libzfs_dataset.c revision 346690
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.
24339103Smav * Copyright (c) 2018, Joyent, Inc. All rights reserved.
25325139Savg * Copyright (c) 2011, 2016 by Delphix. All rights reserved.
26252219Sdelphij * Copyright (c) 2012 DEY Storage Systems, Inc.  All rights reserved.
27307046Smav * Copyright (c) 2011-2012 Pawel Jakub Dawidek. All rights reserved.
28307046Smav * Copyright (c) 2013 Martin Matuska. All rights reserved.
29251646Sdelphij * Copyright (c) 2013 Steven Hartland. All rights reserved.
30296519Smav * Copyright (c) 2014 Integros [integros.com]
31307050Smav * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>
32329489Smav * Copyright 2017 Nexenta Systems, Inc.
33321577Smav * Copyright 2017 RackTop Systems.
34168404Spjd */
35168404Spjd
36168404Spjd#include <ctype.h>
37168404Spjd#include <errno.h>
38168404Spjd#include <libintl.h>
39168404Spjd#include <math.h>
40168404Spjd#include <stdio.h>
41168404Spjd#include <stdlib.h>
42168404Spjd#include <strings.h>
43168404Spjd#include <unistd.h>
44185029Spjd#include <stddef.h>
45168404Spjd#include <zone.h>
46168404Spjd#include <fcntl.h>
47168404Spjd#include <sys/mntent.h>
48168404Spjd#include <sys/mount.h>
49185029Spjd#include <priv.h>
50185029Spjd#include <pwd.h>
51185029Spjd#include <grp.h>
52185029Spjd#include <stddef.h>
53339118Smav#ifdef illumos
54209962Smm#include <idmap.h>
55339118Smav#endif
56168404Spjd
57219089Spjd#include <sys/dnode.h>
58168404Spjd#include <sys/spa.h>
59168404Spjd#include <sys/zap.h>
60209962Smm#include <sys/misc.h>
61168404Spjd#include <libzfs.h>
62168404Spjd
63168404Spjd#include "zfs_namecheck.h"
64168404Spjd#include "zfs_prop.h"
65168404Spjd#include "libzfs_impl.h"
66185029Spjd#include "zfs_deleg.h"
67168404Spjd
68209962Smmstatic int userquota_propname_decode(const char *propname, boolean_t zoned,
69209962Smm    zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp);
70168676Spjd
71168404Spjd/*
72168404Spjd * Given a single type (not a mask of types), return the type in a human
73168404Spjd * readable form.
74168404Spjd */
75168404Spjdconst char *
76168404Spjdzfs_type_to_name(zfs_type_t type)
77168404Spjd{
78168404Spjd	switch (type) {
79168404Spjd	case ZFS_TYPE_FILESYSTEM:
80168404Spjd		return (dgettext(TEXT_DOMAIN, "filesystem"));
81168404Spjd	case ZFS_TYPE_SNAPSHOT:
82168404Spjd		return (dgettext(TEXT_DOMAIN, "snapshot"));
83168404Spjd	case ZFS_TYPE_VOLUME:
84168404Spjd		return (dgettext(TEXT_DOMAIN, "volume"));
85307050Smav	case ZFS_TYPE_POOL:
86307050Smav		return (dgettext(TEXT_DOMAIN, "pool"));
87307050Smav	case ZFS_TYPE_BOOKMARK:
88307050Smav		return (dgettext(TEXT_DOMAIN, "bookmark"));
89307050Smav	default:
90307050Smav		assert(!"unhandled zfs_type_t");
91168404Spjd	}
92168404Spjd
93168404Spjd	return (NULL);
94168404Spjd}
95168404Spjd
96168404Spjd/*
97168404Spjd * Validate a ZFS path.  This is used even before trying to open the dataset, to
98209962Smm * provide a more meaningful error message.  We call zfs_error_aux() to
99209962Smm * explain exactly why the name was not valid.
100168404Spjd */
101219089Spjdint
102185029Spjdzfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
103185029Spjd    boolean_t modifying)
104168404Spjd{
105168404Spjd	namecheck_err_t why;
106168404Spjd	char what;
107168404Spjd
108321534Smav	if (entity_namecheck(path, &why, &what) != 0) {
109168404Spjd		if (hdl != NULL) {
110168404Spjd			switch (why) {
111168404Spjd			case NAME_ERR_TOOLONG:
112168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
113168404Spjd				    "name is too long"));
114168404Spjd				break;
115168404Spjd
116168404Spjd			case NAME_ERR_LEADING_SLASH:
117168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
118168404Spjd				    "leading slash in name"));
119168404Spjd				break;
120168404Spjd
121168404Spjd			case NAME_ERR_EMPTY_COMPONENT:
122168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
123168404Spjd				    "empty component in name"));
124168404Spjd				break;
125168404Spjd
126168404Spjd			case NAME_ERR_TRAILING_SLASH:
127168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
128168404Spjd				    "trailing slash in name"));
129168404Spjd				break;
130168404Spjd
131168404Spjd			case NAME_ERR_INVALCHAR:
132168404Spjd				zfs_error_aux(hdl,
133168404Spjd				    dgettext(TEXT_DOMAIN, "invalid character "
134168404Spjd				    "'%c' in name"), what);
135168404Spjd				break;
136168404Spjd
137321534Smav			case NAME_ERR_MULTIPLE_DELIMITERS:
138168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
139321534Smav				    "multiple '@' and/or '#' delimiters in "
140321534Smav				    "name"));
141168404Spjd				break;
142168404Spjd
143168404Spjd			case NAME_ERR_NOLETTER:
144168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
145168404Spjd				    "pool doesn't begin with a letter"));
146168404Spjd				break;
147168404Spjd
148168404Spjd			case NAME_ERR_RESERVED:
149168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
150168404Spjd				    "name is reserved"));
151168404Spjd				break;
152168404Spjd
153168404Spjd			case NAME_ERR_DISKLIKE:
154168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
155168404Spjd				    "reserved disk name"));
156168404Spjd				break;
157307050Smav
158307050Smav			default:
159307050Smav				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
160307050Smav				    "(%d) not defined"), why);
161307050Smav				break;
162168404Spjd			}
163168404Spjd		}
164168404Spjd
165168404Spjd		return (0);
166168404Spjd	}
167168404Spjd
168168404Spjd	if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) {
169168404Spjd		if (hdl != NULL)
170168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
171321534Smav			    "snapshot delimiter '@' is not expected here"));
172168404Spjd		return (0);
173168404Spjd	}
174168404Spjd
175168404Spjd	if (type == ZFS_TYPE_SNAPSHOT && strchr(path, '@') == NULL) {
176168404Spjd		if (hdl != NULL)
177168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
178168404Spjd			    "missing '@' delimiter in snapshot name"));
179168404Spjd		return (0);
180168404Spjd	}
181168404Spjd
182321534Smav	if (!(type & ZFS_TYPE_BOOKMARK) && strchr(path, '#') != NULL) {
183321534Smav		if (hdl != NULL)
184321534Smav			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
185321534Smav			    "bookmark delimiter '#' is not expected here"));
186321534Smav		return (0);
187321534Smav	}
188321534Smav
189321534Smav	if (type == ZFS_TYPE_BOOKMARK && strchr(path, '#') == NULL) {
190321534Smav		if (hdl != NULL)
191321534Smav			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
192321534Smav			    "missing '#' delimiter in bookmark name"));
193321534Smav		return (0);
194321534Smav	}
195321534Smav
196185029Spjd	if (modifying && strchr(path, '%') != NULL) {
197185029Spjd		if (hdl != NULL)
198185029Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
199185029Spjd			    "invalid character %c in name"), '%');
200185029Spjd		return (0);
201185029Spjd	}
202185029Spjd
203168404Spjd	return (-1);
204168404Spjd}
205168404Spjd
206168404Spjdint
207168404Spjdzfs_name_valid(const char *name, zfs_type_t type)
208168404Spjd{
209185029Spjd	if (type == ZFS_TYPE_POOL)
210185029Spjd		return (zpool_name_valid(NULL, B_FALSE, name));
211185029Spjd	return (zfs_validate_name(NULL, name, type, B_FALSE));
212168404Spjd}
213168404Spjd
214168404Spjd/*
215168404Spjd * This function takes the raw DSL properties, and filters out the user-defined
216168404Spjd * properties into a separate nvlist.
217168404Spjd */
218185029Spjdstatic nvlist_t *
219185029Spjdprocess_user_props(zfs_handle_t *zhp, nvlist_t *props)
220168404Spjd{
221168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
222168404Spjd	nvpair_t *elem;
223168404Spjd	nvlist_t *propval;
224185029Spjd	nvlist_t *nvl;
225168404Spjd
226185029Spjd	if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) {
227185029Spjd		(void) no_memory(hdl);
228185029Spjd		return (NULL);
229185029Spjd	}
230168404Spjd
231168404Spjd	elem = NULL;
232185029Spjd	while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
233168404Spjd		if (!zfs_prop_user(nvpair_name(elem)))
234168404Spjd			continue;
235168404Spjd
236168404Spjd		verify(nvpair_value_nvlist(elem, &propval) == 0);
237185029Spjd		if (nvlist_add_nvlist(nvl, nvpair_name(elem), propval) != 0) {
238185029Spjd			nvlist_free(nvl);
239185029Spjd			(void) no_memory(hdl);
240185029Spjd			return (NULL);
241185029Spjd		}
242168404Spjd	}
243168404Spjd
244185029Spjd	return (nvl);
245168404Spjd}
246168404Spjd
247185029Spjdstatic zpool_handle_t *
248185029Spjdzpool_add_handle(zfs_handle_t *zhp, const char *pool_name)
249185029Spjd{
250185029Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
251185029Spjd	zpool_handle_t *zph;
252185029Spjd
253185029Spjd	if ((zph = zpool_open_canfail(hdl, pool_name)) != NULL) {
254185029Spjd		if (hdl->libzfs_pool_handles != NULL)
255185029Spjd			zph->zpool_next = hdl->libzfs_pool_handles;
256185029Spjd		hdl->libzfs_pool_handles = zph;
257185029Spjd	}
258185029Spjd	return (zph);
259185029Spjd}
260185029Spjd
261185029Spjdstatic zpool_handle_t *
262185029Spjdzpool_find_handle(zfs_handle_t *zhp, const char *pool_name, int len)
263185029Spjd{
264185029Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
265185029Spjd	zpool_handle_t *zph = hdl->libzfs_pool_handles;
266185029Spjd
267185029Spjd	while ((zph != NULL) &&
268185029Spjd	    (strncmp(pool_name, zpool_get_name(zph), len) != 0))
269185029Spjd		zph = zph->zpool_next;
270185029Spjd	return (zph);
271185029Spjd}
272185029Spjd
273168404Spjd/*
274185029Spjd * Returns a handle to the pool that contains the provided dataset.
275185029Spjd * If a handle to that pool already exists then that handle is returned.
276185029Spjd * Otherwise, a new handle is created and added to the list of handles.
277185029Spjd */
278185029Spjdstatic zpool_handle_t *
279185029Spjdzpool_handle(zfs_handle_t *zhp)
280185029Spjd{
281185029Spjd	char *pool_name;
282185029Spjd	int len;
283185029Spjd	zpool_handle_t *zph;
284185029Spjd
285260183Sdelphij	len = strcspn(zhp->zfs_name, "/@#") + 1;
286185029Spjd	pool_name = zfs_alloc(zhp->zfs_hdl, len);
287185029Spjd	(void) strlcpy(pool_name, zhp->zfs_name, len);
288185029Spjd
289185029Spjd	zph = zpool_find_handle(zhp, pool_name, len);
290185029Spjd	if (zph == NULL)
291185029Spjd		zph = zpool_add_handle(zhp, pool_name);
292185029Spjd
293185029Spjd	free(pool_name);
294185029Spjd	return (zph);
295185029Spjd}
296185029Spjd
297185029Spjdvoid
298185029Spjdzpool_free_handles(libzfs_handle_t *hdl)
299185029Spjd{
300185029Spjd	zpool_handle_t *next, *zph = hdl->libzfs_pool_handles;
301185029Spjd
302185029Spjd	while (zph != NULL) {
303185029Spjd		next = zph->zpool_next;
304185029Spjd		zpool_close(zph);
305185029Spjd		zph = next;
306185029Spjd	}
307185029Spjd	hdl->libzfs_pool_handles = NULL;
308185029Spjd}
309185029Spjd
310185029Spjd/*
311168404Spjd * Utility function to gather stats (objset and zpl) for the given object.
312168404Spjd */
313219089Spjdstatic int
314209962Smmget_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc)
315168404Spjd{
316168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
317168404Spjd
318209962Smm	(void) strlcpy(zc->zc_name, zhp->zfs_name, sizeof (zc->zc_name));
319168404Spjd
320209962Smm	while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, zc) != 0) {
321168404Spjd		if (errno == ENOMEM) {
322209962Smm			if (zcmd_expand_dst_nvlist(hdl, zc) != 0) {
323168404Spjd				return (-1);
324168404Spjd			}
325168404Spjd		} else {
326168404Spjd			return (-1);
327168404Spjd		}
328168404Spjd	}
329209962Smm	return (0);
330209962Smm}
331168404Spjd
332219089Spjd/*
333219089Spjd * Utility function to get the received properties of the given object.
334219089Spjd */
335209962Smmstatic int
336219089Spjdget_recvd_props_ioctl(zfs_handle_t *zhp)
337219089Spjd{
338219089Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
339219089Spjd	nvlist_t *recvdprops;
340219089Spjd	zfs_cmd_t zc = { 0 };
341219089Spjd	int err;
342219089Spjd
343219089Spjd	if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0)
344219089Spjd		return (-1);
345219089Spjd
346219089Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
347219089Spjd
348219089Spjd	while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) {
349219089Spjd		if (errno == ENOMEM) {
350219089Spjd			if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
351219089Spjd				return (-1);
352219089Spjd			}
353219089Spjd		} else {
354219089Spjd			zcmd_free_nvlists(&zc);
355219089Spjd			return (-1);
356219089Spjd		}
357219089Spjd	}
358219089Spjd
359219089Spjd	err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops);
360219089Spjd	zcmd_free_nvlists(&zc);
361219089Spjd	if (err != 0)
362219089Spjd		return (-1);
363219089Spjd
364219089Spjd	nvlist_free(zhp->zfs_recvd_props);
365219089Spjd	zhp->zfs_recvd_props = recvdprops;
366219089Spjd
367219089Spjd	return (0);
368219089Spjd}
369219089Spjd
370219089Spjdstatic int
371209962Smmput_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc)
372209962Smm{
373209962Smm	nvlist_t *allprops, *userprops;
374168404Spjd
375209962Smm	zhp->zfs_dmustats = zc->zc_objset_stats; /* structure assignment */
376209962Smm
377209962Smm	if (zcmd_read_dst_nvlist(zhp->zfs_hdl, zc, &allprops) != 0) {
378168404Spjd		return (-1);
379168404Spjd	}
380168404Spjd
381209962Smm	/*
382209962Smm	 * XXX Why do we store the user props separately, in addition to
383209962Smm	 * storing them in zfs_props?
384209962Smm	 */
385185029Spjd	if ((userprops = process_user_props(zhp, allprops)) == NULL) {
386185029Spjd		nvlist_free(allprops);
387168404Spjd		return (-1);
388185029Spjd	}
389168404Spjd
390185029Spjd	nvlist_free(zhp->zfs_props);
391185029Spjd	nvlist_free(zhp->zfs_user_props);
392185029Spjd
393185029Spjd	zhp->zfs_props = allprops;
394185029Spjd	zhp->zfs_user_props = userprops;
395185029Spjd
396168404Spjd	return (0);
397168404Spjd}
398168404Spjd
399209962Smmstatic int
400209962Smmget_stats(zfs_handle_t *zhp)
401209962Smm{
402209962Smm	int rc = 0;
403209962Smm	zfs_cmd_t zc = { 0 };
404209962Smm
405209962Smm	if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0)
406209962Smm		return (-1);
407209962Smm	if (get_stats_ioctl(zhp, &zc) != 0)
408209962Smm		rc = -1;
409209962Smm	else if (put_stats_zhdl(zhp, &zc) != 0)
410209962Smm		rc = -1;
411209962Smm	zcmd_free_nvlists(&zc);
412209962Smm	return (rc);
413209962Smm}
414209962Smm
415168404Spjd/*
416168404Spjd * Refresh the properties currently stored in the handle.
417168404Spjd */
418168404Spjdvoid
419168404Spjdzfs_refresh_properties(zfs_handle_t *zhp)
420168404Spjd{
421168404Spjd	(void) get_stats(zhp);
422168404Spjd}
423168404Spjd
424168404Spjd/*
425168404Spjd * Makes a handle from the given dataset name.  Used by zfs_open() and
426168404Spjd * zfs_iter_* to create child handles on the fly.
427168404Spjd */
428209962Smmstatic int
429209962Smmmake_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc)
430168404Spjd{
431219089Spjd	if (put_stats_zhdl(zhp, zc) != 0)
432209962Smm		return (-1);
433168404Spjd
434168404Spjd	/*
435168404Spjd	 * We've managed to open the dataset and gather statistics.  Determine
436168404Spjd	 * the high-level type.
437168404Spjd	 */
438168404Spjd	if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL)
439168404Spjd		zhp->zfs_head_type = ZFS_TYPE_VOLUME;
440168404Spjd	else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS)
441168404Spjd		zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM;
442168404Spjd	else
443168404Spjd		abort();
444168404Spjd
445168404Spjd	if (zhp->zfs_dmustats.dds_is_snapshot)
446168404Spjd		zhp->zfs_type = ZFS_TYPE_SNAPSHOT;
447168404Spjd	else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL)
448168404Spjd		zhp->zfs_type = ZFS_TYPE_VOLUME;
449168404Spjd	else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS)
450168404Spjd		zhp->zfs_type = ZFS_TYPE_FILESYSTEM;
451168404Spjd	else
452168404Spjd		abort();	/* we should never see any other types */
453168404Spjd
454219089Spjd	if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL)
455219089Spjd		return (-1);
456219089Spjd
457209962Smm	return (0);
458209962Smm}
459209962Smm
460209962Smmzfs_handle_t *
461209962Smmmake_dataset_handle(libzfs_handle_t *hdl, const char *path)
462209962Smm{
463209962Smm	zfs_cmd_t zc = { 0 };
464209962Smm
465209962Smm	zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
466209962Smm
467209962Smm	if (zhp == NULL)
468209962Smm		return (NULL);
469209962Smm
470209962Smm	zhp->zfs_hdl = hdl;
471209962Smm	(void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name));
472209962Smm	if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) {
473209962Smm		free(zhp);
474209962Smm		return (NULL);
475209962Smm	}
476209962Smm	if (get_stats_ioctl(zhp, &zc) == -1) {
477209962Smm		zcmd_free_nvlists(&zc);
478209962Smm		free(zhp);
479209962Smm		return (NULL);
480209962Smm	}
481209962Smm	if (make_dataset_handle_common(zhp, &zc) == -1) {
482209962Smm		free(zhp);
483209962Smm		zhp = NULL;
484209962Smm	}
485209962Smm	zcmd_free_nvlists(&zc);
486168404Spjd	return (zhp);
487168404Spjd}
488168404Spjd
489228103Smmzfs_handle_t *
490209962Smmmake_dataset_handle_zc(libzfs_handle_t *hdl, zfs_cmd_t *zc)
491209962Smm{
492209962Smm	zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
493209962Smm
494209962Smm	if (zhp == NULL)
495209962Smm		return (NULL);
496209962Smm
497209962Smm	zhp->zfs_hdl = hdl;
498209962Smm	(void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name));
499209962Smm	if (make_dataset_handle_common(zhp, zc) == -1) {
500209962Smm		free(zhp);
501209962Smm		return (NULL);
502209962Smm	}
503209962Smm	return (zhp);
504209962Smm}
505209962Smm
506228103Smmzfs_handle_t *
507230438Spjdmake_dataset_simple_handle_zc(zfs_handle_t *pzhp, zfs_cmd_t *zc)
508230438Spjd{
509230438Spjd	zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
510230438Spjd
511230438Spjd	if (zhp == NULL)
512230438Spjd		return (NULL);
513230438Spjd
514230438Spjd	zhp->zfs_hdl = pzhp->zfs_hdl;
515230438Spjd	(void) strlcpy(zhp->zfs_name, zc->zc_name, sizeof (zhp->zfs_name));
516230438Spjd	zhp->zfs_head_type = pzhp->zfs_type;
517230438Spjd	zhp->zfs_type = ZFS_TYPE_SNAPSHOT;
518230438Spjd	zhp->zpool_hdl = zpool_handle(zhp);
519230438Spjd	return (zhp);
520230438Spjd}
521230438Spjd
522230438Spjdzfs_handle_t *
523228103Smmzfs_handle_dup(zfs_handle_t *zhp_orig)
524228103Smm{
525228103Smm	zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
526228103Smm
527228103Smm	if (zhp == NULL)
528228103Smm		return (NULL);
529228103Smm
530228103Smm	zhp->zfs_hdl = zhp_orig->zfs_hdl;
531228103Smm	zhp->zpool_hdl = zhp_orig->zpool_hdl;
532228103Smm	(void) strlcpy(zhp->zfs_name, zhp_orig->zfs_name,
533228103Smm	    sizeof (zhp->zfs_name));
534228103Smm	zhp->zfs_type = zhp_orig->zfs_type;
535228103Smm	zhp->zfs_head_type = zhp_orig->zfs_head_type;
536228103Smm	zhp->zfs_dmustats = zhp_orig->zfs_dmustats;
537228103Smm	if (zhp_orig->zfs_props != NULL) {
538228103Smm		if (nvlist_dup(zhp_orig->zfs_props, &zhp->zfs_props, 0) != 0) {
539228103Smm			(void) no_memory(zhp->zfs_hdl);
540228103Smm			zfs_close(zhp);
541228103Smm			return (NULL);
542228103Smm		}
543228103Smm	}
544228103Smm	if (zhp_orig->zfs_user_props != NULL) {
545228103Smm		if (nvlist_dup(zhp_orig->zfs_user_props,
546228103Smm		    &zhp->zfs_user_props, 0) != 0) {
547228103Smm			(void) no_memory(zhp->zfs_hdl);
548228103Smm			zfs_close(zhp);
549228103Smm			return (NULL);
550228103Smm		}
551228103Smm	}
552228103Smm	if (zhp_orig->zfs_recvd_props != NULL) {
553228103Smm		if (nvlist_dup(zhp_orig->zfs_recvd_props,
554228103Smm		    &zhp->zfs_recvd_props, 0)) {
555228103Smm			(void) no_memory(zhp->zfs_hdl);
556228103Smm			zfs_close(zhp);
557228103Smm			return (NULL);
558228103Smm		}
559228103Smm	}
560228103Smm	zhp->zfs_mntcheck = zhp_orig->zfs_mntcheck;
561228103Smm	if (zhp_orig->zfs_mntopts != NULL) {
562228103Smm		zhp->zfs_mntopts = zfs_strdup(zhp_orig->zfs_hdl,
563228103Smm		    zhp_orig->zfs_mntopts);
564228103Smm	}
565228103Smm	zhp->zfs_props_table = zhp_orig->zfs_props_table;
566228103Smm	return (zhp);
567228103Smm}
568228103Smm
569260183Sdelphijboolean_t
570260183Sdelphijzfs_bookmark_exists(const char *path)
571260183Sdelphij{
572260183Sdelphij	nvlist_t *bmarks;
573260183Sdelphij	nvlist_t *props;
574307108Smav	char fsname[ZFS_MAX_DATASET_NAME_LEN];
575260183Sdelphij	char *bmark_name;
576260183Sdelphij	char *pound;
577260183Sdelphij	int err;
578260183Sdelphij	boolean_t rv;
579260183Sdelphij
580260183Sdelphij
581260183Sdelphij	(void) strlcpy(fsname, path, sizeof (fsname));
582260183Sdelphij	pound = strchr(fsname, '#');
583260183Sdelphij	if (pound == NULL)
584260183Sdelphij		return (B_FALSE);
585260183Sdelphij
586260183Sdelphij	*pound = '\0';
587260183Sdelphij	bmark_name = pound + 1;
588260183Sdelphij	props = fnvlist_alloc();
589260183Sdelphij	err = lzc_get_bookmarks(fsname, props, &bmarks);
590260183Sdelphij	nvlist_free(props);
591260183Sdelphij	if (err != 0) {
592260183Sdelphij		nvlist_free(bmarks);
593260183Sdelphij		return (B_FALSE);
594260183Sdelphij	}
595260183Sdelphij
596260183Sdelphij	rv = nvlist_exists(bmarks, bmark_name);
597260183Sdelphij	nvlist_free(bmarks);
598260183Sdelphij	return (rv);
599260183Sdelphij}
600260183Sdelphij
601260183Sdelphijzfs_handle_t *
602260183Sdelphijmake_bookmark_handle(zfs_handle_t *parent, const char *path,
603260183Sdelphij    nvlist_t *bmark_props)
604260183Sdelphij{
605260183Sdelphij	zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1);
606260183Sdelphij
607260183Sdelphij	if (zhp == NULL)
608260183Sdelphij		return (NULL);
609260183Sdelphij
610260183Sdelphij	/* Fill in the name. */
611260183Sdelphij	zhp->zfs_hdl = parent->zfs_hdl;
612260183Sdelphij	(void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name));
613260183Sdelphij
614260183Sdelphij	/* Set the property lists. */
615260183Sdelphij	if (nvlist_dup(bmark_props, &zhp->zfs_props, 0) != 0) {
616260183Sdelphij		free(zhp);
617260183Sdelphij		return (NULL);
618260183Sdelphij	}
619260183Sdelphij
620260183Sdelphij	/* Set the types. */
621260183Sdelphij	zhp->zfs_head_type = parent->zfs_head_type;
622260183Sdelphij	zhp->zfs_type = ZFS_TYPE_BOOKMARK;
623260183Sdelphij
624260183Sdelphij	if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) {
625260183Sdelphij		nvlist_free(zhp->zfs_props);
626260183Sdelphij		free(zhp);
627260183Sdelphij		return (NULL);
628260183Sdelphij	}
629260183Sdelphij
630260183Sdelphij	return (zhp);
631260183Sdelphij}
632260183Sdelphij
633321534Smavstruct zfs_open_bookmarks_cb_data {
634321534Smav	const char *path;
635321534Smav	zfs_handle_t *zhp;
636321534Smav};
637321534Smav
638321534Smavstatic int
639321534Smavzfs_open_bookmarks_cb(zfs_handle_t *zhp, void *data)
640321534Smav{
641321534Smav	struct zfs_open_bookmarks_cb_data *dp = data;
642321534Smav
643321534Smav	/*
644321534Smav	 * Is it the one we are looking for?
645321534Smav	 */
646321534Smav	if (strcmp(dp->path, zfs_get_name(zhp)) == 0) {
647321534Smav		/*
648321534Smav		 * We found it.  Save it and let the caller know we are done.
649321534Smav		 */
650321534Smav		dp->zhp = zhp;
651321534Smav		return (EEXIST);
652321534Smav	}
653321534Smav
654321534Smav	/*
655321534Smav	 * Not found.  Close the handle and ask for another one.
656321534Smav	 */
657321534Smav	zfs_close(zhp);
658321534Smav	return (0);
659321534Smav}
660321534Smav
661168404Spjd/*
662321534Smav * Opens the given snapshot, bookmark, filesystem, or volume.   The 'types'
663168404Spjd * argument is a mask of acceptable types.  The function will print an
664168404Spjd * appropriate error message and return NULL if it can't be opened.
665168404Spjd */
666168404Spjdzfs_handle_t *
667168404Spjdzfs_open(libzfs_handle_t *hdl, const char *path, int types)
668168404Spjd{
669168404Spjd	zfs_handle_t *zhp;
670168404Spjd	char errbuf[1024];
671321534Smav	char *bookp;
672168404Spjd
673168404Spjd	(void) snprintf(errbuf, sizeof (errbuf),
674168404Spjd	    dgettext(TEXT_DOMAIN, "cannot open '%s'"), path);
675168404Spjd
676168404Spjd	/*
677168404Spjd	 * Validate the name before we even try to open it.
678168404Spjd	 */
679321534Smav	if (!zfs_validate_name(hdl, path, types, B_FALSE)) {
680168404Spjd		(void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
681168404Spjd		return (NULL);
682168404Spjd	}
683168404Spjd
684168404Spjd	/*
685321534Smav	 * Bookmarks needs to be handled separately.
686168404Spjd	 */
687321534Smav	bookp = strchr(path, '#');
688321534Smav	if (bookp == NULL) {
689321534Smav		/*
690321534Smav		 * Try to get stats for the dataset, which will tell us if it
691321534Smav		 * exists.
692321534Smav		 */
693321534Smav		errno = 0;
694321534Smav		if ((zhp = make_dataset_handle(hdl, path)) == NULL) {
695321534Smav			(void) zfs_standard_error(hdl, errno, errbuf);
696321534Smav			return (NULL);
697321534Smav		}
698321534Smav	} else {
699321534Smav		char dsname[ZFS_MAX_DATASET_NAME_LEN];
700321534Smav		zfs_handle_t *pzhp;
701321534Smav		struct zfs_open_bookmarks_cb_data cb_data = {path, NULL};
702321534Smav
703321534Smav		/*
704321534Smav		 * We need to cut out '#' and everything after '#'
705321534Smav		 * to get the parent dataset name only.
706321534Smav		 */
707321534Smav		assert(bookp - path < sizeof (dsname));
708321534Smav		(void) strncpy(dsname, path, bookp - path);
709321534Smav		dsname[bookp - path] = '\0';
710321534Smav
711321534Smav		/*
712321534Smav		 * Create handle for the parent dataset.
713321534Smav		 */
714321534Smav		errno = 0;
715321534Smav		if ((pzhp = make_dataset_handle(hdl, dsname)) == NULL) {
716321534Smav			(void) zfs_standard_error(hdl, errno, errbuf);
717321534Smav			return (NULL);
718321534Smav		}
719321534Smav
720321534Smav		/*
721321534Smav		 * Iterate bookmarks to find the right one.
722321534Smav		 */
723321534Smav		errno = 0;
724321534Smav		if ((zfs_iter_bookmarks(pzhp, zfs_open_bookmarks_cb,
725321534Smav		    &cb_data) == 0) && (cb_data.zhp == NULL)) {
726321534Smav			(void) zfs_error(hdl, EZFS_NOENT, errbuf);
727321534Smav			zfs_close(pzhp);
728321534Smav			return (NULL);
729321534Smav		}
730321534Smav		if (cb_data.zhp == NULL) {
731321534Smav			(void) zfs_standard_error(hdl, errno, errbuf);
732321534Smav			zfs_close(pzhp);
733321534Smav			return (NULL);
734321534Smav		}
735321534Smav		zhp = cb_data.zhp;
736321534Smav
737321534Smav		/*
738321534Smav		 * Cleanup.
739321534Smav		 */
740321534Smav		zfs_close(pzhp);
741168404Spjd	}
742168404Spjd
743240870Spjd	if (zhp == NULL) {
744240870Spjd		char *at = strchr(path, '@');
745240870Spjd
746240870Spjd		if (at != NULL)
747240870Spjd			*at = '\0';
748240870Spjd		errno = 0;
749240870Spjd		if ((zhp = make_dataset_handle(hdl, path)) == NULL) {
750240870Spjd			(void) zfs_standard_error(hdl, errno, errbuf);
751240870Spjd			return (NULL);
752240870Spjd		}
753240870Spjd		if (at != NULL)
754240870Spjd			*at = '@';
755240870Spjd		(void) strlcpy(zhp->zfs_name, path, sizeof (zhp->zfs_name));
756240870Spjd		zhp->zfs_type = ZFS_TYPE_SNAPSHOT;
757240870Spjd	}
758240870Spjd
759168404Spjd	if (!(types & zhp->zfs_type)) {
760168404Spjd		(void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
761168404Spjd		zfs_close(zhp);
762168404Spjd		return (NULL);
763168404Spjd	}
764168404Spjd
765168404Spjd	return (zhp);
766168404Spjd}
767168404Spjd
768168404Spjd/*
769168404Spjd * Release a ZFS handle.  Nothing to do but free the associated memory.
770168404Spjd */
771168404Spjdvoid
772168404Spjdzfs_close(zfs_handle_t *zhp)
773168404Spjd{
774168404Spjd	if (zhp->zfs_mntopts)
775168404Spjd		free(zhp->zfs_mntopts);
776168404Spjd	nvlist_free(zhp->zfs_props);
777168404Spjd	nvlist_free(zhp->zfs_user_props);
778219089Spjd	nvlist_free(zhp->zfs_recvd_props);
779168404Spjd	free(zhp);
780168404Spjd}
781168404Spjd
782209962Smmtypedef struct mnttab_node {
783209962Smm	struct mnttab mtn_mt;
784209962Smm	avl_node_t mtn_node;
785209962Smm} mnttab_node_t;
786209962Smm
787209962Smmstatic int
788209962Smmlibzfs_mnttab_cache_compare(const void *arg1, const void *arg2)
789209962Smm{
790339158Smav	const mnttab_node_t *mtn1 = (const mnttab_node_t *)arg1;
791339158Smav	const mnttab_node_t *mtn2 = (const mnttab_node_t *)arg2;
792209962Smm	int rv;
793209962Smm
794209962Smm	rv = strcmp(mtn1->mtn_mt.mnt_special, mtn2->mtn_mt.mnt_special);
795209962Smm
796339158Smav	return (AVL_ISIGN(rv));
797209962Smm}
798209962Smm
799209962Smmvoid
800209962Smmlibzfs_mnttab_init(libzfs_handle_t *hdl)
801209962Smm{
802346690Smav	pthread_mutex_init(&hdl->libzfs_mnttab_cache_lock, NULL);
803209962Smm	assert(avl_numnodes(&hdl->libzfs_mnttab_cache) == 0);
804209962Smm	avl_create(&hdl->libzfs_mnttab_cache, libzfs_mnttab_cache_compare,
805209962Smm	    sizeof (mnttab_node_t), offsetof(mnttab_node_t, mtn_node));
806209962Smm}
807209962Smm
808209962Smmvoid
809209962Smmlibzfs_mnttab_update(libzfs_handle_t *hdl)
810209962Smm{
811209962Smm	struct mnttab entry;
812209962Smm
813209962Smm	rewind(hdl->libzfs_mnttab);
814209962Smm	while (getmntent(hdl->libzfs_mnttab, &entry) == 0) {
815209962Smm		mnttab_node_t *mtn;
816209962Smm
817209962Smm		if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
818209962Smm			continue;
819209962Smm		mtn = zfs_alloc(hdl, sizeof (mnttab_node_t));
820209962Smm		mtn->mtn_mt.mnt_special = zfs_strdup(hdl, entry.mnt_special);
821209962Smm		mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, entry.mnt_mountp);
822209962Smm		mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, entry.mnt_fstype);
823209962Smm		mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, entry.mnt_mntopts);
824209962Smm		avl_add(&hdl->libzfs_mnttab_cache, mtn);
825209962Smm	}
826209962Smm}
827209962Smm
828209962Smmvoid
829209962Smmlibzfs_mnttab_fini(libzfs_handle_t *hdl)
830209962Smm{
831209962Smm	void *cookie = NULL;
832209962Smm	mnttab_node_t *mtn;
833209962Smm
834307050Smav	while ((mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie))
835307050Smav	    != NULL) {
836209962Smm		free(mtn->mtn_mt.mnt_special);
837209962Smm		free(mtn->mtn_mt.mnt_mountp);
838209962Smm		free(mtn->mtn_mt.mnt_fstype);
839209962Smm		free(mtn->mtn_mt.mnt_mntopts);
840209962Smm		free(mtn);
841209962Smm	}
842209962Smm	avl_destroy(&hdl->libzfs_mnttab_cache);
843346690Smav	(void) pthread_mutex_destroy(&hdl->libzfs_mnttab_cache_lock);
844209962Smm}
845209962Smm
846209962Smmvoid
847209962Smmlibzfs_mnttab_cache(libzfs_handle_t *hdl, boolean_t enable)
848209962Smm{
849209962Smm	hdl->libzfs_mnttab_enable = enable;
850209962Smm}
851209962Smm
852185029Spjdint
853209962Smmlibzfs_mnttab_find(libzfs_handle_t *hdl, const char *fsname,
854209962Smm    struct mnttab *entry)
855209962Smm{
856209962Smm	mnttab_node_t find;
857209962Smm	mnttab_node_t *mtn;
858346690Smav	int ret = ENOENT;
859209962Smm
860209962Smm	if (!hdl->libzfs_mnttab_enable) {
861209962Smm		struct mnttab srch = { 0 };
862209962Smm
863209962Smm		if (avl_numnodes(&hdl->libzfs_mnttab_cache))
864209962Smm			libzfs_mnttab_fini(hdl);
865209962Smm		rewind(hdl->libzfs_mnttab);
866209962Smm		srch.mnt_special = (char *)fsname;
867209962Smm		srch.mnt_fstype = MNTTYPE_ZFS;
868209962Smm		if (getmntany(hdl->libzfs_mnttab, entry, &srch) == 0)
869209962Smm			return (0);
870209962Smm		else
871209962Smm			return (ENOENT);
872209962Smm	}
873209962Smm
874346690Smav	pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock);
875209962Smm	if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0)
876209962Smm		libzfs_mnttab_update(hdl);
877209962Smm
878209962Smm	find.mtn_mt.mnt_special = (char *)fsname;
879209962Smm	mtn = avl_find(&hdl->libzfs_mnttab_cache, &find, NULL);
880209962Smm	if (mtn) {
881209962Smm		*entry = mtn->mtn_mt;
882346690Smav		ret = 0;
883209962Smm	}
884346690Smav	pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock);
885346690Smav	return (ret);
886209962Smm}
887209962Smm
888209962Smmvoid
889209962Smmlibzfs_mnttab_add(libzfs_handle_t *hdl, const char *special,
890209962Smm    const char *mountp, const char *mntopts)
891209962Smm{
892209962Smm	mnttab_node_t *mtn;
893209962Smm
894346690Smav	pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock);
895346690Smav	if (avl_numnodes(&hdl->libzfs_mnttab_cache) == 0) {
896346690Smav		mtn = zfs_alloc(hdl, sizeof (mnttab_node_t));
897346690Smav		mtn->mtn_mt.mnt_special = zfs_strdup(hdl, special);
898346690Smav		mtn->mtn_mt.mnt_mountp = zfs_strdup(hdl, mountp);
899346690Smav		mtn->mtn_mt.mnt_fstype = zfs_strdup(hdl, MNTTYPE_ZFS);
900346690Smav		mtn->mtn_mt.mnt_mntopts = zfs_strdup(hdl, mntopts);
901346690Smav		avl_add(&hdl->libzfs_mnttab_cache, mtn);
902346690Smav	}
903346690Smav	pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock);
904346690Smav}
905209962Smm
906209962Smmvoid
907209962Smmlibzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname)
908209962Smm{
909209962Smm	mnttab_node_t find;
910209962Smm	mnttab_node_t *ret;
911209962Smm
912346690Smav	pthread_mutex_lock(&hdl->libzfs_mnttab_cache_lock);
913209962Smm	find.mtn_mt.mnt_special = (char *)fsname;
914307050Smav	if ((ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL))
915307050Smav	    != NULL) {
916209962Smm		avl_remove(&hdl->libzfs_mnttab_cache, ret);
917209962Smm		free(ret->mtn_mt.mnt_special);
918209962Smm		free(ret->mtn_mt.mnt_mountp);
919209962Smm		free(ret->mtn_mt.mnt_fstype);
920209962Smm		free(ret->mtn_mt.mnt_mntopts);
921209962Smm		free(ret);
922209962Smm	}
923346690Smav	pthread_mutex_unlock(&hdl->libzfs_mnttab_cache_lock);
924209962Smm}
925209962Smm
926209962Smmint
927185029Spjdzfs_spa_version(zfs_handle_t *zhp, int *spa_version)
928168404Spjd{
929185029Spjd	zpool_handle_t *zpool_handle = zhp->zpool_hdl;
930168404Spjd
931185029Spjd	if (zpool_handle == NULL)
932168404Spjd		return (-1);
933168404Spjd
934185029Spjd	*spa_version = zpool_get_prop_int(zpool_handle,
935185029Spjd	    ZPOOL_PROP_VERSION, NULL);
936168404Spjd	return (0);
937168404Spjd}
938168404Spjd
939168404Spjd/*
940185029Spjd * The choice of reservation property depends on the SPA version.
941168404Spjd */
942168404Spjdstatic int
943185029Spjdzfs_which_resv_prop(zfs_handle_t *zhp, zfs_prop_t *resv_prop)
944168404Spjd{
945185029Spjd	int spa_version;
946168404Spjd
947185029Spjd	if (zfs_spa_version(zhp, &spa_version) < 0)
948168404Spjd		return (-1);
949168404Spjd
950185029Spjd	if (spa_version >= SPA_VERSION_REFRESERVATION)
951185029Spjd		*resv_prop = ZFS_PROP_REFRESERVATION;
952185029Spjd	else
953185029Spjd		*resv_prop = ZFS_PROP_RESERVATION;
954168404Spjd
955168404Spjd	return (0);
956168404Spjd}
957168404Spjd
958168404Spjd/*
959168404Spjd * Given an nvlist of properties to set, validates that they are correct, and
960168404Spjd * parses any numeric properties (index, boolean, etc) if they are specified as
961168404Spjd * strings.
962168404Spjd */
963168404Spjdnvlist_t *
964185029Spjdzfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
965289500Smav    uint64_t zoned, zfs_handle_t *zhp, zpool_handle_t *zpool_hdl,
966289500Smav    const char *errbuf)
967168404Spjd{
968168404Spjd	nvpair_t *elem;
969168404Spjd	uint64_t intval;
970168404Spjd	char *strval;
971185029Spjd	zfs_prop_t prop;
972168404Spjd	nvlist_t *ret;
973185029Spjd	int chosen_normal = -1;
974185029Spjd	int chosen_utf = -1;
975168404Spjd
976168404Spjd	if (nvlist_alloc(&ret, NV_UNIQUE_NAME, 0) != 0) {
977168404Spjd		(void) no_memory(hdl);
978168404Spjd		return (NULL);
979168404Spjd	}
980168404Spjd
981209962Smm	/*
982209962Smm	 * Make sure this property is valid and applies to this type.
983209962Smm	 */
984209962Smm
985168404Spjd	elem = NULL;
986168404Spjd	while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
987185029Spjd		const char *propname = nvpair_name(elem);
988168404Spjd
989209962Smm		prop = zfs_name_to_prop(propname);
990209962Smm		if (prop == ZPROP_INVAL && zfs_prop_user(propname)) {
991185029Spjd			/*
992209962Smm			 * This is a user property: make sure it's a
993185029Spjd			 * string, and that it's less than ZAP_MAXNAMELEN.
994185029Spjd			 */
995185029Spjd			if (nvpair_type(elem) != DATA_TYPE_STRING) {
996185029Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
997185029Spjd				    "'%s' must be a string"), propname);
998185029Spjd				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
999185029Spjd				goto error;
1000168404Spjd			}
1001168404Spjd
1002185029Spjd			if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) {
1003185029Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1004185029Spjd				    "property name '%s' is too long"),
1005185029Spjd				    propname);
1006185029Spjd				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1007185029Spjd				goto error;
1008185029Spjd			}
1009185029Spjd
1010168404Spjd			(void) nvpair_value_string(elem, &strval);
1011168404Spjd			if (nvlist_add_string(ret, propname, strval) != 0) {
1012168404Spjd				(void) no_memory(hdl);
1013168404Spjd				goto error;
1014168404Spjd			}
1015168404Spjd			continue;
1016168404Spjd		}
1017168404Spjd
1018209962Smm		/*
1019209962Smm		 * Currently, only user properties can be modified on
1020209962Smm		 * snapshots.
1021209962Smm		 */
1022185029Spjd		if (type == ZFS_TYPE_SNAPSHOT) {
1023185029Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1024185029Spjd			    "this property can not be modified for snapshots"));
1025185029Spjd			(void) zfs_error(hdl, EZFS_PROPTYPE, errbuf);
1026185029Spjd			goto error;
1027185029Spjd		}
1028168404Spjd
1029209962Smm		if (prop == ZPROP_INVAL && zfs_prop_userquota(propname)) {
1030209962Smm			zfs_userquota_prop_t uqtype;
1031209962Smm			char newpropname[128];
1032209962Smm			char domain[128];
1033209962Smm			uint64_t rid;
1034209962Smm			uint64_t valary[3];
1035209962Smm
1036209962Smm			if (userquota_propname_decode(propname, zoned,
1037209962Smm			    &uqtype, domain, sizeof (domain), &rid) != 0) {
1038209962Smm				zfs_error_aux(hdl,
1039209962Smm				    dgettext(TEXT_DOMAIN,
1040209962Smm				    "'%s' has an invalid user/group name"),
1041209962Smm				    propname);
1042209962Smm				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1043209962Smm				goto error;
1044209962Smm			}
1045209962Smm
1046209962Smm			if (uqtype != ZFS_PROP_USERQUOTA &&
1047209962Smm			    uqtype != ZFS_PROP_GROUPQUOTA) {
1048209962Smm				zfs_error_aux(hdl,
1049209962Smm				    dgettext(TEXT_DOMAIN, "'%s' is readonly"),
1050209962Smm				    propname);
1051209962Smm				(void) zfs_error(hdl, EZFS_PROPREADONLY,
1052209962Smm				    errbuf);
1053209962Smm				goto error;
1054209962Smm			}
1055209962Smm
1056209962Smm			if (nvpair_type(elem) == DATA_TYPE_STRING) {
1057209962Smm				(void) nvpair_value_string(elem, &strval);
1058209962Smm				if (strcmp(strval, "none") == 0) {
1059209962Smm					intval = 0;
1060209962Smm				} else if (zfs_nicestrtonum(hdl,
1061209962Smm				    strval, &intval) != 0) {
1062209962Smm					(void) zfs_error(hdl,
1063209962Smm					    EZFS_BADPROP, errbuf);
1064209962Smm					goto error;
1065209962Smm				}
1066209962Smm			} else if (nvpair_type(elem) ==
1067209962Smm			    DATA_TYPE_UINT64) {
1068209962Smm				(void) nvpair_value_uint64(elem, &intval);
1069209962Smm				if (intval == 0) {
1070209962Smm					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1071209962Smm					    "use 'none' to disable "
1072209962Smm					    "userquota/groupquota"));
1073209962Smm					goto error;
1074209962Smm				}
1075209962Smm			} else {
1076209962Smm				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1077209962Smm				    "'%s' must be a number"), propname);
1078209962Smm				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1079209962Smm				goto error;
1080209962Smm			}
1081209962Smm
1082219089Spjd			/*
1083219089Spjd			 * Encode the prop name as
1084219089Spjd			 * userquota@<hex-rid>-domain, to make it easy
1085219089Spjd			 * for the kernel to decode.
1086219089Spjd			 */
1087209962Smm			(void) snprintf(newpropname, sizeof (newpropname),
1088219089Spjd			    "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype],
1089219089Spjd			    (longlong_t)rid, domain);
1090209962Smm			valary[0] = uqtype;
1091209962Smm			valary[1] = rid;
1092209962Smm			valary[2] = intval;
1093209962Smm			if (nvlist_add_uint64_array(ret, newpropname,
1094209962Smm			    valary, 3) != 0) {
1095209962Smm				(void) no_memory(hdl);
1096209962Smm				goto error;
1097209962Smm			}
1098209962Smm			continue;
1099228103Smm		} else if (prop == ZPROP_INVAL && zfs_prop_written(propname)) {
1100228103Smm			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1101228103Smm			    "'%s' is readonly"),
1102228103Smm			    propname);
1103228103Smm			(void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf);
1104228103Smm			goto error;
1105209962Smm		}
1106209962Smm
1107209962Smm		if (prop == ZPROP_INVAL) {
1108209962Smm			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1109209962Smm			    "invalid property '%s'"), propname);
1110209962Smm			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1111209962Smm			goto error;
1112209962Smm		}
1113209962Smm
1114168404Spjd		if (!zfs_prop_valid_for_type(prop, type)) {
1115168404Spjd			zfs_error_aux(hdl,
1116168404Spjd			    dgettext(TEXT_DOMAIN, "'%s' does not "
1117168404Spjd			    "apply to datasets of this type"), propname);
1118168404Spjd			(void) zfs_error(hdl, EZFS_PROPTYPE, errbuf);
1119168404Spjd			goto error;
1120168404Spjd		}
1121168404Spjd
1122168404Spjd		if (zfs_prop_readonly(prop) &&
1123185029Spjd		    (!zfs_prop_setonce(prop) || zhp != NULL)) {
1124168404Spjd			zfs_error_aux(hdl,
1125168404Spjd			    dgettext(TEXT_DOMAIN, "'%s' is readonly"),
1126168404Spjd			    propname);
1127168404Spjd			(void) zfs_error(hdl, EZFS_PROPREADONLY, errbuf);
1128168404Spjd			goto error;
1129168404Spjd		}
1130168404Spjd
1131185029Spjd		if (zprop_parse_value(hdl, elem, prop, type, ret,
1132185029Spjd		    &strval, &intval, errbuf) != 0)
1133185029Spjd			goto error;
1134185029Spjd
1135168404Spjd		/*
1136185029Spjd		 * Perform some additional checks for specific properties.
1137168404Spjd		 */
1138185029Spjd		switch (prop) {
1139185029Spjd		case ZFS_PROP_VERSION:
1140185029Spjd		{
1141185029Spjd			int version;
1142168404Spjd
1143185029Spjd			if (zhp == NULL)
1144185029Spjd				break;
1145185029Spjd			version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
1146185029Spjd			if (intval < version) {
1147168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1148185029Spjd				    "Can not downgrade; already at version %u"),
1149185029Spjd				    version);
1150168404Spjd				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1151168404Spjd				goto error;
1152168404Spjd			}
1153168404Spjd			break;
1154168404Spjd		}
1155168404Spjd
1156274337Sdelphij		case ZFS_PROP_VOLBLOCKSIZE:
1157168404Spjd		case ZFS_PROP_RECORDSIZE:
1158274337Sdelphij		{
1159274337Sdelphij			int maxbs = SPA_MAXBLOCKSIZE;
1160289500Smav			if (zpool_hdl != NULL) {
1161289500Smav				maxbs = zpool_get_prop_int(zpool_hdl,
1162274337Sdelphij				    ZPOOL_PROP_MAXBLOCKSIZE, NULL);
1163274337Sdelphij			}
1164274337Sdelphij			/*
1165274337Sdelphij			 * Volumes are limited to a volblocksize of 128KB,
1166274337Sdelphij			 * because they typically service workloads with
1167274337Sdelphij			 * small random writes, which incur a large performance
1168274337Sdelphij			 * penalty with large blocks.
1169274337Sdelphij			 */
1170274337Sdelphij			if (prop == ZFS_PROP_VOLBLOCKSIZE)
1171274337Sdelphij				maxbs = SPA_OLD_MAXBLOCKSIZE;
1172274337Sdelphij			/*
1173274337Sdelphij			 * The value must be a power of two between
1174274337Sdelphij			 * SPA_MINBLOCKSIZE and maxbs.
1175274337Sdelphij			 */
1176168404Spjd			if (intval < SPA_MINBLOCKSIZE ||
1177274337Sdelphij			    intval > maxbs || !ISP2(intval)) {
1178168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1179274337Sdelphij				    "'%s' must be power of 2 from 512B "
1180274337Sdelphij				    "to %uKB"), propname, maxbs >> 10);
1181168404Spjd				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1182168404Spjd				goto error;
1183168404Spjd			}
1184168404Spjd			break;
1185274337Sdelphij		}
1186219089Spjd		case ZFS_PROP_MLSLABEL:
1187219089Spjd		{
1188277300Ssmh#ifdef illumos
1189219089Spjd			/*
1190219089Spjd			 * Verify the mlslabel string and convert to
1191219089Spjd			 * internal hex label string.
1192219089Spjd			 */
1193219089Spjd
1194219089Spjd			m_label_t *new_sl;
1195219089Spjd			char *hex = NULL;	/* internal label string */
1196219089Spjd
1197219089Spjd			/* Default value is already OK. */
1198219089Spjd			if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
1199219089Spjd				break;
1200219089Spjd
1201219089Spjd			/* Verify the label can be converted to binary form */
1202219089Spjd			if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) ||
1203219089Spjd			    (str_to_label(strval, &new_sl, MAC_LABEL,
1204219089Spjd			    L_NO_CORRECTION, NULL) == -1)) {
1205219089Spjd				goto badlabel;
1206168404Spjd			}
1207168404Spjd
1208219089Spjd			/* Now translate to hex internal label string */
1209219089Spjd			if (label_to_str(new_sl, &hex, M_INTERNAL,
1210219089Spjd			    DEF_NAMES) != 0) {
1211219089Spjd				if (hex)
1212219089Spjd					free(hex);
1213219089Spjd				goto badlabel;
1214219089Spjd			}
1215219089Spjd			m_label_free(new_sl);
1216219089Spjd
1217219089Spjd			/* If string is already in internal form, we're done. */
1218219089Spjd			if (strcmp(strval, hex) == 0) {
1219219089Spjd				free(hex);
1220219089Spjd				break;
1221219089Spjd			}
1222219089Spjd
1223219089Spjd			/* Replace the label string with the internal form. */
1224219089Spjd			(void) nvlist_remove(ret, zfs_prop_to_name(prop),
1225219089Spjd			    DATA_TYPE_STRING);
1226219089Spjd			verify(nvlist_add_string(ret, zfs_prop_to_name(prop),
1227219089Spjd			    hex) == 0);
1228219089Spjd			free(hex);
1229219089Spjd
1230168404Spjd			break;
1231168404Spjd
1232219089Spjdbadlabel:
1233219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1234219089Spjd			    "invalid mlslabel '%s'"), strval);
1235219089Spjd			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1236219089Spjd			m_label_free(new_sl);	/* OK if null */
1237277300Ssmh#else	/* !illumos */
1238219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1239219089Spjd			    "mlslabel is not supported on FreeBSD"));
1240219089Spjd			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1241277300Ssmh#endif	/* illumos */
1242219089Spjd			goto error;
1243219089Spjd
1244219089Spjd		}
1245219089Spjd
1246168404Spjd		case ZFS_PROP_MOUNTPOINT:
1247185029Spjd		{
1248185029Spjd			namecheck_err_t why;
1249185029Spjd
1250168404Spjd			if (strcmp(strval, ZFS_MOUNTPOINT_NONE) == 0 ||
1251168404Spjd			    strcmp(strval, ZFS_MOUNTPOINT_LEGACY) == 0)
1252168404Spjd				break;
1253168404Spjd
1254185029Spjd			if (mountpoint_namecheck(strval, &why)) {
1255185029Spjd				switch (why) {
1256185029Spjd				case NAME_ERR_LEADING_SLASH:
1257185029Spjd					zfs_error_aux(hdl,
1258185029Spjd					    dgettext(TEXT_DOMAIN,
1259185029Spjd					    "'%s' must be an absolute path, "
1260185029Spjd					    "'none', or 'legacy'"), propname);
1261185029Spjd					break;
1262185029Spjd				case NAME_ERR_TOOLONG:
1263185029Spjd					zfs_error_aux(hdl,
1264185029Spjd					    dgettext(TEXT_DOMAIN,
1265185029Spjd					    "component of '%s' is too long"),
1266185029Spjd					    propname);
1267185029Spjd					break;
1268307050Smav
1269307050Smav				default:
1270307050Smav					zfs_error_aux(hdl,
1271307050Smav					    dgettext(TEXT_DOMAIN,
1272307050Smav					    "(%d) not defined"),
1273307050Smav					    why);
1274307050Smav					break;
1275185029Spjd				}
1276168404Spjd				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1277168404Spjd				goto error;
1278168404Spjd			}
1279185029Spjd		}
1280185029Spjd
1281168404Spjd			/*FALLTHRU*/
1282168404Spjd
1283185029Spjd		case ZFS_PROP_SHARESMB:
1284168404Spjd		case ZFS_PROP_SHARENFS:
1285168404Spjd			/*
1286185029Spjd			 * For the mountpoint and sharenfs or sharesmb
1287185029Spjd			 * properties, check if it can be set in a
1288185029Spjd			 * global/non-global zone based on
1289168404Spjd			 * the zoned property value:
1290168404Spjd			 *
1291168404Spjd			 *		global zone	    non-global zone
1292168404Spjd			 * --------------------------------------------------
1293168404Spjd			 * zoned=on	mountpoint (no)	    mountpoint (yes)
1294168404Spjd			 *		sharenfs (no)	    sharenfs (no)
1295185029Spjd			 *		sharesmb (no)	    sharesmb (no)
1296168404Spjd			 *
1297168404Spjd			 * zoned=off	mountpoint (yes)	N/A
1298168404Spjd			 *		sharenfs (yes)
1299185029Spjd			 *		sharesmb (yes)
1300168404Spjd			 */
1301168404Spjd			if (zoned) {
1302168404Spjd				if (getzoneid() == GLOBAL_ZONEID) {
1303168404Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1304168404Spjd					    "'%s' cannot be set on "
1305168404Spjd					    "dataset in a non-global zone"),
1306168404Spjd					    propname);
1307168404Spjd					(void) zfs_error(hdl, EZFS_ZONED,
1308168404Spjd					    errbuf);
1309168404Spjd					goto error;
1310185029Spjd				} else if (prop == ZFS_PROP_SHARENFS ||
1311185029Spjd				    prop == ZFS_PROP_SHARESMB) {
1312168404Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1313168404Spjd					    "'%s' cannot be set in "
1314168404Spjd					    "a non-global zone"), propname);
1315168404Spjd					(void) zfs_error(hdl, EZFS_ZONED,
1316168404Spjd					    errbuf);
1317168404Spjd					goto error;
1318168404Spjd				}
1319168404Spjd			} else if (getzoneid() != GLOBAL_ZONEID) {
1320168404Spjd				/*
1321168404Spjd				 * If zoned property is 'off', this must be in
1322209962Smm				 * a global zone. If not, something is wrong.
1323168404Spjd				 */
1324168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1325168404Spjd				    "'%s' cannot be set while dataset "
1326168404Spjd				    "'zoned' property is set"), propname);
1327168404Spjd				(void) zfs_error(hdl, EZFS_ZONED, errbuf);
1328168404Spjd				goto error;
1329168404Spjd			}
1330168404Spjd
1331168404Spjd			/*
1332185029Spjd			 * At this point, it is legitimate to set the
1333185029Spjd			 * property. Now we want to make sure that the
1334185029Spjd			 * property value is valid if it is sharenfs.
1335168404Spjd			 */
1336185029Spjd			if ((prop == ZFS_PROP_SHARENFS ||
1337185029Spjd			    prop == ZFS_PROP_SHARESMB) &&
1338185029Spjd			    strcmp(strval, "on") != 0 &&
1339185029Spjd			    strcmp(strval, "off") != 0) {
1340185029Spjd				zfs_share_proto_t proto;
1341168404Spjd
1342185029Spjd				if (prop == ZFS_PROP_SHARESMB)
1343185029Spjd					proto = PROTO_SMB;
1344185029Spjd				else
1345185029Spjd					proto = PROTO_NFS;
1346185029Spjd
1347185029Spjd				/*
1348185029Spjd				 * Must be an valid sharing protocol
1349185029Spjd				 * option string so init the libshare
1350185029Spjd				 * in order to enable the parser and
1351185029Spjd				 * then parse the options. We use the
1352185029Spjd				 * control API since we don't care about
1353185029Spjd				 * the current configuration and don't
1354185029Spjd				 * want the overhead of loading it
1355185029Spjd				 * until we actually do something.
1356185029Spjd				 */
1357185029Spjd
1358185029Spjd				if (zfs_init_libshare(hdl,
1359185029Spjd				    SA_INIT_CONTROL_API) != SA_OK) {
1360185029Spjd					/*
1361185029Spjd					 * An error occurred so we can't do
1362185029Spjd					 * anything
1363185029Spjd					 */
1364185029Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1365185029Spjd					    "'%s' cannot be set: problem "
1366185029Spjd					    "in share initialization"),
1367185029Spjd					    propname);
1368185029Spjd					(void) zfs_error(hdl, EZFS_BADPROP,
1369185029Spjd					    errbuf);
1370185029Spjd					goto error;
1371185029Spjd				}
1372185029Spjd
1373185029Spjd				if (zfs_parse_options(strval, proto) != SA_OK) {
1374185029Spjd					/*
1375185029Spjd					 * There was an error in parsing so
1376185029Spjd					 * deal with it by issuing an error
1377185029Spjd					 * message and leaving after
1378185029Spjd					 * uninitializing the the libshare
1379185029Spjd					 * interface.
1380185029Spjd					 */
1381185029Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1382185029Spjd					    "'%s' cannot be set to invalid "
1383185029Spjd					    "options"), propname);
1384185029Spjd					(void) zfs_error(hdl, EZFS_BADPROP,
1385185029Spjd					    errbuf);
1386185029Spjd					zfs_uninit_libshare(hdl);
1387185029Spjd					goto error;
1388185029Spjd				}
1389185029Spjd				zfs_uninit_libshare(hdl);
1390168404Spjd			}
1391185029Spjd
1392168404Spjd			break;
1393307050Smav
1394185029Spjd		case ZFS_PROP_UTF8ONLY:
1395185029Spjd			chosen_utf = (int)intval;
1396185029Spjd			break;
1397307050Smav
1398185029Spjd		case ZFS_PROP_NORMALIZE:
1399185029Spjd			chosen_normal = (int)intval;
1400185029Spjd			break;
1401307050Smav
1402307050Smav		default:
1403307050Smav			break;
1404168404Spjd		}
1405168404Spjd
1406168404Spjd		/*
1407168404Spjd		 * For changes to existing volumes, we have some additional
1408168404Spjd		 * checks to enforce.
1409168404Spjd		 */
1410168404Spjd		if (type == ZFS_TYPE_VOLUME && zhp != NULL) {
1411168404Spjd			uint64_t volsize = zfs_prop_get_int(zhp,
1412168404Spjd			    ZFS_PROP_VOLSIZE);
1413168404Spjd			uint64_t blocksize = zfs_prop_get_int(zhp,
1414168404Spjd			    ZFS_PROP_VOLBLOCKSIZE);
1415168404Spjd			char buf[64];
1416168404Spjd
1417168404Spjd			switch (prop) {
1418168404Spjd			case ZFS_PROP_RESERVATION:
1419168404Spjd				if (intval > volsize) {
1420168404Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1421168404Spjd					    "'%s' is greater than current "
1422168404Spjd					    "volume size"), propname);
1423168404Spjd					(void) zfs_error(hdl, EZFS_BADPROP,
1424168404Spjd					    errbuf);
1425168404Spjd					goto error;
1426168404Spjd				}
1427168404Spjd				break;
1428168404Spjd
1429339103Smav			case ZFS_PROP_REFRESERVATION:
1430339103Smav				if (intval > volsize && intval != UINT64_MAX) {
1431339103Smav					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1432339103Smav					    "'%s' is greater than current "
1433339103Smav					    "volume size"), propname);
1434339103Smav					(void) zfs_error(hdl, EZFS_BADPROP,
1435339103Smav					    errbuf);
1436339103Smav					goto error;
1437339103Smav				}
1438339103Smav				break;
1439339103Smav
1440168404Spjd			case ZFS_PROP_VOLSIZE:
1441168404Spjd				if (intval % blocksize != 0) {
1442168404Spjd					zfs_nicenum(blocksize, buf,
1443168404Spjd					    sizeof (buf));
1444168404Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1445168404Spjd					    "'%s' must be a multiple of "
1446168404Spjd					    "volume block size (%s)"),
1447168404Spjd					    propname, buf);
1448168404Spjd					(void) zfs_error(hdl, EZFS_BADPROP,
1449168404Spjd					    errbuf);
1450168404Spjd					goto error;
1451168404Spjd				}
1452168404Spjd
1453168404Spjd				if (intval == 0) {
1454168404Spjd					zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1455168404Spjd					    "'%s' cannot be zero"),
1456168404Spjd					    propname);
1457168404Spjd					(void) zfs_error(hdl, EZFS_BADPROP,
1458168404Spjd					    errbuf);
1459168404Spjd					goto error;
1460168404Spjd				}
1461168404Spjd				break;
1462307050Smav
1463307050Smav			default:
1464307050Smav				break;
1465168404Spjd			}
1466168404Spjd		}
1467168404Spjd	}
1468168404Spjd
1469168404Spjd	/*
1470185029Spjd	 * If normalization was chosen, but no UTF8 choice was made,
1471185029Spjd	 * enforce rejection of non-UTF8 names.
1472185029Spjd	 *
1473185029Spjd	 * If normalization was chosen, but rejecting non-UTF8 names
1474185029Spjd	 * was explicitly not chosen, it is an error.
1475185029Spjd	 */
1476185029Spjd	if (chosen_normal > 0 && chosen_utf < 0) {
1477185029Spjd		if (nvlist_add_uint64(ret,
1478185029Spjd		    zfs_prop_to_name(ZFS_PROP_UTF8ONLY), 1) != 0) {
1479185029Spjd			(void) no_memory(hdl);
1480185029Spjd			goto error;
1481185029Spjd		}
1482185029Spjd	} else if (chosen_normal > 0 && chosen_utf == 0) {
1483185029Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1484185029Spjd		    "'%s' must be set 'on' if normalization chosen"),
1485185029Spjd		    zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
1486185029Spjd		(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1487185029Spjd		goto error;
1488185029Spjd	}
1489219089Spjd	return (ret);
1490185029Spjd
1491219089Spjderror:
1492219089Spjd	nvlist_free(ret);
1493219089Spjd	return (NULL);
1494219089Spjd}
1495219089Spjd
1496219089Spjdint
1497219089Spjdzfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl)
1498219089Spjd{
1499219089Spjd	uint64_t old_volsize;
1500219089Spjd	uint64_t new_volsize;
1501219089Spjd	uint64_t old_reservation;
1502219089Spjd	uint64_t new_reservation;
1503219089Spjd	zfs_prop_t resv_prop;
1504289499Smav	nvlist_t *props;
1505219089Spjd
1506185029Spjd	/*
1507168404Spjd	 * If this is an existing volume, and someone is setting the volsize,
1508168404Spjd	 * make sure that it matches the reservation, or add it if necessary.
1509168404Spjd	 */
1510219089Spjd	old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
1511219089Spjd	if (zfs_which_resv_prop(zhp, &resv_prop) < 0)
1512219089Spjd		return (-1);
1513219089Spjd	old_reservation = zfs_prop_get_int(zhp, resv_prop);
1514289499Smav
1515289499Smav	props = fnvlist_alloc();
1516289499Smav	fnvlist_add_uint64(props, zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
1517289499Smav	    zfs_prop_get_int(zhp, ZFS_PROP_VOLBLOCKSIZE));
1518289499Smav
1519289499Smav	if ((zvol_volsize_to_reservation(old_volsize, props) !=
1520289499Smav	    old_reservation) || nvlist_exists(nvl,
1521289499Smav	    zfs_prop_to_name(resv_prop))) {
1522289499Smav		fnvlist_free(props);
1523219089Spjd		return (0);
1524219089Spjd	}
1525219089Spjd	if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE),
1526289499Smav	    &new_volsize) != 0) {
1527289499Smav		fnvlist_free(props);
1528219089Spjd		return (-1);
1529289499Smav	}
1530289499Smav	new_reservation = zvol_volsize_to_reservation(new_volsize, props);
1531289499Smav	fnvlist_free(props);
1532289499Smav
1533219089Spjd	if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop),
1534219089Spjd	    new_reservation) != 0) {
1535219089Spjd		(void) no_memory(zhp->zfs_hdl);
1536219089Spjd		return (-1);
1537219089Spjd	}
1538219089Spjd	return (1);
1539219089Spjd}
1540168404Spjd
1541339103Smav/*
1542339103Smav * Helper for 'zfs {set|clone} refreservation=auto'.  Must be called after
1543339103Smav * zfs_valid_proplist(), as it is what sets the UINT64_MAX sentinal value.
1544339103Smav * Return codes must match zfs_add_synthetic_resv().
1545339103Smav */
1546339103Smavstatic int
1547339103Smavzfs_fix_auto_resv(zfs_handle_t *zhp, nvlist_t *nvl)
1548339103Smav{
1549339103Smav	uint64_t volsize;
1550339103Smav	uint64_t resvsize;
1551339103Smav	zfs_prop_t prop;
1552339103Smav	nvlist_t *props;
1553339103Smav
1554339103Smav	if (!ZFS_IS_VOLUME(zhp)) {
1555339103Smav		return (0);
1556339103Smav	}
1557339103Smav
1558339103Smav	if (zfs_which_resv_prop(zhp, &prop) != 0) {
1559339103Smav		return (-1);
1560339103Smav	}
1561339103Smav
1562339103Smav	if (prop != ZFS_PROP_REFRESERVATION) {
1563339103Smav		return (0);
1564339103Smav	}
1565339103Smav
1566339103Smav	if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(prop), &resvsize) != 0) {
1567339103Smav		/* No value being set, so it can't be "auto" */
1568339103Smav		return (0);
1569339103Smav	}
1570339103Smav	if (resvsize != UINT64_MAX) {
1571339103Smav		/* Being set to a value other than "auto" */
1572339103Smav		return (0);
1573339103Smav	}
1574339103Smav
1575339103Smav	props = fnvlist_alloc();
1576339103Smav
1577339103Smav	fnvlist_add_uint64(props, zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
1578339103Smav	    zfs_prop_get_int(zhp, ZFS_PROP_VOLBLOCKSIZE));
1579339103Smav
1580339103Smav	if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE),
1581339103Smav	    &volsize) != 0) {
1582339103Smav		volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
1583339103Smav	}
1584339103Smav
1585339103Smav	resvsize = zvol_volsize_to_reservation(volsize, props);
1586339103Smav	fnvlist_free(props);
1587339103Smav
1588339103Smav	(void) nvlist_remove_all(nvl, zfs_prop_to_name(prop));
1589339103Smav	if (nvlist_add_uint64(nvl, zfs_prop_to_name(prop), resvsize) != 0) {
1590339103Smav		(void) no_memory(zhp->zfs_hdl);
1591339103Smav		return (-1);
1592339103Smav	}
1593339103Smav	return (1);
1594339103Smav}
1595339103Smav
1596219089Spjdvoid
1597219089Spjdzfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err,
1598219089Spjd    char *errbuf)
1599219089Spjd{
1600219089Spjd	switch (err) {
1601185029Spjd
1602219089Spjd	case ENOSPC:
1603219089Spjd		/*
1604219089Spjd		 * For quotas and reservations, ENOSPC indicates
1605219089Spjd		 * something different; setting a quota or reservation
1606219089Spjd		 * doesn't use any disk space.
1607219089Spjd		 */
1608219089Spjd		switch (prop) {
1609219089Spjd		case ZFS_PROP_QUOTA:
1610219089Spjd		case ZFS_PROP_REFQUOTA:
1611219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1612219089Spjd			    "size is less than current used or "
1613219089Spjd			    "reserved space"));
1614219089Spjd			(void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
1615219089Spjd			break;
1616219089Spjd
1617219089Spjd		case ZFS_PROP_RESERVATION:
1618219089Spjd		case ZFS_PROP_REFRESERVATION:
1619219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1620219089Spjd			    "size is greater than available space"));
1621219089Spjd			(void) zfs_error(hdl, EZFS_PROPSPACE, errbuf);
1622219089Spjd			break;
1623219089Spjd
1624219089Spjd		default:
1625219089Spjd			(void) zfs_standard_error(hdl, err, errbuf);
1626219089Spjd			break;
1627168404Spjd		}
1628219089Spjd		break;
1629219089Spjd
1630219089Spjd	case EBUSY:
1631219089Spjd		(void) zfs_standard_error(hdl, EBUSY, errbuf);
1632219089Spjd		break;
1633219089Spjd
1634219089Spjd	case EROFS:
1635219089Spjd		(void) zfs_error(hdl, EZFS_DSREADONLY, errbuf);
1636219089Spjd		break;
1637219089Spjd
1638271764Swill	case E2BIG:
1639271764Swill		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1640271764Swill		    "property value too long"));
1641271764Swill		(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1642271764Swill		break;
1643271764Swill
1644219089Spjd	case ENOTSUP:
1645219089Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1646219089Spjd		    "pool and or dataset must be upgraded to set this "
1647219089Spjd		    "property or value"));
1648219089Spjd		(void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
1649219089Spjd		break;
1650219089Spjd
1651219089Spjd	case ERANGE:
1652274337Sdelphij	case EDOM:
1653274337Sdelphij		if (prop == ZFS_PROP_COMPRESSION ||
1654274337Sdelphij		    prop == ZFS_PROP_RECORDSIZE) {
1655219089Spjd			(void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1656219089Spjd			    "property setting is not allowed on "
1657219089Spjd			    "bootable datasets"));
1658219089Spjd			(void) zfs_error(hdl, EZFS_NOTSUP, errbuf);
1659289422Smav		} else if (prop == ZFS_PROP_CHECKSUM ||
1660289422Smav		    prop == ZFS_PROP_DEDUP) {
1661289422Smav			(void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1662289422Smav			    "property setting is not allowed on "
1663289422Smav			    "root pools"));
1664289422Smav			(void) zfs_error(hdl, EZFS_NOTSUP, errbuf);
1665219089Spjd		} else {
1666219089Spjd			(void) zfs_standard_error(hdl, err, errbuf);
1667219089Spjd		}
1668219089Spjd		break;
1669219089Spjd
1670219089Spjd	case EINVAL:
1671219089Spjd		if (prop == ZPROP_INVAL) {
1672219089Spjd			(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
1673219089Spjd		} else {
1674219089Spjd			(void) zfs_standard_error(hdl, err, errbuf);
1675219089Spjd		}
1676219089Spjd		break;
1677219089Spjd
1678219089Spjd	case EOVERFLOW:
1679219089Spjd		/*
1680219089Spjd		 * This platform can't address a volume this big.
1681219089Spjd		 */
1682219089Spjd#ifdef _ILP32
1683219089Spjd		if (prop == ZFS_PROP_VOLSIZE) {
1684219089Spjd			(void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf);
1685219089Spjd			break;
1686219089Spjd		}
1687219089Spjd#endif
1688219089Spjd		/* FALLTHROUGH */
1689219089Spjd	default:
1690219089Spjd		(void) zfs_standard_error(hdl, err, errbuf);
1691168404Spjd	}
1692168404Spjd}
1693168404Spjd
1694168404Spjd/*
1695168404Spjd * Given a property name and value, set the property for the given dataset.
1696168404Spjd */
1697168404Spjdint
1698168404Spjdzfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval)
1699168404Spjd{
1700168404Spjd	int ret = -1;
1701168404Spjd	char errbuf[1024];
1702168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
1703289497Smav	nvlist_t *nvl = NULL;
1704168404Spjd
1705168404Spjd	(void) snprintf(errbuf, sizeof (errbuf),
1706168404Spjd	    dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
1707168404Spjd	    zhp->zfs_name);
1708168404Spjd
1709168404Spjd	if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0 ||
1710168404Spjd	    nvlist_add_string(nvl, propname, propval) != 0) {
1711168404Spjd		(void) no_memory(hdl);
1712168404Spjd		goto error;
1713168404Spjd	}
1714168404Spjd
1715289497Smav	ret = zfs_prop_set_list(zhp, nvl);
1716185029Spjd
1717289497Smaverror:
1718168404Spjd	nvlist_free(nvl);
1719289497Smav	return (ret);
1720289497Smav}
1721168404Spjd
1722168404Spjd
1723168404Spjd
1724289497Smav/*
1725289497Smav * Given an nvlist of property names and values, set the properties for the
1726289497Smav * given dataset.
1727289497Smav */
1728289497Smavint
1729289497Smavzfs_prop_set_list(zfs_handle_t *zhp, nvlist_t *props)
1730289497Smav{
1731289497Smav	zfs_cmd_t zc = { 0 };
1732289497Smav	int ret = -1;
1733289497Smav	prop_changelist_t **cls = NULL;
1734289497Smav	int cl_idx;
1735289497Smav	char errbuf[1024];
1736289497Smav	libzfs_handle_t *hdl = zhp->zfs_hdl;
1737289497Smav	nvlist_t *nvl;
1738289497Smav	int nvl_len;
1739307107Smav	int added_resv = 0;
1740219089Spjd
1741289497Smav	(void) snprintf(errbuf, sizeof (errbuf),
1742289497Smav	    dgettext(TEXT_DOMAIN, "cannot set property for '%s'"),
1743289497Smav	    zhp->zfs_name);
1744168404Spjd
1745289497Smav	if ((nvl = zfs_valid_proplist(hdl, zhp->zfs_type, props,
1746289500Smav	    zfs_prop_get_int(zhp, ZFS_PROP_ZONED), zhp, zhp->zpool_hdl,
1747289500Smav	    errbuf)) == NULL)
1748168404Spjd		goto error;
1749168404Spjd
1750185029Spjd	/*
1751289497Smav	 * We have to check for any extra properties which need to be added
1752289497Smav	 * before computing the length of the nvlist.
1753185029Spjd	 */
1754289497Smav	for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL);
1755289497Smav	    elem != NULL;
1756289497Smav	    elem = nvlist_next_nvpair(nvl, elem)) {
1757289497Smav		if (zfs_name_to_prop(nvpair_name(elem)) == ZFS_PROP_VOLSIZE &&
1758289497Smav		    (added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) {
1759289497Smav			goto error;
1760289497Smav		}
1761238391Smm	}
1762339103Smav
1763339103Smav	if (added_resv != 1 &&
1764339103Smav	    (added_resv = zfs_fix_auto_resv(zhp, nvl)) == -1) {
1765339103Smav		goto error;
1766339103Smav	}
1767339103Smav
1768289497Smav	/*
1769289497Smav	 * Check how many properties we're setting and allocate an array to
1770289497Smav	 * store changelist pointers for postfix().
1771289497Smav	 */
1772289497Smav	nvl_len = 0;
1773289497Smav	for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL);
1774289497Smav	    elem != NULL;
1775289497Smav	    elem = nvlist_next_nvpair(nvl, elem))
1776289497Smav		nvl_len++;
1777289497Smav	if ((cls = calloc(nvl_len, sizeof (prop_changelist_t *))) == NULL)
1778168404Spjd		goto error;
1779168404Spjd
1780289497Smav	cl_idx = 0;
1781289497Smav	for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL);
1782289497Smav	    elem != NULL;
1783289497Smav	    elem = nvlist_next_nvpair(nvl, elem)) {
1784289497Smav
1785289497Smav		zfs_prop_t prop = zfs_name_to_prop(nvpair_name(elem));
1786289497Smav
1787289497Smav		assert(cl_idx < nvl_len);
1788289497Smav		/*
1789289497Smav		 * We don't want to unmount & remount the dataset when changing
1790310068Savg		 * its canmount property to 'on' or 'noauto'.  We only use
1791310068Savg		 * the changelist logic to unmount when setting canmount=off.
1792289497Smav		 */
1793297521Savg		if (prop != ZFS_PROP_CANMOUNT ||
1794297521Savg		    (fnvpair_value_uint64(elem) == ZFS_CANMOUNT_OFF &&
1795321522Smav		    zfs_is_mounted(zhp, NULL))) {
1796289497Smav			cls[cl_idx] = changelist_gather(zhp, prop, 0, 0);
1797289497Smav			if (cls[cl_idx] == NULL)
1798289497Smav				goto error;
1799289497Smav		}
1800289497Smav
1801289497Smav		if (prop == ZFS_PROP_MOUNTPOINT &&
1802289497Smav		    changelist_haszonedchild(cls[cl_idx])) {
1803289497Smav			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1804289497Smav			    "child dataset with inherited mountpoint is used "
1805289497Smav			    "in a non-global zone"));
1806289497Smav			ret = zfs_error(hdl, EZFS_ZONED, errbuf);
1807289497Smav			goto error;
1808289497Smav		}
1809289497Smav
1810289497Smav		/* We don't support those properties on FreeBSD. */
1811289497Smav		switch (prop) {
1812289497Smav		case ZFS_PROP_DEVICES:
1813289497Smav		case ZFS_PROP_ISCSIOPTIONS:
1814289497Smav		case ZFS_PROP_XATTR:
1815289497Smav		case ZFS_PROP_VSCAN:
1816289497Smav		case ZFS_PROP_NBMAND:
1817289497Smav		case ZFS_PROP_MLSLABEL:
1818289497Smav			(void) snprintf(errbuf, sizeof (errbuf),
1819289497Smav			    "property '%s' not supported on FreeBSD",
1820289497Smav			    nvpair_name(elem));
1821289497Smav			ret = zfs_error(hdl, EZFS_PERM, errbuf);
1822289497Smav			goto error;
1823289497Smav		}
1824289497Smav
1825289497Smav		if (cls[cl_idx] != NULL &&
1826289497Smav		    (ret = changelist_prefix(cls[cl_idx])) != 0)
1827289497Smav			goto error;
1828289497Smav
1829289497Smav		cl_idx++;
1830289497Smav	}
1831289497Smav	assert(cl_idx == nvl_len);
1832289497Smav
1833168404Spjd	/*
1834289497Smav	 * Execute the corresponding ioctl() to set this list of properties.
1835168404Spjd	 */
1836168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1837168404Spjd
1838289497Smav	if ((ret = zcmd_write_src_nvlist(hdl, &zc, nvl)) != 0 ||
1839289497Smav	    (ret = zcmd_alloc_dst_nvlist(hdl, &zc, 0)) != 0)
1840168404Spjd		goto error;
1841168404Spjd
1842185029Spjd	ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc);
1843209962Smm
1844168404Spjd	if (ret != 0) {
1845289497Smav		/* Get the list of unset properties back and report them. */
1846289497Smav		nvlist_t *errorprops = NULL;
1847289497Smav		if (zcmd_read_dst_nvlist(hdl, &zc, &errorprops) != 0)
1848289497Smav			goto error;
1849289497Smav		for (nvpair_t *elem = nvlist_next_nvpair(nvl, NULL);
1850289497Smav		    elem != NULL;
1851289497Smav		    elem = nvlist_next_nvpair(nvl, elem)) {
1852289497Smav			zfs_prop_t prop = zfs_name_to_prop(nvpair_name(elem));
1853289497Smav			zfs_setprop_error(hdl, prop, errno, errbuf);
1854289497Smav		}
1855289497Smav		nvlist_free(errorprops);
1856289497Smav
1857219089Spjd		if (added_resv && errno == ENOSPC) {
1858219089Spjd			/* clean up the volsize property we tried to set */
1859219089Spjd			uint64_t old_volsize = zfs_prop_get_int(zhp,
1860219089Spjd			    ZFS_PROP_VOLSIZE);
1861219089Spjd			nvlist_free(nvl);
1862289497Smav			nvl = NULL;
1863219089Spjd			zcmd_free_nvlists(&zc);
1864289497Smav
1865219089Spjd			if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
1866219089Spjd				goto error;
1867219089Spjd			if (nvlist_add_uint64(nvl,
1868219089Spjd			    zfs_prop_to_name(ZFS_PROP_VOLSIZE),
1869219089Spjd			    old_volsize) != 0)
1870219089Spjd				goto error;
1871219089Spjd			if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0)
1872219089Spjd				goto error;
1873219089Spjd			(void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc);
1874168404Spjd		}
1875168404Spjd	} else {
1876289497Smav		for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) {
1877289497Smav			if (cls[cl_idx] != NULL) {
1878289497Smav				int clp_err = changelist_postfix(cls[cl_idx]);
1879289497Smav				if (clp_err != 0)
1880289497Smav					ret = clp_err;
1881289497Smav			}
1882289497Smav		}
1883185029Spjd
1884168404Spjd		/*
1885168404Spjd		 * Refresh the statistics so the new property value
1886168404Spjd		 * is reflected.
1887168404Spjd		 */
1888185029Spjd		if (ret == 0)
1889168404Spjd			(void) get_stats(zhp);
1890168404Spjd	}
1891168404Spjd
1892168404Spjderror:
1893168404Spjd	nvlist_free(nvl);
1894168404Spjd	zcmd_free_nvlists(&zc);
1895289497Smav	if (cls != NULL) {
1896289497Smav		for (cl_idx = 0; cl_idx < nvl_len; cl_idx++) {
1897289497Smav			if (cls[cl_idx] != NULL)
1898289497Smav				changelist_free(cls[cl_idx]);
1899289497Smav		}
1900289497Smav		free(cls);
1901289497Smav	}
1902168404Spjd	return (ret);
1903168404Spjd}
1904168404Spjd
1905168404Spjd/*
1906219089Spjd * Given a property, inherit the value from the parent dataset, or if received
1907219089Spjd * is TRUE, revert to the received value, if any.
1908168404Spjd */
1909168404Spjdint
1910219089Spjdzfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received)
1911168404Spjd{
1912168404Spjd	zfs_cmd_t zc = { 0 };
1913168404Spjd	int ret;
1914168404Spjd	prop_changelist_t *cl;
1915168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
1916168404Spjd	char errbuf[1024];
1917168404Spjd	zfs_prop_t prop;
1918168404Spjd
1919168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
1920168404Spjd	    "cannot inherit %s for '%s'"), propname, zhp->zfs_name);
1921168404Spjd
1922219089Spjd	zc.zc_cookie = received;
1923185029Spjd	if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) {
1924168404Spjd		/*
1925168404Spjd		 * For user properties, the amount of work we have to do is very
1926168404Spjd		 * small, so just do it here.
1927168404Spjd		 */
1928168404Spjd		if (!zfs_prop_user(propname)) {
1929168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1930168404Spjd			    "invalid property"));
1931168404Spjd			return (zfs_error(hdl, EZFS_BADPROP, errbuf));
1932168404Spjd		}
1933168404Spjd
1934168404Spjd		(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1935168404Spjd		(void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value));
1936168404Spjd
1937185029Spjd		if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc) != 0)
1938168404Spjd			return (zfs_standard_error(hdl, errno, errbuf));
1939168404Spjd
1940168404Spjd		return (0);
1941168404Spjd	}
1942168404Spjd
1943168404Spjd	/*
1944168404Spjd	 * Verify that this property is inheritable.
1945168404Spjd	 */
1946168404Spjd	if (zfs_prop_readonly(prop))
1947168404Spjd		return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf));
1948168404Spjd
1949219089Spjd	if (!zfs_prop_inheritable(prop) && !received)
1950168404Spjd		return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf));
1951168404Spjd
1952168404Spjd	/*
1953168404Spjd	 * Check to see if the value applies to this type
1954168404Spjd	 */
1955168404Spjd	if (!zfs_prop_valid_for_type(prop, zhp->zfs_type))
1956168404Spjd		return (zfs_error(hdl, EZFS_PROPTYPE, errbuf));
1957168404Spjd
1958168404Spjd	/*
1959219089Spjd	 * Normalize the name, to get rid of shorthand abbreviations.
1960168404Spjd	 */
1961168404Spjd	propname = zfs_prop_to_name(prop);
1962168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
1963168404Spjd	(void) strlcpy(zc.zc_value, propname, sizeof (zc.zc_value));
1964168404Spjd
1965168404Spjd	if (prop == ZFS_PROP_MOUNTPOINT && getzoneid() == GLOBAL_ZONEID &&
1966168404Spjd	    zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) {
1967168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1968168404Spjd		    "dataset is used in a non-global zone"));
1969168404Spjd		return (zfs_error(hdl, EZFS_ZONED, errbuf));
1970168404Spjd	}
1971168404Spjd
1972168404Spjd	/*
1973168404Spjd	 * Determine datasets which will be affected by this change, if any.
1974168404Spjd	 */
1975185029Spjd	if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL)
1976168404Spjd		return (-1);
1977168404Spjd
1978168404Spjd	if (prop == ZFS_PROP_MOUNTPOINT && changelist_haszonedchild(cl)) {
1979168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
1980168404Spjd		    "child dataset with inherited mountpoint is used "
1981168404Spjd		    "in a non-global zone"));
1982168404Spjd		ret = zfs_error(hdl, EZFS_ZONED, errbuf);
1983168404Spjd		goto error;
1984168404Spjd	}
1985168404Spjd
1986168404Spjd	if ((ret = changelist_prefix(cl)) != 0)
1987168404Spjd		goto error;
1988168404Spjd
1989185029Spjd	if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_INHERIT_PROP, &zc)) != 0) {
1990168404Spjd		return (zfs_standard_error(hdl, errno, errbuf));
1991168404Spjd	} else {
1992168404Spjd
1993168404Spjd		if ((ret = changelist_postfix(cl)) != 0)
1994168404Spjd			goto error;
1995168404Spjd
1996168404Spjd		/*
1997168404Spjd		 * Refresh the statistics so the new property is reflected.
1998168404Spjd		 */
1999168404Spjd		(void) get_stats(zhp);
2000168404Spjd	}
2001168404Spjd
2002168404Spjderror:
2003168404Spjd	changelist_free(cl);
2004168404Spjd	return (ret);
2005168404Spjd}
2006168404Spjd
2007168404Spjd/*
2008168404Spjd * True DSL properties are stored in an nvlist.  The following two functions
2009168404Spjd * extract them appropriately.
2010168404Spjd */
2011168404Spjdstatic uint64_t
2012168404Spjdgetprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source)
2013168404Spjd{
2014168404Spjd	nvlist_t *nv;
2015168404Spjd	uint64_t value;
2016168404Spjd
2017168404Spjd	*source = NULL;
2018168404Spjd	if (nvlist_lookup_nvlist(zhp->zfs_props,
2019168404Spjd	    zfs_prop_to_name(prop), &nv) == 0) {
2020185029Spjd		verify(nvlist_lookup_uint64(nv, ZPROP_VALUE, &value) == 0);
2021185029Spjd		(void) nvlist_lookup_string(nv, ZPROP_SOURCE, source);
2022168404Spjd	} else {
2023205198Sdelphij		verify(!zhp->zfs_props_table ||
2024205198Sdelphij		    zhp->zfs_props_table[prop] == B_TRUE);
2025168404Spjd		value = zfs_prop_default_numeric(prop);
2026168404Spjd		*source = "";
2027168404Spjd	}
2028168404Spjd
2029168404Spjd	return (value);
2030168404Spjd}
2031168404Spjd
2032289362Smavstatic const char *
2033168404Spjdgetprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source)
2034168404Spjd{
2035168404Spjd	nvlist_t *nv;
2036289362Smav	const char *value;
2037168404Spjd
2038168404Spjd	*source = NULL;
2039168404Spjd	if (nvlist_lookup_nvlist(zhp->zfs_props,
2040168404Spjd	    zfs_prop_to_name(prop), &nv) == 0) {
2041289362Smav		value = fnvlist_lookup_string(nv, ZPROP_VALUE);
2042185029Spjd		(void) nvlist_lookup_string(nv, ZPROP_SOURCE, source);
2043168404Spjd	} else {
2044205198Sdelphij		verify(!zhp->zfs_props_table ||
2045205198Sdelphij		    zhp->zfs_props_table[prop] == B_TRUE);
2046289362Smav		value = zfs_prop_default_string(prop);
2047168404Spjd		*source = "";
2048168404Spjd	}
2049168404Spjd
2050168404Spjd	return (value);
2051168404Spjd}
2052168404Spjd
2053219089Spjdstatic boolean_t
2054219089Spjdzfs_is_recvd_props_mode(zfs_handle_t *zhp)
2055219089Spjd{
2056219089Spjd	return (zhp->zfs_props == zhp->zfs_recvd_props);
2057219089Spjd}
2058219089Spjd
2059219089Spjdstatic void
2060219089Spjdzfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie)
2061219089Spjd{
2062219089Spjd	*cookie = (uint64_t)(uintptr_t)zhp->zfs_props;
2063219089Spjd	zhp->zfs_props = zhp->zfs_recvd_props;
2064219089Spjd}
2065219089Spjd
2066219089Spjdstatic void
2067219089Spjdzfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie)
2068219089Spjd{
2069219089Spjd	zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie;
2070219089Spjd	*cookie = 0;
2071219089Spjd}
2072219089Spjd
2073168404Spjd/*
2074168404Spjd * Internal function for getting a numeric property.  Both zfs_prop_get() and
2075168404Spjd * zfs_prop_get_int() are built using this interface.
2076168404Spjd *
2077168404Spjd * Certain properties can be overridden using 'mount -o'.  In this case, scan
2078168404Spjd * the contents of the /etc/mnttab entry, searching for the appropriate options.
2079168404Spjd * If they differ from the on-disk values, report the current values and mark
2080168404Spjd * the source "temporary".
2081168404Spjd */
2082168404Spjdstatic int
2083185029Spjdget_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src,
2084168404Spjd    char **source, uint64_t *val)
2085168404Spjd{
2086185029Spjd	zfs_cmd_t zc = { 0 };
2087185029Spjd	nvlist_t *zplprops = NULL;
2088168404Spjd	struct mnttab mnt;
2089168404Spjd	char *mntopt_on = NULL;
2090168404Spjd	char *mntopt_off = NULL;
2091219089Spjd	boolean_t received = zfs_is_recvd_props_mode(zhp);
2092168404Spjd
2093168404Spjd	*source = NULL;
2094168404Spjd
2095168404Spjd	switch (prop) {
2096168404Spjd	case ZFS_PROP_ATIME:
2097168404Spjd		mntopt_on = MNTOPT_ATIME;
2098168404Spjd		mntopt_off = MNTOPT_NOATIME;
2099168404Spjd		break;
2100168404Spjd
2101168404Spjd	case ZFS_PROP_DEVICES:
2102168404Spjd		mntopt_on = MNTOPT_DEVICES;
2103168404Spjd		mntopt_off = MNTOPT_NODEVICES;
2104168404Spjd		break;
2105168404Spjd
2106168404Spjd	case ZFS_PROP_EXEC:
2107168404Spjd		mntopt_on = MNTOPT_EXEC;
2108168404Spjd		mntopt_off = MNTOPT_NOEXEC;
2109168404Spjd		break;
2110168404Spjd
2111168404Spjd	case ZFS_PROP_READONLY:
2112168404Spjd		mntopt_on = MNTOPT_RO;
2113168404Spjd		mntopt_off = MNTOPT_RW;
2114168404Spjd		break;
2115168404Spjd
2116168404Spjd	case ZFS_PROP_SETUID:
2117168404Spjd		mntopt_on = MNTOPT_SETUID;
2118168404Spjd		mntopt_off = MNTOPT_NOSETUID;
2119168404Spjd		break;
2120168404Spjd
2121168404Spjd	case ZFS_PROP_XATTR:
2122168404Spjd		mntopt_on = MNTOPT_XATTR;
2123168404Spjd		mntopt_off = MNTOPT_NOXATTR;
2124168404Spjd		break;
2125185029Spjd
2126185029Spjd	case ZFS_PROP_NBMAND:
2127185029Spjd		mntopt_on = MNTOPT_NBMAND;
2128185029Spjd		mntopt_off = MNTOPT_NONBMAND;
2129185029Spjd		break;
2130307050Smav
2131307050Smav	default:
2132307050Smav		break;
2133168404Spjd	}
2134168404Spjd
2135168404Spjd	/*
2136168404Spjd	 * Because looking up the mount options is potentially expensive
2137168404Spjd	 * (iterating over all of /etc/mnttab), we defer its calculation until
2138168404Spjd	 * we're looking up a property which requires its presence.
2139168404Spjd	 */
2140168404Spjd	if (!zhp->zfs_mntcheck &&
2141168404Spjd	    (mntopt_on != NULL || prop == ZFS_PROP_MOUNTED)) {
2142209962Smm		libzfs_handle_t *hdl = zhp->zfs_hdl;
2143209962Smm		struct mnttab entry;
2144168404Spjd
2145209962Smm		if (libzfs_mnttab_find(hdl, zhp->zfs_name, &entry) == 0) {
2146209962Smm			zhp->zfs_mntopts = zfs_strdup(hdl,
2147168404Spjd			    entry.mnt_mntopts);
2148168404Spjd			if (zhp->zfs_mntopts == NULL)
2149168404Spjd				return (-1);
2150168404Spjd		}
2151168404Spjd
2152168404Spjd		zhp->zfs_mntcheck = B_TRUE;
2153168404Spjd	}
2154168404Spjd
2155168404Spjd	if (zhp->zfs_mntopts == NULL)
2156168404Spjd		mnt.mnt_mntopts = "";
2157168404Spjd	else
2158168404Spjd		mnt.mnt_mntopts = zhp->zfs_mntopts;
2159168404Spjd
2160168404Spjd	switch (prop) {
2161168404Spjd	case ZFS_PROP_ATIME:
2162168404Spjd	case ZFS_PROP_DEVICES:
2163168404Spjd	case ZFS_PROP_EXEC:
2164168404Spjd	case ZFS_PROP_READONLY:
2165168404Spjd	case ZFS_PROP_SETUID:
2166168404Spjd	case ZFS_PROP_XATTR:
2167185029Spjd	case ZFS_PROP_NBMAND:
2168168404Spjd		*val = getprop_uint64(zhp, prop, source);
2169168404Spjd
2170219089Spjd		if (received)
2171219089Spjd			break;
2172219089Spjd
2173168404Spjd		if (hasmntopt(&mnt, mntopt_on) && !*val) {
2174168404Spjd			*val = B_TRUE;
2175168404Spjd			if (src)
2176185029Spjd				*src = ZPROP_SRC_TEMPORARY;
2177168404Spjd		} else if (hasmntopt(&mnt, mntopt_off) && *val) {
2178168404Spjd			*val = B_FALSE;
2179168404Spjd			if (src)
2180185029Spjd				*src = ZPROP_SRC_TEMPORARY;
2181168404Spjd		}
2182168404Spjd		break;
2183168404Spjd
2184168404Spjd	case ZFS_PROP_CANMOUNT:
2185219089Spjd	case ZFS_PROP_VOLSIZE:
2186168404Spjd	case ZFS_PROP_QUOTA:
2187185029Spjd	case ZFS_PROP_REFQUOTA:
2188168404Spjd	case ZFS_PROP_RESERVATION:
2189185029Spjd	case ZFS_PROP_REFRESERVATION:
2190264835Sdelphij	case ZFS_PROP_FILESYSTEM_LIMIT:
2191264835Sdelphij	case ZFS_PROP_SNAPSHOT_LIMIT:
2192264835Sdelphij	case ZFS_PROP_FILESYSTEM_COUNT:
2193264835Sdelphij	case ZFS_PROP_SNAPSHOT_COUNT:
2194168404Spjd		*val = getprop_uint64(zhp, prop, source);
2195219089Spjd
2196219089Spjd		if (*source == NULL) {
2197219089Spjd			/* not default, must be local */
2198168404Spjd			*source = zhp->zfs_name;
2199219089Spjd		}
2200168404Spjd		break;
2201168404Spjd
2202168404Spjd	case ZFS_PROP_MOUNTED:
2203168404Spjd		*val = (zhp->zfs_mntopts != NULL);
2204168404Spjd		break;
2205168404Spjd
2206168404Spjd	case ZFS_PROP_NUMCLONES:
2207168404Spjd		*val = zhp->zfs_dmustats.dds_num_clones;
2208168404Spjd		break;
2209168404Spjd
2210185029Spjd	case ZFS_PROP_VERSION:
2211185029Spjd	case ZFS_PROP_NORMALIZE:
2212185029Spjd	case ZFS_PROP_UTF8ONLY:
2213185029Spjd	case ZFS_PROP_CASE:
2214185029Spjd		if (!zfs_prop_valid_for_type(prop, zhp->zfs_head_type) ||
2215185029Spjd		    zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0)
2216185029Spjd			return (-1);
2217185029Spjd		(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
2218185029Spjd		if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) {
2219185029Spjd			zcmd_free_nvlists(&zc);
2220219089Spjd			return (-1);
2221185029Spjd		}
2222185029Spjd		if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 ||
2223185029Spjd		    nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop),
2224185029Spjd		    val) != 0) {
2225185029Spjd			zcmd_free_nvlists(&zc);
2226219089Spjd			return (-1);
2227185029Spjd		}
2228296528Smav		nvlist_free(zplprops);
2229185029Spjd		zcmd_free_nvlists(&zc);
2230185029Spjd		break;
2231185029Spjd
2232253819Sdelphij	case ZFS_PROP_INCONSISTENT:
2233253819Sdelphij		*val = zhp->zfs_dmustats.dds_inconsistent;
2234253819Sdelphij		break;
2235253819Sdelphij
2236168404Spjd	default:
2237185029Spjd		switch (zfs_prop_get_type(prop)) {
2238185029Spjd		case PROP_TYPE_NUMBER:
2239185029Spjd		case PROP_TYPE_INDEX:
2240185029Spjd			*val = getprop_uint64(zhp, prop, source);
2241185029Spjd			/*
2242209962Smm			 * If we tried to use a default value for a
2243185029Spjd			 * readonly property, it means that it was not
2244331391Smav			 * present.  Note this only applies to "truly"
2245331391Smav			 * readonly properties, not set-once properties
2246331391Smav			 * like volblocksize.
2247185029Spjd			 */
2248185029Spjd			if (zfs_prop_readonly(prop) &&
2249331391Smav			    !zfs_prop_setonce(prop) &&
2250219089Spjd			    *source != NULL && (*source)[0] == '\0') {
2251219089Spjd				*source = NULL;
2252325139Savg				return (-1);
2253185029Spjd			}
2254185029Spjd			break;
2255185029Spjd
2256185029Spjd		case PROP_TYPE_STRING:
2257185029Spjd		default:
2258185029Spjd			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
2259185029Spjd			    "cannot get non-numeric property"));
2260185029Spjd			return (zfs_error(zhp->zfs_hdl, EZFS_BADPROP,
2261185029Spjd			    dgettext(TEXT_DOMAIN, "internal error")));
2262185029Spjd		}
2263168404Spjd	}
2264168404Spjd
2265168404Spjd	return (0);
2266168404Spjd}
2267168404Spjd
2268168404Spjd/*
2269168404Spjd * Calculate the source type, given the raw source string.
2270168404Spjd */
2271168404Spjdstatic void
2272185029Spjdget_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source,
2273168404Spjd    char *statbuf, size_t statlen)
2274168404Spjd{
2275185029Spjd	if (statbuf == NULL || *srctype == ZPROP_SRC_TEMPORARY)
2276168404Spjd		return;
2277168404Spjd
2278168404Spjd	if (source == NULL) {
2279185029Spjd		*srctype = ZPROP_SRC_NONE;
2280168404Spjd	} else if (source[0] == '\0') {
2281185029Spjd		*srctype = ZPROP_SRC_DEFAULT;
2282219089Spjd	} else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) {
2283219089Spjd		*srctype = ZPROP_SRC_RECEIVED;
2284168404Spjd	} else {
2285168404Spjd		if (strcmp(source, zhp->zfs_name) == 0) {
2286185029Spjd			*srctype = ZPROP_SRC_LOCAL;
2287168404Spjd		} else {
2288168404Spjd			(void) strlcpy(statbuf, source, statlen);
2289185029Spjd			*srctype = ZPROP_SRC_INHERITED;
2290168404Spjd		}
2291168404Spjd	}
2292168404Spjd
2293168404Spjd}
2294168404Spjd
2295219089Spjdint
2296219089Spjdzfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf,
2297219089Spjd    size_t proplen, boolean_t literal)
2298219089Spjd{
2299219089Spjd	zfs_prop_t prop;
2300219089Spjd	int err = 0;
2301219089Spjd
2302219089Spjd	if (zhp->zfs_recvd_props == NULL)
2303219089Spjd		if (get_recvd_props_ioctl(zhp) != 0)
2304219089Spjd			return (-1);
2305219089Spjd
2306219089Spjd	prop = zfs_name_to_prop(propname);
2307219089Spjd
2308219089Spjd	if (prop != ZPROP_INVAL) {
2309219089Spjd		uint64_t cookie;
2310219089Spjd		if (!nvlist_exists(zhp->zfs_recvd_props, propname))
2311219089Spjd			return (-1);
2312219089Spjd		zfs_set_recvd_props_mode(zhp, &cookie);
2313219089Spjd		err = zfs_prop_get(zhp, prop, propbuf, proplen,
2314219089Spjd		    NULL, NULL, 0, literal);
2315219089Spjd		zfs_unset_recvd_props_mode(zhp, &cookie);
2316219089Spjd	} else {
2317219089Spjd		nvlist_t *propval;
2318219089Spjd		char *recvdval;
2319219089Spjd		if (nvlist_lookup_nvlist(zhp->zfs_recvd_props,
2320219089Spjd		    propname, &propval) != 0)
2321219089Spjd			return (-1);
2322219089Spjd		verify(nvlist_lookup_string(propval, ZPROP_VALUE,
2323219089Spjd		    &recvdval) == 0);
2324219089Spjd		(void) strlcpy(propbuf, recvdval, proplen);
2325219089Spjd	}
2326219089Spjd
2327219089Spjd	return (err == 0 ? 0 : -1);
2328219089Spjd}
2329219089Spjd
2330228103Smmstatic int
2331228103Smmget_clones_string(zfs_handle_t *zhp, char *propbuf, size_t proplen)
2332228103Smm{
2333228103Smm	nvlist_t *value;
2334228103Smm	nvpair_t *pair;
2335228103Smm
2336228103Smm	value = zfs_get_clones_nvl(zhp);
2337228103Smm	if (value == NULL)
2338228103Smm		return (-1);
2339228103Smm
2340228103Smm	propbuf[0] = '\0';
2341228103Smm	for (pair = nvlist_next_nvpair(value, NULL); pair != NULL;
2342228103Smm	    pair = nvlist_next_nvpair(value, pair)) {
2343228103Smm		if (propbuf[0] != '\0')
2344228103Smm			(void) strlcat(propbuf, ",", proplen);
2345228103Smm		(void) strlcat(propbuf, nvpair_name(pair), proplen);
2346228103Smm	}
2347228103Smm
2348228103Smm	return (0);
2349228103Smm}
2350228103Smm
2351228103Smmstruct get_clones_arg {
2352228103Smm	uint64_t numclones;
2353228103Smm	nvlist_t *value;
2354228103Smm	const char *origin;
2355307108Smav	char buf[ZFS_MAX_DATASET_NAME_LEN];
2356228103Smm};
2357228103Smm
2358228103Smmint
2359228103Smmget_clones_cb(zfs_handle_t *zhp, void *arg)
2360228103Smm{
2361228103Smm	struct get_clones_arg *gca = arg;
2362228103Smm
2363228103Smm	if (gca->numclones == 0) {
2364228103Smm		zfs_close(zhp);
2365228103Smm		return (0);
2366228103Smm	}
2367228103Smm
2368228103Smm	if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, gca->buf, sizeof (gca->buf),
2369228103Smm	    NULL, NULL, 0, B_TRUE) != 0)
2370228103Smm		goto out;
2371228103Smm	if (strcmp(gca->buf, gca->origin) == 0) {
2372248571Smm		fnvlist_add_boolean(gca->value, zfs_get_name(zhp));
2373228103Smm		gca->numclones--;
2374228103Smm	}
2375228103Smm
2376228103Smmout:
2377228103Smm	(void) zfs_iter_children(zhp, get_clones_cb, gca);
2378228103Smm	zfs_close(zhp);
2379228103Smm	return (0);
2380228103Smm}
2381228103Smm
2382228103Smmnvlist_t *
2383228103Smmzfs_get_clones_nvl(zfs_handle_t *zhp)
2384228103Smm{
2385228103Smm	nvlist_t *nv, *value;
2386228103Smm
2387228103Smm	if (nvlist_lookup_nvlist(zhp->zfs_props,
2388228103Smm	    zfs_prop_to_name(ZFS_PROP_CLONES), &nv) != 0) {
2389228103Smm		struct get_clones_arg gca;
2390228103Smm
2391228103Smm		/*
2392228103Smm		 * if this is a snapshot, then the kernel wasn't able
2393228103Smm		 * to get the clones.  Do it by slowly iterating.
2394228103Smm		 */
2395228103Smm		if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT)
2396228103Smm			return (NULL);
2397228103Smm		if (nvlist_alloc(&nv, NV_UNIQUE_NAME, 0) != 0)
2398228103Smm			return (NULL);
2399228103Smm		if (nvlist_alloc(&value, NV_UNIQUE_NAME, 0) != 0) {
2400228103Smm			nvlist_free(nv);
2401228103Smm			return (NULL);
2402228103Smm		}
2403228103Smm
2404228103Smm		gca.numclones = zfs_prop_get_int(zhp, ZFS_PROP_NUMCLONES);
2405228103Smm		gca.value = value;
2406228103Smm		gca.origin = zhp->zfs_name;
2407228103Smm
2408228103Smm		if (gca.numclones != 0) {
2409228103Smm			zfs_handle_t *root;
2410307108Smav			char pool[ZFS_MAX_DATASET_NAME_LEN];
2411228103Smm			char *cp = pool;
2412228103Smm
2413228103Smm			/* get the pool name */
2414228103Smm			(void) strlcpy(pool, zhp->zfs_name, sizeof (pool));
2415228103Smm			(void) strsep(&cp, "/@");
2416228103Smm			root = zfs_open(zhp->zfs_hdl, pool,
2417228103Smm			    ZFS_TYPE_FILESYSTEM);
2418228103Smm
2419228103Smm			(void) get_clones_cb(root, &gca);
2420228103Smm		}
2421228103Smm
2422228103Smm		if (gca.numclones != 0 ||
2423228103Smm		    nvlist_add_nvlist(nv, ZPROP_VALUE, value) != 0 ||
2424228103Smm		    nvlist_add_nvlist(zhp->zfs_props,
2425228103Smm		    zfs_prop_to_name(ZFS_PROP_CLONES), nv) != 0) {
2426228103Smm			nvlist_free(nv);
2427228103Smm			nvlist_free(value);
2428228103Smm			return (NULL);
2429228103Smm		}
2430228103Smm		nvlist_free(nv);
2431228103Smm		nvlist_free(value);
2432228103Smm		verify(0 == nvlist_lookup_nvlist(zhp->zfs_props,
2433228103Smm		    zfs_prop_to_name(ZFS_PROP_CLONES), &nv));
2434228103Smm	}
2435228103Smm
2436228103Smm	verify(nvlist_lookup_nvlist(nv, ZPROP_VALUE, &value) == 0);
2437228103Smm
2438228103Smm	return (value);
2439228103Smm}
2440228103Smm
2441168404Spjd/*
2442325534Savg * Accepts a property and value and checks that the value
2443325534Savg * matches the one found by the channel program. If they are
2444325534Savg * not equal, print both of them.
2445325534Savg */
2446325534Savgvoid
2447325534Savgzcp_check(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t intval,
2448325534Savg    const char *strval)
2449325534Savg{
2450325534Savg	if (!zhp->zfs_hdl->libzfs_prop_debug)
2451325534Savg		return;
2452325534Savg	int error;
2453325534Savg	char *poolname = zhp->zpool_hdl->zpool_name;
2454325534Savg	const char *program =
2455325534Savg	    "args = ...\n"
2456325534Savg	    "ds = args['dataset']\n"
2457325534Savg	    "prop = args['property']\n"
2458325534Savg	    "value, setpoint = zfs.get_prop(ds, prop)\n"
2459325534Savg	    "return {value=value, setpoint=setpoint}\n";
2460325534Savg	nvlist_t *outnvl;
2461325534Savg	nvlist_t *retnvl;
2462325534Savg	nvlist_t *argnvl = fnvlist_alloc();
2463325534Savg
2464325534Savg	fnvlist_add_string(argnvl, "dataset", zhp->zfs_name);
2465325534Savg	fnvlist_add_string(argnvl, "property", zfs_prop_to_name(prop));
2466325534Savg
2467329484Smav	error = lzc_channel_program_nosync(poolname, program,
2468325534Savg	    10 * 1000 * 1000, 10 * 1024 * 1024, argnvl, &outnvl);
2469325534Savg
2470325534Savg	if (error == 0) {
2471325534Savg		retnvl = fnvlist_lookup_nvlist(outnvl, "return");
2472325534Savg		if (zfs_prop_get_type(prop) == PROP_TYPE_NUMBER) {
2473325534Savg			int64_t ans;
2474325534Savg			error = nvlist_lookup_int64(retnvl, "value", &ans);
2475325534Savg			if (error != 0) {
2476325534Savg				(void) fprintf(stderr, "zcp check error: %u\n",
2477325534Savg				    error);
2478325534Savg				return;
2479325534Savg			}
2480325534Savg			if (ans != intval) {
2481325534Savg				(void) fprintf(stderr,
2482325534Savg				    "%s: zfs found %lld, but zcp found %lld\n",
2483325534Savg				    zfs_prop_to_name(prop),
2484325534Savg				    (longlong_t)intval, (longlong_t)ans);
2485325534Savg			}
2486325534Savg		} else {
2487325534Savg			char *str_ans;
2488325534Savg			error = nvlist_lookup_string(retnvl, "value", &str_ans);
2489325534Savg			if (error != 0) {
2490325534Savg				(void) fprintf(stderr, "zcp check error: %u\n",
2491325534Savg				    error);
2492325534Savg				return;
2493325534Savg			}
2494325534Savg			if (strcmp(strval, str_ans) != 0) {
2495325534Savg				(void) fprintf(stderr,
2496325534Savg				    "%s: zfs found %s, but zcp found %s\n",
2497325534Savg				    zfs_prop_to_name(prop),
2498325534Savg				    strval, str_ans);
2499325534Savg			}
2500325534Savg		}
2501325534Savg	} else {
2502325534Savg		(void) fprintf(stderr,
2503325534Savg		    "zcp check failed, channel program error: %u\n", error);
2504325534Savg	}
2505325534Savg	nvlist_free(argnvl);
2506325534Savg	nvlist_free(outnvl);
2507325534Savg}
2508325534Savg
2509325534Savg/*
2510168404Spjd * Retrieve a property from the given object.  If 'literal' is specified, then
2511168404Spjd * numbers are left as exact values.  Otherwise, numbers are converted to a
2512168404Spjd * human-readable form.
2513168404Spjd *
2514168404Spjd * Returns 0 on success, or -1 on error.
2515168404Spjd */
2516168404Spjdint
2517168404Spjdzfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen,
2518185029Spjd    zprop_source_t *src, char *statbuf, size_t statlen, boolean_t literal)
2519168404Spjd{
2520168404Spjd	char *source = NULL;
2521168404Spjd	uint64_t val;
2522289362Smav	const char *str;
2523168404Spjd	const char *strval;
2524219089Spjd	boolean_t received = zfs_is_recvd_props_mode(zhp);
2525168404Spjd
2526168404Spjd	/*
2527168404Spjd	 * Check to see if this property applies to our object
2528168404Spjd	 */
2529168404Spjd	if (!zfs_prop_valid_for_type(prop, zhp->zfs_type))
2530168404Spjd		return (-1);
2531168404Spjd
2532219089Spjd	if (received && zfs_prop_readonly(prop))
2533219089Spjd		return (-1);
2534219089Spjd
2535168404Spjd	if (src)
2536185029Spjd		*src = ZPROP_SRC_NONE;
2537168404Spjd
2538168404Spjd	switch (prop) {
2539168404Spjd	case ZFS_PROP_CREATION:
2540168404Spjd		/*
2541168404Spjd		 * 'creation' is a time_t stored in the statistics.  We convert
2542168404Spjd		 * this into a string unless 'literal' is specified.
2543168404Spjd		 */
2544168404Spjd		{
2545168404Spjd			val = getprop_uint64(zhp, prop, &source);
2546168404Spjd			time_t time = (time_t)val;
2547168404Spjd			struct tm t;
2548168404Spjd
2549168404Spjd			if (literal ||
2550168404Spjd			    localtime_r(&time, &t) == NULL ||
2551168404Spjd			    strftime(propbuf, proplen, "%a %b %e %k:%M %Y",
2552168404Spjd			    &t) == 0)
2553168404Spjd				(void) snprintf(propbuf, proplen, "%llu", val);
2554168404Spjd		}
2555325534Savg		zcp_check(zhp, prop, val, NULL);
2556168404Spjd		break;
2557168404Spjd
2558168404Spjd	case ZFS_PROP_MOUNTPOINT:
2559168404Spjd		/*
2560168404Spjd		 * Getting the precise mountpoint can be tricky.
2561168404Spjd		 *
2562168404Spjd		 *  - for 'none' or 'legacy', return those values.
2563168404Spjd		 *  - for inherited mountpoints, we want to take everything
2564168404Spjd		 *    after our ancestor and append it to the inherited value.
2565168404Spjd		 *
2566168404Spjd		 * If the pool has an alternate root, we want to prepend that
2567168404Spjd		 * root to any values we return.
2568168404Spjd		 */
2569185029Spjd
2570168404Spjd		str = getprop_string(zhp, prop, &source);
2571168404Spjd
2572185029Spjd		if (str[0] == '/') {
2573185029Spjd			char buf[MAXPATHLEN];
2574185029Spjd			char *root = buf;
2575219089Spjd			const char *relpath;
2576168404Spjd
2577219089Spjd			/*
2578219089Spjd			 * If we inherit the mountpoint, even from a dataset
2579219089Spjd			 * with a received value, the source will be the path of
2580219089Spjd			 * the dataset we inherit from. If source is
2581219089Spjd			 * ZPROP_SOURCE_VAL_RECVD, the received value is not
2582219089Spjd			 * inherited.
2583219089Spjd			 */
2584219089Spjd			if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) {
2585219089Spjd				relpath = "";
2586219089Spjd			} else {
2587219089Spjd				relpath = zhp->zfs_name + strlen(source);
2588219089Spjd				if (relpath[0] == '/')
2589219089Spjd					relpath++;
2590219089Spjd			}
2591185029Spjd
2592185029Spjd			if ((zpool_get_prop(zhp->zpool_hdl,
2593263889Sdelphij			    ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL,
2594263889Sdelphij			    B_FALSE)) || (strcmp(root, "-") == 0))
2595185029Spjd				root[0] = '\0';
2596185029Spjd			/*
2597185029Spjd			 * Special case an alternate root of '/'. This will
2598185029Spjd			 * avoid having multiple leading slashes in the
2599185029Spjd			 * mountpoint path.
2600185029Spjd			 */
2601185029Spjd			if (strcmp(root, "/") == 0)
2602185029Spjd				root++;
2603185029Spjd
2604185029Spjd			/*
2605185029Spjd			 * If the mountpoint is '/' then skip over this
2606185029Spjd			 * if we are obtaining either an alternate root or
2607185029Spjd			 * an inherited mountpoint.
2608185029Spjd			 */
2609185029Spjd			if (str[1] == '\0' && (root[0] != '\0' ||
2610185029Spjd			    relpath[0] != '\0'))
2611168404Spjd				str++;
2612168404Spjd
2613168404Spjd			if (relpath[0] == '\0')
2614168404Spjd				(void) snprintf(propbuf, proplen, "%s%s",
2615168404Spjd				    root, str);
2616168404Spjd			else
2617168404Spjd				(void) snprintf(propbuf, proplen, "%s%s%s%s",
2618168404Spjd				    root, str, relpath[0] == '@' ? "" : "/",
2619168404Spjd				    relpath);
2620168404Spjd		} else {
2621168404Spjd			/* 'legacy' or 'none' */
2622168404Spjd			(void) strlcpy(propbuf, str, proplen);
2623168404Spjd		}
2624325534Savg		zcp_check(zhp, prop, NULL, propbuf);
2625168404Spjd		break;
2626168404Spjd
2627168404Spjd	case ZFS_PROP_ORIGIN:
2628289362Smav		str = getprop_string(zhp, prop, &source);
2629289362Smav		if (str == NULL)
2630168404Spjd			return (-1);
2631289362Smav		(void) strlcpy(propbuf, str, proplen);
2632325534Savg		zcp_check(zhp, prop, NULL, str);
2633168404Spjd		break;
2634168404Spjd
2635228103Smm	case ZFS_PROP_CLONES:
2636228103Smm		if (get_clones_string(zhp, propbuf, proplen) != 0)
2637228103Smm			return (-1);
2638228103Smm		break;
2639228103Smm
2640168404Spjd	case ZFS_PROP_QUOTA:
2641185029Spjd	case ZFS_PROP_REFQUOTA:
2642168404Spjd	case ZFS_PROP_RESERVATION:
2643185029Spjd	case ZFS_PROP_REFRESERVATION:
2644185029Spjd
2645168404Spjd		if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
2646168404Spjd			return (-1);
2647168404Spjd		/*
2648168404Spjd		 * If quota or reservation is 0, we translate this into 'none'
2649168404Spjd		 * (unless literal is set), and indicate that it's the default
2650168404Spjd		 * value.  Otherwise, we print the number nicely and indicate
2651168404Spjd		 * that its set locally.
2652168404Spjd		 */
2653168404Spjd		if (val == 0) {
2654168404Spjd			if (literal)
2655168404Spjd				(void) strlcpy(propbuf, "0", proplen);
2656168404Spjd			else
2657168404Spjd				(void) strlcpy(propbuf, "none", proplen);
2658168404Spjd		} else {
2659168404Spjd			if (literal)
2660168404Spjd				(void) snprintf(propbuf, proplen, "%llu",
2661168404Spjd				    (u_longlong_t)val);
2662168404Spjd			else
2663168404Spjd				zfs_nicenum(val, propbuf, proplen);
2664168404Spjd		}
2665325534Savg		zcp_check(zhp, prop, val, NULL);
2666168404Spjd		break;
2667168404Spjd
2668264835Sdelphij	case ZFS_PROP_FILESYSTEM_LIMIT:
2669264835Sdelphij	case ZFS_PROP_SNAPSHOT_LIMIT:
2670264835Sdelphij	case ZFS_PROP_FILESYSTEM_COUNT:
2671264835Sdelphij	case ZFS_PROP_SNAPSHOT_COUNT:
2672264835Sdelphij
2673264835Sdelphij		if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
2674264835Sdelphij			return (-1);
2675264835Sdelphij
2676264835Sdelphij		/*
2677264835Sdelphij		 * If limit is UINT64_MAX, we translate this into 'none' (unless
2678264835Sdelphij		 * literal is set), and indicate that it's the default value.
2679264835Sdelphij		 * Otherwise, we print the number nicely and indicate that it's
2680264835Sdelphij		 * set locally.
2681264835Sdelphij		 */
2682264835Sdelphij		if (literal) {
2683264835Sdelphij			(void) snprintf(propbuf, proplen, "%llu",
2684264835Sdelphij			    (u_longlong_t)val);
2685264835Sdelphij		} else if (val == UINT64_MAX) {
2686264835Sdelphij			(void) strlcpy(propbuf, "none", proplen);
2687264835Sdelphij		} else {
2688264835Sdelphij			zfs_nicenum(val, propbuf, proplen);
2689264835Sdelphij		}
2690325534Savg
2691325534Savg		zcp_check(zhp, prop, val, NULL);
2692264835Sdelphij		break;
2693264835Sdelphij
2694223623Smm	case ZFS_PROP_REFRATIO:
2695168404Spjd	case ZFS_PROP_COMPRESSRATIO:
2696168404Spjd		if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
2697168404Spjd			return (-1);
2698219089Spjd		(void) snprintf(propbuf, proplen, "%llu.%02llux",
2699219089Spjd		    (u_longlong_t)(val / 100),
2700219089Spjd		    (u_longlong_t)(val % 100));
2701325534Savg		zcp_check(zhp, prop, val, NULL);
2702168404Spjd		break;
2703168404Spjd
2704168404Spjd	case ZFS_PROP_TYPE:
2705168404Spjd		switch (zhp->zfs_type) {
2706168404Spjd		case ZFS_TYPE_FILESYSTEM:
2707168404Spjd			str = "filesystem";
2708168404Spjd			break;
2709168404Spjd		case ZFS_TYPE_VOLUME:
2710168404Spjd			str = "volume";
2711168404Spjd			break;
2712168404Spjd		case ZFS_TYPE_SNAPSHOT:
2713168404Spjd			str = "snapshot";
2714168404Spjd			break;
2715260183Sdelphij		case ZFS_TYPE_BOOKMARK:
2716260183Sdelphij			str = "bookmark";
2717260183Sdelphij			break;
2718168404Spjd		default:
2719168404Spjd			abort();
2720168404Spjd		}
2721168404Spjd		(void) snprintf(propbuf, proplen, "%s", str);
2722325534Savg		zcp_check(zhp, prop, NULL, propbuf);
2723168404Spjd		break;
2724168404Spjd
2725168404Spjd	case ZFS_PROP_MOUNTED:
2726168404Spjd		/*
2727168404Spjd		 * The 'mounted' property is a pseudo-property that described
2728168404Spjd		 * whether the filesystem is currently mounted.  Even though
2729168404Spjd		 * it's a boolean value, the typical values of "on" and "off"
2730168404Spjd		 * don't make sense, so we translate to "yes" and "no".
2731168404Spjd		 */
2732168404Spjd		if (get_numeric_property(zhp, ZFS_PROP_MOUNTED,
2733168404Spjd		    src, &source, &val) != 0)
2734168404Spjd			return (-1);
2735168404Spjd		if (val)
2736168404Spjd			(void) strlcpy(propbuf, "yes", proplen);
2737168404Spjd		else
2738168404Spjd			(void) strlcpy(propbuf, "no", proplen);
2739168404Spjd		break;
2740168404Spjd
2741168404Spjd	case ZFS_PROP_NAME:
2742168404Spjd		/*
2743168404Spjd		 * The 'name' property is a pseudo-property derived from the
2744168404Spjd		 * dataset name.  It is presented as a real property to simplify
2745168404Spjd		 * consumers.
2746168404Spjd		 */
2747168404Spjd		(void) strlcpy(propbuf, zhp->zfs_name, proplen);
2748325534Savg		zcp_check(zhp, prop, NULL, propbuf);
2749168404Spjd		break;
2750168404Spjd
2751219089Spjd	case ZFS_PROP_MLSLABEL:
2752219089Spjd		{
2753277300Ssmh#ifdef illumos
2754219089Spjd			m_label_t *new_sl = NULL;
2755219089Spjd			char *ascii = NULL;	/* human readable label */
2756219089Spjd
2757219089Spjd			(void) strlcpy(propbuf,
2758219089Spjd			    getprop_string(zhp, prop, &source), proplen);
2759219089Spjd
2760219089Spjd			if (literal || (strcasecmp(propbuf,
2761219089Spjd			    ZFS_MLSLABEL_DEFAULT) == 0))
2762219089Spjd				break;
2763219089Spjd
2764219089Spjd			/*
2765219089Spjd			 * Try to translate the internal hex string to
2766219089Spjd			 * human-readable output.  If there are any
2767219089Spjd			 * problems just use the hex string.
2768219089Spjd			 */
2769219089Spjd
2770219089Spjd			if (str_to_label(propbuf, &new_sl, MAC_LABEL,
2771219089Spjd			    L_NO_CORRECTION, NULL) == -1) {
2772219089Spjd				m_label_free(new_sl);
2773219089Spjd				break;
2774219089Spjd			}
2775219089Spjd
2776219089Spjd			if (label_to_str(new_sl, &ascii, M_LABEL,
2777219089Spjd			    DEF_NAMES) != 0) {
2778219089Spjd				if (ascii)
2779219089Spjd					free(ascii);
2780219089Spjd				m_label_free(new_sl);
2781219089Spjd				break;
2782219089Spjd			}
2783219089Spjd			m_label_free(new_sl);
2784219089Spjd
2785219089Spjd			(void) strlcpy(propbuf, ascii, proplen);
2786219089Spjd			free(ascii);
2787277300Ssmh#else	/* !illumos */
2788219089Spjd			propbuf[0] = '\0';
2789277300Ssmh#endif	/* illumos */
2790219089Spjd		}
2791219089Spjd		break;
2792219089Spjd
2793236705Smm	case ZFS_PROP_GUID:
2794339142Smav	case ZFS_PROP_CREATETXG:
2795236705Smm		/*
2796236705Smm		 * GUIDs are stored as numbers, but they are identifiers.
2797236705Smm		 * We don't want them to be pretty printed, because pretty
2798236705Smm		 * printing mangles the ID into a truncated and useless value.
2799236705Smm		 */
2800236705Smm		if (get_numeric_property(zhp, prop, src, &source, &val) != 0)
2801236705Smm			return (-1);
2802236705Smm		(void) snprintf(propbuf, proplen, "%llu", (u_longlong_t)val);
2803325534Savg		zcp_check(zhp, prop, val, NULL);
2804236705Smm		break;
2805236705Smm
2806168404Spjd	default:
2807185029Spjd		switch (zfs_prop_get_type(prop)) {
2808185029Spjd		case PROP_TYPE_NUMBER:
2809185029Spjd			if (get_numeric_property(zhp, prop, src,
2810325534Savg			    &source, &val) != 0) {
2811185029Spjd				return (-1);
2812325534Savg			}
2813325534Savg
2814325534Savg			if (literal) {
2815185029Spjd				(void) snprintf(propbuf, proplen, "%llu",
2816185029Spjd				    (u_longlong_t)val);
2817325534Savg			} else {
2818185029Spjd				zfs_nicenum(val, propbuf, proplen);
2819325534Savg			}
2820325534Savg			zcp_check(zhp, prop, val, NULL);
2821185029Spjd			break;
2822185029Spjd
2823185029Spjd		case PROP_TYPE_STRING:
2824289362Smav			str = getprop_string(zhp, prop, &source);
2825289362Smav			if (str == NULL)
2826289362Smav				return (-1);
2827325534Savg
2828289362Smav			(void) strlcpy(propbuf, str, proplen);
2829325534Savg			zcp_check(zhp, prop, NULL, str);
2830185029Spjd			break;
2831185029Spjd
2832185029Spjd		case PROP_TYPE_INDEX:
2833185029Spjd			if (get_numeric_property(zhp, prop, src,
2834185029Spjd			    &source, &val) != 0)
2835185029Spjd				return (-1);
2836185029Spjd			if (zfs_prop_index_to_string(prop, val, &strval) != 0)
2837185029Spjd				return (-1);
2838325534Savg
2839185029Spjd			(void) strlcpy(propbuf, strval, proplen);
2840325534Savg			zcp_check(zhp, prop, NULL, strval);
2841185029Spjd			break;
2842185029Spjd
2843185029Spjd		default:
2844185029Spjd			abort();
2845185029Spjd		}
2846168404Spjd	}
2847168404Spjd
2848168404Spjd	get_source(zhp, src, source, statbuf, statlen);
2849168404Spjd
2850168404Spjd	return (0);
2851168404Spjd}
2852168404Spjd
2853168404Spjd/*
2854168404Spjd * Utility function to get the given numeric property.  Does no validation that
2855168404Spjd * the given property is the appropriate type; should only be used with
2856168404Spjd * hard-coded property types.
2857168404Spjd */
2858168404Spjduint64_t
2859168404Spjdzfs_prop_get_int(zfs_handle_t *zhp, zfs_prop_t prop)
2860168404Spjd{
2861168404Spjd	char *source;
2862168404Spjd	uint64_t val;
2863168404Spjd
2864185029Spjd	(void) get_numeric_property(zhp, prop, NULL, &source, &val);
2865168404Spjd
2866168404Spjd	return (val);
2867168404Spjd}
2868168404Spjd
2869185029Spjdint
2870185029Spjdzfs_prop_set_int(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t val)
2871185029Spjd{
2872185029Spjd	char buf[64];
2873185029Spjd
2874209962Smm	(void) snprintf(buf, sizeof (buf), "%llu", (longlong_t)val);
2875185029Spjd	return (zfs_prop_set(zhp, zfs_prop_to_name(prop), buf));
2876185029Spjd}
2877185029Spjd
2878168404Spjd/*
2879168404Spjd * Similar to zfs_prop_get(), but returns the value as an integer.
2880168404Spjd */
2881168404Spjdint
2882168404Spjdzfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value,
2883185029Spjd    zprop_source_t *src, char *statbuf, size_t statlen)
2884168404Spjd{
2885168404Spjd	char *source;
2886168404Spjd
2887168404Spjd	/*
2888168404Spjd	 * Check to see if this property applies to our object
2889168404Spjd	 */
2890185029Spjd	if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) {
2891168404Spjd		return (zfs_error_fmt(zhp->zfs_hdl, EZFS_PROPTYPE,
2892168404Spjd		    dgettext(TEXT_DOMAIN, "cannot get property '%s'"),
2893168404Spjd		    zfs_prop_to_name(prop)));
2894185029Spjd	}
2895168404Spjd
2896168404Spjd	if (src)
2897185029Spjd		*src = ZPROP_SRC_NONE;
2898168404Spjd
2899168404Spjd	if (get_numeric_property(zhp, prop, src, &source, value) != 0)
2900168404Spjd		return (-1);
2901168404Spjd
2902168404Spjd	get_source(zhp, src, source, statbuf, statlen);
2903168404Spjd
2904168404Spjd	return (0);
2905168404Spjd}
2906168404Spjd
2907209962Smmstatic int
2908209962Smmidmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser,
2909209962Smm    char **domainp, idmap_rid_t *ridp)
2910209962Smm{
2911277300Ssmh#ifdef illumos
2912209962Smm	idmap_get_handle_t *get_hdl = NULL;
2913209962Smm	idmap_stat status;
2914209962Smm	int err = EINVAL;
2915209962Smm
2916219089Spjd	if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS)
2917209962Smm		goto out;
2918209962Smm
2919209962Smm	if (isuser) {
2920209962Smm		err = idmap_get_sidbyuid(get_hdl, id,
2921209962Smm		    IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status);
2922209962Smm	} else {
2923209962Smm		err = idmap_get_sidbygid(get_hdl, id,
2924209962Smm		    IDMAP_REQ_FLG_USE_CACHE, domainp, ridp, &status);
2925209962Smm	}
2926209962Smm	if (err == IDMAP_SUCCESS &&
2927209962Smm	    idmap_get_mappings(get_hdl) == IDMAP_SUCCESS &&
2928209962Smm	    status == IDMAP_SUCCESS)
2929209962Smm		err = 0;
2930209962Smm	else
2931209962Smm		err = EINVAL;
2932209962Smmout:
2933209962Smm	if (get_hdl)
2934209962Smm		idmap_get_destroy(get_hdl);
2935209962Smm	return (err);
2936277300Ssmh#else	/* !illumos */
2937209962Smm	assert(!"invalid code path");
2938264852Ssmh	return (EINVAL); // silence compiler warning
2939277300Ssmh#endif	/* illumos */
2940209962Smm}
2941209962Smm
2942168404Spjd/*
2943209962Smm * convert the propname into parameters needed by kernel
2944209962Smm * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829
2945209962Smm * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789
2946209962Smm */
2947209962Smmstatic int
2948209962Smmuserquota_propname_decode(const char *propname, boolean_t zoned,
2949209962Smm    zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp)
2950209962Smm{
2951209962Smm	zfs_userquota_prop_t type;
2952209962Smm	char *cp, *end;
2953209962Smm	char *numericsid = NULL;
2954209962Smm	boolean_t isuser;
2955209962Smm
2956209962Smm	domain[0] = '\0';
2957275579Sdelphij	*ridp = 0;
2958209962Smm	/* Figure out the property type ({user|group}{quota|space}) */
2959209962Smm	for (type = 0; type < ZFS_NUM_USERQUOTA_PROPS; type++) {
2960209962Smm		if (strncmp(propname, zfs_userquota_prop_prefixes[type],
2961209962Smm		    strlen(zfs_userquota_prop_prefixes[type])) == 0)
2962209962Smm			break;
2963209962Smm	}
2964209962Smm	if (type == ZFS_NUM_USERQUOTA_PROPS)
2965209962Smm		return (EINVAL);
2966209962Smm	*typep = type;
2967209962Smm
2968209962Smm	isuser = (type == ZFS_PROP_USERQUOTA ||
2969209962Smm	    type == ZFS_PROP_USERUSED);
2970209962Smm
2971209962Smm	cp = strchr(propname, '@') + 1;
2972209962Smm
2973209962Smm	if (strchr(cp, '@')) {
2974277300Ssmh#ifdef illumos
2975209962Smm		/*
2976209962Smm		 * It's a SID name (eg "user@domain") that needs to be
2977209962Smm		 * turned into S-1-domainID-RID.
2978209962Smm		 */
2979275579Sdelphij		int flag = 0;
2980275579Sdelphij		idmap_stat stat, map_stat;
2981275579Sdelphij		uid_t pid;
2982275579Sdelphij		idmap_rid_t rid;
2983275579Sdelphij		idmap_get_handle_t *gh = NULL;
2984275579Sdelphij
2985275579Sdelphij		stat = idmap_get_create(&gh);
2986275579Sdelphij		if (stat != IDMAP_SUCCESS) {
2987275579Sdelphij			idmap_get_destroy(gh);
2988275579Sdelphij			return (ENOMEM);
2989275579Sdelphij		}
2990209962Smm		if (zoned && getzoneid() == GLOBAL_ZONEID)
2991209962Smm			return (ENOENT);
2992209962Smm		if (isuser) {
2993275579Sdelphij			stat = idmap_getuidbywinname(cp, NULL, flag, &pid);
2994275579Sdelphij			if (stat < 0)
2995275579Sdelphij				return (ENOENT);
2996275579Sdelphij			stat = idmap_get_sidbyuid(gh, pid, flag, &numericsid,
2997275579Sdelphij			    &rid, &map_stat);
2998209962Smm		} else {
2999275579Sdelphij			stat = idmap_getgidbywinname(cp, NULL, flag, &pid);
3000275579Sdelphij			if (stat < 0)
3001275579Sdelphij				return (ENOENT);
3002275579Sdelphij			stat = idmap_get_sidbygid(gh, pid, flag, &numericsid,
3003275579Sdelphij			    &rid, &map_stat);
3004209962Smm		}
3005275579Sdelphij		if (stat < 0) {
3006275579Sdelphij			idmap_get_destroy(gh);
3007209962Smm			return (ENOENT);
3008209962Smm		}
3009275579Sdelphij		stat = idmap_get_mappings(gh);
3010275579Sdelphij		idmap_get_destroy(gh);
3011275579Sdelphij
3012275579Sdelphij		if (stat < 0) {
3013275579Sdelphij			return (ENOENT);
3014275579Sdelphij		}
3015209962Smm		if (numericsid == NULL)
3016209962Smm			return (ENOENT);
3017209962Smm		cp = numericsid;
3018275579Sdelphij		*ridp = rid;
3019209962Smm		/* will be further decoded below */
3020277300Ssmh#else	/* !illumos */
3021219089Spjd		return (ENOENT);
3022277300Ssmh#endif	/* illumos */
3023209962Smm	}
3024209962Smm
3025209962Smm	if (strncmp(cp, "S-1-", 4) == 0) {
3026209962Smm		/* It's a numeric SID (eg "S-1-234-567-89") */
3027209962Smm		(void) strlcpy(domain, cp, domainlen);
3028209962Smm		errno = 0;
3029275579Sdelphij		if (*ridp == 0) {
3030275579Sdelphij			cp = strrchr(domain, '-');
3031275579Sdelphij			*cp = '\0';
3032275579Sdelphij			cp++;
3033275579Sdelphij			*ridp = strtoull(cp, &end, 10);
3034275579Sdelphij		} else {
3035275579Sdelphij			end = "";
3036275579Sdelphij		}
3037209962Smm		if (numericsid) {
3038209962Smm			free(numericsid);
3039209962Smm			numericsid = NULL;
3040209962Smm		}
3041209962Smm		if (errno != 0 || *end != '\0')
3042209962Smm			return (EINVAL);
3043209962Smm	} else if (!isdigit(*cp)) {
3044209962Smm		/*
3045209962Smm		 * It's a user/group name (eg "user") that needs to be
3046209962Smm		 * turned into a uid/gid
3047209962Smm		 */
3048209962Smm		if (zoned && getzoneid() == GLOBAL_ZONEID)
3049209962Smm			return (ENOENT);
3050209962Smm		if (isuser) {
3051209962Smm			struct passwd *pw;
3052209962Smm			pw = getpwnam(cp);
3053209962Smm			if (pw == NULL)
3054209962Smm				return (ENOENT);
3055209962Smm			*ridp = pw->pw_uid;
3056209962Smm		} else {
3057209962Smm			struct group *gr;
3058209962Smm			gr = getgrnam(cp);
3059209962Smm			if (gr == NULL)
3060209962Smm				return (ENOENT);
3061209962Smm			*ridp = gr->gr_gid;
3062209962Smm		}
3063209962Smm	} else {
3064209962Smm		/* It's a user/group ID (eg "12345"). */
3065209962Smm		uid_t id = strtoul(cp, &end, 10);
3066209962Smm		idmap_rid_t rid;
3067209962Smm		char *mapdomain;
3068209962Smm
3069209962Smm		if (*end != '\0')
3070209962Smm			return (EINVAL);
3071209962Smm		if (id > MAXUID) {
3072209962Smm			/* It's an ephemeral ID. */
3073209962Smm			if (idmap_id_to_numeric_domain_rid(id, isuser,
3074209962Smm			    &mapdomain, &rid) != 0)
3075209962Smm				return (ENOENT);
3076209962Smm			(void) strlcpy(domain, mapdomain, domainlen);
3077209962Smm			*ridp = rid;
3078209962Smm		} else {
3079209962Smm			*ridp = id;
3080209962Smm		}
3081209962Smm	}
3082209962Smm
3083209962Smm	ASSERT3P(numericsid, ==, NULL);
3084209962Smm	return (0);
3085209962Smm}
3086209962Smm
3087209962Smmstatic int
3088209962Smmzfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname,
3089209962Smm    uint64_t *propvalue, zfs_userquota_prop_t *typep)
3090209962Smm{
3091209962Smm	int err;
3092209962Smm	zfs_cmd_t zc = { 0 };
3093209962Smm
3094228103Smm	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3095209962Smm
3096209962Smm	err = userquota_propname_decode(propname,
3097209962Smm	    zfs_prop_get_int(zhp, ZFS_PROP_ZONED),
3098209962Smm	    typep, zc.zc_value, sizeof (zc.zc_value), &zc.zc_guid);
3099209962Smm	zc.zc_objset_type = *typep;
3100209962Smm	if (err)
3101209962Smm		return (err);
3102209962Smm
3103209962Smm	err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_USERSPACE_ONE, &zc);
3104209962Smm	if (err)
3105209962Smm		return (err);
3106209962Smm
3107209962Smm	*propvalue = zc.zc_cookie;
3108209962Smm	return (0);
3109209962Smm}
3110209962Smm
3111209962Smmint
3112209962Smmzfs_prop_get_userquota_int(zfs_handle_t *zhp, const char *propname,
3113209962Smm    uint64_t *propvalue)
3114209962Smm{
3115209962Smm	zfs_userquota_prop_t type;
3116209962Smm
3117209962Smm	return (zfs_prop_get_userquota_common(zhp, propname, propvalue,
3118209962Smm	    &type));
3119209962Smm}
3120209962Smm
3121209962Smmint
3122209962Smmzfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname,
3123209962Smm    char *propbuf, int proplen, boolean_t literal)
3124209962Smm{
3125209962Smm	int err;
3126209962Smm	uint64_t propvalue;
3127209962Smm	zfs_userquota_prop_t type;
3128209962Smm
3129209962Smm	err = zfs_prop_get_userquota_common(zhp, propname, &propvalue,
3130209962Smm	    &type);
3131209962Smm
3132209962Smm	if (err)
3133209962Smm		return (err);
3134209962Smm
3135209962Smm	if (literal) {
3136209962Smm		(void) snprintf(propbuf, proplen, "%llu", propvalue);
3137209962Smm	} else if (propvalue == 0 &&
3138209962Smm	    (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) {
3139209962Smm		(void) strlcpy(propbuf, "none", proplen);
3140209962Smm	} else {
3141209962Smm		zfs_nicenum(propvalue, propbuf, proplen);
3142209962Smm	}
3143209962Smm	return (0);
3144209962Smm}
3145209962Smm
3146228103Smmint
3147228103Smmzfs_prop_get_written_int(zfs_handle_t *zhp, const char *propname,
3148228103Smm    uint64_t *propvalue)
3149168404Spjd{
3150228103Smm	int err;
3151228103Smm	zfs_cmd_t zc = { 0 };
3152228103Smm	const char *snapname;
3153168404Spjd
3154228103Smm	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
3155168404Spjd
3156228103Smm	snapname = strchr(propname, '@') + 1;
3157228103Smm	if (strchr(snapname, '@')) {
3158228103Smm		(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
3159228103Smm	} else {
3160228103Smm		/* snapname is the short name, append it to zhp's fsname */
3161228103Smm		char *cp;
3162209962Smm
3163228103Smm		(void) strlcpy(zc.zc_value, zhp->zfs_name,
3164228103Smm		    sizeof (zc.zc_value));
3165228103Smm		cp = strchr(zc.zc_value, '@');
3166228103Smm		if (cp != NULL)
3167228103Smm			*cp = '\0';
3168228103Smm		(void) strlcat(zc.zc_value, "@", sizeof (zc.zc_value));
3169228103Smm		(void) strlcat(zc.zc_value, snapname, sizeof (zc.zc_value));
3170228103Smm	}
3171209962Smm
3172228103Smm	err = ioctl(zhp->zfs_hdl->libzfs_fd, ZFS_IOC_SPACE_WRITTEN, &zc);
3173228103Smm	if (err)
3174228103Smm		return (err);
3175228103Smm
3176228103Smm	*propvalue = zc.zc_cookie;
3177228103Smm	return (0);
3178209962Smm}
3179209962Smm
3180168404Spjdint
3181228103Smmzfs_prop_get_written(zfs_handle_t *zhp, const char *propname,
3182228103Smm    char *propbuf, int proplen, boolean_t literal)
3183168404Spjd{
3184228103Smm	int err;
3185228103Smm	uint64_t propvalue;
3186168404Spjd
3187228103Smm	err = zfs_prop_get_written_int(zhp, propname, &propvalue);
3188185029Spjd
3189228103Smm	if (err)
3190228103Smm		return (err);
3191209962Smm
3192228103Smm	if (literal) {
3193228103Smm		(void) snprintf(propbuf, proplen, "%llu", propvalue);
3194228103Smm	} else {
3195228103Smm		zfs_nicenum(propvalue, propbuf, proplen);
3196168404Spjd	}
3197228103Smm	return (0);
3198168404Spjd}
3199168404Spjd
3200168404Spjd/*
3201228103Smm * Returns the name of the given zfs handle.
3202168404Spjd */
3203228103Smmconst char *
3204228103Smmzfs_get_name(const zfs_handle_t *zhp)
3205168404Spjd{
3206228103Smm	return (zhp->zfs_name);
3207228103Smm}
3208168404Spjd
3209228103Smm/*
3210307106Smav * Returns the name of the parent pool for the given zfs handle.
3211307106Smav */
3212307106Smavconst char *
3213307106Smavzfs_get_pool_name(const zfs_handle_t *zhp)
3214307106Smav{
3215307106Smav	return (zhp->zpool_hdl->zpool_name);
3216307106Smav}
3217307106Smav
3218307106Smav/*
3219228103Smm * Returns the type of the given zfs handle.
3220228103Smm */
3221228103Smmzfs_type_t
3222228103Smmzfs_get_type(const zfs_handle_t *zhp)
3223228103Smm{
3224228103Smm	return (zhp->zfs_type);
3225168404Spjd}
3226168404Spjd
3227168404Spjd/*
3228219089Spjd * Is one dataset name a child dataset of another?
3229219089Spjd *
3230219089Spjd * Needs to handle these cases:
3231219089Spjd * Dataset 1	"a/foo"		"a/foo"		"a/foo"		"a/foo"
3232219089Spjd * Dataset 2	"a/fo"		"a/foobar"	"a/bar/baz"	"a/foo/bar"
3233219089Spjd * Descendant?	No.		No.		No.		Yes.
3234219089Spjd */
3235219089Spjdstatic boolean_t
3236219089Spjdis_descendant(const char *ds1, const char *ds2)
3237219089Spjd{
3238219089Spjd	size_t d1len = strlen(ds1);
3239219089Spjd
3240219089Spjd	/* ds2 can't be a descendant if it's smaller */
3241219089Spjd	if (strlen(ds2) < d1len)
3242219089Spjd		return (B_FALSE);
3243219089Spjd
3244219089Spjd	/* otherwise, compare strings and verify that there's a '/' char */
3245219089Spjd	return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0));
3246219089Spjd}
3247219089Spjd
3248219089Spjd/*
3249168404Spjd * Given a complete name, return just the portion that refers to the parent.
3250228103Smm * Will return -1 if there is no parent (path is just the name of the
3251228103Smm * pool).
3252168404Spjd */
3253168404Spjdstatic int
3254168404Spjdparent_name(const char *path, char *buf, size_t buflen)
3255168404Spjd{
3256228103Smm	char *slashp;
3257168404Spjd
3258228103Smm	(void) strlcpy(buf, path, buflen);
3259228103Smm
3260228103Smm	if ((slashp = strrchr(buf, '/')) == NULL)
3261168404Spjd		return (-1);
3262228103Smm	*slashp = '\0';
3263168404Spjd
3264168404Spjd	return (0);
3265168404Spjd}
3266168404Spjd
3267168404Spjd/*
3268185029Spjd * If accept_ancestor is false, then check to make sure that the given path has
3269185029Spjd * a parent, and that it exists.  If accept_ancestor is true, then find the
3270185029Spjd * closest existing ancestor for the given path.  In prefixlen return the
3271185029Spjd * length of already existing prefix of the given path.  We also fetch the
3272185029Spjd * 'zoned' property, which is used to validate property settings when creating
3273185029Spjd * new datasets.
3274168404Spjd */
3275168404Spjdstatic int
3276185029Spjdcheck_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned,
3277185029Spjd    boolean_t accept_ancestor, int *prefixlen)
3278168404Spjd{
3279168404Spjd	zfs_cmd_t zc = { 0 };
3280307108Smav	char parent[ZFS_MAX_DATASET_NAME_LEN];
3281168404Spjd	char *slash;
3282168404Spjd	zfs_handle_t *zhp;
3283168404Spjd	char errbuf[1024];
3284219089Spjd	uint64_t is_zoned;
3285168404Spjd
3286209962Smm	(void) snprintf(errbuf, sizeof (errbuf),
3287209962Smm	    dgettext(TEXT_DOMAIN, "cannot create '%s'"), path);
3288168404Spjd
3289168404Spjd	/* get parent, and check to see if this is just a pool */
3290168404Spjd	if (parent_name(path, parent, sizeof (parent)) != 0) {
3291168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3292168404Spjd		    "missing dataset name"));
3293168404Spjd		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3294168404Spjd	}
3295168404Spjd
3296168404Spjd	/* check to see if the pool exists */
3297168404Spjd	if ((slash = strchr(parent, '/')) == NULL)
3298168404Spjd		slash = parent + strlen(parent);
3299168404Spjd	(void) strncpy(zc.zc_name, parent, slash - parent);
3300168404Spjd	zc.zc_name[slash - parent] = '\0';
3301168404Spjd	if (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_STATS, &zc) != 0 &&
3302168404Spjd	    errno == ENOENT) {
3303168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3304168404Spjd		    "no such pool '%s'"), zc.zc_name);
3305168404Spjd		return (zfs_error(hdl, EZFS_NOENT, errbuf));
3306168404Spjd	}
3307168404Spjd
3308168404Spjd	/* check to see if the parent dataset exists */
3309185029Spjd	while ((zhp = make_dataset_handle(hdl, parent)) == NULL) {
3310185029Spjd		if (errno == ENOENT && accept_ancestor) {
3311185029Spjd			/*
3312185029Spjd			 * Go deeper to find an ancestor, give up on top level.
3313185029Spjd			 */
3314185029Spjd			if (parent_name(parent, parent, sizeof (parent)) != 0) {
3315185029Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3316185029Spjd				    "no such pool '%s'"), zc.zc_name);
3317185029Spjd				return (zfs_error(hdl, EZFS_NOENT, errbuf));
3318185029Spjd			}
3319185029Spjd		} else if (errno == ENOENT) {
3320168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3321168404Spjd			    "parent does not exist"));
3322168404Spjd			return (zfs_error(hdl, EZFS_NOENT, errbuf));
3323185029Spjd		} else
3324168404Spjd			return (zfs_standard_error(hdl, errno, errbuf));
3325168404Spjd	}
3326168404Spjd
3327219089Spjd	is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
3328219089Spjd	if (zoned != NULL)
3329219089Spjd		*zoned = is_zoned;
3330219089Spjd
3331168404Spjd	/* we are in a non-global zone, but parent is in the global zone */
3332219089Spjd	if (getzoneid() != GLOBAL_ZONEID && !is_zoned) {
3333168404Spjd		(void) zfs_standard_error(hdl, EPERM, errbuf);
3334168404Spjd		zfs_close(zhp);
3335168404Spjd		return (-1);
3336168404Spjd	}
3337168404Spjd
3338168404Spjd	/* make sure parent is a filesystem */
3339168404Spjd	if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) {
3340168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3341168404Spjd		    "parent is not a filesystem"));
3342168404Spjd		(void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
3343168404Spjd		zfs_close(zhp);
3344168404Spjd		return (-1);
3345168404Spjd	}
3346168404Spjd
3347168404Spjd	zfs_close(zhp);
3348185029Spjd	if (prefixlen != NULL)
3349185029Spjd		*prefixlen = strlen(parent);
3350168404Spjd	return (0);
3351168404Spjd}
3352168404Spjd
3353168404Spjd/*
3354185029Spjd * Finds whether the dataset of the given type(s) exists.
3355185029Spjd */
3356185029Spjdboolean_t
3357185029Spjdzfs_dataset_exists(libzfs_handle_t *hdl, const char *path, zfs_type_t types)
3358185029Spjd{
3359185029Spjd	zfs_handle_t *zhp;
3360185029Spjd
3361185029Spjd	if (!zfs_validate_name(hdl, path, types, B_FALSE))
3362185029Spjd		return (B_FALSE);
3363185029Spjd
3364185029Spjd	/*
3365185029Spjd	 * Try to get stats for the dataset, which will tell us if it exists.
3366185029Spjd	 */
3367185029Spjd	if ((zhp = make_dataset_handle(hdl, path)) != NULL) {
3368185029Spjd		int ds_type = zhp->zfs_type;
3369185029Spjd
3370185029Spjd		zfs_close(zhp);
3371185029Spjd		if (types & ds_type)
3372185029Spjd			return (B_TRUE);
3373185029Spjd	}
3374185029Spjd	return (B_FALSE);
3375185029Spjd}
3376185029Spjd
3377185029Spjd/*
3378185029Spjd * Given a path to 'target', create all the ancestors between
3379185029Spjd * the prefixlen portion of the path, and the target itself.
3380185029Spjd * Fail if the initial prefixlen-ancestor does not already exist.
3381185029Spjd */
3382185029Spjdint
3383185029Spjdcreate_parents(libzfs_handle_t *hdl, char *target, int prefixlen)
3384185029Spjd{
3385185029Spjd	zfs_handle_t *h;
3386185029Spjd	char *cp;
3387185029Spjd	const char *opname;
3388185029Spjd
3389185029Spjd	/* make sure prefix exists */
3390185029Spjd	cp = target + prefixlen;
3391185029Spjd	if (*cp != '/') {
3392185029Spjd		assert(strchr(cp, '/') == NULL);
3393185029Spjd		h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
3394185029Spjd	} else {
3395185029Spjd		*cp = '\0';
3396185029Spjd		h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
3397185029Spjd		*cp = '/';
3398185029Spjd	}
3399185029Spjd	if (h == NULL)
3400185029Spjd		return (-1);
3401185029Spjd	zfs_close(h);
3402185029Spjd
3403185029Spjd	/*
3404185029Spjd	 * Attempt to create, mount, and share any ancestor filesystems,
3405185029Spjd	 * up to the prefixlen-long one.
3406185029Spjd	 */
3407185029Spjd	for (cp = target + prefixlen + 1;
3408307050Smav	    (cp = strchr(cp, '/')) != NULL; *cp = '/', cp++) {
3409185029Spjd
3410185029Spjd		*cp = '\0';
3411185029Spjd
3412185029Spjd		h = make_dataset_handle(hdl, target);
3413185029Spjd		if (h) {
3414185029Spjd			/* it already exists, nothing to do here */
3415185029Spjd			zfs_close(h);
3416185029Spjd			continue;
3417185029Spjd		}
3418185029Spjd
3419185029Spjd		if (zfs_create(hdl, target, ZFS_TYPE_FILESYSTEM,
3420185029Spjd		    NULL) != 0) {
3421185029Spjd			opname = dgettext(TEXT_DOMAIN, "create");
3422185029Spjd			goto ancestorerr;
3423185029Spjd		}
3424185029Spjd
3425185029Spjd		h = zfs_open(hdl, target, ZFS_TYPE_FILESYSTEM);
3426185029Spjd		if (h == NULL) {
3427185029Spjd			opname = dgettext(TEXT_DOMAIN, "open");
3428185029Spjd			goto ancestorerr;
3429185029Spjd		}
3430185029Spjd
3431185029Spjd		if (zfs_mount(h, NULL, 0) != 0) {
3432185029Spjd			opname = dgettext(TEXT_DOMAIN, "mount");
3433185029Spjd			goto ancestorerr;
3434185029Spjd		}
3435185029Spjd
3436185029Spjd		if (zfs_share(h) != 0) {
3437185029Spjd			opname = dgettext(TEXT_DOMAIN, "share");
3438185029Spjd			goto ancestorerr;
3439185029Spjd		}
3440185029Spjd
3441185029Spjd		zfs_close(h);
3442185029Spjd	}
3443185029Spjd
3444185029Spjd	return (0);
3445185029Spjd
3446185029Spjdancestorerr:
3447185029Spjd	zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3448185029Spjd	    "failed to %s ancestor '%s'"), opname, target);
3449185029Spjd	return (-1);
3450185029Spjd}
3451185029Spjd
3452185029Spjd/*
3453185029Spjd * Creates non-existing ancestors of the given path.
3454185029Spjd */
3455185029Spjdint
3456185029Spjdzfs_create_ancestors(libzfs_handle_t *hdl, const char *path)
3457185029Spjd{
3458185029Spjd	int prefix;
3459185029Spjd	char *path_copy;
3460339129Smav	char errbuf[1024];
3461307107Smav	int rc = 0;
3462185029Spjd
3463339129Smav	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3464339129Smav	    "cannot create '%s'"), path);
3465339129Smav
3466339129Smav	/*
3467339129Smav	 * Check that we are not passing the nesting limit
3468339129Smav	 * before we start creating any ancestors.
3469339129Smav	 */
3470339129Smav	if (dataset_nestcheck(path) != 0) {
3471339129Smav		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3472339129Smav		    "maximum name nesting depth exceeded"));
3473339129Smav		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3474339129Smav	}
3475339129Smav
3476219089Spjd	if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0)
3477185029Spjd		return (-1);
3478185029Spjd
3479185029Spjd	if ((path_copy = strdup(path)) != NULL) {
3480185029Spjd		rc = create_parents(hdl, path_copy, prefix);
3481185029Spjd		free(path_copy);
3482185029Spjd	}
3483185029Spjd	if (path_copy == NULL || rc != 0)
3484185029Spjd		return (-1);
3485185029Spjd
3486185029Spjd	return (0);
3487185029Spjd}
3488185029Spjd
3489185029Spjd/*
3490168404Spjd * Create a new filesystem or volume.
3491168404Spjd */
3492168404Spjdint
3493168404Spjdzfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type,
3494168404Spjd    nvlist_t *props)
3495168404Spjd{
3496168404Spjd	int ret;
3497168404Spjd	uint64_t size = 0;
3498168404Spjd	uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE);
3499168404Spjd	char errbuf[1024];
3500168404Spjd	uint64_t zoned;
3501298472Savg	enum lzc_dataset_type ost;
3502321576Smav	zpool_handle_t *zpool_handle;
3503168404Spjd
3504168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3505168404Spjd	    "cannot create '%s'"), path);
3506168404Spjd
3507168404Spjd	/* validate the path, taking care to note the extended error message */
3508185029Spjd	if (!zfs_validate_name(hdl, path, type, B_TRUE))
3509168404Spjd		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3510168404Spjd
3511339129Smav	if (dataset_nestcheck(path) != 0) {
3512339129Smav		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3513339129Smav		    "maximum name nesting depth exceeded"));
3514339129Smav		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3515339129Smav	}
3516339129Smav
3517168404Spjd	/* validate parents exist */
3518185029Spjd	if (check_parents(hdl, path, &zoned, B_FALSE, NULL) != 0)
3519168404Spjd		return (-1);
3520168404Spjd
3521168404Spjd	/*
3522168404Spjd	 * The failure modes when creating a dataset of a different type over
3523168404Spjd	 * one that already exists is a little strange.  In particular, if you
3524168404Spjd	 * try to create a dataset on top of an existing dataset, the ioctl()
3525168404Spjd	 * will return ENOENT, not EEXIST.  To prevent this from happening, we
3526168404Spjd	 * first try to see if the dataset exists.
3527168404Spjd	 */
3528248571Smm	if (zfs_dataset_exists(hdl, path, ZFS_TYPE_DATASET)) {
3529168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3530168404Spjd		    "dataset already exists"));
3531168404Spjd		return (zfs_error(hdl, EZFS_EXISTS, errbuf));
3532168404Spjd	}
3533168404Spjd
3534168404Spjd	if (type == ZFS_TYPE_VOLUME)
3535298472Savg		ost = LZC_DATSET_TYPE_ZVOL;
3536168404Spjd	else
3537298472Savg		ost = LZC_DATSET_TYPE_ZFS;
3538168404Spjd
3539289500Smav	/* open zpool handle for prop validation */
3540307108Smav	char pool_path[ZFS_MAX_DATASET_NAME_LEN];
3541289500Smav	(void) strlcpy(pool_path, path, sizeof (pool_path));
3542289500Smav
3543289500Smav	/* truncate pool_path at first slash */
3544289500Smav	char *p = strchr(pool_path, '/');
3545289500Smav	if (p != NULL)
3546289500Smav		*p = '\0';
3547289500Smav
3548321576Smav	if ((zpool_handle = zpool_open(hdl, pool_path)) == NULL)
3549321576Smav		return (-1);
3550289500Smav
3551185029Spjd	if (props && (props = zfs_valid_proplist(hdl, type, props,
3552289500Smav	    zoned, NULL, zpool_handle, errbuf)) == 0) {
3553289500Smav		zpool_close(zpool_handle);
3554168404Spjd		return (-1);
3555289500Smav	}
3556289500Smav	zpool_close(zpool_handle);
3557168404Spjd
3558168404Spjd	if (type == ZFS_TYPE_VOLUME) {
3559168404Spjd		/*
3560168404Spjd		 * If we are creating a volume, the size and block size must
3561168404Spjd		 * satisfy a few restraints.  First, the blocksize must be a
3562168404Spjd		 * valid block size between SPA_{MIN,MAX}BLOCKSIZE.  Second, the
3563168404Spjd		 * volsize must be a multiple of the block size, and cannot be
3564168404Spjd		 * zero.
3565168404Spjd		 */
3566168404Spjd		if (props == NULL || nvlist_lookup_uint64(props,
3567168404Spjd		    zfs_prop_to_name(ZFS_PROP_VOLSIZE), &size) != 0) {
3568168404Spjd			nvlist_free(props);
3569168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3570168404Spjd			    "missing volume size"));
3571168404Spjd			return (zfs_error(hdl, EZFS_BADPROP, errbuf));
3572168404Spjd		}
3573168404Spjd
3574168404Spjd		if ((ret = nvlist_lookup_uint64(props,
3575168404Spjd		    zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
3576168404Spjd		    &blocksize)) != 0) {
3577168404Spjd			if (ret == ENOENT) {
3578168404Spjd				blocksize = zfs_prop_default_numeric(
3579168404Spjd				    ZFS_PROP_VOLBLOCKSIZE);
3580168404Spjd			} else {
3581168404Spjd				nvlist_free(props);
3582168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3583168404Spjd				    "missing volume block size"));
3584168404Spjd				return (zfs_error(hdl, EZFS_BADPROP, errbuf));
3585168404Spjd			}
3586168404Spjd		}
3587168404Spjd
3588168404Spjd		if (size == 0) {
3589168404Spjd			nvlist_free(props);
3590168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3591168404Spjd			    "volume size cannot be zero"));
3592168404Spjd			return (zfs_error(hdl, EZFS_BADPROP, errbuf));
3593168404Spjd		}
3594168404Spjd
3595168404Spjd		if (size % blocksize != 0) {
3596168404Spjd			nvlist_free(props);
3597168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3598168404Spjd			    "volume size must be a multiple of volume block "
3599168404Spjd			    "size"));
3600168404Spjd			return (zfs_error(hdl, EZFS_BADPROP, errbuf));
3601168404Spjd		}
3602168404Spjd	}
3603168404Spjd
3604248571Smm	/* create the dataset */
3605248571Smm	ret = lzc_create(path, ost, props);
3606168404Spjd	nvlist_free(props);
3607168404Spjd
3608168404Spjd	/* check for failure */
3609168404Spjd	if (ret != 0) {
3610307108Smav		char parent[ZFS_MAX_DATASET_NAME_LEN];
3611168404Spjd		(void) parent_name(path, parent, sizeof (parent));
3612168404Spjd
3613168404Spjd		switch (errno) {
3614168404Spjd		case ENOENT:
3615168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3616168404Spjd			    "no such parent '%s'"), parent);
3617168404Spjd			return (zfs_error(hdl, EZFS_NOENT, errbuf));
3618168404Spjd
3619168404Spjd		case EINVAL:
3620168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3621168404Spjd			    "parent '%s' is not a filesystem"), parent);
3622168404Spjd			return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
3623168404Spjd
3624185029Spjd		case ENOTSUP:
3625185029Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3626185029Spjd			    "pool must be upgraded to set this "
3627185029Spjd			    "property or value"));
3628185029Spjd			return (zfs_error(hdl, EZFS_BADVERSION, errbuf));
3629329489Smav		case ERANGE:
3630329489Smav			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3631329489Smav			    "invalid property value(s) specified"));
3632329489Smav			return (zfs_error(hdl, EZFS_BADPROP, errbuf));
3633168404Spjd#ifdef _ILP32
3634168404Spjd		case EOVERFLOW:
3635168404Spjd			/*
3636168404Spjd			 * This platform can't address a volume this big.
3637168404Spjd			 */
3638168404Spjd			if (type == ZFS_TYPE_VOLUME)
3639168404Spjd				return (zfs_error(hdl, EZFS_VOLTOOBIG,
3640168404Spjd				    errbuf));
3641168404Spjd#endif
3642168404Spjd			/* FALLTHROUGH */
3643168404Spjd		default:
3644168404Spjd			return (zfs_standard_error(hdl, errno, errbuf));
3645168404Spjd		}
3646168404Spjd	}
3647168404Spjd
3648168404Spjd	return (0);
3649168404Spjd}
3650168404Spjd
3651168404Spjd/*
3652168404Spjd * Destroys the given dataset.  The caller must make sure that the filesystem
3653238422Smm * isn't mounted, and that there are no active dependents. If the file system
3654238422Smm * does not exist this function does nothing.
3655168404Spjd */
3656168404Spjdint
3657219089Spjdzfs_destroy(zfs_handle_t *zhp, boolean_t defer)
3658168404Spjd{
3659342943Savg	int error;
3660168404Spjd
3661342943Savg	if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT && defer)
3662342943Savg		return (EINVAL);
3663342943Savg
3664260183Sdelphij	if (zhp->zfs_type == ZFS_TYPE_BOOKMARK) {
3665260183Sdelphij		nvlist_t *nv = fnvlist_alloc();
3666260183Sdelphij		fnvlist_add_boolean(nv, zhp->zfs_name);
3667342943Savg		error = lzc_destroy_bookmarks(nv, NULL);
3668260183Sdelphij		fnvlist_free(nv);
3669260183Sdelphij		if (error != 0) {
3670342943Savg			return (zfs_standard_error_fmt(zhp->zfs_hdl, error,
3671260183Sdelphij			    dgettext(TEXT_DOMAIN, "cannot destroy '%s'"),
3672260183Sdelphij			    zhp->zfs_name));
3673260183Sdelphij		}
3674260183Sdelphij		return (0);
3675260183Sdelphij	}
3676260183Sdelphij
3677342943Savg	if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
3678342943Savg		nvlist_t *nv = fnvlist_alloc();
3679342943Savg		fnvlist_add_boolean(nv, zhp->zfs_name);
3680342943Savg		error = lzc_destroy_snaps(nv, defer, NULL);
3681342943Savg		fnvlist_free(nv);
3682168404Spjd	} else {
3683342943Savg		error = lzc_destroy(zhp->zfs_name);
3684168404Spjd	}
3685168404Spjd
3686342943Savg	if (error != 0 && error != ENOENT) {
3687168404Spjd		return (zfs_standard_error_fmt(zhp->zfs_hdl, errno,
3688168404Spjd		    dgettext(TEXT_DOMAIN, "cannot destroy '%s'"),
3689168404Spjd		    zhp->zfs_name));
3690168404Spjd	}
3691168404Spjd
3692168404Spjd	remove_mountpoint(zhp);
3693168404Spjd
3694168404Spjd	return (0);
3695168404Spjd}
3696168404Spjd
3697168404Spjdstruct destroydata {
3698228103Smm	nvlist_t *nvl;
3699228103Smm	const char *snapname;
3700168404Spjd};
3701168404Spjd
3702168404Spjdstatic int
3703219089Spjdzfs_check_snap_cb(zfs_handle_t *zhp, void *arg)
3704168404Spjd{
3705168404Spjd	struct destroydata *dd = arg;
3706307108Smav	char name[ZFS_MAX_DATASET_NAME_LEN];
3707219089Spjd	int rv = 0;
3708168404Spjd
3709228103Smm	(void) snprintf(name, sizeof (name),
3710228103Smm	    "%s@%s", zhp->zfs_name, dd->snapname);
3711168404Spjd
3712251646Sdelphij	if (lzc_exists(name))
3713228103Smm		verify(nvlist_add_boolean(dd->nvl, name) == 0);
3714168404Spjd
3715228103Smm	rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, dd);
3716228103Smm	zfs_close(zhp);
3717168404Spjd	return (rv);
3718168404Spjd}
3719168404Spjd
3720168404Spjd/*
3721168404Spjd * Destroys all snapshots with the given name in zhp & descendants.
3722168404Spjd */
3723168404Spjdint
3724219089Spjdzfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer)
3725168404Spjd{
3726168404Spjd	int ret;
3727168404Spjd	struct destroydata dd = { 0 };
3728168404Spjd
3729168404Spjd	dd.snapname = snapname;
3730228103Smm	verify(nvlist_alloc(&dd.nvl, NV_UNIQUE_NAME, 0) == 0);
3731228103Smm	(void) zfs_check_snap_cb(zfs_handle_dup(zhp), &dd);
3732168404Spjd
3733251646Sdelphij	if (nvlist_empty(dd.nvl)) {
3734228103Smm		ret = zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT,
3735168404Spjd		    dgettext(TEXT_DOMAIN, "cannot destroy '%s@%s'"),
3736228103Smm		    zhp->zfs_name, snapname);
3737228103Smm	} else {
3738248571Smm		ret = zfs_destroy_snaps_nvl(zhp->zfs_hdl, dd.nvl, defer);
3739168404Spjd	}
3740228103Smm	nvlist_free(dd.nvl);
3741228103Smm	return (ret);
3742228103Smm}
3743168404Spjd
3744228103Smm/*
3745248571Smm * Destroys all the snapshots named in the nvlist.
3746228103Smm */
3747228103Smmint
3748248571Smmzfs_destroy_snaps_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, boolean_t defer)
3749228103Smm{
3750228103Smm	int ret;
3751307105Smav	nvlist_t *errlist = NULL;
3752228103Smm
3753248571Smm	ret = lzc_destroy_snaps(snaps, defer, &errlist);
3754168404Spjd
3755307105Smav	if (ret == 0) {
3756307105Smav		nvlist_free(errlist);
3757248571Smm		return (0);
3758307105Smav	}
3759248571Smm
3760251646Sdelphij	if (nvlist_empty(errlist)) {
3761168404Spjd		char errbuf[1024];
3762248571Smm		(void) snprintf(errbuf, sizeof (errbuf),
3763248571Smm		    dgettext(TEXT_DOMAIN, "cannot destroy snapshots"));
3764168404Spjd
3765248571Smm		ret = zfs_standard_error(hdl, ret, errbuf);
3766248571Smm	}
3767248571Smm	for (nvpair_t *pair = nvlist_next_nvpair(errlist, NULL);
3768248571Smm	    pair != NULL; pair = nvlist_next_nvpair(errlist, pair)) {
3769248571Smm		char errbuf[1024];
3770248571Smm		(void) snprintf(errbuf, sizeof (errbuf),
3771248571Smm		    dgettext(TEXT_DOMAIN, "cannot destroy snapshot %s"),
3772248571Smm		    nvpair_name(pair));
3773168404Spjd
3774248571Smm		switch (fnvpair_value_int32(pair)) {
3775168404Spjd		case EEXIST:
3776248571Smm			zfs_error_aux(hdl,
3777248571Smm			    dgettext(TEXT_DOMAIN, "snapshot is cloned"));
3778248571Smm			ret = zfs_error(hdl, EZFS_EXISTS, errbuf);
3779248571Smm			break;
3780168404Spjd		default:
3781248571Smm			ret = zfs_standard_error(hdl, errno, errbuf);
3782248571Smm			break;
3783168404Spjd		}
3784168404Spjd	}
3785168404Spjd
3786307105Smav	nvlist_free(errlist);
3787248571Smm	return (ret);
3788168404Spjd}
3789168404Spjd
3790168404Spjd/*
3791168404Spjd * Clones the given dataset.  The target must be of the same type as the source.
3792168404Spjd */
3793168404Spjdint
3794168404Spjdzfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props)
3795168404Spjd{
3796307108Smav	char parent[ZFS_MAX_DATASET_NAME_LEN];
3797168404Spjd	int ret;
3798168404Spjd	char errbuf[1024];
3799168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
3800168404Spjd	uint64_t zoned;
3801168404Spjd
3802168404Spjd	assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT);
3803168404Spjd
3804168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3805168404Spjd	    "cannot create '%s'"), target);
3806168404Spjd
3807228103Smm	/* validate the target/clone name */
3808185029Spjd	if (!zfs_validate_name(hdl, target, ZFS_TYPE_FILESYSTEM, B_TRUE))
3809168404Spjd		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3810168404Spjd
3811168404Spjd	/* validate parents exist */
3812185029Spjd	if (check_parents(hdl, target, &zoned, B_FALSE, NULL) != 0)
3813168404Spjd		return (-1);
3814168404Spjd
3815168404Spjd	(void) parent_name(target, parent, sizeof (parent));
3816168404Spjd
3817168404Spjd	/* do the clone */
3818168404Spjd
3819168404Spjd	if (props) {
3820248571Smm		zfs_type_t type;
3821339103Smav
3822248571Smm		if (ZFS_IS_VOLUME(zhp)) {
3823248571Smm			type = ZFS_TYPE_VOLUME;
3824248571Smm		} else {
3825248571Smm			type = ZFS_TYPE_FILESYSTEM;
3826248571Smm		}
3827185029Spjd		if ((props = zfs_valid_proplist(hdl, type, props, zoned,
3828289500Smav		    zhp, zhp->zpool_hdl, errbuf)) == NULL)
3829168404Spjd			return (-1);
3830339103Smav		if (zfs_fix_auto_resv(zhp, props) == -1) {
3831339103Smav			nvlist_free(props);
3832339103Smav			return (-1);
3833339103Smav		}
3834168404Spjd	}
3835168404Spjd
3836248571Smm	ret = lzc_clone(target, zhp->zfs_name, props);
3837248571Smm	nvlist_free(props);
3838168404Spjd
3839168404Spjd	if (ret != 0) {
3840168404Spjd		switch (errno) {
3841168404Spjd
3842168404Spjd		case ENOENT:
3843168404Spjd			/*
3844168404Spjd			 * The parent doesn't exist.  We should have caught this
3845168404Spjd			 * above, but there may a race condition that has since
3846168404Spjd			 * destroyed the parent.
3847168404Spjd			 *
3848168404Spjd			 * At this point, we don't know whether it's the source
3849168404Spjd			 * that doesn't exist anymore, or whether the target
3850168404Spjd			 * dataset doesn't exist.
3851168404Spjd			 */
3852168404Spjd			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
3853168404Spjd			    "no such parent '%s'"), parent);
3854168404Spjd			return (zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf));
3855168404Spjd
3856168404Spjd		case EXDEV:
3857168404Spjd			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
3858168404Spjd			    "source and target pools differ"));
3859168404Spjd			return (zfs_error(zhp->zfs_hdl, EZFS_CROSSTARGET,
3860168404Spjd			    errbuf));
3861168404Spjd
3862168404Spjd		default:
3863168404Spjd			return (zfs_standard_error(zhp->zfs_hdl, errno,
3864168404Spjd			    errbuf));
3865168404Spjd		}
3866168404Spjd	}
3867168404Spjd
3868168404Spjd	return (ret);
3869168404Spjd}
3870168404Spjd
3871168404Spjd/*
3872168404Spjd * Promotes the given clone fs to be the clone parent.
3873168404Spjd */
3874168404Spjdint
3875168404Spjdzfs_promote(zfs_handle_t *zhp)
3876168404Spjd{
3877168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
3878321577Smav	char snapname[ZFS_MAX_DATASET_NAME_LEN];
3879168404Spjd	int ret;
3880168404Spjd	char errbuf[1024];
3881168404Spjd
3882168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3883168404Spjd	    "cannot promote '%s'"), zhp->zfs_name);
3884168404Spjd
3885168404Spjd	if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
3886168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3887168404Spjd		    "snapshots can not be promoted"));
3888168404Spjd		return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
3889168404Spjd	}
3890168404Spjd
3891321577Smav	if (zhp->zfs_dmustats.dds_origin[0] == '\0') {
3892168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3893168404Spjd		    "not a cloned filesystem"));
3894168404Spjd		return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
3895168404Spjd	}
3896168404Spjd
3897332535Smav	if (!zfs_validate_name(hdl, zhp->zfs_name, zhp->zfs_type, B_TRUE))
3898332535Smav		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3899332535Smav
3900321577Smav	ret = lzc_promote(zhp->zfs_name, snapname, sizeof (snapname));
3901168404Spjd
3902168404Spjd	if (ret != 0) {
3903321577Smav		switch (ret) {
3904168404Spjd		case EEXIST:
3905219089Spjd			/* There is a conflicting snapshot name. */
3906168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3907219089Spjd			    "conflicting snapshot '%s' from parent '%s'"),
3908321577Smav			    snapname, zhp->zfs_dmustats.dds_origin);
3909168404Spjd			return (zfs_error(hdl, EZFS_EXISTS, errbuf));
3910168404Spjd
3911168404Spjd		default:
3912321577Smav			return (zfs_standard_error(hdl, ret, errbuf));
3913168404Spjd		}
3914168404Spjd	}
3915168404Spjd	return (ret);
3916168404Spjd}
3917168404Spjd
3918248571Smmtypedef struct snapdata {
3919248571Smm	nvlist_t *sd_nvl;
3920248571Smm	const char *sd_snapname;
3921248571Smm} snapdata_t;
3922248571Smm
3923248571Smmstatic int
3924248571Smmzfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
3925248571Smm{
3926248571Smm	snapdata_t *sd = arg;
3927307108Smav	char name[ZFS_MAX_DATASET_NAME_LEN];
3928248571Smm	int rv = 0;
3929248571Smm
3930253819Sdelphij	if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) == 0) {
3931253819Sdelphij		(void) snprintf(name, sizeof (name),
3932253819Sdelphij		    "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
3933248571Smm
3934253819Sdelphij		fnvlist_add_boolean(sd->sd_nvl, name);
3935248571Smm
3936253819Sdelphij		rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
3937253819Sdelphij	}
3938248571Smm	zfs_close(zhp);
3939253819Sdelphij
3940248571Smm	return (rv);
3941248571Smm}
3942248571Smm
3943332525Smavint
3944332525Smavzfs_remap_indirects(libzfs_handle_t *hdl, const char *fs)
3945332525Smav{
3946332525Smav	int err;
3947332525Smav	char errbuf[1024];
3948332525Smav
3949332525Smav	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3950339119Smav	    "cannot remap dataset '%s'"), fs);
3951332525Smav
3952332525Smav	err = lzc_remap(fs);
3953332525Smav
3954332525Smav	if (err != 0) {
3955339119Smav		switch (err) {
3956339119Smav		case ENOTSUP:
3957339119Smav			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
3958339119Smav			    "pool must be upgraded"));
3959339119Smav			(void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
3960339119Smav			break;
3961339119Smav		case EINVAL:
3962339119Smav			(void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
3963339119Smav			break;
3964339119Smav		default:
3965339119Smav			(void) zfs_standard_error(hdl, err, errbuf);
3966339119Smav			break;
3967339119Smav		}
3968332525Smav	}
3969332525Smav
3970332525Smav	return (err);
3971332525Smav}
3972332525Smav
3973168404Spjd/*
3974248571Smm * Creates snapshots.  The keys in the snaps nvlist are the snapshots to be
3975248571Smm * created.
3976168404Spjd */
3977168404Spjdint
3978248571Smmzfs_snapshot_nvl(libzfs_handle_t *hdl, nvlist_t *snaps, nvlist_t *props)
3979168404Spjd{
3980168404Spjd	int ret;
3981168404Spjd	char errbuf[1024];
3982248571Smm	nvpair_t *elem;
3983248571Smm	nvlist_t *errors;
3984168404Spjd
3985168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
3986248571Smm	    "cannot create snapshots "));
3987168404Spjd
3988248571Smm	elem = NULL;
3989248571Smm	while ((elem = nvlist_next_nvpair(snaps, elem)) != NULL) {
3990248571Smm		const char *snapname = nvpair_name(elem);
3991168404Spjd
3992248571Smm		/* validate the target name */
3993248571Smm		if (!zfs_validate_name(hdl, snapname, ZFS_TYPE_SNAPSHOT,
3994248571Smm		    B_TRUE)) {
3995248571Smm			(void) snprintf(errbuf, sizeof (errbuf),
3996248571Smm			    dgettext(TEXT_DOMAIN,
3997248571Smm			    "cannot create snapshot '%s'"), snapname);
3998248571Smm			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
3999248571Smm		}
4000248571Smm	}
4001185029Spjd
4002289500Smav	/*
4003289500Smav	 * get pool handle for prop validation. assumes all snaps are in the
4004289500Smav	 * same pool, as does lzc_snapshot (below).
4005289500Smav	 */
4006307108Smav	char pool[ZFS_MAX_DATASET_NAME_LEN];
4007289500Smav	elem = nvlist_next_nvpair(snaps, NULL);
4008289500Smav	(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
4009289500Smav	pool[strcspn(pool, "/@")] = '\0';
4010289500Smav	zpool_handle_t *zpool_hdl = zpool_open(hdl, pool);
4011289500Smav
4012248571Smm	if (props != NULL &&
4013248571Smm	    (props = zfs_valid_proplist(hdl, ZFS_TYPE_SNAPSHOT,
4014289500Smav	    props, B_FALSE, NULL, zpool_hdl, errbuf)) == NULL) {
4015289500Smav		zpool_close(zpool_hdl);
4016248571Smm		return (-1);
4017248571Smm	}
4018289500Smav	zpool_close(zpool_hdl);
4019248571Smm
4020248571Smm	ret = lzc_snapshot(snaps, props, &errors);
4021248571Smm
4022248571Smm	if (ret != 0) {
4023248571Smm		boolean_t printed = B_FALSE;
4024248571Smm		for (elem = nvlist_next_nvpair(errors, NULL);
4025248571Smm		    elem != NULL;
4026248571Smm		    elem = nvlist_next_nvpair(errors, elem)) {
4027248571Smm			(void) snprintf(errbuf, sizeof (errbuf),
4028248571Smm			    dgettext(TEXT_DOMAIN,
4029248571Smm			    "cannot create snapshot '%s'"), nvpair_name(elem));
4030248571Smm			(void) zfs_standard_error(hdl,
4031248571Smm			    fnvpair_value_int32(elem), errbuf);
4032248571Smm			printed = B_TRUE;
4033185029Spjd		}
4034248571Smm		if (!printed) {
4035248571Smm			switch (ret) {
4036248571Smm			case EXDEV:
4037248571Smm				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4038248571Smm				    "multiple snapshots of same "
4039248571Smm				    "fs not allowed"));
4040248571Smm				(void) zfs_error(hdl, EZFS_EXISTS, errbuf);
4041185029Spjd
4042248571Smm				break;
4043248571Smm			default:
4044248571Smm				(void) zfs_standard_error(hdl, ret, errbuf);
4045248571Smm			}
4046248571Smm		}
4047185029Spjd	}
4048185029Spjd
4049248571Smm	nvlist_free(props);
4050248571Smm	nvlist_free(errors);
4051248571Smm	return (ret);
4052248571Smm}
4053168404Spjd
4054248571Smmint
4055248571Smmzfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive,
4056248571Smm    nvlist_t *props)
4057248571Smm{
4058248571Smm	int ret;
4059248571Smm	snapdata_t sd = { 0 };
4060307108Smav	char fsname[ZFS_MAX_DATASET_NAME_LEN];
4061248571Smm	char *cp;
4062248571Smm	zfs_handle_t *zhp;
4063248571Smm	char errbuf[1024];
4064248571Smm
4065248571Smm	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
4066248571Smm	    "cannot snapshot %s"), path);
4067248571Smm
4068248571Smm	if (!zfs_validate_name(hdl, path, ZFS_TYPE_SNAPSHOT, B_TRUE))
4069248571Smm		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
4070248571Smm
4071248571Smm	(void) strlcpy(fsname, path, sizeof (fsname));
4072248571Smm	cp = strchr(fsname, '@');
4073248571Smm	*cp = '\0';
4074248571Smm	sd.sd_snapname = cp + 1;
4075248571Smm
4076248571Smm	if ((zhp = zfs_open(hdl, fsname, ZFS_TYPE_FILESYSTEM |
4077168404Spjd	    ZFS_TYPE_VOLUME)) == NULL) {
4078168404Spjd		return (-1);
4079168404Spjd	}
4080168404Spjd
4081248571Smm	verify(nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) == 0);
4082248571Smm	if (recursive) {
4083248571Smm		(void) zfs_snapshot_cb(zfs_handle_dup(zhp), &sd);
4084248571Smm	} else {
4085248571Smm		fnvlist_add_boolean(sd.sd_nvl, path);
4086168404Spjd	}
4087168404Spjd
4088248571Smm	ret = zfs_snapshot_nvl(hdl, sd.sd_nvl, props);
4089248571Smm	nvlist_free(sd.sd_nvl);
4090168404Spjd	zfs_close(zhp);
4091168404Spjd	return (ret);
4092168404Spjd}
4093168404Spjd
4094168404Spjd/*
4095168404Spjd * Destroy any more recent snapshots.  We invoke this callback on any dependents
4096168404Spjd * of the snapshot first.  If the 'cb_dependent' member is non-zero, then this
4097168404Spjd * is a dependent and we should just destroy it without checking the transaction
4098168404Spjd * group.
4099168404Spjd */
4100168404Spjdtypedef struct rollback_data {
4101168404Spjd	const char	*cb_target;		/* the snapshot */
4102168404Spjd	uint64_t	cb_create;		/* creation time reference */
4103185029Spjd	boolean_t	cb_error;
4104185029Spjd	boolean_t	cb_force;
4105168404Spjd} rollback_data_t;
4106168404Spjd
4107168404Spjdstatic int
4108260183Sdelphijrollback_destroy_dependent(zfs_handle_t *zhp, void *data)
4109168404Spjd{
4110168404Spjd	rollback_data_t *cbp = data;
4111260183Sdelphij	prop_changelist_t *clp;
4112168404Spjd
4113260183Sdelphij	/* We must destroy this clone; first unmount it */
4114260183Sdelphij	clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
4115260183Sdelphij	    cbp->cb_force ? MS_FORCE: 0);
4116260183Sdelphij	if (clp == NULL || changelist_prefix(clp) != 0) {
4117260183Sdelphij		cbp->cb_error = B_TRUE;
4118260183Sdelphij		zfs_close(zhp);
4119260183Sdelphij		return (0);
4120260183Sdelphij	}
4121260183Sdelphij	if (zfs_destroy(zhp, B_FALSE) != 0)
4122260183Sdelphij		cbp->cb_error = B_TRUE;
4123260183Sdelphij	else
4124260183Sdelphij		changelist_remove(clp, zhp->zfs_name);
4125260183Sdelphij	(void) changelist_postfix(clp);
4126260183Sdelphij	changelist_free(clp);
4127168404Spjd
4128260183Sdelphij	zfs_close(zhp);
4129260183Sdelphij	return (0);
4130260183Sdelphij}
4131168404Spjd
4132260183Sdelphijstatic int
4133260183Sdelphijrollback_destroy(zfs_handle_t *zhp, void *data)
4134260183Sdelphij{
4135260183Sdelphij	rollback_data_t *cbp = data;
4136185029Spjd
4137260183Sdelphij	if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
4138260183Sdelphij		cbp->cb_error |= zfs_iter_dependents(zhp, B_FALSE,
4139260183Sdelphij		    rollback_destroy_dependent, cbp);
4140260183Sdelphij
4141260183Sdelphij		cbp->cb_error |= zfs_destroy(zhp, B_FALSE);
4142168404Spjd	}
4143168404Spjd
4144168404Spjd	zfs_close(zhp);
4145168404Spjd	return (0);
4146168404Spjd}
4147168404Spjd
4148168404Spjd/*
4149168404Spjd * Given a dataset, rollback to a specific snapshot, discarding any
4150168404Spjd * data changes since then and making it the active dataset.
4151168404Spjd *
4152260183Sdelphij * Any snapshots and bookmarks more recent than the target are
4153260183Sdelphij * destroyed, along with their dependents (i.e. clones).
4154168404Spjd */
4155168404Spjdint
4156185029Spjdzfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force)
4157168404Spjd{
4158168404Spjd	rollback_data_t cb = { 0 };
4159185029Spjd	int err;
4160185029Spjd	boolean_t restore_resv = 0;
4161307107Smav	uint64_t old_volsize = 0, new_volsize;
4162185029Spjd	zfs_prop_t resv_prop;
4163168404Spjd
4164185029Spjd	assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM ||
4165185029Spjd	    zhp->zfs_type == ZFS_TYPE_VOLUME);
4166168404Spjd
4167168404Spjd	/*
4168239774Smm	 * Destroy all recent snapshots and their dependents.
4169168404Spjd	 */
4170185029Spjd	cb.cb_force = force;
4171168404Spjd	cb.cb_target = snap->zfs_name;
4172168404Spjd	cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
4173260183Sdelphij	(void) zfs_iter_snapshots(zhp, B_FALSE, rollback_destroy, &cb);
4174260183Sdelphij	(void) zfs_iter_bookmarks(zhp, rollback_destroy, &cb);
4175168404Spjd
4176185029Spjd	if (cb.cb_error)
4177185029Spjd		return (-1);
4178168404Spjd
4179168404Spjd	/*
4180168404Spjd	 * Now that we have verified that the snapshot is the latest,
4181168404Spjd	 * rollback to the given snapshot.
4182168404Spjd	 */
4183168404Spjd
4184185029Spjd	if (zhp->zfs_type == ZFS_TYPE_VOLUME) {
4185185029Spjd		if (zfs_which_resv_prop(zhp, &resv_prop) < 0)
4186185029Spjd			return (-1);
4187185029Spjd		old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
4188185029Spjd		restore_resv =
4189185029Spjd		    (old_volsize == zfs_prop_get_int(zhp, resv_prop));
4190168404Spjd	}
4191168404Spjd
4192168404Spjd	/*
4193323757Savg	 * Pass both the filesystem and the wanted snapshot names,
4194323757Savg	 * we would get an error back if the snapshot is destroyed or
4195323757Savg	 * a new snapshot is created before this request is processed.
4196168404Spjd	 */
4197323757Savg	err = lzc_rollback_to(zhp->zfs_name, snap->zfs_name);
4198330590Savg	if (err != 0) {
4199330590Savg		char errbuf[1024];
4200330590Savg
4201330590Savg		(void) snprintf(errbuf, sizeof (errbuf),
4202323757Savg		    dgettext(TEXT_DOMAIN, "cannot rollback '%s'"),
4203323757Savg		    zhp->zfs_name);
4204330590Savg		switch (err) {
4205330590Savg		case EEXIST:
4206330590Savg			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
4207330590Savg			    "there is a snapshot or bookmark more recent "
4208330590Savg			    "than '%s'"), snap->zfs_name);
4209330590Savg			(void) zfs_error(zhp->zfs_hdl, EZFS_EXISTS, errbuf);
4210330590Savg			break;
4211330590Savg		case ESRCH:
4212330590Savg			zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN,
4213330590Savg			    "'%s' is not found among snapshots of '%s'"),
4214330590Savg			    snap->zfs_name, zhp->zfs_name);
4215330590Savg			(void) zfs_error(zhp->zfs_hdl, EZFS_NOENT, errbuf);
4216330590Savg			break;
4217330590Savg		case EINVAL:
4218330590Savg			(void) zfs_error(zhp->zfs_hdl, EZFS_BADTYPE, errbuf);
4219330590Savg			break;
4220330590Savg		default:
4221330590Savg			(void) zfs_standard_error(zhp->zfs_hdl, err, errbuf);
4222330590Savg		}
4223323757Savg		return (err);
4224185029Spjd	}
4225168404Spjd
4226185029Spjd	/*
4227185029Spjd	 * For volumes, if the pre-rollback volsize matched the pre-
4228185029Spjd	 * rollback reservation and the volsize has changed then set
4229185029Spjd	 * the reservation property to the post-rollback volsize.
4230185029Spjd	 * Make a new handle since the rollback closed the dataset.
4231185029Spjd	 */
4232185029Spjd	if ((zhp->zfs_type == ZFS_TYPE_VOLUME) &&
4233185029Spjd	    (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) {
4234185029Spjd		if (restore_resv) {
4235185029Spjd			new_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE);
4236185029Spjd			if (old_volsize != new_volsize)
4237185029Spjd				err = zfs_prop_set_int(zhp, resv_prop,
4238185029Spjd				    new_volsize);
4239185029Spjd		}
4240185029Spjd		zfs_close(zhp);
4241185029Spjd	}
4242185029Spjd	return (err);
4243168404Spjd}
4244168404Spjd
4245168404Spjd/*
4246168404Spjd * Renames the given dataset.
4247168404Spjd */
4248168404Spjdint
4249240870Spjdzfs_rename(zfs_handle_t *zhp, const char *source, const char *target,
4250240870Spjd    renameflags_t flags)
4251168404Spjd{
4252307050Smav	int ret = 0;
4253168404Spjd	zfs_cmd_t zc = { 0 };
4254168404Spjd	char *delim;
4255168676Spjd	prop_changelist_t *cl = NULL;
4256168676Spjd	zfs_handle_t *zhrp = NULL;
4257168676Spjd	char *parentname = NULL;
4258307108Smav	char parent[ZFS_MAX_DATASET_NAME_LEN];
4259226676Spjd	char property[ZFS_MAXPROPLEN];
4260168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
4261168404Spjd	char errbuf[1024];
4262168404Spjd
4263168404Spjd	/* if we have the same exact name, just return success */
4264168404Spjd	if (strcmp(zhp->zfs_name, target) == 0)
4265168404Spjd		return (0);
4266168404Spjd
4267168404Spjd	(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
4268168404Spjd	    "cannot rename to '%s'"), target);
4269168404Spjd
4270240870Spjd	if (source != NULL) {
4271240870Spjd		/*
4272240870Spjd		 * This is recursive snapshots rename, put snapshot name
4273240870Spjd		 * (that might not exist) into zfs_name.
4274240870Spjd		 */
4275240870Spjd		assert(flags.recurse);
4276240870Spjd
4277240870Spjd		(void) strlcat(zhp->zfs_name, "@", sizeof(zhp->zfs_name));
4278240870Spjd		(void) strlcat(zhp->zfs_name, source, sizeof(zhp->zfs_name));
4279240870Spjd		zhp->zfs_type = ZFS_TYPE_SNAPSHOT;
4280240870Spjd	}
4281240870Spjd
4282332535Smav	/* make sure source name is valid */
4283332535Smav	if (!zfs_validate_name(hdl, zhp->zfs_name, zhp->zfs_type, B_TRUE))
4284332535Smav		return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
4285332535Smav
4286168404Spjd	/*
4287168404Spjd	 * Make sure the target name is valid
4288168404Spjd	 */
4289168404Spjd	if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
4290168404Spjd		if ((strchr(target, '@') == NULL) ||
4291168404Spjd		    *target == '@') {
4292168404Spjd			/*
4293168404Spjd			 * Snapshot target name is abbreviated,
4294168404Spjd			 * reconstruct full dataset name
4295168404Spjd			 */
4296168404Spjd			(void) strlcpy(parent, zhp->zfs_name,
4297168404Spjd			    sizeof (parent));
4298168404Spjd			delim = strchr(parent, '@');
4299168404Spjd			if (strchr(target, '@') == NULL)
4300168404Spjd				*(++delim) = '\0';
4301168404Spjd			else
4302168404Spjd				*delim = '\0';
4303168404Spjd			(void) strlcat(parent, target, sizeof (parent));
4304168404Spjd			target = parent;
4305168404Spjd		} else {
4306168404Spjd			/*
4307168404Spjd			 * Make sure we're renaming within the same dataset.
4308168404Spjd			 */
4309168404Spjd			delim = strchr(target, '@');
4310168404Spjd			if (strncmp(zhp->zfs_name, target, delim - target)
4311168404Spjd			    != 0 || zhp->zfs_name[delim - target] != '@') {
4312168404Spjd				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4313168404Spjd				    "snapshots must be part of same "
4314168404Spjd				    "dataset"));
4315168404Spjd				return (zfs_error(hdl, EZFS_CROSSTARGET,
4316168404Spjd				    errbuf));
4317168404Spjd			}
4318168404Spjd		}
4319339129Smav
4320185029Spjd		if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE))
4321168404Spjd			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
4322168404Spjd	} else {
4323226705Spjd		if (flags.recurse) {
4324168676Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4325168676Spjd			    "recursive rename must be a snapshot"));
4326168676Spjd			return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
4327168676Spjd		}
4328168676Spjd
4329185029Spjd		if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE))
4330168404Spjd			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
4331168404Spjd
4332168404Spjd		/* validate parents */
4333219089Spjd		if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0)
4334168404Spjd			return (-1);
4335168404Spjd
4336168404Spjd		/* make sure we're in the same pool */
4337168404Spjd		verify((delim = strchr(target, '/')) != NULL);
4338168404Spjd		if (strncmp(zhp->zfs_name, target, delim - target) != 0 ||
4339168404Spjd		    zhp->zfs_name[delim - target] != '/') {
4340168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4341168404Spjd			    "datasets must be within same pool"));
4342168404Spjd			return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf));
4343168404Spjd		}
4344168404Spjd
4345168404Spjd		/* new name cannot be a child of the current dataset name */
4346219089Spjd		if (is_descendant(zhp->zfs_name, target)) {
4347168404Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4348219089Spjd			    "New dataset name cannot be a descendant of "
4349168404Spjd			    "current dataset name"));
4350168404Spjd			return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf));
4351168404Spjd		}
4352168404Spjd	}
4353168404Spjd
4354168404Spjd	(void) snprintf(errbuf, sizeof (errbuf),
4355168404Spjd	    dgettext(TEXT_DOMAIN, "cannot rename '%s'"), zhp->zfs_name);
4356168404Spjd
4357168404Spjd	if (getzoneid() == GLOBAL_ZONEID &&
4358168404Spjd	    zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) {
4359168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4360168404Spjd		    "dataset is used in a non-global zone"));
4361168404Spjd		return (zfs_error(hdl, EZFS_ZONED, errbuf));
4362168404Spjd	}
4363168404Spjd
4364226705Spjd	/*
4365226705Spjd	 * Avoid unmounting file systems with mountpoint property set to
4366226705Spjd	 * 'legacy' or 'none' even if -u option is not given.
4367226705Spjd	 */
4368226705Spjd	if (zhp->zfs_type == ZFS_TYPE_FILESYSTEM &&
4369226705Spjd	    !flags.recurse && !flags.nounmount &&
4370226705Spjd	    zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, property,
4371226705Spjd	    sizeof (property), NULL, NULL, 0, B_FALSE) == 0 &&
4372226705Spjd	    (strcmp(property, "legacy") == 0 ||
4373226705Spjd	     strcmp(property, "none") == 0)) {
4374226705Spjd		flags.nounmount = B_TRUE;
4375226705Spjd	}
4376226705Spjd	if (flags.recurse) {
4377226705Spjd
4378185029Spjd		parentname = zfs_strdup(zhp->zfs_hdl, zhp->zfs_name);
4379185029Spjd		if (parentname == NULL) {
4380185029Spjd			ret = -1;
4381185029Spjd			goto error;
4382185029Spjd		}
4383168676Spjd		delim = strchr(parentname, '@');
4384168676Spjd		*delim = '\0';
4385185029Spjd		zhrp = zfs_open(zhp->zfs_hdl, parentname, ZFS_TYPE_DATASET);
4386168676Spjd		if (zhrp == NULL) {
4387185029Spjd			ret = -1;
4388185029Spjd			goto error;
4389168676Spjd		}
4390268469Sdelphij	} else if (zhp->zfs_type != ZFS_TYPE_SNAPSHOT) {
4391226676Spjd		if ((cl = changelist_gather(zhp, ZFS_PROP_NAME,
4392235216Smm		    flags.nounmount ? CL_GATHER_DONT_UNMOUNT : 0,
4393235216Smm		    flags.forceunmount ? MS_FORCE : 0)) == NULL) {
4394168676Spjd			return (-1);
4395226676Spjd		}
4396168676Spjd
4397168676Spjd		if (changelist_haszonedchild(cl)) {
4398168676Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4399168676Spjd			    "child dataset with inherited mountpoint is used "
4400168676Spjd			    "in a non-global zone"));
4401168676Spjd			(void) zfs_error(hdl, EZFS_ZONED, errbuf);
4402307107Smav			ret = -1;
4403168676Spjd			goto error;
4404168676Spjd		}
4405168676Spjd
4406168676Spjd		if ((ret = changelist_prefix(cl)) != 0)
4407168676Spjd			goto error;
4408168404Spjd	}
4409168404Spjd
4410168404Spjd	if (ZFS_IS_VOLUME(zhp))
4411168404Spjd		zc.zc_objset_type = DMU_OST_ZVOL;
4412168404Spjd	else
4413168404Spjd		zc.zc_objset_type = DMU_OST_ZFS;
4414168404Spjd
4415168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
4416168404Spjd	(void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value));
4417168404Spjd
4418226705Spjd	zc.zc_cookie = flags.recurse ? 1 : 0;
4419226705Spjd	if (flags.nounmount)
4420226676Spjd		zc.zc_cookie |= 2;
4421168676Spjd
4422185029Spjd	if ((ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_RENAME, &zc)) != 0) {
4423168676Spjd		/*
4424168676Spjd		 * if it was recursive, the one that actually failed will
4425168676Spjd		 * be in zc.zc_name
4426168676Spjd		 */
4427168676Spjd		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
4428185029Spjd		    "cannot rename '%s'"), zc.zc_name);
4429168404Spjd
4430226705Spjd		if (flags.recurse && errno == EEXIST) {
4431168676Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4432168676Spjd			    "a child dataset already has a snapshot "
4433168676Spjd			    "with the new name"));
4434185029Spjd			(void) zfs_error(hdl, EZFS_EXISTS, errbuf);
4435168676Spjd		} else {
4436168676Spjd			(void) zfs_standard_error(zhp->zfs_hdl, errno, errbuf);
4437168676Spjd		}
4438168676Spjd
4439168404Spjd		/*
4440168404Spjd		 * On failure, we still want to remount any filesystems that
4441168404Spjd		 * were previously mounted, so we don't alter the system state.
4442168404Spjd		 */
4443268469Sdelphij		if (cl != NULL)
4444168676Spjd			(void) changelist_postfix(cl);
4445168404Spjd	} else {
4446268469Sdelphij		if (cl != NULL) {
4447168676Spjd			changelist_rename(cl, zfs_get_name(zhp), target);
4448168676Spjd			ret = changelist_postfix(cl);
4449168676Spjd		}
4450168404Spjd	}
4451168404Spjd
4452168404Spjderror:
4453268469Sdelphij	if (parentname != NULL) {
4454168676Spjd		free(parentname);
4455168676Spjd	}
4456268469Sdelphij	if (zhrp != NULL) {
4457168676Spjd		zfs_close(zhrp);
4458168676Spjd	}
4459268469Sdelphij	if (cl != NULL) {
4460168676Spjd		changelist_free(cl);
4461168676Spjd	}
4462168404Spjd	return (ret);
4463168404Spjd}
4464168404Spjd
4465219089Spjdnvlist_t *
4466219089Spjdzfs_get_user_props(zfs_handle_t *zhp)
4467168404Spjd{
4468219089Spjd	return (zhp->zfs_user_props);
4469168676Spjd}
4470168676Spjd
4471168404Spjdnvlist_t *
4472219089Spjdzfs_get_recvd_props(zfs_handle_t *zhp)
4473168404Spjd{
4474219089Spjd	if (zhp->zfs_recvd_props == NULL)
4475219089Spjd		if (get_recvd_props_ioctl(zhp) != 0)
4476219089Spjd			return (NULL);
4477219089Spjd	return (zhp->zfs_recvd_props);
4478168404Spjd}
4479168404Spjd
4480168404Spjd/*
4481168404Spjd * This function is used by 'zfs list' to determine the exact set of columns to
4482168404Spjd * display, and their maximum widths.  This does two main things:
4483168404Spjd *
4484168404Spjd *      - If this is a list of all properties, then expand the list to include
4485168404Spjd *        all native properties, and set a flag so that for each dataset we look
4486168404Spjd *        for new unique user properties and add them to the list.
4487168404Spjd *
4488168404Spjd *      - For non fixed-width properties, keep track of the maximum width seen
4489219089Spjd *        so that we can size the column appropriately. If the user has
4490219089Spjd *        requested received property values, we also need to compute the width
4491219089Spjd *        of the RECEIVED column.
4492168404Spjd */
4493168404Spjdint
4494259850Sdelphijzfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received,
4495259850Sdelphij    boolean_t literal)
4496168404Spjd{
4497168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
4498185029Spjd	zprop_list_t *entry;
4499185029Spjd	zprop_list_t **last, **start;
4500168404Spjd	nvlist_t *userprops, *propval;
4501168404Spjd	nvpair_t *elem;
4502168404Spjd	char *strval;
4503168404Spjd	char buf[ZFS_MAXPROPLEN];
4504168404Spjd
4505185029Spjd	if (zprop_expand_list(hdl, plp, ZFS_TYPE_DATASET) != 0)
4506168404Spjd		return (-1);
4507168404Spjd
4508168404Spjd	userprops = zfs_get_user_props(zhp);
4509168404Spjd
4510168404Spjd	entry = *plp;
4511168404Spjd	if (entry->pl_all && nvlist_next_nvpair(userprops, NULL) != NULL) {
4512168404Spjd		/*
4513168404Spjd		 * Go through and add any user properties as necessary.  We
4514168404Spjd		 * start by incrementing our list pointer to the first
4515168404Spjd		 * non-native property.
4516168404Spjd		 */
4517168404Spjd		start = plp;
4518168404Spjd		while (*start != NULL) {
4519185029Spjd			if ((*start)->pl_prop == ZPROP_INVAL)
4520168404Spjd				break;
4521168404Spjd			start = &(*start)->pl_next;
4522168404Spjd		}
4523168404Spjd
4524168404Spjd		elem = NULL;
4525168404Spjd		while ((elem = nvlist_next_nvpair(userprops, elem)) != NULL) {
4526168404Spjd			/*
4527168404Spjd			 * See if we've already found this property in our list.
4528168404Spjd			 */
4529168404Spjd			for (last = start; *last != NULL;
4530168404Spjd			    last = &(*last)->pl_next) {
4531168404Spjd				if (strcmp((*last)->pl_user_prop,
4532168404Spjd				    nvpair_name(elem)) == 0)
4533168404Spjd					break;
4534168404Spjd			}
4535168404Spjd
4536168404Spjd			if (*last == NULL) {
4537168404Spjd				if ((entry = zfs_alloc(hdl,
4538185029Spjd				    sizeof (zprop_list_t))) == NULL ||
4539168404Spjd				    ((entry->pl_user_prop = zfs_strdup(hdl,
4540168404Spjd				    nvpair_name(elem)))) == NULL) {
4541168404Spjd					free(entry);
4542168404Spjd					return (-1);
4543168404Spjd				}
4544168404Spjd
4545185029Spjd				entry->pl_prop = ZPROP_INVAL;
4546168404Spjd				entry->pl_width = strlen(nvpair_name(elem));
4547168404Spjd				entry->pl_all = B_TRUE;
4548168404Spjd				*last = entry;
4549168404Spjd			}
4550168404Spjd		}
4551168404Spjd	}
4552168404Spjd
4553168404Spjd	/*
4554168404Spjd	 * Now go through and check the width of any non-fixed columns
4555168404Spjd	 */
4556168404Spjd	for (entry = *plp; entry != NULL; entry = entry->pl_next) {
4557259850Sdelphij		if (entry->pl_fixed && !literal)
4558168404Spjd			continue;
4559168404Spjd
4560185029Spjd		if (entry->pl_prop != ZPROP_INVAL) {
4561168404Spjd			if (zfs_prop_get(zhp, entry->pl_prop,
4562259850Sdelphij			    buf, sizeof (buf), NULL, NULL, 0, literal) == 0) {
4563168404Spjd				if (strlen(buf) > entry->pl_width)
4564168404Spjd					entry->pl_width = strlen(buf);
4565168404Spjd			}
4566219089Spjd			if (received && zfs_prop_get_recvd(zhp,
4567219089Spjd			    zfs_prop_to_name(entry->pl_prop),
4568259850Sdelphij			    buf, sizeof (buf), literal) == 0)
4569219089Spjd				if (strlen(buf) > entry->pl_recvd_width)
4570219089Spjd					entry->pl_recvd_width = strlen(buf);
4571219089Spjd		} else {
4572219089Spjd			if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop,
4573219089Spjd			    &propval) == 0) {
4574219089Spjd				verify(nvlist_lookup_string(propval,
4575219089Spjd				    ZPROP_VALUE, &strval) == 0);
4576219089Spjd				if (strlen(strval) > entry->pl_width)
4577219089Spjd					entry->pl_width = strlen(strval);
4578219089Spjd			}
4579219089Spjd			if (received && zfs_prop_get_recvd(zhp,
4580219089Spjd			    entry->pl_user_prop,
4581259850Sdelphij			    buf, sizeof (buf), literal) == 0)
4582219089Spjd				if (strlen(buf) > entry->pl_recvd_width)
4583219089Spjd					entry->pl_recvd_width = strlen(buf);
4584168404Spjd		}
4585168404Spjd	}
4586168404Spjd
4587168404Spjd	return (0);
4588168404Spjd}
4589168404Spjd
4590185029Spjdint
4591185029Spjdzfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path,
4592209962Smm    char *resource, void *export, void *sharetab,
4593209962Smm    int sharemax, zfs_share_op_t operation)
4594185029Spjd{
4595185029Spjd	zfs_cmd_t zc = { 0 };
4596185029Spjd	int error;
4597185029Spjd
4598185029Spjd	(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
4599185029Spjd	(void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value));
4600209962Smm	if (resource)
4601209962Smm		(void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string));
4602185029Spjd	zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab;
4603185029Spjd	zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export;
4604185029Spjd	zc.zc_share.z_sharetype = operation;
4605185029Spjd	zc.zc_share.z_sharemax = sharemax;
4606185029Spjd	error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc);
4607185029Spjd	return (error);
4608185029Spjd}
4609185029Spjd
4610205198Sdelphijvoid
4611205198Sdelphijzfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props)
4612205198Sdelphij{
4613205198Sdelphij	nvpair_t *curr;
4614205198Sdelphij
4615205198Sdelphij	/*
4616205198Sdelphij	 * Keep a reference to the props-table against which we prune the
4617205198Sdelphij	 * properties.
4618205198Sdelphij	 */
4619205198Sdelphij	zhp->zfs_props_table = props;
4620205198Sdelphij
4621205198Sdelphij	curr = nvlist_next_nvpair(zhp->zfs_props, NULL);
4622205198Sdelphij
4623205198Sdelphij	while (curr) {
4624205198Sdelphij		zfs_prop_t zfs_prop = zfs_name_to_prop(nvpair_name(curr));
4625205198Sdelphij		nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr);
4626205198Sdelphij
4627206199Sdelphij		/*
4628219089Spjd		 * User properties will result in ZPROP_INVAL, and since we
4629219089Spjd		 * only know how to prune standard ZFS properties, we always
4630219089Spjd		 * leave these in the list.  This can also happen if we
4631219089Spjd		 * encounter an unknown DSL property (when running older
4632219089Spjd		 * software, for example).
4633206199Sdelphij		 */
4634206199Sdelphij		if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE)
4635205198Sdelphij			(void) nvlist_remove(zhp->zfs_props,
4636205198Sdelphij			    nvpair_name(curr), nvpair_type(curr));
4637205198Sdelphij		curr = next;
4638205198Sdelphij	}
4639205198Sdelphij}
4640205198Sdelphij
4641277300Ssmh#ifdef illumos
4642209962Smmstatic int
4643209962Smmzfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path,
4644209962Smm    zfs_smb_acl_op_t cmd, char *resource1, char *resource2)
4645209962Smm{
4646209962Smm	zfs_cmd_t zc = { 0 };
4647209962Smm	nvlist_t *nvlist = NULL;
4648209962Smm	int error;
4649209962Smm
4650209962Smm	(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
4651209962Smm	(void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value));
4652209962Smm	zc.zc_cookie = (uint64_t)cmd;
4653209962Smm
4654209962Smm	if (cmd == ZFS_SMB_ACL_RENAME) {
4655209962Smm		if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) {
4656209962Smm			(void) no_memory(hdl);
4657289497Smav			return (0);
4658209962Smm		}
4659209962Smm	}
4660209962Smm
4661209962Smm	switch (cmd) {
4662209962Smm	case ZFS_SMB_ACL_ADD:
4663209962Smm	case ZFS_SMB_ACL_REMOVE:
4664209962Smm		(void) strlcpy(zc.zc_string, resource1, sizeof (zc.zc_string));
4665209962Smm		break;
4666209962Smm	case ZFS_SMB_ACL_RENAME:
4667209962Smm		if (nvlist_add_string(nvlist, ZFS_SMB_ACL_SRC,
4668209962Smm		    resource1) != 0) {
4669209962Smm				(void) no_memory(hdl);
4670209962Smm				return (-1);
4671209962Smm		}
4672209962Smm		if (nvlist_add_string(nvlist, ZFS_SMB_ACL_TARGET,
4673209962Smm		    resource2) != 0) {
4674209962Smm				(void) no_memory(hdl);
4675209962Smm				return (-1);
4676209962Smm		}
4677209962Smm		if (zcmd_write_src_nvlist(hdl, &zc, nvlist) != 0) {
4678209962Smm			nvlist_free(nvlist);
4679209962Smm			return (-1);
4680209962Smm		}
4681209962Smm		break;
4682209962Smm	case ZFS_SMB_ACL_PURGE:
4683209962Smm		break;
4684209962Smm	default:
4685209962Smm		return (-1);
4686209962Smm	}
4687209962Smm	error = ioctl(hdl->libzfs_fd, ZFS_IOC_SMB_ACL, &zc);
4688296528Smav	nvlist_free(nvlist);
4689209962Smm	return (error);
4690209962Smm}
4691209962Smm
4692209962Smmint
4693209962Smmzfs_smb_acl_add(libzfs_handle_t *hdl, char *dataset,
4694209962Smm    char *path, char *resource)
4695209962Smm{
4696209962Smm	return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_ADD,
4697209962Smm	    resource, NULL));
4698209962Smm}
4699209962Smm
4700209962Smmint
4701209962Smmzfs_smb_acl_remove(libzfs_handle_t *hdl, char *dataset,
4702209962Smm    char *path, char *resource)
4703209962Smm{
4704209962Smm	return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_REMOVE,
4705209962Smm	    resource, NULL));
4706209962Smm}
4707209962Smm
4708209962Smmint
4709209962Smmzfs_smb_acl_purge(libzfs_handle_t *hdl, char *dataset, char *path)
4710209962Smm{
4711209962Smm	return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_PURGE,
4712209962Smm	    NULL, NULL));
4713209962Smm}
4714209962Smm
4715209962Smmint
4716209962Smmzfs_smb_acl_rename(libzfs_handle_t *hdl, char *dataset, char *path,
4717209962Smm    char *oldname, char *newname)
4718209962Smm{
4719209962Smm	return (zfs_smb_acl_mgmt(hdl, dataset, path, ZFS_SMB_ACL_RENAME,
4720209962Smm	    oldname, newname));
4721209962Smm}
4722277300Ssmh#endif	/* illumos */
4723209962Smm
4724209962Smmint
4725209962Smmzfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type,
4726209962Smm    zfs_userspace_cb_t func, void *arg)
4727209962Smm{
4728209962Smm	zfs_cmd_t zc = { 0 };
4729209962Smm	zfs_useracct_t buf[100];
4730240415Smm	libzfs_handle_t *hdl = zhp->zfs_hdl;
4731240415Smm	int ret;
4732209962Smm
4733228103Smm	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
4734209962Smm
4735209962Smm	zc.zc_objset_type = type;
4736209962Smm	zc.zc_nvlist_dst = (uintptr_t)buf;
4737209962Smm
4738240415Smm	for (;;) {
4739209962Smm		zfs_useracct_t *zua = buf;
4740209962Smm
4741209962Smm		zc.zc_nvlist_dst_size = sizeof (buf);
4742240415Smm		if (zfs_ioctl(hdl, ZFS_IOC_USERSPACE_MANY, &zc) != 0) {
4743248571Smm			char errbuf[1024];
4744240415Smm
4745240415Smm			(void) snprintf(errbuf, sizeof (errbuf),
4746240415Smm			    dgettext(TEXT_DOMAIN,
4747240415Smm			    "cannot get used/quota for %s"), zc.zc_name);
4748240415Smm			return (zfs_standard_error_fmt(hdl, errno, errbuf));
4749240415Smm		}
4750240415Smm		if (zc.zc_nvlist_dst_size == 0)
4751209962Smm			break;
4752209962Smm
4753209962Smm		while (zc.zc_nvlist_dst_size > 0) {
4754240415Smm			if ((ret = func(arg, zua->zu_domain, zua->zu_rid,
4755240415Smm			    zua->zu_space)) != 0)
4756240415Smm				return (ret);
4757209962Smm			zua++;
4758209962Smm			zc.zc_nvlist_dst_size -= sizeof (zfs_useracct_t);
4759209962Smm		}
4760209962Smm	}
4761209962Smm
4762240415Smm	return (0);
4763209962Smm}
4764209962Smm
4765248571Smmstruct holdarg {
4766248571Smm	nvlist_t *nvl;
4767248571Smm	const char *snapname;
4768248571Smm	const char *tag;
4769248571Smm	boolean_t recursive;
4770252219Sdelphij	int error;
4771248571Smm};
4772248571Smm
4773248571Smmstatic int
4774248571Smmzfs_hold_one(zfs_handle_t *zhp, void *arg)
4775248571Smm{
4776248571Smm	struct holdarg *ha = arg;
4777307108Smav	char name[ZFS_MAX_DATASET_NAME_LEN];
4778248571Smm	int rv = 0;
4779248571Smm
4780248571Smm	(void) snprintf(name, sizeof (name),
4781248571Smm	    "%s@%s", zhp->zfs_name, ha->snapname);
4782248571Smm
4783251646Sdelphij	if (lzc_exists(name))
4784248571Smm		fnvlist_add_string(ha->nvl, name, ha->tag);
4785248571Smm
4786248571Smm	if (ha->recursive)
4787248571Smm		rv = zfs_iter_filesystems(zhp, zfs_hold_one, ha);
4788248571Smm	zfs_close(zhp);
4789248571Smm	return (rv);
4790248571Smm}
4791248571Smm
4792219089Spjdint
4793219089Spjdzfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag,
4794251646Sdelphij    boolean_t recursive, int cleanup_fd)
4795219089Spjd{
4796248571Smm	int ret;
4797248571Smm	struct holdarg ha;
4798219089Spjd
4799248571Smm	ha.nvl = fnvlist_alloc();
4800248571Smm	ha.snapname = snapname;
4801248571Smm	ha.tag = tag;
4802248571Smm	ha.recursive = recursive;
4803248571Smm	(void) zfs_hold_one(zfs_handle_dup(zhp), &ha);
4804249357Smm
4805251646Sdelphij	if (nvlist_empty(ha.nvl)) {
4806251646Sdelphij		char errbuf[1024];
4807251646Sdelphij
4808249357Smm		fnvlist_free(ha.nvl);
4809249357Smm		ret = ENOENT;
4810251646Sdelphij		(void) snprintf(errbuf, sizeof (errbuf),
4811251646Sdelphij		    dgettext(TEXT_DOMAIN,
4812251646Sdelphij		    "cannot hold snapshot '%s@%s'"),
4813251646Sdelphij		    zhp->zfs_name, snapname);
4814251646Sdelphij		(void) zfs_standard_error(zhp->zfs_hdl, ret, errbuf);
4815249357Smm		return (ret);
4816249357Smm	}
4817249357Smm
4818251646Sdelphij	ret = zfs_hold_nvl(zhp, cleanup_fd, ha.nvl);
4819248571Smm	fnvlist_free(ha.nvl);
4820219089Spjd
4821251646Sdelphij	return (ret);
4822251646Sdelphij}
4823251646Sdelphij
4824251646Sdelphijint
4825251646Sdelphijzfs_hold_nvl(zfs_handle_t *zhp, int cleanup_fd, nvlist_t *holds)
4826251646Sdelphij{
4827251646Sdelphij	int ret;
4828251646Sdelphij	nvlist_t *errors;
4829251646Sdelphij	libzfs_handle_t *hdl = zhp->zfs_hdl;
4830251646Sdelphij	char errbuf[1024];
4831251646Sdelphij	nvpair_t *elem;
4832251646Sdelphij
4833251646Sdelphij	errors = NULL;
4834251646Sdelphij	ret = lzc_hold(holds, cleanup_fd, &errors);
4835251646Sdelphij
4836251646Sdelphij	if (ret == 0) {
4837251646Sdelphij		/* There may be errors even in the success case. */
4838251646Sdelphij		fnvlist_free(errors);
4839248571Smm		return (0);
4840251646Sdelphij	}
4841219089Spjd
4842251646Sdelphij	if (nvlist_empty(errors)) {
4843248571Smm		/* no hold-specific errors */
4844248571Smm		(void) snprintf(errbuf, sizeof (errbuf),
4845248571Smm		    dgettext(TEXT_DOMAIN, "cannot hold"));
4846248571Smm		switch (ret) {
4847248571Smm		case ENOTSUP:
4848248571Smm			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4849248571Smm			    "pool must be upgraded"));
4850248571Smm			(void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
4851248571Smm			break;
4852248571Smm		case EINVAL:
4853248571Smm			(void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
4854248571Smm			break;
4855248571Smm		default:
4856248571Smm			(void) zfs_standard_error(hdl, ret, errbuf);
4857248571Smm		}
4858248571Smm	}
4859219089Spjd
4860248571Smm	for (elem = nvlist_next_nvpair(errors, NULL);
4861248571Smm	    elem != NULL;
4862248571Smm	    elem = nvlist_next_nvpair(errors, elem)) {
4863248571Smm		(void) snprintf(errbuf, sizeof (errbuf),
4864248571Smm		    dgettext(TEXT_DOMAIN,
4865248571Smm		    "cannot hold snapshot '%s'"), nvpair_name(elem));
4866248571Smm		switch (fnvpair_value_int32(elem)) {
4867219089Spjd		case E2BIG:
4868219089Spjd			/*
4869219089Spjd			 * Temporary tags wind up having the ds object id
4870219089Spjd			 * prepended. So even if we passed the length check
4871219089Spjd			 * above, it's still possible for the tag to wind
4872219089Spjd			 * up being slightly too long.
4873219089Spjd			 */
4874248571Smm			(void) zfs_error(hdl, EZFS_TAGTOOLONG, errbuf);
4875248571Smm			break;
4876219089Spjd		case EINVAL:
4877248571Smm			(void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
4878248571Smm			break;
4879219089Spjd		case EEXIST:
4880248571Smm			(void) zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf);
4881248571Smm			break;
4882219089Spjd		default:
4883248571Smm			(void) zfs_standard_error(hdl,
4884248571Smm			    fnvpair_value_int32(elem), errbuf);
4885219089Spjd		}
4886219089Spjd	}
4887219089Spjd
4888248571Smm	fnvlist_free(errors);
4889248571Smm	return (ret);
4890219089Spjd}
4891219089Spjd
4892248571Smmstatic int
4893248571Smmzfs_release_one(zfs_handle_t *zhp, void *arg)
4894248571Smm{
4895248571Smm	struct holdarg *ha = arg;
4896307108Smav	char name[ZFS_MAX_DATASET_NAME_LEN];
4897248571Smm	int rv = 0;
4898252219Sdelphij	nvlist_t *existing_holds;
4899248571Smm
4900248571Smm	(void) snprintf(name, sizeof (name),
4901248571Smm	    "%s@%s", zhp->zfs_name, ha->snapname);
4902248571Smm
4903252219Sdelphij	if (lzc_get_holds(name, &existing_holds) != 0) {
4904252219Sdelphij		ha->error = ENOENT;
4905252219Sdelphij	} else if (!nvlist_exists(existing_holds, ha->tag)) {
4906252219Sdelphij		ha->error = ESRCH;
4907252219Sdelphij	} else {
4908252219Sdelphij		nvlist_t *torelease = fnvlist_alloc();
4909252219Sdelphij		fnvlist_add_boolean(torelease, ha->tag);
4910252219Sdelphij		fnvlist_add_nvlist(ha->nvl, name, torelease);
4911252219Sdelphij		fnvlist_free(torelease);
4912248571Smm	}
4913248571Smm
4914248571Smm	if (ha->recursive)
4915248571Smm		rv = zfs_iter_filesystems(zhp, zfs_release_one, ha);
4916248571Smm	zfs_close(zhp);
4917248571Smm	return (rv);
4918248571Smm}
4919248571Smm
4920219089Spjdint
4921219089Spjdzfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag,
4922219089Spjd    boolean_t recursive)
4923219089Spjd{
4924248571Smm	int ret;
4925248571Smm	struct holdarg ha;
4926251646Sdelphij	nvlist_t *errors = NULL;
4927248571Smm	nvpair_t *elem;
4928219089Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
4929249357Smm	char errbuf[1024];
4930219089Spjd
4931248571Smm	ha.nvl = fnvlist_alloc();
4932248571Smm	ha.snapname = snapname;
4933248571Smm	ha.tag = tag;
4934248571Smm	ha.recursive = recursive;
4935252219Sdelphij	ha.error = 0;
4936248571Smm	(void) zfs_release_one(zfs_handle_dup(zhp), &ha);
4937249357Smm
4938251646Sdelphij	if (nvlist_empty(ha.nvl)) {
4939249357Smm		fnvlist_free(ha.nvl);
4940252219Sdelphij		ret = ha.error;
4941249357Smm		(void) snprintf(errbuf, sizeof (errbuf),
4942249357Smm		    dgettext(TEXT_DOMAIN,
4943249357Smm		    "cannot release hold from snapshot '%s@%s'"),
4944249357Smm		    zhp->zfs_name, snapname);
4945252219Sdelphij		if (ret == ESRCH) {
4946252219Sdelphij			(void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf);
4947252219Sdelphij		} else {
4948252219Sdelphij			(void) zfs_standard_error(hdl, ret, errbuf);
4949252219Sdelphij		}
4950249357Smm		return (ret);
4951249357Smm	}
4952249357Smm
4953248571Smm	ret = lzc_release(ha.nvl, &errors);
4954248571Smm	fnvlist_free(ha.nvl);
4955219089Spjd
4956251646Sdelphij	if (ret == 0) {
4957251646Sdelphij		/* There may be errors even in the success case. */
4958251646Sdelphij		fnvlist_free(errors);
4959248571Smm		return (0);
4960251646Sdelphij	}
4961219089Spjd
4962251646Sdelphij	if (nvlist_empty(errors)) {
4963248571Smm		/* no hold-specific errors */
4964219089Spjd		(void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN,
4965248571Smm		    "cannot release"));
4966219089Spjd		switch (errno) {
4967219089Spjd		case ENOTSUP:
4968219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
4969219089Spjd			    "pool must be upgraded"));
4970248571Smm			(void) zfs_error(hdl, EZFS_BADVERSION, errbuf);
4971248571Smm			break;
4972248571Smm		default:
4973248571Smm			(void) zfs_standard_error_fmt(hdl, errno, errbuf);
4974248571Smm		}
4975248571Smm	}
4976248571Smm
4977248571Smm	for (elem = nvlist_next_nvpair(errors, NULL);
4978248571Smm	    elem != NULL;
4979248571Smm	    elem = nvlist_next_nvpair(errors, elem)) {
4980248571Smm		(void) snprintf(errbuf, sizeof (errbuf),
4981248571Smm		    dgettext(TEXT_DOMAIN,
4982248571Smm		    "cannot release hold from snapshot '%s'"),
4983248571Smm		    nvpair_name(elem));
4984248571Smm		switch (fnvpair_value_int32(elem)) {
4985248571Smm		case ESRCH:
4986248571Smm			(void) zfs_error(hdl, EZFS_REFTAG_RELE, errbuf);
4987248571Smm			break;
4988219089Spjd		case EINVAL:
4989248571Smm			(void) zfs_error(hdl, EZFS_BADTYPE, errbuf);
4990248571Smm			break;
4991219089Spjd		default:
4992248571Smm			(void) zfs_standard_error_fmt(hdl,
4993248571Smm			    fnvpair_value_int32(elem), errbuf);
4994219089Spjd		}
4995219089Spjd	}
4996219089Spjd
4997248571Smm	fnvlist_free(errors);
4998248571Smm	return (ret);
4999219089Spjd}
5000219089Spjd
5001219089Spjdint
5002219089Spjdzfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl)
5003219089Spjd{
5004219089Spjd	zfs_cmd_t zc = { 0 };
5005219089Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
5006219089Spjd	int nvsz = 2048;
5007219089Spjd	void *nvbuf;
5008219089Spjd	int err = 0;
5009248571Smm	char errbuf[1024];
5010219089Spjd
5011219089Spjd	assert(zhp->zfs_type == ZFS_TYPE_VOLUME ||
5012219089Spjd	    zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
5013219089Spjd
5014219089Spjdtryagain:
5015219089Spjd
5016219089Spjd	nvbuf = malloc(nvsz);
5017219089Spjd	if (nvbuf == NULL) {
5018219089Spjd		err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno)));
5019219089Spjd		goto out;
5020219089Spjd	}
5021219089Spjd
5022219089Spjd	zc.zc_nvlist_dst_size = nvsz;
5023219089Spjd	zc.zc_nvlist_dst = (uintptr_t)nvbuf;
5024219089Spjd
5025307108Smav	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
5026219089Spjd
5027230514Smm	if (ioctl(hdl->libzfs_fd, ZFS_IOC_GET_FSACL, &zc) != 0) {
5028219089Spjd		(void) snprintf(errbuf, sizeof (errbuf),
5029219089Spjd		    dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"),
5030219089Spjd		    zc.zc_name);
5031219089Spjd		switch (errno) {
5032219089Spjd		case ENOMEM:
5033219089Spjd			free(nvbuf);
5034219089Spjd			nvsz = zc.zc_nvlist_dst_size;
5035219089Spjd			goto tryagain;
5036219089Spjd
5037219089Spjd		case ENOTSUP:
5038219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
5039219089Spjd			    "pool must be upgraded"));
5040219089Spjd			err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
5041219089Spjd			break;
5042219089Spjd		case EINVAL:
5043219089Spjd			err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
5044219089Spjd			break;
5045219089Spjd		case ENOENT:
5046219089Spjd			err = zfs_error(hdl, EZFS_NOENT, errbuf);
5047219089Spjd			break;
5048219089Spjd		default:
5049219089Spjd			err = zfs_standard_error_fmt(hdl, errno, errbuf);
5050219089Spjd			break;
5051219089Spjd		}
5052219089Spjd	} else {
5053219089Spjd		/* success */
5054219089Spjd		int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0);
5055219089Spjd		if (rc) {
5056219089Spjd			(void) snprintf(errbuf, sizeof (errbuf), dgettext(
5057219089Spjd			    TEXT_DOMAIN, "cannot get permissions on '%s'"),
5058219089Spjd			    zc.zc_name);
5059219089Spjd			err = zfs_standard_error_fmt(hdl, rc, errbuf);
5060219089Spjd		}
5061219089Spjd	}
5062219089Spjd
5063219089Spjd	free(nvbuf);
5064219089Spjdout:
5065219089Spjd	return (err);
5066219089Spjd}
5067219089Spjd
5068219089Spjdint
5069219089Spjdzfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl)
5070219089Spjd{
5071219089Spjd	zfs_cmd_t zc = { 0 };
5072219089Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
5073219089Spjd	char *nvbuf;
5074248571Smm	char errbuf[1024];
5075219089Spjd	size_t nvsz;
5076219089Spjd	int err;
5077219089Spjd
5078219089Spjd	assert(zhp->zfs_type == ZFS_TYPE_VOLUME ||
5079219089Spjd	    zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
5080219089Spjd
5081219089Spjd	err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE);
5082219089Spjd	assert(err == 0);
5083219089Spjd
5084219089Spjd	nvbuf = malloc(nvsz);
5085219089Spjd
5086219089Spjd	err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0);
5087219089Spjd	assert(err == 0);
5088219089Spjd
5089219089Spjd	zc.zc_nvlist_src_size = nvsz;
5090219089Spjd	zc.zc_nvlist_src = (uintptr_t)nvbuf;
5091219089Spjd	zc.zc_perm_action = un;
5092219089Spjd
5093219089Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
5094219089Spjd
5095219089Spjd	if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) {
5096219089Spjd		(void) snprintf(errbuf, sizeof (errbuf),
5097219089Spjd		    dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"),
5098219089Spjd		    zc.zc_name);
5099219089Spjd		switch (errno) {
5100219089Spjd		case ENOTSUP:
5101219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
5102219089Spjd			    "pool must be upgraded"));
5103219089Spjd			err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
5104219089Spjd			break;
5105219089Spjd		case EINVAL:
5106219089Spjd			err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
5107219089Spjd			break;
5108219089Spjd		case ENOENT:
5109219089Spjd			err = zfs_error(hdl, EZFS_NOENT, errbuf);
5110219089Spjd			break;
5111219089Spjd		default:
5112219089Spjd			err = zfs_standard_error_fmt(hdl, errno, errbuf);
5113219089Spjd			break;
5114219089Spjd		}
5115219089Spjd	}
5116219089Spjd
5117219089Spjd	free(nvbuf);
5118219089Spjd
5119219089Spjd	return (err);
5120219089Spjd}
5121219089Spjd
5122219089Spjdint
5123219089Spjdzfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl)
5124219089Spjd{
5125248571Smm	int err;
5126248571Smm	char errbuf[1024];
5127219089Spjd
5128248571Smm	err = lzc_get_holds(zhp->zfs_name, nvl);
5129219089Spjd
5130248571Smm	if (err != 0) {
5131248571Smm		libzfs_handle_t *hdl = zhp->zfs_hdl;
5132219089Spjd
5133219089Spjd		(void) snprintf(errbuf, sizeof (errbuf),
5134219089Spjd		    dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"),
5135248571Smm		    zhp->zfs_name);
5136248571Smm		switch (err) {
5137219089Spjd		case ENOTSUP:
5138219089Spjd			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
5139219089Spjd			    "pool must be upgraded"));
5140219089Spjd			err = zfs_error(hdl, EZFS_BADVERSION, errbuf);
5141219089Spjd			break;
5142219089Spjd		case EINVAL:
5143219089Spjd			err = zfs_error(hdl, EZFS_BADTYPE, errbuf);
5144219089Spjd			break;
5145219089Spjd		case ENOENT:
5146219089Spjd			err = zfs_error(hdl, EZFS_NOENT, errbuf);
5147219089Spjd			break;
5148219089Spjd		default:
5149219089Spjd			err = zfs_standard_error_fmt(hdl, errno, errbuf);
5150219089Spjd			break;
5151219089Spjd		}
5152219089Spjd	}
5153219089Spjd
5154219089Spjd	return (err);
5155219089Spjd}
5156219089Spjd
5157251629Sdelphij/*
5158251629Sdelphij * Convert the zvol's volume size to an appropriate reservation.
5159251629Sdelphij * Note: If this routine is updated, it is necessary to update the ZFS test
5160251629Sdelphij * suite's shell version in reservation.kshlib.
5161251629Sdelphij */
5162219089Spjduint64_t
5163219089Spjdzvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props)
5164219089Spjd{
5165219089Spjd	uint64_t numdb;
5166219089Spjd	uint64_t nblocks, volblocksize;
5167219089Spjd	int ncopies;
5168219089Spjd	char *strval;
5169219089Spjd
5170219089Spjd	if (nvlist_lookup_string(props,
5171219089Spjd	    zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0)
5172219089Spjd		ncopies = atoi(strval);
5173219089Spjd	else
5174219089Spjd		ncopies = 1;
5175219089Spjd	if (nvlist_lookup_uint64(props,
5176219089Spjd	    zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
5177219089Spjd	    &volblocksize) != 0)
5178219089Spjd		volblocksize = ZVOL_DEFAULT_BLOCKSIZE;
5179219089Spjd	nblocks = volsize/volblocksize;
5180219089Spjd	/* start with metadnode L0-L6 */
5181219089Spjd	numdb = 7;
5182219089Spjd	/* calculate number of indirects */
5183219089Spjd	while (nblocks > 1) {
5184219089Spjd		nblocks += DNODES_PER_LEVEL - 1;
5185219089Spjd		nblocks /= DNODES_PER_LEVEL;
5186219089Spjd		numdb += nblocks;
5187219089Spjd	}
5188219089Spjd	numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1);
5189219089Spjd	volsize *= ncopies;
5190219089Spjd	/*
5191219089Spjd	 * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't
5192219089Spjd	 * compressed, but in practice they compress down to about
5193219089Spjd	 * 1100 bytes
5194219089Spjd	 */
5195219089Spjd	numdb *= 1ULL << DN_MAX_INDBLKSHIFT;
5196219089Spjd	volsize += numdb;
5197219089Spjd	return (volsize);
5198219089Spjd}
5199219089Spjd
5200168404Spjd/*
5201168404Spjd * Attach/detach the given filesystem to/from the given jail.
5202168404Spjd */
5203168404Spjdint
5204168404Spjdzfs_jail(zfs_handle_t *zhp, int jailid, int attach)
5205168404Spjd{
5206168404Spjd	libzfs_handle_t *hdl = zhp->zfs_hdl;
5207168404Spjd	zfs_cmd_t zc = { 0 };
5208168404Spjd	char errbuf[1024];
5209224525Smm	unsigned long cmd;
5210224525Smm	int ret;
5211168404Spjd
5212168404Spjd	if (attach) {
5213168404Spjd		(void) snprintf(errbuf, sizeof (errbuf),
5214168404Spjd		    dgettext(TEXT_DOMAIN, "cannot jail '%s'"), zhp->zfs_name);
5215168404Spjd	} else {
5216168404Spjd		(void) snprintf(errbuf, sizeof (errbuf),
5217249547Spjd		    dgettext(TEXT_DOMAIN, "cannot unjail '%s'"), zhp->zfs_name);
5218168404Spjd	}
5219168404Spjd
5220168404Spjd	switch (zhp->zfs_type) {
5221168404Spjd	case ZFS_TYPE_VOLUME:
5222168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
5223168404Spjd		    "volumes can not be jailed"));
5224168404Spjd		return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
5225168404Spjd	case ZFS_TYPE_SNAPSHOT:
5226168404Spjd		zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
5227168404Spjd		    "snapshots can not be jailed"));
5228168404Spjd		return (zfs_error(hdl, EZFS_BADTYPE, errbuf));
5229168404Spjd	}
5230168404Spjd	assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM);
5231168404Spjd
5232168404Spjd	(void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name));
5233168404Spjd	zc.zc_objset_type = DMU_OST_ZFS;
5234168404Spjd	zc.zc_jailid = jailid;
5235168404Spjd
5236168404Spjd	cmd = attach ? ZFS_IOC_JAIL : ZFS_IOC_UNJAIL;
5237168404Spjd	if ((ret = ioctl(hdl->libzfs_fd, cmd, &zc)) != 0)
5238168404Spjd		zfs_standard_error(hdl, errno, errbuf);
5239168404Spjd
5240168404Spjd	return (ret);
5241168404Spjd}
5242