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OpenZFS 9166 - zfs storage pool checkpoint
[mirror_zfs.git] / lib / libzfs / libzfs_pool.c
CommitLineData
34dc7c2f
BB		 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/*
0fdd8d64 23 * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
428870ff 24 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
74d42600 25 * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
23d70cde 26 * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>
2ffd89fc 27 * Copyright (c) 2018 Datto Inc.
d3f2cd7e 28 * Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
34dc7c2f
BB		 29 */
30
34dc7c2f
BB		 31#include <ctype.h>
32#include <errno.h>
33#include <devid.h>
34dc7c2f
BB		 34#include <fcntl.h>
35#include <libintl.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include <strings.h>
39#include <unistd.h>
6f1ffb06 40#include <libgen.h>
d603ed6c
BB		 41#include <zone.h>
42#include <sys/stat.h>
34dc7c2f 43#include <sys/efi_partition.h>
46364cb2 44#include <sys/systeminfo.h>
34dc7c2f
BB		 45#include <sys/vtoc.h>
46#include <sys/zfs_ioctl.h>
74d42600 47#include <sys/vdev_disk.h>
9babb374 48#include <dlfcn.h>
34dc7c2f
BB		 49
50#include "zfs_namecheck.h"
51#include "zfs_prop.h"
52#include "libzfs_impl.h"
428870ff 53#include "zfs_comutil.h"
9ae529ec 54#include "zfeature_common.h"
34dc7c2f 55
b128c09f 56static int read_efi_label(nvlist_t *config, diskaddr_t *sb);
1574c73b 57static boolean_t zpool_vdev_is_interior(const char *name);
b128c09f 58
572e2857
BB		 59typedef struct prop_flags {
60 int create:1; /* Validate property on creation */
61 int import:1; /* Validate property on import */
62} prop_flags_t;
63
34dc7c2f
BB		 64/*
65 * ====================================================================
66 * zpool property functions
67 * ====================================================================
68 */
69
70static int
71zpool_get_all_props(zpool_handle_t *zhp)
72{
13fe0198 73 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 74 libzfs_handle_t *hdl = zhp->zpool_hdl;
75
76 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
77
78 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
79 return (-1);
80
81 while (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_PROPS, &zc) != 0) {
82 if (errno == ENOMEM) {
83 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
84 zcmd_free_nvlists(&zc);
85 return (-1);
86 }
87 } else {
88 zcmd_free_nvlists(&zc);
89 return (-1);
90 }
91 }
92
93 if (zcmd_read_dst_nvlist(hdl, &zc, &zhp->zpool_props) != 0) {
94 zcmd_free_nvlists(&zc);
95 return (-1);
96 }
97
98 zcmd_free_nvlists(&zc);
99
100 return (0);
101}
102
103static int
104zpool_props_refresh(zpool_handle_t *zhp)
105{
106 nvlist_t *old_props;
107
108 old_props = zhp->zpool_props;
109
110 if (zpool_get_all_props(zhp) != 0)
111 return (-1);
112
113 nvlist_free(old_props);
114 return (0);
115}
116
6b8655ad 117static const char *
34dc7c2f
BB		 118zpool_get_prop_string(zpool_handle_t *zhp, zpool_prop_t prop,
119 zprop_source_t *src)
120{
121 nvlist_t *nv, *nvl;
122 uint64_t ival;
123 char *value;
124 zprop_source_t source;
125
126 nvl = zhp->zpool_props;
127 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) {
128 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &ival) == 0);
129 source = ival;
130 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0);
131 } else {
132 source = ZPROP_SRC_DEFAULT;
133 if ((value = (char *)zpool_prop_default_string(prop)) == NULL)
134 value = "-";
135 }
136
137 if (src)
138 *src = source;
139
140 return (value);
141}
142
143uint64_t
144zpool_get_prop_int(zpool_handle_t *zhp, zpool_prop_t prop, zprop_source_t *src)
145{
146 nvlist_t *nv, *nvl;
147 uint64_t value;
148 zprop_source_t source;
149
b128c09f
BB		 150 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp)) {
151 /*
152 * zpool_get_all_props() has most likely failed because
153 * the pool is faulted, but if all we need is the top level
154 * vdev's guid then get it from the zhp config nvlist.
155 */
156 if ((prop == ZPOOL_PROP_GUID) &&
157 (nvlist_lookup_nvlist(zhp->zpool_config,
158 ZPOOL_CONFIG_VDEV_TREE, &nv) == 0) &&
159 (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value)
160 == 0)) {
161 return (value);
162 }
34dc7c2f 163 return (zpool_prop_default_numeric(prop));
b128c09f 164 }
34dc7c2f
BB		 165
166 nvl = zhp->zpool_props;
167 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) {
168 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &value) == 0);
169 source = value;
170 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0);
171 } else {
172 source = ZPROP_SRC_DEFAULT;
173 value = zpool_prop_default_numeric(prop);
174 }
175
176 if (src)
177 *src = source;
178
179 return (value);
180}
181
182/*
183 * Map VDEV STATE to printed strings.
184 */
6b8655ad 185const char *
34dc7c2f
BB		 186zpool_state_to_name(vdev_state_t state, vdev_aux_t aux)
187{
188 switch (state) {
189 case VDEV_STATE_CLOSED:
190 case VDEV_STATE_OFFLINE:
191 return (gettext("OFFLINE"));
192 case VDEV_STATE_REMOVED:
193 return (gettext("REMOVED"));
194 case VDEV_STATE_CANT_OPEN:
b128c09f 195 if (aux == VDEV_AUX_CORRUPT_DATA || aux == VDEV_AUX_BAD_LOG)
34dc7c2f 196 return (gettext("FAULTED"));
428870ff
BB		 197 else if (aux == VDEV_AUX_SPLIT_POOL)
198 return (gettext("SPLIT"));
34dc7c2f
BB		 199 else
200 return (gettext("UNAVAIL"));
201 case VDEV_STATE_FAULTED:
202 return (gettext("FAULTED"));
203 case VDEV_STATE_DEGRADED:
204 return (gettext("DEGRADED"));
205 case VDEV_STATE_HEALTHY:
206 return (gettext("ONLINE"));
23d70cde
GM		 207
208 default:
209 break;
34dc7c2f
BB		 210 }
211
212 return (gettext("UNKNOWN"));
213}
214
131cc95c
DK		 215/*
216 * Map POOL STATE to printed strings.
217 */
218const char *
219zpool_pool_state_to_name(pool_state_t state)
220{
221 switch (state) {
222 default:
223 break;
224 case POOL_STATE_ACTIVE:
225 return (gettext("ACTIVE"));
226 case POOL_STATE_EXPORTED:
227 return (gettext("EXPORTED"));
228 case POOL_STATE_DESTROYED:
229 return (gettext("DESTROYED"));
230 case POOL_STATE_SPARE:
231 return (gettext("SPARE"));
232 case POOL_STATE_L2CACHE:
233 return (gettext("L2CACHE"));
234 case POOL_STATE_UNINITIALIZED:
235 return (gettext("UNINITIALIZED"));
236 case POOL_STATE_UNAVAIL:
237 return (gettext("UNAVAIL"));
238 case POOL_STATE_POTENTIALLY_ACTIVE:
239 return (gettext("POTENTIALLY_ACTIVE"));
240 }
241
242 return (gettext("UNKNOWN"));
243}
244
f0ed6c74
TH		 245/*
246 * Given a pool handle, return the pool health string ("ONLINE", "DEGRADED",
247 * "SUSPENDED", etc).
248 */
249const char *
250zpool_get_state_str(zpool_handle_t *zhp)
251{
252 zpool_errata_t errata;
253 zpool_status_t status;
254 nvlist_t *nvroot;
255 vdev_stat_t *vs;
256 uint_t vsc;
257 const char *str;
258
259 status = zpool_get_status(zhp, NULL, &errata);
260
261 if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) {
262 str = gettext("FAULTED");
263 } else if (status == ZPOOL_STATUS_IO_FAILURE_WAIT ||
264 status == ZPOOL_STATUS_IO_FAILURE_MMP) {
265 str = gettext("SUSPENDED");
266 } else {
267 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
268 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
269 verify(nvlist_lookup_uint64_array(nvroot,
270 ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc)
271 == 0);
272 str = zpool_state_to_name(vs->vs_state, vs->vs_aux);
273 }
274 return (str);
275}
276
8b921f66
RE		 277/*
278 * Get a zpool property value for 'prop' and return the value in
279 * a pre-allocated buffer.
280 */
281int
2a8b84b7 282zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf,
d1d7e268 283 size_t len, zprop_source_t *srctype, boolean_t literal)
34dc7c2f
BB		 284{
285 uint64_t intval;
286 const char *strval;
287 zprop_source_t src = ZPROP_SRC_NONE;
34dc7c2f
BB		 288
289 if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) {
d164b209
BB		 290 switch (prop) {
291 case ZPOOL_PROP_NAME:
34dc7c2f 292 (void) strlcpy(buf, zpool_get_name(zhp), len);
d164b209
BB		 293 break;
294
295 case ZPOOL_PROP_HEALTH:
f0ed6c74 296 (void) strlcpy(buf, zpool_get_state_str(zhp), len);
d164b209
BB		 297 break;
298
299 case ZPOOL_PROP_GUID:
300 intval = zpool_get_prop_int(zhp, prop, &src);
b8864a23 301 (void) snprintf(buf, len, "%llu", (u_longlong_t)intval);
d164b209
BB		 302 break;
303
304 case ZPOOL_PROP_ALTROOT:
305 case ZPOOL_PROP_CACHEFILE:
d96eb2b1 306 case ZPOOL_PROP_COMMENT:
d164b209
BB		 307 if (zhp->zpool_props != NULL ||
308 zpool_get_all_props(zhp) == 0) {
309 (void) strlcpy(buf,
310 zpool_get_prop_string(zhp, prop, &src),
311 len);
2a8b84b7 312 break;
d164b209
BB		 313 }
314 /* FALLTHROUGH */
315 default:
34dc7c2f 316 (void) strlcpy(buf, "-", len);
d164b209
BB		 317 break;
318 }
319
320 if (srctype != NULL)
321 *srctype = src;
34dc7c2f
BB		 322 return (0);
323 }
324
325 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp) &&
326 prop != ZPOOL_PROP_NAME)
327 return (-1);
328
329 switch (zpool_prop_get_type(prop)) {
330 case PROP_TYPE_STRING:
331 (void) strlcpy(buf, zpool_get_prop_string(zhp, prop, &src),
332 len);
333 break;
334
335 case PROP_TYPE_NUMBER:
336 intval = zpool_get_prop_int(zhp, prop, &src);
337
338 switch (prop) {
339 case ZPOOL_PROP_SIZE:
428870ff
BB		 340 case ZPOOL_PROP_ALLOCATED:
341 case ZPOOL_PROP_FREE:
9ae529ec 342 case ZPOOL_PROP_FREEING:
fbeddd60 343 case ZPOOL_PROP_LEAKED:
df30f566 344 case ZPOOL_PROP_ASHIFT:
8b921f66
RE		 345 if (literal)
346 (void) snprintf(buf, len, "%llu",
02730c33 347 (u_longlong_t)intval);
8b921f66
RE		 348 else
349 (void) zfs_nicenum(intval, buf, len);
34dc7c2f
BB		 350 break;
351
a05dfd00 352 case ZPOOL_PROP_EXPANDSZ:
d2734cce 353 case ZPOOL_PROP_CHECKPOINT:
a05dfd00
GW		 354 if (intval == 0) {
355 (void) strlcpy(buf, "-", len);
356 } else if (literal) {
357 (void) snprintf(buf, len, "%llu",
358 (u_longlong_t)intval);
359 } else {
e7fbeb60 360 (void) zfs_nicebytes(intval, buf, len);
a05dfd00
GW		 361 }
362 break;
363
34dc7c2f 364 case ZPOOL_PROP_CAPACITY:
2a8b84b7
AS		 365 if (literal) {
366 (void) snprintf(buf, len, "%llu",
367 (u_longlong_t)intval);
368 } else {
369 (void) snprintf(buf, len, "%llu%%",
370 (u_longlong_t)intval);
371 }
34dc7c2f
BB		 372 break;
373
1ca56e60 374 case ZPOOL_PROP_FRAGMENTATION:
375 if (intval == UINT64_MAX) {
376 (void) strlcpy(buf, "-", len);
bc2d8093
CE		 377 } else if (literal) {
378 (void) snprintf(buf, len, "%llu",
379 (u_longlong_t)intval);
1ca56e60 380 } else {
381 (void) snprintf(buf, len, "%llu%%",
382 (u_longlong_t)intval);
383 }
384 break;
385
428870ff 386 case ZPOOL_PROP_DEDUPRATIO:
bc2d8093
CE		 387 if (literal)
388 (void) snprintf(buf, len, "%llu.%02llu",
389 (u_longlong_t)(intval / 100),
390 (u_longlong_t)(intval % 100));
391 else
392 (void) snprintf(buf, len, "%llu.%02llux",
393 (u_longlong_t)(intval / 100),
394 (u_longlong_t)(intval % 100));
428870ff
BB		 395 break;
396
34dc7c2f 397 case ZPOOL_PROP_HEALTH:
f0ed6c74 398 (void) strlcpy(buf, zpool_get_state_str(zhp), len);
34dc7c2f 399 break;
9ae529ec
CS		 400 case ZPOOL_PROP_VERSION:
401 if (intval >= SPA_VERSION_FEATURES) {
402 (void) snprintf(buf, len, "-");
403 break;
404 }
405 /* FALLTHROUGH */
34dc7c2f 406 default:
b8864a23 407 (void) snprintf(buf, len, "%llu", (u_longlong_t)intval);
34dc7c2f
BB		 408 }
409 break;
410
411 case PROP_TYPE_INDEX:
412 intval = zpool_get_prop_int(zhp, prop, &src);
413 if (zpool_prop_index_to_string(prop, intval, &strval)
414 != 0)
415 return (-1);
416 (void) strlcpy(buf, strval, len);
417 break;
418
419 default:
420 abort();
421 }
422
423 if (srctype)
424 *srctype = src;
425
426 return (0);
427}
428
429/*
430 * Check if the bootfs name has the same pool name as it is set to.
431 * Assuming bootfs is a valid dataset name.
432 */
433static boolean_t
434bootfs_name_valid(const char *pool, char *bootfs)
435{
436 int len = strlen(pool);
387b6856
PD		 437 if (bootfs[0] == '\0')
438 return (B_TRUE);
34dc7c2f 439
b128c09f 440 if (!zfs_name_valid(bootfs, ZFS_TYPE_FILESYSTEM|ZFS_TYPE_SNAPSHOT))
34dc7c2f
BB		 441 return (B_FALSE);
442
443 if (strncmp(pool, bootfs, len) == 0 &&
444 (bootfs[len] == '/' || bootfs[len] == '\0'))
445 return (B_TRUE);
446
447 return (B_FALSE);
448}
449
1bd201e7
CS		 450boolean_t
451zpool_is_bootable(zpool_handle_t *zhp)
b128c09f 452{
eca7b760 453 char bootfs[ZFS_MAX_DATASET_NAME_LEN];
b128c09f
BB		 454
455 return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs,
2a8b84b7 456 sizeof (bootfs), NULL, B_FALSE) == 0 && strncmp(bootfs, "-",
b128c09f
BB		 457 sizeof (bootfs)) != 0);
458}
459
460
34dc7c2f
BB		 461/*
462 * Given an nvlist of zpool properties to be set, validate that they are
463 * correct, and parse any numeric properties (index, boolean, etc) if they are
464 * specified as strings.
465 */
466static nvlist_t *
b128c09f 467zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname,
572e2857 468 nvlist_t *props, uint64_t version, prop_flags_t flags, char *errbuf)
34dc7c2f
BB		 469{
470 nvpair_t *elem;
471 nvlist_t *retprops;
472 zpool_prop_t prop;
473 char *strval;
474 uint64_t intval;
d96eb2b1 475 char *slash, *check;
34dc7c2f 476 struct stat64 statbuf;
b128c09f 477 zpool_handle_t *zhp;
34dc7c2f
BB		 478
479 if (nvlist_alloc(&retprops, NV_UNIQUE_NAME, 0) != 0) {
480 (void) no_memory(hdl);
481 return (NULL);
482 }
483
484 elem = NULL;
485 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
486 const char *propname = nvpair_name(elem);
487
9ae529ec 488 prop = zpool_name_to_prop(propname);
31864e3d 489 if (prop == ZPOOL_PROP_INVAL && zpool_prop_feature(propname)) {
9ae529ec 490 int err;
9ae529ec
CS		 491 char *fname = strchr(propname, '@') + 1;
492
fa86b5db 493 err = zfeature_lookup_name(fname, NULL);
9ae529ec
CS		 494 if (err != 0) {
495 ASSERT3U(err, ==, ENOENT);
496 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
497 "invalid feature '%s'"), fname);
498 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
499 goto error;
500 }
501
502 if (nvpair_type(elem) != DATA_TYPE_STRING) {
503 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
504 "'%s' must be a string"), propname);
505 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
506 goto error;
507 }
508
509 (void) nvpair_value_string(elem, &strval);
e4010f27 510 if (strcmp(strval, ZFS_FEATURE_ENABLED) != 0 &&
511 strcmp(strval, ZFS_FEATURE_DISABLED) != 0) {
9ae529ec
CS		 512 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
513 "property '%s' can only be set to "
e4010f27 514 "'enabled' or 'disabled'"), propname);
9966754a 515 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
516 goto error;
517 }
518
519 if (!flags.create &&
520 strcmp(strval, ZFS_FEATURE_DISABLED) == 0) {
521 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
522 "property '%s' can only be set to "
523 "'disabled' at creation time"), propname);
9ae529ec
CS		 524 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
525 goto error;
526 }
527
528 if (nvlist_add_uint64(retprops, propname, 0) != 0) {
529 (void) no_memory(hdl);
530 goto error;
531 }
532 continue;
533 }
534
34dc7c2f
BB		 535 /*
536 * Make sure this property is valid and applies to this type.
537 */
31864e3d 538 if (prop == ZPOOL_PROP_INVAL) {
34dc7c2f
BB		 539 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
540 "invalid property '%s'"), propname);
541 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
542 goto error;
543 }
544
545 if (zpool_prop_readonly(prop)) {
546 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' "
547 "is readonly"), propname);
548 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf);
549 goto error;
550 }
551
552 if (zprop_parse_value(hdl, elem, prop, ZFS_TYPE_POOL, retprops,
553 &strval, &intval, errbuf) != 0)
554 goto error;
555
556 /*
557 * Perform additional checking for specific properties.
558 */
559 switch (prop) {
560 case ZPOOL_PROP_VERSION:
9ae529ec
CS		 561 if (intval < version ||
562 !SPA_VERSION_IS_SUPPORTED(intval)) {
34dc7c2f
BB		 563 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
564 "property '%s' number %d is invalid."),
565 propname, intval);
566 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
567 goto error;
568 }
569 break;
570
df30f566 571 case ZPOOL_PROP_ASHIFT:
ff61d1a4 572 if (intval != 0 &&
573 (intval < ASHIFT_MIN || intval > ASHIFT_MAX)) {
df30f566 574 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
ff61d1a4 575 "invalid '%s=%d' property: only values "
576 "between %" PRId32 " and %" PRId32 " "
577 "are allowed.\n"),
578 propname, intval, ASHIFT_MIN, ASHIFT_MAX);
df30f566
CK		 579 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
580 goto error;
581 }
582 break;
583
34dc7c2f 584 case ZPOOL_PROP_BOOTFS:
572e2857 585 if (flags.create || flags.import) {
34dc7c2f
BB		 586 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
587 "property '%s' cannot be set at creation "
588 "or import time"), propname);
589 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
590 goto error;
591 }
592
593 if (version < SPA_VERSION_BOOTFS) {
594 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
595 "pool must be upgraded to support "
596 "'%s' property"), propname);
597 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
598 goto error;
599 }
600
601 /*
602 * bootfs property value has to be a dataset name and
603 * the dataset has to be in the same pool as it sets to.
604 */
387b6856 605 if (!bootfs_name_valid(poolname, strval)) {
34dc7c2f
BB		 606 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' "
607 "is an invalid name"), strval);
608 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
609 goto error;
610 }
b128c09f
BB		 611
612 if ((zhp = zpool_open_canfail(hdl, poolname)) == NULL) {
613 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
614 "could not open pool '%s'"), poolname);
615 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf);
616 goto error;
617 }
b128c09f 618 zpool_close(zhp);
34dc7c2f
BB		 619 break;
620
621 case ZPOOL_PROP_ALTROOT:
572e2857 622 if (!flags.create && !flags.import) {
34dc7c2f
BB		 623 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
624 "property '%s' can only be set during pool "
625 "creation or import"), propname);
626 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
627 goto error;
628 }
629
630 if (strval[0] != '/') {
631 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
632 "bad alternate root '%s'"), strval);
633 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
634 goto error;
635 }
636 break;
637
638 case ZPOOL_PROP_CACHEFILE:
639 if (strval[0] == '\0')
640 break;
641
642 if (strcmp(strval, "none") == 0)
643 break;
644
645 if (strval[0] != '/') {
646 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
647 "property '%s' must be empty, an "
648 "absolute path, or 'none'"), propname);
649 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
650 goto error;
651 }
652
653 slash = strrchr(strval, '/');
654
655 if (slash[1] == '\0' || strcmp(slash, "/.") == 0 ||
656 strcmp(slash, "/..") == 0) {
657 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
658 "'%s' is not a valid file"), strval);
659 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
660 goto error;
661 }
662
663 *slash = '\0';
664
665 if (strval[0] != '\0' &&
666 (stat64(strval, &statbuf) != 0 ||
667 !S_ISDIR(statbuf.st_mode))) {
668 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
669 "'%s' is not a valid directory"),
670 strval);
671 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
672 goto error;
673 }
674
675 *slash = '/';
676 break;
572e2857 677
d96eb2b1
DM		 678 case ZPOOL_PROP_COMMENT:
679 for (check = strval; *check != '\0'; check++) {
680 if (!isprint(*check)) {
681 zfs_error_aux(hdl,
682 dgettext(TEXT_DOMAIN,
683 "comment may only have printable "
684 "characters"));
685 (void) zfs_error(hdl, EZFS_BADPROP,
686 errbuf);
687 goto error;
688 }
689 }
690 if (strlen(strval) > ZPROP_MAX_COMMENT) {
691 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
692 "comment must not exceed %d characters"),
693 ZPROP_MAX_COMMENT);
694 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
695 goto error;
696 }
697 break;
572e2857
BB		 698 case ZPOOL_PROP_READONLY:
699 if (!flags.import) {
700 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
701 "property '%s' can only be set at "
702 "import time"), propname);
703 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
704 goto error;
705 }
706 break;
83e9986f
RY		 707 case ZPOOL_PROP_TNAME:
708 if (!flags.create) {
709 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
710 "property '%s' can only be set at "
711 "creation time"), propname);
712 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
713 goto error;
714 }
97dde921 715 break;
379ca9cf
OF		 716 case ZPOOL_PROP_MULTIHOST:
717 if (get_system_hostid() == 0) {
718 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
719 "requires a non-zero system hostid"));
720 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
721 goto error;
722 }
723 break;
23d70cde
GM		 724 default:
725 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
726 "property '%s'(%d) not defined"), propname, prop);
83e9986f 727 break;
34dc7c2f
BB		 728 }
729 }
730
731 return (retprops);
732error:
733 nvlist_free(retprops);
734 return (NULL);
735}
736
737/*
738 * Set zpool property : propname=propval.
739 */
740int
741zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval)
742{
13fe0198 743 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 744 int ret = -1;
745 char errbuf[1024];
746 nvlist_t *nvl = NULL;
747 nvlist_t *realprops;
748 uint64_t version;
572e2857 749 prop_flags_t flags = { 0 };
34dc7c2f
BB		 750
751 (void) snprintf(errbuf, sizeof (errbuf),
752 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
753 zhp->zpool_name);
754
34dc7c2f
BB		 755 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
756 return (no_memory(zhp->zpool_hdl));
757
758 if (nvlist_add_string(nvl, propname, propval) != 0) {
759 nvlist_free(nvl);
760 return (no_memory(zhp->zpool_hdl));
761 }
762
763 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
b128c09f 764 if ((realprops = zpool_valid_proplist(zhp->zpool_hdl,
572e2857 765 zhp->zpool_name, nvl, version, flags, errbuf)) == NULL) {
34dc7c2f
BB		 766 nvlist_free(nvl);
767 return (-1);
768 }
769
770 nvlist_free(nvl);
771 nvl = realprops;
772
773 /*
774 * Execute the corresponding ioctl() to set this property.
775 */
776 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
777
778 if (zcmd_write_src_nvlist(zhp->zpool_hdl, &zc, nvl) != 0) {
779 nvlist_free(nvl);
780 return (-1);
781 }
782
783 ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SET_PROPS, &zc);
784
785 zcmd_free_nvlists(&zc);
786 nvlist_free(nvl);
787
788 if (ret)
789 (void) zpool_standard_error(zhp->zpool_hdl, errno, errbuf);
790 else
791 (void) zpool_props_refresh(zhp);
792
793 return (ret);
794}
795
796int
797zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp)
798{
799 libzfs_handle_t *hdl = zhp->zpool_hdl;
800 zprop_list_t *entry;
801 char buf[ZFS_MAXPROPLEN];
9ae529ec
CS		 802 nvlist_t *features = NULL;
803 nvpair_t *nvp;
804 zprop_list_t **last;
805 boolean_t firstexpand = (NULL == *plp);
806 int i;
34dc7c2f
BB		 807
808 if (zprop_expand_list(hdl, plp, ZFS_TYPE_POOL) != 0)
809 return (-1);
810
9ae529ec
CS		 811 last = plp;
812 while (*last != NULL)
813 last = &(*last)->pl_next;
814
815 if ((*plp)->pl_all)
816 features = zpool_get_features(zhp);
817
818 if ((*plp)->pl_all && firstexpand) {
819 for (i = 0; i < SPA_FEATURES; i++) {
820 zprop_list_t *entry = zfs_alloc(hdl,
821 sizeof (zprop_list_t));
822 entry->pl_prop = ZPROP_INVAL;
823 entry->pl_user_prop = zfs_asprintf(hdl, "feature@%s",
824 spa_feature_table[i].fi_uname);
825 entry->pl_width = strlen(entry->pl_user_prop);
826 entry->pl_all = B_TRUE;
827
828 *last = entry;
829 last = &entry->pl_next;
830 }
831 }
832
833 /* add any unsupported features */
834 for (nvp = nvlist_next_nvpair(features, NULL);
835 nvp != NULL; nvp = nvlist_next_nvpair(features, nvp)) {
836 char *propname;
837 boolean_t found;
838 zprop_list_t *entry;
839
840 if (zfeature_is_supported(nvpair_name(nvp)))
841 continue;
842
843 propname = zfs_asprintf(hdl, "unsupported@%s",
844 nvpair_name(nvp));
845
846 /*
847 * Before adding the property to the list make sure that no
848 * other pool already added the same property.
849 */
850 found = B_FALSE;
851 entry = *plp;
852 while (entry != NULL) {
853 if (entry->pl_user_prop != NULL &&
854 strcmp(propname, entry->pl_user_prop) == 0) {
855 found = B_TRUE;
856 break;
857 }
858 entry = entry->pl_next;
859 }
860 if (found) {
861 free(propname);
862 continue;
863 }
864
865 entry = zfs_alloc(hdl, sizeof (zprop_list_t));
866 entry->pl_prop = ZPROP_INVAL;
867 entry->pl_user_prop = propname;
868 entry->pl_width = strlen(entry->pl_user_prop);
869 entry->pl_all = B_TRUE;
870
871 *last = entry;
872 last = &entry->pl_next;
873 }
874
34dc7c2f
BB		 875 for (entry = *plp; entry != NULL; entry = entry->pl_next) {
876
877 if (entry->pl_fixed)
878 continue;
879
880 if (entry->pl_prop != ZPROP_INVAL &&
881 zpool_get_prop(zhp, entry->pl_prop, buf, sizeof (buf),
2a8b84b7 882 NULL, B_FALSE) == 0) {
34dc7c2f
BB		 883 if (strlen(buf) > entry->pl_width)
884 entry->pl_width = strlen(buf);
885 }
886 }
887
888 return (0);
889}
890
9ae529ec
CS		 891/*
892 * Get the state for the given feature on the given ZFS pool.
893 */
894int
895zpool_prop_get_feature(zpool_handle_t *zhp, const char *propname, char *buf,
896 size_t len)
897{
898 uint64_t refcount;
899 boolean_t found = B_FALSE;
900 nvlist_t *features = zpool_get_features(zhp);
901 boolean_t supported;
902 const char *feature = strchr(propname, '@') + 1;
903
904 supported = zpool_prop_feature(propname);
905 ASSERT(supported || zpool_prop_unsupported(propname));
906
907 /*
908 * Convert from feature name to feature guid. This conversion is
4e33ba4c 909 * unnecessary for unsupported@... properties because they already
9ae529ec
CS		 910 * use guids.
911 */
912 if (supported) {
913 int ret;
fa86b5db 914 spa_feature_t fid;
9ae529ec 915
fa86b5db 916 ret = zfeature_lookup_name(feature, &fid);
9ae529ec
CS		 917 if (ret != 0) {
918 (void) strlcpy(buf, "-", len);
919 return (ENOTSUP);
920 }
fa86b5db 921 feature = spa_feature_table[fid].fi_guid;
9ae529ec
CS		 922 }
923
924 if (nvlist_lookup_uint64(features, feature, &refcount) == 0)
925 found = B_TRUE;
926
927 if (supported) {
928 if (!found) {
929 (void) strlcpy(buf, ZFS_FEATURE_DISABLED, len);
930 } else {
931 if (refcount == 0)
932 (void) strlcpy(buf, ZFS_FEATURE_ENABLED, len);
933 else
934 (void) strlcpy(buf, ZFS_FEATURE_ACTIVE, len);
935 }
936 } else {
937 if (found) {
938 if (refcount == 0) {
939 (void) strcpy(buf, ZFS_UNSUPPORTED_INACTIVE);
940 } else {
941 (void) strcpy(buf, ZFS_UNSUPPORTED_READONLY);
942 }
943 } else {
944 (void) strlcpy(buf, "-", len);
945 return (ENOTSUP);
946 }
947 }
948
949 return (0);
950}
34dc7c2f
BB		 951
952/*
953 * Validate the given pool name, optionally putting an extended error message in
954 * 'buf'.
955 */
956boolean_t
957zpool_name_valid(libzfs_handle_t *hdl, boolean_t isopen, const char *pool)
958{
959 namecheck_err_t why;
960 char what;
961 int ret;
962
963 ret = pool_namecheck(pool, &why, &what);
964
965 /*
966 * The rules for reserved pool names were extended at a later point.
967 * But we need to support users with existing pools that may now be
968 * invalid. So we only check for this expanded set of names during a
969 * create (or import), and only in userland.
970 */
971 if (ret == 0 && !isopen &&
972 (strncmp(pool, "mirror", 6) == 0 ||
973 strncmp(pool, "raidz", 5) == 0 ||
974 strncmp(pool, "spare", 5) == 0 ||
975 strcmp(pool, "log") == 0)) {
976 if (hdl != NULL)
977 zfs_error_aux(hdl,
978 dgettext(TEXT_DOMAIN, "name is reserved"));
979 return (B_FALSE);
980 }
981
982
983 if (ret != 0) {
984 if (hdl != NULL) {
985 switch (why) {
986 case NAME_ERR_TOOLONG:
987 zfs_error_aux(hdl,
988 dgettext(TEXT_DOMAIN, "name is too long"));
989 break;
990
991 case NAME_ERR_INVALCHAR:
992 zfs_error_aux(hdl,
993 dgettext(TEXT_DOMAIN, "invalid character "
994 "'%c' in pool name"), what);
995 break;
996
997 case NAME_ERR_NOLETTER:
998 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
999 "name must begin with a letter"));
1000 break;
1001
1002 case NAME_ERR_RESERVED:
1003 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1004 "name is reserved"));
1005 break;
1006
1007 case NAME_ERR_DISKLIKE:
1008 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1009 "pool name is reserved"));
1010 break;
1011
1012 case NAME_ERR_LEADING_SLASH:
1013 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1014 "leading slash in name"));
1015 break;
1016
1017 case NAME_ERR_EMPTY_COMPONENT:
1018 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1019 "empty component in name"));
1020 break;
1021
1022 case NAME_ERR_TRAILING_SLASH:
1023 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1024 "trailing slash in name"));
1025 break;
1026
aeacdefe 1027 case NAME_ERR_MULTIPLE_DELIMITERS:
34dc7c2f 1028 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
aeacdefe
GM		 1029 "multiple '@' and/or '#' delimiters in "
1030 "name"));
34dc7c2f 1031 break;
97dde921 1032
e75c13c3
BB		 1033 case NAME_ERR_NO_AT:
1034 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1035 "permission set is missing '@'"));
97dde921 1036 break;
23d70cde
GM		 1037
1038 default:
1039 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1040 "(%d) not defined"), why);
e75c13c3 1041 break;
34dc7c2f
BB		 1042 }
1043 }
1044 return (B_FALSE);
1045 }
1046
1047 return (B_TRUE);
1048}
1049
1050/*
1051 * Open a handle to the given pool, even if the pool is currently in the FAULTED
1052 * state.
1053 */
1054zpool_handle_t *
1055zpool_open_canfail(libzfs_handle_t *hdl, const char *pool)
1056{
1057 zpool_handle_t *zhp;
1058 boolean_t missing;
1059
1060 /*
1061 * Make sure the pool name is valid.
1062 */
1063 if (!zpool_name_valid(hdl, B_TRUE, pool)) {
1064 (void) zfs_error_fmt(hdl, EZFS_INVALIDNAME,
1065 dgettext(TEXT_DOMAIN, "cannot open '%s'"),
1066 pool);
1067 return (NULL);
1068 }
1069
1070 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL)
1071 return (NULL);
1072
1073 zhp->zpool_hdl = hdl;
1074 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name));
1075
1076 if (zpool_refresh_stats(zhp, &missing) != 0) {
1077 zpool_close(zhp);
1078 return (NULL);
1079 }
1080
1081 if (missing) {
1082 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no such pool"));
1083 (void) zfs_error_fmt(hdl, EZFS_NOENT,
1084 dgettext(TEXT_DOMAIN, "cannot open '%s'"), pool);
1085 zpool_close(zhp);
1086 return (NULL);
1087 }
1088
1089 return (zhp);
1090}
1091
1092/*
1093 * Like the above, but silent on error. Used when iterating over pools (because
1094 * the configuration cache may be out of date).
1095 */
1096int
1097zpool_open_silent(libzfs_handle_t *hdl, const char *pool, zpool_handle_t **ret)
1098{
1099 zpool_handle_t *zhp;
1100 boolean_t missing;
1101
1102 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL)
1103 return (-1);
1104
1105 zhp->zpool_hdl = hdl;
1106 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name));
1107
1108 if (zpool_refresh_stats(zhp, &missing) != 0) {
1109 zpool_close(zhp);
1110 return (-1);
1111 }
1112
1113 if (missing) {
1114 zpool_close(zhp);
1115 *ret = NULL;
1116 return (0);
1117 }
1118
1119 *ret = zhp;
1120 return (0);
1121}
1122
1123/*
1124 * Similar to zpool_open_canfail(), but refuses to open pools in the faulted
1125 * state.
1126 */
1127zpool_handle_t *
1128zpool_open(libzfs_handle_t *hdl, const char *pool)
1129{
1130 zpool_handle_t *zhp;
1131
1132 if ((zhp = zpool_open_canfail(hdl, pool)) == NULL)
1133 return (NULL);
1134
1135 if (zhp->zpool_state == POOL_STATE_UNAVAIL) {
1136 (void) zfs_error_fmt(hdl, EZFS_POOLUNAVAIL,
1137 dgettext(TEXT_DOMAIN, "cannot open '%s'"), zhp->zpool_name);
1138 zpool_close(zhp);
1139 return (NULL);
1140 }
1141
1142 return (zhp);
1143}
1144
1145/*
1146 * Close the handle. Simply frees the memory associated with the handle.
1147 */
1148void
1149zpool_close(zpool_handle_t *zhp)
1150{
8a5fc748
JJS		 1151 nvlist_free(zhp->zpool_config);
1152 nvlist_free(zhp->zpool_old_config);
1153 nvlist_free(zhp->zpool_props);
34dc7c2f
BB		 1154 free(zhp);
1155}
1156
1157/*
1158 * Return the name of the pool.
1159 */
1160const char *
1161zpool_get_name(zpool_handle_t *zhp)
1162{
1163 return (zhp->zpool_name);
1164}
1165
1166
1167/*
1168 * Return the state of the pool (ACTIVE or UNAVAILABLE)
1169 */
1170int
1171zpool_get_state(zpool_handle_t *zhp)
1172{
1173 return (zhp->zpool_state);
1174}
1175
1176/*
1177 * Create the named pool, using the provided vdev list. It is assumed
1178 * that the consumer has already validated the contents of the nvlist, so we
1179 * don't have to worry about error semantics.
1180 */
1181int
1182zpool_create(libzfs_handle_t *hdl, const char *pool, nvlist_t *nvroot,
b128c09f 1183 nvlist_t *props, nvlist_t *fsprops)
34dc7c2f 1184{
13fe0198 1185 zfs_cmd_t zc = {"\0"};
b128c09f
BB		 1186 nvlist_t *zc_fsprops = NULL;
1187 nvlist_t *zc_props = NULL;
b5256303
TC		 1188 nvlist_t *hidden_args = NULL;
1189 uint8_t *wkeydata = NULL;
1190 uint_t wkeylen = 0;
34dc7c2f 1191 char msg[1024];
b128c09f 1192 int ret = -1;
34dc7c2f
BB		 1193
1194 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1195 "cannot create '%s'"), pool);
1196
1197 if (!zpool_name_valid(hdl, B_FALSE, pool))
1198 return (zfs_error(hdl, EZFS_INVALIDNAME, msg));
1199
1200 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
1201 return (-1);
1202
b128c09f 1203 if (props) {
572e2857
BB		 1204 prop_flags_t flags = { .create = B_TRUE, .import = B_FALSE };
1205
b128c09f 1206 if ((zc_props = zpool_valid_proplist(hdl, pool, props,
572e2857 1207 SPA_VERSION_1, flags, msg)) == NULL) {
b128c09f
BB		 1208 goto create_failed;
1209 }
1210 }
34dc7c2f 1211
b128c09f
BB		 1212 if (fsprops) {
1213 uint64_t zoned;
1214 char *zonestr;
1215
1216 zoned = ((nvlist_lookup_string(fsprops,
1217 zfs_prop_to_name(ZFS_PROP_ZONED), &zonestr) == 0) &&
1218 strcmp(zonestr, "on") == 0);
1219
82f6f6e6 1220 if ((zc_fsprops = zfs_valid_proplist(hdl, ZFS_TYPE_FILESYSTEM,
b5256303 1221 fsprops, zoned, NULL, NULL, B_TRUE, msg)) == NULL) {
b128c09f
BB		 1222 goto create_failed;
1223 }
1224 if (!zc_props &&
1225 (nvlist_alloc(&zc_props, NV_UNIQUE_NAME, 0) != 0)) {
1226 goto create_failed;
1227 }
b5256303
TC		 1228 if (zfs_crypto_create(hdl, NULL, zc_fsprops, props,
1229 &wkeydata, &wkeylen) != 0) {
1230 zfs_error(hdl, EZFS_CRYPTOFAILED, msg);
1231 goto create_failed;
1232 }
b128c09f
BB		 1233 if (nvlist_add_nvlist(zc_props,
1234 ZPOOL_ROOTFS_PROPS, zc_fsprops) != 0) {
1235 goto create_failed;
1236 }
b5256303
TC		 1237 if (wkeydata != NULL) {
1238 if (nvlist_alloc(&hidden_args, NV_UNIQUE_NAME, 0) != 0)
1239 goto create_failed;
1240
1241 if (nvlist_add_uint8_array(hidden_args, "wkeydata",
1242 wkeydata, wkeylen) != 0)
1243 goto create_failed;
1244
1245 if (nvlist_add_nvlist(zc_props, ZPOOL_HIDDEN_ARGS,
1246 hidden_args) != 0)
1247 goto create_failed;
1248 }
34dc7c2f
BB		 1249 }
1250
b128c09f
BB		 1251 if (zc_props && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0)
1252 goto create_failed;
1253
34dc7c2f
BB		 1254 (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name));
1255
b128c09f 1256 if ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_CREATE, &zc)) != 0) {
34dc7c2f
BB		 1257
1258 zcmd_free_nvlists(&zc);
b128c09f
BB		 1259 nvlist_free(zc_props);
1260 nvlist_free(zc_fsprops);
b5256303
TC		 1261 nvlist_free(hidden_args);
1262 if (wkeydata != NULL)
1263 free(wkeydata);
34dc7c2f
BB		 1264
1265 switch (errno) {
1266 case EBUSY:
1267 /*
1268 * This can happen if the user has specified the same
1269 * device multiple times. We can't reliably detect this
1270 * until we try to add it and see we already have a
d603ed6c
BB		 1271 * label. This can also happen under if the device is
1272 * part of an active md or lvm device.
34dc7c2f
BB		 1273 */
1274 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
d1d7e268
MK		 1275 "one or more vdevs refer to the same device, or "
1276 "one of\nthe devices is part of an active md or "
1277 "lvm device"));
34dc7c2f
BB		 1278 return (zfs_error(hdl, EZFS_BADDEV, msg));
1279
82f6f6e6
JS		 1280 case ERANGE:
1281 /*
1282 * This happens if the record size is smaller or larger
1283 * than the allowed size range, or not a power of 2.
1284 *
1285 * NOTE: although zfs_valid_proplist is called earlier,
1286 * this case may have slipped through since the
1287 * pool does not exist yet and it is therefore
1288 * impossible to read properties e.g. max blocksize
1289 * from the pool.
1290 */
1291 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1292 "record size invalid"));
1293 return (zfs_error(hdl, EZFS_BADPROP, msg));
1294
34dc7c2f
BB		 1295 case EOVERFLOW:
1296 /*
1297 * This occurs when one of the devices is below
1298 * SPA_MINDEVSIZE. Unfortunately, we can't detect which
1299 * device was the problem device since there's no
1300 * reliable way to determine device size from userland.
1301 */
1302 {
1303 char buf[64];
1304
e7fbeb60 1305 zfs_nicebytes(SPA_MINDEVSIZE, buf,
1306 sizeof (buf));
34dc7c2f
BB		 1307
1308 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1309 "one or more devices is less than the "
1310 "minimum size (%s)"), buf);
1311 }
1312 return (zfs_error(hdl, EZFS_BADDEV, msg));
1313
1314 case ENOSPC:
1315 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1316 "one or more devices is out of space"));
1317 return (zfs_error(hdl, EZFS_BADDEV, msg));
1318
1319 case ENOTBLK:
1320 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1321 "cache device must be a disk or disk slice"));
1322 return (zfs_error(hdl, EZFS_BADDEV, msg));
1323
1324 default:
1325 return (zpool_standard_error(hdl, errno, msg));
1326 }
1327 }
1328
b128c09f 1329create_failed:
34dc7c2f 1330 zcmd_free_nvlists(&zc);
b128c09f
BB		 1331 nvlist_free(zc_props);
1332 nvlist_free(zc_fsprops);
b5256303
TC		 1333 nvlist_free(hidden_args);
1334 if (wkeydata != NULL)
1335 free(wkeydata);
b128c09f 1336 return (ret);
34dc7c2f
BB		 1337}
1338
1339/*
1340 * Destroy the given pool. It is up to the caller to ensure that there are no
1341 * datasets left in the pool.
1342 */
1343int
6f1ffb06 1344zpool_destroy(zpool_handle_t *zhp, const char *log_str)
34dc7c2f 1345{
13fe0198 1346 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 1347 zfs_handle_t *zfp = NULL;
1348 libzfs_handle_t *hdl = zhp->zpool_hdl;
1349 char msg[1024];
1350
1351 if (zhp->zpool_state == POOL_STATE_ACTIVE &&
572e2857 1352 (zfp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_FILESYSTEM)) == NULL)
34dc7c2f
BB		 1353 return (-1);
1354
34dc7c2f 1355 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
6f1ffb06 1356 zc.zc_history = (uint64_t)(uintptr_t)log_str;
34dc7c2f 1357
572e2857 1358 if (zfs_ioctl(hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) {
34dc7c2f
BB		 1359 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1360 "cannot destroy '%s'"), zhp->zpool_name);
1361
1362 if (errno == EROFS) {
1363 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1364 "one or more devices is read only"));
1365 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1366 } else {
1367 (void) zpool_standard_error(hdl, errno, msg);
1368 }
1369
1370 if (zfp)
1371 zfs_close(zfp);
1372 return (-1);
1373 }
1374
1375 if (zfp) {
1376 remove_mountpoint(zfp);
1377 zfs_close(zfp);
1378 }
1379
1380 return (0);
1381}
1382
d2734cce
SD		 1383/*
1384 * Create a checkpoint in the given pool.
1385 */
1386int
1387zpool_checkpoint(zpool_handle_t *zhp)
1388{
1389 libzfs_handle_t *hdl = zhp->zpool_hdl;
1390 char msg[1024];
1391 int error;
1392
1393 error = lzc_pool_checkpoint(zhp->zpool_name);
1394 if (error != 0) {
1395 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1396 "cannot checkpoint '%s'"), zhp->zpool_name);
1397 (void) zpool_standard_error(hdl, error, msg);
1398 return (-1);
1399 }
1400
1401 return (0);
1402}
1403
1404/*
1405 * Discard the checkpoint from the given pool.
1406 */
1407int
1408zpool_discard_checkpoint(zpool_handle_t *zhp)
1409{
1410 libzfs_handle_t *hdl = zhp->zpool_hdl;
1411 char msg[1024];
1412 int error;
1413
1414 error = lzc_pool_checkpoint_discard(zhp->zpool_name);
1415 if (error != 0) {
1416 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1417 "cannot discard checkpoint in '%s'"), zhp->zpool_name);
1418 (void) zpool_standard_error(hdl, error, msg);
1419 return (-1);
1420 }
1421
1422 return (0);
1423}
1424
34dc7c2f
BB		 1425/*
1426 * Add the given vdevs to the pool. The caller must have already performed the
1427 * necessary verification to ensure that the vdev specification is well-formed.
1428 */
1429int
1430zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot)
1431{
13fe0198 1432 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 1433 int ret;
1434 libzfs_handle_t *hdl = zhp->zpool_hdl;
1435 char msg[1024];
1436 nvlist_t **spares, **l2cache;
1437 uint_t nspares, nl2cache;
1438
1439 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1440 "cannot add to '%s'"), zhp->zpool_name);
1441
1442 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) <
1443 SPA_VERSION_SPARES &&
1444 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
1445 &spares, &nspares) == 0) {
1446 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be "
1447 "upgraded to add hot spares"));
1448 return (zfs_error(hdl, EZFS_BADVERSION, msg));
1449 }
1450
1451 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) <
1452 SPA_VERSION_L2CACHE &&
1453 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE,
1454 &l2cache, &nl2cache) == 0) {
1455 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be "
1456 "upgraded to add cache devices"));
1457 return (zfs_error(hdl, EZFS_BADVERSION, msg));
1458 }
1459
1460 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
1461 return (-1);
1462 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
1463
572e2857 1464 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) {
34dc7c2f
BB		 1465 switch (errno) {
1466 case EBUSY:
1467 /*
1468 * This can happen if the user has specified the same
1469 * device multiple times. We can't reliably detect this
1470 * until we try to add it and see we already have a
1471 * label.
1472 */
1473 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1474 "one or more vdevs refer to the same device"));
1475 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1476 break;
1477
a1d477c2
MA		 1478 case EINVAL:
1479 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1480 "invalid config; a pool with removing/removed "
1481 "vdevs does not support adding raidz vdevs"));
1482 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1483 break;
1484
34dc7c2f
BB		 1485 case EOVERFLOW:
1486 /*
1487 * This occurrs when one of the devices is below
1488 * SPA_MINDEVSIZE. Unfortunately, we can't detect which
1489 * device was the problem device since there's no
1490 * reliable way to determine device size from userland.
1491 */
1492 {
1493 char buf[64];
1494
e7fbeb60 1495 zfs_nicebytes(SPA_MINDEVSIZE, buf,
1496 sizeof (buf));
34dc7c2f
BB		 1497
1498 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1499 "device is less than the minimum "
1500 "size (%s)"), buf);
1501 }
1502 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1503 break;
1504
1505 case ENOTSUP:
1506 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1507 "pool must be upgraded to add these vdevs"));
1508 (void) zfs_error(hdl, EZFS_BADVERSION, msg);
1509 break;
1510
34dc7c2f
BB		 1511 case ENOTBLK:
1512 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1513 "cache device must be a disk or disk slice"));
1514 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1515 break;
1516
1517 default:
1518 (void) zpool_standard_error(hdl, errno, msg);
1519 }
1520
1521 ret = -1;
1522 } else {
1523 ret = 0;
1524 }
1525
1526 zcmd_free_nvlists(&zc);
1527
1528 return (ret);
1529}
1530
1531/*
1532 * Exports the pool from the system. The caller must ensure that there are no
1533 * mounted datasets in the pool.
1534 */
6f1ffb06
MA		 1535static int
1536zpool_export_common(zpool_handle_t *zhp, boolean_t force, boolean_t hardforce,
1537 const char *log_str)
34dc7c2f 1538{
13fe0198 1539 zfs_cmd_t zc = {"\0"};
b128c09f 1540 char msg[1024];
34dc7c2f 1541
b128c09f
BB		 1542 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1543 "cannot export '%s'"), zhp->zpool_name);
1544
34dc7c2f 1545 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 1546 zc.zc_cookie = force;
fb5f0bc8 1547 zc.zc_guid = hardforce;
6f1ffb06 1548 zc.zc_history = (uint64_t)(uintptr_t)log_str;
b128c09f
BB		 1549
1550 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_EXPORT, &zc) != 0) {
1551 switch (errno) {
1552 case EXDEV:
1553 zfs_error_aux(zhp->zpool_hdl, dgettext(TEXT_DOMAIN,
1554 "use '-f' to override the following errors:\n"
1555 "'%s' has an active shared spare which could be"
1556 " used by other pools once '%s' is exported."),
1557 zhp->zpool_name, zhp->zpool_name);
1558 return (zfs_error(zhp->zpool_hdl, EZFS_ACTIVE_SPARE,
1559 msg));
1560 default:
1561 return (zpool_standard_error_fmt(zhp->zpool_hdl, errno,
1562 msg));
1563 }
1564 }
34dc7c2f 1565
34dc7c2f
BB		 1566 return (0);
1567}
1568
fb5f0bc8 1569int
6f1ffb06 1570zpool_export(zpool_handle_t *zhp, boolean_t force, const char *log_str)
fb5f0bc8 1571{
6f1ffb06 1572 return (zpool_export_common(zhp, force, B_FALSE, log_str));
fb5f0bc8
BB		 1573}
1574
1575int
6f1ffb06 1576zpool_export_force(zpool_handle_t *zhp, const char *log_str)
fb5f0bc8 1577{
6f1ffb06 1578 return (zpool_export_common(zhp, B_TRUE, B_TRUE, log_str));
fb5f0bc8
BB		 1579}
1580
428870ff
BB		 1581static void
1582zpool_rewind_exclaim(libzfs_handle_t *hdl, const char *name, boolean_t dryrun,
572e2857 1583 nvlist_t *config)
428870ff 1584{
572e2857 1585 nvlist_t *nv = NULL;
428870ff
BB		 1586 uint64_t rewindto;
1587 int64_t loss = -1;
1588 struct tm t;
1589 char timestr[128];
1590
572e2857
BB		 1591 if (!hdl->libzfs_printerr || config == NULL)
1592 return;
1593
9ae529ec
CS		 1594 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 ||
1595 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0) {
428870ff 1596 return;
9ae529ec 1597 }
428870ff 1598
572e2857 1599 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0)
428870ff 1600 return;
572e2857 1601 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss);
428870ff
BB		 1602
1603 if (localtime_r((time_t *)&rewindto, &t) != NULL &&
b8864a23 1604 strftime(timestr, 128, "%c", &t) != 0) {
428870ff
BB		 1605 if (dryrun) {
1606 (void) printf(dgettext(TEXT_DOMAIN,
1607 "Would be able to return %s "
1608 "to its state as of %s.\n"),
1609 name, timestr);
1610 } else {
1611 (void) printf(dgettext(TEXT_DOMAIN,
1612 "Pool %s returned to its state as of %s.\n"),
1613 name, timestr);
1614 }
1615 if (loss > 120) {
1616 (void) printf(dgettext(TEXT_DOMAIN,
1617 "%s approximately %lld "),
1618 dryrun ? "Would discard" : "Discarded",
b8864a23 1619 ((longlong_t)loss + 30) / 60);
428870ff
BB		 1620 (void) printf(dgettext(TEXT_DOMAIN,
1621 "minutes of transactions.\n"));
1622 } else if (loss > 0) {
1623 (void) printf(dgettext(TEXT_DOMAIN,
1624 "%s approximately %lld "),
b8864a23
BB		 1625 dryrun ? "Would discard" : "Discarded",
1626 (longlong_t)loss);
428870ff
BB		 1627 (void) printf(dgettext(TEXT_DOMAIN,
1628 "seconds of transactions.\n"));
1629 }
1630 }
1631}
1632
1633void
1634zpool_explain_recover(libzfs_handle_t *hdl, const char *name, int reason,
1635 nvlist_t *config)
1636{
572e2857 1637 nvlist_t *nv = NULL;
428870ff
BB		 1638 int64_t loss = -1;
1639 uint64_t edata = UINT64_MAX;
1640 uint64_t rewindto;
1641 struct tm t;
1642 char timestr[128];
1643
1644 if (!hdl->libzfs_printerr)
1645 return;
1646
1647 if (reason >= 0)
1648 (void) printf(dgettext(TEXT_DOMAIN, "action: "));
1649 else
1650 (void) printf(dgettext(TEXT_DOMAIN, "\t"));
1651
1652 /* All attempted rewinds failed if ZPOOL_CONFIG_LOAD_TIME missing */
572e2857 1653 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 ||
9ae529ec 1654 nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_REWIND_INFO, &nv) != 0 ||
572e2857 1655 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0)
428870ff
BB		 1656 goto no_info;
1657
572e2857
BB		 1658 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss);
1659 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_DATA_ERRORS,
428870ff
BB		 1660 &edata);
1661
1662 (void) printf(dgettext(TEXT_DOMAIN,
1663 "Recovery is possible, but will result in some data loss.\n"));
1664
1665 if (localtime_r((time_t *)&rewindto, &t) != NULL &&
b8864a23 1666 strftime(timestr, 128, "%c", &t) != 0) {
428870ff
BB		 1667 (void) printf(dgettext(TEXT_DOMAIN,
1668 "\tReturning the pool to its state as of %s\n"
1669 "\tshould correct the problem. "),
1670 timestr);
1671 } else {
1672 (void) printf(dgettext(TEXT_DOMAIN,
1673 "\tReverting the pool to an earlier state "
1674 "should correct the problem.\n\t"));
1675 }
1676
1677 if (loss > 120) {
1678 (void) printf(dgettext(TEXT_DOMAIN,
1679 "Approximately %lld minutes of data\n"
b8864a23
BB		 1680 "\tmust be discarded, irreversibly. "),
1681 ((longlong_t)loss + 30) / 60);
428870ff
BB		 1682 } else if (loss > 0) {
1683 (void) printf(dgettext(TEXT_DOMAIN,
1684 "Approximately %lld seconds of data\n"
b8864a23
BB		 1685 "\tmust be discarded, irreversibly. "),
1686 (longlong_t)loss);
428870ff
BB		 1687 }
1688 if (edata != 0 && edata != UINT64_MAX) {
1689 if (edata == 1) {
1690 (void) printf(dgettext(TEXT_DOMAIN,
1691 "After rewind, at least\n"
1692 "\tone persistent user-data error will remain. "));
1693 } else {
1694 (void) printf(dgettext(TEXT_DOMAIN,
1695 "After rewind, several\n"
1696 "\tpersistent user-data errors will remain. "));
1697 }
1698 }
1699 (void) printf(dgettext(TEXT_DOMAIN,
1700 "Recovery can be attempted\n\tby executing 'zpool %s -F %s'. "),
1701 reason >= 0 ? "clear" : "import", name);
1702
1703 (void) printf(dgettext(TEXT_DOMAIN,
1704 "A scrub of the pool\n"
1705 "\tis strongly recommended after recovery.\n"));
1706 return;
1707
1708no_info:
1709 (void) printf(dgettext(TEXT_DOMAIN,
1710 "Destroy and re-create the pool from\n\ta backup source.\n"));
1711}
1712
34dc7c2f
BB		 1713/*
1714 * zpool_import() is a contracted interface. Should be kept the same
1715 * if possible.
1716 *
1717 * Applications should use zpool_import_props() to import a pool with
1718 * new properties value to be set.
1719 */
1720int
1721zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
1722 char *altroot)
1723{
1724 nvlist_t *props = NULL;
1725 int ret;
1726
1727 if (altroot != NULL) {
1728 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
1729 return (zfs_error_fmt(hdl, EZFS_NOMEM,
1730 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1731 newname));
1732 }
1733
1734 if (nvlist_add_string(props,
fb5f0bc8
BB		 1735 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), altroot) != 0 ||
1736 nvlist_add_string(props,
1737 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), "none") != 0) {
34dc7c2f
BB		 1738 nvlist_free(props);
1739 return (zfs_error_fmt(hdl, EZFS_NOMEM,
1740 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1741 newname));
1742 }
1743 }
1744
572e2857
BB		 1745 ret = zpool_import_props(hdl, config, newname, props,
1746 ZFS_IMPORT_NORMAL);
8a5fc748 1747 nvlist_free(props);
34dc7c2f
BB		 1748 return (ret);
1749}
1750
572e2857
BB		 1751static void
1752print_vdev_tree(libzfs_handle_t *hdl, const char *name, nvlist_t *nv,
1753 int indent)
1754{
1755 nvlist_t **child;
1756 uint_t c, children;
1757 char *vname;
1758 uint64_t is_log = 0;
1759
1760 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG,
1761 &is_log);
1762
1763 if (name != NULL)
1764 (void) printf("\t%*s%s%s\n", indent, "", name,
1765 is_log ? " [log]" : "");
1766
1767 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1768 &child, &children) != 0)
1769 return;
1770
1771 for (c = 0; c < children; c++) {
d2f3e292 1772 vname = zpool_vdev_name(hdl, NULL, child[c], VDEV_NAME_TYPE_ID);
572e2857
BB		 1773 print_vdev_tree(hdl, vname, child[c], indent + 2);
1774 free(vname);
1775 }
1776}
1777
9ae529ec
CS		 1778void
1779zpool_print_unsup_feat(nvlist_t *config)
1780{
1781 nvlist_t *nvinfo, *unsup_feat;
1782 nvpair_t *nvp;
1783
1784 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nvinfo) ==
1785 0);
1786 verify(nvlist_lookup_nvlist(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT,
1787 &unsup_feat) == 0);
1788
1789 for (nvp = nvlist_next_nvpair(unsup_feat, NULL); nvp != NULL;
1790 nvp = nvlist_next_nvpair(unsup_feat, nvp)) {
1791 char *desc;
1792
1793 verify(nvpair_type(nvp) == DATA_TYPE_STRING);
1794 verify(nvpair_value_string(nvp, &desc) == 0);
1795
1796 if (strlen(desc) > 0)
1797 (void) printf("\t%s (%s)\n", nvpair_name(nvp), desc);
1798 else
1799 (void) printf("\t%s\n", nvpair_name(nvp));
1800 }
1801}
1802
34dc7c2f
BB		 1803/*
1804 * Import the given pool using the known configuration and a list of
1805 * properties to be set. The configuration should have come from
1806 * zpool_find_import(). The 'newname' parameters control whether the pool
1807 * is imported with a different name.
1808 */
1809int
1810zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
572e2857 1811 nvlist_t *props, int flags)
34dc7c2f 1812{
13fe0198 1813 zfs_cmd_t zc = {"\0"};
8a393be3 1814 zpool_load_policy_t policy;
572e2857
BB		 1815 nvlist_t *nv = NULL;
1816 nvlist_t *nvinfo = NULL;
1817 nvlist_t *missing = NULL;
34dc7c2f
BB		 1818 char *thename;
1819 char *origname;
1820 int ret;
572e2857 1821 int error = 0;
34dc7c2f
BB		 1822 char errbuf[1024];
1823
1824 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
1825 &origname) == 0);
1826
1827 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
1828 "cannot import pool '%s'"), origname);
1829
1830 if (newname != NULL) {
1831 if (!zpool_name_valid(hdl, B_FALSE, newname))
1832 return (zfs_error_fmt(hdl, EZFS_INVALIDNAME,
1833 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1834 newname));
1835 thename = (char *)newname;
1836 } else {
1837 thename = origname;
1838 }
1839
0fdd8d64 1840 if (props != NULL) {
34dc7c2f 1841 uint64_t version;
572e2857 1842 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE };
34dc7c2f
BB		 1843
1844 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
1845 &version) == 0);
1846
b128c09f 1847 if ((props = zpool_valid_proplist(hdl, origname,
0fdd8d64 1848 props, version, flags, errbuf)) == NULL)
34dc7c2f 1849 return (-1);
0fdd8d64 1850 if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) {
34dc7c2f
BB		 1851 nvlist_free(props);
1852 return (-1);
1853 }
0fdd8d64 1854 nvlist_free(props);
34dc7c2f
BB		 1855 }
1856
1857 (void) strlcpy(zc.zc_name, thename, sizeof (zc.zc_name));
1858
1859 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
1860 &zc.zc_guid) == 0);
1861
1862 if (zcmd_write_conf_nvlist(hdl, &zc, config) != 0) {
0fdd8d64 1863 zcmd_free_nvlists(&zc);
34dc7c2f
BB		 1864 return (-1);
1865 }
572e2857 1866 if (zcmd_alloc_dst_nvlist(hdl, &zc, zc.zc_nvlist_conf_size * 2) != 0) {
0fdd8d64 1867 zcmd_free_nvlists(&zc);
428870ff
BB		 1868 return (-1);
1869 }
34dc7c2f 1870
572e2857
BB		 1871 zc.zc_cookie = flags;
1872 while ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc)) != 0 &&
1873 errno == ENOMEM) {
1874 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
1875 zcmd_free_nvlists(&zc);
1876 return (-1);
1877 }
1878 }
1879 if (ret != 0)
1880 error = errno;
1881
1882 (void) zcmd_read_dst_nvlist(hdl, &zc, &nv);
0fdd8d64
MT		 1883
1884 zcmd_free_nvlists(&zc);
1885
8a393be3 1886 zpool_get_load_policy(config, &policy);
572e2857
BB		 1887
1888 if (error) {
34dc7c2f 1889 char desc[1024];
379ca9cf 1890 char aux[256];
428870ff 1891
428870ff
BB		 1892 /*
1893 * Dry-run failed, but we print out what success
1894 * looks like if we found a best txg
1895 */
8a393be3 1896 if (policy.zlp_rewind & ZPOOL_TRY_REWIND) {
428870ff 1897 zpool_rewind_exclaim(hdl, newname ? origname : thename,
572e2857
BB		 1898 B_TRUE, nv);
1899 nvlist_free(nv);
428870ff
BB		 1900 return (-1);
1901 }
1902
34dc7c2f
BB		 1903 if (newname == NULL)
1904 (void) snprintf(desc, sizeof (desc),
1905 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1906 thename);
1907 else
1908 (void) snprintf(desc, sizeof (desc),
1909 dgettext(TEXT_DOMAIN, "cannot import '%s' as '%s'"),
1910 origname, thename);
1911
572e2857 1912 switch (error) {
34dc7c2f 1913 case ENOTSUP:
9ae529ec
CS		 1914 if (nv != NULL && nvlist_lookup_nvlist(nv,
1915 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 &&
1916 nvlist_exists(nvinfo, ZPOOL_CONFIG_UNSUP_FEAT)) {
1917 (void) printf(dgettext(TEXT_DOMAIN, "This "
1918 "pool uses the following feature(s) not "
1919 "supported by this system:\n"));
1920 zpool_print_unsup_feat(nv);
1921 if (nvlist_exists(nvinfo,
1922 ZPOOL_CONFIG_CAN_RDONLY)) {
1923 (void) printf(dgettext(TEXT_DOMAIN,
1924 "All unsupported features are only "
1925 "required for writing to the pool."
1926 "\nThe pool can be imported using "
1927 "'-o readonly=on'.\n"));
1928 }
1929 }
34dc7c2f
BB		 1930 /*
1931 * Unsupported version.
1932 */
1933 (void) zfs_error(hdl, EZFS_BADVERSION, desc);
1934 break;
1935
379ca9cf
OF		 1936 case EREMOTEIO:
1937 if (nv != NULL && nvlist_lookup_nvlist(nv,
1938 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0) {
1939 char *hostname = "<unknown>";
1940 uint64_t hostid = 0;
1941 mmp_state_t mmp_state;
1942
1943 mmp_state = fnvlist_lookup_uint64(nvinfo,
1944 ZPOOL_CONFIG_MMP_STATE);
1945
1946 if (nvlist_exists(nvinfo,
1947 ZPOOL_CONFIG_MMP_HOSTNAME))
1948 hostname = fnvlist_lookup_string(nvinfo,
1949 ZPOOL_CONFIG_MMP_HOSTNAME);
1950
1951 if (nvlist_exists(nvinfo,
1952 ZPOOL_CONFIG_MMP_HOSTID))
1953 hostid = fnvlist_lookup_uint64(nvinfo,
1954 ZPOOL_CONFIG_MMP_HOSTID);
1955
1956 if (mmp_state == MMP_STATE_ACTIVE) {
1957 (void) snprintf(aux, sizeof (aux),
1958 dgettext(TEXT_DOMAIN, "pool is imp"
1959 "orted on host '%s' (hostid=%lx).\n"
1960 "Export the pool on the other "
1961 "system, then run 'zpool import'."),
1962 hostname, (unsigned long) hostid);
1963 } else if (mmp_state == MMP_STATE_NO_HOSTID) {
1964 (void) snprintf(aux, sizeof (aux),
1965 dgettext(TEXT_DOMAIN, "pool has "
1966 "the multihost property on and "
1967 "the\nsystem's hostid is not set. "
1968 "Set a unique system hostid with "
b9373170 1969 "the zgenhostid(8) command.\n"));
379ca9cf
OF		 1970 }
1971
1972 (void) zfs_error_aux(hdl, aux);
1973 }
1974 (void) zfs_error(hdl, EZFS_ACTIVE_POOL, desc);
1975 break;
1976
34dc7c2f
BB		 1977 case EINVAL:
1978 (void) zfs_error(hdl, EZFS_INVALCONFIG, desc);
1979 break;
1980
428870ff
BB		 1981 case EROFS:
1982 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1983 "one or more devices is read only"));
1984 (void) zfs_error(hdl, EZFS_BADDEV, desc);
1985 break;
1986
572e2857
BB		 1987 case ENXIO:
1988 if (nv && nvlist_lookup_nvlist(nv,
1989 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 &&
1990 nvlist_lookup_nvlist(nvinfo,
1991 ZPOOL_CONFIG_MISSING_DEVICES, &missing) == 0) {
1992 (void) printf(dgettext(TEXT_DOMAIN,
6cb8e530
PZ		 1993 "The devices below are missing or "
1994 "corrupted, use '-m' to import the pool "
1995 "anyway:\n"));
572e2857
BB		 1996 print_vdev_tree(hdl, NULL, missing, 2);
1997 (void) printf("\n");
1998 }
1999 (void) zpool_standard_error(hdl, error, desc);
2000 break;
2001
2002 case EEXIST:
2003 (void) zpool_standard_error(hdl, error, desc);
2004 break;
2005
abe5b8fb
BB		 2006 case EBUSY:
2007 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2008 "one or more devices are already in use\n"));
2009 (void) zfs_error(hdl, EZFS_BADDEV, desc);
2010 break;
d1d19c78
PD		 2011 case ENAMETOOLONG:
2012 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2013 "new name of at least one dataset is longer than "
2014 "the maximum allowable length"));
2015 (void) zfs_error(hdl, EZFS_NAMETOOLONG, desc);
2016 break;
34dc7c2f 2017 default:
572e2857 2018 (void) zpool_standard_error(hdl, error, desc);
428870ff 2019 zpool_explain_recover(hdl,
572e2857 2020 newname ? origname : thename, -error, nv);
428870ff 2021 break;
34dc7c2f
BB		 2022 }
2023
572e2857 2024 nvlist_free(nv);
34dc7c2f
BB		 2025 ret = -1;
2026 } else {
2027 zpool_handle_t *zhp;
2028
2029 /*
2030 * This should never fail, but play it safe anyway.
2031 */
428870ff 2032 if (zpool_open_silent(hdl, thename, &zhp) != 0)
34dc7c2f 2033 ret = -1;
428870ff 2034 else if (zhp != NULL)
34dc7c2f 2035 zpool_close(zhp);
8a393be3 2036 if (policy.zlp_rewind &
428870ff
BB		 2037 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) {
2038 zpool_rewind_exclaim(hdl, newname ? origname : thename,
8a393be3 2039 ((policy.zlp_rewind & ZPOOL_TRY_REWIND) != 0), nv);
34dc7c2f 2040 }
572e2857 2041 nvlist_free(nv);
428870ff 2042 return (0);
34dc7c2f
BB		 2043 }
2044
34dc7c2f
BB		 2045 return (ret);
2046}
2047
2048/*
428870ff 2049 * Scan the pool.
34dc7c2f
BB		 2050 */
2051int
0ea05c64 2052zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func, pool_scrub_cmd_t cmd)
34dc7c2f 2053{
13fe0198 2054 zfs_cmd_t zc = {"\0"};
34dc7c2f 2055 char msg[1024];
0ea05c64 2056 int err;
34dc7c2f
BB		 2057 libzfs_handle_t *hdl = zhp->zpool_hdl;
2058
2059 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
428870ff 2060 zc.zc_cookie = func;
0ea05c64 2061 zc.zc_flags = cmd;
34dc7c2f 2062
0ea05c64
AP		 2063 if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0)
2064 return (0);
2065
2066 err = errno;
2067
2068 /* ECANCELED on a scrub means we resumed a paused scrub */
2069 if (err == ECANCELED && func == POOL_SCAN_SCRUB &&
2070 cmd == POOL_SCRUB_NORMAL)
2071 return (0);
2072
2073 if (err == ENOENT && func != POOL_SCAN_NONE && cmd == POOL_SCRUB_NORMAL)
34dc7c2f
BB		 2074 return (0);
2075
428870ff 2076 if (func == POOL_SCAN_SCRUB) {
0ea05c64
AP		 2077 if (cmd == POOL_SCRUB_PAUSE) {
2078 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
2079 "cannot pause scrubbing %s"), zc.zc_name);
2080 } else {
2081 assert(cmd == POOL_SCRUB_NORMAL);
2082 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
2083 "cannot scrub %s"), zc.zc_name);
2084 }
428870ff
BB		 2085 } else if (func == POOL_SCAN_NONE) {
2086 (void) snprintf(msg, sizeof (msg),
2087 dgettext(TEXT_DOMAIN, "cannot cancel scrubbing %s"),
2088 zc.zc_name);
2089 } else {
2090 assert(!"unexpected result");
2091 }
34dc7c2f 2092
0ea05c64 2093 if (err == EBUSY) {
428870ff
BB		 2094 nvlist_t *nvroot;
2095 pool_scan_stat_t *ps = NULL;
2096 uint_t psc;
2097
2098 verify(nvlist_lookup_nvlist(zhp->zpool_config,
2099 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
2100 (void) nvlist_lookup_uint64_array(nvroot,
2101 ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc);
0ea05c64
AP		 2102 if (ps && ps->pss_func == POOL_SCAN_SCRUB) {
2103 if (cmd == POOL_SCRUB_PAUSE)
2104 return (zfs_error(hdl, EZFS_SCRUB_PAUSED, msg));
2105 else
2106 return (zfs_error(hdl, EZFS_SCRUBBING, msg));
2107 } else {
428870ff 2108 return (zfs_error(hdl, EZFS_RESILVERING, msg));
0ea05c64
AP		 2109 }
2110 } else if (err == ENOENT) {
428870ff
BB		 2111 return (zfs_error(hdl, EZFS_NO_SCRUB, msg));
2112 } else {
0ea05c64 2113 return (zpool_standard_error(hdl, err, msg));
428870ff
BB		 2114 }
2115}
2116
34dc7c2f 2117/*
9babb374
BB		 2118 * Find a vdev that matches the search criteria specified. We use the
2119 * the nvpair name to determine how we should look for the device.
34dc7c2f
BB		 2120 * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL
2121 * spare; but FALSE if its an INUSE spare.
2122 */
2123static nvlist_t *
9babb374
BB		 2124vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare,
2125 boolean_t *l2cache, boolean_t *log)
34dc7c2f
BB		 2126{
2127 uint_t c, children;
2128 nvlist_t **child;
34dc7c2f 2129 nvlist_t *ret;
b128c09f 2130 uint64_t is_log;
9babb374
BB		 2131 char *srchkey;
2132 nvpair_t *pair = nvlist_next_nvpair(search, NULL);
2133
2134 /* Nothing to look for */
2135 if (search == NULL || pair == NULL)
2136 return (NULL);
2137
2138 /* Obtain the key we will use to search */
2139 srchkey = nvpair_name(pair);
2140
2141 switch (nvpair_type(pair)) {
572e2857 2142 case DATA_TYPE_UINT64:
9babb374 2143 if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) {
572e2857
BB		 2144 uint64_t srchval, theguid;
2145
2146 verify(nvpair_value_uint64(pair, &srchval) == 0);
2147 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
2148 &theguid) == 0);
2149 if (theguid == srchval)
2150 return (nv);
9babb374
BB		 2151 }
2152 break;
9babb374
BB		 2153
2154 case DATA_TYPE_STRING: {
2155 char *srchval, *val;
2156
2157 verify(nvpair_value_string(pair, &srchval) == 0);
2158 if (nvlist_lookup_string(nv, srchkey, &val) != 0)
2159 break;
34dc7c2f 2160
9babb374 2161 /*
428870ff
BB		 2162 * Search for the requested value. Special cases:
2163 *
eac47204
BB		 2164 * - ZPOOL_CONFIG_PATH for whole disk entries. These end in
2165 * "-part1", or "p1". The suffix is hidden from the user,
2166 * but included in the string, so this matches around it.
2167 * - ZPOOL_CONFIG_PATH for short names zfs_strcmp_shortname()
2168 * is used to check all possible expanded paths.
428870ff
BB		 2169 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE).
2170 *
2171 * Otherwise, all other searches are simple string compares.
9babb374 2172 */
a2c6816c 2173 if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0) {
9babb374
BB		 2174 uint64_t wholedisk = 0;
2175
2176 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
2177 &wholedisk);
eac47204
BB		 2178 if (zfs_strcmp_pathname(srchval, val, wholedisk) == 0)
2179 return (nv);
428870ff 2180
428870ff
BB		 2181 } else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) {
2182 char *type, *idx, *end, *p;
2183 uint64_t id, vdev_id;
2184
2185 /*
2186 * Determine our vdev type, keeping in mind
2187 * that the srchval is composed of a type and
2188 * vdev id pair (i.e. mirror-4).
2189 */
2190 if ((type = strdup(srchval)) == NULL)
2191 return (NULL);
2192
2193 if ((p = strrchr(type, '-')) == NULL) {
2194 free(type);
2195 break;
2196 }
2197 idx = p + 1;
2198 *p = '\0';
2199
2200 /*
2201 * If the types don't match then keep looking.
2202 */
2203 if (strncmp(val, type, strlen(val)) != 0) {
2204 free(type);
2205 break;
2206 }
2207
1574c73b 2208 verify(zpool_vdev_is_interior(type));
428870ff
BB		 2209 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID,
2210 &id) == 0);
2211
2212 errno = 0;
2213 vdev_id = strtoull(idx, &end, 10);
2214
2215 free(type);
2216 if (errno != 0)
2217 return (NULL);
2218
2219 /*
2220 * Now verify that we have the correct vdev id.
2221 */
2222 if (vdev_id == id)
2223 return (nv);
9babb374 2224 }
34dc7c2f 2225
34dc7c2f 2226 /*
9babb374 2227 * Common case
34dc7c2f 2228 */
9babb374 2229 if (strcmp(srchval, val) == 0)
34dc7c2f 2230 return (nv);
9babb374
BB		 2231 break;
2232 }
2233
2234 default:
2235 break;
34dc7c2f
BB		 2236 }
2237
2238 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
2239 &child, &children) != 0)
2240 return (NULL);
2241
b128c09f 2242 for (c = 0; c < children; c++) {
9babb374 2243 if ((ret = vdev_to_nvlist_iter(child[c], search,
b128c09f
BB		 2244 avail_spare, l2cache, NULL)) != NULL) {
2245 /*
2246 * The 'is_log' value is only set for the toplevel
2247 * vdev, not the leaf vdevs. So we always lookup the
2248 * log device from the root of the vdev tree (where
2249 * 'log' is non-NULL).
2250 */
2251 if (log != NULL &&
2252 nvlist_lookup_uint64(child[c],
2253 ZPOOL_CONFIG_IS_LOG, &is_log) == 0 &&
2254 is_log) {
2255 *log = B_TRUE;
2256 }
34dc7c2f 2257 return (ret);
b128c09f
BB		 2258 }
2259 }
34dc7c2f
BB		 2260
2261 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
2262 &child, &children) == 0) {
2263 for (c = 0; c < children; c++) {
9babb374 2264 if ((ret = vdev_to_nvlist_iter(child[c], search,
b128c09f 2265 avail_spare, l2cache, NULL)) != NULL) {
34dc7c2f
BB		 2266 *avail_spare = B_TRUE;
2267 return (ret);
2268 }
2269 }
2270 }
2271
2272 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
2273 &child, &children) == 0) {
2274 for (c = 0; c < children; c++) {
9babb374 2275 if ((ret = vdev_to_nvlist_iter(child[c], search,
b128c09f 2276 avail_spare, l2cache, NULL)) != NULL) {
34dc7c2f
BB		 2277 *l2cache = B_TRUE;
2278 return (ret);
2279 }
2280 }
2281 }
2282
2283 return (NULL);
2284}
2285
9babb374
BB		 2286/*
2287 * Given a physical path (minus the "/devices" prefix), find the
2288 * associated vdev.
2289 */
2290nvlist_t *
2291zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath,
2292 boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log)
2293{
2294 nvlist_t *search, *nvroot, *ret;
2295
2296 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2297 verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0);
2298
2299 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
2300 &nvroot) == 0);
2301
2302 *avail_spare = B_FALSE;
572e2857
BB		 2303 *l2cache = B_FALSE;
2304 if (log != NULL)
2305 *log = B_FALSE;
9babb374
BB		 2306 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
2307 nvlist_free(search);
2308
2309 return (ret);
2310}
2311
428870ff
BB		 2312/*
2313 * Determine if we have an "interior" top-level vdev (i.e mirror/raidz).
2314 */
1574c73b 2315static boolean_t
428870ff
BB		 2316zpool_vdev_is_interior(const char *name)
2317{
2318 if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 ||
1574c73b
BB		 2319 strncmp(name, VDEV_TYPE_SPARE, strlen(VDEV_TYPE_SPARE)) == 0 ||
2320 strncmp(name,
2321 VDEV_TYPE_REPLACING, strlen(VDEV_TYPE_REPLACING)) == 0 ||
428870ff
BB		 2322 strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0)
2323 return (B_TRUE);
2324 return (B_FALSE);
2325}
2326
34dc7c2f
BB		 2327nvlist_t *
2328zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare,
b128c09f 2329 boolean_t *l2cache, boolean_t *log)
34dc7c2f 2330{
34dc7c2f 2331 char *end;
9babb374 2332 nvlist_t *nvroot, *search, *ret;
34dc7c2f
BB		 2333 uint64_t guid;
2334
9babb374
BB		 2335 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2336
1a5c611a 2337 guid = strtoull(path, &end, 0);
34dc7c2f 2338 if (guid != 0 && *end == '\0') {
9babb374 2339 verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0);
428870ff
BB		 2340 } else if (zpool_vdev_is_interior(path)) {
2341 verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0);
34dc7c2f 2342 } else {
9babb374 2343 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0);
34dc7c2f
BB		 2344 }
2345
2346 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
2347 &nvroot) == 0);
2348
2349 *avail_spare = B_FALSE;
2350 *l2cache = B_FALSE;
b128c09f
BB		 2351 if (log != NULL)
2352 *log = B_FALSE;
9babb374
BB		 2353 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
2354 nvlist_free(search);
2355
2356 return (ret);
b128c09f
BB		 2357}
2358
2359static int
379ca9cf 2360vdev_is_online(nvlist_t *nv)
b128c09f
BB		 2361{
2362 uint64_t ival;
2363
2364 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 ||
2365 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 ||
2366 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0)
2367 return (0);
2368
2369 return (1);
2370}
2371
2372/*
9babb374 2373 * Helper function for zpool_get_physpaths().
b128c09f 2374 */
9babb374
BB		 2375static int
2376vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size,
2377 size_t *bytes_written)
2378{
2379 size_t bytes_left, pos, rsz;
2380 char *tmppath;
2381 const char *format;
2382
2383 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH,
2384 &tmppath) != 0)
2385 return (EZFS_NODEVICE);
2386
2387 pos = *bytes_written;
2388 bytes_left = physpath_size - pos;
2389 format = (pos == 0) ? "%s" : " %s";
2390
2391 rsz = snprintf(physpath + pos, bytes_left, format, tmppath);
2392 *bytes_written += rsz;
2393
2394 if (rsz >= bytes_left) {
2395 /* if physpath was not copied properly, clear it */
2396 if (bytes_left != 0) {
2397 physpath[pos] = 0;
2398 }
2399 return (EZFS_NOSPC);
2400 }
2401 return (0);
2402}
2403
2404static int
2405vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size,
2406 size_t *rsz, boolean_t is_spare)
2407{
2408 char *type;
2409 int ret;
2410
2411 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0)
2412 return (EZFS_INVALCONFIG);
2413
2414 if (strcmp(type, VDEV_TYPE_DISK) == 0) {
2415 /*
2416 * An active spare device has ZPOOL_CONFIG_IS_SPARE set.
2417 * For a spare vdev, we only want to boot from the active
2418 * spare device.
2419 */
2420 if (is_spare) {
2421 uint64_t spare = 0;
2422 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE,
2423 &spare);
2424 if (!spare)
2425 return (EZFS_INVALCONFIG);
2426 }
2427
379ca9cf 2428 if (vdev_is_online(nv)) {
9babb374
BB		 2429 if ((ret = vdev_get_one_physpath(nv, physpath,
2430 phypath_size, rsz)) != 0)
2431 return (ret);
2432 }
2433 } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 ||
0a3d2673 2434 strcmp(type, VDEV_TYPE_RAIDZ) == 0 ||
9babb374
BB		 2435 strcmp(type, VDEV_TYPE_REPLACING) == 0 ||
2436 (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) {
2437 nvlist_t **child;
2438 uint_t count;
2439 int i, ret;
2440
2441 if (nvlist_lookup_nvlist_array(nv,
2442 ZPOOL_CONFIG_CHILDREN, &child, &count) != 0)
2443 return (EZFS_INVALCONFIG);
2444
2445 for (i = 0; i < count; i++) {
2446 ret = vdev_get_physpaths(child[i], physpath,
2447 phypath_size, rsz, is_spare);
2448 if (ret == EZFS_NOSPC)
2449 return (ret);
2450 }
2451 }
2452
2453 return (EZFS_POOL_INVALARG);
2454}
2455
2456/*
2457 * Get phys_path for a root pool config.
2458 * Return 0 on success; non-zero on failure.
2459 */
2460static int
2461zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size)
b128c09f 2462{
9babb374 2463 size_t rsz;
b128c09f
BB		 2464 nvlist_t *vdev_root;
2465 nvlist_t **child;
2466 uint_t count;
9babb374 2467 char *type;
b128c09f 2468
9babb374 2469 rsz = 0;
b128c09f 2470
9babb374
BB		 2471 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2472 &vdev_root) != 0)
2473 return (EZFS_INVALCONFIG);
b128c09f 2474
9babb374
BB		 2475 if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 ||
2476 nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN,
b128c09f 2477 &child, &count) != 0)
9babb374 2478 return (EZFS_INVALCONFIG);
b128c09f 2479
9babb374 2480 /*
986dd8aa 2481 * root pool can only have a single top-level vdev.
9babb374 2482 */
986dd8aa 2483 if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1)
9babb374 2484 return (EZFS_POOL_INVALARG);
b128c09f 2485
9babb374
BB		 2486 (void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz,
2487 B_FALSE);
2488
2489 /* No online devices */
2490 if (rsz == 0)
2491 return (EZFS_NODEVICE);
b128c09f
BB		 2492
2493 return (0);
34dc7c2f
BB		 2494}
2495
9babb374
BB		 2496/*
2497 * Get phys_path for a root pool
2498 * Return 0 on success; non-zero on failure.
2499 */
2500int
2501zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size)
2502{
2503 return (zpool_get_config_physpath(zhp->zpool_config, physpath,
2504 phypath_size));
2505}
2506
9babb374
BB		 2507/*
2508 * If the device has being dynamically expanded then we need to relabel
2509 * the disk to use the new unallocated space.
2510 */
2511static int
8adf4864 2512zpool_relabel_disk(libzfs_handle_t *hdl, const char *path, const char *msg)
9babb374 2513{
9babb374 2514 int fd, error;
9babb374 2515
d603ed6c 2516 if ((fd = open(path, O_RDWR|O_DIRECT)) < 0) {
9babb374 2517 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
109491a8 2518 "relabel '%s': unable to open device: %d"), path, errno);
8adf4864 2519 return (zfs_error(hdl, EZFS_OPENFAILED, msg));
9babb374
BB		 2520 }
2521
2522 /*
2523 * It's possible that we might encounter an error if the device
2524 * does not have any unallocated space left. If so, we simply
2525 * ignore that error and continue on.
b5a28807
ED		 2526 *
2527 * Also, we don't call efi_rescan() - that would just return EBUSY.
2528 * The module will do it for us in vdev_disk_open().
9babb374 2529 */
d603ed6c 2530 error = efi_use_whole_disk(fd);
dbb38f66
YP		 2531
2532 /* Flush the buffers to disk and invalidate the page cache. */
2533 (void) fsync(fd);
2534 (void) ioctl(fd, BLKFLSBUF);
2535
9babb374
BB		 2536 (void) close(fd);
2537 if (error && error != VT_ENOSPC) {
2538 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
d603ed6c 2539 "relabel '%s': unable to read disk capacity"), path);
8adf4864 2540 return (zfs_error(hdl, EZFS_NOCAP, msg));
9babb374 2541 }
dbb38f66 2542
9babb374
BB		 2543 return (0);
2544}
2545
4a283c7f
TH		 2546/*
2547 * Convert a vdev path to a GUID. Returns GUID or 0 on error.
2548 *
2549 * If is_spare, is_l2cache, or is_log is non-NULL, then store within it
2550 * if the VDEV is a spare, l2cache, or log device. If they're NULL then
2551 * ignore them.
2552 */
2553static uint64_t
2554zpool_vdev_path_to_guid_impl(zpool_handle_t *zhp, const char *path,
2555 boolean_t *is_spare, boolean_t *is_l2cache, boolean_t *is_log)
2556{
2557 uint64_t guid;
2558 boolean_t spare = B_FALSE, l2cache = B_FALSE, log = B_FALSE;
2559 nvlist_t *tgt;
2560
2561 if ((tgt = zpool_find_vdev(zhp, path, &spare, &l2cache,
2562 &log)) == NULL)
2563 return (0);
2564
2565 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &guid) == 0);
2566 if (is_spare != NULL)
2567 *is_spare = spare;
2568 if (is_l2cache != NULL)
2569 *is_l2cache = l2cache;
2570 if (is_log != NULL)
2571 *is_log = log;
2572
2573 return (guid);
2574}
2575
2576/* Convert a vdev path to a GUID. Returns GUID or 0 on error. */
2577uint64_t
2578zpool_vdev_path_to_guid(zpool_handle_t *zhp, const char *path)
2579{
2580 return (zpool_vdev_path_to_guid_impl(zhp, path, NULL, NULL, NULL));
2581}
2582
34dc7c2f
BB		 2583/*
2584 * Bring the specified vdev online. The 'flags' parameter is a set of the
2585 * ZFS_ONLINE_* flags.
2586 */
2587int
2588zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags,
2589 vdev_state_t *newstate)
2590{
13fe0198 2591 zfs_cmd_t zc = {"\0"};
34dc7c2f 2592 char msg[1024];
8198c57b 2593 char *pathname;
34dc7c2f 2594 nvlist_t *tgt;
9babb374 2595 boolean_t avail_spare, l2cache, islog;
34dc7c2f 2596 libzfs_handle_t *hdl = zhp->zpool_hdl;
8adf4864 2597 int error;
34dc7c2f 2598
9babb374
BB		 2599 if (flags & ZFS_ONLINE_EXPAND) {
2600 (void) snprintf(msg, sizeof (msg),
2601 dgettext(TEXT_DOMAIN, "cannot expand %s"), path);
2602 } else {
2603 (void) snprintf(msg, sizeof (msg),
2604 dgettext(TEXT_DOMAIN, "cannot online %s"), path);
2605 }
34dc7c2f
BB		 2606
2607 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 2608 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
9babb374 2609 &islog)) == NULL)
34dc7c2f
BB		 2610 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2611
2612 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2613
428870ff 2614 if (avail_spare)
34dc7c2f
BB		 2615 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2616
8198c57b
YP		 2617 if ((flags & ZFS_ONLINE_EXPAND ||
2618 zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) &&
2619 nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH, &pathname) == 0) {
9babb374
BB		 2620 uint64_t wholedisk = 0;
2621
2622 (void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK,
2623 &wholedisk);
9babb374
BB		 2624
2625 /*
2626 * XXX - L2ARC 1.0 devices can't support expansion.
2627 */
2628 if (l2cache) {
2629 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2630 "cannot expand cache devices"));
2631 return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg));
2632 }
2633
2634 if (wholedisk) {
7608bd0d
ED		 2635 const char *fullpath = path;
2636 char buf[MAXPATHLEN];
2637
2638 if (path[0] != '/') {
2639 error = zfs_resolve_shortname(path, buf,
d1d7e268 2640 sizeof (buf));
7608bd0d
ED		 2641 if (error != 0)
2642 return (zfs_error(hdl, EZFS_NODEVICE,
2643 msg));
2644
2645 fullpath = buf;
2646 }
2647
2648 error = zpool_relabel_disk(hdl, fullpath, msg);
8adf4864
ED		 2649 if (error != 0)
2650 return (error);
9babb374
BB		 2651 }
2652 }
2653
34dc7c2f
BB		 2654 zc.zc_cookie = VDEV_STATE_ONLINE;
2655 zc.zc_obj = flags;
2656
572e2857 2657 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) {
428870ff
BB		 2658 if (errno == EINVAL) {
2659 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split "
2660 "from this pool into a new one. Use '%s' "
2661 "instead"), "zpool detach");
2662 return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg));
2663 }
34dc7c2f 2664 return (zpool_standard_error(hdl, errno, msg));
428870ff 2665 }
34dc7c2f
BB		 2666
2667 *newstate = zc.zc_cookie;
2668 return (0);
2669}
2670
2671/*
2672 * Take the specified vdev offline
2673 */
2674int
2675zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp)
2676{
13fe0198 2677 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 2678 char msg[1024];
2679 nvlist_t *tgt;
2680 boolean_t avail_spare, l2cache;
2681 libzfs_handle_t *hdl = zhp->zpool_hdl;
2682
2683 (void) snprintf(msg, sizeof (msg),
2684 dgettext(TEXT_DOMAIN, "cannot offline %s"), path);
2685
2686 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f
BB		 2687 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
2688 NULL)) == NULL)
34dc7c2f
BB		 2689 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2690
2691 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2692
428870ff 2693 if (avail_spare)
34dc7c2f
BB		 2694 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2695
34dc7c2f
BB		 2696 zc.zc_cookie = VDEV_STATE_OFFLINE;
2697 zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0;
2698
572e2857 2699 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
34dc7c2f
BB		 2700 return (0);
2701
2702 switch (errno) {
2703 case EBUSY:
2704
2705 /*
2706 * There are no other replicas of this device.
2707 */
2708 return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
2709
9babb374
BB		 2710 case EEXIST:
2711 /*
2712 * The log device has unplayed logs
2713 */
2714 return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg));
2715
34dc7c2f
BB		 2716 default:
2717 return (zpool_standard_error(hdl, errno, msg));
2718 }
2719}
2720
2721/*
2722 * Mark the given vdev faulted.
2723 */
2724int
428870ff 2725zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux)
34dc7c2f 2726{
13fe0198 2727 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 2728 char msg[1024];
2729 libzfs_handle_t *hdl = zhp->zpool_hdl;
2730
2731 (void) snprintf(msg, sizeof (msg),
d1d7e268 2732 dgettext(TEXT_DOMAIN, "cannot fault %llu"), (u_longlong_t)guid);
34dc7c2f
BB		 2733
2734 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2735 zc.zc_guid = guid;
2736 zc.zc_cookie = VDEV_STATE_FAULTED;
428870ff 2737 zc.zc_obj = aux;
34dc7c2f 2738
572e2857 2739 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
34dc7c2f
BB		 2740 return (0);
2741
2742 switch (errno) {
2743 case EBUSY:
2744
2745 /*
2746 * There are no other replicas of this device.
2747 */
2748 return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
2749
2750 default:
2751 return (zpool_standard_error(hdl, errno, msg));
2752 }
2753
2754}
2755
2756/*
2757 * Mark the given vdev degraded.
2758 */
2759int
428870ff 2760zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux)
34dc7c2f 2761{
13fe0198 2762 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 2763 char msg[1024];
2764 libzfs_handle_t *hdl = zhp->zpool_hdl;
2765
2766 (void) snprintf(msg, sizeof (msg),
d1d7e268 2767 dgettext(TEXT_DOMAIN, "cannot degrade %llu"), (u_longlong_t)guid);
34dc7c2f
BB		 2768
2769 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2770 zc.zc_guid = guid;
2771 zc.zc_cookie = VDEV_STATE_DEGRADED;
428870ff 2772 zc.zc_obj = aux;
34dc7c2f 2773
572e2857 2774 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
34dc7c2f
BB		 2775 return (0);
2776
2777 return (zpool_standard_error(hdl, errno, msg));
2778}
2779
2780/*
2781 * Returns TRUE if the given nvlist is a vdev that was originally swapped in as
2782 * a hot spare.
2783 */
2784static boolean_t
2785is_replacing_spare(nvlist_t *search, nvlist_t *tgt, int which)
2786{
2787 nvlist_t **child;
2788 uint_t c, children;
2789 char *type;
2790
2791 if (nvlist_lookup_nvlist_array(search, ZPOOL_CONFIG_CHILDREN, &child,
2792 &children) == 0) {
2793 verify(nvlist_lookup_string(search, ZPOOL_CONFIG_TYPE,
2794 &type) == 0);
2795
2796 if (strcmp(type, VDEV_TYPE_SPARE) == 0 &&
2797 children == 2 && child[which] == tgt)
2798 return (B_TRUE);
2799
2800 for (c = 0; c < children; c++)
2801 if (is_replacing_spare(child[c], tgt, which))
2802 return (B_TRUE);
2803 }
2804
2805 return (B_FALSE);
2806}
2807
2808/*
2809 * Attach new_disk (fully described by nvroot) to old_disk.
2810 * If 'replacing' is specified, the new disk will replace the old one.
2811 */
2812int
2813zpool_vdev_attach(zpool_handle_t *zhp,
2814 const char *old_disk, const char *new_disk, nvlist_t *nvroot, int replacing)
2815{
13fe0198 2816 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 2817 char msg[1024];
2818 int ret;
2819 nvlist_t *tgt;
b128c09f
BB		 2820 boolean_t avail_spare, l2cache, islog;
2821 uint64_t val;
572e2857 2822 char *newname;
34dc7c2f
BB		 2823 nvlist_t **child;
2824 uint_t children;
2825 nvlist_t *config_root;
2826 libzfs_handle_t *hdl = zhp->zpool_hdl;
1bd201e7 2827 boolean_t rootpool = zpool_is_bootable(zhp);
34dc7c2f
BB		 2828
2829 if (replacing)
2830 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
2831 "cannot replace %s with %s"), old_disk, new_disk);
2832 else
2833 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
2834 "cannot attach %s to %s"), new_disk, old_disk);
2835
2836 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 2837 if ((tgt = zpool_find_vdev(zhp, old_disk, &avail_spare, &l2cache,
a1d477c2 2838 &islog)) == NULL)
34dc7c2f
BB		 2839 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2840
2841 if (avail_spare)
2842 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2843
2844 if (l2cache)
2845 return (zfs_error(hdl, EZFS_ISL2CACHE, msg));
2846
2847 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2848 zc.zc_cookie = replacing;
2849
2850 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN,
2851 &child, &children) != 0 || children != 1) {
2852 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2853 "new device must be a single disk"));
2854 return (zfs_error(hdl, EZFS_INVALCONFIG, msg));
2855 }
2856
2857 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
2858 ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0);
2859
d2f3e292 2860 if ((newname = zpool_vdev_name(NULL, NULL, child[0], 0)) == NULL)
b128c09f
BB		 2861 return (-1);
2862
34dc7c2f
BB		 2863 /*
2864 * If the target is a hot spare that has been swapped in, we can only
2865 * replace it with another hot spare.
2866 */
2867 if (replacing &&
2868 nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_IS_SPARE, &val) == 0 &&
b128c09f
BB		 2869 (zpool_find_vdev(zhp, newname, &avail_spare, &l2cache,
2870 NULL) == NULL || !avail_spare) &&
2871 is_replacing_spare(config_root, tgt, 1)) {
34dc7c2f
BB		 2872 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2873 "can only be replaced by another hot spare"));
b128c09f 2874 free(newname);
34dc7c2f
BB		 2875 return (zfs_error(hdl, EZFS_BADTARGET, msg));
2876 }
2877
b128c09f
BB		 2878 free(newname);
2879
34dc7c2f
BB		 2880 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
2881 return (-1);
2882
572e2857 2883 ret = zfs_ioctl(hdl, ZFS_IOC_VDEV_ATTACH, &zc);
34dc7c2f
BB		 2884
2885 zcmd_free_nvlists(&zc);
2886
b128c09f
BB		 2887 if (ret == 0) {
2888 if (rootpool) {
9babb374
BB		 2889 /*
2890 * XXX need a better way to prevent user from
2891 * booting up a half-baked vdev.
2892 */
2893 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make "
2894 "sure to wait until resilver is done "
2895 "before rebooting.\n"));
b128c09f 2896 }
34dc7c2f 2897 return (0);
b128c09f 2898 }
34dc7c2f
BB		 2899
2900 switch (errno) {
2901 case ENOTSUP:
2902 /*
2903 * Can't attach to or replace this type of vdev.
2904 */
2905 if (replacing) {
572e2857
BB		 2906 uint64_t version = zpool_get_prop_int(zhp,
2907 ZPOOL_PROP_VERSION, NULL);
2908
b128c09f 2909 if (islog)
34dc7c2f
BB		 2910 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2911 "cannot replace a log with a spare"));
572e2857
BB		 2912 else if (version >= SPA_VERSION_MULTI_REPLACE)
2913 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2914 "already in replacing/spare config; wait "
2915 "for completion or use 'zpool detach'"));
34dc7c2f
BB		 2916 else
2917 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2918 "cannot replace a replacing device"));
2919 } else {
2920 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2921 "can only attach to mirrors and top-level "
2922 "disks"));
2923 }
2924 (void) zfs_error(hdl, EZFS_BADTARGET, msg);
2925 break;
2926
2927 case EINVAL:
2928 /*
2929 * The new device must be a single disk.
2930 */
2931 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2932 "new device must be a single disk"));
2933 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg);
2934 break;
2935
2936 case EBUSY:
a1d477c2 2937 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "%s is busy, "
9e052db4 2938 "or device removal is in progress"),
34dc7c2f
BB		 2939 new_disk);
2940 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2941 break;
2942
2943 case EOVERFLOW:
2944 /*
2945 * The new device is too small.
2946 */
2947 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2948 "device is too small"));
2949 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2950 break;
2951
2952 case EDOM:
2953 /*
d4aae2a0 2954 * The new device has a different optimal sector size.
34dc7c2f
BB		 2955 */
2956 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
d4aae2a0
BB		 2957 "new device has a different optimal sector size; use the "
2958 "option '-o ashift=N' to override the optimal size"));
34dc7c2f
BB		 2959 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2960 break;
2961
2962 case ENAMETOOLONG:
2963 /*
2964 * The resulting top-level vdev spec won't fit in the label.
2965 */
2966 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, msg);
2967 break;
2968
2969 default:
2970 (void) zpool_standard_error(hdl, errno, msg);
2971 }
2972
2973 return (-1);
2974}
2975
2976/*
2977 * Detach the specified device.
2978 */
2979int
2980zpool_vdev_detach(zpool_handle_t *zhp, const char *path)
2981{
13fe0198 2982 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 2983 char msg[1024];
2984 nvlist_t *tgt;
2985 boolean_t avail_spare, l2cache;
2986 libzfs_handle_t *hdl = zhp->zpool_hdl;
2987
2988 (void) snprintf(msg, sizeof (msg),
2989 dgettext(TEXT_DOMAIN, "cannot detach %s"), path);
2990
2991 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 2992 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
a1d477c2 2993 NULL)) == NULL)
34dc7c2f
BB		 2994 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2995
2996 if (avail_spare)
2997 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2998
2999 if (l2cache)
3000 return (zfs_error(hdl, EZFS_ISL2CACHE, msg));
3001
3002 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
3003
3004 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_DETACH, &zc) == 0)
3005 return (0);
3006
3007 switch (errno) {
3008
3009 case ENOTSUP:
3010 /*
3011 * Can't detach from this type of vdev.
3012 */
3013 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only "
3014 "applicable to mirror and replacing vdevs"));
572e2857 3015 (void) zfs_error(hdl, EZFS_BADTARGET, msg);
34dc7c2f
BB		 3016 break;
3017
3018 case EBUSY:
3019 /*
3020 * There are no other replicas of this device.
3021 */
3022 (void) zfs_error(hdl, EZFS_NOREPLICAS, msg);
3023 break;
3024
3025 default:
3026 (void) zpool_standard_error(hdl, errno, msg);
3027 }
3028
3029 return (-1);
3030}
3031
428870ff
BB		 3032/*
3033 * Find a mirror vdev in the source nvlist.
3034 *
3035 * The mchild array contains a list of disks in one of the top-level mirrors
3036 * of the source pool. The schild array contains a list of disks that the
3037 * user specified on the command line. We loop over the mchild array to
3038 * see if any entry in the schild array matches.
3039 *
3040 * If a disk in the mchild array is found in the schild array, we return
3041 * the index of that entry. Otherwise we return -1.
3042 */
3043static int
3044find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren,
3045 nvlist_t **schild, uint_t schildren)
3046{
3047 uint_t mc;
3048
3049 for (mc = 0; mc < mchildren; mc++) {
3050 uint_t sc;
3051 char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp,
d2f3e292 3052 mchild[mc], 0);
428870ff
BB		 3053
3054 for (sc = 0; sc < schildren; sc++) {
3055 char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp,
d2f3e292 3056 schild[sc], 0);
428870ff
BB		 3057 boolean_t result = (strcmp(mpath, spath) == 0);
3058
3059 free(spath);
3060 if (result) {
3061 free(mpath);
3062 return (mc);
3063 }
3064 }
3065
3066 free(mpath);
3067 }
3068
3069 return (-1);
3070}
3071
3072/*
3073 * Split a mirror pool. If newroot points to null, then a new nvlist
3074 * is generated and it is the responsibility of the caller to free it.
3075 */
3076int
3077zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot,
3078 nvlist_t *props, splitflags_t flags)
3079{
13fe0198 3080 zfs_cmd_t zc = {"\0"};
428870ff
BB		 3081 char msg[1024];
3082 nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL;
3083 nvlist_t **varray = NULL, *zc_props = NULL;
3084 uint_t c, children, newchildren, lastlog = 0, vcount, found = 0;
3085 libzfs_handle_t *hdl = zhp->zpool_hdl;
7fab6361 3086 uint64_t vers, readonly = B_FALSE;
428870ff
BB		 3087 boolean_t freelist = B_FALSE, memory_err = B_TRUE;
3088 int retval = 0;
3089
3090 (void) snprintf(msg, sizeof (msg),
3091 dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name);
3092
3093 if (!zpool_name_valid(hdl, B_FALSE, newname))
3094 return (zfs_error(hdl, EZFS_INVALIDNAME, msg));
3095
3096 if ((config = zpool_get_config(zhp, NULL)) == NULL) {
3097 (void) fprintf(stderr, gettext("Internal error: unable to "
3098 "retrieve pool configuration\n"));
3099 return (-1);
3100 }
3101
3102 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree)
3103 == 0);
3104 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0);
3105
3106 if (props) {
572e2857 3107 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE };
428870ff 3108 if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name,
572e2857 3109 props, vers, flags, msg)) == NULL)
428870ff 3110 return (-1);
7fab6361 3111 (void) nvlist_lookup_uint64(zc_props,
3112 zpool_prop_to_name(ZPOOL_PROP_READONLY), &readonly);
3113 if (readonly) {
3114 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3115 "property %s can only be set at import time"),
3116 zpool_prop_to_name(ZPOOL_PROP_READONLY));
3117 return (-1);
3118 }
428870ff
BB		 3119 }
3120
3121 if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
3122 &children) != 0) {
3123 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3124 "Source pool is missing vdev tree"));
8a5fc748 3125 nvlist_free(zc_props);
428870ff
BB		 3126 return (-1);
3127 }
3128
3129 varray = zfs_alloc(hdl, children * sizeof (nvlist_t *));
3130 vcount = 0;
3131
3132 if (*newroot == NULL ||
3133 nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN,
3134 &newchild, &newchildren) != 0)
3135 newchildren = 0;
3136
3137 for (c = 0; c < children; c++) {
3138 uint64_t is_log = B_FALSE, is_hole = B_FALSE;
3139 char *type;
3140 nvlist_t **mchild, *vdev;
3141 uint_t mchildren;
3142 int entry;
3143
3144 /*
3145 * Unlike cache & spares, slogs are stored in the
3146 * ZPOOL_CONFIG_CHILDREN array. We filter them out here.
3147 */
3148 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
3149 &is_log);
3150 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE,
3151 &is_hole);
3152 if (is_log || is_hole) {
3153 /*
3154 * Create a hole vdev and put it in the config.
3155 */
3156 if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0)
3157 goto out;
3158 if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE,
3159 VDEV_TYPE_HOLE) != 0)
3160 goto out;
3161 if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE,
3162 1) != 0)
3163 goto out;
3164 if (lastlog == 0)
3165 lastlog = vcount;
3166 varray[vcount++] = vdev;
3167 continue;
3168 }
3169 lastlog = 0;
3170 verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type)
3171 == 0);
3172 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) {
3173 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3174 "Source pool must be composed only of mirrors\n"));
3175 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg);
3176 goto out;
3177 }
3178
3179 verify(nvlist_lookup_nvlist_array(child[c],
3180 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
3181
3182 /* find or add an entry for this top-level vdev */
3183 if (newchildren > 0 &&
3184 (entry = find_vdev_entry(zhp, mchild, mchildren,
3185 newchild, newchildren)) >= 0) {
3186 /* We found a disk that the user specified. */
3187 vdev = mchild[entry];
3188 ++found;
3189 } else {
3190 /* User didn't specify a disk for this vdev. */
3191 vdev = mchild[mchildren - 1];
3192 }
3193
3194 if (nvlist_dup(vdev, &varray[vcount++], 0) != 0)
3195 goto out;
3196 }
3197
3198 /* did we find every disk the user specified? */
3199 if (found != newchildren) {
3200 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must "
3201 "include at most one disk from each mirror"));
3202 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg);
3203 goto out;
3204 }
3205
3206 /* Prepare the nvlist for populating. */
3207 if (*newroot == NULL) {
3208 if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0)
3209 goto out;
3210 freelist = B_TRUE;
3211 if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE,
3212 VDEV_TYPE_ROOT) != 0)
3213 goto out;
3214 } else {
3215 verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0);
3216 }
3217
3218 /* Add all the children we found */
3219 if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray,
3220 lastlog == 0 ? vcount : lastlog) != 0)
3221 goto out;
3222
3223 /*
3224 * If we're just doing a dry run, exit now with success.
3225 */
3226 if (flags.dryrun) {
3227 memory_err = B_FALSE;
3228 freelist = B_FALSE;
3229 goto out;
3230 }
3231
3232 /* now build up the config list & call the ioctl */
3233 if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0)
3234 goto out;
3235
3236 if (nvlist_add_nvlist(newconfig,
3237 ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 ||
3238 nvlist_add_string(newconfig,
3239 ZPOOL_CONFIG_POOL_NAME, newname) != 0 ||
3240 nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0)
3241 goto out;
3242
3243 /*
3244 * The new pool is automatically part of the namespace unless we
3245 * explicitly export it.
3246 */
3247 if (!flags.import)
3248 zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT;
3249 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3250 (void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string));
3251 if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0)
3252 goto out;
3253 if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0)
3254 goto out;
3255
3256 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) {
3257 retval = zpool_standard_error(hdl, errno, msg);
3258 goto out;
3259 }
3260
3261 freelist = B_FALSE;
3262 memory_err = B_FALSE;
3263
3264out:
3265 if (varray != NULL) {
3266 int v;
3267
3268 for (v = 0; v < vcount; v++)
3269 nvlist_free(varray[v]);
3270 free(varray);
3271 }
3272 zcmd_free_nvlists(&zc);
8a5fc748
JJS		 3273 nvlist_free(zc_props);
3274 nvlist_free(newconfig);
428870ff
BB		 3275 if (freelist) {
3276 nvlist_free(*newroot);
3277 *newroot = NULL;
3278 }
3279
3280 if (retval != 0)
3281 return (retval);
3282
3283 if (memory_err)
3284 return (no_memory(hdl));
3285
3286 return (0);
3287}
3288
34dc7c2f 3289/*
a1d477c2 3290 * Remove the given device.
34dc7c2f
BB		 3291 */
3292int
3293zpool_vdev_remove(zpool_handle_t *zhp, const char *path)
3294{
13fe0198 3295 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 3296 char msg[1024];
3297 nvlist_t *tgt;
428870ff 3298 boolean_t avail_spare, l2cache, islog;
34dc7c2f 3299 libzfs_handle_t *hdl = zhp->zpool_hdl;
428870ff 3300 uint64_t version;
34dc7c2f
BB		 3301
3302 (void) snprintf(msg, sizeof (msg),
3303 dgettext(TEXT_DOMAIN, "cannot remove %s"), path);
3304
3305 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 3306 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
a1d477c2 3307 &islog)) == NULL)
34dc7c2f 3308 return (zfs_error(hdl, EZFS_NODEVICE, msg));
34dc7c2f 3309
428870ff
BB		 3310 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
3311 if (islog && version < SPA_VERSION_HOLES) {
3312 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
a1d477c2 3313 "pool must be upgraded to support log removal"));
428870ff
BB		 3314 return (zfs_error(hdl, EZFS_BADVERSION, msg));
3315 }
3316
a1d477c2
MA		 3317 if (!islog && !avail_spare && !l2cache && zpool_is_bootable(zhp)) {
3318 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3319 "root pool can not have removed devices, "
3320 "because GRUB does not understand them"));
3321 return (zfs_error(hdl, EINVAL, msg));
3322 }
3323
3324 zc.zc_guid = fnvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID);
3325
3326 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0)
3327 return (0);
3328
3329 switch (errno) {
3330
3331 case EINVAL:
3332 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3333 "invalid config; all top-level vdevs must "
3334 "have the same sector size and not be raidz."));
3335 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg);
3336 break;
3337
3338 case EBUSY:
2ffd89fc
PZ		 3339 if (islog) {
3340 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3341 "Mount encrypted datasets to replay logs."));
3342 } else {
3343 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3344 "Pool busy; removal may already be in progress"));
3345 }
a1d477c2
MA		 3346 (void) zfs_error(hdl, EZFS_BUSY, msg);
3347 break;
3348
2ffd89fc
PZ		 3349 case EACCES:
3350 if (islog) {
3351 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3352 "Mount encrypted datasets to replay logs."));
3353 (void) zfs_error(hdl, EZFS_BUSY, msg);
3354 } else {
3355 (void) zpool_standard_error(hdl, errno, msg);
3356 }
3357 break;
3358
a1d477c2
MA		 3359 default:
3360 (void) zpool_standard_error(hdl, errno, msg);
3361 }
3362 return (-1);
3363}
3364
3365int
3366zpool_vdev_remove_cancel(zpool_handle_t *zhp)
3367{
3368 zfs_cmd_t zc;
3369 char msg[1024];
3370 libzfs_handle_t *hdl = zhp->zpool_hdl;
3371
3372 (void) snprintf(msg, sizeof (msg),
3373 dgettext(TEXT_DOMAIN, "cannot cancel removal"));
3374
3375 bzero(&zc, sizeof (zc));
3376 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3377 zc.zc_cookie = 1;
34dc7c2f
BB		 3378
3379 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0)
3380 return (0);
3381
3382 return (zpool_standard_error(hdl, errno, msg));
3383}
3384
a1d477c2
MA		 3385int
3386zpool_vdev_indirect_size(zpool_handle_t *zhp, const char *path,
3387 uint64_t *sizep)
3388{
3389 char msg[1024];
3390 nvlist_t *tgt;
3391 boolean_t avail_spare, l2cache, islog;
3392 libzfs_handle_t *hdl = zhp->zpool_hdl;
3393
3394 (void) snprintf(msg, sizeof (msg),
3395 dgettext(TEXT_DOMAIN, "cannot determine indirect size of %s"),
3396 path);
3397
3398 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
3399 &islog)) == NULL)
3400 return (zfs_error(hdl, EZFS_NODEVICE, msg));
3401
3402 if (avail_spare || l2cache || islog) {
3403 *sizep = 0;
3404 return (0);
3405 }
3406
3407 if (nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_INDIRECT_SIZE, sizep) != 0) {
3408 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3409 "indirect size not available"));
3410 return (zfs_error(hdl, EINVAL, msg));
3411 }
3412 return (0);
3413}
3414
34dc7c2f
BB		 3415/*
3416 * Clear the errors for the pool, or the particular device if specified.
3417 */
3418int
428870ff 3419zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl)
34dc7c2f 3420{
13fe0198 3421 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 3422 char msg[1024];
3423 nvlist_t *tgt;
8a393be3 3424 zpool_load_policy_t policy;
34dc7c2f
BB		 3425 boolean_t avail_spare, l2cache;
3426 libzfs_handle_t *hdl = zhp->zpool_hdl;
428870ff 3427 nvlist_t *nvi = NULL;
572e2857 3428 int error;
34dc7c2f
BB		 3429
3430 if (path)
3431 (void) snprintf(msg, sizeof (msg),
3432 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"),
3433 path);
3434 else
3435 (void) snprintf(msg, sizeof (msg),
3436 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"),
3437 zhp->zpool_name);
3438
3439 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3440 if (path) {
3441 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare,
a1d477c2 3442 &l2cache, NULL)) == NULL)
34dc7c2f
BB		 3443 return (zfs_error(hdl, EZFS_NODEVICE, msg));
3444
3445 /*
3446 * Don't allow error clearing for hot spares. Do allow
3447 * error clearing for l2cache devices.
3448 */
3449 if (avail_spare)
3450 return (zfs_error(hdl, EZFS_ISSPARE, msg));
3451
3452 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID,
3453 &zc.zc_guid) == 0);
3454 }
3455
8a393be3
PZ		 3456 zpool_get_load_policy(rewindnvl, &policy);
3457 zc.zc_cookie = policy.zlp_rewind;
428870ff 3458
572e2857 3459 if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0)
428870ff
BB		 3460 return (-1);
3461
572e2857 3462 if (zcmd_write_src_nvlist(hdl, &zc, rewindnvl) != 0)
428870ff
BB		 3463 return (-1);
3464
572e2857
BB		 3465 while ((error = zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc)) != 0 &&
3466 errno == ENOMEM) {
3467 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
3468 zcmd_free_nvlists(&zc);
3469 return (-1);
3470 }
3471 }
3472
8a393be3 3473 if (!error || ((policy.zlp_rewind & ZPOOL_TRY_REWIND) &&
428870ff 3474 errno != EPERM && errno != EACCES)) {
8a393be3 3475 if (policy.zlp_rewind &
428870ff
BB		 3476 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) {
3477 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi);
3478 zpool_rewind_exclaim(hdl, zc.zc_name,
8a393be3 3479 ((policy.zlp_rewind & ZPOOL_TRY_REWIND) != 0),
428870ff
BB		 3480 nvi);
3481 nvlist_free(nvi);
3482 }
3483 zcmd_free_nvlists(&zc);
34dc7c2f 3484 return (0);
428870ff 3485 }
34dc7c2f 3486
428870ff 3487 zcmd_free_nvlists(&zc);
34dc7c2f
BB		 3488 return (zpool_standard_error(hdl, errno, msg));
3489}
3490
3491/*
3492 * Similar to zpool_clear(), but takes a GUID (used by fmd).
3493 */
3494int
3495zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid)
3496{
13fe0198 3497 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 3498 char msg[1024];
3499 libzfs_handle_t *hdl = zhp->zpool_hdl;
3500
3501 (void) snprintf(msg, sizeof (msg),
3502 dgettext(TEXT_DOMAIN, "cannot clear errors for %llx"),
d1d7e268 3503 (u_longlong_t)guid);
34dc7c2f
BB		 3504
3505 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3506 zc.zc_guid = guid;
428870ff 3507 zc.zc_cookie = ZPOOL_NO_REWIND;
34dc7c2f
BB		 3508
3509 if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0)
3510 return (0);
3511
3512 return (zpool_standard_error(hdl, errno, msg));
3513}
3514
3541dc6d
GA		 3515/*
3516 * Change the GUID for a pool.
3517 */
3518int
3519zpool_reguid(zpool_handle_t *zhp)
3520{
3521 char msg[1024];
3522 libzfs_handle_t *hdl = zhp->zpool_hdl;
13fe0198 3523 zfs_cmd_t zc = {"\0"};
3541dc6d
GA		 3524
3525 (void) snprintf(msg, sizeof (msg),
3526 dgettext(TEXT_DOMAIN, "cannot reguid '%s'"), zhp->zpool_name);
3527
3528 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3529 if (zfs_ioctl(hdl, ZFS_IOC_POOL_REGUID, &zc) == 0)
3530 return (0);
3531
3532 return (zpool_standard_error(hdl, errno, msg));
3533}
3534
1bd201e7
CS		 3535/*
3536 * Reopen the pool.
3537 */
3538int
d3f2cd7e 3539zpool_reopen_one(zpool_handle_t *zhp, void *data)
1bd201e7 3540{
d3f2cd7e
AB		 3541 libzfs_handle_t *hdl = zpool_get_handle(zhp);
3542 const char *pool_name = zpool_get_name(zhp);
3543 boolean_t *scrub_restart = data;
3544 int error;
1bd201e7 3545
d3f2cd7e
AB		 3546 error = lzc_reopen(pool_name, *scrub_restart);
3547 if (error) {
3548 return (zpool_standard_error_fmt(hdl, error,
3549 dgettext(TEXT_DOMAIN, "cannot reopen '%s'"), pool_name));
3550 }
1bd201e7 3551
d3f2cd7e 3552 return (0);
1bd201e7
CS		 3553}
3554
bec1067d
AP		 3555/* call into libzfs_core to execute the sync IOCTL per pool */
3556int
3557zpool_sync_one(zpool_handle_t *zhp, void *data)
3558{
3559 int ret;
3560 libzfs_handle_t *hdl = zpool_get_handle(zhp);
3561 const char *pool_name = zpool_get_name(zhp);
3562 boolean_t *force = data;
3563 nvlist_t *innvl = fnvlist_alloc();
3564
3565 fnvlist_add_boolean_value(innvl, "force", *force);
3566 if ((ret = lzc_sync(pool_name, innvl, NULL)) != 0) {
3567 nvlist_free(innvl);
3568 return (zpool_standard_error_fmt(hdl, ret,
3569 dgettext(TEXT_DOMAIN, "sync '%s' failed"), pool_name));
3570 }
3571 nvlist_free(innvl);
3572
3573 return (0);
3574}
3575
39fc0cb5 3576#if defined(__sun__) || defined(__sun)
34dc7c2f
BB		 3577/*
3578 * Convert from a devid string to a path.
3579 */
3580static char *
3581devid_to_path(char *devid_str)
3582{
3583 ddi_devid_t devid;
3584 char *minor;
3585 char *path;
3586 devid_nmlist_t *list = NULL;
3587 int ret;
3588
3589 if (devid_str_decode(devid_str, &devid, &minor) != 0)
3590 return (NULL);
3591
3592 ret = devid_deviceid_to_nmlist("/dev", devid, minor, &list);
3593
3594 devid_str_free(minor);
3595 devid_free(devid);
3596
3597 if (ret != 0)
3598 return (NULL);
3599
0fdd8d64
MT		 3600 /*
3601 * In a case the strdup() fails, we will just return NULL below.
3602 */
3603 path = strdup(list[0].devname);
34dc7c2f
BB		 3604
3605 devid_free_nmlist(list);
3606
3607 return (path);
3608}
3609
3610/*
3611 * Convert from a path to a devid string.
3612 */
3613static char *
3614path_to_devid(const char *path)
3615{
3616 int fd;
3617 ddi_devid_t devid;
3618 char *minor, *ret;
3619
3620 if ((fd = open(path, O_RDONLY)) < 0)
3621 return (NULL);
3622
3623 minor = NULL;
3624 ret = NULL;
3625 if (devid_get(fd, &devid) == 0) {
3626 if (devid_get_minor_name(fd, &minor) == 0)
3627 ret = devid_str_encode(devid, minor);
3628 if (minor != NULL)
3629 devid_str_free(minor);
3630 devid_free(devid);
3631 }
3632 (void) close(fd);
3633
3634 return (ret);
3635}
3636
3637/*
3638 * Issue the necessary ioctl() to update the stored path value for the vdev. We
3639 * ignore any failure here, since a common case is for an unprivileged user to
3640 * type 'zpool status', and we'll display the correct information anyway.
3641 */
3642static void
3643set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path)
3644{
13fe0198 3645 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 3646
3647 (void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3648 (void) strncpy(zc.zc_value, path, sizeof (zc.zc_value));
3649 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
3650 &zc.zc_guid) == 0);
3651
3652 (void) ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SETPATH, &zc);
3653}
39fc0cb5 3654#endif /* sun */
34dc7c2f 3655
83c62c93
NB		 3656/*
3657 * Remove partition suffix from a vdev path. Partition suffixes may take three
3658 * forms: "-partX", "pX", or "X", where X is a string of digits. The second
3659 * case only occurs when the suffix is preceded by a digit, i.e. "md0p0" The
3660 * third case only occurs when preceded by a string matching the regular
541da993 3661 * expression "^([hsv]|xv)d[a-z]+", i.e. a scsi, ide, virtio or xen disk.
d02ca379
DB		 3662 *
3663 * caller must free the returned string
83c62c93 3664 */
d02ca379 3665char *
6078881a 3666zfs_strip_partition(char *path)
83c62c93 3667{
6078881a 3668 char *tmp = strdup(path);
83c62c93 3669 char *part = NULL, *d = NULL;
6078881a
TH		 3670 if (!tmp)
3671 return (NULL);
83c62c93
NB		 3672
3673 if ((part = strstr(tmp, "-part")) && part != tmp) {
3674 d = part + 5;
3675 } else if ((part = strrchr(tmp, 'p')) &&
3676 part > tmp + 1 && isdigit(*(part-1))) {
3677 d = part + 1;
541da993
RY		 3678 } else if ((tmp[0] == 'h' || tmp[0] == 's' || tmp[0] == 'v') &&
3679 tmp[1] == 'd') {
02730c33 3680 for (d = &tmp[2]; isalpha(*d); part = ++d) { }
541da993 3681 } else if (strncmp("xvd", tmp, 3) == 0) {
02730c33 3682 for (d = &tmp[3]; isalpha(*d); part = ++d) { }
83c62c93
NB		 3683 }
3684 if (part && d && *d != '\0') {
02730c33 3685 for (; isdigit(*d); d++) { }
83c62c93
NB		 3686 if (*d == '\0')
3687 *part = '\0';
3688 }
6078881a 3689
83c62c93
NB		 3690 return (tmp);
3691}
3692
8720e9e7
TH		 3693/*
3694 * Same as zfs_strip_partition, but allows "/dev/" to be in the pathname
3695 *
3696 * path: /dev/sda1
3697 * returns: /dev/sda
3698 *
3699 * Returned string must be freed.
3700 */
3701char *
3702zfs_strip_partition_path(char *path)
3703{
3704 char *newpath = strdup(path);
3705 char *sd_offset;
3706 char *new_sd;
3707
3708 if (!newpath)
3709 return (NULL);
3710
3711 /* Point to "sda1" part of "/dev/sda1" */
3712 sd_offset = strrchr(newpath, '/') + 1;
3713
3714 /* Get our new name "sda" */
3715 new_sd = zfs_strip_partition(sd_offset);
3716 if (!new_sd) {
3717 free(newpath);
3718 return (NULL);
3719 }
3720
3721 /* Paste the "sda" where "sda1" was */
3722 strlcpy(sd_offset, new_sd, strlen(sd_offset) + 1);
3723
3724 /* Free temporary "sda" */
3725 free(new_sd);
3726
3727 return (newpath);
3728}
3729
858219cc
NB		 3730#define PATH_BUF_LEN 64
3731
34dc7c2f
BB		 3732/*
3733 * Given a vdev, return the name to display in iostat. If the vdev has a path,
3734 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type.
3735 * We also check if this is a whole disk, in which case we strip off the
3736 * trailing 's0' slice name.
3737 *
3738 * This routine is also responsible for identifying when disks have been
3739 * reconfigured in a new location. The kernel will have opened the device by
3740 * devid, but the path will still refer to the old location. To catch this, we
3741 * first do a path -> devid translation (which is fast for the common case). If
3742 * the devid matches, we're done. If not, we do a reverse devid -> path
3743 * translation and issue the appropriate ioctl() to update the path of the vdev.
3744 * If 'zhp' is NULL, then this is an exported pool, and we don't need to do any
3745 * of these checks.
3746 */
3747char *
428870ff 3748zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv,
d2f3e292 3749 int name_flags)
34dc7c2f 3750{
39fc0cb5 3751 char *path, *type, *env;
34dc7c2f 3752 uint64_t value;
858219cc 3753 char buf[PATH_BUF_LEN];
fc24f7c8 3754 char tmpbuf[PATH_BUF_LEN];
34dc7c2f 3755
2df9ad1c
GG		 3756 /*
3757 * vdev_name will be "root"/"root-0" for the root vdev, but it is the
3758 * zpool name that will be displayed to the user.
3759 */
3760 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) == 0);
3761 if (zhp != NULL && strcmp(type, "root") == 0)
3762 return (zfs_strdup(hdl, zpool_get_name(zhp)));
3763
d2f3e292
RY		 3764 env = getenv("ZPOOL_VDEV_NAME_PATH");
3765 if (env && (strtoul(env, NULL, 0) > 0 ||
3766 !strncasecmp(env, "YES", 3) || !strncasecmp(env, "ON", 2)))
3767 name_flags |= VDEV_NAME_PATH;
3768
3769 env = getenv("ZPOOL_VDEV_NAME_GUID");
3770 if (env && (strtoul(env, NULL, 0) > 0 ||
3771 !strncasecmp(env, "YES", 3) || !strncasecmp(env, "ON", 2)))
3772 name_flags |= VDEV_NAME_GUID;
3773
3774 env = getenv("ZPOOL_VDEV_NAME_FOLLOW_LINKS");
3775 if (env && (strtoul(env, NULL, 0) > 0 ||
3776 !strncasecmp(env, "YES", 3) || !strncasecmp(env, "ON", 2)))
3777 name_flags |= VDEV_NAME_FOLLOW_LINKS;
3778
3779 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, &value) == 0 ||
3780 name_flags & VDEV_NAME_GUID) {
aecdc706 3781 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value);
d2f3e292 3782 (void) snprintf(buf, sizeof (buf), "%llu", (u_longlong_t)value);
34dc7c2f
BB		 3783 path = buf;
3784 } else if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0) {
39fc0cb5
DB		 3785#if defined(__sun__) || defined(__sun)
3786 /*
3787 * Live VDEV path updates to a kernel VDEV during a
3788 * zpool_vdev_name lookup are not supported on Linux.
3789 */
3790 char *devid;
3791 vdev_stat_t *vs;
3792 uint_t vsc;
3793
34dc7c2f
BB		 3794 /*
3795 * If the device is dead (faulted, offline, etc) then don't
3796 * bother opening it. Otherwise we may be forcing the user to
3797 * open a misbehaving device, which can have undesirable
3798 * effects.
3799 */
428870ff 3800 if ((nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
34dc7c2f
BB		 3801 (uint64_t **)&vs, &vsc) != 0 ||
3802 vs->vs_state >= VDEV_STATE_DEGRADED) &&
3803 zhp != NULL &&
3804 nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &devid) == 0) {
3805 /*
3806 * Determine if the current path is correct.
3807 */
3808 char *newdevid = path_to_devid(path);
3809
3810 if (newdevid == NULL ||
3811 strcmp(devid, newdevid) != 0) {
3812 char *newpath;
3813
3814 if ((newpath = devid_to_path(devid)) != NULL) {
3815 /*
3816 * Update the path appropriately.
3817 */
3818 set_path(zhp, nv, newpath);
3819 if (nvlist_add_string(nv,
3820 ZPOOL_CONFIG_PATH, newpath) == 0)
3821 verify(nvlist_lookup_string(nv,
3822 ZPOOL_CONFIG_PATH,
3823 &path) == 0);
3824 free(newpath);
3825 }
3826 }
3827
3828 if (newdevid)
3829 devid_str_free(newdevid);
3830 }
39fc0cb5 3831#endif /* sun */
34dc7c2f 3832
d2f3e292
RY		 3833 if (name_flags & VDEV_NAME_FOLLOW_LINKS) {
3834 char *rp = realpath(path, NULL);
3835 if (rp) {
3836 strlcpy(buf, rp, sizeof (buf));
3837 path = buf;
3838 free(rp);
3839 }
3840 }
3841
d603ed6c
BB		 3842 /*
3843 * For a block device only use the name.
3844 */
d2f3e292
RY		 3845 if ((strcmp(type, VDEV_TYPE_DISK) == 0) &&
3846 !(name_flags & VDEV_NAME_PATH)) {
d603ed6c
BB		 3847 path = strrchr(path, '/');
3848 path++;
3849 }
34dc7c2f 3850
d603ed6c 3851 /*
83c62c93 3852 * Remove the partition from the path it this is a whole disk.
d603ed6c 3853 */
d2f3e292
RY		 3854 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, &value)
3855 == 0 && value && !(name_flags & VDEV_NAME_PATH)) {
6078881a 3856 return (zfs_strip_partition(path));
34dc7c2f
BB		 3857 }
3858 } else {
2df9ad1c 3859 path = type;
34dc7c2f
BB		 3860
3861 /*
3862 * If it's a raidz device, we need to stick in the parity level.
3863 */
3864 if (strcmp(path, VDEV_TYPE_RAIDZ) == 0) {
3865 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY,
3866 &value) == 0);
fc24f7c8 3867 (void) snprintf(buf, sizeof (buf), "%s%llu", path,
34dc7c2f 3868 (u_longlong_t)value);
fc24f7c8 3869 path = buf;
34dc7c2f 3870 }
428870ff
BB		 3871
3872 /*
3873 * We identify each top-level vdev by using a <type-id>
3874 * naming convention.
3875 */
d2f3e292 3876 if (name_flags & VDEV_NAME_TYPE_ID) {
428870ff 3877 uint64_t id;
428870ff
BB		 3878 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID,
3879 &id) == 0);
fc24f7c8
MM		 3880 (void) snprintf(tmpbuf, sizeof (tmpbuf), "%s-%llu",
3881 path, (u_longlong_t)id);
3882 path = tmpbuf;
428870ff 3883 }
34dc7c2f
BB		 3884 }
3885
3886 return (zfs_strdup(hdl, path));
3887}
3888
3889static int
fcff0f35 3890zbookmark_mem_compare(const void *a, const void *b)
34dc7c2f 3891{
5dbd68a3 3892 return (memcmp(a, b, sizeof (zbookmark_phys_t)));
34dc7c2f
BB		 3893}
3894
3895/*
3896 * Retrieve the persistent error log, uniquify the members, and return to the
3897 * caller.
3898 */
3899int
3900zpool_get_errlog(zpool_handle_t *zhp, nvlist_t **nverrlistp)
3901{
13fe0198 3902 zfs_cmd_t zc = {"\0"};
56a6054d 3903 libzfs_handle_t *hdl = zhp->zpool_hdl;
34dc7c2f 3904 uint64_t count;
5dbd68a3 3905 zbookmark_phys_t *zb = NULL;
34dc7c2f
BB		 3906 int i;
3907
3908 /*
3909 * Retrieve the raw error list from the kernel. If the number of errors
3910 * has increased, allocate more space and continue until we get the
3911 * entire list.
3912 */
3913 verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_ERRCOUNT,
3914 &count) == 0);
3915 if (count == 0)
3916 return (0);
56a6054d
BB		 3917 zc.zc_nvlist_dst = (uintptr_t)zfs_alloc(zhp->zpool_hdl,
3918 count * sizeof (zbookmark_phys_t));
34dc7c2f
BB		 3919 zc.zc_nvlist_dst_size = count;
3920 (void) strcpy(zc.zc_name, zhp->zpool_name);
3921 for (;;) {
3922 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_ERROR_LOG,
3923 &zc) != 0) {
3924 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3925 if (errno == ENOMEM) {
5dbd68a3
MA		 3926 void *dst;
3927
34dc7c2f 3928 count = zc.zc_nvlist_dst_size;
5dbd68a3
MA		 3929 dst = zfs_alloc(zhp->zpool_hdl, count *
3930 sizeof (zbookmark_phys_t));
5dbd68a3 3931 zc.zc_nvlist_dst = (uintptr_t)dst;
34dc7c2f 3932 } else {
56a6054d
BB		 3933 return (zpool_standard_error_fmt(hdl, errno,
3934 dgettext(TEXT_DOMAIN, "errors: List of "
3935 "errors unavailable")));
34dc7c2f
BB		 3936 }
3937 } else {
3938 break;
3939 }
3940 }
3941
3942 /*
3943 * Sort the resulting bookmarks. This is a little confusing due to the
3944 * implementation of ZFS_IOC_ERROR_LOG. The bookmarks are copied last
3945 * to first, and 'zc_nvlist_dst_size' indicates the number of boomarks
3946 * _not_ copied as part of the process. So we point the start of our
3947 * array appropriate and decrement the total number of elements.
3948 */
5dbd68a3 3949 zb = ((zbookmark_phys_t *)(uintptr_t)zc.zc_nvlist_dst) +
34dc7c2f
BB		 3950 zc.zc_nvlist_dst_size;
3951 count -= zc.zc_nvlist_dst_size;
3952
fcff0f35 3953 qsort(zb, count, sizeof (zbookmark_phys_t), zbookmark_mem_compare);
34dc7c2f
BB		 3954
3955 verify(nvlist_alloc(nverrlistp, 0, KM_SLEEP) == 0);
3956
3957 /*
3958 * Fill in the nverrlistp with nvlist's of dataset and object numbers.
3959 */
3960 for (i = 0; i < count; i++) {
3961 nvlist_t *nv;
3962
3963 /* ignoring zb_blkid and zb_level for now */
3964 if (i > 0 && zb[i-1].zb_objset == zb[i].zb_objset &&
3965 zb[i-1].zb_object == zb[i].zb_object)
3966 continue;
3967
3968 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) != 0)
3969 goto nomem;
3970 if (nvlist_add_uint64(nv, ZPOOL_ERR_DATASET,
3971 zb[i].zb_objset) != 0) {
3972 nvlist_free(nv);
3973 goto nomem;
3974 }
3975 if (nvlist_add_uint64(nv, ZPOOL_ERR_OBJECT,
3976 zb[i].zb_object) != 0) {
3977 nvlist_free(nv);
3978 goto nomem;
3979 }
3980 if (nvlist_add_nvlist(*nverrlistp, "ejk", nv) != 0) {
3981 nvlist_free(nv);
3982 goto nomem;
3983 }
3984 nvlist_free(nv);
3985 }
3986
3987 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3988 return (0);
3989
3990nomem:
3991 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3992 return (no_memory(zhp->zpool_hdl));
3993}
3994
3995/*
3996 * Upgrade a ZFS pool to the latest on-disk version.
3997 */
3998int
3999zpool_upgrade(zpool_handle_t *zhp, uint64_t new_version)
4000{
13fe0198 4001 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 4002 libzfs_handle_t *hdl = zhp->zpool_hdl;
4003
4004 (void) strcpy(zc.zc_name, zhp->zpool_name);
4005 zc.zc_cookie = new_version;
4006
4007 if (zfs_ioctl(hdl, ZFS_IOC_POOL_UPGRADE, &zc) != 0)
4008 return (zpool_standard_error_fmt(hdl, errno,
4009 dgettext(TEXT_DOMAIN, "cannot upgrade '%s'"),
4010 zhp->zpool_name));
4011 return (0);
4012}
4013
4014void
6f1ffb06 4015zfs_save_arguments(int argc, char **argv, char *string, int len)
34dc7c2f
BB		 4016{
4017 int i;
4018
6f1ffb06 4019 (void) strlcpy(string, basename(argv[0]), len);
34dc7c2f 4020 for (i = 1; i < argc; i++) {
6f1ffb06
MA		 4021 (void) strlcat(string, " ", len);
4022 (void) strlcat(string, argv[i], len);
34dc7c2f
BB		 4023 }
4024}
4025
34dc7c2f 4026int
6f1ffb06
MA		 4027zpool_log_history(libzfs_handle_t *hdl, const char *message)
4028{
13fe0198 4029 zfs_cmd_t zc = {"\0"};
6f1ffb06
MA		 4030 nvlist_t *args;
4031 int err;
4032
4033 args = fnvlist_alloc();
4034 fnvlist_add_string(args, "message", message);
4035 err = zcmd_write_src_nvlist(hdl, &zc, args);
4036 if (err == 0)
4037 err = ioctl(hdl->libzfs_fd, ZFS_IOC_LOG_HISTORY, &zc);
4038 nvlist_free(args);
4039 zcmd_free_nvlists(&zc);
4040 return (err);
34dc7c2f
BB		 4041}
4042
4043/*
4044 * Perform ioctl to get some command history of a pool.
4045 *
4046 * 'buf' is the buffer to fill up to 'len' bytes. 'off' is the
4047 * logical offset of the history buffer to start reading from.
4048 *
4049 * Upon return, 'off' is the next logical offset to read from and
4050 * 'len' is the actual amount of bytes read into 'buf'.
4051 */
4052static int
4053get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len)
4054{
13fe0198 4055 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 4056 libzfs_handle_t *hdl = zhp->zpool_hdl;
4057
4058 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
4059
4060 zc.zc_history = (uint64_t)(uintptr_t)buf;
4061 zc.zc_history_len = *len;
4062 zc.zc_history_offset = *off;
4063
4064 if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_HISTORY, &zc) != 0) {
4065 switch (errno) {
4066 case EPERM:
4067 return (zfs_error_fmt(hdl, EZFS_PERM,
4068 dgettext(TEXT_DOMAIN,
4069 "cannot show history for pool '%s'"),
4070 zhp->zpool_name));
4071 case ENOENT:
4072 return (zfs_error_fmt(hdl, EZFS_NOHISTORY,
4073 dgettext(TEXT_DOMAIN, "cannot get history for pool "
4074 "'%s'"), zhp->zpool_name));
4075 case ENOTSUP:
4076 return (zfs_error_fmt(hdl, EZFS_BADVERSION,
4077 dgettext(TEXT_DOMAIN, "cannot get history for pool "
4078 "'%s', pool must be upgraded"), zhp->zpool_name));
4079 default:
4080 return (zpool_standard_error_fmt(hdl, errno,
4081 dgettext(TEXT_DOMAIN,
4082 "cannot get history for '%s'"), zhp->zpool_name));
4083 }
4084 }
4085
4086 *len = zc.zc_history_len;
4087 *off = zc.zc_history_offset;
4088
4089 return (0);
4090}
4091
4092/*
4093 * Process the buffer of nvlists, unpacking and storing each nvlist record
4094 * into 'records'. 'leftover' is set to the number of bytes that weren't
4095 * processed as there wasn't a complete record.
4096 */
428870ff 4097int
34dc7c2f
BB		 4098zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover,
4099 nvlist_t ***records, uint_t *numrecords)
4100{
4101 uint64_t reclen;
4102 nvlist_t *nv;
4103 int i;
687e612f 4104 void *tmp;
34dc7c2f
BB		 4105
4106 while (bytes_read > sizeof (reclen)) {
4107
4108 /* get length of packed record (stored as little endian) */
4109 for (i = 0, reclen = 0; i < sizeof (reclen); i++)
4110 reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i);
4111
4112 if (bytes_read < sizeof (reclen) + reclen)
4113 break;
4114
4115 /* unpack record */
4116 if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0)
4117 return (ENOMEM);
4118 bytes_read -= sizeof (reclen) + reclen;
4119 buf += sizeof (reclen) + reclen;
4120
4121 /* add record to nvlist array */
4122 (*numrecords)++;
4123 if (ISP2(*numrecords + 1)) {
687e612f 4124 tmp = realloc(*records,
34dc7c2f 4125 *numrecords * 2 * sizeof (nvlist_t *));
687e612f
GM		 4126 if (tmp == NULL) {
4127 nvlist_free(nv);
4128 (*numrecords)--;
4129 return (ENOMEM);
4130 }
4131 *records = tmp;
34dc7c2f
BB		 4132 }
4133 (*records)[*numrecords - 1] = nv;
4134 }
4135
4136 *leftover = bytes_read;
4137 return (0);
4138}
4139
34dc7c2f
BB		 4140/*
4141 * Retrieve the command history of a pool.
4142 */
4143int
4144zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp)
4145{
1f6f97f3
MA		 4146 char *buf;
4147 int buflen = 128 * 1024;
34dc7c2f
BB		 4148 uint64_t off = 0;
4149 nvlist_t **records = NULL;
4150 uint_t numrecords = 0;
4151 int err, i;
4152
1f6f97f3
MA		 4153 buf = malloc(buflen);
4154 if (buf == NULL)
4155 return (ENOMEM);
34dc7c2f 4156 do {
1f6f97f3 4157 uint64_t bytes_read = buflen;
34dc7c2f
BB		 4158 uint64_t leftover;
4159
4160 if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0)
4161 break;
4162
4163 /* if nothing else was read in, we're at EOF, just return */
4164 if (!bytes_read)
4165 break;
4166
4167 if ((err = zpool_history_unpack(buf, bytes_read,
4168 &leftover, &records, &numrecords)) != 0)
4169 break;
4170 off -= leftover;
1f6f97f3
MA		 4171 if (leftover == bytes_read) {
4172 /*
4173 * no progress made, because buffer is not big enough
4174 * to hold this record; resize and retry.
4175 */
4176 buflen *= 2;
4177 free(buf);
4178 buf = malloc(buflen);
4179 if (buf == NULL)
4180 return (ENOMEM);
4181 }
34dc7c2f
BB		 4182
4183 /* CONSTCOND */
4184 } while (1);
4185
1f6f97f3
MA		 4186 free(buf);
4187
34dc7c2f
BB		 4188 if (!err) {
4189 verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0);
4190 verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD,
4191 records, numrecords) == 0);
4192 }
4193 for (i = 0; i < numrecords; i++)
4194 nvlist_free(records[i]);
4195 free(records);
4196
4197 return (err);
4198}
4199
26685276 4200/*
9b101a73
BB		 4201 * Retrieve the next event given the passed 'zevent_fd' file descriptor.
4202 * If there is a new event available 'nvp' will contain a newly allocated
4203 * nvlist and 'dropped' will be set to the number of missed events since
4204 * the last call to this function. When 'nvp' is set to NULL it indicates
4205 * no new events are available. In either case the function returns 0 and
4206 * it is up to the caller to free 'nvp'. In the case of a fatal error the
4207 * function will return a non-zero value. When the function is called in
8c7aa0cf
CD		 4208 * blocking mode (the default, unless the ZEVENT_NONBLOCK flag is passed),
4209 * it will not return until a new event is available.
26685276
BB		 4210 */
4211int
4212zpool_events_next(libzfs_handle_t *hdl, nvlist_t **nvp,
8c7aa0cf 4213 int *dropped, unsigned flags, int zevent_fd)
26685276 4214{
13fe0198 4215 zfs_cmd_t zc = {"\0"};
26685276
BB		 4216 int error = 0;
4217
4218 *nvp = NULL;
4219 *dropped = 0;
9b101a73 4220 zc.zc_cleanup_fd = zevent_fd;
26685276 4221
8c7aa0cf 4222 if (flags & ZEVENT_NONBLOCK)
26685276
BB		 4223 zc.zc_guid = ZEVENT_NONBLOCK;
4224
4225 if (zcmd_alloc_dst_nvlist(hdl, &zc, ZEVENT_SIZE) != 0)
4226 return (-1);
4227
4228retry:
4229 if (zfs_ioctl(hdl, ZFS_IOC_EVENTS_NEXT, &zc) != 0) {
4230 switch (errno) {
4231 case ESHUTDOWN:
4232 error = zfs_error_fmt(hdl, EZFS_POOLUNAVAIL,
4233 dgettext(TEXT_DOMAIN, "zfs shutdown"));
4234 goto out;
4235 case ENOENT:
4236 /* Blocking error case should not occur */
8c7aa0cf 4237 if (!(flags & ZEVENT_NONBLOCK))
26685276
BB		 4238 error = zpool_standard_error_fmt(hdl, errno,
4239 dgettext(TEXT_DOMAIN, "cannot get event"));
4240
4241 goto out;
4242 case ENOMEM:
4243 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
4244 error = zfs_error_fmt(hdl, EZFS_NOMEM,
4245 dgettext(TEXT_DOMAIN, "cannot get event"));
4246 goto out;
4247 } else {
4248 goto retry;
4249 }
4250 default:
4251 error = zpool_standard_error_fmt(hdl, errno,
4252 dgettext(TEXT_DOMAIN, "cannot get event"));
4253 goto out;
4254 }
4255 }
4256
4257 error = zcmd_read_dst_nvlist(hdl, &zc, nvp);
4258 if (error != 0)
4259 goto out;
4260
4261 *dropped = (int)zc.zc_cookie;
4262out:
4263 zcmd_free_nvlists(&zc);
4264
4265 return (error);
4266}
4267
4268/*
4269 * Clear all events.
4270 */
4271int
4272zpool_events_clear(libzfs_handle_t *hdl, int *count)
4273{
13fe0198 4274 zfs_cmd_t zc = {"\0"};
26685276
BB		 4275 char msg[1024];
4276
4277 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
4278 "cannot clear events"));
4279
4280 if (zfs_ioctl(hdl, ZFS_IOC_EVENTS_CLEAR, &zc) != 0)
4281 return (zpool_standard_error_fmt(hdl, errno, msg));
4282
4283 if (count != NULL)
4284 *count = (int)zc.zc_cookie; /* # of events cleared */
4285
4286 return (0);
4287}
4288
75e3ff58
BB		 4289/*
4290 * Seek to a specific EID, ZEVENT_SEEK_START, or ZEVENT_SEEK_END for
4291 * the passed zevent_fd file handle. On success zero is returned,
4292 * otherwise -1 is returned and hdl->libzfs_error is set to the errno.
4293 */
4294int
4295zpool_events_seek(libzfs_handle_t *hdl, uint64_t eid, int zevent_fd)
4296{
4297 zfs_cmd_t zc = {"\0"};
4298 int error = 0;
4299
4300 zc.zc_guid = eid;
4301 zc.zc_cleanup_fd = zevent_fd;
4302
4303 if (zfs_ioctl(hdl, ZFS_IOC_EVENTS_SEEK, &zc) != 0) {
4304 switch (errno) {
4305 case ENOENT:
4306 error = zfs_error_fmt(hdl, EZFS_NOENT,
4307 dgettext(TEXT_DOMAIN, "cannot get event"));
4308 break;
4309
4310 case ENOMEM:
4311 error = zfs_error_fmt(hdl, EZFS_NOMEM,
4312 dgettext(TEXT_DOMAIN, "cannot get event"));
4313 break;
4314
4315 default:
4316 error = zpool_standard_error_fmt(hdl, errno,
4317 dgettext(TEXT_DOMAIN, "cannot get event"));
4318 break;
4319 }
4320 }
4321
4322 return (error);
4323}
4324
34dc7c2f
BB		 4325void
4326zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj,
4327 char *pathname, size_t len)
4328{
13fe0198 4329 zfs_cmd_t zc = {"\0"};
34dc7c2f
BB		 4330 boolean_t mounted = B_FALSE;
4331 char *mntpnt = NULL;
eca7b760 4332 char dsname[ZFS_MAX_DATASET_NAME_LEN];
34dc7c2f
BB		 4333
4334 if (dsobj == 0) {
4335 /* special case for the MOS */
d1d7e268
MK		 4336 (void) snprintf(pathname, len, "<metadata>:<0x%llx>",
4337 (longlong_t)obj);
34dc7c2f
BB		 4338 return;
4339 }
4340
4341 /* get the dataset's name */
4342 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
4343 zc.zc_obj = dsobj;
4344 if (ioctl(zhp->zpool_hdl->libzfs_fd,
4345 ZFS_IOC_DSOBJ_TO_DSNAME, &zc) != 0) {
4346 /* just write out a path of two object numbers */
4347 (void) snprintf(pathname, len, "<0x%llx>:<0x%llx>",
b8864a23 4348 (longlong_t)dsobj, (longlong_t)obj);
34dc7c2f
BB		 4349 return;
4350 }
4351 (void) strlcpy(dsname, zc.zc_value, sizeof (dsname));
4352
4353 /* find out if the dataset is mounted */
4354 mounted = is_mounted(zhp->zpool_hdl, dsname, &mntpnt);
4355
4356 /* get the corrupted object's path */
4357 (void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name));
4358 zc.zc_obj = obj;
4359 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_PATH,
4360 &zc) == 0) {
4361 if (mounted) {
4362 (void) snprintf(pathname, len, "%s%s", mntpnt,
4363 zc.zc_value);
4364 } else {
4365 (void) snprintf(pathname, len, "%s:%s",
4366 dsname, zc.zc_value);
4367 }
4368 } else {
d1d7e268
MK		 4369 (void) snprintf(pathname, len, "%s:<0x%llx>", dsname,
4370 (longlong_t)obj);
34dc7c2f
BB		 4371 }
4372 free(mntpnt);
4373}
4374
b128c09f
BB		 4375/*
4376 * Read the EFI label from the config, if a label does not exist then
4377 * pass back the error to the caller. If the caller has passed a non-NULL
4378 * diskaddr argument then we set it to the starting address of the EFI
4379 * partition.
4380 */
4381static int
4382read_efi_label(nvlist_t *config, diskaddr_t *sb)
4383{
4384 char *path;
4385 int fd;
4386 char diskname[MAXPATHLEN];
4387 int err = -1;
4388
4389 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PATH, &path) != 0)
4390 return (err);
4391
eac47204 4392 (void) snprintf(diskname, sizeof (diskname), "%s%s", DISK_ROOT,
b128c09f 4393 strrchr(path, '/'));
dbb38f66 4394 if ((fd = open(diskname, O_RDONLY|O_DIRECT)) >= 0) {
b128c09f
BB		 4395 struct dk_gpt *vtoc;
4396
4397 if ((err = efi_alloc_and_read(fd, &vtoc)) >= 0) {
4398 if (sb != NULL)
4399 *sb = vtoc->efi_parts[0].p_start;
4400 efi_free(vtoc);
4401 }
4402 (void) close(fd);
4403 }
4404 return (err);
4405}
4406
34dc7c2f
BB		 4407/*
4408 * determine where a partition starts on a disk in the current
4409 * configuration
4410 */
4411static diskaddr_t
4412find_start_block(nvlist_t *config)
4413{
4414 nvlist_t **child;
4415 uint_t c, children;
34dc7c2f 4416 diskaddr_t sb = MAXOFFSET_T;
34dc7c2f
BB		 4417 uint64_t wholedisk;
4418
4419 if (nvlist_lookup_nvlist_array(config,
4420 ZPOOL_CONFIG_CHILDREN, &child, &children) != 0) {
4421 if (nvlist_lookup_uint64(config,
4422 ZPOOL_CONFIG_WHOLE_DISK,
4423 &wholedisk) != 0 || !wholedisk) {
4424 return (MAXOFFSET_T);
4425 }
b128c09f
BB		 4426 if (read_efi_label(config, &sb) < 0)
4427 sb = MAXOFFSET_T;
34dc7c2f
BB		 4428 return (sb);
4429 }
4430
4431 for (c = 0; c < children; c++) {
4432 sb = find_start_block(child[c]);
4433 if (sb != MAXOFFSET_T) {
4434 return (sb);
4435 }
4436 }
4437 return (MAXOFFSET_T);
4438}
4439
2d82ea8b 4440static int
d603ed6c
BB		 4441zpool_label_disk_check(char *path)
4442{
4443 struct dk_gpt *vtoc;
4444 int fd, err;
4445
dbb38f66 4446 if ((fd = open(path, O_RDONLY|O_DIRECT)) < 0)
d1d7e268 4447 return (errno);
d603ed6c
BB		 4448
4449 if ((err = efi_alloc_and_read(fd, &vtoc)) != 0) {
4450 (void) close(fd);
d1d7e268 4451 return (err);
d603ed6c
BB		 4452 }
4453
4454 if (vtoc->efi_flags & EFI_GPT_PRIMARY_CORRUPT) {
4455 efi_free(vtoc);
4456 (void) close(fd);
d1d7e268 4457 return (EIDRM);
d603ed6c
BB		 4458 }
4459
4460 efi_free(vtoc);
4461 (void) close(fd);
d1d7e268 4462 return (0);
d603ed6c
BB		 4463}
4464
5b4136bd
BB		 4465/*
4466 * Generate a unique partition name for the ZFS member. Partitions must
4467 * have unique names to ensure udev will be able to create symlinks under
4468 * /dev/disk/by-partlabel/ for all pool members. The partition names are
4469 * of the form <pool>-<unique-id>.
4470 */
4471static void
4472zpool_label_name(char *label_name, int label_size)
4473{
4474 uint64_t id = 0;
4475 int fd;
4476
4477 fd = open("/dev/urandom", O_RDONLY);
06cf4d98 4478 if (fd >= 0) {
5b4136bd
BB		 4479 if (read(fd, &id, sizeof (id)) != sizeof (id))
4480 id = 0;
4481
4482 close(fd);
4483 }
4484
4485 if (id == 0)
4486 id = (((uint64_t)rand()) << 32) | (uint64_t)rand();
4487
02730c33 4488 snprintf(label_name, label_size, "zfs-%016llx", (u_longlong_t)id);
5b4136bd
BB		 4489}
4490
34dc7c2f
BB		 4491/*
4492 * Label an individual disk. The name provided is the short name,
4493 * stripped of any leading /dev path.
4494 */
4495int
4496zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, char *name)
4497{
4498 char path[MAXPATHLEN];
4499 struct dk_gpt *vtoc;
d603ed6c 4500 int rval, fd;
34dc7c2f
BB		 4501 size_t resv = EFI_MIN_RESV_SIZE;
4502 uint64_t slice_size;
4503 diskaddr_t start_block;
4504 char errbuf[1024];
4505
4506 /* prepare an error message just in case */
4507 (void) snprintf(errbuf, sizeof (errbuf),
4508 dgettext(TEXT_DOMAIN, "cannot label '%s'"), name);
4509
4510 if (zhp) {
4511 nvlist_t *nvroot;
4512
4513 verify(nvlist_lookup_nvlist(zhp->zpool_config,
4514 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
4515
4516 if (zhp->zpool_start_block == 0)
4517 start_block = find_start_block(nvroot);
4518 else
4519 start_block = zhp->zpool_start_block;
4520 zhp->zpool_start_block = start_block;
4521 } else {
4522 /* new pool */
4523 start_block = NEW_START_BLOCK;
4524 }
4525
eac47204 4526 (void) snprintf(path, sizeof (path), "%s/%s", DISK_ROOT, name);
34dc7c2f 4527
d02ca379 4528 if ((fd = open(path, O_RDWR|O_DIRECT|O_EXCL)) < 0) {
34dc7c2f
BB		 4529 /*
4530 * This shouldn't happen. We've long since verified that this
4531 * is a valid device.
4532 */
109491a8
RL		 4533 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
4534 "label '%s': unable to open device: %d"), path, errno);
34dc7c2f
BB		 4535 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf));
4536 }
4537
4538 if (efi_alloc_and_init(fd, EFI_NUMPAR, &vtoc) != 0) {
4539 /*
4540 * The only way this can fail is if we run out of memory, or we
4541 * were unable to read the disk's capacity
4542 */
4543 if (errno == ENOMEM)
4544 (void) no_memory(hdl);
4545
4546 (void) close(fd);
109491a8
RL		 4547 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
4548 "label '%s': unable to read disk capacity"), path);
34dc7c2f
BB		 4549
4550 return (zfs_error(hdl, EZFS_NOCAP, errbuf));
4551 }
4552
4553 slice_size = vtoc->efi_last_u_lba + 1;
4554 slice_size -= EFI_MIN_RESV_SIZE;
4555 if (start_block == MAXOFFSET_T)
4556 start_block = NEW_START_BLOCK;
4557 slice_size -= start_block;
613d88ed 4558 slice_size = P2ALIGN(slice_size, PARTITION_END_ALIGNMENT);
34dc7c2f
BB		 4559
4560 vtoc->efi_parts[0].p_start = start_block;
4561 vtoc->efi_parts[0].p_size = slice_size;
4562
4563 /*
4564 * Why we use V_USR: V_BACKUP confuses users, and is considered
4565 * disposable by some EFI utilities (since EFI doesn't have a backup
4566 * slice). V_UNASSIGNED is supposed to be used only for zero size
4567 * partitions, and efi_write() will fail if we use it. V_ROOT, V_BOOT,
4568 * etc. were all pretty specific. V_USR is as close to reality as we
4569 * can get, in the absence of V_OTHER.
4570 */
4571 vtoc->efi_parts[0].p_tag = V_USR;
5b4136bd 4572 zpool_label_name(vtoc->efi_parts[0].p_name, EFI_PART_NAME_LEN);
34dc7c2f
BB		 4573
4574 vtoc->efi_parts[8].p_start = slice_size + start_block;
4575 vtoc->efi_parts[8].p_size = resv;
4576 vtoc->efi_parts[8].p_tag = V_RESERVED;
4577
dbb38f66
YP		 4578 rval = efi_write(fd, vtoc);
4579
4580 /* Flush the buffers to disk and invalidate the page cache. */
4581 (void) fsync(fd);
4582 (void) ioctl(fd, BLKFLSBUF);
4583
4584 if (rval == 0)
4585 rval = efi_rescan(fd);
4586
4587 /*
4588 * Some block drivers (like pcata) may not support EFI GPT labels.
4589 * Print out a helpful error message directing the user to manually
4590 * label the disk and give a specific slice.
4591 */
4592 if (rval != 0) {
34dc7c2f
BB		 4593 (void) close(fd);
4594 efi_free(vtoc);
4595
d603ed6c
BB		 4596 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "try using "
4597 "parted(8) and then provide a specific slice: %d"), rval);
34dc7c2f
BB		 4598 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf));
4599 }
4600
4601 (void) close(fd);
4602 efi_free(vtoc);
34dc7c2f 4603
eac47204
BB		 4604 (void) snprintf(path, sizeof (path), "%s/%s", DISK_ROOT, name);
4605 (void) zfs_append_partition(path, MAXPATHLEN);
4606
2d82ea8b
BB		 4607 /* Wait to udev to signal use the device has settled. */
4608 rval = zpool_label_disk_wait(path, DISK_LABEL_WAIT);
d603ed6c
BB		 4609 if (rval) {
4610 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "failed to "
4611 "detect device partitions on '%s': %d"), path, rval);
4612 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf));
34dc7c2f
BB		 4613 }
4614
d603ed6c
BB		 4615 /* We can't be to paranoid. Read the label back and verify it. */
4616 (void) snprintf(path, sizeof (path), "%s/%s", DISK_ROOT, name);
4617 rval = zpool_label_disk_check(path);
4618 if (rval) {
4619 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "freshly written "
4620 "EFI label on '%s' is damaged. Ensure\nthis device "
4621 "is not in in use, and is functioning properly: %d"),
4622 path, rval);
4623 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf));
34dc7c2f 4624 }
34dc7c2f 4625
d1d7e268 4626 return (0);
34dc7c2f 4627}
6078881a 4628
6078881a
TH		 4629/*
4630 * Allocate and return the underlying device name for a device mapper device.
4631 * If a device mapper device maps to multiple devices, return the first device.
4632 *
8720e9e7
TH		 4633 * For example, dm_name = "/dev/dm-0" could return "/dev/sda". Symlinks to a
4634 * DM device (like /dev/disk/by-vdev/A0) are also allowed.
6078881a
TH		 4635 *
4636 * Returns device name, or NULL on error or no match. If dm_name is not a DM
4637 * device then return NULL.
4638 *
4639 * NOTE: The returned name string must be *freed*.
4640 */
8720e9e7
TH		 4641char *
4642dm_get_underlying_path(char *dm_name)
6078881a 4643{
8720e9e7
TH		 4644 DIR *dp = NULL;
4645 struct dirent *ep;
4646 char *realp;
4647 char *tmp = NULL;
4648 char *path = NULL;
4649 char *dev_str;
4650 int size;
6078881a 4651
8720e9e7
TH		 4652 if (dm_name == NULL)
4653 return (NULL);
4654
4655 /* dm name may be a symlink (like /dev/disk/by-vdev/A0) */
4656 realp = realpath(dm_name, NULL);
4657 if (realp == NULL)
4658 return (NULL);
6078881a
TH		 4659
4660 /*
8720e9e7
TH		 4661 * If they preface 'dev' with a path (like "/dev") then strip it off.
4662 * We just want the 'dm-N' part.
6078881a 4663 */
8720e9e7
TH		 4664 tmp = strrchr(realp, '/');
4665 if (tmp != NULL)
4666 dev_str = tmp + 1; /* +1 since we want the chr after '/' */
4667 else
4668 dev_str = tmp;
6078881a 4669
8720e9e7
TH		 4670 size = asprintf(&tmp, "/sys/block/%s/slaves/", dev_str);
4671 if (size == -1 || !tmp)
6078881a
TH		 4672 goto end;
4673
8720e9e7
TH		 4674 dp = opendir(tmp);
4675 if (dp == NULL)
6078881a
TH		 4676 goto end;
4677
8720e9e7
TH		 4678 /* Return first sd* entry in /sys/block/dm-N/slaves/ */
4679 while ((ep = readdir(dp))) {
4680 if (ep->d_type != DT_DIR) { /* skip "." and ".." dirs */
4681 size = asprintf(&path, "/dev/%s", ep->d_name);
4682 break;
4683 }
4684 }
6078881a
TH		 4685
4686end:
8720e9e7
TH		 4687 if (dp != NULL)
4688 closedir(dp);
4689 free(tmp);
4690 free(realp);
4691 return (path);
6078881a
TH		 4692}
4693
4694/*
4695 * Return 1 if device is a device mapper or multipath device.
4696 * Return 0 if not.
4697 */
4698int
1bbd8770 4699zfs_dev_is_dm(char *dev_name)
6078881a
TH		 4700{
4701
4702 char *tmp;
1bbd8770 4703 tmp = dm_get_underlying_path(dev_name);
8720e9e7 4704 if (tmp == NULL)
6078881a
TH		 4705 return (0);
4706
4707 free(tmp);
4708 return (1);
4709}
4710
dbb38f66
YP		 4711/*
4712 * By "whole disk" we mean an entire physical disk (something we can
4713 * label, toggle the write cache on, etc.) as opposed to the full
4714 * capacity of a pseudo-device such as lofi or did. We act as if we
4715 * are labeling the disk, which should be a pretty good test of whether
4716 * it's a viable device or not. Returns B_TRUE if it is and B_FALSE if
4717 * it isn't.
4718 */
4719int
4720zfs_dev_is_whole_disk(char *dev_name)
4721{
4722 struct dk_gpt *label;
4723 int fd;
4724
4725 if ((fd = open(dev_name, O_RDONLY | O_DIRECT)) < 0)
4726 return (0);
4727
4728 if (efi_alloc_and_init(fd, EFI_NUMPAR, &label) != 0) {
4729 (void) close(fd);
4730 return (0);
4731 }
4732
4733 efi_free(label);
4734 (void) close(fd);
4735
4736 return (1);
4737}
4738
6078881a
TH		 4739/*
4740 * Lookup the underlying device for a device name
4741 *
4742 * Often you'll have a symlink to a device, a partition device,
4743 * or a multipath device, and want to look up the underlying device.
4744 * This function returns the underlying device name. If the device
4745 * name is already the underlying device, then just return the same
4746 * name. If the device is a DM device with multiple underlying devices
4747 * then return the first one.
4748 *
4749 * For example:
4750 *
4751 * 1. /dev/disk/by-id/ata-QEMU_HARDDISK_QM00001 -> ../../sda
4752 * dev_name: /dev/disk/by-id/ata-QEMU_HARDDISK_QM00001
4753 * returns: /dev/sda
4754 *
4755 * 2. /dev/mapper/mpatha (made up of /dev/sda and /dev/sdb)
4756 * dev_name: /dev/mapper/mpatha
4757 * returns: /dev/sda (first device)
4758 *
4759 * 3. /dev/sda (already the underlying device)
4760 * dev_name: /dev/sda
4761 * returns: /dev/sda
4762 *
4763 * 4. /dev/dm-3 (mapped to /dev/sda)
4764 * dev_name: /dev/dm-3
4765 * returns: /dev/sda
4766 *
4767 * 5. /dev/disk/by-id/scsi-0QEMU_drive-scsi0-0-0-0-part9 -> ../../sdb9
4768 * dev_name: /dev/disk/by-id/scsi-0QEMU_drive-scsi0-0-0-0-part9
4769 * returns: /dev/sdb
4770 *
4771 * 6. /dev/disk/by-uuid/5df030cf-3cd9-46e4-8e99-3ccb462a4e9a -> ../dev/sda2
4772 * dev_name: /dev/disk/by-uuid/5df030cf-3cd9-46e4-8e99-3ccb462a4e9a
4773 * returns: /dev/sda
4774 *
4775 * Returns underlying device name, or NULL on error or no match.
4776 *
4777 * NOTE: The returned name string must be *freed*.
4778 */
4779char *
1bbd8770 4780zfs_get_underlying_path(char *dev_name)
6078881a
TH		 4781{
4782 char *name = NULL;
4783 char *tmp;
4784
8720e9e7 4785 if (dev_name == NULL)
6078881a
TH		 4786 return (NULL);
4787
4788 tmp = dm_get_underlying_path(dev_name);
4789
4790 /* dev_name not a DM device, so just un-symlinkize it */
8720e9e7 4791 if (tmp == NULL)
6078881a
TH		 4792 tmp = realpath(dev_name, NULL);
4793
8720e9e7
TH		 4794 if (tmp != NULL) {
4795 name = zfs_strip_partition_path(tmp);
6078881a
TH		 4796 free(tmp);
4797 }
4798
4799 return (name);
4800}
1bbd8770
TH		 4801
4802/*
4803 * Given a dev name like "sda", return the full enclosure sysfs path to
4804 * the disk. You can also pass in the name with "/dev" prepended
4805 * to it (like /dev/sda).
4806 *
4807 * For example, disk "sda" in enclosure slot 1:
4808 * dev: "sda"
4809 * returns: "/sys/class/enclosure/1:0:3:0/Slot 1"
4810 *
4811 * 'dev' must be a non-devicemapper device.
4812 *
4813 * Returned string must be freed.
4814 */
4815char *
4816zfs_get_enclosure_sysfs_path(char *dev_name)
4817{
4818 DIR *dp = NULL;
4819 struct dirent *ep;
4820 char buf[MAXPATHLEN];
4821 char *tmp1 = NULL;
4822 char *tmp2 = NULL;
4823 char *tmp3 = NULL;
4824 char *path = NULL;
4825 size_t size;
4826 int tmpsize;
4827
8720e9e7 4828 if (dev_name == NULL)
1bbd8770
TH		 4829 return (NULL);
4830
4831 /* If they preface 'dev' with a path (like "/dev") then strip it off */
4832 tmp1 = strrchr(dev_name, '/');
8720e9e7 4833 if (tmp1 != NULL)
1bbd8770
TH		 4834 dev_name = tmp1 + 1; /* +1 since we want the chr after '/' */
4835
4836 tmpsize = asprintf(&tmp1, "/sys/block/%s/device", dev_name);
4837 if (tmpsize == -1 || tmp1 == NULL) {
4838 tmp1 = NULL;
4839 goto end;
4840 }
4841
4842 dp = opendir(tmp1);
4843 if (dp == NULL) {
4844 tmp1 = NULL; /* To make free() at the end a NOP */
4845 goto end;
4846 }
4847
4848 /*
4849 * Look though all sysfs entries in /sys/block/<dev>/device for
4850 * the enclosure symlink.
4851 */
4852 while ((ep = readdir(dp))) {
4853 /* Ignore everything that's not our enclosure_device link */
8720e9e7 4854 if (strstr(ep->d_name, "enclosure_device") == NULL)
1bbd8770
TH		 4855 continue;
4856
4857 if (asprintf(&tmp2, "%s/%s", tmp1, ep->d_name) == -1 ||
4858 tmp2 == NULL)
4859 break;
4860
4861 size = readlink(tmp2, buf, sizeof (buf));
4862
4863 /* Did readlink fail or crop the link name? */
4864 if (size == -1 || size >= sizeof (buf)) {
4865 free(tmp2);
4866 tmp2 = NULL; /* To make free() at the end a NOP */
4867 break;
4868 }
4869
4870 /*
4871 * We got a valid link. readlink() doesn't terminate strings
4872 * so we have to do it.
4873 */
4874 buf[size] = '\0';
4875
4876 /*
4877 * Our link will look like:
4878 *
4879 * "../../../../port-11:1:2/..STUFF../enclosure/1:0:3:0/SLOT 1"
4880 *
4881 * We want to grab the "enclosure/1:0:3:0/SLOT 1" part
4882 */
4883 tmp3 = strstr(buf, "enclosure");
4884 if (tmp3 == NULL)
4885 break;
4886
4887 if (asprintf(&path, "/sys/class/%s", tmp3) == -1) {
4888 /* If asprintf() fails, 'path' is undefined */
4889 path = NULL;
4890 break;
4891 }
4892
4893 if (path == NULL)
4894 break;
4895 }
4896
4897end:
4898 free(tmp2);
4899 free(tmp1);
4900
8720e9e7 4901 if (dp != NULL)
1bbd8770
TH		 4902 closedir(dp);
4903
4904 return (path);
4905}
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