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>
47 #include <directory.h>
48 #endif /* HAVE_IDMAP */
50 #include <sys/dnode.h>
55 #include "zfs_namecheck.h"
57 #include "libzfs_impl.h"
58 #include "zfs_deleg.h"
60 static int userquota_propname_decode(const char *propname
, boolean_t zoned
,
61 zfs_userquota_prop_t
*typep
, char *domain
, int domainlen
, uint64_t *ridp
);
64 * Given a single type (not a mask of types), return the type in a human
68 zfs_type_to_name(zfs_type_t type
)
71 case ZFS_TYPE_FILESYSTEM
:
72 return (dgettext(TEXT_DOMAIN
, "filesystem"));
73 case ZFS_TYPE_SNAPSHOT
:
74 return (dgettext(TEXT_DOMAIN
, "snapshot"));
76 return (dgettext(TEXT_DOMAIN
, "volume"));
85 * Validate a ZFS path. This is used even before trying to open the dataset, to
86 * provide a more meaningful error message. We call zfs_error_aux() to
87 * explain exactly why the name was not valid.
90 zfs_validate_name(libzfs_handle_t
*hdl
, const char *path
, int type
,
96 if (dataset_namecheck(path
, &why
, &what
) != 0) {
99 case NAME_ERR_TOOLONG
:
100 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
101 "name is too long"));
104 case NAME_ERR_LEADING_SLASH
:
105 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
106 "leading slash in name"));
109 case NAME_ERR_EMPTY_COMPONENT
:
110 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
111 "empty component in name"));
114 case NAME_ERR_TRAILING_SLASH
:
115 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
116 "trailing slash in name"));
119 case NAME_ERR_INVALCHAR
:
121 dgettext(TEXT_DOMAIN
, "invalid character "
122 "'%c' in name"), what
);
125 case NAME_ERR_MULTIPLE_AT
:
126 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
127 "multiple '@' delimiters in name"));
130 case NAME_ERR_NOLETTER
:
131 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
132 "pool doesn't begin with a letter"));
135 case NAME_ERR_RESERVED
:
136 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
137 "name is reserved"));
140 case NAME_ERR_DISKLIKE
:
141 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
142 "reserved disk name"));
152 if (!(type
& ZFS_TYPE_SNAPSHOT
) && strchr(path
, '@') != NULL
) {
154 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
155 "snapshot delimiter '@' in filesystem name"));
159 if (type
== ZFS_TYPE_SNAPSHOT
&& strchr(path
, '@') == NULL
) {
161 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
162 "missing '@' delimiter in snapshot name"));
166 if (modifying
&& strchr(path
, '%') != NULL
) {
168 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
169 "invalid character %c in name"), '%');
177 zfs_name_valid(const char *name
, zfs_type_t type
)
179 if (type
== ZFS_TYPE_POOL
)
180 return (zpool_name_valid(NULL
, B_FALSE
, name
));
181 return (zfs_validate_name(NULL
, name
, type
, B_FALSE
));
185 * This function takes the raw DSL properties, and filters out the user-defined
186 * properties into a separate nvlist.
189 process_user_props(zfs_handle_t
*zhp
, nvlist_t
*props
)
191 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
196 if (nvlist_alloc(&nvl
, NV_UNIQUE_NAME
, 0) != 0) {
197 (void) no_memory(hdl
);
202 while ((elem
= nvlist_next_nvpair(props
, elem
)) != NULL
) {
203 if (!zfs_prop_user(nvpair_name(elem
)))
206 verify(nvpair_value_nvlist(elem
, &propval
) == 0);
207 if (nvlist_add_nvlist(nvl
, nvpair_name(elem
), propval
) != 0) {
209 (void) no_memory(hdl
);
217 static zpool_handle_t
*
218 zpool_add_handle(zfs_handle_t
*zhp
, const char *pool_name
)
220 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
223 if ((zph
= zpool_open_canfail(hdl
, pool_name
)) != NULL
) {
224 if (hdl
->libzfs_pool_handles
!= NULL
)
225 zph
->zpool_next
= hdl
->libzfs_pool_handles
;
226 hdl
->libzfs_pool_handles
= zph
;
231 static zpool_handle_t
*
232 zpool_find_handle(zfs_handle_t
*zhp
, const char *pool_name
, int len
)
234 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
235 zpool_handle_t
*zph
= hdl
->libzfs_pool_handles
;
237 while ((zph
!= NULL
) &&
238 (strncmp(pool_name
, zpool_get_name(zph
), len
) != 0))
239 zph
= zph
->zpool_next
;
244 * Returns a handle to the pool that contains the provided dataset.
245 * If a handle to that pool already exists then that handle is returned.
246 * Otherwise, a new handle is created and added to the list of handles.
248 static zpool_handle_t
*
249 zpool_handle(zfs_handle_t
*zhp
)
255 len
= strcspn(zhp
->zfs_name
, "/@") + 1;
256 pool_name
= zfs_alloc(zhp
->zfs_hdl
, len
);
257 (void) strlcpy(pool_name
, zhp
->zfs_name
, len
);
259 zph
= zpool_find_handle(zhp
, pool_name
, len
);
261 zph
= zpool_add_handle(zhp
, pool_name
);
268 zpool_free_handles(libzfs_handle_t
*hdl
)
270 zpool_handle_t
*next
, *zph
= hdl
->libzfs_pool_handles
;
272 while (zph
!= NULL
) {
273 next
= zph
->zpool_next
;
277 hdl
->libzfs_pool_handles
= NULL
;
281 * Utility function to gather stats (objset and zpl) for the given object.
284 get_stats_ioctl(zfs_handle_t
*zhp
, zfs_cmd_t
*zc
)
286 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
288 (void) strlcpy(zc
->zc_name
, zhp
->zfs_name
, sizeof (zc
->zc_name
));
290 while (ioctl(hdl
->libzfs_fd
, ZFS_IOC_OBJSET_STATS
, zc
) != 0) {
291 if (errno
== ENOMEM
) {
292 if (zcmd_expand_dst_nvlist(hdl
, zc
) != 0) {
303 * Utility function to get the received properties of the given object.
306 get_recvd_props_ioctl(zfs_handle_t
*zhp
)
308 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
309 nvlist_t
*recvdprops
;
310 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
313 if (zcmd_alloc_dst_nvlist(hdl
, &zc
, 0) != 0)
316 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
318 while (ioctl(hdl
->libzfs_fd
, ZFS_IOC_OBJSET_RECVD_PROPS
, &zc
) != 0) {
319 if (errno
== ENOMEM
) {
320 if (zcmd_expand_dst_nvlist(hdl
, &zc
) != 0) {
324 zcmd_free_nvlists(&zc
);
329 err
= zcmd_read_dst_nvlist(zhp
->zfs_hdl
, &zc
, &recvdprops
);
330 zcmd_free_nvlists(&zc
);
334 nvlist_free(zhp
->zfs_recvd_props
);
335 zhp
->zfs_recvd_props
= recvdprops
;
341 put_stats_zhdl(zfs_handle_t
*zhp
, zfs_cmd_t
*zc
)
343 nvlist_t
*allprops
, *userprops
;
345 zhp
->zfs_dmustats
= zc
->zc_objset_stats
; /* structure assignment */
347 if (zcmd_read_dst_nvlist(zhp
->zfs_hdl
, zc
, &allprops
) != 0) {
352 * XXX Why do we store the user props separately, in addition to
353 * storing them in zfs_props?
355 if ((userprops
= process_user_props(zhp
, allprops
)) == NULL
) {
356 nvlist_free(allprops
);
360 nvlist_free(zhp
->zfs_props
);
361 nvlist_free(zhp
->zfs_user_props
);
363 zhp
->zfs_props
= allprops
;
364 zhp
->zfs_user_props
= userprops
;
370 get_stats(zfs_handle_t
*zhp
)
373 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
375 if (zcmd_alloc_dst_nvlist(zhp
->zfs_hdl
, &zc
, 0) != 0)
377 if (get_stats_ioctl(zhp
, &zc
) != 0)
379 else if (put_stats_zhdl(zhp
, &zc
) != 0)
381 zcmd_free_nvlists(&zc
);
386 * Refresh the properties currently stored in the handle.
389 zfs_refresh_properties(zfs_handle_t
*zhp
)
391 (void) get_stats(zhp
);
395 * Makes a handle from the given dataset name. Used by zfs_open() and
396 * zfs_iter_* to create child handles on the fly.
399 make_dataset_handle_common(zfs_handle_t
*zhp
, zfs_cmd_t
*zc
)
401 if (put_stats_zhdl(zhp
, zc
) != 0)
405 * We've managed to open the dataset and gather statistics. Determine
406 * the high-level type.
408 if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZVOL
)
409 zhp
->zfs_head_type
= ZFS_TYPE_VOLUME
;
410 else if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZFS
)
411 zhp
->zfs_head_type
= ZFS_TYPE_FILESYSTEM
;
415 if (zhp
->zfs_dmustats
.dds_is_snapshot
)
416 zhp
->zfs_type
= ZFS_TYPE_SNAPSHOT
;
417 else if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZVOL
)
418 zhp
->zfs_type
= ZFS_TYPE_VOLUME
;
419 else if (zhp
->zfs_dmustats
.dds_type
== DMU_OST_ZFS
)
420 zhp
->zfs_type
= ZFS_TYPE_FILESYSTEM
;
422 abort(); /* we should never see any other types */
424 if ((zhp
->zpool_hdl
= zpool_handle(zhp
)) == NULL
)
431 make_dataset_handle(libzfs_handle_t
*hdl
, const char *path
)
433 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
435 zfs_handle_t
*zhp
= calloc(sizeof (zfs_handle_t
), 1);
441 (void) strlcpy(zhp
->zfs_name
, path
, sizeof (zhp
->zfs_name
));
442 if (zcmd_alloc_dst_nvlist(hdl
, &zc
, 0) != 0) {
446 if (get_stats_ioctl(zhp
, &zc
) == -1) {
447 zcmd_free_nvlists(&zc
);
451 if (make_dataset_handle_common(zhp
, &zc
) == -1) {
455 zcmd_free_nvlists(&zc
);
459 static zfs_handle_t
*
460 make_dataset_handle_zc(libzfs_handle_t
*hdl
, zfs_cmd_t
*zc
)
462 zfs_handle_t
*zhp
= calloc(sizeof (zfs_handle_t
), 1);
468 (void) strlcpy(zhp
->zfs_name
, zc
->zc_name
, sizeof (zhp
->zfs_name
));
469 if (make_dataset_handle_common(zhp
, zc
) == -1) {
477 * Opens the given snapshot, filesystem, or volume. The 'types'
478 * argument is a mask of acceptable types. The function will print an
479 * appropriate error message and return NULL if it can't be opened.
482 zfs_open(libzfs_handle_t
*hdl
, const char *path
, int types
)
487 (void) snprintf(errbuf
, sizeof (errbuf
),
488 dgettext(TEXT_DOMAIN
, "cannot open '%s'"), path
);
491 * Validate the name before we even try to open it.
493 if (!zfs_validate_name(hdl
, path
, ZFS_TYPE_DATASET
, B_FALSE
)) {
494 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
495 "invalid dataset name"));
496 (void) zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
);
501 * Try to get stats for the dataset, which will tell us if it exists.
504 if ((zhp
= make_dataset_handle(hdl
, path
)) == NULL
) {
505 (void) zfs_standard_error(hdl
, errno
, errbuf
);
509 if (!(types
& zhp
->zfs_type
)) {
510 (void) zfs_error(hdl
, EZFS_BADTYPE
, errbuf
);
519 * Release a ZFS handle. Nothing to do but free the associated memory.
522 zfs_close(zfs_handle_t
*zhp
)
524 if (zhp
->zfs_mntopts
)
525 free(zhp
->zfs_mntopts
);
526 nvlist_free(zhp
->zfs_props
);
527 nvlist_free(zhp
->zfs_user_props
);
528 nvlist_free(zhp
->zfs_recvd_props
);
532 typedef struct mnttab_node
{
533 struct mnttab mtn_mt
;
538 libzfs_mnttab_cache_compare(const void *arg1
, const void *arg2
)
540 const mnttab_node_t
*mtn1
= arg1
;
541 const mnttab_node_t
*mtn2
= arg2
;
544 rv
= strcmp(mtn1
->mtn_mt
.mnt_special
, mtn2
->mtn_mt
.mnt_special
);
548 return (rv
> 0 ? 1 : -1);
552 libzfs_mnttab_init(libzfs_handle_t
*hdl
)
554 assert(avl_numnodes(&hdl
->libzfs_mnttab_cache
) == 0);
555 avl_create(&hdl
->libzfs_mnttab_cache
, libzfs_mnttab_cache_compare
,
556 sizeof (mnttab_node_t
), offsetof(mnttab_node_t
, mtn_node
));
560 libzfs_mnttab_update(libzfs_handle_t
*hdl
)
564 rewind(hdl
->libzfs_mnttab
);
565 while (getmntent(hdl
->libzfs_mnttab
, &entry
) == 0) {
568 if (strcmp(entry
.mnt_fstype
, MNTTYPE_ZFS
) != 0)
570 mtn
= zfs_alloc(hdl
, sizeof (mnttab_node_t
));
571 mtn
->mtn_mt
.mnt_special
= zfs_strdup(hdl
, entry
.mnt_special
);
572 mtn
->mtn_mt
.mnt_mountp
= zfs_strdup(hdl
, entry
.mnt_mountp
);
573 mtn
->mtn_mt
.mnt_fstype
= zfs_strdup(hdl
, entry
.mnt_fstype
);
574 mtn
->mtn_mt
.mnt_mntopts
= zfs_strdup(hdl
, entry
.mnt_mntopts
);
575 avl_add(&hdl
->libzfs_mnttab_cache
, mtn
);
580 libzfs_mnttab_fini(libzfs_handle_t
*hdl
)
585 while ((mtn
= avl_destroy_nodes(&hdl
->libzfs_mnttab_cache
, &cookie
))) {
586 free(mtn
->mtn_mt
.mnt_special
);
587 free(mtn
->mtn_mt
.mnt_mountp
);
588 free(mtn
->mtn_mt
.mnt_fstype
);
589 free(mtn
->mtn_mt
.mnt_mntopts
);
592 avl_destroy(&hdl
->libzfs_mnttab_cache
);
596 libzfs_mnttab_cache(libzfs_handle_t
*hdl
, boolean_t enable
)
598 hdl
->libzfs_mnttab_enable
= enable
;
602 libzfs_mnttab_find(libzfs_handle_t
*hdl
, const char *fsname
,
603 struct mnttab
*entry
)
608 if (!hdl
->libzfs_mnttab_enable
) {
609 struct mnttab srch
= { 0 };
611 if (avl_numnodes(&hdl
->libzfs_mnttab_cache
))
612 libzfs_mnttab_fini(hdl
);
613 rewind(hdl
->libzfs_mnttab
);
614 srch
.mnt_special
= (char *)fsname
;
615 srch
.mnt_fstype
= MNTTYPE_ZFS
;
616 if (getmntany(hdl
->libzfs_mnttab
, entry
, &srch
) == 0)
622 if (avl_numnodes(&hdl
->libzfs_mnttab_cache
) == 0)
623 libzfs_mnttab_update(hdl
);
625 find
.mtn_mt
.mnt_special
= (char *)fsname
;
626 mtn
= avl_find(&hdl
->libzfs_mnttab_cache
, &find
, NULL
);
628 *entry
= mtn
->mtn_mt
;
635 libzfs_mnttab_add(libzfs_handle_t
*hdl
, const char *special
,
636 const char *mountp
, const char *mntopts
)
640 if (avl_numnodes(&hdl
->libzfs_mnttab_cache
) == 0)
642 mtn
= zfs_alloc(hdl
, sizeof (mnttab_node_t
));
643 mtn
->mtn_mt
.mnt_special
= zfs_strdup(hdl
, special
);
644 mtn
->mtn_mt
.mnt_mountp
= zfs_strdup(hdl
, mountp
);
645 mtn
->mtn_mt
.mnt_fstype
= zfs_strdup(hdl
, MNTTYPE_ZFS
);
646 mtn
->mtn_mt
.mnt_mntopts
= zfs_strdup(hdl
, mntopts
);
647 avl_add(&hdl
->libzfs_mnttab_cache
, mtn
);
651 libzfs_mnttab_remove(libzfs_handle_t
*hdl
, const char *fsname
)
656 find
.mtn_mt
.mnt_special
= (char *)fsname
;
657 if ((ret
= avl_find(&hdl
->libzfs_mnttab_cache
, (void *)&find
, NULL
))) {
658 avl_remove(&hdl
->libzfs_mnttab_cache
, ret
);
659 free(ret
->mtn_mt
.mnt_special
);
660 free(ret
->mtn_mt
.mnt_mountp
);
661 free(ret
->mtn_mt
.mnt_fstype
);
662 free(ret
->mtn_mt
.mnt_mntopts
);
668 zfs_spa_version(zfs_handle_t
*zhp
, int *spa_version
)
670 zpool_handle_t
*zpool_handle
= zhp
->zpool_hdl
;
672 if (zpool_handle
== NULL
)
675 *spa_version
= zpool_get_prop_int(zpool_handle
,
676 ZPOOL_PROP_VERSION
, NULL
);
681 * The choice of reservation property depends on the SPA version.
684 zfs_which_resv_prop(zfs_handle_t
*zhp
, zfs_prop_t
*resv_prop
)
688 if (zfs_spa_version(zhp
, &spa_version
) < 0)
691 if (spa_version
>= SPA_VERSION_REFRESERVATION
)
692 *resv_prop
= ZFS_PROP_REFRESERVATION
;
694 *resv_prop
= ZFS_PROP_RESERVATION
;
700 * Given an nvlist of properties to set, validates that they are correct, and
701 * parses any numeric properties (index, boolean, etc) if they are specified as
705 zfs_valid_proplist(libzfs_handle_t
*hdl
, zfs_type_t type
, nvlist_t
*nvl
,
706 uint64_t zoned
, zfs_handle_t
*zhp
, const char *errbuf
)
713 int chosen_normal
= -1;
716 if (nvlist_alloc(&ret
, NV_UNIQUE_NAME
, 0) != 0) {
717 (void) no_memory(hdl
);
722 * Make sure this property is valid and applies to this type.
726 while ((elem
= nvlist_next_nvpair(nvl
, elem
)) != NULL
) {
727 const char *propname
= nvpair_name(elem
);
729 prop
= zfs_name_to_prop(propname
);
730 if (prop
== ZPROP_INVAL
&& zfs_prop_user(propname
)) {
732 * This is a user property: make sure it's a
733 * string, and that it's less than ZAP_MAXNAMELEN.
735 if (nvpair_type(elem
) != DATA_TYPE_STRING
) {
736 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
737 "'%s' must be a string"), propname
);
738 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
742 if (strlen(nvpair_name(elem
)) >= ZAP_MAXNAMELEN
) {
743 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
744 "property name '%s' is too long"),
746 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
750 (void) nvpair_value_string(elem
, &strval
);
751 if (nvlist_add_string(ret
, propname
, strval
) != 0) {
752 (void) no_memory(hdl
);
759 * Currently, only user properties can be modified on
762 if (type
== ZFS_TYPE_SNAPSHOT
) {
763 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
764 "this property can not be modified for snapshots"));
765 (void) zfs_error(hdl
, EZFS_PROPTYPE
, errbuf
);
769 if (prop
== ZPROP_INVAL
&& zfs_prop_userquota(propname
)) {
770 zfs_userquota_prop_t uqtype
;
771 char newpropname
[128];
776 if (userquota_propname_decode(propname
, zoned
,
777 &uqtype
, domain
, sizeof (domain
), &rid
) != 0) {
779 dgettext(TEXT_DOMAIN
,
780 "'%s' has an invalid user/group name"),
782 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
786 if (uqtype
!= ZFS_PROP_USERQUOTA
&&
787 uqtype
!= ZFS_PROP_GROUPQUOTA
) {
789 dgettext(TEXT_DOMAIN
, "'%s' is readonly"),
791 (void) zfs_error(hdl
, EZFS_PROPREADONLY
,
796 if (nvpair_type(elem
) == DATA_TYPE_STRING
) {
797 (void) nvpair_value_string(elem
, &strval
);
798 if (strcmp(strval
, "none") == 0) {
800 } else if (zfs_nicestrtonum(hdl
,
801 strval
, &intval
) != 0) {
802 (void) zfs_error(hdl
,
803 EZFS_BADPROP
, errbuf
);
806 } else if (nvpair_type(elem
) ==
808 (void) nvpair_value_uint64(elem
, &intval
);
810 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
811 "use 'none' to disable "
812 "userquota/groupquota"));
816 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
817 "'%s' must be a number"), propname
);
818 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
823 * Encode the prop name as
824 * userquota@<hex-rid>-domain, to make it easy
825 * for the kernel to decode.
827 (void) snprintf(newpropname
, sizeof (newpropname
),
828 "%s%llx-%s", zfs_userquota_prop_prefixes
[uqtype
],
829 (longlong_t
)rid
, domain
);
833 if (nvlist_add_uint64_array(ret
, newpropname
,
835 (void) no_memory(hdl
);
841 if (prop
== ZPROP_INVAL
) {
842 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
843 "invalid property '%s'"), propname
);
844 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
848 if (!zfs_prop_valid_for_type(prop
, type
)) {
850 dgettext(TEXT_DOMAIN
, "'%s' does not "
851 "apply to datasets of this type"), propname
);
852 (void) zfs_error(hdl
, EZFS_PROPTYPE
, errbuf
);
856 if (zfs_prop_readonly(prop
) &&
857 (!zfs_prop_setonce(prop
) || zhp
!= NULL
)) {
859 dgettext(TEXT_DOMAIN
, "'%s' is readonly"),
861 (void) zfs_error(hdl
, EZFS_PROPREADONLY
, errbuf
);
865 if (zprop_parse_value(hdl
, elem
, prop
, type
, ret
,
866 &strval
, &intval
, errbuf
) != 0)
870 * Perform some additional checks for specific properties.
873 case ZFS_PROP_VERSION
:
879 version
= zfs_prop_get_int(zhp
, ZFS_PROP_VERSION
);
880 if (intval
< version
) {
881 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
882 "Can not downgrade; already at version %u"),
884 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
890 case ZFS_PROP_RECORDSIZE
:
891 case ZFS_PROP_VOLBLOCKSIZE
:
892 /* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */
893 if (intval
< SPA_MINBLOCKSIZE
||
894 intval
> SPA_MAXBLOCKSIZE
|| !ISP2(intval
)) {
895 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
896 "'%s' must be power of 2 from %u "
898 (uint_t
)SPA_MINBLOCKSIZE
,
899 (uint_t
)SPA_MAXBLOCKSIZE
>> 10);
900 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
905 case ZFS_PROP_MLSLABEL
:
909 * Verify the mlslabel string and convert to
910 * internal hex label string.
914 char *hex
= NULL
; /* internal label string */
916 /* Default value is already OK. */
917 if (strcasecmp(strval
, ZFS_MLSLABEL_DEFAULT
) == 0)
920 /* Verify the label can be converted to binary form */
921 if (((new_sl
= m_label_alloc(MAC_LABEL
)) == NULL
) ||
922 (str_to_label(strval
, &new_sl
, MAC_LABEL
,
923 L_NO_CORRECTION
, NULL
) == -1)) {
927 /* Now translate to hex internal label string */
928 if (label_to_str(new_sl
, &hex
, M_INTERNAL
,
934 m_label_free(new_sl
);
936 /* If string is already in internal form, we're done. */
937 if (strcmp(strval
, hex
) == 0) {
942 /* Replace the label string with the internal form. */
943 (void) nvlist_remove(ret
, zfs_prop_to_name(prop
),
945 verify(nvlist_add_string(ret
, zfs_prop_to_name(prop
),
952 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
953 "invalid mlslabel '%s'"), strval
);
954 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
955 m_label_free(new_sl
); /* OK if null */
958 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
959 "mlslabels are unsupported"));
960 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
962 #endif /* HAVE_MLSLABEL */
965 case ZFS_PROP_MOUNTPOINT
:
969 if (strcmp(strval
, ZFS_MOUNTPOINT_NONE
) == 0 ||
970 strcmp(strval
, ZFS_MOUNTPOINT_LEGACY
) == 0)
973 if (mountpoint_namecheck(strval
, &why
)) {
975 case NAME_ERR_LEADING_SLASH
:
977 dgettext(TEXT_DOMAIN
,
978 "'%s' must be an absolute path, "
979 "'none', or 'legacy'"), propname
);
981 case NAME_ERR_TOOLONG
:
983 dgettext(TEXT_DOMAIN
,
984 "component of '%s' is too long"),
990 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
997 case ZFS_PROP_SHARESMB
:
998 case ZFS_PROP_SHARENFS
:
1000 * For the mountpoint and sharenfs or sharesmb
1001 * properties, check if it can be set in a
1002 * global/non-global zone based on
1003 * the zoned property value:
1005 * global zone non-global zone
1006 * --------------------------------------------------
1007 * zoned=on mountpoint (no) mountpoint (yes)
1008 * sharenfs (no) sharenfs (no)
1009 * sharesmb (no) sharesmb (no)
1011 * zoned=off mountpoint (yes) N/A
1016 if (getzoneid() == GLOBAL_ZONEID
) {
1017 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1018 "'%s' cannot be set on "
1019 "dataset in a non-global zone"),
1021 (void) zfs_error(hdl
, EZFS_ZONED
,
1024 } else if (prop
== ZFS_PROP_SHARENFS
||
1025 prop
== ZFS_PROP_SHARESMB
) {
1026 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1027 "'%s' cannot be set in "
1028 "a non-global zone"), propname
);
1029 (void) zfs_error(hdl
, EZFS_ZONED
,
1033 } else if (getzoneid() != GLOBAL_ZONEID
) {
1035 * If zoned property is 'off', this must be in
1036 * a global zone. If not, something is wrong.
1038 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1039 "'%s' cannot be set while dataset "
1040 "'zoned' property is set"), propname
);
1041 (void) zfs_error(hdl
, EZFS_ZONED
, errbuf
);
1046 * At this point, it is legitimate to set the
1047 * property. Now we want to make sure that the
1048 * property value is valid if it is sharenfs.
1050 if ((prop
== ZFS_PROP_SHARENFS
||
1051 prop
== ZFS_PROP_SHARESMB
) &&
1052 strcmp(strval
, "on") != 0 &&
1053 strcmp(strval
, "off") != 0) {
1054 zfs_share_proto_t proto
;
1056 if (prop
== ZFS_PROP_SHARESMB
)
1062 * Must be an valid sharing protocol
1063 * option string so init the libshare
1064 * in order to enable the parser and
1065 * then parse the options. We use the
1066 * control API since we don't care about
1067 * the current configuration and don't
1068 * want the overhead of loading it
1069 * until we actually do something.
1072 if (zfs_init_libshare(hdl
,
1073 SA_INIT_CONTROL_API
) != SA_OK
) {
1075 * An error occurred so we can't do
1078 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1079 "'%s' cannot be set: problem "
1080 "in share initialization"),
1082 (void) zfs_error(hdl
, EZFS_BADPROP
,
1087 if (zfs_parse_options(strval
, proto
) != SA_OK
) {
1089 * There was an error in parsing so
1090 * deal with it by issuing an error
1091 * message and leaving after
1092 * uninitializing the the libshare
1095 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1096 "'%s' cannot be set to invalid "
1097 "options"), propname
);
1098 (void) zfs_error(hdl
, EZFS_BADPROP
,
1100 zfs_uninit_libshare(hdl
);
1103 zfs_uninit_libshare(hdl
);
1107 case ZFS_PROP_UTF8ONLY
:
1108 chosen_utf
= (int)intval
;
1110 case ZFS_PROP_NORMALIZE
:
1111 chosen_normal
= (int)intval
;
1118 * For changes to existing volumes, we have some additional
1119 * checks to enforce.
1121 if (type
== ZFS_TYPE_VOLUME
&& zhp
!= NULL
) {
1122 uint64_t volsize
= zfs_prop_get_int(zhp
,
1124 uint64_t blocksize
= zfs_prop_get_int(zhp
,
1125 ZFS_PROP_VOLBLOCKSIZE
);
1129 case ZFS_PROP_RESERVATION
:
1130 case ZFS_PROP_REFRESERVATION
:
1131 if (intval
> volsize
) {
1132 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1133 "'%s' is greater than current "
1134 "volume size"), propname
);
1135 (void) zfs_error(hdl
, EZFS_BADPROP
,
1141 case ZFS_PROP_VOLSIZE
:
1142 if (intval
% blocksize
!= 0) {
1143 zfs_nicenum(blocksize
, buf
,
1145 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1146 "'%s' must be a multiple of "
1147 "volume block size (%s)"),
1149 (void) zfs_error(hdl
, EZFS_BADPROP
,
1155 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1156 "'%s' cannot be zero"),
1158 (void) zfs_error(hdl
, EZFS_BADPROP
,
1170 * If normalization was chosen, but no UTF8 choice was made,
1171 * enforce rejection of non-UTF8 names.
1173 * If normalization was chosen, but rejecting non-UTF8 names
1174 * was explicitly not chosen, it is an error.
1176 if (chosen_normal
> 0 && chosen_utf
< 0) {
1177 if (nvlist_add_uint64(ret
,
1178 zfs_prop_to_name(ZFS_PROP_UTF8ONLY
), 1) != 0) {
1179 (void) no_memory(hdl
);
1182 } else if (chosen_normal
> 0 && chosen_utf
== 0) {
1183 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1184 "'%s' must be set 'on' if normalization chosen"),
1185 zfs_prop_to_name(ZFS_PROP_UTF8ONLY
));
1186 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
1197 zfs_add_synthetic_resv(zfs_handle_t
*zhp
, nvlist_t
*nvl
)
1199 uint64_t old_volsize
;
1200 uint64_t new_volsize
;
1201 uint64_t old_reservation
;
1202 uint64_t new_reservation
;
1203 zfs_prop_t resv_prop
;
1206 * If this is an existing volume, and someone is setting the volsize,
1207 * make sure that it matches the reservation, or add it if necessary.
1209 old_volsize
= zfs_prop_get_int(zhp
, ZFS_PROP_VOLSIZE
);
1210 if (zfs_which_resv_prop(zhp
, &resv_prop
) < 0)
1212 old_reservation
= zfs_prop_get_int(zhp
, resv_prop
);
1213 if ((zvol_volsize_to_reservation(old_volsize
, zhp
->zfs_props
) !=
1214 old_reservation
) || nvlist_lookup_uint64(nvl
,
1215 zfs_prop_to_name(resv_prop
), &new_reservation
) != ENOENT
) {
1218 if (nvlist_lookup_uint64(nvl
, zfs_prop_to_name(ZFS_PROP_VOLSIZE
),
1221 new_reservation
= zvol_volsize_to_reservation(new_volsize
,
1223 if (nvlist_add_uint64(nvl
, zfs_prop_to_name(resv_prop
),
1224 new_reservation
) != 0) {
1225 (void) no_memory(zhp
->zfs_hdl
);
1232 zfs_setprop_error(libzfs_handle_t
*hdl
, zfs_prop_t prop
, int err
,
1239 * For quotas and reservations, ENOSPC indicates
1240 * something different; setting a quota or reservation
1241 * doesn't use any disk space.
1244 case ZFS_PROP_QUOTA
:
1245 case ZFS_PROP_REFQUOTA
:
1246 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1247 "size is less than current used or "
1249 (void) zfs_error(hdl
, EZFS_PROPSPACE
, errbuf
);
1252 case ZFS_PROP_RESERVATION
:
1253 case ZFS_PROP_REFRESERVATION
:
1254 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1255 "size is greater than available space"));
1256 (void) zfs_error(hdl
, EZFS_PROPSPACE
, errbuf
);
1260 (void) zfs_standard_error(hdl
, err
, errbuf
);
1266 (void) zfs_standard_error(hdl
, EBUSY
, errbuf
);
1270 (void) zfs_error(hdl
, EZFS_DSREADONLY
, errbuf
);
1274 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1275 "pool and or dataset must be upgraded to set this "
1276 "property or value"));
1277 (void) zfs_error(hdl
, EZFS_BADVERSION
, errbuf
);
1281 if (prop
== ZFS_PROP_COMPRESSION
) {
1282 (void) zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1283 "property setting is not allowed on "
1284 "bootable datasets"));
1285 (void) zfs_error(hdl
, EZFS_NOTSUP
, errbuf
);
1287 (void) zfs_standard_error(hdl
, err
, errbuf
);
1292 if (prop
== ZPROP_INVAL
) {
1293 (void) zfs_error(hdl
, EZFS_BADPROP
, errbuf
);
1295 (void) zfs_standard_error(hdl
, err
, errbuf
);
1301 * This platform can't address a volume this big.
1304 if (prop
== ZFS_PROP_VOLSIZE
) {
1305 (void) zfs_error(hdl
, EZFS_VOLTOOBIG
, errbuf
);
1311 (void) zfs_standard_error(hdl
, err
, errbuf
);
1316 * Given a property name and value, set the property for the given dataset.
1319 zfs_prop_set(zfs_handle_t
*zhp
, const char *propname
, const char *propval
)
1321 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
1323 prop_changelist_t
*cl
= NULL
;
1325 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
1326 nvlist_t
*nvl
= NULL
, *realprops
;
1328 boolean_t do_prefix
;
1332 (void) snprintf(errbuf
, sizeof (errbuf
),
1333 dgettext(TEXT_DOMAIN
, "cannot set property for '%s'"),
1336 if (nvlist_alloc(&nvl
, NV_UNIQUE_NAME
, 0) != 0 ||
1337 nvlist_add_string(nvl
, propname
, propval
) != 0) {
1338 (void) no_memory(hdl
);
1342 if ((realprops
= zfs_valid_proplist(hdl
, zhp
->zfs_type
, nvl
,
1343 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
), zhp
, errbuf
)) == NULL
)
1349 prop
= zfs_name_to_prop(propname
);
1351 if (prop
== ZFS_PROP_VOLSIZE
) {
1352 if ((added_resv
= zfs_add_synthetic_resv(zhp
, nvl
)) == -1)
1356 if ((cl
= changelist_gather(zhp
, prop
, 0, 0)) == NULL
)
1359 if (prop
== ZFS_PROP_MOUNTPOINT
&& changelist_haszonedchild(cl
)) {
1360 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1361 "child dataset with inherited mountpoint is used "
1362 "in a non-global zone"));
1363 ret
= zfs_error(hdl
, EZFS_ZONED
, errbuf
);
1368 * If the dataset's canmount property is being set to noauto,
1369 * then we want to prevent unmounting & remounting it.
1371 do_prefix
= !((prop
== ZFS_PROP_CANMOUNT
) &&
1372 (zprop_string_to_index(prop
, propval
, &idx
,
1373 ZFS_TYPE_DATASET
) == 0) && (idx
== ZFS_CANMOUNT_NOAUTO
));
1375 if (do_prefix
&& (ret
= changelist_prefix(cl
)) != 0)
1379 * Execute the corresponding ioctl() to set this property.
1381 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1383 if (zcmd_write_src_nvlist(hdl
, &zc
, nvl
) != 0)
1386 ret
= zfs_ioctl(hdl
, ZFS_IOC_SET_PROP
, &zc
);
1389 zfs_setprop_error(hdl
, prop
, errno
, errbuf
);
1390 if (added_resv
&& errno
== ENOSPC
) {
1391 /* clean up the volsize property we tried to set */
1392 uint64_t old_volsize
= zfs_prop_get_int(zhp
,
1395 zcmd_free_nvlists(&zc
);
1396 if (nvlist_alloc(&nvl
, NV_UNIQUE_NAME
, 0) != 0)
1398 if (nvlist_add_uint64(nvl
,
1399 zfs_prop_to_name(ZFS_PROP_VOLSIZE
),
1402 if (zcmd_write_src_nvlist(hdl
, &zc
, nvl
) != 0)
1404 (void) zfs_ioctl(hdl
, ZFS_IOC_SET_PROP
, &zc
);
1408 ret
= changelist_postfix(cl
);
1411 * Refresh the statistics so the new property value
1415 (void) get_stats(zhp
);
1420 zcmd_free_nvlists(&zc
);
1422 changelist_free(cl
);
1427 * Given a property, inherit the value from the parent dataset, or if received
1428 * is TRUE, revert to the received value, if any.
1431 zfs_prop_inherit(zfs_handle_t
*zhp
, const char *propname
, boolean_t received
)
1433 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
1435 prop_changelist_t
*cl
;
1436 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
1440 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
1441 "cannot inherit %s for '%s'"), propname
, zhp
->zfs_name
);
1443 zc
.zc_cookie
= received
;
1444 if ((prop
= zfs_name_to_prop(propname
)) == ZPROP_INVAL
) {
1446 * For user properties, the amount of work we have to do is very
1447 * small, so just do it here.
1449 if (!zfs_prop_user(propname
)) {
1450 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1451 "invalid property"));
1452 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
1455 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1456 (void) strlcpy(zc
.zc_value
, propname
, sizeof (zc
.zc_value
));
1458 if (zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_INHERIT_PROP
, &zc
) != 0)
1459 return (zfs_standard_error(hdl
, errno
, errbuf
));
1465 * Verify that this property is inheritable.
1467 if (zfs_prop_readonly(prop
))
1468 return (zfs_error(hdl
, EZFS_PROPREADONLY
, errbuf
));
1470 if (!zfs_prop_inheritable(prop
) && !received
)
1471 return (zfs_error(hdl
, EZFS_PROPNONINHERIT
, errbuf
));
1474 * Check to see if the value applies to this type
1476 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_type
))
1477 return (zfs_error(hdl
, EZFS_PROPTYPE
, errbuf
));
1480 * Normalize the name, to get rid of shorthand abbreviations.
1482 propname
= zfs_prop_to_name(prop
);
1483 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1484 (void) strlcpy(zc
.zc_value
, propname
, sizeof (zc
.zc_value
));
1486 if (prop
== ZFS_PROP_MOUNTPOINT
&& getzoneid() == GLOBAL_ZONEID
&&
1487 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
)) {
1488 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1489 "dataset is used in a non-global zone"));
1490 return (zfs_error(hdl
, EZFS_ZONED
, errbuf
));
1494 * Determine datasets which will be affected by this change, if any.
1496 if ((cl
= changelist_gather(zhp
, prop
, 0, 0)) == NULL
)
1499 if (prop
== ZFS_PROP_MOUNTPOINT
&& changelist_haszonedchild(cl
)) {
1500 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
1501 "child dataset with inherited mountpoint is used "
1502 "in a non-global zone"));
1503 ret
= zfs_error(hdl
, EZFS_ZONED
, errbuf
);
1507 if ((ret
= changelist_prefix(cl
)) != 0)
1510 if ((ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_INHERIT_PROP
, &zc
)) != 0) {
1511 return (zfs_standard_error(hdl
, errno
, errbuf
));
1514 if ((ret
= changelist_postfix(cl
)) != 0)
1518 * Refresh the statistics so the new property is reflected.
1520 (void) get_stats(zhp
);
1524 changelist_free(cl
);
1529 * True DSL properties are stored in an nvlist. The following two functions
1530 * extract them appropriately.
1533 getprop_uint64(zfs_handle_t
*zhp
, zfs_prop_t prop
, char **source
)
1539 if (nvlist_lookup_nvlist(zhp
->zfs_props
,
1540 zfs_prop_to_name(prop
), &nv
) == 0) {
1541 verify(nvlist_lookup_uint64(nv
, ZPROP_VALUE
, &value
) == 0);
1542 (void) nvlist_lookup_string(nv
, ZPROP_SOURCE
, source
);
1544 verify(!zhp
->zfs_props_table
||
1545 zhp
->zfs_props_table
[prop
] == B_TRUE
);
1546 value
= zfs_prop_default_numeric(prop
);
1554 getprop_string(zfs_handle_t
*zhp
, zfs_prop_t prop
, char **source
)
1560 if (nvlist_lookup_nvlist(zhp
->zfs_props
,
1561 zfs_prop_to_name(prop
), &nv
) == 0) {
1562 verify(nvlist_lookup_string(nv
, ZPROP_VALUE
, &value
) == 0);
1563 (void) nvlist_lookup_string(nv
, ZPROP_SOURCE
, source
);
1565 verify(!zhp
->zfs_props_table
||
1566 zhp
->zfs_props_table
[prop
] == B_TRUE
);
1567 if ((value
= (char *)zfs_prop_default_string(prop
)) == NULL
)
1576 zfs_is_recvd_props_mode(zfs_handle_t
*zhp
)
1578 return (zhp
->zfs_props
== zhp
->zfs_recvd_props
);
1582 zfs_set_recvd_props_mode(zfs_handle_t
*zhp
, uint64_t *cookie
)
1584 *cookie
= (uint64_t)(uintptr_t)zhp
->zfs_props
;
1585 zhp
->zfs_props
= zhp
->zfs_recvd_props
;
1589 zfs_unset_recvd_props_mode(zfs_handle_t
*zhp
, uint64_t *cookie
)
1591 zhp
->zfs_props
= (nvlist_t
*)(uintptr_t)*cookie
;
1596 * Internal function for getting a numeric property. Both zfs_prop_get() and
1597 * zfs_prop_get_int() are built using this interface.
1599 * Certain properties can be overridden using 'mount -o'. In this case, scan
1600 * the contents of the /etc/mnttab entry, searching for the appropriate options.
1601 * If they differ from the on-disk values, report the current values and mark
1602 * the source "temporary".
1605 get_numeric_property(zfs_handle_t
*zhp
, zfs_prop_t prop
, zprop_source_t
*src
,
1606 char **source
, uint64_t *val
)
1608 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
1609 nvlist_t
*zplprops
= NULL
;
1611 char *mntopt_on
= NULL
;
1612 char *mntopt_off
= NULL
;
1613 boolean_t received
= zfs_is_recvd_props_mode(zhp
);
1618 case ZFS_PROP_ATIME
:
1619 mntopt_on
= MNTOPT_ATIME
;
1620 mntopt_off
= MNTOPT_NOATIME
;
1623 case ZFS_PROP_DEVICES
:
1624 mntopt_on
= MNTOPT_DEVICES
;
1625 mntopt_off
= MNTOPT_NODEVICES
;
1629 mntopt_on
= MNTOPT_EXEC
;
1630 mntopt_off
= MNTOPT_NOEXEC
;
1633 case ZFS_PROP_READONLY
:
1634 mntopt_on
= MNTOPT_RO
;
1635 mntopt_off
= MNTOPT_RW
;
1638 case ZFS_PROP_SETUID
:
1639 mntopt_on
= MNTOPT_SETUID
;
1640 mntopt_off
= MNTOPT_NOSETUID
;
1643 case ZFS_PROP_XATTR
:
1644 mntopt_on
= MNTOPT_XATTR
;
1645 mntopt_off
= MNTOPT_NOXATTR
;
1648 case ZFS_PROP_NBMAND
:
1649 mntopt_on
= MNTOPT_NBMAND
;
1650 mntopt_off
= MNTOPT_NONBMAND
;
1657 * Because looking up the mount options is potentially expensive
1658 * (iterating over all of /etc/mnttab), we defer its calculation until
1659 * we're looking up a property which requires its presence.
1661 if (!zhp
->zfs_mntcheck
&&
1662 (mntopt_on
!= NULL
|| prop
== ZFS_PROP_MOUNTED
)) {
1663 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
1664 struct mnttab entry
;
1666 if (libzfs_mnttab_find(hdl
, zhp
->zfs_name
, &entry
) == 0) {
1667 zhp
->zfs_mntopts
= zfs_strdup(hdl
,
1669 if (zhp
->zfs_mntopts
== NULL
)
1673 zhp
->zfs_mntcheck
= B_TRUE
;
1676 if (zhp
->zfs_mntopts
== NULL
)
1677 mnt
.mnt_mntopts
= "";
1679 mnt
.mnt_mntopts
= zhp
->zfs_mntopts
;
1682 case ZFS_PROP_ATIME
:
1683 case ZFS_PROP_DEVICES
:
1685 case ZFS_PROP_READONLY
:
1686 case ZFS_PROP_SETUID
:
1687 case ZFS_PROP_XATTR
:
1688 case ZFS_PROP_NBMAND
:
1689 *val
= getprop_uint64(zhp
, prop
, source
);
1694 if (hasmntopt(&mnt
, mntopt_on
) && !*val
) {
1697 *src
= ZPROP_SRC_TEMPORARY
;
1698 } else if (hasmntopt(&mnt
, mntopt_off
) && *val
) {
1701 *src
= ZPROP_SRC_TEMPORARY
;
1705 case ZFS_PROP_CANMOUNT
:
1706 case ZFS_PROP_VOLSIZE
:
1707 case ZFS_PROP_QUOTA
:
1708 case ZFS_PROP_REFQUOTA
:
1709 case ZFS_PROP_RESERVATION
:
1710 case ZFS_PROP_REFRESERVATION
:
1711 *val
= getprop_uint64(zhp
, prop
, source
);
1713 if (*source
== NULL
) {
1714 /* not default, must be local */
1715 *source
= zhp
->zfs_name
;
1719 case ZFS_PROP_MOUNTED
:
1720 *val
= (zhp
->zfs_mntopts
!= NULL
);
1723 case ZFS_PROP_NUMCLONES
:
1724 *val
= zhp
->zfs_dmustats
.dds_num_clones
;
1727 case ZFS_PROP_VERSION
:
1728 case ZFS_PROP_NORMALIZE
:
1729 case ZFS_PROP_UTF8ONLY
:
1731 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_head_type
) ||
1732 zcmd_alloc_dst_nvlist(zhp
->zfs_hdl
, &zc
, 0) != 0)
1734 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
1735 if (zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_OBJSET_ZPLPROPS
, &zc
)) {
1736 zcmd_free_nvlists(&zc
);
1739 if (zcmd_read_dst_nvlist(zhp
->zfs_hdl
, &zc
, &zplprops
) != 0 ||
1740 nvlist_lookup_uint64(zplprops
, zfs_prop_to_name(prop
),
1742 zcmd_free_nvlists(&zc
);
1746 nvlist_free(zplprops
);
1747 zcmd_free_nvlists(&zc
);
1751 switch (zfs_prop_get_type(prop
)) {
1752 case PROP_TYPE_NUMBER
:
1753 case PROP_TYPE_INDEX
:
1754 *val
= getprop_uint64(zhp
, prop
, source
);
1756 * If we tried to use a default value for a
1757 * readonly property, it means that it was not
1760 if (zfs_prop_readonly(prop
) &&
1761 *source
!= NULL
&& (*source
)[0] == '\0') {
1766 case PROP_TYPE_STRING
:
1768 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
1769 "cannot get non-numeric property"));
1770 return (zfs_error(zhp
->zfs_hdl
, EZFS_BADPROP
,
1771 dgettext(TEXT_DOMAIN
, "internal error")));
1779 * Calculate the source type, given the raw source string.
1782 get_source(zfs_handle_t
*zhp
, zprop_source_t
*srctype
, char *source
,
1783 char *statbuf
, size_t statlen
)
1785 if (statbuf
== NULL
|| *srctype
== ZPROP_SRC_TEMPORARY
)
1788 if (source
== NULL
) {
1789 *srctype
= ZPROP_SRC_NONE
;
1790 } else if (source
[0] == '\0') {
1791 *srctype
= ZPROP_SRC_DEFAULT
;
1792 } else if (strstr(source
, ZPROP_SOURCE_VAL_RECVD
) != NULL
) {
1793 *srctype
= ZPROP_SRC_RECEIVED
;
1795 if (strcmp(source
, zhp
->zfs_name
) == 0) {
1796 *srctype
= ZPROP_SRC_LOCAL
;
1798 (void) strlcpy(statbuf
, source
, statlen
);
1799 *srctype
= ZPROP_SRC_INHERITED
;
1806 zfs_prop_get_recvd(zfs_handle_t
*zhp
, const char *propname
, char *propbuf
,
1807 size_t proplen
, boolean_t literal
)
1812 if (zhp
->zfs_recvd_props
== NULL
)
1813 if (get_recvd_props_ioctl(zhp
) != 0)
1816 prop
= zfs_name_to_prop(propname
);
1818 if (prop
!= ZPROP_INVAL
) {
1820 if (!nvlist_exists(zhp
->zfs_recvd_props
, propname
))
1822 zfs_set_recvd_props_mode(zhp
, &cookie
);
1823 err
= zfs_prop_get(zhp
, prop
, propbuf
, proplen
,
1824 NULL
, NULL
, 0, literal
);
1825 zfs_unset_recvd_props_mode(zhp
, &cookie
);
1826 } else if (zfs_prop_userquota(propname
)) {
1831 if (nvlist_lookup_nvlist(zhp
->zfs_recvd_props
,
1832 propname
, &propval
) != 0)
1834 verify(nvlist_lookup_string(propval
, ZPROP_VALUE
,
1836 (void) strlcpy(propbuf
, recvdval
, proplen
);
1839 return (err
== 0 ? 0 : -1);
1843 * Retrieve a property from the given object. If 'literal' is specified, then
1844 * numbers are left as exact values. Otherwise, numbers are converted to a
1845 * human-readable form.
1847 * Returns 0 on success, or -1 on error.
1850 zfs_prop_get(zfs_handle_t
*zhp
, zfs_prop_t prop
, char *propbuf
, size_t proplen
,
1851 zprop_source_t
*src
, char *statbuf
, size_t statlen
, boolean_t literal
)
1853 char *source
= NULL
;
1857 boolean_t received
= zfs_is_recvd_props_mode(zhp
);
1860 * Check to see if this property applies to our object
1862 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_type
))
1865 if (received
&& zfs_prop_readonly(prop
))
1869 *src
= ZPROP_SRC_NONE
;
1872 case ZFS_PROP_CREATION
:
1874 * 'creation' is a time_t stored in the statistics. We convert
1875 * this into a string unless 'literal' is specified.
1878 val
= getprop_uint64(zhp
, prop
, &source
);
1879 time_t time
= (time_t)val
;
1883 localtime_r(&time
, &t
) == NULL
||
1884 strftime(propbuf
, proplen
, "%a %b %e %k:%M %Y",
1886 (void) snprintf(propbuf
, proplen
, "%llu", (u_longlong_t
) val
);
1890 case ZFS_PROP_MOUNTPOINT
:
1892 * Getting the precise mountpoint can be tricky.
1894 * - for 'none' or 'legacy', return those values.
1895 * - for inherited mountpoints, we want to take everything
1896 * after our ancestor and append it to the inherited value.
1898 * If the pool has an alternate root, we want to prepend that
1899 * root to any values we return.
1902 str
= getprop_string(zhp
, prop
, &source
);
1904 if (str
[0] == '/') {
1905 char buf
[MAXPATHLEN
];
1907 const char *relpath
;
1910 * If we inherit the mountpoint, even from a dataset
1911 * with a received value, the source will be the path of
1912 * the dataset we inherit from. If source is
1913 * ZPROP_SOURCE_VAL_RECVD, the received value is not
1916 if (strcmp(source
, ZPROP_SOURCE_VAL_RECVD
) == 0) {
1919 relpath
= zhp
->zfs_name
+ strlen(source
);
1920 if (relpath
[0] == '/')
1924 if ((zpool_get_prop(zhp
->zpool_hdl
,
1925 ZPOOL_PROP_ALTROOT
, buf
, MAXPATHLEN
, NULL
)) ||
1926 (strcmp(root
, "-") == 0))
1929 * Special case an alternate root of '/'. This will
1930 * avoid having multiple leading slashes in the
1933 if (strcmp(root
, "/") == 0)
1937 * If the mountpoint is '/' then skip over this
1938 * if we are obtaining either an alternate root or
1939 * an inherited mountpoint.
1941 if (str
[1] == '\0' && (root
[0] != '\0' ||
1942 relpath
[0] != '\0'))
1945 if (relpath
[0] == '\0')
1946 (void) snprintf(propbuf
, proplen
, "%s%s",
1949 (void) snprintf(propbuf
, proplen
, "%s%s%s%s",
1950 root
, str
, relpath
[0] == '@' ? "" : "/",
1953 /* 'legacy' or 'none' */
1954 (void) strlcpy(propbuf
, str
, proplen
);
1959 case ZFS_PROP_ORIGIN
:
1960 (void) strlcpy(propbuf
, getprop_string(zhp
, prop
, &source
),
1963 * If there is no parent at all, return failure to indicate that
1964 * it doesn't apply to this dataset.
1966 if (propbuf
[0] == '\0')
1970 case ZFS_PROP_QUOTA
:
1971 case ZFS_PROP_REFQUOTA
:
1972 case ZFS_PROP_RESERVATION
:
1973 case ZFS_PROP_REFRESERVATION
:
1975 if (get_numeric_property(zhp
, prop
, src
, &source
, &val
) != 0)
1979 * If quota or reservation is 0, we translate this into 'none'
1980 * (unless literal is set), and indicate that it's the default
1981 * value. Otherwise, we print the number nicely and indicate
1982 * that its set locally.
1986 (void) strlcpy(propbuf
, "0", proplen
);
1988 (void) strlcpy(propbuf
, "none", proplen
);
1991 (void) snprintf(propbuf
, proplen
, "%llu",
1994 zfs_nicenum(val
, propbuf
, proplen
);
1998 case ZFS_PROP_COMPRESSRATIO
:
1999 if (get_numeric_property(zhp
, prop
, src
, &source
, &val
) != 0)
2001 (void) snprintf(propbuf
, proplen
, "%llu.%02llux",
2002 (u_longlong_t
)(val
/ 100),
2003 (u_longlong_t
)(val
% 100));
2007 switch (zhp
->zfs_type
) {
2008 case ZFS_TYPE_FILESYSTEM
:
2011 case ZFS_TYPE_VOLUME
:
2014 case ZFS_TYPE_SNAPSHOT
:
2020 (void) snprintf(propbuf
, proplen
, "%s", str
);
2023 case ZFS_PROP_MOUNTED
:
2025 * The 'mounted' property is a pseudo-property that described
2026 * whether the filesystem is currently mounted. Even though
2027 * it's a boolean value, the typical values of "on" and "off"
2028 * don't make sense, so we translate to "yes" and "no".
2030 if (get_numeric_property(zhp
, ZFS_PROP_MOUNTED
,
2031 src
, &source
, &val
) != 0)
2034 (void) strlcpy(propbuf
, "yes", proplen
);
2036 (void) strlcpy(propbuf
, "no", proplen
);
2041 * The 'name' property is a pseudo-property derived from the
2042 * dataset name. It is presented as a real property to simplify
2045 (void) strlcpy(propbuf
, zhp
->zfs_name
, proplen
);
2048 case ZFS_PROP_MLSLABEL
:
2050 #ifdef HAVE_MLSLABEL
2051 m_label_t
*new_sl
= NULL
;
2052 char *ascii
= NULL
; /* human readable label */
2054 (void) strlcpy(propbuf
,
2055 getprop_string(zhp
, prop
, &source
), proplen
);
2057 if (literal
|| (strcasecmp(propbuf
,
2058 ZFS_MLSLABEL_DEFAULT
) == 0))
2062 * Try to translate the internal hex string to
2063 * human-readable output. If there are any
2064 * problems just use the hex string.
2067 if (str_to_label(propbuf
, &new_sl
, MAC_LABEL
,
2068 L_NO_CORRECTION
, NULL
) == -1) {
2069 m_label_free(new_sl
);
2073 if (label_to_str(new_sl
, &ascii
, M_LABEL
,
2077 m_label_free(new_sl
);
2080 m_label_free(new_sl
);
2082 (void) strlcpy(propbuf
, ascii
, proplen
);
2085 (void) strlcpy(propbuf
,
2086 getprop_string(zhp
, prop
, &source
), proplen
);
2087 #endif /* HAVE_MLSLABEL */
2092 switch (zfs_prop_get_type(prop
)) {
2093 case PROP_TYPE_NUMBER
:
2094 if (get_numeric_property(zhp
, prop
, src
,
2095 &source
, &val
) != 0)
2098 (void) snprintf(propbuf
, proplen
, "%llu",
2101 zfs_nicenum(val
, propbuf
, proplen
);
2104 case PROP_TYPE_STRING
:
2105 (void) strlcpy(propbuf
,
2106 getprop_string(zhp
, prop
, &source
), proplen
);
2109 case PROP_TYPE_INDEX
:
2110 if (get_numeric_property(zhp
, prop
, src
,
2111 &source
, &val
) != 0)
2113 if (zfs_prop_index_to_string(prop
, val
, &strval
) != 0)
2115 (void) strlcpy(propbuf
, strval
, proplen
);
2123 get_source(zhp
, src
, source
, statbuf
, statlen
);
2129 * Utility function to get the given numeric property. Does no validation that
2130 * the given property is the appropriate type; should only be used with
2131 * hard-coded property types.
2134 zfs_prop_get_int(zfs_handle_t
*zhp
, zfs_prop_t prop
)
2139 (void) get_numeric_property(zhp
, prop
, NULL
, &source
, &val
);
2145 zfs_prop_set_int(zfs_handle_t
*zhp
, zfs_prop_t prop
, uint64_t val
)
2149 (void) snprintf(buf
, sizeof (buf
), "%llu", (longlong_t
)val
);
2150 return (zfs_prop_set(zhp
, zfs_prop_to_name(prop
), buf
));
2154 * Similar to zfs_prop_get(), but returns the value as an integer.
2157 zfs_prop_get_numeric(zfs_handle_t
*zhp
, zfs_prop_t prop
, uint64_t *value
,
2158 zprop_source_t
*src
, char *statbuf
, size_t statlen
)
2163 * Check to see if this property applies to our object
2165 if (!zfs_prop_valid_for_type(prop
, zhp
->zfs_type
)) {
2166 return (zfs_error_fmt(zhp
->zfs_hdl
, EZFS_PROPTYPE
,
2167 dgettext(TEXT_DOMAIN
, "cannot get property '%s'"),
2168 zfs_prop_to_name(prop
)));
2172 *src
= ZPROP_SRC_NONE
;
2174 if (get_numeric_property(zhp
, prop
, src
, &source
, value
) != 0)
2177 get_source(zhp
, src
, source
, statbuf
, statlen
);
2184 idmap_id_to_numeric_domain_rid(uid_t id
, boolean_t isuser
,
2185 char **domainp
, idmap_rid_t
*ridp
)
2187 idmap_get_handle_t
*get_hdl
= NULL
;
2191 if (idmap_get_create(&get_hdl
) != IDMAP_SUCCESS
)
2195 err
= idmap_get_sidbyuid(get_hdl
, id
,
2196 IDMAP_REQ_FLG_USE_CACHE
, domainp
, ridp
, &status
);
2198 err
= idmap_get_sidbygid(get_hdl
, id
,
2199 IDMAP_REQ_FLG_USE_CACHE
, domainp
, ridp
, &status
);
2201 if (err
== IDMAP_SUCCESS
&&
2202 idmap_get_mappings(get_hdl
) == IDMAP_SUCCESS
&&
2203 status
== IDMAP_SUCCESS
)
2209 idmap_get_destroy(get_hdl
);
2212 #endif /* HAVE_IDMAP */
2215 * convert the propname into parameters needed by kernel
2216 * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829
2217 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789
2220 userquota_propname_decode(const char *propname
, boolean_t zoned
,
2221 zfs_userquota_prop_t
*typep
, char *domain
, int domainlen
, uint64_t *ridp
)
2223 zfs_userquota_prop_t type
;
2225 char *numericsid
= NULL
;
2230 /* Figure out the property type ({user|group}{quota|space}) */
2231 for (type
= 0; type
< ZFS_NUM_USERQUOTA_PROPS
; type
++) {
2232 if (strncmp(propname
, zfs_userquota_prop_prefixes
[type
],
2233 strlen(zfs_userquota_prop_prefixes
[type
])) == 0)
2236 if (type
== ZFS_NUM_USERQUOTA_PROPS
)
2240 isuser
= (type
== ZFS_PROP_USERQUOTA
||
2241 type
== ZFS_PROP_USERUSED
);
2243 cp
= strchr(propname
, '@') + 1;
2245 if (strchr(cp
, '@')) {
2248 * It's a SID name (eg "user@domain") that needs to be
2249 * turned into S-1-domainID-RID.
2251 directory_error_t e
;
2252 if (zoned
&& getzoneid() == GLOBAL_ZONEID
)
2255 e
= directory_sid_from_user_name(NULL
,
2258 e
= directory_sid_from_group_name(NULL
,
2262 directory_error_free(e
);
2265 if (numericsid
== NULL
)
2268 /* will be further decoded below */
2271 #endif /* HAVE_IDMAP */
2274 if (strncmp(cp
, "S-1-", 4) == 0) {
2275 /* It's a numeric SID (eg "S-1-234-567-89") */
2276 (void) strlcpy(domain
, cp
, domainlen
);
2277 cp
= strrchr(domain
, '-');
2282 *ridp
= strtoull(cp
, &end
, 10);
2287 if (errno
!= 0 || *end
!= '\0')
2289 } else if (!isdigit(*cp
)) {
2291 * It's a user/group name (eg "user") that needs to be
2292 * turned into a uid/gid
2294 if (zoned
&& getzoneid() == GLOBAL_ZONEID
)
2311 /* It's a user/group ID (eg "12345"). */
2312 uid_t id
= strtoul(cp
, &end
, 10);
2319 /* It's an ephemeral ID. */
2320 if (idmap_id_to_numeric_domain_rid(id
, isuser
,
2321 &mapdomain
, &rid
) != 0)
2323 (void) strlcpy(domain
, mapdomain
, domainlen
);
2330 #endif /* HAVE_IDMAP */
2333 ASSERT3P(numericsid
, ==, NULL
);
2338 zfs_prop_get_userquota_common(zfs_handle_t
*zhp
, const char *propname
,
2339 uint64_t *propvalue
, zfs_userquota_prop_t
*typep
)
2342 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2344 (void) strncpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
2346 err
= userquota_propname_decode(propname
,
2347 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
),
2348 typep
, zc
.zc_value
, sizeof (zc
.zc_value
), &zc
.zc_guid
);
2349 zc
.zc_objset_type
= *typep
;
2353 err
= ioctl(zhp
->zfs_hdl
->libzfs_fd
, ZFS_IOC_USERSPACE_ONE
, &zc
);
2357 *propvalue
= zc
.zc_cookie
;
2362 zfs_prop_get_userquota_int(zfs_handle_t
*zhp
, const char *propname
,
2363 uint64_t *propvalue
)
2365 zfs_userquota_prop_t type
;
2367 return (zfs_prop_get_userquota_common(zhp
, propname
, propvalue
,
2372 zfs_prop_get_userquota(zfs_handle_t
*zhp
, const char *propname
,
2373 char *propbuf
, int proplen
, boolean_t literal
)
2377 zfs_userquota_prop_t type
;
2379 err
= zfs_prop_get_userquota_common(zhp
, propname
, &propvalue
,
2386 (void) snprintf(propbuf
, proplen
, "%llu",
2387 (u_longlong_t
)propvalue
);
2388 } else if (propvalue
== 0 &&
2389 (type
== ZFS_PROP_USERQUOTA
|| type
== ZFS_PROP_GROUPQUOTA
)) {
2390 (void) strlcpy(propbuf
, "none", proplen
);
2392 zfs_nicenum(propvalue
, propbuf
, proplen
);
2398 * Returns the name of the given zfs handle.
2401 zfs_get_name(const zfs_handle_t
*zhp
)
2403 return (zhp
->zfs_name
);
2407 * Returns the type of the given zfs handle.
2410 zfs_get_type(const zfs_handle_t
*zhp
)
2412 return (zhp
->zfs_type
);
2416 zfs_do_list_ioctl(zfs_handle_t
*zhp
, int arg
, zfs_cmd_t
*zc
)
2419 uint64_t orig_cookie
;
2421 orig_cookie
= zc
->zc_cookie
;
2423 (void) strlcpy(zc
->zc_name
, zhp
->zfs_name
, sizeof (zc
->zc_name
));
2424 rc
= ioctl(zhp
->zfs_hdl
->libzfs_fd
, arg
, zc
);
2429 /* expand nvlist memory and try again */
2430 if (zcmd_expand_dst_nvlist(zhp
->zfs_hdl
, zc
) != 0) {
2431 zcmd_free_nvlists(zc
);
2434 zc
->zc_cookie
= orig_cookie
;
2437 * An errno value of ESRCH indicates normal completion.
2438 * If ENOENT is returned, then the underlying dataset
2439 * has been removed since we obtained the handle.
2446 rc
= zfs_standard_error(zhp
->zfs_hdl
, errno
,
2447 dgettext(TEXT_DOMAIN
,
2448 "cannot iterate filesystems"));
2456 * Iterate over all child filesystems
2459 zfs_iter_filesystems(zfs_handle_t
*zhp
, zfs_iter_f func
, void *data
)
2461 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2465 if (zhp
->zfs_type
!= ZFS_TYPE_FILESYSTEM
)
2468 if (zcmd_alloc_dst_nvlist(zhp
->zfs_hdl
, &zc
, 0) != 0)
2471 while ((ret
= zfs_do_list_ioctl(zhp
, ZFS_IOC_DATASET_LIST_NEXT
,
2474 * Silently ignore errors, as the only plausible explanation is
2475 * that the pool has since been removed.
2477 if ((nzhp
= make_dataset_handle_zc(zhp
->zfs_hdl
,
2482 if ((ret
= func(nzhp
, data
)) != 0) {
2483 zcmd_free_nvlists(&zc
);
2487 zcmd_free_nvlists(&zc
);
2488 return ((ret
< 0) ? ret
: 0);
2492 * Iterate over all snapshots
2495 zfs_iter_snapshots(zfs_handle_t
*zhp
, zfs_iter_f func
, void *data
)
2497 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2501 if (zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
)
2504 if (zcmd_alloc_dst_nvlist(zhp
->zfs_hdl
, &zc
, 0) != 0)
2506 while ((ret
= zfs_do_list_ioctl(zhp
, ZFS_IOC_SNAPSHOT_LIST_NEXT
,
2509 if ((nzhp
= make_dataset_handle_zc(zhp
->zfs_hdl
,
2514 if ((ret
= func(nzhp
, data
)) != 0) {
2515 zcmd_free_nvlists(&zc
);
2519 zcmd_free_nvlists(&zc
);
2520 return ((ret
< 0) ? ret
: 0);
2524 * Iterate over all children, snapshots and filesystems
2527 zfs_iter_children(zfs_handle_t
*zhp
, zfs_iter_f func
, void *data
)
2531 if ((ret
= zfs_iter_filesystems(zhp
, func
, data
)) != 0)
2534 return (zfs_iter_snapshots(zhp
, func
, data
));
2538 * Is one dataset name a child dataset of another?
2540 * Needs to handle these cases:
2541 * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo"
2542 * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar"
2543 * Descendant? No. No. No. Yes.
2546 is_descendant(const char *ds1
, const char *ds2
)
2548 size_t d1len
= strlen(ds1
);
2550 /* ds2 can't be a descendant if it's smaller */
2551 if (strlen(ds2
) < d1len
)
2554 /* otherwise, compare strings and verify that there's a '/' char */
2555 return (ds2
[d1len
] == '/' && (strncmp(ds1
, ds2
, d1len
) == 0));
2559 * Given a complete name, return just the portion that refers to the parent.
2560 * Can return NULL if this is a pool.
2563 parent_name(const char *path
, char *buf
, size_t buflen
)
2567 if ((loc
= strrchr(path
, '/')) == NULL
)
2570 (void) strncpy(buf
, path
, MIN(buflen
, loc
- path
));
2571 buf
[loc
- path
] = '\0';
2577 * If accept_ancestor is false, then check to make sure that the given path has
2578 * a parent, and that it exists. If accept_ancestor is true, then find the
2579 * closest existing ancestor for the given path. In prefixlen return the
2580 * length of already existing prefix of the given path. We also fetch the
2581 * 'zoned' property, which is used to validate property settings when creating
2585 check_parents(libzfs_handle_t
*hdl
, const char *path
, uint64_t *zoned
,
2586 boolean_t accept_ancestor
, int *prefixlen
)
2588 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2589 char parent
[ZFS_MAXNAMELEN
];
2595 (void) snprintf(errbuf
, sizeof (errbuf
),
2596 dgettext(TEXT_DOMAIN
, "cannot create '%s'"), path
);
2598 /* get parent, and check to see if this is just a pool */
2599 if (parent_name(path
, parent
, sizeof (parent
)) != 0) {
2600 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2601 "missing dataset name"));
2602 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
2605 /* check to see if the pool exists */
2606 if ((slash
= strchr(parent
, '/')) == NULL
)
2607 slash
= parent
+ strlen(parent
);
2608 (void) strncpy(zc
.zc_name
, parent
, slash
- parent
);
2609 zc
.zc_name
[slash
- parent
] = '\0';
2610 if (ioctl(hdl
->libzfs_fd
, ZFS_IOC_OBJSET_STATS
, &zc
) != 0 &&
2612 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2613 "no such pool '%s'"), zc
.zc_name
);
2614 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2617 /* check to see if the parent dataset exists */
2618 while ((zhp
= make_dataset_handle(hdl
, parent
)) == NULL
) {
2619 if (errno
== ENOENT
&& accept_ancestor
) {
2621 * Go deeper to find an ancestor, give up on top level.
2623 if (parent_name(parent
, parent
, sizeof (parent
)) != 0) {
2624 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2625 "no such pool '%s'"), zc
.zc_name
);
2626 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2628 } else if (errno
== ENOENT
) {
2629 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2630 "parent does not exist"));
2631 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2633 return (zfs_standard_error(hdl
, errno
, errbuf
));
2636 is_zoned
= zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
);
2640 /* we are in a non-global zone, but parent is in the global zone */
2641 if (getzoneid() != GLOBAL_ZONEID
&& !is_zoned
) {
2642 (void) zfs_standard_error(hdl
, EPERM
, errbuf
);
2647 /* make sure parent is a filesystem */
2648 if (zfs_get_type(zhp
) != ZFS_TYPE_FILESYSTEM
) {
2649 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2650 "parent is not a filesystem"));
2651 (void) zfs_error(hdl
, EZFS_BADTYPE
, errbuf
);
2657 if (prefixlen
!= NULL
)
2658 *prefixlen
= strlen(parent
);
2663 * Finds whether the dataset of the given type(s) exists.
2666 zfs_dataset_exists(libzfs_handle_t
*hdl
, const char *path
, zfs_type_t types
)
2670 if (!zfs_validate_name(hdl
, path
, types
, B_FALSE
))
2674 * Try to get stats for the dataset, which will tell us if it exists.
2676 if ((zhp
= make_dataset_handle(hdl
, path
)) != NULL
) {
2677 int ds_type
= zhp
->zfs_type
;
2680 if (types
& ds_type
)
2687 * Given a path to 'target', create all the ancestors between
2688 * the prefixlen portion of the path, and the target itself.
2689 * Fail if the initial prefixlen-ancestor does not already exist.
2692 create_parents(libzfs_handle_t
*hdl
, char *target
, int prefixlen
)
2698 /* make sure prefix exists */
2699 cp
= target
+ prefixlen
;
2701 assert(strchr(cp
, '/') == NULL
);
2702 h
= zfs_open(hdl
, target
, ZFS_TYPE_FILESYSTEM
);
2705 h
= zfs_open(hdl
, target
, ZFS_TYPE_FILESYSTEM
);
2713 * Attempt to create, mount, and share any ancestor filesystems,
2714 * up to the prefixlen-long one.
2716 for (cp
= target
+ prefixlen
+ 1;
2717 (cp
= strchr(cp
, '/')); *cp
= '/', cp
++) {
2722 h
= make_dataset_handle(hdl
, target
);
2724 /* it already exists, nothing to do here */
2729 logstr
= hdl
->libzfs_log_str
;
2730 hdl
->libzfs_log_str
= NULL
;
2731 if (zfs_create(hdl
, target
, ZFS_TYPE_FILESYSTEM
,
2733 hdl
->libzfs_log_str
= logstr
;
2734 opname
= dgettext(TEXT_DOMAIN
, "create");
2738 hdl
->libzfs_log_str
= logstr
;
2739 h
= zfs_open(hdl
, target
, ZFS_TYPE_FILESYSTEM
);
2741 opname
= dgettext(TEXT_DOMAIN
, "open");
2745 if (zfs_mount(h
, NULL
, 0) != 0) {
2746 opname
= dgettext(TEXT_DOMAIN
, "mount");
2750 if (zfs_share(h
) != 0) {
2751 opname
= dgettext(TEXT_DOMAIN
, "share");
2761 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2762 "failed to %s ancestor '%s'"), opname
, target
);
2767 * Creates non-existing ancestors of the given path.
2770 zfs_create_ancestors(libzfs_handle_t
*hdl
, const char *path
)
2776 if (check_parents(hdl
, path
, NULL
, B_TRUE
, &prefix
) != 0)
2779 if ((path_copy
= strdup(path
)) != NULL
) {
2780 rc
= create_parents(hdl
, path_copy
, prefix
);
2783 if (path_copy
== NULL
|| rc
!= 0)
2790 * Create a new filesystem or volume.
2793 zfs_create(libzfs_handle_t
*hdl
, const char *path
, zfs_type_t type
,
2796 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2799 uint64_t blocksize
= zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE
);
2803 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
2804 "cannot create '%s'"), path
);
2806 /* validate the path, taking care to note the extended error message */
2807 if (!zfs_validate_name(hdl
, path
, type
, B_TRUE
))
2808 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
2810 /* validate parents exist */
2811 if (check_parents(hdl
, path
, &zoned
, B_FALSE
, NULL
) != 0)
2815 * The failure modes when creating a dataset of a different type over
2816 * one that already exists is a little strange. In particular, if you
2817 * try to create a dataset on top of an existing dataset, the ioctl()
2818 * will return ENOENT, not EEXIST. To prevent this from happening, we
2819 * first try to see if the dataset exists.
2821 (void) strlcpy(zc
.zc_name
, path
, sizeof (zc
.zc_name
));
2822 if (zfs_dataset_exists(hdl
, zc
.zc_name
, ZFS_TYPE_DATASET
)) {
2823 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2824 "dataset already exists"));
2825 return (zfs_error(hdl
, EZFS_EXISTS
, errbuf
));
2828 if (type
== ZFS_TYPE_VOLUME
)
2829 zc
.zc_objset_type
= DMU_OST_ZVOL
;
2831 zc
.zc_objset_type
= DMU_OST_ZFS
;
2833 if (props
&& (props
= zfs_valid_proplist(hdl
, type
, props
,
2834 zoned
, NULL
, errbuf
)) == 0)
2837 if (type
== ZFS_TYPE_VOLUME
) {
2839 * If we are creating a volume, the size and block size must
2840 * satisfy a few restraints. First, the blocksize must be a
2841 * valid block size between SPA_{MIN,MAX}BLOCKSIZE. Second, the
2842 * volsize must be a multiple of the block size, and cannot be
2845 if (props
== NULL
|| nvlist_lookup_uint64(props
,
2846 zfs_prop_to_name(ZFS_PROP_VOLSIZE
), &size
) != 0) {
2848 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2849 "missing volume size"));
2850 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
2853 if ((ret
= nvlist_lookup_uint64(props
,
2854 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE
),
2855 &blocksize
)) != 0) {
2856 if (ret
== ENOENT
) {
2857 blocksize
= zfs_prop_default_numeric(
2858 ZFS_PROP_VOLBLOCKSIZE
);
2861 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2862 "missing volume block size"));
2863 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
2869 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2870 "volume size cannot be zero"));
2871 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
2874 if (size
% blocksize
!= 0) {
2876 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2877 "volume size must be a multiple of volume block "
2879 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
2883 if (props
&& zcmd_write_src_nvlist(hdl
, &zc
, props
) != 0)
2887 /* create the dataset */
2888 ret
= zfs_ioctl(hdl
, ZFS_IOC_CREATE
, &zc
);
2890 zcmd_free_nvlists(&zc
);
2892 /* check for failure */
2894 char parent
[ZFS_MAXNAMELEN
];
2895 (void) parent_name(path
, parent
, sizeof (parent
));
2899 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2900 "no such parent '%s'"), parent
);
2901 return (zfs_error(hdl
, EZFS_NOENT
, errbuf
));
2904 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2905 "parent '%s' is not a filesystem"), parent
);
2906 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
2909 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2910 "volume block size must be power of 2 from "
2912 (uint_t
)SPA_MINBLOCKSIZE
,
2913 (uint_t
)SPA_MAXBLOCKSIZE
>> 10);
2915 return (zfs_error(hdl
, EZFS_BADPROP
, errbuf
));
2918 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
2919 "pool must be upgraded to set this "
2920 "property or value"));
2921 return (zfs_error(hdl
, EZFS_BADVERSION
, errbuf
));
2925 * This platform can't address a volume this big.
2927 if (type
== ZFS_TYPE_VOLUME
)
2928 return (zfs_error(hdl
, EZFS_VOLTOOBIG
,
2933 return (zfs_standard_error(hdl
, errno
, errbuf
));
2941 * Destroys the given dataset. The caller must make sure that the filesystem
2942 * isn't mounted, and that there are no active dependents.
2945 zfs_destroy(zfs_handle_t
*zhp
, boolean_t defer
)
2947 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
2949 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
2951 if (ZFS_IS_VOLUME(zhp
)) {
2952 zc
.zc_objset_type
= DMU_OST_ZVOL
;
2954 zc
.zc_objset_type
= DMU_OST_ZFS
;
2957 zc
.zc_defer_destroy
= defer
;
2958 if (zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_DESTROY
, &zc
) != 0) {
2959 return (zfs_standard_error_fmt(zhp
->zfs_hdl
, errno
,
2960 dgettext(TEXT_DOMAIN
, "cannot destroy '%s'"),
2964 remove_mountpoint(zhp
);
2969 struct destroydata
{
2976 zfs_check_snap_cb(zfs_handle_t
*zhp
, void *arg
)
2978 struct destroydata
*dd
= arg
;
2980 char name
[ZFS_MAXNAMELEN
];
2981 boolean_t closezhp
= dd
->closezhp
;
2984 (void) strlcpy(name
, zhp
->zfs_name
, sizeof (name
));
2985 (void) strlcat(name
, "@", sizeof (name
));
2986 (void) strlcat(name
, dd
->snapname
, sizeof (name
));
2988 szhp
= make_dataset_handle(zhp
->zfs_hdl
, name
);
2990 dd
->gotone
= B_TRUE
;
2994 dd
->closezhp
= B_TRUE
;
2996 rv
= zfs_iter_filesystems(zhp
, zfs_check_snap_cb
, arg
);
3003 * Destroys all snapshots with the given name in zhp & descendants.
3006 zfs_destroy_snaps(zfs_handle_t
*zhp
, char *snapname
, boolean_t defer
)
3008 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3010 struct destroydata dd
= { 0 };
3012 dd
.snapname
= snapname
;
3013 (void) zfs_check_snap_cb(zhp
, &dd
);
3016 return (zfs_standard_error_fmt(zhp
->zfs_hdl
, ENOENT
,
3017 dgettext(TEXT_DOMAIN
, "cannot destroy '%s@%s'"),
3018 zhp
->zfs_name
, snapname
));
3021 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3022 (void) strlcpy(zc
.zc_value
, snapname
, sizeof (zc
.zc_value
));
3023 zc
.zc_defer_destroy
= defer
;
3025 ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_DESTROY_SNAPS
, &zc
);
3029 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3030 "cannot destroy '%s@%s'"), zc
.zc_name
, snapname
);
3034 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
3035 "snapshot is cloned"));
3036 return (zfs_error(zhp
->zfs_hdl
, EZFS_EXISTS
, errbuf
));
3039 return (zfs_standard_error(zhp
->zfs_hdl
, errno
,
3048 * Clones the given dataset. The target must be of the same type as the source.
3051 zfs_clone(zfs_handle_t
*zhp
, const char *target
, nvlist_t
*props
)
3053 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3054 char parent
[ZFS_MAXNAMELEN
];
3057 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3061 assert(zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
);
3063 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3064 "cannot create '%s'"), target
);
3066 /* validate the target name */
3067 if (!zfs_validate_name(hdl
, target
, ZFS_TYPE_FILESYSTEM
, B_TRUE
))
3068 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3070 /* validate parents exist */
3071 if (check_parents(hdl
, target
, &zoned
, B_FALSE
, NULL
) != 0)
3074 (void) parent_name(target
, parent
, sizeof (parent
));
3077 if (ZFS_IS_VOLUME(zhp
)) {
3078 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3079 type
= ZFS_TYPE_VOLUME
;
3081 zc
.zc_objset_type
= DMU_OST_ZFS
;
3082 type
= ZFS_TYPE_FILESYSTEM
;
3086 if ((props
= zfs_valid_proplist(hdl
, type
, props
, zoned
,
3087 zhp
, errbuf
)) == NULL
)
3090 if (zcmd_write_src_nvlist(hdl
, &zc
, props
) != 0) {
3098 (void) strlcpy(zc
.zc_name
, target
, sizeof (zc
.zc_name
));
3099 (void) strlcpy(zc
.zc_value
, zhp
->zfs_name
, sizeof (zc
.zc_value
));
3100 ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_CREATE
, &zc
);
3102 zcmd_free_nvlists(&zc
);
3109 * The parent doesn't exist. We should have caught this
3110 * above, but there may a race condition that has since
3111 * destroyed the parent.
3113 * At this point, we don't know whether it's the source
3114 * that doesn't exist anymore, or whether the target
3115 * dataset doesn't exist.
3117 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
3118 "no such parent '%s'"), parent
);
3119 return (zfs_error(zhp
->zfs_hdl
, EZFS_NOENT
, errbuf
));
3122 zfs_error_aux(zhp
->zfs_hdl
, dgettext(TEXT_DOMAIN
,
3123 "source and target pools differ"));
3124 return (zfs_error(zhp
->zfs_hdl
, EZFS_CROSSTARGET
,
3128 return (zfs_standard_error(zhp
->zfs_hdl
, errno
,
3137 * Promotes the given clone fs to be the clone parent.
3140 zfs_promote(zfs_handle_t
*zhp
)
3142 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3143 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3144 char parent
[MAXPATHLEN
];
3148 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3149 "cannot promote '%s'"), zhp
->zfs_name
);
3151 if (zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
) {
3152 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3153 "snapshots can not be promoted"));
3154 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3157 (void) strlcpy(parent
, zhp
->zfs_dmustats
.dds_origin
, sizeof (parent
));
3158 if (parent
[0] == '\0') {
3159 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3160 "not a cloned filesystem"));
3161 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3164 (void) strlcpy(zc
.zc_value
, zhp
->zfs_dmustats
.dds_origin
,
3165 sizeof (zc
.zc_value
));
3166 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3167 ret
= zfs_ioctl(hdl
, ZFS_IOC_PROMOTE
, &zc
);
3170 int save_errno
= errno
;
3172 switch (save_errno
) {
3174 /* There is a conflicting snapshot name. */
3175 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3176 "conflicting snapshot '%s' from parent '%s'"),
3177 zc
.zc_string
, parent
);
3178 return (zfs_error(hdl
, EZFS_EXISTS
, errbuf
));
3181 return (zfs_standard_error(hdl
, save_errno
, errbuf
));
3188 * Takes a snapshot of the given dataset.
3191 zfs_snapshot(libzfs_handle_t
*hdl
, const char *path
, boolean_t recursive
,
3195 char parent
[ZFS_MAXNAMELEN
];
3197 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3201 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3202 "cannot snapshot '%s'"), path
);
3204 /* validate the target name */
3205 if (!zfs_validate_name(hdl
, path
, ZFS_TYPE_SNAPSHOT
, B_TRUE
))
3206 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3209 if ((props
= zfs_valid_proplist(hdl
, ZFS_TYPE_SNAPSHOT
,
3210 props
, B_FALSE
, NULL
, errbuf
)) == NULL
)
3213 if (zcmd_write_src_nvlist(hdl
, &zc
, props
) != 0) {
3221 /* make sure the parent exists and is of the appropriate type */
3222 delim
= strchr(path
, '@');
3223 (void) strncpy(parent
, path
, delim
- path
);
3224 parent
[delim
- path
] = '\0';
3226 if ((zhp
= zfs_open(hdl
, parent
, ZFS_TYPE_FILESYSTEM
|
3227 ZFS_TYPE_VOLUME
)) == NULL
) {
3228 zcmd_free_nvlists(&zc
);
3232 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3233 (void) strlcpy(zc
.zc_value
, delim
+1, sizeof (zc
.zc_value
));
3234 if (ZFS_IS_VOLUME(zhp
))
3235 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3237 zc
.zc_objset_type
= DMU_OST_ZFS
;
3238 zc
.zc_cookie
= recursive
;
3239 ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_SNAPSHOT
, &zc
);
3241 zcmd_free_nvlists(&zc
);
3244 * if it was recursive, the one that actually failed will be in
3248 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3249 "cannot create snapshot '%s@%s'"), zc
.zc_name
, zc
.zc_value
);
3250 (void) zfs_standard_error(hdl
, errno
, errbuf
);
3259 * Destroy any more recent snapshots. We invoke this callback on any dependents
3260 * of the snapshot first. If the 'cb_dependent' member is non-zero, then this
3261 * is a dependent and we should just destroy it without checking the transaction
3264 typedef struct rollback_data
{
3265 const char *cb_target
; /* the snapshot */
3266 uint64_t cb_create
; /* creation time reference */
3268 boolean_t cb_dependent
;
3273 rollback_destroy(zfs_handle_t
*zhp
, void *data
)
3275 rollback_data_t
*cbp
= data
;
3277 if (!cbp
->cb_dependent
) {
3278 if (strcmp(zhp
->zfs_name
, cbp
->cb_target
) != 0 &&
3279 zfs_get_type(zhp
) == ZFS_TYPE_SNAPSHOT
&&
3280 zfs_prop_get_int(zhp
, ZFS_PROP_CREATETXG
) >
3284 cbp
->cb_dependent
= B_TRUE
;
3285 cbp
->cb_error
|= zfs_iter_dependents(zhp
, B_FALSE
,
3286 rollback_destroy
, cbp
);
3287 cbp
->cb_dependent
= B_FALSE
;
3289 logstr
= zhp
->zfs_hdl
->libzfs_log_str
;
3290 zhp
->zfs_hdl
->libzfs_log_str
= NULL
;
3291 cbp
->cb_error
|= zfs_destroy(zhp
, B_FALSE
);
3292 zhp
->zfs_hdl
->libzfs_log_str
= logstr
;
3295 /* We must destroy this clone; first unmount it */
3296 prop_changelist_t
*clp
;
3298 clp
= changelist_gather(zhp
, ZFS_PROP_NAME
, 0,
3299 cbp
->cb_force
? MS_FORCE
: 0);
3300 if (clp
== NULL
|| changelist_prefix(clp
) != 0) {
3301 cbp
->cb_error
= B_TRUE
;
3305 if (zfs_destroy(zhp
, B_FALSE
) != 0)
3306 cbp
->cb_error
= B_TRUE
;
3308 changelist_remove(clp
, zhp
->zfs_name
);
3309 (void) changelist_postfix(clp
);
3310 changelist_free(clp
);
3318 * Given a dataset, rollback to a specific snapshot, discarding any
3319 * data changes since then and making it the active dataset.
3321 * Any snapshots more recent than the target are destroyed, along with
3325 zfs_rollback(zfs_handle_t
*zhp
, zfs_handle_t
*snap
, boolean_t force
)
3327 rollback_data_t cb
= { 0 };
3329 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3330 boolean_t restore_resv
= 0;
3331 uint64_t old_volsize
= 0, new_volsize
;
3332 zfs_prop_t resv_prop
= { 0 };
3334 assert(zhp
->zfs_type
== ZFS_TYPE_FILESYSTEM
||
3335 zhp
->zfs_type
== ZFS_TYPE_VOLUME
);
3338 * Destroy all recent snapshots and its dependends.
3340 cb
.cb_force
= force
;
3341 cb
.cb_target
= snap
->zfs_name
;
3342 cb
.cb_create
= zfs_prop_get_int(snap
, ZFS_PROP_CREATETXG
);
3343 (void) zfs_iter_children(zhp
, rollback_destroy
, &cb
);
3349 * Now that we have verified that the snapshot is the latest,
3350 * rollback to the given snapshot.
3353 if (zhp
->zfs_type
== ZFS_TYPE_VOLUME
) {
3354 if (zfs_which_resv_prop(zhp
, &resv_prop
) < 0)
3356 old_volsize
= zfs_prop_get_int(zhp
, ZFS_PROP_VOLSIZE
);
3358 (old_volsize
== zfs_prop_get_int(zhp
, resv_prop
));
3361 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3363 if (ZFS_IS_VOLUME(zhp
))
3364 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3366 zc
.zc_objset_type
= DMU_OST_ZFS
;
3369 * We rely on zfs_iter_children() to verify that there are no
3370 * newer snapshots for the given dataset. Therefore, we can
3371 * simply pass the name on to the ioctl() call. There is still
3372 * an unlikely race condition where the user has taken a
3373 * snapshot since we verified that this was the most recent.
3376 if ((err
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_ROLLBACK
, &zc
)) != 0) {
3377 (void) zfs_standard_error_fmt(zhp
->zfs_hdl
, errno
,
3378 dgettext(TEXT_DOMAIN
, "cannot rollback '%s'"),
3384 * For volumes, if the pre-rollback volsize matched the pre-
3385 * rollback reservation and the volsize has changed then set
3386 * the reservation property to the post-rollback volsize.
3387 * Make a new handle since the rollback closed the dataset.
3389 if ((zhp
->zfs_type
== ZFS_TYPE_VOLUME
) &&
3390 (zhp
= make_dataset_handle(zhp
->zfs_hdl
, zhp
->zfs_name
))) {
3392 new_volsize
= zfs_prop_get_int(zhp
, ZFS_PROP_VOLSIZE
);
3393 if (old_volsize
!= new_volsize
)
3394 err
= zfs_prop_set_int(zhp
, resv_prop
,
3403 * Iterate over all dependents for a given dataset. This includes both
3404 * hierarchical dependents (children) and data dependents (snapshots and
3405 * clones). The bulk of the processing occurs in get_dependents() in
3409 zfs_iter_dependents(zfs_handle_t
*zhp
, boolean_t allowrecursion
,
3410 zfs_iter_f func
, void *data
)
3415 zfs_handle_t
*child
;
3418 if (get_dependents(zhp
->zfs_hdl
, allowrecursion
, zhp
->zfs_name
,
3419 &dependents
, &count
) != 0)
3422 for (i
= 0; i
< count
; i
++) {
3423 if ((child
= make_dataset_handle(zhp
->zfs_hdl
,
3424 dependents
[i
])) == NULL
)
3427 if ((ret
= func(child
, data
)) != 0)
3431 for (i
= 0; i
< count
; i
++)
3432 free(dependents
[i
]);
3439 * Renames the given dataset.
3442 zfs_rename(zfs_handle_t
*zhp
, const char *target
, boolean_t recursive
)
3445 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3447 prop_changelist_t
*cl
= NULL
;
3448 zfs_handle_t
*zhrp
= NULL
;
3449 char *parentname
= NULL
;
3450 char parent
[ZFS_MAXNAMELEN
];
3451 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3454 /* if we have the same exact name, just return success */
3455 if (strcmp(zhp
->zfs_name
, target
) == 0)
3458 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3459 "cannot rename to '%s'"), target
);
3462 * Make sure the target name is valid
3464 if (zhp
->zfs_type
== ZFS_TYPE_SNAPSHOT
) {
3465 if ((strchr(target
, '@') == NULL
) ||
3468 * Snapshot target name is abbreviated,
3469 * reconstruct full dataset name
3471 (void) strlcpy(parent
, zhp
->zfs_name
,
3473 delim
= strchr(parent
, '@');
3474 if (strchr(target
, '@') == NULL
)
3478 (void) strlcat(parent
, target
, sizeof (parent
));
3482 * Make sure we're renaming within the same dataset.
3484 delim
= strchr(target
, '@');
3485 if (strncmp(zhp
->zfs_name
, target
, delim
- target
)
3486 != 0 || zhp
->zfs_name
[delim
- target
] != '@') {
3487 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3488 "snapshots must be part of same "
3490 return (zfs_error(hdl
, EZFS_CROSSTARGET
,
3494 if (!zfs_validate_name(hdl
, target
, zhp
->zfs_type
, B_TRUE
))
3495 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3498 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3499 "recursive rename must be a snapshot"));
3500 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3503 if (!zfs_validate_name(hdl
, target
, zhp
->zfs_type
, B_TRUE
))
3504 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3506 /* validate parents */
3507 if (check_parents(hdl
, target
, NULL
, B_FALSE
, NULL
) != 0)
3510 /* make sure we're in the same pool */
3511 verify((delim
= strchr(target
, '/')) != NULL
);
3512 if (strncmp(zhp
->zfs_name
, target
, delim
- target
) != 0 ||
3513 zhp
->zfs_name
[delim
- target
] != '/') {
3514 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3515 "datasets must be within same pool"));
3516 return (zfs_error(hdl
, EZFS_CROSSTARGET
, errbuf
));
3519 /* new name cannot be a child of the current dataset name */
3520 if (is_descendant(zhp
->zfs_name
, target
)) {
3521 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3522 "New dataset name cannot be a descendant of "
3523 "current dataset name"));
3524 return (zfs_error(hdl
, EZFS_INVALIDNAME
, errbuf
));
3528 (void) snprintf(errbuf
, sizeof (errbuf
),
3529 dgettext(TEXT_DOMAIN
, "cannot rename '%s'"), zhp
->zfs_name
);
3531 if (getzoneid() == GLOBAL_ZONEID
&&
3532 zfs_prop_get_int(zhp
, ZFS_PROP_ZONED
)) {
3533 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3534 "dataset is used in a non-global zone"));
3535 return (zfs_error(hdl
, EZFS_ZONED
, errbuf
));
3540 parentname
= zfs_strdup(zhp
->zfs_hdl
, zhp
->zfs_name
);
3541 if (parentname
== NULL
) {
3545 delim
= strchr(parentname
, '@');
3547 zhrp
= zfs_open(zhp
->zfs_hdl
, parentname
, ZFS_TYPE_DATASET
);
3554 if ((cl
= changelist_gather(zhp
, ZFS_PROP_NAME
, 0, 0)) == NULL
)
3557 if (changelist_haszonedchild(cl
)) {
3558 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3559 "child dataset with inherited mountpoint is used "
3560 "in a non-global zone"));
3561 (void) zfs_error(hdl
, EZFS_ZONED
, errbuf
);
3566 if ((ret
= changelist_prefix(cl
)) != 0)
3570 if (ZFS_IS_VOLUME(zhp
))
3571 zc
.zc_objset_type
= DMU_OST_ZVOL
;
3573 zc
.zc_objset_type
= DMU_OST_ZFS
;
3575 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3576 (void) strlcpy(zc
.zc_value
, target
, sizeof (zc
.zc_value
));
3578 zc
.zc_cookie
= recursive
;
3580 if ((ret
= zfs_ioctl(zhp
->zfs_hdl
, ZFS_IOC_RENAME
, &zc
)) != 0) {
3582 * if it was recursive, the one that actually failed will
3585 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3586 "cannot rename '%s'"), zc
.zc_name
);
3588 if (recursive
&& errno
== EEXIST
) {
3589 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3590 "a child dataset already has a snapshot "
3591 "with the new name"));
3592 (void) zfs_error(hdl
, EZFS_EXISTS
, errbuf
);
3594 (void) zfs_standard_error(zhp
->zfs_hdl
, errno
, errbuf
);
3598 * On failure, we still want to remount any filesystems that
3599 * were previously mounted, so we don't alter the system state.
3602 (void) changelist_postfix(cl
);
3605 changelist_rename(cl
, zfs_get_name(zhp
), target
);
3606 ret
= changelist_postfix(cl
);
3618 changelist_free(cl
);
3624 zfs_get_user_props(zfs_handle_t
*zhp
)
3626 return (zhp
->zfs_user_props
);
3630 zfs_get_recvd_props(zfs_handle_t
*zhp
)
3632 if (zhp
->zfs_recvd_props
== NULL
)
3633 if (get_recvd_props_ioctl(zhp
) != 0)
3635 return (zhp
->zfs_recvd_props
);
3639 * This function is used by 'zfs list' to determine the exact set of columns to
3640 * display, and their maximum widths. This does two main things:
3642 * - If this is a list of all properties, then expand the list to include
3643 * all native properties, and set a flag so that for each dataset we look
3644 * for new unique user properties and add them to the list.
3646 * - For non fixed-width properties, keep track of the maximum width seen
3647 * so that we can size the column appropriately. If the user has
3648 * requested received property values, we also need to compute the width
3649 * of the RECEIVED column.
3652 zfs_expand_proplist(zfs_handle_t
*zhp
, zprop_list_t
**plp
, boolean_t received
)
3654 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3655 zprop_list_t
*entry
;
3656 zprop_list_t
**last
, **start
;
3657 nvlist_t
*userprops
, *propval
;
3660 char buf
[ZFS_MAXPROPLEN
];
3662 if (zprop_expand_list(hdl
, plp
, ZFS_TYPE_DATASET
) != 0)
3665 userprops
= zfs_get_user_props(zhp
);
3668 if (entry
->pl_all
&& nvlist_next_nvpair(userprops
, NULL
) != NULL
) {
3670 * Go through and add any user properties as necessary. We
3671 * start by incrementing our list pointer to the first
3672 * non-native property.
3675 while (*start
!= NULL
) {
3676 if ((*start
)->pl_prop
== ZPROP_INVAL
)
3678 start
= &(*start
)->pl_next
;
3682 while ((elem
= nvlist_next_nvpair(userprops
, elem
)) != NULL
) {
3684 * See if we've already found this property in our list.
3686 for (last
= start
; *last
!= NULL
;
3687 last
= &(*last
)->pl_next
) {
3688 if (strcmp((*last
)->pl_user_prop
,
3689 nvpair_name(elem
)) == 0)
3693 if (*last
== NULL
) {
3694 if ((entry
= zfs_alloc(hdl
,
3695 sizeof (zprop_list_t
))) == NULL
||
3696 ((entry
->pl_user_prop
= zfs_strdup(hdl
,
3697 nvpair_name(elem
)))) == NULL
) {
3702 entry
->pl_prop
= ZPROP_INVAL
;
3703 entry
->pl_width
= strlen(nvpair_name(elem
));
3704 entry
->pl_all
= B_TRUE
;
3711 * Now go through and check the width of any non-fixed columns
3713 for (entry
= *plp
; entry
!= NULL
; entry
= entry
->pl_next
) {
3714 if (entry
->pl_fixed
)
3717 if (entry
->pl_prop
!= ZPROP_INVAL
) {
3718 if (zfs_prop_get(zhp
, entry
->pl_prop
,
3719 buf
, sizeof (buf
), NULL
, NULL
, 0, B_FALSE
) == 0) {
3720 if (strlen(buf
) > entry
->pl_width
)
3721 entry
->pl_width
= strlen(buf
);
3723 if (received
&& zfs_prop_get_recvd(zhp
,
3724 zfs_prop_to_name(entry
->pl_prop
),
3725 buf
, sizeof (buf
), B_FALSE
) == 0)
3726 if (strlen(buf
) > entry
->pl_recvd_width
)
3727 entry
->pl_recvd_width
= strlen(buf
);
3729 if (nvlist_lookup_nvlist(userprops
, entry
->pl_user_prop
,
3731 verify(nvlist_lookup_string(propval
,
3732 ZPROP_VALUE
, &strval
) == 0);
3733 if (strlen(strval
) > entry
->pl_width
)
3734 entry
->pl_width
= strlen(strval
);
3736 if (received
&& zfs_prop_get_recvd(zhp
,
3737 entry
->pl_user_prop
,
3738 buf
, sizeof (buf
), B_FALSE
) == 0)
3739 if (strlen(buf
) > entry
->pl_recvd_width
)
3740 entry
->pl_recvd_width
= strlen(buf
);
3748 zfs_deleg_share_nfs(libzfs_handle_t
*hdl
, char *dataset
, char *path
,
3749 char *resource
, void *export
, void *sharetab
,
3750 int sharemax
, zfs_share_op_t operation
)
3752 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3755 (void) strlcpy(zc
.zc_name
, dataset
, sizeof (zc
.zc_name
));
3756 (void) strlcpy(zc
.zc_value
, path
, sizeof (zc
.zc_value
));
3758 (void) strlcpy(zc
.zc_string
, resource
, sizeof (zc
.zc_string
));
3759 zc
.zc_share
.z_sharedata
= (uint64_t)(uintptr_t)sharetab
;
3760 zc
.zc_share
.z_exportdata
= (uint64_t)(uintptr_t)export
;
3761 zc
.zc_share
.z_sharetype
= operation
;
3762 zc
.zc_share
.z_sharemax
= sharemax
;
3763 error
= ioctl(hdl
->libzfs_fd
, ZFS_IOC_SHARE
, &zc
);
3768 zfs_prune_proplist(zfs_handle_t
*zhp
, uint8_t *props
)
3773 * Keep a reference to the props-table against which we prune the
3776 zhp
->zfs_props_table
= props
;
3778 curr
= nvlist_next_nvpair(zhp
->zfs_props
, NULL
);
3781 zfs_prop_t zfs_prop
= zfs_name_to_prop(nvpair_name(curr
));
3782 nvpair_t
*next
= nvlist_next_nvpair(zhp
->zfs_props
, curr
);
3785 * User properties will result in ZPROP_INVAL, and since we
3786 * only know how to prune standard ZFS properties, we always
3787 * leave these in the list. This can also happen if we
3788 * encounter an unknown DSL property (when running older
3789 * software, for example).
3791 if (zfs_prop
!= ZPROP_INVAL
&& props
[zfs_prop
] == B_FALSE
)
3792 (void) nvlist_remove(zhp
->zfs_props
,
3793 nvpair_name(curr
), nvpair_type(curr
));
3799 zfs_smb_acl_mgmt(libzfs_handle_t
*hdl
, char *dataset
, char *path
,
3800 zfs_smb_acl_op_t cmd
, char *resource1
, char *resource2
)
3802 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3803 nvlist_t
*nvlist
= NULL
;
3806 (void) strlcpy(zc
.zc_name
, dataset
, sizeof (zc
.zc_name
));
3807 (void) strlcpy(zc
.zc_value
, path
, sizeof (zc
.zc_value
));
3808 zc
.zc_cookie
= (uint64_t)cmd
;
3810 if (cmd
== ZFS_SMB_ACL_RENAME
) {
3811 if (nvlist_alloc(&nvlist
, NV_UNIQUE_NAME
, 0) != 0) {
3812 (void) no_memory(hdl
);
3818 case ZFS_SMB_ACL_ADD
:
3819 case ZFS_SMB_ACL_REMOVE
:
3820 (void) strlcpy(zc
.zc_string
, resource1
, sizeof (zc
.zc_string
));
3822 case ZFS_SMB_ACL_RENAME
:
3823 if (nvlist_add_string(nvlist
, ZFS_SMB_ACL_SRC
,
3825 (void) no_memory(hdl
);
3828 if (nvlist_add_string(nvlist
, ZFS_SMB_ACL_TARGET
,
3830 (void) no_memory(hdl
);
3833 if (zcmd_write_src_nvlist(hdl
, &zc
, nvlist
) != 0) {
3834 nvlist_free(nvlist
);
3838 case ZFS_SMB_ACL_PURGE
:
3843 error
= ioctl(hdl
->libzfs_fd
, ZFS_IOC_SMB_ACL
, &zc
);
3845 nvlist_free(nvlist
);
3850 zfs_smb_acl_add(libzfs_handle_t
*hdl
, char *dataset
,
3851 char *path
, char *resource
)
3853 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_ADD
,
3858 zfs_smb_acl_remove(libzfs_handle_t
*hdl
, char *dataset
,
3859 char *path
, char *resource
)
3861 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_REMOVE
,
3866 zfs_smb_acl_purge(libzfs_handle_t
*hdl
, char *dataset
, char *path
)
3868 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_PURGE
,
3873 zfs_smb_acl_rename(libzfs_handle_t
*hdl
, char *dataset
, char *path
,
3874 char *oldname
, char *newname
)
3876 return (zfs_smb_acl_mgmt(hdl
, dataset
, path
, ZFS_SMB_ACL_RENAME
,
3881 zfs_userspace(zfs_handle_t
*zhp
, zfs_userquota_prop_t type
,
3882 zfs_userspace_cb_t func
, void *arg
)
3884 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3886 zfs_useracct_t buf
[100];
3888 (void) strncpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3890 zc
.zc_objset_type
= type
;
3891 zc
.zc_nvlist_dst
= (uintptr_t)buf
;
3895 zfs_useracct_t
*zua
= buf
;
3897 zc
.zc_nvlist_dst_size
= sizeof (buf
);
3898 error
= ioctl(zhp
->zfs_hdl
->libzfs_fd
,
3899 ZFS_IOC_USERSPACE_MANY
, &zc
);
3900 if (error
|| zc
.zc_nvlist_dst_size
== 0)
3903 while (zc
.zc_nvlist_dst_size
> 0) {
3904 error
= func(arg
, zua
->zu_domain
, zua
->zu_rid
,
3909 zc
.zc_nvlist_dst_size
-= sizeof (zfs_useracct_t
);
3917 zfs_hold(zfs_handle_t
*zhp
, const char *snapname
, const char *tag
,
3918 boolean_t recursive
, boolean_t temphold
, boolean_t enoent_ok
,
3919 int cleanup_fd
, uint64_t dsobj
, uint64_t createtxg
)
3921 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3922 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3924 ASSERT(!recursive
|| dsobj
== 0);
3926 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3927 (void) strlcpy(zc
.zc_value
, snapname
, sizeof (zc
.zc_value
));
3928 if (strlcpy(zc
.zc_string
, tag
, sizeof (zc
.zc_string
))
3929 >= sizeof (zc
.zc_string
))
3930 return (zfs_error(hdl
, EZFS_TAGTOOLONG
, tag
));
3931 zc
.zc_cookie
= recursive
;
3932 zc
.zc_temphold
= temphold
;
3933 zc
.zc_cleanup_fd
= cleanup_fd
;
3934 zc
.zc_sendobj
= dsobj
;
3935 zc
.zc_createtxg
= createtxg
;
3937 if (zfs_ioctl(hdl
, ZFS_IOC_HOLD
, &zc
) != 0) {
3938 char errbuf
[ZFS_MAXNAMELEN
+32];
3941 * if it was recursive, the one that actually failed will be in
3944 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3945 "cannot hold '%s@%s'"), zc
.zc_name
, snapname
);
3949 * Temporary tags wind up having the ds object id
3950 * prepended. So even if we passed the length check
3951 * above, it's still possible for the tag to wind
3952 * up being slightly too long.
3954 return (zfs_error(hdl
, EZFS_TAGTOOLONG
, errbuf
));
3956 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
3957 "pool must be upgraded"));
3958 return (zfs_error(hdl
, EZFS_BADVERSION
, errbuf
));
3960 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
3962 return (zfs_error(hdl
, EZFS_REFTAG_HOLD
, errbuf
));
3968 return (zfs_standard_error_fmt(hdl
, errno
, errbuf
));
3976 zfs_release(zfs_handle_t
*zhp
, const char *snapname
, const char *tag
,
3977 boolean_t recursive
)
3979 zfs_cmd_t zc
= { "\0", "\0", "\0", "\0", 0 };
3980 libzfs_handle_t
*hdl
= zhp
->zfs_hdl
;
3982 (void) strlcpy(zc
.zc_name
, zhp
->zfs_name
, sizeof (zc
.zc_name
));
3983 (void) strlcpy(zc
.zc_value
, snapname
, sizeof (zc
.zc_value
));
3984 if (strlcpy(zc
.zc_string
, tag
, sizeof (zc
.zc_string
))
3985 >= sizeof (zc
.zc_string
))
3986 return (zfs_error(hdl
, EZFS_TAGTOOLONG
, tag
));
3987 zc
.zc_cookie
= recursive
;
3989 if (zfs_ioctl(hdl
, ZFS_IOC_RELEASE
, &zc
) != 0) {
3990 char errbuf
[ZFS_MAXNAMELEN
+32];
3993 * if it was recursive, the one that actually failed will be in
3996 (void) snprintf(errbuf
, sizeof (errbuf
), dgettext(TEXT_DOMAIN
,
3997 "cannot release '%s' from '%s@%s'"), tag
, zc
.zc_name
,
4001 return (zfs_error(hdl
, EZFS_REFTAG_RELE
, errbuf
));
4003 zfs_error_aux(hdl
, dgettext(TEXT_DOMAIN
,
4004 "pool must be upgraded"));
4005 return (zfs_error(hdl
, EZFS_BADVERSION
, errbuf
));
4007 return (zfs_error(hdl
, EZFS_BADTYPE
, errbuf
));
4009 return (zfs_standard_error_fmt(hdl
, errno
, errbuf
));
4017 zvol_volsize_to_reservation(uint64_t volsize
, nvlist_t
*props
)
4020 uint64_t nblocks
, volblocksize
;
4024 if (nvlist_lookup_string(props
,
4025 zfs_prop_to_name(ZFS_PROP_COPIES
), &strval
) == 0)
4026 ncopies
= atoi(strval
);
4029 if (nvlist_lookup_uint64(props
,
4030 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE
),
4031 &volblocksize
) != 0)
4032 volblocksize
= ZVOL_DEFAULT_BLOCKSIZE
;
4033 nblocks
= volsize
/volblocksize
;
4034 /* start with metadnode L0-L6 */
4036 /* calculate number of indirects */
4037 while (nblocks
> 1) {
4038 nblocks
+= DNODES_PER_LEVEL
- 1;
4039 nblocks
/= DNODES_PER_LEVEL
;
4042 numdb
*= MIN(SPA_DVAS_PER_BP
, ncopies
+ 1);
4045 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't
4046 * compressed, but in practice they compress down to about
4049 numdb
*= 1ULL << DN_MAX_INDBLKSHIFT
;