4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
23 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Portions Copyright 2011 Martin Matuska
25 * Portions Copyright 2012 Pawel Jakub Dawidek <pawel@dawidek.net>
26 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
27 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
28 * Copyright (c) 2012 by Delphix. All rights reserved.
29 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
30 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
31 * Copyright (c) 2012 by Delphix. All rights reserved.
37 * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage
38 * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool.
40 * There are two ways that we handle ioctls: the legacy way where almost
41 * all of the logic is in the ioctl callback, and the new way where most
42 * of the marshalling is handled in the common entry point, zfsdev_ioctl().
44 * Non-legacy ioctls should be registered by calling
45 * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked
46 * from userland by lzc_ioctl().
48 * The registration arguments are as follows:
51 * The name of the ioctl. This is used for history logging. If the
52 * ioctl returns successfully (the callback returns 0), and allow_log
53 * is true, then a history log entry will be recorded with the input &
54 * output nvlists. The log entry can be printed with "zpool history -i".
57 * The ioctl request number, which userland will pass to ioctl(2).
58 * The ioctl numbers can change from release to release, because
59 * the caller (libzfs) must be matched to the kernel.
61 * zfs_secpolicy_func_t *secpolicy
62 * This function will be called before the zfs_ioc_func_t, to
63 * determine if this operation is permitted. It should return EPERM
64 * on failure, and 0 on success. Checks include determining if the
65 * dataset is visible in this zone, and if the user has either all
66 * zfs privileges in the zone (SYS_MOUNT), or has been granted permission
67 * to do this operation on this dataset with "zfs allow".
69 * zfs_ioc_namecheck_t namecheck
70 * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool
71 * name, a dataset name, or nothing. If the name is not well-formed,
72 * the ioctl will fail and the callback will not be called.
73 * Therefore, the callback can assume that the name is well-formed
74 * (e.g. is null-terminated, doesn't have more than one '@' character,
75 * doesn't have invalid characters).
77 * zfs_ioc_poolcheck_t pool_check
78 * This specifies requirements on the pool state. If the pool does
79 * not meet them (is suspended or is readonly), the ioctl will fail
80 * and the callback will not be called. If any checks are specified
81 * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME.
82 * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED |
83 * POOL_CHECK_READONLY).
85 * boolean_t smush_outnvlist
86 * If smush_outnvlist is true, then the output is presumed to be a
87 * list of errors, and it will be "smushed" down to fit into the
88 * caller's buffer, by removing some entries and replacing them with a
89 * single "N_MORE_ERRORS" entry indicating how many were removed. See
90 * nvlist_smush() for details. If smush_outnvlist is false, and the
91 * outnvlist does not fit into the userland-provided buffer, then the
92 * ioctl will fail with ENOMEM.
94 * zfs_ioc_func_t *func
95 * The callback function that will perform the operation.
97 * The callback should return 0 on success, or an error number on
98 * failure. If the function fails, the userland ioctl will return -1,
99 * and errno will be set to the callback's return value. The callback
100 * will be called with the following arguments:
103 * The name of the pool or dataset to operate on, from
104 * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the
105 * expected type (pool, dataset, or none).
108 * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or
109 * NULL if no input nvlist was provided. Changes to this nvlist are
110 * ignored. If the input nvlist could not be deserialized, the
111 * ioctl will fail and the callback will not be called.
114 * The output nvlist, initially empty. The callback can fill it in,
115 * and it will be returned to userland by serializing it into
116 * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization
117 * fails (e.g. because the caller didn't supply a large enough
118 * buffer), then the overall ioctl will fail. See the
119 * 'smush_nvlist' argument above for additional behaviors.
121 * There are two typical uses of the output nvlist:
122 * - To return state, e.g. property values. In this case,
123 * smush_outnvlist should be false. If the buffer was not large
124 * enough, the caller will reallocate a larger buffer and try
127 * - To return multiple errors from an ioctl which makes on-disk
128 * changes. In this case, smush_outnvlist should be true.
129 * Ioctls which make on-disk modifications should generally not
130 * use the outnvl if they succeed, because the caller can not
131 * distinguish between the operation failing, and
132 * deserialization failing.
135 #include <sys/types.h>
136 #include <sys/param.h>
137 #include <sys/errno.h>
140 #include <sys/modctl.h>
141 #include <sys/open.h>
142 #include <sys/file.h>
143 #include <sys/kmem.h>
144 #include <sys/conf.h>
145 #include <sys/cmn_err.h>
146 #include <sys/stat.h>
147 #include <sys/zfs_ioctl.h>
148 #include <sys/zfs_vfsops.h>
149 #include <sys/zfs_znode.h>
152 #include <sys/spa_impl.h>
153 #include <sys/vdev.h>
154 #include <sys/priv_impl.h>
156 #include <sys/dsl_dir.h>
157 #include <sys/dsl_dataset.h>
158 #include <sys/dsl_prop.h>
159 #include <sys/dsl_deleg.h>
160 #include <sys/dmu_objset.h>
161 #include <sys/dmu_impl.h>
162 #include <sys/dmu_tx.h>
164 #include <sys/sunddi.h>
165 #include <sys/sunldi.h>
166 #include <sys/policy.h>
167 #include <sys/zone.h>
168 #include <sys/nvpair.h>
169 #include <sys/pathname.h>
170 #include <sys/mount.h>
172 #include <sys/fs/zfs.h>
173 #include <sys/zfs_ctldir.h>
174 #include <sys/zfs_dir.h>
175 #include <sys/zfs_onexit.h>
176 #include <sys/zvol.h>
177 #include <sys/dsl_scan.h>
178 #include <sharefs/share.h>
179 #include <sys/fm/util.h>
181 #include <sys/dmu_send.h>
182 #include <sys/dsl_destroy.h>
183 #include <sys/dsl_userhold.h>
184 #include <sys/zfeature.h>
186 #include <linux/miscdevice.h>
188 #include "zfs_namecheck.h"
189 #include "zfs_prop.h"
190 #include "zfs_deleg.h"
191 #include "zfs_comutil.h"
193 kmutex_t zfsdev_state_lock;
194 list_t zfsdev_state_list;
196 extern void zfs_init(void);
197 extern void zfs_fini(void);
199 uint_t zfs_fsyncer_key;
200 extern uint_t rrw_tsd_key;
201 static uint_t zfs_allow_log_key;
203 typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *);
204 typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *);
205 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *);
211 } zfs_ioc_namecheck_t;
214 POOL_CHECK_NONE = 1 << 0,
215 POOL_CHECK_SUSPENDED = 1 << 1,
216 POOL_CHECK_READONLY = 1 << 2,
217 } zfs_ioc_poolcheck_t;
219 typedef struct zfs_ioc_vec {
220 zfs_ioc_legacy_func_t *zvec_legacy_func;
221 zfs_ioc_func_t *zvec_func;
222 zfs_secpolicy_func_t *zvec_secpolicy;
223 zfs_ioc_namecheck_t zvec_namecheck;
224 boolean_t zvec_allow_log;
225 zfs_ioc_poolcheck_t zvec_pool_check;
226 boolean_t zvec_smush_outnvlist;
227 const char *zvec_name;
230 /* This array is indexed by zfs_userquota_prop_t */
231 static const char *userquota_perms[] = {
232 ZFS_DELEG_PERM_USERUSED,
233 ZFS_DELEG_PERM_USERQUOTA,
234 ZFS_DELEG_PERM_GROUPUSED,
235 ZFS_DELEG_PERM_GROUPQUOTA,
238 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc);
239 static int zfs_check_settable(const char *name, nvpair_t *property,
241 static int zfs_check_clearable(char *dataset, nvlist_t *props,
243 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *,
245 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *);
246 static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp);
248 static int zfs_prop_activate_feature(spa_t *spa, zfeature_info_t *feature);
251 history_str_free(char *buf)
253 kmem_free(buf, HIS_MAX_RECORD_LEN);
257 history_str_get(zfs_cmd_t *zc)
261 if (zc->zc_history == 0)
264 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP | KM_NODEBUG);
265 if (copyinstr((void *)(uintptr_t)zc->zc_history,
266 buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
267 history_str_free(buf);
271 buf[HIS_MAX_RECORD_LEN -1] = '\0';
277 * Check to see if the named dataset is currently defined as bootable
280 zfs_is_bootfs(const char *name)
284 if (dmu_objset_hold(name, FTAG, &os) == 0) {
286 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os)));
287 dmu_objset_rele(os, FTAG);
294 * zfs_earlier_version
296 * Return non-zero if the spa version is less than requested version.
299 zfs_earlier_version(const char *name, int version)
303 if (spa_open(name, &spa, FTAG) == 0) {
304 if (spa_version(spa) < version) {
305 spa_close(spa, FTAG);
308 spa_close(spa, FTAG);
314 * zpl_earlier_version
316 * Return TRUE if the ZPL version is less than requested version.
319 zpl_earlier_version(const char *name, int version)
322 boolean_t rc = B_TRUE;
324 if (dmu_objset_hold(name, FTAG, &os) == 0) {
327 if (dmu_objset_type(os) != DMU_OST_ZFS) {
328 dmu_objset_rele(os, FTAG);
331 /* XXX reading from non-owned objset */
332 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0)
333 rc = zplversion < version;
334 dmu_objset_rele(os, FTAG);
340 zfs_log_history(zfs_cmd_t *zc)
345 if ((buf = history_str_get(zc)) == NULL)
348 if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
349 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
350 (void) spa_history_log(spa, buf);
351 spa_close(spa, FTAG);
353 history_str_free(buf);
357 * Policy for top-level read operations (list pools). Requires no privileges,
358 * and can be used in the local zone, as there is no associated dataset.
362 zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
368 * Policy for dataset read operations (list children, get statistics). Requires
369 * no privileges, but must be visible in the local zone.
373 zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
375 if (INGLOBALZONE(curproc) ||
376 zone_dataset_visible(zc->zc_name, NULL))
383 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr)
388 * The dataset must be visible by this zone -- check this first
389 * so they don't see EPERM on something they shouldn't know about.
391 if (!INGLOBALZONE(curproc) &&
392 !zone_dataset_visible(dataset, &writable))
395 if (INGLOBALZONE(curproc)) {
397 * If the fs is zoned, only root can access it from the
400 if (secpolicy_zfs(cr) && zoned)
404 * If we are in a local zone, the 'zoned' property must be set.
409 /* must be writable by this zone */
417 zfs_dozonecheck(const char *dataset, cred_t *cr)
421 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
424 return (zfs_dozonecheck_impl(dataset, zoned, cr));
428 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr)
432 if (dsl_prop_get_int_ds(ds, "zoned", &zoned))
435 return (zfs_dozonecheck_impl(dataset, zoned, cr));
439 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds,
440 const char *perm, cred_t *cr)
444 error = zfs_dozonecheck_ds(name, ds, cr);
446 error = secpolicy_zfs(cr);
448 error = dsl_deleg_access_impl(ds, perm, cr);
454 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
460 error = dsl_pool_hold(name, FTAG, &dp);
464 error = dsl_dataset_hold(dp, name, FTAG, &ds);
466 dsl_pool_rele(dp, FTAG);
470 error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr);
472 dsl_dataset_rele(ds, FTAG);
473 dsl_pool_rele(dp, FTAG);
478 * Policy for setting the security label property.
480 * Returns 0 for success, non-zero for access and other errors.
483 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr)
486 char ds_hexsl[MAXNAMELEN];
487 bslabel_t ds_sl, new_sl;
488 boolean_t new_default = FALSE;
490 int needed_priv = -1;
493 /* First get the existing dataset label. */
494 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL),
495 1, sizeof (ds_hexsl), &ds_hexsl, NULL);
499 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
502 /* The label must be translatable */
503 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0))
507 * In a non-global zone, disallow attempts to set a label that
508 * doesn't match that of the zone; otherwise no other checks
511 if (!INGLOBALZONE(curproc)) {
512 if (new_default || !blequal(&new_sl, CR_SL(CRED())))
518 * For global-zone datasets (i.e., those whose zoned property is
519 * "off", verify that the specified new label is valid for the
522 if (dsl_prop_get_integer(name,
523 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL))
526 if (zfs_check_global_label(name, strval) != 0)
531 * If the existing dataset label is nondefault, check if the
532 * dataset is mounted (label cannot be changed while mounted).
533 * Get the zfs_sb_t; if there isn't one, then the dataset isn't
534 * mounted (or isn't a dataset, doesn't exist, ...).
536 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) {
538 static char *setsl_tag = "setsl_tag";
541 * Try to own the dataset; abort if there is any error,
542 * (e.g., already mounted, in use, or other error).
544 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE,
549 dmu_objset_disown(os, setsl_tag);
552 needed_priv = PRIV_FILE_DOWNGRADE_SL;
556 if (hexstr_to_label(strval, &new_sl) != 0)
559 if (blstrictdom(&ds_sl, &new_sl))
560 needed_priv = PRIV_FILE_DOWNGRADE_SL;
561 else if (blstrictdom(&new_sl, &ds_sl))
562 needed_priv = PRIV_FILE_UPGRADE_SL;
564 /* dataset currently has a default label */
566 needed_priv = PRIV_FILE_UPGRADE_SL;
570 if (needed_priv != -1)
571 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL));
575 #endif /* HAVE_MLSLABEL */
579 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval,
585 * Check permissions for special properties.
592 * Disallow setting of 'zoned' from within a local zone.
594 if (!INGLOBALZONE(curproc))
599 if (!INGLOBALZONE(curproc)) {
601 char setpoint[MAXNAMELEN];
603 * Unprivileged users are allowed to modify the
604 * quota on things *under* (ie. contained by)
605 * the thing they own.
607 if (dsl_prop_get_integer(dsname, "zoned", &zoned,
610 if (!zoned || strlen(dsname) <= strlen(setpoint))
615 case ZFS_PROP_MLSLABEL:
616 if (!is_system_labeled())
619 if (nvpair_value_string(propval, &strval) == 0) {
622 err = zfs_set_slabel_policy(dsname, strval, CRED());
629 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr));
634 zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
638 error = zfs_dozonecheck(zc->zc_name, cr);
643 * permission to set permissions will be evaluated later in
644 * dsl_deleg_can_allow()
651 zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
653 return (zfs_secpolicy_write_perms(zc->zc_name,
654 ZFS_DELEG_PERM_ROLLBACK, cr));
659 zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
667 * Generate the current snapshot name from the given objsetid, then
668 * use that name for the secpolicy/zone checks.
670 cp = strchr(zc->zc_name, '@');
673 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
677 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
679 dsl_pool_rele(dp, FTAG);
683 dsl_dataset_name(ds, zc->zc_name);
685 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds,
686 ZFS_DELEG_PERM_SEND, cr);
687 dsl_dataset_rele(ds, FTAG);
688 dsl_pool_rele(dp, FTAG);
695 zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
697 return (zfs_secpolicy_write_perms(zc->zc_name,
698 ZFS_DELEG_PERM_SEND, cr));
701 #ifdef HAVE_SMB_SHARE
704 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
709 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
710 NO_FOLLOW, NULL, &vp)) != 0)
713 /* Now make sure mntpnt and dataset are ZFS */
715 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
716 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
717 zc->zc_name) != 0)) {
723 return (dsl_deleg_access(zc->zc_name,
724 ZFS_DELEG_PERM_SHARE, cr));
726 #endif /* HAVE_SMB_SHARE */
729 zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
731 #ifdef HAVE_SMB_SHARE
732 if (!INGLOBALZONE(curproc))
735 if (secpolicy_nfs(cr) == 0) {
738 return (zfs_secpolicy_deleg_share(zc, innvl, cr));
742 #endif /* HAVE_SMB_SHARE */
746 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
748 #ifdef HAVE_SMB_SHARE
749 if (!INGLOBALZONE(curproc))
752 if (secpolicy_smb(cr) == 0) {
755 return (zfs_secpolicy_deleg_share(zc, innvl, cr));
759 #endif /* HAVE_SMB_SHARE */
763 zfs_get_parent(const char *datasetname, char *parent, int parentsize)
768 * Remove the @bla or /bla from the end of the name to get the parent.
770 (void) strncpy(parent, datasetname, parentsize);
771 cp = strrchr(parent, '@');
775 cp = strrchr(parent, '/');
785 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
789 if ((error = zfs_secpolicy_write_perms(name,
790 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
793 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
798 zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
800 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
804 * Destroying snapshots with delegated permissions requires
805 * descendant mount and destroy permissions.
809 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
812 nvpair_t *pair, *nextpair;
815 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
817 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
822 error = dsl_pool_hold(nvpair_name(pair), FTAG, &dp);
825 nextpair = nvlist_next_nvpair(snaps, pair);
826 error = dsl_dataset_hold(dp, nvpair_name(pair), FTAG, &ds);
828 dsl_dataset_rele(ds, FTAG);
829 dsl_pool_rele(dp, FTAG);
832 error = zfs_secpolicy_destroy_perms(nvpair_name(pair),
834 } else if (error == ENOENT) {
836 * Ignore any snapshots that don't exist (we consider
837 * them "already destroyed"). Remove the name from the
838 * nvl here in case the snapshot is created between
839 * now and when we try to destroy it (in which case
840 * we don't want to destroy it since we haven't
841 * checked for permission).
843 fnvlist_remove_nvpair(snaps, pair);
854 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
856 char parentname[MAXNAMELEN];
859 if ((error = zfs_secpolicy_write_perms(from,
860 ZFS_DELEG_PERM_RENAME, cr)) != 0)
863 if ((error = zfs_secpolicy_write_perms(from,
864 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
867 if ((error = zfs_get_parent(to, parentname,
868 sizeof (parentname))) != 0)
871 if ((error = zfs_secpolicy_write_perms(parentname,
872 ZFS_DELEG_PERM_CREATE, cr)) != 0)
875 if ((error = zfs_secpolicy_write_perms(parentname,
876 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
884 zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
886 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));
891 zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
894 dsl_dataset_t *clone;
897 error = zfs_secpolicy_write_perms(zc->zc_name,
898 ZFS_DELEG_PERM_PROMOTE, cr);
902 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
906 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone);
909 char parentname[MAXNAMELEN];
910 dsl_dataset_t *origin = NULL;
914 error = dsl_dataset_hold_obj(dd->dd_pool,
915 dd->dd_phys->dd_origin_obj, FTAG, &origin);
917 dsl_dataset_rele(clone, FTAG);
918 dsl_pool_rele(dp, FTAG);
922 error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone,
923 ZFS_DELEG_PERM_MOUNT, cr);
925 dsl_dataset_name(origin, parentname);
927 error = zfs_secpolicy_write_perms_ds(parentname, origin,
928 ZFS_DELEG_PERM_PROMOTE, cr);
930 dsl_dataset_rele(clone, FTAG);
931 dsl_dataset_rele(origin, FTAG);
933 dsl_pool_rele(dp, FTAG);
939 zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
943 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
944 ZFS_DELEG_PERM_RECEIVE, cr)) != 0)
947 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
948 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
951 return (zfs_secpolicy_write_perms(zc->zc_name,
952 ZFS_DELEG_PERM_CREATE, cr));
956 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
958 return (zfs_secpolicy_write_perms(name,
959 ZFS_DELEG_PERM_SNAPSHOT, cr));
963 * Check for permission to create each snapshot in the nvlist.
967 zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
973 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
975 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
976 pair = nvlist_next_nvpair(snaps, pair)) {
977 char *name = nvpair_name(pair);
978 char *atp = strchr(name, '@');
985 error = zfs_secpolicy_snapshot_perms(name, cr);
995 zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
998 * Even root must have a proper TSD so that we know what pool
1001 if (tsd_get(zfs_allow_log_key) == NULL)
1007 zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1009 char parentname[MAXNAMELEN];
1013 if ((error = zfs_get_parent(zc->zc_name, parentname,
1014 sizeof (parentname))) != 0)
1017 if (nvlist_lookup_string(innvl, "origin", &origin) == 0 &&
1018 (error = zfs_secpolicy_write_perms(origin,
1019 ZFS_DELEG_PERM_CLONE, cr)) != 0)
1022 if ((error = zfs_secpolicy_write_perms(parentname,
1023 ZFS_DELEG_PERM_CREATE, cr)) != 0)
1026 return (zfs_secpolicy_write_perms(parentname,
1027 ZFS_DELEG_PERM_MOUNT, cr));
1031 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires
1032 * SYS_CONFIG privilege, which is not available in a local zone.
1036 zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1038 if (secpolicy_sys_config(cr, B_FALSE) != 0)
1045 * Policy for object to name lookups.
1049 zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1053 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0)
1056 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr);
1061 * Policy for fault injection. Requires all privileges.
1065 zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1067 return (secpolicy_zinject(cr));
1072 zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1074 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
1076 if (prop == ZPROP_INVAL) {
1077 if (!zfs_prop_user(zc->zc_value))
1079 return (zfs_secpolicy_write_perms(zc->zc_name,
1080 ZFS_DELEG_PERM_USERPROP, cr));
1082 return (zfs_secpolicy_setprop(zc->zc_name, prop,
1088 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1090 int err = zfs_secpolicy_read(zc, innvl, cr);
1094 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
1097 if (zc->zc_value[0] == 0) {
1099 * They are asking about a posix uid/gid. If it's
1100 * themself, allow it.
1102 if (zc->zc_objset_type == ZFS_PROP_USERUSED ||
1103 zc->zc_objset_type == ZFS_PROP_USERQUOTA) {
1104 if (zc->zc_guid == crgetuid(cr))
1107 if (groupmember(zc->zc_guid, cr))
1112 return (zfs_secpolicy_write_perms(zc->zc_name,
1113 userquota_perms[zc->zc_objset_type], cr));
1117 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1119 int err = zfs_secpolicy_read(zc, innvl, cr);
1123 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
1126 return (zfs_secpolicy_write_perms(zc->zc_name,
1127 userquota_perms[zc->zc_objset_type], cr));
1132 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1134 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION,
1140 zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1146 error = nvlist_lookup_nvlist(innvl, "holds", &holds);
1150 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
1151 pair = nvlist_next_nvpair(holds, pair)) {
1152 char fsname[MAXNAMELEN];
1153 error = dmu_fsname(nvpair_name(pair), fsname);
1156 error = zfs_secpolicy_write_perms(fsname,
1157 ZFS_DELEG_PERM_HOLD, cr);
1166 zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1171 for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL;
1172 pair = nvlist_next_nvpair(innvl, pair)) {
1173 char fsname[MAXNAMELEN];
1174 error = dmu_fsname(nvpair_name(pair), fsname);
1177 error = zfs_secpolicy_write_perms(fsname,
1178 ZFS_DELEG_PERM_RELEASE, cr);
1186 * Policy for allowing temporary snapshots to be taken or released
1189 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
1192 * A temporary snapshot is the same as a snapshot,
1193 * hold, destroy and release all rolled into one.
1194 * Delegated diff alone is sufficient that we allow this.
1198 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
1199 ZFS_DELEG_PERM_DIFF, cr)) == 0)
1202 error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr);
1204 error = zfs_secpolicy_hold(zc, innvl, cr);
1206 error = zfs_secpolicy_release(zc, innvl, cr);
1208 error = zfs_secpolicy_destroy(zc, innvl, cr);
1213 * Returns the nvlist as specified by the user in the zfs_cmd_t.
1216 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp)
1220 nvlist_t *list = NULL;
1223 * Read in and unpack the user-supplied nvlist.
1228 packed = kmem_alloc(size, KM_SLEEP | KM_NODEBUG);
1230 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
1232 kmem_free(packed, size);
1236 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) {
1237 kmem_free(packed, size);
1241 kmem_free(packed, size);
1248 * Reduce the size of this nvlist until it can be serialized in 'max' bytes.
1249 * Entries will be removed from the end of the nvlist, and one int32 entry
1250 * named "N_MORE_ERRORS" will be added indicating how many entries were
1254 nvlist_smush(nvlist_t *errors, size_t max)
1258 size = fnvlist_size(errors);
1261 nvpair_t *more_errors;
1267 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0);
1268 more_errors = nvlist_prev_nvpair(errors, NULL);
1271 nvpair_t *pair = nvlist_prev_nvpair(errors,
1273 fnvlist_remove_nvpair(errors, pair);
1275 size = fnvlist_size(errors);
1276 } while (size > max);
1278 fnvlist_remove_nvpair(errors, more_errors);
1279 fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n);
1280 ASSERT3U(fnvlist_size(errors), <=, max);
1287 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
1289 char *packed = NULL;
1293 size = fnvlist_size(nvl);
1295 if (size > zc->zc_nvlist_dst_size) {
1298 packed = fnvlist_pack(nvl, &size);
1299 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
1300 size, zc->zc_iflags) != 0)
1302 fnvlist_pack_free(packed, size);
1305 zc->zc_nvlist_dst_size = size;
1306 zc->zc_nvlist_dst_filled = B_TRUE;
1311 get_zfs_sb(const char *dsname, zfs_sb_t **zsbp)
1316 error = dmu_objset_hold(dsname, FTAG, &os);
1319 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1320 dmu_objset_rele(os, FTAG);
1324 mutex_enter(&os->os_user_ptr_lock);
1325 *zsbp = dmu_objset_get_user(os);
1326 if (*zsbp && (*zsbp)->z_sb) {
1327 atomic_inc(&((*zsbp)->z_sb->s_active));
1331 mutex_exit(&os->os_user_ptr_lock);
1332 dmu_objset_rele(os, FTAG);
1337 * Find a zfs_sb_t for a mounted filesystem, or create our own, in which
1338 * case its z_sb will be NULL, and it will be opened as the owner.
1339 * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER,
1340 * which prevents all inode ops from running.
1343 zfs_sb_hold(const char *name, void *tag, zfs_sb_t **zsbp, boolean_t writer)
1347 if (get_zfs_sb(name, zsbp) != 0)
1348 error = zfs_sb_create(name, zsbp);
1350 rrw_enter(&(*zsbp)->z_teardown_lock, (writer) ? RW_WRITER :
1352 if ((*zsbp)->z_unmounted) {
1354 * XXX we could probably try again, since the unmounting
1355 * thread should be just about to disassociate the
1356 * objset from the zfsvfs.
1358 rrw_exit(&(*zsbp)->z_teardown_lock, tag);
1366 zfs_sb_rele(zfs_sb_t *zsb, void *tag)
1368 rrw_exit(&zsb->z_teardown_lock, tag);
1371 deactivate_super(zsb->z_sb);
1373 dmu_objset_disown(zsb->z_os, zsb);
1379 zfs_ioc_pool_create(zfs_cmd_t *zc)
1382 nvlist_t *config, *props = NULL;
1383 nvlist_t *rootprops = NULL;
1384 nvlist_t *zplprops = NULL;
1386 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1387 zc->zc_iflags, &config)))
1390 if (zc->zc_nvlist_src_size != 0 && (error =
1391 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1392 zc->zc_iflags, &props))) {
1393 nvlist_free(config);
1398 nvlist_t *nvl = NULL;
1399 uint64_t version = SPA_VERSION;
1401 (void) nvlist_lookup_uint64(props,
1402 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version);
1403 if (!SPA_VERSION_IS_SUPPORTED(version)) {
1405 goto pool_props_bad;
1407 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl);
1409 error = nvlist_dup(nvl, &rootprops, KM_SLEEP);
1411 nvlist_free(config);
1415 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS);
1417 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1418 error = zfs_fill_zplprops_root(version, rootprops,
1421 goto pool_props_bad;
1424 error = spa_create(zc->zc_name, config, props, zplprops);
1427 * Set the remaining root properties
1429 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name,
1430 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0)
1431 (void) spa_destroy(zc->zc_name);
1434 nvlist_free(rootprops);
1435 nvlist_free(zplprops);
1436 nvlist_free(config);
1443 zfs_ioc_pool_destroy(zfs_cmd_t *zc)
1446 zfs_log_history(zc);
1447 error = spa_destroy(zc->zc_name);
1449 zvol_remove_minors(zc->zc_name);
1454 zfs_ioc_pool_import(zfs_cmd_t *zc)
1456 nvlist_t *config, *props = NULL;
1460 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1461 zc->zc_iflags, &config)) != 0)
1464 if (zc->zc_nvlist_src_size != 0 && (error =
1465 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1466 zc->zc_iflags, &props))) {
1467 nvlist_free(config);
1471 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
1472 guid != zc->zc_guid)
1475 error = spa_import(zc->zc_name, config, props, zc->zc_cookie);
1477 if (zc->zc_nvlist_dst != 0) {
1480 if ((err = put_nvlist(zc, config)) != 0)
1484 nvlist_free(config);
1493 zfs_ioc_pool_export(zfs_cmd_t *zc)
1496 boolean_t force = (boolean_t)zc->zc_cookie;
1497 boolean_t hardforce = (boolean_t)zc->zc_guid;
1499 zfs_log_history(zc);
1500 error = spa_export(zc->zc_name, NULL, force, hardforce);
1502 zvol_remove_minors(zc->zc_name);
1507 zfs_ioc_pool_configs(zfs_cmd_t *zc)
1512 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
1515 error = put_nvlist(zc, configs);
1517 nvlist_free(configs);
1524 * zc_name name of the pool
1527 * zc_cookie real errno
1528 * zc_nvlist_dst config nvlist
1529 * zc_nvlist_dst_size size of config nvlist
1532 zfs_ioc_pool_stats(zfs_cmd_t *zc)
1538 error = spa_get_stats(zc->zc_name, &config, zc->zc_value,
1539 sizeof (zc->zc_value));
1541 if (config != NULL) {
1542 ret = put_nvlist(zc, config);
1543 nvlist_free(config);
1546 * The config may be present even if 'error' is non-zero.
1547 * In this case we return success, and preserve the real errno
1550 zc->zc_cookie = error;
1559 * Try to import the given pool, returning pool stats as appropriate so that
1560 * user land knows which devices are available and overall pool health.
1563 zfs_ioc_pool_tryimport(zfs_cmd_t *zc)
1565 nvlist_t *tryconfig, *config;
1568 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1569 zc->zc_iflags, &tryconfig)) != 0)
1572 config = spa_tryimport(tryconfig);
1574 nvlist_free(tryconfig);
1579 error = put_nvlist(zc, config);
1580 nvlist_free(config);
1587 * zc_name name of the pool
1588 * zc_cookie scan func (pool_scan_func_t)
1591 zfs_ioc_pool_scan(zfs_cmd_t *zc)
1596 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1599 if (zc->zc_cookie == POOL_SCAN_NONE)
1600 error = spa_scan_stop(spa);
1602 error = spa_scan(spa, zc->zc_cookie);
1604 spa_close(spa, FTAG);
1610 zfs_ioc_pool_freeze(zfs_cmd_t *zc)
1615 error = spa_open(zc->zc_name, &spa, FTAG);
1618 spa_close(spa, FTAG);
1624 zfs_ioc_pool_upgrade(zfs_cmd_t *zc)
1629 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1632 if (zc->zc_cookie < spa_version(spa) ||
1633 !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) {
1634 spa_close(spa, FTAG);
1638 spa_upgrade(spa, zc->zc_cookie);
1639 spa_close(spa, FTAG);
1645 zfs_ioc_pool_get_history(zfs_cmd_t *zc)
1652 if ((size = zc->zc_history_len) == 0)
1655 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1658 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
1659 spa_close(spa, FTAG);
1663 hist_buf = vmem_alloc(size, KM_SLEEP);
1664 if ((error = spa_history_get(spa, &zc->zc_history_offset,
1665 &zc->zc_history_len, hist_buf)) == 0) {
1666 error = ddi_copyout(hist_buf,
1667 (void *)(uintptr_t)zc->zc_history,
1668 zc->zc_history_len, zc->zc_iflags);
1671 spa_close(spa, FTAG);
1672 vmem_free(hist_buf, size);
1677 zfs_ioc_pool_reguid(zfs_cmd_t *zc)
1682 error = spa_open(zc->zc_name, &spa, FTAG);
1684 error = spa_change_guid(spa);
1685 spa_close(spa, FTAG);
1691 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
1693 return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value));
1698 * zc_name name of filesystem
1699 * zc_obj object to find
1702 * zc_value name of object
1705 zfs_ioc_obj_to_path(zfs_cmd_t *zc)
1710 /* XXX reading from objset not owned */
1711 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1713 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1714 dmu_objset_rele(os, FTAG);
1717 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value,
1718 sizeof (zc->zc_value));
1719 dmu_objset_rele(os, FTAG);
1726 * zc_name name of filesystem
1727 * zc_obj object to find
1730 * zc_stat stats on object
1731 * zc_value path to object
1734 zfs_ioc_obj_to_stats(zfs_cmd_t *zc)
1739 /* XXX reading from objset not owned */
1740 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1742 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1743 dmu_objset_rele(os, FTAG);
1746 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value,
1747 sizeof (zc->zc_value));
1748 dmu_objset_rele(os, FTAG);
1754 zfs_ioc_vdev_add(zfs_cmd_t *zc)
1758 nvlist_t *config, **l2cache, **spares;
1759 uint_t nl2cache = 0, nspares = 0;
1761 error = spa_open(zc->zc_name, &spa, FTAG);
1765 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1766 zc->zc_iflags, &config);
1767 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
1768 &l2cache, &nl2cache);
1770 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
1774 * A root pool with concatenated devices is not supported.
1775 * Thus, can not add a device to a root pool.
1777 * Intent log device can not be added to a rootpool because
1778 * during mountroot, zil is replayed, a seperated log device
1779 * can not be accessed during the mountroot time.
1781 * l2cache and spare devices are ok to be added to a rootpool.
1783 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) {
1784 nvlist_free(config);
1785 spa_close(spa, FTAG);
1790 error = spa_vdev_add(spa, config);
1791 nvlist_free(config);
1793 spa_close(spa, FTAG);
1799 * zc_name name of the pool
1800 * zc_nvlist_conf nvlist of devices to remove
1801 * zc_cookie to stop the remove?
1804 zfs_ioc_vdev_remove(zfs_cmd_t *zc)
1809 error = spa_open(zc->zc_name, &spa, FTAG);
1812 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE);
1813 spa_close(spa, FTAG);
1818 zfs_ioc_vdev_set_state(zfs_cmd_t *zc)
1822 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
1824 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1826 switch (zc->zc_cookie) {
1827 case VDEV_STATE_ONLINE:
1828 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate);
1831 case VDEV_STATE_OFFLINE:
1832 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj);
1835 case VDEV_STATE_FAULTED:
1836 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1837 zc->zc_obj != VDEV_AUX_EXTERNAL)
1838 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1840 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj);
1843 case VDEV_STATE_DEGRADED:
1844 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1845 zc->zc_obj != VDEV_AUX_EXTERNAL)
1846 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1848 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj);
1854 zc->zc_cookie = newstate;
1855 spa_close(spa, FTAG);
1860 zfs_ioc_vdev_attach(zfs_cmd_t *zc)
1863 int replacing = zc->zc_cookie;
1867 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1870 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1871 zc->zc_iflags, &config)) == 0) {
1872 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
1873 nvlist_free(config);
1876 spa_close(spa, FTAG);
1881 zfs_ioc_vdev_detach(zfs_cmd_t *zc)
1886 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1889 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE);
1891 spa_close(spa, FTAG);
1896 zfs_ioc_vdev_split(zfs_cmd_t *zc)
1899 nvlist_t *config, *props = NULL;
1901 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT);
1903 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1906 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1907 zc->zc_iflags, &config))) {
1908 spa_close(spa, FTAG);
1912 if (zc->zc_nvlist_src_size != 0 && (error =
1913 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1914 zc->zc_iflags, &props))) {
1915 spa_close(spa, FTAG);
1916 nvlist_free(config);
1920 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp);
1922 spa_close(spa, FTAG);
1924 nvlist_free(config);
1931 zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
1934 char *path = zc->zc_value;
1935 uint64_t guid = zc->zc_guid;
1938 error = spa_open(zc->zc_name, &spa, FTAG);
1942 error = spa_vdev_setpath(spa, guid, path);
1943 spa_close(spa, FTAG);
1948 zfs_ioc_vdev_setfru(zfs_cmd_t *zc)
1951 char *fru = zc->zc_value;
1952 uint64_t guid = zc->zc_guid;
1955 error = spa_open(zc->zc_name, &spa, FTAG);
1959 error = spa_vdev_setfru(spa, guid, fru);
1960 spa_close(spa, FTAG);
1965 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os)
1970 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1972 if (zc->zc_nvlist_dst != 0 &&
1973 (error = dsl_prop_get_all(os, &nv)) == 0) {
1974 dmu_objset_stats(os, nv);
1976 * NB: zvol_get_stats() will read the objset contents,
1977 * which we aren't supposed to do with a
1978 * DS_MODE_USER hold, because it could be
1979 * inconsistent. So this is a bit of a workaround...
1980 * XXX reading with out owning
1982 if (!zc->zc_objset_stats.dds_inconsistent &&
1983 dmu_objset_type(os) == DMU_OST_ZVOL) {
1984 error = zvol_get_stats(os, nv);
1990 error = put_nvlist(zc, nv);
1999 * zc_name name of filesystem
2000 * zc_nvlist_dst_size size of buffer for property nvlist
2003 * zc_objset_stats stats
2004 * zc_nvlist_dst property nvlist
2005 * zc_nvlist_dst_size size of property nvlist
2008 zfs_ioc_objset_stats(zfs_cmd_t *zc)
2013 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
2015 error = zfs_ioc_objset_stats_impl(zc, os);
2016 dmu_objset_rele(os, FTAG);
2024 * zc_name name of filesystem
2025 * zc_nvlist_dst_size size of buffer for property nvlist
2028 * zc_nvlist_dst received property nvlist
2029 * zc_nvlist_dst_size size of received property nvlist
2031 * Gets received properties (distinct from local properties on or after
2032 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from
2033 * local property values.
2036 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc)
2042 * Without this check, we would return local property values if the
2043 * caller has not already received properties on or after
2044 * SPA_VERSION_RECVD_PROPS.
2046 if (!dsl_prop_get_hasrecvd(zc->zc_name))
2049 if (zc->zc_nvlist_dst != 0 &&
2050 (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) {
2051 error = put_nvlist(zc, nv);
2059 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop)
2065 * zfs_get_zplprop() will either find a value or give us
2066 * the default value (if there is one).
2068 if ((error = zfs_get_zplprop(os, prop, &value)) != 0)
2070 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0);
2076 * zc_name name of filesystem
2077 * zc_nvlist_dst_size size of buffer for zpl property nvlist
2080 * zc_nvlist_dst zpl property nvlist
2081 * zc_nvlist_dst_size size of zpl property nvlist
2084 zfs_ioc_objset_zplprops(zfs_cmd_t *zc)
2089 /* XXX reading without owning */
2090 if ((err = dmu_objset_hold(zc->zc_name, FTAG, &os)))
2093 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
2096 * NB: nvl_add_zplprop() will read the objset contents,
2097 * which we aren't supposed to do with a DS_MODE_USER
2098 * hold, because it could be inconsistent.
2100 if (zc->zc_nvlist_dst != 0 &&
2101 !zc->zc_objset_stats.dds_inconsistent &&
2102 dmu_objset_type(os) == DMU_OST_ZFS) {
2105 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2106 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 &&
2107 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 &&
2108 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 &&
2109 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0)
2110 err = put_nvlist(zc, nv);
2115 dmu_objset_rele(os, FTAG);
2120 dataset_name_hidden(const char *name)
2123 * Skip over datasets that are not visible in this zone,
2124 * internal datasets (which have a $ in their name), and
2125 * temporary datasets (which have a % in their name).
2127 if (strchr(name, '$') != NULL)
2129 if (strchr(name, '%') != NULL)
2131 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL))
2138 * zc_name name of filesystem
2139 * zc_cookie zap cursor
2140 * zc_nvlist_dst_size size of buffer for property nvlist
2143 * zc_name name of next filesystem
2144 * zc_cookie zap cursor
2145 * zc_objset_stats stats
2146 * zc_nvlist_dst property nvlist
2147 * zc_nvlist_dst_size size of property nvlist
2150 zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
2155 size_t orig_len = strlen(zc->zc_name);
2158 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os))) {
2159 if (error == ENOENT)
2164 p = strrchr(zc->zc_name, '/');
2165 if (p == NULL || p[1] != '\0')
2166 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
2167 p = zc->zc_name + strlen(zc->zc_name);
2170 error = dmu_dir_list_next(os,
2171 sizeof (zc->zc_name) - (p - zc->zc_name), p,
2172 NULL, &zc->zc_cookie);
2173 if (error == ENOENT)
2175 } while (error == 0 && dataset_name_hidden(zc->zc_name));
2176 dmu_objset_rele(os, FTAG);
2179 * If it's an internal dataset (ie. with a '$' in its name),
2180 * don't try to get stats for it, otherwise we'll return ENOENT.
2182 if (error == 0 && strchr(zc->zc_name, '$') == NULL) {
2183 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
2184 if (error == ENOENT) {
2185 /* We lost a race with destroy, get the next one. */
2186 zc->zc_name[orig_len] = '\0';
2195 * zc_name name of filesystem
2196 * zc_cookie zap cursor
2197 * zc_nvlist_dst_size size of buffer for property nvlist
2200 * zc_name name of next snapshot
2201 * zc_objset_stats stats
2202 * zc_nvlist_dst property nvlist
2203 * zc_nvlist_dst_size size of property nvlist
2206 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc)
2211 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
2213 return (error == ENOENT ? ESRCH : error);
2217 * A dataset name of maximum length cannot have any snapshots,
2218 * so exit immediately.
2220 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) {
2221 dmu_objset_rele(os, FTAG);
2225 error = dmu_snapshot_list_next(os,
2226 sizeof (zc->zc_name) - strlen(zc->zc_name),
2227 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie,
2230 if (error == 0 && !zc->zc_simple) {
2232 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool;
2234 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds);
2238 error = dmu_objset_from_ds(ds, &ossnap);
2240 error = zfs_ioc_objset_stats_impl(zc, ossnap);
2241 dsl_dataset_rele(ds, FTAG);
2243 } else if (error == ENOENT) {
2247 dmu_objset_rele(os, FTAG);
2248 /* if we failed, undo the @ that we tacked on to zc_name */
2250 *strchr(zc->zc_name, '@') = '\0';
2255 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair)
2257 const char *propname = nvpair_name(pair);
2259 unsigned int vallen;
2262 zfs_userquota_prop_t type;
2268 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2270 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2271 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2277 * A correctly constructed propname is encoded as
2278 * userquota@<rid>-<domain>.
2280 if ((dash = strchr(propname, '-')) == NULL ||
2281 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 ||
2290 err = zfs_sb_hold(dsname, FTAG, &zsb, B_FALSE);
2292 err = zfs_set_userquota(zsb, type, domain, rid, quota);
2293 zfs_sb_rele(zsb, FTAG);
2300 * If the named property is one that has a special function to set its value,
2301 * return 0 on success and a positive error code on failure; otherwise if it is
2302 * not one of the special properties handled by this function, return -1.
2304 * XXX: It would be better for callers of the property interface if we handled
2305 * these special cases in dsl_prop.c (in the dsl layer).
2308 zfs_prop_set_special(const char *dsname, zprop_source_t source,
2311 const char *propname = nvpair_name(pair);
2312 zfs_prop_t prop = zfs_name_to_prop(propname);
2316 if (prop == ZPROP_INVAL) {
2317 if (zfs_prop_userquota(propname))
2318 return (zfs_prop_set_userquota(dsname, pair));
2322 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2324 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2325 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2329 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING)
2332 VERIFY(0 == nvpair_value_uint64(pair, &intval));
2335 case ZFS_PROP_QUOTA:
2336 err = dsl_dir_set_quota(dsname, source, intval);
2338 case ZFS_PROP_REFQUOTA:
2339 err = dsl_dataset_set_refquota(dsname, source, intval);
2341 case ZFS_PROP_RESERVATION:
2342 err = dsl_dir_set_reservation(dsname, source, intval);
2344 case ZFS_PROP_REFRESERVATION:
2345 err = dsl_dataset_set_refreservation(dsname, source, intval);
2347 case ZFS_PROP_VOLSIZE:
2348 err = zvol_set_volsize(dsname, intval);
2350 case ZFS_PROP_SNAPDEV:
2351 err = zvol_set_snapdev(dsname, intval);
2353 case ZFS_PROP_VERSION:
2357 if ((err = zfs_sb_hold(dsname, FTAG, &zsb, B_TRUE)) != 0)
2360 err = zfs_set_version(zsb, intval);
2361 zfs_sb_rele(zsb, FTAG);
2363 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) {
2366 zc = kmem_zalloc(sizeof (zfs_cmd_t),
2367 KM_SLEEP | KM_NODEBUG);
2368 (void) strcpy(zc->zc_name, dsname);
2369 (void) zfs_ioc_userspace_upgrade(zc);
2370 kmem_free(zc, sizeof (zfs_cmd_t));
2374 case ZFS_PROP_COMPRESSION:
2376 if (intval == ZIO_COMPRESS_LZ4) {
2377 zfeature_info_t *feature =
2378 &spa_feature_table[SPA_FEATURE_LZ4_COMPRESS];
2381 if ((err = spa_open(dsname, &spa, FTAG)) != 0)
2385 * Setting the LZ4 compression algorithm activates
2388 if (!spa_feature_is_active(spa, feature)) {
2389 if ((err = zfs_prop_activate_feature(spa,
2391 spa_close(spa, FTAG);
2396 spa_close(spa, FTAG);
2399 * We still want the default set action to be performed in the
2400 * caller, we only performed zfeature settings here.
2414 * This function is best effort. If it fails to set any of the given properties,
2415 * it continues to set as many as it can and returns the last error
2416 * encountered. If the caller provides a non-NULL errlist, it will be filled in
2417 * with the list of names of all the properties that failed along with the
2418 * corresponding error numbers.
2420 * If every property is set successfully, zero is returned and errlist is not
2424 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl,
2433 nvlist_t *genericnvl = fnvlist_alloc();
2434 nvlist_t *retrynvl = fnvlist_alloc();
2437 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2438 const char *propname = nvpair_name(pair);
2439 zfs_prop_t prop = zfs_name_to_prop(propname);
2442 /* decode the property value */
2444 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2446 attrs = fnvpair_value_nvlist(pair);
2447 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2452 /* Validate value type */
2453 if (err == 0 && prop == ZPROP_INVAL) {
2454 if (zfs_prop_user(propname)) {
2455 if (nvpair_type(propval) != DATA_TYPE_STRING)
2457 } else if (zfs_prop_userquota(propname)) {
2458 if (nvpair_type(propval) !=
2459 DATA_TYPE_UINT64_ARRAY)
2464 } else if (err == 0) {
2465 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2466 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING)
2468 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) {
2471 intval = fnvpair_value_uint64(propval);
2473 switch (zfs_prop_get_type(prop)) {
2474 case PROP_TYPE_NUMBER:
2476 case PROP_TYPE_STRING:
2479 case PROP_TYPE_INDEX:
2480 if (zfs_prop_index_to_string(prop,
2481 intval, &unused) != 0)
2486 "unknown property type");
2493 /* Validate permissions */
2495 err = zfs_check_settable(dsname, pair, CRED());
2498 err = zfs_prop_set_special(dsname, source, pair);
2501 * For better performance we build up a list of
2502 * properties to set in a single transaction.
2504 err = nvlist_add_nvpair(genericnvl, pair);
2505 } else if (err != 0 && nvl != retrynvl) {
2507 * This may be a spurious error caused by
2508 * receiving quota and reservation out of order.
2509 * Try again in a second pass.
2511 err = nvlist_add_nvpair(retrynvl, pair);
2516 if (errlist != NULL)
2517 fnvlist_add_int32(errlist, propname, err);
2522 if (nvl != retrynvl && !nvlist_empty(retrynvl)) {
2527 if (!nvlist_empty(genericnvl) &&
2528 dsl_props_set(dsname, source, genericnvl) != 0) {
2530 * If this fails, we still want to set as many properties as we
2531 * can, so try setting them individually.
2534 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) {
2535 const char *propname = nvpair_name(pair);
2539 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2541 attrs = fnvpair_value_nvlist(pair);
2542 propval = fnvlist_lookup_nvpair(attrs,
2546 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2547 strval = fnvpair_value_string(propval);
2548 err = dsl_prop_set_string(dsname, propname,
2551 intval = fnvpair_value_uint64(propval);
2552 err = dsl_prop_set_int(dsname, propname, source,
2557 if (errlist != NULL) {
2558 fnvlist_add_int32(errlist, propname,
2565 nvlist_free(genericnvl);
2566 nvlist_free(retrynvl);
2572 * Check that all the properties are valid user properties.
2575 zfs_check_userprops(const char *fsname, nvlist_t *nvl)
2577 nvpair_t *pair = NULL;
2580 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2581 const char *propname = nvpair_name(pair);
2584 if (!zfs_prop_user(propname) ||
2585 nvpair_type(pair) != DATA_TYPE_STRING)
2588 if ((error = zfs_secpolicy_write_perms(fsname,
2589 ZFS_DELEG_PERM_USERPROP, CRED())))
2592 if (strlen(propname) >= ZAP_MAXNAMELEN)
2593 return (ENAMETOOLONG);
2595 VERIFY(nvpair_value_string(pair, &valstr) == 0);
2596 if (strlen(valstr) >= ZAP_MAXVALUELEN)
2603 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops)
2607 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2610 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) {
2611 if (nvlist_exists(skipped, nvpair_name(pair)))
2614 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0);
2619 clear_received_props(const char *dsname, nvlist_t *props,
2623 nvlist_t *cleared_props = NULL;
2624 props_skip(props, skipped, &cleared_props);
2625 if (!nvlist_empty(cleared_props)) {
2627 * Acts on local properties until the dataset has received
2628 * properties at least once on or after SPA_VERSION_RECVD_PROPS.
2630 zprop_source_t flags = (ZPROP_SRC_NONE |
2631 (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0));
2632 err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL);
2634 nvlist_free(cleared_props);
2640 * zc_name name of filesystem
2641 * zc_value name of property to set
2642 * zc_nvlist_src{_size} nvlist of properties to apply
2643 * zc_cookie received properties flag
2646 * zc_nvlist_dst{_size} error for each unapplied received property
2649 zfs_ioc_set_prop(zfs_cmd_t *zc)
2652 boolean_t received = zc->zc_cookie;
2653 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED :
2658 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2659 zc->zc_iflags, &nvl)) != 0)
2663 nvlist_t *origprops;
2665 if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) {
2666 (void) clear_received_props(zc->zc_name,
2668 nvlist_free(origprops);
2671 error = dsl_prop_set_hasrecvd(zc->zc_name);
2674 errors = fnvlist_alloc();
2676 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors);
2678 if (zc->zc_nvlist_dst != 0 && errors != NULL) {
2679 (void) put_nvlist(zc, errors);
2682 nvlist_free(errors);
2689 * zc_name name of filesystem
2690 * zc_value name of property to inherit
2691 * zc_cookie revert to received value if TRUE
2696 zfs_ioc_inherit_prop(zfs_cmd_t *zc)
2698 const char *propname = zc->zc_value;
2699 zfs_prop_t prop = zfs_name_to_prop(propname);
2700 boolean_t received = zc->zc_cookie;
2701 zprop_source_t source = (received
2702 ? ZPROP_SRC_NONE /* revert to received value, if any */
2703 : ZPROP_SRC_INHERITED); /* explicitly inherit */
2712 * zfs_prop_set_special() expects properties in the form of an
2713 * nvpair with type info.
2715 if (prop == ZPROP_INVAL) {
2716 if (!zfs_prop_user(propname))
2719 type = PROP_TYPE_STRING;
2720 } else if (prop == ZFS_PROP_VOLSIZE ||
2721 prop == ZFS_PROP_VERSION) {
2724 type = zfs_prop_get_type(prop);
2727 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2730 case PROP_TYPE_STRING:
2731 VERIFY(0 == nvlist_add_string(dummy, propname, ""));
2733 case PROP_TYPE_NUMBER:
2734 case PROP_TYPE_INDEX:
2735 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0));
2742 pair = nvlist_next_nvpair(dummy, NULL);
2743 err = zfs_prop_set_special(zc->zc_name, source, pair);
2746 return (err); /* special property already handled */
2749 * Only check this in the non-received case. We want to allow
2750 * 'inherit -S' to revert non-inheritable properties like quota
2751 * and reservation to the received or default values even though
2752 * they are not considered inheritable.
2754 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop))
2758 /* property name has been validated by zfs_secpolicy_inherit_prop() */
2759 return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source));
2763 zfs_ioc_pool_set_props(zfs_cmd_t *zc)
2770 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2771 zc->zc_iflags, &props)))
2775 * If the only property is the configfile, then just do a spa_lookup()
2776 * to handle the faulted case.
2778 pair = nvlist_next_nvpair(props, NULL);
2779 if (pair != NULL && strcmp(nvpair_name(pair),
2780 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 &&
2781 nvlist_next_nvpair(props, pair) == NULL) {
2782 mutex_enter(&spa_namespace_lock);
2783 if ((spa = spa_lookup(zc->zc_name)) != NULL) {
2784 spa_configfile_set(spa, props, B_FALSE);
2785 spa_config_sync(spa, B_FALSE, B_TRUE);
2787 mutex_exit(&spa_namespace_lock);
2794 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2799 error = spa_prop_set(spa, props);
2802 spa_close(spa, FTAG);
2808 zfs_ioc_pool_get_props(zfs_cmd_t *zc)
2812 nvlist_t *nvp = NULL;
2814 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2816 * If the pool is faulted, there may be properties we can still
2817 * get (such as altroot and cachefile), so attempt to get them
2820 mutex_enter(&spa_namespace_lock);
2821 if ((spa = spa_lookup(zc->zc_name)) != NULL)
2822 error = spa_prop_get(spa, &nvp);
2823 mutex_exit(&spa_namespace_lock);
2825 error = spa_prop_get(spa, &nvp);
2826 spa_close(spa, FTAG);
2829 if (error == 0 && zc->zc_nvlist_dst != 0)
2830 error = put_nvlist(zc, nvp);
2840 * zc_name name of volume
2845 zfs_ioc_create_minor(zfs_cmd_t *zc)
2847 return (zvol_create_minor(zc->zc_name));
2852 * zc_name name of volume
2857 zfs_ioc_remove_minor(zfs_cmd_t *zc)
2859 return (zvol_remove_minor(zc->zc_name));
2864 * zc_name name of filesystem
2865 * zc_nvlist_src{_size} nvlist of delegated permissions
2866 * zc_perm_action allow/unallow flag
2871 zfs_ioc_set_fsacl(zfs_cmd_t *zc)
2874 nvlist_t *fsaclnv = NULL;
2876 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2877 zc->zc_iflags, &fsaclnv)) != 0)
2881 * Verify nvlist is constructed correctly
2883 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
2884 nvlist_free(fsaclnv);
2889 * If we don't have PRIV_SYS_MOUNT, then validate
2890 * that user is allowed to hand out each permission in
2894 error = secpolicy_zfs(CRED());
2896 if (zc->zc_perm_action == B_FALSE) {
2897 error = dsl_deleg_can_allow(zc->zc_name,
2900 error = dsl_deleg_can_unallow(zc->zc_name,
2906 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action);
2908 nvlist_free(fsaclnv);
2914 * zc_name name of filesystem
2917 * zc_nvlist_src{_size} nvlist of delegated permissions
2920 zfs_ioc_get_fsacl(zfs_cmd_t *zc)
2925 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) {
2926 error = put_nvlist(zc, nvp);
2935 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
2937 zfs_creat_t *zct = arg;
2939 zfs_create_fs(os, cr, zct->zct_zplprops, tx);
2942 #define ZFS_PROP_UNDEFINED ((uint64_t)-1)
2946 * createprops list of properties requested by creator
2947 * default_zplver zpl version to use if unspecified in createprops
2948 * fuids_ok fuids allowed in this version of the spa?
2949 * os parent objset pointer (NULL if root fs)
2952 * zplprops values for the zplprops we attach to the master node object
2953 * is_ci true if requested file system will be purely case-insensitive
2955 * Determine the settings for utf8only, normalization and
2956 * casesensitivity. Specific values may have been requested by the
2957 * creator and/or we can inherit values from the parent dataset. If
2958 * the file system is of too early a vintage, a creator can not
2959 * request settings for these properties, even if the requested
2960 * setting is the default value. We don't actually want to create dsl
2961 * properties for these, so remove them from the source nvlist after
2965 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver,
2966 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops,
2967 nvlist_t *zplprops, boolean_t *is_ci)
2969 uint64_t sense = ZFS_PROP_UNDEFINED;
2970 uint64_t norm = ZFS_PROP_UNDEFINED;
2971 uint64_t u8 = ZFS_PROP_UNDEFINED;
2974 ASSERT(zplprops != NULL);
2977 * Pull out creator prop choices, if any.
2980 (void) nvlist_lookup_uint64(createprops,
2981 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver);
2982 (void) nvlist_lookup_uint64(createprops,
2983 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm);
2984 (void) nvlist_remove_all(createprops,
2985 zfs_prop_to_name(ZFS_PROP_NORMALIZE));
2986 (void) nvlist_lookup_uint64(createprops,
2987 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8);
2988 (void) nvlist_remove_all(createprops,
2989 zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
2990 (void) nvlist_lookup_uint64(createprops,
2991 zfs_prop_to_name(ZFS_PROP_CASE), &sense);
2992 (void) nvlist_remove_all(createprops,
2993 zfs_prop_to_name(ZFS_PROP_CASE));
2997 * If the zpl version requested is whacky or the file system
2998 * or pool is version is too "young" to support normalization
2999 * and the creator tried to set a value for one of the props,
3002 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) ||
3003 (zplver >= ZPL_VERSION_FUID && !fuids_ok) ||
3004 (zplver >= ZPL_VERSION_SA && !sa_ok) ||
3005 (zplver < ZPL_VERSION_NORMALIZATION &&
3006 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
3007 sense != ZFS_PROP_UNDEFINED)))
3011 * Put the version in the zplprops
3013 VERIFY(nvlist_add_uint64(zplprops,
3014 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
3016 if (norm == ZFS_PROP_UNDEFINED &&
3017 (error = zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm)) != 0)
3019 VERIFY(nvlist_add_uint64(zplprops,
3020 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
3023 * If we're normalizing, names must always be valid UTF-8 strings.
3027 if (u8 == ZFS_PROP_UNDEFINED &&
3028 (error = zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8)) != 0)
3030 VERIFY(nvlist_add_uint64(zplprops,
3031 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
3033 if (sense == ZFS_PROP_UNDEFINED &&
3034 (error = zfs_get_zplprop(os, ZFS_PROP_CASE, &sense)) != 0)
3036 VERIFY(nvlist_add_uint64(zplprops,
3037 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
3040 *is_ci = (sense == ZFS_CASE_INSENSITIVE);
3046 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
3047 nvlist_t *zplprops, boolean_t *is_ci)
3049 boolean_t fuids_ok, sa_ok;
3050 uint64_t zplver = ZPL_VERSION;
3051 objset_t *os = NULL;
3052 char parentname[MAXNAMELEN];
3058 (void) strlcpy(parentname, dataset, sizeof (parentname));
3059 cp = strrchr(parentname, '/');
3063 if ((error = spa_open(dataset, &spa, FTAG)) != 0)
3066 spa_vers = spa_version(spa);
3067 spa_close(spa, FTAG);
3069 zplver = zfs_zpl_version_map(spa_vers);
3070 fuids_ok = (zplver >= ZPL_VERSION_FUID);
3071 sa_ok = (zplver >= ZPL_VERSION_SA);
3074 * Open parent object set so we can inherit zplprop values.
3076 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0)
3079 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops,
3081 dmu_objset_rele(os, FTAG);
3086 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops,
3087 nvlist_t *zplprops, boolean_t *is_ci)
3091 uint64_t zplver = ZPL_VERSION;
3094 zplver = zfs_zpl_version_map(spa_vers);
3095 fuids_ok = (zplver >= ZPL_VERSION_FUID);
3096 sa_ok = (zplver >= ZPL_VERSION_SA);
3098 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok,
3099 createprops, zplprops, is_ci);
3105 * "type" -> dmu_objset_type_t (int32)
3106 * (optional) "props" -> { prop -> value }
3109 * outnvl: propname -> error code (int32)
3112 zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3115 zfs_creat_t zct = { 0 };
3116 nvlist_t *nvprops = NULL;
3117 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
3119 dmu_objset_type_t type;
3120 boolean_t is_insensitive = B_FALSE;
3122 if (nvlist_lookup_int32(innvl, "type", &type32) != 0)
3125 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops);
3129 cbfunc = zfs_create_cb;
3133 cbfunc = zvol_create_cb;
3140 if (strchr(fsname, '@') ||
3141 strchr(fsname, '%'))
3144 zct.zct_props = nvprops;
3149 if (type == DMU_OST_ZVOL) {
3150 uint64_t volsize, volblocksize;
3152 if (nvprops == NULL)
3154 if (nvlist_lookup_uint64(nvprops,
3155 zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0)
3158 if ((error = nvlist_lookup_uint64(nvprops,
3159 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
3160 &volblocksize)) != 0 && error != ENOENT)
3164 volblocksize = zfs_prop_default_numeric(
3165 ZFS_PROP_VOLBLOCKSIZE);
3167 if ((error = zvol_check_volblocksize(
3168 volblocksize)) != 0 ||
3169 (error = zvol_check_volsize(volsize,
3170 volblocksize)) != 0)
3172 } else if (type == DMU_OST_ZFS) {
3176 * We have to have normalization and
3177 * case-folding flags correct when we do the
3178 * file system creation, so go figure them out
3181 VERIFY(nvlist_alloc(&zct.zct_zplprops,
3182 NV_UNIQUE_NAME, KM_SLEEP) == 0);
3183 error = zfs_fill_zplprops(fsname, nvprops,
3184 zct.zct_zplprops, &is_insensitive);
3186 nvlist_free(zct.zct_zplprops);
3191 error = dmu_objset_create(fsname, type,
3192 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
3193 nvlist_free(zct.zct_zplprops);
3196 * It would be nice to do this atomically.
3199 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL,
3202 (void) dsl_destroy_head(fsname);
3209 * "origin" -> name of origin snapshot
3210 * (optional) "props" -> { prop -> value }
3214 * outnvl: propname -> error code (int32)
3217 zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
3220 nvlist_t *nvprops = NULL;
3223 if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0)
3225 (void) nvlist_lookup_nvlist(innvl, "props", &nvprops);
3227 if (strchr(fsname, '@') ||
3228 strchr(fsname, '%'))
3231 if (dataset_namecheck(origin_name, NULL, NULL) != 0)
3233 error = dmu_objset_clone(fsname, origin_name);
3238 * It would be nice to do this atomically.
3241 error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL,
3244 (void) dsl_destroy_head(fsname);
3251 * "snaps" -> { snapshot1, snapshot2 }
3252 * (optional) "props" -> { prop -> value (string) }
3255 * outnvl: snapshot -> error code (int32)
3258 zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3261 nvlist_t *props = NULL;
3263 nvpair_t *pair, *pair2;
3265 (void) nvlist_lookup_nvlist(innvl, "props", &props);
3266 if ((error = zfs_check_userprops(poolname, props)) != 0)
3269 if (!nvlist_empty(props) &&
3270 zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS))
3273 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
3275 poollen = strlen(poolname);
3276 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
3277 pair = nvlist_next_nvpair(snaps, pair)) {
3278 const char *name = nvpair_name(pair);
3279 const char *cp = strchr(name, '@');
3282 * The snap name must contain an @, and the part after it must
3283 * contain only valid characters.
3285 if (cp == NULL || snapshot_namecheck(cp + 1, NULL, NULL) != 0)
3289 * The snap must be in the specified pool.
3291 if (strncmp(name, poolname, poollen) != 0 ||
3292 (name[poollen] != '/' && name[poollen] != '@'))
3295 /* This must be the only snap of this fs. */
3296 for (pair2 = nvlist_next_nvpair(snaps, pair);
3297 pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) {
3298 if (strncmp(name, nvpair_name(pair2), cp - name + 1)
3305 error = dsl_dataset_snapshot(snaps, props, outnvl);
3310 * innvl: "message" -> string
3314 zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl)
3322 * The poolname in the ioctl is not set, we get it from the TSD,
3323 * which was set at the end of the last successful ioctl that allows
3324 * logging. The secpolicy func already checked that it is set.
3325 * Only one log ioctl is allowed after each successful ioctl, so
3326 * we clear the TSD here.
3328 poolname = tsd_get(zfs_allow_log_key);
3329 (void) tsd_set(zfs_allow_log_key, NULL);
3330 error = spa_open(poolname, &spa, FTAG);
3335 if (nvlist_lookup_string(innvl, "message", &message) != 0) {
3336 spa_close(spa, FTAG);
3340 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
3341 spa_close(spa, FTAG);
3345 error = spa_history_log(spa, message);
3346 spa_close(spa, FTAG);
3351 * The dp_config_rwlock must not be held when calling this, because the
3352 * unmount may need to write out data.
3354 * This function is best-effort. Callers must deal gracefully if it
3355 * remains mounted (or is remounted after this call).
3358 zfs_unmount_snap(const char *snapname)
3360 zfs_sb_t *zsb = NULL;
3365 if ((ptr = strchr(snapname, '@')) == NULL)
3368 dsname = kmem_alloc(ptr - snapname + 1, KM_SLEEP);
3369 strlcpy(dsname, snapname, ptr - snapname + 1);
3370 fullname = strdup(snapname);
3372 if (zfs_sb_hold(dsname, FTAG, &zsb, B_FALSE) == 0) {
3373 ASSERT(!dsl_pool_config_held(dmu_objset_pool(zsb->z_os)));
3374 (void) zfsctl_unmount_snapshot(zsb, fullname, MNT_FORCE);
3375 zfs_sb_rele(zsb, FTAG);
3378 kmem_free(dsname, ptr - snapname + 1);
3386 zfs_unmount_snap_cb(const char *snapname, void *arg)
3388 zfs_unmount_snap(snapname);
3393 * When a clone is destroyed, its origin may also need to be destroyed,
3394 * in which case it must be unmounted. This routine will do that unmount
3398 zfs_destroy_unmount_origin(const char *fsname)
3404 error = dmu_objset_hold(fsname, FTAG, &os);
3407 ds = dmu_objset_ds(os);
3408 if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) {
3409 char originname[MAXNAMELEN];
3410 dsl_dataset_name(ds->ds_prev, originname);
3411 dmu_objset_rele(os, FTAG);
3412 zfs_unmount_snap(originname);
3414 dmu_objset_rele(os, FTAG);
3420 * "snaps" -> { snapshot1, snapshot2 }
3421 * (optional boolean) "defer"
3424 * outnvl: snapshot -> error code (int32)
3427 zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
3434 if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
3436 defer = nvlist_exists(innvl, "defer");
3438 poollen = strlen(poolname);
3439 for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
3440 pair = nvlist_next_nvpair(snaps, pair)) {
3441 const char *name = nvpair_name(pair);
3444 * The snap must be in the specified pool.
3446 if (strncmp(name, poolname, poollen) != 0 ||
3447 (name[poollen] != '/' && name[poollen] != '@'))
3450 zfs_unmount_snap(name);
3451 (void) zvol_remove_minor(name);
3454 return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl));
3459 * zc_name name of dataset to destroy
3460 * zc_objset_type type of objset
3461 * zc_defer_destroy mark for deferred destroy
3466 zfs_ioc_destroy(zfs_cmd_t *zc)
3469 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS)
3470 zfs_unmount_snap(zc->zc_name);
3472 if (strchr(zc->zc_name, '@'))
3473 err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy);
3475 err = dsl_destroy_head(zc->zc_name);
3476 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0)
3477 (void) zvol_remove_minor(zc->zc_name);
3483 * zc_name name of dataset to rollback (to most recent snapshot)
3488 zfs_ioc_rollback(zfs_cmd_t *zc)
3493 if (get_zfs_sb(zc->zc_name, &zsb) == 0) {
3494 error = zfs_suspend_fs(zsb);
3498 error = dsl_dataset_rollback(zc->zc_name);
3499 resume_err = zfs_resume_fs(zsb, zc->zc_name);
3500 error = error ? error : resume_err;
3502 deactivate_super(zsb->z_sb);
3504 error = dsl_dataset_rollback(zc->zc_name);
3510 recursive_unmount(const char *fsname, void *arg)
3512 const char *snapname = arg;
3515 fullname = kmem_asprintf("%s@%s", fsname, snapname);
3516 zfs_unmount_snap(fullname);
3523 * zc_name old name of dataset
3524 * zc_value new name of dataset
3525 * zc_cookie recursive flag (only valid for snapshots)
3530 zfs_ioc_rename(zfs_cmd_t *zc)
3532 boolean_t recursive = zc->zc_cookie & 1;
3536 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
3537 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3538 strchr(zc->zc_value, '%'))
3541 at = strchr(zc->zc_name, '@');
3543 /* snaps must be in same fs */
3544 if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1))
3547 if (zc->zc_objset_type == DMU_OST_ZFS) {
3548 int error = dmu_objset_find(zc->zc_name,
3549 recursive_unmount, at + 1,
3550 recursive ? DS_FIND_CHILDREN : 0);
3554 return (dsl_dataset_rename_snapshot(zc->zc_name,
3555 at + 1, strchr(zc->zc_value, '@') + 1, recursive));
3557 err = dsl_dir_rename(zc->zc_name, zc->zc_value);
3558 if (!err && zc->zc_objset_type == DMU_OST_ZVOL) {
3559 (void) zvol_remove_minor(zc->zc_name);
3560 (void) zvol_create_minor(zc->zc_value);
3567 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr)
3569 const char *propname = nvpair_name(pair);
3570 boolean_t issnap = (strchr(dsname, '@') != NULL);
3571 zfs_prop_t prop = zfs_name_to_prop(propname);
3575 if (prop == ZPROP_INVAL) {
3576 if (zfs_prop_user(propname)) {
3577 if ((err = zfs_secpolicy_write_perms(dsname,
3578 ZFS_DELEG_PERM_USERPROP, cr)))
3583 if (!issnap && zfs_prop_userquota(propname)) {
3584 const char *perm = NULL;
3585 const char *uq_prefix =
3586 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA];
3587 const char *gq_prefix =
3588 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA];
3590 if (strncmp(propname, uq_prefix,
3591 strlen(uq_prefix)) == 0) {
3592 perm = ZFS_DELEG_PERM_USERQUOTA;
3593 } else if (strncmp(propname, gq_prefix,
3594 strlen(gq_prefix)) == 0) {
3595 perm = ZFS_DELEG_PERM_GROUPQUOTA;
3597 /* USERUSED and GROUPUSED are read-only */
3601 if ((err = zfs_secpolicy_write_perms(dsname, perm, cr)))
3612 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
3614 * dsl_prop_get_all_impl() returns properties in this
3618 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
3619 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3624 * Check that this value is valid for this pool version
3627 case ZFS_PROP_COMPRESSION:
3629 * If the user specified gzip compression, make sure
3630 * the SPA supports it. We ignore any errors here since
3631 * we'll catch them later.
3633 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3634 nvpair_value_uint64(pair, &intval) == 0) {
3635 if (intval >= ZIO_COMPRESS_GZIP_1 &&
3636 intval <= ZIO_COMPRESS_GZIP_9 &&
3637 zfs_earlier_version(dsname,
3638 SPA_VERSION_GZIP_COMPRESSION)) {
3642 if (intval == ZIO_COMPRESS_ZLE &&
3643 zfs_earlier_version(dsname,
3644 SPA_VERSION_ZLE_COMPRESSION))
3647 if (intval == ZIO_COMPRESS_LZ4) {
3648 zfeature_info_t *feature =
3650 SPA_FEATURE_LZ4_COMPRESS];
3653 if ((err = spa_open(dsname, &spa, FTAG)) != 0)
3656 if (!spa_feature_is_enabled(spa, feature)) {
3657 spa_close(spa, FTAG);
3660 spa_close(spa, FTAG);
3664 * If this is a bootable dataset then
3665 * verify that the compression algorithm
3666 * is supported for booting. We must return
3667 * something other than ENOTSUP since it
3668 * implies a downrev pool version.
3670 if (zfs_is_bootfs(dsname) &&
3671 !BOOTFS_COMPRESS_VALID(intval)) {
3677 case ZFS_PROP_COPIES:
3678 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS))
3682 case ZFS_PROP_DEDUP:
3683 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP))
3687 case ZFS_PROP_SHARESMB:
3688 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID))
3692 case ZFS_PROP_ACLINHERIT:
3693 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3694 nvpair_value_uint64(pair, &intval) == 0) {
3695 if (intval == ZFS_ACL_PASSTHROUGH_X &&
3696 zfs_earlier_version(dsname,
3697 SPA_VERSION_PASSTHROUGH_X))
3705 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED()));
3709 * Checks for a race condition to make sure we don't increment a feature flag
3713 zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx)
3715 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
3716 zfeature_info_t *feature = arg;
3718 if (!spa_feature_is_active(spa, feature))
3725 * The callback invoked on feature activation in the sync task caused by
3726 * zfs_prop_activate_feature.
3729 zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx)
3731 spa_t *spa = dmu_tx_pool(tx)->dp_spa;
3732 zfeature_info_t *feature = arg;
3734 spa_feature_incr(spa, feature, tx);
3738 * Activates a feature on a pool in response to a property setting. This
3739 * creates a new sync task which modifies the pool to reflect the feature
3743 zfs_prop_activate_feature(spa_t *spa, zfeature_info_t *feature)
3747 /* EBUSY here indicates that the feature is already active */
3748 err = dsl_sync_task(spa_name(spa),
3749 zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync,
3752 if (err != 0 && err != EBUSY)
3759 * Removes properties from the given props list that fail permission checks
3760 * needed to clear them and to restore them in case of a receive error. For each
3761 * property, make sure we have both set and inherit permissions.
3763 * Returns the first error encountered if any permission checks fail. If the
3764 * caller provides a non-NULL errlist, it also gives the complete list of names
3765 * of all the properties that failed a permission check along with the
3766 * corresponding error numbers. The caller is responsible for freeing the
3769 * If every property checks out successfully, zero is returned and the list
3770 * pointed at by errlist is NULL.
3773 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist)
3776 nvpair_t *pair, *next_pair;
3783 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
3785 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
3786 (void) strcpy(zc->zc_name, dataset);
3787 pair = nvlist_next_nvpair(props, NULL);
3788 while (pair != NULL) {
3789 next_pair = nvlist_next_nvpair(props, pair);
3791 (void) strcpy(zc->zc_value, nvpair_name(pair));
3792 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 ||
3793 (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) {
3794 VERIFY(nvlist_remove_nvpair(props, pair) == 0);
3795 VERIFY(nvlist_add_int32(errors,
3796 zc->zc_value, err) == 0);
3800 kmem_free(zc, sizeof (zfs_cmd_t));
3802 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
3803 nvlist_free(errors);
3806 VERIFY(nvpair_value_int32(pair, &rv) == 0);
3809 if (errlist == NULL)
3810 nvlist_free(errors);
3818 propval_equals(nvpair_t *p1, nvpair_t *p2)
3820 if (nvpair_type(p1) == DATA_TYPE_NVLIST) {
3821 /* dsl_prop_get_all_impl() format */
3823 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0);
3824 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3828 if (nvpair_type(p2) == DATA_TYPE_NVLIST) {
3830 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0);
3831 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3835 if (nvpair_type(p1) != nvpair_type(p2))
3838 if (nvpair_type(p1) == DATA_TYPE_STRING) {
3839 char *valstr1, *valstr2;
3841 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0);
3842 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0);
3843 return (strcmp(valstr1, valstr2) == 0);
3845 uint64_t intval1, intval2;
3847 VERIFY(nvpair_value_uint64(p1, &intval1) == 0);
3848 VERIFY(nvpair_value_uint64(p2, &intval2) == 0);
3849 return (intval1 == intval2);
3854 * Remove properties from props if they are not going to change (as determined
3855 * by comparison with origprops). Remove them from origprops as well, since we
3856 * do not need to clear or restore properties that won't change.
3859 props_reduce(nvlist_t *props, nvlist_t *origprops)
3861 nvpair_t *pair, *next_pair;
3863 if (origprops == NULL)
3864 return; /* all props need to be received */
3866 pair = nvlist_next_nvpair(props, NULL);
3867 while (pair != NULL) {
3868 const char *propname = nvpair_name(pair);
3871 next_pair = nvlist_next_nvpair(props, pair);
3873 if ((nvlist_lookup_nvpair(origprops, propname,
3874 &match) != 0) || !propval_equals(pair, match))
3875 goto next; /* need to set received value */
3877 /* don't clear the existing received value */
3878 (void) nvlist_remove_nvpair(origprops, match);
3879 /* don't bother receiving the property */
3880 (void) nvlist_remove_nvpair(props, pair);
3887 static boolean_t zfs_ioc_recv_inject_err;
3892 * zc_name name of containing filesystem
3893 * zc_nvlist_src{_size} nvlist of properties to apply
3894 * zc_value name of snapshot to create
3895 * zc_string name of clone origin (if DRR_FLAG_CLONE)
3896 * zc_cookie file descriptor to recv from
3897 * zc_begin_record the BEGIN record of the stream (not byteswapped)
3898 * zc_guid force flag
3899 * zc_cleanup_fd cleanup-on-exit file descriptor
3900 * zc_action_handle handle for this guid/ds mapping (or zero on first call)
3903 * zc_cookie number of bytes read
3904 * zc_nvlist_dst{_size} error for each unapplied received property
3905 * zc_obj zprop_errflags_t
3906 * zc_action_handle handle for this guid/ds mapping
3909 zfs_ioc_recv(zfs_cmd_t *zc)
3912 dmu_recv_cookie_t drc;
3913 boolean_t force = (boolean_t)zc->zc_guid;
3916 int props_error = 0;
3919 nvlist_t *props = NULL; /* sent properties */
3920 nvlist_t *origprops = NULL; /* existing properties */
3921 char *origin = NULL;
3923 char tofs[ZFS_MAXNAMELEN];
3924 boolean_t first_recvd_props = B_FALSE;
3926 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3927 strchr(zc->zc_value, '@') == NULL ||
3928 strchr(zc->zc_value, '%'))
3931 (void) strcpy(tofs, zc->zc_value);
3932 tosnap = strchr(tofs, '@');
3935 if (zc->zc_nvlist_src != 0 &&
3936 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
3937 zc->zc_iflags, &props)) != 0)
3947 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
3949 if (zc->zc_string[0])
3950 origin = zc->zc_string;
3952 error = dmu_recv_begin(tofs, tosnap,
3953 &zc->zc_begin_record, force, origin, &drc);
3958 * Set properties before we receive the stream so that they are applied
3959 * to the new data. Note that we must call dmu_recv_stream() if
3960 * dmu_recv_begin() succeeds.
3962 if (props != NULL && !drc.drc_newfs) {
3963 if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >=
3964 SPA_VERSION_RECVD_PROPS &&
3965 !dsl_prop_get_hasrecvd(tofs))
3966 first_recvd_props = B_TRUE;
3969 * If new received properties are supplied, they are to
3970 * completely replace the existing received properties, so stash
3971 * away the existing ones.
3973 if (dsl_prop_get_received(tofs, &origprops) == 0) {
3974 nvlist_t *errlist = NULL;
3976 * Don't bother writing a property if its value won't
3977 * change (and avoid the unnecessary security checks).
3979 * The first receive after SPA_VERSION_RECVD_PROPS is a
3980 * special case where we blow away all local properties
3983 if (!first_recvd_props)
3984 props_reduce(props, origprops);
3985 if (zfs_check_clearable(tofs, origprops, &errlist) != 0)
3986 (void) nvlist_merge(errors, errlist, 0);
3987 nvlist_free(errlist);
3989 if (clear_received_props(tofs, origprops,
3990 first_recvd_props ? NULL : props) != 0)
3991 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3993 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3997 if (props != NULL) {
3998 props_error = dsl_prop_set_hasrecvd(tofs);
4000 if (props_error == 0) {
4001 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
4006 if (zc->zc_nvlist_dst_size != 0 &&
4007 (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 ||
4008 put_nvlist(zc, errors) != 0)) {
4010 * Caller made zc->zc_nvlist_dst less than the minimum expected
4011 * size or supplied an invalid address.
4013 props_error = EINVAL;
4017 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd,
4018 &zc->zc_action_handle);
4021 zfs_sb_t *zsb = NULL;
4023 if (get_zfs_sb(tofs, &zsb) == 0) {
4027 error = zfs_suspend_fs(zsb);
4029 * If the suspend fails, then the recv_end will
4030 * likely also fail, and clean up after itself.
4032 end_err = dmu_recv_end(&drc);
4034 error = zfs_resume_fs(zsb, tofs);
4035 error = error ? error : end_err;
4036 deactivate_super(zsb->z_sb);
4038 error = dmu_recv_end(&drc);
4042 zc->zc_cookie = off - fp->f_offset;
4043 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4047 if (zfs_ioc_recv_inject_err) {
4048 zfs_ioc_recv_inject_err = B_FALSE;
4053 * On error, restore the original props.
4055 if (error != 0 && props != NULL && !drc.drc_newfs) {
4056 if (clear_received_props(tofs, props, NULL) != 0) {
4058 * We failed to clear the received properties.
4059 * Since we may have left a $recvd value on the
4060 * system, we can't clear the $hasrecvd flag.
4062 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4063 } else if (first_recvd_props) {
4064 dsl_prop_unset_hasrecvd(tofs);
4067 if (origprops == NULL && !drc.drc_newfs) {
4068 /* We failed to stash the original properties. */
4069 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4073 * dsl_props_set() will not convert RECEIVED to LOCAL on or
4074 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL
4075 * explictly if we're restoring local properties cleared in the
4076 * first new-style receive.
4078 if (origprops != NULL &&
4079 zfs_set_prop_nvlist(tofs, (first_recvd_props ?
4080 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED),
4081 origprops, NULL) != 0) {
4083 * We stashed the original properties but failed to
4086 zc->zc_obj |= ZPROP_ERR_NORESTORE;
4091 nvlist_free(origprops);
4092 nvlist_free(errors);
4096 error = props_error;
4103 * zc_name name of snapshot to send
4104 * zc_cookie file descriptor to send stream to
4105 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj)
4106 * zc_sendobj objsetid of snapshot to send
4107 * zc_fromobj objsetid of incremental fromsnap (may be zero)
4108 * zc_guid if set, estimate size of stream only. zc_cookie is ignored.
4109 * output size in zc_objset_type.
4114 zfs_ioc_send(zfs_cmd_t *zc)
4118 boolean_t estimate = (zc->zc_guid != 0);
4120 if (zc->zc_obj != 0) {
4122 dsl_dataset_t *tosnap;
4124 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4128 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap);
4130 dsl_pool_rele(dp, FTAG);
4134 if (dsl_dir_is_clone(tosnap->ds_dir))
4135 zc->zc_fromobj = tosnap->ds_dir->dd_phys->dd_origin_obj;
4136 dsl_dataset_rele(tosnap, FTAG);
4137 dsl_pool_rele(dp, FTAG);
4142 dsl_dataset_t *tosnap;
4143 dsl_dataset_t *fromsnap = NULL;
4145 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4149 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap);
4151 dsl_pool_rele(dp, FTAG);
4155 if (zc->zc_fromobj != 0) {
4156 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj,
4159 dsl_dataset_rele(tosnap, FTAG);
4160 dsl_pool_rele(dp, FTAG);
4165 error = dmu_send_estimate(tosnap, fromsnap,
4166 &zc->zc_objset_type);
4168 if (fromsnap != NULL)
4169 dsl_dataset_rele(fromsnap, FTAG);
4170 dsl_dataset_rele(tosnap, FTAG);
4171 dsl_pool_rele(dp, FTAG);
4173 file_t *fp = getf(zc->zc_cookie);
4178 error = dmu_send_obj(zc->zc_name, zc->zc_sendobj,
4179 zc->zc_fromobj, zc->zc_cookie, fp->f_vnode, &off);
4181 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4183 releasef(zc->zc_cookie);
4190 * zc_name name of snapshot on which to report progress
4191 * zc_cookie file descriptor of send stream
4194 * zc_cookie number of bytes written in send stream thus far
4197 zfs_ioc_send_progress(zfs_cmd_t *zc)
4201 dmu_sendarg_t *dsp = NULL;
4204 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4208 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds);
4210 dsl_pool_rele(dp, FTAG);
4214 mutex_enter(&ds->ds_sendstream_lock);
4217 * Iterate over all the send streams currently active on this dataset.
4218 * If there's one which matches the specified file descriptor _and_ the
4219 * stream was started by the current process, return the progress of
4223 for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL;
4224 dsp = list_next(&ds->ds_sendstreams, dsp)) {
4225 if (dsp->dsa_outfd == zc->zc_cookie &&
4226 dsp->dsa_proc->group_leader == curproc->group_leader)
4231 zc->zc_cookie = *(dsp->dsa_off);
4235 mutex_exit(&ds->ds_sendstream_lock);
4236 dsl_dataset_rele(ds, FTAG);
4237 dsl_pool_rele(dp, FTAG);
4242 zfs_ioc_inject_fault(zfs_cmd_t *zc)
4246 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id,
4247 &zc->zc_inject_record);
4250 zc->zc_guid = (uint64_t)id;
4256 zfs_ioc_clear_fault(zfs_cmd_t *zc)
4258 return (zio_clear_fault((int)zc->zc_guid));
4262 zfs_ioc_inject_list_next(zfs_cmd_t *zc)
4264 int id = (int)zc->zc_guid;
4267 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name),
4268 &zc->zc_inject_record);
4276 zfs_ioc_error_log(zfs_cmd_t *zc)
4280 size_t count = (size_t)zc->zc_nvlist_dst_size;
4282 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
4285 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst,
4288 zc->zc_nvlist_dst_size = count;
4290 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa);
4292 spa_close(spa, FTAG);
4298 zfs_ioc_clear(zfs_cmd_t *zc)
4305 * On zpool clear we also fix up missing slogs
4307 mutex_enter(&spa_namespace_lock);
4308 spa = spa_lookup(zc->zc_name);
4310 mutex_exit(&spa_namespace_lock);
4313 if (spa_get_log_state(spa) == SPA_LOG_MISSING) {
4314 /* we need to let spa_open/spa_load clear the chains */
4315 spa_set_log_state(spa, SPA_LOG_CLEAR);
4317 spa->spa_last_open_failed = 0;
4318 mutex_exit(&spa_namespace_lock);
4320 if (zc->zc_cookie & ZPOOL_NO_REWIND) {
4321 error = spa_open(zc->zc_name, &spa, FTAG);
4324 nvlist_t *config = NULL;
4326 if (zc->zc_nvlist_src == 0)
4329 if ((error = get_nvlist(zc->zc_nvlist_src,
4330 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) {
4331 error = spa_open_rewind(zc->zc_name, &spa, FTAG,
4333 if (config != NULL) {
4336 if ((err = put_nvlist(zc, config)) != 0)
4338 nvlist_free(config);
4340 nvlist_free(policy);
4347 spa_vdev_state_enter(spa, SCL_NONE);
4349 if (zc->zc_guid == 0) {
4352 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE);
4354 (void) spa_vdev_state_exit(spa, NULL, ENODEV);
4355 spa_close(spa, FTAG);
4360 vdev_clear(spa, vd);
4362 (void) spa_vdev_state_exit(spa, NULL, 0);
4365 * Resume any suspended I/Os.
4367 if (zio_resume(spa) != 0)
4370 spa_close(spa, FTAG);
4376 zfs_ioc_pool_reopen(zfs_cmd_t *zc)
4381 error = spa_open(zc->zc_name, &spa, FTAG);
4385 spa_vdev_state_enter(spa, SCL_NONE);
4388 * If a resilver is already in progress then set the
4389 * spa_scrub_reopen flag to B_TRUE so that we don't restart
4390 * the scan as a side effect of the reopen. Otherwise, let
4391 * vdev_open() decided if a resilver is required.
4393 spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool);
4394 vdev_reopen(spa->spa_root_vdev);
4395 spa->spa_scrub_reopen = B_FALSE;
4397 (void) spa_vdev_state_exit(spa, NULL, 0);
4398 spa_close(spa, FTAG);
4403 * zc_name name of filesystem
4404 * zc_value name of origin snapshot
4407 * zc_string name of conflicting snapshot, if there is one
4410 zfs_ioc_promote(zfs_cmd_t *zc)
4415 * We don't need to unmount *all* the origin fs's snapshots, but
4418 cp = strchr(zc->zc_value, '@');
4421 (void) dmu_objset_find(zc->zc_value,
4422 zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS);
4423 return (dsl_dataset_promote(zc->zc_name, zc->zc_string));
4427 * Retrieve a single {user|group}{used|quota}@... property.
4430 * zc_name name of filesystem
4431 * zc_objset_type zfs_userquota_prop_t
4432 * zc_value domain name (eg. "S-1-234-567-89")
4433 * zc_guid RID/UID/GID
4436 * zc_cookie property value
4439 zfs_ioc_userspace_one(zfs_cmd_t *zc)
4444 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
4447 error = zfs_sb_hold(zc->zc_name, FTAG, &zsb, B_FALSE);
4451 error = zfs_userspace_one(zsb,
4452 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie);
4453 zfs_sb_rele(zsb, FTAG);
4460 * zc_name name of filesystem
4461 * zc_cookie zap cursor
4462 * zc_objset_type zfs_userquota_prop_t
4463 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist)
4466 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t)
4467 * zc_cookie zap cursor
4470 zfs_ioc_userspace_many(zfs_cmd_t *zc)
4473 int bufsize = zc->zc_nvlist_dst_size;
4480 error = zfs_sb_hold(zc->zc_name, FTAG, &zsb, B_FALSE);
4484 buf = vmem_alloc(bufsize, KM_SLEEP);
4486 error = zfs_userspace_many(zsb, zc->zc_objset_type, &zc->zc_cookie,
4487 buf, &zc->zc_nvlist_dst_size);
4490 error = xcopyout(buf,
4491 (void *)(uintptr_t)zc->zc_nvlist_dst,
4492 zc->zc_nvlist_dst_size);
4494 vmem_free(buf, bufsize);
4495 zfs_sb_rele(zsb, FTAG);
4502 * zc_name name of filesystem
4508 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc)
4514 if (get_zfs_sb(zc->zc_name, &zsb) == 0) {
4515 if (!dmu_objset_userused_enabled(zsb->z_os)) {
4517 * If userused is not enabled, it may be because the
4518 * objset needs to be closed & reopened (to grow the
4519 * objset_phys_t). Suspend/resume the fs will do that.
4521 error = zfs_suspend_fs(zsb);
4523 error = zfs_resume_fs(zsb, zc->zc_name);
4526 error = dmu_objset_userspace_upgrade(zsb->z_os);
4527 deactivate_super(zsb->z_sb);
4529 /* XXX kind of reading contents without owning */
4530 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4534 error = dmu_objset_userspace_upgrade(os);
4535 dmu_objset_rele(os, FTAG);
4542 zfs_ioc_share(zfs_cmd_t *zc)
4547 ace_t full_access[] = {
4548 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0}
4553 * zc_name name of containing filesystem
4554 * zc_obj object # beyond which we want next in-use object #
4557 * zc_obj next in-use object #
4560 zfs_ioc_next_obj(zfs_cmd_t *zc)
4562 objset_t *os = NULL;
4565 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4569 error = dmu_object_next(os, &zc->zc_obj, B_FALSE,
4570 os->os_dsl_dataset->ds_phys->ds_prev_snap_txg);
4572 dmu_objset_rele(os, FTAG);
4578 * zc_name name of filesystem
4579 * zc_value prefix name for snapshot
4580 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
4583 * zc_value short name of new snapshot
4586 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc)
4593 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor);
4597 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value,
4598 (u_longlong_t)ddi_get_lbolt64());
4599 hold_name = kmem_asprintf("%%%s", zc->zc_value);
4601 error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor,
4604 (void) strcpy(zc->zc_value, snap_name);
4607 zfs_onexit_fd_rele(zc->zc_cleanup_fd);
4613 * zc_name name of "to" snapshot
4614 * zc_value name of "from" snapshot
4615 * zc_cookie file descriptor to write diff data on
4618 * dmu_diff_record_t's to the file descriptor
4621 zfs_ioc_diff(zfs_cmd_t *zc)
4627 fp = getf(zc->zc_cookie);
4633 error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off);
4635 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4637 releasef(zc->zc_cookie);
4643 * Remove all ACL files in shares dir
4645 #ifdef HAVE_SMB_SHARE
4647 zfs_smb_acl_purge(znode_t *dzp)
4650 zap_attribute_t zap;
4651 zfs_sb_t *zsb = ZTOZSB(dzp);
4654 for (zap_cursor_init(&zc, zsb->z_os, dzp->z_id);
4655 (error = zap_cursor_retrieve(&zc, &zap)) == 0;
4656 zap_cursor_advance(&zc)) {
4657 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred,
4661 zap_cursor_fini(&zc);
4664 #endif /* HAVE_SMB_SHARE */
4667 zfs_ioc_smb_acl(zfs_cmd_t *zc)
4669 #ifdef HAVE_SMB_SHARE
4672 vnode_t *resourcevp = NULL;
4681 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
4682 NO_FOLLOW, NULL, &vp)) != 0)
4685 /* Now make sure mntpnt and dataset are ZFS */
4687 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
4688 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
4689 zc->zc_name) != 0)) {
4699 * Create share dir if its missing.
4701 mutex_enter(&zsb->z_lock);
4702 if (zsb->z_shares_dir == 0) {
4705 tx = dmu_tx_create(zsb->z_os);
4706 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE,
4708 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
4709 error = dmu_tx_assign(tx, TXG_WAIT);
4713 error = zfs_create_share_dir(zsb, tx);
4717 mutex_exit(&zsb->z_lock);
4723 mutex_exit(&zsb->z_lock);
4725 ASSERT(zsb->z_shares_dir);
4726 if ((error = zfs_zget(zsb, zsb->z_shares_dir, &sharedir)) != 0) {
4732 switch (zc->zc_cookie) {
4733 case ZFS_SMB_ACL_ADD:
4734 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE;
4735 vattr.va_mode = S_IFREG|0777;
4739 vsec.vsa_mask = VSA_ACE;
4740 vsec.vsa_aclentp = &full_access;
4741 vsec.vsa_aclentsz = sizeof (full_access);
4742 vsec.vsa_aclcnt = 1;
4744 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string,
4745 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec);
4747 VN_RELE(resourcevp);
4750 case ZFS_SMB_ACL_REMOVE:
4751 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred,
4755 case ZFS_SMB_ACL_RENAME:
4756 if ((error = get_nvlist(zc->zc_nvlist_src,
4757 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) {
4762 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) ||
4763 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET,
4766 VN_RELE(ZTOV(sharedir));
4768 nvlist_free(nvlist);
4771 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target,
4773 nvlist_free(nvlist);
4776 case ZFS_SMB_ACL_PURGE:
4777 error = zfs_smb_acl_purge(sharedir);
4786 VN_RELE(ZTOV(sharedir));
4793 #endif /* HAVE_SMB_SHARE */
4798 * "holds" -> { snapname -> holdname (string), ... }
4799 * (optional) "cleanup_fd" -> fd (int32)
4803 * snapname -> error value (int32)
4809 zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist)
4812 int cleanup_fd = -1;
4816 error = nvlist_lookup_nvlist(args, "holds", &holds);
4820 if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) {
4821 error = zfs_onexit_fd_hold(cleanup_fd, &minor);
4826 error = dsl_dataset_user_hold(holds, minor, errlist);
4828 zfs_onexit_fd_rele(cleanup_fd);
4833 * innvl is not used.
4836 * holdname -> time added (uint64 seconds since epoch)
4842 zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl)
4844 return (dsl_dataset_get_holds(snapname, outnvl));
4849 * snapname -> { holdname, ... }
4854 * snapname -> error value (int32)
4860 zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist)
4865 * The release may cause the snapshot to be destroyed; make sure it
4868 for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
4869 pair = nvlist_next_nvpair(holds, pair))
4870 zfs_unmount_snap(nvpair_name(pair));
4872 return (dsl_dataset_user_release(holds, errlist));
4877 * zc_guid flags (ZEVENT_NONBLOCK)
4880 * zc_nvlist_dst next nvlist event
4881 * zc_cookie dropped events since last get
4882 * zc_cleanup_fd cleanup-on-exit file descriptor
4885 zfs_ioc_events_next(zfs_cmd_t *zc)
4888 nvlist_t *event = NULL;
4890 uint64_t dropped = 0;
4893 error = zfs_zevent_fd_hold(zc->zc_cleanup_fd, &minor, &ze);
4898 error = zfs_zevent_next(ze, &event,
4899 &zc->zc_nvlist_dst_size, &dropped);
4900 if (event != NULL) {
4901 zc->zc_cookie = dropped;
4902 error = put_nvlist(zc, event);
4906 if (zc->zc_guid & ZEVENT_NONBLOCK)
4909 if ((error == 0) || (error != ENOENT))
4912 error = zfs_zevent_wait(ze);
4917 zfs_zevent_fd_rele(zc->zc_cleanup_fd);
4924 * zc_cookie cleared events count
4927 zfs_ioc_events_clear(zfs_cmd_t *zc)
4931 zfs_zevent_drain_all(&count);
4932 zc->zc_cookie = count;
4939 * zc_name name of new filesystem or snapshot
4940 * zc_value full name of old snapshot
4943 * zc_cookie space in bytes
4944 * zc_objset_type compressed space in bytes
4945 * zc_perm_action uncompressed space in bytes
4948 zfs_ioc_space_written(zfs_cmd_t *zc)
4952 dsl_dataset_t *new, *old;
4954 error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
4957 error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new);
4959 dsl_pool_rele(dp, FTAG);
4962 error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old);
4964 dsl_dataset_rele(new, FTAG);
4965 dsl_pool_rele(dp, FTAG);
4969 error = dsl_dataset_space_written(old, new, &zc->zc_cookie,
4970 &zc->zc_objset_type, &zc->zc_perm_action);
4971 dsl_dataset_rele(old, FTAG);
4972 dsl_dataset_rele(new, FTAG);
4973 dsl_pool_rele(dp, FTAG);
4979 * "firstsnap" -> snapshot name
4983 * "used" -> space in bytes
4984 * "compressed" -> compressed space in bytes
4985 * "uncompressed" -> uncompressed space in bytes
4989 zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl)
4993 dsl_dataset_t *new, *old;
4995 uint64_t used, comp, uncomp;
4997 if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0)
5000 error = dsl_pool_hold(lastsnap, FTAG, &dp);
5004 error = dsl_dataset_hold(dp, lastsnap, FTAG, &new);
5006 dsl_pool_rele(dp, FTAG);
5009 error = dsl_dataset_hold(dp, firstsnap, FTAG, &old);
5011 dsl_dataset_rele(new, FTAG);
5012 dsl_pool_rele(dp, FTAG);
5016 error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp);
5017 dsl_dataset_rele(old, FTAG);
5018 dsl_dataset_rele(new, FTAG);
5019 dsl_pool_rele(dp, FTAG);
5020 fnvlist_add_uint64(outnvl, "used", used);
5021 fnvlist_add_uint64(outnvl, "compressed", comp);
5022 fnvlist_add_uint64(outnvl, "uncompressed", uncomp);
5028 * "fd" -> file descriptor to write stream to (int32)
5029 * (optional) "fromsnap" -> full snap name to send an incremental from
5036 zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl)
5040 char *fromname = NULL;
5044 error = nvlist_lookup_int32(innvl, "fd", &fd);
5048 (void) nvlist_lookup_string(innvl, "fromsnap", &fromname);
5050 if ((fp = getf(fd)) == NULL)
5054 error = dmu_send(snapname, fromname, fd, fp->f_vnode, &off);
5056 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
5064 * Determine approximately how large a zfs send stream will be -- the number
5065 * of bytes that will be written to the fd supplied to zfs_ioc_send_new().
5068 * (optional) "fromsnap" -> full snap name to send an incremental from
5072 * "space" -> bytes of space (uint64)
5076 zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl)
5079 dsl_dataset_t *fromsnap = NULL;
5080 dsl_dataset_t *tosnap;
5085 error = dsl_pool_hold(snapname, FTAG, &dp);
5089 error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap);
5091 dsl_pool_rele(dp, FTAG);
5095 error = nvlist_lookup_string(innvl, "fromsnap", &fromname);
5097 error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap);
5099 dsl_dataset_rele(tosnap, FTAG);
5100 dsl_pool_rele(dp, FTAG);
5105 error = dmu_send_estimate(tosnap, fromsnap, &space);
5106 fnvlist_add_uint64(outnvl, "space", space);
5108 if (fromsnap != NULL)
5109 dsl_dataset_rele(fromsnap, FTAG);
5110 dsl_dataset_rele(tosnap, FTAG);
5111 dsl_pool_rele(dp, FTAG);
5116 static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST];
5119 zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5120 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
5121 boolean_t log_history, zfs_ioc_poolcheck_t pool_check)
5123 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST];
5125 ASSERT3U(ioc, >=, ZFS_IOC_FIRST);
5126 ASSERT3U(ioc, <, ZFS_IOC_LAST);
5127 ASSERT3P(vec->zvec_legacy_func, ==, NULL);
5128 ASSERT3P(vec->zvec_func, ==, NULL);
5130 vec->zvec_legacy_func = func;
5131 vec->zvec_secpolicy = secpolicy;
5132 vec->zvec_namecheck = namecheck;
5133 vec->zvec_allow_log = log_history;
5134 vec->zvec_pool_check = pool_check;
5138 * See the block comment at the beginning of this file for details on
5139 * each argument to this function.
5142 zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func,
5143 zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
5144 zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist,
5145 boolean_t allow_log)
5147 zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST];
5149 ASSERT3U(ioc, >=, ZFS_IOC_FIRST);
5150 ASSERT3U(ioc, <, ZFS_IOC_LAST);
5151 ASSERT3P(vec->zvec_legacy_func, ==, NULL);
5152 ASSERT3P(vec->zvec_func, ==, NULL);
5154 /* if we are logging, the name must be valid */
5155 ASSERT(!allow_log || namecheck != NO_NAME);
5157 vec->zvec_name = name;
5158 vec->zvec_func = func;
5159 vec->zvec_secpolicy = secpolicy;
5160 vec->zvec_namecheck = namecheck;
5161 vec->zvec_pool_check = pool_check;
5162 vec->zvec_smush_outnvlist = smush_outnvlist;
5163 vec->zvec_allow_log = allow_log;
5167 zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5168 zfs_secpolicy_func_t *secpolicy, boolean_t log_history,
5169 zfs_ioc_poolcheck_t pool_check)
5171 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5172 POOL_NAME, log_history, pool_check);
5176 zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5177 zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check)
5179 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5180 DATASET_NAME, B_FALSE, pool_check);
5184 zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func)
5186 zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config,
5187 POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5191 zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5192 zfs_secpolicy_func_t *secpolicy)
5194 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5195 NO_NAME, B_FALSE, POOL_CHECK_NONE);
5199 zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc,
5200 zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy)
5202 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5203 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED);
5207 zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func)
5209 zfs_ioctl_register_dataset_read_secpolicy(ioc, func,
5210 zfs_secpolicy_read);
5214 zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
5215 zfs_secpolicy_func_t *secpolicy)
5217 zfs_ioctl_register_legacy(ioc, func, secpolicy,
5218 DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5222 zfs_ioctl_init(void)
5224 zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT,
5225 zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME,
5226 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5228 zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY,
5229 zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME,
5230 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE);
5232 zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS,
5233 zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME,
5234 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5236 zfs_ioctl_register("send", ZFS_IOC_SEND_NEW,
5237 zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME,
5238 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5240 zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE,
5241 zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME,
5242 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5244 zfs_ioctl_register("create", ZFS_IOC_CREATE,
5245 zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME,
5246 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5248 zfs_ioctl_register("clone", ZFS_IOC_CLONE,
5249 zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME,
5250 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5252 zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS,
5253 zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME,
5254 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5256 zfs_ioctl_register("hold", ZFS_IOC_HOLD,
5257 zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME,
5258 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5259 zfs_ioctl_register("release", ZFS_IOC_RELEASE,
5260 zfs_ioc_release, zfs_secpolicy_release, POOL_NAME,
5261 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
5263 zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS,
5264 zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME,
5265 POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
5267 /* IOCTLS that use the legacy function signature */
5269 zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze,
5270 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY);
5272 zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create,
5273 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5274 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN,
5276 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE,
5277 zfs_ioc_pool_upgrade);
5278 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD,
5280 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE,
5281 zfs_ioc_vdev_remove);
5282 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE,
5283 zfs_ioc_vdev_set_state);
5284 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH,
5285 zfs_ioc_vdev_attach);
5286 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH,
5287 zfs_ioc_vdev_detach);
5288 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH,
5289 zfs_ioc_vdev_setpath);
5290 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU,
5291 zfs_ioc_vdev_setfru);
5292 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS,
5293 zfs_ioc_pool_set_props);
5294 zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT,
5295 zfs_ioc_vdev_split);
5296 zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID,
5297 zfs_ioc_pool_reguid);
5299 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS,
5300 zfs_ioc_pool_configs, zfs_secpolicy_none);
5301 zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT,
5302 zfs_ioc_pool_tryimport, zfs_secpolicy_config);
5303 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT,
5304 zfs_ioc_inject_fault, zfs_secpolicy_inject);
5305 zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT,
5306 zfs_ioc_clear_fault, zfs_secpolicy_inject);
5307 zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT,
5308 zfs_ioc_inject_list_next, zfs_secpolicy_inject);
5311 * pool destroy, and export don't log the history as part of
5312 * zfsdev_ioctl, but rather zfs_ioc_pool_export
5313 * does the logging of those commands.
5315 zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy,
5316 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE);
5317 zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export,
5318 zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE);
5320 zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats,
5321 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE);
5322 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props,
5323 zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE);
5325 zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log,
5326 zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED);
5327 zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME,
5328 zfs_ioc_dsobj_to_dsname,
5329 zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED);
5330 zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY,
5331 zfs_ioc_pool_get_history,
5332 zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED);
5334 zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import,
5335 zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
5337 zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear,
5338 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED);
5339 zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen,
5340 zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED);
5342 zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN,
5343 zfs_ioc_space_written);
5344 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS,
5345 zfs_ioc_objset_recvd_props);
5346 zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ,
5348 zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL,
5350 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS,
5351 zfs_ioc_objset_stats);
5352 zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS,
5353 zfs_ioc_objset_zplprops);
5354 zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT,
5355 zfs_ioc_dataset_list_next);
5356 zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT,
5357 zfs_ioc_snapshot_list_next);
5358 zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS,
5359 zfs_ioc_send_progress);
5361 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF,
5362 zfs_ioc_diff, zfs_secpolicy_diff);
5363 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS,
5364 zfs_ioc_obj_to_stats, zfs_secpolicy_diff);
5365 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH,
5366 zfs_ioc_obj_to_path, zfs_secpolicy_diff);
5367 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE,
5368 zfs_ioc_userspace_one, zfs_secpolicy_userspace_one);
5369 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY,
5370 zfs_ioc_userspace_many, zfs_secpolicy_userspace_many);
5371 zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND,
5372 zfs_ioc_send, zfs_secpolicy_send);
5374 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop,
5375 zfs_secpolicy_none);
5376 zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy,
5377 zfs_secpolicy_destroy);
5378 zfs_ioctl_register_dataset_modify(ZFS_IOC_ROLLBACK, zfs_ioc_rollback,
5379 zfs_secpolicy_rollback);
5380 zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename,
5381 zfs_secpolicy_rename);
5382 zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv,
5383 zfs_secpolicy_recv);
5384 zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote,
5385 zfs_secpolicy_promote);
5386 zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP,
5387 zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop);
5388 zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl,
5389 zfs_secpolicy_set_fsacl);
5391 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share,
5392 zfs_secpolicy_share, POOL_CHECK_NONE);
5393 zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl,
5394 zfs_secpolicy_smb_acl, POOL_CHECK_NONE);
5395 zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE,
5396 zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade,
5397 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5398 zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT,
5399 zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot,
5400 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
5405 zfs_ioctl_register_legacy(ZFS_IOC_CREATE_MINOR, zfs_ioc_create_minor,
5406 zfs_secpolicy_config, DATASET_NAME, B_FALSE, POOL_CHECK_NONE);
5407 zfs_ioctl_register_legacy(ZFS_IOC_REMOVE_MINOR, zfs_ioc_remove_minor,
5408 zfs_secpolicy_config, DATASET_NAME, B_FALSE, POOL_CHECK_NONE);
5409 zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_NEXT, zfs_ioc_events_next,
5410 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE);
5411 zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_CLEAR, zfs_ioc_events_clear,
5412 zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE);
5416 pool_status_check(const char *name, zfs_ioc_namecheck_t type,
5417 zfs_ioc_poolcheck_t check)
5422 ASSERT(type == POOL_NAME || type == DATASET_NAME);
5424 if (check & POOL_CHECK_NONE)
5427 error = spa_open(name, &spa, FTAG);
5429 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa))
5431 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa))
5433 spa_close(spa, FTAG);
5439 zfsdev_get_state_impl(minor_t minor, enum zfsdev_state_type which)
5443 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5445 for (zs = list_head(&zfsdev_state_list); zs != NULL;
5446 zs = list_next(&zfsdev_state_list, zs)) {
5447 if (zs->zs_minor == minor) {
5449 case ZST_ONEXIT: return (zs->zs_onexit);
5450 case ZST_ZEVENT: return (zs->zs_zevent);
5451 case ZST_ALL: return (zs);
5460 zfsdev_get_state(minor_t minor, enum zfsdev_state_type which)
5464 mutex_enter(&zfsdev_state_lock);
5465 ptr = zfsdev_get_state_impl(minor, which);
5466 mutex_exit(&zfsdev_state_lock);
5472 zfsdev_getminor(struct file *filp)
5474 ASSERT(filp != NULL);
5475 ASSERT(filp->private_data != NULL);
5477 return (((zfsdev_state_t *)filp->private_data)->zs_minor);
5481 * Find a free minor number. The zfsdev_state_list is expected to
5482 * be short since it is only a list of currently open file handles.
5485 zfsdev_minor_alloc(void)
5487 static minor_t last_minor = 0;
5490 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5492 for (m = last_minor + 1; m != last_minor; m++) {
5493 if (m > ZFSDEV_MAX_MINOR)
5495 if (zfsdev_get_state_impl(m, ZST_ALL) == NULL) {
5505 zfsdev_state_init(struct file *filp)
5510 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5512 minor = zfsdev_minor_alloc();
5516 zs = kmem_zalloc( sizeof(zfsdev_state_t), KM_SLEEP);
5519 zs->zs_minor = minor;
5520 filp->private_data = zs;
5522 zfs_onexit_init((zfs_onexit_t **)&zs->zs_onexit);
5523 zfs_zevent_init((zfs_zevent_t **)&zs->zs_zevent);
5525 list_insert_tail(&zfsdev_state_list, zs);
5531 zfsdev_state_destroy(struct file *filp)
5535 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
5536 ASSERT(filp->private_data != NULL);
5538 zs = filp->private_data;
5539 zfs_onexit_destroy(zs->zs_onexit);
5540 zfs_zevent_destroy(zs->zs_zevent);
5542 list_remove(&zfsdev_state_list, zs);
5543 kmem_free(zs, sizeof(zfsdev_state_t));
5549 zfsdev_open(struct inode *ino, struct file *filp)
5553 mutex_enter(&zfsdev_state_lock);
5554 error = zfsdev_state_init(filp);
5555 mutex_exit(&zfsdev_state_lock);
5561 zfsdev_release(struct inode *ino, struct file *filp)
5565 mutex_enter(&zfsdev_state_lock);
5566 error = zfsdev_state_destroy(filp);
5567 mutex_exit(&zfsdev_state_lock);
5573 zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
5577 int error, rc, len, flag = 0;
5578 const zfs_ioc_vec_t *vec;
5579 char saved_poolname[MAXNAMELEN];
5580 nvlist_t *innvl = NULL;
5582 vecnum = cmd - ZFS_IOC_FIRST;
5583 if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
5585 vec = &zfs_ioc_vec[vecnum];
5587 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
5589 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag);
5595 zc->zc_iflags = flag & FKIOCTL;
5596 if (zc->zc_nvlist_src_size != 0) {
5597 error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
5598 zc->zc_iflags, &innvl);
5604 * Ensure that all pool/dataset names are valid before we pass down to
5607 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
5608 switch (vec->zvec_namecheck) {
5610 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
5613 error = pool_status_check(zc->zc_name,
5614 vec->zvec_namecheck, vec->zvec_pool_check);
5618 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
5621 error = pool_status_check(zc->zc_name,
5622 vec->zvec_namecheck, vec->zvec_pool_check);
5630 if (error == 0 && !(flag & FKIOCTL))
5631 error = vec->zvec_secpolicy(zc, innvl, CRED());
5636 /* legacy ioctls can modify zc_name */
5637 (void) strlcpy(saved_poolname, zc->zc_name, sizeof(saved_poolname));
5638 len = strcspn(saved_poolname, "/@") + 1;
5639 saved_poolname[len] = '\0';
5641 if (vec->zvec_func != NULL) {
5645 nvlist_t *lognv = NULL;
5647 ASSERT(vec->zvec_legacy_func == NULL);
5650 * Add the innvl to the lognv before calling the func,
5651 * in case the func changes the innvl.
5653 if (vec->zvec_allow_log) {
5654 lognv = fnvlist_alloc();
5655 fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL,
5657 if (!nvlist_empty(innvl)) {
5658 fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL,
5663 VERIFY0(nvlist_alloc(&outnvl, NV_UNIQUE_NAME, KM_PUSHPAGE));
5664 error = vec->zvec_func(zc->zc_name, innvl, outnvl);
5666 if (error == 0 && vec->zvec_allow_log &&
5667 spa_open(zc->zc_name, &spa, FTAG) == 0) {
5668 if (!nvlist_empty(outnvl)) {
5669 fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL,
5672 (void) spa_history_log_nvl(spa, lognv);
5673 spa_close(spa, FTAG);
5675 fnvlist_free(lognv);
5677 if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) {
5679 if (vec->zvec_smush_outnvlist) {
5680 smusherror = nvlist_smush(outnvl,
5681 zc->zc_nvlist_dst_size);
5683 if (smusherror == 0)
5684 puterror = put_nvlist(zc, outnvl);
5690 nvlist_free(outnvl);
5692 error = vec->zvec_legacy_func(zc);
5697 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag);
5698 if (error == 0 && rc != 0)
5700 if (error == 0 && vec->zvec_allow_log) {
5701 char *s = tsd_get(zfs_allow_log_key);
5704 (void) tsd_set(zfs_allow_log_key, strdup(saved_poolname));
5707 kmem_free(zc, sizeof (zfs_cmd_t));
5711 #ifdef CONFIG_COMPAT
5713 zfsdev_compat_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
5715 return zfsdev_ioctl(filp, cmd, arg);
5718 #define zfsdev_compat_ioctl NULL
5721 static const struct file_operations zfsdev_fops = {
5722 .open = zfsdev_open,
5723 .release = zfsdev_release,
5724 .unlocked_ioctl = zfsdev_ioctl,
5725 .compat_ioctl = zfsdev_compat_ioctl,
5726 .owner = THIS_MODULE,
5729 static struct miscdevice zfs_misc = {
5730 .minor = MISC_DYNAMIC_MINOR,
5732 .fops = &zfsdev_fops,
5740 mutex_init(&zfsdev_state_lock, NULL, MUTEX_DEFAULT, NULL);
5741 list_create(&zfsdev_state_list, sizeof (zfsdev_state_t),
5742 offsetof(zfsdev_state_t, zs_next));
5744 error = misc_register(&zfs_misc);
5746 printk(KERN_INFO "ZFS: misc_register() failed %d\n", error);
5758 error = misc_deregister(&zfs_misc);
5760 printk(KERN_INFO "ZFS: misc_deregister() failed %d\n", error);
5762 mutex_destroy(&zfsdev_state_lock);
5763 list_destroy(&zfsdev_state_list);
5767 zfs_allow_log_destroy(void *arg)
5769 char *poolname = arg;
5774 #define ZFS_DEBUG_STR " (DEBUG mode)"
5776 #define ZFS_DEBUG_STR ""
5784 spa_init(FREAD | FWRITE);
5787 if ((error = zvol_init()) != 0)
5792 if ((error = zfs_attach()) != 0)
5795 tsd_create(&zfs_fsyncer_key, NULL);
5796 tsd_create(&rrw_tsd_key, rrw_tsd_destroy);
5797 tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy);
5799 printk(KERN_NOTICE "ZFS: Loaded module v%s-%s%s, "
5800 "ZFS pool version %s, ZFS filesystem version %s\n",
5801 ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR,
5802 SPA_VERSION_STRING, ZPL_VERSION_STRING);
5811 printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s-%s%s"
5812 ", rc = %d\n", ZFS_META_VERSION, ZFS_META_RELEASE,
5813 ZFS_DEBUG_STR, error);
5826 tsd_destroy(&zfs_fsyncer_key);
5827 tsd_destroy(&rrw_tsd_key);
5828 tsd_destroy(&zfs_allow_log_key);
5830 printk(KERN_NOTICE "ZFS: Unloaded module v%s-%s%s\n",
5831 ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR);
5837 spl_module_init(_init);
5838 spl_module_exit(_fini);
5840 MODULE_DESCRIPTION("ZFS");
5841 MODULE_AUTHOR(ZFS_META_AUTHOR);
5842 MODULE_LICENSE(ZFS_META_LICENSE);
5843 #endif /* HAVE_SPL */