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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/*
428870ff 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
34dc7c2f
BB		 24 */
25
34dc7c2f
BB		 26#include <ctype.h>
27#include <errno.h>
28#include <devid.h>
34dc7c2f
BB		 29#include <fcntl.h>
30#include <libintl.h>
31#include <stdio.h>
32#include <stdlib.h>
33#include <strings.h>
34#include <unistd.h>
35#include <sys/efi_partition.h>
36#include <sys/vtoc.h>
37#include <sys/zfs_ioctl.h>
9babb374 38#include <dlfcn.h>
34dc7c2f
BB		 39
40#include "zfs_namecheck.h"
41#include "zfs_prop.h"
42#include "libzfs_impl.h"
428870ff 43#include "zfs_comutil.h"
34dc7c2f 44
b128c09f
BB		 45static int read_efi_label(nvlist_t *config, diskaddr_t *sb);
46
9babb374
BB		 47#define DISK_ROOT "/dev/dsk"
48#define RDISK_ROOT "/dev/rdsk"
49#define BACKUP_SLICE "s2"
50
572e2857
BB		 51typedef struct prop_flags {
52 int create:1; /* Validate property on creation */
53 int import:1; /* Validate property on import */
54} prop_flags_t;
55
34dc7c2f
BB		 56/*
57 * ====================================================================
58 * zpool property functions
59 * ====================================================================
60 */
61
62static int
63zpool_get_all_props(zpool_handle_t *zhp)
64{
65 zfs_cmd_t zc = { 0 };
66 libzfs_handle_t *hdl = zhp->zpool_hdl;
67
68 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
69
70 if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
71 return (-1);
72
73 while (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_PROPS, &zc) != 0) {
74 if (errno == ENOMEM) {
75 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
76 zcmd_free_nvlists(&zc);
77 return (-1);
78 }
79 } else {
80 zcmd_free_nvlists(&zc);
81 return (-1);
82 }
83 }
84
85 if (zcmd_read_dst_nvlist(hdl, &zc, &zhp->zpool_props) != 0) {
86 zcmd_free_nvlists(&zc);
87 return (-1);
88 }
89
90 zcmd_free_nvlists(&zc);
91
92 return (0);
93}
94
95static int
96zpool_props_refresh(zpool_handle_t *zhp)
97{
98 nvlist_t *old_props;
99
100 old_props = zhp->zpool_props;
101
102 if (zpool_get_all_props(zhp) != 0)
103 return (-1);
104
105 nvlist_free(old_props);
106 return (0);
107}
108
109static char *
110zpool_get_prop_string(zpool_handle_t *zhp, zpool_prop_t prop,
111 zprop_source_t *src)
112{
113 nvlist_t *nv, *nvl;
114 uint64_t ival;
115 char *value;
116 zprop_source_t source;
117
118 nvl = zhp->zpool_props;
119 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) {
120 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &ival) == 0);
121 source = ival;
122 verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0);
123 } else {
124 source = ZPROP_SRC_DEFAULT;
125 if ((value = (char *)zpool_prop_default_string(prop)) == NULL)
126 value = "-";
127 }
128
129 if (src)
130 *src = source;
131
132 return (value);
133}
134
135uint64_t
136zpool_get_prop_int(zpool_handle_t *zhp, zpool_prop_t prop, zprop_source_t *src)
137{
138 nvlist_t *nv, *nvl;
139 uint64_t value;
140 zprop_source_t source;
141
b128c09f
BB		 142 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp)) {
143 /*
144 * zpool_get_all_props() has most likely failed because
145 * the pool is faulted, but if all we need is the top level
146 * vdev's guid then get it from the zhp config nvlist.
147 */
148 if ((prop == ZPOOL_PROP_GUID) &&
149 (nvlist_lookup_nvlist(zhp->zpool_config,
150 ZPOOL_CONFIG_VDEV_TREE, &nv) == 0) &&
151 (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &value)
152 == 0)) {
153 return (value);
154 }
34dc7c2f 155 return (zpool_prop_default_numeric(prop));
b128c09f 156 }
34dc7c2f
BB		 157
158 nvl = zhp->zpool_props;
159 if (nvlist_lookup_nvlist(nvl, zpool_prop_to_name(prop), &nv) == 0) {
160 verify(nvlist_lookup_uint64(nv, ZPROP_SOURCE, &value) == 0);
161 source = value;
162 verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0);
163 } else {
164 source = ZPROP_SRC_DEFAULT;
165 value = zpool_prop_default_numeric(prop);
166 }
167
168 if (src)
169 *src = source;
170
171 return (value);
172}
173
174/*
175 * Map VDEV STATE to printed strings.
176 */
177char *
178zpool_state_to_name(vdev_state_t state, vdev_aux_t aux)
179{
180 switch (state) {
181 case VDEV_STATE_CLOSED:
182 case VDEV_STATE_OFFLINE:
183 return (gettext("OFFLINE"));
184 case VDEV_STATE_REMOVED:
185 return (gettext("REMOVED"));
186 case VDEV_STATE_CANT_OPEN:
b128c09f 187 if (aux == VDEV_AUX_CORRUPT_DATA || aux == VDEV_AUX_BAD_LOG)
34dc7c2f 188 return (gettext("FAULTED"));
428870ff
BB		 189 else if (aux == VDEV_AUX_SPLIT_POOL)
190 return (gettext("SPLIT"));
34dc7c2f
BB		 191 else
192 return (gettext("UNAVAIL"));
193 case VDEV_STATE_FAULTED:
194 return (gettext("FAULTED"));
195 case VDEV_STATE_DEGRADED:
196 return (gettext("DEGRADED"));
197 case VDEV_STATE_HEALTHY:
198 return (gettext("ONLINE"));
199 }
200
201 return (gettext("UNKNOWN"));
202}
203
204/*
205 * Get a zpool property value for 'prop' and return the value in
206 * a pre-allocated buffer.
207 */
208int
209zpool_get_prop(zpool_handle_t *zhp, zpool_prop_t prop, char *buf, size_t len,
210 zprop_source_t *srctype)
211{
212 uint64_t intval;
213 const char *strval;
214 zprop_source_t src = ZPROP_SRC_NONE;
215 nvlist_t *nvroot;
216 vdev_stat_t *vs;
217 uint_t vsc;
218
219 if (zpool_get_state(zhp) == POOL_STATE_UNAVAIL) {
d164b209
BB		 220 switch (prop) {
221 case ZPOOL_PROP_NAME:
34dc7c2f 222 (void) strlcpy(buf, zpool_get_name(zhp), len);
d164b209
BB		 223 break;
224
225 case ZPOOL_PROP_HEALTH:
34dc7c2f 226 (void) strlcpy(buf, "FAULTED", len);
d164b209
BB		 227 break;
228
229 case ZPOOL_PROP_GUID:
230 intval = zpool_get_prop_int(zhp, prop, &src);
231 (void) snprintf(buf, len, "%llu", intval);
232 break;
233
234 case ZPOOL_PROP_ALTROOT:
235 case ZPOOL_PROP_CACHEFILE:
236 if (zhp->zpool_props != NULL ||
237 zpool_get_all_props(zhp) == 0) {
238 (void) strlcpy(buf,
239 zpool_get_prop_string(zhp, prop, &src),
240 len);
241 if (srctype != NULL)
242 *srctype = src;
243 return (0);
244 }
245 /* FALLTHROUGH */
246 default:
34dc7c2f 247 (void) strlcpy(buf, "-", len);
d164b209
BB		 248 break;
249 }
250
251 if (srctype != NULL)
252 *srctype = src;
34dc7c2f
BB		 253 return (0);
254 }
255
256 if (zhp->zpool_props == NULL && zpool_get_all_props(zhp) &&
257 prop != ZPOOL_PROP_NAME)
258 return (-1);
259
260 switch (zpool_prop_get_type(prop)) {
261 case PROP_TYPE_STRING:
262 (void) strlcpy(buf, zpool_get_prop_string(zhp, prop, &src),
263 len);
264 break;
265
266 case PROP_TYPE_NUMBER:
267 intval = zpool_get_prop_int(zhp, prop, &src);
268
269 switch (prop) {
270 case ZPOOL_PROP_SIZE:
428870ff
BB		 271 case ZPOOL_PROP_ALLOCATED:
272 case ZPOOL_PROP_FREE:
34dc7c2f
BB		 273 (void) zfs_nicenum(intval, buf, len);
274 break;
275
276 case ZPOOL_PROP_CAPACITY:
277 (void) snprintf(buf, len, "%llu%%",
278 (u_longlong_t)intval);
279 break;
280
428870ff
BB		 281 case ZPOOL_PROP_DEDUPRATIO:
282 (void) snprintf(buf, len, "%llu.%02llux",
283 (u_longlong_t)(intval / 100),
284 (u_longlong_t)(intval % 100));
285 break;
286
34dc7c2f
BB		 287 case ZPOOL_PROP_HEALTH:
288 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
289 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
290 verify(nvlist_lookup_uint64_array(nvroot,
428870ff
BB		 291 ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &vsc)
292 == 0);
34dc7c2f
BB		 293
294 (void) strlcpy(buf, zpool_state_to_name(intval,
295 vs->vs_aux), len);
296 break;
297 default:
298 (void) snprintf(buf, len, "%llu", intval);
299 }
300 break;
301
302 case PROP_TYPE_INDEX:
303 intval = zpool_get_prop_int(zhp, prop, &src);
304 if (zpool_prop_index_to_string(prop, intval, &strval)
305 != 0)
306 return (-1);
307 (void) strlcpy(buf, strval, len);
308 break;
309
310 default:
311 abort();
312 }
313
314 if (srctype)
315 *srctype = src;
316
317 return (0);
318}
319
320/*
321 * Check if the bootfs name has the same pool name as it is set to.
322 * Assuming bootfs is a valid dataset name.
323 */
324static boolean_t
325bootfs_name_valid(const char *pool, char *bootfs)
326{
327 int len = strlen(pool);
328
b128c09f 329 if (!zfs_name_valid(bootfs, ZFS_TYPE_FILESYSTEM|ZFS_TYPE_SNAPSHOT))
34dc7c2f
BB		 330 return (B_FALSE);
331
332 if (strncmp(pool, bootfs, len) == 0 &&
333 (bootfs[len] == '/' || bootfs[len] == '\0'))
334 return (B_TRUE);
335
336 return (B_FALSE);
337}
338
b128c09f
BB		 339/*
340 * Inspect the configuration to determine if any of the devices contain
341 * an EFI label.
342 */
343static boolean_t
344pool_uses_efi(nvlist_t *config)
345{
346 nvlist_t **child;
347 uint_t c, children;
348
349 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN,
350 &child, &children) != 0)
351 return (read_efi_label(config, NULL) >= 0);
352
353 for (c = 0; c < children; c++) {
354 if (pool_uses_efi(child[c]))
355 return (B_TRUE);
356 }
357 return (B_FALSE);
358}
359
360static boolean_t
361pool_is_bootable(zpool_handle_t *zhp)
362{
363 char bootfs[ZPOOL_MAXNAMELEN];
364
365 return (zpool_get_prop(zhp, ZPOOL_PROP_BOOTFS, bootfs,
366 sizeof (bootfs), NULL) == 0 && strncmp(bootfs, "-",
367 sizeof (bootfs)) != 0);
368}
369
370
34dc7c2f
BB		 371/*
372 * Given an nvlist of zpool properties to be set, validate that they are
373 * correct, and parse any numeric properties (index, boolean, etc) if they are
374 * specified as strings.
375 */
376static nvlist_t *
b128c09f 377zpool_valid_proplist(libzfs_handle_t *hdl, const char *poolname,
572e2857 378 nvlist_t *props, uint64_t version, prop_flags_t flags, char *errbuf)
34dc7c2f
BB		 379{
380 nvpair_t *elem;
381 nvlist_t *retprops;
382 zpool_prop_t prop;
383 char *strval;
384 uint64_t intval;
385 char *slash;
386 struct stat64 statbuf;
b128c09f
BB		 387 zpool_handle_t *zhp;
388 nvlist_t *nvroot;
34dc7c2f
BB		 389
390 if (nvlist_alloc(&retprops, NV_UNIQUE_NAME, 0) != 0) {
391 (void) no_memory(hdl);
392 return (NULL);
393 }
394
395 elem = NULL;
396 while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
397 const char *propname = nvpair_name(elem);
398
399 /*
400 * Make sure this property is valid and applies to this type.
401 */
402 if ((prop = zpool_name_to_prop(propname)) == ZPROP_INVAL) {
403 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
404 "invalid property '%s'"), propname);
405 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
406 goto error;
407 }
408
409 if (zpool_prop_readonly(prop)) {
410 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' "
411 "is readonly"), propname);
412 (void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf);
413 goto error;
414 }
415
416 if (zprop_parse_value(hdl, elem, prop, ZFS_TYPE_POOL, retprops,
417 &strval, &intval, errbuf) != 0)
418 goto error;
419
420 /*
421 * Perform additional checking for specific properties.
422 */
423 switch (prop) {
424 case ZPOOL_PROP_VERSION:
425 if (intval < version || intval > SPA_VERSION) {
426 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
427 "property '%s' number %d is invalid."),
428 propname, intval);
429 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
430 goto error;
431 }
432 break;
433
434 case ZPOOL_PROP_BOOTFS:
572e2857 435 if (flags.create || flags.import) {
34dc7c2f
BB		 436 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
437 "property '%s' cannot be set at creation "
438 "or import time"), propname);
439 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
440 goto error;
441 }
442
443 if (version < SPA_VERSION_BOOTFS) {
444 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
445 "pool must be upgraded to support "
446 "'%s' property"), propname);
447 (void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
448 goto error;
449 }
450
451 /*
452 * bootfs property value has to be a dataset name and
453 * the dataset has to be in the same pool as it sets to.
454 */
455 if (strval[0] != '\0' && !bootfs_name_valid(poolname,
456 strval)) {
457 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' "
458 "is an invalid name"), strval);
459 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
460 goto error;
461 }
b128c09f
BB		 462
463 if ((zhp = zpool_open_canfail(hdl, poolname)) == NULL) {
464 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
465 "could not open pool '%s'"), poolname);
466 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf);
467 goto error;
468 }
469 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
470 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
471
472 /*
473 * bootfs property cannot be set on a disk which has
474 * been EFI labeled.
475 */
476 if (pool_uses_efi(nvroot)) {
477 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
478 "property '%s' not supported on "
479 "EFI labeled devices"), propname);
480 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, errbuf);
481 zpool_close(zhp);
482 goto error;
483 }
484 zpool_close(zhp);
34dc7c2f
BB		 485 break;
486
487 case ZPOOL_PROP_ALTROOT:
572e2857 488 if (!flags.create && !flags.import) {
34dc7c2f
BB		 489 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
490 "property '%s' can only be set during pool "
491 "creation or import"), propname);
492 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
493 goto error;
494 }
495
496 if (strval[0] != '/') {
497 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
498 "bad alternate root '%s'"), strval);
499 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
500 goto error;
501 }
502 break;
503
504 case ZPOOL_PROP_CACHEFILE:
505 if (strval[0] == '\0')
506 break;
507
508 if (strcmp(strval, "none") == 0)
509 break;
510
511 if (strval[0] != '/') {
512 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
513 "property '%s' must be empty, an "
514 "absolute path, or 'none'"), propname);
515 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
516 goto error;
517 }
518
519 slash = strrchr(strval, '/');
520
521 if (slash[1] == '\0' || strcmp(slash, "/.") == 0 ||
522 strcmp(slash, "/..") == 0) {
523 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
524 "'%s' is not a valid file"), strval);
525 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
526 goto error;
527 }
528
529 *slash = '\0';
530
531 if (strval[0] != '\0' &&
532 (stat64(strval, &statbuf) != 0 ||
533 !S_ISDIR(statbuf.st_mode))) {
534 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
535 "'%s' is not a valid directory"),
536 strval);
537 (void) zfs_error(hdl, EZFS_BADPATH, errbuf);
538 goto error;
539 }
540
541 *slash = '/';
542 break;
572e2857
BB		 543
544 case ZPOOL_PROP_READONLY:
545 if (!flags.import) {
546 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
547 "property '%s' can only be set at "
548 "import time"), propname);
549 (void) zfs_error(hdl, EZFS_BADPROP, errbuf);
550 goto error;
551 }
552 break;
34dc7c2f
BB		 553 }
554 }
555
556 return (retprops);
557error:
558 nvlist_free(retprops);
559 return (NULL);
560}
561
562/*
563 * Set zpool property : propname=propval.
564 */
565int
566zpool_set_prop(zpool_handle_t *zhp, const char *propname, const char *propval)
567{
568 zfs_cmd_t zc = { 0 };
569 int ret = -1;
570 char errbuf[1024];
571 nvlist_t *nvl = NULL;
572 nvlist_t *realprops;
573 uint64_t version;
572e2857 574 prop_flags_t flags = { 0 };
34dc7c2f
BB		 575
576 (void) snprintf(errbuf, sizeof (errbuf),
577 dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
578 zhp->zpool_name);
579
34dc7c2f
BB		 580 if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
581 return (no_memory(zhp->zpool_hdl));
582
583 if (nvlist_add_string(nvl, propname, propval) != 0) {
584 nvlist_free(nvl);
585 return (no_memory(zhp->zpool_hdl));
586 }
587
588 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
b128c09f 589 if ((realprops = zpool_valid_proplist(zhp->zpool_hdl,
572e2857 590 zhp->zpool_name, nvl, version, flags, errbuf)) == NULL) {
34dc7c2f
BB		 591 nvlist_free(nvl);
592 return (-1);
593 }
594
595 nvlist_free(nvl);
596 nvl = realprops;
597
598 /*
599 * Execute the corresponding ioctl() to set this property.
600 */
601 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
602
603 if (zcmd_write_src_nvlist(zhp->zpool_hdl, &zc, nvl) != 0) {
604 nvlist_free(nvl);
605 return (-1);
606 }
607
608 ret = zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_SET_PROPS, &zc);
609
610 zcmd_free_nvlists(&zc);
611 nvlist_free(nvl);
612
613 if (ret)
614 (void) zpool_standard_error(zhp->zpool_hdl, errno, errbuf);
615 else
616 (void) zpool_props_refresh(zhp);
617
618 return (ret);
619}
620
621int
622zpool_expand_proplist(zpool_handle_t *zhp, zprop_list_t **plp)
623{
624 libzfs_handle_t *hdl = zhp->zpool_hdl;
625 zprop_list_t *entry;
626 char buf[ZFS_MAXPROPLEN];
627
628 if (zprop_expand_list(hdl, plp, ZFS_TYPE_POOL) != 0)
629 return (-1);
630
631 for (entry = *plp; entry != NULL; entry = entry->pl_next) {
632
633 if (entry->pl_fixed)
634 continue;
635
636 if (entry->pl_prop != ZPROP_INVAL &&
637 zpool_get_prop(zhp, entry->pl_prop, buf, sizeof (buf),
638 NULL) == 0) {
639 if (strlen(buf) > entry->pl_width)
640 entry->pl_width = strlen(buf);
641 }
642 }
643
644 return (0);
645}
646
647
9babb374
BB		 648/*
649 * Don't start the slice at the default block of 34; many storage
650 * devices will use a stripe width of 128k, so start there instead.
651 */
652#define NEW_START_BLOCK 256
653
34dc7c2f
BB		 654/*
655 * Validate the given pool name, optionally putting an extended error message in
656 * 'buf'.
657 */
658boolean_t
659zpool_name_valid(libzfs_handle_t *hdl, boolean_t isopen, const char *pool)
660{
661 namecheck_err_t why;
662 char what;
663 int ret;
664
665 ret = pool_namecheck(pool, &why, &what);
666
667 /*
668 * The rules for reserved pool names were extended at a later point.
669 * But we need to support users with existing pools that may now be
670 * invalid. So we only check for this expanded set of names during a
671 * create (or import), and only in userland.
672 */
673 if (ret == 0 && !isopen &&
674 (strncmp(pool, "mirror", 6) == 0 ||
675 strncmp(pool, "raidz", 5) == 0 ||
676 strncmp(pool, "spare", 5) == 0 ||
677 strcmp(pool, "log") == 0)) {
678 if (hdl != NULL)
679 zfs_error_aux(hdl,
680 dgettext(TEXT_DOMAIN, "name is reserved"));
681 return (B_FALSE);
682 }
683
684
685 if (ret != 0) {
686 if (hdl != NULL) {
687 switch (why) {
688 case NAME_ERR_TOOLONG:
689 zfs_error_aux(hdl,
690 dgettext(TEXT_DOMAIN, "name is too long"));
691 break;
692
693 case NAME_ERR_INVALCHAR:
694 zfs_error_aux(hdl,
695 dgettext(TEXT_DOMAIN, "invalid character "
696 "'%c' in pool name"), what);
697 break;
698
699 case NAME_ERR_NOLETTER:
700 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
701 "name must begin with a letter"));
702 break;
703
704 case NAME_ERR_RESERVED:
705 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
706 "name is reserved"));
707 break;
708
709 case NAME_ERR_DISKLIKE:
710 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
711 "pool name is reserved"));
712 break;
713
714 case NAME_ERR_LEADING_SLASH:
715 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
716 "leading slash in name"));
717 break;
718
719 case NAME_ERR_EMPTY_COMPONENT:
720 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
721 "empty component in name"));
722 break;
723
724 case NAME_ERR_TRAILING_SLASH:
725 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
726 "trailing slash in name"));
727 break;
728
729 case NAME_ERR_MULTIPLE_AT:
730 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
731 "multiple '@' delimiters in name"));
732 break;
733
734 }
735 }
736 return (B_FALSE);
737 }
738
739 return (B_TRUE);
740}
741
742/*
743 * Open a handle to the given pool, even if the pool is currently in the FAULTED
744 * state.
745 */
746zpool_handle_t *
747zpool_open_canfail(libzfs_handle_t *hdl, const char *pool)
748{
749 zpool_handle_t *zhp;
750 boolean_t missing;
751
752 /*
753 * Make sure the pool name is valid.
754 */
755 if (!zpool_name_valid(hdl, B_TRUE, pool)) {
756 (void) zfs_error_fmt(hdl, EZFS_INVALIDNAME,
757 dgettext(TEXT_DOMAIN, "cannot open '%s'"),
758 pool);
759 return (NULL);
760 }
761
762 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL)
763 return (NULL);
764
765 zhp->zpool_hdl = hdl;
766 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name));
767
768 if (zpool_refresh_stats(zhp, &missing) != 0) {
769 zpool_close(zhp);
770 return (NULL);
771 }
772
773 if (missing) {
774 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no such pool"));
775 (void) zfs_error_fmt(hdl, EZFS_NOENT,
776 dgettext(TEXT_DOMAIN, "cannot open '%s'"), pool);
777 zpool_close(zhp);
778 return (NULL);
779 }
780
781 return (zhp);
782}
783
784/*
785 * Like the above, but silent on error. Used when iterating over pools (because
786 * the configuration cache may be out of date).
787 */
788int
789zpool_open_silent(libzfs_handle_t *hdl, const char *pool, zpool_handle_t **ret)
790{
791 zpool_handle_t *zhp;
792 boolean_t missing;
793
794 if ((zhp = zfs_alloc(hdl, sizeof (zpool_handle_t))) == NULL)
795 return (-1);
796
797 zhp->zpool_hdl = hdl;
798 (void) strlcpy(zhp->zpool_name, pool, sizeof (zhp->zpool_name));
799
800 if (zpool_refresh_stats(zhp, &missing) != 0) {
801 zpool_close(zhp);
802 return (-1);
803 }
804
805 if (missing) {
806 zpool_close(zhp);
807 *ret = NULL;
808 return (0);
809 }
810
811 *ret = zhp;
812 return (0);
813}
814
815/*
816 * Similar to zpool_open_canfail(), but refuses to open pools in the faulted
817 * state.
818 */
819zpool_handle_t *
820zpool_open(libzfs_handle_t *hdl, const char *pool)
821{
822 zpool_handle_t *zhp;
823
824 if ((zhp = zpool_open_canfail(hdl, pool)) == NULL)
825 return (NULL);
826
827 if (zhp->zpool_state == POOL_STATE_UNAVAIL) {
828 (void) zfs_error_fmt(hdl, EZFS_POOLUNAVAIL,
829 dgettext(TEXT_DOMAIN, "cannot open '%s'"), zhp->zpool_name);
830 zpool_close(zhp);
831 return (NULL);
832 }
833
834 return (zhp);
835}
836
837/*
838 * Close the handle. Simply frees the memory associated with the handle.
839 */
840void
841zpool_close(zpool_handle_t *zhp)
842{
843 if (zhp->zpool_config)
844 nvlist_free(zhp->zpool_config);
845 if (zhp->zpool_old_config)
846 nvlist_free(zhp->zpool_old_config);
847 if (zhp->zpool_props)
848 nvlist_free(zhp->zpool_props);
849 free(zhp);
850}
851
852/*
853 * Return the name of the pool.
854 */
855const char *
856zpool_get_name(zpool_handle_t *zhp)
857{
858 return (zhp->zpool_name);
859}
860
861
862/*
863 * Return the state of the pool (ACTIVE or UNAVAILABLE)
864 */
865int
866zpool_get_state(zpool_handle_t *zhp)
867{
868 return (zhp->zpool_state);
869}
870
871/*
872 * Create the named pool, using the provided vdev list. It is assumed
873 * that the consumer has already validated the contents of the nvlist, so we
874 * don't have to worry about error semantics.
875 */
876int
877zpool_create(libzfs_handle_t *hdl, const char *pool, nvlist_t *nvroot,
b128c09f 878 nvlist_t *props, nvlist_t *fsprops)
34dc7c2f
BB		 879{
880 zfs_cmd_t zc = { 0 };
b128c09f
BB		 881 nvlist_t *zc_fsprops = NULL;
882 nvlist_t *zc_props = NULL;
34dc7c2f
BB		 883 char msg[1024];
884 char *altroot;
b128c09f 885 int ret = -1;
34dc7c2f
BB		 886
887 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
888 "cannot create '%s'"), pool);
889
890 if (!zpool_name_valid(hdl, B_FALSE, pool))
891 return (zfs_error(hdl, EZFS_INVALIDNAME, msg));
892
893 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
894 return (-1);
895
b128c09f 896 if (props) {
572e2857
BB		 897 prop_flags_t flags = { .create = B_TRUE, .import = B_FALSE };
898
b128c09f 899 if ((zc_props = zpool_valid_proplist(hdl, pool, props,
572e2857 900 SPA_VERSION_1, flags, msg)) == NULL) {
b128c09f
BB		 901 goto create_failed;
902 }
903 }
34dc7c2f 904
b128c09f
BB		 905 if (fsprops) {
906 uint64_t zoned;
907 char *zonestr;
908
909 zoned = ((nvlist_lookup_string(fsprops,
910 zfs_prop_to_name(ZFS_PROP_ZONED), &zonestr) == 0) &&
911 strcmp(zonestr, "on") == 0);
912
913 if ((zc_fsprops = zfs_valid_proplist(hdl,
914 ZFS_TYPE_FILESYSTEM, fsprops, zoned, NULL, msg)) == NULL) {
915 goto create_failed;
916 }
917 if (!zc_props &&
918 (nvlist_alloc(&zc_props, NV_UNIQUE_NAME, 0) != 0)) {
919 goto create_failed;
920 }
921 if (nvlist_add_nvlist(zc_props,
922 ZPOOL_ROOTFS_PROPS, zc_fsprops) != 0) {
923 goto create_failed;
924 }
34dc7c2f
BB		 925 }
926
b128c09f
BB		 927 if (zc_props && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0)
928 goto create_failed;
929
34dc7c2f
BB		 930 (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name));
931
b128c09f 932 if ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_CREATE, &zc)) != 0) {
34dc7c2f
BB		 933
934 zcmd_free_nvlists(&zc);
b128c09f
BB		 935 nvlist_free(zc_props);
936 nvlist_free(zc_fsprops);
34dc7c2f
BB		 937
938 switch (errno) {
939 case EBUSY:
940 /*
941 * This can happen if the user has specified the same
942 * device multiple times. We can't reliably detect this
943 * until we try to add it and see we already have a
944 * label.
945 */
946 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
947 "one or more vdevs refer to the same device"));
948 return (zfs_error(hdl, EZFS_BADDEV, msg));
949
950 case EOVERFLOW:
951 /*
952 * This occurs when one of the devices is below
953 * SPA_MINDEVSIZE. Unfortunately, we can't detect which
954 * device was the problem device since there's no
955 * reliable way to determine device size from userland.
956 */
957 {
958 char buf[64];
959
960 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf));
961
962 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
963 "one or more devices is less than the "
964 "minimum size (%s)"), buf);
965 }
966 return (zfs_error(hdl, EZFS_BADDEV, msg));
967
968 case ENOSPC:
969 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
970 "one or more devices is out of space"));
971 return (zfs_error(hdl, EZFS_BADDEV, msg));
972
973 case ENOTBLK:
974 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
975 "cache device must be a disk or disk slice"));
976 return (zfs_error(hdl, EZFS_BADDEV, msg));
977
978 default:
979 return (zpool_standard_error(hdl, errno, msg));
980 }
981 }
982
983 /*
984 * If this is an alternate root pool, then we automatically set the
985 * mountpoint of the root dataset to be '/'.
986 */
987 if (nvlist_lookup_string(props, zpool_prop_to_name(ZPOOL_PROP_ALTROOT),
988 &altroot) == 0) {
989 zfs_handle_t *zhp;
990
991 verify((zhp = zfs_open(hdl, pool, ZFS_TYPE_DATASET)) != NULL);
992 verify(zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
993 "/") == 0);
994
995 zfs_close(zhp);
996 }
997
b128c09f 998create_failed:
34dc7c2f 999 zcmd_free_nvlists(&zc);
b128c09f
BB		 1000 nvlist_free(zc_props);
1001 nvlist_free(zc_fsprops);
1002 return (ret);
34dc7c2f
BB		 1003}
1004
1005/*
1006 * Destroy the given pool. It is up to the caller to ensure that there are no
1007 * datasets left in the pool.
1008 */
1009int
1010zpool_destroy(zpool_handle_t *zhp)
1011{
1012 zfs_cmd_t zc = { 0 };
1013 zfs_handle_t *zfp = NULL;
1014 libzfs_handle_t *hdl = zhp->zpool_hdl;
1015 char msg[1024];
1016
1017 if (zhp->zpool_state == POOL_STATE_ACTIVE &&
572e2857 1018 (zfp = zfs_open(hdl, zhp->zpool_name, ZFS_TYPE_FILESYSTEM)) == NULL)
34dc7c2f
BB		 1019 return (-1);
1020
34dc7c2f
BB		 1021 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
1022
572e2857 1023 if (zfs_ioctl(hdl, ZFS_IOC_POOL_DESTROY, &zc) != 0) {
34dc7c2f
BB		 1024 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1025 "cannot destroy '%s'"), zhp->zpool_name);
1026
1027 if (errno == EROFS) {
1028 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1029 "one or more devices is read only"));
1030 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1031 } else {
1032 (void) zpool_standard_error(hdl, errno, msg);
1033 }
1034
1035 if (zfp)
1036 zfs_close(zfp);
1037 return (-1);
1038 }
1039
1040 if (zfp) {
1041 remove_mountpoint(zfp);
1042 zfs_close(zfp);
1043 }
1044
1045 return (0);
1046}
1047
1048/*
1049 * Add the given vdevs to the pool. The caller must have already performed the
1050 * necessary verification to ensure that the vdev specification is well-formed.
1051 */
1052int
1053zpool_add(zpool_handle_t *zhp, nvlist_t *nvroot)
1054{
1055 zfs_cmd_t zc = { 0 };
1056 int ret;
1057 libzfs_handle_t *hdl = zhp->zpool_hdl;
1058 char msg[1024];
1059 nvlist_t **spares, **l2cache;
1060 uint_t nspares, nl2cache;
1061
1062 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1063 "cannot add to '%s'"), zhp->zpool_name);
1064
1065 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) <
1066 SPA_VERSION_SPARES &&
1067 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
1068 &spares, &nspares) == 0) {
1069 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be "
1070 "upgraded to add hot spares"));
1071 return (zfs_error(hdl, EZFS_BADVERSION, msg));
1072 }
1073
b128c09f
BB		 1074 if (pool_is_bootable(zhp) && nvlist_lookup_nvlist_array(nvroot,
1075 ZPOOL_CONFIG_SPARES, &spares, &nspares) == 0) {
1076 uint64_t s;
1077
1078 for (s = 0; s < nspares; s++) {
1079 char *path;
1080
1081 if (nvlist_lookup_string(spares[s], ZPOOL_CONFIG_PATH,
1082 &path) == 0 && pool_uses_efi(spares[s])) {
1083 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1084 "device '%s' contains an EFI label and "
1085 "cannot be used on root pools."),
428870ff
BB		 1086 zpool_vdev_name(hdl, NULL, spares[s],
1087 B_FALSE));
b128c09f
BB		 1088 return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg));
1089 }
1090 }
1091 }
1092
34dc7c2f
BB		 1093 if (zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL) <
1094 SPA_VERSION_L2CACHE &&
1095 nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE,
1096 &l2cache, &nl2cache) == 0) {
1097 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool must be "
1098 "upgraded to add cache devices"));
1099 return (zfs_error(hdl, EZFS_BADVERSION, msg));
1100 }
1101
1102 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
1103 return (-1);
1104 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
1105
572e2857 1106 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_ADD, &zc) != 0) {
34dc7c2f
BB		 1107 switch (errno) {
1108 case EBUSY:
1109 /*
1110 * This can happen if the user has specified the same
1111 * device multiple times. We can't reliably detect this
1112 * until we try to add it and see we already have a
1113 * label.
1114 */
1115 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1116 "one or more vdevs refer to the same device"));
1117 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1118 break;
1119
1120 case EOVERFLOW:
1121 /*
1122 * This occurrs when one of the devices is below
1123 * SPA_MINDEVSIZE. Unfortunately, we can't detect which
1124 * device was the problem device since there's no
1125 * reliable way to determine device size from userland.
1126 */
1127 {
1128 char buf[64];
1129
1130 zfs_nicenum(SPA_MINDEVSIZE, buf, sizeof (buf));
1131
1132 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1133 "device is less than the minimum "
1134 "size (%s)"), buf);
1135 }
1136 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1137 break;
1138
1139 case ENOTSUP:
1140 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1141 "pool must be upgraded to add these vdevs"));
1142 (void) zfs_error(hdl, EZFS_BADVERSION, msg);
1143 break;
1144
1145 case EDOM:
1146 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1147 "root pool can not have multiple vdevs"
1148 " or separate logs"));
1149 (void) zfs_error(hdl, EZFS_POOL_NOTSUP, msg);
1150 break;
1151
1152 case ENOTBLK:
1153 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1154 "cache device must be a disk or disk slice"));
1155 (void) zfs_error(hdl, EZFS_BADDEV, msg);
1156 break;
1157
1158 default:
1159 (void) zpool_standard_error(hdl, errno, msg);
1160 }
1161
1162 ret = -1;
1163 } else {
1164 ret = 0;
1165 }
1166
1167 zcmd_free_nvlists(&zc);
1168
1169 return (ret);
1170}
1171
1172/*
1173 * Exports the pool from the system. The caller must ensure that there are no
1174 * mounted datasets in the pool.
1175 */
1176int
fb5f0bc8 1177zpool_export_common(zpool_handle_t *zhp, boolean_t force, boolean_t hardforce)
34dc7c2f
BB		 1178{
1179 zfs_cmd_t zc = { 0 };
b128c09f 1180 char msg[1024];
34dc7c2f 1181
b128c09f
BB		 1182 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
1183 "cannot export '%s'"), zhp->zpool_name);
1184
34dc7c2f 1185 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 1186 zc.zc_cookie = force;
fb5f0bc8 1187 zc.zc_guid = hardforce;
b128c09f
BB		 1188
1189 if (zfs_ioctl(zhp->zpool_hdl, ZFS_IOC_POOL_EXPORT, &zc) != 0) {
1190 switch (errno) {
1191 case EXDEV:
1192 zfs_error_aux(zhp->zpool_hdl, dgettext(TEXT_DOMAIN,
1193 "use '-f' to override the following errors:\n"
1194 "'%s' has an active shared spare which could be"
1195 " used by other pools once '%s' is exported."),
1196 zhp->zpool_name, zhp->zpool_name);
1197 return (zfs_error(zhp->zpool_hdl, EZFS_ACTIVE_SPARE,
1198 msg));
1199 default:
1200 return (zpool_standard_error_fmt(zhp->zpool_hdl, errno,
1201 msg));
1202 }
1203 }
34dc7c2f 1204
34dc7c2f
BB		 1205 return (0);
1206}
1207
fb5f0bc8
BB		 1208int
1209zpool_export(zpool_handle_t *zhp, boolean_t force)
1210{
1211 return (zpool_export_common(zhp, force, B_FALSE));
1212}
1213
1214int
1215zpool_export_force(zpool_handle_t *zhp)
1216{
1217 return (zpool_export_common(zhp, B_TRUE, B_TRUE));
1218}
1219
428870ff
BB		 1220static void
1221zpool_rewind_exclaim(libzfs_handle_t *hdl, const char *name, boolean_t dryrun,
572e2857 1222 nvlist_t *config)
428870ff 1223{
572e2857 1224 nvlist_t *nv = NULL;
428870ff
BB		 1225 uint64_t rewindto;
1226 int64_t loss = -1;
1227 struct tm t;
1228 char timestr[128];
1229
572e2857
BB		 1230 if (!hdl->libzfs_printerr || config == NULL)
1231 return;
1232
1233 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0)
428870ff
BB		 1234 return;
1235
572e2857 1236 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0)
428870ff 1237 return;
572e2857 1238 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss);
428870ff
BB		 1239
1240 if (localtime_r((time_t *)&rewindto, &t) != NULL &&
1241 strftime(timestr, 128, 0, &t) != 0) {
1242 if (dryrun) {
1243 (void) printf(dgettext(TEXT_DOMAIN,
1244 "Would be able to return %s "
1245 "to its state as of %s.\n"),
1246 name, timestr);
1247 } else {
1248 (void) printf(dgettext(TEXT_DOMAIN,
1249 "Pool %s returned to its state as of %s.\n"),
1250 name, timestr);
1251 }
1252 if (loss > 120) {
1253 (void) printf(dgettext(TEXT_DOMAIN,
1254 "%s approximately %lld "),
1255 dryrun ? "Would discard" : "Discarded",
1256 (loss + 30) / 60);
1257 (void) printf(dgettext(TEXT_DOMAIN,
1258 "minutes of transactions.\n"));
1259 } else if (loss > 0) {
1260 (void) printf(dgettext(TEXT_DOMAIN,
1261 "%s approximately %lld "),
1262 dryrun ? "Would discard" : "Discarded", loss);
1263 (void) printf(dgettext(TEXT_DOMAIN,
1264 "seconds of transactions.\n"));
1265 }
1266 }
1267}
1268
1269void
1270zpool_explain_recover(libzfs_handle_t *hdl, const char *name, int reason,
1271 nvlist_t *config)
1272{
572e2857 1273 nvlist_t *nv = NULL;
428870ff
BB		 1274 int64_t loss = -1;
1275 uint64_t edata = UINT64_MAX;
1276 uint64_t rewindto;
1277 struct tm t;
1278 char timestr[128];
1279
1280 if (!hdl->libzfs_printerr)
1281 return;
1282
1283 if (reason >= 0)
1284 (void) printf(dgettext(TEXT_DOMAIN, "action: "));
1285 else
1286 (void) printf(dgettext(TEXT_DOMAIN, "\t"));
1287
1288 /* All attempted rewinds failed if ZPOOL_CONFIG_LOAD_TIME missing */
572e2857
BB		 1289 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, &nv) != 0 ||
1290 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_TIME, &rewindto) != 0)
428870ff
BB		 1291 goto no_info;
1292
572e2857
BB		 1293 (void) nvlist_lookup_int64(nv, ZPOOL_CONFIG_REWIND_TIME, &loss);
1294 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_LOAD_DATA_ERRORS,
428870ff
BB		 1295 &edata);
1296
1297 (void) printf(dgettext(TEXT_DOMAIN,
1298 "Recovery is possible, but will result in some data loss.\n"));
1299
1300 if (localtime_r((time_t *)&rewindto, &t) != NULL &&
1301 strftime(timestr, 128, 0, &t) != 0) {
1302 (void) printf(dgettext(TEXT_DOMAIN,
1303 "\tReturning the pool to its state as of %s\n"
1304 "\tshould correct the problem. "),
1305 timestr);
1306 } else {
1307 (void) printf(dgettext(TEXT_DOMAIN,
1308 "\tReverting the pool to an earlier state "
1309 "should correct the problem.\n\t"));
1310 }
1311
1312 if (loss > 120) {
1313 (void) printf(dgettext(TEXT_DOMAIN,
1314 "Approximately %lld minutes of data\n"
1315 "\tmust be discarded, irreversibly. "), (loss + 30) / 60);
1316 } else if (loss > 0) {
1317 (void) printf(dgettext(TEXT_DOMAIN,
1318 "Approximately %lld seconds of data\n"
1319 "\tmust be discarded, irreversibly. "), loss);
1320 }
1321 if (edata != 0 && edata != UINT64_MAX) {
1322 if (edata == 1) {
1323 (void) printf(dgettext(TEXT_DOMAIN,
1324 "After rewind, at least\n"
1325 "\tone persistent user-data error will remain. "));
1326 } else {
1327 (void) printf(dgettext(TEXT_DOMAIN,
1328 "After rewind, several\n"
1329 "\tpersistent user-data errors will remain. "));
1330 }
1331 }
1332 (void) printf(dgettext(TEXT_DOMAIN,
1333 "Recovery can be attempted\n\tby executing 'zpool %s -F %s'. "),
1334 reason >= 0 ? "clear" : "import", name);
1335
1336 (void) printf(dgettext(TEXT_DOMAIN,
1337 "A scrub of the pool\n"
1338 "\tis strongly recommended after recovery.\n"));
1339 return;
1340
1341no_info:
1342 (void) printf(dgettext(TEXT_DOMAIN,
1343 "Destroy and re-create the pool from\n\ta backup source.\n"));
1344}
1345
34dc7c2f
BB		 1346/*
1347 * zpool_import() is a contracted interface. Should be kept the same
1348 * if possible.
1349 *
1350 * Applications should use zpool_import_props() to import a pool with
1351 * new properties value to be set.
1352 */
1353int
1354zpool_import(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
1355 char *altroot)
1356{
1357 nvlist_t *props = NULL;
1358 int ret;
1359
1360 if (altroot != NULL) {
1361 if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
1362 return (zfs_error_fmt(hdl, EZFS_NOMEM,
1363 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1364 newname));
1365 }
1366
1367 if (nvlist_add_string(props,
fb5f0bc8
BB		 1368 zpool_prop_to_name(ZPOOL_PROP_ALTROOT), altroot) != 0 ||
1369 nvlist_add_string(props,
1370 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE), "none") != 0) {
34dc7c2f
BB		 1371 nvlist_free(props);
1372 return (zfs_error_fmt(hdl, EZFS_NOMEM,
1373 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1374 newname));
1375 }
1376 }
1377
572e2857
BB		 1378 ret = zpool_import_props(hdl, config, newname, props,
1379 ZFS_IMPORT_NORMAL);
34dc7c2f
BB		 1380 if (props)
1381 nvlist_free(props);
1382 return (ret);
1383}
1384
572e2857
BB		 1385static void
1386print_vdev_tree(libzfs_handle_t *hdl, const char *name, nvlist_t *nv,
1387 int indent)
1388{
1389 nvlist_t **child;
1390 uint_t c, children;
1391 char *vname;
1392 uint64_t is_log = 0;
1393
1394 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG,
1395 &is_log);
1396
1397 if (name != NULL)
1398 (void) printf("\t%*s%s%s\n", indent, "", name,
1399 is_log ? " [log]" : "");
1400
1401 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1402 &child, &children) != 0)
1403 return;
1404
1405 for (c = 0; c < children; c++) {
1406 vname = zpool_vdev_name(hdl, NULL, child[c], B_TRUE);
1407 print_vdev_tree(hdl, vname, child[c], indent + 2);
1408 free(vname);
1409 }
1410}
1411
34dc7c2f
BB		 1412/*
1413 * Import the given pool using the known configuration and a list of
1414 * properties to be set. The configuration should have come from
1415 * zpool_find_import(). The 'newname' parameters control whether the pool
1416 * is imported with a different name.
1417 */
1418int
1419zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname,
572e2857 1420 nvlist_t *props, int flags)
34dc7c2f
BB		 1421{
1422 zfs_cmd_t zc = { 0 };
428870ff 1423 zpool_rewind_policy_t policy;
572e2857
BB		 1424 nvlist_t *nv = NULL;
1425 nvlist_t *nvinfo = NULL;
1426 nvlist_t *missing = NULL;
34dc7c2f
BB		 1427 char *thename;
1428 char *origname;
1429 int ret;
572e2857 1430 int error = 0;
34dc7c2f
BB		 1431 char errbuf[1024];
1432
1433 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
1434 &origname) == 0);
1435
1436 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
1437 "cannot import pool '%s'"), origname);
1438
1439 if (newname != NULL) {
1440 if (!zpool_name_valid(hdl, B_FALSE, newname))
1441 return (zfs_error_fmt(hdl, EZFS_INVALIDNAME,
1442 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1443 newname));
1444 thename = (char *)newname;
1445 } else {
1446 thename = origname;
1447 }
1448
1449 if (props) {
1450 uint64_t version;
572e2857 1451 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE };
34dc7c2f
BB		 1452
1453 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION,
1454 &version) == 0);
1455
b128c09f 1456 if ((props = zpool_valid_proplist(hdl, origname,
572e2857 1457 props, version, flags, errbuf)) == NULL) {
34dc7c2f
BB		 1458 return (-1);
1459 } else if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) {
1460 nvlist_free(props);
1461 return (-1);
1462 }
1463 }
1464
1465 (void) strlcpy(zc.zc_name, thename, sizeof (zc.zc_name));
1466
1467 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
1468 &zc.zc_guid) == 0);
1469
1470 if (zcmd_write_conf_nvlist(hdl, &zc, config) != 0) {
1471 nvlist_free(props);
1472 return (-1);
1473 }
572e2857 1474 if (zcmd_alloc_dst_nvlist(hdl, &zc, zc.zc_nvlist_conf_size * 2) != 0) {
428870ff
BB		 1475 nvlist_free(props);
1476 return (-1);
1477 }
34dc7c2f 1478
572e2857
BB		 1479 zc.zc_cookie = flags;
1480 while ((ret = zfs_ioctl(hdl, ZFS_IOC_POOL_IMPORT, &zc)) != 0 &&
1481 errno == ENOMEM) {
1482 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
1483 zcmd_free_nvlists(&zc);
1484 return (-1);
1485 }
1486 }
1487 if (ret != 0)
1488 error = errno;
1489
1490 (void) zcmd_read_dst_nvlist(hdl, &zc, &nv);
1491 zpool_get_rewind_policy(config, &policy);
1492
1493 if (error) {
34dc7c2f 1494 char desc[1024];
428870ff 1495
428870ff
BB		 1496 /*
1497 * Dry-run failed, but we print out what success
1498 * looks like if we found a best txg
1499 */
572e2857 1500 if (policy.zrp_request & ZPOOL_TRY_REWIND) {
428870ff 1501 zpool_rewind_exclaim(hdl, newname ? origname : thename,
572e2857
BB		 1502 B_TRUE, nv);
1503 nvlist_free(nv);
428870ff
BB		 1504 return (-1);
1505 }
1506
34dc7c2f
BB		 1507 if (newname == NULL)
1508 (void) snprintf(desc, sizeof (desc),
1509 dgettext(TEXT_DOMAIN, "cannot import '%s'"),
1510 thename);
1511 else
1512 (void) snprintf(desc, sizeof (desc),
1513 dgettext(TEXT_DOMAIN, "cannot import '%s' as '%s'"),
1514 origname, thename);
1515
572e2857 1516 switch (error) {
34dc7c2f
BB		 1517 case ENOTSUP:
1518 /*
1519 * Unsupported version.
1520 */
1521 (void) zfs_error(hdl, EZFS_BADVERSION, desc);
1522 break;
1523
1524 case EINVAL:
1525 (void) zfs_error(hdl, EZFS_INVALCONFIG, desc);
1526 break;
1527
428870ff
BB		 1528 case EROFS:
1529 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1530 "one or more devices is read only"));
1531 (void) zfs_error(hdl, EZFS_BADDEV, desc);
1532 break;
1533
572e2857
BB		 1534 case ENXIO:
1535 if (nv && nvlist_lookup_nvlist(nv,
1536 ZPOOL_CONFIG_LOAD_INFO, &nvinfo) == 0 &&
1537 nvlist_lookup_nvlist(nvinfo,
1538 ZPOOL_CONFIG_MISSING_DEVICES, &missing) == 0) {
1539 (void) printf(dgettext(TEXT_DOMAIN,
1540 "The devices below are missing, use "
1541 "'-m' to import the pool anyway:\n"));
1542 print_vdev_tree(hdl, NULL, missing, 2);
1543 (void) printf("\n");
1544 }
1545 (void) zpool_standard_error(hdl, error, desc);
1546 break;
1547
1548 case EEXIST:
1549 (void) zpool_standard_error(hdl, error, desc);
1550 break;
1551
34dc7c2f 1552 default:
572e2857 1553 (void) zpool_standard_error(hdl, error, desc);
428870ff 1554 zpool_explain_recover(hdl,
572e2857 1555 newname ? origname : thename, -error, nv);
428870ff 1556 break;
34dc7c2f
BB		 1557 }
1558
572e2857 1559 nvlist_free(nv);
34dc7c2f
BB		 1560 ret = -1;
1561 } else {
1562 zpool_handle_t *zhp;
1563
1564 /*
1565 * This should never fail, but play it safe anyway.
1566 */
428870ff 1567 if (zpool_open_silent(hdl, thename, &zhp) != 0)
34dc7c2f 1568 ret = -1;
428870ff 1569 else if (zhp != NULL)
34dc7c2f 1570 zpool_close(zhp);
428870ff
BB		 1571 if (policy.zrp_request &
1572 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) {
1573 zpool_rewind_exclaim(hdl, newname ? origname : thename,
572e2857 1574 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), nv);
34dc7c2f 1575 }
572e2857 1576 nvlist_free(nv);
428870ff 1577 return (0);
34dc7c2f
BB		 1578 }
1579
1580 zcmd_free_nvlists(&zc);
1581 nvlist_free(props);
1582
1583 return (ret);
1584}
1585
1586/*
428870ff 1587 * Scan the pool.
34dc7c2f
BB		 1588 */
1589int
428870ff 1590zpool_scan(zpool_handle_t *zhp, pool_scan_func_t func)
34dc7c2f
BB		 1591{
1592 zfs_cmd_t zc = { 0 };
1593 char msg[1024];
1594 libzfs_handle_t *hdl = zhp->zpool_hdl;
1595
1596 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
428870ff 1597 zc.zc_cookie = func;
34dc7c2f 1598
572e2857 1599 if (zfs_ioctl(hdl, ZFS_IOC_POOL_SCAN, &zc) == 0 ||
428870ff 1600 (errno == ENOENT && func != POOL_SCAN_NONE))
34dc7c2f
BB		 1601 return (0);
1602
428870ff
BB		 1603 if (func == POOL_SCAN_SCRUB) {
1604 (void) snprintf(msg, sizeof (msg),
1605 dgettext(TEXT_DOMAIN, "cannot scrub %s"), zc.zc_name);
1606 } else if (func == POOL_SCAN_NONE) {
1607 (void) snprintf(msg, sizeof (msg),
1608 dgettext(TEXT_DOMAIN, "cannot cancel scrubbing %s"),
1609 zc.zc_name);
1610 } else {
1611 assert(!"unexpected result");
1612 }
34dc7c2f 1613
428870ff
BB		 1614 if (errno == EBUSY) {
1615 nvlist_t *nvroot;
1616 pool_scan_stat_t *ps = NULL;
1617 uint_t psc;
1618
1619 verify(nvlist_lookup_nvlist(zhp->zpool_config,
1620 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
1621 (void) nvlist_lookup_uint64_array(nvroot,
1622 ZPOOL_CONFIG_SCAN_STATS, (uint64_t **)&ps, &psc);
1623 if (ps && ps->pss_func == POOL_SCAN_SCRUB)
1624 return (zfs_error(hdl, EZFS_SCRUBBING, msg));
1625 else
1626 return (zfs_error(hdl, EZFS_RESILVERING, msg));
1627 } else if (errno == ENOENT) {
1628 return (zfs_error(hdl, EZFS_NO_SCRUB, msg));
1629 } else {
34dc7c2f 1630 return (zpool_standard_error(hdl, errno, msg));
428870ff
BB		 1631 }
1632}
1633
1634/*
1635 * This provides a very minimal check whether a given string is likely a
1636 * c#t#d# style string. Users of this are expected to do their own
1637 * verification of the s# part.
1638 */
1639#define CTD_CHECK(str) (str && str[0] == 'c' && isdigit(str[1]))
1640
1641/*
1642 * More elaborate version for ones which may start with "/dev/dsk/"
1643 * and the like.
1644 */
1645static int
1646ctd_check_path(char *str) {
1647 /*
1648 * If it starts with a slash, check the last component.
1649 */
1650 if (str && str[0] == '/') {
1651 char *tmp = strrchr(str, '/');
1652
1653 /*
1654 * If it ends in "/old", check the second-to-last
1655 * component of the string instead.
1656 */
1657 if (tmp != str && strcmp(tmp, "/old") == 0) {
1658 for (tmp--; *tmp != '/'; tmp--)
1659 ;
1660 }
1661 str = tmp + 1;
1662 }
1663 return (CTD_CHECK(str));
34dc7c2f
BB		 1664}
1665
1666/*
9babb374
BB		 1667 * Find a vdev that matches the search criteria specified. We use the
1668 * the nvpair name to determine how we should look for the device.
34dc7c2f
BB		 1669 * 'avail_spare' is set to TRUE if the provided guid refers to an AVAIL
1670 * spare; but FALSE if its an INUSE spare.
1671 */
1672static nvlist_t *
9babb374
BB		 1673vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare,
1674 boolean_t *l2cache, boolean_t *log)
34dc7c2f
BB		 1675{
1676 uint_t c, children;
1677 nvlist_t **child;
34dc7c2f 1678 nvlist_t *ret;
b128c09f 1679 uint64_t is_log;
9babb374
BB		 1680 char *srchkey;
1681 nvpair_t *pair = nvlist_next_nvpair(search, NULL);
1682
1683 /* Nothing to look for */
1684 if (search == NULL || pair == NULL)
1685 return (NULL);
1686
1687 /* Obtain the key we will use to search */
1688 srchkey = nvpair_name(pair);
1689
1690 switch (nvpair_type(pair)) {
572e2857 1691 case DATA_TYPE_UINT64:
9babb374 1692 if (strcmp(srchkey, ZPOOL_CONFIG_GUID) == 0) {
572e2857
BB		 1693 uint64_t srchval, theguid;
1694
1695 verify(nvpair_value_uint64(pair, &srchval) == 0);
1696 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
1697 &theguid) == 0);
1698 if (theguid == srchval)
1699 return (nv);
9babb374
BB		 1700 }
1701 break;
9babb374
BB		 1702
1703 case DATA_TYPE_STRING: {
1704 char *srchval, *val;
1705
1706 verify(nvpair_value_string(pair, &srchval) == 0);
1707 if (nvlist_lookup_string(nv, srchkey, &val) != 0)
1708 break;
34dc7c2f 1709
9babb374 1710 /*
428870ff
BB		 1711 * Search for the requested value. Special cases:
1712 *
1713 * - ZPOOL_CONFIG_PATH for whole disk entries. These end in
1714 * "s0" or "s0/old". The "s0" part is hidden from the user,
1715 * but included in the string, so this matches around it.
1716 * - looking for a top-level vdev name (i.e. ZPOOL_CONFIG_TYPE).
1717 *
1718 * Otherwise, all other searches are simple string compares.
9babb374 1719 */
428870ff
BB		 1720 if (strcmp(srchkey, ZPOOL_CONFIG_PATH) == 0 &&
1721 ctd_check_path(val)) {
9babb374
BB		 1722 uint64_t wholedisk = 0;
1723
1724 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
1725 &wholedisk);
1726 if (wholedisk) {
428870ff
BB		 1727 int slen = strlen(srchval);
1728 int vlen = strlen(val);
1729
1730 if (slen != vlen - 2)
1731 break;
1732
1733 /*
1734 * make_leaf_vdev() should only set
1735 * wholedisk for ZPOOL_CONFIG_PATHs which
1736 * will include "/dev/dsk/", giving plenty of
1737 * room for the indices used next.
1738 */
1739 ASSERT(vlen >= 6);
1740
9babb374 1741 /*
428870ff 1742 * strings identical except trailing "s0"
9babb374 1743 */
428870ff
BB		 1744 if (strcmp(&val[vlen - 2], "s0") == 0 &&
1745 strncmp(srchval, val, slen) == 0)
9babb374 1746 return (nv);
428870ff
BB		 1747
1748 /*
1749 * strings identical except trailing "s0/old"
1750 */
1751 if (strcmp(&val[vlen - 6], "s0/old") == 0 &&
1752 strcmp(&srchval[slen - 4], "/old") == 0 &&
1753 strncmp(srchval, val, slen - 4) == 0)
1754 return (nv);
1755
9babb374
BB		 1756 break;
1757 }
428870ff
BB		 1758 } else if (strcmp(srchkey, ZPOOL_CONFIG_TYPE) == 0 && val) {
1759 char *type, *idx, *end, *p;
1760 uint64_t id, vdev_id;
1761
1762 /*
1763 * Determine our vdev type, keeping in mind
1764 * that the srchval is composed of a type and
1765 * vdev id pair (i.e. mirror-4).
1766 */
1767 if ((type = strdup(srchval)) == NULL)
1768 return (NULL);
1769
1770 if ((p = strrchr(type, '-')) == NULL) {
1771 free(type);
1772 break;
1773 }
1774 idx = p + 1;
1775 *p = '\0';
1776
1777 /*
1778 * If the types don't match then keep looking.
1779 */
1780 if (strncmp(val, type, strlen(val)) != 0) {
1781 free(type);
1782 break;
1783 }
1784
1785 verify(strncmp(type, VDEV_TYPE_RAIDZ,
1786 strlen(VDEV_TYPE_RAIDZ)) == 0 ||
1787 strncmp(type, VDEV_TYPE_MIRROR,
1788 strlen(VDEV_TYPE_MIRROR)) == 0);
1789 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID,
1790 &id) == 0);
1791
1792 errno = 0;
1793 vdev_id = strtoull(idx, &end, 10);
1794
1795 free(type);
1796 if (errno != 0)
1797 return (NULL);
1798
1799 /*
1800 * Now verify that we have the correct vdev id.
1801 */
1802 if (vdev_id == id)
1803 return (nv);
9babb374 1804 }
34dc7c2f 1805
34dc7c2f 1806 /*
9babb374 1807 * Common case
34dc7c2f 1808 */
9babb374 1809 if (strcmp(srchval, val) == 0)
34dc7c2f 1810 return (nv);
9babb374
BB		 1811 break;
1812 }
1813
1814 default:
1815 break;
34dc7c2f
BB		 1816 }
1817
1818 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
1819 &child, &children) != 0)
1820 return (NULL);
1821
b128c09f 1822 for (c = 0; c < children; c++) {
9babb374 1823 if ((ret = vdev_to_nvlist_iter(child[c], search,
b128c09f
BB		 1824 avail_spare, l2cache, NULL)) != NULL) {
1825 /*
1826 * The 'is_log' value is only set for the toplevel
1827 * vdev, not the leaf vdevs. So we always lookup the
1828 * log device from the root of the vdev tree (where
1829 * 'log' is non-NULL).
1830 */
1831 if (log != NULL &&
1832 nvlist_lookup_uint64(child[c],
1833 ZPOOL_CONFIG_IS_LOG, &is_log) == 0 &&
1834 is_log) {
1835 *log = B_TRUE;
1836 }
34dc7c2f 1837 return (ret);
b128c09f
BB		 1838 }
1839 }
34dc7c2f
BB		 1840
1841 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES,
1842 &child, &children) == 0) {
1843 for (c = 0; c < children; c++) {
9babb374 1844 if ((ret = vdev_to_nvlist_iter(child[c], search,
b128c09f 1845 avail_spare, l2cache, NULL)) != NULL) {
34dc7c2f
BB		 1846 *avail_spare = B_TRUE;
1847 return (ret);
1848 }
1849 }
1850 }
1851
1852 if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE,
1853 &child, &children) == 0) {
1854 for (c = 0; c < children; c++) {
9babb374 1855 if ((ret = vdev_to_nvlist_iter(child[c], search,
b128c09f 1856 avail_spare, l2cache, NULL)) != NULL) {
34dc7c2f
BB		 1857 *l2cache = B_TRUE;
1858 return (ret);
1859 }
1860 }
1861 }
1862
1863 return (NULL);
1864}
1865
9babb374
BB		 1866/*
1867 * Given a physical path (minus the "/devices" prefix), find the
1868 * associated vdev.
1869 */
1870nvlist_t *
1871zpool_find_vdev_by_physpath(zpool_handle_t *zhp, const char *ppath,
1872 boolean_t *avail_spare, boolean_t *l2cache, boolean_t *log)
1873{
1874 nvlist_t *search, *nvroot, *ret;
1875
1876 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1877 verify(nvlist_add_string(search, ZPOOL_CONFIG_PHYS_PATH, ppath) == 0);
1878
1879 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
1880 &nvroot) == 0);
1881
1882 *avail_spare = B_FALSE;
572e2857
BB		 1883 *l2cache = B_FALSE;
1884 if (log != NULL)
1885 *log = B_FALSE;
9babb374
BB		 1886 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
1887 nvlist_free(search);
1888
1889 return (ret);
1890}
1891
428870ff
BB		 1892/*
1893 * Determine if we have an "interior" top-level vdev (i.e mirror/raidz).
1894 */
1895boolean_t
1896zpool_vdev_is_interior(const char *name)
1897{
1898 if (strncmp(name, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 ||
1899 strncmp(name, VDEV_TYPE_MIRROR, strlen(VDEV_TYPE_MIRROR)) == 0)
1900 return (B_TRUE);
1901 return (B_FALSE);
1902}
1903
34dc7c2f
BB		 1904nvlist_t *
1905zpool_find_vdev(zpool_handle_t *zhp, const char *path, boolean_t *avail_spare,
b128c09f 1906 boolean_t *l2cache, boolean_t *log)
34dc7c2f
BB		 1907{
1908 char buf[MAXPATHLEN];
34dc7c2f 1909 char *end;
9babb374 1910 nvlist_t *nvroot, *search, *ret;
34dc7c2f
BB		 1911 uint64_t guid;
1912
9babb374
BB		 1913 verify(nvlist_alloc(&search, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1914
34dc7c2f
BB		 1915 guid = strtoull(path, &end, 10);
1916 if (guid != 0 && *end == '\0') {
9babb374 1917 verify(nvlist_add_uint64(search, ZPOOL_CONFIG_GUID, guid) == 0);
428870ff
BB		 1918 } else if (zpool_vdev_is_interior(path)) {
1919 verify(nvlist_add_string(search, ZPOOL_CONFIG_TYPE, path) == 0);
34dc7c2f
BB		 1920 } else if (path[0] != '/') {
1921 (void) snprintf(buf, sizeof (buf), "%s%s", "/dev/dsk/", path);
9babb374 1922 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, buf) == 0);
34dc7c2f 1923 } else {
9babb374 1924 verify(nvlist_add_string(search, ZPOOL_CONFIG_PATH, path) == 0);
34dc7c2f
BB		 1925 }
1926
1927 verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
1928 &nvroot) == 0);
1929
1930 *avail_spare = B_FALSE;
1931 *l2cache = B_FALSE;
b128c09f
BB		 1932 if (log != NULL)
1933 *log = B_FALSE;
9babb374
BB		 1934 ret = vdev_to_nvlist_iter(nvroot, search, avail_spare, l2cache, log);
1935 nvlist_free(search);
1936
1937 return (ret);
b128c09f
BB		 1938}
1939
1940static int
1941vdev_online(nvlist_t *nv)
1942{
1943 uint64_t ival;
1944
1945 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_OFFLINE, &ival) == 0 ||
1946 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_FAULTED, &ival) == 0 ||
1947 nvlist_lookup_uint64(nv, ZPOOL_CONFIG_REMOVED, &ival) == 0)
1948 return (0);
1949
1950 return (1);
1951}
1952
1953/*
9babb374 1954 * Helper function for zpool_get_physpaths().
b128c09f 1955 */
9babb374
BB		 1956static int
1957vdev_get_one_physpath(nvlist_t *config, char *physpath, size_t physpath_size,
1958 size_t *bytes_written)
1959{
1960 size_t bytes_left, pos, rsz;
1961 char *tmppath;
1962 const char *format;
1963
1964 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PHYS_PATH,
1965 &tmppath) != 0)
1966 return (EZFS_NODEVICE);
1967
1968 pos = *bytes_written;
1969 bytes_left = physpath_size - pos;
1970 format = (pos == 0) ? "%s" : " %s";
1971
1972 rsz = snprintf(physpath + pos, bytes_left, format, tmppath);
1973 *bytes_written += rsz;
1974
1975 if (rsz >= bytes_left) {
1976 /* if physpath was not copied properly, clear it */
1977 if (bytes_left != 0) {
1978 physpath[pos] = 0;
1979 }
1980 return (EZFS_NOSPC);
1981 }
1982 return (0);
1983}
1984
1985static int
1986vdev_get_physpaths(nvlist_t *nv, char *physpath, size_t phypath_size,
1987 size_t *rsz, boolean_t is_spare)
1988{
1989 char *type;
1990 int ret;
1991
1992 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) != 0)
1993 return (EZFS_INVALCONFIG);
1994
1995 if (strcmp(type, VDEV_TYPE_DISK) == 0) {
1996 /*
1997 * An active spare device has ZPOOL_CONFIG_IS_SPARE set.
1998 * For a spare vdev, we only want to boot from the active
1999 * spare device.
2000 */
2001 if (is_spare) {
2002 uint64_t spare = 0;
2003 (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_SPARE,
2004 &spare);
2005 if (!spare)
2006 return (EZFS_INVALCONFIG);
2007 }
2008
2009 if (vdev_online(nv)) {
2010 if ((ret = vdev_get_one_physpath(nv, physpath,
2011 phypath_size, rsz)) != 0)
2012 return (ret);
2013 }
2014 } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0 ||
2015 strcmp(type, VDEV_TYPE_REPLACING) == 0 ||
2016 (is_spare = (strcmp(type, VDEV_TYPE_SPARE) == 0))) {
2017 nvlist_t **child;
2018 uint_t count;
2019 int i, ret;
2020
2021 if (nvlist_lookup_nvlist_array(nv,
2022 ZPOOL_CONFIG_CHILDREN, &child, &count) != 0)
2023 return (EZFS_INVALCONFIG);
2024
2025 for (i = 0; i < count; i++) {
2026 ret = vdev_get_physpaths(child[i], physpath,
2027 phypath_size, rsz, is_spare);
2028 if (ret == EZFS_NOSPC)
2029 return (ret);
2030 }
2031 }
2032
2033 return (EZFS_POOL_INVALARG);
2034}
2035
2036/*
2037 * Get phys_path for a root pool config.
2038 * Return 0 on success; non-zero on failure.
2039 */
2040static int
2041zpool_get_config_physpath(nvlist_t *config, char *physpath, size_t phypath_size)
b128c09f 2042{
9babb374 2043 size_t rsz;
b128c09f
BB		 2044 nvlist_t *vdev_root;
2045 nvlist_t **child;
2046 uint_t count;
9babb374 2047 char *type;
b128c09f 2048
9babb374 2049 rsz = 0;
b128c09f 2050
9babb374
BB		 2051 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
2052 &vdev_root) != 0)
2053 return (EZFS_INVALCONFIG);
b128c09f 2054
9babb374
BB		 2055 if (nvlist_lookup_string(vdev_root, ZPOOL_CONFIG_TYPE, &type) != 0 ||
2056 nvlist_lookup_nvlist_array(vdev_root, ZPOOL_CONFIG_CHILDREN,
b128c09f 2057 &child, &count) != 0)
9babb374 2058 return (EZFS_INVALCONFIG);
b128c09f 2059
9babb374
BB		 2060 /*
2061 * root pool can not have EFI labeled disks and can only have
2062 * a single top-level vdev.
2063 */
2064 if (strcmp(type, VDEV_TYPE_ROOT) != 0 || count != 1 ||
2065 pool_uses_efi(vdev_root))
2066 return (EZFS_POOL_INVALARG);
b128c09f 2067
9babb374
BB		 2068 (void) vdev_get_physpaths(child[0], physpath, phypath_size, &rsz,
2069 B_FALSE);
2070
2071 /* No online devices */
2072 if (rsz == 0)
2073 return (EZFS_NODEVICE);
b128c09f
BB		 2074
2075 return (0);
34dc7c2f
BB		 2076}
2077
9babb374
BB		 2078/*
2079 * Get phys_path for a root pool
2080 * Return 0 on success; non-zero on failure.
2081 */
2082int
2083zpool_get_physpath(zpool_handle_t *zhp, char *physpath, size_t phypath_size)
2084{
2085 return (zpool_get_config_physpath(zhp->zpool_config, physpath,
2086 phypath_size));
2087}
2088
9babb374
BB		 2089/*
2090 * If the device has being dynamically expanded then we need to relabel
2091 * the disk to use the new unallocated space.
2092 */
2093static int
2094zpool_relabel_disk(libzfs_handle_t *hdl, const char *name)
2095{
2096 char path[MAXPATHLEN];
2097 char errbuf[1024];
2098 int fd, error;
2099 int (*_efi_use_whole_disk)(int);
2100
2101 if ((_efi_use_whole_disk = (int (*)(int))dlsym(RTLD_DEFAULT,
2102 "efi_use_whole_disk")) == NULL)
2103 return (-1);
2104
2105 (void) snprintf(path, sizeof (path), "%s/%s", RDISK_ROOT, name);
2106
2107 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) {
2108 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
2109 "relabel '%s': unable to open device"), name);
2110 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf));
2111 }
2112
2113 /*
2114 * It's possible that we might encounter an error if the device
2115 * does not have any unallocated space left. If so, we simply
2116 * ignore that error and continue on.
2117 */
2118 error = _efi_use_whole_disk(fd);
2119 (void) close(fd);
2120 if (error && error != VT_ENOSPC) {
2121 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "cannot "
2122 "relabel '%s': unable to read disk capacity"), name);
2123 return (zfs_error(hdl, EZFS_NOCAP, errbuf));
2124 }
2125 return (0);
2126}
2127
34dc7c2f
BB		 2128/*
2129 * Bring the specified vdev online. The 'flags' parameter is a set of the
2130 * ZFS_ONLINE_* flags.
2131 */
2132int
2133zpool_vdev_online(zpool_handle_t *zhp, const char *path, int flags,
2134 vdev_state_t *newstate)
2135{
2136 zfs_cmd_t zc = { 0 };
2137 char msg[1024];
2138 nvlist_t *tgt;
9babb374 2139 boolean_t avail_spare, l2cache, islog;
34dc7c2f
BB		 2140 libzfs_handle_t *hdl = zhp->zpool_hdl;
2141
9babb374
BB		 2142 if (flags & ZFS_ONLINE_EXPAND) {
2143 (void) snprintf(msg, sizeof (msg),
2144 dgettext(TEXT_DOMAIN, "cannot expand %s"), path);
2145 } else {
2146 (void) snprintf(msg, sizeof (msg),
2147 dgettext(TEXT_DOMAIN, "cannot online %s"), path);
2148 }
34dc7c2f
BB		 2149
2150 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 2151 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
9babb374 2152 &islog)) == NULL)
34dc7c2f
BB		 2153 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2154
2155 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2156
428870ff 2157 if (avail_spare)
34dc7c2f
BB		 2158 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2159
9babb374
BB		 2160 if (flags & ZFS_ONLINE_EXPAND ||
2161 zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOEXPAND, NULL)) {
2162 char *pathname = NULL;
2163 uint64_t wholedisk = 0;
2164
2165 (void) nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_WHOLE_DISK,
2166 &wholedisk);
2167 verify(nvlist_lookup_string(tgt, ZPOOL_CONFIG_PATH,
2168 &pathname) == 0);
2169
2170 /*
2171 * XXX - L2ARC 1.0 devices can't support expansion.
2172 */
2173 if (l2cache) {
2174 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2175 "cannot expand cache devices"));
2176 return (zfs_error(hdl, EZFS_VDEVNOTSUP, msg));
2177 }
2178
2179 if (wholedisk) {
2180 pathname += strlen(DISK_ROOT) + 1;
572e2857 2181 (void) zpool_relabel_disk(hdl, pathname);
9babb374
BB		 2182 }
2183 }
2184
34dc7c2f
BB		 2185 zc.zc_cookie = VDEV_STATE_ONLINE;
2186 zc.zc_obj = flags;
2187
572e2857 2188 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) != 0) {
428870ff
BB		 2189 if (errno == EINVAL) {
2190 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "was split "
2191 "from this pool into a new one. Use '%s' "
2192 "instead"), "zpool detach");
2193 return (zfs_error(hdl, EZFS_POSTSPLIT_ONLINE, msg));
2194 }
34dc7c2f 2195 return (zpool_standard_error(hdl, errno, msg));
428870ff 2196 }
34dc7c2f
BB		 2197
2198 *newstate = zc.zc_cookie;
2199 return (0);
2200}
2201
2202/*
2203 * Take the specified vdev offline
2204 */
2205int
2206zpool_vdev_offline(zpool_handle_t *zhp, const char *path, boolean_t istmp)
2207{
2208 zfs_cmd_t zc = { 0 };
2209 char msg[1024];
2210 nvlist_t *tgt;
2211 boolean_t avail_spare, l2cache;
2212 libzfs_handle_t *hdl = zhp->zpool_hdl;
2213
2214 (void) snprintf(msg, sizeof (msg),
2215 dgettext(TEXT_DOMAIN, "cannot offline %s"), path);
2216
2217 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f
BB		 2218 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
2219 NULL)) == NULL)
34dc7c2f
BB		 2220 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2221
2222 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2223
428870ff 2224 if (avail_spare)
34dc7c2f
BB		 2225 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2226
34dc7c2f
BB		 2227 zc.zc_cookie = VDEV_STATE_OFFLINE;
2228 zc.zc_obj = istmp ? ZFS_OFFLINE_TEMPORARY : 0;
2229
572e2857 2230 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
34dc7c2f
BB		 2231 return (0);
2232
2233 switch (errno) {
2234 case EBUSY:
2235
2236 /*
2237 * There are no other replicas of this device.
2238 */
2239 return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
2240
9babb374
BB		 2241 case EEXIST:
2242 /*
2243 * The log device has unplayed logs
2244 */
2245 return (zfs_error(hdl, EZFS_UNPLAYED_LOGS, msg));
2246
34dc7c2f
BB		 2247 default:
2248 return (zpool_standard_error(hdl, errno, msg));
2249 }
2250}
2251
2252/*
2253 * Mark the given vdev faulted.
2254 */
2255int
428870ff 2256zpool_vdev_fault(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux)
34dc7c2f
BB		 2257{
2258 zfs_cmd_t zc = { 0 };
2259 char msg[1024];
2260 libzfs_handle_t *hdl = zhp->zpool_hdl;
2261
2262 (void) snprintf(msg, sizeof (msg),
2263 dgettext(TEXT_DOMAIN, "cannot fault %llu"), guid);
2264
2265 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2266 zc.zc_guid = guid;
2267 zc.zc_cookie = VDEV_STATE_FAULTED;
428870ff 2268 zc.zc_obj = aux;
34dc7c2f 2269
572e2857 2270 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
34dc7c2f
BB		 2271 return (0);
2272
2273 switch (errno) {
2274 case EBUSY:
2275
2276 /*
2277 * There are no other replicas of this device.
2278 */
2279 return (zfs_error(hdl, EZFS_NOREPLICAS, msg));
2280
2281 default:
2282 return (zpool_standard_error(hdl, errno, msg));
2283 }
2284
2285}
2286
2287/*
2288 * Mark the given vdev degraded.
2289 */
2290int
428870ff 2291zpool_vdev_degrade(zpool_handle_t *zhp, uint64_t guid, vdev_aux_t aux)
34dc7c2f
BB		 2292{
2293 zfs_cmd_t zc = { 0 };
2294 char msg[1024];
2295 libzfs_handle_t *hdl = zhp->zpool_hdl;
2296
2297 (void) snprintf(msg, sizeof (msg),
2298 dgettext(TEXT_DOMAIN, "cannot degrade %llu"), guid);
2299
2300 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2301 zc.zc_guid = guid;
2302 zc.zc_cookie = VDEV_STATE_DEGRADED;
428870ff 2303 zc.zc_obj = aux;
34dc7c2f 2304
572e2857 2305 if (ioctl(hdl->libzfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
34dc7c2f
BB		 2306 return (0);
2307
2308 return (zpool_standard_error(hdl, errno, msg));
2309}
2310
2311/*
2312 * Returns TRUE if the given nvlist is a vdev that was originally swapped in as
2313 * a hot spare.
2314 */
2315static boolean_t
2316is_replacing_spare(nvlist_t *search, nvlist_t *tgt, int which)
2317{
2318 nvlist_t **child;
2319 uint_t c, children;
2320 char *type;
2321
2322 if (nvlist_lookup_nvlist_array(search, ZPOOL_CONFIG_CHILDREN, &child,
2323 &children) == 0) {
2324 verify(nvlist_lookup_string(search, ZPOOL_CONFIG_TYPE,
2325 &type) == 0);
2326
2327 if (strcmp(type, VDEV_TYPE_SPARE) == 0 &&
2328 children == 2 && child[which] == tgt)
2329 return (B_TRUE);
2330
2331 for (c = 0; c < children; c++)
2332 if (is_replacing_spare(child[c], tgt, which))
2333 return (B_TRUE);
2334 }
2335
2336 return (B_FALSE);
2337}
2338
2339/*
2340 * Attach new_disk (fully described by nvroot) to old_disk.
2341 * If 'replacing' is specified, the new disk will replace the old one.
2342 */
2343int
2344zpool_vdev_attach(zpool_handle_t *zhp,
2345 const char *old_disk, const char *new_disk, nvlist_t *nvroot, int replacing)
2346{
2347 zfs_cmd_t zc = { 0 };
2348 char msg[1024];
2349 int ret;
2350 nvlist_t *tgt;
b128c09f
BB		 2351 boolean_t avail_spare, l2cache, islog;
2352 uint64_t val;
572e2857 2353 char *newname;
34dc7c2f
BB		 2354 nvlist_t **child;
2355 uint_t children;
2356 nvlist_t *config_root;
2357 libzfs_handle_t *hdl = zhp->zpool_hdl;
b128c09f 2358 boolean_t rootpool = pool_is_bootable(zhp);
34dc7c2f
BB		 2359
2360 if (replacing)
2361 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
2362 "cannot replace %s with %s"), old_disk, new_disk);
2363 else
2364 (void) snprintf(msg, sizeof (msg), dgettext(TEXT_DOMAIN,
2365 "cannot attach %s to %s"), new_disk, old_disk);
2366
b128c09f
BB		 2367 /*
2368 * If this is a root pool, make sure that we're not attaching an
2369 * EFI labeled device.
2370 */
2371 if (rootpool && pool_uses_efi(nvroot)) {
2372 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2373 "EFI labeled devices are not supported on root pools."));
2374 return (zfs_error(hdl, EZFS_POOL_NOTSUP, msg));
2375 }
2376
34dc7c2f 2377 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f
BB		 2378 if ((tgt = zpool_find_vdev(zhp, old_disk, &avail_spare, &l2cache,
2379 &islog)) == 0)
34dc7c2f
BB		 2380 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2381
2382 if (avail_spare)
2383 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2384
2385 if (l2cache)
2386 return (zfs_error(hdl, EZFS_ISL2CACHE, msg));
2387
2388 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2389 zc.zc_cookie = replacing;
2390
2391 if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN,
2392 &child, &children) != 0 || children != 1) {
2393 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2394 "new device must be a single disk"));
2395 return (zfs_error(hdl, EZFS_INVALCONFIG, msg));
2396 }
2397
2398 verify(nvlist_lookup_nvlist(zpool_get_config(zhp, NULL),
2399 ZPOOL_CONFIG_VDEV_TREE, &config_root) == 0);
2400
428870ff 2401 if ((newname = zpool_vdev_name(NULL, NULL, child[0], B_FALSE)) == NULL)
b128c09f
BB		 2402 return (-1);
2403
34dc7c2f
BB		 2404 /*
2405 * If the target is a hot spare that has been swapped in, we can only
2406 * replace it with another hot spare.
2407 */
2408 if (replacing &&
2409 nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_IS_SPARE, &val) == 0 &&
b128c09f
BB		 2410 (zpool_find_vdev(zhp, newname, &avail_spare, &l2cache,
2411 NULL) == NULL || !avail_spare) &&
2412 is_replacing_spare(config_root, tgt, 1)) {
34dc7c2f
BB		 2413 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2414 "can only be replaced by another hot spare"));
b128c09f 2415 free(newname);
34dc7c2f
BB		 2416 return (zfs_error(hdl, EZFS_BADTARGET, msg));
2417 }
2418
b128c09f
BB		 2419 free(newname);
2420
34dc7c2f
BB		 2421 if (zcmd_write_conf_nvlist(hdl, &zc, nvroot) != 0)
2422 return (-1);
2423
572e2857 2424 ret = zfs_ioctl(hdl, ZFS_IOC_VDEV_ATTACH, &zc);
34dc7c2f
BB		 2425
2426 zcmd_free_nvlists(&zc);
2427
b128c09f
BB		 2428 if (ret == 0) {
2429 if (rootpool) {
9babb374
BB		 2430 /*
2431 * XXX need a better way to prevent user from
2432 * booting up a half-baked vdev.
2433 */
2434 (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "Make "
2435 "sure to wait until resilver is done "
2436 "before rebooting.\n"));
b128c09f 2437 }
34dc7c2f 2438 return (0);
b128c09f 2439 }
34dc7c2f
BB		 2440
2441 switch (errno) {
2442 case ENOTSUP:
2443 /*
2444 * Can't attach to or replace this type of vdev.
2445 */
2446 if (replacing) {
572e2857
BB		 2447 uint64_t version = zpool_get_prop_int(zhp,
2448 ZPOOL_PROP_VERSION, NULL);
2449
b128c09f 2450 if (islog)
34dc7c2f
BB		 2451 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2452 "cannot replace a log with a spare"));
572e2857
BB		 2453 else if (version >= SPA_VERSION_MULTI_REPLACE)
2454 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2455 "already in replacing/spare config; wait "
2456 "for completion or use 'zpool detach'"));
34dc7c2f
BB		 2457 else
2458 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2459 "cannot replace a replacing device"));
2460 } else {
2461 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2462 "can only attach to mirrors and top-level "
2463 "disks"));
2464 }
2465 (void) zfs_error(hdl, EZFS_BADTARGET, msg);
2466 break;
2467
2468 case EINVAL:
2469 /*
2470 * The new device must be a single disk.
2471 */
2472 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2473 "new device must be a single disk"));
2474 (void) zfs_error(hdl, EZFS_INVALCONFIG, msg);
2475 break;
2476
2477 case EBUSY:
2478 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "%s is busy"),
2479 new_disk);
2480 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2481 break;
2482
2483 case EOVERFLOW:
2484 /*
2485 * The new device is too small.
2486 */
2487 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2488 "device is too small"));
2489 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2490 break;
2491
2492 case EDOM:
2493 /*
2494 * The new device has a different alignment requirement.
2495 */
2496 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2497 "devices have different sector alignment"));
2498 (void) zfs_error(hdl, EZFS_BADDEV, msg);
2499 break;
2500
2501 case ENAMETOOLONG:
2502 /*
2503 * The resulting top-level vdev spec won't fit in the label.
2504 */
2505 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, msg);
2506 break;
2507
2508 default:
2509 (void) zpool_standard_error(hdl, errno, msg);
2510 }
2511
2512 return (-1);
2513}
2514
2515/*
2516 * Detach the specified device.
2517 */
2518int
2519zpool_vdev_detach(zpool_handle_t *zhp, const char *path)
2520{
2521 zfs_cmd_t zc = { 0 };
2522 char msg[1024];
2523 nvlist_t *tgt;
2524 boolean_t avail_spare, l2cache;
2525 libzfs_handle_t *hdl = zhp->zpool_hdl;
2526
2527 (void) snprintf(msg, sizeof (msg),
2528 dgettext(TEXT_DOMAIN, "cannot detach %s"), path);
2529
2530 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f
BB		 2531 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
2532 NULL)) == 0)
34dc7c2f
BB		 2533 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2534
2535 if (avail_spare)
2536 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2537
2538 if (l2cache)
2539 return (zfs_error(hdl, EZFS_ISL2CACHE, msg));
2540
2541 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2542
2543 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_DETACH, &zc) == 0)
2544 return (0);
2545
2546 switch (errno) {
2547
2548 case ENOTSUP:
2549 /*
2550 * Can't detach from this type of vdev.
2551 */
2552 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "only "
2553 "applicable to mirror and replacing vdevs"));
572e2857 2554 (void) zfs_error(hdl, EZFS_BADTARGET, msg);
34dc7c2f
BB		 2555 break;
2556
2557 case EBUSY:
2558 /*
2559 * There are no other replicas of this device.
2560 */
2561 (void) zfs_error(hdl, EZFS_NOREPLICAS, msg);
2562 break;
2563
2564 default:
2565 (void) zpool_standard_error(hdl, errno, msg);
2566 }
2567
2568 return (-1);
2569}
2570
428870ff
BB		 2571/*
2572 * Find a mirror vdev in the source nvlist.
2573 *
2574 * The mchild array contains a list of disks in one of the top-level mirrors
2575 * of the source pool. The schild array contains a list of disks that the
2576 * user specified on the command line. We loop over the mchild array to
2577 * see if any entry in the schild array matches.
2578 *
2579 * If a disk in the mchild array is found in the schild array, we return
2580 * the index of that entry. Otherwise we return -1.
2581 */
2582static int
2583find_vdev_entry(zpool_handle_t *zhp, nvlist_t **mchild, uint_t mchildren,
2584 nvlist_t **schild, uint_t schildren)
2585{
2586 uint_t mc;
2587
2588 for (mc = 0; mc < mchildren; mc++) {
2589 uint_t sc;
2590 char *mpath = zpool_vdev_name(zhp->zpool_hdl, zhp,
2591 mchild[mc], B_FALSE);
2592
2593 for (sc = 0; sc < schildren; sc++) {
2594 char *spath = zpool_vdev_name(zhp->zpool_hdl, zhp,
2595 schild[sc], B_FALSE);
2596 boolean_t result = (strcmp(mpath, spath) == 0);
2597
2598 free(spath);
2599 if (result) {
2600 free(mpath);
2601 return (mc);
2602 }
2603 }
2604
2605 free(mpath);
2606 }
2607
2608 return (-1);
2609}
2610
2611/*
2612 * Split a mirror pool. If newroot points to null, then a new nvlist
2613 * is generated and it is the responsibility of the caller to free it.
2614 */
2615int
2616zpool_vdev_split(zpool_handle_t *zhp, char *newname, nvlist_t **newroot,
2617 nvlist_t *props, splitflags_t flags)
2618{
2619 zfs_cmd_t zc = { 0 };
2620 char msg[1024];
2621 nvlist_t *tree, *config, **child, **newchild, *newconfig = NULL;
2622 nvlist_t **varray = NULL, *zc_props = NULL;
2623 uint_t c, children, newchildren, lastlog = 0, vcount, found = 0;
2624 libzfs_handle_t *hdl = zhp->zpool_hdl;
2625 uint64_t vers;
2626 boolean_t freelist = B_FALSE, memory_err = B_TRUE;
2627 int retval = 0;
2628
2629 (void) snprintf(msg, sizeof (msg),
2630 dgettext(TEXT_DOMAIN, "Unable to split %s"), zhp->zpool_name);
2631
2632 if (!zpool_name_valid(hdl, B_FALSE, newname))
2633 return (zfs_error(hdl, EZFS_INVALIDNAME, msg));
2634
2635 if ((config = zpool_get_config(zhp, NULL)) == NULL) {
2636 (void) fprintf(stderr, gettext("Internal error: unable to "
2637 "retrieve pool configuration\n"));
2638 return (-1);
2639 }
2640
2641 verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree)
2642 == 0);
2643 verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &vers) == 0);
2644
2645 if (props) {
572e2857 2646 prop_flags_t flags = { .create = B_FALSE, .import = B_TRUE };
428870ff 2647 if ((zc_props = zpool_valid_proplist(hdl, zhp->zpool_name,
572e2857 2648 props, vers, flags, msg)) == NULL)
428870ff
BB		 2649 return (-1);
2650 }
2651
2652 if (nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
2653 &children) != 0) {
2654 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2655 "Source pool is missing vdev tree"));
2656 if (zc_props)
2657 nvlist_free(zc_props);
2658 return (-1);
2659 }
2660
2661 varray = zfs_alloc(hdl, children * sizeof (nvlist_t *));
2662 vcount = 0;
2663
2664 if (*newroot == NULL ||
2665 nvlist_lookup_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN,
2666 &newchild, &newchildren) != 0)
2667 newchildren = 0;
2668
2669 for (c = 0; c < children; c++) {
2670 uint64_t is_log = B_FALSE, is_hole = B_FALSE;
2671 char *type;
2672 nvlist_t **mchild, *vdev;
2673 uint_t mchildren;
2674 int entry;
2675
2676 /*
2677 * Unlike cache & spares, slogs are stored in the
2678 * ZPOOL_CONFIG_CHILDREN array. We filter them out here.
2679 */
2680 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
2681 &is_log);
2682 (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_HOLE,
2683 &is_hole);
2684 if (is_log || is_hole) {
2685 /*
2686 * Create a hole vdev and put it in the config.
2687 */
2688 if (nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) != 0)
2689 goto out;
2690 if (nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE,
2691 VDEV_TYPE_HOLE) != 0)
2692 goto out;
2693 if (nvlist_add_uint64(vdev, ZPOOL_CONFIG_IS_HOLE,
2694 1) != 0)
2695 goto out;
2696 if (lastlog == 0)
2697 lastlog = vcount;
2698 varray[vcount++] = vdev;
2699 continue;
2700 }
2701 lastlog = 0;
2702 verify(nvlist_lookup_string(child[c], ZPOOL_CONFIG_TYPE, &type)
2703 == 0);
2704 if (strcmp(type, VDEV_TYPE_MIRROR) != 0) {
2705 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2706 "Source pool must be composed only of mirrors\n"));
2707 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg);
2708 goto out;
2709 }
2710
2711 verify(nvlist_lookup_nvlist_array(child[c],
2712 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
2713
2714 /* find or add an entry for this top-level vdev */
2715 if (newchildren > 0 &&
2716 (entry = find_vdev_entry(zhp, mchild, mchildren,
2717 newchild, newchildren)) >= 0) {
2718 /* We found a disk that the user specified. */
2719 vdev = mchild[entry];
2720 ++found;
2721 } else {
2722 /* User didn't specify a disk for this vdev. */
2723 vdev = mchild[mchildren - 1];
2724 }
2725
2726 if (nvlist_dup(vdev, &varray[vcount++], 0) != 0)
2727 goto out;
2728 }
2729
2730 /* did we find every disk the user specified? */
2731 if (found != newchildren) {
2732 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "Device list must "
2733 "include at most one disk from each mirror"));
2734 retval = zfs_error(hdl, EZFS_INVALCONFIG, msg);
2735 goto out;
2736 }
2737
2738 /* Prepare the nvlist for populating. */
2739 if (*newroot == NULL) {
2740 if (nvlist_alloc(newroot, NV_UNIQUE_NAME, 0) != 0)
2741 goto out;
2742 freelist = B_TRUE;
2743 if (nvlist_add_string(*newroot, ZPOOL_CONFIG_TYPE,
2744 VDEV_TYPE_ROOT) != 0)
2745 goto out;
2746 } else {
2747 verify(nvlist_remove_all(*newroot, ZPOOL_CONFIG_CHILDREN) == 0);
2748 }
2749
2750 /* Add all the children we found */
2751 if (nvlist_add_nvlist_array(*newroot, ZPOOL_CONFIG_CHILDREN, varray,
2752 lastlog == 0 ? vcount : lastlog) != 0)
2753 goto out;
2754
2755 /*
2756 * If we're just doing a dry run, exit now with success.
2757 */
2758 if (flags.dryrun) {
2759 memory_err = B_FALSE;
2760 freelist = B_FALSE;
2761 goto out;
2762 }
2763
2764 /* now build up the config list & call the ioctl */
2765 if (nvlist_alloc(&newconfig, NV_UNIQUE_NAME, 0) != 0)
2766 goto out;
2767
2768 if (nvlist_add_nvlist(newconfig,
2769 ZPOOL_CONFIG_VDEV_TREE, *newroot) != 0 ||
2770 nvlist_add_string(newconfig,
2771 ZPOOL_CONFIG_POOL_NAME, newname) != 0 ||
2772 nvlist_add_uint64(newconfig, ZPOOL_CONFIG_VERSION, vers) != 0)
2773 goto out;
2774
2775 /*
2776 * The new pool is automatically part of the namespace unless we
2777 * explicitly export it.
2778 */
2779 if (!flags.import)
2780 zc.zc_cookie = ZPOOL_EXPORT_AFTER_SPLIT;
2781 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2782 (void) strlcpy(zc.zc_string, newname, sizeof (zc.zc_string));
2783 if (zcmd_write_conf_nvlist(hdl, &zc, newconfig) != 0)
2784 goto out;
2785 if (zc_props != NULL && zcmd_write_src_nvlist(hdl, &zc, zc_props) != 0)
2786 goto out;
2787
2788 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_SPLIT, &zc) != 0) {
2789 retval = zpool_standard_error(hdl, errno, msg);
2790 goto out;
2791 }
2792
2793 freelist = B_FALSE;
2794 memory_err = B_FALSE;
2795
2796out:
2797 if (varray != NULL) {
2798 int v;
2799
2800 for (v = 0; v < vcount; v++)
2801 nvlist_free(varray[v]);
2802 free(varray);
2803 }
2804 zcmd_free_nvlists(&zc);
2805 if (zc_props)
2806 nvlist_free(zc_props);
2807 if (newconfig)
2808 nvlist_free(newconfig);
2809 if (freelist) {
2810 nvlist_free(*newroot);
2811 *newroot = NULL;
2812 }
2813
2814 if (retval != 0)
2815 return (retval);
2816
2817 if (memory_err)
2818 return (no_memory(hdl));
2819
2820 return (0);
2821}
2822
34dc7c2f
BB		 2823/*
2824 * Remove the given device. Currently, this is supported only for hot spares
2825 * and level 2 cache devices.
2826 */
2827int
2828zpool_vdev_remove(zpool_handle_t *zhp, const char *path)
2829{
2830 zfs_cmd_t zc = { 0 };
2831 char msg[1024];
2832 nvlist_t *tgt;
428870ff 2833 boolean_t avail_spare, l2cache, islog;
34dc7c2f 2834 libzfs_handle_t *hdl = zhp->zpool_hdl;
428870ff 2835 uint64_t version;
34dc7c2f
BB		 2836
2837 (void) snprintf(msg, sizeof (msg),
2838 dgettext(TEXT_DOMAIN, "cannot remove %s"), path);
2839
2840 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
b128c09f 2841 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare, &l2cache,
428870ff 2842 &islog)) == 0)
34dc7c2f 2843 return (zfs_error(hdl, EZFS_NODEVICE, msg));
428870ff
BB		 2844 /*
2845 * XXX - this should just go away.
2846 */
2847 if (!avail_spare && !l2cache && !islog) {
34dc7c2f 2848 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
428870ff
BB		 2849 "only inactive hot spares, cache, top-level, "
2850 "or log devices can be removed"));
34dc7c2f
BB		 2851 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2852 }
2853
428870ff
BB		 2854 version = zpool_get_prop_int(zhp, ZPOOL_PROP_VERSION, NULL);
2855 if (islog && version < SPA_VERSION_HOLES) {
2856 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2857 "pool must be upgrade to support log removal"));
2858 return (zfs_error(hdl, EZFS_BADVERSION, msg));
2859 }
2860
34dc7c2f
BB		 2861 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID, &zc.zc_guid) == 0);
2862
2863 if (zfs_ioctl(hdl, ZFS_IOC_VDEV_REMOVE, &zc) == 0)
2864 return (0);
2865
2866 return (zpool_standard_error(hdl, errno, msg));
2867}
2868
2869/*
2870 * Clear the errors for the pool, or the particular device if specified.
2871 */
2872int
428870ff 2873zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl)
34dc7c2f
BB		 2874{
2875 zfs_cmd_t zc = { 0 };
2876 char msg[1024];
2877 nvlist_t *tgt;
428870ff 2878 zpool_rewind_policy_t policy;
34dc7c2f
BB		 2879 boolean_t avail_spare, l2cache;
2880 libzfs_handle_t *hdl = zhp->zpool_hdl;
428870ff 2881 nvlist_t *nvi = NULL;
572e2857 2882 int error;
34dc7c2f
BB		 2883
2884 if (path)
2885 (void) snprintf(msg, sizeof (msg),
2886 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"),
2887 path);
2888 else
2889 (void) snprintf(msg, sizeof (msg),
2890 dgettext(TEXT_DOMAIN, "cannot clear errors for %s"),
2891 zhp->zpool_name);
2892
2893 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2894 if (path) {
2895 if ((tgt = zpool_find_vdev(zhp, path, &avail_spare,
b128c09f 2896 &l2cache, NULL)) == 0)
34dc7c2f
BB		 2897 return (zfs_error(hdl, EZFS_NODEVICE, msg));
2898
2899 /*
2900 * Don't allow error clearing for hot spares. Do allow
2901 * error clearing for l2cache devices.
2902 */
2903 if (avail_spare)
2904 return (zfs_error(hdl, EZFS_ISSPARE, msg));
2905
2906 verify(nvlist_lookup_uint64(tgt, ZPOOL_CONFIG_GUID,
2907 &zc.zc_guid) == 0);
2908 }
2909
428870ff
BB		 2910 zpool_get_rewind_policy(rewindnvl, &policy);
2911 zc.zc_cookie = policy.zrp_request;
2912
572e2857 2913 if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0)
428870ff
BB		 2914 return (-1);
2915
572e2857 2916 if (zcmd_write_src_nvlist(hdl, &zc, rewindnvl) != 0)
428870ff
BB		 2917 return (-1);
2918
572e2857
BB		 2919 while ((error = zfs_ioctl(hdl, ZFS_IOC_CLEAR, &zc)) != 0 &&
2920 errno == ENOMEM) {
2921 if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
2922 zcmd_free_nvlists(&zc);
2923 return (-1);
2924 }
2925 }
2926
2927 if (!error || ((policy.zrp_request & ZPOOL_TRY_REWIND) &&
428870ff
BB		 2928 errno != EPERM && errno != EACCES)) {
2929 if (policy.zrp_request &
2930 (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) {
2931 (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi);
2932 zpool_rewind_exclaim(hdl, zc.zc_name,
2933 ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0),
2934 nvi);
2935 nvlist_free(nvi);
2936 }
2937 zcmd_free_nvlists(&zc);
34dc7c2f 2938 return (0);
428870ff 2939 }
34dc7c2f 2940
428870ff 2941 zcmd_free_nvlists(&zc);
34dc7c2f
BB		 2942 return (zpool_standard_error(hdl, errno, msg));
2943}
2944
2945/*
2946 * Similar to zpool_clear(), but takes a GUID (used by fmd).
2947 */
2948int
2949zpool_vdev_clear(zpool_handle_t *zhp, uint64_t guid)
2950{
2951 zfs_cmd_t zc = { 0 };
2952 char msg[1024];
2953 libzfs_handle_t *hdl = zhp->zpool_hdl;
2954
2955 (void) snprintf(msg, sizeof (msg),
2956 dgettext(TEXT_DOMAIN, "cannot clear errors for %llx"),
2957 guid);
2958
2959 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
2960 zc.zc_guid = guid;
428870ff 2961 zc.zc_cookie = ZPOOL_NO_REWIND;
34dc7c2f
BB		 2962
2963 if (ioctl(hdl->libzfs_fd, ZFS_IOC_CLEAR, &zc) == 0)
2964 return (0);
2965
2966 return (zpool_standard_error(hdl, errno, msg));
2967}
2968
34dc7c2f
BB		 2969/*
2970 * Convert from a devid string to a path.
2971 */
2972static char *
2973devid_to_path(char *devid_str)
2974{
2975 ddi_devid_t devid;
2976 char *minor;
2977 char *path;
2978 devid_nmlist_t *list = NULL;
2979 int ret;
2980
2981 if (devid_str_decode(devid_str, &devid, &minor) != 0)
2982 return (NULL);
2983
2984 ret = devid_deviceid_to_nmlist("/dev", devid, minor, &list);
2985
2986 devid_str_free(minor);
2987 devid_free(devid);
2988
2989 if (ret != 0)
2990 return (NULL);
2991
2992 if ((path = strdup(list[0].devname)) == NULL)
2993 return (NULL);
2994
2995 devid_free_nmlist(list);
2996
2997 return (path);
2998}
2999
3000/*
3001 * Convert from a path to a devid string.
3002 */
3003static char *
3004path_to_devid(const char *path)
3005{
3006 int fd;
3007 ddi_devid_t devid;
3008 char *minor, *ret;
3009
3010 if ((fd = open(path, O_RDONLY)) < 0)
3011 return (NULL);
3012
3013 minor = NULL;
3014 ret = NULL;
3015 if (devid_get(fd, &devid) == 0) {
3016 if (devid_get_minor_name(fd, &minor) == 0)
3017 ret = devid_str_encode(devid, minor);
3018 if (minor != NULL)
3019 devid_str_free(minor);
3020 devid_free(devid);
3021 }
3022 (void) close(fd);
3023
3024 return (ret);
3025}
3026
3027/*
3028 * Issue the necessary ioctl() to update the stored path value for the vdev. We
3029 * ignore any failure here, since a common case is for an unprivileged user to
3030 * type 'zpool status', and we'll display the correct information anyway.
3031 */
3032static void
3033set_path(zpool_handle_t *zhp, nvlist_t *nv, const char *path)
3034{
3035 zfs_cmd_t zc = { 0 };
3036
3037 (void) strncpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3038 (void) strncpy(zc.zc_value, path, sizeof (zc.zc_value));
3039 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
3040 &zc.zc_guid) == 0);
3041
3042 (void) ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_VDEV_SETPATH, &zc);
3043}
3044
3045/*
3046 * Given a vdev, return the name to display in iostat. If the vdev has a path,
3047 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type.
3048 * We also check if this is a whole disk, in which case we strip off the
3049 * trailing 's0' slice name.
3050 *
3051 * This routine is also responsible for identifying when disks have been
3052 * reconfigured in a new location. The kernel will have opened the device by
3053 * devid, but the path will still refer to the old location. To catch this, we
3054 * first do a path -> devid translation (which is fast for the common case). If
3055 * the devid matches, we're done. If not, we do a reverse devid -> path
3056 * translation and issue the appropriate ioctl() to update the path of the vdev.
3057 * If 'zhp' is NULL, then this is an exported pool, and we don't need to do any
3058 * of these checks.
3059 */
3060char *
428870ff
BB		 3061zpool_vdev_name(libzfs_handle_t *hdl, zpool_handle_t *zhp, nvlist_t *nv,
3062 boolean_t verbose)
34dc7c2f
BB		 3063{
3064 char *path, *devid;
3065 uint64_t value;
3066 char buf[64];
3067 vdev_stat_t *vs;
3068 uint_t vsc;
3069
3070 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT,
3071 &value) == 0) {
3072 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID,
3073 &value) == 0);
3074 (void) snprintf(buf, sizeof (buf), "%llu",
3075 (u_longlong_t)value);
3076 path = buf;
3077 } else if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0) {
3078
3079 /*
3080 * If the device is dead (faulted, offline, etc) then don't
3081 * bother opening it. Otherwise we may be forcing the user to
3082 * open a misbehaving device, which can have undesirable
3083 * effects.
3084 */
428870ff 3085 if ((nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
34dc7c2f
BB		 3086 (uint64_t **)&vs, &vsc) != 0 ||
3087 vs->vs_state >= VDEV_STATE_DEGRADED) &&
3088 zhp != NULL &&
3089 nvlist_lookup_string(nv, ZPOOL_CONFIG_DEVID, &devid) == 0) {
3090 /*
3091 * Determine if the current path is correct.
3092 */
3093 char *newdevid = path_to_devid(path);
3094
3095 if (newdevid == NULL ||
3096 strcmp(devid, newdevid) != 0) {
3097 char *newpath;
3098
3099 if ((newpath = devid_to_path(devid)) != NULL) {
3100 /*
3101 * Update the path appropriately.
3102 */
3103 set_path(zhp, nv, newpath);
3104 if (nvlist_add_string(nv,
3105 ZPOOL_CONFIG_PATH, newpath) == 0)
3106 verify(nvlist_lookup_string(nv,
3107 ZPOOL_CONFIG_PATH,
3108 &path) == 0);
3109 free(newpath);
3110 }
3111 }
3112
3113 if (newdevid)
3114 devid_str_free(newdevid);
3115 }
3116
3117 if (strncmp(path, "/dev/dsk/", 9) == 0)
3118 path += 9;
3119
3120 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
3121 &value) == 0 && value) {
428870ff 3122 int pathlen = strlen(path);
34dc7c2f 3123 char *tmp = zfs_strdup(hdl, path);
428870ff
BB		 3124
3125 /*
3126 * If it starts with c#, and ends with "s0", chop
3127 * the "s0" off, or if it ends with "s0/old", remove
3128 * the "s0" from the middle.
3129 */
3130 if (CTD_CHECK(tmp)) {
3131 if (strcmp(&tmp[pathlen - 2], "s0") == 0) {
3132 tmp[pathlen - 2] = '\0';
3133 } else if (pathlen > 6 &&
3134 strcmp(&tmp[pathlen - 6], "s0/old") == 0) {
3135 (void) strcpy(&tmp[pathlen - 6],
3136 "/old");
3137 }
3138 }
34dc7c2f
BB		 3139 return (tmp);
3140 }
3141 } else {
3142 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0);
3143
3144 /*
3145 * If it's a raidz device, we need to stick in the parity level.
3146 */
3147 if (strcmp(path, VDEV_TYPE_RAIDZ) == 0) {
3148 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY,
3149 &value) == 0);
3150 (void) snprintf(buf, sizeof (buf), "%s%llu", path,
3151 (u_longlong_t)value);
3152 path = buf;
3153 }
428870ff
BB		 3154
3155 /*
3156 * We identify each top-level vdev by using a <type-id>
3157 * naming convention.
3158 */
3159 if (verbose) {
3160 uint64_t id;
3161
3162 verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ID,
3163 &id) == 0);
3164 (void) snprintf(buf, sizeof (buf), "%s-%llu", path,
3165 (u_longlong_t)id);
3166 path = buf;
3167 }
34dc7c2f
BB		 3168 }
3169
3170 return (zfs_strdup(hdl, path));
3171}
3172
3173static int
3174zbookmark_compare(const void *a, const void *b)
3175{
3176 return (memcmp(a, b, sizeof (zbookmark_t)));
3177}
3178
3179/*
3180 * Retrieve the persistent error log, uniquify the members, and return to the
3181 * caller.
3182 */
3183int
3184zpool_get_errlog(zpool_handle_t *zhp, nvlist_t **nverrlistp)
3185{
3186 zfs_cmd_t zc = { 0 };
3187 uint64_t count;
3188 zbookmark_t *zb = NULL;
3189 int i;
3190
3191 /*
3192 * Retrieve the raw error list from the kernel. If the number of errors
3193 * has increased, allocate more space and continue until we get the
3194 * entire list.
3195 */
3196 verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_ERRCOUNT,
3197 &count) == 0);
3198 if (count == 0)
3199 return (0);
3200 if ((zc.zc_nvlist_dst = (uintptr_t)zfs_alloc(zhp->zpool_hdl,
3201 count * sizeof (zbookmark_t))) == (uintptr_t)NULL)
3202 return (-1);
3203 zc.zc_nvlist_dst_size = count;
3204 (void) strcpy(zc.zc_name, zhp->zpool_name);
3205 for (;;) {
3206 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_ERROR_LOG,
3207 &zc) != 0) {
3208 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3209 if (errno == ENOMEM) {
3210 count = zc.zc_nvlist_dst_size;
3211 if ((zc.zc_nvlist_dst = (uintptr_t)
3212 zfs_alloc(zhp->zpool_hdl, count *
3213 sizeof (zbookmark_t))) == (uintptr_t)NULL)
3214 return (-1);
3215 } else {
3216 return (-1);
3217 }
3218 } else {
3219 break;
3220 }
3221 }
3222
3223 /*
3224 * Sort the resulting bookmarks. This is a little confusing due to the
3225 * implementation of ZFS_IOC_ERROR_LOG. The bookmarks are copied last
3226 * to first, and 'zc_nvlist_dst_size' indicates the number of boomarks
3227 * _not_ copied as part of the process. So we point the start of our
3228 * array appropriate and decrement the total number of elements.
3229 */
3230 zb = ((zbookmark_t *)(uintptr_t)zc.zc_nvlist_dst) +
3231 zc.zc_nvlist_dst_size;
3232 count -= zc.zc_nvlist_dst_size;
3233
3234 qsort(zb, count, sizeof (zbookmark_t), zbookmark_compare);
3235
3236 verify(nvlist_alloc(nverrlistp, 0, KM_SLEEP) == 0);
3237
3238 /*
3239 * Fill in the nverrlistp with nvlist's of dataset and object numbers.
3240 */
3241 for (i = 0; i < count; i++) {
3242 nvlist_t *nv;
3243
3244 /* ignoring zb_blkid and zb_level for now */
3245 if (i > 0 && zb[i-1].zb_objset == zb[i].zb_objset &&
3246 zb[i-1].zb_object == zb[i].zb_object)
3247 continue;
3248
3249 if (nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) != 0)
3250 goto nomem;
3251 if (nvlist_add_uint64(nv, ZPOOL_ERR_DATASET,
3252 zb[i].zb_objset) != 0) {
3253 nvlist_free(nv);
3254 goto nomem;
3255 }
3256 if (nvlist_add_uint64(nv, ZPOOL_ERR_OBJECT,
3257 zb[i].zb_object) != 0) {
3258 nvlist_free(nv);
3259 goto nomem;
3260 }
3261 if (nvlist_add_nvlist(*nverrlistp, "ejk", nv) != 0) {
3262 nvlist_free(nv);
3263 goto nomem;
3264 }
3265 nvlist_free(nv);
3266 }
3267
3268 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3269 return (0);
3270
3271nomem:
3272 free((void *)(uintptr_t)zc.zc_nvlist_dst);
3273 return (no_memory(zhp->zpool_hdl));
3274}
3275
3276/*
3277 * Upgrade a ZFS pool to the latest on-disk version.
3278 */
3279int
3280zpool_upgrade(zpool_handle_t *zhp, uint64_t new_version)
3281{
3282 zfs_cmd_t zc = { 0 };
3283 libzfs_handle_t *hdl = zhp->zpool_hdl;
3284
3285 (void) strcpy(zc.zc_name, zhp->zpool_name);
3286 zc.zc_cookie = new_version;
3287
3288 if (zfs_ioctl(hdl, ZFS_IOC_POOL_UPGRADE, &zc) != 0)
3289 return (zpool_standard_error_fmt(hdl, errno,
3290 dgettext(TEXT_DOMAIN, "cannot upgrade '%s'"),
3291 zhp->zpool_name));
3292 return (0);
3293}
3294
3295void
3296zpool_set_history_str(const char *subcommand, int argc, char **argv,
3297 char *history_str)
3298{
3299 int i;
3300
3301 (void) strlcpy(history_str, subcommand, HIS_MAX_RECORD_LEN);
3302 for (i = 1; i < argc; i++) {
3303 if (strlen(history_str) + 1 + strlen(argv[i]) >
3304 HIS_MAX_RECORD_LEN)
3305 break;
3306 (void) strlcat(history_str, " ", HIS_MAX_RECORD_LEN);
3307 (void) strlcat(history_str, argv[i], HIS_MAX_RECORD_LEN);
3308 }
3309}
3310
3311/*
3312 * Stage command history for logging.
3313 */
3314int
3315zpool_stage_history(libzfs_handle_t *hdl, const char *history_str)
3316{
3317 if (history_str == NULL)
3318 return (EINVAL);
3319
3320 if (strlen(history_str) > HIS_MAX_RECORD_LEN)
3321 return (EINVAL);
3322
3323 if (hdl->libzfs_log_str != NULL)
3324 free(hdl->libzfs_log_str);
3325
3326 if ((hdl->libzfs_log_str = strdup(history_str)) == NULL)
3327 return (no_memory(hdl));
3328
3329 return (0);
3330}
3331
3332/*
3333 * Perform ioctl to get some command history of a pool.
3334 *
3335 * 'buf' is the buffer to fill up to 'len' bytes. 'off' is the
3336 * logical offset of the history buffer to start reading from.
3337 *
3338 * Upon return, 'off' is the next logical offset to read from and
3339 * 'len' is the actual amount of bytes read into 'buf'.
3340 */
3341static int
3342get_history(zpool_handle_t *zhp, char *buf, uint64_t *off, uint64_t *len)
3343{
3344 zfs_cmd_t zc = { 0 };
3345 libzfs_handle_t *hdl = zhp->zpool_hdl;
3346
3347 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3348
3349 zc.zc_history = (uint64_t)(uintptr_t)buf;
3350 zc.zc_history_len = *len;
3351 zc.zc_history_offset = *off;
3352
3353 if (ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_GET_HISTORY, &zc) != 0) {
3354 switch (errno) {
3355 case EPERM:
3356 return (zfs_error_fmt(hdl, EZFS_PERM,
3357 dgettext(TEXT_DOMAIN,
3358 "cannot show history for pool '%s'"),
3359 zhp->zpool_name));
3360 case ENOENT:
3361 return (zfs_error_fmt(hdl, EZFS_NOHISTORY,
3362 dgettext(TEXT_DOMAIN, "cannot get history for pool "
3363 "'%s'"), zhp->zpool_name));
3364 case ENOTSUP:
3365 return (zfs_error_fmt(hdl, EZFS_BADVERSION,
3366 dgettext(TEXT_DOMAIN, "cannot get history for pool "
3367 "'%s', pool must be upgraded"), zhp->zpool_name));
3368 default:
3369 return (zpool_standard_error_fmt(hdl, errno,
3370 dgettext(TEXT_DOMAIN,
3371 "cannot get history for '%s'"), zhp->zpool_name));
3372 }
3373 }
3374
3375 *len = zc.zc_history_len;
3376 *off = zc.zc_history_offset;
3377
3378 return (0);
3379}
3380
3381/*
3382 * Process the buffer of nvlists, unpacking and storing each nvlist record
3383 * into 'records'. 'leftover' is set to the number of bytes that weren't
3384 * processed as there wasn't a complete record.
3385 */
428870ff 3386int
34dc7c2f
BB		 3387zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover,
3388 nvlist_t ***records, uint_t *numrecords)
3389{
3390 uint64_t reclen;
3391 nvlist_t *nv;
3392 int i;
3393
3394 while (bytes_read > sizeof (reclen)) {
3395
3396 /* get length of packed record (stored as little endian) */
3397 for (i = 0, reclen = 0; i < sizeof (reclen); i++)
3398 reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i);
3399
3400 if (bytes_read < sizeof (reclen) + reclen)
3401 break;
3402
3403 /* unpack record */
3404 if (nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0) != 0)
3405 return (ENOMEM);
3406 bytes_read -= sizeof (reclen) + reclen;
3407 buf += sizeof (reclen) + reclen;
3408
3409 /* add record to nvlist array */
3410 (*numrecords)++;
3411 if (ISP2(*numrecords + 1)) {
3412 *records = realloc(*records,
3413 *numrecords * 2 * sizeof (nvlist_t *));
3414 }
3415 (*records)[*numrecords - 1] = nv;
3416 }
3417
3418 *leftover = bytes_read;
3419 return (0);
3420}
3421
3422#define HIS_BUF_LEN (128*1024)
3423
3424/*
3425 * Retrieve the command history of a pool.
3426 */
3427int
3428zpool_get_history(zpool_handle_t *zhp, nvlist_t **nvhisp)
3429{
3430 char buf[HIS_BUF_LEN];
3431 uint64_t off = 0;
3432 nvlist_t **records = NULL;
3433 uint_t numrecords = 0;
3434 int err, i;
3435
3436 do {
3437 uint64_t bytes_read = sizeof (buf);
3438 uint64_t leftover;
3439
3440 if ((err = get_history(zhp, buf, &off, &bytes_read)) != 0)
3441 break;
3442
3443 /* if nothing else was read in, we're at EOF, just return */
3444 if (!bytes_read)
3445 break;
3446
3447 if ((err = zpool_history_unpack(buf, bytes_read,
3448 &leftover, &records, &numrecords)) != 0)
3449 break;
3450 off -= leftover;
3451
3452 /* CONSTCOND */
3453 } while (1);
3454
3455 if (!err) {
3456 verify(nvlist_alloc(nvhisp, NV_UNIQUE_NAME, 0) == 0);
3457 verify(nvlist_add_nvlist_array(*nvhisp, ZPOOL_HIST_RECORD,
3458 records, numrecords) == 0);
3459 }
3460 for (i = 0; i < numrecords; i++)
3461 nvlist_free(records[i]);
3462 free(records);
3463
3464 return (err);
3465}
3466
3467void
3468zpool_obj_to_path(zpool_handle_t *zhp, uint64_t dsobj, uint64_t obj,
3469 char *pathname, size_t len)
3470{
3471 zfs_cmd_t zc = { 0 };
3472 boolean_t mounted = B_FALSE;
3473 char *mntpnt = NULL;
3474 char dsname[MAXNAMELEN];
3475
3476 if (dsobj == 0) {
3477 /* special case for the MOS */
3478 (void) snprintf(pathname, len, "<metadata>:<0x%llx>", obj);
3479 return;
3480 }
3481
3482 /* get the dataset's name */
3483 (void) strlcpy(zc.zc_name, zhp->zpool_name, sizeof (zc.zc_name));
3484 zc.zc_obj = dsobj;
3485 if (ioctl(zhp->zpool_hdl->libzfs_fd,
3486 ZFS_IOC_DSOBJ_TO_DSNAME, &zc) != 0) {
3487 /* just write out a path of two object numbers */
3488 (void) snprintf(pathname, len, "<0x%llx>:<0x%llx>",
3489 dsobj, obj);
3490 return;
3491 }
3492 (void) strlcpy(dsname, zc.zc_value, sizeof (dsname));
3493
3494 /* find out if the dataset is mounted */
3495 mounted = is_mounted(zhp->zpool_hdl, dsname, &mntpnt);
3496
3497 /* get the corrupted object's path */
3498 (void) strlcpy(zc.zc_name, dsname, sizeof (zc.zc_name));
3499 zc.zc_obj = obj;
3500 if (ioctl(zhp->zpool_hdl->libzfs_fd, ZFS_IOC_OBJ_TO_PATH,
3501 &zc) == 0) {
3502 if (mounted) {
3503 (void) snprintf(pathname, len, "%s%s", mntpnt,
3504 zc.zc_value);
3505 } else {
3506 (void) snprintf(pathname, len, "%s:%s",
3507 dsname, zc.zc_value);
3508 }
3509 } else {
3510 (void) snprintf(pathname, len, "%s:<0x%llx>", dsname, obj);
3511 }
3512 free(mntpnt);
3513}
3514
b128c09f
BB		 3515/*
3516 * Read the EFI label from the config, if a label does not exist then
3517 * pass back the error to the caller. If the caller has passed a non-NULL
3518 * diskaddr argument then we set it to the starting address of the EFI
3519 * partition.
3520 */
3521static int
3522read_efi_label(nvlist_t *config, diskaddr_t *sb)
3523{
3524 char *path;
3525 int fd;
3526 char diskname[MAXPATHLEN];
3527 int err = -1;
3528
3529 if (nvlist_lookup_string(config, ZPOOL_CONFIG_PATH, &path) != 0)
3530 return (err);
3531
3532 (void) snprintf(diskname, sizeof (diskname), "%s%s", RDISK_ROOT,
3533 strrchr(path, '/'));
3534 if ((fd = open(diskname, O_RDONLY|O_NDELAY)) >= 0) {
3535 struct dk_gpt *vtoc;
3536
3537 if ((err = efi_alloc_and_read(fd, &vtoc)) >= 0) {
3538 if (sb != NULL)
3539 *sb = vtoc->efi_parts[0].p_start;
3540 efi_free(vtoc);
3541 }
3542 (void) close(fd);
3543 }
3544 return (err);
3545}
3546
34dc7c2f
BB		 3547/*
3548 * determine where a partition starts on a disk in the current
3549 * configuration
3550 */
3551static diskaddr_t
3552find_start_block(nvlist_t *config)
3553{
3554 nvlist_t **child;
3555 uint_t c, children;
34dc7c2f 3556 diskaddr_t sb = MAXOFFSET_T;
34dc7c2f
BB		 3557 uint64_t wholedisk;
3558
3559 if (nvlist_lookup_nvlist_array(config,
3560 ZPOOL_CONFIG_CHILDREN, &child, &children) != 0) {
3561 if (nvlist_lookup_uint64(config,
3562 ZPOOL_CONFIG_WHOLE_DISK,
3563 &wholedisk) != 0 || !wholedisk) {
3564 return (MAXOFFSET_T);
3565 }
b128c09f
BB		 3566 if (read_efi_label(config, &sb) < 0)
3567 sb = MAXOFFSET_T;
34dc7c2f
BB		 3568 return (sb);
3569 }
3570
3571 for (c = 0; c < children; c++) {
3572 sb = find_start_block(child[c]);
3573 if (sb != MAXOFFSET_T) {
3574 return (sb);
3575 }
3576 }
3577 return (MAXOFFSET_T);
3578}
3579
3580/*
3581 * Label an individual disk. The name provided is the short name,
3582 * stripped of any leading /dev path.
3583 */
3584int
3585zpool_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, char *name)
3586{
3587 char path[MAXPATHLEN];
3588 struct dk_gpt *vtoc;
3589 int fd;
3590 size_t resv = EFI_MIN_RESV_SIZE;
3591 uint64_t slice_size;
3592 diskaddr_t start_block;
3593 char errbuf[1024];
3594
3595 /* prepare an error message just in case */
3596 (void) snprintf(errbuf, sizeof (errbuf),
3597 dgettext(TEXT_DOMAIN, "cannot label '%s'"), name);
3598
3599 if (zhp) {
3600 nvlist_t *nvroot;
3601
b128c09f
BB		 3602 if (pool_is_bootable(zhp)) {
3603 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3604 "EFI labeled devices are not supported on root "
3605 "pools."));
3606 return (zfs_error(hdl, EZFS_POOL_NOTSUP, errbuf));
3607 }
3608
34dc7c2f
BB		 3609 verify(nvlist_lookup_nvlist(zhp->zpool_config,
3610 ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
3611
3612 if (zhp->zpool_start_block == 0)
3613 start_block = find_start_block(nvroot);
3614 else
3615 start_block = zhp->zpool_start_block;
3616 zhp->zpool_start_block = start_block;
3617 } else {
3618 /* new pool */
3619 start_block = NEW_START_BLOCK;
3620 }
3621
3622 (void) snprintf(path, sizeof (path), "%s/%s%s", RDISK_ROOT, name,
3623 BACKUP_SLICE);
3624
3625 if ((fd = open(path, O_RDWR | O_NDELAY)) < 0) {
3626 /*
3627 * This shouldn't happen. We've long since verified that this
3628 * is a valid device.
3629 */
3630 zfs_error_aux(hdl,
3631 dgettext(TEXT_DOMAIN, "unable to open device"));
3632 return (zfs_error(hdl, EZFS_OPENFAILED, errbuf));
3633 }
3634
3635 if (efi_alloc_and_init(fd, EFI_NUMPAR, &vtoc) != 0) {
3636 /*
3637 * The only way this can fail is if we run out of memory, or we
3638 * were unable to read the disk's capacity
3639 */
3640 if (errno == ENOMEM)
3641 (void) no_memory(hdl);
3642
3643 (void) close(fd);
3644 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3645 "unable to read disk capacity"), name);
3646
3647 return (zfs_error(hdl, EZFS_NOCAP, errbuf));
3648 }
3649
3650 slice_size = vtoc->efi_last_u_lba + 1;
3651 slice_size -= EFI_MIN_RESV_SIZE;
3652 if (start_block == MAXOFFSET_T)
3653 start_block = NEW_START_BLOCK;
3654 slice_size -= start_block;
3655
3656 vtoc->efi_parts[0].p_start = start_block;
3657 vtoc->efi_parts[0].p_size = slice_size;
3658
3659 /*
3660 * Why we use V_USR: V_BACKUP confuses users, and is considered
3661 * disposable by some EFI utilities (since EFI doesn't have a backup
3662 * slice). V_UNASSIGNED is supposed to be used only for zero size
3663 * partitions, and efi_write() will fail if we use it. V_ROOT, V_BOOT,
3664 * etc. were all pretty specific. V_USR is as close to reality as we
3665 * can get, in the absence of V_OTHER.
3666 */
3667 vtoc->efi_parts[0].p_tag = V_USR;
3668 (void) strcpy(vtoc->efi_parts[0].p_name, "zfs");
3669
3670 vtoc->efi_parts[8].p_start = slice_size + start_block;
3671 vtoc->efi_parts[8].p_size = resv;
3672 vtoc->efi_parts[8].p_tag = V_RESERVED;
3673
3674 if (efi_write(fd, vtoc) != 0) {
3675 /*
3676 * Some block drivers (like pcata) may not support EFI
3677 * GPT labels. Print out a helpful error message dir-
3678 * ecting the user to manually label the disk and give
3679 * a specific slice.
3680 */
3681 (void) close(fd);
3682 efi_free(vtoc);
3683
3684 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3685 "try using fdisk(1M) and then provide a specific slice"));
3686 return (zfs_error(hdl, EZFS_LABELFAILED, errbuf));
3687 }
3688
3689 (void) close(fd);
3690 efi_free(vtoc);
3691 return (0);
3692}
3693
3694static boolean_t
3695supported_dump_vdev_type(libzfs_handle_t *hdl, nvlist_t *config, char *errbuf)
3696{
3697 char *type;
3698 nvlist_t **child;
3699 uint_t children, c;
3700
3701 verify(nvlist_lookup_string(config, ZPOOL_CONFIG_TYPE, &type) == 0);
3702 if (strcmp(type, VDEV_TYPE_RAIDZ) == 0 ||
3703 strcmp(type, VDEV_TYPE_FILE) == 0 ||
3704 strcmp(type, VDEV_TYPE_LOG) == 0 ||
428870ff 3705 strcmp(type, VDEV_TYPE_HOLE) == 0 ||
34dc7c2f
BB		 3706 strcmp(type, VDEV_TYPE_MISSING) == 0) {
3707 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3708 "vdev type '%s' is not supported"), type);
3709 (void) zfs_error(hdl, EZFS_VDEVNOTSUP, errbuf);
3710 return (B_FALSE);
3711 }
3712 if (nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_CHILDREN,
3713 &child, &children) == 0) {
3714 for (c = 0; c < children; c++) {
3715 if (!supported_dump_vdev_type(hdl, child[c], errbuf))
3716 return (B_FALSE);
3717 }
3718 }
3719 return (B_TRUE);
3720}
3721
3722/*
3723 * check if this zvol is allowable for use as a dump device; zero if
3724 * it is, > 0 if it isn't, < 0 if it isn't a zvol
3725 */
3726int
3727zvol_check_dump_config(char *arg)
3728{
3729 zpool_handle_t *zhp = NULL;
3730 nvlist_t *config, *nvroot;
3731 char *p, *volname;
3732 nvlist_t **top;
3733 uint_t toplevels;
3734 libzfs_handle_t *hdl;
3735 char errbuf[1024];
3736 char poolname[ZPOOL_MAXNAMELEN];
3737 int pathlen = strlen(ZVOL_FULL_DEV_DIR);
3738 int ret = 1;
3739
3740 if (strncmp(arg, ZVOL_FULL_DEV_DIR, pathlen)) {
3741 return (-1);
3742 }
3743
3744 (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3745 "dump is not supported on device '%s'"), arg);
3746
3747 if ((hdl = libzfs_init()) == NULL)
3748 return (1);
3749 libzfs_print_on_error(hdl, B_TRUE);
3750
3751 volname = arg + pathlen;
3752
3753 /* check the configuration of the pool */
3754 if ((p = strchr(volname, '/')) == NULL) {
3755 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3756 "malformed dataset name"));
3757 (void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
3758 return (1);
3759 } else if (p - volname >= ZFS_MAXNAMELEN) {
3760 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3761 "dataset name is too long"));
3762 (void) zfs_error(hdl, EZFS_NAMETOOLONG, errbuf);
3763 return (1);
3764 } else {
3765 (void) strncpy(poolname, volname, p - volname);
3766 poolname[p - volname] = '\0';
3767 }
3768
3769 if ((zhp = zpool_open(hdl, poolname)) == NULL) {
3770 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3771 "could not open pool '%s'"), poolname);
3772 (void) zfs_error(hdl, EZFS_OPENFAILED, errbuf);
3773 goto out;
3774 }
3775 config = zpool_get_config(zhp, NULL);
3776 if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
3777 &nvroot) != 0) {
3778 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3779 "could not obtain vdev configuration for '%s'"), poolname);
3780 (void) zfs_error(hdl, EZFS_INVALCONFIG, errbuf);
3781 goto out;
3782 }
3783
3784 verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN,
3785 &top, &toplevels) == 0);
3786 if (toplevels != 1) {
3787 zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3788 "'%s' has multiple top level vdevs"), poolname);
3789 (void) zfs_error(hdl, EZFS_DEVOVERFLOW, errbuf);
3790 goto out;
3791 }
3792
3793 if (!supported_dump_vdev_type(hdl, top[0], errbuf)) {
3794 goto out;
3795 }
3796 ret = 0;
3797
3798out:
3799 if (zhp)
3800 zpool_close(zhp);
3801 libzfs_fini(hdl);
3802 return (ret);
3803}
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