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]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
25 #include <sys/types.h>
26 #include <sys/param.h>
27 #include <sys/errno.h>
30 #include <sys/modctl.h>
35 #include <sys/cmn_err.h>
37 #include <sys/zfs_ioctl.h>
38 #include <sys/zfs_vfsops.h>
39 #include <sys/zfs_znode.h>
42 #include <sys/spa_impl.h>
44 #include <sys/priv_impl.h>
46 #include <sys/dsl_dir.h>
47 #include <sys/dsl_dataset.h>
48 #include <sys/dsl_prop.h>
49 #include <sys/dsl_deleg.h>
50 #include <sys/dmu_objset.h>
52 #include <sys/sunddi.h>
53 #include <sys/sunldi.h>
54 #include <sys/policy.h>
56 #include <sys/nvpair.h>
57 #include <sys/pathname.h>
58 #include <sys/mount.h>
60 #include <sys/fs/zfs.h>
61 #include <sys/zfs_ctldir.h>
62 #include <sys/zfs_dir.h>
63 #include <sys/zfs_onexit.h>
65 #include <sys/dsl_scan.h>
66 #include <sharefs/share.h>
67 #include <sys/dmu_objset.h>
68 #include <sys/fm/util.h>
70 #include <linux/miscdevice.h>
72 #include "zfs_namecheck.h"
74 #include "zfs_deleg.h"
75 #include "zfs_comutil.h"
77 kmutex_t zfsdev_state_lock;
78 list_t zfsdev_state_list;
80 extern void zfs_init(void);
81 extern void zfs_fini(void);
83 typedef int zfs_ioc_func_t(zfs_cmd_t *);
84 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *);
90 } zfs_ioc_namecheck_t;
93 POOL_CHECK_NONE = 1 << 0,
94 POOL_CHECK_SUSPENDED = 1 << 1,
95 POOL_CHECK_READONLY = 1 << 2
96 } zfs_ioc_poolcheck_t;
98 typedef struct zfs_ioc_vec {
99 zfs_ioc_func_t *zvec_func;
100 zfs_secpolicy_func_t *zvec_secpolicy;
101 zfs_ioc_namecheck_t zvec_namecheck;
102 boolean_t zvec_his_log;
103 zfs_ioc_poolcheck_t zvec_pool_check;
106 /* This array is indexed by zfs_userquota_prop_t */
107 static const char *userquota_perms[] = {
108 ZFS_DELEG_PERM_USERUSED,
109 ZFS_DELEG_PERM_USERQUOTA,
110 ZFS_DELEG_PERM_GROUPUSED,
111 ZFS_DELEG_PERM_GROUPQUOTA,
114 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc);
115 static int zfs_check_settable(const char *name, nvpair_t *property,
117 static int zfs_check_clearable(char *dataset, nvlist_t *props,
119 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *,
121 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t **);
124 history_str_free(char *buf)
126 kmem_free(buf, HIS_MAX_RECORD_LEN);
130 history_str_get(zfs_cmd_t *zc)
134 if (zc->zc_history == 0)
137 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP | KM_NODEBUG);
138 if (copyinstr((void *)(uintptr_t)zc->zc_history,
139 buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
140 history_str_free(buf);
144 buf[HIS_MAX_RECORD_LEN -1] = '\0';
150 * Check to see if the named dataset is currently defined as bootable
153 zfs_is_bootfs(const char *name)
157 if (dmu_objset_hold(name, FTAG, &os) == 0) {
159 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os)));
160 dmu_objset_rele(os, FTAG);
167 * zfs_earlier_version
169 * Return non-zero if the spa version is less than requested version.
172 zfs_earlier_version(const char *name, int version)
176 if (spa_open(name, &spa, FTAG) == 0) {
177 if (spa_version(spa) < version) {
178 spa_close(spa, FTAG);
181 spa_close(spa, FTAG);
187 * zpl_earlier_version
189 * Return TRUE if the ZPL version is less than requested version.
192 zpl_earlier_version(const char *name, int version)
195 boolean_t rc = B_TRUE;
197 if (dmu_objset_hold(name, FTAG, &os) == 0) {
200 if (dmu_objset_type(os) != DMU_OST_ZFS) {
201 dmu_objset_rele(os, FTAG);
204 /* XXX reading from non-owned objset */
205 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0)
206 rc = zplversion < version;
207 dmu_objset_rele(os, FTAG);
213 zfs_log_history(zfs_cmd_t *zc)
218 if ((buf = history_str_get(zc)) == NULL)
221 if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
222 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
223 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL);
224 spa_close(spa, FTAG);
226 history_str_free(buf);
230 * Policy for top-level read operations (list pools). Requires no privileges,
231 * and can be used in the local zone, as there is no associated dataset.
235 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr)
241 * Policy for dataset read operations (list children, get statistics). Requires
242 * no privileges, but must be visible in the local zone.
246 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr)
248 if (INGLOBALZONE(curproc) ||
249 zone_dataset_visible(zc->zc_name, NULL))
256 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr)
261 * The dataset must be visible by this zone -- check this first
262 * so they don't see EPERM on something they shouldn't know about.
264 if (!INGLOBALZONE(curproc) &&
265 !zone_dataset_visible(dataset, &writable))
268 if (INGLOBALZONE(curproc)) {
270 * If the fs is zoned, only root can access it from the
273 if (secpolicy_zfs(cr) && zoned)
277 * If we are in a local zone, the 'zoned' property must be set.
282 /* must be writable by this zone */
290 zfs_dozonecheck(const char *dataset, cred_t *cr)
294 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
297 return (zfs_dozonecheck_impl(dataset, zoned, cr));
301 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr)
305 rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER);
306 if (dsl_prop_get_ds(ds, "zoned", 8, 1, &zoned, NULL)) {
307 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
310 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
312 return (zfs_dozonecheck_impl(dataset, zoned, cr));
316 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
320 error = zfs_dozonecheck(name, cr);
322 error = secpolicy_zfs(cr);
324 error = dsl_deleg_access(name, perm, cr);
330 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds,
331 const char *perm, cred_t *cr)
335 error = zfs_dozonecheck_ds(name, ds, cr);
337 error = secpolicy_zfs(cr);
339 error = dsl_deleg_access_impl(ds, perm, cr);
345 * Policy for setting the security label property.
347 * Returns 0 for success, non-zero for access and other errors.
350 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr)
353 char ds_hexsl[MAXNAMELEN];
354 bslabel_t ds_sl, new_sl;
355 boolean_t new_default = FALSE;
357 int needed_priv = -1;
360 /* First get the existing dataset label. */
361 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL),
362 1, sizeof (ds_hexsl), &ds_hexsl, NULL);
366 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
369 /* The label must be translatable */
370 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0))
374 * In a non-global zone, disallow attempts to set a label that
375 * doesn't match that of the zone; otherwise no other checks
378 if (!INGLOBALZONE(curproc)) {
379 if (new_default || !blequal(&new_sl, CR_SL(CRED())))
385 * For global-zone datasets (i.e., those whose zoned property is
386 * "off", verify that the specified new label is valid for the
389 if (dsl_prop_get_integer(name,
390 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL))
393 if (zfs_check_global_label(name, strval) != 0)
398 * If the existing dataset label is nondefault, check if the
399 * dataset is mounted (label cannot be changed while mounted).
400 * Get the zfs_sb_t; if there isn't one, then the dataset isn't
401 * mounted (or isn't a dataset, doesn't exist, ...).
403 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) {
405 static char *setsl_tag = "setsl_tag";
408 * Try to own the dataset; abort if there is any error,
409 * (e.g., already mounted, in use, or other error).
411 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE,
416 dmu_objset_disown(os, setsl_tag);
419 needed_priv = PRIV_FILE_DOWNGRADE_SL;
423 if (hexstr_to_label(strval, &new_sl) != 0)
426 if (blstrictdom(&ds_sl, &new_sl))
427 needed_priv = PRIV_FILE_DOWNGRADE_SL;
428 else if (blstrictdom(&new_sl, &ds_sl))
429 needed_priv = PRIV_FILE_UPGRADE_SL;
431 /* dataset currently has a default label */
433 needed_priv = PRIV_FILE_UPGRADE_SL;
437 if (needed_priv != -1)
438 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL));
442 #endif /* HAVE_MLSLABEL */
446 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval,
452 * Check permissions for special properties.
459 * Disallow setting of 'zoned' from within a local zone.
461 if (!INGLOBALZONE(curproc))
466 if (!INGLOBALZONE(curproc)) {
468 char setpoint[MAXNAMELEN];
470 * Unprivileged users are allowed to modify the
471 * quota on things *under* (ie. contained by)
472 * the thing they own.
474 if (dsl_prop_get_integer(dsname, "zoned", &zoned,
477 if (!zoned || strlen(dsname) <= strlen(setpoint))
482 case ZFS_PROP_MLSLABEL:
483 if (!is_system_labeled())
486 if (nvpair_value_string(propval, &strval) == 0) {
489 err = zfs_set_slabel_policy(dsname, strval, CRED());
496 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr));
500 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr)
504 error = zfs_dozonecheck(zc->zc_name, cr);
509 * permission to set permissions will be evaluated later in
510 * dsl_deleg_can_allow()
516 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr)
518 return (zfs_secpolicy_write_perms(zc->zc_name,
519 ZFS_DELEG_PERM_ROLLBACK, cr));
523 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr)
532 * Generate the current snapshot name from the given objsetid, then
533 * use that name for the secpolicy/zone checks.
535 cp = strchr(zc->zc_name, '@');
538 error = spa_open(zc->zc_name, &spa, FTAG);
542 dp = spa_get_dsl(spa);
543 rw_enter(&dp->dp_config_rwlock, RW_READER);
544 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
545 rw_exit(&dp->dp_config_rwlock);
546 spa_close(spa, FTAG);
550 dsl_dataset_name(ds, zc->zc_name);
552 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds,
553 ZFS_DELEG_PERM_SEND, cr);
554 dsl_dataset_rele(ds, FTAG);
559 #ifdef HAVE_SMB_SHARE
561 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr)
566 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
567 NO_FOLLOW, NULL, &vp)) != 0)
570 /* Now make sure mntpnt and dataset are ZFS */
572 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
573 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
574 zc->zc_name) != 0)) {
580 return (dsl_deleg_access(zc->zc_name,
581 ZFS_DELEG_PERM_SHARE, cr));
583 #endif /* HAVE_SMB_SHARE */
586 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr)
588 #ifdef HAVE_SMB_SHARE
589 if (!INGLOBALZONE(curproc))
592 if (secpolicy_nfs(cr) == 0) {
595 return (zfs_secpolicy_deleg_share(zc, cr));
599 #endif /* HAVE_SMB_SHARE */
603 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr)
605 #ifdef HAVE_SMB_SHARE
606 if (!INGLOBALZONE(curproc))
609 if (secpolicy_smb(cr) == 0) {
612 return (zfs_secpolicy_deleg_share(zc, cr));
616 #endif /* HAVE_SMB_SHARE */
620 zfs_get_parent(const char *datasetname, char *parent, int parentsize)
625 * Remove the @bla or /bla from the end of the name to get the parent.
627 (void) strncpy(parent, datasetname, parentsize);
628 cp = strrchr(parent, '@');
632 cp = strrchr(parent, '/');
642 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
646 if ((error = zfs_secpolicy_write_perms(name,
647 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
650 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
654 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr)
656 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
660 * Destroying snapshots with delegated permissions requires
661 * descendent mount and destroy permissions.
662 * Reassemble the full filesystem@snap name so dsl_deleg_access()
663 * can do the correct permission check.
665 * Since this routine is used when doing a recursive destroy of snapshots
666 * and destroying snapshots requires descendent permissions, a successfull
667 * check of the top level snapshot applies to snapshots of all descendent
670 * The target snapshot may not exist when doing a recursive destroy.
671 * In this case fallback to permissions of the parent dataset.
674 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, cred_t *cr)
679 dsname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value);
681 error = zfs_secpolicy_destroy_perms(dsname, cr);
683 error = zfs_secpolicy_destroy_perms(zc->zc_name, cr);
690 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
692 char parentname[MAXNAMELEN];
695 if ((error = zfs_secpolicy_write_perms(from,
696 ZFS_DELEG_PERM_RENAME, cr)) != 0)
699 if ((error = zfs_secpolicy_write_perms(from,
700 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
703 if ((error = zfs_get_parent(to, parentname,
704 sizeof (parentname))) != 0)
707 if ((error = zfs_secpolicy_write_perms(parentname,
708 ZFS_DELEG_PERM_CREATE, cr)) != 0)
711 if ((error = zfs_secpolicy_write_perms(parentname,
712 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
719 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr)
721 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));
725 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr)
727 char parentname[MAXNAMELEN];
731 error = zfs_secpolicy_write_perms(zc->zc_name,
732 ZFS_DELEG_PERM_PROMOTE, cr);
736 error = dmu_objset_hold(zc->zc_name, FTAG, &clone);
739 dsl_dataset_t *pclone = NULL;
741 dd = clone->os_dsl_dataset->ds_dir;
743 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER);
744 error = dsl_dataset_hold_obj(dd->dd_pool,
745 dd->dd_phys->dd_origin_obj, FTAG, &pclone);
746 rw_exit(&dd->dd_pool->dp_config_rwlock);
748 dmu_objset_rele(clone, FTAG);
752 error = zfs_secpolicy_write_perms(zc->zc_name,
753 ZFS_DELEG_PERM_MOUNT, cr);
755 dsl_dataset_name(pclone, parentname);
756 dmu_objset_rele(clone, FTAG);
757 dsl_dataset_rele(pclone, FTAG);
759 error = zfs_secpolicy_write_perms(parentname,
760 ZFS_DELEG_PERM_PROMOTE, cr);
766 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr)
770 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
771 ZFS_DELEG_PERM_RECEIVE, cr)) != 0)
774 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
775 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
778 return (zfs_secpolicy_write_perms(zc->zc_name,
779 ZFS_DELEG_PERM_CREATE, cr));
783 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
785 return (zfs_secpolicy_write_perms(name,
786 ZFS_DELEG_PERM_SNAPSHOT, cr));
790 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr)
793 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr));
797 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr)
799 char parentname[MAXNAMELEN];
802 if ((error = zfs_get_parent(zc->zc_name, parentname,
803 sizeof (parentname))) != 0)
806 if (zc->zc_value[0] != '\0') {
807 if ((error = zfs_secpolicy_write_perms(zc->zc_value,
808 ZFS_DELEG_PERM_CLONE, cr)) != 0)
812 if ((error = zfs_secpolicy_write_perms(parentname,
813 ZFS_DELEG_PERM_CREATE, cr)) != 0)
816 error = zfs_secpolicy_write_perms(parentname,
817 ZFS_DELEG_PERM_MOUNT, cr);
823 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires
824 * SYS_CONFIG privilege, which is not available in a local zone.
828 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr)
830 if (secpolicy_sys_config(cr, B_FALSE) != 0)
837 * Policy for object to name lookups.
841 zfs_secpolicy_diff(zfs_cmd_t *zc, cred_t *cr)
845 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0)
848 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr);
853 * Policy for fault injection. Requires all privileges.
857 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr)
859 return (secpolicy_zinject(cr));
863 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr)
865 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
867 if (prop == ZPROP_INVAL) {
868 if (!zfs_prop_user(zc->zc_value))
870 return (zfs_secpolicy_write_perms(zc->zc_name,
871 ZFS_DELEG_PERM_USERPROP, cr));
873 return (zfs_secpolicy_setprop(zc->zc_name, prop,
879 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, cred_t *cr)
881 int err = zfs_secpolicy_read(zc, cr);
885 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
888 if (zc->zc_value[0] == 0) {
890 * They are asking about a posix uid/gid. If it's
891 * themself, allow it.
893 if (zc->zc_objset_type == ZFS_PROP_USERUSED ||
894 zc->zc_objset_type == ZFS_PROP_USERQUOTA) {
895 if (zc->zc_guid == crgetuid(cr))
898 if (groupmember(zc->zc_guid, cr))
903 return (zfs_secpolicy_write_perms(zc->zc_name,
904 userquota_perms[zc->zc_objset_type], cr));
908 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, cred_t *cr)
910 int err = zfs_secpolicy_read(zc, cr);
914 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
917 return (zfs_secpolicy_write_perms(zc->zc_name,
918 userquota_perms[zc->zc_objset_type], cr));
922 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, cred_t *cr)
924 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION,
929 zfs_secpolicy_hold(zfs_cmd_t *zc, cred_t *cr)
931 return (zfs_secpolicy_write_perms(zc->zc_name,
932 ZFS_DELEG_PERM_HOLD, cr));
936 zfs_secpolicy_release(zfs_cmd_t *zc, cred_t *cr)
938 return (zfs_secpolicy_write_perms(zc->zc_name,
939 ZFS_DELEG_PERM_RELEASE, cr));
943 * Policy for allowing temporary snapshots to be taken or released
946 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, cred_t *cr)
949 * A temporary snapshot is the same as a snapshot,
950 * hold, destroy and release all rolled into one.
951 * Delegated diff alone is sufficient that we allow this.
955 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
956 ZFS_DELEG_PERM_DIFF, cr)) == 0)
959 error = zfs_secpolicy_snapshot(zc, cr);
961 error = zfs_secpolicy_hold(zc, cr);
963 error = zfs_secpolicy_release(zc, cr);
965 error = zfs_secpolicy_destroy(zc, cr);
970 * Returns the nvlist as specified by the user in the zfs_cmd_t.
973 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp)
977 nvlist_t *list = NULL;
980 * Read in and unpack the user-supplied nvlist.
985 packed = kmem_alloc(size, KM_SLEEP | KM_NODEBUG);
987 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
989 kmem_free(packed, size);
993 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) {
994 kmem_free(packed, size);
998 kmem_free(packed, size);
1005 fit_error_list(zfs_cmd_t *zc, nvlist_t **errors)
1009 VERIFY(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0);
1011 if (size > zc->zc_nvlist_dst_size) {
1012 nvpair_t *more_errors;
1015 if (zc->zc_nvlist_dst_size < 1024)
1018 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, 0) == 0);
1019 more_errors = nvlist_prev_nvpair(*errors, NULL);
1022 nvpair_t *pair = nvlist_prev_nvpair(*errors,
1024 VERIFY(nvlist_remove_nvpair(*errors, pair) == 0);
1026 VERIFY(nvlist_size(*errors, &size,
1027 NV_ENCODE_NATIVE) == 0);
1028 } while (size > zc->zc_nvlist_dst_size);
1030 VERIFY(nvlist_remove_nvpair(*errors, more_errors) == 0);
1031 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, n) == 0);
1032 ASSERT(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0);
1033 ASSERT(size <= zc->zc_nvlist_dst_size);
1040 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
1042 char *packed = NULL;
1046 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0);
1048 if (size > zc->zc_nvlist_dst_size) {
1051 packed = kmem_alloc(size, KM_SLEEP | KM_NODEBUG);
1052 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
1054 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
1055 size, zc->zc_iflags) != 0)
1057 kmem_free(packed, size);
1060 zc->zc_nvlist_dst_size = size;
1065 get_zfs_sb(const char *dsname, zfs_sb_t **zsbp)
1070 error = dmu_objset_hold(dsname, FTAG, &os);
1073 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1074 dmu_objset_rele(os, FTAG);
1078 mutex_enter(&os->os_user_ptr_lock);
1079 *zsbp = dmu_objset_get_user(os);
1080 if (*zsbp && (*zsbp)->z_sb) {
1081 atomic_inc(&((*zsbp)->z_sb->s_active));
1085 mutex_exit(&os->os_user_ptr_lock);
1086 dmu_objset_rele(os, FTAG);
1091 * Find a zfs_sb_t for a mounted filesystem, or create our own, in which
1092 * case its z_sb will be NULL, and it will be opened as the owner.
1095 zfs_sb_hold(const char *name, void *tag, zfs_sb_t **zsbp, boolean_t writer)
1099 if (get_zfs_sb(name, zsbp) != 0)
1100 error = zfs_sb_create(name, zsbp);
1102 rrw_enter(&(*zsbp)->z_teardown_lock, (writer) ? RW_WRITER :
1104 if ((*zsbp)->z_unmounted) {
1106 * XXX we could probably try again, since the unmounting
1107 * thread should be just about to disassociate the
1108 * objset from the zfsvfs.
1110 rrw_exit(&(*zsbp)->z_teardown_lock, tag);
1118 zfs_sb_rele(zfs_sb_t *zsb, void *tag)
1120 rrw_exit(&zsb->z_teardown_lock, tag);
1123 deactivate_super(zsb->z_sb);
1125 dmu_objset_disown(zsb->z_os, zsb);
1131 zfs_ioc_pool_create(zfs_cmd_t *zc)
1134 nvlist_t *config, *props = NULL;
1135 nvlist_t *rootprops = NULL;
1136 nvlist_t *zplprops = NULL;
1139 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1140 zc->zc_iflags, &config)))
1143 if (zc->zc_nvlist_src_size != 0 && (error =
1144 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1145 zc->zc_iflags, &props))) {
1146 nvlist_free(config);
1151 nvlist_t *nvl = NULL;
1152 uint64_t version = SPA_VERSION;
1154 (void) nvlist_lookup_uint64(props,
1155 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version);
1156 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) {
1158 goto pool_props_bad;
1160 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl);
1162 error = nvlist_dup(nvl, &rootprops, KM_SLEEP);
1164 nvlist_free(config);
1168 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS);
1170 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1171 error = zfs_fill_zplprops_root(version, rootprops,
1174 goto pool_props_bad;
1177 buf = history_str_get(zc);
1179 error = spa_create(zc->zc_name, config, props, buf, zplprops);
1182 * Set the remaining root properties
1184 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name,
1185 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0)
1186 (void) spa_destroy(zc->zc_name);
1189 history_str_free(buf);
1192 nvlist_free(rootprops);
1193 nvlist_free(zplprops);
1194 nvlist_free(config);
1201 zfs_ioc_pool_destroy(zfs_cmd_t *zc)
1204 zfs_log_history(zc);
1205 error = spa_destroy(zc->zc_name);
1207 zvol_remove_minors(zc->zc_name);
1212 zfs_ioc_pool_import(zfs_cmd_t *zc)
1214 nvlist_t *config, *props = NULL;
1218 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1219 zc->zc_iflags, &config)) != 0)
1222 if (zc->zc_nvlist_src_size != 0 && (error =
1223 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1224 zc->zc_iflags, &props))) {
1225 nvlist_free(config);
1229 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
1230 guid != zc->zc_guid)
1233 error = spa_import(zc->zc_name, config, props, zc->zc_cookie);
1235 if (zc->zc_nvlist_dst != 0) {
1238 if ((err = put_nvlist(zc, config)) != 0)
1243 zvol_create_minors(zc->zc_name);
1245 nvlist_free(config);
1254 zfs_ioc_pool_export(zfs_cmd_t *zc)
1257 boolean_t force = (boolean_t)zc->zc_cookie;
1258 boolean_t hardforce = (boolean_t)zc->zc_guid;
1260 zfs_log_history(zc);
1261 error = spa_export(zc->zc_name, NULL, force, hardforce);
1263 zvol_remove_minors(zc->zc_name);
1268 zfs_ioc_pool_configs(zfs_cmd_t *zc)
1273 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
1276 error = put_nvlist(zc, configs);
1278 nvlist_free(configs);
1284 zfs_ioc_pool_stats(zfs_cmd_t *zc)
1290 error = spa_get_stats(zc->zc_name, &config, zc->zc_value,
1291 sizeof (zc->zc_value));
1293 if (config != NULL) {
1294 ret = put_nvlist(zc, config);
1295 nvlist_free(config);
1298 * The config may be present even if 'error' is non-zero.
1299 * In this case we return success, and preserve the real errno
1302 zc->zc_cookie = error;
1311 * Try to import the given pool, returning pool stats as appropriate so that
1312 * user land knows which devices are available and overall pool health.
1315 zfs_ioc_pool_tryimport(zfs_cmd_t *zc)
1317 nvlist_t *tryconfig, *config;
1320 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1321 zc->zc_iflags, &tryconfig)) != 0)
1324 config = spa_tryimport(tryconfig);
1326 nvlist_free(tryconfig);
1331 error = put_nvlist(zc, config);
1332 nvlist_free(config);
1339 * zc_name name of the pool
1340 * zc_cookie scan func (pool_scan_func_t)
1343 zfs_ioc_pool_scan(zfs_cmd_t *zc)
1348 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1351 if (zc->zc_cookie == POOL_SCAN_NONE)
1352 error = spa_scan_stop(spa);
1354 error = spa_scan(spa, zc->zc_cookie);
1356 spa_close(spa, FTAG);
1362 zfs_ioc_pool_freeze(zfs_cmd_t *zc)
1367 error = spa_open(zc->zc_name, &spa, FTAG);
1370 spa_close(spa, FTAG);
1376 zfs_ioc_pool_upgrade(zfs_cmd_t *zc)
1381 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1384 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) {
1385 spa_close(spa, FTAG);
1389 spa_upgrade(spa, zc->zc_cookie);
1390 spa_close(spa, FTAG);
1396 zfs_ioc_pool_get_history(zfs_cmd_t *zc)
1403 if ((size = zc->zc_history_len) == 0)
1406 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1409 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
1410 spa_close(spa, FTAG);
1414 hist_buf = vmem_alloc(size, KM_SLEEP);
1415 if ((error = spa_history_get(spa, &zc->zc_history_offset,
1416 &zc->zc_history_len, hist_buf)) == 0) {
1417 error = ddi_copyout(hist_buf,
1418 (void *)(uintptr_t)zc->zc_history,
1419 zc->zc_history_len, zc->zc_iflags);
1422 spa_close(spa, FTAG);
1423 vmem_free(hist_buf, size);
1428 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
1432 if ((error = dsl_dsobj_to_dsname(zc->zc_name,zc->zc_obj,zc->zc_value)))
1440 * zc_name name of filesystem
1441 * zc_obj object to find
1444 * zc_value name of object
1447 zfs_ioc_obj_to_path(zfs_cmd_t *zc)
1452 /* XXX reading from objset not owned */
1453 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1455 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1456 dmu_objset_rele(os, FTAG);
1459 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value,
1460 sizeof (zc->zc_value));
1461 dmu_objset_rele(os, FTAG);
1468 * zc_name name of filesystem
1469 * zc_obj object to find
1472 * zc_stat stats on object
1473 * zc_value path to object
1476 zfs_ioc_obj_to_stats(zfs_cmd_t *zc)
1481 /* XXX reading from objset not owned */
1482 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1484 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1485 dmu_objset_rele(os, FTAG);
1488 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value,
1489 sizeof (zc->zc_value));
1490 dmu_objset_rele(os, FTAG);
1496 zfs_ioc_vdev_add(zfs_cmd_t *zc)
1500 nvlist_t *config, **l2cache, **spares;
1501 uint_t nl2cache = 0, nspares = 0;
1503 error = spa_open(zc->zc_name, &spa, FTAG);
1507 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1508 zc->zc_iflags, &config);
1509 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
1510 &l2cache, &nl2cache);
1512 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
1516 * A root pool with concatenated devices is not supported.
1517 * Thus, can not add a device to a root pool.
1519 * Intent log device can not be added to a rootpool because
1520 * during mountroot, zil is replayed, a seperated log device
1521 * can not be accessed during the mountroot time.
1523 * l2cache and spare devices are ok to be added to a rootpool.
1525 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) {
1526 nvlist_free(config);
1527 spa_close(spa, FTAG);
1532 error = spa_vdev_add(spa, config);
1533 nvlist_free(config);
1535 spa_close(spa, FTAG);
1541 * zc_name name of the pool
1542 * zc_nvlist_conf nvlist of devices to remove
1543 * zc_cookie to stop the remove?
1546 zfs_ioc_vdev_remove(zfs_cmd_t *zc)
1551 error = spa_open(zc->zc_name, &spa, FTAG);
1554 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE);
1555 spa_close(spa, FTAG);
1560 zfs_ioc_vdev_set_state(zfs_cmd_t *zc)
1564 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
1566 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1568 switch (zc->zc_cookie) {
1569 case VDEV_STATE_ONLINE:
1570 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate);
1573 case VDEV_STATE_OFFLINE:
1574 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj);
1577 case VDEV_STATE_FAULTED:
1578 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1579 zc->zc_obj != VDEV_AUX_EXTERNAL)
1580 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1582 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj);
1585 case VDEV_STATE_DEGRADED:
1586 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1587 zc->zc_obj != VDEV_AUX_EXTERNAL)
1588 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1590 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj);
1596 zc->zc_cookie = newstate;
1597 spa_close(spa, FTAG);
1602 zfs_ioc_vdev_attach(zfs_cmd_t *zc)
1605 int replacing = zc->zc_cookie;
1609 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1612 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1613 zc->zc_iflags, &config)) == 0) {
1614 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
1615 nvlist_free(config);
1618 spa_close(spa, FTAG);
1623 zfs_ioc_vdev_detach(zfs_cmd_t *zc)
1628 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1631 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE);
1633 spa_close(spa, FTAG);
1638 zfs_ioc_vdev_split(zfs_cmd_t *zc)
1641 nvlist_t *config, *props = NULL;
1643 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT);
1645 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1648 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1649 zc->zc_iflags, &config))) {
1650 spa_close(spa, FTAG);
1654 if (zc->zc_nvlist_src_size != 0 && (error =
1655 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1656 zc->zc_iflags, &props))) {
1657 spa_close(spa, FTAG);
1658 nvlist_free(config);
1662 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp);
1664 spa_close(spa, FTAG);
1666 nvlist_free(config);
1673 zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
1676 char *path = zc->zc_value;
1677 uint64_t guid = zc->zc_guid;
1680 error = spa_open(zc->zc_name, &spa, FTAG);
1684 error = spa_vdev_setpath(spa, guid, path);
1685 spa_close(spa, FTAG);
1690 zfs_ioc_vdev_setfru(zfs_cmd_t *zc)
1693 char *fru = zc->zc_value;
1694 uint64_t guid = zc->zc_guid;
1697 error = spa_open(zc->zc_name, &spa, FTAG);
1701 error = spa_vdev_setfru(spa, guid, fru);
1702 spa_close(spa, FTAG);
1707 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os)
1712 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1714 if (zc->zc_nvlist_dst != 0 &&
1715 (error = dsl_prop_get_all(os, &nv)) == 0) {
1716 dmu_objset_stats(os, nv);
1718 * NB: zvol_get_stats() will read the objset contents,
1719 * which we aren't supposed to do with a
1720 * DS_MODE_USER hold, because it could be
1721 * inconsistent. So this is a bit of a workaround...
1722 * XXX reading with out owning
1724 if (!zc->zc_objset_stats.dds_inconsistent) {
1725 if (dmu_objset_type(os) == DMU_OST_ZVOL)
1726 error = zvol_get_stats(os, nv);
1729 error = put_nvlist(zc, nv);
1738 * zc_name name of filesystem
1739 * zc_nvlist_dst_size size of buffer for property nvlist
1742 * zc_objset_stats stats
1743 * zc_nvlist_dst property nvlist
1744 * zc_nvlist_dst_size size of property nvlist
1747 zfs_ioc_objset_stats(zfs_cmd_t *zc)
1749 objset_t *os = NULL;
1752 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)))
1755 error = zfs_ioc_objset_stats_impl(zc, os);
1757 dmu_objset_rele(os, FTAG);
1764 * zc_name name of filesystem
1765 * zc_nvlist_dst_size size of buffer for property nvlist
1768 * zc_nvlist_dst received property nvlist
1769 * zc_nvlist_dst_size size of received property nvlist
1771 * Gets received properties (distinct from local properties on or after
1772 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from
1773 * local property values.
1776 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc)
1778 objset_t *os = NULL;
1782 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)))
1786 * Without this check, we would return local property values if the
1787 * caller has not already received properties on or after
1788 * SPA_VERSION_RECVD_PROPS.
1790 if (!dsl_prop_get_hasrecvd(os)) {
1791 dmu_objset_rele(os, FTAG);
1795 if (zc->zc_nvlist_dst != 0 &&
1796 (error = dsl_prop_get_received(os, &nv)) == 0) {
1797 error = put_nvlist(zc, nv);
1801 dmu_objset_rele(os, FTAG);
1806 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop)
1812 * zfs_get_zplprop() will either find a value or give us
1813 * the default value (if there is one).
1815 if ((error = zfs_get_zplprop(os, prop, &value)) != 0)
1817 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0);
1823 * zc_name name of filesystem
1824 * zc_nvlist_dst_size size of buffer for zpl property nvlist
1827 * zc_nvlist_dst zpl property nvlist
1828 * zc_nvlist_dst_size size of zpl property nvlist
1831 zfs_ioc_objset_zplprops(zfs_cmd_t *zc)
1836 /* XXX reading without owning */
1837 if ((err = dmu_objset_hold(zc->zc_name, FTAG, &os)))
1840 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1843 * NB: nvl_add_zplprop() will read the objset contents,
1844 * which we aren't supposed to do with a DS_MODE_USER
1845 * hold, because it could be inconsistent.
1847 if (zc->zc_nvlist_dst != 0 &&
1848 !zc->zc_objset_stats.dds_inconsistent &&
1849 dmu_objset_type(os) == DMU_OST_ZFS) {
1852 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1853 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 &&
1854 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 &&
1855 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 &&
1856 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0)
1857 err = put_nvlist(zc, nv);
1862 dmu_objset_rele(os, FTAG);
1867 dataset_name_hidden(const char *name)
1870 * Skip over datasets that are not visible in this zone,
1871 * internal datasets (which have a $ in their name), and
1872 * temporary datasets (which have a % in their name).
1874 if (strchr(name, '$') != NULL)
1876 if (strchr(name, '%') != NULL)
1878 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL))
1885 * zc_name name of filesystem
1886 * zc_cookie zap cursor
1887 * zc_nvlist_dst_size size of buffer for property nvlist
1890 * zc_name name of next filesystem
1891 * zc_cookie zap cursor
1892 * zc_objset_stats stats
1893 * zc_nvlist_dst property nvlist
1894 * zc_nvlist_dst_size size of property nvlist
1897 zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
1902 size_t orig_len = strlen(zc->zc_name);
1905 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os))) {
1906 if (error == ENOENT)
1911 p = strrchr(zc->zc_name, '/');
1912 if (p == NULL || p[1] != '\0')
1913 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
1914 p = zc->zc_name + strlen(zc->zc_name);
1917 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0
1918 * but is not declared void because its called by dmu_objset_find().
1920 if (zc->zc_cookie == 0) {
1921 uint64_t cookie = 0;
1922 int len = sizeof (zc->zc_name) - (p - zc->zc_name);
1924 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0)
1925 (void) dmu_objset_prefetch(p, NULL);
1929 error = dmu_dir_list_next(os,
1930 sizeof (zc->zc_name) - (p - zc->zc_name), p,
1931 NULL, &zc->zc_cookie);
1932 if (error == ENOENT)
1934 } while (error == 0 && dataset_name_hidden(zc->zc_name) &&
1935 !(zc->zc_iflags & FKIOCTL));
1936 dmu_objset_rele(os, FTAG);
1939 * If it's an internal dataset (ie. with a '$' in its name),
1940 * don't try to get stats for it, otherwise we'll return ENOENT.
1942 if (error == 0 && strchr(zc->zc_name, '$') == NULL) {
1943 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
1944 if (error == ENOENT) {
1945 /* We lost a race with destroy, get the next one. */
1946 zc->zc_name[orig_len] = '\0';
1955 * zc_name name of filesystem
1956 * zc_cookie zap cursor
1957 * zc_nvlist_dst_size size of buffer for property nvlist
1960 * zc_name name of next snapshot
1961 * zc_objset_stats stats
1962 * zc_nvlist_dst property nvlist
1963 * zc_nvlist_dst_size size of property nvlist
1966 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc)
1972 if (zc->zc_cookie == 0)
1973 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch,
1974 NULL, DS_FIND_SNAPSHOTS);
1976 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
1978 return (error == ENOENT ? ESRCH : error);
1981 * A dataset name of maximum length cannot have any snapshots,
1982 * so exit immediately.
1984 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) {
1985 dmu_objset_rele(os, FTAG);
1989 error = dmu_snapshot_list_next(os,
1990 sizeof (zc->zc_name) - strlen(zc->zc_name),
1991 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie,
1996 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool;
1999 * Since we probably don't have a hold on this snapshot,
2000 * it's possible that the objsetid could have been destroyed
2001 * and reused for a new objset. It's OK if this happens during
2002 * a zfs send operation, since the new createtxg will be
2003 * beyond the range we're interested in.
2005 rw_enter(&dp->dp_config_rwlock, RW_READER);
2006 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds);
2007 rw_exit(&dp->dp_config_rwlock);
2009 if (error == ENOENT) {
2010 /* Racing with destroy, get the next one. */
2011 *strchr(zc->zc_name, '@') = '\0';
2012 dmu_objset_rele(os, FTAG);
2018 error = dmu_objset_from_ds(ds, &ossnap);
2020 error = zfs_ioc_objset_stats_impl(zc, ossnap);
2021 dsl_dataset_rele(ds, FTAG);
2023 } else if (error == ENOENT) {
2027 dmu_objset_rele(os, FTAG);
2028 /* if we failed, undo the @ that we tacked on to zc_name */
2030 *strchr(zc->zc_name, '@') = '\0';
2035 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair)
2037 const char *propname = nvpair_name(pair);
2039 unsigned int vallen;
2042 zfs_userquota_prop_t type;
2048 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2050 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2051 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2057 * A correctly constructed propname is encoded as
2058 * userquota@<rid>-<domain>.
2060 if ((dash = strchr(propname, '-')) == NULL ||
2061 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 ||
2070 err = zfs_sb_hold(dsname, FTAG, &zsb, B_FALSE);
2072 err = zfs_set_userquota(zsb, type, domain, rid, quota);
2073 zfs_sb_rele(zsb, FTAG);
2080 * If the named property is one that has a special function to set its value,
2081 * return 0 on success and a positive error code on failure; otherwise if it is
2082 * not one of the special properties handled by this function, return -1.
2084 * XXX: It would be better for callers of the property interface if we handled
2085 * these special cases in dsl_prop.c (in the dsl layer).
2088 zfs_prop_set_special(const char *dsname, zprop_source_t source,
2091 const char *propname = nvpair_name(pair);
2092 zfs_prop_t prop = zfs_name_to_prop(propname);
2096 if (prop == ZPROP_INVAL) {
2097 if (zfs_prop_userquota(propname))
2098 return (zfs_prop_set_userquota(dsname, pair));
2102 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2104 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2105 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2109 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING)
2112 VERIFY(0 == nvpair_value_uint64(pair, &intval));
2115 case ZFS_PROP_QUOTA:
2116 err = dsl_dir_set_quota(dsname, source, intval);
2118 case ZFS_PROP_REFQUOTA:
2119 err = dsl_dataset_set_quota(dsname, source, intval);
2121 case ZFS_PROP_RESERVATION:
2122 err = dsl_dir_set_reservation(dsname, source, intval);
2124 case ZFS_PROP_REFRESERVATION:
2125 err = dsl_dataset_set_reservation(dsname, source, intval);
2127 case ZFS_PROP_VOLSIZE:
2128 err = zvol_set_volsize(dsname, intval);
2130 case ZFS_PROP_VERSION:
2134 if ((err = zfs_sb_hold(dsname, FTAG, &zsb, B_TRUE)) != 0)
2137 err = zfs_set_version(zsb, intval);
2138 zfs_sb_rele(zsb, FTAG);
2140 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) {
2143 zc = kmem_zalloc(sizeof (zfs_cmd_t),
2144 KM_SLEEP | KM_NODEBUG);
2145 (void) strcpy(zc->zc_name, dsname);
2146 (void) zfs_ioc_userspace_upgrade(zc);
2147 kmem_free(zc, sizeof (zfs_cmd_t));
2160 * This function is best effort. If it fails to set any of the given properties,
2161 * it continues to set as many as it can and returns the first error
2162 * encountered. If the caller provides a non-NULL errlist, it also gives the
2163 * complete list of names of all the properties it failed to set along with the
2164 * corresponding error numbers. The caller is responsible for freeing the
2167 * If every property is set successfully, zero is returned and the list pointed
2168 * at by errlist is NULL.
2171 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl,
2179 nvlist_t *genericnvl;
2183 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2184 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2185 VERIFY(nvlist_alloc(&retrynvl, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2189 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2190 const char *propname = nvpair_name(pair);
2191 zfs_prop_t prop = zfs_name_to_prop(propname);
2194 /* decode the property value */
2196 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2198 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2199 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2204 /* Validate value type */
2205 if (err == 0 && prop == ZPROP_INVAL) {
2206 if (zfs_prop_user(propname)) {
2207 if (nvpair_type(propval) != DATA_TYPE_STRING)
2209 } else if (zfs_prop_userquota(propname)) {
2210 if (nvpair_type(propval) !=
2211 DATA_TYPE_UINT64_ARRAY)
2214 } else if (err == 0) {
2215 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2216 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING)
2218 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) {
2221 VERIFY(nvpair_value_uint64(propval,
2224 switch (zfs_prop_get_type(prop)) {
2225 case PROP_TYPE_NUMBER:
2227 case PROP_TYPE_STRING:
2230 case PROP_TYPE_INDEX:
2231 if (zfs_prop_index_to_string(prop,
2232 intval, &unused) != 0)
2237 "unknown property type");
2244 /* Validate permissions */
2246 err = zfs_check_settable(dsname, pair, CRED());
2249 err = zfs_prop_set_special(dsname, source, pair);
2252 * For better performance we build up a list of
2253 * properties to set in a single transaction.
2255 err = nvlist_add_nvpair(genericnvl, pair);
2256 } else if (err != 0 && nvl != retrynvl) {
2258 * This may be a spurious error caused by
2259 * receiving quota and reservation out of order.
2260 * Try again in a second pass.
2262 err = nvlist_add_nvpair(retrynvl, pair);
2267 VERIFY(nvlist_add_int32(errors, propname, err) == 0);
2270 if (nvl != retrynvl && !nvlist_empty(retrynvl)) {
2275 if (!nvlist_empty(genericnvl) &&
2276 dsl_props_set(dsname, source, genericnvl) != 0) {
2278 * If this fails, we still want to set as many properties as we
2279 * can, so try setting them individually.
2282 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) {
2283 const char *propname = nvpair_name(pair);
2287 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2289 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2290 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2294 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2295 VERIFY(nvpair_value_string(propval,
2297 err = dsl_prop_set(dsname, propname, source, 1,
2298 strlen(strval) + 1, strval);
2300 VERIFY(nvpair_value_uint64(propval,
2302 err = dsl_prop_set(dsname, propname, source, 8,
2307 VERIFY(nvlist_add_int32(errors, propname,
2312 nvlist_free(genericnvl);
2313 nvlist_free(retrynvl);
2315 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
2316 nvlist_free(errors);
2319 VERIFY(nvpair_value_int32(pair, &rv) == 0);
2322 if (errlist == NULL)
2323 nvlist_free(errors);
2331 * Check that all the properties are valid user properties.
2334 zfs_check_userprops(char *fsname, nvlist_t *nvl)
2336 nvpair_t *pair = NULL;
2339 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2340 const char *propname = nvpair_name(pair);
2343 if (!zfs_prop_user(propname) ||
2344 nvpair_type(pair) != DATA_TYPE_STRING)
2347 if ((error = zfs_secpolicy_write_perms(fsname,
2348 ZFS_DELEG_PERM_USERPROP, CRED())))
2351 if (strlen(propname) >= ZAP_MAXNAMELEN)
2352 return (ENAMETOOLONG);
2354 VERIFY(nvpair_value_string(pair, &valstr) == 0);
2355 if (strlen(valstr) >= ZAP_MAXVALUELEN)
2362 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops)
2366 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2369 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) {
2370 if (nvlist_exists(skipped, nvpair_name(pair)))
2373 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0);
2378 clear_received_props(objset_t *os, const char *fs, nvlist_t *props,
2382 nvlist_t *cleared_props = NULL;
2383 props_skip(props, skipped, &cleared_props);
2384 if (!nvlist_empty(cleared_props)) {
2386 * Acts on local properties until the dataset has received
2387 * properties at least once on or after SPA_VERSION_RECVD_PROPS.
2389 zprop_source_t flags = (ZPROP_SRC_NONE |
2390 (dsl_prop_get_hasrecvd(os) ? ZPROP_SRC_RECEIVED : 0));
2391 err = zfs_set_prop_nvlist(fs, flags, cleared_props, NULL);
2393 nvlist_free(cleared_props);
2399 * zc_name name of filesystem
2400 * zc_value name of property to set
2401 * zc_nvlist_src{_size} nvlist of properties to apply
2402 * zc_cookie received properties flag
2405 * zc_nvlist_dst{_size} error for each unapplied received property
2408 zfs_ioc_set_prop(zfs_cmd_t *zc)
2411 boolean_t received = zc->zc_cookie;
2412 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED :
2414 nvlist_t *errors = NULL;
2417 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2418 zc->zc_iflags, &nvl)) != 0)
2422 nvlist_t *origprops;
2425 if (dmu_objset_hold(zc->zc_name, FTAG, &os) == 0) {
2426 if (dsl_prop_get_received(os, &origprops) == 0) {
2427 (void) clear_received_props(os,
2428 zc->zc_name, origprops, nvl);
2429 nvlist_free(origprops);
2432 dsl_prop_set_hasrecvd(os);
2433 dmu_objset_rele(os, FTAG);
2437 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, &errors);
2439 if (zc->zc_nvlist_dst != 0 && errors != NULL) {
2440 (void) put_nvlist(zc, errors);
2443 nvlist_free(errors);
2450 * zc_name name of filesystem
2451 * zc_value name of property to inherit
2452 * zc_cookie revert to received value if TRUE
2457 zfs_ioc_inherit_prop(zfs_cmd_t *zc)
2459 const char *propname = zc->zc_value;
2460 zfs_prop_t prop = zfs_name_to_prop(propname);
2461 boolean_t received = zc->zc_cookie;
2462 zprop_source_t source = (received
2463 ? ZPROP_SRC_NONE /* revert to received value, if any */
2464 : ZPROP_SRC_INHERITED); /* explicitly inherit */
2473 * zfs_prop_set_special() expects properties in the form of an
2474 * nvpair with type info.
2476 if (prop == ZPROP_INVAL) {
2477 if (!zfs_prop_user(propname))
2480 type = PROP_TYPE_STRING;
2481 } else if (prop == ZFS_PROP_VOLSIZE ||
2482 prop == ZFS_PROP_VERSION) {
2485 type = zfs_prop_get_type(prop);
2488 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2491 case PROP_TYPE_STRING:
2492 VERIFY(0 == nvlist_add_string(dummy, propname, ""));
2494 case PROP_TYPE_NUMBER:
2495 case PROP_TYPE_INDEX:
2496 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0));
2503 pair = nvlist_next_nvpair(dummy, NULL);
2504 err = zfs_prop_set_special(zc->zc_name, source, pair);
2507 return (err); /* special property already handled */
2510 * Only check this in the non-received case. We want to allow
2511 * 'inherit -S' to revert non-inheritable properties like quota
2512 * and reservation to the received or default values even though
2513 * they are not considered inheritable.
2515 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop))
2519 /* the property name has been validated by zfs_secpolicy_inherit() */
2520 return (dsl_prop_set(zc->zc_name, zc->zc_value, source, 0, 0, NULL));
2524 zfs_ioc_pool_set_props(zfs_cmd_t *zc)
2531 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2532 zc->zc_iflags, &props)))
2536 * If the only property is the configfile, then just do a spa_lookup()
2537 * to handle the faulted case.
2539 pair = nvlist_next_nvpair(props, NULL);
2540 if (pair != NULL && strcmp(nvpair_name(pair),
2541 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 &&
2542 nvlist_next_nvpair(props, pair) == NULL) {
2543 mutex_enter(&spa_namespace_lock);
2544 if ((spa = spa_lookup(zc->zc_name)) != NULL) {
2545 spa_configfile_set(spa, props, B_FALSE);
2546 spa_config_sync(spa, B_FALSE, B_TRUE);
2548 mutex_exit(&spa_namespace_lock);
2555 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2560 error = spa_prop_set(spa, props);
2563 spa_close(spa, FTAG);
2569 zfs_ioc_pool_get_props(zfs_cmd_t *zc)
2573 nvlist_t *nvp = NULL;
2575 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2577 * If the pool is faulted, there may be properties we can still
2578 * get (such as altroot and cachefile), so attempt to get them
2581 mutex_enter(&spa_namespace_lock);
2582 if ((spa = spa_lookup(zc->zc_name)) != NULL)
2583 error = spa_prop_get(spa, &nvp);
2584 mutex_exit(&spa_namespace_lock);
2586 error = spa_prop_get(spa, &nvp);
2587 spa_close(spa, FTAG);
2590 if (error == 0 && zc->zc_nvlist_dst != 0)
2591 error = put_nvlist(zc, nvp);
2601 * zc_name name of volume
2606 zfs_ioc_create_minor(zfs_cmd_t *zc)
2608 return (zvol_create_minor(zc->zc_name));
2613 * zc_name name of volume
2618 zfs_ioc_remove_minor(zfs_cmd_t *zc)
2620 return (zvol_remove_minor(zc->zc_name));
2625 * zc_name name of filesystem
2626 * zc_nvlist_src{_size} nvlist of delegated permissions
2627 * zc_perm_action allow/unallow flag
2632 zfs_ioc_set_fsacl(zfs_cmd_t *zc)
2635 nvlist_t *fsaclnv = NULL;
2637 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2638 zc->zc_iflags, &fsaclnv)) != 0)
2642 * Verify nvlist is constructed correctly
2644 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
2645 nvlist_free(fsaclnv);
2650 * If we don't have PRIV_SYS_MOUNT, then validate
2651 * that user is allowed to hand out each permission in
2655 error = secpolicy_zfs(CRED());
2657 if (zc->zc_perm_action == B_FALSE) {
2658 error = dsl_deleg_can_allow(zc->zc_name,
2661 error = dsl_deleg_can_unallow(zc->zc_name,
2667 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action);
2669 nvlist_free(fsaclnv);
2675 * zc_name name of filesystem
2678 * zc_nvlist_src{_size} nvlist of delegated permissions
2681 zfs_ioc_get_fsacl(zfs_cmd_t *zc)
2686 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) {
2687 error = put_nvlist(zc, nvp);
2696 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
2698 zfs_creat_t *zct = arg;
2700 zfs_create_fs(os, cr, zct->zct_zplprops, tx);
2703 #define ZFS_PROP_UNDEFINED ((uint64_t)-1)
2707 * createprops list of properties requested by creator
2708 * default_zplver zpl version to use if unspecified in createprops
2709 * fuids_ok fuids allowed in this version of the spa?
2710 * os parent objset pointer (NULL if root fs)
2713 * zplprops values for the zplprops we attach to the master node object
2714 * is_ci true if requested file system will be purely case-insensitive
2716 * Determine the settings for utf8only, normalization and
2717 * casesensitivity. Specific values may have been requested by the
2718 * creator and/or we can inherit values from the parent dataset. If
2719 * the file system is of too early a vintage, a creator can not
2720 * request settings for these properties, even if the requested
2721 * setting is the default value. We don't actually want to create dsl
2722 * properties for these, so remove them from the source nvlist after
2726 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver,
2727 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops,
2728 nvlist_t *zplprops, boolean_t *is_ci)
2730 uint64_t sense = ZFS_PROP_UNDEFINED;
2731 uint64_t norm = ZFS_PROP_UNDEFINED;
2732 uint64_t u8 = ZFS_PROP_UNDEFINED;
2734 ASSERT(zplprops != NULL);
2737 * Pull out creator prop choices, if any.
2740 (void) nvlist_lookup_uint64(createprops,
2741 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver);
2742 (void) nvlist_lookup_uint64(createprops,
2743 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm);
2744 (void) nvlist_remove_all(createprops,
2745 zfs_prop_to_name(ZFS_PROP_NORMALIZE));
2746 (void) nvlist_lookup_uint64(createprops,
2747 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8);
2748 (void) nvlist_remove_all(createprops,
2749 zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
2750 (void) nvlist_lookup_uint64(createprops,
2751 zfs_prop_to_name(ZFS_PROP_CASE), &sense);
2752 (void) nvlist_remove_all(createprops,
2753 zfs_prop_to_name(ZFS_PROP_CASE));
2757 * If the zpl version requested is whacky or the file system
2758 * or pool is version is too "young" to support normalization
2759 * and the creator tried to set a value for one of the props,
2762 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) ||
2763 (zplver >= ZPL_VERSION_FUID && !fuids_ok) ||
2764 (zplver >= ZPL_VERSION_SA && !sa_ok) ||
2765 (zplver < ZPL_VERSION_NORMALIZATION &&
2766 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
2767 sense != ZFS_PROP_UNDEFINED)))
2771 * Put the version in the zplprops
2773 VERIFY(nvlist_add_uint64(zplprops,
2774 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
2776 if (norm == ZFS_PROP_UNDEFINED)
2777 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0);
2778 VERIFY(nvlist_add_uint64(zplprops,
2779 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
2782 * If we're normalizing, names must always be valid UTF-8 strings.
2786 if (u8 == ZFS_PROP_UNDEFINED)
2787 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0);
2788 VERIFY(nvlist_add_uint64(zplprops,
2789 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
2791 if (sense == ZFS_PROP_UNDEFINED)
2792 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0);
2793 VERIFY(nvlist_add_uint64(zplprops,
2794 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
2797 *is_ci = (sense == ZFS_CASE_INSENSITIVE);
2803 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
2804 nvlist_t *zplprops, boolean_t *is_ci)
2806 boolean_t fuids_ok, sa_ok;
2807 uint64_t zplver = ZPL_VERSION;
2808 objset_t *os = NULL;
2809 char parentname[MAXNAMELEN];
2815 (void) strlcpy(parentname, dataset, sizeof (parentname));
2816 cp = strrchr(parentname, '/');
2820 if ((error = spa_open(dataset, &spa, FTAG)) != 0)
2823 spa_vers = spa_version(spa);
2824 spa_close(spa, FTAG);
2826 zplver = zfs_zpl_version_map(spa_vers);
2827 fuids_ok = (zplver >= ZPL_VERSION_FUID);
2828 sa_ok = (zplver >= ZPL_VERSION_SA);
2831 * Open parent object set so we can inherit zplprop values.
2833 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0)
2836 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops,
2838 dmu_objset_rele(os, FTAG);
2843 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops,
2844 nvlist_t *zplprops, boolean_t *is_ci)
2848 uint64_t zplver = ZPL_VERSION;
2851 zplver = zfs_zpl_version_map(spa_vers);
2852 fuids_ok = (zplver >= ZPL_VERSION_FUID);
2853 sa_ok = (zplver >= ZPL_VERSION_SA);
2855 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok,
2856 createprops, zplprops, is_ci);
2862 * zc_objset_type type of objset to create (fs vs zvol)
2863 * zc_name name of new objset
2864 * zc_value name of snapshot to clone from (may be empty)
2865 * zc_nvlist_src{_size} nvlist of properties to apply
2870 zfs_ioc_create(zfs_cmd_t *zc)
2875 nvlist_t *nvprops = NULL;
2876 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
2877 dmu_objset_type_t type = zc->zc_objset_type;
2882 cbfunc = zfs_create_cb;
2886 cbfunc = zvol_create_cb;
2893 if (strchr(zc->zc_name, '@') ||
2894 strchr(zc->zc_name, '%'))
2897 if (zc->zc_nvlist_src != 0 &&
2898 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2899 zc->zc_iflags, &nvprops)) != 0)
2902 zct.zct_zplprops = NULL;
2903 zct.zct_props = nvprops;
2905 if (zc->zc_value[0] != '\0') {
2907 * We're creating a clone of an existing snapshot.
2909 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
2910 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) {
2911 nvlist_free(nvprops);
2915 error = dmu_objset_hold(zc->zc_value, FTAG, &clone);
2917 nvlist_free(nvprops);
2921 error = dmu_objset_clone(zc->zc_name, dmu_objset_ds(clone), 0);
2922 dmu_objset_rele(clone, FTAG);
2924 nvlist_free(nvprops);
2928 boolean_t is_insensitive = B_FALSE;
2930 if (cbfunc == NULL) {
2931 nvlist_free(nvprops);
2935 if (type == DMU_OST_ZVOL) {
2936 uint64_t volsize, volblocksize;
2938 if (nvprops == NULL ||
2939 nvlist_lookup_uint64(nvprops,
2940 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
2942 nvlist_free(nvprops);
2946 if ((error = nvlist_lookup_uint64(nvprops,
2947 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
2948 &volblocksize)) != 0 && error != ENOENT) {
2949 nvlist_free(nvprops);
2954 volblocksize = zfs_prop_default_numeric(
2955 ZFS_PROP_VOLBLOCKSIZE);
2957 if ((error = zvol_check_volblocksize(
2958 volblocksize)) != 0 ||
2959 (error = zvol_check_volsize(volsize,
2960 volblocksize)) != 0) {
2961 nvlist_free(nvprops);
2964 } else if (type == DMU_OST_ZFS) {
2968 * We have to have normalization and
2969 * case-folding flags correct when we do the
2970 * file system creation, so go figure them out
2973 VERIFY(nvlist_alloc(&zct.zct_zplprops,
2974 NV_UNIQUE_NAME, KM_SLEEP) == 0);
2975 error = zfs_fill_zplprops(zc->zc_name, nvprops,
2976 zct.zct_zplprops, &is_insensitive);
2978 nvlist_free(nvprops);
2979 nvlist_free(zct.zct_zplprops);
2983 error = dmu_objset_create(zc->zc_name, type,
2984 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
2985 nvlist_free(zct.zct_zplprops);
2989 * It would be nice to do this atomically.
2992 error = zfs_set_prop_nvlist(zc->zc_name, ZPROP_SRC_LOCAL,
2995 (void) dmu_objset_destroy(zc->zc_name, B_FALSE);
2997 nvlist_free(nvprops);
3003 * zc_name name of filesystem
3004 * zc_value short name of snapshot
3005 * zc_cookie recursive flag
3006 * zc_nvlist_src[_size] property list
3009 * zc_value short snapname (i.e. part after the '@')
3012 zfs_ioc_snapshot(zfs_cmd_t *zc)
3014 nvlist_t *nvprops = NULL;
3016 boolean_t recursive = zc->zc_cookie;
3018 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
3021 if (zc->zc_nvlist_src != 0 &&
3022 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
3023 zc->zc_iflags, &nvprops)) != 0)
3026 error = zfs_check_userprops(zc->zc_name, nvprops);
3030 if (!nvlist_empty(nvprops) &&
3031 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) {
3036 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, NULL,
3037 nvprops, recursive, B_FALSE, -1);
3040 nvlist_free(nvprops);
3046 * name dataset name, or when 'arg == NULL' the full snapshot name
3047 * arg short snapshot name (i.e. part after the '@')
3050 zfs_unmount_snap(const char *name, void *arg)
3052 zfs_sb_t *zsb = NULL;
3060 dsname = strdup(name);
3061 snapname = strdup(arg);
3063 ptr = strchr(name, '@');
3065 dsname = strdup(name);
3066 dsname[ptr - name] = '\0';
3067 snapname = strdup(ptr + 1);
3073 fullname = kmem_asprintf("%s@%s", dsname, snapname);
3075 error = zfs_sb_hold(dsname, FTAG, &zsb, B_FALSE);
3077 error = zfsctl_unmount_snapshot(zsb, fullname, MNT_FORCE);
3078 zfs_sb_rele(zsb, FTAG);
3080 /* Allow ENOENT for consistency with upstream */
3081 if (error == ENOENT)
3094 * zc_name name of filesystem
3095 * zc_value short name of snapshot
3096 * zc_defer_destroy mark for deferred destroy
3101 zfs_ioc_destroy_snaps(zfs_cmd_t *zc)
3105 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
3107 err = dmu_objset_find(zc->zc_name,
3108 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN);
3111 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value,
3112 zc->zc_defer_destroy));
3117 * zc_name name of dataset to destroy
3118 * zc_objset_type type of objset
3119 * zc_defer_destroy mark for deferred destroy
3124 zfs_ioc_destroy(zfs_cmd_t *zc)
3127 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) {
3128 err = zfs_unmount_snap(zc->zc_name, NULL);
3133 err = dmu_objset_destroy(zc->zc_name, zc->zc_defer_destroy);
3134 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0)
3135 (void) zvol_remove_minor(zc->zc_name);
3141 * zc_name name of dataset to rollback (to most recent snapshot)
3146 zfs_ioc_rollback(zfs_cmd_t *zc)
3148 dsl_dataset_t *ds, *clone;
3153 error = dsl_dataset_hold(zc->zc_name, FTAG, &ds);
3157 /* must not be a snapshot */
3158 if (dsl_dataset_is_snapshot(ds)) {
3159 dsl_dataset_rele(ds, FTAG);
3163 /* must have a most recent snapshot */
3164 if (ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) {
3165 dsl_dataset_rele(ds, FTAG);
3170 * Create clone of most recent snapshot.
3172 clone_name = kmem_asprintf("%s/%%rollback", zc->zc_name);
3173 error = dmu_objset_clone(clone_name, ds->ds_prev, DS_FLAG_INCONSISTENT);
3177 error = dsl_dataset_own(clone_name, B_TRUE, FTAG, &clone);
3184 if (get_zfs_sb(zc->zc_name, &zsb) == 0) {
3185 error = zfs_suspend_fs(zsb);
3189 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) {
3190 error = dsl_dataset_clone_swap(clone, ds,
3192 dsl_dataset_disown(ds, FTAG);
3197 resume_err = zfs_resume_fs(zsb, zc->zc_name);
3198 error = error ? error : resume_err;
3200 deactivate_super(zsb->z_sb);
3202 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) {
3203 error = dsl_dataset_clone_swap(clone, ds, B_TRUE);
3204 dsl_dataset_disown(ds, FTAG);
3212 * Destroy clone (which also closes it).
3214 (void) dsl_dataset_destroy(clone, FTAG, B_FALSE);
3217 strfree(clone_name);
3219 dsl_dataset_rele(ds, FTAG);
3225 * zc_name old name of dataset
3226 * zc_value new name of dataset
3227 * zc_cookie recursive flag (only valid for snapshots)
3232 zfs_ioc_rename(zfs_cmd_t *zc)
3234 boolean_t recursive = zc->zc_cookie & 1;
3237 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
3238 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3239 strchr(zc->zc_value, '%'))
3243 * Unmount snapshot unless we're doing a recursive rename,
3244 * in which case the dataset code figures out which snapshots
3247 if (!recursive && strchr(zc->zc_name, '@') != NULL &&
3248 zc->zc_objset_type == DMU_OST_ZFS) {
3249 err = zfs_unmount_snap(zc->zc_name, NULL);
3254 err = dmu_objset_rename(zc->zc_name, zc->zc_value, recursive);
3255 if ((err == 0) && (zc->zc_objset_type == DMU_OST_ZVOL)) {
3256 (void) zvol_remove_minor(zc->zc_name);
3257 (void) zvol_create_minor(zc->zc_value);
3264 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr)
3266 const char *propname = nvpair_name(pair);
3267 boolean_t issnap = (strchr(dsname, '@') != NULL);
3268 zfs_prop_t prop = zfs_name_to_prop(propname);
3272 if (prop == ZPROP_INVAL) {
3273 if (zfs_prop_user(propname)) {
3274 if ((err = zfs_secpolicy_write_perms(dsname,
3275 ZFS_DELEG_PERM_USERPROP, cr)))
3280 if (!issnap && zfs_prop_userquota(propname)) {
3281 const char *perm = NULL;
3282 const char *uq_prefix =
3283 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA];
3284 const char *gq_prefix =
3285 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA];
3287 if (strncmp(propname, uq_prefix,
3288 strlen(uq_prefix)) == 0) {
3289 perm = ZFS_DELEG_PERM_USERQUOTA;
3290 } else if (strncmp(propname, gq_prefix,
3291 strlen(gq_prefix)) == 0) {
3292 perm = ZFS_DELEG_PERM_GROUPQUOTA;
3294 /* USERUSED and GROUPUSED are read-only */
3298 if ((err = zfs_secpolicy_write_perms(dsname, perm, cr)))
3309 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
3311 * dsl_prop_get_all_impl() returns properties in this
3315 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
3316 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3321 * Check that this value is valid for this pool version
3324 case ZFS_PROP_COMPRESSION:
3326 * If the user specified gzip compression, make sure
3327 * the SPA supports it. We ignore any errors here since
3328 * we'll catch them later.
3330 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3331 nvpair_value_uint64(pair, &intval) == 0) {
3332 if (intval >= ZIO_COMPRESS_GZIP_1 &&
3333 intval <= ZIO_COMPRESS_GZIP_9 &&
3334 zfs_earlier_version(dsname,
3335 SPA_VERSION_GZIP_COMPRESSION)) {
3339 if (intval == ZIO_COMPRESS_ZLE &&
3340 zfs_earlier_version(dsname,
3341 SPA_VERSION_ZLE_COMPRESSION))
3345 * If this is a bootable dataset then
3346 * verify that the compression algorithm
3347 * is supported for booting. We must return
3348 * something other than ENOTSUP since it
3349 * implies a downrev pool version.
3351 if (zfs_is_bootfs(dsname) &&
3352 !BOOTFS_COMPRESS_VALID(intval)) {
3358 case ZFS_PROP_COPIES:
3359 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS))
3363 case ZFS_PROP_DEDUP:
3364 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP))
3368 case ZFS_PROP_SHARESMB:
3369 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID))
3373 case ZFS_PROP_ACLINHERIT:
3374 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3375 nvpair_value_uint64(pair, &intval) == 0) {
3376 if (intval == ZFS_ACL_PASSTHROUGH_X &&
3377 zfs_earlier_version(dsname,
3378 SPA_VERSION_PASSTHROUGH_X))
3386 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED()));
3390 * Removes properties from the given props list that fail permission checks
3391 * needed to clear them and to restore them in case of a receive error. For each
3392 * property, make sure we have both set and inherit permissions.
3394 * Returns the first error encountered if any permission checks fail. If the
3395 * caller provides a non-NULL errlist, it also gives the complete list of names
3396 * of all the properties that failed a permission check along with the
3397 * corresponding error numbers. The caller is responsible for freeing the
3400 * If every property checks out successfully, zero is returned and the list
3401 * pointed at by errlist is NULL.
3404 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist)
3407 nvpair_t *pair, *next_pair;
3414 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
3416 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
3417 (void) strcpy(zc->zc_name, dataset);
3418 pair = nvlist_next_nvpair(props, NULL);
3419 while (pair != NULL) {
3420 next_pair = nvlist_next_nvpair(props, pair);
3422 (void) strcpy(zc->zc_value, nvpair_name(pair));
3423 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 ||
3424 (err = zfs_secpolicy_inherit(zc, CRED())) != 0) {
3425 VERIFY(nvlist_remove_nvpair(props, pair) == 0);
3426 VERIFY(nvlist_add_int32(errors,
3427 zc->zc_value, err) == 0);
3431 kmem_free(zc, sizeof (zfs_cmd_t));
3433 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
3434 nvlist_free(errors);
3437 VERIFY(nvpair_value_int32(pair, &rv) == 0);
3440 if (errlist == NULL)
3441 nvlist_free(errors);
3449 propval_equals(nvpair_t *p1, nvpair_t *p2)
3451 if (nvpair_type(p1) == DATA_TYPE_NVLIST) {
3452 /* dsl_prop_get_all_impl() format */
3454 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0);
3455 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3459 if (nvpair_type(p2) == DATA_TYPE_NVLIST) {
3461 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0);
3462 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3466 if (nvpair_type(p1) != nvpair_type(p2))
3469 if (nvpair_type(p1) == DATA_TYPE_STRING) {
3470 char *valstr1, *valstr2;
3472 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0);
3473 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0);
3474 return (strcmp(valstr1, valstr2) == 0);
3476 uint64_t intval1, intval2;
3478 VERIFY(nvpair_value_uint64(p1, &intval1) == 0);
3479 VERIFY(nvpair_value_uint64(p2, &intval2) == 0);
3480 return (intval1 == intval2);
3485 * Remove properties from props if they are not going to change (as determined
3486 * by comparison with origprops). Remove them from origprops as well, since we
3487 * do not need to clear or restore properties that won't change.
3490 props_reduce(nvlist_t *props, nvlist_t *origprops)
3492 nvpair_t *pair, *next_pair;
3494 if (origprops == NULL)
3495 return; /* all props need to be received */
3497 pair = nvlist_next_nvpair(props, NULL);
3498 while (pair != NULL) {
3499 const char *propname = nvpair_name(pair);
3502 next_pair = nvlist_next_nvpair(props, pair);
3504 if ((nvlist_lookup_nvpair(origprops, propname,
3505 &match) != 0) || !propval_equals(pair, match))
3506 goto next; /* need to set received value */
3508 /* don't clear the existing received value */
3509 (void) nvlist_remove_nvpair(origprops, match);
3510 /* don't bother receiving the property */
3511 (void) nvlist_remove_nvpair(props, pair);
3518 static boolean_t zfs_ioc_recv_inject_err;
3523 * zc_name name of containing filesystem
3524 * zc_nvlist_src{_size} nvlist of properties to apply
3525 * zc_value name of snapshot to create
3526 * zc_string name of clone origin (if DRR_FLAG_CLONE)
3527 * zc_cookie file descriptor to recv from
3528 * zc_begin_record the BEGIN record of the stream (not byteswapped)
3529 * zc_guid force flag
3530 * zc_cleanup_fd cleanup-on-exit file descriptor
3531 * zc_action_handle handle for this guid/ds mapping (or zero on first call)
3534 * zc_cookie number of bytes read
3535 * zc_nvlist_dst{_size} error for each unapplied received property
3536 * zc_obj zprop_errflags_t
3537 * zc_action_handle handle for this guid/ds mapping
3540 zfs_ioc_recv(zfs_cmd_t *zc)
3544 dmu_recv_cookie_t drc;
3545 boolean_t force = (boolean_t)zc->zc_guid;
3548 int props_error = 0;
3551 nvlist_t *props = NULL; /* sent properties */
3552 nvlist_t *origprops = NULL; /* existing properties */
3553 objset_t *origin = NULL;
3555 char tofs[ZFS_MAXNAMELEN];
3556 boolean_t first_recvd_props = B_FALSE;
3558 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3559 strchr(zc->zc_value, '@') == NULL ||
3560 strchr(zc->zc_value, '%'))
3563 (void) strcpy(tofs, zc->zc_value);
3564 tosnap = strchr(tofs, '@');
3567 if (zc->zc_nvlist_src != 0 &&
3568 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
3569 zc->zc_iflags, &props)) != 0)
3579 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
3581 if (props && dmu_objset_hold(tofs, FTAG, &os) == 0) {
3582 if ((spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS) &&
3583 !dsl_prop_get_hasrecvd(os)) {
3584 first_recvd_props = B_TRUE;
3588 * If new received properties are supplied, they are to
3589 * completely replace the existing received properties, so stash
3590 * away the existing ones.
3592 if (dsl_prop_get_received(os, &origprops) == 0) {
3593 nvlist_t *errlist = NULL;
3595 * Don't bother writing a property if its value won't
3596 * change (and avoid the unnecessary security checks).
3598 * The first receive after SPA_VERSION_RECVD_PROPS is a
3599 * special case where we blow away all local properties
3602 if (!first_recvd_props)
3603 props_reduce(props, origprops);
3604 if (zfs_check_clearable(tofs, origprops,
3606 (void) nvlist_merge(errors, errlist, 0);
3607 nvlist_free(errlist);
3610 dmu_objset_rele(os, FTAG);
3613 if (zc->zc_string[0]) {
3614 error = dmu_objset_hold(zc->zc_string, FTAG, &origin);
3619 error = dmu_recv_begin(tofs, tosnap, zc->zc_top_ds,
3620 &zc->zc_begin_record, force, origin, &drc);
3622 dmu_objset_rele(origin, FTAG);
3627 * Set properties before we receive the stream so that they are applied
3628 * to the new data. Note that we must call dmu_recv_stream() if
3629 * dmu_recv_begin() succeeds.
3634 if (dmu_objset_from_ds(drc.drc_logical_ds, &os) == 0) {
3635 if (drc.drc_newfs) {
3636 if (spa_version(os->os_spa) >=
3637 SPA_VERSION_RECVD_PROPS)
3638 first_recvd_props = B_TRUE;
3639 } else if (origprops != NULL) {
3640 if (clear_received_props(os, tofs, origprops,
3641 first_recvd_props ? NULL : props) != 0)
3642 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3644 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3646 dsl_prop_set_hasrecvd(os);
3647 } else if (!drc.drc_newfs) {
3648 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3651 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
3653 (void) nvlist_merge(errors, errlist, 0);
3654 nvlist_free(errlist);
3657 if (fit_error_list(zc, &errors) != 0 || put_nvlist(zc, errors) != 0) {
3659 * Caller made zc->zc_nvlist_dst less than the minimum expected
3660 * size or supplied an invalid address.
3662 props_error = EINVAL;
3666 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd,
3667 &zc->zc_action_handle);
3670 zfs_sb_t *zsb = NULL;
3672 if (get_zfs_sb(tofs, &zsb) == 0) {
3676 error = zfs_suspend_fs(zsb);
3678 * If the suspend fails, then the recv_end will
3679 * likely also fail, and clean up after itself.
3681 end_err = dmu_recv_end(&drc);
3683 error = zfs_resume_fs(zsb, tofs);
3684 error = error ? error : end_err;
3685 deactivate_super(zsb->z_sb);
3687 error = dmu_recv_end(&drc);
3691 zc->zc_cookie = off - fp->f_offset;
3692 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
3696 if (zfs_ioc_recv_inject_err) {
3697 zfs_ioc_recv_inject_err = B_FALSE;
3702 * On error, restore the original props.
3704 if (error && props) {
3705 if (dmu_objset_hold(tofs, FTAG, &os) == 0) {
3706 if (clear_received_props(os, tofs, props, NULL) != 0) {
3708 * We failed to clear the received properties.
3709 * Since we may have left a $recvd value on the
3710 * system, we can't clear the $hasrecvd flag.
3712 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3713 } else if (first_recvd_props) {
3714 dsl_prop_unset_hasrecvd(os);
3716 dmu_objset_rele(os, FTAG);
3717 } else if (!drc.drc_newfs) {
3718 /* We failed to clear the received properties. */
3719 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3722 if (origprops == NULL && !drc.drc_newfs) {
3723 /* We failed to stash the original properties. */
3724 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3728 * dsl_props_set() will not convert RECEIVED to LOCAL on or
3729 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL
3730 * explictly if we're restoring local properties cleared in the
3731 * first new-style receive.
3733 if (origprops != NULL &&
3734 zfs_set_prop_nvlist(tofs, (first_recvd_props ?
3735 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED),
3736 origprops, NULL) != 0) {
3738 * We stashed the original properties but failed to
3741 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3746 nvlist_free(origprops);
3747 nvlist_free(errors);
3751 error = props_error;
3758 * zc_name name of snapshot to send
3759 * zc_cookie file descriptor to send stream to
3760 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj)
3761 * zc_sendobj objsetid of snapshot to send
3762 * zc_fromobj objsetid of incremental fromsnap (may be zero)
3767 zfs_ioc_send(zfs_cmd_t *zc)
3769 objset_t *fromsnap = NULL;
3775 dsl_dataset_t *dsfrom = NULL;
3779 error = spa_open(zc->zc_name, &spa, FTAG);
3783 dp = spa_get_dsl(spa);
3784 rw_enter(&dp->dp_config_rwlock, RW_READER);
3785 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
3786 rw_exit(&dp->dp_config_rwlock);
3788 spa_close(spa, FTAG);
3792 error = dmu_objset_from_ds(ds, &tosnap);
3794 dsl_dataset_rele(ds, FTAG);
3795 spa_close(spa, FTAG);
3799 if (zc->zc_fromobj != 0) {
3800 rw_enter(&dp->dp_config_rwlock, RW_READER);
3801 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, FTAG, &dsfrom);
3802 rw_exit(&dp->dp_config_rwlock);
3803 spa_close(spa, FTAG);
3805 dsl_dataset_rele(ds, FTAG);
3808 error = dmu_objset_from_ds(dsfrom, &fromsnap);
3810 dsl_dataset_rele(dsfrom, FTAG);
3811 dsl_dataset_rele(ds, FTAG);
3815 spa_close(spa, FTAG);
3818 fp = getf(zc->zc_cookie);
3820 dsl_dataset_rele(ds, FTAG);
3822 dsl_dataset_rele(dsfrom, FTAG);
3827 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off);
3829 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
3831 releasef(zc->zc_cookie);
3833 dsl_dataset_rele(dsfrom, FTAG);
3834 dsl_dataset_rele(ds, FTAG);
3839 zfs_ioc_inject_fault(zfs_cmd_t *zc)
3843 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id,
3844 &zc->zc_inject_record);
3847 zc->zc_guid = (uint64_t)id;
3853 zfs_ioc_clear_fault(zfs_cmd_t *zc)
3855 return (zio_clear_fault((int)zc->zc_guid));
3859 zfs_ioc_inject_list_next(zfs_cmd_t *zc)
3861 int id = (int)zc->zc_guid;
3864 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name),
3865 &zc->zc_inject_record);
3873 zfs_ioc_error_log(zfs_cmd_t *zc)
3877 size_t count = (size_t)zc->zc_nvlist_dst_size;
3879 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
3882 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst,
3885 zc->zc_nvlist_dst_size = count;
3887 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa);
3889 spa_close(spa, FTAG);
3895 zfs_ioc_clear(zfs_cmd_t *zc)
3902 * On zpool clear we also fix up missing slogs
3904 mutex_enter(&spa_namespace_lock);
3905 spa = spa_lookup(zc->zc_name);
3907 mutex_exit(&spa_namespace_lock);
3910 if (spa_get_log_state(spa) == SPA_LOG_MISSING) {
3911 /* we need to let spa_open/spa_load clear the chains */
3912 spa_set_log_state(spa, SPA_LOG_CLEAR);
3914 spa->spa_last_open_failed = 0;
3915 mutex_exit(&spa_namespace_lock);
3917 if (zc->zc_cookie & ZPOOL_NO_REWIND) {
3918 error = spa_open(zc->zc_name, &spa, FTAG);
3921 nvlist_t *config = NULL;
3923 if (zc->zc_nvlist_src == 0)
3926 if ((error = get_nvlist(zc->zc_nvlist_src,
3927 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) {
3928 error = spa_open_rewind(zc->zc_name, &spa, FTAG,
3930 if (config != NULL) {
3933 if ((err = put_nvlist(zc, config)) != 0)
3935 nvlist_free(config);
3937 nvlist_free(policy);
3944 spa_vdev_state_enter(spa, SCL_NONE);
3946 if (zc->zc_guid == 0) {
3949 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE);
3951 (void) spa_vdev_state_exit(spa, NULL, ENODEV);
3952 spa_close(spa, FTAG);
3957 vdev_clear(spa, vd);
3959 (void) spa_vdev_state_exit(spa, NULL, 0);
3962 * Resume any suspended I/Os.
3964 if (zio_resume(spa) != 0)
3967 spa_close(spa, FTAG);
3974 * zc_name name of filesystem
3975 * zc_value name of origin snapshot
3978 * zc_string name of conflicting snapshot, if there is one
3981 zfs_ioc_promote(zfs_cmd_t *zc)
3986 * We don't need to unmount *all* the origin fs's snapshots, but
3989 cp = strchr(zc->zc_value, '@');
3992 (void) dmu_objset_find(zc->zc_value,
3993 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS);
3994 return (dsl_dataset_promote(zc->zc_name, zc->zc_string));
3998 * Retrieve a single {user|group}{used|quota}@... property.
4001 * zc_name name of filesystem
4002 * zc_objset_type zfs_userquota_prop_t
4003 * zc_value domain name (eg. "S-1-234-567-89")
4004 * zc_guid RID/UID/GID
4007 * zc_cookie property value
4010 zfs_ioc_userspace_one(zfs_cmd_t *zc)
4015 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
4018 error = zfs_sb_hold(zc->zc_name, FTAG, &zsb, B_FALSE);
4022 error = zfs_userspace_one(zsb,
4023 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie);
4024 zfs_sb_rele(zsb, FTAG);
4031 * zc_name name of filesystem
4032 * zc_cookie zap cursor
4033 * zc_objset_type zfs_userquota_prop_t
4034 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist)
4037 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t)
4038 * zc_cookie zap cursor
4041 zfs_ioc_userspace_many(zfs_cmd_t *zc)
4044 int bufsize = zc->zc_nvlist_dst_size;
4051 error = zfs_sb_hold(zc->zc_name, FTAG, &zsb, B_FALSE);
4055 buf = vmem_alloc(bufsize, KM_SLEEP);
4057 error = zfs_userspace_many(zsb, zc->zc_objset_type, &zc->zc_cookie,
4058 buf, &zc->zc_nvlist_dst_size);
4061 error = xcopyout(buf,
4062 (void *)(uintptr_t)zc->zc_nvlist_dst,
4063 zc->zc_nvlist_dst_size);
4065 vmem_free(buf, bufsize);
4066 zfs_sb_rele(zsb, FTAG);
4073 * zc_name name of filesystem
4079 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc)
4085 if (get_zfs_sb(zc->zc_name, &zsb) == 0) {
4086 if (!dmu_objset_userused_enabled(zsb->z_os)) {
4088 * If userused is not enabled, it may be because the
4089 * objset needs to be closed & reopened (to grow the
4090 * objset_phys_t). Suspend/resume the fs will do that.
4092 error = zfs_suspend_fs(zsb);
4094 error = zfs_resume_fs(zsb, zc->zc_name);
4097 error = dmu_objset_userspace_upgrade(zsb->z_os);
4098 deactivate_super(zsb->z_sb);
4100 /* XXX kind of reading contents without owning */
4101 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4105 error = dmu_objset_userspace_upgrade(os);
4106 dmu_objset_rele(os, FTAG);
4113 zfs_ioc_share(zfs_cmd_t *zc)
4118 ace_t full_access[] = {
4119 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0}
4124 * zc_name name of containing filesystem
4125 * zc_obj object # beyond which we want next in-use object #
4128 * zc_obj next in-use object #
4131 zfs_ioc_next_obj(zfs_cmd_t *zc)
4133 objset_t *os = NULL;
4136 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4140 error = dmu_object_next(os, &zc->zc_obj, B_FALSE,
4141 os->os_dsl_dataset->ds_phys->ds_prev_snap_txg);
4143 dmu_objset_rele(os, FTAG);
4149 * zc_name name of filesystem
4150 * zc_value prefix name for snapshot
4151 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
4156 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc)
4161 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value,
4162 (u_longlong_t)ddi_get_lbolt64());
4164 if (strlen(snap_name) >= MAXNAMELEN) {
4169 error = dmu_objset_snapshot(zc->zc_name, snap_name, snap_name,
4170 NULL, B_FALSE, B_TRUE, zc->zc_cleanup_fd);
4176 (void) strcpy(zc->zc_value, snap_name);
4183 * zc_name name of "to" snapshot
4184 * zc_value name of "from" snapshot
4185 * zc_cookie file descriptor to write diff data on
4188 * dmu_diff_record_t's to the file descriptor
4191 zfs_ioc_diff(zfs_cmd_t *zc)
4199 error = dmu_objset_hold(zc->zc_name, FTAG, &tosnap);
4203 error = dmu_objset_hold(zc->zc_value, FTAG, &fromsnap);
4205 dmu_objset_rele(tosnap, FTAG);
4209 fp = getf(zc->zc_cookie);
4211 dmu_objset_rele(fromsnap, FTAG);
4212 dmu_objset_rele(tosnap, FTAG);
4218 error = dmu_diff(tosnap, fromsnap, fp->f_vnode, &off);
4220 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4222 releasef(zc->zc_cookie);
4224 dmu_objset_rele(fromsnap, FTAG);
4225 dmu_objset_rele(tosnap, FTAG);
4230 * Remove all ACL files in shares dir
4232 #ifdef HAVE_SMB_SHARE
4234 zfs_smb_acl_purge(znode_t *dzp)
4237 zap_attribute_t zap;
4238 zfs_sb_t *zsb = ZTOZSB(dzp);
4241 for (zap_cursor_init(&zc, zsb->z_os, dzp->z_id);
4242 (error = zap_cursor_retrieve(&zc, &zap)) == 0;
4243 zap_cursor_advance(&zc)) {
4244 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred,
4248 zap_cursor_fini(&zc);
4251 #endif /* HAVE_SMB_SHARE */
4254 zfs_ioc_smb_acl(zfs_cmd_t *zc)
4256 #ifdef HAVE_SMB_SHARE
4259 vnode_t *resourcevp = NULL;
4268 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
4269 NO_FOLLOW, NULL, &vp)) != 0)
4272 /* Now make sure mntpnt and dataset are ZFS */
4274 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
4275 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
4276 zc->zc_name) != 0)) {
4286 * Create share dir if its missing.
4288 mutex_enter(&zsb->z_lock);
4289 if (zsb->z_shares_dir == 0) {
4292 tx = dmu_tx_create(zsb->z_os);
4293 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE,
4295 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
4296 error = dmu_tx_assign(tx, TXG_WAIT);
4300 error = zfs_create_share_dir(zsb, tx);
4304 mutex_exit(&zsb->z_lock);
4310 mutex_exit(&zsb->z_lock);
4312 ASSERT(zsb->z_shares_dir);
4313 if ((error = zfs_zget(zsb, zsb->z_shares_dir, &sharedir)) != 0) {
4319 switch (zc->zc_cookie) {
4320 case ZFS_SMB_ACL_ADD:
4321 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE;
4322 vattr.va_mode = S_IFREG|0777;
4326 vsec.vsa_mask = VSA_ACE;
4327 vsec.vsa_aclentp = &full_access;
4328 vsec.vsa_aclentsz = sizeof (full_access);
4329 vsec.vsa_aclcnt = 1;
4331 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string,
4332 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec);
4334 VN_RELE(resourcevp);
4337 case ZFS_SMB_ACL_REMOVE:
4338 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred,
4342 case ZFS_SMB_ACL_RENAME:
4343 if ((error = get_nvlist(zc->zc_nvlist_src,
4344 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) {
4349 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) ||
4350 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET,
4353 VN_RELE(ZTOV(sharedir));
4355 nvlist_free(nvlist);
4358 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target,
4360 nvlist_free(nvlist);
4363 case ZFS_SMB_ACL_PURGE:
4364 error = zfs_smb_acl_purge(sharedir);
4373 VN_RELE(ZTOV(sharedir));
4380 #endif /* HAVE_SMB_SHARE */
4385 * zc_name name of filesystem
4386 * zc_value short name of snap
4387 * zc_string user-supplied tag for this hold
4388 * zc_cookie recursive flag
4389 * zc_temphold set if hold is temporary
4390 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
4391 * zc_sendobj if non-zero, the objid for zc_name@zc_value
4392 * zc_createtxg if zc_sendobj is non-zero, snap must have zc_createtxg
4397 zfs_ioc_hold(zfs_cmd_t *zc)
4399 boolean_t recursive = zc->zc_cookie;
4406 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
4409 if (zc->zc_sendobj == 0) {
4410 return (dsl_dataset_user_hold(zc->zc_name, zc->zc_value,
4411 zc->zc_string, recursive, zc->zc_temphold,
4412 zc->zc_cleanup_fd));
4418 error = spa_open(zc->zc_name, &spa, FTAG);
4422 dp = spa_get_dsl(spa);
4423 rw_enter(&dp->dp_config_rwlock, RW_READER);
4424 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
4425 rw_exit(&dp->dp_config_rwlock);
4426 spa_close(spa, FTAG);
4431 * Until we have a hold on this snapshot, it's possible that
4432 * zc_sendobj could've been destroyed and reused as part
4433 * of a later txg. Make sure we're looking at the right object.
4435 if (zc->zc_createtxg != ds->ds_phys->ds_creation_txg) {
4436 dsl_dataset_rele(ds, FTAG);
4440 if (zc->zc_cleanup_fd != -1 && zc->zc_temphold) {
4441 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor);
4443 dsl_dataset_rele(ds, FTAG);
4448 error = dsl_dataset_user_hold_for_send(ds, zc->zc_string,
4452 dsl_register_onexit_hold_cleanup(ds, zc->zc_string,
4455 zfs_onexit_fd_rele(zc->zc_cleanup_fd);
4457 dsl_dataset_rele(ds, FTAG);
4464 * zc_name name of dataset from which we're releasing a user hold
4465 * zc_value short name of snap
4466 * zc_string user-supplied tag for this hold
4467 * zc_cookie recursive flag
4472 zfs_ioc_release(zfs_cmd_t *zc)
4474 boolean_t recursive = zc->zc_cookie;
4476 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
4479 return (dsl_dataset_user_release(zc->zc_name, zc->zc_value,
4480 zc->zc_string, recursive));
4485 * zc_name name of filesystem
4488 * zc_nvlist_src{_size} nvlist of snapshot holds
4491 zfs_ioc_get_holds(zfs_cmd_t *zc)
4496 if ((error = dsl_dataset_get_holds(zc->zc_name, &nvp)) == 0) {
4497 error = put_nvlist(zc, nvp);
4506 * zc_guid flags (ZEVENT_NONBLOCK)
4509 * zc_nvlist_dst next nvlist event
4510 * zc_cookie dropped events since last get
4511 * zc_cleanup_fd cleanup-on-exit file descriptor
4514 zfs_ioc_events_next(zfs_cmd_t *zc)
4517 nvlist_t *event = NULL;
4519 uint64_t dropped = 0;
4522 error = zfs_zevent_fd_hold(zc->zc_cleanup_fd, &minor, &ze);
4527 error = zfs_zevent_next(ze, &event,
4528 &zc->zc_nvlist_dst_size, &dropped);
4529 if (event != NULL) {
4530 zc->zc_cookie = dropped;
4531 error = put_nvlist(zc, event);
4535 if (zc->zc_guid & ZEVENT_NONBLOCK)
4538 if ((error == 0) || (error != ENOENT))
4541 error = zfs_zevent_wait(ze);
4546 zfs_zevent_fd_rele(zc->zc_cleanup_fd);
4553 * zc_cookie cleared events count
4556 zfs_ioc_events_clear(zfs_cmd_t *zc)
4560 zfs_zevent_drain_all(&count);
4561 zc->zc_cookie = count;
4567 * pool create, destroy, and export don't log the history as part of
4568 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export
4569 * do the logging of those commands.
4571 static zfs_ioc_vec_t zfs_ioc_vec[] = {
4572 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4574 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4576 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4578 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4580 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE,
4582 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE,
4584 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE,
4586 { zfs_ioc_pool_scan, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4587 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4588 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE,
4589 POOL_CHECK_READONLY },
4590 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4591 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4592 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4594 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4595 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4596 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4597 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4598 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4599 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4600 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4601 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4602 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4603 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4604 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4605 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4606 { zfs_ioc_vdev_setfru, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4607 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4608 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4609 POOL_CHECK_SUSPENDED },
4610 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4612 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4613 POOL_CHECK_SUSPENDED },
4614 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4615 POOL_CHECK_SUSPENDED },
4616 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE,
4617 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4618 { zfs_ioc_create_minor, zfs_secpolicy_config, DATASET_NAME, B_FALSE,
4620 { zfs_ioc_remove_minor, zfs_secpolicy_config, DATASET_NAME, B_FALSE,
4622 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE,
4623 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4624 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE,
4625 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4626 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE,
4627 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4628 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE,
4629 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4630 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE,
4631 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4632 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE,
4634 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE,
4636 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE,
4638 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE,
4640 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE,
4642 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4644 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE,
4645 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4646 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, DATASET_NAME,
4647 B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4648 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE,
4649 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4650 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_diff, POOL_NAME, B_FALSE,
4652 { zfs_ioc_obj_to_path, zfs_secpolicy_diff, DATASET_NAME, B_FALSE,
4653 POOL_CHECK_SUSPENDED },
4654 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4655 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4656 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE,
4658 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE,
4659 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4660 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4662 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE,
4664 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE,
4665 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4666 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE,
4668 { zfs_ioc_userspace_one, zfs_secpolicy_userspace_one, DATASET_NAME,
4669 B_FALSE, POOL_CHECK_NONE },
4670 { zfs_ioc_userspace_many, zfs_secpolicy_userspace_many, DATASET_NAME,
4671 B_FALSE, POOL_CHECK_NONE },
4672 { zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade,
4673 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4674 { zfs_ioc_hold, zfs_secpolicy_hold, DATASET_NAME, B_TRUE,
4675 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4676 { zfs_ioc_release, zfs_secpolicy_release, DATASET_NAME, B_TRUE,
4677 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4678 { zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4679 POOL_CHECK_SUSPENDED },
4680 { zfs_ioc_objset_recvd_props, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4682 { zfs_ioc_vdev_split, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4683 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4684 { zfs_ioc_next_obj, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4686 { zfs_ioc_diff, zfs_secpolicy_diff, DATASET_NAME, B_FALSE,
4688 { zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, DATASET_NAME,
4689 B_FALSE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4690 { zfs_ioc_obj_to_stats, zfs_secpolicy_diff, DATASET_NAME, B_FALSE,
4691 POOL_CHECK_SUSPENDED },
4692 { zfs_ioc_events_next, zfs_secpolicy_config, NO_NAME, B_FALSE,
4694 { zfs_ioc_events_clear, zfs_secpolicy_config, NO_NAME, B_FALSE,
4699 pool_status_check(const char *name, zfs_ioc_namecheck_t type,
4700 zfs_ioc_poolcheck_t check)
4705 ASSERT(type == POOL_NAME || type == DATASET_NAME);
4707 if (check & POOL_CHECK_NONE)
4710 error = spa_open(name, &spa, FTAG);
4712 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa))
4714 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa))
4716 spa_close(spa, FTAG);
4722 zfsdev_get_state_impl(minor_t minor, enum zfsdev_state_type which)
4726 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
4728 for (zs = list_head(&zfsdev_state_list); zs != NULL;
4729 zs = list_next(&zfsdev_state_list, zs)) {
4730 if (zs->zs_minor == minor) {
4732 case ZST_ONEXIT: return (zs->zs_onexit);
4733 case ZST_ZEVENT: return (zs->zs_zevent);
4734 case ZST_ALL: return (zs);
4743 zfsdev_get_state(minor_t minor, enum zfsdev_state_type which)
4747 mutex_enter(&zfsdev_state_lock);
4748 ptr = zfsdev_get_state_impl(minor, which);
4749 mutex_exit(&zfsdev_state_lock);
4755 zfsdev_getminor(struct file *filp)
4757 ASSERT(filp != NULL);
4758 ASSERT(filp->private_data != NULL);
4760 return (((zfsdev_state_t *)filp->private_data)->zs_minor);
4764 * Find a free minor number. The zfsdev_state_list is expected to
4765 * be short since it is only a list of currently open file handles.
4768 zfsdev_minor_alloc(void)
4770 static minor_t last_minor = 0;
4773 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
4775 for (m = last_minor + 1; m != last_minor; m++) {
4776 if (m > ZFSDEV_MAX_MINOR)
4778 if (zfsdev_get_state_impl(m, ZST_ALL) == NULL) {
4788 zfsdev_state_init(struct file *filp)
4793 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
4795 minor = zfsdev_minor_alloc();
4799 zs = kmem_zalloc( sizeof(zfsdev_state_t), KM_SLEEP);
4804 zs->zs_minor = minor;
4805 filp->private_data = zs;
4807 zfs_onexit_init((zfs_onexit_t **)&zs->zs_onexit);
4808 zfs_zevent_init((zfs_zevent_t **)&zs->zs_zevent);
4810 list_insert_tail(&zfsdev_state_list, zs);
4816 zfsdev_state_destroy(struct file *filp)
4820 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
4821 ASSERT(filp->private_data != NULL);
4823 zs = filp->private_data;
4824 zfs_onexit_destroy(zs->zs_onexit);
4825 zfs_zevent_destroy(zs->zs_zevent);
4827 list_remove(&zfsdev_state_list, zs);
4828 kmem_free(zs, sizeof(zfsdev_state_t));
4834 zfsdev_open(struct inode *ino, struct file *filp)
4838 mutex_enter(&zfsdev_state_lock);
4839 error = zfsdev_state_init(filp);
4840 mutex_exit(&zfsdev_state_lock);
4846 zfsdev_release(struct inode *ino, struct file *filp)
4850 mutex_enter(&zfsdev_state_lock);
4851 error = zfsdev_state_destroy(filp);
4852 mutex_exit(&zfsdev_state_lock);
4858 zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
4862 int error, rc, flag = 0;
4864 vec = cmd - ZFS_IOC;
4865 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
4868 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
4870 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag);
4874 if ((error == 0) && !(flag & FKIOCTL))
4875 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, CRED());
4878 * Ensure that all pool/dataset names are valid before we pass down to
4882 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
4883 zc->zc_iflags = flag & FKIOCTL;
4884 switch (zfs_ioc_vec[vec].zvec_namecheck) {
4886 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
4888 error = pool_status_check(zc->zc_name,
4889 zfs_ioc_vec[vec].zvec_namecheck,
4890 zfs_ioc_vec[vec].zvec_pool_check);
4894 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
4896 error = pool_status_check(zc->zc_name,
4897 zfs_ioc_vec[vec].zvec_namecheck,
4898 zfs_ioc_vec[vec].zvec_pool_check);
4907 error = zfs_ioc_vec[vec].zvec_func(zc);
4909 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag);
4913 if (zfs_ioc_vec[vec].zvec_his_log)
4914 zfs_log_history(zc);
4917 kmem_free(zc, sizeof (zfs_cmd_t));
4921 #ifdef CONFIG_COMPAT
4923 zfsdev_compat_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
4925 return zfsdev_ioctl(filp, cmd, arg);
4928 #define zfsdev_compat_ioctl NULL
4931 static const struct file_operations zfsdev_fops = {
4932 .open = zfsdev_open,
4933 .release = zfsdev_release,
4934 .unlocked_ioctl = zfsdev_ioctl,
4935 .compat_ioctl = zfsdev_compat_ioctl,
4936 .owner = THIS_MODULE,
4939 static struct miscdevice zfs_misc = {
4940 .minor = MISC_DYNAMIC_MINOR,
4942 .fops = &zfsdev_fops,
4950 mutex_init(&zfsdev_state_lock, NULL, MUTEX_DEFAULT, NULL);
4951 list_create(&zfsdev_state_list, sizeof (zfsdev_state_t),
4952 offsetof(zfsdev_state_t, zs_next));
4954 error = misc_register(&zfs_misc);
4956 printk(KERN_INFO "ZFS: misc_register() failed %d\n", error);
4968 error = misc_deregister(&zfs_misc);
4970 printk(KERN_INFO "ZFS: misc_deregister() failed %d\n", error);
4972 mutex_destroy(&zfsdev_state_lock);
4973 list_destroy(&zfsdev_state_list);
4976 uint_t zfs_fsyncer_key;
4977 extern uint_t rrw_tsd_key;
4980 #define ZFS_DEBUG_STR " (DEBUG mode)"
4982 #define ZFS_DEBUG_STR ""
4990 spa_init(FREAD | FWRITE);
4993 if ((error = zvol_init()) != 0)
4996 if ((error = zfs_attach()) != 0)
4999 tsd_create(&zfs_fsyncer_key, NULL);
5000 tsd_create(&rrw_tsd_key, NULL);
5002 printk(KERN_NOTICE "ZFS: Loaded module v%s-%s%s, "
5003 "ZFS pool version %s, ZFS filesystem version %s\n",
5004 ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR,
5005 SPA_VERSION_STRING, ZPL_VERSION_STRING);
5014 printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s-%s%s"
5015 ", rc = %d\n", ZFS_META_VERSION, ZFS_META_RELEASE,
5016 ZFS_DEBUG_STR, error);
5029 tsd_destroy(&zfs_fsyncer_key);
5030 tsd_destroy(&rrw_tsd_key);
5032 printk(KERN_NOTICE "ZFS: Unloaded module v%s-%s%s\n",
5033 ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR);
5039 spl_module_init(_init);
5040 spl_module_exit(_fini);
5042 MODULE_DESCRIPTION("ZFS");
5043 MODULE_AUTHOR(ZFS_META_AUTHOR);
5044 MODULE_LICENSE(ZFS_META_LICENSE);
5045 #endif /* HAVE_SPL */