libzfs_dataset.c revision 224525
1168404Spjd/*
2168404Spjd * CDDL HEADER START
3168404Spjd *
4168404Spjd * The contents of this file are subject to the terms of the
5168404Spjd * Common Development and Distribution License (the "License").
6168404Spjd * You may not use this file except in compliance with the License.
7168404Spjd *
8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9168404Spjd * or http://www.opensolaris.org/os/licensing.
10168404Spjd * See the License for the specific language governing permissions
11168404Spjd * and limitations under the License.
12168404Spjd *
13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each
14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15168404Spjd * If applicable, add the following below this CDDL HEADER, with the
16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying
17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner]
18168404Spjd *
19168404Spjd * CDDL HEADER END
20168404Spjd */
21168404Spjd
22168404Spjd/*
23219089Spjd * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24219089Spjd * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
25223623Smm * Copyright (c) 2011 by Delphix. All rights reserved.
26168404Spjd */
27168404Spjd
28168404Spjd#include <ctype.h>
29168404Spjd#include <errno.h>
30168404Spjd#include <libintl.h>
31168404Spjd#include <math.h>
32168404Spjd#include <stdio.h>
33168404Spjd#include <stdlib.h>
34168404Spjd#include <strings.h>
35168404Spjd#include <unistd.h>
36185029Spjd#include <stddef.h>
37168404Spjd#include <zone.h>
38168404Spjd#include <fcntl.h>
39168404Spjd#include <sys/mntent.h>
40168404Spjd#include <sys/mount.h>
41185029Spjd#include <priv.h>
42185029Spjd#include <pwd.h>
43185029Spjd#include <grp.h>
44185029Spjd#include <stddef.h>
45209962Smm#include <idmap.h>
46168404Spjd
47219089Spjd#include <sys/dnode.h>
48168404Spjd#include <sys/spa.h>
49168404Spjd#include <sys/zap.h>
50209962Smm#include <sys/misc.h>
51168404Spjd#include <libzfs.h>
52168404Spjd
53168404Spjd#include "zfs_namecheck.h"
54168404Spjd#include "zfs_prop.h"
55168404Spjd#include "libzfs_impl.h"
56185029Spjd#include "zfs_deleg.h"
57168404Spjd
58209962Smmstatic int userquota_propname_decode(const char *propname, boolean_t zoned,
59209962Smm    zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp);
60168676Spjd
61168404Spjd/*
62168404Spjd * Given a single type (not a mask of types), return the type in a human
63168404Spjd * readable form.
64168404Spjd */
65168404Spjdconst char *
66168404Spjdzfs_type_to_name(zfs_type_t type)
67168404Spjd{
68168404Spjd	switch (type) {
69168404Spjd	case ZFS_TYPE_FILESYSTEM:
70168404Spjd		return (dgettext(TEXT_DOMAIN, "filesystem"));
71168404Spjd	case ZFS_TYPE_SNAPSHOT:
72168404Spjd		return (dgettext(TEXT_DOMAIN, "snapshot"));
73168404Spjd	case ZFS_TYPE_VOLUME:
74168404Spjd		return (dgettext(TEXT_DOMAIN, "volume"));
75168404Spjd	}
76168404Spjd
77168404Spjd	return (NULL);
78168404Spjd}
79168404Spjd
80168404Spjd/*
81168404Spjd * Given a path and mask of ZFS types, return a string describing this dataset.
82168404Spjd * This is used when we fail to open a dataset and we cannot get an exact type.
83168404Spjd * We guess what the type would have been based on the path and the mask of
84168404Spjd * acceptable types.
85168404Spjd */
86168404Spjdstatic const char *
87168404Spjdpath_to_str(const char *path, int types)
88168404Spjd{
89168404Spjd	/*
90168404Spjd	 * When given a single type, always report the exact type.
91168404Spjd	 */
92168404Spjd	if (types == ZFS_TYPE_SNAPSHOT)
93168404Spjd		return (dgettext(TEXT_DOMAIN, "snapshot"));
94168404Spjd	if (types == ZFS_TYPE_FILESYSTEM)
95168404Spjd		return (dgettext(TEXT_DOMAIN, "filesystem"));
96168404Spjd	if (types == ZFS_TYPE_VOLUME)
97168404Spjd		return (dgettext(TEXT_DOMAIN, "volume"));
98168404Spjd
99168404Spjd	/*
100168404Spjd	 * The user is requesting more than one type of dataset.  If this is the
101168404Spjd	 * case, consult the path itself.  If we're looking for a snapshot, and
102168404Spjd	 * a '@' is found, then report it as "snapshot".  Otherwise, remove the
103168404Spjd	 * snapshot attribute and try again.
104168404Spjd	 */
105168404Spjd	if (types & ZFS_TYPE_SNAPSHOT) {
106168404Spjd		if (strchr(path, '@') != NULL)
107168404Spjd			return (dgettext(TEXT_DOMAIN, "snapshot"));
108168404Spjd		return (path_to_str(path, types & ~ZFS_TYPE_SNAPSHOT));
109168404Spjd	}
110168404Spjd
111168404Spjd	/*
112168404Spjd	 * The user has requested either filesystems or volumes.
113168404Spjd	 * We have no way of knowing a priori what type this would be, so always
114168404Spjd	 * report it as "filesystem" or "volume", our two primitive types.
115168404Spjd	 */
116168404Spjd	if (types & ZFS_TYPE_FILESYSTEM)
117168404Spjd		return (dgettext(TEXT_DOMAIN, "filesystem"));
118168404Spjd
119168404Spjd	assert(types & ZFS_TYPE_VOLUME);
120168404Spjd	return (dgettext(TEXT_DOMAIN, "volume"));
121168404Spjd}
122168404Spjd
123168404Spjd/*
124168404Spjd * Validate a ZFS path.  This is used even before trying to open the dataset, to
125209962Smm * provide a more meaningful error message.  We call zfs_error_aux() to
126209962Smm * explain exactly why the name was not valid.
127168404Spjd */
128219089Spjdint
129185029Spjdzfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
130185029Spjd    boolean_t modifying)
131168404Spjd{
132168404Spjd	namecheck_err_t why;
133168404Spjd	char what;
134168404Spjd
135219089Spjd	(void) zfs_prop_get_table();
136168404Spjd	if (dataset_namecheck(path, &why, &what) != 0) {
137168404Spjd		if (hdl != NULL) {
138168404Spjd			switch (why) {
139168404Spjd			case NAME_ERR_TOOLONG:
140168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
141168404Spjd				    "name is too long"));
142168404Spjd				break;
143168404Spjd
144168404Spjd			case NAME_ERR_LEADING_SLASH:
145168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
146168404Spjd				    "leading slash in name"));
147168404Spjd				break;
148168404Spjd
149168404Spjd			case NAME_ERR_EMPTY_COMPONENT:
150168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
151168404Spjd				    "empty component in name"));
152168404Spjd				break;
153168404Spjd
154168404Spjd			case NAME_ERR_TRAILING_SLASH:
155168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
156168404Spjd				    "trailing slash in name"));
157168404Spjd				break;
158168404Spjd
159168404Spjd			case NAME_ERR_INVALCHAR:
160168404Spjd				zfs_error_aux(hdl,
161168404Spjd				    dgettext(TEXT_DOMAIN, "invalid character "
162168404Spjd				    "'%c' in name"), what);
163168404Spjd				break;
164168404Spjd
165168404Spjd			case NAME_ERR_MULTIPLE_AT:
166168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
167168404Spjd				    "multiple '@' delimiters in name"));
168168404Spjd				break;
169168404Spjd
170168404Spjd			case NAME_ERR_NOLETTER:
171168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
172168404Spjd				    "pool doesn't begin with a letter"));
173168404Spjd				break;
174168404Spjd
175168404Spjd			case NAME_ERR_RESERVED:
176168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
177168404Spjd				    "name is reserved"));
178168404Spjd				break;
179168404Spjd
180168404Spjd			case NAME_ERR_DISKLIKE:
181168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
182168404Spjd				    "reserved disk name"));
183168404Spjd				break;
184168404Spjd			}
185168404Spjd		}
186168404Spjd
187168404Spjd		return (0);
188168404Spjd	}
189168404Spjd
190168404Spjd	if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) {
191168404Spjd		if (hdl != NULL)
192168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
193168404Spjd			    "snapshot delimiter '@' in filesystem name"));
194168404Spjd		return (0);
195168404Spjd	}
196168404Spjd
197168404Spjd	if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) {
198168404Spjd		if (hdl != NULL)
199168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
200168404Spjd			    "missing '@' delimiter in snapshot name"));
201168404Spjd		return (0);
202168404Spjd	}
203168404Spjd
204185029Spjd	if (modifying && strchr(path, '%') != NULL) {
205185029Spjd		if (hdl != NULL)
206185029Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
207185029Spjd			    "invalid character %c in name"), '%');
208185029Spjd		return (0);
209185029Spjd	}
210185029Spjd
211168404Spjd	return (-1);
212168404Spjd}
213168404Spjd
214168404Spjdint
215168404Spjdzfs_name_valid(const char *name, zfs_type_t type)
216168404Spjd{
217185029Spjd	if (type == ZFS_TYPE_POOL)
218185029Spjd		return (zpool_name_valid(NULL, B_FALSE, name));
219185029Spjd	return (zfs_validate_name(NULL, name, type, B_FALSE));
220168404Spjd}
221168404Spjd
222168404Spjd/*
223168404Spjd * This function takes the raw DSL properties, and filters out the user-defined
224168404Spjd * properties into a separate nvlist.
225168404Spjd */
226185029Spjdstatic nvlist_t *
227185029Spjdprocess_user_props(zfs_handle_t *zhp, nvlist_t *props)
228168404Spjd{
229168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
230168404Spjd	nvpair_t *elem;
231168404Spjd	nvlist_t *propval;
232185029Spjd	nvlist_t *nvl;
233168404Spjd
234185029Spjd	if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) {
235185029Spjd		(void) no_memory(hdl);
236185029Spjd		return (NULL);
237185029Spjd	}
238168404Spjd
239168404Spjd	elem = NULL;
240185029Spjd	while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
241168404Spjd		if (!zfs_prop_user(nvpair_name(elem)))
242168404Spjd			continue;
243168404Spjd
244168404Spjd		verify(nvpair_value_nvlist(elem, &propval) == 0);
245185029Spjd		if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) {
246185029Spjd			nvlist_free(nvl);
247185029Spjd			(void) no_memory(hdl);
248185029Spjd			return (NULL);
249185029Spjd		}
250168404Spjd	}
251168404Spjd
252185029Spjd	return (nvl);
253168404Spjd}
254168404Spjd
255185029Spjdstatic zpool_handle_t *
256185029Spjdzpool_add_handle(zfs_handle_t *zhp, const char *pool_name)
257185029Spjd{
258185029Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
259185029Spjd	zpool_handle_t *zph;
260185029Spjd
261185029Spjd	if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) {
262185029Spjd		if (hdl->libzfs_pool_handles != NULL)
263185029Spjd			zph->zpool_next = hdl->libzfs_pool_handles;
264185029Spjd		hdl->libzfs_pool_handles = zph;
265185029Spjd	}
266185029Spjd	return (zph);
267185029Spjd}
268185029Spjd
269185029Spjdstatic zpool_handle_t *
270185029Spjdzpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len)
271185029Spjd{
272185029Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
273185029Spjd	zpool_handle_t *zph = hdl->libzfs_pool_handles;
274185029Spjd
275185029Spjd	while ((zph != NULL) &&
276185029Spjd	    (strncmp(pool_name, zpool_get_name(zph), len) != 0))
277185029Spjd		zph = zph->zpool_next;
278185029Spjd	return (zph);
279185029Spjd}
280185029Spjd
281168404Spjd/*
282185029Spjd * Returns a handle to the pool that contains the provided dataset.
283185029Spjd * If a handle to that pool already exists then that handle is returned.
284185029Spjd * Otherwise, a new handle is created and added to the list of handles.
285185029Spjd */
286185029Spjdstatic zpool_handle_t *
287185029Spjdzpool_handle(zfs_handle_t *zhp)
288185029Spjd{
289185029Spjd	char *pool_name;
290185029Spjd	int len;
291185029Spjd	zpool_handle_t *zph;
292185029Spjd
293185029Spjd	len = strcspn(zhp->zfs_name, "/@") + 1;
294185029Spjd	pool_name = zfs_alloc(zhp->zfs_hdl, len);
295185029Spjd	(void) strlcpy(pool_name, zhp->zfs_name, len);
296185029Spjd
297185029Spjd	zph = zpool_find_handle(zhp, pool_name, len);
298185029Spjd	if (zph == NULL)
299185029Spjd		zph = zpool_add_handle(zhp, pool_name);
300185029Spjd
301185029Spjd	free(pool_name);
302185029Spjd	return (zph);
303185029Spjd}
304185029Spjd
305185029Spjdvoid
306185029Spjdzpool_free_handles(libzfs_handle_t *hdl)
307185029Spjd{
308185029Spjd	zpool_handle_t *next, *zph = hdl->libzfs_pool_handles;
309185029Spjd
310185029Spjd	while (zph != NULL) {
311185029Spjd		next = zph->zpool_next;
312185029Spjd		zpool_close(zph);
313185029Spjd		zph = next;
314185029Spjd	}
315185029Spjd	hdl->libzfs_pool_handles = NULL;
316185029Spjd}
317185029Spjd
318185029Spjd/*
319168404Spjd * Utility function to gather stats (objset and zpl) for the given object.
320168404Spjd */
321219089Spjdstatic int
322209962Smmget_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc)
323168404Spjd{
324168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
325168404Spjd
326209962Smm	(void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name));
327168404Spjd
328209962Smm	while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) {
329168404Spjd		if (errno == ENOMEM) {
330209962Smm			if (zcmd_expand_dst_nvlist(hdl, zc) != 0) {
331168404Spjd				return (-1);
332168404Spjd			}
333168404Spjd		} else {
334168404Spjd			return (-1);
335168404Spjd		}
336168404Spjd	}
337209962Smm	return (0);
338209962Smm}
339168404Spjd
340219089Spjd/*
341219089Spjd * Utility function to get the received properties of the given object.
342219089Spjd */
343209962Smmstatic int
344219089Spjdget_recvd_props_ioctl(zfs_handle_t *zhp)
345219089Spjd{
346219089Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
347219089Spjd	nvlist_t *recvdprops;
348219089Spjd	zfs_cmd_t zc = { 0 };
349219089Spjd	int err;
350219089Spjd
351219089Spjd	if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
352219089Spjd		return (-1);
353219089Spjd
354219089Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
355219089Spjd
356219089Spjd	while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) {
357219089Spjd		if (errno == ENOMEM) {
358219089Spjd			if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
359219089Spjd				return (-1);
360219089Spjd			}
361219089Spjd		} else {
362219089Spjd			zcmd_free_nvlists(&zc);
363219089Spjd			return (-1);
364219089Spjd		}
365219089Spjd	}
366219089Spjd
367219089Spjd	err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops);
368219089Spjd	zcmd_free_nvlists(&zc);
369219089Spjd	if (err != 0)
370219089Spjd		return (-1);
371219089Spjd
372219089Spjd	nvlist_free(zhp->zfs_recvd_props);
373219089Spjd	zhp->zfs_recvd_props = recvdprops;
374219089Spjd
375219089Spjd	return (0);
376219089Spjd}
377219089Spjd
378219089Spjdstatic int
379209962Smmput_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc)
380209962Smm{
381209962Smm	nvlist_t *allprops, *userprops;
382168404Spjd
383209962Smm	zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */
384209962Smm
385209962Smm	if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) {
386168404Spjd		return (-1);
387168404Spjd	}
388168404Spjd
389209962Smm	/*
390209962Smm	 * XXX Why do we store the user props separately, in addition to
391209962Smm	 * storing them in zfs_props?
392209962Smm	 */
393185029Spjd	if ((userprops = process_user_props(zhp, allprops)) == NULL) {
394185029Spjd		nvlist_free(allprops);
395168404Spjd		return (-1);
396185029Spjd	}
397168404Spjd
398185029Spjd	nvlist_free(zhp->zfs_props);
399185029Spjd	nvlist_free(zhp->zfs_user_props);
400185029Spjd
401185029Spjd	zhp->zfs_props = allprops;
402185029Spjd	zhp->zfs_user_props = userprops;
403185029Spjd
404168404Spjd	return (0);
405168404Spjd}
406168404Spjd
407209962Smmstatic int
408209962Smmget_stats(zfs_handle_t *zhp)
409209962Smm{
410209962Smm	int rc = 0;
411209962Smm	zfs_cmd_t zc = { 0 };
412209962Smm
413209962Smm	if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0)
414209962Smm		return (-1);
415209962Smm	if (get_stats_ioctl(zhp, &zc) != 0)
416209962Smm		rc = -1;
417209962Smm	else if (put_stats_zhdl(zhp, &zc) != 0)
418209962Smm		rc = -1;
419209962Smm	zcmd_free_nvlists(&zc);
420209962Smm	return (rc);
421209962Smm}
422209962Smm
423168404Spjd/*
424168404Spjd * Refresh the properties currently stored in the handle.
425168404Spjd */
426168404Spjdvoid
427168404Spjdzfs_refresh_properties(zfs_handle_t *zhp)
428168404Spjd{
429168404Spjd	(void) get_stats(zhp);
430168404Spjd}
431168404Spjd
432168404Spjd/*
433168404Spjd * Makes a handle from the given dataset name.  Used by zfs_open() and
434168404Spjd * zfs_iter_* to create child handles on the fly.
435168404Spjd */
436209962Smmstatic int
437209962Smmmake_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc)
438168404Spjd{
439219089Spjd	if (put_stats_zhdl(zhp, zc) != 0)
440209962Smm		return (-1);
441168404Spjd
442168404Spjd	/*
443168404Spjd	 * We've managed to open the dataset and gather statistics.  Determine
444168404Spjd	 * the high-level type.
445168404Spjd	 */
446168404Spjd	if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL)
447168404Spjd		zhp->zfs_head_type = ZFS_TYPE_VOLUME;
448168404Spjd	else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS)
449168404Spjd		zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM;
450168404Spjd	else
451168404Spjd		abort();
452168404Spjd
453168404Spjd	if (zhp->zfs_dmustats.dds_is_snapshot)
454168404Spjd		zhp->zfs_type = ZFS_TYPE_SNAPSHOT;
455168404Spjd	else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL)
456168404Spjd		zhp->zfs_type = ZFS_TYPE_VOLUME;
457168404Spjd	else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS)
458168404Spjd		zhp->zfs_type = ZFS_TYPE_FILESYSTEM;
459168404Spjd	else
460168404Spjd		abort();	/* we should never see any other types */
461168404Spjd
462219089Spjd	if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL)
463219089Spjd		return (-1);
464219089Spjd
465209962Smm	return (0);
466209962Smm}
467209962Smm
468209962Smmzfs_handle_t *
469209962Smmmake_dataset_handle(libzfs_handle_t *hdl, const char *path)
470209962Smm{
471209962Smm	zfs_cmd_t zc = { 0 };
472209962Smm
473209962Smm	zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
474209962Smm
475209962Smm	if (zhp == NULL)
476209962Smm		return (NULL);
477209962Smm
478209962Smm	zhp->zfs_hdl = hdl;
479209962Smm	(void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name));
480209962Smm	if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) {
481209962Smm		free(zhp);
482209962Smm		return (NULL);
483209962Smm	}
484209962Smm	if (get_stats_ioctl(zhp, &zc) == -1) {
485209962Smm		zcmd_free_nvlists(&zc);
486209962Smm		free(zhp);
487209962Smm		return (NULL);
488209962Smm	}
489209962Smm	if (make_dataset_handle_common(zhp, &zc) == -1) {
490209962Smm		free(zhp);
491209962Smm		zhp = NULL;
492209962Smm	}
493209962Smm	zcmd_free_nvlists(&zc);
494168404Spjd	return (zhp);
495168404Spjd}
496168404Spjd
497209962Smmstatic zfs_handle_t *
498209962Smmmake_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc)
499209962Smm{
500209962Smm	zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
501209962Smm
502209962Smm	if (zhp == NULL)
503209962Smm		return (NULL);
504209962Smm
505209962Smm	zhp->zfs_hdl = hdl;
506209962Smm	(void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name));
507209962Smm	if (make_dataset_handle_common(zhp, zc) == -1) {
508209962Smm		free(zhp);
509209962Smm		return (NULL);
510209962Smm	}
511209962Smm	return (zhp);
512209962Smm}
513209962Smm
514168404Spjd/*
515168404Spjd * Opens the given snapshot, filesystem, or volume.   The 'types'
516168404Spjd * argument is a mask of acceptable types.  The function will print an
517168404Spjd * appropriate error message and return NULL if it can't be opened.
518168404Spjd */
519168404Spjdzfs_handle_t *
520168404Spjdzfs_open(libzfs_handle_t *hdl, const char *path, int types)
521168404Spjd{
522168404Spjd	zfs_handle_t *zhp;
523168404Spjd	char errbuf[1024];
524168404Spjd
525168404Spjd	(void) snprintf(errbuf, sizeof (errbuf),
526168404Spjd	    dgettext(TEXT_DOMAIN, "cannot open '%s'"), path);
527168404Spjd
528168404Spjd	/*
529168404Spjd	 * Validate the name before we even try to open it.
530168404Spjd	 */
531185029Spjd	if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) {
532168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
533168404Spjd		    "invalid dataset name"));
534168404Spjd		(void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
535168404Spjd		return (NULL);
536168404Spjd	}
537168404Spjd
538168404Spjd	/*
539168404Spjd	 * Try to get stats for the dataset, which will tell us if it exists.
540168404Spjd	 */
541168404Spjd	errno = 0;
542168404Spjd	if ((zhp = make_dataset_handle(hdl, path)) == NULL) {
543168404Spjd		(void) zfs_standard_error(hdl, errno, errbuf);
544168404Spjd		return (NULL);
545168404Spjd	}
546168404Spjd
547168404Spjd	if (!(types & zhp->zfs_type)) {
548168404Spjd		(void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
549168404Spjd		zfs_close(zhp);
550168404Spjd		return (NULL);
551168404Spjd	}
552168404Spjd
553168404Spjd	return (zhp);
554168404Spjd}
555168404Spjd
556168404Spjd/*
557168404Spjd * Release a ZFS handle.  Nothing to do but free the associated memory.
558168404Spjd */
559168404Spjdvoid
560168404Spjdzfs_close(zfs_handle_t *zhp)
561168404Spjd{
562168404Spjd	if (zhp->zfs_mntopts)
563168404Spjd		free(zhp->zfs_mntopts);
564168404Spjd	nvlist_free(zhp->zfs_props);
565168404Spjd	nvlist_free(zhp->zfs_user_props);
566219089Spjd	nvlist_free(zhp->zfs_recvd_props);
567168404Spjd	free(zhp);
568168404Spjd}
569168404Spjd
570209962Smmtypedef struct mnttab_node {
571209962Smm	struct mnttab mtn_mt;
572209962Smm	avl_node_t mtn_node;
573209962Smm} mnttab_node_t;
574209962Smm
575209962Smmstatic int
576209962Smmlibzfs_mnttab_cache_compare(const void *arg1, const void *arg2)
577209962Smm{
578209962Smm	const mnttab_node_t *mtn1 = arg1;
579209962Smm	const mnttab_node_t *mtn2 = arg2;
580209962Smm	int rv;
581209962Smm
582209962Smm	rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special);
583209962Smm
584209962Smm	if (rv == 0)
585209962Smm		return (0);
586209962Smm	return (rv > 0 ? 1 : -1);
587209962Smm}
588209962Smm
589209962Smmvoid
590209962Smmlibzfs_mnttab_init(libzfs_handle_t *hdl)
591209962Smm{
592209962Smm	assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0);
593209962Smm	avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare,
594209962Smm	    sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node));
595209962Smm}
596209962Smm
597209962Smmvoid
598209962Smmlibzfs_mnttab_update(libzfs_handle_t *hdl)
599209962Smm{
600209962Smm	struct mnttab entry;
601209962Smm
602209962Smm	rewind(hdl->libzfs_mnttab);
603209962Smm	while (getmntent(hdl->libzfs_mnttab, &entry) == 0) {
604209962Smm		mnttab_node_t *mtn;
605209962Smm
606209962Smm		if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
607209962Smm			continue;
608209962Smm		mtn = zfs_alloc(hdl, sizeof (mnttab_node_t));
609209962Smm		mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special);
610209962Smm		mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp);
611209962Smm		mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype);
612209962Smm		mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts);
613209962Smm		avl_add(&hdl->libzfs_mnttab_cache, mtn);
614209962Smm	}
615209962Smm}
616209962Smm
617209962Smmvoid
618209962Smmlibzfs_mnttab_fini(libzfs_handle_t *hdl)
619209962Smm{
620209962Smm	void *cookie = NULL;
621209962Smm	mnttab_node_t *mtn;
622209962Smm
623209962Smm	while (mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) {
624209962Smm		free(mtn->mtn_mt.mnt_special);
625209962Smm		free(mtn->mtn_mt.mnt_mountp);
626209962Smm		free(mtn->mtn_mt.mnt_fstype);
627209962Smm		free(mtn->mtn_mt.mnt_mntopts);
628209962Smm		free(mtn);
629209962Smm	}
630209962Smm	avl_destroy(&hdl->libzfs_mnttab_cache);
631209962Smm}
632209962Smm
633209962Smmvoid
634209962Smmlibzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable)
635209962Smm{
636209962Smm	hdl->libzfs_mnttab_enable = enable;
637209962Smm}
638209962Smm
639185029Spjdint
640209962Smmlibzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname,
641209962Smm    struct mnttab *entry)
642209962Smm{
643209962Smm	mnttab_node_t find;
644209962Smm	mnttab_node_t *mtn;
645209962Smm
646209962Smm	if (!hdl->libzfs_mnttab_enable) {
647209962Smm		struct mnttab srch = { 0 };
648209962Smm
649209962Smm		if (avl_numnodes(&hdl->libzfs_mnttab_cache))
650209962Smm			libzfs_mnttab_fini(hdl);
651209962Smm		rewind(hdl->libzfs_mnttab);
652209962Smm		srch.mnt_special = (char *)fsname;
653209962Smm		srch.mnt_fstype = MNTTYPE_ZFS;
654209962Smm		if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0)
655209962Smm			return (0);
656209962Smm		else
657209962Smm			return (ENOENT);
658209962Smm	}
659209962Smm
660209962Smm	if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0)
661209962Smm		libzfs_mnttab_update(hdl);
662209962Smm
663209962Smm	find.mtn_mt.mnt_special = (char *)fsname;
664209962Smm	mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL);
665209962Smm	if (mtn) {
666209962Smm		*entry = mtn->mtn_mt;
667209962Smm		return (0);
668209962Smm	}
669209962Smm	return (ENOENT);
670209962Smm}
671209962Smm
672209962Smmvoid
673209962Smmlibzfs_mnttab_add(libzfs_handle_t *hdl, const char *special,
674209962Smm    const char *mountp, const char *mntopts)
675209962Smm{
676209962Smm	mnttab_node_t *mtn;
677209962Smm
678209962Smm	if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0)
679209962Smm		return;
680209962Smm	mtn = zfs_alloc(hdl, sizeof (mnttab_node_t));
681209962Smm	mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special);
682209962Smm	mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp);
683209962Smm	mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS);
684209962Smm	mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts);
685209962Smm	avl_add(&hdl->libzfs_mnttab_cache, mtn);
686209962Smm}
687209962Smm
688209962Smmvoid
689209962Smmlibzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname)
690209962Smm{
691209962Smm	mnttab_node_t find;
692209962Smm	mnttab_node_t *ret;
693209962Smm
694209962Smm	find.mtn_mt.mnt_special = (char *)fsname;
695209962Smm	if (ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) {
696209962Smm		avl_remove(&hdl->libzfs_mnttab_cache, ret);
697209962Smm		free(ret->mtn_mt.mnt_special);
698209962Smm		free(ret->mtn_mt.mnt_mountp);
699209962Smm		free(ret->mtn_mt.mnt_fstype);
700209962Smm		free(ret->mtn_mt.mnt_mntopts);
701209962Smm		free(ret);
702209962Smm	}
703209962Smm}
704209962Smm
705209962Smmint
706185029Spjdzfs_spa_version(zfs_handle_t *zhp, int *spa_version)
707168404Spjd{
708185029Spjd	zpool_handle_t *zpool_handle = zhp->zpool_hdl;
709168404Spjd
710185029Spjd	if (zpool_handle == NULL)
711168404Spjd		return (-1);
712168404Spjd
713185029Spjd	*spa_version = zpool_get_prop_int(zpool_handle,
714185029Spjd	    ZPOOL_PROP_VERSION, NULL);
715168404Spjd	return (0);
716168404Spjd}
717168404Spjd
718168404Spjd/*
719185029Spjd * The choice of reservation property depends on the SPA version.
720168404Spjd */
721168404Spjdstatic int
722185029Spjdzfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop)
723168404Spjd{
724185029Spjd	int spa_version;
725168404Spjd
726185029Spjd	if (zfs_spa_version(zhp, &spa_version) < 0)
727168404Spjd		return (-1);
728168404Spjd
729185029Spjd	if (spa_version >= SPA_VERSION_REFRESERVATION)
730185029Spjd		*resv_prop = ZFS_PROP_REFRESERVATION;
731185029Spjd	else
732185029Spjd		*resv_prop = ZFS_PROP_RESERVATION;
733168404Spjd
734168404Spjd	return (0);
735168404Spjd}
736168404Spjd
737168404Spjd/*
738168404Spjd * Given an nvlist of properties to set, validates that they are correct, and
739168404Spjd * parses any numeric properties (index, boolean, etc) if they are specified as
740168404Spjd * strings.
741168404Spjd */
742168404Spjdnvlist_t *
743185029Spjdzfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
744185029Spjd    uint64_t zoned, zfs_handle_t *zhp, const char *errbuf)
745168404Spjd{
746168404Spjd	nvpair_t *elem;
747168404Spjd	uint64_t intval;
748168404Spjd	char *strval;
749185029Spjd	zfs_prop_t prop;
750168404Spjd	nvlist_t *ret;
751185029Spjd	int chosen_normal = -1;
752185029Spjd	int chosen_utf = -1;
753168404Spjd
754168404Spjd	if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) {
755168404Spjd		(void) no_memory(hdl);
756168404Spjd		return (NULL);
757168404Spjd	}
758168404Spjd
759209962Smm	/*
760209962Smm	 * Make sure this property is valid and applies to this type.
761209962Smm	 */
762209962Smm
763168404Spjd	elem = NULL;
764168404Spjd	while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
765185029Spjd		const char *propname = nvpair_name(elem);
766168404Spjd
767209962Smm		prop = zfs_name_to_prop(propname);
768209962Smm		if (prop == ZPROP_INVAL && zfs_prop_user(propname)) {
769185029Spjd			/*
770209962Smm			 * This is a user property: make sure it's a
771185029Spjd			 * string, and that it's less than ZAP_MAXNAMELEN.
772185029Spjd			 */
773185029Spjd			if (nvpair_type(elem) != DATA_TYPE_STRING) {
774185029Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
775185029Spjd				    "'%s' must be a string"), propname);
776185029Spjd				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
777185029Spjd				goto error;
778168404Spjd			}
779168404Spjd
780185029Spjd			if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) {
781185029Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
782185029Spjd				    "property name '%s' is too long"),
783185029Spjd				    propname);
784185029Spjd				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
785185029Spjd				goto error;
786185029Spjd			}
787185029Spjd
788168404Spjd			(void) nvpair_value_string(elem, &strval);
789168404Spjd			if (nvlist_add_string(ret, propname, strval) != 0) {
790168404Spjd				(void) no_memory(hdl);
791168404Spjd				goto error;
792168404Spjd			}
793168404Spjd			continue;
794168404Spjd		}
795168404Spjd
796209962Smm		/*
797209962Smm		 * Currently, only user properties can be modified on
798209962Smm		 * snapshots.
799209962Smm		 */
800185029Spjd		if (type == ZFS_TYPE_SNAPSHOT) {
801185029Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
802185029Spjd			    "this property can not be modified for snapshots"));
803185029Spjd			(void) zfs_error(hdl, EZFS_PROPTYPE, errbuf);
804185029Spjd			goto error;
805185029Spjd		}
806168404Spjd
807209962Smm		if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) {
808209962Smm			zfs_userquota_prop_t uqtype;
809209962Smm			char newpropname[128];
810209962Smm			char domain[128];
811209962Smm			uint64_t rid;
812209962Smm			uint64_t valary[3];
813209962Smm
814209962Smm			if (userquota_propname_decode(propname, zoned,
815209962Smm			    &uqtype, domain, sizeof (domain), &rid) != 0) {
816209962Smm				zfs_error_aux(hdl,
817209962Smm				    dgettext(TEXT_DOMAIN,
818209962Smm				    "'%s' has an invalid user/group name"),
819209962Smm				    propname);
820209962Smm				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
821209962Smm				goto error;
822209962Smm			}
823209962Smm
824209962Smm			if (uqtype != ZFS_PROP_USERQUOTA &&
825209962Smm			    uqtype != ZFS_PROP_GROUPQUOTA) {
826209962Smm				zfs_error_aux(hdl,
827209962Smm				    dgettext(TEXT_DOMAIN, "'%s' is readonly"),
828209962Smm				    propname);
829209962Smm				(void) zfs_error(hdl, EZFS_PROPREADONLY,
830209962Smm				    errbuf);
831209962Smm				goto error;
832209962Smm			}
833209962Smm
834209962Smm			if (nvpair_type(elem) == DATA_TYPE_STRING) {
835209962Smm				(void) nvpair_value_string(elem, &strval);
836209962Smm				if (strcmp(strval, "none") == 0) {
837209962Smm					intval = 0;
838209962Smm				} else if (zfs_nicestrtonum(hdl,
839209962Smm				    strval, &intval) != 0) {
840209962Smm					(void) zfs_error(hdl,
841209962Smm					    EZFS_BADPROP, errbuf);
842209962Smm					goto error;
843209962Smm				}
844209962Smm			} else if (nvpair_type(elem) ==
845209962Smm			    DATA_TYPE_UINT64) {
846209962Smm				(void) nvpair_value_uint64(elem, &intval);
847209962Smm				if (intval == 0) {
848209962Smm					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
849209962Smm					    "use 'none' to disable "
850209962Smm					    "userquota/groupquota"));
851209962Smm					goto error;
852209962Smm				}
853209962Smm			} else {
854209962Smm				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
855209962Smm				    "'%s' must be a number"), propname);
856209962Smm				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
857209962Smm				goto error;
858209962Smm			}
859209962Smm
860219089Spjd			/*
861219089Spjd			 * Encode the prop name as
862219089Spjd			 * userquota@<hex-rid>-domain, to make it easy
863219089Spjd			 * for the kernel to decode.
864219089Spjd			 */
865209962Smm			(void) snprintf(newpropname, sizeof (newpropname),
866219089Spjd			    "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype],
867219089Spjd			    (longlong_t)rid, domain);
868209962Smm			valary[0] = uqtype;
869209962Smm			valary[1] = rid;
870209962Smm			valary[2] = intval;
871209962Smm			if (nvlist_add_uint64_array(ret, newpropname,
872209962Smm			    valary, 3) != 0) {
873209962Smm				(void) no_memory(hdl);
874209962Smm				goto error;
875209962Smm			}
876209962Smm			continue;
877209962Smm		}
878209962Smm
879209962Smm		if (prop == ZPROP_INVAL) {
880209962Smm			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
881209962Smm			    "invalid property '%s'"), propname);
882209962Smm			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
883209962Smm			goto error;
884209962Smm		}
885209962Smm
886168404Spjd		if (!zfs_prop_valid_for_type(prop, type)) {
887168404Spjd			zfs_error_aux(hdl,
888168404Spjd			    dgettext(TEXT_DOMAIN, "'%s' does not "
889168404Spjd			    "apply to datasets of this type"), propname);
890168404Spjd			(void) zfs_error(hdl, EZFS_PROPTYPE, errbuf);
891168404Spjd			goto error;
892168404Spjd		}
893168404Spjd
894168404Spjd		if (zfs_prop_readonly(prop) &&
895185029Spjd		    (!zfs_prop_setonce(prop) || zhp != NULL)) {
896168404Spjd			zfs_error_aux(hdl,
897168404Spjd			    dgettext(TEXT_DOMAIN, "'%s' is readonly"),
898168404Spjd			    propname);
899168404Spjd			(void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf);
900168404Spjd			goto error;
901168404Spjd		}
902168404Spjd
903185029Spjd		if (zprop_parse_value(hdl, elem, prop, type, ret,
904185029Spjd		    &strval, &intval, errbuf) != 0)
905185029Spjd			goto error;
906185029Spjd
907168404Spjd		/*
908185029Spjd		 * Perform some additional checks for specific properties.
909168404Spjd		 */
910185029Spjd		switch (prop) {
911185029Spjd		case ZFS_PROP_VERSION:
912185029Spjd		{
913185029Spjd			int version;
914168404Spjd
915185029Spjd			if (zhp == NULL)
916185029Spjd				break;
917185029Spjd			version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
918185029Spjd			if (intval < version) {
919168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
920185029Spjd				    "Can not downgrade; already at version %u"),
921185029Spjd				    version);
922168404Spjd				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
923168404Spjd				goto error;
924168404Spjd			}
925168404Spjd			break;
926168404Spjd		}
927168404Spjd
928168404Spjd		case ZFS_PROP_RECORDSIZE:
929168404Spjd		case ZFS_PROP_VOLBLOCKSIZE:
930168404Spjd			/* must be power of two within SPA_{MIN,MAX}BLOCKSIZE */
931168404Spjd			if (intval < SPA_MINBLOCKSIZE ||
932168404Spjd			    intval > SPA_MAXBLOCKSIZE || !ISP2(intval)) {
933168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
934168404Spjd				    "'%s' must be power of 2 from %u "
935168404Spjd				    "to %uk"), propname,
936168404Spjd				    (uint_t)SPA_MINBLOCKSIZE,
937168404Spjd				    (uint_t)SPA_MAXBLOCKSIZE >> 10);
938168404Spjd				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
939168404Spjd				goto error;
940168404Spjd			}
941168404Spjd			break;
942168404Spjd
943219089Spjd		case ZFS_PROP_MLSLABEL:
944219089Spjd		{
945219089Spjd#ifdef sun
946219089Spjd			/*
947219089Spjd			 * Verify the mlslabel string and convert to
948219089Spjd			 * internal hex label string.
949219089Spjd			 */
950219089Spjd
951219089Spjd			m_label_t *new_sl;
952219089Spjd			char *hex = NULL;	/* internal label string */
953219089Spjd
954219089Spjd			/* Default value is already OK. */
955219089Spjd			if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
956219089Spjd				break;
957219089Spjd
958219089Spjd			/* Verify the label can be converted to binary form */
959219089Spjd			if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) ||
960219089Spjd			    (str_to_label(strval, &new_sl, MAC_LABEL,
961219089Spjd			    L_NO_CORRECTION, NULL) == -1)) {
962219089Spjd				goto badlabel;
963168404Spjd			}
964168404Spjd
965219089Spjd			/* Now translate to hex internal label string */
966219089Spjd			if (label_to_str(new_sl, &hex, M_INTERNAL,
967219089Spjd			    DEF_NAMES) != 0) {
968219089Spjd				if (hex)
969219089Spjd					free(hex);
970219089Spjd				goto badlabel;
971219089Spjd			}
972219089Spjd			m_label_free(new_sl);
973219089Spjd
974219089Spjd			/* If string is already in internal form, we're done. */
975219089Spjd			if (strcmp(strval, hex) == 0) {
976219089Spjd				free(hex);
977219089Spjd				break;
978219089Spjd			}
979219089Spjd
980219089Spjd			/* Replace the label string with the internal form. */
981219089Spjd			(void) nvlist_remove(ret, zfs_prop_to_name(prop),
982219089Spjd			    DATA_TYPE_STRING);
983219089Spjd			verify(nvlist_add_string(ret, zfs_prop_to_name(prop),
984219089Spjd			    hex) == 0);
985219089Spjd			free(hex);
986219089Spjd
987168404Spjd			break;
988168404Spjd
989219089Spjdbadlabel:
990219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
991219089Spjd			    "invalid mlslabel '%s'"), strval);
992219089Spjd			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
993219089Spjd			m_label_free(new_sl);	/* OK if null */
994219089Spjd#else	/* !sun */
995219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
996219089Spjd			    "mlslabel is not supported on FreeBSD"));
997219089Spjd			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
998219089Spjd#endif	/* !sun */
999219089Spjd			goto error;
1000219089Spjd
1001219089Spjd		}
1002219089Spjd
1003168404Spjd		case ZFS_PROP_MOUNTPOINT:
1004185029Spjd		{
1005185029Spjd			namecheck_err_t why;
1006185029Spjd
1007168404Spjd			if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 ||
1008168404Spjd			    strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0)
1009168404Spjd				break;
1010168404Spjd
1011185029Spjd			if (mountpoint_namecheck(strval, &why)) {
1012185029Spjd				switch (why) {
1013185029Spjd				case NAME_ERR_LEADING_SLASH:
1014185029Spjd					zfs_error_aux(hdl,
1015185029Spjd					    dgettext(TEXT_DOMAIN,
1016185029Spjd					    "'%s' must be an absolute path, "
1017185029Spjd					    "'none', or 'legacy'"), propname);
1018185029Spjd					break;
1019185029Spjd				case NAME_ERR_TOOLONG:
1020185029Spjd					zfs_error_aux(hdl,
1021185029Spjd					    dgettext(TEXT_DOMAIN,
1022185029Spjd					    "component of '%s' is too long"),
1023185029Spjd					    propname);
1024185029Spjd					break;
1025185029Spjd				}
1026168404Spjd				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1027168404Spjd				goto error;
1028168404Spjd			}
1029185029Spjd		}
1030185029Spjd
1031168404Spjd			/*FALLTHRU*/
1032168404Spjd
1033185029Spjd		case ZFS_PROP_SHARESMB:
1034168404Spjd		case ZFS_PROP_SHARENFS:
1035168404Spjd			/*
1036185029Spjd			 * For the mountpoint and sharenfs or sharesmb
1037185029Spjd			 * properties, check if it can be set in a
1038185029Spjd			 * global/non-global zone based on
1039168404Spjd			 * the zoned property value:
1040168404Spjd			 *
1041168404Spjd			 *		global zone	    non-global zone
1042168404Spjd			 * --------------------------------------------------
1043168404Spjd			 * zoned=on	mountpoint (no)	    mountpoint (yes)
1044168404Spjd			 *		sharenfs (no)	    sharenfs (no)
1045185029Spjd			 *		sharesmb (no)	    sharesmb (no)
1046168404Spjd			 *
1047168404Spjd			 * zoned=off	mountpoint (yes)	N/A
1048168404Spjd			 *		sharenfs (yes)
1049185029Spjd			 *		sharesmb (yes)
1050168404Spjd			 */
1051168404Spjd			if (zoned) {
1052168404Spjd				if (getzoneid() == GLOBAL_ZONEID) {
1053168404Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1054168404Spjd					    "'%s' cannot be set on "
1055168404Spjd					    "dataset in a non-global zone"),
1056168404Spjd					    propname);
1057168404Spjd					(void) zfs_error(hdl, EZFS_ZONED,
1058168404Spjd					    errbuf);
1059168404Spjd					goto error;
1060185029Spjd				} else if (prop == ZFS_PROP_SHARENFS ||
1061185029Spjd				    prop == ZFS_PROP_SHARESMB) {
1062168404Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1063168404Spjd					    "'%s' cannot be set in "
1064168404Spjd					    "a non-global zone"), propname);
1065168404Spjd					(void) zfs_error(hdl, EZFS_ZONED,
1066168404Spjd					    errbuf);
1067168404Spjd					goto error;
1068168404Spjd				}
1069168404Spjd			} else if (getzoneid() != GLOBAL_ZONEID) {
1070168404Spjd				/*
1071168404Spjd				 * If zoned property is 'off', this must be in
1072209962Smm				 * a global zone. If not, something is wrong.
1073168404Spjd				 */
1074168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1075168404Spjd				    "'%s' cannot be set while dataset "
1076168404Spjd				    "'zoned' property is set"), propname);
1077168404Spjd				(void) zfs_error(hdl, EZFS_ZONED, errbuf);
1078168404Spjd				goto error;
1079168404Spjd			}
1080168404Spjd
1081168404Spjd			/*
1082185029Spjd			 * At this point, it is legitimate to set the
1083185029Spjd			 * property. Now we want to make sure that the
1084185029Spjd			 * property value is valid if it is sharenfs.
1085168404Spjd			 */
1086185029Spjd			if ((prop == ZFS_PROP_SHARENFS ||
1087185029Spjd			    prop == ZFS_PROP_SHARESMB) &&
1088185029Spjd			    strcmp(strval, "on") != 0 &&
1089185029Spjd			    strcmp(strval, "off") != 0) {
1090185029Spjd				zfs_share_proto_t proto;
1091168404Spjd
1092185029Spjd				if (prop == ZFS_PROP_SHARESMB)
1093185029Spjd					proto = PROTO_SMB;
1094185029Spjd				else
1095185029Spjd					proto = PROTO_NFS;
1096185029Spjd
1097185029Spjd				/*
1098185029Spjd				 * Must be an valid sharing protocol
1099185029Spjd				 * option string so init the libshare
1100185029Spjd				 * in order to enable the parser and
1101185029Spjd				 * then parse the options. We use the
1102185029Spjd				 * control API since we don't care about
1103185029Spjd				 * the current configuration and don't
1104185029Spjd				 * want the overhead of loading it
1105185029Spjd				 * until we actually do something.
1106185029Spjd				 */
1107185029Spjd
1108185029Spjd				if (zfs_init_libshare(hdl,
1109185029Spjd				    SA_INIT_CONTROL_API) != SA_OK) {
1110185029Spjd					/*
1111185029Spjd					 * An error occurred so we can't do
1112185029Spjd					 * anything
1113185029Spjd					 */
1114185029Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1115185029Spjd					    "'%s' cannot be set: problem "
1116185029Spjd					    "in share initialization"),
1117185029Spjd					    propname);
1118185029Spjd					(void) zfs_error(hdl, EZFS_BADPROP,
1119185029Spjd					    errbuf);
1120185029Spjd					goto error;
1121185029Spjd				}
1122185029Spjd
1123185029Spjd				if (zfs_parse_options(strval, proto) != SA_OK) {
1124185029Spjd					/*
1125185029Spjd					 * There was an error in parsing so
1126185029Spjd					 * deal with it by issuing an error
1127185029Spjd					 * message and leaving after
1128185029Spjd					 * uninitializing the the libshare
1129185029Spjd					 * interface.
1130185029Spjd					 */
1131185029Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1132185029Spjd					    "'%s' cannot be set to invalid "
1133185029Spjd					    "options"), propname);
1134185029Spjd					(void) zfs_error(hdl, EZFS_BADPROP,
1135185029Spjd					    errbuf);
1136185029Spjd					zfs_uninit_libshare(hdl);
1137185029Spjd					goto error;
1138185029Spjd				}
1139185029Spjd				zfs_uninit_libshare(hdl);
1140168404Spjd			}
1141185029Spjd
1142168404Spjd			break;
1143185029Spjd		case ZFS_PROP_UTF8ONLY:
1144185029Spjd			chosen_utf = (int)intval;
1145185029Spjd			break;
1146185029Spjd		case ZFS_PROP_NORMALIZE:
1147185029Spjd			chosen_normal = (int)intval;
1148185029Spjd			break;
1149168404Spjd		}
1150168404Spjd
1151168404Spjd		/*
1152168404Spjd		 * For changes to existing volumes, we have some additional
1153168404Spjd		 * checks to enforce.
1154168404Spjd		 */
1155168404Spjd		if (type == ZFS_TYPE_VOLUME && zhp != NULL) {
1156168404Spjd			uint64_t volsize = zfs_prop_get_int(zhp,
1157168404Spjd			    ZFS_PROP_VOLSIZE);
1158168404Spjd			uint64_t blocksize = zfs_prop_get_int(zhp,
1159168404Spjd			    ZFS_PROP_VOLBLOCKSIZE);
1160168404Spjd			char buf[64];
1161168404Spjd
1162168404Spjd			switch (prop) {
1163168404Spjd			case ZFS_PROP_RESERVATION:
1164185029Spjd			case ZFS_PROP_REFRESERVATION:
1165168404Spjd				if (intval > volsize) {
1166168404Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1167168404Spjd					    "'%s' is greater than current "
1168168404Spjd					    "volume size"), propname);
1169168404Spjd					(void) zfs_error(hdl, EZFS_BADPROP,
1170168404Spjd					    errbuf);
1171168404Spjd					goto error;
1172168404Spjd				}
1173168404Spjd				break;
1174168404Spjd
1175168404Spjd			case ZFS_PROP_VOLSIZE:
1176168404Spjd				if (intval % blocksize != 0) {
1177168404Spjd					zfs_nicenum(blocksize, buf,
1178168404Spjd					    sizeof (buf));
1179168404Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1180168404Spjd					    "'%s' must be a multiple of "
1181168404Spjd					    "volume block size (%s)"),
1182168404Spjd					    propname, buf);
1183168404Spjd					(void) zfs_error(hdl, EZFS_BADPROP,
1184168404Spjd					    errbuf);
1185168404Spjd					goto error;
1186168404Spjd				}
1187168404Spjd
1188168404Spjd				if (intval == 0) {
1189168404Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1190168404Spjd					    "'%s' cannot be zero"),
1191168404Spjd					    propname);
1192168404Spjd					(void) zfs_error(hdl, EZFS_BADPROP,
1193168404Spjd					    errbuf);
1194168404Spjd					goto error;
1195168404Spjd				}
1196168404Spjd				break;
1197168404Spjd			}
1198168404Spjd		}
1199168404Spjd	}
1200168404Spjd
1201168404Spjd	/*
1202185029Spjd	 * If normalization was chosen, but no UTF8 choice was made,
1203185029Spjd	 * enforce rejection of non-UTF8 names.
1204185029Spjd	 *
1205185029Spjd	 * If normalization was chosen, but rejecting non-UTF8 names
1206185029Spjd	 * was explicitly not chosen, it is an error.
1207185029Spjd	 */
1208185029Spjd	if (chosen_normal > 0 && chosen_utf < 0) {
1209185029Spjd		if (nvlist_add_uint64(ret,
1210185029Spjd		    zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) {
1211185029Spjd			(void) no_memory(hdl);
1212185029Spjd			goto error;
1213185029Spjd		}
1214185029Spjd	} else if (chosen_normal > 0 && chosen_utf == 0) {
1215185029Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1216185029Spjd		    "'%s' must be set 'on' if normalization chosen"),
1217185029Spjd		    zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
1218185029Spjd		(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1219185029Spjd		goto error;
1220185029Spjd	}
1221219089Spjd	return (ret);
1222185029Spjd
1223219089Spjderror:
1224219089Spjd	nvlist_free(ret);
1225219089Spjd	return (NULL);
1226219089Spjd}
1227219089Spjd
1228219089Spjdint
1229219089Spjdzfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl)
1230219089Spjd{
1231219089Spjd	uint64_t old_volsize;
1232219089Spjd	uint64_t new_volsize;
1233219089Spjd	uint64_t old_reservation;
1234219089Spjd	uint64_t new_reservation;
1235219089Spjd	zfs_prop_t resv_prop;
1236219089Spjd
1237185029Spjd	/*
1238168404Spjd	 * If this is an existing volume, and someone is setting the volsize,
1239168404Spjd	 * make sure that it matches the reservation, or add it if necessary.
1240168404Spjd	 */
1241219089Spjd	old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
1242219089Spjd	if (zfs_which_resv_prop(zhp, &resv_prop) < 0)
1243219089Spjd		return (-1);
1244219089Spjd	old_reservation = zfs_prop_get_int(zhp, resv_prop);
1245219089Spjd	if ((zvol_volsize_to_reservation(old_volsize, zhp->zfs_props) !=
1246219089Spjd	    old_reservation) || nvlist_lookup_uint64(nvl,
1247219089Spjd	    zfs_prop_to_name(resv_prop), &new_reservation) != ENOENT) {
1248219089Spjd		return (0);
1249219089Spjd	}
1250219089Spjd	if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE),
1251219089Spjd	    &new_volsize) != 0)
1252219089Spjd		return (-1);
1253219089Spjd	new_reservation = zvol_volsize_to_reservation(new_volsize,
1254219089Spjd	    zhp->zfs_props);
1255219089Spjd	if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop),
1256219089Spjd	    new_reservation) != 0) {
1257219089Spjd		(void) no_memory(zhp->zfs_hdl);
1258219089Spjd		return (-1);
1259219089Spjd	}
1260219089Spjd	return (1);
1261219089Spjd}
1262168404Spjd
1263219089Spjdvoid
1264219089Spjdzfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err,
1265219089Spjd    char *errbuf)
1266219089Spjd{
1267219089Spjd	switch (err) {
1268185029Spjd
1269219089Spjd	case ENOSPC:
1270219089Spjd		/*
1271219089Spjd		 * For quotas and reservations, ENOSPC indicates
1272219089Spjd		 * something different; setting a quota or reservation
1273219089Spjd		 * doesn't use any disk space.
1274219089Spjd		 */
1275219089Spjd		switch (prop) {
1276219089Spjd		case ZFS_PROP_QUOTA:
1277219089Spjd		case ZFS_PROP_REFQUOTA:
1278219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1279219089Spjd			    "size is less than current used or "
1280219089Spjd			    "reserved space"));
1281219089Spjd			(void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
1282219089Spjd			break;
1283219089Spjd
1284219089Spjd		case ZFS_PROP_RESERVATION:
1285219089Spjd		case ZFS_PROP_REFRESERVATION:
1286219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1287219089Spjd			    "size is greater than available space"));
1288219089Spjd			(void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
1289219089Spjd			break;
1290219089Spjd
1291219089Spjd		default:
1292219089Spjd			(void) zfs_standard_error(hdl, err, errbuf);
1293219089Spjd			break;
1294168404Spjd		}
1295219089Spjd		break;
1296219089Spjd
1297219089Spjd	case EBUSY:
1298219089Spjd		(void) zfs_standard_error(hdl, EBUSY, errbuf);
1299219089Spjd		break;
1300219089Spjd
1301219089Spjd	case EROFS:
1302219089Spjd		(void) zfs_error(hdl, EZFS_DSREADONLY, errbuf);
1303219089Spjd		break;
1304219089Spjd
1305219089Spjd	case ENOTSUP:
1306219089Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1307219089Spjd		    "pool and or dataset must be upgraded to set this "
1308219089Spjd		    "property or value"));
1309219089Spjd		(void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
1310219089Spjd		break;
1311219089Spjd
1312219089Spjd	case ERANGE:
1313219089Spjd		if (prop == ZFS_PROP_COMPRESSION) {
1314219089Spjd			(void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1315219089Spjd			    "property setting is not allowed on "
1316219089Spjd			    "bootable datasets"));
1317219089Spjd			(void) zfs_error(hdl, EZFS_NOTSUP, errbuf);
1318219089Spjd		} else {
1319219089Spjd			(void) zfs_standard_error(hdl, err, errbuf);
1320219089Spjd		}
1321219089Spjd		break;
1322219089Spjd
1323219089Spjd	case EINVAL:
1324219089Spjd		if (prop == ZPROP_INVAL) {
1325219089Spjd			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1326219089Spjd		} else {
1327219089Spjd			(void) zfs_standard_error(hdl, err, errbuf);
1328219089Spjd		}
1329219089Spjd		break;
1330219089Spjd
1331219089Spjd	case EOVERFLOW:
1332219089Spjd		/*
1333219089Spjd		 * This platform can't address a volume this big.
1334219089Spjd		 */
1335219089Spjd#ifdef _ILP32
1336219089Spjd		if (prop == ZFS_PROP_VOLSIZE) {
1337219089Spjd			(void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf);
1338219089Spjd			break;
1339219089Spjd		}
1340219089Spjd#endif
1341219089Spjd		/* FALLTHROUGH */
1342219089Spjd	default:
1343219089Spjd		(void) zfs_standard_error(hdl, err, errbuf);
1344168404Spjd	}
1345168404Spjd}
1346168404Spjd
1347168404Spjd/*
1348168404Spjd * Given a property name and value, set the property for the given dataset.
1349168404Spjd */
1350168404Spjdint
1351168404Spjdzfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval)
1352168404Spjd{
1353168404Spjd	zfs_cmd_t zc = { 0 };
1354168404Spjd	int ret = -1;
1355168404Spjd	prop_changelist_t *cl = NULL;
1356168404Spjd	char errbuf[1024];
1357168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
1358168404Spjd	nvlist_t *nvl = NULL, *realprops;
1359168404Spjd	zfs_prop_t prop;
1360185029Spjd	boolean_t do_prefix;
1361185029Spjd	uint64_t idx;
1362219089Spjd	int added_resv;
1363168404Spjd
1364168404Spjd	(void) snprintf(errbuf, sizeof (errbuf),
1365168404Spjd	    dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
1366168404Spjd	    zhp->zfs_name);
1367168404Spjd
1368168404Spjd	if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 ||
1369168404Spjd	    nvlist_add_string(nvl, propname, propval) != 0) {
1370168404Spjd		(void) no_memory(hdl);
1371168404Spjd		goto error;
1372168404Spjd	}
1373168404Spjd
1374185029Spjd	if ((realprops = zfs_valid_proplist(hdl, zhp->zfs_type, nvl,
1375168404Spjd	    zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, errbuf)) == NULL)
1376168404Spjd		goto error;
1377185029Spjd
1378168404Spjd	nvlist_free(nvl);
1379168404Spjd	nvl = realprops;
1380168404Spjd
1381168404Spjd	prop = zfs_name_to_prop(propname);
1382168404Spjd
1383168404Spjd	/* We don't support those properties on FreeBSD. */
1384168404Spjd	switch (prop) {
1385197867Strasz	case ZFS_PROP_DEVICES:
1386168404Spjd	case ZFS_PROP_ISCSIOPTIONS:
1387197867Strasz	case ZFS_PROP_XATTR:
1388197867Strasz	case ZFS_PROP_VSCAN:
1389197867Strasz	case ZFS_PROP_NBMAND:
1390219089Spjd	case ZFS_PROP_MLSLABEL:
1391168404Spjd		(void) snprintf(errbuf, sizeof (errbuf),
1392168404Spjd		    "property '%s' not supported on FreeBSD", propname);
1393168404Spjd		ret = zfs_error(hdl, EZFS_PERM, errbuf);
1394168404Spjd		goto error;
1395168404Spjd	}
1396168404Spjd
1397219089Spjd	if (prop == ZFS_PROP_VOLSIZE) {
1398219089Spjd		if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1)
1399219089Spjd			goto error;
1400219089Spjd	}
1401219089Spjd
1402185029Spjd	if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL)
1403168404Spjd		goto error;
1404168404Spjd
1405168404Spjd	if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) {
1406168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1407168404Spjd		    "child dataset with inherited mountpoint is used "
1408168404Spjd		    "in a non-global zone"));
1409168404Spjd		ret = zfs_error(hdl, EZFS_ZONED, errbuf);
1410168404Spjd		goto error;
1411168404Spjd	}
1412168404Spjd
1413185029Spjd	/*
1414185029Spjd	 * If the dataset's canmount property is being set to noauto,
1415185029Spjd	 * then we want to prevent unmounting & remounting it.
1416185029Spjd	 */
1417185029Spjd	do_prefix = !((prop == ZFS_PROP_CANMOUNT) &&
1418185029Spjd	    (zprop_string_to_index(prop, propval, &idx,
1419185029Spjd	    ZFS_TYPE_DATASET) == 0) && (idx == ZFS_CANMOUNT_NOAUTO));
1420185029Spjd
1421185029Spjd	if (do_prefix && (ret = changelist_prefix(cl)) != 0)
1422168404Spjd		goto error;
1423168404Spjd
1424168404Spjd	/*
1425168404Spjd	 * Execute the corresponding ioctl() to set this property.
1426168404Spjd	 */
1427168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1428168404Spjd
1429185029Spjd	if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0)
1430168404Spjd		goto error;
1431168404Spjd
1432185029Spjd	ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc);
1433209962Smm
1434168404Spjd	if (ret != 0) {
1435219089Spjd		zfs_setprop_error(hdl, prop, errno, errbuf);
1436219089Spjd		if (added_resv && errno == ENOSPC) {
1437219089Spjd			/* clean up the volsize property we tried to set */
1438219089Spjd			uint64_t old_volsize = zfs_prop_get_int(zhp,
1439219089Spjd			    ZFS_PROP_VOLSIZE);
1440219089Spjd			nvlist_free(nvl);
1441219089Spjd			zcmd_free_nvlists(&zc);
1442219089Spjd			if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
1443219089Spjd				goto error;
1444219089Spjd			if (nvlist_add_uint64(nvl,
1445219089Spjd			    zfs_prop_to_name(ZFS_PROP_VOLSIZE),
1446219089Spjd			    old_volsize) != 0)
1447219089Spjd				goto error;
1448219089Spjd			if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0)
1449219089Spjd				goto error;
1450219089Spjd			(void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc);
1451168404Spjd		}
1452168404Spjd	} else {
1453185029Spjd		if (do_prefix)
1454185029Spjd			ret = changelist_postfix(cl);
1455185029Spjd
1456168404Spjd		/*
1457168404Spjd		 * Refresh the statistics so the new property value
1458168404Spjd		 * is reflected.
1459168404Spjd		 */
1460185029Spjd		if (ret == 0)
1461168404Spjd			(void) get_stats(zhp);
1462168404Spjd	}
1463168404Spjd
1464168404Spjderror:
1465168404Spjd	nvlist_free(nvl);
1466168404Spjd	zcmd_free_nvlists(&zc);
1467168404Spjd	if (cl)
1468168404Spjd		changelist_free(cl);
1469168404Spjd	return (ret);
1470168404Spjd}
1471168404Spjd
1472168404Spjd/*
1473219089Spjd * Given a property, inherit the value from the parent dataset, or if received
1474219089Spjd * is TRUE, revert to the received value, if any.
1475168404Spjd */
1476168404Spjdint
1477219089Spjdzfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received)
1478168404Spjd{
1479168404Spjd	zfs_cmd_t zc = { 0 };
1480168404Spjd	int ret;
1481168404Spjd	prop_changelist_t *cl;
1482168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
1483168404Spjd	char errbuf[1024];
1484168404Spjd	zfs_prop_t prop;
1485168404Spjd
1486168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
1487168404Spjd	    "cannot inherit %s for '%s'"), propname, zhp->zfs_name);
1488168404Spjd
1489219089Spjd	zc.zc_cookie = received;
1490185029Spjd	if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) {
1491168404Spjd		/*
1492168404Spjd		 * For user properties, the amount of work we have to do is very
1493168404Spjd		 * small, so just do it here.
1494168404Spjd		 */
1495168404Spjd		if (!zfs_prop_user(propname)) {
1496168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1497168404Spjd			    "invalid property"));
1498168404Spjd			return (zfs_error(hdl, EZFS_BADPROP, errbuf));
1499168404Spjd		}
1500168404Spjd
1501168404Spjd		(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1502168404Spjd		(void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value));
1503168404Spjd
1504185029Spjd		if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0)
1505168404Spjd			return (zfs_standard_error(hdl, errno, errbuf));
1506168404Spjd
1507168404Spjd		return (0);
1508168404Spjd	}
1509168404Spjd
1510168404Spjd	/*
1511168404Spjd	 * Verify that this property is inheritable.
1512168404Spjd	 */
1513168404Spjd	if (zfs_prop_readonly(prop))
1514168404Spjd		return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf));
1515168404Spjd
1516219089Spjd	if (!zfs_prop_inheritable(prop) && !received)
1517168404Spjd		return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf));
1518168404Spjd
1519168404Spjd	/*
1520168404Spjd	 * Check to see if the value applies to this type
1521168404Spjd	 */
1522168404Spjd	if (!zfs_prop_valid_for_type(prop, zhp->zfs_type))
1523168404Spjd		return (zfs_error(hdl, EZFS_PROPTYPE, errbuf));
1524168404Spjd
1525168404Spjd	/*
1526219089Spjd	 * Normalize the name, to get rid of shorthand abbreviations.
1527168404Spjd	 */
1528168404Spjd	propname = zfs_prop_to_name(prop);
1529168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1530168404Spjd	(void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value));
1531168404Spjd
1532168404Spjd	if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID &&
1533168404Spjd	    zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) {
1534168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1535168404Spjd		    "dataset is used in a non-global zone"));
1536168404Spjd		return (zfs_error(hdl, EZFS_ZONED, errbuf));
1537168404Spjd	}
1538168404Spjd
1539168404Spjd	/*
1540168404Spjd	 * Determine datasets which will be affected by this change, if any.
1541168404Spjd	 */
1542185029Spjd	if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL)
1543168404Spjd		return (-1);
1544168404Spjd
1545168404Spjd	if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) {
1546168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1547168404Spjd		    "child dataset with inherited mountpoint is used "
1548168404Spjd		    "in a non-global zone"));
1549168404Spjd		ret = zfs_error(hdl, EZFS_ZONED, errbuf);
1550168404Spjd		goto error;
1551168404Spjd	}
1552168404Spjd
1553168404Spjd	if ((ret = changelist_prefix(cl)) != 0)
1554168404Spjd		goto error;
1555168404Spjd
1556185029Spjd	if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) {
1557168404Spjd		return (zfs_standard_error(hdl, errno, errbuf));
1558168404Spjd	} else {
1559168404Spjd
1560168404Spjd		if ((ret = changelist_postfix(cl)) != 0)
1561168404Spjd			goto error;
1562168404Spjd
1563168404Spjd		/*
1564168404Spjd		 * Refresh the statistics so the new property is reflected.
1565168404Spjd		 */
1566168404Spjd		(void) get_stats(zhp);
1567168404Spjd	}
1568168404Spjd
1569168404Spjderror:
1570168404Spjd	changelist_free(cl);
1571168404Spjd	return (ret);
1572168404Spjd}
1573168404Spjd
1574168404Spjd/*
1575168404Spjd * True DSL properties are stored in an nvlist.  The following two functions
1576168404Spjd * extract them appropriately.
1577168404Spjd */
1578168404Spjdstatic uint64_t
1579168404Spjdgetprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source)
1580168404Spjd{
1581168404Spjd	nvlist_t *nv;
1582168404Spjd	uint64_t value;
1583168404Spjd
1584168404Spjd	*source = NULL;
1585168404Spjd	if (nvlist_lookup_nvlist(zhp->zfs_props,
1586168404Spjd	    zfs_prop_to_name(prop), &nv) == 0) {
1587185029Spjd		verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0);
1588185029Spjd		(void) nvlist_lookup_string(nv, ZPROP_SOURCE, source);
1589168404Spjd	} else {
1590205198Sdelphij		verify(!zhp->zfs_props_table ||
1591205198Sdelphij		    zhp->zfs_props_table[prop] == B_TRUE);
1592168404Spjd		value = zfs_prop_default_numeric(prop);
1593168404Spjd		*source = "";
1594168404Spjd	}
1595168404Spjd
1596168404Spjd	return (value);
1597168404Spjd}
1598168404Spjd
1599168404Spjdstatic char *
1600168404Spjdgetprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source)
1601168404Spjd{
1602168404Spjd	nvlist_t *nv;
1603168404Spjd	char *value;
1604168404Spjd
1605168404Spjd	*source = NULL;
1606168404Spjd	if (nvlist_lookup_nvlist(zhp->zfs_props,
1607168404Spjd	    zfs_prop_to_name(prop), &nv) == 0) {
1608185029Spjd		verify(nvlist_lookup_string(nv, ZPROP_VALUE, &value) == 0);
1609185029Spjd		(void) nvlist_lookup_string(nv, ZPROP_SOURCE, source);
1610168404Spjd	} else {
1611205198Sdelphij		verify(!zhp->zfs_props_table ||
1612205198Sdelphij		    zhp->zfs_props_table[prop] == B_TRUE);
1613168404Spjd		if ((value = (char *)zfs_prop_default_string(prop)) == NULL)
1614168404Spjd			value = "";
1615168404Spjd		*source = "";
1616168404Spjd	}
1617168404Spjd
1618168404Spjd	return (value);
1619168404Spjd}
1620168404Spjd
1621219089Spjdstatic boolean_t
1622219089Spjdzfs_is_recvd_props_mode(zfs_handle_t *zhp)
1623219089Spjd{
1624219089Spjd	return (zhp->zfs_props == zhp->zfs_recvd_props);
1625219089Spjd}
1626219089Spjd
1627219089Spjdstatic void
1628219089Spjdzfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie)
1629219089Spjd{
1630219089Spjd	*cookie = (uint64_t)(uintptr_t)zhp->zfs_props;
1631219089Spjd	zhp->zfs_props = zhp->zfs_recvd_props;
1632219089Spjd}
1633219089Spjd
1634219089Spjdstatic void
1635219089Spjdzfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie)
1636219089Spjd{
1637219089Spjd	zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie;
1638219089Spjd	*cookie = 0;
1639219089Spjd}
1640219089Spjd
1641168404Spjd/*
1642168404Spjd * Internal function for getting a numeric property.  Both zfs_prop_get() and
1643168404Spjd * zfs_prop_get_int() are built using this interface.
1644168404Spjd *
1645168404Spjd * Certain properties can be overridden using 'mount -o'.  In this case, scan
1646168404Spjd * the contents of the /etc/mnttab entry, searching for the appropriate options.
1647168404Spjd * If they differ from the on-disk values, report the current values and mark
1648168404Spjd * the source "temporary".
1649168404Spjd */
1650168404Spjdstatic int
1651185029Spjdget_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src,
1652168404Spjd    char **source, uint64_t *val)
1653168404Spjd{
1654185029Spjd	zfs_cmd_t zc = { 0 };
1655185029Spjd	nvlist_t *zplprops = NULL;
1656168404Spjd	struct mnttab mnt;
1657168404Spjd	char *mntopt_on = NULL;
1658168404Spjd	char *mntopt_off = NULL;
1659219089Spjd	boolean_t received = zfs_is_recvd_props_mode(zhp);
1660168404Spjd
1661168404Spjd	*source = NULL;
1662168404Spjd
1663168404Spjd	switch (prop) {
1664168404Spjd	case ZFS_PROP_ATIME:
1665168404Spjd		mntopt_on = MNTOPT_ATIME;
1666168404Spjd		mntopt_off = MNTOPT_NOATIME;
1667168404Spjd		break;
1668168404Spjd
1669168404Spjd	case ZFS_PROP_DEVICES:
1670168404Spjd		mntopt_on = MNTOPT_DEVICES;
1671168404Spjd		mntopt_off = MNTOPT_NODEVICES;
1672168404Spjd		break;
1673168404Spjd
1674168404Spjd	case ZFS_PROP_EXEC:
1675168404Spjd		mntopt_on = MNTOPT_EXEC;
1676168404Spjd		mntopt_off = MNTOPT_NOEXEC;
1677168404Spjd		break;
1678168404Spjd
1679168404Spjd	case ZFS_PROP_READONLY:
1680168404Spjd		mntopt_on = MNTOPT_RO;
1681168404Spjd		mntopt_off = MNTOPT_RW;
1682168404Spjd		break;
1683168404Spjd
1684168404Spjd	case ZFS_PROP_SETUID:
1685168404Spjd		mntopt_on = MNTOPT_SETUID;
1686168404Spjd		mntopt_off = MNTOPT_NOSETUID;
1687168404Spjd		break;
1688168404Spjd
1689168404Spjd	case ZFS_PROP_XATTR:
1690168404Spjd		mntopt_on = MNTOPT_XATTR;
1691168404Spjd		mntopt_off = MNTOPT_NOXATTR;
1692168404Spjd		break;
1693185029Spjd
1694185029Spjd	case ZFS_PROP_NBMAND:
1695185029Spjd		mntopt_on = MNTOPT_NBMAND;
1696185029Spjd		mntopt_off = MNTOPT_NONBMAND;
1697185029Spjd		break;
1698168404Spjd	}
1699168404Spjd
1700168404Spjd	/*
1701168404Spjd	 * Because looking up the mount options is potentially expensive
1702168404Spjd	 * (iterating over all of /etc/mnttab), we defer its calculation until
1703168404Spjd	 * we're looking up a property which requires its presence.
1704168404Spjd	 */
1705168404Spjd	if (!zhp->zfs_mntcheck &&
1706168404Spjd	    (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) {
1707209962Smm		libzfs_handle_t *hdl = zhp->zfs_hdl;
1708209962Smm		struct mnttab entry;
1709168404Spjd
1710209962Smm		if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) {
1711209962Smm			zhp->zfs_mntopts = zfs_strdup(hdl,
1712168404Spjd			    entry.mnt_mntopts);
1713168404Spjd			if (zhp->zfs_mntopts == NULL)
1714168404Spjd				return (-1);
1715168404Spjd		}
1716168404Spjd
1717168404Spjd		zhp->zfs_mntcheck = B_TRUE;
1718168404Spjd	}
1719168404Spjd
1720168404Spjd	if (zhp->zfs_mntopts == NULL)
1721168404Spjd		mnt.mnt_mntopts = "";
1722168404Spjd	else
1723168404Spjd		mnt.mnt_mntopts = zhp->zfs_mntopts;
1724168404Spjd
1725168404Spjd	switch (prop) {
1726168404Spjd	case ZFS_PROP_ATIME:
1727168404Spjd	case ZFS_PROP_DEVICES:
1728168404Spjd	case ZFS_PROP_EXEC:
1729168404Spjd	case ZFS_PROP_READONLY:
1730168404Spjd	case ZFS_PROP_SETUID:
1731168404Spjd	case ZFS_PROP_XATTR:
1732185029Spjd	case ZFS_PROP_NBMAND:
1733168404Spjd		*val = getprop_uint64(zhp, prop, source);
1734168404Spjd
1735219089Spjd		if (received)
1736219089Spjd			break;
1737219089Spjd
1738168404Spjd		if (hasmntopt(&mnt, mntopt_on) && !*val) {
1739168404Spjd			*val = B_TRUE;
1740168404Spjd			if (src)
1741185029Spjd				*src = ZPROP_SRC_TEMPORARY;
1742168404Spjd		} else if (hasmntopt(&mnt, mntopt_off) && *val) {
1743168404Spjd			*val = B_FALSE;
1744168404Spjd			if (src)
1745185029Spjd				*src = ZPROP_SRC_TEMPORARY;
1746168404Spjd		}
1747168404Spjd		break;
1748168404Spjd
1749168404Spjd	case ZFS_PROP_CANMOUNT:
1750219089Spjd	case ZFS_PROP_VOLSIZE:
1751168404Spjd	case ZFS_PROP_QUOTA:
1752185029Spjd	case ZFS_PROP_REFQUOTA:
1753168404Spjd	case ZFS_PROP_RESERVATION:
1754185029Spjd	case ZFS_PROP_REFRESERVATION:
1755168404Spjd		*val = getprop_uint64(zhp, prop, source);
1756219089Spjd
1757219089Spjd		if (*source == NULL) {
1758219089Spjd			/* not default, must be local */
1759168404Spjd			*source = zhp->zfs_name;
1760219089Spjd		}
1761168404Spjd		break;
1762168404Spjd
1763168404Spjd	case ZFS_PROP_MOUNTED:
1764168404Spjd		*val = (zhp->zfs_mntopts != NULL);
1765168404Spjd		break;
1766168404Spjd
1767168404Spjd	case ZFS_PROP_NUMCLONES:
1768168404Spjd		*val = zhp->zfs_dmustats.dds_num_clones;
1769168404Spjd		break;
1770168404Spjd
1771185029Spjd	case ZFS_PROP_VERSION:
1772185029Spjd	case ZFS_PROP_NORMALIZE:
1773185029Spjd	case ZFS_PROP_UTF8ONLY:
1774185029Spjd	case ZFS_PROP_CASE:
1775185029Spjd		if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) ||
1776185029Spjd		    zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0)
1777185029Spjd			return (-1);
1778185029Spjd		(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1779185029Spjd		if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) {
1780185029Spjd			zcmd_free_nvlists(&zc);
1781219089Spjd			return (-1);
1782185029Spjd		}
1783185029Spjd		if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 ||
1784185029Spjd		    nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop),
1785185029Spjd		    val) != 0) {
1786185029Spjd			zcmd_free_nvlists(&zc);
1787219089Spjd			return (-1);
1788185029Spjd		}
1789185029Spjd		if (zplprops)
1790185029Spjd			nvlist_free(zplprops);
1791185029Spjd		zcmd_free_nvlists(&zc);
1792185029Spjd		break;
1793185029Spjd
1794168404Spjd	default:
1795185029Spjd		switch (zfs_prop_get_type(prop)) {
1796185029Spjd		case PROP_TYPE_NUMBER:
1797185029Spjd		case PROP_TYPE_INDEX:
1798185029Spjd			*val = getprop_uint64(zhp, prop, source);
1799185029Spjd			/*
1800209962Smm			 * If we tried to use a default value for a
1801185029Spjd			 * readonly property, it means that it was not
1802219089Spjd			 * present.
1803185029Spjd			 */
1804185029Spjd			if (zfs_prop_readonly(prop) &&
1805219089Spjd			    *source != NULL && (*source)[0] == '\0') {
1806219089Spjd				*source = NULL;
1807185029Spjd			}
1808185029Spjd			break;
1809185029Spjd
1810185029Spjd		case PROP_TYPE_STRING:
1811185029Spjd		default:
1812185029Spjd			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
1813185029Spjd			    "cannot get non-numeric property"));
1814185029Spjd			return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP,
1815185029Spjd			    dgettext(TEXT_DOMAIN, "internal error")));
1816185029Spjd		}
1817168404Spjd	}
1818168404Spjd
1819168404Spjd	return (0);
1820168404Spjd}
1821168404Spjd
1822168404Spjd/*
1823168404Spjd * Calculate the source type, given the raw source string.
1824168404Spjd */
1825168404Spjdstatic void
1826185029Spjdget_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source,
1827168404Spjd    char *statbuf, size_t statlen)
1828168404Spjd{
1829185029Spjd	if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY)
1830168404Spjd		return;
1831168404Spjd
1832168404Spjd	if (source == NULL) {
1833185029Spjd		*srctype = ZPROP_SRC_NONE;
1834168404Spjd	} else if (source[0] == '\0') {
1835185029Spjd		*srctype = ZPROP_SRC_DEFAULT;
1836219089Spjd	} else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) {
1837219089Spjd		*srctype = ZPROP_SRC_RECEIVED;
1838168404Spjd	} else {
1839168404Spjd		if (strcmp(source, zhp->zfs_name) == 0) {
1840185029Spjd			*srctype = ZPROP_SRC_LOCAL;
1841168404Spjd		} else {
1842168404Spjd			(void) strlcpy(statbuf, source, statlen);
1843185029Spjd			*srctype = ZPROP_SRC_INHERITED;
1844168404Spjd		}
1845168404Spjd	}
1846168404Spjd
1847168404Spjd}
1848168404Spjd
1849219089Spjdint
1850219089Spjdzfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf,
1851219089Spjd    size_t proplen, boolean_t literal)
1852219089Spjd{
1853219089Spjd	zfs_prop_t prop;
1854219089Spjd	int err = 0;
1855219089Spjd
1856219089Spjd	if (zhp->zfs_recvd_props == NULL)
1857219089Spjd		if (get_recvd_props_ioctl(zhp) != 0)
1858219089Spjd			return (-1);
1859219089Spjd
1860219089Spjd	prop = zfs_name_to_prop(propname);
1861219089Spjd
1862219089Spjd	if (prop != ZPROP_INVAL) {
1863219089Spjd		uint64_t cookie;
1864219089Spjd		if (!nvlist_exists(zhp->zfs_recvd_props, propname))
1865219089Spjd			return (-1);
1866219089Spjd		zfs_set_recvd_props_mode(zhp, &cookie);
1867219089Spjd		err = zfs_prop_get(zhp, prop, propbuf, proplen,
1868219089Spjd		    NULL, NULL, 0, literal);
1869219089Spjd		zfs_unset_recvd_props_mode(zhp, &cookie);
1870219089Spjd	} else if (zfs_prop_userquota(propname)) {
1871219089Spjd		return (-1);
1872219089Spjd	} else {
1873219089Spjd		nvlist_t *propval;
1874219089Spjd		char *recvdval;
1875219089Spjd		if (nvlist_lookup_nvlist(zhp->zfs_recvd_props,
1876219089Spjd		    propname, &propval) != 0)
1877219089Spjd			return (-1);
1878219089Spjd		verify(nvlist_lookup_string(propval, ZPROP_VALUE,
1879219089Spjd		    &recvdval) == 0);
1880219089Spjd		(void) strlcpy(propbuf, recvdval, proplen);
1881219089Spjd	}
1882219089Spjd
1883219089Spjd	return (err == 0 ? 0 : -1);
1884219089Spjd}
1885219089Spjd
1886168404Spjd/*
1887168404Spjd * Retrieve a property from the given object.  If 'literal' is specified, then
1888168404Spjd * numbers are left as exact values.  Otherwise, numbers are converted to a
1889168404Spjd * human-readable form.
1890168404Spjd *
1891168404Spjd * Returns 0 on success, or -1 on error.
1892168404Spjd */
1893168404Spjdint
1894168404Spjdzfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen,
1895185029Spjd    zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal)
1896168404Spjd{
1897168404Spjd	char *source = NULL;
1898168404Spjd	uint64_t val;
1899168404Spjd	char *str;
1900168404Spjd	const char *strval;
1901219089Spjd	boolean_t received = zfs_is_recvd_props_mode(zhp);
1902168404Spjd
1903168404Spjd	/*
1904168404Spjd	 * Check to see if this property applies to our object
1905168404Spjd	 */
1906168404Spjd	if (!zfs_prop_valid_for_type(prop, zhp->zfs_type))
1907168404Spjd		return (-1);
1908168404Spjd
1909219089Spjd	if (received && zfs_prop_readonly(prop))
1910219089Spjd		return (-1);
1911219089Spjd
1912168404Spjd	if (src)
1913185029Spjd		*src = ZPROP_SRC_NONE;
1914168404Spjd
1915168404Spjd	switch (prop) {
1916168404Spjd	case ZFS_PROP_CREATION:
1917168404Spjd		/*
1918168404Spjd		 * 'creation' is a time_t stored in the statistics.  We convert
1919168404Spjd		 * this into a string unless 'literal' is specified.
1920168404Spjd		 */
1921168404Spjd		{
1922168404Spjd			val = getprop_uint64(zhp, prop, &source);
1923168404Spjd			time_t time = (time_t)val;
1924168404Spjd			struct tm t;
1925168404Spjd
1926168404Spjd			if (literal ||
1927168404Spjd			    localtime_r(&time, &t) == NULL ||
1928168404Spjd			    strftime(propbuf, proplen, "%a %b %e %k:%M %Y",
1929168404Spjd			    &t) == 0)
1930168404Spjd				(void) snprintf(propbuf, proplen, "%llu", val);
1931168404Spjd		}
1932168404Spjd		break;
1933168404Spjd
1934168404Spjd	case ZFS_PROP_MOUNTPOINT:
1935168404Spjd		/*
1936168404Spjd		 * Getting the precise mountpoint can be tricky.
1937168404Spjd		 *
1938168404Spjd		 *  - for 'none' or 'legacy', return those values.
1939168404Spjd		 *  - for inherited mountpoints, we want to take everything
1940168404Spjd		 *    after our ancestor and append it to the inherited value.
1941168404Spjd		 *
1942168404Spjd		 * If the pool has an alternate root, we want to prepend that
1943168404Spjd		 * root to any values we return.
1944168404Spjd		 */
1945185029Spjd
1946168404Spjd		str = getprop_string(zhp, prop, &source);
1947168404Spjd
1948185029Spjd		if (str[0] == '/') {
1949185029Spjd			char buf[MAXPATHLEN];
1950185029Spjd			char *root = buf;
1951219089Spjd			const char *relpath;
1952168404Spjd
1953219089Spjd			/*
1954219089Spjd			 * If we inherit the mountpoint, even from a dataset
1955219089Spjd			 * with a received value, the source will be the path of
1956219089Spjd			 * the dataset we inherit from. If source is
1957219089Spjd			 * ZPROP_SOURCE_VAL_RECVD, the received value is not
1958219089Spjd			 * inherited.
1959219089Spjd			 */
1960219089Spjd			if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) {
1961219089Spjd				relpath = "";
1962219089Spjd			} else {
1963219089Spjd				relpath = zhp->zfs_name + strlen(source);
1964219089Spjd				if (relpath[0] == '/')
1965219089Spjd					relpath++;
1966219089Spjd			}
1967185029Spjd
1968185029Spjd			if ((zpool_get_prop(zhp->zpool_hdl,
1969185029Spjd			    ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL)) ||
1970185029Spjd			    (strcmp(root, "-") == 0))
1971185029Spjd				root[0] = '\0';
1972185029Spjd			/*
1973185029Spjd			 * Special case an alternate root of '/'. This will
1974185029Spjd			 * avoid having multiple leading slashes in the
1975185029Spjd			 * mountpoint path.
1976185029Spjd			 */
1977185029Spjd			if (strcmp(root, "/") == 0)
1978185029Spjd				root++;
1979185029Spjd
1980185029Spjd			/*
1981185029Spjd			 * If the mountpoint is '/' then skip over this
1982185029Spjd			 * if we are obtaining either an alternate root or
1983185029Spjd			 * an inherited mountpoint.
1984185029Spjd			 */
1985185029Spjd			if (str[1] == '\0' && (root[0] != '\0' ||
1986185029Spjd			    relpath[0] != '\0'))
1987168404Spjd				str++;
1988168404Spjd
1989168404Spjd			if (relpath[0] == '\0')
1990168404Spjd				(void) snprintf(propbuf, proplen, "%s%s",
1991168404Spjd				    root, str);
1992168404Spjd			else
1993168404Spjd				(void) snprintf(propbuf, proplen, "%s%s%s%s",
1994168404Spjd				    root, str, relpath[0] == '@' ? "" : "/",
1995168404Spjd				    relpath);
1996168404Spjd		} else {
1997168404Spjd			/* 'legacy' or 'none' */
1998168404Spjd			(void) strlcpy(propbuf, str, proplen);
1999168404Spjd		}
2000168404Spjd
2001168404Spjd		break;
2002168404Spjd
2003168404Spjd	case ZFS_PROP_ORIGIN:
2004168404Spjd		(void) strlcpy(propbuf, getprop_string(zhp, prop, &source),
2005168404Spjd		    proplen);
2006168404Spjd		/*
2007168404Spjd		 * If there is no parent at all, return failure to indicate that
2008168404Spjd		 * it doesn't apply to this dataset.
2009168404Spjd		 */
2010168404Spjd		if (propbuf[0] == '\0')
2011168404Spjd			return (-1);
2012168404Spjd		break;
2013168404Spjd
2014168404Spjd	case ZFS_PROP_QUOTA:
2015185029Spjd	case ZFS_PROP_REFQUOTA:
2016168404Spjd	case ZFS_PROP_RESERVATION:
2017185029Spjd	case ZFS_PROP_REFRESERVATION:
2018185029Spjd
2019168404Spjd		if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
2020168404Spjd			return (-1);
2021168404Spjd
2022168404Spjd		/*
2023168404Spjd		 * If quota or reservation is 0, we translate this into 'none'
2024168404Spjd		 * (unless literal is set), and indicate that it's the default
2025168404Spjd		 * value.  Otherwise, we print the number nicely and indicate
2026168404Spjd		 * that its set locally.
2027168404Spjd		 */
2028168404Spjd		if (val == 0) {
2029168404Spjd			if (literal)
2030168404Spjd				(void) strlcpy(propbuf, "0", proplen);
2031168404Spjd			else
2032168404Spjd				(void) strlcpy(propbuf, "none", proplen);
2033168404Spjd		} else {
2034168404Spjd			if (literal)
2035168404Spjd				(void) snprintf(propbuf, proplen, "%llu",
2036168404Spjd				    (u_longlong_t)val);
2037168404Spjd			else
2038168404Spjd				zfs_nicenum(val, propbuf, proplen);
2039168404Spjd		}
2040168404Spjd		break;
2041168404Spjd
2042223623Smm	case ZFS_PROP_REFRATIO:
2043168404Spjd	case ZFS_PROP_COMPRESSRATIO:
2044168404Spjd		if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
2045168404Spjd			return (-1);
2046219089Spjd		(void) snprintf(propbuf, proplen, "%llu.%02llux",
2047219089Spjd		    (u_longlong_t)(val / 100),
2048219089Spjd		    (u_longlong_t)(val % 100));
2049168404Spjd		break;
2050168404Spjd
2051168404Spjd	case ZFS_PROP_TYPE:
2052168404Spjd		switch (zhp->zfs_type) {
2053168404Spjd		case ZFS_TYPE_FILESYSTEM:
2054168404Spjd			str = "filesystem";
2055168404Spjd			break;
2056168404Spjd		case ZFS_TYPE_VOLUME:
2057168404Spjd			str = "volume";
2058168404Spjd			break;
2059168404Spjd		case ZFS_TYPE_SNAPSHOT:
2060168404Spjd			str = "snapshot";
2061168404Spjd			break;
2062168404Spjd		default:
2063168404Spjd			abort();
2064168404Spjd		}
2065168404Spjd		(void) snprintf(propbuf, proplen, "%s", str);
2066168404Spjd		break;
2067168404Spjd
2068168404Spjd	case ZFS_PROP_MOUNTED:
2069168404Spjd		/*
2070168404Spjd		 * The 'mounted' property is a pseudo-property that described
2071168404Spjd		 * whether the filesystem is currently mounted.  Even though
2072168404Spjd		 * it's a boolean value, the typical values of "on" and "off"
2073168404Spjd		 * don't make sense, so we translate to "yes" and "no".
2074168404Spjd		 */
2075168404Spjd		if (get_numeric_property(zhp, ZFS_PROP_MOUNTED,
2076168404Spjd		    src, &source, &val) != 0)
2077168404Spjd			return (-1);
2078168404Spjd		if (val)
2079168404Spjd			(void) strlcpy(propbuf, "yes", proplen);
2080168404Spjd		else
2081168404Spjd			(void) strlcpy(propbuf, "no", proplen);
2082168404Spjd		break;
2083168404Spjd
2084168404Spjd	case ZFS_PROP_NAME:
2085168404Spjd		/*
2086168404Spjd		 * The 'name' property is a pseudo-property derived from the
2087168404Spjd		 * dataset name.  It is presented as a real property to simplify
2088168404Spjd		 * consumers.
2089168404Spjd		 */
2090168404Spjd		(void) strlcpy(propbuf, zhp->zfs_name, proplen);
2091168404Spjd		break;
2092168404Spjd
2093219089Spjd	case ZFS_PROP_MLSLABEL:
2094219089Spjd		{
2095219089Spjd#ifdef sun
2096219089Spjd			m_label_t *new_sl = NULL;
2097219089Spjd			char *ascii = NULL;	/* human readable label */
2098219089Spjd
2099219089Spjd			(void) strlcpy(propbuf,
2100219089Spjd			    getprop_string(zhp, prop, &source), proplen);
2101219089Spjd
2102219089Spjd			if (literal || (strcasecmp(propbuf,
2103219089Spjd			    ZFS_MLSLABEL_DEFAULT) == 0))
2104219089Spjd				break;
2105219089Spjd
2106219089Spjd			/*
2107219089Spjd			 * Try to translate the internal hex string to
2108219089Spjd			 * human-readable output.  If there are any
2109219089Spjd			 * problems just use the hex string.
2110219089Spjd			 */
2111219089Spjd
2112219089Spjd			if (str_to_label(propbuf, &new_sl, MAC_LABEL,
2113219089Spjd			    L_NO_CORRECTION, NULL) == -1) {
2114219089Spjd				m_label_free(new_sl);
2115219089Spjd				break;
2116219089Spjd			}
2117219089Spjd
2118219089Spjd			if (label_to_str(new_sl, &ascii, M_LABEL,
2119219089Spjd			    DEF_NAMES) != 0) {
2120219089Spjd				if (ascii)
2121219089Spjd					free(ascii);
2122219089Spjd				m_label_free(new_sl);
2123219089Spjd				break;
2124219089Spjd			}
2125219089Spjd			m_label_free(new_sl);
2126219089Spjd
2127219089Spjd			(void) strlcpy(propbuf, ascii, proplen);
2128219089Spjd			free(ascii);
2129219089Spjd#else	/* !sun */
2130219089Spjd			propbuf[0] = '\0';
2131219089Spjd#endif	/* !sun */
2132219089Spjd		}
2133219089Spjd		break;
2134219089Spjd
2135168404Spjd	default:
2136185029Spjd		switch (zfs_prop_get_type(prop)) {
2137185029Spjd		case PROP_TYPE_NUMBER:
2138185029Spjd			if (get_numeric_property(zhp, prop, src,
2139185029Spjd			    &source, &val) != 0)
2140185029Spjd				return (-1);
2141185029Spjd			if (literal)
2142185029Spjd				(void) snprintf(propbuf, proplen, "%llu",
2143185029Spjd				    (u_longlong_t)val);
2144185029Spjd			else
2145185029Spjd				zfs_nicenum(val, propbuf, proplen);
2146185029Spjd			break;
2147185029Spjd
2148185029Spjd		case PROP_TYPE_STRING:
2149185029Spjd			(void) strlcpy(propbuf,
2150185029Spjd			    getprop_string(zhp, prop, &source), proplen);
2151185029Spjd			break;
2152185029Spjd
2153185029Spjd		case PROP_TYPE_INDEX:
2154185029Spjd			if (get_numeric_property(zhp, prop, src,
2155185029Spjd			    &source, &val) != 0)
2156185029Spjd				return (-1);
2157185029Spjd			if (zfs_prop_index_to_string(prop, val, &strval) != 0)
2158185029Spjd				return (-1);
2159185029Spjd			(void) strlcpy(propbuf, strval, proplen);
2160185029Spjd			break;
2161185029Spjd
2162185029Spjd		default:
2163185029Spjd			abort();
2164185029Spjd		}
2165168404Spjd	}
2166168404Spjd
2167168404Spjd	get_source(zhp, src, source, statbuf, statlen);
2168168404Spjd
2169168404Spjd	return (0);
2170168404Spjd}
2171168404Spjd
2172168404Spjd/*
2173168404Spjd * Utility function to get the given numeric property.  Does no validation that
2174168404Spjd * the given property is the appropriate type; should only be used with
2175168404Spjd * hard-coded property types.
2176168404Spjd */
2177168404Spjduint64_t
2178168404Spjdzfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop)
2179168404Spjd{
2180168404Spjd	char *source;
2181168404Spjd	uint64_t val;
2182168404Spjd
2183185029Spjd	(void) get_numeric_property(zhp, prop, NULL, &source, &val);
2184168404Spjd
2185168404Spjd	return (val);
2186168404Spjd}
2187168404Spjd
2188185029Spjdint
2189185029Spjdzfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val)
2190185029Spjd{
2191185029Spjd	char buf[64];
2192185029Spjd
2193209962Smm	(void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val);
2194185029Spjd	return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf));
2195185029Spjd}
2196185029Spjd
2197168404Spjd/*
2198168404Spjd * Similar to zfs_prop_get(), but returns the value as an integer.
2199168404Spjd */
2200168404Spjdint
2201168404Spjdzfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value,
2202185029Spjd    zprop_source_t *src, char *statbuf, size_t statlen)
2203168404Spjd{
2204168404Spjd	char *source;
2205168404Spjd
2206168404Spjd	/*
2207168404Spjd	 * Check to see if this property applies to our object
2208168404Spjd	 */
2209185029Spjd	if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) {
2210168404Spjd		return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE,
2211168404Spjd		    dgettext(TEXT_DOMAIN, "cannot get property '%s'"),
2212168404Spjd		    zfs_prop_to_name(prop)));
2213185029Spjd	}
2214168404Spjd
2215168404Spjd	if (src)
2216185029Spjd		*src = ZPROP_SRC_NONE;
2217168404Spjd
2218168404Spjd	if (get_numeric_property(zhp, prop, src, &source, value) != 0)
2219168404Spjd		return (-1);
2220168404Spjd
2221168404Spjd	get_source(zhp, src, source, statbuf, statlen);
2222168404Spjd
2223168404Spjd	return (0);
2224168404Spjd}
2225168404Spjd
2226209962Smmstatic int
2227209962Smmidmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser,
2228209962Smm    char **domainp, idmap_rid_t *ridp)
2229209962Smm{
2230209962Smm#ifdef sun
2231209962Smm	idmap_get_handle_t *get_hdl = NULL;
2232209962Smm	idmap_stat status;
2233209962Smm	int err = EINVAL;
2234209962Smm
2235219089Spjd	if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS)
2236209962Smm		goto out;
2237209962Smm
2238209962Smm	if (isuser) {
2239209962Smm		err = idmap_get_sidbyuid(get_hdl, id,
2240209962Smm		    IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status);
2241209962Smm	} else {
2242209962Smm		err = idmap_get_sidbygid(get_hdl, id,
2243209962Smm		    IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status);
2244209962Smm	}
2245209962Smm	if (err == IDMAP_SUCCESS &&
2246209962Smm	    idmap_get_mappings(get_hdl) == IDMAP_SUCCESS &&
2247209962Smm	    status == IDMAP_SUCCESS)
2248209962Smm		err = 0;
2249209962Smm	else
2250209962Smm		err = EINVAL;
2251209962Smmout:
2252209962Smm	if (get_hdl)
2253209962Smm		idmap_get_destroy(get_hdl);
2254209962Smm	return (err);
2255209962Smm#else	/* !sun */
2256209962Smm	assert(!"invalid code path");
2257209962Smm#endif	/* !sun */
2258209962Smm}
2259209962Smm
2260168404Spjd/*
2261209962Smm * convert the propname into parameters needed by kernel
2262209962Smm * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829
2263209962Smm * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789
2264209962Smm */
2265209962Smmstatic int
2266209962Smmuserquota_propname_decode(const char *propname, boolean_t zoned,
2267209962Smm    zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp)
2268209962Smm{
2269209962Smm	zfs_userquota_prop_t type;
2270209962Smm	char *cp, *end;
2271209962Smm	char *numericsid = NULL;
2272209962Smm	boolean_t isuser;
2273209962Smm
2274209962Smm	domain[0] = '\0';
2275209962Smm
2276209962Smm	/* Figure out the property type ({user|group}{quota|space}) */
2277209962Smm	for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) {
2278209962Smm		if (strncmp(propname, zfs_userquota_prop_prefixes[type],
2279209962Smm		    strlen(zfs_userquota_prop_prefixes[type])) == 0)
2280209962Smm			break;
2281209962Smm	}
2282209962Smm	if (type == ZFS_NUM_USERQUOTA_PROPS)
2283209962Smm		return (EINVAL);
2284209962Smm	*typep = type;
2285209962Smm
2286209962Smm	isuser = (type == ZFS_PROP_USERQUOTA ||
2287209962Smm	    type == ZFS_PROP_USERUSED);
2288209962Smm
2289209962Smm	cp = strchr(propname, '@') + 1;
2290209962Smm
2291209962Smm	if (strchr(cp, '@')) {
2292209962Smm#ifdef sun
2293209962Smm		/*
2294209962Smm		 * It's a SID name (eg "user@domain") that needs to be
2295209962Smm		 * turned into S-1-domainID-RID.
2296209962Smm		 */
2297209962Smm		directory_error_t e;
2298209962Smm		if (zoned && getzoneid() == GLOBAL_ZONEID)
2299209962Smm			return (ENOENT);
2300209962Smm		if (isuser) {
2301209962Smm			e = directory_sid_from_user_name(NULL,
2302209962Smm			    cp, &numericsid);
2303209962Smm		} else {
2304209962Smm			e = directory_sid_from_group_name(NULL,
2305209962Smm			    cp, &numericsid);
2306209962Smm		}
2307209962Smm		if (e != NULL) {
2308209962Smm			directory_error_free(e);
2309209962Smm			return (ENOENT);
2310209962Smm		}
2311209962Smm		if (numericsid == NULL)
2312209962Smm			return (ENOENT);
2313209962Smm		cp = numericsid;
2314209962Smm		/* will be further decoded below */
2315209962Smm#else	/* !sun */
2316219089Spjd		return (ENOENT);
2317209962Smm#endif	/* !sun */
2318209962Smm	}
2319209962Smm
2320209962Smm	if (strncmp(cp, "S-1-", 4) == 0) {
2321209962Smm		/* It's a numeric SID (eg "S-1-234-567-89") */
2322209962Smm		(void) strlcpy(domain, cp, domainlen);
2323209962Smm		cp = strrchr(domain, '-');
2324209962Smm		*cp = '\0';
2325209962Smm		cp++;
2326209962Smm
2327209962Smm		errno = 0;
2328209962Smm		*ridp = strtoull(cp, &end, 10);
2329209962Smm		if (numericsid) {
2330209962Smm			free(numericsid);
2331209962Smm			numericsid = NULL;
2332209962Smm		}
2333209962Smm		if (errno != 0 || *end != '\0')
2334209962Smm			return (EINVAL);
2335209962Smm	} else if (!isdigit(*cp)) {
2336209962Smm		/*
2337209962Smm		 * It's a user/group name (eg "user") that needs to be
2338209962Smm		 * turned into a uid/gid
2339209962Smm		 */
2340209962Smm		if (zoned && getzoneid() == GLOBAL_ZONEID)
2341209962Smm			return (ENOENT);
2342209962Smm		if (isuser) {
2343209962Smm			struct passwd *pw;
2344209962Smm			pw = getpwnam(cp);
2345209962Smm			if (pw == NULL)
2346209962Smm				return (ENOENT);
2347209962Smm			*ridp = pw->pw_uid;
2348209962Smm		} else {
2349209962Smm			struct group *gr;
2350209962Smm			gr = getgrnam(cp);
2351209962Smm			if (gr == NULL)
2352209962Smm				return (ENOENT);
2353209962Smm			*ridp = gr->gr_gid;
2354209962Smm		}
2355209962Smm	} else {
2356209962Smm		/* It's a user/group ID (eg "12345"). */
2357209962Smm		uid_t id = strtoul(cp, &end, 10);
2358209962Smm		idmap_rid_t rid;
2359209962Smm		char *mapdomain;
2360209962Smm
2361209962Smm		if (*end != '\0')
2362209962Smm			return (EINVAL);
2363209962Smm		if (id > MAXUID) {
2364209962Smm			/* It's an ephemeral ID. */
2365209962Smm			if (idmap_id_to_numeric_domain_rid(id, isuser,
2366209962Smm			    &mapdomain, &rid) != 0)
2367209962Smm				return (ENOENT);
2368209962Smm			(void) strlcpy(domain, mapdomain, domainlen);
2369209962Smm			*ridp = rid;
2370209962Smm		} else {
2371209962Smm			*ridp = id;
2372209962Smm		}
2373209962Smm	}
2374209962Smm
2375209962Smm	ASSERT3P(numericsid, ==, NULL);
2376209962Smm	return (0);
2377209962Smm}
2378209962Smm
2379209962Smmstatic int
2380209962Smmzfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname,
2381209962Smm    uint64_t *propvalue, zfs_userquota_prop_t *typep)
2382209962Smm{
2383209962Smm	int err;
2384209962Smm	zfs_cmd_t zc = { 0 };
2385209962Smm
2386209962Smm	(void) strncpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
2387209962Smm
2388209962Smm	err = userquota_propname_decode(propname,
2389209962Smm	    zfs_prop_get_int(zhp, ZFS_PROP_ZONED),
2390209962Smm	    typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid);
2391209962Smm	zc.zc_objset_type = *typep;
2392209962Smm	if (err)
2393209962Smm		return (err);
2394209962Smm
2395209962Smm	err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc);
2396209962Smm	if (err)
2397209962Smm		return (err);
2398209962Smm
2399209962Smm	*propvalue = zc.zc_cookie;
2400209962Smm	return (0);
2401209962Smm}
2402209962Smm
2403209962Smmint
2404209962Smmzfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname,
2405209962Smm    uint64_t *propvalue)
2406209962Smm{
2407209962Smm	zfs_userquota_prop_t type;
2408209962Smm
2409209962Smm	return (zfs_prop_get_userquota_common(zhp, propname, propvalue,
2410209962Smm	    &type));
2411209962Smm}
2412209962Smm
2413209962Smmint
2414209962Smmzfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname,
2415209962Smm    char *propbuf, int proplen, boolean_t literal)
2416209962Smm{
2417209962Smm	int err;
2418209962Smm	uint64_t propvalue;
2419209962Smm	zfs_userquota_prop_t type;
2420209962Smm
2421209962Smm	err = zfs_prop_get_userquota_common(zhp, propname, &propvalue,
2422209962Smm	    &type);
2423209962Smm
2424209962Smm	if (err)
2425209962Smm		return (err);
2426209962Smm
2427209962Smm	if (literal) {
2428209962Smm		(void) snprintf(propbuf, proplen, "%llu", propvalue);
2429209962Smm	} else if (propvalue == 0 &&
2430209962Smm	    (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) {
2431209962Smm		(void) strlcpy(propbuf, "none", proplen);
2432209962Smm	} else {
2433209962Smm		zfs_nicenum(propvalue, propbuf, proplen);
2434209962Smm	}
2435209962Smm	return (0);
2436209962Smm}
2437209962Smm
2438209962Smm/*
2439168404Spjd * Returns the name of the given zfs handle.
2440168404Spjd */
2441168404Spjdconst char *
2442168404Spjdzfs_get_name(const zfs_handle_t *zhp)
2443168404Spjd{
2444168404Spjd	return (zhp->zfs_name);
2445168404Spjd}
2446168404Spjd
2447168404Spjd/*
2448168404Spjd * Returns the type of the given zfs handle.
2449168404Spjd */
2450168404Spjdzfs_type_t
2451168404Spjdzfs_get_type(const zfs_handle_t *zhp)
2452168404Spjd{
2453168404Spjd	return (zhp->zfs_type);
2454168404Spjd}
2455168404Spjd
2456209962Smmstatic int
2457209962Smmzfs_do_list_ioctl(zfs_handle_t *zhp, unsigned long arg, zfs_cmd_t *zc)
2458209962Smm{
2459209962Smm	int rc;
2460209962Smm	uint64_t	orig_cookie;
2461209962Smm
2462209962Smm	orig_cookie = zc->zc_cookie;
2463209962Smmtop:
2464209962Smm	(void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name));
2465209962Smm	rc = ioctl(zhp->zfs_hdl->libzfs_fd, arg, zc);
2466209962Smm
2467209962Smm	if (rc == -1) {
2468209962Smm		switch (errno) {
2469209962Smm		case ENOMEM:
2470209962Smm			/* expand nvlist memory and try again */
2471209962Smm			if (zcmd_expand_dst_nvlist(zhp->zfs_hdl, zc) != 0) {
2472209962Smm				zcmd_free_nvlists(zc);
2473209962Smm				return (-1);
2474209962Smm			}
2475209962Smm			zc->zc_cookie = orig_cookie;
2476209962Smm			goto top;
2477209962Smm		/*
2478209962Smm		 * An errno value of ESRCH indicates normal completion.
2479209962Smm		 * If ENOENT is returned, then the underlying dataset
2480209962Smm		 * has been removed since we obtained the handle.
2481209962Smm		 */
2482209962Smm		case ESRCH:
2483209962Smm		case ENOENT:
2484209962Smm			rc = 1;
2485209962Smm			break;
2486209962Smm		default:
2487209962Smm			rc = zfs_standard_error(zhp->zfs_hdl, errno,
2488209962Smm			    dgettext(TEXT_DOMAIN,
2489209962Smm			    "cannot iterate filesystems"));
2490209962Smm			break;
2491209962Smm		}
2492209962Smm	}
2493209962Smm	return (rc);
2494209962Smm}
2495209962Smm
2496168404Spjd/*
2497168404Spjd * Iterate over all child filesystems
2498168404Spjd */
2499168404Spjdint
2500168404Spjdzfs_iter_filesystems(zfs_handle_t *zhp, zfs_iter_f func, void *data)
2501168404Spjd{
2502168404Spjd	zfs_cmd_t zc = { 0 };
2503168404Spjd	zfs_handle_t *nzhp;
2504168404Spjd	int ret;
2505168404Spjd
2506185029Spjd	if (zhp->zfs_type != ZFS_TYPE_FILESYSTEM)
2507185029Spjd		return (0);
2508185029Spjd
2509209962Smm	if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0)
2510209962Smm		return (-1);
2511209962Smm
2512209962Smm	while ((ret = zfs_do_list_ioctl(zhp, ZFS_IOC_DATASET_LIST_NEXT,
2513209962Smm	    &zc)) == 0) {
2514168404Spjd		/*
2515168404Spjd		 * Silently ignore errors, as the only plausible explanation is
2516168404Spjd		 * that the pool has since been removed.
2517168404Spjd		 */
2518209962Smm		if ((nzhp = make_dataset_handle_zc(zhp->zfs_hdl,
2519209962Smm		    &zc)) == NULL) {
2520168404Spjd			continue;
2521209962Smm		}
2522168404Spjd
2523209962Smm		if ((ret = func(nzhp, data)) != 0) {
2524209962Smm			zcmd_free_nvlists(&zc);
2525168404Spjd			return (ret);
2526209962Smm		}
2527168404Spjd	}
2528209962Smm	zcmd_free_nvlists(&zc);
2529209962Smm	return ((ret < 0) ? ret : 0);
2530168404Spjd}
2531168404Spjd
2532168404Spjd/*
2533168404Spjd * Iterate over all snapshots
2534168404Spjd */
2535168404Spjdint
2536168404Spjdzfs_iter_snapshots(zfs_handle_t *zhp, zfs_iter_f func, void *data)
2537168404Spjd{
2538168404Spjd	zfs_cmd_t zc = { 0 };
2539168404Spjd	zfs_handle_t *nzhp;
2540168404Spjd	int ret;
2541168404Spjd
2542185029Spjd	if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT)
2543185029Spjd		return (0);
2544185029Spjd
2545209962Smm	if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0)
2546209962Smm		return (-1);
2547209962Smm	while ((ret = zfs_do_list_ioctl(zhp, ZFS_IOC_SNAPSHOT_LIST_NEXT,
2548209962Smm	    &zc)) == 0) {
2549168404Spjd
2550209962Smm		if ((nzhp = make_dataset_handle_zc(zhp->zfs_hdl,
2551209962Smm		    &zc)) == NULL) {
2552209962Smm			continue;
2553209962Smm		}
2554209962Smm
2555209962Smm		if ((ret = func(nzhp, data)) != 0) {
2556209962Smm			zcmd_free_nvlists(&zc);
2557168404Spjd			return (ret);
2558209962Smm		}
2559168404Spjd	}
2560209962Smm	zcmd_free_nvlists(&zc);
2561209962Smm	return ((ret < 0) ? ret : 0);
2562168404Spjd}
2563168404Spjd
2564168404Spjd/*
2565168404Spjd * Iterate over all children, snapshots and filesystems
2566168404Spjd */
2567168404Spjdint
2568168404Spjdzfs_iter_children(zfs_handle_t *zhp, zfs_iter_f func, void *data)
2569168404Spjd{
2570168404Spjd	int ret;
2571168404Spjd
2572168404Spjd	if ((ret = zfs_iter_filesystems(zhp, func, data)) != 0)
2573168404Spjd		return (ret);
2574168404Spjd
2575168404Spjd	return (zfs_iter_snapshots(zhp, func, data));
2576168404Spjd}
2577168404Spjd
2578168404Spjd/*
2579219089Spjd * Is one dataset name a child dataset of another?
2580219089Spjd *
2581219089Spjd * Needs to handle these cases:
2582219089Spjd * Dataset 1	"a/foo"		"a/foo"		"a/foo"		"a/foo"
2583219089Spjd * Dataset 2	"a/fo"		"a/foobar"	"a/bar/baz"	"a/foo/bar"
2584219089Spjd * Descendant?	No.		No.		No.		Yes.
2585219089Spjd */
2586219089Spjdstatic boolean_t
2587219089Spjdis_descendant(const char *ds1, const char *ds2)
2588219089Spjd{
2589219089Spjd	size_t d1len = strlen(ds1);
2590219089Spjd
2591219089Spjd	/* ds2 can't be a descendant if it's smaller */
2592219089Spjd	if (strlen(ds2) < d1len)
2593219089Spjd		return (B_FALSE);
2594219089Spjd
2595219089Spjd	/* otherwise, compare strings and verify that there's a '/' char */
2596219089Spjd	return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0));
2597219089Spjd}
2598219089Spjd
2599219089Spjd/*
2600168404Spjd * Given a complete name, return just the portion that refers to the parent.
2601168404Spjd * Can return NULL if this is a pool.
2602168404Spjd */
2603168404Spjdstatic int
2604168404Spjdparent_name(const char *path, char *buf, size_t buflen)
2605168404Spjd{
2606168404Spjd	char *loc;
2607168404Spjd
2608168404Spjd	if ((loc = strrchr(path, '/')) == NULL)
2609168404Spjd		return (-1);
2610168404Spjd
2611168404Spjd	(void) strncpy(buf, path, MIN(buflen, loc - path));
2612168404Spjd	buf[loc - path] = '\0';
2613168404Spjd
2614168404Spjd	return (0);
2615168404Spjd}
2616168404Spjd
2617168404Spjd/*
2618185029Spjd * If accept_ancestor is false, then check to make sure that the given path has
2619185029Spjd * a parent, and that it exists.  If accept_ancestor is true, then find the
2620185029Spjd * closest existing ancestor for the given path.  In prefixlen return the
2621185029Spjd * length of already existing prefix of the given path.  We also fetch the
2622185029Spjd * 'zoned' property, which is used to validate property settings when creating
2623185029Spjd * new datasets.
2624168404Spjd */
2625168404Spjdstatic int
2626185029Spjdcheck_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned,
2627185029Spjd    boolean_t accept_ancestor, int *prefixlen)
2628168404Spjd{
2629168404Spjd	zfs_cmd_t zc = { 0 };
2630168404Spjd	char parent[ZFS_MAXNAMELEN];
2631168404Spjd	char *slash;
2632168404Spjd	zfs_handle_t *zhp;
2633168404Spjd	char errbuf[1024];
2634219089Spjd	uint64_t is_zoned;
2635168404Spjd
2636209962Smm	(void) snprintf(errbuf, sizeof (errbuf),
2637209962Smm	    dgettext(TEXT_DOMAIN, "cannot create '%s'"), path);
2638168404Spjd
2639168404Spjd	/* get parent, and check to see if this is just a pool */
2640168404Spjd	if (parent_name(path, parent, sizeof (parent)) != 0) {
2641168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2642168404Spjd		    "missing dataset name"));
2643168404Spjd		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
2644168404Spjd	}
2645168404Spjd
2646168404Spjd	/* check to see if the pool exists */
2647168404Spjd	if ((slash = strchr(parent, '/')) == NULL)
2648168404Spjd		slash = parent + strlen(parent);
2649168404Spjd	(void) strncpy(zc.zc_name, parent, slash - parent);
2650168404Spjd	zc.zc_name[slash - parent] = '\0';
2651168404Spjd	if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 &&
2652168404Spjd	    errno == ENOENT) {
2653168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2654168404Spjd		    "no such pool '%s'"), zc.zc_name);
2655168404Spjd		return (zfs_error(hdl, EZFS_NOENT, errbuf));
2656168404Spjd	}
2657168404Spjd
2658168404Spjd	/* check to see if the parent dataset exists */
2659185029Spjd	while ((zhp = make_dataset_handle(hdl, parent)) == NULL) {
2660185029Spjd		if (errno == ENOENT && accept_ancestor) {
2661185029Spjd			/*
2662185029Spjd			 * Go deeper to find an ancestor, give up on top level.
2663185029Spjd			 */
2664185029Spjd			if (parent_name(parent, parent, sizeof (parent)) != 0) {
2665185029Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2666185029Spjd				    "no such pool '%s'"), zc.zc_name);
2667185029Spjd				return (zfs_error(hdl, EZFS_NOENT, errbuf));
2668185029Spjd			}
2669185029Spjd		} else if (errno == ENOENT) {
2670168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2671168404Spjd			    "parent does not exist"));
2672168404Spjd			return (zfs_error(hdl, EZFS_NOENT, errbuf));
2673185029Spjd		} else
2674168404Spjd			return (zfs_standard_error(hdl, errno, errbuf));
2675168404Spjd	}
2676168404Spjd
2677219089Spjd	is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
2678219089Spjd	if (zoned != NULL)
2679219089Spjd		*zoned = is_zoned;
2680219089Spjd
2681168404Spjd	/* we are in a non-global zone, but parent is in the global zone */
2682219089Spjd	if (getzoneid() != GLOBAL_ZONEID && !is_zoned) {
2683168404Spjd		(void) zfs_standard_error(hdl, EPERM, errbuf);
2684168404Spjd		zfs_close(zhp);
2685168404Spjd		return (-1);
2686168404Spjd	}
2687168404Spjd
2688168404Spjd	/* make sure parent is a filesystem */
2689168404Spjd	if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) {
2690168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2691168404Spjd		    "parent is not a filesystem"));
2692168404Spjd		(void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
2693168404Spjd		zfs_close(zhp);
2694168404Spjd		return (-1);
2695168404Spjd	}
2696168404Spjd
2697168404Spjd	zfs_close(zhp);
2698185029Spjd	if (prefixlen != NULL)
2699185029Spjd		*prefixlen = strlen(parent);
2700168404Spjd	return (0);
2701168404Spjd}
2702168404Spjd
2703168404Spjd/*
2704185029Spjd * Finds whether the dataset of the given type(s) exists.
2705185029Spjd */
2706185029Spjdboolean_t
2707185029Spjdzfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types)
2708185029Spjd{
2709185029Spjd	zfs_handle_t *zhp;
2710185029Spjd
2711185029Spjd	if (!zfs_validate_name(hdl, path, types, B_FALSE))
2712185029Spjd		return (B_FALSE);
2713185029Spjd
2714185029Spjd	/*
2715185029Spjd	 * Try to get stats for the dataset, which will tell us if it exists.
2716185029Spjd	 */
2717185029Spjd	if ((zhp = make_dataset_handle(hdl, path)) != NULL) {
2718185029Spjd		int ds_type = zhp->zfs_type;
2719185029Spjd
2720185029Spjd		zfs_close(zhp);
2721185029Spjd		if (types & ds_type)
2722185029Spjd			return (B_TRUE);
2723185029Spjd	}
2724185029Spjd	return (B_FALSE);
2725185029Spjd}
2726185029Spjd
2727185029Spjd/*
2728185029Spjd * Given a path to 'target', create all the ancestors between
2729185029Spjd * the prefixlen portion of the path, and the target itself.
2730185029Spjd * Fail if the initial prefixlen-ancestor does not already exist.
2731185029Spjd */
2732185029Spjdint
2733185029Spjdcreate_parents(libzfs_handle_t *hdl, char *target, int prefixlen)
2734185029Spjd{
2735185029Spjd	zfs_handle_t *h;
2736185029Spjd	char *cp;
2737185029Spjd	const char *opname;
2738185029Spjd
2739185029Spjd	/* make sure prefix exists */
2740185029Spjd	cp = target + prefixlen;
2741185029Spjd	if (*cp != '/') {
2742185029Spjd		assert(strchr(cp, '/') == NULL);
2743185029Spjd		h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
2744185029Spjd	} else {
2745185029Spjd		*cp = '\0';
2746185029Spjd		h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
2747185029Spjd		*cp = '/';
2748185029Spjd	}
2749185029Spjd	if (h == NULL)
2750185029Spjd		return (-1);
2751185029Spjd	zfs_close(h);
2752185029Spjd
2753185029Spjd	/*
2754185029Spjd	 * Attempt to create, mount, and share any ancestor filesystems,
2755185029Spjd	 * up to the prefixlen-long one.
2756185029Spjd	 */
2757185029Spjd	for (cp = target + prefixlen + 1;
2758185029Spjd	    cp = strchr(cp, '/'); *cp = '/', cp++) {
2759185029Spjd		char *logstr;
2760185029Spjd
2761185029Spjd		*cp = '\0';
2762185029Spjd
2763185029Spjd		h = make_dataset_handle(hdl, target);
2764185029Spjd		if (h) {
2765185029Spjd			/* it already exists, nothing to do here */
2766185029Spjd			zfs_close(h);
2767185029Spjd			continue;
2768185029Spjd		}
2769185029Spjd
2770185029Spjd		logstr = hdl->libzfs_log_str;
2771185029Spjd		hdl->libzfs_log_str = NULL;
2772185029Spjd		if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM,
2773185029Spjd		    NULL) != 0) {
2774185029Spjd			hdl->libzfs_log_str = logstr;
2775185029Spjd			opname = dgettext(TEXT_DOMAIN, "create");
2776185029Spjd			goto ancestorerr;
2777185029Spjd		}
2778185029Spjd
2779185029Spjd		hdl->libzfs_log_str = logstr;
2780185029Spjd		h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
2781185029Spjd		if (h == NULL) {
2782185029Spjd			opname = dgettext(TEXT_DOMAIN, "open");
2783185029Spjd			goto ancestorerr;
2784185029Spjd		}
2785185029Spjd
2786185029Spjd		if (zfs_mount(h, NULL, 0) != 0) {
2787185029Spjd			opname = dgettext(TEXT_DOMAIN, "mount");
2788185029Spjd			goto ancestorerr;
2789185029Spjd		}
2790185029Spjd
2791185029Spjd		if (zfs_share(h) != 0) {
2792185029Spjd			opname = dgettext(TEXT_DOMAIN, "share");
2793185029Spjd			goto ancestorerr;
2794185029Spjd		}
2795185029Spjd
2796185029Spjd		zfs_close(h);
2797185029Spjd	}
2798185029Spjd
2799185029Spjd	return (0);
2800185029Spjd
2801185029Spjdancestorerr:
2802185029Spjd	zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2803185029Spjd	    "failed to %s ancestor '%s'"), opname, target);
2804185029Spjd	return (-1);
2805185029Spjd}
2806185029Spjd
2807185029Spjd/*
2808185029Spjd * Creates non-existing ancestors of the given path.
2809185029Spjd */
2810185029Spjdint
2811185029Spjdzfs_create_ancestors(libzfs_handle_t *hdl, const char *path)
2812185029Spjd{
2813185029Spjd	int prefix;
2814185029Spjd	char *path_copy;
2815185029Spjd	int rc;
2816185029Spjd
2817219089Spjd	if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0)
2818185029Spjd		return (-1);
2819185029Spjd
2820185029Spjd	if ((path_copy = strdup(path)) != NULL) {
2821185029Spjd		rc = create_parents(hdl, path_copy, prefix);
2822185029Spjd		free(path_copy);
2823185029Spjd	}
2824185029Spjd	if (path_copy == NULL || rc != 0)
2825185029Spjd		return (-1);
2826185029Spjd
2827185029Spjd	return (0);
2828185029Spjd}
2829185029Spjd
2830185029Spjd/*
2831168404Spjd * Create a new filesystem or volume.
2832168404Spjd */
2833168404Spjdint
2834168404Spjdzfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type,
2835168404Spjd    nvlist_t *props)
2836168404Spjd{
2837168404Spjd	zfs_cmd_t zc = { 0 };
2838168404Spjd	int ret;
2839168404Spjd	uint64_t size = 0;
2840168404Spjd	uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE);
2841168404Spjd	char errbuf[1024];
2842168404Spjd	uint64_t zoned;
2843168404Spjd
2844168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
2845168404Spjd	    "cannot create '%s'"), path);
2846168404Spjd
2847168404Spjd	/* validate the path, taking care to note the extended error message */
2848185029Spjd	if (!zfs_validate_name(hdl, path, type, B_TRUE))
2849168404Spjd		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
2850168404Spjd
2851168404Spjd	/* validate parents exist */
2852185029Spjd	if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0)
2853168404Spjd		return (-1);
2854168404Spjd
2855168404Spjd	/*
2856168404Spjd	 * The failure modes when creating a dataset of a different type over
2857168404Spjd	 * one that already exists is a little strange.  In particular, if you
2858168404Spjd	 * try to create a dataset on top of an existing dataset, the ioctl()
2859168404Spjd	 * will return ENOENT, not EEXIST.  To prevent this from happening, we
2860168404Spjd	 * first try to see if the dataset exists.
2861168404Spjd	 */
2862168404Spjd	(void) strlcpy(zc.zc_name, path, sizeof (zc.zc_name));
2863185029Spjd	if (zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) {
2864168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2865168404Spjd		    "dataset already exists"));
2866168404Spjd		return (zfs_error(hdl, EZFS_EXISTS, errbuf));
2867168404Spjd	}
2868168404Spjd
2869168404Spjd	if (type == ZFS_TYPE_VOLUME)
2870168404Spjd		zc.zc_objset_type = DMU_OST_ZVOL;
2871168404Spjd	else
2872168404Spjd		zc.zc_objset_type = DMU_OST_ZFS;
2873168404Spjd
2874185029Spjd	if (props && (props = zfs_valid_proplist(hdl, type, props,
2875168404Spjd	    zoned, NULL, errbuf)) == 0)
2876168404Spjd		return (-1);
2877168404Spjd
2878168404Spjd	if (type == ZFS_TYPE_VOLUME) {
2879168404Spjd		/*
2880168404Spjd		 * If we are creating a volume, the size and block size must
2881168404Spjd		 * satisfy a few restraints.  First, the blocksize must be a
2882168404Spjd		 * valid block size between SPA_{MIN,MAX}BLOCKSIZE.  Second, the
2883168404Spjd		 * volsize must be a multiple of the block size, and cannot be
2884168404Spjd		 * zero.
2885168404Spjd		 */
2886168404Spjd		if (props == NULL || nvlist_lookup_uint64(props,
2887168404Spjd		    zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) {
2888168404Spjd			nvlist_free(props);
2889168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2890168404Spjd			    "missing volume size"));
2891168404Spjd			return (zfs_error(hdl, EZFS_BADPROP, errbuf));
2892168404Spjd		}
2893168404Spjd
2894168404Spjd		if ((ret = nvlist_lookup_uint64(props,
2895168404Spjd		    zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
2896168404Spjd		    &blocksize)) != 0) {
2897168404Spjd			if (ret == ENOENT) {
2898168404Spjd				blocksize = zfs_prop_default_numeric(
2899168404Spjd				    ZFS_PROP_VOLBLOCKSIZE);
2900168404Spjd			} else {
2901168404Spjd				nvlist_free(props);
2902168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2903168404Spjd				    "missing volume block size"));
2904168404Spjd				return (zfs_error(hdl, EZFS_BADPROP, errbuf));
2905168404Spjd			}
2906168404Spjd		}
2907168404Spjd
2908168404Spjd		if (size == 0) {
2909168404Spjd			nvlist_free(props);
2910168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2911168404Spjd			    "volume size cannot be zero"));
2912168404Spjd			return (zfs_error(hdl, EZFS_BADPROP, errbuf));
2913168404Spjd		}
2914168404Spjd
2915168404Spjd		if (size % blocksize != 0) {
2916168404Spjd			nvlist_free(props);
2917168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2918168404Spjd			    "volume size must be a multiple of volume block "
2919168404Spjd			    "size"));
2920168404Spjd			return (zfs_error(hdl, EZFS_BADPROP, errbuf));
2921168404Spjd		}
2922168404Spjd	}
2923168404Spjd
2924185029Spjd	if (props && zcmd_write_src_nvlist(hdl, &zc, props) != 0)
2925168404Spjd		return (-1);
2926168404Spjd	nvlist_free(props);
2927168404Spjd
2928168404Spjd	/* create the dataset */
2929185029Spjd	ret = zfs_ioctl(hdl, ZFS_IOC_CREATE, &zc);
2930168404Spjd
2931168404Spjd	zcmd_free_nvlists(&zc);
2932168404Spjd
2933168404Spjd	/* check for failure */
2934168404Spjd	if (ret != 0) {
2935168404Spjd		char parent[ZFS_MAXNAMELEN];
2936168404Spjd		(void) parent_name(path, parent, sizeof (parent));
2937168404Spjd
2938168404Spjd		switch (errno) {
2939168404Spjd		case ENOENT:
2940168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2941168404Spjd			    "no such parent '%s'"), parent);
2942168404Spjd			return (zfs_error(hdl, EZFS_NOENT, errbuf));
2943168404Spjd
2944168404Spjd		case EINVAL:
2945168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2946168404Spjd			    "parent '%s' is not a filesystem"), parent);
2947168404Spjd			return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
2948168404Spjd
2949168404Spjd		case EDOM:
2950168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2951168404Spjd			    "volume block size must be power of 2 from "
2952168404Spjd			    "%u to %uk"),
2953168404Spjd			    (uint_t)SPA_MINBLOCKSIZE,
2954168404Spjd			    (uint_t)SPA_MAXBLOCKSIZE >> 10);
2955168404Spjd
2956168404Spjd			return (zfs_error(hdl, EZFS_BADPROP, errbuf));
2957168404Spjd
2958185029Spjd		case ENOTSUP:
2959185029Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
2960185029Spjd			    "pool must be upgraded to set this "
2961185029Spjd			    "property or value"));
2962185029Spjd			return (zfs_error(hdl, EZFS_BADVERSION, errbuf));
2963168404Spjd#ifdef _ILP32
2964168404Spjd		case EOVERFLOW:
2965168404Spjd			/*
2966168404Spjd			 * This platform can't address a volume this big.
2967168404Spjd			 */
2968168404Spjd			if (type == ZFS_TYPE_VOLUME)
2969168404Spjd				return (zfs_error(hdl, EZFS_VOLTOOBIG,
2970168404Spjd				    errbuf));
2971168404Spjd#endif
2972168404Spjd			/* FALLTHROUGH */
2973168404Spjd		default:
2974168404Spjd			return (zfs_standard_error(hdl, errno, errbuf));
2975168404Spjd		}
2976168404Spjd	}
2977168404Spjd
2978168404Spjd	return (0);
2979168404Spjd}
2980168404Spjd
2981168404Spjd/*
2982168404Spjd * Destroys the given dataset.  The caller must make sure that the filesystem
2983168404Spjd * isn't mounted, and that there are no active dependents.
2984168404Spjd */
2985168404Spjdint
2986219089Spjdzfs_destroy(zfs_handle_t *zhp, boolean_t defer)
2987168404Spjd{
2988168404Spjd	zfs_cmd_t zc = { 0 };
2989168404Spjd
2990168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
2991168404Spjd
2992168404Spjd	if (ZFS_IS_VOLUME(zhp)) {
2993168404Spjd		zc.zc_objset_type = DMU_OST_ZVOL;
2994168404Spjd	} else {
2995168404Spjd		zc.zc_objset_type = DMU_OST_ZFS;
2996168404Spjd	}
2997168404Spjd
2998219089Spjd	zc.zc_defer_destroy = defer;
2999185029Spjd	if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0) {
3000168404Spjd		return (zfs_standard_error_fmt(zhp->zfs_hdl, errno,
3001168404Spjd		    dgettext(TEXT_DOMAIN, "cannot destroy '%s'"),
3002168404Spjd		    zhp->zfs_name));
3003168404Spjd	}
3004168404Spjd
3005168404Spjd	remove_mountpoint(zhp);
3006168404Spjd
3007168404Spjd	return (0);
3008168404Spjd}
3009168404Spjd
3010168404Spjdstruct destroydata {
3011168404Spjd	char *snapname;
3012168404Spjd	boolean_t gotone;
3013168404Spjd	boolean_t closezhp;
3014168404Spjd};
3015168404Spjd
3016168404Spjdstatic int
3017219089Spjdzfs_check_snap_cb(zfs_handle_t *zhp, void *arg)
3018168404Spjd{
3019168404Spjd	struct destroydata *dd = arg;
3020168404Spjd	zfs_handle_t *szhp;
3021168404Spjd	char name[ZFS_MAXNAMELEN];
3022168404Spjd	boolean_t closezhp = dd->closezhp;
3023219089Spjd	int rv = 0;
3024168404Spjd
3025168404Spjd	(void) strlcpy(name, zhp->zfs_name, sizeof (name));
3026168404Spjd	(void) strlcat(name, "@", sizeof (name));
3027168404Spjd	(void) strlcat(name, dd->snapname, sizeof (name));
3028168404Spjd
3029168404Spjd	szhp = make_dataset_handle(zhp->zfs_hdl, name);
3030168404Spjd	if (szhp) {
3031168404Spjd		dd->gotone = B_TRUE;
3032168404Spjd		zfs_close(szhp);
3033168404Spjd	}
3034168404Spjd
3035168404Spjd	dd->closezhp = B_TRUE;
3036219089Spjd	if (!dd->gotone)
3037219089Spjd		rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, arg);
3038168404Spjd	if (closezhp)
3039168404Spjd		zfs_close(zhp);
3040168404Spjd	return (rv);
3041168404Spjd}
3042168404Spjd
3043168404Spjd/*
3044168404Spjd * Destroys all snapshots with the given name in zhp & descendants.
3045168404Spjd */
3046168404Spjdint
3047219089Spjdzfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer)
3048168404Spjd{
3049168404Spjd	zfs_cmd_t zc = { 0 };
3050168404Spjd	int ret;
3051168404Spjd	struct destroydata dd = { 0 };
3052168404Spjd
3053168404Spjd	dd.snapname = snapname;
3054219089Spjd	(void) zfs_check_snap_cb(zhp, &dd);
3055168404Spjd
3056168404Spjd	if (!dd.gotone) {
3057168404Spjd		return (zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT,
3058168404Spjd		    dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"),
3059168404Spjd		    zhp->zfs_name, snapname));
3060168404Spjd	}
3061168404Spjd
3062168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3063168404Spjd	(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
3064219089Spjd	zc.zc_defer_destroy = defer;
3065168404Spjd
3066185029Spjd	ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY_SNAPS, &zc);
3067168404Spjd	if (ret != 0) {
3068168404Spjd		char errbuf[1024];
3069168404Spjd
3070168404Spjd		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3071168404Spjd		    "cannot destroy '%s@%s'"), zc.zc_name, snapname);
3072168404Spjd
3073168404Spjd		switch (errno) {
3074168404Spjd		case EEXIST:
3075168404Spjd			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
3076168404Spjd			    "snapshot is cloned"));
3077168404Spjd			return (zfs_error(zhp->zfs_hdl, EZFS_EXISTS, errbuf));
3078168404Spjd
3079168404Spjd		default:
3080168404Spjd			return (zfs_standard_error(zhp->zfs_hdl, errno,
3081168404Spjd			    errbuf));
3082168404Spjd		}
3083168404Spjd	}
3084168404Spjd
3085168404Spjd	return (0);
3086168404Spjd}
3087168404Spjd
3088168404Spjd/*
3089168404Spjd * Clones the given dataset.  The target must be of the same type as the source.
3090168404Spjd */
3091168404Spjdint
3092168404Spjdzfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props)
3093168404Spjd{
3094168404Spjd	zfs_cmd_t zc = { 0 };
3095168404Spjd	char parent[ZFS_MAXNAMELEN];
3096168404Spjd	int ret;
3097168404Spjd	char errbuf[1024];
3098168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
3099168404Spjd	zfs_type_t type;
3100168404Spjd	uint64_t zoned;
3101168404Spjd
3102168404Spjd	assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
3103168404Spjd
3104168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3105168404Spjd	    "cannot create '%s'"), target);
3106168404Spjd
3107168404Spjd	/* validate the target name */
3108185029Spjd	if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE))
3109168404Spjd		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3110168404Spjd
3111168404Spjd	/* validate parents exist */
3112185029Spjd	if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0)
3113168404Spjd		return (-1);
3114168404Spjd
3115168404Spjd	(void) parent_name(target, parent, sizeof (parent));
3116168404Spjd
3117168404Spjd	/* do the clone */
3118168404Spjd	if (ZFS_IS_VOLUME(zhp)) {
3119168404Spjd		zc.zc_objset_type = DMU_OST_ZVOL;
3120168404Spjd		type = ZFS_TYPE_VOLUME;
3121168404Spjd	} else {
3122168404Spjd		zc.zc_objset_type = DMU_OST_ZFS;
3123168404Spjd		type = ZFS_TYPE_FILESYSTEM;
3124168404Spjd	}
3125168404Spjd
3126168404Spjd	if (props) {
3127185029Spjd		if ((props = zfs_valid_proplist(hdl, type, props, zoned,
3128185029Spjd		    zhp, errbuf)) == NULL)
3129168404Spjd			return (-1);
3130168404Spjd
3131185029Spjd		if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) {
3132168404Spjd			nvlist_free(props);
3133168404Spjd			return (-1);
3134168404Spjd		}
3135168404Spjd
3136168404Spjd		nvlist_free(props);
3137168404Spjd	}
3138168404Spjd
3139168404Spjd	(void) strlcpy(zc.zc_name, target, sizeof (zc.zc_name));
3140168404Spjd	(void) strlcpy(zc.zc_value, zhp->zfs_name, sizeof (zc.zc_value));
3141185029Spjd	ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_CREATE, &zc);
3142168404Spjd
3143168404Spjd	zcmd_free_nvlists(&zc);
3144168404Spjd
3145168404Spjd	if (ret != 0) {
3146168404Spjd		switch (errno) {
3147168404Spjd
3148168404Spjd		case ENOENT:
3149168404Spjd			/*
3150168404Spjd			 * The parent doesn't exist.  We should have caught this
3151168404Spjd			 * above, but there may a race condition that has since
3152168404Spjd			 * destroyed the parent.
3153168404Spjd			 *
3154168404Spjd			 * At this point, we don't know whether it's the source
3155168404Spjd			 * that doesn't exist anymore, or whether the target
3156168404Spjd			 * dataset doesn't exist.
3157168404Spjd			 */
3158168404Spjd			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
3159168404Spjd			    "no such parent '%s'"), parent);
3160168404Spjd			return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf));
3161168404Spjd
3162168404Spjd		case EXDEV:
3163168404Spjd			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
3164168404Spjd			    "source and target pools differ"));
3165168404Spjd			return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET,
3166168404Spjd			    errbuf));
3167168404Spjd
3168168404Spjd		default:
3169168404Spjd			return (zfs_standard_error(zhp->zfs_hdl, errno,
3170168404Spjd			    errbuf));
3171168404Spjd		}
3172168404Spjd	}
3173168404Spjd
3174168404Spjd	return (ret);
3175168404Spjd}
3176168404Spjd
3177168404Spjd/*
3178168404Spjd * Promotes the given clone fs to be the clone parent.
3179168404Spjd */
3180168404Spjdint
3181168404Spjdzfs_promote(zfs_handle_t *zhp)
3182168404Spjd{
3183168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
3184168404Spjd	zfs_cmd_t zc = { 0 };
3185168404Spjd	char parent[MAXPATHLEN];
3186168404Spjd	int ret;
3187168404Spjd	char errbuf[1024];
3188168404Spjd
3189168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3190168404Spjd	    "cannot promote '%s'"), zhp->zfs_name);
3191168404Spjd
3192168404Spjd	if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
3193168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3194168404Spjd		    "snapshots can not be promoted"));
3195168404Spjd		return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
3196168404Spjd	}
3197168404Spjd
3198185029Spjd	(void) strlcpy(parent, zhp->zfs_dmustats.dds_origin, sizeof (parent));
3199168404Spjd	if (parent[0] == '\0') {
3200168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3201168404Spjd		    "not a cloned filesystem"));
3202168404Spjd		return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
3203168404Spjd	}
3204168404Spjd
3205185029Spjd	(void) strlcpy(zc.zc_value, zhp->zfs_dmustats.dds_origin,
3206168404Spjd	    sizeof (zc.zc_value));
3207168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3208185029Spjd	ret = zfs_ioctl(hdl, ZFS_IOC_PROMOTE, &zc);
3209168404Spjd
3210168404Spjd	if (ret != 0) {
3211168404Spjd		int save_errno = errno;
3212168404Spjd
3213168404Spjd		switch (save_errno) {
3214168404Spjd		case EEXIST:
3215219089Spjd			/* There is a conflicting snapshot name. */
3216168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3217219089Spjd			    "conflicting snapshot '%s' from parent '%s'"),
3218219089Spjd			    zc.zc_string, parent);
3219168404Spjd			return (zfs_error(hdl, EZFS_EXISTS, errbuf));
3220168404Spjd
3221168404Spjd		default:
3222168404Spjd			return (zfs_standard_error(hdl, save_errno, errbuf));
3223168404Spjd		}
3224168404Spjd	}
3225168404Spjd	return (ret);
3226168404Spjd}
3227168404Spjd
3228168404Spjd/*
3229168404Spjd * Takes a snapshot of the given dataset.
3230168404Spjd */
3231168404Spjdint
3232185029Spjdzfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive,
3233185029Spjd    nvlist_t *props)
3234168404Spjd{
3235168404Spjd	const char *delim;
3236185029Spjd	char parent[ZFS_MAXNAMELEN];
3237168404Spjd	zfs_handle_t *zhp;
3238168404Spjd	zfs_cmd_t zc = { 0 };
3239168404Spjd	int ret;
3240168404Spjd	char errbuf[1024];
3241168404Spjd
3242168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3243168404Spjd	    "cannot snapshot '%s'"), path);
3244168404Spjd
3245168404Spjd	/* validate the target name */
3246185029Spjd	if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE))
3247168404Spjd		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3248168404Spjd
3249185029Spjd	if (props) {
3250185029Spjd		if ((props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT,
3251185029Spjd		    props, B_FALSE, NULL, errbuf)) == NULL)
3252185029Spjd			return (-1);
3253185029Spjd
3254185029Spjd		if (zcmd_write_src_nvlist(hdl, &zc, props) != 0) {
3255185029Spjd			nvlist_free(props);
3256185029Spjd			return (-1);
3257185029Spjd		}
3258185029Spjd
3259185029Spjd		nvlist_free(props);
3260185029Spjd	}
3261185029Spjd
3262168404Spjd	/* make sure the parent exists and is of the appropriate type */
3263168404Spjd	delim = strchr(path, '@');
3264168404Spjd	(void) strncpy(parent, path, delim - path);
3265168404Spjd	parent[delim - path] = '\0';
3266168404Spjd
3267168404Spjd	if ((zhp = zfs_open(hdl, parent, ZFS_TYPE_FILESYSTEM |
3268168404Spjd	    ZFS_TYPE_VOLUME)) == NULL) {
3269185029Spjd		zcmd_free_nvlists(&zc);
3270168404Spjd		return (-1);
3271168404Spjd	}
3272168404Spjd
3273168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3274168404Spjd	(void) strlcpy(zc.zc_value, delim+1, sizeof (zc.zc_value));
3275185029Spjd	if (ZFS_IS_VOLUME(zhp))
3276185029Spjd		zc.zc_objset_type = DMU_OST_ZVOL;
3277185029Spjd	else
3278185029Spjd		zc.zc_objset_type = DMU_OST_ZFS;
3279168404Spjd	zc.zc_cookie = recursive;
3280185029Spjd	ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SNAPSHOT, &zc);
3281168404Spjd
3282185029Spjd	zcmd_free_nvlists(&zc);
3283185029Spjd
3284168404Spjd	/*
3285168404Spjd	 * if it was recursive, the one that actually failed will be in
3286168404Spjd	 * zc.zc_name.
3287168404Spjd	 */
3288219089Spjd	if (ret != 0) {
3289185029Spjd		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3290185029Spjd		    "cannot create snapshot '%s@%s'"), zc.zc_name, zc.zc_value);
3291219089Spjd		(void) zfs_standard_error(hdl, errno, errbuf);
3292168404Spjd	}
3293168404Spjd
3294168404Spjd	zfs_close(zhp);
3295168404Spjd
3296168404Spjd	return (ret);
3297168404Spjd}
3298168404Spjd
3299168404Spjd/*
3300168404Spjd * Destroy any more recent snapshots.  We invoke this callback on any dependents
3301168404Spjd * of the snapshot first.  If the 'cb_dependent' member is non-zero, then this
3302168404Spjd * is a dependent and we should just destroy it without checking the transaction
3303168404Spjd * group.
3304168404Spjd */
3305168404Spjdtypedef struct rollback_data {
3306168404Spjd	const char	*cb_target;		/* the snapshot */
3307168404Spjd	uint64_t	cb_create;		/* creation time reference */
3308185029Spjd	boolean_t	cb_error;
3309168404Spjd	boolean_t	cb_dependent;
3310185029Spjd	boolean_t	cb_force;
3311168404Spjd} rollback_data_t;
3312168404Spjd
3313168404Spjdstatic int
3314168404Spjdrollback_destroy(zfs_handle_t *zhp, void *data)
3315168404Spjd{
3316168404Spjd	rollback_data_t *cbp = data;
3317168404Spjd
3318168404Spjd	if (!cbp->cb_dependent) {
3319168404Spjd		if (strcmp(zhp->zfs_name, cbp->cb_target) != 0 &&
3320168404Spjd		    zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
3321168404Spjd		    zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
3322168404Spjd		    cbp->cb_create) {
3323185029Spjd			char *logstr;
3324168404Spjd
3325168404Spjd			cbp->cb_dependent = B_TRUE;
3326185029Spjd			cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE,
3327185029Spjd			    rollback_destroy, cbp);
3328168404Spjd			cbp->cb_dependent = B_FALSE;
3329168404Spjd
3330185029Spjd			logstr = zhp->zfs_hdl->libzfs_log_str;
3331185029Spjd			zhp->zfs_hdl->libzfs_log_str = NULL;
3332219089Spjd			cbp->cb_error |= zfs_destroy(zhp, B_FALSE);
3333185029Spjd			zhp->zfs_hdl->libzfs_log_str = logstr;
3334168404Spjd		}
3335168404Spjd	} else {
3336185029Spjd		/* We must destroy this clone; first unmount it */
3337185029Spjd		prop_changelist_t *clp;
3338185029Spjd
3339185029Spjd		clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
3340185029Spjd		    cbp->cb_force ? MS_FORCE: 0);
3341185029Spjd		if (clp == NULL || changelist_prefix(clp) != 0) {
3342185029Spjd			cbp->cb_error = B_TRUE;
3343185029Spjd			zfs_close(zhp);
3344185029Spjd			return (0);
3345185029Spjd		}
3346219089Spjd		if (zfs_destroy(zhp, B_FALSE) != 0)
3347185029Spjd			cbp->cb_error = B_TRUE;
3348168404Spjd		else
3349185029Spjd			changelist_remove(clp, zhp->zfs_name);
3350185029Spjd		(void) changelist_postfix(clp);
3351185029Spjd		changelist_free(clp);
3352168404Spjd	}
3353168404Spjd
3354168404Spjd	zfs_close(zhp);
3355168404Spjd	return (0);
3356168404Spjd}
3357168404Spjd
3358168404Spjd/*
3359168404Spjd * Given a dataset, rollback to a specific snapshot, discarding any
3360168404Spjd * data changes since then and making it the active dataset.
3361168404Spjd *
3362168404Spjd * Any snapshots more recent than the target are destroyed, along with
3363168404Spjd * their dependents.
3364168404Spjd */
3365168404Spjdint
3366185029Spjdzfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force)
3367168404Spjd{
3368168404Spjd	rollback_data_t cb = { 0 };
3369185029Spjd	int err;
3370185029Spjd	zfs_cmd_t zc = { 0 };
3371185029Spjd	boolean_t restore_resv = 0;
3372185029Spjd	uint64_t old_volsize, new_volsize;
3373185029Spjd	zfs_prop_t resv_prop;
3374168404Spjd
3375185029Spjd	assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM ||
3376185029Spjd	    zhp->zfs_type == ZFS_TYPE_VOLUME);
3377168404Spjd
3378168404Spjd	/*
3379168404Spjd	 * Destroy all recent snapshots and its dependends.
3380168404Spjd	 */
3381185029Spjd	cb.cb_force = force;
3382168404Spjd	cb.cb_target = snap->zfs_name;
3383168404Spjd	cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
3384168404Spjd	(void) zfs_iter_children(zhp, rollback_destroy, &cb);
3385168404Spjd
3386185029Spjd	if (cb.cb_error)
3387185029Spjd		return (-1);
3388168404Spjd
3389168404Spjd	/*
3390168404Spjd	 * Now that we have verified that the snapshot is the latest,
3391168404Spjd	 * rollback to the given snapshot.
3392168404Spjd	 */
3393168404Spjd
3394185029Spjd	if (zhp->zfs_type == ZFS_TYPE_VOLUME) {
3395185029Spjd		if (zfs_which_resv_prop(zhp, &resv_prop) < 0)
3396185029Spjd			return (-1);
3397185029Spjd		old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
3398185029Spjd		restore_resv =
3399185029Spjd		    (old_volsize == zfs_prop_get_int(zhp, resv_prop));
3400168404Spjd	}
3401168404Spjd
3402185029Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3403185029Spjd
3404185029Spjd	if (ZFS_IS_VOLUME(zhp))
3405185029Spjd		zc.zc_objset_type = DMU_OST_ZVOL;
3406185029Spjd	else
3407185029Spjd		zc.zc_objset_type = DMU_OST_ZFS;
3408185029Spjd
3409168404Spjd	/*
3410185029Spjd	 * We rely on zfs_iter_children() to verify that there are no
3411185029Spjd	 * newer snapshots for the given dataset.  Therefore, we can
3412185029Spjd	 * simply pass the name on to the ioctl() call.  There is still
3413185029Spjd	 * an unlikely race condition where the user has taken a
3414185029Spjd	 * snapshot since we verified that this was the most recent.
3415185029Spjd	 *
3416168404Spjd	 */
3417185029Spjd	if ((err = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_ROLLBACK, &zc)) != 0) {
3418185029Spjd		(void) zfs_standard_error_fmt(zhp->zfs_hdl, errno,
3419185029Spjd		    dgettext(TEXT_DOMAIN, "cannot rollback '%s'"),
3420185029Spjd		    zhp->zfs_name);
3421185029Spjd		return (err);
3422185029Spjd	}
3423168404Spjd
3424185029Spjd	/*
3425185029Spjd	 * For volumes, if the pre-rollback volsize matched the pre-
3426185029Spjd	 * rollback reservation and the volsize has changed then set
3427185029Spjd	 * the reservation property to the post-rollback volsize.
3428185029Spjd	 * Make a new handle since the rollback closed the dataset.
3429185029Spjd	 */
3430185029Spjd	if ((zhp->zfs_type == ZFS_TYPE_VOLUME) &&
3431185029Spjd	    (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) {
3432185029Spjd		if (restore_resv) {
3433185029Spjd			new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
3434185029Spjd			if (old_volsize != new_volsize)
3435185029Spjd				err = zfs_prop_set_int(zhp, resv_prop,
3436185029Spjd				    new_volsize);
3437185029Spjd		}
3438185029Spjd		zfs_close(zhp);
3439185029Spjd	}
3440185029Spjd	return (err);
3441168404Spjd}
3442168404Spjd
3443168404Spjd/*
3444168404Spjd * Iterate over all dependents for a given dataset.  This includes both
3445168404Spjd * hierarchical dependents (children) and data dependents (snapshots and
3446168404Spjd * clones).  The bulk of the processing occurs in get_dependents() in
3447168404Spjd * libzfs_graph.c.
3448168404Spjd */
3449168404Spjdint
3450168404Spjdzfs_iter_dependents(zfs_handle_t *zhp, boolean_t allowrecursion,
3451168404Spjd    zfs_iter_f func, void *data)
3452168404Spjd{
3453168404Spjd	char **dependents;
3454168404Spjd	size_t count;
3455168404Spjd	int i;
3456168404Spjd	zfs_handle_t *child;
3457168404Spjd	int ret = 0;
3458168404Spjd
3459168404Spjd	if (get_dependents(zhp->zfs_hdl, allowrecursion, zhp->zfs_name,
3460168404Spjd	    &dependents, &count) != 0)
3461168404Spjd		return (-1);
3462168404Spjd
3463168404Spjd	for (i = 0; i < count; i++) {
3464168404Spjd		if ((child = make_dataset_handle(zhp->zfs_hdl,
3465168404Spjd		    dependents[i])) == NULL)
3466168404Spjd			continue;
3467168404Spjd
3468168404Spjd		if ((ret = func(child, data)) != 0)
3469168404Spjd			break;
3470168404Spjd	}
3471168404Spjd
3472168404Spjd	for (i = 0; i < count; i++)
3473168404Spjd		free(dependents[i]);
3474168404Spjd	free(dependents);
3475168404Spjd
3476168404Spjd	return (ret);
3477168404Spjd}
3478168404Spjd
3479168404Spjd/*
3480168404Spjd * Renames the given dataset.
3481168404Spjd */
3482168404Spjdint
3483185029Spjdzfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive)
3484168404Spjd{
3485168404Spjd	int ret;
3486168404Spjd	zfs_cmd_t zc = { 0 };
3487168404Spjd	char *delim;
3488168676Spjd	prop_changelist_t *cl = NULL;
3489168676Spjd	zfs_handle_t *zhrp = NULL;
3490168676Spjd	char *parentname = NULL;
3491168404Spjd	char parent[ZFS_MAXNAMELEN];
3492168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
3493168404Spjd	char errbuf[1024];
3494168404Spjd
3495168404Spjd	/* if we have the same exact name, just return success */
3496168404Spjd	if (strcmp(zhp->zfs_name, target) == 0)
3497168404Spjd		return (0);
3498168404Spjd
3499168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3500168404Spjd	    "cannot rename to '%s'"), target);
3501168404Spjd
3502168404Spjd	/*
3503168404Spjd	 * Make sure the target name is valid
3504168404Spjd	 */
3505168404Spjd	if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
3506168404Spjd		if ((strchr(target, '@') == NULL) ||
3507168404Spjd		    *target == '@') {
3508168404Spjd			/*
3509168404Spjd			 * Snapshot target name is abbreviated,
3510168404Spjd			 * reconstruct full dataset name
3511168404Spjd			 */
3512168404Spjd			(void) strlcpy(parent, zhp->zfs_name,
3513168404Spjd			    sizeof (parent));
3514168404Spjd			delim = strchr(parent, '@');
3515168404Spjd			if (strchr(target, '@') == NULL)
3516168404Spjd				*(++delim) = '\0';
3517168404Spjd			else
3518168404Spjd				*delim = '\0';
3519168404Spjd			(void) strlcat(parent, target, sizeof (parent));
3520168404Spjd			target = parent;
3521168404Spjd		} else {
3522168404Spjd			/*
3523168404Spjd			 * Make sure we're renaming within the same dataset.
3524168404Spjd			 */
3525168404Spjd			delim = strchr(target, '@');
3526168404Spjd			if (strncmp(zhp->zfs_name, target, delim - target)
3527168404Spjd			    != 0 || zhp->zfs_name[delim - target] != '@') {
3528168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3529168404Spjd				    "snapshots must be part of same "
3530168404Spjd				    "dataset"));
3531168404Spjd				return (zfs_error(hdl, EZFS_CROSSTARGET,
3532168404Spjd				    errbuf));
3533168404Spjd			}
3534168404Spjd		}
3535185029Spjd		if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE))
3536168404Spjd			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3537168404Spjd	} else {
3538168676Spjd		if (recursive) {
3539168676Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3540168676Spjd			    "recursive rename must be a snapshot"));
3541168676Spjd			return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
3542168676Spjd		}
3543168676Spjd
3544185029Spjd		if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE))
3545168404Spjd			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3546168404Spjd
3547168404Spjd		/* validate parents */
3548219089Spjd		if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0)
3549168404Spjd			return (-1);
3550168404Spjd
3551168404Spjd		/* make sure we're in the same pool */
3552168404Spjd		verify((delim = strchr(target, '/')) != NULL);
3553168404Spjd		if (strncmp(zhp->zfs_name, target, delim - target) != 0 ||
3554168404Spjd		    zhp->zfs_name[delim - target] != '/') {
3555168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3556168404Spjd			    "datasets must be within same pool"));
3557168404Spjd			return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf));
3558168404Spjd		}
3559168404Spjd
3560168404Spjd		/* new name cannot be a child of the current dataset name */
3561219089Spjd		if (is_descendant(zhp->zfs_name, target)) {
3562168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3563219089Spjd			    "New dataset name cannot be a descendant of "
3564168404Spjd			    "current dataset name"));
3565168404Spjd			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3566168404Spjd		}
3567168404Spjd	}
3568168404Spjd
3569168404Spjd	(void) snprintf(errbuf, sizeof (errbuf),
3570168404Spjd	    dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name);
3571168404Spjd
3572168404Spjd	if (getzoneid() == GLOBAL_ZONEID &&
3573168404Spjd	    zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) {
3574168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3575168404Spjd		    "dataset is used in a non-global zone"));
3576168404Spjd		return (zfs_error(hdl, EZFS_ZONED, errbuf));
3577168404Spjd	}
3578168404Spjd
3579168676Spjd	if (recursive) {
3580168404Spjd
3581185029Spjd		parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name);
3582185029Spjd		if (parentname == NULL) {
3583185029Spjd			ret = -1;
3584185029Spjd			goto error;
3585185029Spjd		}
3586168676Spjd		delim = strchr(parentname, '@');
3587168676Spjd		*delim = '\0';
3588185029Spjd		zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET);
3589168676Spjd		if (zhrp == NULL) {
3590185029Spjd			ret = -1;
3591185029Spjd			goto error;
3592168676Spjd		}
3593168676Spjd
3594168676Spjd	} else {
3595185029Spjd		if ((cl = changelist_gather(zhp, ZFS_PROP_NAME, 0, 0)) == NULL)
3596168676Spjd			return (-1);
3597168676Spjd
3598168676Spjd		if (changelist_haszonedchild(cl)) {
3599168676Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3600168676Spjd			    "child dataset with inherited mountpoint is used "
3601168676Spjd			    "in a non-global zone"));
3602168676Spjd			(void) zfs_error(hdl, EZFS_ZONED, errbuf);
3603168676Spjd			goto error;
3604168676Spjd		}
3605168676Spjd
3606168676Spjd		if ((ret = changelist_prefix(cl)) != 0)
3607168676Spjd			goto error;
3608168404Spjd	}
3609168404Spjd
3610168404Spjd	if (ZFS_IS_VOLUME(zhp))
3611168404Spjd		zc.zc_objset_type = DMU_OST_ZVOL;
3612168404Spjd	else
3613168404Spjd		zc.zc_objset_type = DMU_OST_ZFS;
3614168404Spjd
3615168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3616168404Spjd	(void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value));
3617168404Spjd
3618168676Spjd	zc.zc_cookie = recursive;
3619168676Spjd
3620185029Spjd	if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) {
3621168676Spjd		/*
3622168676Spjd		 * if it was recursive, the one that actually failed will
3623168676Spjd		 * be in zc.zc_name
3624168676Spjd		 */
3625168676Spjd		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3626185029Spjd		    "cannot rename '%s'"), zc.zc_name);
3627168404Spjd
3628168676Spjd		if (recursive && errno == EEXIST) {
3629168676Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3630168676Spjd			    "a child dataset already has a snapshot "
3631168676Spjd			    "with the new name"));
3632185029Spjd			(void) zfs_error(hdl, EZFS_EXISTS, errbuf);
3633168676Spjd		} else {
3634168676Spjd			(void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf);
3635168676Spjd		}
3636168676Spjd
3637168404Spjd		/*
3638168404Spjd		 * On failure, we still want to remount any filesystems that
3639168404Spjd		 * were previously mounted, so we don't alter the system state.
3640168404Spjd		 */
3641219089Spjd		if (!recursive)
3642168676Spjd			(void) changelist_postfix(cl);
3643168404Spjd	} else {
3644219089Spjd		if (!recursive) {
3645168676Spjd			changelist_rename(cl, zfs_get_name(zhp), target);
3646168676Spjd			ret = changelist_postfix(cl);
3647168676Spjd		}
3648168404Spjd	}
3649168404Spjd
3650168404Spjderror:
3651168676Spjd	if (parentname) {
3652168676Spjd		free(parentname);
3653168676Spjd	}
3654168676Spjd	if (zhrp) {
3655168676Spjd		zfs_close(zhrp);
3656168676Spjd	}
3657168676Spjd	if (cl) {
3658168676Spjd		changelist_free(cl);
3659168676Spjd	}
3660168404Spjd	return (ret);
3661168404Spjd}
3662168404Spjd
3663219089Spjdnvlist_t *
3664219089Spjdzfs_get_user_props(zfs_handle_t *zhp)
3665168404Spjd{
3666219089Spjd	return (zhp->zfs_user_props);
3667168676Spjd}
3668168676Spjd
3669168404Spjdnvlist_t *
3670219089Spjdzfs_get_recvd_props(zfs_handle_t *zhp)
3671168404Spjd{
3672219089Spjd	if (zhp->zfs_recvd_props == NULL)
3673219089Spjd		if (get_recvd_props_ioctl(zhp) != 0)
3674219089Spjd			return (NULL);
3675219089Spjd	return (zhp->zfs_recvd_props);
3676168404Spjd}
3677168404Spjd
3678168404Spjd/*
3679168404Spjd * This function is used by 'zfs list' to determine the exact set of columns to
3680168404Spjd * display, and their maximum widths.  This does two main things:
3681168404Spjd *
3682168404Spjd *      - If this is a list of all properties, then expand the list to include
3683168404Spjd *        all native properties, and set a flag so that for each dataset we look
3684168404Spjd *        for new unique user properties and add them to the list.
3685168404Spjd *
3686168404Spjd *      - For non fixed-width properties, keep track of the maximum width seen
3687219089Spjd *        so that we can size the column appropriately. If the user has
3688219089Spjd *        requested received property values, we also need to compute the width
3689219089Spjd *        of the RECEIVED column.
3690168404Spjd */
3691168404Spjdint
3692219089Spjdzfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received)
3693168404Spjd{
3694168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
3695185029Spjd	zprop_list_t *entry;
3696185029Spjd	zprop_list_t **last, **start;
3697168404Spjd	nvlist_t *userprops, *propval;
3698168404Spjd	nvpair_t *elem;
3699168404Spjd	char *strval;
3700168404Spjd	char buf[ZFS_MAXPROPLEN];
3701168404Spjd
3702185029Spjd	if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0)
3703168404Spjd		return (-1);
3704168404Spjd
3705168404Spjd	userprops = zfs_get_user_props(zhp);
3706168404Spjd
3707168404Spjd	entry = *plp;
3708168404Spjd	if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) {
3709168404Spjd		/*
3710168404Spjd		 * Go through and add any user properties as necessary.  We
3711168404Spjd		 * start by incrementing our list pointer to the first
3712168404Spjd		 * non-native property.
3713168404Spjd		 */
3714168404Spjd		start = plp;
3715168404Spjd		while (*start != NULL) {
3716185029Spjd			if ((*start)->pl_prop == ZPROP_INVAL)
3717168404Spjd				break;
3718168404Spjd			start = &(*start)->pl_next;
3719168404Spjd		}
3720168404Spjd
3721168404Spjd		elem = NULL;
3722168404Spjd		while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) {
3723168404Spjd			/*
3724168404Spjd			 * See if we've already found this property in our list.
3725168404Spjd			 */
3726168404Spjd			for (last = start; *last != NULL;
3727168404Spjd			    last = &(*last)->pl_next) {
3728168404Spjd				if (strcmp((*last)->pl_user_prop,
3729168404Spjd				    nvpair_name(elem)) == 0)
3730168404Spjd					break;
3731168404Spjd			}
3732168404Spjd
3733168404Spjd			if (*last == NULL) {
3734168404Spjd				if ((entry = zfs_alloc(hdl,
3735185029Spjd				    sizeof (zprop_list_t))) == NULL ||
3736168404Spjd				    ((entry->pl_user_prop = zfs_strdup(hdl,
3737168404Spjd				    nvpair_name(elem)))) == NULL) {
3738168404Spjd					free(entry);
3739168404Spjd					return (-1);
3740168404Spjd				}
3741168404Spjd
3742185029Spjd				entry->pl_prop = ZPROP_INVAL;
3743168404Spjd				entry->pl_width = strlen(nvpair_name(elem));
3744168404Spjd				entry->pl_all = B_TRUE;
3745168404Spjd				*last = entry;
3746168404Spjd			}
3747168404Spjd		}
3748168404Spjd	}
3749168404Spjd
3750168404Spjd	/*
3751168404Spjd	 * Now go through and check the width of any non-fixed columns
3752168404Spjd	 */
3753168404Spjd	for (entry = *plp; entry != NULL; entry = entry->pl_next) {
3754168404Spjd		if (entry->pl_fixed)
3755168404Spjd			continue;
3756168404Spjd
3757185029Spjd		if (entry->pl_prop != ZPROP_INVAL) {
3758168404Spjd			if (zfs_prop_get(zhp, entry->pl_prop,
3759168404Spjd			    buf, sizeof (buf), NULL, NULL, 0, B_FALSE) == 0) {
3760168404Spjd				if (strlen(buf) > entry->pl_width)
3761168404Spjd					entry->pl_width = strlen(buf);
3762168404Spjd			}
3763219089Spjd			if (received && zfs_prop_get_recvd(zhp,
3764219089Spjd			    zfs_prop_to_name(entry->pl_prop),
3765219089Spjd			    buf, sizeof (buf), B_FALSE) == 0)
3766219089Spjd				if (strlen(buf) > entry->pl_recvd_width)
3767219089Spjd					entry->pl_recvd_width = strlen(buf);
3768219089Spjd		} else {
3769219089Spjd			if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop,
3770219089Spjd			    &propval) == 0) {
3771219089Spjd				verify(nvlist_lookup_string(propval,
3772219089Spjd				    ZPROP_VALUE, &strval) == 0);
3773219089Spjd				if (strlen(strval) > entry->pl_width)
3774219089Spjd					entry->pl_width = strlen(strval);
3775219089Spjd			}
3776219089Spjd			if (received && zfs_prop_get_recvd(zhp,
3777219089Spjd			    entry->pl_user_prop,
3778219089Spjd			    buf, sizeof (buf), B_FALSE) == 0)
3779219089Spjd				if (strlen(buf) > entry->pl_recvd_width)
3780219089Spjd					entry->pl_recvd_width = strlen(buf);
3781168404Spjd		}
3782168404Spjd	}
3783168404Spjd
3784168404Spjd	return (0);
3785168404Spjd}
3786168404Spjd
3787185029Spjdint
3788185029Spjdzfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path,
3789209962Smm    char *resource, void *export, void *sharetab,
3790209962Smm    int sharemax, zfs_share_op_t operation)
3791185029Spjd{
3792185029Spjd	zfs_cmd_t zc = { 0 };
3793185029Spjd	int error;
3794185029Spjd
3795185029Spjd	(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
3796185029Spjd	(void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value));
3797209962Smm	if (resource)
3798209962Smm		(void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string));
3799185029Spjd	zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab;
3800185029Spjd	zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export;
3801185029Spjd	zc.zc_share.z_sharetype = operation;
3802185029Spjd	zc.zc_share.z_sharemax = sharemax;
3803185029Spjd	error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc);
3804185029Spjd	return (error);
3805185029Spjd}
3806185029Spjd
3807205198Sdelphijvoid
3808205198Sdelphijzfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props)
3809205198Sdelphij{
3810205198Sdelphij	nvpair_t *curr;
3811205198Sdelphij
3812205198Sdelphij	/*
3813205198Sdelphij	 * Keep a reference to the props-table against which we prune the
3814205198Sdelphij	 * properties.
3815205198Sdelphij	 */
3816205198Sdelphij	zhp->zfs_props_table = props;
3817205198Sdelphij
3818205198Sdelphij	curr = nvlist_next_nvpair(zhp->zfs_props, NULL);
3819205198Sdelphij
3820205198Sdelphij	while (curr) {
3821205198Sdelphij		zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr));
3822205198Sdelphij		nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr);
3823205198Sdelphij
3824206199Sdelphij		/*
3825219089Spjd		 * User properties will result in ZPROP_INVAL, and since we
3826219089Spjd		 * only know how to prune standard ZFS properties, we always
3827219089Spjd		 * leave these in the list.  This can also happen if we
3828219089Spjd		 * encounter an unknown DSL property (when running older
3829219089Spjd		 * software, for example).
3830206199Sdelphij		 */
3831206199Sdelphij		if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE)
3832205198Sdelphij			(void) nvlist_remove(zhp->zfs_props,
3833205198Sdelphij			    nvpair_name(curr), nvpair_type(curr));
3834205198Sdelphij		curr = next;
3835205198Sdelphij	}
3836205198Sdelphij}
3837205198Sdelphij
3838209962Smm#ifdef sun
3839209962Smmstatic int
3840209962Smmzfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path,
3841209962Smm    zfs_smb_acl_op_t cmd, char *resource1, char *resource2)
3842209962Smm{
3843209962Smm	zfs_cmd_t zc = { 0 };
3844209962Smm	nvlist_t *nvlist = NULL;
3845209962Smm	int error;
3846209962Smm
3847209962Smm	(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
3848209962Smm	(void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value));
3849209962Smm	zc.zc_cookie = (uint64_t)cmd;
3850209962Smm
3851209962Smm	if (cmd == ZFS_SMB_ACL_RENAME) {
3852209962Smm		if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) {
3853209962Smm			(void) no_memory(hdl);
3854209962Smm			return (NULL);
3855209962Smm		}
3856209962Smm	}
3857209962Smm
3858209962Smm	switch (cmd) {
3859209962Smm	case ZFS_SMB_ACL_ADD:
3860209962Smm	case ZFS_SMB_ACL_REMOVE:
3861209962Smm		(void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string));
3862209962Smm		break;
3863209962Smm	case ZFS_SMB_ACL_RENAME:
3864209962Smm		if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC,
3865209962Smm		    resource1) != 0) {
3866209962Smm				(void) no_memory(hdl);
3867209962Smm				return (-1);
3868209962Smm		}
3869209962Smm		if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET,
3870209962Smm		    resource2) != 0) {
3871209962Smm				(void) no_memory(hdl);
3872209962Smm				return (-1);
3873209962Smm		}
3874209962Smm		if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) {
3875209962Smm			nvlist_free(nvlist);
3876209962Smm			return (-1);
3877209962Smm		}
3878209962Smm		break;
3879209962Smm	case ZFS_SMB_ACL_PURGE:
3880209962Smm		break;
3881209962Smm	default:
3882209962Smm		return (-1);
3883209962Smm	}
3884209962Smm	error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc);
3885209962Smm	if (nvlist)
3886209962Smm		nvlist_free(nvlist);
3887209962Smm	return (error);
3888209962Smm}
3889209962Smm
3890209962Smmint
3891209962Smmzfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset,
3892209962Smm    char *path, char *resource)
3893209962Smm{
3894209962Smm	return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD,
3895209962Smm	    resource, NULL));
3896209962Smm}
3897209962Smm
3898209962Smmint
3899209962Smmzfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset,
3900209962Smm    char *path, char *resource)
3901209962Smm{
3902209962Smm	return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE,
3903209962Smm	    resource, NULL));
3904209962Smm}
3905209962Smm
3906209962Smmint
3907209962Smmzfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path)
3908209962Smm{
3909209962Smm	return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE,
3910209962Smm	    NULL, NULL));
3911209962Smm}
3912209962Smm
3913209962Smmint
3914209962Smmzfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path,
3915209962Smm    char *oldname, char *newname)
3916209962Smm{
3917209962Smm	return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME,
3918209962Smm	    oldname, newname));
3919209962Smm}
3920209962Smm#endif	/* sun */
3921209962Smm
3922209962Smmint
3923209962Smmzfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type,
3924209962Smm    zfs_userspace_cb_t func, void *arg)
3925209962Smm{
3926209962Smm	zfs_cmd_t zc = { 0 };
3927209962Smm	int error;
3928209962Smm	zfs_useracct_t buf[100];
3929209962Smm
3930209962Smm	(void) strncpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3931209962Smm
3932209962Smm	zc.zc_objset_type = type;
3933209962Smm	zc.zc_nvlist_dst = (uintptr_t)buf;
3934209962Smm
3935209962Smm	/* CONSTCOND */
3936209962Smm	while (1) {
3937209962Smm		zfs_useracct_t *zua = buf;
3938209962Smm
3939209962Smm		zc.zc_nvlist_dst_size = sizeof (buf);
3940209962Smm		error = ioctl(zhp->zfs_hdl->libzfs_fd,
3941209962Smm		    ZFS_IOC_USERSPACE_MANY, &zc);
3942209962Smm		if (error || zc.zc_nvlist_dst_size == 0)
3943209962Smm			break;
3944209962Smm
3945209962Smm		while (zc.zc_nvlist_dst_size > 0) {
3946209962Smm			error = func(arg, zua->zu_domain, zua->zu_rid,
3947209962Smm			    zua->zu_space);
3948209962Smm			if (error != 0)
3949209962Smm				return (error);
3950209962Smm			zua++;
3951209962Smm			zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t);
3952209962Smm		}
3953209962Smm	}
3954209962Smm
3955209962Smm	return (error);
3956209962Smm}
3957209962Smm
3958219089Spjdint
3959219089Spjdzfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag,
3960219089Spjd    boolean_t recursive, boolean_t temphold, boolean_t enoent_ok,
3961219089Spjd    int cleanup_fd, uint64_t dsobj, uint64_t createtxg)
3962219089Spjd{
3963219089Spjd	zfs_cmd_t zc = { 0 };
3964219089Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
3965219089Spjd
3966219089Spjd	ASSERT(!recursive || dsobj == 0);
3967219089Spjd
3968219089Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3969219089Spjd	(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
3970219089Spjd	if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string))
3971219089Spjd	    >= sizeof (zc.zc_string))
3972219089Spjd		return (zfs_error(hdl, EZFS_TAGTOOLONG, tag));
3973219089Spjd	zc.zc_cookie = recursive;
3974219089Spjd	zc.zc_temphold = temphold;
3975219089Spjd	zc.zc_cleanup_fd = cleanup_fd;
3976219089Spjd	zc.zc_sendobj = dsobj;
3977219089Spjd	zc.zc_createtxg = createtxg;
3978219089Spjd
3979219089Spjd	if (zfs_ioctl(hdl, ZFS_IOC_HOLD, &zc) != 0) {
3980219089Spjd		char errbuf[ZFS_MAXNAMELEN+32];
3981219089Spjd
3982219089Spjd		/*
3983219089Spjd		 * if it was recursive, the one that actually failed will be in
3984219089Spjd		 * zc.zc_name.
3985219089Spjd		 */
3986219089Spjd		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3987219089Spjd		    "cannot hold '%s@%s'"), zc.zc_name, snapname);
3988219089Spjd		switch (errno) {
3989219089Spjd		case E2BIG:
3990219089Spjd			/*
3991219089Spjd			 * Temporary tags wind up having the ds object id
3992219089Spjd			 * prepended. So even if we passed the length check
3993219089Spjd			 * above, it's still possible for the tag to wind
3994219089Spjd			 * up being slightly too long.
3995219089Spjd			 */
3996219089Spjd			return (zfs_error(hdl, EZFS_TAGTOOLONG, errbuf));
3997219089Spjd		case ENOTSUP:
3998219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3999219089Spjd			    "pool must be upgraded"));
4000219089Spjd			return (zfs_error(hdl, EZFS_BADVERSION, errbuf));
4001219089Spjd		case EINVAL:
4002219089Spjd			return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
4003219089Spjd		case EEXIST:
4004219089Spjd			return (zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf));
4005219089Spjd		case ENOENT:
4006219089Spjd			if (enoent_ok)
4007219089Spjd				return (ENOENT);
4008219089Spjd			/* FALLTHROUGH */
4009219089Spjd		default:
4010219089Spjd			return (zfs_standard_error_fmt(hdl, errno, errbuf));
4011219089Spjd		}
4012219089Spjd	}
4013219089Spjd
4014219089Spjd	return (0);
4015219089Spjd}
4016219089Spjd
4017219089Spjdint
4018219089Spjdzfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag,
4019219089Spjd    boolean_t recursive)
4020219089Spjd{
4021219089Spjd	zfs_cmd_t zc = { 0 };
4022219089Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
4023219089Spjd
4024219089Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
4025219089Spjd	(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
4026219089Spjd	if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string))
4027219089Spjd	    >= sizeof (zc.zc_string))
4028219089Spjd		return (zfs_error(hdl, EZFS_TAGTOOLONG, tag));
4029219089Spjd	zc.zc_cookie = recursive;
4030219089Spjd
4031219089Spjd	if (zfs_ioctl(hdl, ZFS_IOC_RELEASE, &zc) != 0) {
4032219089Spjd		char errbuf[ZFS_MAXNAMELEN+32];
4033219089Spjd
4034219089Spjd		/*
4035219089Spjd		 * if it was recursive, the one that actually failed will be in
4036219089Spjd		 * zc.zc_name.
4037219089Spjd		 */
4038219089Spjd		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
4039219089Spjd		    "cannot release '%s' from '%s@%s'"), tag, zc.zc_name,
4040219089Spjd		    snapname);
4041219089Spjd		switch (errno) {
4042219089Spjd		case ESRCH:
4043219089Spjd			return (zfs_error(hdl, EZFS_REFTAG_RELE, errbuf));
4044219089Spjd		case ENOTSUP:
4045219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4046219089Spjd			    "pool must be upgraded"));
4047219089Spjd			return (zfs_error(hdl, EZFS_BADVERSION, errbuf));
4048219089Spjd		case EINVAL:
4049219089Spjd			return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
4050219089Spjd		default:
4051219089Spjd			return (zfs_standard_error_fmt(hdl, errno, errbuf));
4052219089Spjd		}
4053219089Spjd	}
4054219089Spjd
4055219089Spjd	return (0);
4056219089Spjd}
4057219089Spjd
4058219089Spjdint
4059219089Spjdzfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl)
4060219089Spjd{
4061219089Spjd	zfs_cmd_t zc = { 0 };
4062219089Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
4063219089Spjd	int nvsz = 2048;
4064219089Spjd	void *nvbuf;
4065219089Spjd	int err = 0;
4066219089Spjd	char errbuf[ZFS_MAXNAMELEN+32];
4067219089Spjd
4068219089Spjd	assert(zhp->zfs_type == ZFS_TYPE_VOLUME ||
4069219089Spjd	    zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
4070219089Spjd
4071219089Spjdtryagain:
4072219089Spjd
4073219089Spjd	nvbuf = malloc(nvsz);
4074219089Spjd	if (nvbuf == NULL) {
4075219089Spjd		err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno)));
4076219089Spjd		goto out;
4077219089Spjd	}
4078219089Spjd
4079219089Spjd	zc.zc_nvlist_dst_size = nvsz;
4080219089Spjd	zc.zc_nvlist_dst = (uintptr_t)nvbuf;
4081219089Spjd
4082219089Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN);
4083219089Spjd
4084219089Spjd	if (zfs_ioctl(hdl, ZFS_IOC_GET_FSACL, &zc) != 0) {
4085219089Spjd		(void) snprintf(errbuf, sizeof (errbuf),
4086219089Spjd		    dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"),
4087219089Spjd		    zc.zc_name);
4088219089Spjd		switch (errno) {
4089219089Spjd		case ENOMEM:
4090219089Spjd			free(nvbuf);
4091219089Spjd			nvsz = zc.zc_nvlist_dst_size;
4092219089Spjd			goto tryagain;
4093219089Spjd
4094219089Spjd		case ENOTSUP:
4095219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4096219089Spjd			    "pool must be upgraded"));
4097219089Spjd			err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
4098219089Spjd			break;
4099219089Spjd		case EINVAL:
4100219089Spjd			err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
4101219089Spjd			break;
4102219089Spjd		case ENOENT:
4103219089Spjd			err = zfs_error(hdl, EZFS_NOENT, errbuf);
4104219089Spjd			break;
4105219089Spjd		default:
4106219089Spjd			err = zfs_standard_error_fmt(hdl, errno, errbuf);
4107219089Spjd			break;
4108219089Spjd		}
4109219089Spjd	} else {
4110219089Spjd		/* success */
4111219089Spjd		int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0);
4112219089Spjd		if (rc) {
4113219089Spjd			(void) snprintf(errbuf, sizeof (errbuf), dgettext(
4114219089Spjd			    TEXT_DOMAIN, "cannot get permissions on '%s'"),
4115219089Spjd			    zc.zc_name);
4116219089Spjd			err = zfs_standard_error_fmt(hdl, rc, errbuf);
4117219089Spjd		}
4118219089Spjd	}
4119219089Spjd
4120219089Spjd	free(nvbuf);
4121219089Spjdout:
4122219089Spjd	return (err);
4123219089Spjd}
4124219089Spjd
4125219089Spjdint
4126219089Spjdzfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl)
4127219089Spjd{
4128219089Spjd	zfs_cmd_t zc = { 0 };
4129219089Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
4130219089Spjd	char *nvbuf;
4131219089Spjd	char errbuf[ZFS_MAXNAMELEN+32];
4132219089Spjd	size_t nvsz;
4133219089Spjd	int err;
4134219089Spjd
4135219089Spjd	assert(zhp->zfs_type == ZFS_TYPE_VOLUME ||
4136219089Spjd	    zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
4137219089Spjd
4138219089Spjd	err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE);
4139219089Spjd	assert(err == 0);
4140219089Spjd
4141219089Spjd	nvbuf = malloc(nvsz);
4142219089Spjd
4143219089Spjd	err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0);
4144219089Spjd	assert(err == 0);
4145219089Spjd
4146219089Spjd	zc.zc_nvlist_src_size = nvsz;
4147219089Spjd	zc.zc_nvlist_src = (uintptr_t)nvbuf;
4148219089Spjd	zc.zc_perm_action = un;
4149219089Spjd
4150219089Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
4151219089Spjd
4152219089Spjd	if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) {
4153219089Spjd		(void) snprintf(errbuf, sizeof (errbuf),
4154219089Spjd		    dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"),
4155219089Spjd		    zc.zc_name);
4156219089Spjd		switch (errno) {
4157219089Spjd		case ENOTSUP:
4158219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4159219089Spjd			    "pool must be upgraded"));
4160219089Spjd			err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
4161219089Spjd			break;
4162219089Spjd		case EINVAL:
4163219089Spjd			err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
4164219089Spjd			break;
4165219089Spjd		case ENOENT:
4166219089Spjd			err = zfs_error(hdl, EZFS_NOENT, errbuf);
4167219089Spjd			break;
4168219089Spjd		default:
4169219089Spjd			err = zfs_standard_error_fmt(hdl, errno, errbuf);
4170219089Spjd			break;
4171219089Spjd		}
4172219089Spjd	}
4173219089Spjd
4174219089Spjd	free(nvbuf);
4175219089Spjd
4176219089Spjd	return (err);
4177219089Spjd}
4178219089Spjd
4179219089Spjdint
4180219089Spjdzfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl)
4181219089Spjd{
4182219089Spjd	zfs_cmd_t zc = { 0 };
4183219089Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
4184219089Spjd	int nvsz = 2048;
4185219089Spjd	void *nvbuf;
4186219089Spjd	int err = 0;
4187219089Spjd	char errbuf[ZFS_MAXNAMELEN+32];
4188219089Spjd
4189219089Spjd	assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
4190219089Spjd
4191219089Spjdtryagain:
4192219089Spjd
4193219089Spjd	nvbuf = malloc(nvsz);
4194219089Spjd	if (nvbuf == NULL) {
4195219089Spjd		err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno)));
4196219089Spjd		goto out;
4197219089Spjd	}
4198219089Spjd
4199219089Spjd	zc.zc_nvlist_dst_size = nvsz;
4200219089Spjd	zc.zc_nvlist_dst = (uintptr_t)nvbuf;
4201219089Spjd
4202219089Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN);
4203219089Spjd
4204219089Spjd	if (zfs_ioctl(hdl, ZFS_IOC_GET_HOLDS, &zc) != 0) {
4205219089Spjd		(void) snprintf(errbuf, sizeof (errbuf),
4206219089Spjd		    dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"),
4207219089Spjd		    zc.zc_name);
4208219089Spjd		switch (errno) {
4209219089Spjd		case ENOMEM:
4210219089Spjd			free(nvbuf);
4211219089Spjd			nvsz = zc.zc_nvlist_dst_size;
4212219089Spjd			goto tryagain;
4213219089Spjd
4214219089Spjd		case ENOTSUP:
4215219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4216219089Spjd			    "pool must be upgraded"));
4217219089Spjd			err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
4218219089Spjd			break;
4219219089Spjd		case EINVAL:
4220219089Spjd			err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
4221219089Spjd			break;
4222219089Spjd		case ENOENT:
4223219089Spjd			err = zfs_error(hdl, EZFS_NOENT, errbuf);
4224219089Spjd			break;
4225219089Spjd		default:
4226219089Spjd			err = zfs_standard_error_fmt(hdl, errno, errbuf);
4227219089Spjd			break;
4228219089Spjd		}
4229219089Spjd	} else {
4230219089Spjd		/* success */
4231219089Spjd		int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0);
4232219089Spjd		if (rc) {
4233219089Spjd			(void) snprintf(errbuf, sizeof (errbuf),
4234219089Spjd			    dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"),
4235219089Spjd			    zc.zc_name);
4236219089Spjd			err = zfs_standard_error_fmt(hdl, rc, errbuf);
4237219089Spjd		}
4238219089Spjd	}
4239219089Spjd
4240219089Spjd	free(nvbuf);
4241219089Spjdout:
4242219089Spjd	return (err);
4243219089Spjd}
4244219089Spjd
4245219089Spjduint64_t
4246219089Spjdzvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props)
4247219089Spjd{
4248219089Spjd	uint64_t numdb;
4249219089Spjd	uint64_t nblocks, volblocksize;
4250219089Spjd	int ncopies;
4251219089Spjd	char *strval;
4252219089Spjd
4253219089Spjd	if (nvlist_lookup_string(props,
4254219089Spjd	    zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0)
4255219089Spjd		ncopies = atoi(strval);
4256219089Spjd	else
4257219089Spjd		ncopies = 1;
4258219089Spjd	if (nvlist_lookup_uint64(props,
4259219089Spjd	    zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
4260219089Spjd	    &volblocksize) != 0)
4261219089Spjd		volblocksize = ZVOL_DEFAULT_BLOCKSIZE;
4262219089Spjd	nblocks = volsize/volblocksize;
4263219089Spjd	/* start with metadnode L0-L6 */
4264219089Spjd	numdb = 7;
4265219089Spjd	/* calculate number of indirects */
4266219089Spjd	while (nblocks > 1) {
4267219089Spjd		nblocks += DNODES_PER_LEVEL - 1;
4268219089Spjd		nblocks /= DNODES_PER_LEVEL;
4269219089Spjd		numdb += nblocks;
4270219089Spjd	}
4271219089Spjd	numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1);
4272219089Spjd	volsize *= ncopies;
4273219089Spjd	/*
4274219089Spjd	 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't
4275219089Spjd	 * compressed, but in practice they compress down to about
4276219089Spjd	 * 1100 bytes
4277219089Spjd	 */
4278219089Spjd	numdb *= 1ULL << DN_MAX_INDBLKSHIFT;
4279219089Spjd	volsize += numdb;
4280219089Spjd	return (volsize);
4281219089Spjd}
4282219089Spjd
4283168404Spjd/*
4284168404Spjd * Attach/detach the given filesystem to/from the given jail.
4285168404Spjd */
4286168404Spjdint
4287168404Spjdzfs_jail(zfs_handle_t *zhp, int jailid, int attach)
4288168404Spjd{
4289168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
4290168404Spjd	zfs_cmd_t zc = { 0 };
4291168404Spjd	char errbuf[1024];
4292224525Smm	unsigned long cmd;
4293224525Smm	int ret;
4294168404Spjd
4295168404Spjd	if (attach) {
4296168404Spjd		(void) snprintf(errbuf, sizeof (errbuf),
4297168404Spjd		    dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name);
4298168404Spjd	} else {
4299168404Spjd		(void) snprintf(errbuf, sizeof (errbuf),
4300168404Spjd		    dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name);
4301168404Spjd	}
4302168404Spjd
4303168404Spjd	switch (zhp->zfs_type) {
4304168404Spjd	case ZFS_TYPE_VOLUME:
4305168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4306168404Spjd		    "volumes can not be jailed"));
4307168404Spjd		return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
4308168404Spjd	case ZFS_TYPE_SNAPSHOT:
4309168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4310168404Spjd		    "snapshots can not be jailed"));
4311168404Spjd		return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
4312168404Spjd	}
4313168404Spjd	assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
4314168404Spjd
4315168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
4316168404Spjd	zc.zc_objset_type = DMU_OST_ZFS;
4317168404Spjd	zc.zc_jailid = jailid;
4318168404Spjd
4319168404Spjd	cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL;
4320168404Spjd	if ((ret = ioctl(hdl->libzfs_fd, cmd, &zc)) != 0)
4321168404Spjd		zfs_standard_error(hdl, errno, errbuf);
4322168404Spjd
4323168404Spjd	return (ret);
4324168404Spjd}
4325