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[mirror_zfs.git] / module / zfs / zfs_ioctl.c
CommitLineData
34dc7c2f
BB		 1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
9ae529ec 21
34dc7c2f 22/*
428870ff 23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
b129c659 24 * Portions Copyright 2011 Martin Matuska
0cee2406 25 * Portions Copyright 2012 Pawel Jakub Dawidek <pawel@dawidek.net>
b129c659 26 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
3541dc6d 27 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
1bd201e7 28 * Copyright (c) 2012 by Delphix. All rights reserved.
37abac6d 29 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
3541dc6d 30 */
34dc7c2f 31
34dc7c2f
BB		 32#include <sys/types.h>
33#include <sys/param.h>
34#include <sys/errno.h>
35#include <sys/uio.h>
36#include <sys/buf.h>
37#include <sys/modctl.h>
38#include <sys/open.h>
39#include <sys/file.h>
40#include <sys/kmem.h>
41#include <sys/conf.h>
42#include <sys/cmn_err.h>
43#include <sys/stat.h>
44#include <sys/zfs_ioctl.h>
428870ff 45#include <sys/zfs_vfsops.h>
34dc7c2f
BB		 46#include <sys/zfs_znode.h>
47#include <sys/zap.h>
48#include <sys/spa.h>
49#include <sys/spa_impl.h>
50#include <sys/vdev.h>
428870ff 51#include <sys/priv_impl.h>
34dc7c2f
BB		 52#include <sys/dmu.h>
53#include <sys/dsl_dir.h>
54#include <sys/dsl_dataset.h>
55#include <sys/dsl_prop.h>
56#include <sys/dsl_deleg.h>
57#include <sys/dmu_objset.h>
37abac6d 58#include <sys/dmu_impl.h>
34dc7c2f
BB		 59#include <sys/ddi.h>
60#include <sys/sunddi.h>
61#include <sys/sunldi.h>
62#include <sys/policy.h>
63#include <sys/zone.h>
64#include <sys/nvpair.h>
65#include <sys/pathname.h>
66#include <sys/mount.h>
67#include <sys/sdt.h>
68#include <sys/fs/zfs.h>
ebe7e575 69#include <sys/zfs_ctldir.h>
34dc7c2f 70#include <sys/zfs_dir.h>
572e2857 71#include <sys/zfs_onexit.h>
34dc7c2f 72#include <sys/zvol.h>
428870ff 73#include <sys/dsl_scan.h>
34dc7c2f
BB		 74#include <sharefs/share.h>
75#include <sys/dmu_objset.h>
325f0235
BB		 76#include <sys/fm/util.h>
77
78#include <linux/miscdevice.h>
34dc7c2f
BB		 79
80#include "zfs_namecheck.h"
81#include "zfs_prop.h"
82#include "zfs_deleg.h"
428870ff 83#include "zfs_comutil.h"
34dc7c2f 84
325f0235
BB		 85kmutex_t zfsdev_state_lock;
86list_t zfsdev_state_list;
34dc7c2f
BB		 87
88extern void zfs_init(void);
89extern void zfs_fini(void);
90
34dc7c2f
BB		 91typedef int zfs_ioc_func_t(zfs_cmd_t *);
92typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *);
93
9babb374
BB		 94typedef enum {
95 NO_NAME,
96 POOL_NAME,
97 DATASET_NAME
98} zfs_ioc_namecheck_t;
99
572e2857
BB		 100typedef enum {
101 POOL_CHECK_NONE = 1 << 0,
102 POOL_CHECK_SUSPENDED = 1 << 1,
103 POOL_CHECK_READONLY = 1 << 2
104} zfs_ioc_poolcheck_t;
105
34dc7c2f
BB		 106typedef struct zfs_ioc_vec {
107 zfs_ioc_func_t *zvec_func;
108 zfs_secpolicy_func_t *zvec_secpolicy;
9babb374 109 zfs_ioc_namecheck_t zvec_namecheck;
34dc7c2f 110 boolean_t zvec_his_log;
572e2857 111 zfs_ioc_poolcheck_t zvec_pool_check;
34dc7c2f
BB		 112} zfs_ioc_vec_t;
113
9babb374
BB		 114/* This array is indexed by zfs_userquota_prop_t */
115static const char *userquota_perms[] = {
116 ZFS_DELEG_PERM_USERUSED,
117 ZFS_DELEG_PERM_USERQUOTA,
118 ZFS_DELEG_PERM_GROUPUSED,
119 ZFS_DELEG_PERM_GROUPQUOTA,
120};
121
122static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc);
428870ff
BB		 123static int zfs_check_settable(const char *name, nvpair_t *property,
124 cred_t *cr);
125static int zfs_check_clearable(char *dataset, nvlist_t *props,
126 nvlist_t **errors);
b128c09f
BB		 127static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *,
128 boolean_t *);
428870ff 129int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t **);
b128c09f 130
34dc7c2f
BB		 131static void
132history_str_free(char *buf)
133{
134 kmem_free(buf, HIS_MAX_RECORD_LEN);
135}
136
137static char *
138history_str_get(zfs_cmd_t *zc)
139{
140 char *buf;
141
b8864a23 142 if (zc->zc_history == 0)
34dc7c2f
BB		 143 return (NULL);
144
00b46022 145 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP | KM_NODEBUG);
34dc7c2f
BB		 146 if (copyinstr((void *)(uintptr_t)zc->zc_history,
147 buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
148 history_str_free(buf);
149 return (NULL);
150 }
151
152 buf[HIS_MAX_RECORD_LEN -1] = '\0';
153
154 return (buf);
155}
156
157/*
b128c09f
BB		 158 * Check to see if the named dataset is currently defined as bootable
159 */
160static boolean_t
161zfs_is_bootfs(const char *name)
162{
428870ff 163 objset_t *os;
b128c09f 164
428870ff
BB		 165 if (dmu_objset_hold(name, FTAG, &os) == 0) {
166 boolean_t ret;
167 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os)));
168 dmu_objset_rele(os, FTAG);
169 return (ret);
b128c09f 170 }
428870ff 171 return (B_FALSE);
b128c09f
BB		 172}
173
174/*
175 * zfs_earlier_version
34dc7c2f
BB		 176 *
177 * Return non-zero if the spa version is less than requested version.
178 */
179static int
b128c09f 180zfs_earlier_version(const char *name, int version)
34dc7c2f 181{
34dc7c2f
BB		 182 spa_t *spa;
183
184 if (spa_open(name, &spa, FTAG) == 0) {
185 if (spa_version(spa) < version) {
186 spa_close(spa, FTAG);
187 return (1);
188 }
189 spa_close(spa, FTAG);
190 }
191 return (0);
192}
193
194/*
b128c09f 195 * zpl_earlier_version
34dc7c2f 196 *
b128c09f 197 * Return TRUE if the ZPL version is less than requested version.
34dc7c2f 198 */
b128c09f
BB		 199static boolean_t
200zpl_earlier_version(const char *name, int version)
34dc7c2f
BB		 201{
202 objset_t *os;
b128c09f 203 boolean_t rc = B_TRUE;
34dc7c2f 204
428870ff 205 if (dmu_objset_hold(name, FTAG, &os) == 0) {
b128c09f 206 uint64_t zplversion;
34dc7c2f 207
428870ff
BB		 208 if (dmu_objset_type(os) != DMU_OST_ZFS) {
209 dmu_objset_rele(os, FTAG);
210 return (B_TRUE);
211 }
212 /* XXX reading from non-owned objset */
b128c09f
BB		 213 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0)
214 rc = zplversion < version;
428870ff 215 dmu_objset_rele(os, FTAG);
34dc7c2f
BB		 216 }
217 return (rc);
218}
219
220static void
221zfs_log_history(zfs_cmd_t *zc)
222{
223 spa_t *spa;
224 char *buf;
225
226 if ((buf = history_str_get(zc)) == NULL)
227 return;
228
229 if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
230 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
231 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL);
232 spa_close(spa, FTAG);
233 }
234 history_str_free(buf);
235}
236
237/*
238 * Policy for top-level read operations (list pools). Requires no privileges,
239 * and can be used in the local zone, as there is no associated dataset.
240 */
241/* ARGSUSED */
242static int
243zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr)
244{
245 return (0);
246}
247
248/*
249 * Policy for dataset read operations (list children, get statistics). Requires
250 * no privileges, but must be visible in the local zone.
251 */
252/* ARGSUSED */
253static int
254zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr)
255{
256 if (INGLOBALZONE(curproc) ||
257 zone_dataset_visible(zc->zc_name, NULL))
258 return (0);
259
260 return (ENOENT);
261}
262
263static int
572e2857 264zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr)
34dc7c2f 265{
34dc7c2f
BB		 266 int writable = 1;
267
268 /*
269 * The dataset must be visible by this zone -- check this first
270 * so they don't see EPERM on something they shouldn't know about.
271 */
272 if (!INGLOBALZONE(curproc) &&
273 !zone_dataset_visible(dataset, &writable))
274 return (ENOENT);
275
34dc7c2f
BB		 276 if (INGLOBALZONE(curproc)) {
277 /*
278 * If the fs is zoned, only root can access it from the
279 * global zone.
280 */
281 if (secpolicy_zfs(cr) && zoned)
282 return (EPERM);
283 } else {
284 /*
285 * If we are in a local zone, the 'zoned' property must be set.
286 */
287 if (!zoned)
288 return (EPERM);
289
290 /* must be writable by this zone */
291 if (!writable)
292 return (EPERM);
293 }
294 return (0);
295}
296
572e2857
BB		 297static int
298zfs_dozonecheck(const char *dataset, cred_t *cr)
299{
300 uint64_t zoned;
301
302 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
303 return (ENOENT);
304
305 return (zfs_dozonecheck_impl(dataset, zoned, cr));
306}
307
308static int
309zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr)
310{
311 uint64_t zoned;
312
313 rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER);
314 if (dsl_prop_get_ds(ds, "zoned", 8, 1, &zoned, NULL)) {
315 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
316 return (ENOENT);
317 }
318 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
319
320 return (zfs_dozonecheck_impl(dataset, zoned, cr));
321}
322
330d06f9
MA		 323/*
324 * If name ends in a '@', then require recursive permissions.
325 */
34dc7c2f
BB		 326int
327zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
328{
329 int error;
330d06f9
MA		 330 boolean_t descendent = B_FALSE;
331 dsl_dataset_t *ds;
332 char *at;
333
334 at = strchr(name, '@');
335 if (at != NULL && at[1] == '\0') {
336 *at = '\0';
337 descendent = B_TRUE;
338 }
339
340 error = dsl_dataset_hold(name, FTAG, &ds);
341 if (at != NULL)
342 *at = '@';
343 if (error != 0)
344 return (error);
34dc7c2f 345
330d06f9 346 error = zfs_dozonecheck_ds(name, ds, cr);
34dc7c2f
BB		 347 if (error == 0) {
348 error = secpolicy_zfs(cr);
349 if (error)
330d06f9 350 error = dsl_deleg_access_impl(ds, descendent, perm, cr);
34dc7c2f 351 }
330d06f9
MA		 352
353 dsl_dataset_rele(ds, FTAG);
34dc7c2f
BB		 354 return (error);
355}
356
572e2857
BB		 357int
358zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds,
359 const char *perm, cred_t *cr)
360{
361 int error;
362
363 error = zfs_dozonecheck_ds(name, ds, cr);
364 if (error == 0) {
365 error = secpolicy_zfs(cr);
366 if (error)
330d06f9 367 error = dsl_deleg_access_impl(ds, B_FALSE, perm, cr);
572e2857
BB		 368 }
369 return (error);
370}
371
428870ff
BB		 372/*
373 * Policy for setting the security label property.
374 *
375 * Returns 0 for success, non-zero for access and other errors.
376 */
34dc7c2f 377static int
428870ff 378zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr)
34dc7c2f 379{
d2c15e84 380#ifdef HAVE_MLSLABEL
428870ff
BB		 381 char ds_hexsl[MAXNAMELEN];
382 bslabel_t ds_sl, new_sl;
383 boolean_t new_default = FALSE;
384 uint64_t zoned;
385 int needed_priv = -1;
386 int error;
387
388 /* First get the existing dataset label. */
389 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL),
390 1, sizeof (ds_hexsl), &ds_hexsl, NULL);
391 if (error)
392 return (EPERM);
393
394 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
395 new_default = TRUE;
396
397 /* The label must be translatable */
398 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0))
399 return (EINVAL);
400
401 /*
402 * In a non-global zone, disallow attempts to set a label that
403 * doesn't match that of the zone; otherwise no other checks
404 * are needed.
405 */
406 if (!INGLOBALZONE(curproc)) {
407 if (new_default || !blequal(&new_sl, CR_SL(CRED())))
408 return (EPERM);
409 return (0);
410 }
411
412 /*
413 * For global-zone datasets (i.e., those whose zoned property is
414 * "off", verify that the specified new label is valid for the
415 * global zone.
416 */
417 if (dsl_prop_get_integer(name,
418 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL))
419 return (EPERM);
420 if (!zoned) {
421 if (zfs_check_global_label(name, strval) != 0)
422 return (EPERM);
423 }
424
425 /*
426 * If the existing dataset label is nondefault, check if the
427 * dataset is mounted (label cannot be changed while mounted).
3558fd73 428 * Get the zfs_sb_t; if there isn't one, then the dataset isn't
428870ff
BB		 429 * mounted (or isn't a dataset, doesn't exist, ...).
430 */
431 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) {
432 objset_t *os;
433 static char *setsl_tag = "setsl_tag";
434
435 /*
436 * Try to own the dataset; abort if there is any error,
437 * (e.g., already mounted, in use, or other error).
438 */
439 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE,
440 setsl_tag, &os);
441 if (error)
442 return (EPERM);
443
444 dmu_objset_disown(os, setsl_tag);
445
446 if (new_default) {
447 needed_priv = PRIV_FILE_DOWNGRADE_SL;
448 goto out_check;
449 }
450
451 if (hexstr_to_label(strval, &new_sl) != 0)
452 return (EPERM);
453
454 if (blstrictdom(&ds_sl, &new_sl))
455 needed_priv = PRIV_FILE_DOWNGRADE_SL;
456 else if (blstrictdom(&new_sl, &ds_sl))
457 needed_priv = PRIV_FILE_UPGRADE_SL;
458 } else {
459 /* dataset currently has a default label */
460 if (!new_default)
461 needed_priv = PRIV_FILE_UPGRADE_SL;
462 }
463
464out_check:
465 if (needed_priv != -1)
466 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL));
467 return (0);
d2c15e84
BB		 468#else
469 return ENOTSUP;
470#endif /* HAVE_MLSLABEL */
428870ff
BB		 471}
472
473static int
474zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval,
475 cred_t *cr)
476{
477 char *strval;
478
34dc7c2f
BB		 479 /*
480 * Check permissions for special properties.
481 */
482 switch (prop) {
e75c13c3
BB		 483 default:
484 break;
34dc7c2f
BB		 485 case ZFS_PROP_ZONED:
486 /*
487 * Disallow setting of 'zoned' from within a local zone.
488 */
489 if (!INGLOBALZONE(curproc))
490 return (EPERM);
491 break;
492
493 case ZFS_PROP_QUOTA:
494 if (!INGLOBALZONE(curproc)) {
495 uint64_t zoned;
496 char setpoint[MAXNAMELEN];
497 /*
498 * Unprivileged users are allowed to modify the
499 * quota on things *under* (ie. contained by)
500 * the thing they own.
501 */
428870ff 502 if (dsl_prop_get_integer(dsname, "zoned", &zoned,
34dc7c2f
BB		 503 setpoint))
504 return (EPERM);
428870ff 505 if (!zoned || strlen(dsname) <= strlen(setpoint))
34dc7c2f
BB		 506 return (EPERM);
507 }
508 break;
428870ff
BB		 509
510 case ZFS_PROP_MLSLABEL:
511 if (!is_system_labeled())
512 return (EPERM);
513
514 if (nvpair_value_string(propval, &strval) == 0) {
515 int err;
516
517 err = zfs_set_slabel_policy(dsname, strval, CRED());
518 if (err != 0)
519 return (err);
520 }
521 break;
34dc7c2f
BB		 522 }
523
428870ff 524 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr));
34dc7c2f
BB		 525}
526
527int
528zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr)
529{
530 int error;
531
532 error = zfs_dozonecheck(zc->zc_name, cr);
533 if (error)
534 return (error);
535
536 /*
537 * permission to set permissions will be evaluated later in
538 * dsl_deleg_can_allow()
539 */
540 return (0);
541}
542
543int
544zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr)
545{
428870ff
BB		 546 return (zfs_secpolicy_write_perms(zc->zc_name,
547 ZFS_DELEG_PERM_ROLLBACK, cr));
34dc7c2f
BB		 548}
549
550int
551zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr)
552{
572e2857
BB		 553 spa_t *spa;
554 dsl_pool_t *dp;
555 dsl_dataset_t *ds;
556 char *cp;
557 int error;
558
559 /*
560 * Generate the current snapshot name from the given objsetid, then
561 * use that name for the secpolicy/zone checks.
562 */
563 cp = strchr(zc->zc_name, '@');
564 if (cp == NULL)
565 return (EINVAL);
566 error = spa_open(zc->zc_name, &spa, FTAG);
567 if (error)
568 return (error);
569
570 dp = spa_get_dsl(spa);
571 rw_enter(&dp->dp_config_rwlock, RW_READER);
572 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
573 rw_exit(&dp->dp_config_rwlock);
574 spa_close(spa, FTAG);
575 if (error)
576 return (error);
577
578 dsl_dataset_name(ds, zc->zc_name);
579
580 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds,
581 ZFS_DELEG_PERM_SEND, cr);
582 dsl_dataset_rele(ds, FTAG);
583
584 return (error);
34dc7c2f
BB		 585}
586
3c9609b3 587#ifdef HAVE_SMB_SHARE
9babb374
BB		 588static int
589zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr)
590{
591 vnode_t *vp;
592 int error;
593
594 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
595 NO_FOLLOW, NULL, &vp)) != 0)
596 return (error);
597
598 /* Now make sure mntpnt and dataset are ZFS */
599
600 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
601 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
602 zc->zc_name) != 0)) {
603 VN_RELE(vp);
604 return (EPERM);
605 }
606
607 VN_RELE(vp);
608 return (dsl_deleg_access(zc->zc_name,
609 ZFS_DELEG_PERM_SHARE, cr));
610}
3c9609b3 611#endif /* HAVE_SMB_SHARE */
9babb374 612
34dc7c2f
BB		 613int
614zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr)
615{
3c9609b3 616#ifdef HAVE_SMB_SHARE
34dc7c2f
BB		 617 if (!INGLOBALZONE(curproc))
618 return (EPERM);
619
620 if (secpolicy_nfs(cr) == 0) {
621 return (0);
622 } else {
9babb374
BB		 623 return (zfs_secpolicy_deleg_share(zc, cr));
624 }
325f0235
BB		 625#else
626 return (ENOTSUP);
3c9609b3 627#endif /* HAVE_SMB_SHARE */
9babb374 628}
34dc7c2f 629
9babb374
BB		 630int
631zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr)
632{
3c9609b3 633#ifdef HAVE_SMB_SHARE
9babb374
BB		 634 if (!INGLOBALZONE(curproc))
635 return (EPERM);
34dc7c2f 636
9babb374
BB		 637 if (secpolicy_smb(cr) == 0) {
638 return (0);
639 } else {
640 return (zfs_secpolicy_deleg_share(zc, cr));
34dc7c2f 641 }
325f0235
BB		 642#else
643 return (ENOTSUP);
3c9609b3 644#endif /* HAVE_SMB_SHARE */
34dc7c2f
BB		 645}
646
647static int
648zfs_get_parent(const char *datasetname, char *parent, int parentsize)
649{
650 char *cp;
651
652 /*
653 * Remove the @bla or /bla from the end of the name to get the parent.
654 */
655 (void) strncpy(parent, datasetname, parentsize);
656 cp = strrchr(parent, '@');
657 if (cp != NULL) {
658 cp[0] = '\0';
659 } else {
660 cp = strrchr(parent, '/');
661 if (cp == NULL)
662 return (ENOENT);
663 cp[0] = '\0';
664 }
665
666 return (0);
667}
668
669int
670zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
671{
672 int error;
673
674 if ((error = zfs_secpolicy_write_perms(name,
675 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
676 return (error);
677
678 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
679}
680
681static int
682zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr)
683{
684 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
685}
686
687/*
428870ff
BB		 688 * Destroying snapshots with delegated permissions requires
689 * descendent mount and destroy permissions.
34dc7c2f 690 */
34dc7c2f 691static int
330d06f9 692zfs_secpolicy_destroy_recursive(zfs_cmd_t *zc, cred_t *cr)
34dc7c2f 693{
428870ff
BB		 694 int error;
695 char *dsname;
696
330d06f9 697 dsname = kmem_asprintf("%s@", zc->zc_name);
428870ff
BB		 698
699 error = zfs_secpolicy_destroy_perms(dsname, cr);
ca525220
MM		 700 if (error == ENOENT)
701 error = zfs_secpolicy_destroy_perms(zc->zc_name, cr);
428870ff
BB		 702
703 strfree(dsname);
704 return (error);
34dc7c2f
BB		 705}
706
707int
708zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
709{
428870ff 710 char parentname[MAXNAMELEN];
34dc7c2f
BB		 711 int error;
712
713 if ((error = zfs_secpolicy_write_perms(from,
714 ZFS_DELEG_PERM_RENAME, cr)) != 0)
715 return (error);
716
717 if ((error = zfs_secpolicy_write_perms(from,
718 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
719 return (error);
720
721 if ((error = zfs_get_parent(to, parentname,
722 sizeof (parentname))) != 0)
723 return (error);
724
725 if ((error = zfs_secpolicy_write_perms(parentname,
726 ZFS_DELEG_PERM_CREATE, cr)) != 0)
727 return (error);
728
729 if ((error = zfs_secpolicy_write_perms(parentname,
730 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
731 return (error);
732
733 return (error);
734}
735
736static int
737zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr)
738{
739 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));
740}
741
742static int
743zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr)
744{
428870ff 745 char parentname[MAXNAMELEN];
34dc7c2f
BB		 746 objset_t *clone;
747 int error;
748
749 error = zfs_secpolicy_write_perms(zc->zc_name,
750 ZFS_DELEG_PERM_PROMOTE, cr);
751 if (error)
752 return (error);
753
428870ff 754 error = dmu_objset_hold(zc->zc_name, FTAG, &clone);
34dc7c2f
BB		 755
756 if (error == 0) {
757 dsl_dataset_t *pclone = NULL;
758 dsl_dir_t *dd;
428870ff 759 dd = clone->os_dsl_dataset->ds_dir;
34dc7c2f
BB		 760
761 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER);
b128c09f
BB		 762 error = dsl_dataset_hold_obj(dd->dd_pool,
763 dd->dd_phys->dd_origin_obj, FTAG, &pclone);
34dc7c2f
BB		 764 rw_exit(&dd->dd_pool->dp_config_rwlock);
765 if (error) {
428870ff 766 dmu_objset_rele(clone, FTAG);
34dc7c2f
BB		 767 return (error);
768 }
769
770 error = zfs_secpolicy_write_perms(zc->zc_name,
771 ZFS_DELEG_PERM_MOUNT, cr);
772
773 dsl_dataset_name(pclone, parentname);
428870ff 774 dmu_objset_rele(clone, FTAG);
b128c09f 775 dsl_dataset_rele(pclone, FTAG);
34dc7c2f
BB		 776 if (error == 0)
777 error = zfs_secpolicy_write_perms(parentname,
778 ZFS_DELEG_PERM_PROMOTE, cr);
779 }
780 return (error);
781}
782
783static int
784zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr)
785{
786 int error;
787
788 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
789 ZFS_DELEG_PERM_RECEIVE, cr)) != 0)
790 return (error);
791
792 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
793 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
794 return (error);
795
796 return (zfs_secpolicy_write_perms(zc->zc_name,
797 ZFS_DELEG_PERM_CREATE, cr));
798}
799
800int
801zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
802{
428870ff
BB		 803 return (zfs_secpolicy_write_perms(name,
804 ZFS_DELEG_PERM_SNAPSHOT, cr));
34dc7c2f
BB		 805}
806
807static int
808zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr)
809{
810
811 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr));
812}
813
814static int
815zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr)
816{
428870ff
BB		 817 char parentname[MAXNAMELEN];
818 int error;
34dc7c2f
BB		 819
820 if ((error = zfs_get_parent(zc->zc_name, parentname,
821 sizeof (parentname))) != 0)
822 return (error);
823
824 if (zc->zc_value[0] != '\0') {
825 if ((error = zfs_secpolicy_write_perms(zc->zc_value,
826 ZFS_DELEG_PERM_CLONE, cr)) != 0)
827 return (error);
828 }
829
830 if ((error = zfs_secpolicy_write_perms(parentname,
831 ZFS_DELEG_PERM_CREATE, cr)) != 0)
832 return (error);
833
834 error = zfs_secpolicy_write_perms(parentname,
835 ZFS_DELEG_PERM_MOUNT, cr);
836
837 return (error);
838}
839
34dc7c2f
BB		 840/*
841 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires
842 * SYS_CONFIG privilege, which is not available in a local zone.
843 */
844/* ARGSUSED */
845static int
846zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr)
847{
848 if (secpolicy_sys_config(cr, B_FALSE) != 0)
849 return (EPERM);
850
851 return (0);
852}
853
572e2857
BB		 854/*
855 * Policy for object to name lookups.
856 */
857/* ARGSUSED */
858static int
859zfs_secpolicy_diff(zfs_cmd_t *zc, cred_t *cr)
860{
861 int error;
862
863 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0)
864 return (0);
865
866 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr);
867 return (error);
868}
869
34dc7c2f
BB		 870/*
871 * Policy for fault injection. Requires all privileges.
872 */
873/* ARGSUSED */
874static int
875zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr)
876{
877 return (secpolicy_zinject(cr));
878}
879
880static int
881zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr)
882{
883 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
884
885 if (prop == ZPROP_INVAL) {
886 if (!zfs_prop_user(zc->zc_value))
887 return (EINVAL);
888 return (zfs_secpolicy_write_perms(zc->zc_name,
889 ZFS_DELEG_PERM_USERPROP, cr));
890 } else {
428870ff
BB		 891 return (zfs_secpolicy_setprop(zc->zc_name, prop,
892 NULL, cr));
34dc7c2f
BB		 893 }
894}
895
9babb374
BB		 896static int
897zfs_secpolicy_userspace_one(zfs_cmd_t *zc, cred_t *cr)
898{
899 int err = zfs_secpolicy_read(zc, cr);
900 if (err)
901 return (err);
902
903 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
904 return (EINVAL);
905
906 if (zc->zc_value[0] == 0) {
907 /*
908 * They are asking about a posix uid/gid. If it's
909 * themself, allow it.
910 */
911 if (zc->zc_objset_type == ZFS_PROP_USERUSED ||
912 zc->zc_objset_type == ZFS_PROP_USERQUOTA) {
913 if (zc->zc_guid == crgetuid(cr))
914 return (0);
915 } else {
916 if (groupmember(zc->zc_guid, cr))
917 return (0);
918 }
919 }
920
921 return (zfs_secpolicy_write_perms(zc->zc_name,
922 userquota_perms[zc->zc_objset_type], cr));
923}
924
925static int
926zfs_secpolicy_userspace_many(zfs_cmd_t *zc, cred_t *cr)
927{
928 int err = zfs_secpolicy_read(zc, cr);
929 if (err)
930 return (err);
931
932 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
933 return (EINVAL);
934
935 return (zfs_secpolicy_write_perms(zc->zc_name,
936 userquota_perms[zc->zc_objset_type], cr));
937}
938
939static int
940zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, cred_t *cr)
941{
428870ff
BB		 942 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION,
943 NULL, cr));
9babb374
BB		 944}
945
45d1cae3
BB		 946static int
947zfs_secpolicy_hold(zfs_cmd_t *zc, cred_t *cr)
948{
949 return (zfs_secpolicy_write_perms(zc->zc_name,
950 ZFS_DELEG_PERM_HOLD, cr));
951}
952
953static int
954zfs_secpolicy_release(zfs_cmd_t *zc, cred_t *cr)
955{
956 return (zfs_secpolicy_write_perms(zc->zc_name,
957 ZFS_DELEG_PERM_RELEASE, cr));
958}
959
572e2857
BB		 960/*
961 * Policy for allowing temporary snapshots to be taken or released
962 */
963static int
964zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, cred_t *cr)
965{
966 /*
967 * A temporary snapshot is the same as a snapshot,
968 * hold, destroy and release all rolled into one.
969 * Delegated diff alone is sufficient that we allow this.
970 */
971 int error;
972
973 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
974 ZFS_DELEG_PERM_DIFF, cr)) == 0)
975 return (0);
976
977 error = zfs_secpolicy_snapshot(zc, cr);
978 if (!error)
979 error = zfs_secpolicy_hold(zc, cr);
980 if (!error)
981 error = zfs_secpolicy_release(zc, cr);
982 if (!error)
983 error = zfs_secpolicy_destroy(zc, cr);
984 return (error);
985}
986
34dc7c2f
BB		 987/*
988 * Returns the nvlist as specified by the user in the zfs_cmd_t.
989 */
990static int
9babb374 991get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp)
34dc7c2f
BB		 992{
993 char *packed;
994 int error;
995 nvlist_t *list = NULL;
996
997 /*
998 * Read in and unpack the user-supplied nvlist.
999 */
1000 if (size == 0)
1001 return (EINVAL);
1002
00b46022 1003 packed = kmem_alloc(size, KM_SLEEP | KM_NODEBUG);
34dc7c2f 1004
9babb374
BB		 1005 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
1006 iflag)) != 0) {
34dc7c2f
BB		 1007 kmem_free(packed, size);
1008 return (error);
1009 }
1010
1011 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) {
1012 kmem_free(packed, size);
1013 return (error);
1014 }
1015
1016 kmem_free(packed, size);
1017
1018 *nvp = list;
1019 return (0);
1020}
1021
428870ff
BB		 1022static int
1023fit_error_list(zfs_cmd_t *zc, nvlist_t **errors)
1024{
1025 size_t size;
1026
1027 VERIFY(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0);
1028
1029 if (size > zc->zc_nvlist_dst_size) {
1030 nvpair_t *more_errors;
1031 int n = 0;
1032
1033 if (zc->zc_nvlist_dst_size < 1024)
1034 return (ENOMEM);
1035
1036 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, 0) == 0);
1037 more_errors = nvlist_prev_nvpair(*errors, NULL);
1038
1039 do {
1040 nvpair_t *pair = nvlist_prev_nvpair(*errors,
1041 more_errors);
1042 VERIFY(nvlist_remove_nvpair(*errors, pair) == 0);
1043 n++;
1044 VERIFY(nvlist_size(*errors, &size,
1045 NV_ENCODE_NATIVE) == 0);
1046 } while (size > zc->zc_nvlist_dst_size);
1047
1048 VERIFY(nvlist_remove_nvpair(*errors, more_errors) == 0);
1049 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, n) == 0);
1050 ASSERT(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0);
1051 ASSERT(size <= zc->zc_nvlist_dst_size);
1052 }
1053
1054 return (0);
1055}
1056
34dc7c2f
BB		 1057static int
1058put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
1059{
1060 char *packed = NULL;
428870ff 1061 int error = 0;
34dc7c2f 1062 size_t size;
34dc7c2f
BB		 1063
1064 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0);
1065
1066 if (size > zc->zc_nvlist_dst_size) {
1067 error = ENOMEM;
1068 } else {
00b46022 1069 packed = kmem_alloc(size, KM_SLEEP | KM_NODEBUG);
34dc7c2f
BB		 1070 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
1071 KM_SLEEP) == 0);
428870ff
BB		 1072 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
1073 size, zc->zc_iflags) != 0)
1074 error = EFAULT;
34dc7c2f
BB		 1075 kmem_free(packed, size);
1076 }
1077
1078 zc->zc_nvlist_dst_size = size;
1079 return (error);
1080}
1081
9babb374 1082static int
3558fd73 1083get_zfs_sb(const char *dsname, zfs_sb_t **zsbp)
9babb374
BB		 1084{
1085 objset_t *os;
1086 int error;
1087
428870ff 1088 error = dmu_objset_hold(dsname, FTAG, &os);
9babb374
BB		 1089 if (error)
1090 return (error);
428870ff
BB		 1091 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1092 dmu_objset_rele(os, FTAG);
1093 return (EINVAL);
1094 }
9babb374 1095
428870ff 1096 mutex_enter(&os->os_user_ptr_lock);
3558fd73 1097 *zsbp = dmu_objset_get_user(os);
2cf7f52b 1098 if (*zsbp && (*zsbp)->z_sb) {
61f218b0 1099 atomic_inc(&((*zsbp)->z_sb->s_active));
9babb374
BB		 1100 } else {
1101 error = ESRCH;
1102 }
428870ff
BB		 1103 mutex_exit(&os->os_user_ptr_lock);
1104 dmu_objset_rele(os, FTAG);
9babb374
BB		 1105 return (error);
1106}
1107
1108/*
3558fd73 1109 * Find a zfs_sb_t for a mounted filesystem, or create our own, in which
2cf7f52b 1110 * case its z_sb will be NULL, and it will be opened as the owner.
9ae529ec
CS		 1111 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER,
1112 * which prevents all inode ops from running.
9babb374
BB		 1113 */
1114static int
3558fd73 1115zfs_sb_hold(const char *name, void *tag, zfs_sb_t **zsbp, boolean_t writer)
9babb374
BB		 1116{
1117 int error = 0;
9babb374 1118
3558fd73
BB		 1119 if (get_zfs_sb(name, zsbp) != 0)
1120 error = zfs_sb_create(name, zsbp);
9babb374 1121 if (error == 0) {
3558fd73 1122 rrw_enter(&(*zsbp)->z_teardown_lock, (writer) ? RW_WRITER :
572e2857 1123 RW_READER, tag);
3558fd73 1124 if ((*zsbp)->z_unmounted) {
9babb374
BB		 1125 /*
1126 * XXX we could probably try again, since the unmounting
1127 * thread should be just about to disassociate the
1128 * objset from the zfsvfs.
1129 */
3558fd73 1130 rrw_exit(&(*zsbp)->z_teardown_lock, tag);
9babb374
BB		 1131 return (EBUSY);
1132 }
1133 }
1134 return (error);
1135}
1136
1137static void
3558fd73 1138zfs_sb_rele(zfs_sb_t *zsb, void *tag)
9babb374 1139{
3558fd73 1140 rrw_exit(&zsb->z_teardown_lock, tag);
9babb374 1141
2cf7f52b
BB		 1142 if (zsb->z_sb) {
1143 deactivate_super(zsb->z_sb);
9babb374 1144 } else {
3558fd73
BB		 1145 dmu_objset_disown(zsb->z_os, zsb);
1146 zfs_sb_free(zsb);
9babb374
BB		 1147 }
1148}
1149
34dc7c2f
BB		 1150static int
1151zfs_ioc_pool_create(zfs_cmd_t *zc)
1152{
1153 int error;
1154 nvlist_t *config, *props = NULL;
b128c09f
BB		 1155 nvlist_t *rootprops = NULL;
1156 nvlist_t *zplprops = NULL;
34dc7c2f
BB		 1157 char *buf;
1158
c65aa5b2
BB		 1159 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1160 zc->zc_iflags, &config)))
34dc7c2f
BB		 1161 return (error);
1162
1163 if (zc->zc_nvlist_src_size != 0 && (error =
9babb374
BB		 1164 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1165 zc->zc_iflags, &props))) {
34dc7c2f
BB		 1166 nvlist_free(config);
1167 return (error);
1168 }
1169
b128c09f
BB		 1170 if (props) {
1171 nvlist_t *nvl = NULL;
1172 uint64_t version = SPA_VERSION;
1173
1174 (void) nvlist_lookup_uint64(props,
1175 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version);
9ae529ec 1176 if (!SPA_VERSION_IS_SUPPORTED(version)) {
b128c09f
BB		 1177 error = EINVAL;
1178 goto pool_props_bad;
1179 }
1180 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl);
1181 if (nvl) {
1182 error = nvlist_dup(nvl, &rootprops, KM_SLEEP);
1183 if (error != 0) {
1184 nvlist_free(config);
1185 nvlist_free(props);
1186 return (error);
1187 }
1188 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS);
1189 }
1190 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1191 error = zfs_fill_zplprops_root(version, rootprops,
1192 zplprops, NULL);
1193 if (error)
1194 goto pool_props_bad;
1195 }
1196
34dc7c2f
BB		 1197 buf = history_str_get(zc);
1198
b128c09f
BB		 1199 error = spa_create(zc->zc_name, config, props, buf, zplprops);
1200
1201 /*
1202 * Set the remaining root properties
1203 */
428870ff
BB		 1204 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name,
1205 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0)
b128c09f 1206 (void) spa_destroy(zc->zc_name);
34dc7c2f
BB		 1207
1208 if (buf != NULL)
1209 history_str_free(buf);
1210
b128c09f
BB		 1211pool_props_bad:
1212 nvlist_free(rootprops);
1213 nvlist_free(zplprops);
34dc7c2f 1214 nvlist_free(config);
b128c09f 1215 nvlist_free(props);
34dc7c2f
BB		 1216
1217 return (error);
1218}
1219
1220static int
1221zfs_ioc_pool_destroy(zfs_cmd_t *zc)
1222{
1223 int error;
1224 zfs_log_history(zc);
1225 error = spa_destroy(zc->zc_name);
428870ff
BB		 1226 if (error == 0)
1227 zvol_remove_minors(zc->zc_name);
34dc7c2f
BB		 1228 return (error);
1229}
1230
1231static int
1232zfs_ioc_pool_import(zfs_cmd_t *zc)
1233{
34dc7c2f
BB		 1234 nvlist_t *config, *props = NULL;
1235 uint64_t guid;
428870ff 1236 int error;
34dc7c2f
BB		 1237
1238 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
9babb374 1239 zc->zc_iflags, &config)) != 0)
34dc7c2f
BB		 1240 return (error);
1241
1242 if (zc->zc_nvlist_src_size != 0 && (error =
9babb374
BB		 1243 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1244 zc->zc_iflags, &props))) {
34dc7c2f
BB		 1245 nvlist_free(config);
1246 return (error);
1247 }
1248
1249 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
1250 guid != zc->zc_guid)
1251 error = EINVAL;
1252 else
572e2857 1253 error = spa_import(zc->zc_name, config, props, zc->zc_cookie);
34dc7c2f 1254
572e2857
BB		 1255 if (zc->zc_nvlist_dst != 0) {
1256 int err;
1257
1258 if ((err = put_nvlist(zc, config)) != 0)
1259 error = err;
1260 }
428870ff 1261
60101509
BB		 1262 if (error == 0)
1263 zvol_create_minors(zc->zc_name);
1264
34dc7c2f
BB		 1265 nvlist_free(config);
1266
1267 if (props)
1268 nvlist_free(props);
1269
1270 return (error);
1271}
1272
1273static int
1274zfs_ioc_pool_export(zfs_cmd_t *zc)
1275{
1276 int error;
b128c09f 1277 boolean_t force = (boolean_t)zc->zc_cookie;
fb5f0bc8 1278 boolean_t hardforce = (boolean_t)zc->zc_guid;
b128c09f 1279
34dc7c2f 1280 zfs_log_history(zc);
fb5f0bc8 1281 error = spa_export(zc->zc_name, NULL, force, hardforce);
428870ff
BB		 1282 if (error == 0)
1283 zvol_remove_minors(zc->zc_name);
34dc7c2f
BB		 1284 return (error);
1285}
1286
1287static int
1288zfs_ioc_pool_configs(zfs_cmd_t *zc)
1289{
1290 nvlist_t *configs;
1291 int error;
1292
1293 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
1294 return (EEXIST);
1295
1296 error = put_nvlist(zc, configs);
1297
1298 nvlist_free(configs);
1299
1300 return (error);
1301}
1302
9ae529ec
CS		 1303/*
1304 * inputs:
1305 * zc_name name of the pool
1306 *
1307 * outputs:
1308 * zc_cookie real errno
1309 * zc_nvlist_dst config nvlist
1310 * zc_nvlist_dst_size size of config nvlist
1311 */
34dc7c2f
BB		 1312static int
1313zfs_ioc_pool_stats(zfs_cmd_t *zc)
1314{
1315 nvlist_t *config;
1316 int error;
1317 int ret = 0;
1318
1319 error = spa_get_stats(zc->zc_name, &config, zc->zc_value,
1320 sizeof (zc->zc_value));
1321
1322 if (config != NULL) {
1323 ret = put_nvlist(zc, config);
1324 nvlist_free(config);
1325
1326 /*
1327 * The config may be present even if 'error' is non-zero.
1328 * In this case we return success, and preserve the real errno
1329 * in 'zc_cookie'.
1330 */
1331 zc->zc_cookie = error;
1332 } else {
1333 ret = error;
1334 }
1335
1336 return (ret);
1337}
1338
1339/*
1340 * Try to import the given pool, returning pool stats as appropriate so that
1341 * user land knows which devices are available and overall pool health.
1342 */
1343static int
1344zfs_ioc_pool_tryimport(zfs_cmd_t *zc)
1345{
1346 nvlist_t *tryconfig, *config;
1347 int error;
1348
1349 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
9babb374 1350 zc->zc_iflags, &tryconfig)) != 0)
34dc7c2f
BB		 1351 return (error);
1352
1353 config = spa_tryimport(tryconfig);
1354
1355 nvlist_free(tryconfig);
1356
1357 if (config == NULL)
1358 return (EINVAL);
1359
1360 error = put_nvlist(zc, config);
1361 nvlist_free(config);
1362
1363 return (error);
1364}
1365
428870ff
BB		 1366/*
1367 * inputs:
1368 * zc_name name of the pool
1369 * zc_cookie scan func (pool_scan_func_t)
1370 */
34dc7c2f 1371static int
428870ff 1372zfs_ioc_pool_scan(zfs_cmd_t *zc)
34dc7c2f
BB		 1373{
1374 spa_t *spa;
1375 int error;
1376
1377 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1378 return (error);
1379
428870ff
BB		 1380 if (zc->zc_cookie == POOL_SCAN_NONE)
1381 error = spa_scan_stop(spa);
1382 else
1383 error = spa_scan(spa, zc->zc_cookie);
34dc7c2f
BB		 1384
1385 spa_close(spa, FTAG);
1386
1387 return (error);
1388}
1389
1390static int
1391zfs_ioc_pool_freeze(zfs_cmd_t *zc)
1392{
1393 spa_t *spa;
1394 int error;
1395
1396 error = spa_open(zc->zc_name, &spa, FTAG);
1397 if (error == 0) {
1398 spa_freeze(spa);
1399 spa_close(spa, FTAG);
1400 }
1401 return (error);
1402}
1403
1404static int
1405zfs_ioc_pool_upgrade(zfs_cmd_t *zc)
1406{
1407 spa_t *spa;
1408 int error;
1409
1410 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1411 return (error);
1412
9ae529ec
CS		 1413 if (zc->zc_cookie < spa_version(spa) ||
1414 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) {
34dc7c2f
BB		 1415 spa_close(spa, FTAG);
1416 return (EINVAL);
1417 }
1418
1419 spa_upgrade(spa, zc->zc_cookie);
1420 spa_close(spa, FTAG);
1421
1422 return (error);
1423}
1424
1425static int
1426zfs_ioc_pool_get_history(zfs_cmd_t *zc)
1427{
1428 spa_t *spa;
1429 char *hist_buf;
1430 uint64_t size;
1431 int error;
1432
1433 if ((size = zc->zc_history_len) == 0)
1434 return (EINVAL);
1435
1436 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1437 return (error);
1438
1439 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
1440 spa_close(spa, FTAG);
1441 return (ENOTSUP);
1442 }
1443
34b84cb8 1444 hist_buf = vmem_alloc(size, KM_SLEEP);
34dc7c2f
BB		 1445 if ((error = spa_history_get(spa, &zc->zc_history_offset,
1446 &zc->zc_history_len, hist_buf)) == 0) {
9babb374
BB		 1447 error = ddi_copyout(hist_buf,
1448 (void *)(uintptr_t)zc->zc_history,
1449 zc->zc_history_len, zc->zc_iflags);
34dc7c2f
BB		 1450 }
1451
1452 spa_close(spa, FTAG);
34b84cb8 1453 vmem_free(hist_buf, size);
34dc7c2f
BB		 1454 return (error);
1455}
1456
3541dc6d
GA		 1457static int
1458zfs_ioc_pool_reguid(zfs_cmd_t *zc)
1459{
1460 spa_t *spa;
1461 int error;
1462
1463 error = spa_open(zc->zc_name, &spa, FTAG);
1464 if (error == 0) {
1465 error = spa_change_guid(spa);
1466 spa_close(spa, FTAG);
1467 }
1468 return (error);
1469}
1470
34dc7c2f
BB		 1471static int
1472zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
1473{
1474 int error;
1475
c65aa5b2 1476 if ((error = dsl_dsobj_to_dsname(zc->zc_name,zc->zc_obj,zc->zc_value)))
34dc7c2f
BB		 1477 return (error);
1478
1479 return (0);
1480}
1481
428870ff
BB		 1482/*
1483 * inputs:
1484 * zc_name name of filesystem
1485 * zc_obj object to find
1486 *
1487 * outputs:
1488 * zc_value name of object
1489 */
34dc7c2f
BB		 1490static int
1491zfs_ioc_obj_to_path(zfs_cmd_t *zc)
1492{
428870ff 1493 objset_t *os;
34dc7c2f
BB		 1494 int error;
1495
428870ff
BB		 1496 /* XXX reading from objset not owned */
1497 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
34dc7c2f 1498 return (error);
428870ff
BB		 1499 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1500 dmu_objset_rele(os, FTAG);
1501 return (EINVAL);
1502 }
1503 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value,
34dc7c2f 1504 sizeof (zc->zc_value));
428870ff 1505 dmu_objset_rele(os, FTAG);
34dc7c2f
BB		 1506
1507 return (error);
1508}
1509
572e2857
BB		 1510/*
1511 * inputs:
1512 * zc_name name of filesystem
1513 * zc_obj object to find
1514 *
1515 * outputs:
1516 * zc_stat stats on object
1517 * zc_value path to object
1518 */
1519static int
1520zfs_ioc_obj_to_stats(zfs_cmd_t *zc)
1521{
1522 objset_t *os;
1523 int error;
1524
1525 /* XXX reading from objset not owned */
1526 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1527 return (error);
1528 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1529 dmu_objset_rele(os, FTAG);
1530 return (EINVAL);
1531 }
1532 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value,
1533 sizeof (zc->zc_value));
1534 dmu_objset_rele(os, FTAG);
1535
1536 return (error);
1537}
1538
34dc7c2f
BB		 1539static int
1540zfs_ioc_vdev_add(zfs_cmd_t *zc)
1541{
1542 spa_t *spa;
1543 int error;
1544 nvlist_t *config, **l2cache, **spares;
1545 uint_t nl2cache = 0, nspares = 0;
1546
1547 error = spa_open(zc->zc_name, &spa, FTAG);
1548 if (error != 0)
1549 return (error);
1550
1551 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
9babb374 1552 zc->zc_iflags, &config);
34dc7c2f
BB		 1553 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
1554 &l2cache, &nl2cache);
1555
1556 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
1557 &spares, &nspares);
1558
1559 /*
1560 * A root pool with concatenated devices is not supported.
1561 * Thus, can not add a device to a root pool.
1562 *
1563 * Intent log device can not be added to a rootpool because
1564 * during mountroot, zil is replayed, a seperated log device
1565 * can not be accessed during the mountroot time.
1566 *
1567 * l2cache and spare devices are ok to be added to a rootpool.
1568 */
428870ff
BB		 1569 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) {
1570 nvlist_free(config);
34dc7c2f
BB		 1571 spa_close(spa, FTAG);
1572 return (EDOM);
1573 }
1574
1575 if (error == 0) {
1576 error = spa_vdev_add(spa, config);
1577 nvlist_free(config);
1578 }
1579 spa_close(spa, FTAG);
1580 return (error);
1581}
1582
428870ff
BB		 1583/*
1584 * inputs:
1585 * zc_name name of the pool
1586 * zc_nvlist_conf nvlist of devices to remove
1587 * zc_cookie to stop the remove?
1588 */
34dc7c2f
BB		 1589static int
1590zfs_ioc_vdev_remove(zfs_cmd_t *zc)
1591{
1592 spa_t *spa;
1593 int error;
1594
1595 error = spa_open(zc->zc_name, &spa, FTAG);
1596 if (error != 0)
1597 return (error);
1598 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE);
1599 spa_close(spa, FTAG);
1600 return (error);
1601}
1602
1603static int
1604zfs_ioc_vdev_set_state(zfs_cmd_t *zc)
1605{
1606 spa_t *spa;
1607 int error;
1608 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
1609
1610 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1611 return (error);
1612 switch (zc->zc_cookie) {
1613 case VDEV_STATE_ONLINE:
1614 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate);
1615 break;
1616
1617 case VDEV_STATE_OFFLINE:
1618 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj);
1619 break;
1620
1621 case VDEV_STATE_FAULTED:
428870ff
BB		 1622 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1623 zc->zc_obj != VDEV_AUX_EXTERNAL)
1624 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1625
1626 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj);
34dc7c2f
BB		 1627 break;
1628
1629 case VDEV_STATE_DEGRADED:
428870ff
BB		 1630 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1631 zc->zc_obj != VDEV_AUX_EXTERNAL)
1632 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1633
1634 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj);
34dc7c2f
BB		 1635 break;
1636
1637 default:
1638 error = EINVAL;
1639 }
1640 zc->zc_cookie = newstate;
1641 spa_close(spa, FTAG);
1642 return (error);
1643}
1644
1645static int
1646zfs_ioc_vdev_attach(zfs_cmd_t *zc)
1647{
1648 spa_t *spa;
1649 int replacing = zc->zc_cookie;
1650 nvlist_t *config;
1651 int error;
1652
1653 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1654 return (error);
1655
1656 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
9babb374 1657 zc->zc_iflags, &config)) == 0) {
34dc7c2f
BB		 1658 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
1659 nvlist_free(config);
1660 }
1661
1662 spa_close(spa, FTAG);
1663 return (error);
1664}
1665
1666static int
1667zfs_ioc_vdev_detach(zfs_cmd_t *zc)
1668{
1669 spa_t *spa;
1670 int error;
1671
1672 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1673 return (error);
1674
fb5f0bc8 1675 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE);
34dc7c2f
BB		 1676
1677 spa_close(spa, FTAG);
1678 return (error);
1679}
1680
428870ff
BB		 1681static int
1682zfs_ioc_vdev_split(zfs_cmd_t *zc)
1683{
1684 spa_t *spa;
1685 nvlist_t *config, *props = NULL;
1686 int error;
1687 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT);
1688
1689 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1690 return (error);
1691
c65aa5b2
BB		 1692 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1693 zc->zc_iflags, &config))) {
428870ff
BB		 1694 spa_close(spa, FTAG);
1695 return (error);
1696 }
1697
1698 if (zc->zc_nvlist_src_size != 0 && (error =
1699 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1700 zc->zc_iflags, &props))) {
1701 spa_close(spa, FTAG);
1702 nvlist_free(config);
1703 return (error);
1704 }
1705
1706 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp);
1707
1708 spa_close(spa, FTAG);
1709
1710 nvlist_free(config);
1711 nvlist_free(props);
1712
1713 return (error);
1714}
1715
34dc7c2f
BB		 1716static int
1717zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
1718{
1719 spa_t *spa;
1720 char *path = zc->zc_value;
1721 uint64_t guid = zc->zc_guid;
1722 int error;
1723
1724 error = spa_open(zc->zc_name, &spa, FTAG);
1725 if (error != 0)
1726 return (error);
1727
1728 error = spa_vdev_setpath(spa, guid, path);
1729 spa_close(spa, FTAG);
1730 return (error);
1731}
1732
9babb374
BB		 1733static int
1734zfs_ioc_vdev_setfru(zfs_cmd_t *zc)
1735{
1736 spa_t *spa;
1737 char *fru = zc->zc_value;
1738 uint64_t guid = zc->zc_guid;
1739 int error;
1740
1741 error = spa_open(zc->zc_name, &spa, FTAG);
1742 if (error != 0)
1743 return (error);
1744
1745 error = spa_vdev_setfru(spa, guid, fru);
1746 spa_close(spa, FTAG);
1747 return (error);
1748}
1749
34dc7c2f 1750static int
572e2857 1751zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os)
34dc7c2f 1752{
572e2857 1753 int error = 0;
34dc7c2f
BB		 1754 nvlist_t *nv;
1755
34dc7c2f
BB		 1756 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1757
1758 if (zc->zc_nvlist_dst != 0 &&
428870ff 1759 (error = dsl_prop_get_all(os, &nv)) == 0) {
34dc7c2f
BB		 1760 dmu_objset_stats(os, nv);
1761 /*
1762 * NB: zvol_get_stats() will read the objset contents,
1763 * which we aren't supposed to do with a
b128c09f 1764 * DS_MODE_USER hold, because it could be
34dc7c2f 1765 * inconsistent. So this is a bit of a workaround...
428870ff 1766 * XXX reading with out owning
34dc7c2f 1767 */
330d06f9
MA		 1768 if (!zc->zc_objset_stats.dds_inconsistent &&
1769 dmu_objset_type(os) == DMU_OST_ZVOL) {
1770 error = zvol_get_stats(os, nv);
1771 if (error == EIO)
1772 return (error);
1773 VERIFY3S(error, ==, 0);
34dc7c2f 1774 }
8a8f5c6b
BB		 1775 if (error == 0)
1776 error = put_nvlist(zc, nv);
34dc7c2f
BB		 1777 nvlist_free(nv);
1778 }
1779
572e2857
BB		 1780 return (error);
1781}
1782
1783/*
1784 * inputs:
1785 * zc_name name of filesystem
1786 * zc_nvlist_dst_size size of buffer for property nvlist
1787 *
1788 * outputs:
1789 * zc_objset_stats stats
1790 * zc_nvlist_dst property nvlist
1791 * zc_nvlist_dst_size size of property nvlist
1792 */
1793static int
1794zfs_ioc_objset_stats(zfs_cmd_t *zc)
1795{
1796 objset_t *os = NULL;
1797 int error;
1798
c65aa5b2 1799 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)))
572e2857
BB		 1800 return (error);
1801
1802 error = zfs_ioc_objset_stats_impl(zc, os);
1803
428870ff 1804 dmu_objset_rele(os, FTAG);
572e2857 1805
428870ff
BB		 1806 return (error);
1807}
1808
1809/*
1810 * inputs:
1811 * zc_name name of filesystem
1812 * zc_nvlist_dst_size size of buffer for property nvlist
1813 *
1814 * outputs:
1815 * zc_nvlist_dst received property nvlist
1816 * zc_nvlist_dst_size size of received property nvlist
1817 *
1818 * Gets received properties (distinct from local properties on or after
1819 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from
1820 * local property values.
1821 */
1822static int
26685276 1823zfs_ioc_objset_recvd_props(zfs_cmd_t *zc)
428870ff
BB		 1824{
1825 objset_t *os = NULL;
1826 int error;
1827 nvlist_t *nv;
1828
c65aa5b2 1829 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)))
428870ff
BB		 1830 return (error);
1831
1832 /*
1833 * Without this check, we would return local property values if the
1834 * caller has not already received properties on or after
1835 * SPA_VERSION_RECVD_PROPS.
1836 */
1837 if (!dsl_prop_get_hasrecvd(os)) {
1838 dmu_objset_rele(os, FTAG);
1839 return (ENOTSUP);
1840 }
1841
1842 if (zc->zc_nvlist_dst != 0 &&
1843 (error = dsl_prop_get_received(os, &nv)) == 0) {
1844 error = put_nvlist(zc, nv);
1845 nvlist_free(nv);
1846 }
1847
1848 dmu_objset_rele(os, FTAG);
34dc7c2f
BB		 1849 return (error);
1850}
1851
1852static int
1853nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop)
1854{
1855 uint64_t value;
1856 int error;
1857
1858 /*
1859 * zfs_get_zplprop() will either find a value or give us
1860 * the default value (if there is one).
1861 */
1862 if ((error = zfs_get_zplprop(os, prop, &value)) != 0)
1863 return (error);
1864 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0);
1865 return (0);
1866}
1867
1868/*
1869 * inputs:
1870 * zc_name name of filesystem
1871 * zc_nvlist_dst_size size of buffer for zpl property nvlist
1872 *
1873 * outputs:
1874 * zc_nvlist_dst zpl property nvlist
1875 * zc_nvlist_dst_size size of zpl property nvlist
1876 */
1877static int
1878zfs_ioc_objset_zplprops(zfs_cmd_t *zc)
1879{
1880 objset_t *os;
1881 int err;
1882
428870ff 1883 /* XXX reading without owning */
c65aa5b2 1884 if ((err = dmu_objset_hold(zc->zc_name, FTAG, &os)))
34dc7c2f
BB		 1885 return (err);
1886
1887 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1888
1889 /*
1890 * NB: nvl_add_zplprop() will read the objset contents,
b128c09f
BB		 1891 * which we aren't supposed to do with a DS_MODE_USER
1892 * hold, because it could be inconsistent.
34dc7c2f 1893 */
b8864a23 1894 if (zc->zc_nvlist_dst != 0 &&
34dc7c2f
BB		 1895 !zc->zc_objset_stats.dds_inconsistent &&
1896 dmu_objset_type(os) == DMU_OST_ZFS) {
1897 nvlist_t *nv;
1898
1899 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1900 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 &&
1901 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 &&
1902 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 &&
1903 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0)
1904 err = put_nvlist(zc, nv);
1905 nvlist_free(nv);
1906 } else {
1907 err = ENOENT;
1908 }
428870ff 1909 dmu_objset_rele(os, FTAG);
34dc7c2f
BB		 1910 return (err);
1911}
1912
9babb374
BB		 1913static boolean_t
1914dataset_name_hidden(const char *name)
1915{
1916 /*
1917 * Skip over datasets that are not visible in this zone,
1918 * internal datasets (which have a $ in their name), and
1919 * temporary datasets (which have a % in their name).
1920 */
1921 if (strchr(name, '$') != NULL)
1922 return (B_TRUE);
1923 if (strchr(name, '%') != NULL)
1924 return (B_TRUE);
1925 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL))
1926 return (B_TRUE);
1927 return (B_FALSE);
1928}
1929
34dc7c2f
BB		 1930/*
1931 * inputs:
1932 * zc_name name of filesystem
1933 * zc_cookie zap cursor
1934 * zc_nvlist_dst_size size of buffer for property nvlist
1935 *
1936 * outputs:
1937 * zc_name name of next filesystem
9babb374 1938 * zc_cookie zap cursor
34dc7c2f
BB		 1939 * zc_objset_stats stats
1940 * zc_nvlist_dst property nvlist
1941 * zc_nvlist_dst_size size of property nvlist
34dc7c2f
BB		 1942 */
1943static int
1944zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
1945{
1946 objset_t *os;
1947 int error;
1948 char *p;
428870ff 1949 size_t orig_len = strlen(zc->zc_name);
34dc7c2f 1950
428870ff 1951top:
c65aa5b2 1952 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os))) {
34dc7c2f
BB		 1953 if (error == ENOENT)
1954 error = ESRCH;
1955 return (error);
1956 }
1957
1958 p = strrchr(zc->zc_name, '/');
1959 if (p == NULL || p[1] != '\0')
1960 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
1961 p = zc->zc_name + strlen(zc->zc_name);
1962
9babb374
BB		 1963 /*
1964 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0
1965 * but is not declared void because its called by dmu_objset_find().
1966 */
d164b209
BB		 1967 if (zc->zc_cookie == 0) {
1968 uint64_t cookie = 0;
1969 int len = sizeof (zc->zc_name) - (p - zc->zc_name);
1970
7d5cd71d
MM		 1971 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) {
1972 if (!dataset_name_hidden(zc->zc_name))
1973 (void) dmu_objset_prefetch(zc->zc_name, NULL);
1974 }
d164b209
BB		 1975 }
1976
34dc7c2f
BB		 1977 do {
1978 error = dmu_dir_list_next(os,
1979 sizeof (zc->zc_name) - (p - zc->zc_name), p,
1980 NULL, &zc->zc_cookie);
1981 if (error == ENOENT)
1982 error = ESRCH;
330d06f9 1983 } while (error == 0 && dataset_name_hidden(zc->zc_name));
428870ff 1984 dmu_objset_rele(os, FTAG);
34dc7c2f 1985
428870ff
BB		 1986 /*
1987 * If it's an internal dataset (ie. with a '$' in its name),
1988 * don't try to get stats for it, otherwise we'll return ENOENT.
1989 */
1990 if (error == 0 && strchr(zc->zc_name, '$') == NULL) {
34dc7c2f 1991 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
428870ff
BB		 1992 if (error == ENOENT) {
1993 /* We lost a race with destroy, get the next one. */
1994 zc->zc_name[orig_len] = '\0';
1995 goto top;
1996 }
1997 }
34dc7c2f
BB		 1998 return (error);
1999}
2000
2001/*
2002 * inputs:
2003 * zc_name name of filesystem
2004 * zc_cookie zap cursor
2005 * zc_nvlist_dst_size size of buffer for property nvlist
2006 *
2007 * outputs:
2008 * zc_name name of next snapshot
2009 * zc_objset_stats stats
2010 * zc_nvlist_dst property nvlist
2011 * zc_nvlist_dst_size size of property nvlist
34dc7c2f
BB		 2012 */
2013static int
2014zfs_ioc_snapshot_list_next(zfs_cmd_t *zc)
2015{
2016 objset_t *os;
2017 int error;
2018
428870ff 2019top:
0cee2406 2020 if (zc->zc_cookie == 0 && !zc->zc_simple)
428870ff
BB		 2021 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch,
2022 NULL, DS_FIND_SNAPSHOTS);
2023
2024 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
b128c09f
BB		 2025 if (error)
2026 return (error == ENOENT ? ESRCH : error);
34dc7c2f
BB		 2027
2028 /*
2029 * A dataset name of maximum length cannot have any snapshots,
2030 * so exit immediately.
2031 */
2032 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) {
428870ff 2033 dmu_objset_rele(os, FTAG);
34dc7c2f
BB		 2034 return (ESRCH);
2035 }
2036
2037 error = dmu_snapshot_list_next(os,
2038 sizeof (zc->zc_name) - strlen(zc->zc_name),
572e2857
BB		 2039 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie,
2040 NULL);
2041
0cee2406 2042 if (error == 0 && !zc->zc_simple) {
572e2857
BB		 2043 dsl_dataset_t *ds;
2044 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool;
2045
2046 /*
2047 * Since we probably don't have a hold on this snapshot,
2048 * it's possible that the objsetid could have been destroyed
2049 * and reused for a new objset. It's OK if this happens during
2050 * a zfs send operation, since the new createtxg will be
2051 * beyond the range we're interested in.
2052 */
2053 rw_enter(&dp->dp_config_rwlock, RW_READER);
2054 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds);
2055 rw_exit(&dp->dp_config_rwlock);
2056 if (error) {
2057 if (error == ENOENT) {
2058 /* Racing with destroy, get the next one. */
2059 *strchr(zc->zc_name, '@') = '\0';
2060 dmu_objset_rele(os, FTAG);
2061 goto top;
2062 }
2063 } else {
2064 objset_t *ossnap;
2065
2066 error = dmu_objset_from_ds(ds, &ossnap);
2067 if (error == 0)
2068 error = zfs_ioc_objset_stats_impl(zc, ossnap);
2069 dsl_dataset_rele(ds, FTAG);
428870ff
BB		 2070 }
2071 } else if (error == ENOENT) {
b128c09f 2072 error = ESRCH;
428870ff 2073 }
34dc7c2f 2074
572e2857 2075 dmu_objset_rele(os, FTAG);
34dc7c2f 2076 /* if we failed, undo the @ that we tacked on to zc_name */
b128c09f 2077 if (error)
34dc7c2f 2078 *strchr(zc->zc_name, '@') = '\0';
34dc7c2f
BB		 2079 return (error);
2080}
2081
428870ff
BB		 2082static int
2083zfs_prop_set_userquota(const char *dsname, nvpair_t *pair)
34dc7c2f 2084{
428870ff
BB		 2085 const char *propname = nvpair_name(pair);
2086 uint64_t *valary;
2087 unsigned int vallen;
2088 const char *domain;
2089 char *dash;
2090 zfs_userquota_prop_t type;
2091 uint64_t rid;
2092 uint64_t quota;
3558fd73 2093 zfs_sb_t *zsb;
428870ff
BB		 2094 int err;
2095
2096 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2097 nvlist_t *attrs;
2098 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2099 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2100 &pair) != 0)
2101 return (EINVAL);
2102 }
34dc7c2f
BB		 2103
2104 /*
428870ff
BB		 2105 * A correctly constructed propname is encoded as
2106 * userquota@<rid>-<domain>.
34dc7c2f 2107 */
428870ff
BB		 2108 if ((dash = strchr(propname, '-')) == NULL ||
2109 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 ||
2110 vallen != 3)
2111 return (EINVAL);
34dc7c2f 2112
428870ff
BB		 2113 domain = dash + 1;
2114 type = valary[0];
2115 rid = valary[1];
2116 quota = valary[2];
34dc7c2f 2117
3558fd73 2118 err = zfs_sb_hold(dsname, FTAG, &zsb, B_FALSE);
428870ff 2119 if (err == 0) {
3558fd73
BB		 2120 err = zfs_set_userquota(zsb, type, domain, rid, quota);
2121 zfs_sb_rele(zsb, FTAG);
428870ff 2122 }
9babb374 2123
428870ff
BB		 2124 return (err);
2125}
34dc7c2f 2126
428870ff
BB		 2127/*
2128 * If the named property is one that has a special function to set its value,
2129 * return 0 on success and a positive error code on failure; otherwise if it is
2130 * not one of the special properties handled by this function, return -1.
2131 *
2132 * XXX: It would be better for callers of the property interface if we handled
2133 * these special cases in dsl_prop.c (in the dsl layer).
2134 */
2135static int
2136zfs_prop_set_special(const char *dsname, zprop_source_t source,
2137 nvpair_t *pair)
2138{
2139 const char *propname = nvpair_name(pair);
2140 zfs_prop_t prop = zfs_name_to_prop(propname);
2141 uint64_t intval;
2142 int err;
9babb374 2143
428870ff
BB		 2144 if (prop == ZPROP_INVAL) {
2145 if (zfs_prop_userquota(propname))
2146 return (zfs_prop_set_userquota(dsname, pair));
2147 return (-1);
2148 }
34dc7c2f 2149
428870ff
BB		 2150 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2151 nvlist_t *attrs;
2152 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2153 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2154 &pair) == 0);
2155 }
b128c09f 2156
428870ff
BB		 2157 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING)
2158 return (-1);
34dc7c2f 2159
428870ff 2160 VERIFY(0 == nvpair_value_uint64(pair, &intval));
34dc7c2f 2161
428870ff
BB		 2162 switch (prop) {
2163 case ZFS_PROP_QUOTA:
2164 err = dsl_dir_set_quota(dsname, source, intval);
2165 break;
2166 case ZFS_PROP_REFQUOTA:
2167 err = dsl_dataset_set_quota(dsname, source, intval);
2168 break;
2169 case ZFS_PROP_RESERVATION:
2170 err = dsl_dir_set_reservation(dsname, source, intval);
2171 break;
2172 case ZFS_PROP_REFRESERVATION:
2173 err = dsl_dataset_set_reservation(dsname, source, intval);
2174 break;
2175 case ZFS_PROP_VOLSIZE:
60101509 2176 err = zvol_set_volsize(dsname, intval);
428870ff
BB		 2177 break;
2178 case ZFS_PROP_VERSION:
2179 {
3558fd73 2180 zfs_sb_t *zsb;
428870ff 2181
3558fd73 2182 if ((err = zfs_sb_hold(dsname, FTAG, &zsb, B_TRUE)) != 0)
34dc7c2f 2183 break;
b128c09f 2184
3558fd73
BB		 2185 err = zfs_set_version(zsb, intval);
2186 zfs_sb_rele(zsb, FTAG);
34dc7c2f 2187
428870ff
BB		 2188 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) {
2189 zfs_cmd_t *zc;
34dc7c2f 2190
fa6e5ced
BB		 2191 zc = kmem_zalloc(sizeof (zfs_cmd_t),
2192 KM_SLEEP | KM_NODEBUG);
428870ff
BB		 2193 (void) strcpy(zc->zc_name, dsname);
2194 (void) zfs_ioc_userspace_upgrade(zc);
2195 kmem_free(zc, sizeof (zfs_cmd_t));
34dc7c2f 2196 }
428870ff
BB		 2197 break;
2198 }
34dc7c2f 2199
428870ff
BB		 2200 default:
2201 err = -1;
2202 }
34dc7c2f 2203
428870ff
BB		 2204 return (err);
2205}
34dc7c2f 2206
428870ff
BB		 2207/*
2208 * This function is best effort. If it fails to set any of the given properties,
2209 * it continues to set as many as it can and returns the first error
2210 * encountered. If the caller provides a non-NULL errlist, it also gives the
2211 * complete list of names of all the properties it failed to set along with the
2212 * corresponding error numbers. The caller is responsible for freeing the
2213 * returned errlist.
2214 *
2215 * If every property is set successfully, zero is returned and the list pointed
2216 * at by errlist is NULL.
2217 */
2218int
2219zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl,
2220 nvlist_t **errlist)
2221{
2222 nvpair_t *pair;
2223 nvpair_t *propval;
2224 int rv = 0;
2225 uint64_t intval;
2226 char *strval;
2227 nvlist_t *genericnvl;
2228 nvlist_t *errors;
2229 nvlist_t *retrynvl;
34dc7c2f 2230
428870ff
BB		 2231 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2232 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2233 VERIFY(nvlist_alloc(&retrynvl, NV_UNIQUE_NAME, KM_SLEEP) == 0);
34dc7c2f 2234
428870ff
BB		 2235retry:
2236 pair = NULL;
2237 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2238 const char *propname = nvpair_name(pair);
2239 zfs_prop_t prop = zfs_name_to_prop(propname);
2240 int err = 0;
2241
2242 /* decode the property value */
2243 propval = pair;
2244 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2245 nvlist_t *attrs;
2246 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2247 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2248 &propval) != 0)
2249 err = EINVAL;
9babb374 2250 }
34dc7c2f 2251
428870ff
BB		 2252 /* Validate value type */
2253 if (err == 0 && prop == ZPROP_INVAL) {
2254 if (zfs_prop_user(propname)) {
2255 if (nvpair_type(propval) != DATA_TYPE_STRING)
2256 err = EINVAL;
2257 } else if (zfs_prop_userquota(propname)) {
2258 if (nvpair_type(propval) !=
2259 DATA_TYPE_UINT64_ARRAY)
2260 err = EINVAL;
330d06f9
MA		 2261 } else {
2262 err = EINVAL;
428870ff
BB		 2263 }
2264 } else if (err == 0) {
2265 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2266 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING)
2267 err = EINVAL;
2268 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) {
34dc7c2f
BB		 2269 const char *unused;
2270
428870ff
BB		 2271 VERIFY(nvpair_value_uint64(propval,
2272 &intval) == 0);
34dc7c2f
BB		 2273
2274 switch (zfs_prop_get_type(prop)) {
2275 case PROP_TYPE_NUMBER:
2276 break;
2277 case PROP_TYPE_STRING:
428870ff
BB		 2278 err = EINVAL;
2279 break;
34dc7c2f
BB		 2280 case PROP_TYPE_INDEX:
2281 if (zfs_prop_index_to_string(prop,
428870ff
BB		 2282 intval, &unused) != 0)
2283 err = EINVAL;
34dc7c2f
BB		 2284 break;
2285 default:
2286 cmn_err(CE_PANIC,
2287 "unknown property type");
34dc7c2f 2288 }
34dc7c2f 2289 } else {
428870ff 2290 err = EINVAL;
34dc7c2f 2291 }
34dc7c2f 2292 }
428870ff
BB		 2293
2294 /* Validate permissions */
2295 if (err == 0)
2296 err = zfs_check_settable(dsname, pair, CRED());
2297
2298 if (err == 0) {
2299 err = zfs_prop_set_special(dsname, source, pair);
2300 if (err == -1) {
2301 /*
2302 * For better performance we build up a list of
2303 * properties to set in a single transaction.
2304 */
2305 err = nvlist_add_nvpair(genericnvl, pair);
2306 } else if (err != 0 && nvl != retrynvl) {
2307 /*
2308 * This may be a spurious error caused by
2309 * receiving quota and reservation out of order.
2310 * Try again in a second pass.
2311 */
2312 err = nvlist_add_nvpair(retrynvl, pair);
2313 }
2314 }
2315
2316 if (err != 0)
2317 VERIFY(nvlist_add_int32(errors, propname, err) == 0);
34dc7c2f
BB		 2318 }
2319
428870ff
BB		 2320 if (nvl != retrynvl && !nvlist_empty(retrynvl)) {
2321 nvl = retrynvl;
2322 goto retry;
2323 }
2324
2325 if (!nvlist_empty(genericnvl) &&
2326 dsl_props_set(dsname, source, genericnvl) != 0) {
2327 /*
2328 * If this fails, we still want to set as many properties as we
2329 * can, so try setting them individually.
2330 */
2331 pair = NULL;
2332 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) {
2333 const char *propname = nvpair_name(pair);
2334 int err = 0;
2335
2336 propval = pair;
2337 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2338 nvlist_t *attrs;
2339 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2340 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2341 &propval) == 0);
2342 }
2343
2344 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2345 VERIFY(nvpair_value_string(propval,
2346 &strval) == 0);
2347 err = dsl_prop_set(dsname, propname, source, 1,
2348 strlen(strval) + 1, strval);
2349 } else {
2350 VERIFY(nvpair_value_uint64(propval,
2351 &intval) == 0);
2352 err = dsl_prop_set(dsname, propname, source, 8,
2353 1, &intval);
2354 }
2355
2356 if (err != 0) {
2357 VERIFY(nvlist_add_int32(errors, propname,
2358 err) == 0);
2359 }
2360 }
9babb374 2361 }
9babb374 2362 nvlist_free(genericnvl);
428870ff
BB		 2363 nvlist_free(retrynvl);
2364
2365 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
2366 nvlist_free(errors);
2367 errors = NULL;
2368 } else {
2369 VERIFY(nvpair_value_int32(pair, &rv) == 0);
2370 }
2371
2372 if (errlist == NULL)
2373 nvlist_free(errors);
2374 else
2375 *errlist = errors;
2376
2377 return (rv);
9babb374
BB		 2378}
2379
2380/*
2381 * Check that all the properties are valid user properties.
2382 */
2383static int
2384zfs_check_userprops(char *fsname, nvlist_t *nvl)
2385{
428870ff 2386 nvpair_t *pair = NULL;
9babb374
BB		 2387 int error = 0;
2388
428870ff
BB		 2389 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2390 const char *propname = nvpair_name(pair);
9babb374
BB		 2391 char *valstr;
2392
2393 if (!zfs_prop_user(propname) ||
428870ff 2394 nvpair_type(pair) != DATA_TYPE_STRING)
9babb374
BB		 2395 return (EINVAL);
2396
c65aa5b2
BB		 2397 if ((error = zfs_secpolicy_write_perms(fsname,
2398 ZFS_DELEG_PERM_USERPROP, CRED())))
9babb374
BB		 2399 return (error);
2400
2401 if (strlen(propname) >= ZAP_MAXNAMELEN)
2402 return (ENAMETOOLONG);
2403
428870ff 2404 VERIFY(nvpair_value_string(pair, &valstr) == 0);
9babb374
BB		 2405 if (strlen(valstr) >= ZAP_MAXVALUELEN)
2406 return (E2BIG);
2407 }
34dc7c2f
BB		 2408 return (0);
2409}
2410
428870ff
BB		 2411static void
2412props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops)
2413{
2414 nvpair_t *pair;
2415
2416 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2417
2418 pair = NULL;
2419 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) {
2420 if (nvlist_exists(skipped, nvpair_name(pair)))
2421 continue;
2422
2423 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0);
2424 }
2425}
2426
2427static int
2428clear_received_props(objset_t *os, const char *fs, nvlist_t *props,
2429 nvlist_t *skipped)
2430{
2431 int err = 0;
2432 nvlist_t *cleared_props = NULL;
2433 props_skip(props, skipped, &cleared_props);
2434 if (!nvlist_empty(cleared_props)) {
2435 /*
2436 * Acts on local properties until the dataset has received
2437 * properties at least once on or after SPA_VERSION_RECVD_PROPS.
2438 */
2439 zprop_source_t flags = (ZPROP_SRC_NONE |
2440 (dsl_prop_get_hasrecvd(os) ? ZPROP_SRC_RECEIVED : 0));
2441 err = zfs_set_prop_nvlist(fs, flags, cleared_props, NULL);
2442 }
2443 nvlist_free(cleared_props);
2444 return (err);
2445}
2446
34dc7c2f
BB		 2447/*
2448 * inputs:
2449 * zc_name name of filesystem
9babb374 2450 * zc_value name of property to set
34dc7c2f 2451 * zc_nvlist_src{_size} nvlist of properties to apply
428870ff 2452 * zc_cookie received properties flag
34dc7c2f 2453 *
428870ff
BB		 2454 * outputs:
2455 * zc_nvlist_dst{_size} error for each unapplied received property
34dc7c2f
BB		 2456 */
2457static int
2458zfs_ioc_set_prop(zfs_cmd_t *zc)
2459{
2460 nvlist_t *nvl;
428870ff
BB		 2461 boolean_t received = zc->zc_cookie;
2462 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED :
2463 ZPROP_SRC_LOCAL);
2464 nvlist_t *errors = NULL;
34dc7c2f
BB		 2465 int error;
2466
2467 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
9babb374 2468 zc->zc_iflags, &nvl)) != 0)
34dc7c2f
BB		 2469 return (error);
2470
428870ff 2471 if (received) {
b128c09f
BB		 2472 nvlist_t *origprops;
2473 objset_t *os;
2474
428870ff
BB		 2475 if (dmu_objset_hold(zc->zc_name, FTAG, &os) == 0) {
2476 if (dsl_prop_get_received(os, &origprops) == 0) {
2477 (void) clear_received_props(os,
2478 zc->zc_name, origprops, nvl);
b128c09f
BB		 2479 nvlist_free(origprops);
2480 }
b128c09f 2481
428870ff
BB		 2482 dsl_prop_set_hasrecvd(os);
2483 dmu_objset_rele(os, FTAG);
2484 }
b128c09f
BB		 2485 }
2486
428870ff 2487 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, &errors);
34dc7c2f 2488
b8864a23 2489 if (zc->zc_nvlist_dst != 0 && errors != NULL) {
428870ff
BB		 2490 (void) put_nvlist(zc, errors);
2491 }
2492
2493 nvlist_free(errors);
34dc7c2f
BB		 2494 nvlist_free(nvl);
2495 return (error);
2496}
2497
2498/*
2499 * inputs:
2500 * zc_name name of filesystem
2501 * zc_value name of property to inherit
428870ff 2502 * zc_cookie revert to received value if TRUE
34dc7c2f
BB		 2503 *
2504 * outputs: none
2505 */
2506static int
2507zfs_ioc_inherit_prop(zfs_cmd_t *zc)
2508{
428870ff
BB		 2509 const char *propname = zc->zc_value;
2510 zfs_prop_t prop = zfs_name_to_prop(propname);
2511 boolean_t received = zc->zc_cookie;
2512 zprop_source_t source = (received
2513 ? ZPROP_SRC_NONE /* revert to received value, if any */
2514 : ZPROP_SRC_INHERITED); /* explicitly inherit */
2515
2516 if (received) {
2517 nvlist_t *dummy;
2518 nvpair_t *pair;
2519 zprop_type_t type;
2520 int err;
2521
2522 /*
2523 * zfs_prop_set_special() expects properties in the form of an
2524 * nvpair with type info.
2525 */
2526 if (prop == ZPROP_INVAL) {
2527 if (!zfs_prop_user(propname))
2528 return (EINVAL);
2529
2530 type = PROP_TYPE_STRING;
2531 } else if (prop == ZFS_PROP_VOLSIZE ||
2532 prop == ZFS_PROP_VERSION) {
2533 return (EINVAL);
2534 } else {
2535 type = zfs_prop_get_type(prop);
2536 }
2537
2538 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2539
2540 switch (type) {
2541 case PROP_TYPE_STRING:
2542 VERIFY(0 == nvlist_add_string(dummy, propname, ""));
2543 break;
2544 case PROP_TYPE_NUMBER:
2545 case PROP_TYPE_INDEX:
2546 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0));
2547 break;
2548 default:
2549 nvlist_free(dummy);
2550 return (EINVAL);
2551 }
2552
2553 pair = nvlist_next_nvpair(dummy, NULL);
2554 err = zfs_prop_set_special(zc->zc_name, source, pair);
2555 nvlist_free(dummy);
2556 if (err != -1)
2557 return (err); /* special property already handled */
2558 } else {
2559 /*
2560 * Only check this in the non-received case. We want to allow
2561 * 'inherit -S' to revert non-inheritable properties like quota
2562 * and reservation to the received or default values even though
2563 * they are not considered inheritable.
2564 */
2565 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop))
2566 return (EINVAL);
2567 }
2568
34dc7c2f 2569 /* the property name has been validated by zfs_secpolicy_inherit() */
428870ff 2570 return (dsl_prop_set(zc->zc_name, zc->zc_value, source, 0, 0, NULL));
34dc7c2f
BB		 2571}
2572
2573static int
2574zfs_ioc_pool_set_props(zfs_cmd_t *zc)
2575{
2576 nvlist_t *props;
2577 spa_t *spa;
2578 int error;
428870ff 2579 nvpair_t *pair;
34dc7c2f 2580
c65aa5b2
BB		 2581 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2582 zc->zc_iflags, &props)))
34dc7c2f
BB		 2583 return (error);
2584
d164b209
BB		 2585 /*
2586 * If the only property is the configfile, then just do a spa_lookup()
2587 * to handle the faulted case.
2588 */
428870ff
BB		 2589 pair = nvlist_next_nvpair(props, NULL);
2590 if (pair != NULL && strcmp(nvpair_name(pair),
d164b209 2591 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 &&
428870ff 2592 nvlist_next_nvpair(props, pair) == NULL) {
d164b209
BB		 2593 mutex_enter(&spa_namespace_lock);
2594 if ((spa = spa_lookup(zc->zc_name)) != NULL) {
2595 spa_configfile_set(spa, props, B_FALSE);
2596 spa_config_sync(spa, B_FALSE, B_TRUE);
2597 }
2598 mutex_exit(&spa_namespace_lock);
428870ff
BB		 2599 if (spa != NULL) {
2600 nvlist_free(props);
d164b209 2601 return (0);
428870ff 2602 }
d164b209
BB		 2603 }
2604
34dc7c2f
BB		 2605 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2606 nvlist_free(props);
2607 return (error);
2608 }
2609
2610 error = spa_prop_set(spa, props);
2611
2612 nvlist_free(props);
2613 spa_close(spa, FTAG);
2614
2615 return (error);
2616}
2617
2618static int
2619zfs_ioc_pool_get_props(zfs_cmd_t *zc)
2620{
2621 spa_t *spa;
2622 int error;
2623 nvlist_t *nvp = NULL;
2624
d164b209
BB		 2625 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2626 /*
2627 * If the pool is faulted, there may be properties we can still
2628 * get (such as altroot and cachefile), so attempt to get them
2629 * anyway.
2630 */
2631 mutex_enter(&spa_namespace_lock);
2632 if ((spa = spa_lookup(zc->zc_name)) != NULL)
2633 error = spa_prop_get(spa, &nvp);
2634 mutex_exit(&spa_namespace_lock);
2635 } else {
2636 error = spa_prop_get(spa, &nvp);
2637 spa_close(spa, FTAG);
2638 }
34dc7c2f 2639
b8864a23 2640 if (error == 0 && zc->zc_nvlist_dst != 0)
34dc7c2f
BB		 2641 error = put_nvlist(zc, nvp);
2642 else
2643 error = EFAULT;
2644
d164b209 2645 nvlist_free(nvp);
34dc7c2f
BB		 2646 return (error);
2647}
2648
60101509
BB		 2649/*
2650 * inputs:
2651 * zc_name name of volume
2652 *
2653 * outputs: none
2654 */
2655static int
2656zfs_ioc_create_minor(zfs_cmd_t *zc)
2657{
2658 return (zvol_create_minor(zc->zc_name));
2659}
2660
2661/*
2662 * inputs:
2663 * zc_name name of volume
2664 *
2665 * outputs: none
2666 */
2667static int
2668zfs_ioc_remove_minor(zfs_cmd_t *zc)
2669{
2670 return (zvol_remove_minor(zc->zc_name));
2671}
2672
34dc7c2f
BB		 2673/*
2674 * inputs:
2675 * zc_name name of filesystem
2676 * zc_nvlist_src{_size} nvlist of delegated permissions
2677 * zc_perm_action allow/unallow flag
2678 *
2679 * outputs: none
2680 */
2681static int
2682zfs_ioc_set_fsacl(zfs_cmd_t *zc)
2683{
2684 int error;
2685 nvlist_t *fsaclnv = NULL;
2686
2687 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
9babb374 2688 zc->zc_iflags, &fsaclnv)) != 0)
34dc7c2f
BB		 2689 return (error);
2690
2691 /*
2692 * Verify nvlist is constructed correctly
2693 */
2694 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
2695 nvlist_free(fsaclnv);
2696 return (EINVAL);
2697 }
2698
2699 /*
2700 * If we don't have PRIV_SYS_MOUNT, then validate
2701 * that user is allowed to hand out each permission in
2702 * the nvlist(s)
2703 */
2704
2705 error = secpolicy_zfs(CRED());
2706 if (error) {
2707 if (zc->zc_perm_action == B_FALSE) {
2708 error = dsl_deleg_can_allow(zc->zc_name,
2709 fsaclnv, CRED());
2710 } else {
2711 error = dsl_deleg_can_unallow(zc->zc_name,
2712 fsaclnv, CRED());
2713 }
2714 }
2715
2716 if (error == 0)
2717 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action);
2718
2719 nvlist_free(fsaclnv);
2720 return (error);
2721}
2722
2723/*
2724 * inputs:
2725 * zc_name name of filesystem
2726 *
2727 * outputs:
2728 * zc_nvlist_src{_size} nvlist of delegated permissions
2729 */
2730static int
2731zfs_ioc_get_fsacl(zfs_cmd_t *zc)
2732{
2733 nvlist_t *nvp;
2734 int error;
2735
2736 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) {
2737 error = put_nvlist(zc, nvp);
2738 nvlist_free(nvp);
2739 }
2740
2741 return (error);
2742}
2743
34dc7c2f
BB		 2744/* ARGSUSED */
2745static void
2746zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
2747{
2748 zfs_creat_t *zct = arg;
2749
2750 zfs_create_fs(os, cr, zct->zct_zplprops, tx);
2751}
2752
2753#define ZFS_PROP_UNDEFINED ((uint64_t)-1)
2754
2755/*
2756 * inputs:
b128c09f
BB		 2757 * createprops list of properties requested by creator
2758 * default_zplver zpl version to use if unspecified in createprops
2759 * fuids_ok fuids allowed in this version of the spa?
2760 * os parent objset pointer (NULL if root fs)
34dc7c2f
BB		 2761 *
2762 * outputs:
2763 * zplprops values for the zplprops we attach to the master node object
b128c09f 2764 * is_ci true if requested file system will be purely case-insensitive
34dc7c2f
BB		 2765 *
2766 * Determine the settings for utf8only, normalization and
2767 * casesensitivity. Specific values may have been requested by the
2768 * creator and/or we can inherit values from the parent dataset. If
2769 * the file system is of too early a vintage, a creator can not
2770 * request settings for these properties, even if the requested
2771 * setting is the default value. We don't actually want to create dsl
2772 * properties for these, so remove them from the source nvlist after
2773 * processing.
2774 */
2775static int
9babb374 2776zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver,
428870ff
BB		 2777 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops,
2778 nvlist_t *zplprops, boolean_t *is_ci)
34dc7c2f 2779{
34dc7c2f
BB		 2780 uint64_t sense = ZFS_PROP_UNDEFINED;
2781 uint64_t norm = ZFS_PROP_UNDEFINED;
2782 uint64_t u8 = ZFS_PROP_UNDEFINED;
b129c659 2783 int error;
34dc7c2f
BB		 2784
2785 ASSERT(zplprops != NULL);
2786
34dc7c2f
BB		 2787 /*
2788 * Pull out creator prop choices, if any.
2789 */
2790 if (createprops) {
b128c09f
BB		 2791 (void) nvlist_lookup_uint64(createprops,
2792 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver);
34dc7c2f
BB		 2793 (void) nvlist_lookup_uint64(createprops,
2794 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm);
2795 (void) nvlist_remove_all(createprops,
2796 zfs_prop_to_name(ZFS_PROP_NORMALIZE));
2797 (void) nvlist_lookup_uint64(createprops,
2798 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8);
2799 (void) nvlist_remove_all(createprops,
2800 zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
2801 (void) nvlist_lookup_uint64(createprops,
2802 zfs_prop_to_name(ZFS_PROP_CASE), &sense);
2803 (void) nvlist_remove_all(createprops,
2804 zfs_prop_to_name(ZFS_PROP_CASE));
2805 }
2806
2807 /*
b128c09f
BB		 2808 * If the zpl version requested is whacky or the file system
2809 * or pool is version is too "young" to support normalization
2810 * and the creator tried to set a value for one of the props,
2811 * error out.
34dc7c2f 2812 */
b128c09f
BB		 2813 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) ||
2814 (zplver >= ZPL_VERSION_FUID && !fuids_ok) ||
428870ff 2815 (zplver >= ZPL_VERSION_SA && !sa_ok) ||
b128c09f 2816 (zplver < ZPL_VERSION_NORMALIZATION &&
34dc7c2f 2817 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
b128c09f 2818 sense != ZFS_PROP_UNDEFINED)))
34dc7c2f
BB		 2819 return (ENOTSUP);
2820
2821 /*
2822 * Put the version in the zplprops
2823 */
2824 VERIFY(nvlist_add_uint64(zplprops,
2825 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
2826
b129c659
MM		 2827 if (norm == ZFS_PROP_UNDEFINED &&
2828 (error = zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm)) != 0)
2829 return (error);
34dc7c2f
BB		 2830 VERIFY(nvlist_add_uint64(zplprops,
2831 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
2832
2833 /*
2834 * If we're normalizing, names must always be valid UTF-8 strings.
2835 */
2836 if (norm)
2837 u8 = 1;
b129c659
MM		 2838 if (u8 == ZFS_PROP_UNDEFINED &&
2839 (error = zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8)) != 0)
2840 return (error);
34dc7c2f
BB		 2841 VERIFY(nvlist_add_uint64(zplprops,
2842 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
2843
b129c659
MM		 2844 if (sense == ZFS_PROP_UNDEFINED &&
2845 (error = zfs_get_zplprop(os, ZFS_PROP_CASE, &sense)) != 0)
2846 return (error);
34dc7c2f
BB		 2847 VERIFY(nvlist_add_uint64(zplprops,
2848 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
2849
2850 if (is_ci)
2851 *is_ci = (sense == ZFS_CASE_INSENSITIVE);
2852
34dc7c2f
BB		 2853 return (0);
2854}
2855
b128c09f
BB		 2856static int
2857zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
2858 nvlist_t *zplprops, boolean_t *is_ci)
2859{
428870ff 2860 boolean_t fuids_ok, sa_ok;
b128c09f
BB		 2861 uint64_t zplver = ZPL_VERSION;
2862 objset_t *os = NULL;
2863 char parentname[MAXNAMELEN];
2864 char *cp;
428870ff
BB		 2865 spa_t *spa;
2866 uint64_t spa_vers;
b128c09f
BB		 2867 int error;
2868
2869 (void) strlcpy(parentname, dataset, sizeof (parentname));
2870 cp = strrchr(parentname, '/');
2871 ASSERT(cp != NULL);
2872 cp[0] = '\0';
2873
428870ff
BB		 2874 if ((error = spa_open(dataset, &spa, FTAG)) != 0)
2875 return (error);
2876
2877 spa_vers = spa_version(spa);
2878 spa_close(spa, FTAG);
2879
2880 zplver = zfs_zpl_version_map(spa_vers);
2881 fuids_ok = (zplver >= ZPL_VERSION_FUID);
2882 sa_ok = (zplver >= ZPL_VERSION_SA);
b128c09f
BB		 2883
2884 /*
2885 * Open parent object set so we can inherit zplprop values.
2886 */
428870ff 2887 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0)
b128c09f
BB		 2888 return (error);
2889
428870ff 2890 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops,
b128c09f 2891 zplprops, is_ci);
428870ff 2892 dmu_objset_rele(os, FTAG);
b128c09f
BB		 2893 return (error);
2894}
2895
2896static int
2897zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops,
2898 nvlist_t *zplprops, boolean_t *is_ci)
2899{
428870ff
BB		 2900 boolean_t fuids_ok;
2901 boolean_t sa_ok;
b128c09f
BB		 2902 uint64_t zplver = ZPL_VERSION;
2903 int error;
2904
428870ff
BB		 2905 zplver = zfs_zpl_version_map(spa_vers);
2906 fuids_ok = (zplver >= ZPL_VERSION_FUID);
2907 sa_ok = (zplver >= ZPL_VERSION_SA);
b128c09f 2908
428870ff
BB		 2909 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok,
2910 createprops, zplprops, is_ci);
b128c09f
BB		 2911 return (error);
2912}
2913
34dc7c2f
BB		 2914/*
2915 * inputs:
2916 * zc_objset_type type of objset to create (fs vs zvol)
2917 * zc_name name of new objset
2918 * zc_value name of snapshot to clone from (may be empty)
2919 * zc_nvlist_src{_size} nvlist of properties to apply
2920 *
2921 * outputs: none
2922 */
2923static int
2924zfs_ioc_create(zfs_cmd_t *zc)
2925{
2926 objset_t *clone;
2927 int error = 0;
2928 zfs_creat_t zct;
2929 nvlist_t *nvprops = NULL;
2930 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
2931 dmu_objset_type_t type = zc->zc_objset_type;
2932
2933 switch (type) {
2934
2935 case DMU_OST_ZFS:
2936 cbfunc = zfs_create_cb;
2937 break;
2938
2939 case DMU_OST_ZVOL:
2940 cbfunc = zvol_create_cb;
2941 break;
2942
2943 default:
2944 cbfunc = NULL;
2945 break;
2946 }
2947 if (strchr(zc->zc_name, '@') ||
2948 strchr(zc->zc_name, '%'))
2949 return (EINVAL);
2950
b8864a23 2951 if (zc->zc_nvlist_src != 0 &&
34dc7c2f 2952 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
9babb374 2953 zc->zc_iflags, &nvprops)) != 0)
34dc7c2f
BB		 2954 return (error);
2955
2956 zct.zct_zplprops = NULL;
2957 zct.zct_props = nvprops;
2958
2959 if (zc->zc_value[0] != '\0') {
2960 /*
2961 * We're creating a clone of an existing snapshot.
2962 */
2963 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
2964 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) {
2965 nvlist_free(nvprops);
2966 return (EINVAL);
2967 }
2968
428870ff 2969 error = dmu_objset_hold(zc->zc_value, FTAG, &clone);
34dc7c2f
BB		 2970 if (error) {
2971 nvlist_free(nvprops);
2972 return (error);
2973 }
2974
428870ff
BB		 2975 error = dmu_objset_clone(zc->zc_name, dmu_objset_ds(clone), 0);
2976 dmu_objset_rele(clone, FTAG);
34dc7c2f 2977 if (error) {
34dc7c2f
BB		 2978 nvlist_free(nvprops);
2979 return (error);
2980 }
34dc7c2f
BB		 2981 } else {
2982 boolean_t is_insensitive = B_FALSE;
2983
2984 if (cbfunc == NULL) {
2985 nvlist_free(nvprops);
2986 return (EINVAL);
2987 }
2988
2989 if (type == DMU_OST_ZVOL) {
2990 uint64_t volsize, volblocksize;
2991
2992 if (nvprops == NULL ||
2993 nvlist_lookup_uint64(nvprops,
2994 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
2995 &volsize) != 0) {
2996 nvlist_free(nvprops);
2997 return (EINVAL);
2998 }
2999
3000 if ((error = nvlist_lookup_uint64(nvprops,
3001 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
3002 &volblocksize)) != 0 && error != ENOENT) {
3003 nvlist_free(nvprops);
3004 return (EINVAL);
3005 }
3006
3007 if (error != 0)
3008 volblocksize = zfs_prop_default_numeric(
3009 ZFS_PROP_VOLBLOCKSIZE);
3010
3011 if ((error = zvol_check_volblocksize(
3012 volblocksize)) != 0 ||
3013 (error = zvol_check_volsize(volsize,
3014 volblocksize)) != 0) {
3015 nvlist_free(nvprops);
3016 return (error);
3017 }
3018 } else if (type == DMU_OST_ZFS) {
34dc7c2f
BB		 3019 int error;
3020
34dc7c2f
BB		 3021 /*
3022 * We have to have normalization and
3023 * case-folding flags correct when we do the
3024 * file system creation, so go figure them out
3025 * now.
3026 */
3027 VERIFY(nvlist_alloc(&zct.zct_zplprops,
3028 NV_UNIQUE_NAME, KM_SLEEP) == 0);
3029 error = zfs_fill_zplprops(zc->zc_name, nvprops,
b128c09f 3030 zct.zct_zplprops, &is_insensitive);
34dc7c2f
BB		 3031 if (error != 0) {
3032 nvlist_free(nvprops);
3033 nvlist_free(zct.zct_zplprops);
3034 return (error);
3035 }
3036 }
428870ff 3037 error = dmu_objset_create(zc->zc_name, type,
34dc7c2f
BB		 3038 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
3039 nvlist_free(zct.zct_zplprops);
3040 }
3041
3042 /*
3043 * It would be nice to do this atomically.
3044 */
3045 if (error == 0) {
428870ff
BB		 3046 error = zfs_set_prop_nvlist(zc->zc_name, ZPROP_SRC_LOCAL,
3047 nvprops, NULL);
3048 if (error != 0)
45d1cae3 3049 (void) dmu_objset_destroy(zc->zc_name, B_FALSE);
34dc7c2f
BB		 3050 }
3051 nvlist_free(nvprops);
3052 return (error);
3053}
3054
3055/*
3056 * inputs:
3057 * zc_name name of filesystem
3058 * zc_value short name of snapshot
3059 * zc_cookie recursive flag
9babb374 3060 * zc_nvlist_src[_size] property list
34dc7c2f 3061 *
428870ff
BB		 3062 * outputs:
3063 * zc_value short snapname (i.e. part after the '@')
34dc7c2f
BB		 3064 */
3065static int
3066zfs_ioc_snapshot(zfs_cmd_t *zc)
3067{
b128c09f
BB		 3068 nvlist_t *nvprops = NULL;
3069 int error;
3070 boolean_t recursive = zc->zc_cookie;
3071
34dc7c2f
BB		 3072 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
3073 return (EINVAL);
b128c09f 3074
b8864a23 3075 if (zc->zc_nvlist_src != 0 &&
b128c09f 3076 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
9babb374 3077 zc->zc_iflags, &nvprops)) != 0)
b128c09f
BB		 3078 return (error);
3079
9babb374
BB		 3080 error = zfs_check_userprops(zc->zc_name, nvprops);
3081 if (error)
3082 goto out;
b128c09f 3083
428870ff 3084 if (!nvlist_empty(nvprops) &&
9babb374
BB		 3085 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) {
3086 error = ENOTSUP;
3087 goto out;
b128c09f 3088 }
9babb374 3089
572e2857
BB		 3090 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, NULL,
3091 nvprops, recursive, B_FALSE, -1);
9babb374
BB		 3092
3093out:
b128c09f
BB		 3094 nvlist_free(nvprops);
3095 return (error);
34dc7c2f
BB		 3096}
3097
ebe7e575
BB		 3098/*
3099 * inputs:
3100 * name dataset name, or when 'arg == NULL' the full snapshot name
3101 * arg short snapshot name (i.e. part after the '@')
3102 */
34dc7c2f 3103int
428870ff 3104zfs_unmount_snap(const char *name, void *arg)
34dc7c2f 3105{
ebe7e575
BB		 3106 zfs_sb_t *zsb = NULL;
3107 char *dsname;
3108 char *snapname;
3109 char *fullname;
3110 char *ptr;
3111 int error;
34dc7c2f 3112
b128c09f 3113 if (arg) {
ebe7e575
BB		 3114 dsname = strdup(name);
3115 snapname = strdup(arg);
3116 } else {
3117 ptr = strchr(name, '@');
3118 if (ptr) {
3119 dsname = strdup(name);
3120 dsname[ptr - name] = '\0';
3121 snapname = strdup(ptr + 1);
3122 } else {
3123 return (0);
3124 }
34dc7c2f
BB		 3125 }
3126
ebe7e575 3127 fullname = kmem_asprintf("%s@%s", dsname, snapname);
34dc7c2f 3128
ebe7e575
BB		 3129 error = zfs_sb_hold(dsname, FTAG, &zsb, B_FALSE);
3130 if (error == 0) {
3131 error = zfsctl_unmount_snapshot(zsb, fullname, MNT_FORCE);
3132 zfs_sb_rele(zsb, FTAG);
3133
3134 /* Allow ENOENT for consistency with upstream */
3135 if (error == ENOENT)
3136 error = 0;
34dc7c2f 3137 }
ebe7e575
BB		 3138
3139 strfree(dsname);
3140 strfree(snapname);
3141 strfree(fullname);
3142
3143 return (error);
34dc7c2f
BB		 3144}
3145
3146/*
3147 * inputs:
330d06f9
MA		 3148 * zc_name name of filesystem, snaps must be under it
3149 * zc_nvlist_src[_size] full names of snapshots to destroy
45d1cae3 3150 * zc_defer_destroy mark for deferred destroy
34dc7c2f 3151 *
330d06f9
MA		 3152 * outputs:
3153 * zc_name on failure, name of failed snapshot
34dc7c2f
BB		 3154 */
3155static int
330d06f9 3156zfs_ioc_destroy_snaps_nvl(zfs_cmd_t *zc)
34dc7c2f 3157{
330d06f9
MA		 3158 int err, len;
3159 nvlist_t *nvl;
3160 nvpair_t *pair;
34dc7c2f 3161
330d06f9
MA		 3162 if ((err = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
3163 zc->zc_iflags, &nvl)) != 0)
34dc7c2f 3164 return (err);
330d06f9
MA		 3165
3166 len = strlen(zc->zc_name);
3167 for (pair = nvlist_next_nvpair(nvl, NULL); pair != NULL;
3168 pair = nvlist_next_nvpair(nvl, pair)) {
3169 const char *name = nvpair_name(pair);
3170 /*
3171 * The snap name must be underneath the zc_name. This ensures
3172 * that our permission checks were legitimate.
3173 */
3174 if (strncmp(zc->zc_name, name, len) != 0 ||
3175 (name[len] != '@' && name[len] != '/')) {
3176 nvlist_free(nvl);
3177 return (EINVAL);
3178 }
3179
3180 (void) zfs_unmount_snap(name, NULL);
4ca9a436 3181 (void) zvol_remove_minor(name);
330d06f9
MA		 3182 }
3183
3184 err = dmu_snapshots_destroy_nvl(nvl, zc->zc_defer_destroy,
3185 zc->zc_name);
3186 nvlist_free(nvl);
3187 return (err);
34dc7c2f
BB		 3188}
3189
3190/*
3191 * inputs:
3192 * zc_name name of dataset to destroy
3193 * zc_objset_type type of objset
45d1cae3 3194 * zc_defer_destroy mark for deferred destroy
34dc7c2f
BB		 3195 *
3196 * outputs: none
3197 */
3198static int
3199zfs_ioc_destroy(zfs_cmd_t *zc)
3200{
428870ff 3201 int err;
34dc7c2f 3202 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) {
428870ff 3203 err = zfs_unmount_snap(zc->zc_name, NULL);
34dc7c2f
BB		 3204 if (err)
3205 return (err);
3206 }
3207
428870ff
BB		 3208 err = dmu_objset_destroy(zc->zc_name, zc->zc_defer_destroy);
3209 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0)
3210 (void) zvol_remove_minor(zc->zc_name);
3211 return (err);
34dc7c2f
BB		 3212}
3213
3214/*
3215 * inputs:
3216 * zc_name name of dataset to rollback (to most recent snapshot)
3217 *
3218 * outputs: none
3219 */
3220static int
3221zfs_ioc_rollback(zfs_cmd_t *zc)
3222{
428870ff 3223 dsl_dataset_t *ds, *clone;
34dc7c2f 3224 int error;
3558fd73 3225 zfs_sb_t *zsb;
428870ff
BB		 3226 char *clone_name;
3227
3228 error = dsl_dataset_hold(zc->zc_name, FTAG, &ds);
3229 if (error)
3230 return (error);
3231
3232 /* must not be a snapshot */
3233 if (dsl_dataset_is_snapshot(ds)) {
3234 dsl_dataset_rele(ds, FTAG);
3235 return (EINVAL);
3236 }
3237
3238 /* must have a most recent snapshot */
3239 if (ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) {
3240 dsl_dataset_rele(ds, FTAG);
3241 return (EINVAL);
3242 }
34dc7c2f
BB		 3243
3244 /*
428870ff 3245 * Create clone of most recent snapshot.
34dc7c2f 3246 */
428870ff
BB		 3247 clone_name = kmem_asprintf("%s/%%rollback", zc->zc_name);
3248 error = dmu_objset_clone(clone_name, ds->ds_prev, DS_FLAG_INCONSISTENT);
34dc7c2f 3249 if (error)
428870ff 3250 goto out;
34dc7c2f 3251
428870ff
BB		 3252 error = dsl_dataset_own(clone_name, B_TRUE, FTAG, &clone);
3253 if (error)
3254 goto out;
34dc7c2f 3255
428870ff
BB		 3256 /*
3257 * Do clone swap.
3258 */
3558fd73
BB		 3259 if (get_zfs_sb(zc->zc_name, &zsb) == 0) {
3260 error = zfs_suspend_fs(zsb);
34dc7c2f
BB		 3261 if (error == 0) {
3262 int resume_err;
3263
428870ff
BB		 3264 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) {
3265 error = dsl_dataset_clone_swap(clone, ds,
3266 B_TRUE);
3267 dsl_dataset_disown(ds, FTAG);
3268 ds = NULL;
3269 } else {
3270 error = EBUSY;
3271 }
3558fd73 3272 resume_err = zfs_resume_fs(zsb, zc->zc_name);
34dc7c2f 3273 error = error ? error : resume_err;
34dc7c2f 3274 }
2cf7f52b 3275 deactivate_super(zsb->z_sb);
34dc7c2f 3276 } else {
428870ff
BB		 3277 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) {
3278 error = dsl_dataset_clone_swap(clone, ds, B_TRUE);
3279 dsl_dataset_disown(ds, FTAG);
3280 ds = NULL;
3281 } else {
3282 error = EBUSY;
3283 }
34dc7c2f 3284 }
34dc7c2f 3285
428870ff
BB		 3286 /*
3287 * Destroy clone (which also closes it).
3288 */
3289 (void) dsl_dataset_destroy(clone, FTAG, B_FALSE);
3290
3291out:
3292 strfree(clone_name);
3293 if (ds)
3294 dsl_dataset_rele(ds, FTAG);
34dc7c2f
BB		 3295 return (error);
3296}
3297
3298/*
3299 * inputs:
3300 * zc_name old name of dataset
3301 * zc_value new name of dataset
3302 * zc_cookie recursive flag (only valid for snapshots)
3303 *
3304 * outputs: none
3305 */
3306static int
3307zfs_ioc_rename(zfs_cmd_t *zc)
3308{
3309 boolean_t recursive = zc->zc_cookie & 1;
95c73795 3310 int err;
34dc7c2f
BB		 3311
3312 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
3313 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3314 strchr(zc->zc_value, '%'))
3315 return (EINVAL);
3316
3317 /*
3318 * Unmount snapshot unless we're doing a recursive rename,
3319 * in which case the dataset code figures out which snapshots
3320 * to unmount.
3321 */
3322 if (!recursive && strchr(zc->zc_name, '@') != NULL &&
3323 zc->zc_objset_type == DMU_OST_ZFS) {
95c73795 3324 err = zfs_unmount_snap(zc->zc_name, NULL);
34dc7c2f
BB		 3325 if (err)
3326 return (err);
3327 }
95c73795
BB		 3328
3329 err = dmu_objset_rename(zc->zc_name, zc->zc_value, recursive);
3330 if ((err == 0) && (zc->zc_objset_type == DMU_OST_ZVOL)) {
428870ff 3331 (void) zvol_remove_minor(zc->zc_name);
95c73795
BB		 3332 (void) zvol_create_minor(zc->zc_value);
3333 }
3334
3335 return (err);
34dc7c2f
BB		 3336}
3337
428870ff
BB		 3338static int
3339zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr)
3340{
3341 const char *propname = nvpair_name(pair);
3342 boolean_t issnap = (strchr(dsname, '@') != NULL);
3343 zfs_prop_t prop = zfs_name_to_prop(propname);
3344 uint64_t intval;
3345 int err;
3346
3347 if (prop == ZPROP_INVAL) {
3348 if (zfs_prop_user(propname)) {
c65aa5b2
BB		 3349 if ((err = zfs_secpolicy_write_perms(dsname,
3350 ZFS_DELEG_PERM_USERPROP, cr)))
428870ff
BB		 3351 return (err);
3352 return (0);
3353 }
3354
3355 if (!issnap && zfs_prop_userquota(propname)) {
3356 const char *perm = NULL;
3357 const char *uq_prefix =
3358 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA];
3359 const char *gq_prefix =
3360 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA];
3361
3362 if (strncmp(propname, uq_prefix,
3363 strlen(uq_prefix)) == 0) {
3364 perm = ZFS_DELEG_PERM_USERQUOTA;
3365 } else if (strncmp(propname, gq_prefix,
3366 strlen(gq_prefix)) == 0) {
3367 perm = ZFS_DELEG_PERM_GROUPQUOTA;
3368 } else {
3369 /* USERUSED and GROUPUSED are read-only */
3370 return (EINVAL);
3371 }
3372
c65aa5b2 3373 if ((err = zfs_secpolicy_write_perms(dsname, perm, cr)))
428870ff
BB		 3374 return (err);
3375 return (0);
3376 }
3377
3378 return (EINVAL);
3379 }
3380
3381 if (issnap)
3382 return (EINVAL);
3383
3384 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
3385 /*
3386 * dsl_prop_get_all_impl() returns properties in this
3387 * format.
3388 */
3389 nvlist_t *attrs;
3390 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
3391 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3392 &pair) == 0);
3393 }
3394
3395 /*
3396 * Check that this value is valid for this pool version
3397 */
3398 switch (prop) {
3399 case ZFS_PROP_COMPRESSION:
3400 /*
3401 * If the user specified gzip compression, make sure
3402 * the SPA supports it. We ignore any errors here since
3403 * we'll catch them later.
3404 */
3405 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3406 nvpair_value_uint64(pair, &intval) == 0) {
3407 if (intval >= ZIO_COMPRESS_GZIP_1 &&
3408 intval <= ZIO_COMPRESS_GZIP_9 &&
3409 zfs_earlier_version(dsname,
3410 SPA_VERSION_GZIP_COMPRESSION)) {
3411 return (ENOTSUP);
3412 }
3413
3414 if (intval == ZIO_COMPRESS_ZLE &&
3415 zfs_earlier_version(dsname,
3416 SPA_VERSION_ZLE_COMPRESSION))
3417 return (ENOTSUP);
3418
3419 /*
3420 * If this is a bootable dataset then
3421 * verify that the compression algorithm
3422 * is supported for booting. We must return
3423 * something other than ENOTSUP since it
3424 * implies a downrev pool version.
3425 */
3426 if (zfs_is_bootfs(dsname) &&
3427 !BOOTFS_COMPRESS_VALID(intval)) {
3428 return (ERANGE);
3429 }
3430 }
3431 break;
3432
3433 case ZFS_PROP_COPIES:
3434 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS))
3435 return (ENOTSUP);
3436 break;
3437
3438 case ZFS_PROP_DEDUP:
3439 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP))
3440 return (ENOTSUP);
3441 break;
3442
3443 case ZFS_PROP_SHARESMB:
3444 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID))
3445 return (ENOTSUP);
3446 break;
3447
3448 case ZFS_PROP_ACLINHERIT:
3449 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3450 nvpair_value_uint64(pair, &intval) == 0) {
3451 if (intval == ZFS_ACL_PASSTHROUGH_X &&
3452 zfs_earlier_version(dsname,
3453 SPA_VERSION_PASSTHROUGH_X))
3454 return (ENOTSUP);
3455 }
3456 break;
e75c13c3
BB		 3457 default:
3458 break;
428870ff
BB		 3459 }
3460
3461 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED()));
3462}
3463
3464/*
3465 * Removes properties from the given props list that fail permission checks
3466 * needed to clear them and to restore them in case of a receive error. For each
3467 * property, make sure we have both set and inherit permissions.
3468 *
3469 * Returns the first error encountered if any permission checks fail. If the
3470 * caller provides a non-NULL errlist, it also gives the complete list of names
3471 * of all the properties that failed a permission check along with the
3472 * corresponding error numbers. The caller is responsible for freeing the
3473 * returned errlist.
3474 *
3475 * If every property checks out successfully, zero is returned and the list
3476 * pointed at by errlist is NULL.
3477 */
3478static int
3479zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist)
b128c09f
BB		 3480{
3481 zfs_cmd_t *zc;
428870ff
BB		 3482 nvpair_t *pair, *next_pair;
3483 nvlist_t *errors;
3484 int err, rv = 0;
b128c09f
BB		 3485
3486 if (props == NULL)
428870ff
BB		 3487 return (0);
3488
3489 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
3490
d247f2a3 3491 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
b128c09f 3492 (void) strcpy(zc->zc_name, dataset);
428870ff
BB		 3493 pair = nvlist_next_nvpair(props, NULL);
3494 while (pair != NULL) {
3495 next_pair = nvlist_next_nvpair(props, pair);
3496
3497 (void) strcpy(zc->zc_value, nvpair_name(pair));
3498 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 ||
3499 (err = zfs_secpolicy_inherit(zc, CRED())) != 0) {
3500 VERIFY(nvlist_remove_nvpair(props, pair) == 0);
3501 VERIFY(nvlist_add_int32(errors,
3502 zc->zc_value, err) == 0);
3503 }
3504 pair = next_pair;
b128c09f
BB		 3505 }
3506 kmem_free(zc, sizeof (zfs_cmd_t));
428870ff
BB		 3507
3508 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
3509 nvlist_free(errors);
3510 errors = NULL;
3511 } else {
3512 VERIFY(nvpair_value_int32(pair, &rv) == 0);
3513 }
3514
3515 if (errlist == NULL)
3516 nvlist_free(errors);
3517 else
3518 *errlist = errors;
3519
3520 return (rv);
3521}
3522
3523static boolean_t
3524propval_equals(nvpair_t *p1, nvpair_t *p2)
3525{
3526 if (nvpair_type(p1) == DATA_TYPE_NVLIST) {
3527 /* dsl_prop_get_all_impl() format */
3528 nvlist_t *attrs;
3529 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0);
3530 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3531 &p1) == 0);
3532 }
3533
3534 if (nvpair_type(p2) == DATA_TYPE_NVLIST) {
3535 nvlist_t *attrs;
3536 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0);
3537 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3538 &p2) == 0);
3539 }
3540
3541 if (nvpair_type(p1) != nvpair_type(p2))
3542 return (B_FALSE);
3543
3544 if (nvpair_type(p1) == DATA_TYPE_STRING) {
3545 char *valstr1, *valstr2;
3546
3547 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0);
3548 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0);
3549 return (strcmp(valstr1, valstr2) == 0);
3550 } else {
3551 uint64_t intval1, intval2;
3552
3553 VERIFY(nvpair_value_uint64(p1, &intval1) == 0);
3554 VERIFY(nvpair_value_uint64(p2, &intval2) == 0);
3555 return (intval1 == intval2);
3556 }
b128c09f
BB		 3557}
3558
428870ff
BB		 3559/*
3560 * Remove properties from props if they are not going to change (as determined
3561 * by comparison with origprops). Remove them from origprops as well, since we
3562 * do not need to clear or restore properties that won't change.
3563 */
3564static void
3565props_reduce(nvlist_t *props, nvlist_t *origprops)
3566{
3567 nvpair_t *pair, *next_pair;
3568
3569 if (origprops == NULL)
3570 return; /* all props need to be received */
3571
3572 pair = nvlist_next_nvpair(props, NULL);
3573 while (pair != NULL) {
3574 const char *propname = nvpair_name(pair);
3575 nvpair_t *match;
3576
3577 next_pair = nvlist_next_nvpair(props, pair);
3578
3579 if ((nvlist_lookup_nvpair(origprops, propname,
3580 &match) != 0) || !propval_equals(pair, match))
3581 goto next; /* need to set received value */
3582
3583 /* don't clear the existing received value */
3584 (void) nvlist_remove_nvpair(origprops, match);
3585 /* don't bother receiving the property */
3586 (void) nvlist_remove_nvpair(props, pair);
3587next:
3588 pair = next_pair;
3589 }
3590}
3591
3592#ifdef DEBUG
3593static boolean_t zfs_ioc_recv_inject_err;
3594#endif
3595
34dc7c2f
BB		 3596/*
3597 * inputs:
3598 * zc_name name of containing filesystem
3599 * zc_nvlist_src{_size} nvlist of properties to apply
3600 * zc_value name of snapshot to create
3601 * zc_string name of clone origin (if DRR_FLAG_CLONE)
3602 * zc_cookie file descriptor to recv from
3603 * zc_begin_record the BEGIN record of the stream (not byteswapped)
3604 * zc_guid force flag
572e2857
BB		 3605 * zc_cleanup_fd cleanup-on-exit file descriptor
3606 * zc_action_handle handle for this guid/ds mapping (or zero on first call)
34dc7c2f
BB		 3607 *
3608 * outputs:
3609 * zc_cookie number of bytes read
428870ff
BB		 3610 * zc_nvlist_dst{_size} error for each unapplied received property
3611 * zc_obj zprop_errflags_t
572e2857 3612 * zc_action_handle handle for this guid/ds mapping
34dc7c2f
BB		 3613 */
3614static int
3615zfs_ioc_recv(zfs_cmd_t *zc)
3616{
3617 file_t *fp;
3618 objset_t *os;
3619 dmu_recv_cookie_t drc;
34dc7c2f 3620 boolean_t force = (boolean_t)zc->zc_guid;
428870ff
BB		 3621 int fd;
3622 int error = 0;
3623 int props_error = 0;
3624 nvlist_t *errors;
34dc7c2f 3625 offset_t off;
428870ff
BB		 3626 nvlist_t *props = NULL; /* sent properties */
3627 nvlist_t *origprops = NULL; /* existing properties */
34dc7c2f
BB		 3628 objset_t *origin = NULL;
3629 char *tosnap;
3630 char tofs[ZFS_MAXNAMELEN];
428870ff 3631 boolean_t first_recvd_props = B_FALSE;
34dc7c2f
BB		 3632
3633 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3634 strchr(zc->zc_value, '@') == NULL ||
3635 strchr(zc->zc_value, '%'))
3636 return (EINVAL);
3637
3638 (void) strcpy(tofs, zc->zc_value);
3639 tosnap = strchr(tofs, '@');
428870ff 3640 *tosnap++ = '\0';
34dc7c2f 3641
b8864a23 3642 if (zc->zc_nvlist_src != 0 &&
34dc7c2f 3643 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
9babb374 3644 zc->zc_iflags, &props)) != 0)
34dc7c2f
BB		 3645 return (error);
3646
3647 fd = zc->zc_cookie;
3648 fp = getf(fd);
3649 if (fp == NULL) {
3650 nvlist_free(props);
3651 return (EBADF);
3652 }
3653
428870ff
BB		 3654 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
3655
3656 if (props && dmu_objset_hold(tofs, FTAG, &os) == 0) {
3657 if ((spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS) &&
3658 !dsl_prop_get_hasrecvd(os)) {
3659 first_recvd_props = B_TRUE;
3660 }
3661
b128c09f 3662 /*
428870ff
BB		 3663 * If new received properties are supplied, they are to
3664 * completely replace the existing received properties, so stash
3665 * away the existing ones.
b128c09f 3666 */
428870ff
BB		 3667 if (dsl_prop_get_received(os, &origprops) == 0) {
3668 nvlist_t *errlist = NULL;
3669 /*
3670 * Don't bother writing a property if its value won't
3671 * change (and avoid the unnecessary security checks).
3672 *
3673 * The first receive after SPA_VERSION_RECVD_PROPS is a
3674 * special case where we blow away all local properties
3675 * regardless.
3676 */
3677 if (!first_recvd_props)
3678 props_reduce(props, origprops);
3679 if (zfs_check_clearable(tofs, origprops,
3680 &errlist) != 0)
3681 (void) nvlist_merge(errors, errlist, 0);
3682 nvlist_free(errlist);
3683 }
b128c09f 3684
428870ff 3685 dmu_objset_rele(os, FTAG);
34dc7c2f
BB		 3686 }
3687
3688 if (zc->zc_string[0]) {
428870ff 3689 error = dmu_objset_hold(zc->zc_string, FTAG, &origin);
b128c09f
BB		 3690 if (error)
3691 goto out;
34dc7c2f
BB		 3692 }
3693
428870ff
BB		 3694 error = dmu_recv_begin(tofs, tosnap, zc->zc_top_ds,
3695 &zc->zc_begin_record, force, origin, &drc);
34dc7c2f 3696 if (origin)
428870ff 3697 dmu_objset_rele(origin, FTAG);
b128c09f
BB		 3698 if (error)
3699 goto out;
34dc7c2f
BB		 3700
3701 /*
428870ff
BB		 3702 * Set properties before we receive the stream so that they are applied
3703 * to the new data. Note that we must call dmu_recv_stream() if
3704 * dmu_recv_begin() succeeds.
34dc7c2f
BB		 3705 */
3706 if (props) {
428870ff
BB		 3707 nvlist_t *errlist;
3708
3709 if (dmu_objset_from_ds(drc.drc_logical_ds, &os) == 0) {
3710 if (drc.drc_newfs) {
3711 if (spa_version(os->os_spa) >=
3712 SPA_VERSION_RECVD_PROPS)
3713 first_recvd_props = B_TRUE;
3714 } else if (origprops != NULL) {
3715 if (clear_received_props(os, tofs, origprops,
3716 first_recvd_props ? NULL : props) != 0)
3717 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3718 } else {
3719 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3720 }
3721 dsl_prop_set_hasrecvd(os);
3722 } else if (!drc.drc_newfs) {
3723 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3724 }
3725
3726 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
3727 props, &errlist);
3728 (void) nvlist_merge(errors, errlist, 0);
3729 nvlist_free(errlist);
3730 }
3731
3732 if (fit_error_list(zc, &errors) != 0 || put_nvlist(zc, errors) != 0) {
b128c09f 3733 /*
428870ff
BB		 3734 * Caller made zc->zc_nvlist_dst less than the minimum expected
3735 * size or supplied an invalid address.
b128c09f 3736 */
428870ff 3737 props_error = EINVAL;
34dc7c2f
BB		 3738 }
3739
34dc7c2f 3740 off = fp->f_offset;
572e2857
BB		 3741 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd,
3742 &zc->zc_action_handle);
34dc7c2f 3743
45d1cae3 3744 if (error == 0) {
3558fd73 3745 zfs_sb_t *zsb = NULL;
b128c09f 3746
3558fd73 3747 if (get_zfs_sb(tofs, &zsb) == 0) {
45d1cae3
BB		 3748 /* online recv */
3749 int end_err;
b128c09f 3750
3558fd73 3751 error = zfs_suspend_fs(zsb);
45d1cae3
BB		 3752 /*
3753 * If the suspend fails, then the recv_end will
3754 * likely also fail, and clean up after itself.
3755 */
3756 end_err = dmu_recv_end(&drc);
428870ff 3757 if (error == 0)
3558fd73 3758 error = zfs_resume_fs(zsb, tofs);
45d1cae3 3759 error = error ? error : end_err;
2cf7f52b 3760 deactivate_super(zsb->z_sb);
b128c09f 3761 } else {
45d1cae3 3762 error = dmu_recv_end(&drc);
34dc7c2f 3763 }
34dc7c2f
BB		 3764 }
3765
3766 zc->zc_cookie = off - fp->f_offset;
3767 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
3768 fp->f_offset = off;
3769
428870ff
BB		 3770#ifdef DEBUG
3771 if (zfs_ioc_recv_inject_err) {
3772 zfs_ioc_recv_inject_err = B_FALSE;
3773 error = 1;
3774 }
3775#endif
b128c09f
BB		 3776 /*
3777 * On error, restore the original props.
3778 */
3779 if (error && props) {
428870ff
BB		 3780 if (dmu_objset_hold(tofs, FTAG, &os) == 0) {
3781 if (clear_received_props(os, tofs, props, NULL) != 0) {
3782 /*
3783 * We failed to clear the received properties.
3784 * Since we may have left a $recvd value on the
3785 * system, we can't clear the $hasrecvd flag.
3786 */
3787 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3788 } else if (first_recvd_props) {
3789 dsl_prop_unset_hasrecvd(os);
3790 }
3791 dmu_objset_rele(os, FTAG);
3792 } else if (!drc.drc_newfs) {
3793 /* We failed to clear the received properties. */
3794 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3795 }
3796
3797 if (origprops == NULL && !drc.drc_newfs) {
3798 /* We failed to stash the original properties. */
3799 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3800 }
3801
3802 /*
3803 * dsl_props_set() will not convert RECEIVED to LOCAL on or
3804 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL
3805 * explictly if we're restoring local properties cleared in the
3806 * first new-style receive.
3807 */
3808 if (origprops != NULL &&
3809 zfs_set_prop_nvlist(tofs, (first_recvd_props ?
3810 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED),
3811 origprops, NULL) != 0) {
3812 /*
3813 * We stashed the original properties but failed to
3814 * restore them.
3815 */
3816 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3817 }
b128c09f
BB		 3818 }
3819out:
b128c09f
BB		 3820 nvlist_free(props);
3821 nvlist_free(origprops);
428870ff 3822 nvlist_free(errors);
34dc7c2f 3823 releasef(fd);
428870ff
BB		 3824
3825 if (error == 0)
3826 error = props_error;
3827
34dc7c2f
BB		 3828 return (error);
3829}
3830
3831/*
3832 * inputs:
3833 * zc_name name of snapshot to send
34dc7c2f 3834 * zc_cookie file descriptor to send stream to
572e2857
BB		 3835 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj)
3836 * zc_sendobj objsetid of snapshot to send
3837 * zc_fromobj objsetid of incremental fromsnap (may be zero)
330d06f9
MA		 3838 * zc_guid if set, estimate size of stream only. zc_cookie is ignored.
3839 * output size in zc_objset_type.
34dc7c2f
BB		 3840 *
3841 * outputs: none
3842 */
3843static int
3844zfs_ioc_send(zfs_cmd_t *zc)
3845{
3846 objset_t *fromsnap = NULL;
3847 objset_t *tosnap;
34dc7c2f
BB		 3848 int error;
3849 offset_t off;
572e2857
BB		 3850 dsl_dataset_t *ds;
3851 dsl_dataset_t *dsfrom = NULL;
3852 spa_t *spa;
3853 dsl_pool_t *dp;
330d06f9 3854 boolean_t estimate = (zc->zc_guid != 0);
34dc7c2f 3855
572e2857 3856 error = spa_open(zc->zc_name, &spa, FTAG);
34dc7c2f
BB		 3857 if (error)
3858 return (error);
3859
572e2857
BB		 3860 dp = spa_get_dsl(spa);
3861 rw_enter(&dp->dp_config_rwlock, RW_READER);
3862 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
3863 rw_exit(&dp->dp_config_rwlock);
3864 if (error) {
3865 spa_close(spa, FTAG);
3866 return (error);
3867 }
3868
3869 error = dmu_objset_from_ds(ds, &tosnap);
3870 if (error) {
3871 dsl_dataset_rele(ds, FTAG);
3872 spa_close(spa, FTAG);
3873 return (error);
3874 }
3875
3876 if (zc->zc_fromobj != 0) {
3877 rw_enter(&dp->dp_config_rwlock, RW_READER);
3878 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, FTAG, &dsfrom);
3879 rw_exit(&dp->dp_config_rwlock);
3880 spa_close(spa, FTAG);
3881 if (error) {
3882 dsl_dataset_rele(ds, FTAG);
3883 return (error);
3884 }
3885 error = dmu_objset_from_ds(dsfrom, &fromsnap);
34dc7c2f 3886 if (error) {
572e2857
BB		 3887 dsl_dataset_rele(dsfrom, FTAG);
3888 dsl_dataset_rele(ds, FTAG);
34dc7c2f
BB		 3889 return (error);
3890 }
572e2857
BB		 3891 } else {
3892 spa_close(spa, FTAG);
34dc7c2f
BB		 3893 }
3894
330d06f9
MA		 3895 if (estimate) {
3896 error = dmu_send_estimate(tosnap, fromsnap, zc->zc_obj,
3897 &zc->zc_objset_type);
3898 } else {
3899 file_t *fp = getf(zc->zc_cookie);
3900 if (fp == NULL) {
3901 dsl_dataset_rele(ds, FTAG);
3902 if (dsfrom)
3903 dsl_dataset_rele(dsfrom, FTAG);
3904 return (EBADF);
3905 }
34dc7c2f 3906
330d06f9 3907 off = fp->f_offset;
37abac6d
BP		 3908 error = dmu_send(tosnap, fromsnap, zc->zc_obj,
3909 zc->zc_cookie, fp->f_vnode, &off);
34dc7c2f 3910
330d06f9
MA		 3911 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
3912 fp->f_offset = off;
3913 releasef(zc->zc_cookie);
3914 }
572e2857
BB		 3915 if (dsfrom)
3916 dsl_dataset_rele(dsfrom, FTAG);
3917 dsl_dataset_rele(ds, FTAG);
34dc7c2f
BB		 3918 return (error);
3919}
3920
37abac6d
BP		 3921/*
3922 * inputs:
3923 * zc_name name of snapshot on which to report progress
3924 * zc_cookie file descriptor of send stream
3925 *
3926 * outputs:
3927 * zc_cookie number of bytes written in send stream thus far
3928 */
3929static int
3930zfs_ioc_send_progress(zfs_cmd_t *zc)
3931{
3932 dsl_dataset_t *ds;
3933 dmu_sendarg_t *dsp = NULL;
3934 int error;
3935
3936 if ((error = dsl_dataset_hold(zc->zc_name, FTAG, &ds)) != 0)
3937 return (error);
3938
3939 mutex_enter(&ds->ds_sendstream_lock);
3940
3941 /*
3942 * Iterate over all the send streams currently active on this dataset.
3943 * If there's one which matches the specified file descriptor _and_ the
3944 * stream was started by the current process, return the progress of
3945 * that stream.
3946 */
3947
3948 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL;
3949 dsp = list_next(&ds->ds_sendstreams, dsp)) {
3950 if (dsp->dsa_outfd == zc->zc_cookie &&
3951 dsp->dsa_proc->group_leader == curproc->group_leader)
3952 break;
3953 }
3954
3955 if (dsp != NULL)
3956 zc->zc_cookie = *(dsp->dsa_off);
3957 else
3958 error = ENOENT;
3959
3960 mutex_exit(&ds->ds_sendstream_lock);
3961 dsl_dataset_rele(ds, FTAG);
3962 return (error);
3963}
3964
34dc7c2f
BB		 3965static int
3966zfs_ioc_inject_fault(zfs_cmd_t *zc)
3967{
3968 int id, error;
3969
3970 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id,
3971 &zc->zc_inject_record);
3972
3973 if (error == 0)
3974 zc->zc_guid = (uint64_t)id;
3975
3976 return (error);
3977}
3978
3979static int
3980zfs_ioc_clear_fault(zfs_cmd_t *zc)
3981{
3982 return (zio_clear_fault((int)zc->zc_guid));
3983}
3984
3985static int
3986zfs_ioc_inject_list_next(zfs_cmd_t *zc)
3987{
3988 int id = (int)zc->zc_guid;
3989 int error;
3990
3991 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name),
3992 &zc->zc_inject_record);
3993
3994 zc->zc_guid = id;
3995
3996 return (error);
3997}
3998
3999static int
4000zfs_ioc_error_log(zfs_cmd_t *zc)
4001{
4002 spa_t *spa;
4003 int error;
4004 size_t count = (size_t)zc->zc_nvlist_dst_size;
4005
4006 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
4007 return (error);
4008
4009 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst,
4010 &count);
4011 if (error == 0)
4012 zc->zc_nvlist_dst_size = count;
4013 else
4014 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa);
4015
4016 spa_close(spa, FTAG);
4017
4018 return (error);
4019}
4020
4021static int
4022zfs_ioc_clear(zfs_cmd_t *zc)
4023{
4024 spa_t *spa;
4025 vdev_t *vd;
34dc7c2f
BB		 4026 int error;
4027
34dc7c2f 4028 /*
b128c09f 4029 * On zpool clear we also fix up missing slogs
34dc7c2f 4030 */
b128c09f
BB		 4031 mutex_enter(&spa_namespace_lock);
4032 spa = spa_lookup(zc->zc_name);
4033 if (spa == NULL) {
4034 mutex_exit(&spa_namespace_lock);
4035 return (EIO);
4036 }
428870ff 4037 if (spa_get_log_state(spa) == SPA_LOG_MISSING) {
b128c09f 4038 /* we need to let spa_open/spa_load clear the chains */
428870ff 4039 spa_set_log_state(spa, SPA_LOG_CLEAR);
34dc7c2f 4040 }
428870ff 4041 spa->spa_last_open_failed = 0;
b128c09f 4042 mutex_exit(&spa_namespace_lock);
34dc7c2f 4043
428870ff
BB		 4044 if (zc->zc_cookie & ZPOOL_NO_REWIND) {
4045 error = spa_open(zc->zc_name, &spa, FTAG);
4046 } else {
4047 nvlist_t *policy;
4048 nvlist_t *config = NULL;
4049
b8864a23 4050 if (zc->zc_nvlist_src == 0)
428870ff
BB		 4051 return (EINVAL);
4052
4053 if ((error = get_nvlist(zc->zc_nvlist_src,
4054 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) {
4055 error = spa_open_rewind(zc->zc_name, &spa, FTAG,
4056 policy, &config);
4057 if (config != NULL) {
572e2857
BB		 4058 int err;
4059
4060 if ((err = put_nvlist(zc, config)) != 0)
4061 error = err;
428870ff
BB		 4062 nvlist_free(config);
4063 }
4064 nvlist_free(policy);
4065 }
4066 }
4067
4068 if (error)
b128c09f
BB		 4069 return (error);
4070
428870ff 4071 spa_vdev_state_enter(spa, SCL_NONE);
34dc7c2f
BB		 4072
4073 if (zc->zc_guid == 0) {
4074 vd = NULL;
b128c09f
BB		 4075 } else {
4076 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE);
34dc7c2f 4077 if (vd == NULL) {
b128c09f 4078 (void) spa_vdev_state_exit(spa, NULL, ENODEV);
34dc7c2f
BB		 4079 spa_close(spa, FTAG);
4080 return (ENODEV);
4081 }
4082 }
4083
b128c09f
BB		 4084 vdev_clear(spa, vd);
4085
4086 (void) spa_vdev_state_exit(spa, NULL, 0);
34dc7c2f 4087
b128c09f
BB		 4088 /*
4089 * Resume any suspended I/Os.
4090 */
9babb374
BB		 4091 if (zio_resume(spa) != 0)
4092 error = EIO;
34dc7c2f
BB		 4093
4094 spa_close(spa, FTAG);
4095
9babb374 4096 return (error);
34dc7c2f
BB		 4097}
4098
1bd201e7
CS		 4099static int
4100zfs_ioc_pool_reopen(zfs_cmd_t *zc)
4101{
4102 spa_t *spa;
4103 int error;
4104
4105 error = spa_open(zc->zc_name, &spa, FTAG);
4106 if (error)
4107 return (error);
4108
4109 spa_vdev_state_enter(spa, SCL_NONE);
65947351
GW		 4110
4111 /*
4112 * If a resilver is already in progress then set the
4113 * spa_scrub_reopen flag to B_TRUE so that we don't restart
4114 * the scan as a side effect of the reopen. Otherwise, let
4115 * vdev_open() decided if a resilver is required.
4116 */
4117 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool);
1bd201e7 4118 vdev_reopen(spa->spa_root_vdev);
65947351
GW		 4119 spa->spa_scrub_reopen = B_FALSE;
4120
1bd201e7
CS		 4121 (void) spa_vdev_state_exit(spa, NULL, 0);
4122 spa_close(spa, FTAG);
4123 return (0);
4124}
34dc7c2f
BB		 4125/*
4126 * inputs:
4127 * zc_name name of filesystem
4128 * zc_value name of origin snapshot
4129 *
428870ff
BB		 4130 * outputs:
4131 * zc_string name of conflicting snapshot, if there is one
34dc7c2f
BB		 4132 */
4133static int
4134zfs_ioc_promote(zfs_cmd_t *zc)
4135{
4136 char *cp;
4137
4138 /*
4139 * We don't need to unmount *all* the origin fs's snapshots, but
4140 * it's easier.
4141 */
4142 cp = strchr(zc->zc_value, '@');
4143 if (cp)
4144 *cp = '\0';
4145 (void) dmu_objset_find(zc->zc_value,
4146 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS);
428870ff 4147 return (dsl_dataset_promote(zc->zc_name, zc->zc_string));
34dc7c2f
BB		 4148}
4149
9babb374
BB		 4150/*
4151 * Retrieve a single {user|group}{used|quota}@... property.
4152 *
4153 * inputs:
4154 * zc_name name of filesystem
4155 * zc_objset_type zfs_userquota_prop_t
4156 * zc_value domain name (eg. "S-1-234-567-89")
4157 * zc_guid RID/UID/GID
4158 *
4159 * outputs:
4160 * zc_cookie property value
4161 */
4162static int
4163zfs_ioc_userspace_one(zfs_cmd_t *zc)
4164{
3558fd73 4165 zfs_sb_t *zsb;
9babb374
BB		 4166 int error;
4167
4168 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
4169 return (EINVAL);
4170
3558fd73 4171 error = zfs_sb_hold(zc->zc_name, FTAG, &zsb, B_FALSE);
9babb374
BB		 4172 if (error)
4173 return (error);
4174
3558fd73 4175 error = zfs_userspace_one(zsb,
9babb374 4176 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie);
3558fd73 4177 zfs_sb_rele(zsb, FTAG);
9babb374
BB		 4178
4179 return (error);
4180}
4181
4182/*
4183 * inputs:
4184 * zc_name name of filesystem
4185 * zc_cookie zap cursor
4186 * zc_objset_type zfs_userquota_prop_t
4187 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist)
4188 *
4189 * outputs:
4190 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t)
4191 * zc_cookie zap cursor
4192 */
4193static int
4194zfs_ioc_userspace_many(zfs_cmd_t *zc)
4195{
3558fd73 4196 zfs_sb_t *zsb;
428870ff 4197 int bufsize = zc->zc_nvlist_dst_size;
3558fd73
BB		 4198 int error;
4199 void *buf;
428870ff
BB		 4200
4201 if (bufsize <= 0)
4202 return (ENOMEM);
9babb374 4203
3558fd73 4204 error = zfs_sb_hold(zc->zc_name, FTAG, &zsb, B_FALSE);
9babb374
BB		 4205 if (error)
4206 return (error);
4207
2b8cad61 4208 buf = vmem_alloc(bufsize, KM_SLEEP);
9babb374 4209
3558fd73 4210 error = zfs_userspace_many(zsb, zc->zc_objset_type, &zc->zc_cookie,
9babb374
BB		 4211 buf, &zc->zc_nvlist_dst_size);
4212
4213 if (error == 0) {
4214 error = xcopyout(buf,
4215 (void *)(uintptr_t)zc->zc_nvlist_dst,
4216 zc->zc_nvlist_dst_size);
4217 }
2b8cad61 4218 vmem_free(buf, bufsize);
3558fd73 4219 zfs_sb_rele(zsb, FTAG);
9babb374
BB		 4220
4221 return (error);
4222}
4223
4224/*
4225 * inputs:
4226 * zc_name name of filesystem
4227 *
4228 * outputs:
4229 * none
4230 */
4231static int
4232zfs_ioc_userspace_upgrade(zfs_cmd_t *zc)
4233{
4234 objset_t *os;
428870ff 4235 int error = 0;
3558fd73 4236 zfs_sb_t *zsb;
9babb374 4237
3558fd73
BB		 4238 if (get_zfs_sb(zc->zc_name, &zsb) == 0) {
4239 if (!dmu_objset_userused_enabled(zsb->z_os)) {
9babb374
BB		 4240 /*
4241 * If userused is not enabled, it may be because the
4242 * objset needs to be closed & reopened (to grow the
4243 * objset_phys_t). Suspend/resume the fs will do that.
4244 */
3558fd73 4245 error = zfs_suspend_fs(zsb);
428870ff 4246 if (error == 0)
3558fd73 4247 error = zfs_resume_fs(zsb, zc->zc_name);
9babb374
BB		 4248 }
4249 if (error == 0)
3558fd73 4250 error = dmu_objset_userspace_upgrade(zsb->z_os);
2cf7f52b 4251 deactivate_super(zsb->z_sb);
9babb374 4252 } else {
428870ff
BB		 4253 /* XXX kind of reading contents without owning */
4254 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
9babb374
BB		 4255 if (error)
4256 return (error);
4257
4258 error = dmu_objset_userspace_upgrade(os);
428870ff 4259 dmu_objset_rele(os, FTAG);
9babb374
BB		 4260 }
4261
4262 return (error);
4263}
4264
34dc7c2f
BB		 4265static int
4266zfs_ioc_share(zfs_cmd_t *zc)
4267{
46e18b3f 4268 return (ENOSYS);
34dc7c2f
BB		 4269}
4270
9babb374
BB		 4271ace_t full_access[] = {
4272 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0}
4273};
4274
572e2857
BB		 4275/*
4276 * inputs:
4277 * zc_name name of containing filesystem
4278 * zc_obj object # beyond which we want next in-use object #
4279 *
4280 * outputs:
4281 * zc_obj next in-use object #
4282 */
4283static int
4284zfs_ioc_next_obj(zfs_cmd_t *zc)
4285{
4286 objset_t *os = NULL;
4287 int error;
4288
4289 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4290 if (error)
4291 return (error);
4292
4293 error = dmu_object_next(os, &zc->zc_obj, B_FALSE,
4294 os->os_dsl_dataset->ds_phys->ds_prev_snap_txg);
4295
4296 dmu_objset_rele(os, FTAG);
4297 return (error);
4298}
4299
4300/*
4301 * inputs:
4302 * zc_name name of filesystem
4303 * zc_value prefix name for snapshot
4304 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
4305 *
4306 * outputs:
4307 */
4308static int
4309zfs_ioc_tmp_snapshot(zfs_cmd_t *zc)
4310{
4311 char *snap_name;
4312 int error;
4313
4314 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value,
4315 (u_longlong_t)ddi_get_lbolt64());
4316
4317 if (strlen(snap_name) >= MAXNAMELEN) {
4318 strfree(snap_name);
4319 return (E2BIG);
4320 }
4321
4322 error = dmu_objset_snapshot(zc->zc_name, snap_name, snap_name,
4323 NULL, B_FALSE, B_TRUE, zc->zc_cleanup_fd);
4324 if (error != 0) {
4325 strfree(snap_name);
4326 return (error);
4327 }
4328
4329 (void) strcpy(zc->zc_value, snap_name);
4330 strfree(snap_name);
4331 return (0);
4332}
4333
4334/*
4335 * inputs:
4336 * zc_name name of "to" snapshot
4337 * zc_value name of "from" snapshot
4338 * zc_cookie file descriptor to write diff data on
4339 *
4340 * outputs:
4341 * dmu_diff_record_t's to the file descriptor
4342 */
4343static int
4344zfs_ioc_diff(zfs_cmd_t *zc)
4345{
4346 objset_t *fromsnap;
4347 objset_t *tosnap;
4348 file_t *fp;
4349 offset_t off;
4350 int error;
4351
4352 error = dmu_objset_hold(zc->zc_name, FTAG, &tosnap);
4353 if (error)
4354 return (error);
4355
4356 error = dmu_objset_hold(zc->zc_value, FTAG, &fromsnap);
4357 if (error) {
4358 dmu_objset_rele(tosnap, FTAG);
4359 return (error);
4360 }
4361
4362 fp = getf(zc->zc_cookie);
4363 if (fp == NULL) {
4364 dmu_objset_rele(fromsnap, FTAG);
4365 dmu_objset_rele(tosnap, FTAG);
4366 return (EBADF);
4367 }
4368
4369 off = fp->f_offset;
4370
4371 error = dmu_diff(tosnap, fromsnap, fp->f_vnode, &off);
4372
4373 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4374 fp->f_offset = off;
4375 releasef(zc->zc_cookie);
4376
4377 dmu_objset_rele(fromsnap, FTAG);
4378 dmu_objset_rele(tosnap, FTAG);
4379 return (error);
4380}
4381
9babb374
BB		 4382/*
4383 * Remove all ACL files in shares dir
4384 */
3c9609b3 4385#ifdef HAVE_SMB_SHARE
9babb374
BB		 4386static int
4387zfs_smb_acl_purge(znode_t *dzp)
4388{
4389 zap_cursor_t zc;
4390 zap_attribute_t zap;
3558fd73 4391 zfs_sb_t *zsb = ZTOZSB(dzp);
9babb374
BB		 4392 int error;
4393
3558fd73 4394 for (zap_cursor_init(&zc, zsb->z_os, dzp->z_id);
9babb374
BB		 4395 (error = zap_cursor_retrieve(&zc, &zap)) == 0;
4396 zap_cursor_advance(&zc)) {
4397 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred,
4398 NULL, 0)) != 0)
4399 break;
4400 }
4401 zap_cursor_fini(&zc);
4402 return (error);
4403}
3c9609b3 4404#endif /* HAVE_SMB_SHARE */
9babb374
BB		 4405
4406static int
4407zfs_ioc_smb_acl(zfs_cmd_t *zc)
4408{
3c9609b3 4409#ifdef HAVE_SMB_SHARE
9babb374
BB		 4410 vnode_t *vp;
4411 znode_t *dzp;
4412 vnode_t *resourcevp = NULL;
4413 znode_t *sharedir;
3558fd73 4414 zfs_sb_t *zsb;
9babb374
BB		 4415 nvlist_t *nvlist;
4416 char *src, *target;
4417 vattr_t vattr;
4418 vsecattr_t vsec;
4419 int error = 0;
4420
4421 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
4422 NO_FOLLOW, NULL, &vp)) != 0)
4423 return (error);
4424
4425 /* Now make sure mntpnt and dataset are ZFS */
4426
4427 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
4428 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
4429 zc->zc_name) != 0)) {
4430 VN_RELE(vp);
4431 return (EINVAL);
4432 }
4433
4434 dzp = VTOZ(vp);
3558fd73
BB		 4435 zsb = ZTOZSB(dzp);
4436 ZFS_ENTER(zsb);
9babb374
BB		 4437
4438 /*
4439 * Create share dir if its missing.
4440 */
3558fd73
BB		 4441 mutex_enter(&zsb->z_lock);
4442 if (zsb->z_shares_dir == 0) {
9babb374
BB		 4443 dmu_tx_t *tx;
4444
3558fd73 4445 tx = dmu_tx_create(zsb->z_os);
9babb374
BB		 4446 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE,
4447 ZFS_SHARES_DIR);
4448 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
4449 error = dmu_tx_assign(tx, TXG_WAIT);
4450 if (error) {
4451 dmu_tx_abort(tx);
4452 } else {
3558fd73 4453 error = zfs_create_share_dir(zsb, tx);
9babb374
BB		 4454 dmu_tx_commit(tx);
4455 }
4456 if (error) {
3558fd73 4457 mutex_exit(&zsb->z_lock);
9babb374 4458 VN_RELE(vp);
3558fd73 4459 ZFS_EXIT(zsb);
9babb374
BB		 4460 return (error);
4461 }
4462 }
3558fd73 4463 mutex_exit(&zsb->z_lock);
9babb374 4464
3558fd73
BB		 4465 ASSERT(zsb->z_shares_dir);
4466 if ((error = zfs_zget(zsb, zsb->z_shares_dir, &sharedir)) != 0) {
9babb374 4467 VN_RELE(vp);
3558fd73 4468 ZFS_EXIT(zsb);
9babb374
BB		 4469 return (error);
4470 }
4471
4472 switch (zc->zc_cookie) {
4473 case ZFS_SMB_ACL_ADD:
4474 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE;
9babb374
BB		 4475 vattr.va_mode = S_IFREG|0777;
4476 vattr.va_uid = 0;
4477 vattr.va_gid = 0;
4478
4479 vsec.vsa_mask = VSA_ACE;
4480 vsec.vsa_aclentp = &full_access;
4481 vsec.vsa_aclentsz = sizeof (full_access);
4482 vsec.vsa_aclcnt = 1;
4483
4484 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string,
4485 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec);
4486 if (resourcevp)
4487 VN_RELE(resourcevp);
4488 break;
4489
4490 case ZFS_SMB_ACL_REMOVE:
4491 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred,
4492 NULL, 0);
4493 break;
4494
4495 case ZFS_SMB_ACL_RENAME:
4496 if ((error = get_nvlist(zc->zc_nvlist_src,
4497 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) {
4498 VN_RELE(vp);
3558fd73 4499 ZFS_EXIT(zsb);
9babb374
BB		 4500 return (error);
4501 }
4502 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) ||
4503 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET,
4504 &target)) {
4505 VN_RELE(vp);
4506 VN_RELE(ZTOV(sharedir));
3558fd73 4507 ZFS_EXIT(zsb);
428870ff 4508 nvlist_free(nvlist);
9babb374
BB		 4509 return (error);
4510 }
4511 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target,
4512 kcred, NULL, 0);
4513 nvlist_free(nvlist);
4514 break;
4515
4516 case ZFS_SMB_ACL_PURGE:
4517 error = zfs_smb_acl_purge(sharedir);
4518 break;
4519
4520 default:
4521 error = EINVAL;
4522 break;
4523 }
4524
4525 VN_RELE(vp);
4526 VN_RELE(ZTOV(sharedir));
4527
3558fd73 4528 ZFS_EXIT(zsb);
9babb374
BB		 4529
4530 return (error);
325f0235
BB		 4531#else
4532 return (ENOTSUP);
3c9609b3 4533#endif /* HAVE_SMB_SHARE */
9babb374
BB		 4534}
4535
45d1cae3
BB		 4536/*
4537 * inputs:
572e2857
BB		 4538 * zc_name name of filesystem
4539 * zc_value short name of snap
4540 * zc_string user-supplied tag for this hold
4541 * zc_cookie recursive flag
4542 * zc_temphold set if hold is temporary
4543 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
4544 * zc_sendobj if non-zero, the objid for zc_name@zc_value
4545 * zc_createtxg if zc_sendobj is non-zero, snap must have zc_createtxg
45d1cae3
BB		 4546 *
4547 * outputs: none
4548 */
4549static int
4550zfs_ioc_hold(zfs_cmd_t *zc)
4551{
4552 boolean_t recursive = zc->zc_cookie;
572e2857
BB		 4553 spa_t *spa;
4554 dsl_pool_t *dp;
4555 dsl_dataset_t *ds;
4556 int error;
4557 minor_t minor = 0;
45d1cae3
BB		 4558
4559 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
4560 return (EINVAL);
4561
572e2857
BB		 4562 if (zc->zc_sendobj == 0) {
4563 return (dsl_dataset_user_hold(zc->zc_name, zc->zc_value,
4564 zc->zc_string, recursive, zc->zc_temphold,
4565 zc->zc_cleanup_fd));
4566 }
4567
4568 if (recursive)
4569 return (EINVAL);
4570
4571 error = spa_open(zc->zc_name, &spa, FTAG);
4572 if (error)
4573 return (error);
4574
4575 dp = spa_get_dsl(spa);
4576 rw_enter(&dp->dp_config_rwlock, RW_READER);
4577 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
4578 rw_exit(&dp->dp_config_rwlock);
4579 spa_close(spa, FTAG);
4580 if (error)
4581 return (error);
4582
4583 /*
4584 * Until we have a hold on this snapshot, it's possible that
4585 * zc_sendobj could've been destroyed and reused as part
4586 * of a later txg. Make sure we're looking at the right object.
4587 */
4588 if (zc->zc_createtxg != ds->ds_phys->ds_creation_txg) {
4589 dsl_dataset_rele(ds, FTAG);
4590 return (ENOENT);
4591 }
4592
4593 if (zc->zc_cleanup_fd != -1 && zc->zc_temphold) {
4594 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor);
4595 if (error) {
4596 dsl_dataset_rele(ds, FTAG);
4597 return (error);
4598 }
4599 }
4600
4601 error = dsl_dataset_user_hold_for_send(ds, zc->zc_string,
4602 zc->zc_temphold);
4603 if (minor != 0) {
4604 if (error == 0) {
4605 dsl_register_onexit_hold_cleanup(ds, zc->zc_string,
4606 minor);
4607 }
4608 zfs_onexit_fd_rele(zc->zc_cleanup_fd);
4609 }
4610 dsl_dataset_rele(ds, FTAG);
4611
4612 return (error);
45d1cae3
BB		 4613}
4614
4615/*
4616 * inputs:
572e2857 4617 * zc_name name of dataset from which we're releasing a user hold
45d1cae3 4618 * zc_value short name of snap
572e2857 4619 * zc_string user-supplied tag for this hold
45d1cae3
BB		 4620 * zc_cookie recursive flag
4621 *
572e2857 4622 * outputs: none
45d1cae3
BB		 4623 */
4624static int
4625zfs_ioc_release(zfs_cmd_t *zc)
4626{
4627 boolean_t recursive = zc->zc_cookie;
4628
4629 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
4630 return (EINVAL);
4631
4632 return (dsl_dataset_user_release(zc->zc_name, zc->zc_value,
4633 zc->zc_string, recursive));
4634}
4635
4636/*
4637 * inputs:
4638 * zc_name name of filesystem
4639 *
4640 * outputs:
4641 * zc_nvlist_src{_size} nvlist of snapshot holds
4642 */
4643static int
4644zfs_ioc_get_holds(zfs_cmd_t *zc)
4645{
4646 nvlist_t *nvp;
4647 int error;
4648
4649 if ((error = dsl_dataset_get_holds(zc->zc_name, &nvp)) == 0) {
4650 error = put_nvlist(zc, nvp);
4651 nvlist_free(nvp);
4652 }
4653
4654 return (error);
4655}
4656
26685276
BB		 4657/*
4658 * inputs:
4659 * zc_guid flags (ZEVENT_NONBLOCK)
4660 *
4661 * outputs:
4662 * zc_nvlist_dst next nvlist event
4663 * zc_cookie dropped events since last get
4664 * zc_cleanup_fd cleanup-on-exit file descriptor
4665 */
4666static int
4667zfs_ioc_events_next(zfs_cmd_t *zc)
4668{
4669 zfs_zevent_t *ze;
4670 nvlist_t *event = NULL;
4671 minor_t minor;
4672 uint64_t dropped = 0;
4673 int error;
4674
4675 error = zfs_zevent_fd_hold(zc->zc_cleanup_fd, &minor, &ze);
4676 if (error != 0)
4677 return (error);
4678
4679 do {
baa40d45
BB		 4680 error = zfs_zevent_next(ze, &event,
4681 &zc->zc_nvlist_dst_size, &dropped);
26685276
BB		 4682 if (event != NULL) {
4683 zc->zc_cookie = dropped;
4684 error = put_nvlist(zc, event);
baa40d45 4685 nvlist_free(event);
26685276
BB		 4686 }
4687
4688 if (zc->zc_guid & ZEVENT_NONBLOCK)
4689 break;
4690
4691 if ((error == 0) || (error != ENOENT))
4692 break;
4693
4694 error = zfs_zevent_wait(ze);
4695 if (error)
4696 break;
4697 } while (1);
4698
4699 zfs_zevent_fd_rele(zc->zc_cleanup_fd);
4700
4701 return (error);
4702}
4703
4704/*
4705 * outputs:
4706 * zc_cookie cleared events count
4707 */
4708static int
4709zfs_ioc_events_clear(zfs_cmd_t *zc)
4710{
4711 int count;
4712
4713 zfs_zevent_drain_all(&count);
4714 zc->zc_cookie = count;
4715
4716 return 0;
4717}
4718
330d06f9
MA		 4719/*
4720 * inputs:
4721 * zc_name name of new filesystem or snapshot
4722 * zc_value full name of old snapshot
4723 *
4724 * outputs:
4725 * zc_cookie space in bytes
4726 * zc_objset_type compressed space in bytes
4727 * zc_perm_action uncompressed space in bytes
4728 */
4729static int
4730zfs_ioc_space_written(zfs_cmd_t *zc)
4731{
4732 int error;
4733 dsl_dataset_t *new, *old;
4734
4735 error = dsl_dataset_hold(zc->zc_name, FTAG, &new);
4736 if (error != 0)
4737 return (error);
4738 error = dsl_dataset_hold(zc->zc_value, FTAG, &old);
4739 if (error != 0) {
4740 dsl_dataset_rele(new, FTAG);
4741 return (error);
4742 }
4743
4744 error = dsl_dataset_space_written(old, new, &zc->zc_cookie,
4745 &zc->zc_objset_type, &zc->zc_perm_action);
4746 dsl_dataset_rele(old, FTAG);
4747 dsl_dataset_rele(new, FTAG);
4748 return (error);
4749}
4750
4751/*
4752 * inputs:
4753 * zc_name full name of last snapshot
4754 * zc_value full name of first snapshot
4755 *
4756 * outputs:
4757 * zc_cookie space in bytes
4758 * zc_objset_type compressed space in bytes
4759 * zc_perm_action uncompressed space in bytes
4760 */
4761static int
4762zfs_ioc_space_snaps(zfs_cmd_t *zc)
4763{
4764 int error;
4765 dsl_dataset_t *new, *old;
4766
4767 error = dsl_dataset_hold(zc->zc_name, FTAG, &new);
4768 if (error != 0)
4769 return (error);
4770 error = dsl_dataset_hold(zc->zc_value, FTAG, &old);
4771 if (error != 0) {
4772 dsl_dataset_rele(new, FTAG);
4773 return (error);
4774 }
4775
4776 error = dsl_dataset_space_wouldfree(old, new, &zc->zc_cookie,
4777 &zc->zc_objset_type, &zc->zc_perm_action);
4778 dsl_dataset_rele(old, FTAG);
4779 dsl_dataset_rele(new, FTAG);
4780 return (error);
4781}
4782
34dc7c2f
BB		 4783/*
4784 * pool create, destroy, and export don't log the history as part of
4785 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export
4786 * do the logging of those commands.
4787 */
4788static zfs_ioc_vec_t zfs_ioc_vec[] = {
9babb374 4789 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE,
572e2857 4790 POOL_CHECK_NONE },
9babb374 4791 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE,
572e2857 4792 POOL_CHECK_NONE },
9babb374 4793 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE,
572e2857 4794 POOL_CHECK_NONE },
9babb374 4795 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE,
572e2857 4796 POOL_CHECK_NONE },
9babb374 4797 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE,
572e2857 4798 POOL_CHECK_NONE },
9babb374 4799 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE,
572e2857 4800 POOL_CHECK_NONE },
9babb374 4801 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE,
572e2857 4802 POOL_CHECK_NONE },
428870ff 4803 { zfs_ioc_pool_scan, zfs_secpolicy_config, POOL_NAME, B_TRUE,
572e2857 4804 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4805 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE,
572e2857 4806 POOL_CHECK_READONLY },
9babb374 4807 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE,
572e2857 4808 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4809 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE,
572e2857 4810 POOL_CHECK_NONE },
9babb374 4811 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE,
572e2857 4812 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4813 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE,
572e2857 4814 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4815 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE,
572e2857 4816 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4817 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE,
572e2857 4818 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4819 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE,
572e2857 4820 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4821 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE,
572e2857 4822 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4823 { zfs_ioc_vdev_setfru, zfs_secpolicy_config, POOL_NAME, B_FALSE,
572e2857 4824 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4825 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
572e2857 4826 POOL_CHECK_SUSPENDED },
9babb374 4827 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
572e2857 4828 POOL_CHECK_NONE },
9babb374 4829 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
572e2857 4830 POOL_CHECK_SUSPENDED },
9babb374 4831 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
572e2857
BB		 4832 POOL_CHECK_SUSPENDED },
4833 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE,
4834 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
60101509
BB		 4835 { zfs_ioc_create_minor, zfs_secpolicy_config, DATASET_NAME, B_FALSE,
4836 POOL_CHECK_NONE },
4837 { zfs_ioc_remove_minor, zfs_secpolicy_config, DATASET_NAME, B_FALSE,
4838 POOL_CHECK_NONE },
572e2857
BB		 4839 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE,
4840 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4841 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE,
572e2857 4842 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4843 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE,
572e2857
BB		 4844 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4845 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE,
4846 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4847 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE,
4848 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
330d06f9 4849 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_FALSE,
572e2857 4850 POOL_CHECK_NONE },
9babb374 4851 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE,
572e2857 4852 POOL_CHECK_NONE },
9babb374 4853 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE,
572e2857 4854 POOL_CHECK_NONE },
9babb374 4855 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE,
572e2857 4856 POOL_CHECK_NONE },
9babb374 4857 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE,
572e2857
BB		 4858 POOL_CHECK_NONE },
4859 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4860 POOL_CHECK_NONE },
9babb374 4861 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE,
572e2857 4862 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
330d06f9
MA		 4863 { zfs_ioc_destroy_snaps_nvl, zfs_secpolicy_destroy_recursive,
4864 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4865 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE,
572e2857
BB		 4866 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4867 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_diff, POOL_NAME, B_FALSE,
4868 POOL_CHECK_NONE },
4869 { zfs_ioc_obj_to_path, zfs_secpolicy_diff, DATASET_NAME, B_FALSE,
4870 POOL_CHECK_SUSPENDED },
9babb374 4871 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE,
572e2857 4872 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4873 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE,
572e2857 4874 POOL_CHECK_NONE },
9babb374 4875 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE,
572e2857 4876 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4877 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
572e2857
BB		 4878 POOL_CHECK_NONE },
4879 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE,
4880 POOL_CHECK_NONE },
9babb374 4881 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE,
572e2857 4882 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
9babb374 4883 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE,
572e2857
BB		 4884 POOL_CHECK_NONE },
4885 { zfs_ioc_userspace_one, zfs_secpolicy_userspace_one, DATASET_NAME,
4886 B_FALSE, POOL_CHECK_NONE },
4887 { zfs_ioc_userspace_many, zfs_secpolicy_userspace_many, DATASET_NAME,
4888 B_FALSE, POOL_CHECK_NONE },
9babb374 4889 { zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade,
572e2857
BB		 4890 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4891 { zfs_ioc_hold, zfs_secpolicy_hold, DATASET_NAME, B_TRUE,
4892 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
45d1cae3 4893 { zfs_ioc_release, zfs_secpolicy_release, DATASET_NAME, B_TRUE,
572e2857 4894 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
45d1cae3 4895 { zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
572e2857 4896 POOL_CHECK_SUSPENDED },
428870ff 4897 { zfs_ioc_objset_recvd_props, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
572e2857 4898 POOL_CHECK_NONE },
428870ff 4899 { zfs_ioc_vdev_split, zfs_secpolicy_config, POOL_NAME, B_TRUE,
572e2857
BB		 4900 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4901 { zfs_ioc_next_obj, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4902 POOL_CHECK_NONE },
4903 { zfs_ioc_diff, zfs_secpolicy_diff, DATASET_NAME, B_FALSE,
4904 POOL_CHECK_NONE },
4905 { zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, DATASET_NAME,
4906 B_FALSE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4907 { zfs_ioc_obj_to_stats, zfs_secpolicy_diff, DATASET_NAME, B_FALSE,
26685276
BB		 4908 POOL_CHECK_SUSPENDED },
4909 { zfs_ioc_events_next, zfs_secpolicy_config, NO_NAME, B_FALSE,
4910 POOL_CHECK_NONE },
4911 { zfs_ioc_events_clear, zfs_secpolicy_config, NO_NAME, B_FALSE,
330d06f9
MA		 4912 POOL_CHECK_NONE },
4913 { zfs_ioc_pool_reguid, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4914 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4915 { zfs_ioc_space_written, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4916 POOL_CHECK_SUSPENDED },
4917 { zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4918 POOL_CHECK_SUSPENDED },
1bd201e7
CS		 4919 { zfs_ioc_pool_reopen, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4920 POOL_CHECK_SUSPENDED },
37abac6d
BP		 4921 { zfs_ioc_send_progress, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4922 POOL_CHECK_NONE }
34dc7c2f
BB		 4923};
4924
9babb374 4925int
572e2857
BB		 4926pool_status_check(const char *name, zfs_ioc_namecheck_t type,
4927 zfs_ioc_poolcheck_t check)
9babb374
BB		 4928{
4929 spa_t *spa;
4930 int error;
4931
4932 ASSERT(type == POOL_NAME || type == DATASET_NAME);
4933
572e2857
BB		 4934 if (check & POOL_CHECK_NONE)
4935 return (0);
4936
9babb374
BB		 4937 error = spa_open(name, &spa, FTAG);
4938 if (error == 0) {
572e2857 4939 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa))
9babb374 4940 error = EAGAIN;
572e2857
BB		 4941 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa))
4942 error = EROFS;
9babb374
BB		 4943 spa_close(spa, FTAG);
4944 }
4945 return (error);
4946}
4947
325f0235
BB		 4948static void *
4949zfsdev_get_state_impl(minor_t minor, enum zfsdev_state_type which)
4950{
4951 zfsdev_state_t *zs;
4952
4953 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
4954
4955 for (zs = list_head(&zfsdev_state_list); zs != NULL;
4956 zs = list_next(&zfsdev_state_list, zs)) {
4957 if (zs->zs_minor == minor) {
4958 switch (which) {
4959 case ZST_ONEXIT: return (zs->zs_onexit);
4960 case ZST_ZEVENT: return (zs->zs_zevent);
4961 case ZST_ALL: return (zs);
4962 }
4963 }
4964 }
4965
4966 return NULL;
4967}
4968
4969void *
4970zfsdev_get_state(minor_t minor, enum zfsdev_state_type which)
4971{
4972 void *ptr;
4973
4974 mutex_enter(&zfsdev_state_lock);
4975 ptr = zfsdev_get_state_impl(minor, which);
4976 mutex_exit(&zfsdev_state_lock);
4977
4978 return ptr;
4979}
4980
4981minor_t
4982zfsdev_getminor(struct file *filp)
4983{
4984 ASSERT(filp != NULL);
4985 ASSERT(filp->private_data != NULL);
4986
4987 return (((zfsdev_state_t *)filp->private_data)->zs_minor);
4988}
4989
572e2857 4990/*
325f0235
BB		 4991 * Find a free minor number. The zfsdev_state_list is expected to
4992 * be short since it is only a list of currently open file handles.
572e2857
BB		 4993 */
4994minor_t
4995zfsdev_minor_alloc(void)
4996{
325f0235 4997 static minor_t last_minor = 0;
572e2857
BB		 4998 minor_t m;
4999
5000 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5001
5002 for (m = last_minor + 1; m != last_minor; m++) {
5003 if (m > ZFSDEV_MAX_MINOR)
5004 m = 1;
325f0235 5005 if (zfsdev_get_state_impl(m, ZST_ALL) == NULL) {
572e2857
BB		 5006 last_minor = m;
5007 return (m);
5008 }
5009 }
5010
5011 return (0);
5012}
5013
5014static int
325f0235 5015zfsdev_state_init(struct file *filp)
572e2857 5016{
325f0235 5017 zfsdev_state_t *zs;
572e2857 5018 minor_t minor;
572e2857
BB		 5019
5020 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
572e2857 5021
325f0235
BB		 5022 minor = zfsdev_minor_alloc();
5023 if (minor == 0)
5024 return (ENXIO);
5025
5026 zs = kmem_zalloc( sizeof(zfsdev_state_t), KM_SLEEP);
5027 if (zs == NULL)
5028 return (ENOMEM);
572e2857 5029
325f0235
BB		 5030 zs->zs_file = filp;
5031 zs->zs_minor = minor;
5032 filp->private_data = zs;
572e2857 5033
325f0235
BB		 5034 zfs_onexit_init((zfs_onexit_t **)&zs->zs_onexit);
5035 zfs_zevent_init((zfs_zevent_t **)&zs->zs_zevent);
572e2857 5036
325f0235 5037 list_insert_tail(&zfsdev_state_list, zs);
572e2857
BB		 5038
5039 return (0);
5040}
5041
325f0235
BB		 5042static int
5043zfsdev_state_destroy(struct file *filp)
572e2857 5044{
325f0235 5045 zfsdev_state_t *zs;
572e2857 5046
325f0235
BB		 5047 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5048 ASSERT(filp->private_data != NULL);
572e2857 5049
325f0235
BB		 5050 zs = filp->private_data;
5051 zfs_onexit_destroy(zs->zs_onexit);
5052 zfs_zevent_destroy(zs->zs_zevent);
572e2857 5053
325f0235
BB		 5054 list_remove(&zfsdev_state_list, zs);
5055 kmem_free(zs, sizeof(zfsdev_state_t));
572e2857 5056
325f0235 5057 return 0;
572e2857
BB		 5058}
5059
5060static int
325f0235 5061zfsdev_open(struct inode *ino, struct file *filp)
572e2857 5062{
325f0235 5063 int error;
572e2857 5064
325f0235
BB		 5065 mutex_enter(&zfsdev_state_lock);
5066 error = zfsdev_state_init(filp);
5067 mutex_exit(&zfsdev_state_lock);
572e2857 5068
325f0235 5069 return (-error);
572e2857
BB		 5070}
5071
5072static int
325f0235 5073zfsdev_release(struct inode *ino, struct file *filp)
572e2857 5074{
325f0235 5075 int error;
572e2857
BB		 5076
5077 mutex_enter(&zfsdev_state_lock);
325f0235 5078 error = zfsdev_state_destroy(filp);
572e2857
BB		 5079 mutex_exit(&zfsdev_state_lock);
5080
325f0235 5081 return (-error);
572e2857
BB		 5082}
5083
325f0235
BB		 5084static long
5085zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
34dc7c2f
BB		 5086{
5087 zfs_cmd_t *zc;
5088 uint_t vec;
325f0235 5089 int error, rc, flag = 0;
34dc7c2f
BB		 5090
5091 vec = cmd - ZFS_IOC;
34dc7c2f 5092 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
325f0235 5093 return (-EINVAL);
34dc7c2f 5094
00b46022 5095 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
34dc7c2f 5096
9babb374 5097 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag);
428870ff
BB		 5098 if (error != 0)
5099 error = EFAULT;
34dc7c2f 5100
428870ff 5101 if ((error == 0) && !(flag & FKIOCTL))
f01b360e 5102 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, CRED());
34dc7c2f
BB		 5103
5104 /*
5105 * Ensure that all pool/dataset names are valid before we pass down to
5106 * the lower layers.
5107 */
5108 if (error == 0) {
5109 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
9babb374 5110 zc->zc_iflags = flag & FKIOCTL;
34dc7c2f
BB		 5111 switch (zfs_ioc_vec[vec].zvec_namecheck) {
5112 case POOL_NAME:
5113 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
5114 error = EINVAL;
572e2857
BB		 5115 error = pool_status_check(zc->zc_name,
5116 zfs_ioc_vec[vec].zvec_namecheck,
5117 zfs_ioc_vec[vec].zvec_pool_check);
34dc7c2f
BB		 5118 break;
5119
5120 case DATASET_NAME:
5121 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
5122 error = EINVAL;
572e2857
BB		 5123 error = pool_status_check(zc->zc_name,
5124 zfs_ioc_vec[vec].zvec_namecheck,
5125 zfs_ioc_vec[vec].zvec_pool_check);
34dc7c2f
BB		 5126 break;
5127
5128 case NO_NAME:
5129 break;
5130 }
5131 }
5132
5133 if (error == 0)
5134 error = zfs_ioc_vec[vec].zvec_func(zc);
5135
9babb374 5136 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag);
34dc7c2f 5137 if (error == 0) {
428870ff
BB		 5138 if (rc != 0)
5139 error = EFAULT;
9babb374 5140 if (zfs_ioc_vec[vec].zvec_his_log)
34dc7c2f
BB		 5141 zfs_log_history(zc);
5142 }
5143
5144 kmem_free(zc, sizeof (zfs_cmd_t));
325f0235 5145 return (-error);
34dc7c2f
BB		 5146}
5147
325f0235
BB		 5148#ifdef CONFIG_COMPAT
5149static long
5150zfsdev_compat_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
34dc7c2f 5151{
325f0235
BB		 5152 return zfsdev_ioctl(filp, cmd, arg);
5153}
5154#else
f5e79474 5155#define zfsdev_compat_ioctl NULL
325f0235 5156#endif
34dc7c2f 5157
325f0235
BB		 5158static const struct file_operations zfsdev_fops = {
5159 .open = zfsdev_open,
5160 .release = zfsdev_release,
5161 .unlocked_ioctl = zfsdev_ioctl,
5162 .compat_ioctl = zfsdev_compat_ioctl,
5163 .owner = THIS_MODULE,
5164};
34dc7c2f 5165
325f0235
BB		 5166static struct miscdevice zfs_misc = {
5167 .minor = MISC_DYNAMIC_MINOR,
5168 .name = ZFS_DRIVER,
5169 .fops = &zfsdev_fops,
5170};
34dc7c2f
BB		 5171
5172static int
325f0235 5173zfs_attach(void)
34dc7c2f 5174{
325f0235 5175 int error;
34dc7c2f 5176
325f0235
BB		 5177 mutex_init(&zfsdev_state_lock, NULL, MUTEX_DEFAULT, NULL);
5178 list_create(&zfsdev_state_list, sizeof (zfsdev_state_t),
5179 offsetof(zfsdev_state_t, zs_next));
34dc7c2f 5180
325f0235
BB		 5181 error = misc_register(&zfs_misc);
5182 if (error) {
5183 printk(KERN_INFO "ZFS: misc_register() failed %d\n", error);
5184 return (error);
5185 }
34dc7c2f 5186
325f0235 5187 return (0);
34dc7c2f
BB		 5188}
5189
325f0235
BB		 5190static void
5191zfs_detach(void)
34dc7c2f 5192{
325f0235 5193 int error;
34dc7c2f 5194
325f0235
BB		 5195 error = misc_deregister(&zfs_misc);
5196 if (error)
5197 printk(KERN_INFO "ZFS: misc_deregister() failed %d\n", error);
34dc7c2f 5198
325f0235
BB		 5199 mutex_destroy(&zfsdev_state_lock);
5200 list_destroy(&zfsdev_state_list);
34dc7c2f
BB		 5201}
5202
d5446cfc 5203uint_t zfs_fsyncer_key;
34dc7c2f 5204extern uint_t rrw_tsd_key;
325f0235
BB		 5205
5206#ifdef DEBUG
5207#define ZFS_DEBUG_STR " (DEBUG mode)"
5208#else
5209#define ZFS_DEBUG_STR ""
5210#endif
34dc7c2f
BB		 5211
5212int
5213_init(void)
5214{
5215 int error;
5216
5217 spa_init(FREAD | FWRITE);
5218 zfs_init();
34dc7c2f 5219
325f0235
BB		 5220 if ((error = zvol_init()) != 0)
5221 goto out1;
5222
5223 if ((error = zfs_attach()) != 0)
5224 goto out2;
34dc7c2f 5225
d5446cfc 5226 tsd_create(&zfs_fsyncer_key, NULL);
34dc7c2f
BB		 5227 tsd_create(&rrw_tsd_key, NULL);
5228
4b5d425f 5229 printk(KERN_NOTICE "ZFS: Loaded module v%s-%s%s, "
a23cc0a4 5230 "ZFS pool version %s, ZFS filesystem version %s\n",
4b5d425f 5231 ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR,
a23cc0a4 5232 SPA_VERSION_STRING, ZPL_VERSION_STRING);
34dc7c2f
BB		 5233
5234 return (0);
325f0235
BB		 5235
5236out2:
5237 (void) zvol_fini();
5238out1:
5239 zfs_fini();
5240 spa_fini();
4b5d425f
BB		 5241 printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s-%s%s"
5242 ", rc = %d\n", ZFS_META_VERSION, ZFS_META_RELEASE,
5243 ZFS_DEBUG_STR, error);
325f0235
BB		 5244
5245 return (error);
34dc7c2f
BB		 5246}
5247
5248int
5249_fini(void)
5250{
325f0235 5251 zfs_detach();
34dc7c2f
BB		 5252 zvol_fini();
5253 zfs_fini();
5254 spa_fini();
46e18b3f 5255
d5446cfc 5256 tsd_destroy(&zfs_fsyncer_key);
3fc050aa 5257 tsd_destroy(&rrw_tsd_key);
34dc7c2f 5258
4b5d425f
BB		 5259 printk(KERN_NOTICE "ZFS: Unloaded module v%s-%s%s\n",
5260 ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR);
34dc7c2f 5261
325f0235 5262 return (0);
34dc7c2f 5263}
325f0235
BB		 5264
5265#ifdef HAVE_SPL
5266spl_module_init(_init);
5267spl_module_exit(_fini);
5268
5269MODULE_DESCRIPTION("ZFS");
5270MODULE_AUTHOR(ZFS_META_AUTHOR);
5271MODULE_LICENSE(ZFS_META_LICENSE);
5272#endif /* HAVE_SPL */
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