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.
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.
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]
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2012 by Delphix. All rights reserved.
25 * Copyright (c) 2012 DEY Storage Systems, Inc. All rights reserved.
26 * Copyright (c) 2012 Pawel Jakub Dawidek <pawel@dawidek.net>.
27 * Copyright 2012 Nexenta Systems, Inc. All rights reserved.
41 #include <sys/mntent.h>
42 #include <sys/mount.h>
51 #include <directory.h>
52 #endif /* HAVE_IDMAP */
54 #include <sys/dnode.h>
59 #include "zfs_namecheck.h"
61 #include "libzfs_impl.h"
62 #include "zfs_deleg.h"
64 static int zvol_create_link_common(libzfs_handle_t
*, const char *, int);
65 static int userquota_propname_decode(const char *propname
, boolean_t zoned
,
66 zfs_userquota_prop_t
*typep
, char *domain
, int domainlen
, uint64_t *ridp
);
69 * Given a single type (not a mask of types), return the type in a human
73 zfs_type_to_name(zfs_type_t type
)
76 case ZFS_TYPE_FILESYSTEM
:
77 return (dgettext(TEXT_DOMAIN
, "filesystem"));
78 case ZFS_TYPE_SNAPSHOT
:
79 return (dgettext(TEXT_DOMAIN
, "snapshot"));
81 return (dgettext(TEXT_DOMAIN
, "volume"));
90 * Validate a ZFS path. This is used even before trying to open the dataset, to
91 * provide a more meaningful error message. We call zfs_error_aux() to
92 * explain exactly why the name was not valid.
95 zfs_validate_name(libzfs_handle_t
*hdl
, const char *path
, int type
,
101 (void) zfs_prop_get_table();
102 if (dataset_namecheck(path
, &why
, &what
) != 0) {
105 case NAME_ERR_TOOLONG
:
106 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
107 "name is too long"));
110 case NAME_ERR_LEADING_SLASH
:
111 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
112 "leading slash in name"));
115 case NAME_ERR_EMPTY_COMPONENT
:
116 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
117 "empty component in name"));
120 case NAME_ERR_TRAILING_SLASH
:
121 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
122 "trailing slash in name"));
125 case NAME_ERR_INVALCHAR
:
127 dgettext(TEXT_DOMAIN
, "invalid character "
128 "'%c' in name"), what
);
131 case NAME_ERR_MULTIPLE_AT
:
132 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
133 "multiple '@' delimiters in name"));
136 case NAME_ERR_NOLETTER
:
137 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
138 "pool doesn't begin with a letter"));
141 case NAME_ERR_RESERVED
:
142 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
143 "name is reserved"));
146 case NAME_ERR_DISKLIKE
:
147 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
148 "reserved disk name"));
158 if (!(type
& ZFS_TYPE_SNAPSHOT
) && strchr(path
, '@') != NULL
) {
160 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
161 "snapshot delimiter '@' in filesystem name"));
165 if (type
== ZFS_TYPE_SNAPSHOT
&& strchr(path
, '@') == NULL
) {
167 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
168 "missing '@' delimiter in snapshot name"));
172 if (modifying
&& strchr(path
, '%') != NULL
) {
174 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
175 "invalid character %c in name"), '%');
183 zfs_name_valid(const char *name
, zfs_type_t type
)
185 if (type
== ZFS_TYPE_POOL
)
186 return (zpool_name_valid(NULL
, B_FALSE
, name
));
187 return (zfs_validate_name(NULL
, name
, type
, B_FALSE
));
191 * This function takes the raw DSL properties, and filters out the user-defined
192 * properties into a separate nvlist.
195 process_user_props(zfs_handle_t
*zhp
, nvlist_t
*props
)
197 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
202 if (nvlist_alloc(&nvl
, NV_UNIQUE_NAME
, 0) != 0) {
203 (void) no_memory(hdl
);
208 while ((elem
= nvlist_next_nvpair(props
, elem
)) != NULL
) {
209 if (!zfs_prop_user(nvpair_name(elem
)))
212 verify(nvpair_value_nvlist(elem
, &propval
) == 0);
213 if (nvlist_add_nvlist(nvl
, nvpair_name(elem
), propval
) != 0) {
215 (void) no_memory(hdl
);
223 static zpool_handle_t
*
224 zpool_add_handle(zfs_handle_t
*zhp
, const char *pool_name
)
226 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
229 if ((zph
= zpool_open_canfail(hdl
, pool_name
)) != NULL
) {
230 if (hdl
->libzfs_pool_handles
!= NULL
)
231 zph
->zpool_next
= hdl
->libzfs_pool_handles
;
232 hdl
->libzfs_pool_handles
= zph
;
237 static zpool_handle_t
*
238 zpool_find_handle(zfs_handle_t
*zhp
, const char *pool_name
, int len
)
240 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
241 zpool_handle_t
*zph
= hdl
->libzfs_pool_handles
;
243 while ((zph
!= NULL
) &&
244 (strncmp(pool_name
, zpool_get_name(zph
), len
) != 0))
245 zph
= zph
->zpool_next
;
250 * Returns a handle to the pool that contains the provided dataset.
251 * If a handle to that pool already exists then that handle is returned.
252 * Otherwise, a new handle is created and added to the list of handles.
254 static zpool_handle_t
*
255 zpool_handle(zfs_handle_t
*zhp
)
261 len
= strcspn(zhp
->zfs_name
, "/@") + 1;
262 pool_name
= zfs_alloc(zhp
->zfs_hdl
, len
);
263 (void) strlcpy(pool_name
, zhp
->zfs_name
, len
);
265 zph
= zpool_find_handle(zhp
, pool_name
, len
);
267 zph
= zpool_add_handle(zhp
, pool_name
);
274 zpool_free_handles(libzfs_handle_t
*hdl
)
276 zpool_handle_t
*next
, *zph
= hdl
->libzfs_pool_handles
;
278 while (zph
!= NULL
) {
279 next
= zph
->zpool_next
;
283 hdl
->libzfs_pool_handles
= NULL
;
287 * Utility function to gather stats (objset and zpl) for the given object.
290 get_stats_ioctl(zfs_handle_t
*zhp
, zfs_cmd_t
*zc
)
292 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
294 (void) strlcpy(zc
->zc_name
, zhp
->zfs_name
, sizeof (zc
->zc_name
));
296 while (ioctl(hdl
->libzfs_fd
, ZFS_IOC_OBJSET_STATS
, zc
) != 0) {
297 if (errno
== ENOMEM
) {
298 if (zcmd_expand_dst_nvlist(hdl
, zc
) != 0) {
309 * Utility function to get the received properties of the given object.
312 get_recvd_props_ioctl(zfs_handle_t
*zhp
)
314 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
315 nvlist_t
*recvdprops
;
316 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
319 if (zcmd_alloc_dst_nvlist(hdl
, &zc
, 0) != 0)
322 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
324 while (ioctl(hdl
->libzfs_fd
, ZFS_IOC_OBJSET_RECVD_PROPS
, &zc
) != 0) {
325 if (errno
== ENOMEM
) {
326 if (zcmd_expand_dst_nvlist(hdl
, &zc
) != 0) {
330 zcmd_free_nvlists(&zc
);
335 err
= zcmd_read_dst_nvlist(zhp
->zfs_hdl
, &zc
, &recvdprops
);
336 zcmd_free_nvlists(&zc
);
340 nvlist_free(zhp
->zfs_recvd_props
);
341 zhp
->zfs_recvd_props
= recvdprops
;
347 put_stats_zhdl(zfs_handle_t
*zhp
, zfs_cmd_t
*zc
)
349 nvlist_t
*allprops
, *userprops
;
351 zhp
->zfs_dmustats
= zc
->zc_objset_stats
; /* structure assignment */
353 if (zcmd_read_dst_nvlist(zhp
->zfs_hdl
, zc
, &allprops
) != 0) {
358 * XXX Why do we store the user props separately, in addition to
359 * storing them in zfs_props?
361 if ((userprops
= process_user_props(zhp
, allprops
)) == NULL
) {
362 nvlist_free(allprops
);
366 nvlist_free(zhp
->zfs_props
);
367 nvlist_free(zhp
->zfs_user_props
);
369 zhp
->zfs_props
= allprops
;
370 zhp
->zfs_user_props
= userprops
;
376 get_stats(zfs_handle_t
*zhp
)
379 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
381 if (zcmd_alloc_dst_nvlist(zhp
->zfs_hdl
, &zc
, 0) != 0)
383 if (get_stats_ioctl(zhp
, &zc
) != 0)
385 else if (put_stats_zhdl(zhp
, &zc
) != 0)
387 zcmd_free_nvlists(&zc
);
392 * Refresh the properties currently stored in the handle.
395 zfs_refresh_properties(zfs_handle_t
*zhp
)
397 (void) get_stats(zhp
);
401 * Makes a handle from the given dataset name. Used by zfs_open() and
402 * zfs_iter_* to create child handles on the fly.
405 make_dataset_handle_common(zfs_handle_t
*zhp
, zfs_cmd_t
*zc
)
407 if (put_stats_zhdl(zhp
, zc
) != 0)
411 * We've managed to open the dataset and gather statistics. Determine
412 * the high-level type.
414 if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZVOL
)
415 zhp
->zfs_head_type
= ZFS_TYPE_VOLUME
;
416 else if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZFS
)
417 zhp
->zfs_head_type
= ZFS_TYPE_FILESYSTEM
;
418 else if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_OTHER
)
419 return (-1); /* zpios' and other testing datasets are
420 of this type, ignore if encountered */
424 if (zhp
->zfs_dmustats
.dds_is_snapshot
)
425 zhp
->zfs_type
= ZFS_TYPE_SNAPSHOT
;
426 else if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZVOL
)
427 zhp
->zfs_type
= ZFS_TYPE_VOLUME
;
428 else if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZFS
)
429 zhp
->zfs_type
= ZFS_TYPE_FILESYSTEM
;
431 abort(); /* we should never see any other types */
433 if ((zhp
->zpool_hdl
= zpool_handle(zhp
)) == NULL
)
440 make_dataset_handle(libzfs_handle_t
*hdl
, const char *path
)
442 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
444 zfs_handle_t
*zhp
= calloc(sizeof (zfs_handle_t
), 1);
450 (void) strlcpy(zhp
->zfs_name
, path
, sizeof (zhp
->zfs_name
));
451 if (zcmd_alloc_dst_nvlist(hdl
, &zc
, 0) != 0) {
455 if (get_stats_ioctl(zhp
, &zc
) == -1) {
456 zcmd_free_nvlists(&zc
);
460 if (make_dataset_handle_common(zhp
, &zc
) == -1) {
464 zcmd_free_nvlists(&zc
);
469 make_dataset_handle_zc(libzfs_handle_t
*hdl
, zfs_cmd_t
*zc
)
471 zfs_handle_t
*zhp
= calloc(sizeof (zfs_handle_t
), 1);
477 (void) strlcpy(zhp
->zfs_name
, zc
->zc_name
, sizeof (zhp
->zfs_name
));
478 if (make_dataset_handle_common(zhp
, zc
) == -1) {
486 make_dataset_simple_handle_zc(zfs_handle_t
*pzhp
, zfs_cmd_t
*zc
)
488 zfs_handle_t
*zhp
= calloc(sizeof (zfs_handle_t
), 1);
493 zhp
->zfs_hdl
= pzhp
->zfs_hdl
;
494 (void) strlcpy(zhp
->zfs_name
, zc
->zc_name
, sizeof (zhp
->zfs_name
));
495 zhp
->zfs_head_type
= pzhp
->zfs_type
;
496 zhp
->zfs_type
= ZFS_TYPE_SNAPSHOT
;
497 zhp
->zpool_hdl
= zpool_handle(zhp
);
503 zfs_handle_dup(zfs_handle_t
*zhp_orig
)
505 zfs_handle_t
*zhp
= calloc(sizeof (zfs_handle_t
), 1);
510 zhp
->zfs_hdl
= zhp_orig
->zfs_hdl
;
511 zhp
->zpool_hdl
= zhp_orig
->zpool_hdl
;
512 (void) strlcpy(zhp
->zfs_name
, zhp_orig
->zfs_name
,
513 sizeof (zhp
->zfs_name
));
514 zhp
->zfs_type
= zhp_orig
->zfs_type
;
515 zhp
->zfs_head_type
= zhp_orig
->zfs_head_type
;
516 zhp
->zfs_dmustats
= zhp_orig
->zfs_dmustats
;
517 if (zhp_orig
->zfs_props
!= NULL
) {
518 if (nvlist_dup(zhp_orig
->zfs_props
, &zhp
->zfs_props
, 0) != 0) {
519 (void) no_memory(zhp
->zfs_hdl
);
524 if (zhp_orig
->zfs_user_props
!= NULL
) {
525 if (nvlist_dup(zhp_orig
->zfs_user_props
,
526 &zhp
->zfs_user_props
, 0) != 0) {
527 (void) no_memory(zhp
->zfs_hdl
);
532 if (zhp_orig
->zfs_recvd_props
!= NULL
) {
533 if (nvlist_dup(zhp_orig
->zfs_recvd_props
,
534 &zhp
->zfs_recvd_props
, 0)) {
535 (void) no_memory(zhp
->zfs_hdl
);
540 zhp
->zfs_mntcheck
= zhp_orig
->zfs_mntcheck
;
541 if (zhp_orig
->zfs_mntopts
!= NULL
) {
542 zhp
->zfs_mntopts
= zfs_strdup(zhp_orig
->zfs_hdl
,
543 zhp_orig
->zfs_mntopts
);
545 zhp
->zfs_props_table
= zhp_orig
->zfs_props_table
;
550 * Opens the given snapshot, filesystem, or volume. The 'types'
551 * argument is a mask of acceptable types. The function will print an
552 * appropriate error message and return NULL if it can't be opened.
555 zfs_open(libzfs_handle_t
*hdl
, const char *path
, int types
)
560 (void) snprintf(errbuf
, sizeof (errbuf
),
561 dgettext(TEXT_DOMAIN
, "cannot open '%s'"), path
);
564 * Validate the name before we even try to open it.
566 if (!zfs_validate_name(hdl
, path
, ZFS_TYPE_DATASET
, B_FALSE
)) {
567 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
568 "invalid dataset name"));
569 (void) zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
);
574 * Try to get stats for the dataset, which will tell us if it exists.
577 if ((zhp
= make_dataset_handle(hdl
, path
)) == NULL
) {
578 (void) zfs_standard_error(hdl
, errno
, errbuf
);
582 if (!(types
& zhp
->zfs_type
)) {
583 (void) zfs_error(hdl
, EZFS_BADTYPE
, errbuf
);
592 * Release a ZFS handle. Nothing to do but free the associated memory.
595 zfs_close(zfs_handle_t
*zhp
)
597 if (zhp
->zfs_mntopts
)
598 free(zhp
->zfs_mntopts
);
599 nvlist_free(zhp
->zfs_props
);
600 nvlist_free(zhp
->zfs_user_props
);
601 nvlist_free(zhp
->zfs_recvd_props
);
605 typedef struct mnttab_node
{
606 struct mnttab mtn_mt
;
611 libzfs_mnttab_cache_compare(const void *arg1
, const void *arg2
)
613 const mnttab_node_t
*mtn1
= arg1
;
614 const mnttab_node_t
*mtn2
= arg2
;
617 rv
= strcmp(mtn1
->mtn_mt
.mnt_special
, mtn2
->mtn_mt
.mnt_special
);
621 return (rv
> 0 ? 1 : -1);
625 libzfs_mnttab_init(libzfs_handle_t
*hdl
)
627 assert(avl_numnodes(&hdl
->libzfs_mnttab_cache
) == 0);
628 avl_create(&hdl
->libzfs_mnttab_cache
, libzfs_mnttab_cache_compare
,
629 sizeof (mnttab_node_t
), offsetof(mnttab_node_t
, mtn_node
));
633 libzfs_mnttab_update(libzfs_handle_t
*hdl
)
637 /* Reopen MNTTAB to prevent reading stale data from open file */
638 if (freopen(MNTTAB
, "r", hdl
->libzfs_mnttab
) == NULL
)
641 while (getmntent(hdl
->libzfs_mnttab
, &entry
) == 0) {
644 if (strcmp(entry
.mnt_fstype
, MNTTYPE_ZFS
) != 0)
646 mtn
= zfs_alloc(hdl
, sizeof (mnttab_node_t
));
647 mtn
->mtn_mt
.mnt_special
= zfs_strdup(hdl
, entry
.mnt_special
);
648 mtn
->mtn_mt
.mnt_mountp
= zfs_strdup(hdl
, entry
.mnt_mountp
);
649 mtn
->mtn_mt
.mnt_fstype
= zfs_strdup(hdl
, entry
.mnt_fstype
);
650 mtn
->mtn_mt
.mnt_mntopts
= zfs_strdup(hdl
, entry
.mnt_mntopts
);
651 avl_add(&hdl
->libzfs_mnttab_cache
, mtn
);
658 libzfs_mnttab_fini(libzfs_handle_t
*hdl
)
663 while ((mtn
= avl_destroy_nodes(&hdl
->libzfs_mnttab_cache
, &cookie
))) {
664 free(mtn
->mtn_mt
.mnt_special
);
665 free(mtn
->mtn_mt
.mnt_mountp
);
666 free(mtn
->mtn_mt
.mnt_fstype
);
667 free(mtn
->mtn_mt
.mnt_mntopts
);
670 avl_destroy(&hdl
->libzfs_mnttab_cache
);
674 libzfs_mnttab_cache(libzfs_handle_t
*hdl
, boolean_t enable
)
676 hdl
->libzfs_mnttab_enable
= enable
;
680 libzfs_mnttab_find(libzfs_handle_t
*hdl
, const char *fsname
,
681 struct mnttab
*entry
)
687 if (!hdl
->libzfs_mnttab_enable
) {
688 struct mnttab srch
= { 0 };
690 if (avl_numnodes(&hdl
->libzfs_mnttab_cache
))
691 libzfs_mnttab_fini(hdl
);
693 /* Reopen MNTTAB to prevent reading stale data from open file */
694 if (freopen(MNTTAB
, "r", hdl
->libzfs_mnttab
) == NULL
)
697 srch
.mnt_special
= (char *)fsname
;
698 srch
.mnt_fstype
= MNTTYPE_ZFS
;
699 if (getmntany(hdl
->libzfs_mnttab
, entry
, &srch
) == 0)
705 if (avl_numnodes(&hdl
->libzfs_mnttab_cache
) == 0)
706 if ((error
= libzfs_mnttab_update(hdl
)) != 0)
709 find
.mtn_mt
.mnt_special
= (char *)fsname
;
710 mtn
= avl_find(&hdl
->libzfs_mnttab_cache
, &find
, NULL
);
712 *entry
= mtn
->mtn_mt
;
719 libzfs_mnttab_add(libzfs_handle_t
*hdl
, const char *special
,
720 const char *mountp
, const char *mntopts
)
724 if (avl_numnodes(&hdl
->libzfs_mnttab_cache
) == 0)
726 mtn
= zfs_alloc(hdl
, sizeof (mnttab_node_t
));
727 mtn
->mtn_mt
.mnt_special
= zfs_strdup(hdl
, special
);
728 mtn
->mtn_mt
.mnt_mountp
= zfs_strdup(hdl
, mountp
);
729 mtn
->mtn_mt
.mnt_fstype
= zfs_strdup(hdl
, MNTTYPE_ZFS
);
730 mtn
->mtn_mt
.mnt_mntopts
= zfs_strdup(hdl
, mntopts
);
731 avl_add(&hdl
->libzfs_mnttab_cache
, mtn
);
735 libzfs_mnttab_remove(libzfs_handle_t
*hdl
, const char *fsname
)
740 find
.mtn_mt
.mnt_special
= (char *)fsname
;
741 if ((ret
= avl_find(&hdl
->libzfs_mnttab_cache
, (void *)&find
, NULL
))) {
742 avl_remove(&hdl
->libzfs_mnttab_cache
, ret
);
743 free(ret
->mtn_mt
.mnt_special
);
744 free(ret
->mtn_mt
.mnt_mountp
);
745 free(ret
->mtn_mt
.mnt_fstype
);
746 free(ret
->mtn_mt
.mnt_mntopts
);
752 zfs_spa_version(zfs_handle_t
*zhp
, int *spa_version
)
754 zpool_handle_t
*zpool_handle
= zhp
->zpool_hdl
;
756 if (zpool_handle
== NULL
)
759 *spa_version
= zpool_get_prop_int(zpool_handle
,
760 ZPOOL_PROP_VERSION
, NULL
);
765 * The choice of reservation property depends on the SPA version.
768 zfs_which_resv_prop(zfs_handle_t
*zhp
, zfs_prop_t
*resv_prop
)
772 if (zfs_spa_version(zhp
, &spa_version
) < 0)
775 if (spa_version
>= SPA_VERSION_REFRESERVATION
)
776 *resv_prop
= ZFS_PROP_REFRESERVATION
;
778 *resv_prop
= ZFS_PROP_RESERVATION
;
784 * Given an nvlist of properties to set, validates that they are correct, and
785 * parses any numeric properties (index, boolean, etc) if they are specified as
789 zfs_valid_proplist(libzfs_handle_t
*hdl
, zfs_type_t type
, nvlist_t
*nvl
,
790 uint64_t zoned
, zfs_handle_t
*zhp
, const char *errbuf
)
797 int chosen_normal
= -1;
800 if (nvlist_alloc(&ret
, NV_UNIQUE_NAME
, 0) != 0) {
801 (void) no_memory(hdl
);
806 * Make sure this property is valid and applies to this type.
810 while ((elem
= nvlist_next_nvpair(nvl
, elem
)) != NULL
) {
811 const char *propname
= nvpair_name(elem
);
813 prop
= zfs_name_to_prop(propname
);
814 if (prop
== ZPROP_INVAL
&& zfs_prop_user(propname
)) {
816 * This is a user property: make sure it's a
817 * string, and that it's less than ZAP_MAXNAMELEN.
819 if (nvpair_type(elem
) != DATA_TYPE_STRING
) {
820 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
821 "'%s' must be a string"), propname
);
822 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
826 if (strlen(nvpair_name(elem
)) >= ZAP_MAXNAMELEN
) {
827 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
828 "property name '%s' is too long"),
830 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
834 (void) nvpair_value_string(elem
, &strval
);
835 if (nvlist_add_string(ret
, propname
, strval
) != 0) {
836 (void) no_memory(hdl
);
843 * Currently, only user properties can be modified on
846 if (type
== ZFS_TYPE_SNAPSHOT
) {
847 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
848 "this property can not be modified for snapshots"));
849 (void) zfs_error(hdl
, EZFS_PROPTYPE
, errbuf
);
853 if (prop
== ZPROP_INVAL
&& zfs_prop_userquota(propname
)) {
854 zfs_userquota_prop_t uqtype
;
855 char newpropname
[128];
860 if (userquota_propname_decode(propname
, zoned
,
861 &uqtype
, domain
, sizeof (domain
), &rid
) != 0) {
863 dgettext(TEXT_DOMAIN
,
864 "'%s' has an invalid user/group name"),
866 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
870 if (uqtype
!= ZFS_PROP_USERQUOTA
&&
871 uqtype
!= ZFS_PROP_GROUPQUOTA
) {
873 dgettext(TEXT_DOMAIN
, "'%s' is readonly"),
875 (void) zfs_error(hdl
, EZFS_PROPREADONLY
,
880 if (nvpair_type(elem
) == DATA_TYPE_STRING
) {
881 (void) nvpair_value_string(elem
, &strval
);
882 if (strcmp(strval
, "none") == 0) {
884 } else if (zfs_nicestrtonum(hdl
,
885 strval
, &intval
) != 0) {
886 (void) zfs_error(hdl
,
887 EZFS_BADPROP
, errbuf
);
890 } else if (nvpair_type(elem
) ==
892 (void) nvpair_value_uint64(elem
, &intval
);
894 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
895 "use 'none' to disable "
896 "userquota/groupquota"));
900 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
901 "'%s' must be a number"), propname
);
902 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
907 * Encode the prop name as
908 * userquota@<hex-rid>-domain, to make it easy
909 * for the kernel to decode.
911 (void) snprintf(newpropname
, sizeof (newpropname
),
912 "%s%llx-%s", zfs_userquota_prop_prefixes
[uqtype
],
913 (longlong_t
)rid
, domain
);
917 if (nvlist_add_uint64_array(ret
, newpropname
,
919 (void) no_memory(hdl
);
923 } else if (prop
== ZPROP_INVAL
&& zfs_prop_written(propname
)) {
924 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
927 (void) zfs_error(hdl
, EZFS_PROPREADONLY
, errbuf
);
931 if (prop
== ZPROP_INVAL
) {
932 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
933 "invalid property '%s'"), propname
);
934 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
938 if (!zfs_prop_valid_for_type(prop
, type
)) {
940 dgettext(TEXT_DOMAIN
, "'%s' does not "
941 "apply to datasets of this type"), propname
);
942 (void) zfs_error(hdl
, EZFS_PROPTYPE
, errbuf
);
946 if (zfs_prop_readonly(prop
) &&
947 (!zfs_prop_setonce(prop
) || zhp
!= NULL
)) {
949 dgettext(TEXT_DOMAIN
, "'%s' is readonly"),
951 (void) zfs_error(hdl
, EZFS_PROPREADONLY
, errbuf
);
955 if (zprop_parse_value(hdl
, elem
, prop
, type
, ret
,
956 &strval
, &intval
, errbuf
) != 0)
960 * Perform some additional checks for specific properties.
963 case ZFS_PROP_VERSION
:
969 version
= zfs_prop_get_int(zhp
, ZFS_PROP_VERSION
);
970 if (intval
< version
) {
971 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
972 "Can not downgrade; already at version %u"),
974 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
980 case ZFS_PROP_RECORDSIZE
:
981 case ZFS_PROP_VOLBLOCKSIZE
:
982 /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */
983 if (intval
< SPA_MINBLOCKSIZE
||
984 intval
> SPA_MAXBLOCKSIZE
|| !ISP2(intval
)) {
985 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
986 "'%s' must be power of 2 from %u "
988 (uint_t
)SPA_MINBLOCKSIZE
,
989 (uint_t
)SPA_MAXBLOCKSIZE
>> 10);
990 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
995 case ZFS_PROP_MLSLABEL
:
999 * Verify the mlslabel string and convert to
1000 * internal hex label string.
1004 char *hex
= NULL
; /* internal label string */
1006 /* Default value is already OK. */
1007 if (strcasecmp(strval
, ZFS_MLSLABEL_DEFAULT
) == 0)
1010 /* Verify the label can be converted to binary form */
1011 if (((new_sl
= m_label_alloc(MAC_LABEL
)) == NULL
) ||
1012 (str_to_label(strval
, &new_sl
, MAC_LABEL
,
1013 L_NO_CORRECTION
, NULL
) == -1)) {
1017 /* Now translate to hex internal label string */
1018 if (label_to_str(new_sl
, &hex
, M_INTERNAL
,
1024 m_label_free(new_sl
);
1026 /* If string is already in internal form, we're done. */
1027 if (strcmp(strval
, hex
) == 0) {
1032 /* Replace the label string with the internal form. */
1033 (void) nvlist_remove(ret
, zfs_prop_to_name(prop
),
1035 verify(nvlist_add_string(ret
, zfs_prop_to_name(prop
),
1042 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1043 "invalid mlslabel '%s'"), strval
);
1044 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
1045 m_label_free(new_sl
); /* OK if null */
1048 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1049 "mlslabels are unsupported"));
1050 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
1052 #endif /* HAVE_MLSLABEL */
1055 case ZFS_PROP_MOUNTPOINT
:
1057 namecheck_err_t why
;
1059 if (strcmp(strval
, ZFS_MOUNTPOINT_NONE
) == 0 ||
1060 strcmp(strval
, ZFS_MOUNTPOINT_LEGACY
) == 0)
1063 if (mountpoint_namecheck(strval
, &why
)) {
1065 case NAME_ERR_LEADING_SLASH
:
1067 dgettext(TEXT_DOMAIN
,
1068 "'%s' must be an absolute path, "
1069 "'none', or 'legacy'"), propname
);
1071 case NAME_ERR_TOOLONG
:
1073 dgettext(TEXT_DOMAIN
,
1074 "component of '%s' is too long"),
1080 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
1087 case ZFS_PROP_SHARESMB
:
1088 case ZFS_PROP_SHARENFS
:
1090 * For the mountpoint and sharenfs or sharesmb
1091 * properties, check if it can be set in a
1092 * global/non-global zone based on
1093 * the zoned property value:
1095 * global zone non-global zone
1096 * --------------------------------------------------
1097 * zoned=on mountpoint (no) mountpoint (yes)
1098 * sharenfs (no) sharenfs (no)
1099 * sharesmb (no) sharesmb (no)
1101 * zoned=off mountpoint (yes) N/A
1106 if (getzoneid() == GLOBAL_ZONEID
) {
1107 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1108 "'%s' cannot be set on "
1109 "dataset in a non-global zone"),
1111 (void) zfs_error(hdl
, EZFS_ZONED
,
1114 } else if (prop
== ZFS_PROP_SHARENFS
||
1115 prop
== ZFS_PROP_SHARESMB
) {
1116 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1117 "'%s' cannot be set in "
1118 "a non-global zone"), propname
);
1119 (void) zfs_error(hdl
, EZFS_ZONED
,
1123 } else if (getzoneid() != GLOBAL_ZONEID
) {
1125 * If zoned property is 'off', this must be in
1126 * a global zone. If not, something is wrong.
1128 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1129 "'%s' cannot be set while dataset "
1130 "'zoned' property is set"), propname
);
1131 (void) zfs_error(hdl
, EZFS_ZONED
, errbuf
);
1136 * At this point, it is legitimate to set the
1137 * property. Now we want to make sure that the
1138 * property value is valid if it is sharenfs.
1140 if ((prop
== ZFS_PROP_SHARENFS
||
1141 prop
== ZFS_PROP_SHARESMB
) &&
1142 strcmp(strval
, "on") != 0 &&
1143 strcmp(strval
, "off") != 0) {
1144 zfs_share_proto_t proto
;
1146 if (prop
== ZFS_PROP_SHARESMB
)
1152 * Must be an valid sharing protocol
1153 * option string so init the libshare
1154 * in order to enable the parser and
1155 * then parse the options. We use the
1156 * control API since we don't care about
1157 * the current configuration and don't
1158 * want the overhead of loading it
1159 * until we actually do something.
1162 if (zfs_init_libshare(hdl
,
1163 SA_INIT_CONTROL_API
) != SA_OK
) {
1165 * An error occurred so we can't do
1168 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1169 "'%s' cannot be set: problem "
1170 "in share initialization"),
1172 (void) zfs_error(hdl
, EZFS_BADPROP
,
1177 if (zfs_parse_options(strval
, proto
) != SA_OK
) {
1179 * There was an error in parsing so
1180 * deal with it by issuing an error
1181 * message and leaving after
1182 * uninitializing the the libshare
1185 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1186 "'%s' cannot be set to invalid "
1187 "options"), propname
);
1188 (void) zfs_error(hdl
, EZFS_BADPROP
,
1190 zfs_uninit_libshare(hdl
);
1193 zfs_uninit_libshare(hdl
);
1197 case ZFS_PROP_UTF8ONLY
:
1198 chosen_utf
= (int)intval
;
1200 case ZFS_PROP_NORMALIZE
:
1201 chosen_normal
= (int)intval
;
1208 * For changes to existing volumes, we have some additional
1209 * checks to enforce.
1211 if (type
== ZFS_TYPE_VOLUME
&& zhp
!= NULL
) {
1212 uint64_t volsize
= zfs_prop_get_int(zhp
,
1214 uint64_t blocksize
= zfs_prop_get_int(zhp
,
1215 ZFS_PROP_VOLBLOCKSIZE
);
1219 case ZFS_PROP_RESERVATION
:
1220 case ZFS_PROP_REFRESERVATION
:
1221 if (intval
> volsize
) {
1222 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1223 "'%s' is greater than current "
1224 "volume size"), propname
);
1225 (void) zfs_error(hdl
, EZFS_BADPROP
,
1231 case ZFS_PROP_VOLSIZE
:
1232 if (intval
% blocksize
!= 0) {
1233 zfs_nicenum(blocksize
, buf
,
1235 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1236 "'%s' must be a multiple of "
1237 "volume block size (%s)"),
1239 (void) zfs_error(hdl
, EZFS_BADPROP
,
1245 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1246 "'%s' cannot be zero"),
1248 (void) zfs_error(hdl
, EZFS_BADPROP
,
1260 * If normalization was chosen, but no UTF8 choice was made,
1261 * enforce rejection of non-UTF8 names.
1263 * If normalization was chosen, but rejecting non-UTF8 names
1264 * was explicitly not chosen, it is an error.
1266 if (chosen_normal
> 0 && chosen_utf
< 0) {
1267 if (nvlist_add_uint64(ret
,
1268 zfs_prop_to_name(ZFS_PROP_UTF8ONLY
), 1) != 0) {
1269 (void) no_memory(hdl
);
1272 } else if (chosen_normal
> 0 && chosen_utf
== 0) {
1273 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1274 "'%s' must be set 'on' if normalization chosen"),
1275 zfs_prop_to_name(ZFS_PROP_UTF8ONLY
));
1276 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
1287 zfs_add_synthetic_resv(zfs_handle_t
*zhp
, nvlist_t
*nvl
)
1289 uint64_t old_volsize
;
1290 uint64_t new_volsize
;
1291 uint64_t old_reservation
;
1292 uint64_t new_reservation
;
1293 zfs_prop_t resv_prop
;
1296 * If this is an existing volume, and someone is setting the volsize,
1297 * make sure that it matches the reservation, or add it if necessary.
1299 old_volsize
= zfs_prop_get_int(zhp
, ZFS_PROP_VOLSIZE
);
1300 if (zfs_which_resv_prop(zhp
, &resv_prop
) < 0)
1302 old_reservation
= zfs_prop_get_int(zhp
, resv_prop
);
1303 if ((zvol_volsize_to_reservation(old_volsize
, zhp
->zfs_props
) !=
1304 old_reservation
) || nvlist_lookup_uint64(nvl
,
1305 zfs_prop_to_name(resv_prop
), &new_reservation
) != ENOENT
) {
1308 if (nvlist_lookup_uint64(nvl
, zfs_prop_to_name(ZFS_PROP_VOLSIZE
),
1311 new_reservation
= zvol_volsize_to_reservation(new_volsize
,
1313 if (nvlist_add_uint64(nvl
, zfs_prop_to_name(resv_prop
),
1314 new_reservation
) != 0) {
1315 (void) no_memory(zhp
->zfs_hdl
);
1322 zfs_setprop_error(libzfs_handle_t
*hdl
, zfs_prop_t prop
, int err
,
1329 * For quotas and reservations, ENOSPC indicates
1330 * something different; setting a quota or reservation
1331 * doesn't use any disk space.
1334 case ZFS_PROP_QUOTA
:
1335 case ZFS_PROP_REFQUOTA
:
1336 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1337 "size is less than current used or "
1339 (void) zfs_error(hdl
, EZFS_PROPSPACE
, errbuf
);
1342 case ZFS_PROP_RESERVATION
:
1343 case ZFS_PROP_REFRESERVATION
:
1344 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1345 "size is greater than available space"));
1346 (void) zfs_error(hdl
, EZFS_PROPSPACE
, errbuf
);
1350 (void) zfs_standard_error(hdl
, err
, errbuf
);
1356 (void) zfs_standard_error(hdl
, EBUSY
, errbuf
);
1360 (void) zfs_error(hdl
, EZFS_DSREADONLY
, errbuf
);
1364 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1365 "pool and or dataset must be upgraded to set this "
1366 "property or value"));
1367 (void) zfs_error(hdl
, EZFS_BADVERSION
, errbuf
);
1371 if (prop
== ZFS_PROP_COMPRESSION
) {
1372 (void) zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1373 "property setting is not allowed on "
1374 "bootable datasets"));
1375 (void) zfs_error(hdl
, EZFS_NOTSUP
, errbuf
);
1377 (void) zfs_standard_error(hdl
, err
, errbuf
);
1382 if (prop
== ZPROP_INVAL
) {
1383 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
1385 (void) zfs_standard_error(hdl
, err
, errbuf
);
1391 * This platform can't address a volume this big.
1394 if (prop
== ZFS_PROP_VOLSIZE
) {
1395 (void) zfs_error(hdl
, EZFS_VOLTOOBIG
, errbuf
);
1401 (void) zfs_standard_error(hdl
, err
, errbuf
);
1406 zfs_is_namespace_prop(zfs_prop_t prop
)
1410 case ZFS_PROP_ATIME
:
1411 case ZFS_PROP_DEVICES
:
1413 case ZFS_PROP_SETUID
:
1414 case ZFS_PROP_READONLY
:
1415 case ZFS_PROP_XATTR
:
1416 case ZFS_PROP_NBMAND
:
1425 * Given a property name and value, set the property for the given dataset.
1428 zfs_prop_set(zfs_handle_t
*zhp
, const char *propname
, const char *propval
)
1430 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
1432 prop_changelist_t
*cl
= NULL
;
1434 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
1435 nvlist_t
*nvl
= NULL
, *realprops
;
1437 boolean_t do_prefix
;
1441 (void) snprintf(errbuf
, sizeof (errbuf
),
1442 dgettext(TEXT_DOMAIN
, "cannot set property for '%s'"),
1445 if (nvlist_alloc(&nvl
, NV_UNIQUE_NAME
, 0) != 0 ||
1446 nvlist_add_string(nvl
, propname
, propval
) != 0) {
1447 (void) no_memory(hdl
);
1451 if ((realprops
= zfs_valid_proplist(hdl
, zhp
->zfs_type
, nvl
,
1452 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
), zhp
, errbuf
)) == NULL
)
1458 prop
= zfs_name_to_prop(propname
);
1460 if (prop
== ZFS_PROP_VOLSIZE
) {
1461 if ((added_resv
= zfs_add_synthetic_resv(zhp
, nvl
)) == -1)
1465 if ((cl
= changelist_gather(zhp
, prop
, 0, 0)) == NULL
)
1468 if (prop
== ZFS_PROP_MOUNTPOINT
&& changelist_haszonedchild(cl
)) {
1469 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1470 "child dataset with inherited mountpoint is used "
1471 "in a non-global zone"));
1472 ret
= zfs_error(hdl
, EZFS_ZONED
, errbuf
);
1477 * If the dataset's canmount property is being set to noauto,
1478 * then we want to prevent unmounting & remounting it.
1480 do_prefix
= !((prop
== ZFS_PROP_CANMOUNT
) &&
1481 (zprop_string_to_index(prop
, propval
, &idx
,
1482 ZFS_TYPE_DATASET
) == 0) && (idx
== ZFS_CANMOUNT_NOAUTO
));
1484 if (do_prefix
&& (ret
= changelist_prefix(cl
)) != 0)
1488 * Execute the corresponding ioctl() to set this property.
1490 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1492 if (zcmd_write_src_nvlist(hdl
, &zc
, nvl
) != 0)
1495 ret
= zfs_ioctl(hdl
, ZFS_IOC_SET_PROP
, &zc
);
1498 zfs_setprop_error(hdl
, prop
, errno
, errbuf
);
1499 if (added_resv
&& errno
== ENOSPC
) {
1500 /* clean up the volsize property we tried to set */
1501 uint64_t old_volsize
= zfs_prop_get_int(zhp
,
1504 zcmd_free_nvlists(&zc
);
1505 if (nvlist_alloc(&nvl
, NV_UNIQUE_NAME
, 0) != 0)
1507 if (nvlist_add_uint64(nvl
,
1508 zfs_prop_to_name(ZFS_PROP_VOLSIZE
),
1511 if (zcmd_write_src_nvlist(hdl
, &zc
, nvl
) != 0)
1513 (void) zfs_ioctl(hdl
, ZFS_IOC_SET_PROP
, &zc
);
1517 ret
= changelist_postfix(cl
);
1521 * Refresh the statistics so the new property
1522 * value is reflected.
1524 (void) get_stats(zhp
);
1527 * Remount the filesystem to propagate the change
1528 * if one of the options handled by the generic
1529 * Linux namespace layer has been modified.
1531 if (zfs_is_namespace_prop(prop
) &&
1532 zfs_is_mounted(zhp
, NULL
))
1533 ret
= zfs_mount(zhp
, MNTOPT_REMOUNT
, 0);
1539 zcmd_free_nvlists(&zc
);
1541 changelist_free(cl
);
1546 * Given a property, inherit the value from the parent dataset, or if received
1547 * is TRUE, revert to the received value, if any.
1550 zfs_prop_inherit(zfs_handle_t
*zhp
, const char *propname
, boolean_t received
)
1552 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
1554 prop_changelist_t
*cl
;
1555 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
1559 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
1560 "cannot inherit %s for '%s'"), propname
, zhp
->zfs_name
);
1562 zc
.zc_cookie
= received
;
1563 if ((prop
= zfs_name_to_prop(propname
)) == ZPROP_INVAL
) {
1565 * For user properties, the amount of work we have to do is very
1566 * small, so just do it here.
1568 if (!zfs_prop_user(propname
)) {
1569 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1570 "invalid property"));
1571 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
1574 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1575 (void) strlcpy(zc
.zc_value
, propname
, sizeof (zc
.zc_value
));
1577 if (zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_INHERIT_PROP
, &zc
) != 0)
1578 return (zfs_standard_error(hdl
, errno
, errbuf
));
1584 * Verify that this property is inheritable.
1586 if (zfs_prop_readonly(prop
))
1587 return (zfs_error(hdl
, EZFS_PROPREADONLY
, errbuf
));
1589 if (!zfs_prop_inheritable(prop
) && !received
)
1590 return (zfs_error(hdl
, EZFS_PROPNONINHERIT
, errbuf
));
1593 * Check to see if the value applies to this type
1595 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_type
))
1596 return (zfs_error(hdl
, EZFS_PROPTYPE
, errbuf
));
1599 * Normalize the name, to get rid of shorthand abbreviations.
1601 propname
= zfs_prop_to_name(prop
);
1602 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1603 (void) strlcpy(zc
.zc_value
, propname
, sizeof (zc
.zc_value
));
1605 if (prop
== ZFS_PROP_MOUNTPOINT
&& getzoneid() == GLOBAL_ZONEID
&&
1606 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
)) {
1607 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1608 "dataset is used in a non-global zone"));
1609 return (zfs_error(hdl
, EZFS_ZONED
, errbuf
));
1613 * Determine datasets which will be affected by this change, if any.
1615 if ((cl
= changelist_gather(zhp
, prop
, 0, 0)) == NULL
)
1618 if (prop
== ZFS_PROP_MOUNTPOINT
&& changelist_haszonedchild(cl
)) {
1619 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1620 "child dataset with inherited mountpoint is used "
1621 "in a non-global zone"));
1622 ret
= zfs_error(hdl
, EZFS_ZONED
, errbuf
);
1626 if ((ret
= changelist_prefix(cl
)) != 0)
1629 if ((ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_INHERIT_PROP
, &zc
)) != 0) {
1630 return (zfs_standard_error(hdl
, errno
, errbuf
));
1633 if ((ret
= changelist_postfix(cl
)) != 0)
1637 * Refresh the statistics so the new property is reflected.
1639 (void) get_stats(zhp
);
1643 changelist_free(cl
);
1648 * True DSL properties are stored in an nvlist. The following two functions
1649 * extract them appropriately.
1652 getprop_uint64(zfs_handle_t
*zhp
, zfs_prop_t prop
, char **source
)
1658 if (nvlist_lookup_nvlist(zhp
->zfs_props
,
1659 zfs_prop_to_name(prop
), &nv
) == 0) {
1660 verify(nvlist_lookup_uint64(nv
, ZPROP_VALUE
, &value
) == 0);
1661 (void) nvlist_lookup_string(nv
, ZPROP_SOURCE
, source
);
1663 verify(!zhp
->zfs_props_table
||
1664 zhp
->zfs_props_table
[prop
] == B_TRUE
);
1665 value
= zfs_prop_default_numeric(prop
);
1673 getprop_string(zfs_handle_t
*zhp
, zfs_prop_t prop
, char **source
)
1679 if (nvlist_lookup_nvlist(zhp
->zfs_props
,
1680 zfs_prop_to_name(prop
), &nv
) == 0) {
1681 verify(nvlist_lookup_string(nv
, ZPROP_VALUE
, &value
) == 0);
1682 (void) nvlist_lookup_string(nv
, ZPROP_SOURCE
, source
);
1684 verify(!zhp
->zfs_props_table
||
1685 zhp
->zfs_props_table
[prop
] == B_TRUE
);
1686 if ((value
= (char *)zfs_prop_default_string(prop
)) == NULL
)
1695 zfs_is_recvd_props_mode(zfs_handle_t
*zhp
)
1697 return (zhp
->zfs_props
== zhp
->zfs_recvd_props
);
1701 zfs_set_recvd_props_mode(zfs_handle_t
*zhp
, uint64_t *cookie
)
1703 *cookie
= (uint64_t)(uintptr_t)zhp
->zfs_props
;
1704 zhp
->zfs_props
= zhp
->zfs_recvd_props
;
1708 zfs_unset_recvd_props_mode(zfs_handle_t
*zhp
, uint64_t *cookie
)
1710 zhp
->zfs_props
= (nvlist_t
*)(uintptr_t)*cookie
;
1715 * Internal function for getting a numeric property. Both zfs_prop_get() and
1716 * zfs_prop_get_int() are built using this interface.
1718 * Certain properties can be overridden using 'mount -o'. In this case, scan
1719 * the contents of the /etc/mtab entry, searching for the appropriate options.
1720 * If they differ from the on-disk values, report the current values and mark
1721 * the source "temporary".
1724 get_numeric_property(zfs_handle_t
*zhp
, zfs_prop_t prop
, zprop_source_t
*src
,
1725 char **source
, uint64_t *val
)
1727 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
1728 nvlist_t
*zplprops
= NULL
;
1730 char *mntopt_on
= NULL
;
1731 char *mntopt_off
= NULL
;
1732 boolean_t received
= zfs_is_recvd_props_mode(zhp
);
1737 case ZFS_PROP_ATIME
:
1738 mntopt_on
= MNTOPT_ATIME
;
1739 mntopt_off
= MNTOPT_NOATIME
;
1742 case ZFS_PROP_DEVICES
:
1743 mntopt_on
= MNTOPT_DEVICES
;
1744 mntopt_off
= MNTOPT_NODEVICES
;
1748 mntopt_on
= MNTOPT_EXEC
;
1749 mntopt_off
= MNTOPT_NOEXEC
;
1752 case ZFS_PROP_READONLY
:
1753 mntopt_on
= MNTOPT_RO
;
1754 mntopt_off
= MNTOPT_RW
;
1757 case ZFS_PROP_SETUID
:
1758 mntopt_on
= MNTOPT_SETUID
;
1759 mntopt_off
= MNTOPT_NOSETUID
;
1762 case ZFS_PROP_XATTR
:
1763 mntopt_on
= MNTOPT_XATTR
;
1764 mntopt_off
= MNTOPT_NOXATTR
;
1767 case ZFS_PROP_NBMAND
:
1768 mntopt_on
= MNTOPT_NBMAND
;
1769 mntopt_off
= MNTOPT_NONBMAND
;
1776 * Because looking up the mount options is potentially expensive
1777 * (iterating over all of /etc/mtab), we defer its calculation until
1778 * we're looking up a property which requires its presence.
1780 if (!zhp
->zfs_mntcheck
&&
1781 (mntopt_on
!= NULL
|| prop
== ZFS_PROP_MOUNTED
)) {
1782 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
1783 struct mnttab entry
;
1785 if (libzfs_mnttab_find(hdl
, zhp
->zfs_name
, &entry
) == 0) {
1786 zhp
->zfs_mntopts
= zfs_strdup(hdl
,
1788 if (zhp
->zfs_mntopts
== NULL
)
1792 zhp
->zfs_mntcheck
= B_TRUE
;
1795 if (zhp
->zfs_mntopts
== NULL
)
1796 mnt
.mnt_mntopts
= "";
1798 mnt
.mnt_mntopts
= zhp
->zfs_mntopts
;
1801 case ZFS_PROP_ATIME
:
1802 case ZFS_PROP_DEVICES
:
1804 case ZFS_PROP_READONLY
:
1805 case ZFS_PROP_SETUID
:
1806 case ZFS_PROP_XATTR
:
1807 case ZFS_PROP_NBMAND
:
1808 *val
= getprop_uint64(zhp
, prop
, source
);
1813 if (hasmntopt(&mnt
, mntopt_on
) && !*val
) {
1816 *src
= ZPROP_SRC_TEMPORARY
;
1817 } else if (hasmntopt(&mnt
, mntopt_off
) && *val
) {
1820 *src
= ZPROP_SRC_TEMPORARY
;
1824 case ZFS_PROP_CANMOUNT
:
1825 case ZFS_PROP_VOLSIZE
:
1826 case ZFS_PROP_QUOTA
:
1827 case ZFS_PROP_REFQUOTA
:
1828 case ZFS_PROP_RESERVATION
:
1829 case ZFS_PROP_REFRESERVATION
:
1830 *val
= getprop_uint64(zhp
, prop
, source
);
1832 if (*source
== NULL
) {
1833 /* not default, must be local */
1834 *source
= zhp
->zfs_name
;
1838 case ZFS_PROP_MOUNTED
:
1839 *val
= (zhp
->zfs_mntopts
!= NULL
);
1842 case ZFS_PROP_NUMCLONES
:
1843 *val
= zhp
->zfs_dmustats
.dds_num_clones
;
1846 case ZFS_PROP_VERSION
:
1847 case ZFS_PROP_NORMALIZE
:
1848 case ZFS_PROP_UTF8ONLY
:
1850 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_head_type
) ||
1851 zcmd_alloc_dst_nvlist(zhp
->zfs_hdl
, &zc
, 0) != 0)
1853 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1854 if (zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_OBJSET_ZPLPROPS
, &zc
)) {
1855 zcmd_free_nvlists(&zc
);
1858 if (zcmd_read_dst_nvlist(zhp
->zfs_hdl
, &zc
, &zplprops
) != 0 ||
1859 nvlist_lookup_uint64(zplprops
, zfs_prop_to_name(prop
),
1861 zcmd_free_nvlists(&zc
);
1865 nvlist_free(zplprops
);
1866 zcmd_free_nvlists(&zc
);
1870 switch (zfs_prop_get_type(prop
)) {
1871 case PROP_TYPE_NUMBER
:
1872 case PROP_TYPE_INDEX
:
1873 *val
= getprop_uint64(zhp
, prop
, source
);
1875 * If we tried to use a default value for a
1876 * readonly property, it means that it was not
1879 if (zfs_prop_readonly(prop
) &&
1880 *source
!= NULL
&& (*source
)[0] == '\0') {
1885 case PROP_TYPE_STRING
:
1887 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
1888 "cannot get non-numeric property"));
1889 return (zfs_error(zhp
->zfs_hdl
, EZFS_BADPROP
,
1890 dgettext(TEXT_DOMAIN
, "internal error")));
1898 * Calculate the source type, given the raw source string.
1901 get_source(zfs_handle_t
*zhp
, zprop_source_t
*srctype
, char *source
,
1902 char *statbuf
, size_t statlen
)
1904 if (statbuf
== NULL
|| *srctype
== ZPROP_SRC_TEMPORARY
)
1907 if (source
== NULL
) {
1908 *srctype
= ZPROP_SRC_NONE
;
1909 } else if (source
[0] == '\0') {
1910 *srctype
= ZPROP_SRC_DEFAULT
;
1911 } else if (strstr(source
, ZPROP_SOURCE_VAL_RECVD
) != NULL
) {
1912 *srctype
= ZPROP_SRC_RECEIVED
;
1914 if (strcmp(source
, zhp
->zfs_name
) == 0) {
1915 *srctype
= ZPROP_SRC_LOCAL
;
1917 (void) strlcpy(statbuf
, source
, statlen
);
1918 *srctype
= ZPROP_SRC_INHERITED
;
1925 zfs_prop_get_recvd(zfs_handle_t
*zhp
, const char *propname
, char *propbuf
,
1926 size_t proplen
, boolean_t literal
)
1931 if (zhp
->zfs_recvd_props
== NULL
)
1932 if (get_recvd_props_ioctl(zhp
) != 0)
1935 prop
= zfs_name_to_prop(propname
);
1937 if (prop
!= ZPROP_INVAL
) {
1939 if (!nvlist_exists(zhp
->zfs_recvd_props
, propname
))
1941 zfs_set_recvd_props_mode(zhp
, &cookie
);
1942 err
= zfs_prop_get(zhp
, prop
, propbuf
, proplen
,
1943 NULL
, NULL
, 0, literal
);
1944 zfs_unset_recvd_props_mode(zhp
, &cookie
);
1948 if (nvlist_lookup_nvlist(zhp
->zfs_recvd_props
,
1949 propname
, &propval
) != 0)
1951 verify(nvlist_lookup_string(propval
, ZPROP_VALUE
,
1953 (void) strlcpy(propbuf
, recvdval
, proplen
);
1956 return (err
== 0 ? 0 : -1);
1960 get_clones_string(zfs_handle_t
*zhp
, char *propbuf
, size_t proplen
)
1965 value
= zfs_get_clones_nvl(zhp
);
1970 for (pair
= nvlist_next_nvpair(value
, NULL
); pair
!= NULL
;
1971 pair
= nvlist_next_nvpair(value
, pair
)) {
1972 if (propbuf
[0] != '\0')
1973 (void) strlcat(propbuf
, ",", proplen
);
1974 (void) strlcat(propbuf
, nvpair_name(pair
), proplen
);
1980 struct get_clones_arg
{
1984 char buf
[ZFS_MAXNAMELEN
];
1988 get_clones_cb(zfs_handle_t
*zhp
, void *arg
)
1990 struct get_clones_arg
*gca
= arg
;
1992 if (gca
->numclones
== 0) {
1997 if (zfs_prop_get(zhp
, ZFS_PROP_ORIGIN
, gca
->buf
, sizeof (gca
->buf
),
1998 NULL
, NULL
, 0, B_TRUE
) != 0)
2000 if (strcmp(gca
->buf
, gca
->origin
) == 0) {
2001 if (nvlist_add_boolean(gca
->value
, zfs_get_name(zhp
)) != 0) {
2003 return (no_memory(zhp
->zfs_hdl
));
2009 (void) zfs_iter_children(zhp
, get_clones_cb
, gca
);
2015 zfs_get_clones_nvl(zfs_handle_t
*zhp
)
2017 nvlist_t
*nv
, *value
;
2019 if (nvlist_lookup_nvlist(zhp
->zfs_props
,
2020 zfs_prop_to_name(ZFS_PROP_CLONES
), &nv
) != 0) {
2021 struct get_clones_arg gca
;
2024 * if this is a snapshot, then the kernel wasn't able
2025 * to get the clones. Do it by slowly iterating.
2027 if (zhp
->zfs_type
!= ZFS_TYPE_SNAPSHOT
)
2029 if (nvlist_alloc(&nv
, NV_UNIQUE_NAME
, 0) != 0)
2031 if (nvlist_alloc(&value
, NV_UNIQUE_NAME
, 0) != 0) {
2036 gca
.numclones
= zfs_prop_get_int(zhp
, ZFS_PROP_NUMCLONES
);
2038 gca
.origin
= zhp
->zfs_name
;
2040 if (gca
.numclones
!= 0) {
2042 char pool
[ZFS_MAXNAMELEN
];
2045 /* get the pool name */
2046 (void) strlcpy(pool
, zhp
->zfs_name
, sizeof (pool
));
2047 (void) strsep(&cp
, "/@");
2048 root
= zfs_open(zhp
->zfs_hdl
, pool
,
2049 ZFS_TYPE_FILESYSTEM
);
2051 (void) get_clones_cb(root
, &gca
);
2054 if (gca
.numclones
!= 0 ||
2055 nvlist_add_nvlist(nv
, ZPROP_VALUE
, value
) != 0 ||
2056 nvlist_add_nvlist(zhp
->zfs_props
,
2057 zfs_prop_to_name(ZFS_PROP_CLONES
), nv
) != 0) {
2064 verify(0 == nvlist_lookup_nvlist(zhp
->zfs_props
,
2065 zfs_prop_to_name(ZFS_PROP_CLONES
), &nv
));
2068 verify(nvlist_lookup_nvlist(nv
, ZPROP_VALUE
, &value
) == 0);
2074 * Retrieve a property from the given object. If 'literal' is specified, then
2075 * numbers are left as exact values. Otherwise, numbers are converted to a
2076 * human-readable form.
2078 * Returns 0 on success, or -1 on error.
2081 zfs_prop_get(zfs_handle_t
*zhp
, zfs_prop_t prop
, char *propbuf
, size_t proplen
,
2082 zprop_source_t
*src
, char *statbuf
, size_t statlen
, boolean_t literal
)
2084 char *source
= NULL
;
2088 boolean_t received
= zfs_is_recvd_props_mode(zhp
);
2091 * Check to see if this property applies to our object
2093 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_type
))
2096 if (received
&& zfs_prop_readonly(prop
))
2100 *src
= ZPROP_SRC_NONE
;
2103 case ZFS_PROP_CREATION
:
2105 * 'creation' is a time_t stored in the statistics. We convert
2106 * this into a string unless 'literal' is specified.
2109 val
= getprop_uint64(zhp
, prop
, &source
);
2110 time_t time
= (time_t)val
;
2114 localtime_r(&time
, &t
) == NULL
||
2115 strftime(propbuf
, proplen
, "%a %b %e %k:%M %Y",
2117 (void) snprintf(propbuf
, proplen
, "%llu", (u_longlong_t
) val
);
2121 case ZFS_PROP_MOUNTPOINT
:
2123 * Getting the precise mountpoint can be tricky.
2125 * - for 'none' or 'legacy', return those values.
2126 * - for inherited mountpoints, we want to take everything
2127 * after our ancestor and append it to the inherited value.
2129 * If the pool has an alternate root, we want to prepend that
2130 * root to any values we return.
2133 str
= getprop_string(zhp
, prop
, &source
);
2135 if (str
[0] == '/') {
2136 char buf
[MAXPATHLEN
];
2138 const char *relpath
;
2141 * If we inherit the mountpoint, even from a dataset
2142 * with a received value, the source will be the path of
2143 * the dataset we inherit from. If source is
2144 * ZPROP_SOURCE_VAL_RECVD, the received value is not
2147 if (strcmp(source
, ZPROP_SOURCE_VAL_RECVD
) == 0) {
2150 relpath
= zhp
->zfs_name
+ strlen(source
);
2151 if (relpath
[0] == '/')
2155 if ((zpool_get_prop(zhp
->zpool_hdl
,
2156 ZPOOL_PROP_ALTROOT
, buf
, MAXPATHLEN
, NULL
)) ||
2157 (strcmp(root
, "-") == 0))
2160 * Special case an alternate root of '/'. This will
2161 * avoid having multiple leading slashes in the
2164 if (strcmp(root
, "/") == 0)
2168 * If the mountpoint is '/' then skip over this
2169 * if we are obtaining either an alternate root or
2170 * an inherited mountpoint.
2172 if (str
[1] == '\0' && (root
[0] != '\0' ||
2173 relpath
[0] != '\0'))
2176 if (relpath
[0] == '\0')
2177 (void) snprintf(propbuf
, proplen
, "%s%s",
2180 (void) snprintf(propbuf
, proplen
, "%s%s%s%s",
2181 root
, str
, relpath
[0] == '@' ? "" : "/",
2184 /* 'legacy' or 'none' */
2185 (void) strlcpy(propbuf
, str
, proplen
);
2190 case ZFS_PROP_ORIGIN
:
2191 (void) strlcpy(propbuf
, getprop_string(zhp
, prop
, &source
),
2194 * If there is no parent at all, return failure to indicate that
2195 * it doesn't apply to this dataset.
2197 if (propbuf
[0] == '\0')
2201 case ZFS_PROP_CLONES
:
2202 if (get_clones_string(zhp
, propbuf
, proplen
) != 0)
2206 case ZFS_PROP_QUOTA
:
2207 case ZFS_PROP_REFQUOTA
:
2208 case ZFS_PROP_RESERVATION
:
2209 case ZFS_PROP_REFRESERVATION
:
2211 if (get_numeric_property(zhp
, prop
, src
, &source
, &val
) != 0)
2215 * If quota or reservation is 0, we translate this into 'none'
2216 * (unless literal is set), and indicate that it's the default
2217 * value. Otherwise, we print the number nicely and indicate
2218 * that its set locally.
2222 (void) strlcpy(propbuf
, "0", proplen
);
2224 (void) strlcpy(propbuf
, "none", proplen
);
2227 (void) snprintf(propbuf
, proplen
, "%llu",
2230 zfs_nicenum(val
, propbuf
, proplen
);
2234 case ZFS_PROP_REFRATIO
:
2235 case ZFS_PROP_COMPRESSRATIO
:
2236 if (get_numeric_property(zhp
, prop
, src
, &source
, &val
) != 0)
2238 (void) snprintf(propbuf
, proplen
, "%llu.%02llux",
2239 (u_longlong_t
)(val
/ 100),
2240 (u_longlong_t
)(val
% 100));
2244 switch (zhp
->zfs_type
) {
2245 case ZFS_TYPE_FILESYSTEM
:
2248 case ZFS_TYPE_VOLUME
:
2251 case ZFS_TYPE_SNAPSHOT
:
2257 (void) snprintf(propbuf
, proplen
, "%s", str
);
2260 case ZFS_PROP_MOUNTED
:
2262 * The 'mounted' property is a pseudo-property that described
2263 * whether the filesystem is currently mounted. Even though
2264 * it's a boolean value, the typical values of "on" and "off"
2265 * don't make sense, so we translate to "yes" and "no".
2267 if (get_numeric_property(zhp
, ZFS_PROP_MOUNTED
,
2268 src
, &source
, &val
) != 0)
2271 (void) strlcpy(propbuf
, "yes", proplen
);
2273 (void) strlcpy(propbuf
, "no", proplen
);
2278 * The 'name' property is a pseudo-property derived from the
2279 * dataset name. It is presented as a real property to simplify
2282 (void) strlcpy(propbuf
, zhp
->zfs_name
, proplen
);
2285 case ZFS_PROP_MLSLABEL
:
2287 #ifdef HAVE_MLSLABEL
2288 m_label_t
*new_sl
= NULL
;
2289 char *ascii
= NULL
; /* human readable label */
2291 (void) strlcpy(propbuf
,
2292 getprop_string(zhp
, prop
, &source
), proplen
);
2294 if (literal
|| (strcasecmp(propbuf
,
2295 ZFS_MLSLABEL_DEFAULT
) == 0))
2299 * Try to translate the internal hex string to
2300 * human-readable output. If there are any
2301 * problems just use the hex string.
2304 if (str_to_label(propbuf
, &new_sl
, MAC_LABEL
,
2305 L_NO_CORRECTION
, NULL
) == -1) {
2306 m_label_free(new_sl
);
2310 if (label_to_str(new_sl
, &ascii
, M_LABEL
,
2314 m_label_free(new_sl
);
2317 m_label_free(new_sl
);
2319 (void) strlcpy(propbuf
, ascii
, proplen
);
2322 (void) strlcpy(propbuf
,
2323 getprop_string(zhp
, prop
, &source
), proplen
);
2324 #endif /* HAVE_MLSLABEL */
2330 * GUIDs are stored as numbers, but they are identifiers.
2331 * We don't want them to be pretty printed, because pretty
2332 * printing mangles the ID into a truncated and useless value.
2334 if (get_numeric_property(zhp
, prop
, src
, &source
, &val
) != 0)
2336 (void) snprintf(propbuf
, proplen
, "%llu", (u_longlong_t
)val
);
2340 switch (zfs_prop_get_type(prop
)) {
2341 case PROP_TYPE_NUMBER
:
2342 if (get_numeric_property(zhp
, prop
, src
,
2343 &source
, &val
) != 0)
2346 (void) snprintf(propbuf
, proplen
, "%llu",
2349 zfs_nicenum(val
, propbuf
, proplen
);
2352 case PROP_TYPE_STRING
:
2353 (void) strlcpy(propbuf
,
2354 getprop_string(zhp
, prop
, &source
), proplen
);
2357 case PROP_TYPE_INDEX
:
2358 if (get_numeric_property(zhp
, prop
, src
,
2359 &source
, &val
) != 0)
2361 if (zfs_prop_index_to_string(prop
, val
, &strval
) != 0)
2363 (void) strlcpy(propbuf
, strval
, proplen
);
2371 get_source(zhp
, src
, source
, statbuf
, statlen
);
2377 * Utility function to get the given numeric property. Does no validation that
2378 * the given property is the appropriate type; should only be used with
2379 * hard-coded property types.
2382 zfs_prop_get_int(zfs_handle_t
*zhp
, zfs_prop_t prop
)
2387 (void) get_numeric_property(zhp
, prop
, NULL
, &source
, &val
);
2393 zfs_prop_set_int(zfs_handle_t
*zhp
, zfs_prop_t prop
, uint64_t val
)
2397 (void) snprintf(buf
, sizeof (buf
), "%llu", (longlong_t
)val
);
2398 return (zfs_prop_set(zhp
, zfs_prop_to_name(prop
), buf
));
2402 * Similar to zfs_prop_get(), but returns the value as an integer.
2405 zfs_prop_get_numeric(zfs_handle_t
*zhp
, zfs_prop_t prop
, uint64_t *value
,
2406 zprop_source_t
*src
, char *statbuf
, size_t statlen
)
2411 * Check to see if this property applies to our object
2413 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_type
)) {
2414 return (zfs_error_fmt(zhp
->zfs_hdl
, EZFS_PROPTYPE
,
2415 dgettext(TEXT_DOMAIN
, "cannot get property '%s'"),
2416 zfs_prop_to_name(prop
)));
2420 *src
= ZPROP_SRC_NONE
;
2422 if (get_numeric_property(zhp
, prop
, src
, &source
, value
) != 0)
2425 get_source(zhp
, src
, source
, statbuf
, statlen
);
2432 idmap_id_to_numeric_domain_rid(uid_t id
, boolean_t isuser
,
2433 char **domainp
, idmap_rid_t
*ridp
)
2435 idmap_get_handle_t
*get_hdl
= NULL
;
2439 if (idmap_get_create(&get_hdl
) != IDMAP_SUCCESS
)
2443 err
= idmap_get_sidbyuid(get_hdl
, id
,
2444 IDMAP_REQ_FLG_USE_CACHE
, domainp
, ridp
, &status
);
2446 err
= idmap_get_sidbygid(get_hdl
, id
,
2447 IDMAP_REQ_FLG_USE_CACHE
, domainp
, ridp
, &status
);
2449 if (err
== IDMAP_SUCCESS
&&
2450 idmap_get_mappings(get_hdl
) == IDMAP_SUCCESS
&&
2451 status
== IDMAP_SUCCESS
)
2457 idmap_get_destroy(get_hdl
);
2460 #endif /* HAVE_IDMAP */
2463 * convert the propname into parameters needed by kernel
2464 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829
2465 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789
2466 * Eg: groupquota@staff -> ZFS_PROP_GROUPQUOTA, "", 1234
2467 * Eg: groupused@staff -> ZFS_PROP_GROUPUSED, "", 1234
2470 userquota_propname_decode(const char *propname
, boolean_t zoned
,
2471 zfs_userquota_prop_t
*typep
, char *domain
, int domainlen
, uint64_t *ridp
)
2473 zfs_userquota_prop_t type
;
2482 /* Figure out the property type ({user|group}{quota|space}) */
2483 for (type
= 0; type
< ZFS_NUM_USERQUOTA_PROPS
; type
++) {
2484 if (strncmp(propname
, zfs_userquota_prop_prefixes
[type
],
2485 strlen(zfs_userquota_prop_prefixes
[type
])) == 0)
2488 if (type
== ZFS_NUM_USERQUOTA_PROPS
)
2492 isuser
= (type
== ZFS_PROP_USERQUOTA
|| type
== ZFS_PROP_USERUSED
);
2493 isgroup
= (type
== ZFS_PROP_GROUPQUOTA
|| type
== ZFS_PROP_GROUPUSED
);
2495 cp
= strchr(propname
, '@') + 1;
2497 if (isuser
&& (pw
= getpwnam(cp
)) != NULL
) {
2498 if (zoned
&& getzoneid() == GLOBAL_ZONEID
)
2501 } else if (isgroup
&& (gr
= getgrnam(cp
)) != NULL
) {
2502 if (zoned
&& getzoneid() == GLOBAL_ZONEID
)
2505 } else if (strchr(cp
, '@')) {
2508 * It's a SID name (eg "user@domain") that needs to be
2509 * turned into S-1-domainID-RID.
2511 directory_error_t e
;
2512 char *numericsid
= NULL
;
2515 if (zoned
&& getzoneid() == GLOBAL_ZONEID
)
2518 e
= directory_sid_from_user_name(NULL
,
2521 e
= directory_sid_from_group_name(NULL
,
2525 directory_error_free(e
);
2528 if (numericsid
== NULL
)
2531 (void) strlcpy(domain
, cp
, domainlen
);
2532 cp
= strrchr(domain
, '-');
2537 *ridp
= strtoull(cp
, &end
, 10);
2540 if (errno
!= 0 || *end
!= '\0')
2544 #endif /* HAVE_IDMAP */
2546 /* It's a user/group ID (eg "12345"). */
2549 id
= strtoul(cp
, &end
, 10);
2554 /* It's an ephemeral ID. */
2558 if (idmap_id_to_numeric_domain_rid(id
, isuser
,
2559 &mapdomain
, &rid
) != 0)
2561 (void) strlcpy(domain
, mapdomain
, domainlen
);
2565 #endif /* HAVE_IDMAP */
2575 zfs_prop_get_userquota_common(zfs_handle_t
*zhp
, const char *propname
,
2576 uint64_t *propvalue
, zfs_userquota_prop_t
*typep
)
2579 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2581 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
2583 err
= userquota_propname_decode(propname
,
2584 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
),
2585 typep
, zc
.zc_value
, sizeof (zc
.zc_value
), &zc
.zc_guid
);
2586 zc
.zc_objset_type
= *typep
;
2590 err
= ioctl(zhp
->zfs_hdl
->libzfs_fd
, ZFS_IOC_USERSPACE_ONE
, &zc
);
2594 *propvalue
= zc
.zc_cookie
;
2599 zfs_prop_get_userquota_int(zfs_handle_t
*zhp
, const char *propname
,
2600 uint64_t *propvalue
)
2602 zfs_userquota_prop_t type
;
2604 return (zfs_prop_get_userquota_common(zhp
, propname
, propvalue
,
2609 zfs_prop_get_userquota(zfs_handle_t
*zhp
, const char *propname
,
2610 char *propbuf
, int proplen
, boolean_t literal
)
2614 zfs_userquota_prop_t type
;
2616 err
= zfs_prop_get_userquota_common(zhp
, propname
, &propvalue
,
2623 (void) snprintf(propbuf
, proplen
, "%llu",
2624 (u_longlong_t
)propvalue
);
2625 } else if (propvalue
== 0 &&
2626 (type
== ZFS_PROP_USERQUOTA
|| type
== ZFS_PROP_GROUPQUOTA
)) {
2627 (void) strlcpy(propbuf
, "none", proplen
);
2629 zfs_nicenum(propvalue
, propbuf
, proplen
);
2635 zfs_prop_get_written_int(zfs_handle_t
*zhp
, const char *propname
,
2636 uint64_t *propvalue
)
2639 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2640 const char *snapname
;
2642 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
2644 snapname
= strchr(propname
, '@') + 1;
2645 if (strchr(snapname
, '@')) {
2646 (void) strlcpy(zc
.zc_value
, snapname
, sizeof (zc
.zc_value
));
2648 /* snapname is the short name, append it to zhp's fsname */
2651 (void) strlcpy(zc
.zc_value
, zhp
->zfs_name
,
2652 sizeof (zc
.zc_value
));
2653 cp
= strchr(zc
.zc_value
, '@');
2656 (void) strlcat(zc
.zc_value
, "@", sizeof (zc
.zc_value
));
2657 (void) strlcat(zc
.zc_value
, snapname
, sizeof (zc
.zc_value
));
2660 err
= ioctl(zhp
->zfs_hdl
->libzfs_fd
, ZFS_IOC_SPACE_WRITTEN
, &zc
);
2664 *propvalue
= zc
.zc_cookie
;
2669 zfs_prop_get_written(zfs_handle_t
*zhp
, const char *propname
,
2670 char *propbuf
, int proplen
, boolean_t literal
)
2675 err
= zfs_prop_get_written_int(zhp
, propname
, &propvalue
);
2681 (void) snprintf(propbuf
, proplen
, "%llu", (long long unsigned int)propvalue
);
2683 zfs_nicenum(propvalue
, propbuf
, proplen
);
2690 zfs_get_snapused_int(zfs_handle_t
*firstsnap
, zfs_handle_t
*lastsnap
,
2694 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2696 (void) strlcpy(zc
.zc_name
, lastsnap
->zfs_name
, sizeof (zc
.zc_name
));
2697 (void) strlcpy(zc
.zc_value
, firstsnap
->zfs_name
, sizeof (zc
.zc_value
));
2699 err
= ioctl(lastsnap
->zfs_hdl
->libzfs_fd
, ZFS_IOC_SPACE_SNAPS
, &zc
);
2703 *usedp
= zc
.zc_cookie
;
2709 * Returns the name of the given zfs handle.
2712 zfs_get_name(const zfs_handle_t
*zhp
)
2714 return (zhp
->zfs_name
);
2718 * Returns the type of the given zfs handle.
2721 zfs_get_type(const zfs_handle_t
*zhp
)
2723 return (zhp
->zfs_type
);
2727 * Is one dataset name a child dataset of another?
2729 * Needs to handle these cases:
2730 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo"
2731 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar"
2732 * Descendant? No. No. No. Yes.
2735 is_descendant(const char *ds1
, const char *ds2
)
2737 size_t d1len
= strlen(ds1
);
2739 /* ds2 can't be a descendant if it's smaller */
2740 if (strlen(ds2
) < d1len
)
2743 /* otherwise, compare strings and verify that there's a '/' char */
2744 return (ds2
[d1len
] == '/' && (strncmp(ds1
, ds2
, d1len
) == 0));
2748 * Given a complete name, return just the portion that refers to the parent.
2749 * Will return -1 if there is no parent (path is just the name of the
2753 parent_name(const char *path
, char *buf
, size_t buflen
)
2757 (void) strlcpy(buf
, path
, buflen
);
2759 if ((slashp
= strrchr(buf
, '/')) == NULL
)
2767 * If accept_ancestor is false, then check to make sure that the given path has
2768 * a parent, and that it exists. If accept_ancestor is true, then find the
2769 * closest existing ancestor for the given path. In prefixlen return the
2770 * length of already existing prefix of the given path. We also fetch the
2771 * 'zoned' property, which is used to validate property settings when creating
2775 check_parents(libzfs_handle_t
*hdl
, const char *path
, uint64_t *zoned
,
2776 boolean_t accept_ancestor
, int *prefixlen
)
2778 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2779 char parent
[ZFS_MAXNAMELEN
];
2785 (void) snprintf(errbuf
, sizeof (errbuf
),
2786 dgettext(TEXT_DOMAIN
, "cannot create '%s'"), path
);
2788 /* get parent, and check to see if this is just a pool */
2789 if (parent_name(path
, parent
, sizeof (parent
)) != 0) {
2790 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2791 "missing dataset name"));
2792 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
2795 /* check to see if the pool exists */
2796 if ((slash
= strchr(parent
, '/')) == NULL
)
2797 slash
= parent
+ strlen(parent
);
2798 (void) strncpy(zc
.zc_name
, parent
, slash
- parent
);
2799 zc
.zc_name
[slash
- parent
] = '\0';
2800 if (ioctl(hdl
->libzfs_fd
, ZFS_IOC_OBJSET_STATS
, &zc
) != 0 &&
2802 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2803 "no such pool '%s'"), zc
.zc_name
);
2804 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2807 /* check to see if the parent dataset exists */
2808 while ((zhp
= make_dataset_handle(hdl
, parent
)) == NULL
) {
2809 if (errno
== ENOENT
&& accept_ancestor
) {
2811 * Go deeper to find an ancestor, give up on top level.
2813 if (parent_name(parent
, parent
, sizeof (parent
)) != 0) {
2814 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2815 "no such pool '%s'"), zc
.zc_name
);
2816 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2818 } else if (errno
== ENOENT
) {
2819 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2820 "parent does not exist"));
2821 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2823 return (zfs_standard_error(hdl
, errno
, errbuf
));
2826 is_zoned
= zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
);
2830 /* we are in a non-global zone, but parent is in the global zone */
2831 if (getzoneid() != GLOBAL_ZONEID
&& !is_zoned
) {
2832 (void) zfs_standard_error(hdl
, EPERM
, errbuf
);
2837 /* make sure parent is a filesystem */
2838 if (zfs_get_type(zhp
) != ZFS_TYPE_FILESYSTEM
) {
2839 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2840 "parent is not a filesystem"));
2841 (void) zfs_error(hdl
, EZFS_BADTYPE
, errbuf
);
2847 if (prefixlen
!= NULL
)
2848 *prefixlen
= strlen(parent
);
2853 * Finds whether the dataset of the given type(s) exists.
2856 zfs_dataset_exists(libzfs_handle_t
*hdl
, const char *path
, zfs_type_t types
)
2860 if (!zfs_validate_name(hdl
, path
, types
, B_FALSE
))
2864 * Try to get stats for the dataset, which will tell us if it exists.
2866 if ((zhp
= make_dataset_handle(hdl
, path
)) != NULL
) {
2867 int ds_type
= zhp
->zfs_type
;
2870 if (types
& ds_type
)
2877 * Given a path to 'target', create all the ancestors between
2878 * the prefixlen portion of the path, and the target itself.
2879 * Fail if the initial prefixlen-ancestor does not already exist.
2882 create_parents(libzfs_handle_t
*hdl
, char *target
, int prefixlen
)
2888 /* make sure prefix exists */
2889 cp
= target
+ prefixlen
;
2891 assert(strchr(cp
, '/') == NULL
);
2892 h
= zfs_open(hdl
, target
, ZFS_TYPE_FILESYSTEM
);
2895 h
= zfs_open(hdl
, target
, ZFS_TYPE_FILESYSTEM
);
2903 * Attempt to create, mount, and share any ancestor filesystems,
2904 * up to the prefixlen-long one.
2906 for (cp
= target
+ prefixlen
+ 1;
2907 (cp
= strchr(cp
, '/')); *cp
= '/', cp
++) {
2912 h
= make_dataset_handle(hdl
, target
);
2914 /* it already exists, nothing to do here */
2919 logstr
= hdl
->libzfs_log_str
;
2920 hdl
->libzfs_log_str
= NULL
;
2921 if (zfs_create(hdl
, target
, ZFS_TYPE_FILESYSTEM
,
2923 hdl
->libzfs_log_str
= logstr
;
2924 opname
= dgettext(TEXT_DOMAIN
, "create");
2928 hdl
->libzfs_log_str
= logstr
;
2929 h
= zfs_open(hdl
, target
, ZFS_TYPE_FILESYSTEM
);
2931 opname
= dgettext(TEXT_DOMAIN
, "open");
2935 if (zfs_mount(h
, NULL
, 0) != 0) {
2936 opname
= dgettext(TEXT_DOMAIN
, "mount");
2940 if (zfs_share(h
) != 0) {
2941 opname
= dgettext(TEXT_DOMAIN
, "share");
2951 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2952 "failed to %s ancestor '%s'"), opname
, target
);
2957 * Creates non-existing ancestors of the given path.
2960 zfs_create_ancestors(libzfs_handle_t
*hdl
, const char *path
)
2966 if (check_parents(hdl
, path
, NULL
, B_TRUE
, &prefix
) != 0)
2969 if ((path_copy
= strdup(path
)) != NULL
) {
2970 rc
= create_parents(hdl
, path_copy
, prefix
);
2973 if (path_copy
== NULL
|| rc
!= 0)
2980 * Create a new filesystem or volume.
2983 zfs_create(libzfs_handle_t
*hdl
, const char *path
, zfs_type_t type
,
2986 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2989 uint64_t blocksize
= zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE
);
2993 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
2994 "cannot create '%s'"), path
);
2996 /* validate the path, taking care to note the extended error message */
2997 if (!zfs_validate_name(hdl
, path
, type
, B_TRUE
))
2998 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3000 /* validate parents exist */
3001 if (check_parents(hdl
, path
, &zoned
, B_FALSE
, NULL
) != 0)
3005 * The failure modes when creating a dataset of a different type over
3006 * one that already exists is a little strange. In particular, if you
3007 * try to create a dataset on top of an existing dataset, the ioctl()
3008 * will return ENOENT, not EEXIST. To prevent this from happening, we
3009 * first try to see if the dataset exists.
3011 (void) strlcpy(zc
.zc_name
, path
, sizeof (zc
.zc_name
));
3012 if (zfs_dataset_exists(hdl
, zc
.zc_name
, ZFS_TYPE_DATASET
)) {
3013 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3014 "dataset already exists"));
3015 return (zfs_error(hdl
, EZFS_EXISTS
, errbuf
));
3018 if (type
== ZFS_TYPE_VOLUME
)
3019 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3021 zc
.zc_objset_type
= DMU_OST_ZFS
;
3023 if (props
&& (props
= zfs_valid_proplist(hdl
, type
, props
,
3024 zoned
, NULL
, errbuf
)) == 0)
3027 if (type
== ZFS_TYPE_VOLUME
) {
3029 * If we are creating a volume, the size and block size must
3030 * satisfy a few restraints. First, the blocksize must be a
3031 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the
3032 * volsize must be a multiple of the block size, and cannot be
3035 if (props
== NULL
|| nvlist_lookup_uint64(props
,
3036 zfs_prop_to_name(ZFS_PROP_VOLSIZE
), &size
) != 0) {
3038 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3039 "missing volume size"));
3040 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
3043 if ((ret
= nvlist_lookup_uint64(props
,
3044 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE
),
3045 &blocksize
)) != 0) {
3046 if (ret
== ENOENT
) {
3047 blocksize
= zfs_prop_default_numeric(
3048 ZFS_PROP_VOLBLOCKSIZE
);
3051 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3052 "missing volume block size"));
3053 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
3059 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3060 "volume size cannot be zero"));
3061 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
3064 if (size
% blocksize
!= 0) {
3066 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3067 "volume size must be a multiple of volume block "
3069 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
3073 if (props
&& zcmd_write_src_nvlist(hdl
, &zc
, props
) != 0)
3077 /* create the dataset */
3078 ret
= zfs_ioctl(hdl
, ZFS_IOC_CREATE
, &zc
);
3080 if (ret
== 0 && type
== ZFS_TYPE_VOLUME
) {
3081 ret
= zvol_create_link(hdl
, path
);
3083 (void) zfs_standard_error(hdl
, errno
,
3084 dgettext(TEXT_DOMAIN
,
3085 "Volume successfully created, but device links "
3086 "were not created"));
3087 zcmd_free_nvlists(&zc
);
3092 zcmd_free_nvlists(&zc
);
3094 /* check for failure */
3096 char parent
[ZFS_MAXNAMELEN
];
3097 (void) parent_name(path
, parent
, sizeof (parent
));
3101 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3102 "no such parent '%s'"), parent
);
3103 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
3106 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3107 "parent '%s' is not a filesystem"), parent
);
3108 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3111 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3112 "volume block size must be power of 2 from "
3114 (uint_t
)SPA_MINBLOCKSIZE
,
3115 (uint_t
)SPA_MAXBLOCKSIZE
>> 10);
3117 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
3120 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3121 "pool must be upgraded to set this "
3122 "property or value"));
3123 return (zfs_error(hdl
, EZFS_BADVERSION
, errbuf
));
3127 * This platform can't address a volume this big.
3129 if (type
== ZFS_TYPE_VOLUME
)
3130 return (zfs_error(hdl
, EZFS_VOLTOOBIG
,
3135 return (zfs_standard_error(hdl
, errno
, errbuf
));
3143 * Destroys the given dataset. The caller must make sure that the filesystem
3144 * isn't mounted, and that there are no active dependents. If the file system
3145 * does not exist this function does nothing.
3148 zfs_destroy(zfs_handle_t
*zhp
, boolean_t defer
)
3150 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3152 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3154 if (ZFS_IS_VOLUME(zhp
)) {
3155 if (zvol_remove_link(zhp
->zfs_hdl
, zhp
->zfs_name
) != 0)
3158 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3160 zc
.zc_objset_type
= DMU_OST_ZFS
;
3163 zc
.zc_defer_destroy
= defer
;
3164 if (zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_DESTROY
, &zc
) != 0 &&
3166 return (zfs_standard_error_fmt(zhp
->zfs_hdl
, errno
,
3167 dgettext(TEXT_DOMAIN
, "cannot destroy '%s'"),
3171 remove_mountpoint(zhp
);
3176 struct destroydata
{
3178 const char *snapname
;
3182 zfs_check_snap_cb(zfs_handle_t
*zhp
, void *arg
)
3184 struct destroydata
*dd
= arg
;
3186 char name
[ZFS_MAXNAMELEN
];
3189 (void) snprintf(name
, sizeof (name
),
3190 "%s@%s", zhp
->zfs_name
, dd
->snapname
);
3192 szhp
= make_dataset_handle(zhp
->zfs_hdl
, name
);
3194 verify(nvlist_add_boolean(dd
->nvl
, name
) == 0);
3198 if (zhp
->zfs_type
== ZFS_TYPE_VOLUME
) {
3199 (void) zvol_remove_link(zhp
->zfs_hdl
, name
);
3201 * NB: this is simply a best-effort. We don't want to
3202 * return an error, because then we wouldn't visit all
3207 rv
= zfs_iter_filesystems(zhp
, zfs_check_snap_cb
, dd
);
3213 * Destroys all snapshots with the given name in zhp & descendants.
3216 zfs_destroy_snaps(zfs_handle_t
*zhp
, char *snapname
, boolean_t defer
)
3219 struct destroydata dd
= { 0 };
3221 dd
.snapname
= snapname
;
3222 verify(nvlist_alloc(&dd
.nvl
, NV_UNIQUE_NAME
, 0) == 0);
3223 (void) zfs_check_snap_cb(zfs_handle_dup(zhp
), &dd
);
3225 if (nvlist_next_nvpair(dd
.nvl
, NULL
) == NULL
) {
3226 ret
= zfs_standard_error_fmt(zhp
->zfs_hdl
, ENOENT
,
3227 dgettext(TEXT_DOMAIN
, "cannot destroy '%s@%s'"),
3228 zhp
->zfs_name
, snapname
);
3230 ret
= zfs_destroy_snaps_nvl(zhp
, dd
.nvl
, defer
);
3232 nvlist_free(dd
.nvl
);
3237 * Destroys all the snapshots named in the nvlist. They must be underneath
3238 * the zhp (either snapshots of it, or snapshots of its descendants).
3241 zfs_destroy_snaps_nvl(zfs_handle_t
*zhp
, nvlist_t
*snaps
, boolean_t defer
)
3244 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3246 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3247 if (zcmd_write_src_nvlist(zhp
->zfs_hdl
, &zc
, snaps
) != 0)
3249 zc
.zc_defer_destroy
= defer
;
3251 ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_DESTROY_SNAPS_NVL
, &zc
);
3255 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3256 "cannot destroy snapshots in %s"), zc
.zc_name
);
3260 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
3261 "snapshot is cloned"));
3262 return (zfs_error(zhp
->zfs_hdl
, EZFS_EXISTS
, errbuf
));
3265 return (zfs_standard_error(zhp
->zfs_hdl
, errno
,
3274 * Clones the given dataset. The target must be of the same type as the source.
3277 zfs_clone(zfs_handle_t
*zhp
, const char *target
, nvlist_t
*props
)
3279 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3280 char parent
[ZFS_MAXNAMELEN
];
3283 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3287 assert(zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
);
3289 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3290 "cannot create '%s'"), target
);
3292 /* validate the target/clone name */
3293 if (!zfs_validate_name(hdl
, target
, ZFS_TYPE_FILESYSTEM
, B_TRUE
))
3294 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3296 /* validate parents exist */
3297 if (check_parents(hdl
, target
, &zoned
, B_FALSE
, NULL
) != 0)
3300 (void) parent_name(target
, parent
, sizeof (parent
));
3303 if (ZFS_IS_VOLUME(zhp
)) {
3304 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3305 type
= ZFS_TYPE_VOLUME
;
3307 zc
.zc_objset_type
= DMU_OST_ZFS
;
3308 type
= ZFS_TYPE_FILESYSTEM
;
3312 if ((props
= zfs_valid_proplist(hdl
, type
, props
, zoned
,
3313 zhp
, errbuf
)) == NULL
)
3316 if (zcmd_write_src_nvlist(hdl
, &zc
, props
) != 0) {
3324 (void) strlcpy(zc
.zc_name
, target
, sizeof (zc
.zc_name
));
3325 (void) strlcpy(zc
.zc_value
, zhp
->zfs_name
, sizeof (zc
.zc_value
));
3326 ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_CREATE
, &zc
);
3328 zcmd_free_nvlists(&zc
);
3335 * The parent doesn't exist. We should have caught this
3336 * above, but there may a race condition that has since
3337 * destroyed the parent.
3339 * At this point, we don't know whether it's the source
3340 * that doesn't exist anymore, or whether the target
3341 * dataset doesn't exist.
3343 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
3344 "no such parent '%s'"), parent
);
3345 return (zfs_error(zhp
->zfs_hdl
, EZFS_NOENT
, errbuf
));
3348 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
3349 "source and target pools differ"));
3350 return (zfs_error(zhp
->zfs_hdl
, EZFS_CROSSTARGET
,
3354 return (zfs_standard_error(zhp
->zfs_hdl
, errno
,
3357 } else if (ZFS_IS_VOLUME(zhp
)) {
3358 ret
= zvol_create_link(zhp
->zfs_hdl
, target
);
3364 typedef struct promote_data
{
3365 char cb_mountpoint
[MAXPATHLEN
];
3366 const char *cb_target
;
3367 const char *cb_errbuf
;
3368 uint64_t cb_pivot_txg
;
3372 promote_snap_cb(zfs_handle_t
*zhp
, void *data
)
3374 promote_data_t
*pd
= data
;
3376 char snapname
[MAXPATHLEN
];
3379 /* We don't care about snapshots after the pivot point */
3380 if (zfs_prop_get_int(zhp
, ZFS_PROP_CREATETXG
) > pd
->cb_pivot_txg
) {
3385 /* Remove the device link if it's a zvol. */
3386 if (ZFS_IS_VOLUME(zhp
))
3387 (void) zvol_remove_link(zhp
->zfs_hdl
, zhp
->zfs_name
);
3389 /* Check for conflicting names */
3390 (void) strlcpy(snapname
, pd
->cb_target
, sizeof (snapname
));
3391 (void) strlcat(snapname
, strchr(zhp
->zfs_name
, '@'), sizeof (snapname
));
3392 szhp
= make_dataset_handle(zhp
->zfs_hdl
, snapname
);
3395 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
3396 "snapshot name '%s' from origin \n"
3397 "conflicts with '%s' from target"),
3398 zhp
->zfs_name
, snapname
);
3399 rv
= zfs_error(zhp
->zfs_hdl
, EZFS_EXISTS
, pd
->cb_errbuf
);
3406 promote_snap_done_cb(zfs_handle_t
*zhp
, void *data
)
3408 promote_data_t
*pd
= data
;
3410 /* We don't care about snapshots after the pivot point */
3411 if (zfs_prop_get_int(zhp
, ZFS_PROP_CREATETXG
) <= pd
->cb_pivot_txg
) {
3412 /* Create the device link if it's a zvol. */
3413 if (ZFS_IS_VOLUME(zhp
))
3414 (void) zvol_create_link(zhp
->zfs_hdl
, zhp
->zfs_name
);
3422 * Promotes the given clone fs to be the clone parent.
3425 zfs_promote(zfs_handle_t
*zhp
)
3427 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3428 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3429 char parent
[MAXPATHLEN
];
3436 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3437 "cannot promote '%s'"), zhp
->zfs_name
);
3439 if (zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
) {
3440 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3441 "snapshots can not be promoted"));
3442 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3445 (void) strlcpy(parent
, zhp
->zfs_dmustats
.dds_origin
, sizeof (parent
));
3446 if (parent
[0] == '\0') {
3447 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3448 "not a cloned filesystem"));
3449 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3451 cp
= strchr(parent
, '@');
3454 /* Walk the snapshots we will be moving */
3455 pzhp
= zfs_open(hdl
, zhp
->zfs_dmustats
.dds_origin
, ZFS_TYPE_SNAPSHOT
);
3458 pd
.cb_pivot_txg
= zfs_prop_get_int(pzhp
, ZFS_PROP_CREATETXG
);
3460 pd
.cb_target
= zhp
->zfs_name
;
3461 pd
.cb_errbuf
= errbuf
;
3462 pzhp
= zfs_open(hdl
, parent
, ZFS_TYPE_DATASET
);
3465 (void) zfs_prop_get(pzhp
, ZFS_PROP_MOUNTPOINT
, pd
.cb_mountpoint
,
3466 sizeof (pd
.cb_mountpoint
), NULL
, NULL
, 0, FALSE
);
3467 ret
= zfs_iter_snapshots(pzhp
, B_FALSE
, promote_snap_cb
, &pd
);
3473 /* issue the ioctl */
3474 (void) strlcpy(zc
.zc_value
, zhp
->zfs_dmustats
.dds_origin
,
3475 sizeof (zc
.zc_value
));
3476 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3477 ret
= zfs_ioctl(hdl
, ZFS_IOC_PROMOTE
, &zc
);
3480 int save_errno
= errno
;
3482 (void) zfs_iter_snapshots(pzhp
, B_FALSE
, promote_snap_done_cb
,
3486 switch (save_errno
) {
3489 * There is a conflicting snapshot name. We
3490 * should have caught this above, but they could
3491 * have renamed something in the mean time.
3493 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3494 "conflicting snapshot '%s' from parent '%s'"),
3495 zc
.zc_string
, parent
);
3496 return (zfs_error(hdl
, EZFS_EXISTS
, errbuf
));
3499 return (zfs_standard_error(hdl
, save_errno
, errbuf
));
3502 (void) zfs_iter_snapshots(zhp
, B_FALSE
, promote_snap_done_cb
,
3511 const char *cd_snapname
;
3516 zfs_create_link_cb(zfs_handle_t
*zhp
, void *arg
)
3518 struct createdata
*cd
= arg
;
3521 if (zhp
->zfs_type
== ZFS_TYPE_VOLUME
) {
3522 char name
[MAXPATHLEN
];
3524 (void) strlcpy(name
, zhp
->zfs_name
, sizeof (name
));
3525 (void) strlcat(name
, "@", sizeof (name
));
3526 (void) strlcat(name
, cd
->cd_snapname
, sizeof (name
));
3527 (void) zvol_create_link_common(zhp
->zfs_hdl
, name
,
3530 * NB: this is simply a best-effort. We don't want to
3531 * return an error, because then we wouldn't visit all
3536 ret
= zfs_iter_filesystems(zhp
, zfs_create_link_cb
, cd
);
3544 * Takes a snapshot of the given dataset.
3547 zfs_snapshot(libzfs_handle_t
*hdl
, const char *path
, boolean_t recursive
,
3551 char parent
[ZFS_MAXNAMELEN
];
3553 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3557 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3558 "cannot snapshot '%s'"), path
);
3560 /* validate the target name */
3561 if (!zfs_validate_name(hdl
, path
, ZFS_TYPE_SNAPSHOT
, B_TRUE
))
3562 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3565 if ((props
= zfs_valid_proplist(hdl
, ZFS_TYPE_SNAPSHOT
,
3566 props
, B_FALSE
, NULL
, errbuf
)) == NULL
)
3569 if (zcmd_write_src_nvlist(hdl
, &zc
, props
) != 0) {
3577 /* make sure the parent exists and is of the appropriate type */
3578 delim
= strchr(path
, '@');
3579 (void) strncpy(parent
, path
, delim
- path
);
3580 parent
[delim
- path
] = '\0';
3582 if ((zhp
= zfs_open(hdl
, parent
, ZFS_TYPE_FILESYSTEM
|
3583 ZFS_TYPE_VOLUME
)) == NULL
) {
3584 zcmd_free_nvlists(&zc
);
3588 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3589 (void) strlcpy(zc
.zc_value
, delim
+1, sizeof (zc
.zc_value
));
3590 if (ZFS_IS_VOLUME(zhp
))
3591 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3593 zc
.zc_objset_type
= DMU_OST_ZFS
;
3594 zc
.zc_cookie
= recursive
;
3595 ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_SNAPSHOT
, &zc
);
3597 zcmd_free_nvlists(&zc
);
3600 * if it was recursive, the one that actually failed will be in
3604 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3605 "cannot create snapshot '%s@%s'"), zc
.zc_name
, zc
.zc_value
);
3607 if (ret
== 0 && recursive
) {
3608 struct createdata cd
;
3610 cd
.cd_snapname
= delim
+ 1;
3611 cd
.cd_ifexists
= B_FALSE
;
3612 (void) zfs_iter_filesystems(zhp
, zfs_create_link_cb
, &cd
);
3614 if (ret
== 0 && zhp
->zfs_type
== ZFS_TYPE_VOLUME
) {
3615 ret
= zvol_create_link(zhp
->zfs_hdl
, path
);
3617 (void) zfs_standard_error(hdl
, errno
,
3618 dgettext(TEXT_DOMAIN
,
3619 "Volume successfully snapshotted, but device links "
3620 "were not created"));
3627 (void) zfs_standard_error(hdl
, errno
, errbuf
);
3635 * Destroy any more recent snapshots. We invoke this callback on any dependents
3636 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this
3637 * is a dependent and we should just destroy it without checking the transaction
3640 typedef struct rollback_data
{
3641 const char *cb_target
; /* the snapshot */
3642 uint64_t cb_create
; /* creation time reference */
3644 boolean_t cb_dependent
;
3649 rollback_destroy(zfs_handle_t
*zhp
, void *data
)
3651 rollback_data_t
*cbp
= data
;
3653 if (!cbp
->cb_dependent
) {
3654 if (strcmp(zhp
->zfs_name
, cbp
->cb_target
) != 0 &&
3655 zfs_get_type(zhp
) == ZFS_TYPE_SNAPSHOT
&&
3656 zfs_prop_get_int(zhp
, ZFS_PROP_CREATETXG
) >
3660 cbp
->cb_dependent
= B_TRUE
;
3661 cbp
->cb_error
|= zfs_iter_dependents(zhp
, B_FALSE
,
3662 rollback_destroy
, cbp
);
3663 cbp
->cb_dependent
= B_FALSE
;
3665 logstr
= zhp
->zfs_hdl
->libzfs_log_str
;
3666 zhp
->zfs_hdl
->libzfs_log_str
= NULL
;
3667 cbp
->cb_error
|= zfs_destroy(zhp
, B_FALSE
);
3668 zhp
->zfs_hdl
->libzfs_log_str
= logstr
;
3671 /* We must destroy this clone; first unmount it */
3672 prop_changelist_t
*clp
;
3674 clp
= changelist_gather(zhp
, ZFS_PROP_NAME
, 0,
3675 cbp
->cb_force
? MS_FORCE
: 0);
3676 if (clp
== NULL
|| changelist_prefix(clp
) != 0) {
3677 cbp
->cb_error
= B_TRUE
;
3681 if (zfs_destroy(zhp
, B_FALSE
) != 0)
3682 cbp
->cb_error
= B_TRUE
;
3684 changelist_remove(clp
, zhp
->zfs_name
);
3685 (void) changelist_postfix(clp
);
3686 changelist_free(clp
);
3694 * Given a dataset, rollback to a specific snapshot, discarding any
3695 * data changes since then and making it the active dataset.
3697 * Any snapshots more recent than the target are destroyed, along with
3701 zfs_rollback(zfs_handle_t
*zhp
, zfs_handle_t
*snap
, boolean_t force
)
3703 rollback_data_t cb
= { 0 };
3705 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3706 boolean_t restore_resv
= 0;
3707 uint64_t old_volsize
= 0, new_volsize
;
3708 zfs_prop_t resv_prop
= { 0 };
3710 assert(zhp
->zfs_type
== ZFS_TYPE_FILESYSTEM
||
3711 zhp
->zfs_type
== ZFS_TYPE_VOLUME
);
3714 * Destroy all recent snapshots and their dependents.
3716 cb
.cb_force
= force
;
3717 cb
.cb_target
= snap
->zfs_name
;
3718 cb
.cb_create
= zfs_prop_get_int(snap
, ZFS_PROP_CREATETXG
);
3719 (void) zfs_iter_children(zhp
, rollback_destroy
, &cb
);
3725 * Now that we have verified that the snapshot is the latest,
3726 * rollback to the given snapshot.
3729 if (zhp
->zfs_type
== ZFS_TYPE_VOLUME
) {
3730 if (zvol_remove_link(zhp
->zfs_hdl
, zhp
->zfs_name
) != 0)
3732 if (zfs_which_resv_prop(zhp
, &resv_prop
) < 0)
3734 old_volsize
= zfs_prop_get_int(zhp
, ZFS_PROP_VOLSIZE
);
3736 (old_volsize
== zfs_prop_get_int(zhp
, resv_prop
));
3739 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3741 if (ZFS_IS_VOLUME(zhp
))
3742 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3744 zc
.zc_objset_type
= DMU_OST_ZFS
;
3747 * We rely on zfs_iter_children() to verify that there are no
3748 * newer snapshots for the given dataset. Therefore, we can
3749 * simply pass the name on to the ioctl() call. There is still
3750 * an unlikely race condition where the user has taken a
3751 * snapshot since we verified that this was the most recent.
3754 if ((err
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_ROLLBACK
, &zc
)) != 0) {
3755 (void) zfs_standard_error_fmt(zhp
->zfs_hdl
, errno
,
3756 dgettext(TEXT_DOMAIN
, "cannot rollback '%s'"),
3762 * For volumes, if the pre-rollback volsize matched the pre-
3763 * rollback reservation and the volsize has changed then set
3764 * the reservation property to the post-rollback volsize.
3765 * Make a new handle since the rollback closed the dataset.
3767 if ((zhp
->zfs_type
== ZFS_TYPE_VOLUME
) &&
3768 (zhp
= make_dataset_handle(zhp
->zfs_hdl
, zhp
->zfs_name
))) {
3769 if ((err
= zvol_create_link(zhp
->zfs_hdl
, zhp
->zfs_name
))) {
3774 new_volsize
= zfs_prop_get_int(zhp
, ZFS_PROP_VOLSIZE
);
3775 if (old_volsize
!= new_volsize
)
3776 err
= zfs_prop_set_int(zhp
, resv_prop
,
3785 * Renames the given dataset.
3788 zfs_rename(zfs_handle_t
*zhp
, const char *target
, boolean_t recursive
,
3789 boolean_t force_unmount
)
3792 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3794 prop_changelist_t
*cl
= NULL
;
3795 zfs_handle_t
*zhrp
= NULL
;
3796 char *parentname
= NULL
;
3797 char parent
[ZFS_MAXNAMELEN
];
3798 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3801 /* if we have the same exact name, just return success */
3802 if (strcmp(zhp
->zfs_name
, target
) == 0)
3805 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3806 "cannot rename to '%s'"), target
);
3809 * Make sure the target name is valid
3811 if (zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
) {
3812 if ((strchr(target
, '@') == NULL
) ||
3815 * Snapshot target name is abbreviated,
3816 * reconstruct full dataset name
3818 (void) strlcpy(parent
, zhp
->zfs_name
,
3820 delim
= strchr(parent
, '@');
3821 if (strchr(target
, '@') == NULL
)
3825 (void) strlcat(parent
, target
, sizeof (parent
));
3829 * Make sure we're renaming within the same dataset.
3831 delim
= strchr(target
, '@');
3832 if (strncmp(zhp
->zfs_name
, target
, delim
- target
)
3833 != 0 || zhp
->zfs_name
[delim
- target
] != '@') {
3834 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3835 "snapshots must be part of same "
3837 return (zfs_error(hdl
, EZFS_CROSSTARGET
,
3841 if (!zfs_validate_name(hdl
, target
, zhp
->zfs_type
, B_TRUE
))
3842 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3845 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3846 "recursive rename must be a snapshot"));
3847 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3850 if (!zfs_validate_name(hdl
, target
, zhp
->zfs_type
, B_TRUE
))
3851 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3853 /* validate parents */
3854 if (check_parents(hdl
, target
, NULL
, B_FALSE
, NULL
) != 0)
3857 /* make sure we're in the same pool */
3858 verify((delim
= strchr(target
, '/')) != NULL
);
3859 if (strncmp(zhp
->zfs_name
, target
, delim
- target
) != 0 ||
3860 zhp
->zfs_name
[delim
- target
] != '/') {
3861 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3862 "datasets must be within same pool"));
3863 return (zfs_error(hdl
, EZFS_CROSSTARGET
, errbuf
));
3866 /* new name cannot be a child of the current dataset name */
3867 if (is_descendant(zhp
->zfs_name
, target
)) {
3868 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3869 "New dataset name cannot be a descendant of "
3870 "current dataset name"));
3871 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3875 (void) snprintf(errbuf
, sizeof (errbuf
),
3876 dgettext(TEXT_DOMAIN
, "cannot rename '%s'"), zhp
->zfs_name
);
3878 if (getzoneid() == GLOBAL_ZONEID
&&
3879 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
)) {
3880 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3881 "dataset is used in a non-global zone"));
3882 return (zfs_error(hdl
, EZFS_ZONED
, errbuf
));
3886 struct destroydata dd
;
3888 parentname
= zfs_strdup(zhp
->zfs_hdl
, zhp
->zfs_name
);
3889 if (parentname
== NULL
) {
3893 delim
= strchr(parentname
, '@');
3895 zhrp
= zfs_open(zhp
->zfs_hdl
, parentname
, ZFS_TYPE_DATASET
);
3901 dd
.snapname
= delim
+ 1;
3903 /* We remove any zvol links prior to renaming them */
3904 verify(nvlist_alloc(&dd
.nvl
, NV_UNIQUE_NAME
, 0) == 0);
3905 ret
= zfs_iter_filesystems(zhrp
, zfs_check_snap_cb
, &dd
);
3906 nvlist_free(dd
.nvl
);
3911 if ((cl
= changelist_gather(zhp
, ZFS_PROP_NAME
, 0,
3912 force_unmount
? MS_FORCE
: 0)) == NULL
)
3915 if (changelist_haszonedchild(cl
)) {
3916 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3917 "child dataset with inherited mountpoint is used "
3918 "in a non-global zone"));
3919 (void) zfs_error(hdl
, EZFS_ZONED
, errbuf
);
3924 if ((ret
= changelist_prefix(cl
)) != 0)
3928 if (ZFS_IS_VOLUME(zhp
))
3929 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3931 zc
.zc_objset_type
= DMU_OST_ZFS
;
3933 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3934 (void) strlcpy(zc
.zc_value
, target
, sizeof (zc
.zc_value
));
3936 zc
.zc_cookie
= recursive
;
3938 if ((ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_RENAME
, &zc
)) != 0) {
3940 * if it was recursive, the one that actually failed will
3943 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3944 "cannot rename '%s'"), zc
.zc_name
);
3946 if (recursive
&& errno
== EEXIST
) {
3947 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3948 "a child dataset already has a snapshot "
3949 "with the new name"));
3950 (void) zfs_error(hdl
, EZFS_EXISTS
, errbuf
);
3952 (void) zfs_standard_error(zhp
->zfs_hdl
, errno
, errbuf
);
3956 * On failure, we still want to remount any filesystems that
3957 * were previously mounted, so we don't alter the system state.
3960 struct createdata cd
;
3962 /* only create links for datasets that had existed */
3963 cd
.cd_snapname
= delim
+ 1;
3964 cd
.cd_ifexists
= B_TRUE
;
3965 (void) zfs_iter_filesystems(zhrp
, zfs_create_link_cb
,
3968 (void) changelist_postfix(cl
);
3972 struct createdata cd
;
3974 /* only create links for datasets that had existed */
3975 cd
.cd_snapname
= strchr(target
, '@') + 1;
3976 cd
.cd_ifexists
= B_TRUE
;
3977 ret
= zfs_iter_filesystems(zhrp
, zfs_create_link_cb
,
3980 changelist_rename(cl
, zfs_get_name(zhp
), target
);
3981 ret
= changelist_postfix(cl
);
3993 changelist_free(cl
);
3999 * Given a zvol dataset, issue the ioctl to create the appropriate minor node,
4000 * and wait briefly for udev to create the /dev link.
4003 zvol_create_link(libzfs_handle_t
*hdl
, const char *dataset
)
4005 return (zvol_create_link_common(hdl
, dataset
, B_FALSE
));
4009 zvol_create_link_common(libzfs_handle_t
*hdl
, const char *dataset
, int ifexists
)
4011 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
4012 char path
[MAXPATHLEN
];
4015 (void) strlcpy(zc
.zc_name
, dataset
, sizeof (zc
.zc_name
));
4018 * Issue the appropriate ioctl.
4020 if (ioctl(hdl
->libzfs_fd
, ZFS_IOC_CREATE_MINOR
, &zc
) != 0) {
4024 * Silently ignore the case where the link already
4025 * exists. This allows 'zfs volinit' to be run multiple
4026 * times without errors.
4032 * snapdev set to hidden :
4033 * device creation was not permitted (see zvol.c)
4034 * ignore error quietly
4040 * Dataset does not exist in the kernel. If we
4041 * don't care (see zfs_rename), then ignore the
4051 return (zfs_standard_error_fmt(hdl
, errno
,
4052 dgettext(TEXT_DOMAIN
, "cannot create device links "
4053 "for '%s'"), dataset
));
4058 * Wait up to 10 seconds for udev to create the device.
4060 (void) snprintf(path
, sizeof (path
), "%s/%s", ZVOL_DIR
, dataset
);
4061 error
= zpool_label_disk_wait(path
, 10000);
4063 (void) printf(gettext("%s may not be immediately "
4064 "available\n"), path
);
4070 * Remove a minor node for the given zvol and the associated /dev links.
4073 zvol_remove_link(libzfs_handle_t
*hdl
, const char *dataset
)
4075 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
4076 int timeout
= 3000; /* in milliseconds */
4080 (void) strlcpy(zc
.zc_name
, dataset
, sizeof (zc
.zc_name
));
4083 * Due to concurrent updates by udev the device may be reported as
4084 * busy. In this case don't immediately fail. Instead briefly delay
4085 * and retry the ioctl() which is now likely to succeed. If unable
4086 * remove the link after timeout milliseconds return the failure.
4088 for (i
= 0; i
< timeout
; i
++) {
4089 error
= ioctl(hdl
->libzfs_fd
, ZFS_IOC_REMOVE_MINOR
, &zc
);
4090 if (error
&& errno
== EBUSY
) {
4102 * Silently ignore the case where the link no longer
4103 * exists, so that 'zfs volfini' can be run multiple
4104 * times without errors.
4109 return (zfs_standard_error_fmt(hdl
, errno
,
4110 dgettext(TEXT_DOMAIN
, "cannot remove device "
4111 "links for '%s': %s"), dataset
, strerror(errno
)));
4119 zfs_get_user_props(zfs_handle_t
*zhp
)
4121 return (zhp
->zfs_user_props
);
4125 * This function is used by 'zfs list' to determine the exact set of columns to
4126 * display, and their maximum widths. This does two main things:
4128 * - If this is a list of all properties, then expand the list to include
4129 * all native properties, and set a flag so that for each dataset we look
4130 * for new unique user properties and add them to the list.
4132 * - For non fixed-width properties, keep track of the maximum width seen
4133 * so that we can size the column appropriately. If the user has
4134 * requested received property values, we also need to compute the width
4135 * of the RECEIVED column.
4138 zfs_expand_proplist(zfs_handle_t
*zhp
, zprop_list_t
**plp
, boolean_t received
)
4140 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
4141 zprop_list_t
*entry
;
4142 zprop_list_t
**last
, **start
;
4143 nvlist_t
*userprops
, *propval
;
4146 char buf
[ZFS_MAXPROPLEN
];
4148 if (zprop_expand_list(hdl
, plp
, ZFS_TYPE_DATASET
) != 0)
4151 userprops
= zfs_get_user_props(zhp
);
4154 if (entry
->pl_all
&& nvlist_next_nvpair(userprops
, NULL
) != NULL
) {
4156 * Go through and add any user properties as necessary. We
4157 * start by incrementing our list pointer to the first
4158 * non-native property.
4161 while (*start
!= NULL
) {
4162 if ((*start
)->pl_prop
== ZPROP_INVAL
)
4164 start
= &(*start
)->pl_next
;
4168 while ((elem
= nvlist_next_nvpair(userprops
, elem
)) != NULL
) {
4170 * See if we've already found this property in our list.
4172 for (last
= start
; *last
!= NULL
;
4173 last
= &(*last
)->pl_next
) {
4174 if (strcmp((*last
)->pl_user_prop
,
4175 nvpair_name(elem
)) == 0)
4179 if (*last
== NULL
) {
4180 if ((entry
= zfs_alloc(hdl
,
4181 sizeof (zprop_list_t
))) == NULL
||
4182 ((entry
->pl_user_prop
= zfs_strdup(hdl
,
4183 nvpair_name(elem
)))) == NULL
) {
4188 entry
->pl_prop
= ZPROP_INVAL
;
4189 entry
->pl_width
= strlen(nvpair_name(elem
));
4190 entry
->pl_all
= B_TRUE
;
4197 * Now go through and check the width of any non-fixed columns
4199 for (entry
= *plp
; entry
!= NULL
; entry
= entry
->pl_next
) {
4200 if (entry
->pl_fixed
)
4203 if (entry
->pl_prop
!= ZPROP_INVAL
) {
4204 if (zfs_prop_get(zhp
, entry
->pl_prop
,
4205 buf
, sizeof (buf
), NULL
, NULL
, 0, B_FALSE
) == 0) {
4206 if (strlen(buf
) > entry
->pl_width
)
4207 entry
->pl_width
= strlen(buf
);
4209 if (received
&& zfs_prop_get_recvd(zhp
,
4210 zfs_prop_to_name(entry
->pl_prop
),
4211 buf
, sizeof (buf
), B_FALSE
) == 0)
4212 if (strlen(buf
) > entry
->pl_recvd_width
)
4213 entry
->pl_recvd_width
= strlen(buf
);
4215 if (nvlist_lookup_nvlist(userprops
, entry
->pl_user_prop
,
4217 verify(nvlist_lookup_string(propval
,
4218 ZPROP_VALUE
, &strval
) == 0);
4219 if (strlen(strval
) > entry
->pl_width
)
4220 entry
->pl_width
= strlen(strval
);
4222 if (received
&& zfs_prop_get_recvd(zhp
,
4223 entry
->pl_user_prop
,
4224 buf
, sizeof (buf
), B_FALSE
) == 0)
4225 if (strlen(buf
) > entry
->pl_recvd_width
)
4226 entry
->pl_recvd_width
= strlen(buf
);
4234 zfs_prune_proplist(zfs_handle_t
*zhp
, uint8_t *props
)
4239 * Keep a reference to the props-table against which we prune the
4242 zhp
->zfs_props_table
= props
;
4244 curr
= nvlist_next_nvpair(zhp
->zfs_props
, NULL
);
4247 zfs_prop_t zfs_prop
= zfs_name_to_prop(nvpair_name(curr
));
4248 nvpair_t
*next
= nvlist_next_nvpair(zhp
->zfs_props
, curr
);
4251 * User properties will result in ZPROP_INVAL, and since we
4252 * only know how to prune standard ZFS properties, we always
4253 * leave these in the list. This can also happen if we
4254 * encounter an unknown DSL property (when running older
4255 * software, for example).
4257 if (zfs_prop
!= ZPROP_INVAL
&& props
[zfs_prop
] == B_FALSE
)
4258 (void) nvlist_remove(zhp
->zfs_props
,
4259 nvpair_name(curr
), nvpair_type(curr
));
4265 zfs_smb_acl_mgmt(libzfs_handle_t
*hdl
, char *dataset
, char *path
,
4266 zfs_smb_acl_op_t cmd
, char *resource1
, char *resource2
)
4268 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
4269 nvlist_t
*nvlist
= NULL
;
4272 (void) strlcpy(zc
.zc_name
, dataset
, sizeof (zc
.zc_name
));
4273 (void) strlcpy(zc
.zc_value
, path
, sizeof (zc
.zc_value
));
4274 zc
.zc_cookie
= (uint64_t)cmd
;
4276 if (cmd
== ZFS_SMB_ACL_RENAME
) {
4277 if (nvlist_alloc(&nvlist
, NV_UNIQUE_NAME
, 0) != 0) {
4278 (void) no_memory(hdl
);
4284 case ZFS_SMB_ACL_ADD
:
4285 case ZFS_SMB_ACL_REMOVE
:
4286 (void) strlcpy(zc
.zc_string
, resource1
, sizeof (zc
.zc_string
));
4288 case ZFS_SMB_ACL_RENAME
:
4289 if (nvlist_add_string(nvlist
, ZFS_SMB_ACL_SRC
,
4291 (void) no_memory(hdl
);
4294 if (nvlist_add_string(nvlist
, ZFS_SMB_ACL_TARGET
,
4296 (void) no_memory(hdl
);
4299 if (zcmd_write_src_nvlist(hdl
, &zc
, nvlist
) != 0) {
4300 nvlist_free(nvlist
);
4304 case ZFS_SMB_ACL_PURGE
:
4309 error
= ioctl(hdl
->libzfs_fd
, ZFS_IOC_SMB_ACL
, &zc
);
4311 nvlist_free(nvlist
);
4316 zfs_smb_acl_add(libzfs_handle_t
*hdl
, char *dataset
,
4317 char *path
, char *resource
)
4319 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_ADD
,
4324 zfs_smb_acl_remove(libzfs_handle_t
*hdl
, char *dataset
,
4325 char *path
, char *resource
)
4327 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_REMOVE
,
4332 zfs_smb_acl_purge(libzfs_handle_t
*hdl
, char *dataset
, char *path
)
4334 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_PURGE
,
4339 zfs_smb_acl_rename(libzfs_handle_t
*hdl
, char *dataset
, char *path
,
4340 char *oldname
, char *newname
)
4342 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_RENAME
,
4347 zfs_userspace(zfs_handle_t
*zhp
, zfs_userquota_prop_t type
,
4348 zfs_userspace_cb_t func
, void *arg
)
4350 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
4351 zfs_useracct_t buf
[100];
4352 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
4355 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
4357 zc
.zc_objset_type
= type
;
4358 zc
.zc_nvlist_dst
= (uintptr_t)buf
;
4361 zfs_useracct_t
*zua
= buf
;
4363 zc
.zc_nvlist_dst_size
= sizeof (buf
);
4364 if (zfs_ioctl(hdl
, ZFS_IOC_USERSPACE_MANY
, &zc
) != 0) {
4365 char errbuf
[ZFS_MAXNAMELEN
+ 32];
4367 (void) snprintf(errbuf
, sizeof (errbuf
),
4368 dgettext(TEXT_DOMAIN
,
4369 "cannot get used/quota for %s"), zc
.zc_name
);
4370 return (zfs_standard_error_fmt(hdl
, errno
, errbuf
));
4372 if (zc
.zc_nvlist_dst_size
== 0)
4375 while (zc
.zc_nvlist_dst_size
> 0) {
4376 if ((ret
= func(arg
, zua
->zu_domain
, zua
->zu_rid
,
4377 zua
->zu_space
)) != 0)
4380 zc
.zc_nvlist_dst_size
-= sizeof (zfs_useracct_t
);
4388 zfs_hold(zfs_handle_t
*zhp
, const char *snapname
, const char *tag
,
4389 boolean_t recursive
, boolean_t temphold
, boolean_t enoent_ok
,
4390 int cleanup_fd
, uint64_t dsobj
, uint64_t createtxg
)
4392 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
4393 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
4395 ASSERT(!recursive
|| dsobj
== 0);
4397 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
4398 (void) strlcpy(zc
.zc_value
, snapname
, sizeof (zc
.zc_value
));
4399 if (strlcpy(zc
.zc_string
, tag
, sizeof (zc
.zc_string
))
4400 >= sizeof (zc
.zc_string
))
4401 return (zfs_error(hdl
, EZFS_TAGTOOLONG
, tag
));
4402 zc
.zc_cookie
= recursive
;
4403 zc
.zc_temphold
= temphold
;
4404 zc
.zc_cleanup_fd
= cleanup_fd
;
4405 zc
.zc_sendobj
= dsobj
;
4406 zc
.zc_createtxg
= createtxg
;
4408 if (zfs_ioctl(hdl
, ZFS_IOC_HOLD
, &zc
) != 0) {
4409 char errbuf
[ZFS_MAXNAMELEN
+32];
4412 * if it was recursive, the one that actually failed will be in
4415 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
4416 "cannot hold '%s@%s'"), zc
.zc_name
, snapname
);
4420 * Temporary tags wind up having the ds object id
4421 * prepended. So even if we passed the length check
4422 * above, it's still possible for the tag to wind
4423 * up being slightly too long.
4425 return (zfs_error(hdl
, EZFS_TAGTOOLONG
, errbuf
));
4427 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
4428 "pool must be upgraded"));
4429 return (zfs_error(hdl
, EZFS_BADVERSION
, errbuf
));
4431 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
4433 return (zfs_error(hdl
, EZFS_REFTAG_HOLD
, errbuf
));
4439 return (zfs_standard_error_fmt(hdl
, errno
, errbuf
));
4447 zfs_release(zfs_handle_t
*zhp
, const char *snapname
, const char *tag
,
4448 boolean_t recursive
)
4450 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
4451 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
4453 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
4454 (void) strlcpy(zc
.zc_value
, snapname
, sizeof (zc
.zc_value
));
4455 if (strlcpy(zc
.zc_string
, tag
, sizeof (zc
.zc_string
))
4456 >= sizeof (zc
.zc_string
))
4457 return (zfs_error(hdl
, EZFS_TAGTOOLONG
, tag
));
4458 zc
.zc_cookie
= recursive
;
4460 if (zfs_ioctl(hdl
, ZFS_IOC_RELEASE
, &zc
) != 0) {
4461 char errbuf
[ZFS_MAXNAMELEN
+32];
4464 * if it was recursive, the one that actually failed will be in
4467 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
4468 "cannot release '%s' from '%s@%s'"), tag
, zc
.zc_name
,
4472 return (zfs_error(hdl
, EZFS_REFTAG_RELE
, errbuf
));
4474 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
4475 "pool must be upgraded"));
4476 return (zfs_error(hdl
, EZFS_BADVERSION
, errbuf
));
4478 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
4480 return (zfs_standard_error_fmt(hdl
, errno
, errbuf
));
4488 zfs_get_fsacl(zfs_handle_t
*zhp
, nvlist_t
**nvl
)
4490 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
4491 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
4495 char errbuf
[ZFS_MAXNAMELEN
+32];
4497 assert(zhp
->zfs_type
== ZFS_TYPE_VOLUME
||
4498 zhp
->zfs_type
== ZFS_TYPE_FILESYSTEM
);
4502 nvbuf
= malloc(nvsz
);
4503 if (nvbuf
== NULL
) {
4504 err
= (zfs_error(hdl
, EZFS_NOMEM
, strerror(errno
)));
4508 zc
.zc_nvlist_dst_size
= nvsz
;
4509 zc
.zc_nvlist_dst
= (uintptr_t)nvbuf
;
4511 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, ZFS_MAXNAMELEN
);
4513 if (ioctl(hdl
->libzfs_fd
, ZFS_IOC_GET_FSACL
, &zc
) != 0) {
4514 (void) snprintf(errbuf
, sizeof (errbuf
),
4515 dgettext(TEXT_DOMAIN
, "cannot get permissions on '%s'"),
4520 nvsz
= zc
.zc_nvlist_dst_size
;
4524 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
4525 "pool must be upgraded"));
4526 err
= zfs_error(hdl
, EZFS_BADVERSION
, errbuf
);
4529 err
= zfs_error(hdl
, EZFS_BADTYPE
, errbuf
);
4532 err
= zfs_error(hdl
, EZFS_NOENT
, errbuf
);
4535 err
= zfs_standard_error_fmt(hdl
, errno
, errbuf
);
4540 int rc
= nvlist_unpack(nvbuf
, zc
.zc_nvlist_dst_size
, nvl
, 0);
4542 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(
4543 TEXT_DOMAIN
, "cannot get permissions on '%s'"),
4545 err
= zfs_standard_error_fmt(hdl
, rc
, errbuf
);
4555 zfs_set_fsacl(zfs_handle_t
*zhp
, boolean_t un
, nvlist_t
*nvl
)
4557 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
4558 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
4560 char errbuf
[ZFS_MAXNAMELEN
+32];
4564 assert(zhp
->zfs_type
== ZFS_TYPE_VOLUME
||
4565 zhp
->zfs_type
== ZFS_TYPE_FILESYSTEM
);
4567 err
= nvlist_size(nvl
, &nvsz
, NV_ENCODE_NATIVE
);
4570 nvbuf
= malloc(nvsz
);
4572 err
= nvlist_pack(nvl
, &nvbuf
, &nvsz
, NV_ENCODE_NATIVE
, 0);
4575 zc
.zc_nvlist_src_size
= nvsz
;
4576 zc
.zc_nvlist_src
= (uintptr_t)nvbuf
;
4577 zc
.zc_perm_action
= un
;
4579 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
4581 if (zfs_ioctl(hdl
, ZFS_IOC_SET_FSACL
, &zc
) != 0) {
4582 (void) snprintf(errbuf
, sizeof (errbuf
),
4583 dgettext(TEXT_DOMAIN
, "cannot set permissions on '%s'"),
4587 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
4588 "pool must be upgraded"));
4589 err
= zfs_error(hdl
, EZFS_BADVERSION
, errbuf
);
4592 err
= zfs_error(hdl
, EZFS_BADTYPE
, errbuf
);
4595 err
= zfs_error(hdl
, EZFS_NOENT
, errbuf
);
4598 err
= zfs_standard_error_fmt(hdl
, errno
, errbuf
);
4609 zfs_get_holds(zfs_handle_t
*zhp
, nvlist_t
**nvl
)
4611 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
4612 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
4616 char errbuf
[ZFS_MAXNAMELEN
+32];
4618 assert(zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
);
4622 nvbuf
= malloc(nvsz
);
4623 if (nvbuf
== NULL
) {
4624 err
= (zfs_error(hdl
, EZFS_NOMEM
, strerror(errno
)));
4628 zc
.zc_nvlist_dst_size
= nvsz
;
4629 zc
.zc_nvlist_dst
= (uintptr_t)nvbuf
;
4631 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, ZFS_MAXNAMELEN
);
4633 if (zfs_ioctl(hdl
, ZFS_IOC_GET_HOLDS
, &zc
) != 0) {
4634 (void) snprintf(errbuf
, sizeof (errbuf
),
4635 dgettext(TEXT_DOMAIN
, "cannot get holds for '%s'"),
4640 nvsz
= zc
.zc_nvlist_dst_size
;
4644 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
4645 "pool must be upgraded"));
4646 err
= zfs_error(hdl
, EZFS_BADVERSION
, errbuf
);
4649 err
= zfs_error(hdl
, EZFS_BADTYPE
, errbuf
);
4652 err
= zfs_error(hdl
, EZFS_NOENT
, errbuf
);
4655 err
= zfs_standard_error_fmt(hdl
, errno
, errbuf
);
4660 int rc
= nvlist_unpack(nvbuf
, zc
.zc_nvlist_dst_size
, nvl
, 0);
4662 (void) snprintf(errbuf
, sizeof (errbuf
),
4663 dgettext(TEXT_DOMAIN
, "cannot get holds for '%s'"),
4665 err
= zfs_standard_error_fmt(hdl
, rc
, errbuf
);
4675 zvol_volsize_to_reservation(uint64_t volsize
, nvlist_t
*props
)
4678 uint64_t nblocks
, volblocksize
;
4682 if (nvlist_lookup_string(props
,
4683 zfs_prop_to_name(ZFS_PROP_COPIES
), &strval
) == 0)
4684 ncopies
= atoi(strval
);
4687 if (nvlist_lookup_uint64(props
,
4688 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE
),
4689 &volblocksize
) != 0)
4690 volblocksize
= ZVOL_DEFAULT_BLOCKSIZE
;
4691 nblocks
= volsize
/volblocksize
;
4692 /* start with metadnode L0-L6 */
4694 /* calculate number of indirects */
4695 while (nblocks
> 1) {
4696 nblocks
+= DNODES_PER_LEVEL
- 1;
4697 nblocks
/= DNODES_PER_LEVEL
;
4700 numdb
*= MIN(SPA_DVAS_PER_BP
, ncopies
+ 1);
4703 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't
4704 * compressed, but in practice they compress down to about
4707 numdb
*= 1ULL << DN_MAX_INDBLKSHIFT
;