461
1462		print_sig = !zdb_sig_user_data || (BP_GET_LEVEL(bp) == 0 &&
1463		    BP_GET_TYPE(bp) == DMU_OT_PLAIN_FILE_CONTENTS);
1464
1465		if (BP_GET_CHECKSUM(bp) < zdb_sig_cksumalg)
1466			print_sig = B_FALSE;
1467
1468		if (print_sig) {
1469			(void) printf("%llu\t%lld\t%lld\t%s\t%s\t%s\t"
1470			    "%llx:%llx:%llx:%llx\n",
1471			    (u_longlong_t)BP_GET_LEVEL(bp),
1472			    (longlong_t)BP_GET_PSIZE(bp),
1473			    (longlong_t)BP_GET_NDVAS(bp),
1474			    dmu_ot[BP_GET_TYPE(bp)].ot_name,
1475			    zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1476			    zio_compress_table[BP_GET_COMPRESS(bp)].ci_name,
1477			    (u_longlong_t)bp->blk_cksum.zc_word[0],
1478			    (u_longlong_t)bp->blk_cksum.zc_word[1],
1479			    (u_longlong_t)bp->blk_cksum.zc_word[2],
1480			    (u_longlong_t)bp->blk_cksum.zc_word[3]);
1481		}
1482	}
1483
1484	VERIFY(zio_wait(zio_claim(NULL, spa, spa_first_txg(spa), bp,
1485	    NULL, NULL, ZIO_FLAG_MUSTSUCCEED)) == 0);
1486}
1487
1488static int
1489zdb_blkptr_cb(spa_t *spa, blkptr_t *bp, const zbookmark_t *zb,
1490    const dnode_phys_t *dnp, void *arg)
1491{
1492	zdb_cb_t *zcb = arg;
1493	char blkbuf[BP_SPRINTF_LEN];
1494
1495	if (bp == NULL)
1496		return (0);
1497
1498	zdb_count_block(spa, zcb, bp, BP_GET_TYPE(bp));
1499
1500	if (dump_opt['c'] || dump_opt['S']) {
1501		int ioerr, size;
1502		void *data;
1503
1504		size = BP_GET_LSIZE(bp);
1505		data = malloc(size);
1506		ioerr = zio_wait(zio_read(NULL, spa, bp, data, size,
1507		    NULL, NULL, ZIO_PRIORITY_ASYNC_READ,
1508		    ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB, zb));
1509		free(data);
1510
1511		/* We expect io errors on intent log */
1512		if (ioerr && BP_GET_TYPE(bp) != DMU_OT_INTENT_LOG) {
1513			zcb->zcb_haderrors = 1;
1514			zcb->zcb_errors[ioerr]++;
1515
1516			if (dump_opt['b'] >= 2)
1517				sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1518			else
1519				blkbuf[0] = '\0';
1520
1521			if (!dump_opt['S']) {
1522				(void) printf("zdb_blkptr_cb: "
1523				    "Got error %d reading "
1524				    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
1525				    ioerr,
1526				    (u_longlong_t)zb->zb_objset,
1527				    (u_longlong_t)zb->zb_object,
1528				    (u_longlong_t)zb->zb_level,
1529				    (u_longlong_t)zb->zb_blkid,
1530				    blkbuf);
1531			}
1532		}
1533	}
1534
1535	zcb->zcb_readfails = 0;
1536
1537	if (dump_opt['b'] >= 4) {
1538		sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp);
1539		(void) printf("objset %llu object %llu offset 0x%llx %s\n",
1540		    (u_longlong_t)zb->zb_objset,
1541		    (u_longlong_t)zb->zb_object,
1542		    (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid),
1543		    blkbuf);
1544	}
1545
1546	return (0);
1547}
1548
1549static int
1550dump_block_stats(spa_t *spa)
1551{
1552	zdb_cb_t zcb = { 0 };
1553	zdb_blkstats_t *zb, *tzb;
1554	uint64_t alloc, space, logalloc;
1555	vdev_t *rvd = spa->spa_root_vdev;
1556	int leaks = 0;
1557	int c, e;
1558
1559	if (!dump_opt['S']) {
1560		(void) printf("\nTraversing all blocks to %sverify"
1561		    " nothing leaked ...\n",
1562		    dump_opt['c'] ? "verify checksums and " : "");
1563	}
1564
1565	/*
1566	 * Load all space maps as SM_ALLOC maps, then traverse the pool
1567	 * claiming each block we discover.  If the pool is perfectly
1568	 * consistent, the space maps will be empty when we're done.
1569	 * Anything left over is a leak; any block we can't claim (because
1570	 * it's not part of any space map) is a double allocation,
1571	 * reference to a freed block, or an unclaimed log block.
1572	 */
1573	zdb_leak_init(spa);
1574
1575	/*
1576	 * If there's a deferred-free bplist, process that first.
1577	 */
1578	if (spa->spa_sync_bplist_obj != 0) {
1579		bplist_t *bpl = &spa->spa_sync_bplist;
1580		blkptr_t blk;
1581		uint64_t itor = 0;
1582
1583		VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset,
1584		    spa->spa_sync_bplist_obj));
1585
1586		while (bplist_iterate(bpl, &itor, &blk) == 0) {
1587			if (dump_opt['b'] >= 4) {
1588				char blkbuf[BP_SPRINTF_LEN];
1589				sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk);
1590				(void) printf("[%s] %s\n",
1591				    "deferred free", blkbuf);
1592			}
1593			zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED);
1594		}
1595
1596		bplist_close(bpl);
1597	}
1598
1599	zcb.zcb_haderrors |= traverse_pool(spa, zdb_blkptr_cb, &zcb);
1600
1601	if (zcb.zcb_haderrors && !dump_opt['S']) {
1602		(void) printf("\nError counts:\n\n");
1603		(void) printf("\t%5s  %s\n", "errno", "count");
1604		for (e = 0; e < 256; e++) {
1605			if (zcb.zcb_errors[e] != 0) {
1606				(void) printf("\t%5d  %llu\n",
1607				    e, (u_longlong_t)zcb.zcb_errors[e]);
1608			}
1609		}
1610	}
1611
1612	/*
1613	 * Report any leaked segments.
1614	 */
1615	zdb_leak_fini(spa);
1616
1617	/*
1618	 * If we're interested in printing out the blkptr signatures,
1619	 * return now as we don't print out anything else (including
1620	 * errors and leaks).
1621	 */
1622	if (dump_opt['S'])
1623		return (zcb.zcb_haderrors ? 3 : 0);
1624
1625	alloc = spa_get_alloc(spa);
1626	space = spa_get_space(spa);
1627
1628	/*
1629	 * Log blocks allocated from a separate log device don't count
1630	 * as part of the normal pool space; factor them in here.
1631	 */
1632	logalloc = 0;
1633
1634	for (c = 0; c < rvd->vdev_children; c++)
1635		if (rvd->vdev_child[c]->vdev_islog)
1636			logalloc += rvd->vdev_child[c]->vdev_stat.vs_alloc;
1637
1638	tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL];
1639
1640	if (tzb->zb_asize == alloc + logalloc) {
1641		(void) printf("\n\tNo leaks (block sum matches space"
1642		    " maps exactly)\n");
1643	} else {
1644		(void) printf("block traversal size %llu != alloc %llu "
1645		    "(leaked %lld)\n",
1646		    (u_longlong_t)tzb->zb_asize,
1647		    (u_longlong_t)alloc + logalloc,
1648		    (u_longlong_t)(alloc + logalloc - tzb->zb_asize));
1649		leaks = 1;
1650	}
1651
1652	if (tzb->zb_count == 0)
1653		return (2);
1654
1655	(void) printf("\n");
1656	(void) printf("\tbp count:      %10llu\n",
1657	    (u_longlong_t)tzb->zb_count);
1658	(void) printf("\tbp logical:    %10llu\t avg: %6llu\n",
1659	    (u_longlong_t)tzb->zb_lsize,
1660	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
1661	(void) printf("\tbp physical:   %10llu\t avg:"
1662	    " %6llu\tcompression: %6.2f\n",
1663	    (u_longlong_t)tzb->zb_psize,
1664	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
1665	    (double)tzb->zb_lsize / tzb->zb_psize);
1666	(void) printf("\tbp allocated:  %10llu\t avg:"
1667	    " %6llu\tcompression: %6.2f\n",
1668	    (u_longlong_t)tzb->zb_asize,
1669	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
1670	    (double)tzb->zb_lsize / tzb->zb_asize);
1671	(void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n",
1672	    (u_longlong_t)alloc, 100.0 * alloc / space);
1673
1674	if (dump_opt['b'] >= 2) {
1675		int l, t, level;
1676		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
1677		    "\t  avg\t comp\t%%Total\tType\n");
1678
1679		for (t = 0; t <= DMU_OT_NUMTYPES; t++) {
1680			char csize[6], lsize[6], psize[6], asize[6], avg[6];
1681			char *typename;
1682
1683			typename = t == DMU_OT_DEFERRED ? "deferred free" :
1684			    t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name;
1685
1686			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
1687				(void) printf("%6s\t%5s\t%5s\t%5s"
1688				    "\t%5s\t%5s\t%6s\t%s\n",
1689				    "-",
1690				    "-",
1691				    "-",
1692				    "-",
1693				    "-",
1694				    "-",
1695				    "-",
1696				    typename);
1697				continue;
1698			}
1699
1700			for (l = ZB_TOTAL - 1; l >= -1; l--) {
1701				level = (l == -1 ? ZB_TOTAL : l);
1702				zb = &zcb.zcb_type[level][t];
1703
1704				if (zb->zb_asize == 0)
1705					continue;
1706
1707				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
1708					continue;
1709
1710				if (level == 0 && zb->zb_asize ==
1711				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
1712					continue;
1713
1714				nicenum(zb->zb_count, csize);
1715				nicenum(zb->zb_lsize, lsize);
1716				nicenum(zb->zb_psize, psize);
1717				nicenum(zb->zb_asize, asize);
1718				nicenum(zb->zb_asize / zb->zb_count, avg);
1719
1720				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
1721				    "\t%5.2f\t%6.2f\t",
1722				    csize, lsize, psize, asize, avg,
1723				    (double)zb->zb_lsize / zb->zb_psize,
1724				    100.0 * zb->zb_asize / tzb->zb_asize);
1725
1726				if (level == ZB_TOTAL)
1727					(void) printf("%s\n", typename);
1728				else
1729					(void) printf("    L%d %s\n",
1730					    level, typename);
1731			}
1732		}
1733	}
1734
1735	(void) printf("\n");
1736
1737	if (leaks)
1738		return (2);
1739
1740	if (zcb.zcb_haderrors)
1741		return (3);
1742
1743	return (0);
1744}
1745
1746static void
1747dump_zpool(spa_t *spa)
1748{
1749	dsl_pool_t *dp = spa_get_dsl(spa);
1750	int rc = 0;
1751
1752	if (dump_opt['u'])
1753		dump_uberblock(&spa->spa_uberblock);
1754
1755	if (dump_opt['d'] || dump_opt['i']) {
1756		dump_dir(dp->dp_meta_objset);
1757		if (dump_opt['d'] >= 3) {
1758			dump_bplist(dp->dp_meta_objset,
1759			    spa->spa_sync_bplist_obj, "Deferred frees");
1760			dump_dtl(spa->spa_root_vdev, 0);
1761			dump_metaslabs(spa);
1762		}
1763		(void) dmu_objset_find(spa_name(spa), dump_one_dir, NULL,
1764		    DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
1765	}
1766
1767	if (dump_opt['b'] || dump_opt['c'] || dump_opt['S'])
1768		rc = dump_block_stats(spa);
1769
1770	if (dump_opt['s'])
1771		show_pool_stats(spa);
1772
1773	if (rc != 0)
1774		exit(rc);
1775}
1776
1777#define	ZDB_FLAG_CHECKSUM	0x0001
1778#define	ZDB_FLAG_DECOMPRESS	0x0002
1779#define	ZDB_FLAG_BSWAP		0x0004
1780#define	ZDB_FLAG_GBH		0x0008
1781#define	ZDB_FLAG_INDIRECT	0x0010
1782#define	ZDB_FLAG_PHYS		0x0020
1783#define	ZDB_FLAG_RAW		0x0040
1784#define	ZDB_FLAG_PRINT_BLKPTR	0x0080
1785
1786int flagbits[256];
1787
1788static void
1789zdb_print_blkptr(blkptr_t *bp, int flags)
1790{
1791	dva_t *dva = bp->blk_dva;
1792	int d;
1793
1794	if (flags & ZDB_FLAG_BSWAP)
1795		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
1796	/*
1797	 * Super-ick warning:  This code is also duplicated in
1798	 * cmd/mdb/common/modules/zfs/zfs.c .  Yeah, I hate code
1799	 * replication, too.
1800	 */
1801	for (d = 0; d < BP_GET_NDVAS(bp); d++) {
1802		(void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d,
1803		    (longlong_t)DVA_GET_VDEV(&dva[d]),
1804		    (longlong_t)DVA_GET_OFFSET(&dva[d]));
1805		(void) printf("\tDVA[%d]:       GANG: %-5s  GRID:  %04llx\t"
1806		    "ASIZE: %llx\n", d,
1807		    DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE",
1808		    (longlong_t)DVA_GET_GRID(&dva[d]),
1809		    (longlong_t)DVA_GET_ASIZE(&dva[d]));
1810		(void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d,
1811		    (u_longlong_t)DVA_GET_VDEV(&dva[d]),
1812		    (longlong_t)DVA_GET_OFFSET(&dva[d]),
1813		    (longlong_t)BP_GET_PSIZE(bp),
1814		    BP_SHOULD_BYTESWAP(bp) ? "e" : "",
1815		    !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ?
1816		    "d" : "",
1817		    DVA_GET_GANG(&dva[d]) ? "g" : "",
1818		    BP_GET_COMPRESS(bp) != 0 ? "d" : "");
1819	}
1820	(void) printf("\tLSIZE:  %-16llx\t\tPSIZE: %llx\n",
1821	    (longlong_t)BP_GET_LSIZE(bp), (longlong_t)BP_GET_PSIZE(bp));
1822	(void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE:  %s\n",
1823	    BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG",
1824	    dmu_ot[BP_GET_TYPE(bp)].ot_name);
1825	(void) printf("\tBIRTH:  %-16llx   LEVEL: %-2llu\tFILL:  %llx\n",
1826	    (u_longlong_t)bp->blk_birth, (u_longlong_t)BP_GET_LEVEL(bp),
1827	    (u_longlong_t)bp->blk_fill);
1828	(void) printf("\tCKFUNC: %-16s\t\tCOMP:  %s\n",
1829	    zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name,
1830	    zio_compress_table[BP_GET_COMPRESS(bp)].ci_name);
1831	(void) printf("\tCKSUM:  %llx:%llx:%llx:%llx\n",
1832	    (u_longlong_t)bp->blk_cksum.zc_word[0],
1833	    (u_longlong_t)bp->blk_cksum.zc_word[1],
1834	    (u_longlong_t)bp->blk_cksum.zc_word[2],
1835	    (u_longlong_t)bp->blk_cksum.zc_word[3]);
1836}
1837
1838static void
1839zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
1840{
1841	int i;
1842
1843	for (i = 0; i < nbps; i++)
1844		zdb_print_blkptr(&bp[i], flags);
1845}
1846
1847static void
1848zdb_dump_gbh(void *buf, int flags)
1849{
1850	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
1851}
1852
1853static void
1854zdb_dump_block_raw(void *buf, uint64_t size, int flags)
1855{
1856	if (flags & ZDB_FLAG_BSWAP)
1857		byteswap_uint64_array(buf, size);
1858	(void) write(2, buf, size);
1859}
1860
1861static void
1862zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
1863{
1864	uint64_t *d = (uint64_t *)buf;
1865	int nwords = size / sizeof (uint64_t);
1866	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
1867	int i, j;
1868	char *hdr, *c;
1869
1870
1871	if (do_bswap)
1872		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
1873	else
1874		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
1875
1876	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
1877
1878	for (i = 0; i < nwords; i += 2) {
1879		(void) printf("%06llx:  %016llx  %016llx  ",
1880		    (u_longlong_t)(i * sizeof (uint64_t)),
1881		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
1882		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
1883
1884		c = (char *)&d[i];
1885		for (j = 0; j < 2 * sizeof (uint64_t); j++)
1886			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
1887		(void) printf("\n");
1888	}
1889}
1890
1891/*
1892 * There are two acceptable formats:
1893 *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
1894 *	child[.child]*    - For example: 0.1.1
1895 *
1896 * The second form can be used to specify arbitrary vdevs anywhere
1897 * in the heirarchy.  For example, in a pool with a mirror of
1898 * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
1899 */
1900static vdev_t *
1901zdb_vdev_lookup(vdev_t *vdev, char *path)
1902{
1903	char *s, *p, *q;
1904	int i;
1905
1906	if (vdev == NULL)
1907		return (NULL);
1908
1909	/* First, assume the x.x.x.x format */
1910	i = (int)strtoul(path, &s, 10);
1911	if (s == path || (s && *s != '.' && *s != '\0'))
1912		goto name;
1913	if (i < 0 || i >= vdev->vdev_children)
1914		return (NULL);
1915
1916	vdev = vdev->vdev_child[i];
1917	if (*s == '\0')
1918		return (vdev);
1919	return (zdb_vdev_lookup(vdev, s+1));
1920
1921name:
1922	for (i = 0; i < vdev->vdev_children; i++) {
1923		vdev_t *vc = vdev->vdev_child[i];
1924
1925		if (vc->vdev_path == NULL) {
1926			vc = zdb_vdev_lookup(vc, path);
1927			if (vc == NULL)
1928				continue;
1929			else
1930				return (vc);
1931		}
1932
1933		p = strrchr(vc->vdev_path, '/');
1934		p = p ? p + 1 : vc->vdev_path;
1935		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
1936
1937		if (strcmp(vc->vdev_path, path) == 0)
1938			return (vc);
1939		if (strcmp(p, path) == 0)
1940			return (vc);
1941		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
1942			return (vc);
1943	}
1944
1945	return (NULL);
1946}
1947
1948/*
1949 * Read a block from a pool and print it out.  The syntax of the
1950 * block descriptor is:
1951 *
1952 *	pool:vdev_specifier:offset:size[:flags]
1953 *
1954 *	pool           - The name of the pool you wish to read from
1955 *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
1956 *	offset         - offset, in hex, in bytes
1957 *	size           - Amount of data to read, in hex, in bytes
1958 *	flags          - A string of characters specifying options
1959 *		 b: Decode a blkptr at given offset within block
1960 *		*c: Calculate and display checksums
1961 *		*d: Decompress data before dumping
1962 *		 e: Byteswap data before dumping
1963 *		*g: Display data as a gang block header
1964 *		*i: Display as an indirect block
1965 *		 p: Do I/O to physical offset
1966 *		 r: Dump raw data to stdout
1967 *
1968 *              * = not yet implemented
1969 */
1970static void
1971zdb_read_block(char *thing, spa_t **spap)
1972{
1973	spa_t *spa = *spap;
1974	int flags = 0;
1975	uint64_t offset = 0, size = 0, blkptr_offset = 0;
1976	zio_t *zio;
1977	vdev_t *vd;
1978	void *buf;
1979	char *s, *p, *dup, *pool, *vdev, *flagstr;
1980	int i, error, zio_flags;
1981
1982	dup = strdup(thing);
1983	s = strtok(dup, ":");
1984	pool = s ? s : "";
1985	s = strtok(NULL, ":");
1986	vdev = s ? s : "";
1987	s = strtok(NULL, ":");
1988	offset = strtoull(s ? s : "", NULL, 16);
1989	s = strtok(NULL, ":");
1990	size = strtoull(s ? s : "", NULL, 16);
1991	s = strtok(NULL, ":");
1992	flagstr = s ? s : "";
1993
1994	s = NULL;
1995	if (size == 0)
1996		s = "size must not be zero";
1997	if (!IS_P2ALIGNED(size, DEV_BSIZE))
1998		s = "size must be a multiple of sector size";
1999	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
2000		s = "offset must be a multiple of sector size";
2001	if (s) {
2002		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
2003		free(dup);
2004		return;
2005	}
2006
2007	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
2008		for (i = 0; flagstr[i]; i++) {
2009			int bit = flagbits[(uchar_t)flagstr[i]];
2010
2011			if (bit == 0) {
2012				(void) printf("***Invalid flag: %c\n",
2013				    flagstr[i]);
2014				continue;
2015			}
2016			flags |= bit;
2017
2018			/* If it's not something with an argument, keep going */
2019			if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS |
2020			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
2021				continue;
2022
2023			p = &flagstr[i + 1];
2024			if (bit == ZDB_FLAG_PRINT_BLKPTR)
2025				blkptr_offset = strtoull(p, &p, 16);
2026			if (*p != ':' && *p != '\0') {
2027				(void) printf("***Invalid flag arg: '%s'\n", s);
2028				free(dup);
2029				return;
2030			}
2031		}
2032	}
2033
2034	if (spa == NULL || strcmp(spa_name(spa), pool) != 0) {
2035		if (spa)
2036			spa_close(spa, (void *)zdb_read_block);
2037		error = spa_open(pool, spap, (void *)zdb_read_block);
2038		if (error)
2039			fatal("Failed to open pool '%s': %s",
2040			    pool, strerror(error));
2041		spa = *spap;
2042	}
2043
2044	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
2045	if (vd == NULL) {
2046		(void) printf("***Invalid vdev: %s\n", vdev);
2047		free(dup);
2048		return;
2049	} else {
2050		if (vd->vdev_path)
2051			(void) printf("Found vdev: %s\n", vd->vdev_path);
2052		else
2053			(void) printf("Found vdev type: %s\n",
2054			    vd->vdev_ops->vdev_op_type);
2055	}
2056
2057	buf = umem_alloc(size, UMEM_NOFAIL);
2058
2059	zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
2060	    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY;
2061
2062	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
2063	zio = zio_root(spa, NULL, NULL, 0);
2064	/* XXX todo - cons up a BP so RAID-Z will be happy */
2065	zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size,
2066	    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL));
2067	error = zio_wait(zio);
2068	spa_config_exit(spa, SCL_STATE, FTAG);
2069
2070	if (error) {
2071		(void) printf("Read of %s failed, error: %d\n", thing, error);
2072		goto out;
2073	}
2074
2075	if (flags & ZDB_FLAG_PRINT_BLKPTR)
2076		zdb_print_blkptr((blkptr_t *)(void *)
2077		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
2078	else if (flags & ZDB_FLAG_RAW)
2079		zdb_dump_block_raw(buf, size, flags);
2080	else if (flags & ZDB_FLAG_INDIRECT)
2081		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
2082		    flags);
2083	else if (flags & ZDB_FLAG_GBH)
2084		zdb_dump_gbh(buf, flags);
2085	else
2086		zdb_dump_block(thing, buf, size, flags);
2087
2088out:
2089	umem_free(buf, size);
2090	free(dup);
2091}
2092
2093static boolean_t
2094nvlist_string_match(nvlist_t *config, char *name, char *tgt)
2095{
2096	char *s;
2097
2098	if (nvlist_lookup_string(config, name, &s) != 0)
2099		return (B_FALSE);
2100
2101	return (strcmp(s, tgt) == 0);
2102}
2103
2104static boolean_t
2105nvlist_uint64_match(nvlist_t *config, char *name, uint64_t tgt)
2106{
2107	uint64_t val;
2108
2109	if (nvlist_lookup_uint64(config, name, &val) != 0)
2110		return (B_FALSE);
2111
2112	return (val == tgt);
2113}
2114
2115static boolean_t
2116vdev_child_guid_match(nvlist_t *vdev, uint64_t guid)
2117{
2118	nvlist_t **child;
2119	uint_t c, children;
2120
2121	verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2122	    &child, &children) == 0);
2123	for (c = 0; c < children; ++c)
2124		if (nvlist_uint64_match(child[c], ZPOOL_CONFIG_GUID, guid))
2125			return (B_TRUE);
2126	return (B_FALSE);
2127}
2128
2129static boolean_t
2130vdev_child_string_match(nvlist_t *vdev, char *tgt)
2131{
2132	nvlist_t **child;
2133	uint_t c, children;
2134
2135	verify(nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN,
2136	    &child, &children) == 0);
2137	for (c = 0; c < children; ++c) {
2138		if (nvlist_string_match(child[c], ZPOOL_CONFIG_PATH, tgt) ||
2139		    nvlist_string_match(child[c], ZPOOL_CONFIG_DEVID, tgt))
2140			return (B_TRUE);
2141	}
2142	return (B_FALSE);
2143}
2144
2145static boolean_t
2146vdev_guid_match(nvlist_t *config, uint64_t guid)
2147{
2148	nvlist_t *nvroot;
2149
2150	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2151	    &nvroot) == 0);
2152
2153	return (nvlist_uint64_match(nvroot, ZPOOL_CONFIG_GUID, guid) ||
2154	    vdev_child_guid_match(nvroot, guid));
2155}
2156
2157static boolean_t
2158vdev_string_match(nvlist_t *config, char *tgt)
2159{
2160	nvlist_t *nvroot;
2161
2162	verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2163	    &nvroot) == 0);
2164
2165	return (vdev_child_string_match(nvroot, tgt));
2166}
2167
2168static boolean_t
2169pool_match(nvlist_t *config, char *tgt)
2170{
2171	uint64_t guid = strtoull(tgt, NULL, 0);
2172
2173	if (guid != 0) {
2174		return (
2175		    nvlist_uint64_match(config, ZPOOL_CONFIG_POOL_GUID, guid) ||
2176		    vdev_guid_match(config, guid));
2177	} else {
2178		return (
2179		    nvlist_string_match(config, ZPOOL_CONFIG_POOL_NAME, tgt) ||
2180		    vdev_string_match(config, tgt));
2181	}
2182}
2183
2184static int
2185find_exported_zpool(char *pool_id, nvlist_t **configp, char *vdev_dir)
2186{
2187	nvlist_t *pools;
2188	int error = ENOENT;
2189	nvlist_t *match = NULL;
2190
2191	if (vdev_dir != NULL)
2192		pools = zpool_find_import_activeok(g_zfs, 1, &vdev_dir);
2193	else
2194		pools = zpool_find_import_activeok(g_zfs, 0, NULL);
2195
2196	if (pools != NULL) {
2197		nvpair_t *elem = NULL;
2198
2199		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
2200			verify(nvpair_value_nvlist(elem, configp) == 0);
2201			if (pool_match(*configp, pool_id)) {
2202				if (match != NULL) {
2203					(void) fatal(
2204					    "More than one matching pool - "
2205					    "specify guid/devid/device path.");
2206				} else {
2207					match = *configp;
2208					error = 0;
2209				}
2210			}
2211		}
2212	}
2213
2214	*configp = error ? NULL : match;
2215
2216	return (error);
2217}
2218
2219int
2220main(int argc, char **argv)
2221{
2222	int i, c;
2223	struct rlimit rl = { 1024, 1024 };
2224	spa_t *spa;
2225	objset_t *os = NULL;
2226	char *endstr;
2227	int dump_all = 1;
2228	int verbose = 0;
2229	int error;
2230	int exported = 0;
2231	char *vdev_dir = NULL;
2232
2233	(void) setrlimit(RLIMIT_NOFILE, &rl);
2234	(void) enable_extended_FILE_stdio(-1, -1);
2235
2236	dprintf_setup(&argc, argv);
2237
2238	while ((c = getopt(argc, argv, "udibcsvCS:U:lRep:")) != -1) {
2239		switch (c) {
2240		case 'u':
2241		case 'd':
2242		case 'i':
2243		case 'b':
2244		case 'c':
2245		case 's':
2246		case 'C':
2247		case 'l':
2248		case 'R':
2249			dump_opt[c]++;
2250			dump_all = 0;
2251			break;
2252		case 'v':
2253			verbose++;
2254			break;
2255		case 'U':
2256			spa_config_path = optarg;
2257			break;
2258		case 'e':
2259			exported = 1;
2260			break;
2261		case 'p':
2262			vdev_dir = optarg;
2263			break;
2264		case 'S':
2265			dump_opt[c]++;
2266			dump_all = 0;
2267			zdb_sig_user_data = (strncmp(optarg, "user:", 5) == 0);
2268			if (!zdb_sig_user_data && strncmp(optarg, "all:", 4))
2269				usage();
2270			endstr = strchr(optarg, ':') + 1;
2271			if (strcmp(endstr, "fletcher2") == 0)
2272				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2273			else if (strcmp(endstr, "fletcher4") == 0)
2274				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_4;
2275			else if (strcmp(endstr, "sha256") == 0)
2276				zdb_sig_cksumalg = ZIO_CHECKSUM_SHA256;
2277			else if (strcmp(endstr, "all") == 0)
2278				zdb_sig_cksumalg = ZIO_CHECKSUM_FLETCHER_2;
2279			else
2280				usage();
2281			break;
2282		default:
2283			usage();
2284			break;
2285		}
2286	}
2287
2288	if (vdev_dir != NULL && exported == 0) {
2289		(void) fprintf(stderr, "-p option requires use of -e\n");
2290		usage();
2291	}
2292
2293	kernel_init(FREAD);
2294	g_zfs = libzfs_init();
2295	ASSERT(g_zfs != NULL);
2296
2297	for (c = 0; c < 256; c++) {
2298		if (dump_all && c != 'l' && c != 'R')
2299			dump_opt[c] = 1;
2300		if (dump_opt[c])
2301			dump_opt[c] += verbose;
2302	}
2303
2304	argc -= optind;
2305	argv += optind;
2306
2307	if (argc < 1) {
2308		if (dump_opt['C']) {
2309			dump_cachefile(spa_config_path);
2310			return (0);
2311		}
2312		usage();
2313	}
2314
2315	if (dump_opt['l']) {
2316		dump_label(argv[0]);
2317		return (0);
2318	}
2319
2320	if (dump_opt['R']) {
2321		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
2322		flagbits['c'] = ZDB_FLAG_CHECKSUM;
2323		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
2324		flagbits['e'] = ZDB_FLAG_BSWAP;
2325		flagbits['g'] = ZDB_FLAG_GBH;
2326		flagbits['i'] = ZDB_FLAG_INDIRECT;
2327		flagbits['p'] = ZDB_FLAG_PHYS;
2328		flagbits['r'] = ZDB_FLAG_RAW;
2329
2330		spa = NULL;
2331		while (argv[0]) {
2332			zdb_read_block(argv[0], &spa);
2333			argv++;
2334			argc--;
2335		}
2336		if (spa)
2337			spa_close(spa, (void *)zdb_read_block);
2338		return (0);
2339	}
2340
2341	if (dump_opt['C'])
2342		dump_config(argv[0]);
2343
2344	error = 0;
2345	if (exported) {
2346		/*
2347		 * Check to see if the name refers to an exported zpool
2348		 */
2349		char *slash;
2350		nvlist_t *exported_conf = NULL;
2351
2352		if ((slash = strchr(argv[0], '/')) != NULL)
2353			*slash = '\0';
2354
2355		error = find_exported_zpool(argv[0], &exported_conf, vdev_dir);
2356		if (error == 0) {
2357			nvlist_t *nvl = NULL;
2358
2359			if (vdev_dir != NULL) {
2360				if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
2361					error = ENOMEM;
2362				else if (nvlist_add_string(nvl,
2363				    zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
2364				    vdev_dir) != 0)
2365					error = ENOMEM;
2366			}
2367
2368			if (error == 0)
2369				error = spa_import_faulted(argv[0],
2370				    exported_conf, nvl);
2371
2372			nvlist_free(nvl);
2373		}
2374
2375		if (slash != NULL)
2376			*slash = '/';
2377	}
2378
2379	if (error == 0) {
2380		if (strchr(argv[0], '/') != NULL) {
2381			error = dmu_objset_open(argv[0], DMU_OST_ANY,
2382			    DS_MODE_USER | DS_MODE_READONLY, &os);
2383		} else {
2384			error = spa_open(argv[0], &spa, FTAG);
2385		}
2386	}
2387
2388	if (error)
2389		fatal("can't open %s: %s", argv[0], strerror(error));
2390
2391	argv++;
2392	if (--argc > 0) {
2393		zopt_objects = argc;
2394		zopt_object = calloc(zopt_objects, sizeof (uint64_t));
2395		for (i = 0; i < zopt_objects; i++) {
2396			errno = 0;
2397			zopt_object[i] = strtoull(argv[i], NULL, 0);
2398			if (zopt_object[i] == 0 && errno != 0)
2399				fatal("bad object number %s: %s",
2400				    argv[i], strerror(errno));
2401		}
2402	}
2403
2404	if (os != NULL) {
2405		dump_dir(os);
2406		dmu_objset_close(os);
2407	} else {
2408		dump_zpool(spa);
2409		spa_close(spa, FTAG);
2410	}
2411
2412	fuid_table_destroy();
2413
2414	libzfs_fini(g_zfs);
2415	kernel_fini();
2416
2417	return (0);
2418}
2419