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_dir.h>
62 #include <sys/zfs_onexit.h>
64 #include <sys/dsl_scan.h>
65 #include <sharefs/share.h>
66 #include <sys/dmu_objset.h>
67 #include <sys/fm/util.h>
69 #include <linux/miscdevice.h>
71 #include "zfs_namecheck.h"
73 #include "zfs_deleg.h"
74 #include "zfs_comutil.h"
76 kmutex_t zfsdev_state_lock;
77 list_t zfsdev_state_list;
79 extern void zfs_init(void);
80 extern void zfs_fini(void);
82 typedef int zfs_ioc_func_t(zfs_cmd_t *);
83 typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *);
89 } zfs_ioc_namecheck_t;
92 POOL_CHECK_NONE = 1 << 0,
93 POOL_CHECK_SUSPENDED = 1 << 1,
94 POOL_CHECK_READONLY = 1 << 2
95 } zfs_ioc_poolcheck_t;
97 typedef struct zfs_ioc_vec {
98 zfs_ioc_func_t *zvec_func;
99 zfs_secpolicy_func_t *zvec_secpolicy;
100 zfs_ioc_namecheck_t zvec_namecheck;
101 boolean_t zvec_his_log;
102 zfs_ioc_poolcheck_t zvec_pool_check;
105 /* This array is indexed by zfs_userquota_prop_t */
106 static const char *userquota_perms[] = {
107 ZFS_DELEG_PERM_USERUSED,
108 ZFS_DELEG_PERM_USERQUOTA,
109 ZFS_DELEG_PERM_GROUPUSED,
110 ZFS_DELEG_PERM_GROUPQUOTA,
113 static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc);
114 static int zfs_check_settable(const char *name, nvpair_t *property,
116 static int zfs_check_clearable(char *dataset, nvlist_t *props,
118 static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *,
120 int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t **);
122 /* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */
124 __dprintf(const char *file, const char *func, int line, const char *fmt, ...)
131 * Get rid of annoying "../common/" prefix to filename.
133 newfile = strrchr(file, '/');
134 if (newfile != NULL) {
135 newfile = newfile + 1; /* Get rid of leading / */
141 (void) vsnprintf(buf, sizeof (buf), fmt, adx);
145 * To get this data, use the zfs-dprintf probe as so:
146 * dtrace -q -n 'zfs-dprintf \
147 * /stringof(arg0) == "dbuf.c"/ \
148 * {printf("%s: %s", stringof(arg1), stringof(arg3))}'
150 * arg1 = function name
154 DTRACE_PROBE4(zfs__dprintf,
155 char *, newfile, char *, func, int, line, char *, buf);
159 history_str_free(char *buf)
161 kmem_free(buf, HIS_MAX_RECORD_LEN);
165 history_str_get(zfs_cmd_t *zc)
169 if (zc->zc_history == 0)
172 buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP | KM_NODEBUG);
173 if (copyinstr((void *)(uintptr_t)zc->zc_history,
174 buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
175 history_str_free(buf);
179 buf[HIS_MAX_RECORD_LEN -1] = '\0';
185 * Check to see if the named dataset is currently defined as bootable
188 zfs_is_bootfs(const char *name)
192 if (dmu_objset_hold(name, FTAG, &os) == 0) {
194 ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os)));
195 dmu_objset_rele(os, FTAG);
202 * zfs_earlier_version
204 * Return non-zero if the spa version is less than requested version.
207 zfs_earlier_version(const char *name, int version)
211 if (spa_open(name, &spa, FTAG) == 0) {
212 if (spa_version(spa) < version) {
213 spa_close(spa, FTAG);
216 spa_close(spa, FTAG);
222 * zpl_earlier_version
224 * Return TRUE if the ZPL version is less than requested version.
227 zpl_earlier_version(const char *name, int version)
230 boolean_t rc = B_TRUE;
232 if (dmu_objset_hold(name, FTAG, &os) == 0) {
235 if (dmu_objset_type(os) != DMU_OST_ZFS) {
236 dmu_objset_rele(os, FTAG);
239 /* XXX reading from non-owned objset */
240 if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0)
241 rc = zplversion < version;
242 dmu_objset_rele(os, FTAG);
248 zfs_log_history(zfs_cmd_t *zc)
253 if ((buf = history_str_get(zc)) == NULL)
256 if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
257 if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
258 (void) spa_history_log(spa, buf, LOG_CMD_NORMAL);
259 spa_close(spa, FTAG);
261 history_str_free(buf);
265 * Policy for top-level read operations (list pools). Requires no privileges,
266 * and can be used in the local zone, as there is no associated dataset.
270 zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr)
276 * Policy for dataset read operations (list children, get statistics). Requires
277 * no privileges, but must be visible in the local zone.
281 zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr)
283 if (INGLOBALZONE(curproc) ||
284 zone_dataset_visible(zc->zc_name, NULL))
291 zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr)
296 * The dataset must be visible by this zone -- check this first
297 * so they don't see EPERM on something they shouldn't know about.
299 if (!INGLOBALZONE(curproc) &&
300 !zone_dataset_visible(dataset, &writable))
303 if (INGLOBALZONE(curproc)) {
305 * If the fs is zoned, only root can access it from the
308 if (secpolicy_zfs(cr) && zoned)
312 * If we are in a local zone, the 'zoned' property must be set.
317 /* must be writable by this zone */
325 zfs_dozonecheck(const char *dataset, cred_t *cr)
329 if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
332 return (zfs_dozonecheck_impl(dataset, zoned, cr));
336 zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr)
340 rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER);
341 if (dsl_prop_get_ds(ds, "zoned", 8, 1, &zoned, NULL)) {
342 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
345 rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
347 return (zfs_dozonecheck_impl(dataset, zoned, cr));
351 zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
355 error = zfs_dozonecheck(name, cr);
357 error = secpolicy_zfs(cr);
359 error = dsl_deleg_access(name, perm, cr);
365 zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds,
366 const char *perm, cred_t *cr)
370 error = zfs_dozonecheck_ds(name, ds, cr);
372 error = secpolicy_zfs(cr);
374 error = dsl_deleg_access_impl(ds, perm, cr);
380 * Policy for setting the security label property.
382 * Returns 0 for success, non-zero for access and other errors.
385 zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr)
388 char ds_hexsl[MAXNAMELEN];
389 bslabel_t ds_sl, new_sl;
390 boolean_t new_default = FALSE;
392 int needed_priv = -1;
395 /* First get the existing dataset label. */
396 error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL),
397 1, sizeof (ds_hexsl), &ds_hexsl, NULL);
401 if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
404 /* The label must be translatable */
405 if (!new_default && (hexstr_to_label(strval, &new_sl) != 0))
409 * In a non-global zone, disallow attempts to set a label that
410 * doesn't match that of the zone; otherwise no other checks
413 if (!INGLOBALZONE(curproc)) {
414 if (new_default || !blequal(&new_sl, CR_SL(CRED())))
420 * For global-zone datasets (i.e., those whose zoned property is
421 * "off", verify that the specified new label is valid for the
424 if (dsl_prop_get_integer(name,
425 zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL))
428 if (zfs_check_global_label(name, strval) != 0)
433 * If the existing dataset label is nondefault, check if the
434 * dataset is mounted (label cannot be changed while mounted).
435 * Get the zfs_sb_t; if there isn't one, then the dataset isn't
436 * mounted (or isn't a dataset, doesn't exist, ...).
438 if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) {
440 static char *setsl_tag = "setsl_tag";
443 * Try to own the dataset; abort if there is any error,
444 * (e.g., already mounted, in use, or other error).
446 error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE,
451 dmu_objset_disown(os, setsl_tag);
454 needed_priv = PRIV_FILE_DOWNGRADE_SL;
458 if (hexstr_to_label(strval, &new_sl) != 0)
461 if (blstrictdom(&ds_sl, &new_sl))
462 needed_priv = PRIV_FILE_DOWNGRADE_SL;
463 else if (blstrictdom(&new_sl, &ds_sl))
464 needed_priv = PRIV_FILE_UPGRADE_SL;
466 /* dataset currently has a default label */
468 needed_priv = PRIV_FILE_UPGRADE_SL;
472 if (needed_priv != -1)
473 return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL));
477 #endif /* HAVE_MLSLABEL */
481 zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval,
487 * Check permissions for special properties.
494 * Disallow setting of 'zoned' from within a local zone.
496 if (!INGLOBALZONE(curproc))
501 if (!INGLOBALZONE(curproc)) {
503 char setpoint[MAXNAMELEN];
505 * Unprivileged users are allowed to modify the
506 * quota on things *under* (ie. contained by)
507 * the thing they own.
509 if (dsl_prop_get_integer(dsname, "zoned", &zoned,
512 if (!zoned || strlen(dsname) <= strlen(setpoint))
517 case ZFS_PROP_MLSLABEL:
518 if (!is_system_labeled())
521 if (nvpair_value_string(propval, &strval) == 0) {
524 err = zfs_set_slabel_policy(dsname, strval, CRED());
531 return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr));
535 zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr)
539 error = zfs_dozonecheck(zc->zc_name, cr);
544 * permission to set permissions will be evaluated later in
545 * dsl_deleg_can_allow()
551 zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr)
553 return (zfs_secpolicy_write_perms(zc->zc_name,
554 ZFS_DELEG_PERM_ROLLBACK, cr));
558 zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr)
567 * Generate the current snapshot name from the given objsetid, then
568 * use that name for the secpolicy/zone checks.
570 cp = strchr(zc->zc_name, '@');
573 error = spa_open(zc->zc_name, &spa, FTAG);
577 dp = spa_get_dsl(spa);
578 rw_enter(&dp->dp_config_rwlock, RW_READER);
579 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
580 rw_exit(&dp->dp_config_rwlock);
581 spa_close(spa, FTAG);
585 dsl_dataset_name(ds, zc->zc_name);
587 error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds,
588 ZFS_DELEG_PERM_SEND, cr);
589 dsl_dataset_rele(ds, FTAG);
594 #ifdef HAVE_SMB_SHARE
596 zfs_secpolicy_deleg_share(zfs_cmd_t *zc, cred_t *cr)
601 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
602 NO_FOLLOW, NULL, &vp)) != 0)
605 /* Now make sure mntpnt and dataset are ZFS */
607 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
608 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
609 zc->zc_name) != 0)) {
615 return (dsl_deleg_access(zc->zc_name,
616 ZFS_DELEG_PERM_SHARE, cr));
618 #endif /* HAVE_SMB_SHARE */
621 zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr)
623 #ifdef HAVE_SMB_SHARE
624 if (!INGLOBALZONE(curproc))
627 if (secpolicy_nfs(cr) == 0) {
630 return (zfs_secpolicy_deleg_share(zc, cr));
634 #endif /* HAVE_SMB_SHARE */
638 zfs_secpolicy_smb_acl(zfs_cmd_t *zc, cred_t *cr)
640 #ifdef HAVE_SMB_SHARE
641 if (!INGLOBALZONE(curproc))
644 if (secpolicy_smb(cr) == 0) {
647 return (zfs_secpolicy_deleg_share(zc, cr));
651 #endif /* HAVE_SMB_SHARE */
655 zfs_get_parent(const char *datasetname, char *parent, int parentsize)
660 * Remove the @bla or /bla from the end of the name to get the parent.
662 (void) strncpy(parent, datasetname, parentsize);
663 cp = strrchr(parent, '@');
667 cp = strrchr(parent, '/');
677 zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
681 if ((error = zfs_secpolicy_write_perms(name,
682 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
685 return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
689 zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr)
691 return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
695 * Destroying snapshots with delegated permissions requires
696 * descendent mount and destroy permissions.
697 * Reassemble the full filesystem@snap name so dsl_deleg_access()
698 * can do the correct permission check.
700 * Since this routine is used when doing a recursive destroy of snapshots
701 * and destroying snapshots requires descendent permissions, a successfull
702 * check of the top level snapshot applies to snapshots of all descendent
706 zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, cred_t *cr)
711 dsname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value);
713 error = zfs_secpolicy_destroy_perms(dsname, cr);
720 zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
722 char parentname[MAXNAMELEN];
725 if ((error = zfs_secpolicy_write_perms(from,
726 ZFS_DELEG_PERM_RENAME, cr)) != 0)
729 if ((error = zfs_secpolicy_write_perms(from,
730 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
733 if ((error = zfs_get_parent(to, parentname,
734 sizeof (parentname))) != 0)
737 if ((error = zfs_secpolicy_write_perms(parentname,
738 ZFS_DELEG_PERM_CREATE, cr)) != 0)
741 if ((error = zfs_secpolicy_write_perms(parentname,
742 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
749 zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr)
751 return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));
755 zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr)
757 char parentname[MAXNAMELEN];
761 error = zfs_secpolicy_write_perms(zc->zc_name,
762 ZFS_DELEG_PERM_PROMOTE, cr);
766 error = dmu_objset_hold(zc->zc_name, FTAG, &clone);
769 dsl_dataset_t *pclone = NULL;
771 dd = clone->os_dsl_dataset->ds_dir;
773 rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER);
774 error = dsl_dataset_hold_obj(dd->dd_pool,
775 dd->dd_phys->dd_origin_obj, FTAG, &pclone);
776 rw_exit(&dd->dd_pool->dp_config_rwlock);
778 dmu_objset_rele(clone, FTAG);
782 error = zfs_secpolicy_write_perms(zc->zc_name,
783 ZFS_DELEG_PERM_MOUNT, cr);
785 dsl_dataset_name(pclone, parentname);
786 dmu_objset_rele(clone, FTAG);
787 dsl_dataset_rele(pclone, FTAG);
789 error = zfs_secpolicy_write_perms(parentname,
790 ZFS_DELEG_PERM_PROMOTE, cr);
796 zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr)
800 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
801 ZFS_DELEG_PERM_RECEIVE, cr)) != 0)
804 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
805 ZFS_DELEG_PERM_MOUNT, cr)) != 0)
808 return (zfs_secpolicy_write_perms(zc->zc_name,
809 ZFS_DELEG_PERM_CREATE, cr));
813 zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
815 return (zfs_secpolicy_write_perms(name,
816 ZFS_DELEG_PERM_SNAPSHOT, cr));
820 zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr)
823 return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr));
827 zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr)
829 char parentname[MAXNAMELEN];
832 if ((error = zfs_get_parent(zc->zc_name, parentname,
833 sizeof (parentname))) != 0)
836 if (zc->zc_value[0] != '\0') {
837 if ((error = zfs_secpolicy_write_perms(zc->zc_value,
838 ZFS_DELEG_PERM_CLONE, cr)) != 0)
842 if ((error = zfs_secpolicy_write_perms(parentname,
843 ZFS_DELEG_PERM_CREATE, cr)) != 0)
846 error = zfs_secpolicy_write_perms(parentname,
847 ZFS_DELEG_PERM_MOUNT, cr);
853 * Policy for pool operations - create/destroy pools, add vdevs, etc. Requires
854 * SYS_CONFIG privilege, which is not available in a local zone.
858 zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr)
860 if (secpolicy_sys_config(cr, B_FALSE) != 0)
867 * Policy for object to name lookups.
871 zfs_secpolicy_diff(zfs_cmd_t *zc, cred_t *cr)
875 if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0)
878 error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr);
883 * Policy for fault injection. Requires all privileges.
887 zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr)
889 return (secpolicy_zinject(cr));
893 zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr)
895 zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
897 if (prop == ZPROP_INVAL) {
898 if (!zfs_prop_user(zc->zc_value))
900 return (zfs_secpolicy_write_perms(zc->zc_name,
901 ZFS_DELEG_PERM_USERPROP, cr));
903 return (zfs_secpolicy_setprop(zc->zc_name, prop,
909 zfs_secpolicy_userspace_one(zfs_cmd_t *zc, cred_t *cr)
911 int err = zfs_secpolicy_read(zc, cr);
915 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
918 if (zc->zc_value[0] == 0) {
920 * They are asking about a posix uid/gid. If it's
921 * themself, allow it.
923 if (zc->zc_objset_type == ZFS_PROP_USERUSED ||
924 zc->zc_objset_type == ZFS_PROP_USERQUOTA) {
925 if (zc->zc_guid == crgetuid(cr))
928 if (groupmember(zc->zc_guid, cr))
933 return (zfs_secpolicy_write_perms(zc->zc_name,
934 userquota_perms[zc->zc_objset_type], cr));
938 zfs_secpolicy_userspace_many(zfs_cmd_t *zc, cred_t *cr)
940 int err = zfs_secpolicy_read(zc, cr);
944 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
947 return (zfs_secpolicy_write_perms(zc->zc_name,
948 userquota_perms[zc->zc_objset_type], cr));
952 zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, cred_t *cr)
954 return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION,
959 zfs_secpolicy_hold(zfs_cmd_t *zc, cred_t *cr)
961 return (zfs_secpolicy_write_perms(zc->zc_name,
962 ZFS_DELEG_PERM_HOLD, cr));
966 zfs_secpolicy_release(zfs_cmd_t *zc, cred_t *cr)
968 return (zfs_secpolicy_write_perms(zc->zc_name,
969 ZFS_DELEG_PERM_RELEASE, cr));
973 * Policy for allowing temporary snapshots to be taken or released
976 zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, cred_t *cr)
979 * A temporary snapshot is the same as a snapshot,
980 * hold, destroy and release all rolled into one.
981 * Delegated diff alone is sufficient that we allow this.
985 if ((error = zfs_secpolicy_write_perms(zc->zc_name,
986 ZFS_DELEG_PERM_DIFF, cr)) == 0)
989 error = zfs_secpolicy_snapshot(zc, cr);
991 error = zfs_secpolicy_hold(zc, cr);
993 error = zfs_secpolicy_release(zc, cr);
995 error = zfs_secpolicy_destroy(zc, cr);
1000 * Returns the nvlist as specified by the user in the zfs_cmd_t.
1003 get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp)
1007 nvlist_t *list = NULL;
1010 * Read in and unpack the user-supplied nvlist.
1015 packed = kmem_alloc(size, KM_SLEEP | KM_NODEBUG);
1017 if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
1019 kmem_free(packed, size);
1023 if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) {
1024 kmem_free(packed, size);
1028 kmem_free(packed, size);
1035 fit_error_list(zfs_cmd_t *zc, nvlist_t **errors)
1039 VERIFY(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0);
1041 if (size > zc->zc_nvlist_dst_size) {
1042 nvpair_t *more_errors;
1045 if (zc->zc_nvlist_dst_size < 1024)
1048 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, 0) == 0);
1049 more_errors = nvlist_prev_nvpair(*errors, NULL);
1052 nvpair_t *pair = nvlist_prev_nvpair(*errors,
1054 VERIFY(nvlist_remove_nvpair(*errors, pair) == 0);
1056 VERIFY(nvlist_size(*errors, &size,
1057 NV_ENCODE_NATIVE) == 0);
1058 } while (size > zc->zc_nvlist_dst_size);
1060 VERIFY(nvlist_remove_nvpair(*errors, more_errors) == 0);
1061 VERIFY(nvlist_add_int32(*errors, ZPROP_N_MORE_ERRORS, n) == 0);
1062 ASSERT(nvlist_size(*errors, &size, NV_ENCODE_NATIVE) == 0);
1063 ASSERT(size <= zc->zc_nvlist_dst_size);
1070 put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
1072 char *packed = NULL;
1076 VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0);
1078 if (size > zc->zc_nvlist_dst_size) {
1081 packed = kmem_alloc(size, KM_SLEEP | KM_NODEBUG);
1082 VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
1084 if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
1085 size, zc->zc_iflags) != 0)
1087 kmem_free(packed, size);
1090 zc->zc_nvlist_dst_size = size;
1095 get_zfs_sb(const char *dsname, zfs_sb_t **zsbp)
1100 error = dmu_objset_hold(dsname, FTAG, &os);
1103 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1104 dmu_objset_rele(os, FTAG);
1108 mutex_enter(&os->os_user_ptr_lock);
1109 *zsbp = dmu_objset_get_user(os);
1110 if (*zsbp && (*zsbp)->z_sb) {
1111 atomic_inc(&((*zsbp)->z_sb->s_active));
1115 mutex_exit(&os->os_user_ptr_lock);
1116 dmu_objset_rele(os, FTAG);
1121 * Find a zfs_sb_t for a mounted filesystem, or create our own, in which
1122 * case its z_sb will be NULL, and it will be opened as the owner.
1125 zfs_sb_hold(const char *name, void *tag, zfs_sb_t **zsbp, boolean_t writer)
1129 if (get_zfs_sb(name, zsbp) != 0)
1130 error = zfs_sb_create(name, zsbp);
1132 rrw_enter(&(*zsbp)->z_teardown_lock, (writer) ? RW_WRITER :
1134 if ((*zsbp)->z_unmounted) {
1136 * XXX we could probably try again, since the unmounting
1137 * thread should be just about to disassociate the
1138 * objset from the zfsvfs.
1140 rrw_exit(&(*zsbp)->z_teardown_lock, tag);
1148 zfs_sb_rele(zfs_sb_t *zsb, void *tag)
1150 rrw_exit(&zsb->z_teardown_lock, tag);
1153 deactivate_super(zsb->z_sb);
1155 dmu_objset_disown(zsb->z_os, zsb);
1161 zfs_ioc_pool_create(zfs_cmd_t *zc)
1164 nvlist_t *config, *props = NULL;
1165 nvlist_t *rootprops = NULL;
1166 nvlist_t *zplprops = NULL;
1169 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1170 zc->zc_iflags, &config)))
1173 if (zc->zc_nvlist_src_size != 0 && (error =
1174 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1175 zc->zc_iflags, &props))) {
1176 nvlist_free(config);
1181 nvlist_t *nvl = NULL;
1182 uint64_t version = SPA_VERSION;
1184 (void) nvlist_lookup_uint64(props,
1185 zpool_prop_to_name(ZPOOL_PROP_VERSION), &version);
1186 if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) {
1188 goto pool_props_bad;
1190 (void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl);
1192 error = nvlist_dup(nvl, &rootprops, KM_SLEEP);
1194 nvlist_free(config);
1198 (void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS);
1200 VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1201 error = zfs_fill_zplprops_root(version, rootprops,
1204 goto pool_props_bad;
1207 buf = history_str_get(zc);
1209 error = spa_create(zc->zc_name, config, props, buf, zplprops);
1212 * Set the remaining root properties
1214 if (!error && (error = zfs_set_prop_nvlist(zc->zc_name,
1215 ZPROP_SRC_LOCAL, rootprops, NULL)) != 0)
1216 (void) spa_destroy(zc->zc_name);
1219 history_str_free(buf);
1222 nvlist_free(rootprops);
1223 nvlist_free(zplprops);
1224 nvlist_free(config);
1231 zfs_ioc_pool_destroy(zfs_cmd_t *zc)
1234 zfs_log_history(zc);
1235 error = spa_destroy(zc->zc_name);
1237 zvol_remove_minors(zc->zc_name);
1242 zfs_ioc_pool_import(zfs_cmd_t *zc)
1244 nvlist_t *config, *props = NULL;
1248 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1249 zc->zc_iflags, &config)) != 0)
1252 if (zc->zc_nvlist_src_size != 0 && (error =
1253 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1254 zc->zc_iflags, &props))) {
1255 nvlist_free(config);
1259 if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
1260 guid != zc->zc_guid)
1263 error = spa_import(zc->zc_name, config, props, zc->zc_cookie);
1265 if (zc->zc_nvlist_dst != 0) {
1268 if ((err = put_nvlist(zc, config)) != 0)
1273 zvol_create_minors(zc->zc_name);
1275 nvlist_free(config);
1284 zfs_ioc_pool_export(zfs_cmd_t *zc)
1287 boolean_t force = (boolean_t)zc->zc_cookie;
1288 boolean_t hardforce = (boolean_t)zc->zc_guid;
1290 zfs_log_history(zc);
1291 error = spa_export(zc->zc_name, NULL, force, hardforce);
1293 zvol_remove_minors(zc->zc_name);
1298 zfs_ioc_pool_configs(zfs_cmd_t *zc)
1303 if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
1306 error = put_nvlist(zc, configs);
1308 nvlist_free(configs);
1314 zfs_ioc_pool_stats(zfs_cmd_t *zc)
1320 error = spa_get_stats(zc->zc_name, &config, zc->zc_value,
1321 sizeof (zc->zc_value));
1323 if (config != NULL) {
1324 ret = put_nvlist(zc, config);
1325 nvlist_free(config);
1328 * The config may be present even if 'error' is non-zero.
1329 * In this case we return success, and preserve the real errno
1332 zc->zc_cookie = error;
1341 * Try to import the given pool, returning pool stats as appropriate so that
1342 * user land knows which devices are available and overall pool health.
1345 zfs_ioc_pool_tryimport(zfs_cmd_t *zc)
1347 nvlist_t *tryconfig, *config;
1350 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1351 zc->zc_iflags, &tryconfig)) != 0)
1354 config = spa_tryimport(tryconfig);
1356 nvlist_free(tryconfig);
1361 error = put_nvlist(zc, config);
1362 nvlist_free(config);
1369 * zc_name name of the pool
1370 * zc_cookie scan func (pool_scan_func_t)
1373 zfs_ioc_pool_scan(zfs_cmd_t *zc)
1378 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1381 if (zc->zc_cookie == POOL_SCAN_NONE)
1382 error = spa_scan_stop(spa);
1384 error = spa_scan(spa, zc->zc_cookie);
1386 spa_close(spa, FTAG);
1392 zfs_ioc_pool_freeze(zfs_cmd_t *zc)
1397 error = spa_open(zc->zc_name, &spa, FTAG);
1400 spa_close(spa, FTAG);
1406 zfs_ioc_pool_upgrade(zfs_cmd_t *zc)
1411 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1414 if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) {
1415 spa_close(spa, FTAG);
1419 spa_upgrade(spa, zc->zc_cookie);
1420 spa_close(spa, FTAG);
1426 zfs_ioc_pool_get_history(zfs_cmd_t *zc)
1433 if ((size = zc->zc_history_len) == 0)
1436 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1439 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
1440 spa_close(spa, FTAG);
1444 hist_buf = vmem_alloc(size, KM_SLEEP);
1445 if ((error = spa_history_get(spa, &zc->zc_history_offset,
1446 &zc->zc_history_len, hist_buf)) == 0) {
1447 error = ddi_copyout(hist_buf,
1448 (void *)(uintptr_t)zc->zc_history,
1449 zc->zc_history_len, zc->zc_iflags);
1452 spa_close(spa, FTAG);
1453 vmem_free(hist_buf, size);
1458 zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
1462 if ((error = dsl_dsobj_to_dsname(zc->zc_name,zc->zc_obj,zc->zc_value)))
1470 * zc_name name of filesystem
1471 * zc_obj object to find
1474 * zc_value name of object
1477 zfs_ioc_obj_to_path(zfs_cmd_t *zc)
1482 /* XXX reading from objset not owned */
1483 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1485 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1486 dmu_objset_rele(os, FTAG);
1489 error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value,
1490 sizeof (zc->zc_value));
1491 dmu_objset_rele(os, FTAG);
1498 * zc_name name of filesystem
1499 * zc_obj object to find
1502 * zc_stat stats on object
1503 * zc_value path to object
1506 zfs_ioc_obj_to_stats(zfs_cmd_t *zc)
1511 /* XXX reading from objset not owned */
1512 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
1514 if (dmu_objset_type(os) != DMU_OST_ZFS) {
1515 dmu_objset_rele(os, FTAG);
1518 error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value,
1519 sizeof (zc->zc_value));
1520 dmu_objset_rele(os, FTAG);
1526 zfs_ioc_vdev_add(zfs_cmd_t *zc)
1530 nvlist_t *config, **l2cache, **spares;
1531 uint_t nl2cache = 0, nspares = 0;
1533 error = spa_open(zc->zc_name, &spa, FTAG);
1537 error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1538 zc->zc_iflags, &config);
1539 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
1540 &l2cache, &nl2cache);
1542 (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
1546 * A root pool with concatenated devices is not supported.
1547 * Thus, can not add a device to a root pool.
1549 * Intent log device can not be added to a rootpool because
1550 * during mountroot, zil is replayed, a seperated log device
1551 * can not be accessed during the mountroot time.
1553 * l2cache and spare devices are ok to be added to a rootpool.
1555 if (spa_bootfs(spa) != 0 && nl2cache == 0 && nspares == 0) {
1556 nvlist_free(config);
1557 spa_close(spa, FTAG);
1562 error = spa_vdev_add(spa, config);
1563 nvlist_free(config);
1565 spa_close(spa, FTAG);
1571 * zc_name name of the pool
1572 * zc_nvlist_conf nvlist of devices to remove
1573 * zc_cookie to stop the remove?
1576 zfs_ioc_vdev_remove(zfs_cmd_t *zc)
1581 error = spa_open(zc->zc_name, &spa, FTAG);
1584 error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE);
1585 spa_close(spa, FTAG);
1590 zfs_ioc_vdev_set_state(zfs_cmd_t *zc)
1594 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
1596 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1598 switch (zc->zc_cookie) {
1599 case VDEV_STATE_ONLINE:
1600 error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate);
1603 case VDEV_STATE_OFFLINE:
1604 error = vdev_offline(spa, zc->zc_guid, zc->zc_obj);
1607 case VDEV_STATE_FAULTED:
1608 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1609 zc->zc_obj != VDEV_AUX_EXTERNAL)
1610 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1612 error = vdev_fault(spa, zc->zc_guid, zc->zc_obj);
1615 case VDEV_STATE_DEGRADED:
1616 if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
1617 zc->zc_obj != VDEV_AUX_EXTERNAL)
1618 zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
1620 error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj);
1626 zc->zc_cookie = newstate;
1627 spa_close(spa, FTAG);
1632 zfs_ioc_vdev_attach(zfs_cmd_t *zc)
1635 int replacing = zc->zc_cookie;
1639 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1642 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1643 zc->zc_iflags, &config)) == 0) {
1644 error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
1645 nvlist_free(config);
1648 spa_close(spa, FTAG);
1653 zfs_ioc_vdev_detach(zfs_cmd_t *zc)
1658 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1661 error = spa_vdev_detach(spa, zc->zc_guid, 0, B_FALSE);
1663 spa_close(spa, FTAG);
1668 zfs_ioc_vdev_split(zfs_cmd_t *zc)
1671 nvlist_t *config, *props = NULL;
1673 boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT);
1675 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
1678 if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
1679 zc->zc_iflags, &config))) {
1680 spa_close(spa, FTAG);
1684 if (zc->zc_nvlist_src_size != 0 && (error =
1685 get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
1686 zc->zc_iflags, &props))) {
1687 spa_close(spa, FTAG);
1688 nvlist_free(config);
1692 error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp);
1694 spa_close(spa, FTAG);
1696 nvlist_free(config);
1703 zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
1706 char *path = zc->zc_value;
1707 uint64_t guid = zc->zc_guid;
1710 error = spa_open(zc->zc_name, &spa, FTAG);
1714 error = spa_vdev_setpath(spa, guid, path);
1715 spa_close(spa, FTAG);
1720 zfs_ioc_vdev_setfru(zfs_cmd_t *zc)
1723 char *fru = zc->zc_value;
1724 uint64_t guid = zc->zc_guid;
1727 error = spa_open(zc->zc_name, &spa, FTAG);
1731 error = spa_vdev_setfru(spa, guid, fru);
1732 spa_close(spa, FTAG);
1737 zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os)
1742 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1744 if (zc->zc_nvlist_dst != 0 &&
1745 (error = dsl_prop_get_all(os, &nv)) == 0) {
1746 dmu_objset_stats(os, nv);
1748 * NB: zvol_get_stats() will read the objset contents,
1749 * which we aren't supposed to do with a
1750 * DS_MODE_USER hold, because it could be
1751 * inconsistent. So this is a bit of a workaround...
1752 * XXX reading with out owning
1754 if (!zc->zc_objset_stats.dds_inconsistent) {
1755 if (dmu_objset_type(os) == DMU_OST_ZVOL)
1756 error = zvol_get_stats(os, nv);
1759 error = put_nvlist(zc, nv);
1768 * zc_name name of filesystem
1769 * zc_nvlist_dst_size size of buffer for property nvlist
1772 * zc_objset_stats stats
1773 * zc_nvlist_dst property nvlist
1774 * zc_nvlist_dst_size size of property nvlist
1777 zfs_ioc_objset_stats(zfs_cmd_t *zc)
1779 objset_t *os = NULL;
1782 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)))
1785 error = zfs_ioc_objset_stats_impl(zc, os);
1787 dmu_objset_rele(os, FTAG);
1794 * zc_name name of filesystem
1795 * zc_nvlist_dst_size size of buffer for property nvlist
1798 * zc_nvlist_dst received property nvlist
1799 * zc_nvlist_dst_size size of received property nvlist
1801 * Gets received properties (distinct from local properties on or after
1802 * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from
1803 * local property values.
1806 zfs_ioc_objset_recvd_props(zfs_cmd_t *zc)
1808 objset_t *os = NULL;
1812 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)))
1816 * Without this check, we would return local property values if the
1817 * caller has not already received properties on or after
1818 * SPA_VERSION_RECVD_PROPS.
1820 if (!dsl_prop_get_hasrecvd(os)) {
1821 dmu_objset_rele(os, FTAG);
1825 if (zc->zc_nvlist_dst != 0 &&
1826 (error = dsl_prop_get_received(os, &nv)) == 0) {
1827 error = put_nvlist(zc, nv);
1831 dmu_objset_rele(os, FTAG);
1836 nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop)
1842 * zfs_get_zplprop() will either find a value or give us
1843 * the default value (if there is one).
1845 if ((error = zfs_get_zplprop(os, prop, &value)) != 0)
1847 VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0);
1853 * zc_name name of filesystem
1854 * zc_nvlist_dst_size size of buffer for zpl property nvlist
1857 * zc_nvlist_dst zpl property nvlist
1858 * zc_nvlist_dst_size size of zpl property nvlist
1861 zfs_ioc_objset_zplprops(zfs_cmd_t *zc)
1866 /* XXX reading without owning */
1867 if ((err = dmu_objset_hold(zc->zc_name, FTAG, &os)))
1870 dmu_objset_fast_stat(os, &zc->zc_objset_stats);
1873 * NB: nvl_add_zplprop() will read the objset contents,
1874 * which we aren't supposed to do with a DS_MODE_USER
1875 * hold, because it could be inconsistent.
1877 if (zc->zc_nvlist_dst != 0 &&
1878 !zc->zc_objset_stats.dds_inconsistent &&
1879 dmu_objset_type(os) == DMU_OST_ZFS) {
1882 VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
1883 if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 &&
1884 (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 &&
1885 (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 &&
1886 (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0)
1887 err = put_nvlist(zc, nv);
1892 dmu_objset_rele(os, FTAG);
1897 dataset_name_hidden(const char *name)
1900 * Skip over datasets that are not visible in this zone,
1901 * internal datasets (which have a $ in their name), and
1902 * temporary datasets (which have a % in their name).
1904 if (strchr(name, '$') != NULL)
1906 if (strchr(name, '%') != NULL)
1908 if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL))
1915 * zc_name name of filesystem
1916 * zc_cookie zap cursor
1917 * zc_nvlist_dst_size size of buffer for property nvlist
1920 * zc_name name of next filesystem
1921 * zc_cookie zap cursor
1922 * zc_objset_stats stats
1923 * zc_nvlist_dst property nvlist
1924 * zc_nvlist_dst_size size of property nvlist
1927 zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
1932 size_t orig_len = strlen(zc->zc_name);
1935 if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os))) {
1936 if (error == ENOENT)
1941 p = strrchr(zc->zc_name, '/');
1942 if (p == NULL || p[1] != '\0')
1943 (void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
1944 p = zc->zc_name + strlen(zc->zc_name);
1947 * Pre-fetch the datasets. dmu_objset_prefetch() always returns 0
1948 * but is not declared void because its called by dmu_objset_find().
1950 if (zc->zc_cookie == 0) {
1951 uint64_t cookie = 0;
1952 int len = sizeof (zc->zc_name) - (p - zc->zc_name);
1954 while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0)
1955 (void) dmu_objset_prefetch(p, NULL);
1959 error = dmu_dir_list_next(os,
1960 sizeof (zc->zc_name) - (p - zc->zc_name), p,
1961 NULL, &zc->zc_cookie);
1962 if (error == ENOENT)
1964 } while (error == 0 && dataset_name_hidden(zc->zc_name) &&
1965 !(zc->zc_iflags & FKIOCTL));
1966 dmu_objset_rele(os, FTAG);
1969 * If it's an internal dataset (ie. with a '$' in its name),
1970 * don't try to get stats for it, otherwise we'll return ENOENT.
1972 if (error == 0 && strchr(zc->zc_name, '$') == NULL) {
1973 error = zfs_ioc_objset_stats(zc); /* fill in the stats */
1974 if (error == ENOENT) {
1975 /* We lost a race with destroy, get the next one. */
1976 zc->zc_name[orig_len] = '\0';
1985 * zc_name name of filesystem
1986 * zc_cookie zap cursor
1987 * zc_nvlist_dst_size size of buffer for property nvlist
1990 * zc_name name of next snapshot
1991 * zc_objset_stats stats
1992 * zc_nvlist_dst property nvlist
1993 * zc_nvlist_dst_size size of property nvlist
1996 zfs_ioc_snapshot_list_next(zfs_cmd_t *zc)
2002 if (zc->zc_cookie == 0)
2003 (void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch,
2004 NULL, DS_FIND_SNAPSHOTS);
2006 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
2008 return (error == ENOENT ? ESRCH : error);
2011 * A dataset name of maximum length cannot have any snapshots,
2012 * so exit immediately.
2014 if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) {
2015 dmu_objset_rele(os, FTAG);
2019 error = dmu_snapshot_list_next(os,
2020 sizeof (zc->zc_name) - strlen(zc->zc_name),
2021 zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie,
2026 dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool;
2029 * Since we probably don't have a hold on this snapshot,
2030 * it's possible that the objsetid could have been destroyed
2031 * and reused for a new objset. It's OK if this happens during
2032 * a zfs send operation, since the new createtxg will be
2033 * beyond the range we're interested in.
2035 rw_enter(&dp->dp_config_rwlock, RW_READER);
2036 error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds);
2037 rw_exit(&dp->dp_config_rwlock);
2039 if (error == ENOENT) {
2040 /* Racing with destroy, get the next one. */
2041 *strchr(zc->zc_name, '@') = '\0';
2042 dmu_objset_rele(os, FTAG);
2048 error = dmu_objset_from_ds(ds, &ossnap);
2050 error = zfs_ioc_objset_stats_impl(zc, ossnap);
2051 dsl_dataset_rele(ds, FTAG);
2053 } else if (error == ENOENT) {
2057 dmu_objset_rele(os, FTAG);
2058 /* if we failed, undo the @ that we tacked on to zc_name */
2060 *strchr(zc->zc_name, '@') = '\0';
2065 zfs_prop_set_userquota(const char *dsname, nvpair_t *pair)
2067 const char *propname = nvpair_name(pair);
2069 unsigned int vallen;
2072 zfs_userquota_prop_t type;
2078 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2080 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2081 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2087 * A correctly constructed propname is encoded as
2088 * userquota@<rid>-<domain>.
2090 if ((dash = strchr(propname, '-')) == NULL ||
2091 nvpair_value_uint64_array(pair, &valary, &vallen) != 0 ||
2100 err = zfs_sb_hold(dsname, FTAG, &zsb, B_FALSE);
2102 err = zfs_set_userquota(zsb, type, domain, rid, quota);
2103 zfs_sb_rele(zsb, FTAG);
2110 * If the named property is one that has a special function to set its value,
2111 * return 0 on success and a positive error code on failure; otherwise if it is
2112 * not one of the special properties handled by this function, return -1.
2114 * XXX: It would be better for callers of the property interface if we handled
2115 * these special cases in dsl_prop.c (in the dsl layer).
2118 zfs_prop_set_special(const char *dsname, zprop_source_t source,
2121 const char *propname = nvpair_name(pair);
2122 zfs_prop_t prop = zfs_name_to_prop(propname);
2126 if (prop == ZPROP_INVAL) {
2127 if (zfs_prop_userquota(propname))
2128 return (zfs_prop_set_userquota(dsname, pair));
2132 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2134 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2135 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2139 if (zfs_prop_get_type(prop) == PROP_TYPE_STRING)
2142 VERIFY(0 == nvpair_value_uint64(pair, &intval));
2145 case ZFS_PROP_QUOTA:
2146 err = dsl_dir_set_quota(dsname, source, intval);
2148 case ZFS_PROP_REFQUOTA:
2149 err = dsl_dataset_set_quota(dsname, source, intval);
2151 case ZFS_PROP_RESERVATION:
2152 err = dsl_dir_set_reservation(dsname, source, intval);
2154 case ZFS_PROP_REFRESERVATION:
2155 err = dsl_dataset_set_reservation(dsname, source, intval);
2157 case ZFS_PROP_VOLSIZE:
2158 err = zvol_set_volsize(dsname, intval);
2160 case ZFS_PROP_VERSION:
2164 if ((err = zfs_sb_hold(dsname, FTAG, &zsb, B_TRUE)) != 0)
2167 err = zfs_set_version(zsb, intval);
2168 zfs_sb_rele(zsb, FTAG);
2170 if (err == 0 && intval >= ZPL_VERSION_USERSPACE) {
2173 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
2174 (void) strcpy(zc->zc_name, dsname);
2175 (void) zfs_ioc_userspace_upgrade(zc);
2176 kmem_free(zc, sizeof (zfs_cmd_t));
2189 * This function is best effort. If it fails to set any of the given properties,
2190 * it continues to set as many as it can and returns the first error
2191 * encountered. If the caller provides a non-NULL errlist, it also gives the
2192 * complete list of names of all the properties it failed to set along with the
2193 * corresponding error numbers. The caller is responsible for freeing the
2196 * If every property is set successfully, zero is returned and the list pointed
2197 * at by errlist is NULL.
2200 zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl,
2208 nvlist_t *genericnvl;
2212 VERIFY(nvlist_alloc(&genericnvl, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2213 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2214 VERIFY(nvlist_alloc(&retrynvl, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2218 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2219 const char *propname = nvpair_name(pair);
2220 zfs_prop_t prop = zfs_name_to_prop(propname);
2223 /* decode the property value */
2225 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2227 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2228 if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2233 /* Validate value type */
2234 if (err == 0 && prop == ZPROP_INVAL) {
2235 if (zfs_prop_user(propname)) {
2236 if (nvpair_type(propval) != DATA_TYPE_STRING)
2238 } else if (zfs_prop_userquota(propname)) {
2239 if (nvpair_type(propval) !=
2240 DATA_TYPE_UINT64_ARRAY)
2243 } else if (err == 0) {
2244 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2245 if (zfs_prop_get_type(prop) != PROP_TYPE_STRING)
2247 } else if (nvpair_type(propval) == DATA_TYPE_UINT64) {
2250 VERIFY(nvpair_value_uint64(propval,
2253 switch (zfs_prop_get_type(prop)) {
2254 case PROP_TYPE_NUMBER:
2256 case PROP_TYPE_STRING:
2259 case PROP_TYPE_INDEX:
2260 if (zfs_prop_index_to_string(prop,
2261 intval, &unused) != 0)
2266 "unknown property type");
2273 /* Validate permissions */
2275 err = zfs_check_settable(dsname, pair, CRED());
2278 err = zfs_prop_set_special(dsname, source, pair);
2281 * For better performance we build up a list of
2282 * properties to set in a single transaction.
2284 err = nvlist_add_nvpair(genericnvl, pair);
2285 } else if (err != 0 && nvl != retrynvl) {
2287 * This may be a spurious error caused by
2288 * receiving quota and reservation out of order.
2289 * Try again in a second pass.
2291 err = nvlist_add_nvpair(retrynvl, pair);
2296 VERIFY(nvlist_add_int32(errors, propname, err) == 0);
2299 if (nvl != retrynvl && !nvlist_empty(retrynvl)) {
2304 if (!nvlist_empty(genericnvl) &&
2305 dsl_props_set(dsname, source, genericnvl) != 0) {
2307 * If this fails, we still want to set as many properties as we
2308 * can, so try setting them individually.
2311 while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) {
2312 const char *propname = nvpair_name(pair);
2316 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
2318 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
2319 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
2323 if (nvpair_type(propval) == DATA_TYPE_STRING) {
2324 VERIFY(nvpair_value_string(propval,
2326 err = dsl_prop_set(dsname, propname, source, 1,
2327 strlen(strval) + 1, strval);
2329 VERIFY(nvpair_value_uint64(propval,
2331 err = dsl_prop_set(dsname, propname, source, 8,
2336 VERIFY(nvlist_add_int32(errors, propname,
2341 nvlist_free(genericnvl);
2342 nvlist_free(retrynvl);
2344 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
2345 nvlist_free(errors);
2348 VERIFY(nvpair_value_int32(pair, &rv) == 0);
2351 if (errlist == NULL)
2352 nvlist_free(errors);
2360 * Check that all the properties are valid user properties.
2363 zfs_check_userprops(char *fsname, nvlist_t *nvl)
2365 nvpair_t *pair = NULL;
2368 while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
2369 const char *propname = nvpair_name(pair);
2372 if (!zfs_prop_user(propname) ||
2373 nvpair_type(pair) != DATA_TYPE_STRING)
2376 if ((error = zfs_secpolicy_write_perms(fsname,
2377 ZFS_DELEG_PERM_USERPROP, CRED())))
2380 if (strlen(propname) >= ZAP_MAXNAMELEN)
2381 return (ENAMETOOLONG);
2383 VERIFY(nvpair_value_string(pair, &valstr) == 0);
2384 if (strlen(valstr) >= ZAP_MAXVALUELEN)
2391 props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops)
2395 VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2398 while ((pair = nvlist_next_nvpair(props, pair)) != NULL) {
2399 if (nvlist_exists(skipped, nvpair_name(pair)))
2402 VERIFY(nvlist_add_nvpair(*newprops, pair) == 0);
2407 clear_received_props(objset_t *os, const char *fs, nvlist_t *props,
2411 nvlist_t *cleared_props = NULL;
2412 props_skip(props, skipped, &cleared_props);
2413 if (!nvlist_empty(cleared_props)) {
2415 * Acts on local properties until the dataset has received
2416 * properties at least once on or after SPA_VERSION_RECVD_PROPS.
2418 zprop_source_t flags = (ZPROP_SRC_NONE |
2419 (dsl_prop_get_hasrecvd(os) ? ZPROP_SRC_RECEIVED : 0));
2420 err = zfs_set_prop_nvlist(fs, flags, cleared_props, NULL);
2422 nvlist_free(cleared_props);
2428 * zc_name name of filesystem
2429 * zc_value name of property to set
2430 * zc_nvlist_src{_size} nvlist of properties to apply
2431 * zc_cookie received properties flag
2434 * zc_nvlist_dst{_size} error for each unapplied received property
2437 zfs_ioc_set_prop(zfs_cmd_t *zc)
2440 boolean_t received = zc->zc_cookie;
2441 zprop_source_t source = (received ? ZPROP_SRC_RECEIVED :
2443 nvlist_t *errors = NULL;
2446 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2447 zc->zc_iflags, &nvl)) != 0)
2451 nvlist_t *origprops;
2454 if (dmu_objset_hold(zc->zc_name, FTAG, &os) == 0) {
2455 if (dsl_prop_get_received(os, &origprops) == 0) {
2456 (void) clear_received_props(os,
2457 zc->zc_name, origprops, nvl);
2458 nvlist_free(origprops);
2461 dsl_prop_set_hasrecvd(os);
2462 dmu_objset_rele(os, FTAG);
2466 error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, &errors);
2468 if (zc->zc_nvlist_dst != 0 && errors != NULL) {
2469 (void) put_nvlist(zc, errors);
2472 nvlist_free(errors);
2479 * zc_name name of filesystem
2480 * zc_value name of property to inherit
2481 * zc_cookie revert to received value if TRUE
2486 zfs_ioc_inherit_prop(zfs_cmd_t *zc)
2488 const char *propname = zc->zc_value;
2489 zfs_prop_t prop = zfs_name_to_prop(propname);
2490 boolean_t received = zc->zc_cookie;
2491 zprop_source_t source = (received
2492 ? ZPROP_SRC_NONE /* revert to received value, if any */
2493 : ZPROP_SRC_INHERITED); /* explicitly inherit */
2502 * zfs_prop_set_special() expects properties in the form of an
2503 * nvpair with type info.
2505 if (prop == ZPROP_INVAL) {
2506 if (!zfs_prop_user(propname))
2509 type = PROP_TYPE_STRING;
2510 } else if (prop == ZFS_PROP_VOLSIZE ||
2511 prop == ZFS_PROP_VERSION) {
2514 type = zfs_prop_get_type(prop);
2517 VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0);
2520 case PROP_TYPE_STRING:
2521 VERIFY(0 == nvlist_add_string(dummy, propname, ""));
2523 case PROP_TYPE_NUMBER:
2524 case PROP_TYPE_INDEX:
2525 VERIFY(0 == nvlist_add_uint64(dummy, propname, 0));
2532 pair = nvlist_next_nvpair(dummy, NULL);
2533 err = zfs_prop_set_special(zc->zc_name, source, pair);
2536 return (err); /* special property already handled */
2539 * Only check this in the non-received case. We want to allow
2540 * 'inherit -S' to revert non-inheritable properties like quota
2541 * and reservation to the received or default values even though
2542 * they are not considered inheritable.
2544 if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop))
2548 /* the property name has been validated by zfs_secpolicy_inherit() */
2549 return (dsl_prop_set(zc->zc_name, zc->zc_value, source, 0, 0, NULL));
2553 zfs_ioc_pool_set_props(zfs_cmd_t *zc)
2560 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2561 zc->zc_iflags, &props)))
2565 * If the only property is the configfile, then just do a spa_lookup()
2566 * to handle the faulted case.
2568 pair = nvlist_next_nvpair(props, NULL);
2569 if (pair != NULL && strcmp(nvpair_name(pair),
2570 zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 &&
2571 nvlist_next_nvpair(props, pair) == NULL) {
2572 mutex_enter(&spa_namespace_lock);
2573 if ((spa = spa_lookup(zc->zc_name)) != NULL) {
2574 spa_configfile_set(spa, props, B_FALSE);
2575 spa_config_sync(spa, B_FALSE, B_TRUE);
2577 mutex_exit(&spa_namespace_lock);
2584 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2589 error = spa_prop_set(spa, props);
2592 spa_close(spa, FTAG);
2598 zfs_ioc_pool_get_props(zfs_cmd_t *zc)
2602 nvlist_t *nvp = NULL;
2604 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
2606 * If the pool is faulted, there may be properties we can still
2607 * get (such as altroot and cachefile), so attempt to get them
2610 mutex_enter(&spa_namespace_lock);
2611 if ((spa = spa_lookup(zc->zc_name)) != NULL)
2612 error = spa_prop_get(spa, &nvp);
2613 mutex_exit(&spa_namespace_lock);
2615 error = spa_prop_get(spa, &nvp);
2616 spa_close(spa, FTAG);
2619 if (error == 0 && zc->zc_nvlist_dst != 0)
2620 error = put_nvlist(zc, nvp);
2630 * zc_name name of volume
2635 zfs_ioc_create_minor(zfs_cmd_t *zc)
2637 return (zvol_create_minor(zc->zc_name));
2642 * zc_name name of volume
2647 zfs_ioc_remove_minor(zfs_cmd_t *zc)
2649 return (zvol_remove_minor(zc->zc_name));
2654 * zc_name name of filesystem
2655 * zc_nvlist_src{_size} nvlist of delegated permissions
2656 * zc_perm_action allow/unallow flag
2661 zfs_ioc_set_fsacl(zfs_cmd_t *zc)
2664 nvlist_t *fsaclnv = NULL;
2666 if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2667 zc->zc_iflags, &fsaclnv)) != 0)
2671 * Verify nvlist is constructed correctly
2673 if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
2674 nvlist_free(fsaclnv);
2679 * If we don't have PRIV_SYS_MOUNT, then validate
2680 * that user is allowed to hand out each permission in
2684 error = secpolicy_zfs(CRED());
2686 if (zc->zc_perm_action == B_FALSE) {
2687 error = dsl_deleg_can_allow(zc->zc_name,
2690 error = dsl_deleg_can_unallow(zc->zc_name,
2696 error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action);
2698 nvlist_free(fsaclnv);
2704 * zc_name name of filesystem
2707 * zc_nvlist_src{_size} nvlist of delegated permissions
2710 zfs_ioc_get_fsacl(zfs_cmd_t *zc)
2715 if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) {
2716 error = put_nvlist(zc, nvp);
2723 #ifdef HAVE_SNAPSHOT
2725 * Search the vfs list for a specified resource. Returns a pointer to it
2726 * or NULL if no suitable entry is found. The caller of this routine
2727 * is responsible for releasing the returned vfs pointer.
2730 zfs_get_vfs(const char *resource)
2733 struct vfs *vfs_found = NULL;
2735 vfs_list_read_lock();
2738 if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) {
2743 vfsp = vfsp->vfs_next;
2744 } while (vfsp != rootvfs);
2748 #endif /* HAVE_SNAPSHOT */
2752 zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
2754 zfs_creat_t *zct = arg;
2756 zfs_create_fs(os, cr, zct->zct_zplprops, tx);
2759 #define ZFS_PROP_UNDEFINED ((uint64_t)-1)
2763 * createprops list of properties requested by creator
2764 * default_zplver zpl version to use if unspecified in createprops
2765 * fuids_ok fuids allowed in this version of the spa?
2766 * os parent objset pointer (NULL if root fs)
2769 * zplprops values for the zplprops we attach to the master node object
2770 * is_ci true if requested file system will be purely case-insensitive
2772 * Determine the settings for utf8only, normalization and
2773 * casesensitivity. Specific values may have been requested by the
2774 * creator and/or we can inherit values from the parent dataset. If
2775 * the file system is of too early a vintage, a creator can not
2776 * request settings for these properties, even if the requested
2777 * setting is the default value. We don't actually want to create dsl
2778 * properties for these, so remove them from the source nvlist after
2782 zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver,
2783 boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops,
2784 nvlist_t *zplprops, boolean_t *is_ci)
2786 uint64_t sense = ZFS_PROP_UNDEFINED;
2787 uint64_t norm = ZFS_PROP_UNDEFINED;
2788 uint64_t u8 = ZFS_PROP_UNDEFINED;
2790 ASSERT(zplprops != NULL);
2793 * Pull out creator prop choices, if any.
2796 (void) nvlist_lookup_uint64(createprops,
2797 zfs_prop_to_name(ZFS_PROP_VERSION), &zplver);
2798 (void) nvlist_lookup_uint64(createprops,
2799 zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm);
2800 (void) nvlist_remove_all(createprops,
2801 zfs_prop_to_name(ZFS_PROP_NORMALIZE));
2802 (void) nvlist_lookup_uint64(createprops,
2803 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8);
2804 (void) nvlist_remove_all(createprops,
2805 zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
2806 (void) nvlist_lookup_uint64(createprops,
2807 zfs_prop_to_name(ZFS_PROP_CASE), &sense);
2808 (void) nvlist_remove_all(createprops,
2809 zfs_prop_to_name(ZFS_PROP_CASE));
2813 * If the zpl version requested is whacky or the file system
2814 * or pool is version is too "young" to support normalization
2815 * and the creator tried to set a value for one of the props,
2818 if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) ||
2819 (zplver >= ZPL_VERSION_FUID && !fuids_ok) ||
2820 (zplver >= ZPL_VERSION_SA && !sa_ok) ||
2821 (zplver < ZPL_VERSION_NORMALIZATION &&
2822 (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
2823 sense != ZFS_PROP_UNDEFINED)))
2827 * Put the version in the zplprops
2829 VERIFY(nvlist_add_uint64(zplprops,
2830 zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
2832 if (norm == ZFS_PROP_UNDEFINED)
2833 VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0);
2834 VERIFY(nvlist_add_uint64(zplprops,
2835 zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
2838 * If we're normalizing, names must always be valid UTF-8 strings.
2842 if (u8 == ZFS_PROP_UNDEFINED)
2843 VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0);
2844 VERIFY(nvlist_add_uint64(zplprops,
2845 zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
2847 if (sense == ZFS_PROP_UNDEFINED)
2848 VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0);
2849 VERIFY(nvlist_add_uint64(zplprops,
2850 zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
2853 *is_ci = (sense == ZFS_CASE_INSENSITIVE);
2859 zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
2860 nvlist_t *zplprops, boolean_t *is_ci)
2862 boolean_t fuids_ok, sa_ok;
2863 uint64_t zplver = ZPL_VERSION;
2864 objset_t *os = NULL;
2865 char parentname[MAXNAMELEN];
2871 (void) strlcpy(parentname, dataset, sizeof (parentname));
2872 cp = strrchr(parentname, '/');
2876 if ((error = spa_open(dataset, &spa, FTAG)) != 0)
2879 spa_vers = spa_version(spa);
2880 spa_close(spa, FTAG);
2882 zplver = zfs_zpl_version_map(spa_vers);
2883 fuids_ok = (zplver >= ZPL_VERSION_FUID);
2884 sa_ok = (zplver >= ZPL_VERSION_SA);
2887 * Open parent object set so we can inherit zplprop values.
2889 if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0)
2892 error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops,
2894 dmu_objset_rele(os, FTAG);
2899 zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops,
2900 nvlist_t *zplprops, boolean_t *is_ci)
2904 uint64_t zplver = ZPL_VERSION;
2907 zplver = zfs_zpl_version_map(spa_vers);
2908 fuids_ok = (zplver >= ZPL_VERSION_FUID);
2909 sa_ok = (zplver >= ZPL_VERSION_SA);
2911 error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok,
2912 createprops, zplprops, is_ci);
2918 * zc_objset_type type of objset to create (fs vs zvol)
2919 * zc_name name of new objset
2920 * zc_value name of snapshot to clone from (may be empty)
2921 * zc_nvlist_src{_size} nvlist of properties to apply
2926 zfs_ioc_create(zfs_cmd_t *zc)
2931 nvlist_t *nvprops = NULL;
2932 void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
2933 dmu_objset_type_t type = zc->zc_objset_type;
2938 cbfunc = zfs_create_cb;
2942 cbfunc = zvol_create_cb;
2949 if (strchr(zc->zc_name, '@') ||
2950 strchr(zc->zc_name, '%'))
2953 if (zc->zc_nvlist_src != 0 &&
2954 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
2955 zc->zc_iflags, &nvprops)) != 0)
2958 zct.zct_zplprops = NULL;
2959 zct.zct_props = nvprops;
2961 if (zc->zc_value[0] != '\0') {
2963 * We're creating a clone of an existing snapshot.
2965 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
2966 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) {
2967 nvlist_free(nvprops);
2971 error = dmu_objset_hold(zc->zc_value, FTAG, &clone);
2973 nvlist_free(nvprops);
2977 error = dmu_objset_clone(zc->zc_name, dmu_objset_ds(clone), 0);
2978 dmu_objset_rele(clone, FTAG);
2980 nvlist_free(nvprops);
2984 boolean_t is_insensitive = B_FALSE;
2986 if (cbfunc == NULL) {
2987 nvlist_free(nvprops);
2991 if (type == DMU_OST_ZVOL) {
2992 uint64_t volsize, volblocksize;
2994 if (nvprops == NULL ||
2995 nvlist_lookup_uint64(nvprops,
2996 zfs_prop_to_name(ZFS_PROP_VOLSIZE),
2998 nvlist_free(nvprops);
3002 if ((error = nvlist_lookup_uint64(nvprops,
3003 zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
3004 &volblocksize)) != 0 && error != ENOENT) {
3005 nvlist_free(nvprops);
3010 volblocksize = zfs_prop_default_numeric(
3011 ZFS_PROP_VOLBLOCKSIZE);
3013 if ((error = zvol_check_volblocksize(
3014 volblocksize)) != 0 ||
3015 (error = zvol_check_volsize(volsize,
3016 volblocksize)) != 0) {
3017 nvlist_free(nvprops);
3020 } else if (type == DMU_OST_ZFS) {
3024 * We have to have normalization and
3025 * case-folding flags correct when we do the
3026 * file system creation, so go figure them out
3029 VERIFY(nvlist_alloc(&zct.zct_zplprops,
3030 NV_UNIQUE_NAME, KM_SLEEP) == 0);
3031 error = zfs_fill_zplprops(zc->zc_name, nvprops,
3032 zct.zct_zplprops, &is_insensitive);
3034 nvlist_free(nvprops);
3035 nvlist_free(zct.zct_zplprops);
3039 error = dmu_objset_create(zc->zc_name, type,
3040 is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
3041 nvlist_free(zct.zct_zplprops);
3045 * It would be nice to do this atomically.
3048 error = zfs_set_prop_nvlist(zc->zc_name, ZPROP_SRC_LOCAL,
3051 (void) dmu_objset_destroy(zc->zc_name, B_FALSE);
3053 nvlist_free(nvprops);
3059 * zc_name name of filesystem
3060 * zc_value short name of snapshot
3061 * zc_cookie recursive flag
3062 * zc_nvlist_src[_size] property list
3065 * zc_value short snapname (i.e. part after the '@')
3068 zfs_ioc_snapshot(zfs_cmd_t *zc)
3070 nvlist_t *nvprops = NULL;
3072 boolean_t recursive = zc->zc_cookie;
3074 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
3077 if (zc->zc_nvlist_src != 0 &&
3078 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
3079 zc->zc_iflags, &nvprops)) != 0)
3082 error = zfs_check_userprops(zc->zc_name, nvprops);
3086 if (!nvlist_empty(nvprops) &&
3087 zfs_earlier_version(zc->zc_name, SPA_VERSION_SNAP_PROPS)) {
3092 error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, NULL,
3093 nvprops, recursive, B_FALSE, -1);
3096 nvlist_free(nvprops);
3101 zfs_unmount_snap(const char *name, void *arg)
3103 #ifdef HAVE_SNAPSHOT
3107 char *snapname = arg;
3108 char *fullname = kmem_asprintf("%s@%s", name, snapname);
3109 vfsp = zfs_get_vfs(fullname);
3111 } else if (strchr(name, '@')) {
3112 vfsp = zfs_get_vfs(name);
3117 * Always force the unmount for snapshots.
3119 int flag = MS_FORCE;
3122 if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) {
3127 if ((err = dounmount(vfsp, flag, kcred)) != 0)
3130 #endif /* HAVE_SNAPSHOT */
3136 * zc_name name of filesystem
3137 * zc_value short name of snapshot
3138 * zc_defer_destroy mark for deferred destroy
3143 zfs_ioc_destroy_snaps(zfs_cmd_t *zc)
3147 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
3149 err = dmu_objset_find(zc->zc_name,
3150 zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN);
3153 return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value,
3154 zc->zc_defer_destroy));
3159 * zc_name name of dataset to destroy
3160 * zc_objset_type type of objset
3161 * zc_defer_destroy mark for deferred destroy
3166 zfs_ioc_destroy(zfs_cmd_t *zc)
3169 if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) {
3170 err = zfs_unmount_snap(zc->zc_name, NULL);
3175 err = dmu_objset_destroy(zc->zc_name, zc->zc_defer_destroy);
3176 if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0)
3177 (void) zvol_remove_minor(zc->zc_name);
3183 * zc_name name of dataset to rollback (to most recent snapshot)
3188 zfs_ioc_rollback(zfs_cmd_t *zc)
3190 dsl_dataset_t *ds, *clone;
3195 error = dsl_dataset_hold(zc->zc_name, FTAG, &ds);
3199 /* must not be a snapshot */
3200 if (dsl_dataset_is_snapshot(ds)) {
3201 dsl_dataset_rele(ds, FTAG);
3205 /* must have a most recent snapshot */
3206 if (ds->ds_phys->ds_prev_snap_txg < TXG_INITIAL) {
3207 dsl_dataset_rele(ds, FTAG);
3212 * Create clone of most recent snapshot.
3214 clone_name = kmem_asprintf("%s/%%rollback", zc->zc_name);
3215 error = dmu_objset_clone(clone_name, ds->ds_prev, DS_FLAG_INCONSISTENT);
3219 error = dsl_dataset_own(clone_name, B_TRUE, FTAG, &clone);
3226 if (get_zfs_sb(zc->zc_name, &zsb) == 0) {
3227 error = zfs_suspend_fs(zsb);
3231 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) {
3232 error = dsl_dataset_clone_swap(clone, ds,
3234 dsl_dataset_disown(ds, FTAG);
3239 resume_err = zfs_resume_fs(zsb, zc->zc_name);
3240 error = error ? error : resume_err;
3242 deactivate_super(zsb->z_sb);
3244 if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) {
3245 error = dsl_dataset_clone_swap(clone, ds, B_TRUE);
3246 dsl_dataset_disown(ds, FTAG);
3254 * Destroy clone (which also closes it).
3256 (void) dsl_dataset_destroy(clone, FTAG, B_FALSE);
3259 strfree(clone_name);
3261 dsl_dataset_rele(ds, FTAG);
3267 * zc_name old name of dataset
3268 * zc_value new name of dataset
3269 * zc_cookie recursive flag (only valid for snapshots)
3274 zfs_ioc_rename(zfs_cmd_t *zc)
3276 boolean_t recursive = zc->zc_cookie & 1;
3279 zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
3280 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3281 strchr(zc->zc_value, '%'))
3285 * Unmount snapshot unless we're doing a recursive rename,
3286 * in which case the dataset code figures out which snapshots
3289 if (!recursive && strchr(zc->zc_name, '@') != NULL &&
3290 zc->zc_objset_type == DMU_OST_ZFS) {
3291 err = zfs_unmount_snap(zc->zc_name, NULL);
3296 err = dmu_objset_rename(zc->zc_name, zc->zc_value, recursive);
3297 if ((err == 0) && (zc->zc_objset_type == DMU_OST_ZVOL)) {
3298 (void) zvol_remove_minor(zc->zc_name);
3299 (void) zvol_create_minor(zc->zc_value);
3306 zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr)
3308 const char *propname = nvpair_name(pair);
3309 boolean_t issnap = (strchr(dsname, '@') != NULL);
3310 zfs_prop_t prop = zfs_name_to_prop(propname);
3314 if (prop == ZPROP_INVAL) {
3315 if (zfs_prop_user(propname)) {
3316 if ((err = zfs_secpolicy_write_perms(dsname,
3317 ZFS_DELEG_PERM_USERPROP, cr)))
3322 if (!issnap && zfs_prop_userquota(propname)) {
3323 const char *perm = NULL;
3324 const char *uq_prefix =
3325 zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA];
3326 const char *gq_prefix =
3327 zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA];
3329 if (strncmp(propname, uq_prefix,
3330 strlen(uq_prefix)) == 0) {
3331 perm = ZFS_DELEG_PERM_USERQUOTA;
3332 } else if (strncmp(propname, gq_prefix,
3333 strlen(gq_prefix)) == 0) {
3334 perm = ZFS_DELEG_PERM_GROUPQUOTA;
3336 /* USERUSED and GROUPUSED are read-only */
3340 if ((err = zfs_secpolicy_write_perms(dsname, perm, cr)))
3351 if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
3353 * dsl_prop_get_all_impl() returns properties in this
3357 VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
3358 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3363 * Check that this value is valid for this pool version
3366 case ZFS_PROP_COMPRESSION:
3368 * If the user specified gzip compression, make sure
3369 * the SPA supports it. We ignore any errors here since
3370 * we'll catch them later.
3372 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3373 nvpair_value_uint64(pair, &intval) == 0) {
3374 if (intval >= ZIO_COMPRESS_GZIP_1 &&
3375 intval <= ZIO_COMPRESS_GZIP_9 &&
3376 zfs_earlier_version(dsname,
3377 SPA_VERSION_GZIP_COMPRESSION)) {
3381 if (intval == ZIO_COMPRESS_ZLE &&
3382 zfs_earlier_version(dsname,
3383 SPA_VERSION_ZLE_COMPRESSION))
3387 * If this is a bootable dataset then
3388 * verify that the compression algorithm
3389 * is supported for booting. We must return
3390 * something other than ENOTSUP since it
3391 * implies a downrev pool version.
3393 if (zfs_is_bootfs(dsname) &&
3394 !BOOTFS_COMPRESS_VALID(intval)) {
3400 case ZFS_PROP_COPIES:
3401 if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS))
3405 case ZFS_PROP_DEDUP:
3406 if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP))
3410 case ZFS_PROP_SHARESMB:
3411 if (zpl_earlier_version(dsname, ZPL_VERSION_FUID))
3415 case ZFS_PROP_ACLINHERIT:
3416 if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
3417 nvpair_value_uint64(pair, &intval) == 0) {
3418 if (intval == ZFS_ACL_PASSTHROUGH_X &&
3419 zfs_earlier_version(dsname,
3420 SPA_VERSION_PASSTHROUGH_X))
3428 return (zfs_secpolicy_setprop(dsname, prop, pair, CRED()));
3432 * Removes properties from the given props list that fail permission checks
3433 * needed to clear them and to restore them in case of a receive error. For each
3434 * property, make sure we have both set and inherit permissions.
3436 * Returns the first error encountered if any permission checks fail. If the
3437 * caller provides a non-NULL errlist, it also gives the complete list of names
3438 * of all the properties that failed a permission check along with the
3439 * corresponding error numbers. The caller is responsible for freeing the
3442 * If every property checks out successfully, zero is returned and the list
3443 * pointed at by errlist is NULL.
3446 zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist)
3449 nvpair_t *pair, *next_pair;
3456 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
3458 zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
3459 (void) strcpy(zc->zc_name, dataset);
3460 pair = nvlist_next_nvpair(props, NULL);
3461 while (pair != NULL) {
3462 next_pair = nvlist_next_nvpair(props, pair);
3464 (void) strcpy(zc->zc_value, nvpair_name(pair));
3465 if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 ||
3466 (err = zfs_secpolicy_inherit(zc, CRED())) != 0) {
3467 VERIFY(nvlist_remove_nvpair(props, pair) == 0);
3468 VERIFY(nvlist_add_int32(errors,
3469 zc->zc_value, err) == 0);
3473 kmem_free(zc, sizeof (zfs_cmd_t));
3475 if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
3476 nvlist_free(errors);
3479 VERIFY(nvpair_value_int32(pair, &rv) == 0);
3482 if (errlist == NULL)
3483 nvlist_free(errors);
3491 propval_equals(nvpair_t *p1, nvpair_t *p2)
3493 if (nvpair_type(p1) == DATA_TYPE_NVLIST) {
3494 /* dsl_prop_get_all_impl() format */
3496 VERIFY(nvpair_value_nvlist(p1, &attrs) == 0);
3497 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3501 if (nvpair_type(p2) == DATA_TYPE_NVLIST) {
3503 VERIFY(nvpair_value_nvlist(p2, &attrs) == 0);
3504 VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
3508 if (nvpair_type(p1) != nvpair_type(p2))
3511 if (nvpair_type(p1) == DATA_TYPE_STRING) {
3512 char *valstr1, *valstr2;
3514 VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0);
3515 VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0);
3516 return (strcmp(valstr1, valstr2) == 0);
3518 uint64_t intval1, intval2;
3520 VERIFY(nvpair_value_uint64(p1, &intval1) == 0);
3521 VERIFY(nvpair_value_uint64(p2, &intval2) == 0);
3522 return (intval1 == intval2);
3527 * Remove properties from props if they are not going to change (as determined
3528 * by comparison with origprops). Remove them from origprops as well, since we
3529 * do not need to clear or restore properties that won't change.
3532 props_reduce(nvlist_t *props, nvlist_t *origprops)
3534 nvpair_t *pair, *next_pair;
3536 if (origprops == NULL)
3537 return; /* all props need to be received */
3539 pair = nvlist_next_nvpair(props, NULL);
3540 while (pair != NULL) {
3541 const char *propname = nvpair_name(pair);
3544 next_pair = nvlist_next_nvpair(props, pair);
3546 if ((nvlist_lookup_nvpair(origprops, propname,
3547 &match) != 0) || !propval_equals(pair, match))
3548 goto next; /* need to set received value */
3550 /* don't clear the existing received value */
3551 (void) nvlist_remove_nvpair(origprops, match);
3552 /* don't bother receiving the property */
3553 (void) nvlist_remove_nvpair(props, pair);
3560 static boolean_t zfs_ioc_recv_inject_err;
3565 * zc_name name of containing filesystem
3566 * zc_nvlist_src{_size} nvlist of properties to apply
3567 * zc_value name of snapshot to create
3568 * zc_string name of clone origin (if DRR_FLAG_CLONE)
3569 * zc_cookie file descriptor to recv from
3570 * zc_begin_record the BEGIN record of the stream (not byteswapped)
3571 * zc_guid force flag
3572 * zc_cleanup_fd cleanup-on-exit file descriptor
3573 * zc_action_handle handle for this guid/ds mapping (or zero on first call)
3576 * zc_cookie number of bytes read
3577 * zc_nvlist_dst{_size} error for each unapplied received property
3578 * zc_obj zprop_errflags_t
3579 * zc_action_handle handle for this guid/ds mapping
3582 zfs_ioc_recv(zfs_cmd_t *zc)
3586 dmu_recv_cookie_t drc;
3587 boolean_t force = (boolean_t)zc->zc_guid;
3590 int props_error = 0;
3593 nvlist_t *props = NULL; /* sent properties */
3594 nvlist_t *origprops = NULL; /* existing properties */
3595 objset_t *origin = NULL;
3597 char tofs[ZFS_MAXNAMELEN];
3598 boolean_t first_recvd_props = B_FALSE;
3600 if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
3601 strchr(zc->zc_value, '@') == NULL ||
3602 strchr(zc->zc_value, '%'))
3605 (void) strcpy(tofs, zc->zc_value);
3606 tosnap = strchr(tofs, '@');
3609 if (zc->zc_nvlist_src != 0 &&
3610 (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
3611 zc->zc_iflags, &props)) != 0)
3621 VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
3623 if (props && dmu_objset_hold(tofs, FTAG, &os) == 0) {
3624 if ((spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS) &&
3625 !dsl_prop_get_hasrecvd(os)) {
3626 first_recvd_props = B_TRUE;
3630 * If new received properties are supplied, they are to
3631 * completely replace the existing received properties, so stash
3632 * away the existing ones.
3634 if (dsl_prop_get_received(os, &origprops) == 0) {
3635 nvlist_t *errlist = NULL;
3637 * Don't bother writing a property if its value won't
3638 * change (and avoid the unnecessary security checks).
3640 * The first receive after SPA_VERSION_RECVD_PROPS is a
3641 * special case where we blow away all local properties
3644 if (!first_recvd_props)
3645 props_reduce(props, origprops);
3646 if (zfs_check_clearable(tofs, origprops,
3648 (void) nvlist_merge(errors, errlist, 0);
3649 nvlist_free(errlist);
3652 dmu_objset_rele(os, FTAG);
3655 if (zc->zc_string[0]) {
3656 error = dmu_objset_hold(zc->zc_string, FTAG, &origin);
3661 error = dmu_recv_begin(tofs, tosnap, zc->zc_top_ds,
3662 &zc->zc_begin_record, force, origin, &drc);
3664 dmu_objset_rele(origin, FTAG);
3669 * Set properties before we receive the stream so that they are applied
3670 * to the new data. Note that we must call dmu_recv_stream() if
3671 * dmu_recv_begin() succeeds.
3676 if (dmu_objset_from_ds(drc.drc_logical_ds, &os) == 0) {
3677 if (drc.drc_newfs) {
3678 if (spa_version(os->os_spa) >=
3679 SPA_VERSION_RECVD_PROPS)
3680 first_recvd_props = B_TRUE;
3681 } else if (origprops != NULL) {
3682 if (clear_received_props(os, tofs, origprops,
3683 first_recvd_props ? NULL : props) != 0)
3684 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3686 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3688 dsl_prop_set_hasrecvd(os);
3689 } else if (!drc.drc_newfs) {
3690 zc->zc_obj |= ZPROP_ERR_NOCLEAR;
3693 (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
3695 (void) nvlist_merge(errors, errlist, 0);
3696 nvlist_free(errlist);
3699 if (fit_error_list(zc, &errors) != 0 || put_nvlist(zc, errors) != 0) {
3701 * Caller made zc->zc_nvlist_dst less than the minimum expected
3702 * size or supplied an invalid address.
3704 props_error = EINVAL;
3708 error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd,
3709 &zc->zc_action_handle);
3712 zfs_sb_t *zsb = NULL;
3714 if (get_zfs_sb(tofs, &zsb) == 0) {
3718 error = zfs_suspend_fs(zsb);
3720 * If the suspend fails, then the recv_end will
3721 * likely also fail, and clean up after itself.
3723 end_err = dmu_recv_end(&drc);
3725 error = zfs_resume_fs(zsb, tofs);
3726 error = error ? error : end_err;
3727 deactivate_super(zsb->z_sb);
3729 error = dmu_recv_end(&drc);
3733 zc->zc_cookie = off - fp->f_offset;
3734 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
3738 if (zfs_ioc_recv_inject_err) {
3739 zfs_ioc_recv_inject_err = B_FALSE;
3744 * On error, restore the original props.
3746 if (error && props) {
3747 if (dmu_objset_hold(tofs, FTAG, &os) == 0) {
3748 if (clear_received_props(os, tofs, props, NULL) != 0) {
3750 * We failed to clear the received properties.
3751 * Since we may have left a $recvd value on the
3752 * system, we can't clear the $hasrecvd flag.
3754 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3755 } else if (first_recvd_props) {
3756 dsl_prop_unset_hasrecvd(os);
3758 dmu_objset_rele(os, FTAG);
3759 } else if (!drc.drc_newfs) {
3760 /* We failed to clear the received properties. */
3761 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3764 if (origprops == NULL && !drc.drc_newfs) {
3765 /* We failed to stash the original properties. */
3766 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3770 * dsl_props_set() will not convert RECEIVED to LOCAL on or
3771 * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL
3772 * explictly if we're restoring local properties cleared in the
3773 * first new-style receive.
3775 if (origprops != NULL &&
3776 zfs_set_prop_nvlist(tofs, (first_recvd_props ?
3777 ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED),
3778 origprops, NULL) != 0) {
3780 * We stashed the original properties but failed to
3783 zc->zc_obj |= ZPROP_ERR_NORESTORE;
3788 nvlist_free(origprops);
3789 nvlist_free(errors);
3793 error = props_error;
3800 * zc_name name of snapshot to send
3801 * zc_cookie file descriptor to send stream to
3802 * zc_obj fromorigin flag (mutually exclusive with zc_fromobj)
3803 * zc_sendobj objsetid of snapshot to send
3804 * zc_fromobj objsetid of incremental fromsnap (may be zero)
3809 zfs_ioc_send(zfs_cmd_t *zc)
3811 objset_t *fromsnap = NULL;
3817 dsl_dataset_t *dsfrom = NULL;
3821 error = spa_open(zc->zc_name, &spa, FTAG);
3825 dp = spa_get_dsl(spa);
3826 rw_enter(&dp->dp_config_rwlock, RW_READER);
3827 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
3828 rw_exit(&dp->dp_config_rwlock);
3830 spa_close(spa, FTAG);
3834 error = dmu_objset_from_ds(ds, &tosnap);
3836 dsl_dataset_rele(ds, FTAG);
3837 spa_close(spa, FTAG);
3841 if (zc->zc_fromobj != 0) {
3842 rw_enter(&dp->dp_config_rwlock, RW_READER);
3843 error = dsl_dataset_hold_obj(dp, zc->zc_fromobj, FTAG, &dsfrom);
3844 rw_exit(&dp->dp_config_rwlock);
3845 spa_close(spa, FTAG);
3847 dsl_dataset_rele(ds, FTAG);
3850 error = dmu_objset_from_ds(dsfrom, &fromsnap);
3852 dsl_dataset_rele(dsfrom, FTAG);
3853 dsl_dataset_rele(ds, FTAG);
3857 spa_close(spa, FTAG);
3860 fp = getf(zc->zc_cookie);
3862 dsl_dataset_rele(ds, FTAG);
3864 dsl_dataset_rele(dsfrom, FTAG);
3869 error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off);
3871 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
3873 releasef(zc->zc_cookie);
3875 dsl_dataset_rele(dsfrom, FTAG);
3876 dsl_dataset_rele(ds, FTAG);
3881 zfs_ioc_inject_fault(zfs_cmd_t *zc)
3885 error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id,
3886 &zc->zc_inject_record);
3889 zc->zc_guid = (uint64_t)id;
3895 zfs_ioc_clear_fault(zfs_cmd_t *zc)
3897 return (zio_clear_fault((int)zc->zc_guid));
3901 zfs_ioc_inject_list_next(zfs_cmd_t *zc)
3903 int id = (int)zc->zc_guid;
3906 error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name),
3907 &zc->zc_inject_record);
3915 zfs_ioc_error_log(zfs_cmd_t *zc)
3919 size_t count = (size_t)zc->zc_nvlist_dst_size;
3921 if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
3924 error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst,
3927 zc->zc_nvlist_dst_size = count;
3929 zc->zc_nvlist_dst_size = spa_get_errlog_size(spa);
3931 spa_close(spa, FTAG);
3937 zfs_ioc_clear(zfs_cmd_t *zc)
3944 * On zpool clear we also fix up missing slogs
3946 mutex_enter(&spa_namespace_lock);
3947 spa = spa_lookup(zc->zc_name);
3949 mutex_exit(&spa_namespace_lock);
3952 if (spa_get_log_state(spa) == SPA_LOG_MISSING) {
3953 /* we need to let spa_open/spa_load clear the chains */
3954 spa_set_log_state(spa, SPA_LOG_CLEAR);
3956 spa->spa_last_open_failed = 0;
3957 mutex_exit(&spa_namespace_lock);
3959 if (zc->zc_cookie & ZPOOL_NO_REWIND) {
3960 error = spa_open(zc->zc_name, &spa, FTAG);
3963 nvlist_t *config = NULL;
3965 if (zc->zc_nvlist_src == 0)
3968 if ((error = get_nvlist(zc->zc_nvlist_src,
3969 zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) {
3970 error = spa_open_rewind(zc->zc_name, &spa, FTAG,
3972 if (config != NULL) {
3975 if ((err = put_nvlist(zc, config)) != 0)
3977 nvlist_free(config);
3979 nvlist_free(policy);
3986 spa_vdev_state_enter(spa, SCL_NONE);
3988 if (zc->zc_guid == 0) {
3991 vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE);
3993 (void) spa_vdev_state_exit(spa, NULL, ENODEV);
3994 spa_close(spa, FTAG);
3999 vdev_clear(spa, vd);
4001 (void) spa_vdev_state_exit(spa, NULL, 0);
4004 * Resume any suspended I/Os.
4006 if (zio_resume(spa) != 0)
4009 spa_close(spa, FTAG);
4016 * zc_name name of filesystem
4017 * zc_value name of origin snapshot
4020 * zc_string name of conflicting snapshot, if there is one
4023 zfs_ioc_promote(zfs_cmd_t *zc)
4028 * We don't need to unmount *all* the origin fs's snapshots, but
4031 cp = strchr(zc->zc_value, '@');
4034 (void) dmu_objset_find(zc->zc_value,
4035 zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS);
4036 return (dsl_dataset_promote(zc->zc_name, zc->zc_string));
4040 * Retrieve a single {user|group}{used|quota}@... property.
4043 * zc_name name of filesystem
4044 * zc_objset_type zfs_userquota_prop_t
4045 * zc_value domain name (eg. "S-1-234-567-89")
4046 * zc_guid RID/UID/GID
4049 * zc_cookie property value
4052 zfs_ioc_userspace_one(zfs_cmd_t *zc)
4057 if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
4060 error = zfs_sb_hold(zc->zc_name, FTAG, &zsb, B_FALSE);
4064 error = zfs_userspace_one(zsb,
4065 zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie);
4066 zfs_sb_rele(zsb, FTAG);
4073 * zc_name name of filesystem
4074 * zc_cookie zap cursor
4075 * zc_objset_type zfs_userquota_prop_t
4076 * zc_nvlist_dst[_size] buffer to fill (not really an nvlist)
4079 * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t)
4080 * zc_cookie zap cursor
4083 zfs_ioc_userspace_many(zfs_cmd_t *zc)
4086 int bufsize = zc->zc_nvlist_dst_size;
4093 error = zfs_sb_hold(zc->zc_name, FTAG, &zsb, B_FALSE);
4097 buf = vmem_alloc(bufsize, KM_SLEEP);
4099 error = zfs_userspace_many(zsb, zc->zc_objset_type, &zc->zc_cookie,
4100 buf, &zc->zc_nvlist_dst_size);
4103 error = xcopyout(buf,
4104 (void *)(uintptr_t)zc->zc_nvlist_dst,
4105 zc->zc_nvlist_dst_size);
4107 vmem_free(buf, bufsize);
4108 zfs_sb_rele(zsb, FTAG);
4115 * zc_name name of filesystem
4121 zfs_ioc_userspace_upgrade(zfs_cmd_t *zc)
4127 if (get_zfs_sb(zc->zc_name, &zsb) == 0) {
4128 if (!dmu_objset_userused_enabled(zsb->z_os)) {
4130 * If userused is not enabled, it may be because the
4131 * objset needs to be closed & reopened (to grow the
4132 * objset_phys_t). Suspend/resume the fs will do that.
4134 error = zfs_suspend_fs(zsb);
4136 error = zfs_resume_fs(zsb, zc->zc_name);
4139 error = dmu_objset_userspace_upgrade(zsb->z_os);
4140 deactivate_super(zsb->z_sb);
4142 /* XXX kind of reading contents without owning */
4143 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4147 error = dmu_objset_userspace_upgrade(os);
4148 dmu_objset_rele(os, FTAG);
4155 zfs_ioc_share(zfs_cmd_t *zc)
4160 ace_t full_access[] = {
4161 {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0}
4166 * zc_name name of containing filesystem
4167 * zc_obj object # beyond which we want next in-use object #
4170 * zc_obj next in-use object #
4173 zfs_ioc_next_obj(zfs_cmd_t *zc)
4175 objset_t *os = NULL;
4178 error = dmu_objset_hold(zc->zc_name, FTAG, &os);
4182 error = dmu_object_next(os, &zc->zc_obj, B_FALSE,
4183 os->os_dsl_dataset->ds_phys->ds_prev_snap_txg);
4185 dmu_objset_rele(os, FTAG);
4191 * zc_name name of filesystem
4192 * zc_value prefix name for snapshot
4193 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
4198 zfs_ioc_tmp_snapshot(zfs_cmd_t *zc)
4203 snap_name = kmem_asprintf("%s-%016llx", zc->zc_value,
4204 (u_longlong_t)ddi_get_lbolt64());
4206 if (strlen(snap_name) >= MAXNAMELEN) {
4211 error = dmu_objset_snapshot(zc->zc_name, snap_name, snap_name,
4212 NULL, B_FALSE, B_TRUE, zc->zc_cleanup_fd);
4218 (void) strcpy(zc->zc_value, snap_name);
4225 * zc_name name of "to" snapshot
4226 * zc_value name of "from" snapshot
4227 * zc_cookie file descriptor to write diff data on
4230 * dmu_diff_record_t's to the file descriptor
4233 zfs_ioc_diff(zfs_cmd_t *zc)
4241 error = dmu_objset_hold(zc->zc_name, FTAG, &tosnap);
4245 error = dmu_objset_hold(zc->zc_value, FTAG, &fromsnap);
4247 dmu_objset_rele(tosnap, FTAG);
4251 fp = getf(zc->zc_cookie);
4253 dmu_objset_rele(fromsnap, FTAG);
4254 dmu_objset_rele(tosnap, FTAG);
4260 error = dmu_diff(tosnap, fromsnap, fp->f_vnode, &off);
4262 if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
4264 releasef(zc->zc_cookie);
4266 dmu_objset_rele(fromsnap, FTAG);
4267 dmu_objset_rele(tosnap, FTAG);
4272 * Remove all ACL files in shares dir
4274 #ifdef HAVE_SMB_SHARE
4276 zfs_smb_acl_purge(znode_t *dzp)
4279 zap_attribute_t zap;
4280 zfs_sb_t *zsb = ZTOZSB(dzp);
4283 for (zap_cursor_init(&zc, zsb->z_os, dzp->z_id);
4284 (error = zap_cursor_retrieve(&zc, &zap)) == 0;
4285 zap_cursor_advance(&zc)) {
4286 if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred,
4290 zap_cursor_fini(&zc);
4293 #endif /* HAVE_SMB_SHARE */
4296 zfs_ioc_smb_acl(zfs_cmd_t *zc)
4298 #ifdef HAVE_SMB_SHARE
4301 vnode_t *resourcevp = NULL;
4310 if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
4311 NO_FOLLOW, NULL, &vp)) != 0)
4314 /* Now make sure mntpnt and dataset are ZFS */
4316 if (vp->v_vfsp->vfs_fstype != zfsfstype ||
4317 (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
4318 zc->zc_name) != 0)) {
4328 * Create share dir if its missing.
4330 mutex_enter(&zsb->z_lock);
4331 if (zsb->z_shares_dir == 0) {
4334 tx = dmu_tx_create(zsb->z_os);
4335 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE,
4337 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
4338 error = dmu_tx_assign(tx, TXG_WAIT);
4342 error = zfs_create_share_dir(zsb, tx);
4346 mutex_exit(&zsb->z_lock);
4352 mutex_exit(&zsb->z_lock);
4354 ASSERT(zsb->z_shares_dir);
4355 if ((error = zfs_zget(zsb, zsb->z_shares_dir, &sharedir)) != 0) {
4361 switch (zc->zc_cookie) {
4362 case ZFS_SMB_ACL_ADD:
4363 vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE;
4364 vattr.va_mode = S_IFREG|0777;
4368 vsec.vsa_mask = VSA_ACE;
4369 vsec.vsa_aclentp = &full_access;
4370 vsec.vsa_aclentsz = sizeof (full_access);
4371 vsec.vsa_aclcnt = 1;
4373 error = VOP_CREATE(ZTOV(sharedir), zc->zc_string,
4374 &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec);
4376 VN_RELE(resourcevp);
4379 case ZFS_SMB_ACL_REMOVE:
4380 error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred,
4384 case ZFS_SMB_ACL_RENAME:
4385 if ((error = get_nvlist(zc->zc_nvlist_src,
4386 zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) {
4391 if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) ||
4392 nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET,
4395 VN_RELE(ZTOV(sharedir));
4397 nvlist_free(nvlist);
4400 error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target,
4402 nvlist_free(nvlist);
4405 case ZFS_SMB_ACL_PURGE:
4406 error = zfs_smb_acl_purge(sharedir);
4415 VN_RELE(ZTOV(sharedir));
4422 #endif /* HAVE_SMB_SHARE */
4427 * zc_name name of filesystem
4428 * zc_value short name of snap
4429 * zc_string user-supplied tag for this hold
4430 * zc_cookie recursive flag
4431 * zc_temphold set if hold is temporary
4432 * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
4433 * zc_sendobj if non-zero, the objid for zc_name@zc_value
4434 * zc_createtxg if zc_sendobj is non-zero, snap must have zc_createtxg
4439 zfs_ioc_hold(zfs_cmd_t *zc)
4441 boolean_t recursive = zc->zc_cookie;
4448 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
4451 if (zc->zc_sendobj == 0) {
4452 return (dsl_dataset_user_hold(zc->zc_name, zc->zc_value,
4453 zc->zc_string, recursive, zc->zc_temphold,
4454 zc->zc_cleanup_fd));
4460 error = spa_open(zc->zc_name, &spa, FTAG);
4464 dp = spa_get_dsl(spa);
4465 rw_enter(&dp->dp_config_rwlock, RW_READER);
4466 error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
4467 rw_exit(&dp->dp_config_rwlock);
4468 spa_close(spa, FTAG);
4473 * Until we have a hold on this snapshot, it's possible that
4474 * zc_sendobj could've been destroyed and reused as part
4475 * of a later txg. Make sure we're looking at the right object.
4477 if (zc->zc_createtxg != ds->ds_phys->ds_creation_txg) {
4478 dsl_dataset_rele(ds, FTAG);
4482 if (zc->zc_cleanup_fd != -1 && zc->zc_temphold) {
4483 error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor);
4485 dsl_dataset_rele(ds, FTAG);
4490 error = dsl_dataset_user_hold_for_send(ds, zc->zc_string,
4494 dsl_register_onexit_hold_cleanup(ds, zc->zc_string,
4497 zfs_onexit_fd_rele(zc->zc_cleanup_fd);
4499 dsl_dataset_rele(ds, FTAG);
4506 * zc_name name of dataset from which we're releasing a user hold
4507 * zc_value short name of snap
4508 * zc_string user-supplied tag for this hold
4509 * zc_cookie recursive flag
4514 zfs_ioc_release(zfs_cmd_t *zc)
4516 boolean_t recursive = zc->zc_cookie;
4518 if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
4521 return (dsl_dataset_user_release(zc->zc_name, zc->zc_value,
4522 zc->zc_string, recursive));
4527 * zc_name name of filesystem
4530 * zc_nvlist_src{_size} nvlist of snapshot holds
4533 zfs_ioc_get_holds(zfs_cmd_t *zc)
4538 if ((error = dsl_dataset_get_holds(zc->zc_name, &nvp)) == 0) {
4539 error = put_nvlist(zc, nvp);
4548 * zc_guid flags (ZEVENT_NONBLOCK)
4551 * zc_nvlist_dst next nvlist event
4552 * zc_cookie dropped events since last get
4553 * zc_cleanup_fd cleanup-on-exit file descriptor
4556 zfs_ioc_events_next(zfs_cmd_t *zc)
4559 nvlist_t *event = NULL;
4561 uint64_t dropped = 0;
4564 error = zfs_zevent_fd_hold(zc->zc_cleanup_fd, &minor, &ze);
4569 error = zfs_zevent_next(ze, &event,
4570 &zc->zc_nvlist_dst_size, &dropped);
4571 if (event != NULL) {
4572 zc->zc_cookie = dropped;
4573 error = put_nvlist(zc, event);
4577 if (zc->zc_guid & ZEVENT_NONBLOCK)
4580 if ((error == 0) || (error != ENOENT))
4583 error = zfs_zevent_wait(ze);
4588 zfs_zevent_fd_rele(zc->zc_cleanup_fd);
4595 * zc_cookie cleared events count
4598 zfs_ioc_events_clear(zfs_cmd_t *zc)
4602 zfs_zevent_drain_all(&count);
4603 zc->zc_cookie = count;
4609 * pool create, destroy, and export don't log the history as part of
4610 * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export
4611 * do the logging of those commands.
4613 static zfs_ioc_vec_t zfs_ioc_vec[] = {
4614 { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4616 { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4618 { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4620 { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4622 { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE,
4624 { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE,
4626 { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE,
4628 { zfs_ioc_pool_scan, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4629 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4630 { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE,
4631 POOL_CHECK_READONLY },
4632 { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4633 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4634 { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4636 { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4637 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4638 { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4639 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4640 { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4641 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4642 { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4643 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4644 { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4645 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4646 { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4647 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4648 { zfs_ioc_vdev_setfru, zfs_secpolicy_config, POOL_NAME, B_FALSE,
4649 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4650 { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4651 POOL_CHECK_SUSPENDED },
4652 { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4654 { zfs_ioc_dataset_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4655 POOL_CHECK_SUSPENDED },
4656 { zfs_ioc_snapshot_list_next, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4657 POOL_CHECK_SUSPENDED },
4658 { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE,
4659 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4660 { zfs_ioc_create_minor, zfs_secpolicy_config, DATASET_NAME, B_FALSE,
4662 { zfs_ioc_remove_minor, zfs_secpolicy_config, DATASET_NAME, B_FALSE,
4664 { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE,
4665 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4666 { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE,
4667 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4668 { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE,
4669 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4670 { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE,
4671 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4672 { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE,
4673 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4674 { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE,
4676 { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE,
4678 { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE,
4680 { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE,
4682 { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE,
4684 { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4686 { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE,
4687 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4688 { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, DATASET_NAME,
4689 B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4690 { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE,
4691 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4692 { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_diff, POOL_NAME, B_FALSE,
4694 { zfs_ioc_obj_to_path, zfs_secpolicy_diff, DATASET_NAME, B_FALSE,
4695 POOL_CHECK_SUSPENDED },
4696 { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4697 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4698 { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE,
4700 { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE,
4701 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4702 { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4704 { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE,
4706 { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE,
4707 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4708 { zfs_ioc_smb_acl, zfs_secpolicy_smb_acl, DATASET_NAME, B_FALSE,
4710 { zfs_ioc_userspace_one, zfs_secpolicy_userspace_one, DATASET_NAME,
4711 B_FALSE, POOL_CHECK_NONE },
4712 { zfs_ioc_userspace_many, zfs_secpolicy_userspace_many, DATASET_NAME,
4713 B_FALSE, POOL_CHECK_NONE },
4714 { zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade,
4715 DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4716 { zfs_ioc_hold, zfs_secpolicy_hold, DATASET_NAME, B_TRUE,
4717 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4718 { zfs_ioc_release, zfs_secpolicy_release, DATASET_NAME, B_TRUE,
4719 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4720 { zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4721 POOL_CHECK_SUSPENDED },
4722 { zfs_ioc_objset_recvd_props, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4724 { zfs_ioc_vdev_split, zfs_secpolicy_config, POOL_NAME, B_TRUE,
4725 POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4726 { zfs_ioc_next_obj, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
4728 { zfs_ioc_diff, zfs_secpolicy_diff, DATASET_NAME, B_FALSE,
4730 { zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot, DATASET_NAME,
4731 B_FALSE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
4732 { zfs_ioc_obj_to_stats, zfs_secpolicy_diff, DATASET_NAME, B_FALSE,
4733 POOL_CHECK_SUSPENDED },
4734 { zfs_ioc_events_next, zfs_secpolicy_config, NO_NAME, B_FALSE,
4736 { zfs_ioc_events_clear, zfs_secpolicy_config, NO_NAME, B_FALSE,
4741 pool_status_check(const char *name, zfs_ioc_namecheck_t type,
4742 zfs_ioc_poolcheck_t check)
4747 ASSERT(type == POOL_NAME || type == DATASET_NAME);
4749 if (check & POOL_CHECK_NONE)
4752 error = spa_open(name, &spa, FTAG);
4754 if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa))
4756 else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa))
4758 spa_close(spa, FTAG);
4764 zfsdev_get_state_impl(minor_t minor, enum zfsdev_state_type which)
4768 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
4770 for (zs = list_head(&zfsdev_state_list); zs != NULL;
4771 zs = list_next(&zfsdev_state_list, zs)) {
4772 if (zs->zs_minor == minor) {
4774 case ZST_ONEXIT: return (zs->zs_onexit);
4775 case ZST_ZEVENT: return (zs->zs_zevent);
4776 case ZST_ALL: return (zs);
4785 zfsdev_get_state(minor_t minor, enum zfsdev_state_type which)
4789 mutex_enter(&zfsdev_state_lock);
4790 ptr = zfsdev_get_state_impl(minor, which);
4791 mutex_exit(&zfsdev_state_lock);
4797 zfsdev_getminor(struct file *filp)
4799 ASSERT(filp != NULL);
4800 ASSERT(filp->private_data != NULL);
4802 return (((zfsdev_state_t *)filp->private_data)->zs_minor);
4806 * Find a free minor number. The zfsdev_state_list is expected to
4807 * be short since it is only a list of currently open file handles.
4810 zfsdev_minor_alloc(void)
4812 static minor_t last_minor = 0;
4815 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
4817 for (m = last_minor + 1; m != last_minor; m++) {
4818 if (m > ZFSDEV_MAX_MINOR)
4820 if (zfsdev_get_state_impl(m, ZST_ALL) == NULL) {
4830 zfsdev_state_init(struct file *filp)
4835 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
4837 minor = zfsdev_minor_alloc();
4841 zs = kmem_zalloc( sizeof(zfsdev_state_t), KM_SLEEP);
4846 zs->zs_minor = minor;
4847 filp->private_data = zs;
4849 zfs_onexit_init((zfs_onexit_t **)&zs->zs_onexit);
4850 zfs_zevent_init((zfs_zevent_t **)&zs->zs_zevent);
4852 list_insert_tail(&zfsdev_state_list, zs);
4858 zfsdev_state_destroy(struct file *filp)
4862 ASSERT(MUTEX_HELD(&zfsdev_state_lock));
4863 ASSERT(filp->private_data != NULL);
4865 zs = filp->private_data;
4866 zfs_onexit_destroy(zs->zs_onexit);
4867 zfs_zevent_destroy(zs->zs_zevent);
4869 list_remove(&zfsdev_state_list, zs);
4870 kmem_free(zs, sizeof(zfsdev_state_t));
4876 zfsdev_open(struct inode *ino, struct file *filp)
4880 mutex_enter(&zfsdev_state_lock);
4881 error = zfsdev_state_init(filp);
4882 mutex_exit(&zfsdev_state_lock);
4888 zfsdev_release(struct inode *ino, struct file *filp)
4892 mutex_enter(&zfsdev_state_lock);
4893 error = zfsdev_state_destroy(filp);
4894 mutex_exit(&zfsdev_state_lock);
4900 zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
4904 int error, rc, flag = 0;
4906 vec = cmd - ZFS_IOC;
4907 if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
4910 zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
4912 error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag);
4916 if ((error == 0) && !(flag & FKIOCTL))
4917 error = zfs_ioc_vec[vec].zvec_secpolicy(zc, CRED());
4920 * Ensure that all pool/dataset names are valid before we pass down to
4924 zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
4925 zc->zc_iflags = flag & FKIOCTL;
4926 switch (zfs_ioc_vec[vec].zvec_namecheck) {
4928 if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
4930 error = pool_status_check(zc->zc_name,
4931 zfs_ioc_vec[vec].zvec_namecheck,
4932 zfs_ioc_vec[vec].zvec_pool_check);
4936 if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
4938 error = pool_status_check(zc->zc_name,
4939 zfs_ioc_vec[vec].zvec_namecheck,
4940 zfs_ioc_vec[vec].zvec_pool_check);
4949 error = zfs_ioc_vec[vec].zvec_func(zc);
4951 rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag);
4955 if (zfs_ioc_vec[vec].zvec_his_log)
4956 zfs_log_history(zc);
4959 kmem_free(zc, sizeof (zfs_cmd_t));
4963 #ifdef CONFIG_COMPAT
4965 zfsdev_compat_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
4967 return zfsdev_ioctl(filp, cmd, arg);
4970 #define zfsdev_compat_ioctl NULL
4973 static const struct file_operations zfsdev_fops = {
4974 .open = zfsdev_open,
4975 .release = zfsdev_release,
4976 .unlocked_ioctl = zfsdev_ioctl,
4977 .compat_ioctl = zfsdev_compat_ioctl,
4978 .owner = THIS_MODULE,
4981 static struct miscdevice zfs_misc = {
4982 .minor = MISC_DYNAMIC_MINOR,
4984 .fops = &zfsdev_fops,
4992 mutex_init(&zfsdev_state_lock, NULL, MUTEX_DEFAULT, NULL);
4993 list_create(&zfsdev_state_list, sizeof (zfsdev_state_t),
4994 offsetof(zfsdev_state_t, zs_next));
4996 error = misc_register(&zfs_misc);
4998 printk(KERN_INFO "ZFS: misc_register() failed %d\n", error);
5010 error = misc_deregister(&zfs_misc);
5012 printk(KERN_INFO "ZFS: misc_deregister() failed %d\n", error);
5014 mutex_destroy(&zfsdev_state_lock);
5015 list_destroy(&zfsdev_state_list);
5018 uint_t zfs_fsyncer_key;
5019 extern uint_t rrw_tsd_key;
5022 #define ZFS_DEBUG_STR " (DEBUG mode)"
5024 #define ZFS_DEBUG_STR ""
5032 spa_init(FREAD | FWRITE);
5035 if ((error = zvol_init()) != 0)
5038 if ((error = zfs_attach()) != 0)
5041 tsd_create(&zfs_fsyncer_key, NULL);
5042 tsd_create(&rrw_tsd_key, NULL);
5044 printk(KERN_NOTICE "ZFS: Loaded module v%s%s, "
5045 "ZFS pool version %s, ZFS filesystem version %s\n",
5046 ZFS_META_VERSION, ZFS_DEBUG_STR,
5047 SPA_VERSION_STRING, ZPL_VERSION_STRING);
5056 printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s%s"
5057 ", rc = %d\n", ZFS_META_VERSION, ZFS_DEBUG_STR, error);
5070 tsd_destroy(&zfs_fsyncer_key);
5071 tsd_destroy(&rrw_tsd_key);
5073 printk(KERN_NOTICE "ZFS: Unloaded module v%s%s\n",
5074 ZFS_META_VERSION, ZFS_DEBUG_STR);
5080 spl_module_init(_init);
5081 spl_module_exit(_fini);
5083 MODULE_DESCRIPTION("ZFS");
5084 MODULE_AUTHOR(ZFS_META_AUTHOR);
5085 MODULE_LICENSE(ZFS_META_LICENSE);
5086 #endif /* HAVE_SPL */