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.
37 #include <sys/mntent.h>
38 #include <sys/mount.h>
46 #include <directory.h>
48 #include <sys/dnode.h>
53 #include "zfs_namecheck.h"
55 #include "libzfs_impl.h"
56 #include "zfs_deleg.h"
58 static int userquota_propname_decode(const char *propname
, boolean_t zoned
,
59 zfs_userquota_prop_t
*typep
, char *domain
, int domainlen
, uint64_t *ridp
);
62 * Given a single type (not a mask of types), return the type in a human
66 zfs_type_to_name(zfs_type_t type
)
69 case ZFS_TYPE_FILESYSTEM
:
70 return (dgettext(TEXT_DOMAIN
, "filesystem"));
71 case ZFS_TYPE_SNAPSHOT
:
72 return (dgettext(TEXT_DOMAIN
, "snapshot"));
74 return (dgettext(TEXT_DOMAIN
, "volume"));
83 * Validate a ZFS path. This is used even before trying to open the dataset, to
84 * provide a more meaningful error message. We call zfs_error_aux() to
85 * explain exactly why the name was not valid.
88 zfs_validate_name(libzfs_handle_t
*hdl
, const char *path
, int type
,
94 if (dataset_namecheck(path
, &why
, &what
) != 0) {
97 case NAME_ERR_TOOLONG
:
98 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
102 case NAME_ERR_LEADING_SLASH
:
103 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
104 "leading slash in name"));
107 case NAME_ERR_EMPTY_COMPONENT
:
108 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
109 "empty component in name"));
112 case NAME_ERR_TRAILING_SLASH
:
113 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
114 "trailing slash in name"));
117 case NAME_ERR_INVALCHAR
:
119 dgettext(TEXT_DOMAIN
, "invalid character "
120 "'%c' in name"), what
);
123 case NAME_ERR_MULTIPLE_AT
:
124 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
125 "multiple '@' delimiters in name"));
128 case NAME_ERR_NOLETTER
:
129 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
130 "pool doesn't begin with a letter"));
133 case NAME_ERR_RESERVED
:
134 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
135 "name is reserved"));
138 case NAME_ERR_DISKLIKE
:
139 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
140 "reserved disk name"));
150 if (!(type
& ZFS_TYPE_SNAPSHOT
) && strchr(path
, '@') != NULL
) {
152 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
153 "snapshot delimiter '@' in filesystem name"));
157 if (type
== ZFS_TYPE_SNAPSHOT
&& strchr(path
, '@') == NULL
) {
159 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
160 "missing '@' delimiter in snapshot name"));
164 if (modifying
&& strchr(path
, '%') != NULL
) {
166 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
167 "invalid character %c in name"), '%');
175 zfs_name_valid(const char *name
, zfs_type_t type
)
177 if (type
== ZFS_TYPE_POOL
)
178 return (zpool_name_valid(NULL
, B_FALSE
, name
));
179 return (zfs_validate_name(NULL
, name
, type
, B_FALSE
));
183 * This function takes the raw DSL properties, and filters out the user-defined
184 * properties into a separate nvlist.
187 process_user_props(zfs_handle_t
*zhp
, nvlist_t
*props
)
189 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
194 if (nvlist_alloc(&nvl
, NV_UNIQUE_NAME
, 0) != 0) {
195 (void) no_memory(hdl
);
200 while ((elem
= nvlist_next_nvpair(props
, elem
)) != NULL
) {
201 if (!zfs_prop_user(nvpair_name(elem
)))
204 verify(nvpair_value_nvlist(elem
, &propval
) == 0);
205 if (nvlist_add_nvlist(nvl
, nvpair_name(elem
), propval
) != 0) {
207 (void) no_memory(hdl
);
215 static zpool_handle_t
*
216 zpool_add_handle(zfs_handle_t
*zhp
, const char *pool_name
)
218 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
221 if ((zph
= zpool_open_canfail(hdl
, pool_name
)) != NULL
) {
222 if (hdl
->libzfs_pool_handles
!= NULL
)
223 zph
->zpool_next
= hdl
->libzfs_pool_handles
;
224 hdl
->libzfs_pool_handles
= zph
;
229 static zpool_handle_t
*
230 zpool_find_handle(zfs_handle_t
*zhp
, const char *pool_name
, int len
)
232 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
233 zpool_handle_t
*zph
= hdl
->libzfs_pool_handles
;
235 while ((zph
!= NULL
) &&
236 (strncmp(pool_name
, zpool_get_name(zph
), len
) != 0))
237 zph
= zph
->zpool_next
;
242 * Returns a handle to the pool that contains the provided dataset.
243 * If a handle to that pool already exists then that handle is returned.
244 * Otherwise, a new handle is created and added to the list of handles.
246 static zpool_handle_t
*
247 zpool_handle(zfs_handle_t
*zhp
)
253 len
= strcspn(zhp
->zfs_name
, "/@") + 1;
254 pool_name
= zfs_alloc(zhp
->zfs_hdl
, len
);
255 (void) strlcpy(pool_name
, zhp
->zfs_name
, len
);
257 zph
= zpool_find_handle(zhp
, pool_name
, len
);
259 zph
= zpool_add_handle(zhp
, pool_name
);
266 zpool_free_handles(libzfs_handle_t
*hdl
)
268 zpool_handle_t
*next
, *zph
= hdl
->libzfs_pool_handles
;
270 while (zph
!= NULL
) {
271 next
= zph
->zpool_next
;
275 hdl
->libzfs_pool_handles
= NULL
;
279 * Utility function to gather stats (objset and zpl) for the given object.
282 get_stats_ioctl(zfs_handle_t
*zhp
, zfs_cmd_t
*zc
)
284 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
286 (void) strlcpy(zc
->zc_name
, zhp
->zfs_name
, sizeof (zc
->zc_name
));
288 while (ioctl(hdl
->libzfs_fd
, ZFS_IOC_OBJSET_STATS
, zc
) != 0) {
289 if (errno
== ENOMEM
) {
290 if (zcmd_expand_dst_nvlist(hdl
, zc
) != 0) {
301 * Utility function to get the received properties of the given object.
304 get_recvd_props_ioctl(zfs_handle_t
*zhp
)
306 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
307 nvlist_t
*recvdprops
;
308 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
311 if (zcmd_alloc_dst_nvlist(hdl
, &zc
, 0) != 0)
314 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
316 while (ioctl(hdl
->libzfs_fd
, ZFS_IOC_OBJSET_RECVD_PROPS
, &zc
) != 0) {
317 if (errno
== ENOMEM
) {
318 if (zcmd_expand_dst_nvlist(hdl
, &zc
) != 0) {
322 zcmd_free_nvlists(&zc
);
327 err
= zcmd_read_dst_nvlist(zhp
->zfs_hdl
, &zc
, &recvdprops
);
328 zcmd_free_nvlists(&zc
);
332 nvlist_free(zhp
->zfs_recvd_props
);
333 zhp
->zfs_recvd_props
= recvdprops
;
339 put_stats_zhdl(zfs_handle_t
*zhp
, zfs_cmd_t
*zc
)
341 nvlist_t
*allprops
, *userprops
;
343 zhp
->zfs_dmustats
= zc
->zc_objset_stats
; /* structure assignment */
345 if (zcmd_read_dst_nvlist(zhp
->zfs_hdl
, zc
, &allprops
) != 0) {
350 * XXX Why do we store the user props separately, in addition to
351 * storing them in zfs_props?
353 if ((userprops
= process_user_props(zhp
, allprops
)) == NULL
) {
354 nvlist_free(allprops
);
358 nvlist_free(zhp
->zfs_props
);
359 nvlist_free(zhp
->zfs_user_props
);
361 zhp
->zfs_props
= allprops
;
362 zhp
->zfs_user_props
= userprops
;
368 get_stats(zfs_handle_t
*zhp
)
371 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
373 if (zcmd_alloc_dst_nvlist(zhp
->zfs_hdl
, &zc
, 0) != 0)
375 if (get_stats_ioctl(zhp
, &zc
) != 0)
377 else if (put_stats_zhdl(zhp
, &zc
) != 0)
379 zcmd_free_nvlists(&zc
);
384 * Refresh the properties currently stored in the handle.
387 zfs_refresh_properties(zfs_handle_t
*zhp
)
389 (void) get_stats(zhp
);
393 * Makes a handle from the given dataset name. Used by zfs_open() and
394 * zfs_iter_* to create child handles on the fly.
397 make_dataset_handle_common(zfs_handle_t
*zhp
, zfs_cmd_t
*zc
)
399 if (put_stats_zhdl(zhp
, zc
) != 0)
403 * We've managed to open the dataset and gather statistics. Determine
404 * the high-level type.
406 if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZVOL
)
407 zhp
->zfs_head_type
= ZFS_TYPE_VOLUME
;
408 else if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZFS
)
409 zhp
->zfs_head_type
= ZFS_TYPE_FILESYSTEM
;
413 if (zhp
->zfs_dmustats
.dds_is_snapshot
)
414 zhp
->zfs_type
= ZFS_TYPE_SNAPSHOT
;
415 else if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZVOL
)
416 zhp
->zfs_type
= ZFS_TYPE_VOLUME
;
417 else if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZFS
)
418 zhp
->zfs_type
= ZFS_TYPE_FILESYSTEM
;
420 abort(); /* we should never see any other types */
422 if ((zhp
->zpool_hdl
= zpool_handle(zhp
)) == NULL
)
429 make_dataset_handle(libzfs_handle_t
*hdl
, const char *path
)
431 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
433 zfs_handle_t
*zhp
= calloc(sizeof (zfs_handle_t
), 1);
439 (void) strlcpy(zhp
->zfs_name
, path
, sizeof (zhp
->zfs_name
));
440 if (zcmd_alloc_dst_nvlist(hdl
, &zc
, 0) != 0) {
444 if (get_stats_ioctl(zhp
, &zc
) == -1) {
445 zcmd_free_nvlists(&zc
);
449 if (make_dataset_handle_common(zhp
, &zc
) == -1) {
453 zcmd_free_nvlists(&zc
);
457 static zfs_handle_t
*
458 make_dataset_handle_zc(libzfs_handle_t
*hdl
, zfs_cmd_t
*zc
)
460 zfs_handle_t
*zhp
= calloc(sizeof (zfs_handle_t
), 1);
466 (void) strlcpy(zhp
->zfs_name
, zc
->zc_name
, sizeof (zhp
->zfs_name
));
467 if (make_dataset_handle_common(zhp
, zc
) == -1) {
475 * Opens the given snapshot, filesystem, or volume. The 'types'
476 * argument is a mask of acceptable types. The function will print an
477 * appropriate error message and return NULL if it can't be opened.
480 zfs_open(libzfs_handle_t
*hdl
, const char *path
, int types
)
485 (void) snprintf(errbuf
, sizeof (errbuf
),
486 dgettext(TEXT_DOMAIN
, "cannot open '%s'"), path
);
489 * Validate the name before we even try to open it.
491 if (!zfs_validate_name(hdl
, path
, ZFS_TYPE_DATASET
, B_FALSE
)) {
492 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
493 "invalid dataset name"));
494 (void) zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
);
499 * Try to get stats for the dataset, which will tell us if it exists.
502 if ((zhp
= make_dataset_handle(hdl
, path
)) == NULL
) {
503 (void) zfs_standard_error(hdl
, errno
, errbuf
);
507 if (!(types
& zhp
->zfs_type
)) {
508 (void) zfs_error(hdl
, EZFS_BADTYPE
, errbuf
);
517 * Release a ZFS handle. Nothing to do but free the associated memory.
520 zfs_close(zfs_handle_t
*zhp
)
522 if (zhp
->zfs_mntopts
)
523 free(zhp
->zfs_mntopts
);
524 nvlist_free(zhp
->zfs_props
);
525 nvlist_free(zhp
->zfs_user_props
);
526 nvlist_free(zhp
->zfs_recvd_props
);
530 typedef struct mnttab_node
{
531 struct mnttab mtn_mt
;
536 libzfs_mnttab_cache_compare(const void *arg1
, const void *arg2
)
538 const mnttab_node_t
*mtn1
= arg1
;
539 const mnttab_node_t
*mtn2
= arg2
;
542 rv
= strcmp(mtn1
->mtn_mt
.mnt_special
, mtn2
->mtn_mt
.mnt_special
);
546 return (rv
> 0 ? 1 : -1);
550 libzfs_mnttab_init(libzfs_handle_t
*hdl
)
552 assert(avl_numnodes(&hdl
->libzfs_mnttab_cache
) == 0);
553 avl_create(&hdl
->libzfs_mnttab_cache
, libzfs_mnttab_cache_compare
,
554 sizeof (mnttab_node_t
), offsetof(mnttab_node_t
, mtn_node
));
558 libzfs_mnttab_update(libzfs_handle_t
*hdl
)
562 rewind(hdl
->libzfs_mnttab
);
563 while (getmntent(hdl
->libzfs_mnttab
, &entry
) == 0) {
566 if (strcmp(entry
.mnt_fstype
, MNTTYPE_ZFS
) != 0)
568 mtn
= zfs_alloc(hdl
, sizeof (mnttab_node_t
));
569 mtn
->mtn_mt
.mnt_special
= zfs_strdup(hdl
, entry
.mnt_special
);
570 mtn
->mtn_mt
.mnt_mountp
= zfs_strdup(hdl
, entry
.mnt_mountp
);
571 mtn
->mtn_mt
.mnt_fstype
= zfs_strdup(hdl
, entry
.mnt_fstype
);
572 mtn
->mtn_mt
.mnt_mntopts
= zfs_strdup(hdl
, entry
.mnt_mntopts
);
573 avl_add(&hdl
->libzfs_mnttab_cache
, mtn
);
578 libzfs_mnttab_fini(libzfs_handle_t
*hdl
)
583 while ((mtn
= avl_destroy_nodes(&hdl
->libzfs_mnttab_cache
, &cookie
))) {
584 free(mtn
->mtn_mt
.mnt_special
);
585 free(mtn
->mtn_mt
.mnt_mountp
);
586 free(mtn
->mtn_mt
.mnt_fstype
);
587 free(mtn
->mtn_mt
.mnt_mntopts
);
590 avl_destroy(&hdl
->libzfs_mnttab_cache
);
594 libzfs_mnttab_cache(libzfs_handle_t
*hdl
, boolean_t enable
)
596 hdl
->libzfs_mnttab_enable
= enable
;
600 libzfs_mnttab_find(libzfs_handle_t
*hdl
, const char *fsname
,
601 struct mnttab
*entry
)
606 if (!hdl
->libzfs_mnttab_enable
) {
607 struct mnttab srch
= { 0 };
609 if (avl_numnodes(&hdl
->libzfs_mnttab_cache
))
610 libzfs_mnttab_fini(hdl
);
611 rewind(hdl
->libzfs_mnttab
);
612 srch
.mnt_special
= (char *)fsname
;
613 srch
.mnt_fstype
= MNTTYPE_ZFS
;
614 if (getmntany(hdl
->libzfs_mnttab
, entry
, &srch
) == 0)
620 if (avl_numnodes(&hdl
->libzfs_mnttab_cache
) == 0)
621 libzfs_mnttab_update(hdl
);
623 find
.mtn_mt
.mnt_special
= (char *)fsname
;
624 mtn
= avl_find(&hdl
->libzfs_mnttab_cache
, &find
, NULL
);
626 *entry
= mtn
->mtn_mt
;
633 libzfs_mnttab_add(libzfs_handle_t
*hdl
, const char *special
,
634 const char *mountp
, const char *mntopts
)
638 if (avl_numnodes(&hdl
->libzfs_mnttab_cache
) == 0)
640 mtn
= zfs_alloc(hdl
, sizeof (mnttab_node_t
));
641 mtn
->mtn_mt
.mnt_special
= zfs_strdup(hdl
, special
);
642 mtn
->mtn_mt
.mnt_mountp
= zfs_strdup(hdl
, mountp
);
643 mtn
->mtn_mt
.mnt_fstype
= zfs_strdup(hdl
, MNTTYPE_ZFS
);
644 mtn
->mtn_mt
.mnt_mntopts
= zfs_strdup(hdl
, mntopts
);
645 avl_add(&hdl
->libzfs_mnttab_cache
, mtn
);
649 libzfs_mnttab_remove(libzfs_handle_t
*hdl
, const char *fsname
)
654 find
.mtn_mt
.mnt_special
= (char *)fsname
;
655 if ((ret
= avl_find(&hdl
->libzfs_mnttab_cache
, (void *)&find
, NULL
))) {
656 avl_remove(&hdl
->libzfs_mnttab_cache
, ret
);
657 free(ret
->mtn_mt
.mnt_special
);
658 free(ret
->mtn_mt
.mnt_mountp
);
659 free(ret
->mtn_mt
.mnt_fstype
);
660 free(ret
->mtn_mt
.mnt_mntopts
);
666 zfs_spa_version(zfs_handle_t
*zhp
, int *spa_version
)
668 zpool_handle_t
*zpool_handle
= zhp
->zpool_hdl
;
670 if (zpool_handle
== NULL
)
673 *spa_version
= zpool_get_prop_int(zpool_handle
,
674 ZPOOL_PROP_VERSION
, NULL
);
679 * The choice of reservation property depends on the SPA version.
682 zfs_which_resv_prop(zfs_handle_t
*zhp
, zfs_prop_t
*resv_prop
)
686 if (zfs_spa_version(zhp
, &spa_version
) < 0)
689 if (spa_version
>= SPA_VERSION_REFRESERVATION
)
690 *resv_prop
= ZFS_PROP_REFRESERVATION
;
692 *resv_prop
= ZFS_PROP_RESERVATION
;
698 * Given an nvlist of properties to set, validates that they are correct, and
699 * parses any numeric properties (index, boolean, etc) if they are specified as
703 zfs_valid_proplist(libzfs_handle_t
*hdl
, zfs_type_t type
, nvlist_t
*nvl
,
704 uint64_t zoned
, zfs_handle_t
*zhp
, const char *errbuf
)
711 int chosen_normal
= -1;
714 if (nvlist_alloc(&ret
, NV_UNIQUE_NAME
, 0) != 0) {
715 (void) no_memory(hdl
);
720 * Make sure this property is valid and applies to this type.
724 while ((elem
= nvlist_next_nvpair(nvl
, elem
)) != NULL
) {
725 const char *propname
= nvpair_name(elem
);
727 prop
= zfs_name_to_prop(propname
);
728 if (prop
== ZPROP_INVAL
&& zfs_prop_user(propname
)) {
730 * This is a user property: make sure it's a
731 * string, and that it's less than ZAP_MAXNAMELEN.
733 if (nvpair_type(elem
) != DATA_TYPE_STRING
) {
734 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
735 "'%s' must be a string"), propname
);
736 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
740 if (strlen(nvpair_name(elem
)) >= ZAP_MAXNAMELEN
) {
741 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
742 "property name '%s' is too long"),
744 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
748 (void) nvpair_value_string(elem
, &strval
);
749 if (nvlist_add_string(ret
, propname
, strval
) != 0) {
750 (void) no_memory(hdl
);
757 * Currently, only user properties can be modified on
760 if (type
== ZFS_TYPE_SNAPSHOT
) {
761 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
762 "this property can not be modified for snapshots"));
763 (void) zfs_error(hdl
, EZFS_PROPTYPE
, errbuf
);
767 if (prop
== ZPROP_INVAL
&& zfs_prop_userquota(propname
)) {
768 zfs_userquota_prop_t uqtype
;
769 char newpropname
[128];
774 if (userquota_propname_decode(propname
, zoned
,
775 &uqtype
, domain
, sizeof (domain
), &rid
) != 0) {
777 dgettext(TEXT_DOMAIN
,
778 "'%s' has an invalid user/group name"),
780 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
784 if (uqtype
!= ZFS_PROP_USERQUOTA
&&
785 uqtype
!= ZFS_PROP_GROUPQUOTA
) {
787 dgettext(TEXT_DOMAIN
, "'%s' is readonly"),
789 (void) zfs_error(hdl
, EZFS_PROPREADONLY
,
794 if (nvpair_type(elem
) == DATA_TYPE_STRING
) {
795 (void) nvpair_value_string(elem
, &strval
);
796 if (strcmp(strval
, "none") == 0) {
798 } else if (zfs_nicestrtonum(hdl
,
799 strval
, &intval
) != 0) {
800 (void) zfs_error(hdl
,
801 EZFS_BADPROP
, errbuf
);
804 } else if (nvpair_type(elem
) ==
806 (void) nvpair_value_uint64(elem
, &intval
);
808 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
809 "use 'none' to disable "
810 "userquota/groupquota"));
814 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
815 "'%s' must be a number"), propname
);
816 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
821 * Encode the prop name as
822 * userquota@<hex-rid>-domain, to make it easy
823 * for the kernel to decode.
825 (void) snprintf(newpropname
, sizeof (newpropname
),
826 "%s%llx-%s", zfs_userquota_prop_prefixes
[uqtype
],
827 (longlong_t
)rid
, domain
);
831 if (nvlist_add_uint64_array(ret
, newpropname
,
833 (void) no_memory(hdl
);
839 if (prop
== ZPROP_INVAL
) {
840 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
841 "invalid property '%s'"), propname
);
842 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
846 if (!zfs_prop_valid_for_type(prop
, type
)) {
848 dgettext(TEXT_DOMAIN
, "'%s' does not "
849 "apply to datasets of this type"), propname
);
850 (void) zfs_error(hdl
, EZFS_PROPTYPE
, errbuf
);
854 if (zfs_prop_readonly(prop
) &&
855 (!zfs_prop_setonce(prop
) || zhp
!= NULL
)) {
857 dgettext(TEXT_DOMAIN
, "'%s' is readonly"),
859 (void) zfs_error(hdl
, EZFS_PROPREADONLY
, errbuf
);
863 if (zprop_parse_value(hdl
, elem
, prop
, type
, ret
,
864 &strval
, &intval
, errbuf
) != 0)
868 * Perform some additional checks for specific properties.
871 case ZFS_PROP_VERSION
:
877 version
= zfs_prop_get_int(zhp
, ZFS_PROP_VERSION
);
878 if (intval
< version
) {
879 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
880 "Can not downgrade; already at version %u"),
882 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
888 case ZFS_PROP_RECORDSIZE
:
889 case ZFS_PROP_VOLBLOCKSIZE
:
890 /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */
891 if (intval
< SPA_MINBLOCKSIZE
||
892 intval
> SPA_MAXBLOCKSIZE
|| !ISP2(intval
)) {
893 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
894 "'%s' must be power of 2 from %u "
896 (uint_t
)SPA_MINBLOCKSIZE
,
897 (uint_t
)SPA_MAXBLOCKSIZE
>> 10);
898 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
903 case ZFS_PROP_MLSLABEL
:
906 * Verify the mlslabel string and convert to
907 * internal hex label string.
911 char *hex
= NULL
; /* internal label string */
913 /* Default value is already OK. */
914 if (strcasecmp(strval
, ZFS_MLSLABEL_DEFAULT
) == 0)
917 /* Verify the label can be converted to binary form */
918 if (((new_sl
= m_label_alloc(MAC_LABEL
)) == NULL
) ||
919 (str_to_label(strval
, &new_sl
, MAC_LABEL
,
920 L_NO_CORRECTION
, NULL
) == -1)) {
924 /* Now translate to hex internal label string */
925 if (label_to_str(new_sl
, &hex
, M_INTERNAL
,
931 m_label_free(new_sl
);
933 /* If string is already in internal form, we're done. */
934 if (strcmp(strval
, hex
) == 0) {
939 /* Replace the label string with the internal form. */
940 (void) nvlist_remove(ret
, zfs_prop_to_name(prop
),
942 verify(nvlist_add_string(ret
, zfs_prop_to_name(prop
),
949 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
950 "invalid mlslabel '%s'"), strval
);
951 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
952 m_label_free(new_sl
); /* OK if null */
957 case ZFS_PROP_MOUNTPOINT
:
961 if (strcmp(strval
, ZFS_MOUNTPOINT_NONE
) == 0 ||
962 strcmp(strval
, ZFS_MOUNTPOINT_LEGACY
) == 0)
965 if (mountpoint_namecheck(strval
, &why
)) {
967 case NAME_ERR_LEADING_SLASH
:
969 dgettext(TEXT_DOMAIN
,
970 "'%s' must be an absolute path, "
971 "'none', or 'legacy'"), propname
);
973 case NAME_ERR_TOOLONG
:
975 dgettext(TEXT_DOMAIN
,
976 "component of '%s' is too long"),
982 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
989 case ZFS_PROP_SHARESMB
:
990 case ZFS_PROP_SHARENFS
:
992 * For the mountpoint and sharenfs or sharesmb
993 * properties, check if it can be set in a
994 * global/non-global zone based on
995 * the zoned property value:
997 * global zone non-global zone
998 * --------------------------------------------------
999 * zoned=on mountpoint (no) mountpoint (yes)
1000 * sharenfs (no) sharenfs (no)
1001 * sharesmb (no) sharesmb (no)
1003 * zoned=off mountpoint (yes) N/A
1008 if (getzoneid() == GLOBAL_ZONEID
) {
1009 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1010 "'%s' cannot be set on "
1011 "dataset in a non-global zone"),
1013 (void) zfs_error(hdl
, EZFS_ZONED
,
1016 } else if (prop
== ZFS_PROP_SHARENFS
||
1017 prop
== ZFS_PROP_SHARESMB
) {
1018 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1019 "'%s' cannot be set in "
1020 "a non-global zone"), propname
);
1021 (void) zfs_error(hdl
, EZFS_ZONED
,
1025 } else if (getzoneid() != GLOBAL_ZONEID
) {
1027 * If zoned property is 'off', this must be in
1028 * a global zone. If not, something is wrong.
1030 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1031 "'%s' cannot be set while dataset "
1032 "'zoned' property is set"), propname
);
1033 (void) zfs_error(hdl
, EZFS_ZONED
, errbuf
);
1038 * At this point, it is legitimate to set the
1039 * property. Now we want to make sure that the
1040 * property value is valid if it is sharenfs.
1042 if ((prop
== ZFS_PROP_SHARENFS
||
1043 prop
== ZFS_PROP_SHARESMB
) &&
1044 strcmp(strval
, "on") != 0 &&
1045 strcmp(strval
, "off") != 0) {
1046 zfs_share_proto_t proto
;
1048 if (prop
== ZFS_PROP_SHARESMB
)
1054 * Must be an valid sharing protocol
1055 * option string so init the libshare
1056 * in order to enable the parser and
1057 * then parse the options. We use the
1058 * control API since we don't care about
1059 * the current configuration and don't
1060 * want the overhead of loading it
1061 * until we actually do something.
1064 if (zfs_init_libshare(hdl
,
1065 SA_INIT_CONTROL_API
) != SA_OK
) {
1067 * An error occurred so we can't do
1070 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1071 "'%s' cannot be set: problem "
1072 "in share initialization"),
1074 (void) zfs_error(hdl
, EZFS_BADPROP
,
1079 if (zfs_parse_options(strval
, proto
) != SA_OK
) {
1081 * There was an error in parsing so
1082 * deal with it by issuing an error
1083 * message and leaving after
1084 * uninitializing the the libshare
1087 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1088 "'%s' cannot be set to invalid "
1089 "options"), propname
);
1090 (void) zfs_error(hdl
, EZFS_BADPROP
,
1092 zfs_uninit_libshare(hdl
);
1095 zfs_uninit_libshare(hdl
);
1099 case ZFS_PROP_UTF8ONLY
:
1100 chosen_utf
= (int)intval
;
1102 case ZFS_PROP_NORMALIZE
:
1103 chosen_normal
= (int)intval
;
1110 * For changes to existing volumes, we have some additional
1111 * checks to enforce.
1113 if (type
== ZFS_TYPE_VOLUME
&& zhp
!= NULL
) {
1114 uint64_t volsize
= zfs_prop_get_int(zhp
,
1116 uint64_t blocksize
= zfs_prop_get_int(zhp
,
1117 ZFS_PROP_VOLBLOCKSIZE
);
1121 case ZFS_PROP_RESERVATION
:
1122 case ZFS_PROP_REFRESERVATION
:
1123 if (intval
> volsize
) {
1124 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1125 "'%s' is greater than current "
1126 "volume size"), propname
);
1127 (void) zfs_error(hdl
, EZFS_BADPROP
,
1133 case ZFS_PROP_VOLSIZE
:
1134 if (intval
% blocksize
!= 0) {
1135 zfs_nicenum(blocksize
, buf
,
1137 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1138 "'%s' must be a multiple of "
1139 "volume block size (%s)"),
1141 (void) zfs_error(hdl
, EZFS_BADPROP
,
1147 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1148 "'%s' cannot be zero"),
1150 (void) zfs_error(hdl
, EZFS_BADPROP
,
1162 * If normalization was chosen, but no UTF8 choice was made,
1163 * enforce rejection of non-UTF8 names.
1165 * If normalization was chosen, but rejecting non-UTF8 names
1166 * was explicitly not chosen, it is an error.
1168 if (chosen_normal
> 0 && chosen_utf
< 0) {
1169 if (nvlist_add_uint64(ret
,
1170 zfs_prop_to_name(ZFS_PROP_UTF8ONLY
), 1) != 0) {
1171 (void) no_memory(hdl
);
1174 } else if (chosen_normal
> 0 && chosen_utf
== 0) {
1175 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1176 "'%s' must be set 'on' if normalization chosen"),
1177 zfs_prop_to_name(ZFS_PROP_UTF8ONLY
));
1178 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
1189 zfs_add_synthetic_resv(zfs_handle_t
*zhp
, nvlist_t
*nvl
)
1191 uint64_t old_volsize
;
1192 uint64_t new_volsize
;
1193 uint64_t old_reservation
;
1194 uint64_t new_reservation
;
1195 zfs_prop_t resv_prop
;
1198 * If this is an existing volume, and someone is setting the volsize,
1199 * make sure that it matches the reservation, or add it if necessary.
1201 old_volsize
= zfs_prop_get_int(zhp
, ZFS_PROP_VOLSIZE
);
1202 if (zfs_which_resv_prop(zhp
, &resv_prop
) < 0)
1204 old_reservation
= zfs_prop_get_int(zhp
, resv_prop
);
1205 if ((zvol_volsize_to_reservation(old_volsize
, zhp
->zfs_props
) !=
1206 old_reservation
) || nvlist_lookup_uint64(nvl
,
1207 zfs_prop_to_name(resv_prop
), &new_reservation
) != ENOENT
) {
1210 if (nvlist_lookup_uint64(nvl
, zfs_prop_to_name(ZFS_PROP_VOLSIZE
),
1213 new_reservation
= zvol_volsize_to_reservation(new_volsize
,
1215 if (nvlist_add_uint64(nvl
, zfs_prop_to_name(resv_prop
),
1216 new_reservation
) != 0) {
1217 (void) no_memory(zhp
->zfs_hdl
);
1224 zfs_setprop_error(libzfs_handle_t
*hdl
, zfs_prop_t prop
, int err
,
1231 * For quotas and reservations, ENOSPC indicates
1232 * something different; setting a quota or reservation
1233 * doesn't use any disk space.
1236 case ZFS_PROP_QUOTA
:
1237 case ZFS_PROP_REFQUOTA
:
1238 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1239 "size is less than current used or "
1241 (void) zfs_error(hdl
, EZFS_PROPSPACE
, errbuf
);
1244 case ZFS_PROP_RESERVATION
:
1245 case ZFS_PROP_REFRESERVATION
:
1246 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1247 "size is greater than available space"));
1248 (void) zfs_error(hdl
, EZFS_PROPSPACE
, errbuf
);
1252 (void) zfs_standard_error(hdl
, err
, errbuf
);
1258 (void) zfs_standard_error(hdl
, EBUSY
, errbuf
);
1262 (void) zfs_error(hdl
, EZFS_DSREADONLY
, errbuf
);
1266 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1267 "pool and or dataset must be upgraded to set this "
1268 "property or value"));
1269 (void) zfs_error(hdl
, EZFS_BADVERSION
, errbuf
);
1273 if (prop
== ZFS_PROP_COMPRESSION
) {
1274 (void) zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1275 "property setting is not allowed on "
1276 "bootable datasets"));
1277 (void) zfs_error(hdl
, EZFS_NOTSUP
, errbuf
);
1279 (void) zfs_standard_error(hdl
, err
, errbuf
);
1284 if (prop
== ZPROP_INVAL
) {
1285 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
1287 (void) zfs_standard_error(hdl
, err
, errbuf
);
1293 * This platform can't address a volume this big.
1296 if (prop
== ZFS_PROP_VOLSIZE
) {
1297 (void) zfs_error(hdl
, EZFS_VOLTOOBIG
, errbuf
);
1303 (void) zfs_standard_error(hdl
, err
, errbuf
);
1308 * Given a property name and value, set the property for the given dataset.
1311 zfs_prop_set(zfs_handle_t
*zhp
, const char *propname
, const char *propval
)
1313 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
1315 prop_changelist_t
*cl
= NULL
;
1317 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
1318 nvlist_t
*nvl
= NULL
, *realprops
;
1320 boolean_t do_prefix
;
1324 (void) snprintf(errbuf
, sizeof (errbuf
),
1325 dgettext(TEXT_DOMAIN
, "cannot set property for '%s'"),
1328 if (nvlist_alloc(&nvl
, NV_UNIQUE_NAME
, 0) != 0 ||
1329 nvlist_add_string(nvl
, propname
, propval
) != 0) {
1330 (void) no_memory(hdl
);
1334 if ((realprops
= zfs_valid_proplist(hdl
, zhp
->zfs_type
, nvl
,
1335 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
), zhp
, errbuf
)) == NULL
)
1341 prop
= zfs_name_to_prop(propname
);
1343 if (prop
== ZFS_PROP_VOLSIZE
) {
1344 if ((added_resv
= zfs_add_synthetic_resv(zhp
, nvl
)) == -1)
1348 if ((cl
= changelist_gather(zhp
, prop
, 0, 0)) == NULL
)
1351 if (prop
== ZFS_PROP_MOUNTPOINT
&& changelist_haszonedchild(cl
)) {
1352 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1353 "child dataset with inherited mountpoint is used "
1354 "in a non-global zone"));
1355 ret
= zfs_error(hdl
, EZFS_ZONED
, errbuf
);
1360 * If the dataset's canmount property is being set to noauto,
1361 * then we want to prevent unmounting & remounting it.
1363 do_prefix
= !((prop
== ZFS_PROP_CANMOUNT
) &&
1364 (zprop_string_to_index(prop
, propval
, &idx
,
1365 ZFS_TYPE_DATASET
) == 0) && (idx
== ZFS_CANMOUNT_NOAUTO
));
1367 if (do_prefix
&& (ret
= changelist_prefix(cl
)) != 0)
1371 * Execute the corresponding ioctl() to set this property.
1373 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1375 if (zcmd_write_src_nvlist(hdl
, &zc
, nvl
) != 0)
1378 ret
= zfs_ioctl(hdl
, ZFS_IOC_SET_PROP
, &zc
);
1381 zfs_setprop_error(hdl
, prop
, errno
, errbuf
);
1382 if (added_resv
&& errno
== ENOSPC
) {
1383 /* clean up the volsize property we tried to set */
1384 uint64_t old_volsize
= zfs_prop_get_int(zhp
,
1387 zcmd_free_nvlists(&zc
);
1388 if (nvlist_alloc(&nvl
, NV_UNIQUE_NAME
, 0) != 0)
1390 if (nvlist_add_uint64(nvl
,
1391 zfs_prop_to_name(ZFS_PROP_VOLSIZE
),
1394 if (zcmd_write_src_nvlist(hdl
, &zc
, nvl
) != 0)
1396 (void) zfs_ioctl(hdl
, ZFS_IOC_SET_PROP
, &zc
);
1400 ret
= changelist_postfix(cl
);
1403 * Refresh the statistics so the new property value
1407 (void) get_stats(zhp
);
1412 zcmd_free_nvlists(&zc
);
1414 changelist_free(cl
);
1419 * Given a property, inherit the value from the parent dataset, or if received
1420 * is TRUE, revert to the received value, if any.
1423 zfs_prop_inherit(zfs_handle_t
*zhp
, const char *propname
, boolean_t received
)
1425 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
1427 prop_changelist_t
*cl
;
1428 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
1432 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
1433 "cannot inherit %s for '%s'"), propname
, zhp
->zfs_name
);
1435 zc
.zc_cookie
= received
;
1436 if ((prop
= zfs_name_to_prop(propname
)) == ZPROP_INVAL
) {
1438 * For user properties, the amount of work we have to do is very
1439 * small, so just do it here.
1441 if (!zfs_prop_user(propname
)) {
1442 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1443 "invalid property"));
1444 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
1447 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1448 (void) strlcpy(zc
.zc_value
, propname
, sizeof (zc
.zc_value
));
1450 if (zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_INHERIT_PROP
, &zc
) != 0)
1451 return (zfs_standard_error(hdl
, errno
, errbuf
));
1457 * Verify that this property is inheritable.
1459 if (zfs_prop_readonly(prop
))
1460 return (zfs_error(hdl
, EZFS_PROPREADONLY
, errbuf
));
1462 if (!zfs_prop_inheritable(prop
) && !received
)
1463 return (zfs_error(hdl
, EZFS_PROPNONINHERIT
, errbuf
));
1466 * Check to see if the value applies to this type
1468 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_type
))
1469 return (zfs_error(hdl
, EZFS_PROPTYPE
, errbuf
));
1472 * Normalize the name, to get rid of shorthand abbreviations.
1474 propname
= zfs_prop_to_name(prop
);
1475 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1476 (void) strlcpy(zc
.zc_value
, propname
, sizeof (zc
.zc_value
));
1478 if (prop
== ZFS_PROP_MOUNTPOINT
&& getzoneid() == GLOBAL_ZONEID
&&
1479 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
)) {
1480 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1481 "dataset is used in a non-global zone"));
1482 return (zfs_error(hdl
, EZFS_ZONED
, errbuf
));
1486 * Determine datasets which will be affected by this change, if any.
1488 if ((cl
= changelist_gather(zhp
, prop
, 0, 0)) == NULL
)
1491 if (prop
== ZFS_PROP_MOUNTPOINT
&& changelist_haszonedchild(cl
)) {
1492 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1493 "child dataset with inherited mountpoint is used "
1494 "in a non-global zone"));
1495 ret
= zfs_error(hdl
, EZFS_ZONED
, errbuf
);
1499 if ((ret
= changelist_prefix(cl
)) != 0)
1502 if ((ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_INHERIT_PROP
, &zc
)) != 0) {
1503 return (zfs_standard_error(hdl
, errno
, errbuf
));
1506 if ((ret
= changelist_postfix(cl
)) != 0)
1510 * Refresh the statistics so the new property is reflected.
1512 (void) get_stats(zhp
);
1516 changelist_free(cl
);
1521 * True DSL properties are stored in an nvlist. The following two functions
1522 * extract them appropriately.
1525 getprop_uint64(zfs_handle_t
*zhp
, zfs_prop_t prop
, char **source
)
1531 if (nvlist_lookup_nvlist(zhp
->zfs_props
,
1532 zfs_prop_to_name(prop
), &nv
) == 0) {
1533 verify(nvlist_lookup_uint64(nv
, ZPROP_VALUE
, &value
) == 0);
1534 (void) nvlist_lookup_string(nv
, ZPROP_SOURCE
, source
);
1536 verify(!zhp
->zfs_props_table
||
1537 zhp
->zfs_props_table
[prop
] == B_TRUE
);
1538 value
= zfs_prop_default_numeric(prop
);
1546 getprop_string(zfs_handle_t
*zhp
, zfs_prop_t prop
, char **source
)
1552 if (nvlist_lookup_nvlist(zhp
->zfs_props
,
1553 zfs_prop_to_name(prop
), &nv
) == 0) {
1554 verify(nvlist_lookup_string(nv
, ZPROP_VALUE
, &value
) == 0);
1555 (void) nvlist_lookup_string(nv
, ZPROP_SOURCE
, source
);
1557 verify(!zhp
->zfs_props_table
||
1558 zhp
->zfs_props_table
[prop
] == B_TRUE
);
1559 if ((value
= (char *)zfs_prop_default_string(prop
)) == NULL
)
1568 zfs_is_recvd_props_mode(zfs_handle_t
*zhp
)
1570 return (zhp
->zfs_props
== zhp
->zfs_recvd_props
);
1574 zfs_set_recvd_props_mode(zfs_handle_t
*zhp
, uint64_t *cookie
)
1576 *cookie
= (uint64_t)(uintptr_t)zhp
->zfs_props
;
1577 zhp
->zfs_props
= zhp
->zfs_recvd_props
;
1581 zfs_unset_recvd_props_mode(zfs_handle_t
*zhp
, uint64_t *cookie
)
1583 zhp
->zfs_props
= (nvlist_t
*)(uintptr_t)*cookie
;
1588 * Internal function for getting a numeric property. Both zfs_prop_get() and
1589 * zfs_prop_get_int() are built using this interface.
1591 * Certain properties can be overridden using 'mount -o'. In this case, scan
1592 * the contents of the /etc/mnttab entry, searching for the appropriate options.
1593 * If they differ from the on-disk values, report the current values and mark
1594 * the source "temporary".
1597 get_numeric_property(zfs_handle_t
*zhp
, zfs_prop_t prop
, zprop_source_t
*src
,
1598 char **source
, uint64_t *val
)
1600 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
1601 nvlist_t
*zplprops
= NULL
;
1603 char *mntopt_on
= NULL
;
1604 char *mntopt_off
= NULL
;
1605 boolean_t received
= zfs_is_recvd_props_mode(zhp
);
1610 case ZFS_PROP_ATIME
:
1611 mntopt_on
= MNTOPT_ATIME
;
1612 mntopt_off
= MNTOPT_NOATIME
;
1615 case ZFS_PROP_DEVICES
:
1616 mntopt_on
= MNTOPT_DEVICES
;
1617 mntopt_off
= MNTOPT_NODEVICES
;
1621 mntopt_on
= MNTOPT_EXEC
;
1622 mntopt_off
= MNTOPT_NOEXEC
;
1625 case ZFS_PROP_READONLY
:
1626 mntopt_on
= MNTOPT_RO
;
1627 mntopt_off
= MNTOPT_RW
;
1630 case ZFS_PROP_SETUID
:
1631 mntopt_on
= MNTOPT_SETUID
;
1632 mntopt_off
= MNTOPT_NOSETUID
;
1635 case ZFS_PROP_XATTR
:
1636 mntopt_on
= MNTOPT_XATTR
;
1637 mntopt_off
= MNTOPT_NOXATTR
;
1640 case ZFS_PROP_NBMAND
:
1641 mntopt_on
= MNTOPT_NBMAND
;
1642 mntopt_off
= MNTOPT_NONBMAND
;
1649 * Because looking up the mount options is potentially expensive
1650 * (iterating over all of /etc/mnttab), we defer its calculation until
1651 * we're looking up a property which requires its presence.
1653 if (!zhp
->zfs_mntcheck
&&
1654 (mntopt_on
!= NULL
|| prop
== ZFS_PROP_MOUNTED
)) {
1655 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
1656 struct mnttab entry
;
1658 if (libzfs_mnttab_find(hdl
, zhp
->zfs_name
, &entry
) == 0) {
1659 zhp
->zfs_mntopts
= zfs_strdup(hdl
,
1661 if (zhp
->zfs_mntopts
== NULL
)
1665 zhp
->zfs_mntcheck
= B_TRUE
;
1668 if (zhp
->zfs_mntopts
== NULL
)
1669 mnt
.mnt_mntopts
= "";
1671 mnt
.mnt_mntopts
= zhp
->zfs_mntopts
;
1674 case ZFS_PROP_ATIME
:
1675 case ZFS_PROP_DEVICES
:
1677 case ZFS_PROP_READONLY
:
1678 case ZFS_PROP_SETUID
:
1679 case ZFS_PROP_XATTR
:
1680 case ZFS_PROP_NBMAND
:
1681 *val
= getprop_uint64(zhp
, prop
, source
);
1686 if (hasmntopt(&mnt
, mntopt_on
) && !*val
) {
1689 *src
= ZPROP_SRC_TEMPORARY
;
1690 } else if (hasmntopt(&mnt
, mntopt_off
) && *val
) {
1693 *src
= ZPROP_SRC_TEMPORARY
;
1697 case ZFS_PROP_CANMOUNT
:
1698 case ZFS_PROP_VOLSIZE
:
1699 case ZFS_PROP_QUOTA
:
1700 case ZFS_PROP_REFQUOTA
:
1701 case ZFS_PROP_RESERVATION
:
1702 case ZFS_PROP_REFRESERVATION
:
1703 *val
= getprop_uint64(zhp
, prop
, source
);
1705 if (*source
== NULL
) {
1706 /* not default, must be local */
1707 *source
= zhp
->zfs_name
;
1711 case ZFS_PROP_MOUNTED
:
1712 *val
= (zhp
->zfs_mntopts
!= NULL
);
1715 case ZFS_PROP_NUMCLONES
:
1716 *val
= zhp
->zfs_dmustats
.dds_num_clones
;
1719 case ZFS_PROP_VERSION
:
1720 case ZFS_PROP_NORMALIZE
:
1721 case ZFS_PROP_UTF8ONLY
:
1723 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_head_type
) ||
1724 zcmd_alloc_dst_nvlist(zhp
->zfs_hdl
, &zc
, 0) != 0)
1726 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1727 if (zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_OBJSET_ZPLPROPS
, &zc
)) {
1728 zcmd_free_nvlists(&zc
);
1731 if (zcmd_read_dst_nvlist(zhp
->zfs_hdl
, &zc
, &zplprops
) != 0 ||
1732 nvlist_lookup_uint64(zplprops
, zfs_prop_to_name(prop
),
1734 zcmd_free_nvlists(&zc
);
1738 nvlist_free(zplprops
);
1739 zcmd_free_nvlists(&zc
);
1743 switch (zfs_prop_get_type(prop
)) {
1744 case PROP_TYPE_NUMBER
:
1745 case PROP_TYPE_INDEX
:
1746 *val
= getprop_uint64(zhp
, prop
, source
);
1748 * If we tried to use a default value for a
1749 * readonly property, it means that it was not
1752 if (zfs_prop_readonly(prop
) &&
1753 *source
!= NULL
&& (*source
)[0] == '\0') {
1758 case PROP_TYPE_STRING
:
1760 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
1761 "cannot get non-numeric property"));
1762 return (zfs_error(zhp
->zfs_hdl
, EZFS_BADPROP
,
1763 dgettext(TEXT_DOMAIN
, "internal error")));
1771 * Calculate the source type, given the raw source string.
1774 get_source(zfs_handle_t
*zhp
, zprop_source_t
*srctype
, char *source
,
1775 char *statbuf
, size_t statlen
)
1777 if (statbuf
== NULL
|| *srctype
== ZPROP_SRC_TEMPORARY
)
1780 if (source
== NULL
) {
1781 *srctype
= ZPROP_SRC_NONE
;
1782 } else if (source
[0] == '\0') {
1783 *srctype
= ZPROP_SRC_DEFAULT
;
1784 } else if (strstr(source
, ZPROP_SOURCE_VAL_RECVD
) != NULL
) {
1785 *srctype
= ZPROP_SRC_RECEIVED
;
1787 if (strcmp(source
, zhp
->zfs_name
) == 0) {
1788 *srctype
= ZPROP_SRC_LOCAL
;
1790 (void) strlcpy(statbuf
, source
, statlen
);
1791 *srctype
= ZPROP_SRC_INHERITED
;
1798 zfs_prop_get_recvd(zfs_handle_t
*zhp
, const char *propname
, char *propbuf
,
1799 size_t proplen
, boolean_t literal
)
1804 if (zhp
->zfs_recvd_props
== NULL
)
1805 if (get_recvd_props_ioctl(zhp
) != 0)
1808 prop
= zfs_name_to_prop(propname
);
1810 if (prop
!= ZPROP_INVAL
) {
1812 if (!nvlist_exists(zhp
->zfs_recvd_props
, propname
))
1814 zfs_set_recvd_props_mode(zhp
, &cookie
);
1815 err
= zfs_prop_get(zhp
, prop
, propbuf
, proplen
,
1816 NULL
, NULL
, 0, literal
);
1817 zfs_unset_recvd_props_mode(zhp
, &cookie
);
1818 } else if (zfs_prop_userquota(propname
)) {
1823 if (nvlist_lookup_nvlist(zhp
->zfs_recvd_props
,
1824 propname
, &propval
) != 0)
1826 verify(nvlist_lookup_string(propval
, ZPROP_VALUE
,
1828 (void) strlcpy(propbuf
, recvdval
, proplen
);
1831 return (err
== 0 ? 0 : -1);
1835 * Retrieve a property from the given object. If 'literal' is specified, then
1836 * numbers are left as exact values. Otherwise, numbers are converted to a
1837 * human-readable form.
1839 * Returns 0 on success, or -1 on error.
1842 zfs_prop_get(zfs_handle_t
*zhp
, zfs_prop_t prop
, char *propbuf
, size_t proplen
,
1843 zprop_source_t
*src
, char *statbuf
, size_t statlen
, boolean_t literal
)
1845 char *source
= NULL
;
1849 boolean_t received
= zfs_is_recvd_props_mode(zhp
);
1852 * Check to see if this property applies to our object
1854 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_type
))
1857 if (received
&& zfs_prop_readonly(prop
))
1861 *src
= ZPROP_SRC_NONE
;
1864 case ZFS_PROP_CREATION
:
1866 * 'creation' is a time_t stored in the statistics. We convert
1867 * this into a string unless 'literal' is specified.
1870 val
= getprop_uint64(zhp
, prop
, &source
);
1871 time_t time
= (time_t)val
;
1875 localtime_r(&time
, &t
) == NULL
||
1876 strftime(propbuf
, proplen
, "%a %b %e %k:%M %Y",
1878 (void) snprintf(propbuf
, proplen
, "%llu", (u_longlong_t
) val
);
1882 case ZFS_PROP_MOUNTPOINT
:
1884 * Getting the precise mountpoint can be tricky.
1886 * - for 'none' or 'legacy', return those values.
1887 * - for inherited mountpoints, we want to take everything
1888 * after our ancestor and append it to the inherited value.
1890 * If the pool has an alternate root, we want to prepend that
1891 * root to any values we return.
1894 str
= getprop_string(zhp
, prop
, &source
);
1896 if (str
[0] == '/') {
1897 char buf
[MAXPATHLEN
];
1899 const char *relpath
;
1902 * If we inherit the mountpoint, even from a dataset
1903 * with a received value, the source will be the path of
1904 * the dataset we inherit from. If source is
1905 * ZPROP_SOURCE_VAL_RECVD, the received value is not
1908 if (strcmp(source
, ZPROP_SOURCE_VAL_RECVD
) == 0) {
1911 relpath
= zhp
->zfs_name
+ strlen(source
);
1912 if (relpath
[0] == '/')
1916 if ((zpool_get_prop(zhp
->zpool_hdl
,
1917 ZPOOL_PROP_ALTROOT
, buf
, MAXPATHLEN
, NULL
)) ||
1918 (strcmp(root
, "-") == 0))
1921 * Special case an alternate root of '/'. This will
1922 * avoid having multiple leading slashes in the
1925 if (strcmp(root
, "/") == 0)
1929 * If the mountpoint is '/' then skip over this
1930 * if we are obtaining either an alternate root or
1931 * an inherited mountpoint.
1933 if (str
[1] == '\0' && (root
[0] != '\0' ||
1934 relpath
[0] != '\0'))
1937 if (relpath
[0] == '\0')
1938 (void) snprintf(propbuf
, proplen
, "%s%s",
1941 (void) snprintf(propbuf
, proplen
, "%s%s%s%s",
1942 root
, str
, relpath
[0] == '@' ? "" : "/",
1945 /* 'legacy' or 'none' */
1946 (void) strlcpy(propbuf
, str
, proplen
);
1951 case ZFS_PROP_ORIGIN
:
1952 (void) strlcpy(propbuf
, getprop_string(zhp
, prop
, &source
),
1955 * If there is no parent at all, return failure to indicate that
1956 * it doesn't apply to this dataset.
1958 if (propbuf
[0] == '\0')
1962 case ZFS_PROP_QUOTA
:
1963 case ZFS_PROP_REFQUOTA
:
1964 case ZFS_PROP_RESERVATION
:
1965 case ZFS_PROP_REFRESERVATION
:
1967 if (get_numeric_property(zhp
, prop
, src
, &source
, &val
) != 0)
1971 * If quota or reservation is 0, we translate this into 'none'
1972 * (unless literal is set), and indicate that it's the default
1973 * value. Otherwise, we print the number nicely and indicate
1974 * that its set locally.
1978 (void) strlcpy(propbuf
, "0", proplen
);
1980 (void) strlcpy(propbuf
, "none", proplen
);
1983 (void) snprintf(propbuf
, proplen
, "%llu",
1986 zfs_nicenum(val
, propbuf
, proplen
);
1990 case ZFS_PROP_COMPRESSRATIO
:
1991 if (get_numeric_property(zhp
, prop
, src
, &source
, &val
) != 0)
1993 (void) snprintf(propbuf
, proplen
, "%llu.%02llux",
1994 (u_longlong_t
)(val
/ 100),
1995 (u_longlong_t
)(val
% 100));
1999 switch (zhp
->zfs_type
) {
2000 case ZFS_TYPE_FILESYSTEM
:
2003 case ZFS_TYPE_VOLUME
:
2006 case ZFS_TYPE_SNAPSHOT
:
2012 (void) snprintf(propbuf
, proplen
, "%s", str
);
2015 case ZFS_PROP_MOUNTED
:
2017 * The 'mounted' property is a pseudo-property that described
2018 * whether the filesystem is currently mounted. Even though
2019 * it's a boolean value, the typical values of "on" and "off"
2020 * don't make sense, so we translate to "yes" and "no".
2022 if (get_numeric_property(zhp
, ZFS_PROP_MOUNTED
,
2023 src
, &source
, &val
) != 0)
2026 (void) strlcpy(propbuf
, "yes", proplen
);
2028 (void) strlcpy(propbuf
, "no", proplen
);
2033 * The 'name' property is a pseudo-property derived from the
2034 * dataset name. It is presented as a real property to simplify
2037 (void) strlcpy(propbuf
, zhp
->zfs_name
, proplen
);
2040 case ZFS_PROP_MLSLABEL
:
2042 m_label_t
*new_sl
= NULL
;
2043 char *ascii
= NULL
; /* human readable label */
2045 (void) strlcpy(propbuf
,
2046 getprop_string(zhp
, prop
, &source
), proplen
);
2048 if (literal
|| (strcasecmp(propbuf
,
2049 ZFS_MLSLABEL_DEFAULT
) == 0))
2053 * Try to translate the internal hex string to
2054 * human-readable output. If there are any
2055 * problems just use the hex string.
2058 if (str_to_label(propbuf
, &new_sl
, MAC_LABEL
,
2059 L_NO_CORRECTION
, NULL
) == -1) {
2060 m_label_free(new_sl
);
2064 if (label_to_str(new_sl
, &ascii
, M_LABEL
,
2068 m_label_free(new_sl
);
2071 m_label_free(new_sl
);
2073 (void) strlcpy(propbuf
, ascii
, proplen
);
2079 switch (zfs_prop_get_type(prop
)) {
2080 case PROP_TYPE_NUMBER
:
2081 if (get_numeric_property(zhp
, prop
, src
,
2082 &source
, &val
) != 0)
2085 (void) snprintf(propbuf
, proplen
, "%llu",
2088 zfs_nicenum(val
, propbuf
, proplen
);
2091 case PROP_TYPE_STRING
:
2092 (void) strlcpy(propbuf
,
2093 getprop_string(zhp
, prop
, &source
), proplen
);
2096 case PROP_TYPE_INDEX
:
2097 if (get_numeric_property(zhp
, prop
, src
,
2098 &source
, &val
) != 0)
2100 if (zfs_prop_index_to_string(prop
, val
, &strval
) != 0)
2102 (void) strlcpy(propbuf
, strval
, proplen
);
2110 get_source(zhp
, src
, source
, statbuf
, statlen
);
2116 * Utility function to get the given numeric property. Does no validation that
2117 * the given property is the appropriate type; should only be used with
2118 * hard-coded property types.
2121 zfs_prop_get_int(zfs_handle_t
*zhp
, zfs_prop_t prop
)
2126 (void) get_numeric_property(zhp
, prop
, NULL
, &source
, &val
);
2132 zfs_prop_set_int(zfs_handle_t
*zhp
, zfs_prop_t prop
, uint64_t val
)
2136 (void) snprintf(buf
, sizeof (buf
), "%llu", (longlong_t
)val
);
2137 return (zfs_prop_set(zhp
, zfs_prop_to_name(prop
), buf
));
2141 * Similar to zfs_prop_get(), but returns the value as an integer.
2144 zfs_prop_get_numeric(zfs_handle_t
*zhp
, zfs_prop_t prop
, uint64_t *value
,
2145 zprop_source_t
*src
, char *statbuf
, size_t statlen
)
2150 * Check to see if this property applies to our object
2152 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_type
)) {
2153 return (zfs_error_fmt(zhp
->zfs_hdl
, EZFS_PROPTYPE
,
2154 dgettext(TEXT_DOMAIN
, "cannot get property '%s'"),
2155 zfs_prop_to_name(prop
)));
2159 *src
= ZPROP_SRC_NONE
;
2161 if (get_numeric_property(zhp
, prop
, src
, &source
, value
) != 0)
2164 get_source(zhp
, src
, source
, statbuf
, statlen
);
2170 idmap_id_to_numeric_domain_rid(uid_t id
, boolean_t isuser
,
2171 char **domainp
, idmap_rid_t
*ridp
)
2173 idmap_get_handle_t
*get_hdl
= NULL
;
2177 if (idmap_get_create(&get_hdl
) != IDMAP_SUCCESS
)
2181 err
= idmap_get_sidbyuid(get_hdl
, id
,
2182 IDMAP_REQ_FLG_USE_CACHE
, domainp
, ridp
, &status
);
2184 err
= idmap_get_sidbygid(get_hdl
, id
,
2185 IDMAP_REQ_FLG_USE_CACHE
, domainp
, ridp
, &status
);
2187 if (err
== IDMAP_SUCCESS
&&
2188 idmap_get_mappings(get_hdl
) == IDMAP_SUCCESS
&&
2189 status
== IDMAP_SUCCESS
)
2195 idmap_get_destroy(get_hdl
);
2200 * convert the propname into parameters needed by kernel
2201 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829
2202 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789
2205 userquota_propname_decode(const char *propname
, boolean_t zoned
,
2206 zfs_userquota_prop_t
*typep
, char *domain
, int domainlen
, uint64_t *ridp
)
2208 zfs_userquota_prop_t type
;
2210 char *numericsid
= NULL
;
2215 /* Figure out the property type ({user|group}{quota|space}) */
2216 for (type
= 0; type
< ZFS_NUM_USERQUOTA_PROPS
; type
++) {
2217 if (strncmp(propname
, zfs_userquota_prop_prefixes
[type
],
2218 strlen(zfs_userquota_prop_prefixes
[type
])) == 0)
2221 if (type
== ZFS_NUM_USERQUOTA_PROPS
)
2225 isuser
= (type
== ZFS_PROP_USERQUOTA
||
2226 type
== ZFS_PROP_USERUSED
);
2228 cp
= strchr(propname
, '@') + 1;
2230 if (strchr(cp
, '@')) {
2232 * It's a SID name (eg "user@domain") that needs to be
2233 * turned into S-1-domainID-RID.
2235 directory_error_t e
;
2236 if (zoned
&& getzoneid() == GLOBAL_ZONEID
)
2239 e
= directory_sid_from_user_name(NULL
,
2242 e
= directory_sid_from_group_name(NULL
,
2246 directory_error_free(e
);
2249 if (numericsid
== NULL
)
2252 /* will be further decoded below */
2255 if (strncmp(cp
, "S-1-", 4) == 0) {
2256 /* It's a numeric SID (eg "S-1-234-567-89") */
2257 (void) strlcpy(domain
, cp
, domainlen
);
2258 cp
= strrchr(domain
, '-');
2263 *ridp
= strtoull(cp
, &end
, 10);
2268 if (errno
!= 0 || *end
!= '\0')
2270 } else if (!isdigit(*cp
)) {
2272 * It's a user/group name (eg "user") that needs to be
2273 * turned into a uid/gid
2275 if (zoned
&& getzoneid() == GLOBAL_ZONEID
)
2291 /* It's a user/group ID (eg "12345"). */
2292 uid_t id
= strtoul(cp
, &end
, 10);
2299 /* It's an ephemeral ID. */
2300 if (idmap_id_to_numeric_domain_rid(id
, isuser
,
2301 &mapdomain
, &rid
) != 0)
2303 (void) strlcpy(domain
, mapdomain
, domainlen
);
2310 ASSERT3P(numericsid
, ==, NULL
);
2315 zfs_prop_get_userquota_common(zfs_handle_t
*zhp
, const char *propname
,
2316 uint64_t *propvalue
, zfs_userquota_prop_t
*typep
)
2319 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2321 (void) strncpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
2323 err
= userquota_propname_decode(propname
,
2324 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
),
2325 typep
, zc
.zc_value
, sizeof (zc
.zc_value
), &zc
.zc_guid
);
2326 zc
.zc_objset_type
= *typep
;
2330 err
= ioctl(zhp
->zfs_hdl
->libzfs_fd
, ZFS_IOC_USERSPACE_ONE
, &zc
);
2334 *propvalue
= zc
.zc_cookie
;
2339 zfs_prop_get_userquota_int(zfs_handle_t
*zhp
, const char *propname
,
2340 uint64_t *propvalue
)
2342 zfs_userquota_prop_t type
;
2344 return (zfs_prop_get_userquota_common(zhp
, propname
, propvalue
,
2349 zfs_prop_get_userquota(zfs_handle_t
*zhp
, const char *propname
,
2350 char *propbuf
, int proplen
, boolean_t literal
)
2354 zfs_userquota_prop_t type
;
2356 err
= zfs_prop_get_userquota_common(zhp
, propname
, &propvalue
,
2363 (void) snprintf(propbuf
, proplen
, "%llu",
2364 (u_longlong_t
)propvalue
);
2365 } else if (propvalue
== 0 &&
2366 (type
== ZFS_PROP_USERQUOTA
|| type
== ZFS_PROP_GROUPQUOTA
)) {
2367 (void) strlcpy(propbuf
, "none", proplen
);
2369 zfs_nicenum(propvalue
, propbuf
, proplen
);
2375 * Returns the name of the given zfs handle.
2378 zfs_get_name(const zfs_handle_t
*zhp
)
2380 return (zhp
->zfs_name
);
2384 * Returns the type of the given zfs handle.
2387 zfs_get_type(const zfs_handle_t
*zhp
)
2389 return (zhp
->zfs_type
);
2393 zfs_do_list_ioctl(zfs_handle_t
*zhp
, int arg
, zfs_cmd_t
*zc
)
2396 uint64_t orig_cookie
;
2398 orig_cookie
= zc
->zc_cookie
;
2400 (void) strlcpy(zc
->zc_name
, zhp
->zfs_name
, sizeof (zc
->zc_name
));
2401 rc
= ioctl(zhp
->zfs_hdl
->libzfs_fd
, arg
, zc
);
2406 /* expand nvlist memory and try again */
2407 if (zcmd_expand_dst_nvlist(zhp
->zfs_hdl
, zc
) != 0) {
2408 zcmd_free_nvlists(zc
);
2411 zc
->zc_cookie
= orig_cookie
;
2414 * An errno value of ESRCH indicates normal completion.
2415 * If ENOENT is returned, then the underlying dataset
2416 * has been removed since we obtained the handle.
2423 rc
= zfs_standard_error(zhp
->zfs_hdl
, errno
,
2424 dgettext(TEXT_DOMAIN
,
2425 "cannot iterate filesystems"));
2433 * Iterate over all child filesystems
2436 zfs_iter_filesystems(zfs_handle_t
*zhp
, zfs_iter_f func
, void *data
)
2438 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2442 if (zhp
->zfs_type
!= ZFS_TYPE_FILESYSTEM
)
2445 if (zcmd_alloc_dst_nvlist(zhp
->zfs_hdl
, &zc
, 0) != 0)
2448 while ((ret
= zfs_do_list_ioctl(zhp
, ZFS_IOC_DATASET_LIST_NEXT
,
2451 * Silently ignore errors, as the only plausible explanation is
2452 * that the pool has since been removed.
2454 if ((nzhp
= make_dataset_handle_zc(zhp
->zfs_hdl
,
2459 if ((ret
= func(nzhp
, data
)) != 0) {
2460 zcmd_free_nvlists(&zc
);
2464 zcmd_free_nvlists(&zc
);
2465 return ((ret
< 0) ? ret
: 0);
2469 * Iterate over all snapshots
2472 zfs_iter_snapshots(zfs_handle_t
*zhp
, zfs_iter_f func
, void *data
)
2474 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2478 if (zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
)
2481 if (zcmd_alloc_dst_nvlist(zhp
->zfs_hdl
, &zc
, 0) != 0)
2483 while ((ret
= zfs_do_list_ioctl(zhp
, ZFS_IOC_SNAPSHOT_LIST_NEXT
,
2486 if ((nzhp
= make_dataset_handle_zc(zhp
->zfs_hdl
,
2491 if ((ret
= func(nzhp
, data
)) != 0) {
2492 zcmd_free_nvlists(&zc
);
2496 zcmd_free_nvlists(&zc
);
2497 return ((ret
< 0) ? ret
: 0);
2501 * Iterate over all children, snapshots and filesystems
2504 zfs_iter_children(zfs_handle_t
*zhp
, zfs_iter_f func
, void *data
)
2508 if ((ret
= zfs_iter_filesystems(zhp
, func
, data
)) != 0)
2511 return (zfs_iter_snapshots(zhp
, func
, data
));
2515 * Is one dataset name a child dataset of another?
2517 * Needs to handle these cases:
2518 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo"
2519 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar"
2520 * Descendant? No. No. No. Yes.
2523 is_descendant(const char *ds1
, const char *ds2
)
2525 size_t d1len
= strlen(ds1
);
2527 /* ds2 can't be a descendant if it's smaller */
2528 if (strlen(ds2
) < d1len
)
2531 /* otherwise, compare strings and verify that there's a '/' char */
2532 return (ds2
[d1len
] == '/' && (strncmp(ds1
, ds2
, d1len
) == 0));
2536 * Given a complete name, return just the portion that refers to the parent.
2537 * Can return NULL if this is a pool.
2540 parent_name(const char *path
, char *buf
, size_t buflen
)
2544 if ((loc
= strrchr(path
, '/')) == NULL
)
2547 (void) strncpy(buf
, path
, MIN(buflen
, loc
- path
));
2548 buf
[loc
- path
] = '\0';
2554 * If accept_ancestor is false, then check to make sure that the given path has
2555 * a parent, and that it exists. If accept_ancestor is true, then find the
2556 * closest existing ancestor for the given path. In prefixlen return the
2557 * length of already existing prefix of the given path. We also fetch the
2558 * 'zoned' property, which is used to validate property settings when creating
2562 check_parents(libzfs_handle_t
*hdl
, const char *path
, uint64_t *zoned
,
2563 boolean_t accept_ancestor
, int *prefixlen
)
2565 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2566 char parent
[ZFS_MAXNAMELEN
];
2572 (void) snprintf(errbuf
, sizeof (errbuf
),
2573 dgettext(TEXT_DOMAIN
, "cannot create '%s'"), path
);
2575 /* get parent, and check to see if this is just a pool */
2576 if (parent_name(path
, parent
, sizeof (parent
)) != 0) {
2577 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2578 "missing dataset name"));
2579 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
2582 /* check to see if the pool exists */
2583 if ((slash
= strchr(parent
, '/')) == NULL
)
2584 slash
= parent
+ strlen(parent
);
2585 (void) strncpy(zc
.zc_name
, parent
, slash
- parent
);
2586 zc
.zc_name
[slash
- parent
] = '\0';
2587 if (ioctl(hdl
->libzfs_fd
, ZFS_IOC_OBJSET_STATS
, &zc
) != 0 &&
2589 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2590 "no such pool '%s'"), zc
.zc_name
);
2591 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2594 /* check to see if the parent dataset exists */
2595 while ((zhp
= make_dataset_handle(hdl
, parent
)) == NULL
) {
2596 if (errno
== ENOENT
&& accept_ancestor
) {
2598 * Go deeper to find an ancestor, give up on top level.
2600 if (parent_name(parent
, parent
, sizeof (parent
)) != 0) {
2601 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2602 "no such pool '%s'"), zc
.zc_name
);
2603 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2605 } else if (errno
== ENOENT
) {
2606 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2607 "parent does not exist"));
2608 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2610 return (zfs_standard_error(hdl
, errno
, errbuf
));
2613 is_zoned
= zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
);
2617 /* we are in a non-global zone, but parent is in the global zone */
2618 if (getzoneid() != GLOBAL_ZONEID
&& !is_zoned
) {
2619 (void) zfs_standard_error(hdl
, EPERM
, errbuf
);
2624 /* make sure parent is a filesystem */
2625 if (zfs_get_type(zhp
) != ZFS_TYPE_FILESYSTEM
) {
2626 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2627 "parent is not a filesystem"));
2628 (void) zfs_error(hdl
, EZFS_BADTYPE
, errbuf
);
2634 if (prefixlen
!= NULL
)
2635 *prefixlen
= strlen(parent
);
2640 * Finds whether the dataset of the given type(s) exists.
2643 zfs_dataset_exists(libzfs_handle_t
*hdl
, const char *path
, zfs_type_t types
)
2647 if (!zfs_validate_name(hdl
, path
, types
, B_FALSE
))
2651 * Try to get stats for the dataset, which will tell us if it exists.
2653 if ((zhp
= make_dataset_handle(hdl
, path
)) != NULL
) {
2654 int ds_type
= zhp
->zfs_type
;
2657 if (types
& ds_type
)
2664 * Given a path to 'target', create all the ancestors between
2665 * the prefixlen portion of the path, and the target itself.
2666 * Fail if the initial prefixlen-ancestor does not already exist.
2669 create_parents(libzfs_handle_t
*hdl
, char *target
, int prefixlen
)
2675 /* make sure prefix exists */
2676 cp
= target
+ prefixlen
;
2678 assert(strchr(cp
, '/') == NULL
);
2679 h
= zfs_open(hdl
, target
, ZFS_TYPE_FILESYSTEM
);
2682 h
= zfs_open(hdl
, target
, ZFS_TYPE_FILESYSTEM
);
2690 * Attempt to create, mount, and share any ancestor filesystems,
2691 * up to the prefixlen-long one.
2693 for (cp
= target
+ prefixlen
+ 1;
2694 (cp
= strchr(cp
, '/')); *cp
= '/', cp
++) {
2699 h
= make_dataset_handle(hdl
, target
);
2701 /* it already exists, nothing to do here */
2706 logstr
= hdl
->libzfs_log_str
;
2707 hdl
->libzfs_log_str
= NULL
;
2708 if (zfs_create(hdl
, target
, ZFS_TYPE_FILESYSTEM
,
2710 hdl
->libzfs_log_str
= logstr
;
2711 opname
= dgettext(TEXT_DOMAIN
, "create");
2715 hdl
->libzfs_log_str
= logstr
;
2716 h
= zfs_open(hdl
, target
, ZFS_TYPE_FILESYSTEM
);
2718 opname
= dgettext(TEXT_DOMAIN
, "open");
2722 if (zfs_mount(h
, NULL
, 0) != 0) {
2723 opname
= dgettext(TEXT_DOMAIN
, "mount");
2727 if (zfs_share(h
) != 0) {
2728 opname
= dgettext(TEXT_DOMAIN
, "share");
2738 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2739 "failed to %s ancestor '%s'"), opname
, target
);
2744 * Creates non-existing ancestors of the given path.
2747 zfs_create_ancestors(libzfs_handle_t
*hdl
, const char *path
)
2753 if (check_parents(hdl
, path
, NULL
, B_TRUE
, &prefix
) != 0)
2756 if ((path_copy
= strdup(path
)) != NULL
) {
2757 rc
= create_parents(hdl
, path_copy
, prefix
);
2760 if (path_copy
== NULL
|| rc
!= 0)
2767 * Create a new filesystem or volume.
2770 zfs_create(libzfs_handle_t
*hdl
, const char *path
, zfs_type_t type
,
2773 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2776 uint64_t blocksize
= zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE
);
2780 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
2781 "cannot create '%s'"), path
);
2783 /* validate the path, taking care to note the extended error message */
2784 if (!zfs_validate_name(hdl
, path
, type
, B_TRUE
))
2785 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
2787 /* validate parents exist */
2788 if (check_parents(hdl
, path
, &zoned
, B_FALSE
, NULL
) != 0)
2792 * The failure modes when creating a dataset of a different type over
2793 * one that already exists is a little strange. In particular, if you
2794 * try to create a dataset on top of an existing dataset, the ioctl()
2795 * will return ENOENT, not EEXIST. To prevent this from happening, we
2796 * first try to see if the dataset exists.
2798 (void) strlcpy(zc
.zc_name
, path
, sizeof (zc
.zc_name
));
2799 if (zfs_dataset_exists(hdl
, zc
.zc_name
, ZFS_TYPE_DATASET
)) {
2800 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2801 "dataset already exists"));
2802 return (zfs_error(hdl
, EZFS_EXISTS
, errbuf
));
2805 if (type
== ZFS_TYPE_VOLUME
)
2806 zc
.zc_objset_type
= DMU_OST_ZVOL
;
2808 zc
.zc_objset_type
= DMU_OST_ZFS
;
2810 if (props
&& (props
= zfs_valid_proplist(hdl
, type
, props
,
2811 zoned
, NULL
, errbuf
)) == 0)
2814 if (type
== ZFS_TYPE_VOLUME
) {
2816 * If we are creating a volume, the size and block size must
2817 * satisfy a few restraints. First, the blocksize must be a
2818 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the
2819 * volsize must be a multiple of the block size, and cannot be
2822 if (props
== NULL
|| nvlist_lookup_uint64(props
,
2823 zfs_prop_to_name(ZFS_PROP_VOLSIZE
), &size
) != 0) {
2825 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2826 "missing volume size"));
2827 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
2830 if ((ret
= nvlist_lookup_uint64(props
,
2831 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE
),
2832 &blocksize
)) != 0) {
2833 if (ret
== ENOENT
) {
2834 blocksize
= zfs_prop_default_numeric(
2835 ZFS_PROP_VOLBLOCKSIZE
);
2838 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2839 "missing volume block size"));
2840 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
2846 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2847 "volume size cannot be zero"));
2848 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
2851 if (size
% blocksize
!= 0) {
2853 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2854 "volume size must be a multiple of volume block "
2856 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
2860 if (props
&& zcmd_write_src_nvlist(hdl
, &zc
, props
) != 0)
2864 /* create the dataset */
2865 ret
= zfs_ioctl(hdl
, ZFS_IOC_CREATE
, &zc
);
2867 zcmd_free_nvlists(&zc
);
2869 /* check for failure */
2871 char parent
[ZFS_MAXNAMELEN
];
2872 (void) parent_name(path
, parent
, sizeof (parent
));
2876 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2877 "no such parent '%s'"), parent
);
2878 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2881 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2882 "parent '%s' is not a filesystem"), parent
);
2883 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
2886 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2887 "volume block size must be power of 2 from "
2889 (uint_t
)SPA_MINBLOCKSIZE
,
2890 (uint_t
)SPA_MAXBLOCKSIZE
>> 10);
2892 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
2895 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2896 "pool must be upgraded to set this "
2897 "property or value"));
2898 return (zfs_error(hdl
, EZFS_BADVERSION
, errbuf
));
2902 * This platform can't address a volume this big.
2904 if (type
== ZFS_TYPE_VOLUME
)
2905 return (zfs_error(hdl
, EZFS_VOLTOOBIG
,
2910 return (zfs_standard_error(hdl
, errno
, errbuf
));
2918 * Destroys the given dataset. The caller must make sure that the filesystem
2919 * isn't mounted, and that there are no active dependents.
2922 zfs_destroy(zfs_handle_t
*zhp
, boolean_t defer
)
2924 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2926 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
2928 if (ZFS_IS_VOLUME(zhp
)) {
2929 zc
.zc_objset_type
= DMU_OST_ZVOL
;
2931 zc
.zc_objset_type
= DMU_OST_ZFS
;
2934 zc
.zc_defer_destroy
= defer
;
2935 if (zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_DESTROY
, &zc
) != 0) {
2936 return (zfs_standard_error_fmt(zhp
->zfs_hdl
, errno
,
2937 dgettext(TEXT_DOMAIN
, "cannot destroy '%s'"),
2941 remove_mountpoint(zhp
);
2946 struct destroydata
{
2953 zfs_check_snap_cb(zfs_handle_t
*zhp
, void *arg
)
2955 struct destroydata
*dd
= arg
;
2957 char name
[ZFS_MAXNAMELEN
];
2958 boolean_t closezhp
= dd
->closezhp
;
2961 (void) strlcpy(name
, zhp
->zfs_name
, sizeof (name
));
2962 (void) strlcat(name
, "@", sizeof (name
));
2963 (void) strlcat(name
, dd
->snapname
, sizeof (name
));
2965 szhp
= make_dataset_handle(zhp
->zfs_hdl
, name
);
2967 dd
->gotone
= B_TRUE
;
2971 dd
->closezhp
= B_TRUE
;
2973 rv
= zfs_iter_filesystems(zhp
, zfs_check_snap_cb
, arg
);
2980 * Destroys all snapshots with the given name in zhp & descendants.
2983 zfs_destroy_snaps(zfs_handle_t
*zhp
, char *snapname
, boolean_t defer
)
2985 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2987 struct destroydata dd
= { 0 };
2989 dd
.snapname
= snapname
;
2990 (void) zfs_check_snap_cb(zhp
, &dd
);
2993 return (zfs_standard_error_fmt(zhp
->zfs_hdl
, ENOENT
,
2994 dgettext(TEXT_DOMAIN
, "cannot destroy '%s@%s'"),
2995 zhp
->zfs_name
, snapname
));
2998 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
2999 (void) strlcpy(zc
.zc_value
, snapname
, sizeof (zc
.zc_value
));
3000 zc
.zc_defer_destroy
= defer
;
3002 ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_DESTROY_SNAPS
, &zc
);
3006 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3007 "cannot destroy '%s@%s'"), zc
.zc_name
, snapname
);
3011 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
3012 "snapshot is cloned"));
3013 return (zfs_error(zhp
->zfs_hdl
, EZFS_EXISTS
, errbuf
));
3016 return (zfs_standard_error(zhp
->zfs_hdl
, errno
,
3025 * Clones the given dataset. The target must be of the same type as the source.
3028 zfs_clone(zfs_handle_t
*zhp
, const char *target
, nvlist_t
*props
)
3030 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3031 char parent
[ZFS_MAXNAMELEN
];
3034 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3038 assert(zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
);
3040 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3041 "cannot create '%s'"), target
);
3043 /* validate the target name */
3044 if (!zfs_validate_name(hdl
, target
, ZFS_TYPE_FILESYSTEM
, B_TRUE
))
3045 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3047 /* validate parents exist */
3048 if (check_parents(hdl
, target
, &zoned
, B_FALSE
, NULL
) != 0)
3051 (void) parent_name(target
, parent
, sizeof (parent
));
3054 if (ZFS_IS_VOLUME(zhp
)) {
3055 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3056 type
= ZFS_TYPE_VOLUME
;
3058 zc
.zc_objset_type
= DMU_OST_ZFS
;
3059 type
= ZFS_TYPE_FILESYSTEM
;
3063 if ((props
= zfs_valid_proplist(hdl
, type
, props
, zoned
,
3064 zhp
, errbuf
)) == NULL
)
3067 if (zcmd_write_src_nvlist(hdl
, &zc
, props
) != 0) {
3075 (void) strlcpy(zc
.zc_name
, target
, sizeof (zc
.zc_name
));
3076 (void) strlcpy(zc
.zc_value
, zhp
->zfs_name
, sizeof (zc
.zc_value
));
3077 ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_CREATE
, &zc
);
3079 zcmd_free_nvlists(&zc
);
3086 * The parent doesn't exist. We should have caught this
3087 * above, but there may a race condition that has since
3088 * destroyed the parent.
3090 * At this point, we don't know whether it's the source
3091 * that doesn't exist anymore, or whether the target
3092 * dataset doesn't exist.
3094 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
3095 "no such parent '%s'"), parent
);
3096 return (zfs_error(zhp
->zfs_hdl
, EZFS_NOENT
, errbuf
));
3099 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
3100 "source and target pools differ"));
3101 return (zfs_error(zhp
->zfs_hdl
, EZFS_CROSSTARGET
,
3105 return (zfs_standard_error(zhp
->zfs_hdl
, errno
,
3114 * Promotes the given clone fs to be the clone parent.
3117 zfs_promote(zfs_handle_t
*zhp
)
3119 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3120 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3121 char parent
[MAXPATHLEN
];
3125 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3126 "cannot promote '%s'"), zhp
->zfs_name
);
3128 if (zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
) {
3129 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3130 "snapshots can not be promoted"));
3131 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3134 (void) strlcpy(parent
, zhp
->zfs_dmustats
.dds_origin
, sizeof (parent
));
3135 if (parent
[0] == '\0') {
3136 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3137 "not a cloned filesystem"));
3138 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3141 (void) strlcpy(zc
.zc_value
, zhp
->zfs_dmustats
.dds_origin
,
3142 sizeof (zc
.zc_value
));
3143 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3144 ret
= zfs_ioctl(hdl
, ZFS_IOC_PROMOTE
, &zc
);
3147 int save_errno
= errno
;
3149 switch (save_errno
) {
3151 /* There is a conflicting snapshot name. */
3152 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3153 "conflicting snapshot '%s' from parent '%s'"),
3154 zc
.zc_string
, parent
);
3155 return (zfs_error(hdl
, EZFS_EXISTS
, errbuf
));
3158 return (zfs_standard_error(hdl
, save_errno
, errbuf
));
3165 * Takes a snapshot of the given dataset.
3168 zfs_snapshot(libzfs_handle_t
*hdl
, const char *path
, boolean_t recursive
,
3172 char parent
[ZFS_MAXNAMELEN
];
3174 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3178 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3179 "cannot snapshot '%s'"), path
);
3181 /* validate the target name */
3182 if (!zfs_validate_name(hdl
, path
, ZFS_TYPE_SNAPSHOT
, B_TRUE
))
3183 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3186 if ((props
= zfs_valid_proplist(hdl
, ZFS_TYPE_SNAPSHOT
,
3187 props
, B_FALSE
, NULL
, errbuf
)) == NULL
)
3190 if (zcmd_write_src_nvlist(hdl
, &zc
, props
) != 0) {
3198 /* make sure the parent exists and is of the appropriate type */
3199 delim
= strchr(path
, '@');
3200 (void) strncpy(parent
, path
, delim
- path
);
3201 parent
[delim
- path
] = '\0';
3203 if ((zhp
= zfs_open(hdl
, parent
, ZFS_TYPE_FILESYSTEM
|
3204 ZFS_TYPE_VOLUME
)) == NULL
) {
3205 zcmd_free_nvlists(&zc
);
3209 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3210 (void) strlcpy(zc
.zc_value
, delim
+1, sizeof (zc
.zc_value
));
3211 if (ZFS_IS_VOLUME(zhp
))
3212 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3214 zc
.zc_objset_type
= DMU_OST_ZFS
;
3215 zc
.zc_cookie
= recursive
;
3216 ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_SNAPSHOT
, &zc
);
3218 zcmd_free_nvlists(&zc
);
3221 * if it was recursive, the one that actually failed will be in
3225 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3226 "cannot create snapshot '%s@%s'"), zc
.zc_name
, zc
.zc_value
);
3227 (void) zfs_standard_error(hdl
, errno
, errbuf
);
3236 * Destroy any more recent snapshots. We invoke this callback on any dependents
3237 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this
3238 * is a dependent and we should just destroy it without checking the transaction
3241 typedef struct rollback_data
{
3242 const char *cb_target
; /* the snapshot */
3243 uint64_t cb_create
; /* creation time reference */
3245 boolean_t cb_dependent
;
3250 rollback_destroy(zfs_handle_t
*zhp
, void *data
)
3252 rollback_data_t
*cbp
= data
;
3254 if (!cbp
->cb_dependent
) {
3255 if (strcmp(zhp
->zfs_name
, cbp
->cb_target
) != 0 &&
3256 zfs_get_type(zhp
) == ZFS_TYPE_SNAPSHOT
&&
3257 zfs_prop_get_int(zhp
, ZFS_PROP_CREATETXG
) >
3261 cbp
->cb_dependent
= B_TRUE
;
3262 cbp
->cb_error
|= zfs_iter_dependents(zhp
, B_FALSE
,
3263 rollback_destroy
, cbp
);
3264 cbp
->cb_dependent
= B_FALSE
;
3266 logstr
= zhp
->zfs_hdl
->libzfs_log_str
;
3267 zhp
->zfs_hdl
->libzfs_log_str
= NULL
;
3268 cbp
->cb_error
|= zfs_destroy(zhp
, B_FALSE
);
3269 zhp
->zfs_hdl
->libzfs_log_str
= logstr
;
3272 /* We must destroy this clone; first unmount it */
3273 prop_changelist_t
*clp
;
3275 clp
= changelist_gather(zhp
, ZFS_PROP_NAME
, 0,
3276 cbp
->cb_force
? MS_FORCE
: 0);
3277 if (clp
== NULL
|| changelist_prefix(clp
) != 0) {
3278 cbp
->cb_error
= B_TRUE
;
3282 if (zfs_destroy(zhp
, B_FALSE
) != 0)
3283 cbp
->cb_error
= B_TRUE
;
3285 changelist_remove(clp
, zhp
->zfs_name
);
3286 (void) changelist_postfix(clp
);
3287 changelist_free(clp
);
3295 * Given a dataset, rollback to a specific snapshot, discarding any
3296 * data changes since then and making it the active dataset.
3298 * Any snapshots more recent than the target are destroyed, along with
3302 zfs_rollback(zfs_handle_t
*zhp
, zfs_handle_t
*snap
, boolean_t force
)
3304 rollback_data_t cb
= { 0 };
3306 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3307 boolean_t restore_resv
= 0;
3308 uint64_t old_volsize
= 0, new_volsize
;
3309 zfs_prop_t resv_prop
= { 0 };
3311 assert(zhp
->zfs_type
== ZFS_TYPE_FILESYSTEM
||
3312 zhp
->zfs_type
== ZFS_TYPE_VOLUME
);
3315 * Destroy all recent snapshots and its dependends.
3317 cb
.cb_force
= force
;
3318 cb
.cb_target
= snap
->zfs_name
;
3319 cb
.cb_create
= zfs_prop_get_int(snap
, ZFS_PROP_CREATETXG
);
3320 (void) zfs_iter_children(zhp
, rollback_destroy
, &cb
);
3326 * Now that we have verified that the snapshot is the latest,
3327 * rollback to the given snapshot.
3330 if (zhp
->zfs_type
== ZFS_TYPE_VOLUME
) {
3331 if (zfs_which_resv_prop(zhp
, &resv_prop
) < 0)
3333 old_volsize
= zfs_prop_get_int(zhp
, ZFS_PROP_VOLSIZE
);
3335 (old_volsize
== zfs_prop_get_int(zhp
, resv_prop
));
3338 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3340 if (ZFS_IS_VOLUME(zhp
))
3341 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3343 zc
.zc_objset_type
= DMU_OST_ZFS
;
3346 * We rely on zfs_iter_children() to verify that there are no
3347 * newer snapshots for the given dataset. Therefore, we can
3348 * simply pass the name on to the ioctl() call. There is still
3349 * an unlikely race condition where the user has taken a
3350 * snapshot since we verified that this was the most recent.
3353 if ((err
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_ROLLBACK
, &zc
)) != 0) {
3354 (void) zfs_standard_error_fmt(zhp
->zfs_hdl
, errno
,
3355 dgettext(TEXT_DOMAIN
, "cannot rollback '%s'"),
3361 * For volumes, if the pre-rollback volsize matched the pre-
3362 * rollback reservation and the volsize has changed then set
3363 * the reservation property to the post-rollback volsize.
3364 * Make a new handle since the rollback closed the dataset.
3366 if ((zhp
->zfs_type
== ZFS_TYPE_VOLUME
) &&
3367 (zhp
= make_dataset_handle(zhp
->zfs_hdl
, zhp
->zfs_name
))) {
3369 new_volsize
= zfs_prop_get_int(zhp
, ZFS_PROP_VOLSIZE
);
3370 if (old_volsize
!= new_volsize
)
3371 err
= zfs_prop_set_int(zhp
, resv_prop
,
3380 * Iterate over all dependents for a given dataset. This includes both
3381 * hierarchical dependents (children) and data dependents (snapshots and
3382 * clones). The bulk of the processing occurs in get_dependents() in
3386 zfs_iter_dependents(zfs_handle_t
*zhp
, boolean_t allowrecursion
,
3387 zfs_iter_f func
, void *data
)
3392 zfs_handle_t
*child
;
3395 if (get_dependents(zhp
->zfs_hdl
, allowrecursion
, zhp
->zfs_name
,
3396 &dependents
, &count
) != 0)
3399 for (i
= 0; i
< count
; i
++) {
3400 if ((child
= make_dataset_handle(zhp
->zfs_hdl
,
3401 dependents
[i
])) == NULL
)
3404 if ((ret
= func(child
, data
)) != 0)
3408 for (i
= 0; i
< count
; i
++)
3409 free(dependents
[i
]);
3416 * Renames the given dataset.
3419 zfs_rename(zfs_handle_t
*zhp
, const char *target
, boolean_t recursive
)
3422 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3424 prop_changelist_t
*cl
= NULL
;
3425 zfs_handle_t
*zhrp
= NULL
;
3426 char *parentname
= NULL
;
3427 char parent
[ZFS_MAXNAMELEN
];
3428 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3431 /* if we have the same exact name, just return success */
3432 if (strcmp(zhp
->zfs_name
, target
) == 0)
3435 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3436 "cannot rename to '%s'"), target
);
3439 * Make sure the target name is valid
3441 if (zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
) {
3442 if ((strchr(target
, '@') == NULL
) ||
3445 * Snapshot target name is abbreviated,
3446 * reconstruct full dataset name
3448 (void) strlcpy(parent
, zhp
->zfs_name
,
3450 delim
= strchr(parent
, '@');
3451 if (strchr(target
, '@') == NULL
)
3455 (void) strlcat(parent
, target
, sizeof (parent
));
3459 * Make sure we're renaming within the same dataset.
3461 delim
= strchr(target
, '@');
3462 if (strncmp(zhp
->zfs_name
, target
, delim
- target
)
3463 != 0 || zhp
->zfs_name
[delim
- target
] != '@') {
3464 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3465 "snapshots must be part of same "
3467 return (zfs_error(hdl
, EZFS_CROSSTARGET
,
3471 if (!zfs_validate_name(hdl
, target
, zhp
->zfs_type
, B_TRUE
))
3472 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3475 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3476 "recursive rename must be a snapshot"));
3477 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3480 if (!zfs_validate_name(hdl
, target
, zhp
->zfs_type
, B_TRUE
))
3481 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3483 /* validate parents */
3484 if (check_parents(hdl
, target
, NULL
, B_FALSE
, NULL
) != 0)
3487 /* make sure we're in the same pool */
3488 verify((delim
= strchr(target
, '/')) != NULL
);
3489 if (strncmp(zhp
->zfs_name
, target
, delim
- target
) != 0 ||
3490 zhp
->zfs_name
[delim
- target
] != '/') {
3491 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3492 "datasets must be within same pool"));
3493 return (zfs_error(hdl
, EZFS_CROSSTARGET
, errbuf
));
3496 /* new name cannot be a child of the current dataset name */
3497 if (is_descendant(zhp
->zfs_name
, target
)) {
3498 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3499 "New dataset name cannot be a descendant of "
3500 "current dataset name"));
3501 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3505 (void) snprintf(errbuf
, sizeof (errbuf
),
3506 dgettext(TEXT_DOMAIN
, "cannot rename '%s'"), zhp
->zfs_name
);
3508 if (getzoneid() == GLOBAL_ZONEID
&&
3509 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
)) {
3510 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3511 "dataset is used in a non-global zone"));
3512 return (zfs_error(hdl
, EZFS_ZONED
, errbuf
));
3517 parentname
= zfs_strdup(zhp
->zfs_hdl
, zhp
->zfs_name
);
3518 if (parentname
== NULL
) {
3522 delim
= strchr(parentname
, '@');
3524 zhrp
= zfs_open(zhp
->zfs_hdl
, parentname
, ZFS_TYPE_DATASET
);
3531 if ((cl
= changelist_gather(zhp
, ZFS_PROP_NAME
, 0, 0)) == NULL
)
3534 if (changelist_haszonedchild(cl
)) {
3535 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3536 "child dataset with inherited mountpoint is used "
3537 "in a non-global zone"));
3538 (void) zfs_error(hdl
, EZFS_ZONED
, errbuf
);
3543 if ((ret
= changelist_prefix(cl
)) != 0)
3547 if (ZFS_IS_VOLUME(zhp
))
3548 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3550 zc
.zc_objset_type
= DMU_OST_ZFS
;
3552 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3553 (void) strlcpy(zc
.zc_value
, target
, sizeof (zc
.zc_value
));
3555 zc
.zc_cookie
= recursive
;
3557 if ((ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_RENAME
, &zc
)) != 0) {
3559 * if it was recursive, the one that actually failed will
3562 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3563 "cannot rename '%s'"), zc
.zc_name
);
3565 if (recursive
&& errno
== EEXIST
) {
3566 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3567 "a child dataset already has a snapshot "
3568 "with the new name"));
3569 (void) zfs_error(hdl
, EZFS_EXISTS
, errbuf
);
3571 (void) zfs_standard_error(zhp
->zfs_hdl
, errno
, errbuf
);
3575 * On failure, we still want to remount any filesystems that
3576 * were previously mounted, so we don't alter the system state.
3579 (void) changelist_postfix(cl
);
3582 changelist_rename(cl
, zfs_get_name(zhp
), target
);
3583 ret
= changelist_postfix(cl
);
3595 changelist_free(cl
);
3601 zfs_get_user_props(zfs_handle_t
*zhp
)
3603 return (zhp
->zfs_user_props
);
3607 zfs_get_recvd_props(zfs_handle_t
*zhp
)
3609 if (zhp
->zfs_recvd_props
== NULL
)
3610 if (get_recvd_props_ioctl(zhp
) != 0)
3612 return (zhp
->zfs_recvd_props
);
3616 * This function is used by 'zfs list' to determine the exact set of columns to
3617 * display, and their maximum widths. This does two main things:
3619 * - If this is a list of all properties, then expand the list to include
3620 * all native properties, and set a flag so that for each dataset we look
3621 * for new unique user properties and add them to the list.
3623 * - For non fixed-width properties, keep track of the maximum width seen
3624 * so that we can size the column appropriately. If the user has
3625 * requested received property values, we also need to compute the width
3626 * of the RECEIVED column.
3629 zfs_expand_proplist(zfs_handle_t
*zhp
, zprop_list_t
**plp
, boolean_t received
)
3631 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3632 zprop_list_t
*entry
;
3633 zprop_list_t
**last
, **start
;
3634 nvlist_t
*userprops
, *propval
;
3637 char buf
[ZFS_MAXPROPLEN
];
3639 if (zprop_expand_list(hdl
, plp
, ZFS_TYPE_DATASET
) != 0)
3642 userprops
= zfs_get_user_props(zhp
);
3645 if (entry
->pl_all
&& nvlist_next_nvpair(userprops
, NULL
) != NULL
) {
3647 * Go through and add any user properties as necessary. We
3648 * start by incrementing our list pointer to the first
3649 * non-native property.
3652 while (*start
!= NULL
) {
3653 if ((*start
)->pl_prop
== ZPROP_INVAL
)
3655 start
= &(*start
)->pl_next
;
3659 while ((elem
= nvlist_next_nvpair(userprops
, elem
)) != NULL
) {
3661 * See if we've already found this property in our list.
3663 for (last
= start
; *last
!= NULL
;
3664 last
= &(*last
)->pl_next
) {
3665 if (strcmp((*last
)->pl_user_prop
,
3666 nvpair_name(elem
)) == 0)
3670 if (*last
== NULL
) {
3671 if ((entry
= zfs_alloc(hdl
,
3672 sizeof (zprop_list_t
))) == NULL
||
3673 ((entry
->pl_user_prop
= zfs_strdup(hdl
,
3674 nvpair_name(elem
)))) == NULL
) {
3679 entry
->pl_prop
= ZPROP_INVAL
;
3680 entry
->pl_width
= strlen(nvpair_name(elem
));
3681 entry
->pl_all
= B_TRUE
;
3688 * Now go through and check the width of any non-fixed columns
3690 for (entry
= *plp
; entry
!= NULL
; entry
= entry
->pl_next
) {
3691 if (entry
->pl_fixed
)
3694 if (entry
->pl_prop
!= ZPROP_INVAL
) {
3695 if (zfs_prop_get(zhp
, entry
->pl_prop
,
3696 buf
, sizeof (buf
), NULL
, NULL
, 0, B_FALSE
) == 0) {
3697 if (strlen(buf
) > entry
->pl_width
)
3698 entry
->pl_width
= strlen(buf
);
3700 if (received
&& zfs_prop_get_recvd(zhp
,
3701 zfs_prop_to_name(entry
->pl_prop
),
3702 buf
, sizeof (buf
), B_FALSE
) == 0)
3703 if (strlen(buf
) > entry
->pl_recvd_width
)
3704 entry
->pl_recvd_width
= strlen(buf
);
3706 if (nvlist_lookup_nvlist(userprops
, entry
->pl_user_prop
,
3708 verify(nvlist_lookup_string(propval
,
3709 ZPROP_VALUE
, &strval
) == 0);
3710 if (strlen(strval
) > entry
->pl_width
)
3711 entry
->pl_width
= strlen(strval
);
3713 if (received
&& zfs_prop_get_recvd(zhp
,
3714 entry
->pl_user_prop
,
3715 buf
, sizeof (buf
), B_FALSE
) == 0)
3716 if (strlen(buf
) > entry
->pl_recvd_width
)
3717 entry
->pl_recvd_width
= strlen(buf
);
3725 zfs_deleg_share_nfs(libzfs_handle_t
*hdl
, char *dataset
, char *path
,
3726 char *resource
, void *export
, void *sharetab
,
3727 int sharemax
, zfs_share_op_t operation
)
3729 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3732 (void) strlcpy(zc
.zc_name
, dataset
, sizeof (zc
.zc_name
));
3733 (void) strlcpy(zc
.zc_value
, path
, sizeof (zc
.zc_value
));
3735 (void) strlcpy(zc
.zc_string
, resource
, sizeof (zc
.zc_string
));
3736 zc
.zc_share
.z_sharedata
= (uint64_t)(uintptr_t)sharetab
;
3737 zc
.zc_share
.z_exportdata
= (uint64_t)(uintptr_t)export
;
3738 zc
.zc_share
.z_sharetype
= operation
;
3739 zc
.zc_share
.z_sharemax
= sharemax
;
3740 error
= ioctl(hdl
->libzfs_fd
, ZFS_IOC_SHARE
, &zc
);
3745 zfs_prune_proplist(zfs_handle_t
*zhp
, uint8_t *props
)
3750 * Keep a reference to the props-table against which we prune the
3753 zhp
->zfs_props_table
= props
;
3755 curr
= nvlist_next_nvpair(zhp
->zfs_props
, NULL
);
3758 zfs_prop_t zfs_prop
= zfs_name_to_prop(nvpair_name(curr
));
3759 nvpair_t
*next
= nvlist_next_nvpair(zhp
->zfs_props
, curr
);
3762 * User properties will result in ZPROP_INVAL, and since we
3763 * only know how to prune standard ZFS properties, we always
3764 * leave these in the list. This can also happen if we
3765 * encounter an unknown DSL property (when running older
3766 * software, for example).
3768 if (zfs_prop
!= ZPROP_INVAL
&& props
[zfs_prop
] == B_FALSE
)
3769 (void) nvlist_remove(zhp
->zfs_props
,
3770 nvpair_name(curr
), nvpair_type(curr
));
3776 zfs_smb_acl_mgmt(libzfs_handle_t
*hdl
, char *dataset
, char *path
,
3777 zfs_smb_acl_op_t cmd
, char *resource1
, char *resource2
)
3779 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3780 nvlist_t
*nvlist
= NULL
;
3783 (void) strlcpy(zc
.zc_name
, dataset
, sizeof (zc
.zc_name
));
3784 (void) strlcpy(zc
.zc_value
, path
, sizeof (zc
.zc_value
));
3785 zc
.zc_cookie
= (uint64_t)cmd
;
3787 if (cmd
== ZFS_SMB_ACL_RENAME
) {
3788 if (nvlist_alloc(&nvlist
, NV_UNIQUE_NAME
, 0) != 0) {
3789 (void) no_memory(hdl
);
3795 case ZFS_SMB_ACL_ADD
:
3796 case ZFS_SMB_ACL_REMOVE
:
3797 (void) strlcpy(zc
.zc_string
, resource1
, sizeof (zc
.zc_string
));
3799 case ZFS_SMB_ACL_RENAME
:
3800 if (nvlist_add_string(nvlist
, ZFS_SMB_ACL_SRC
,
3802 (void) no_memory(hdl
);
3805 if (nvlist_add_string(nvlist
, ZFS_SMB_ACL_TARGET
,
3807 (void) no_memory(hdl
);
3810 if (zcmd_write_src_nvlist(hdl
, &zc
, nvlist
) != 0) {
3811 nvlist_free(nvlist
);
3815 case ZFS_SMB_ACL_PURGE
:
3820 error
= ioctl(hdl
->libzfs_fd
, ZFS_IOC_SMB_ACL
, &zc
);
3822 nvlist_free(nvlist
);
3827 zfs_smb_acl_add(libzfs_handle_t
*hdl
, char *dataset
,
3828 char *path
, char *resource
)
3830 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_ADD
,
3835 zfs_smb_acl_remove(libzfs_handle_t
*hdl
, char *dataset
,
3836 char *path
, char *resource
)
3838 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_REMOVE
,
3843 zfs_smb_acl_purge(libzfs_handle_t
*hdl
, char *dataset
, char *path
)
3845 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_PURGE
,
3850 zfs_smb_acl_rename(libzfs_handle_t
*hdl
, char *dataset
, char *path
,
3851 char *oldname
, char *newname
)
3853 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_RENAME
,
3858 zfs_userspace(zfs_handle_t
*zhp
, zfs_userquota_prop_t type
,
3859 zfs_userspace_cb_t func
, void *arg
)
3861 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3863 zfs_useracct_t buf
[100];
3865 (void) strncpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3867 zc
.zc_objset_type
= type
;
3868 zc
.zc_nvlist_dst
= (uintptr_t)buf
;
3872 zfs_useracct_t
*zua
= buf
;
3874 zc
.zc_nvlist_dst_size
= sizeof (buf
);
3875 error
= ioctl(zhp
->zfs_hdl
->libzfs_fd
,
3876 ZFS_IOC_USERSPACE_MANY
, &zc
);
3877 if (error
|| zc
.zc_nvlist_dst_size
== 0)
3880 while (zc
.zc_nvlist_dst_size
> 0) {
3881 error
= func(arg
, zua
->zu_domain
, zua
->zu_rid
,
3886 zc
.zc_nvlist_dst_size
-= sizeof (zfs_useracct_t
);
3894 zfs_hold(zfs_handle_t
*zhp
, const char *snapname
, const char *tag
,
3895 boolean_t recursive
, boolean_t temphold
, boolean_t enoent_ok
,
3896 int cleanup_fd
, uint64_t dsobj
, uint64_t createtxg
)
3898 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3899 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3901 ASSERT(!recursive
|| dsobj
== 0);
3903 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3904 (void) strlcpy(zc
.zc_value
, snapname
, sizeof (zc
.zc_value
));
3905 if (strlcpy(zc
.zc_string
, tag
, sizeof (zc
.zc_string
))
3906 >= sizeof (zc
.zc_string
))
3907 return (zfs_error(hdl
, EZFS_TAGTOOLONG
, tag
));
3908 zc
.zc_cookie
= recursive
;
3909 zc
.zc_temphold
= temphold
;
3910 zc
.zc_cleanup_fd
= cleanup_fd
;
3911 zc
.zc_sendobj
= dsobj
;
3912 zc
.zc_createtxg
= createtxg
;
3914 if (zfs_ioctl(hdl
, ZFS_IOC_HOLD
, &zc
) != 0) {
3915 char errbuf
[ZFS_MAXNAMELEN
+32];
3918 * if it was recursive, the one that actually failed will be in
3921 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3922 "cannot hold '%s@%s'"), zc
.zc_name
, snapname
);
3926 * Temporary tags wind up having the ds object id
3927 * prepended. So even if we passed the length check
3928 * above, it's still possible for the tag to wind
3929 * up being slightly too long.
3931 return (zfs_error(hdl
, EZFS_TAGTOOLONG
, errbuf
));
3933 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3934 "pool must be upgraded"));
3935 return (zfs_error(hdl
, EZFS_BADVERSION
, errbuf
));
3937 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3939 return (zfs_error(hdl
, EZFS_REFTAG_HOLD
, errbuf
));
3945 return (zfs_standard_error_fmt(hdl
, errno
, errbuf
));
3953 zfs_release(zfs_handle_t
*zhp
, const char *snapname
, const char *tag
,
3954 boolean_t recursive
)
3956 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3957 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3959 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3960 (void) strlcpy(zc
.zc_value
, snapname
, sizeof (zc
.zc_value
));
3961 if (strlcpy(zc
.zc_string
, tag
, sizeof (zc
.zc_string
))
3962 >= sizeof (zc
.zc_string
))
3963 return (zfs_error(hdl
, EZFS_TAGTOOLONG
, tag
));
3964 zc
.zc_cookie
= recursive
;
3966 if (zfs_ioctl(hdl
, ZFS_IOC_RELEASE
, &zc
) != 0) {
3967 char errbuf
[ZFS_MAXNAMELEN
+32];
3970 * if it was recursive, the one that actually failed will be in
3973 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3974 "cannot release '%s' from '%s@%s'"), tag
, zc
.zc_name
,
3978 return (zfs_error(hdl
, EZFS_REFTAG_RELE
, errbuf
));
3980 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3981 "pool must be upgraded"));
3982 return (zfs_error(hdl
, EZFS_BADVERSION
, errbuf
));
3984 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3986 return (zfs_standard_error_fmt(hdl
, errno
, errbuf
));
3994 zvol_volsize_to_reservation(uint64_t volsize
, nvlist_t
*props
)
3997 uint64_t nblocks
, volblocksize
;
4001 if (nvlist_lookup_string(props
,
4002 zfs_prop_to_name(ZFS_PROP_COPIES
), &strval
) == 0)
4003 ncopies
= atoi(strval
);
4006 if (nvlist_lookup_uint64(props
,
4007 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE
),
4008 &volblocksize
) != 0)
4009 volblocksize
= ZVOL_DEFAULT_BLOCKSIZE
;
4010 nblocks
= volsize
/volblocksize
;
4011 /* start with metadnode L0-L6 */
4013 /* calculate number of indirects */
4014 while (nblocks
> 1) {
4015 nblocks
+= DNODES_PER_LEVEL
- 1;
4016 nblocks
/= DNODES_PER_LEVEL
;
4019 numdb
*= MIN(SPA_DVAS_PER_BP
, ncopies
+ 1);
4022 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't
4023 * compressed, but in practice they compress down to about
4026 numdb
*= 1ULL << DN_MAX_INDBLKSHIFT
;