Merge commit 'refs/top-bases/feature-branch' into feature-branch

1 files changed, 3175 insertions, 0 deletions

diff --git a/module/zfs/zfs_ioctl.c b/module/zfs/zfs_ioctl.c
new file mode 100644
index 000000000..b6ad57451
--- /dev/null
+++ b/module/zfs/zfs_ioctl.c
@@ -0,0 +1,3175 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/errno.h>
+#include <sys/uio.h>
+#include <sys/buf.h>
+#include <sys/modctl.h>
+#include <sys/open.h>
+#include <sys/file.h>
+#include <sys/kmem.h>
+#include <sys/conf.h>
+#include <sys/cmn_err.h>
+#include <sys/stat.h>
+#include <sys/zfs_ioctl.h>
+#include <sys/zfs_znode.h>
+#include <sys/zap.h>
+#include <sys/spa.h>
+#include <sys/spa_impl.h>
+#include <sys/vdev.h>
+#include <sys/vdev_impl.h>
+#include <sys/dmu.h>
+#include <sys/dsl_dir.h>
+#include <sys/dsl_dataset.h>
+#include <sys/dsl_prop.h>
+#include <sys/dsl_deleg.h>
+#include <sys/dmu_objset.h>
+#include <sys/ddi.h>
+#include <sys/sunddi.h>
+#include <sys/sunldi.h>
+#include <sys/policy.h>
+#include <sys/zone.h>
+#include <sys/nvpair.h>
+#include <sys/pathname.h>
+#include <sys/mount.h>
+#include <sys/sdt.h>
+#include <sys/fs/zfs.h>
+#include <sys/zfs_ctldir.h>
+#include <sys/zfs_dir.h>
+#include <sys/zvol.h>
+#include <sharefs/share.h>
+#include <sys/dmu_objset.h>
+
+#include "zfs_namecheck.h"
+#include "zfs_prop.h"
+#include "zfs_deleg.h"
+
+extern struct modlfs zfs_modlfs;
+
+extern void zfs_init(void);
+extern void zfs_fini(void);
+
+ldi_ident_t zfs_li = NULL;
+dev_info_t *zfs_dip;
+
+typedef int zfs_ioc_func_t(zfs_cmd_t *);
+typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *);
+
+typedef struct zfs_ioc_vec {
+	zfs_ioc_func_t		*zvec_func;
+	zfs_secpolicy_func_t	*zvec_secpolicy;
+	enum {
+		NO_NAME,
+		POOL_NAME,
+		DATASET_NAME
+	} zvec_namecheck;
+	boolean_t		zvec_his_log;
+} zfs_ioc_vec_t;
+
+static void clear_props(char *dataset, nvlist_t *props);
+static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *,
+    boolean_t *);
+int zfs_set_prop_nvlist(const char *, nvlist_t *);
+
+/* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */
+void
+__dprintf(const char *file, const char *func, int line, const char *fmt, ...)
+{
+	const char *newfile;
+	char buf[256];
+	va_list adx;
+
+	/*
+	 * Get rid of annoying "../common/" prefix to filename.
+	 */
+	newfile = strrchr(file, '/');
+	if (newfile != NULL) {
+		newfile = newfile + 1; /* Get rid of leading / */
+	} else {
+		newfile = file;
+	}
+
+	va_start(adx, fmt);
+	(void) vsnprintf(buf, sizeof (buf), fmt, adx);
+	va_end(adx);
+
+	/*
+	 * To get this data, use the zfs-dprintf probe as so:
+	 * dtrace -q -n 'zfs-dprintf \
+	 *	/stringof(arg0) == "dbuf.c"/ \
+	 *	{printf("%s: %s", stringof(arg1), stringof(arg3))}'
+	 * arg0 = file name
+	 * arg1 = function name
+	 * arg2 = line number
+	 * arg3 = message
+	 */
+	DTRACE_PROBE4(zfs__dprintf,
+	    char *, newfile, char *, func, int, line, char *, buf);
+}
+
+static void
+history_str_free(char *buf)
+{
+	kmem_free(buf, HIS_MAX_RECORD_LEN);
+}
+
+static char *
+history_str_get(zfs_cmd_t *zc)
+{
+	char *buf;
+
+	if (zc->zc_history == NULL)
+		return (NULL);
+
+	buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP);
+	if (copyinstr((void *)(uintptr_t)zc->zc_history,
+	    buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
+		history_str_free(buf);
+		return (NULL);
+	}
+
+	buf[HIS_MAX_RECORD_LEN -1] = '\0';
+
+	return (buf);
+}
+
+/*
+ * Check to see if the named dataset is currently defined as bootable
+ */
+static boolean_t
+zfs_is_bootfs(const char *name)
+{
+	spa_t *spa;
+	boolean_t ret = B_FALSE;
+
+	if (spa_open(name, &spa, FTAG) == 0) {
+		if (spa->spa_bootfs) {
+			objset_t *os;
+
+			if (dmu_objset_open(name, DMU_OST_ZFS,
+			    DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
+				ret = (dmu_objset_id(os) == spa->spa_bootfs);
+				dmu_objset_close(os);
+			}
+		}
+		spa_close(spa, FTAG);
+	}
+	return (ret);
+}
+
+/*
+ * zfs_earlier_version
+ *
+ *	Return non-zero if the spa version is less than requested version.
+ */
+static int
+zfs_earlier_version(const char *name, int version)
+{
+	spa_t *spa;
+
+	if (spa_open(name, &spa, FTAG) == 0) {
+		if (spa_version(spa) < version) {
+			spa_close(spa, FTAG);
+			return (1);
+		}
+		spa_close(spa, FTAG);
+	}
+	return (0);
+}
+
+/*
+ * zpl_earlier_version
+ *
+ * Return TRUE if the ZPL version is less than requested version.
+ */
+static boolean_t
+zpl_earlier_version(const char *name, int version)
+{
+	objset_t *os;
+	boolean_t rc = B_TRUE;
+
+	if (dmu_objset_open(name, DMU_OST_ANY,
+	    DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
+		uint64_t zplversion;
+
+		if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0)
+			rc = zplversion < version;
+		dmu_objset_close(os);
+	}
+	return (rc);
+}
+
+static void
+zfs_log_history(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	char *buf;
+
+	if ((buf = history_str_get(zc)) == NULL)
+		return;
+
+	if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
+		if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
+			(void) spa_history_log(spa, buf, LOG_CMD_NORMAL);
+		spa_close(spa, FTAG);
+	}
+	history_str_free(buf);
+}
+
+/*
+ * Policy for top-level read operations (list pools).  Requires no privileges,
+ * and can be used in the local zone, as there is no associated dataset.
+ */
+/* ARGSUSED */
+static int
+zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr)
+{
+	return (0);
+}
+
+/*
+ * Policy for dataset read operations (list children, get statistics).  Requires
+ * no privileges, but must be visible in the local zone.
+ */
+/* ARGSUSED */
+static int
+zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr)
+{
+	if (INGLOBALZONE(curproc) ||
+	    zone_dataset_visible(zc->zc_name, NULL))
+		return (0);
+
+	return (ENOENT);
+}
+
+static int
+zfs_dozonecheck(const char *dataset, cred_t *cr)
+{
+	uint64_t zoned;
+	int writable = 1;
+
+	/*
+	 * The dataset must be visible by this zone -- check this first
+	 * so they don't see EPERM on something they shouldn't know about.
+	 */
+	if (!INGLOBALZONE(curproc) &&
+	    !zone_dataset_visible(dataset, &writable))
+		return (ENOENT);
+
+	if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
+		return (ENOENT);
+
+	if (INGLOBALZONE(curproc)) {
+		/*
+		 * If the fs is zoned, only root can access it from the
+		 * global zone.
+		 */
+		if (secpolicy_zfs(cr) && zoned)
+			return (EPERM);
+	} else {
+		/*
+		 * If we are in a local zone, the 'zoned' property must be set.
+		 */
+		if (!zoned)
+			return (EPERM);
+
+		/* must be writable by this zone */
+		if (!writable)
+			return (EPERM);
+	}
+	return (0);
+}
+
+int
+zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
+{
+	int error;
+
+	error = zfs_dozonecheck(name, cr);
+	if (error == 0) {
+		error = secpolicy_zfs(cr);
+		if (error)
+			error = dsl_deleg_access(name, perm, cr);
+	}
+	return (error);
+}
+
+static int
+zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr)
+{
+	/*
+	 * Check permissions for special properties.
+	 */
+	switch (prop) {
+	case ZFS_PROP_ZONED:
+		/*
+		 * Disallow setting of 'zoned' from within a local zone.
+		 */
+		if (!INGLOBALZONE(curproc))
+			return (EPERM);
+		break;
+
+	case ZFS_PROP_QUOTA:
+		if (!INGLOBALZONE(curproc)) {
+			uint64_t zoned;
+			char setpoint[MAXNAMELEN];
+			/*
+			 * Unprivileged users are allowed to modify the
+			 * quota on things *under* (ie. contained by)
+			 * the thing they own.
+			 */
+			if (dsl_prop_get_integer(name, "zoned", &zoned,
+			    setpoint))
+				return (EPERM);
+			if (!zoned || strlen(name) <= strlen(setpoint))
+				return (EPERM);
+		}
+		break;
+	}
+
+	return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr));
+}
+
+int
+zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr)
+{
+	int error;
+
+	error = zfs_dozonecheck(zc->zc_name, cr);
+	if (error)
+		return (error);
+
+	/*
+	 * permission to set permissions will be evaluated later in
+	 * dsl_deleg_can_allow()
+	 */
+	return (0);
+}
+
+int
+zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr)
+{
+	int error;
+	error = zfs_secpolicy_write_perms(zc->zc_name,
+	    ZFS_DELEG_PERM_ROLLBACK, cr);
+	if (error == 0)
+		error = zfs_secpolicy_write_perms(zc->zc_name,
+		    ZFS_DELEG_PERM_MOUNT, cr);
+	return (error);
+}
+
+int
+zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr)
+{
+	return (zfs_secpolicy_write_perms(zc->zc_name,
+	    ZFS_DELEG_PERM_SEND, cr));
+}
+
+int
+zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr)
+{
+	if (!INGLOBALZONE(curproc))
+		return (EPERM);
+
+	if (secpolicy_nfs(cr) == 0) {
+		return (0);
+	} else {
+		vnode_t *vp;
+		int error;
+
+		if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
+		    NO_FOLLOW, NULL, &vp)) != 0)
+			return (error);
+
+		/* Now make sure mntpnt and dataset are ZFS */
+
+		if (vp->v_vfsp->vfs_fstype != zfsfstype ||
+		    (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
+		    zc->zc_name) != 0)) {
+			VN_RELE(vp);
+			return (EPERM);
+		}
+
+		VN_RELE(vp);
+		return (dsl_deleg_access(zc->zc_name,
+		    ZFS_DELEG_PERM_SHARE, cr));
+	}
+}
+
+static int
+zfs_get_parent(const char *datasetname, char *parent, int parentsize)
+{
+	char *cp;
+
+	/*
+	 * Remove the @bla or /bla from the end of the name to get the parent.
+	 */
+	(void) strncpy(parent, datasetname, parentsize);
+	cp = strrchr(parent, '@');
+	if (cp != NULL) {
+		cp[0] = '\0';
+	} else {
+		cp = strrchr(parent, '/');
+		if (cp == NULL)
+			return (ENOENT);
+		cp[0] = '\0';
+	}
+
+	return (0);
+}
+
+int
+zfs_secpolicy_destroy_perms(const char *name, cred_t *cr)
+{
+	int error;
+
+	if ((error = zfs_secpolicy_write_perms(name,
+	    ZFS_DELEG_PERM_MOUNT, cr)) != 0)
+		return (error);
+
+	return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
+}
+
+static int
+zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr)
+{
+	return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
+}
+
+/*
+ * Must have sys_config privilege to check the iscsi permission
+ */
+/* ARGSUSED */
+static int
+zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr)
+{
+	return (secpolicy_zfs(cr));
+}
+
+int
+zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
+{
+	char 	parentname[MAXNAMELEN];
+	int	error;
+
+	if ((error = zfs_secpolicy_write_perms(from,
+	    ZFS_DELEG_PERM_RENAME, cr)) != 0)
+		return (error);
+
+	if ((error = zfs_secpolicy_write_perms(from,
+	    ZFS_DELEG_PERM_MOUNT, cr)) != 0)
+		return (error);
+
+	if ((error = zfs_get_parent(to, parentname,
+	    sizeof (parentname))) != 0)
+		return (error);
+
+	if ((error = zfs_secpolicy_write_perms(parentname,
+	    ZFS_DELEG_PERM_CREATE, cr)) != 0)
+		return (error);
+
+	if ((error = zfs_secpolicy_write_perms(parentname,
+	    ZFS_DELEG_PERM_MOUNT, cr)) != 0)
+		return (error);
+
+	return (error);
+}
+
+static int
+zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr)
+{
+	return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));
+}
+
+static int
+zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr)
+{
+	char 	parentname[MAXNAMELEN];
+	objset_t *clone;
+	int error;
+
+	error = zfs_secpolicy_write_perms(zc->zc_name,
+	    ZFS_DELEG_PERM_PROMOTE, cr);
+	if (error)
+		return (error);
+
+	error = dmu_objset_open(zc->zc_name, DMU_OST_ANY,
+	    DS_MODE_USER | DS_MODE_READONLY, &clone);
+
+	if (error == 0) {
+		dsl_dataset_t *pclone = NULL;
+		dsl_dir_t *dd;
+		dd = clone->os->os_dsl_dataset->ds_dir;
+
+		rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER);
+		error = dsl_dataset_hold_obj(dd->dd_pool,
+		    dd->dd_phys->dd_origin_obj, FTAG, &pclone);
+		rw_exit(&dd->dd_pool->dp_config_rwlock);
+		if (error) {
+			dmu_objset_close(clone);
+			return (error);
+		}
+
+		error = zfs_secpolicy_write_perms(zc->zc_name,
+		    ZFS_DELEG_PERM_MOUNT, cr);
+
+		dsl_dataset_name(pclone, parentname);
+		dmu_objset_close(clone);
+		dsl_dataset_rele(pclone, FTAG);
+		if (error == 0)
+			error = zfs_secpolicy_write_perms(parentname,
+			    ZFS_DELEG_PERM_PROMOTE, cr);
+	}
+	return (error);
+}
+
+static int
+zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr)
+{
+	int error;
+
+	if ((error = zfs_secpolicy_write_perms(zc->zc_name,
+	    ZFS_DELEG_PERM_RECEIVE, cr)) != 0)
+		return (error);
+
+	if ((error = zfs_secpolicy_write_perms(zc->zc_name,
+	    ZFS_DELEG_PERM_MOUNT, cr)) != 0)
+		return (error);
+
+	return (zfs_secpolicy_write_perms(zc->zc_name,
+	    ZFS_DELEG_PERM_CREATE, cr));
+}
+
+int
+zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
+{
+	int error;
+
+	if ((error = zfs_secpolicy_write_perms(name,
+	    ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0)
+		return (error);
+
+	error = zfs_secpolicy_write_perms(name,
+	    ZFS_DELEG_PERM_MOUNT, cr);
+
+	return (error);
+}
+
+static int
+zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr)
+{
+
+	return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr));
+}
+
+static int
+zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr)
+{
+	char 	parentname[MAXNAMELEN];
+	int 	error;
+
+	if ((error = zfs_get_parent(zc->zc_name, parentname,
+	    sizeof (parentname))) != 0)
+		return (error);
+
+	if (zc->zc_value[0] != '\0') {
+		if ((error = zfs_secpolicy_write_perms(zc->zc_value,
+		    ZFS_DELEG_PERM_CLONE, cr)) != 0)
+			return (error);
+	}
+
+	if ((error = zfs_secpolicy_write_perms(parentname,
+	    ZFS_DELEG_PERM_CREATE, cr)) != 0)
+		return (error);
+
+	error = zfs_secpolicy_write_perms(parentname,
+	    ZFS_DELEG_PERM_MOUNT, cr);
+
+	return (error);
+}
+
+static int
+zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr)
+{
+	int error;
+
+	error = secpolicy_fs_unmount(cr, NULL);
+	if (error) {
+		error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr);
+	}
+	return (error);
+}
+
+/*
+ * Policy for pool operations - create/destroy pools, add vdevs, etc.  Requires
+ * SYS_CONFIG privilege, which is not available in a local zone.
+ */
+/* ARGSUSED */
+static int
+zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr)
+{
+	if (secpolicy_sys_config(cr, B_FALSE) != 0)
+		return (EPERM);
+
+	return (0);
+}
+
+/*
+ * Just like zfs_secpolicy_config, except that we will check for
+ * mount permission on the dataset for permission to create/remove
+ * the minor nodes.
+ */
+static int
+zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr)
+{
+	if (secpolicy_sys_config(cr, B_FALSE) != 0) {
+		return (dsl_deleg_access(zc->zc_name,
+		    ZFS_DELEG_PERM_MOUNT, cr));
+	}
+
+	return (0);
+}
+
+/*
+ * Policy for fault injection.  Requires all privileges.
+ */
+/* ARGSUSED */
+static int
+zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr)
+{
+	return (secpolicy_zinject(cr));
+}
+
+static int
+zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr)
+{
+	zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
+
+	if (prop == ZPROP_INVAL) {
+		if (!zfs_prop_user(zc->zc_value))
+			return (EINVAL);
+		return (zfs_secpolicy_write_perms(zc->zc_name,
+		    ZFS_DELEG_PERM_USERPROP, cr));
+	} else {
+		if (!zfs_prop_inheritable(prop))
+			return (EINVAL);
+		return (zfs_secpolicy_setprop(zc->zc_name, prop, cr));
+	}
+}
+
+/*
+ * Returns the nvlist as specified by the user in the zfs_cmd_t.
+ */
+static int
+get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp)
+{
+	char *packed;
+	int error;
+	nvlist_t *list = NULL;
+
+	/*
+	 * Read in and unpack the user-supplied nvlist.
+	 */
+	if (size == 0)
+		return (EINVAL);
+
+	packed = kmem_alloc(size, KM_SLEEP);
+
+	if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) {
+		kmem_free(packed, size);
+		return (error);
+	}
+
+	if ((error = nvlist_unpack(packed, size, &list, 0)) != 0) {
+		kmem_free(packed, size);
+		return (error);
+	}
+
+	kmem_free(packed, size);
+
+	*nvp = list;
+	return (0);
+}
+
+static int
+put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
+{
+	char *packed = NULL;
+	size_t size;
+	int error;
+
+	VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0);
+
+	if (size > zc->zc_nvlist_dst_size) {
+		error = ENOMEM;
+	} else {
+		packed = kmem_alloc(size, KM_SLEEP);
+		VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
+		    KM_SLEEP) == 0);
+		error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
+		    size);
+		kmem_free(packed, size);
+	}
+
+	zc->zc_nvlist_dst_size = size;
+	return (error);
+}
+
+static int
+zfs_ioc_pool_create(zfs_cmd_t *zc)
+{
+	int error;
+	nvlist_t *config, *props = NULL;
+	nvlist_t *rootprops = NULL;
+	nvlist_t *zplprops = NULL;
+	char *buf;
+
+	if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
+	    &config))
+		return (error);
+
+	if (zc->zc_nvlist_src_size != 0 && (error =
+	    get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) {
+		nvlist_free(config);
+		return (error);
+	}
+
+	if (props) {
+		nvlist_t *nvl = NULL;
+		uint64_t version = SPA_VERSION;
+
+		(void) nvlist_lookup_uint64(props,
+		    zpool_prop_to_name(ZPOOL_PROP_VERSION), &version);
+		if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) {
+			error = EINVAL;
+			goto pool_props_bad;
+		}
+		(void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl);
+		if (nvl) {
+			error = nvlist_dup(nvl, &rootprops, KM_SLEEP);
+			if (error != 0) {
+				nvlist_free(config);
+				nvlist_free(props);
+				return (error);
+			}
+			(void) nvlist_remove_all(props, ZPOOL_ROOTFS_PROPS);
+		}
+		VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+		error = zfs_fill_zplprops_root(version, rootprops,
+		    zplprops, NULL);
+		if (error)
+			goto pool_props_bad;
+	}
+
+	buf = history_str_get(zc);
+
+	error = spa_create(zc->zc_name, config, props, buf, zplprops);
+
+	/*
+	 * Set the remaining root properties
+	 */
+	if (!error &&
+	    (error = zfs_set_prop_nvlist(zc->zc_name, rootprops)) != 0)
+		(void) spa_destroy(zc->zc_name);
+
+	if (buf != NULL)
+		history_str_free(buf);
+
+pool_props_bad:
+	nvlist_free(rootprops);
+	nvlist_free(zplprops);
+	nvlist_free(config);
+	nvlist_free(props);
+
+	return (error);
+}
+
+static int
+zfs_ioc_pool_destroy(zfs_cmd_t *zc)
+{
+	int error;
+	zfs_log_history(zc);
+	error = spa_destroy(zc->zc_name);
+	return (error);
+}
+
+static int
+zfs_ioc_pool_import(zfs_cmd_t *zc)
+{
+	int error;
+	nvlist_t *config, *props = NULL;
+	uint64_t guid;
+
+	if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
+	    &config)) != 0)
+		return (error);
+
+	if (zc->zc_nvlist_src_size != 0 && (error =
+	    get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) {
+		nvlist_free(config);
+		return (error);
+	}
+
+	if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
+	    guid != zc->zc_guid)
+		error = EINVAL;
+	else if (zc->zc_cookie)
+		error = spa_import_faulted(zc->zc_name, config,
+		    props);
+	else
+		error = spa_import(zc->zc_name, config, props);
+
+	nvlist_free(config);
+
+	if (props)
+		nvlist_free(props);
+
+	return (error);
+}
+
+static int
+zfs_ioc_pool_export(zfs_cmd_t *zc)
+{
+	int error;
+	boolean_t force = (boolean_t)zc->zc_cookie;
+
+	zfs_log_history(zc);
+	error = spa_export(zc->zc_name, NULL, force);
+	return (error);
+}
+
+static int
+zfs_ioc_pool_configs(zfs_cmd_t *zc)
+{
+	nvlist_t *configs;
+	int error;
+
+	if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
+		return (EEXIST);
+
+	error = put_nvlist(zc, configs);
+
+	nvlist_free(configs);
+
+	return (error);
+}
+
+static int
+zfs_ioc_pool_stats(zfs_cmd_t *zc)
+{
+	nvlist_t *config;
+	int error;
+	int ret = 0;
+
+	error = spa_get_stats(zc->zc_name, &config, zc->zc_value,
+	    sizeof (zc->zc_value));
+
+	if (config != NULL) {
+		ret = put_nvlist(zc, config);
+		nvlist_free(config);
+
+		/*
+		 * The config may be present even if 'error' is non-zero.
+		 * In this case we return success, and preserve the real errno
+		 * in 'zc_cookie'.
+		 */
+		zc->zc_cookie = error;
+	} else {
+		ret = error;
+	}
+
+	return (ret);
+}
+
+/*
+ * Try to import the given pool, returning pool stats as appropriate so that
+ * user land knows which devices are available and overall pool health.
+ */
+static int
+zfs_ioc_pool_tryimport(zfs_cmd_t *zc)
+{
+	nvlist_t *tryconfig, *config;
+	int error;
+
+	if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
+	    &tryconfig)) != 0)
+		return (error);
+
+	config = spa_tryimport(tryconfig);
+
+	nvlist_free(tryconfig);
+
+	if (config == NULL)
+		return (EINVAL);
+
+	error = put_nvlist(zc, config);
+	nvlist_free(config);
+
+	return (error);
+}
+
+static int
+zfs_ioc_pool_scrub(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	int error;
+
+	if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+		return (error);
+
+	error = spa_scrub(spa, zc->zc_cookie);
+
+	spa_close(spa, FTAG);
+
+	return (error);
+}
+
+static int
+zfs_ioc_pool_freeze(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	int error;
+
+	error = spa_open(zc->zc_name, &spa, FTAG);
+	if (error == 0) {
+		spa_freeze(spa);
+		spa_close(spa, FTAG);
+	}
+	return (error);
+}
+
+static int
+zfs_ioc_pool_upgrade(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	int error;
+
+	if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+		return (error);
+
+	if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) {
+		spa_close(spa, FTAG);
+		return (EINVAL);
+	}
+
+	spa_upgrade(spa, zc->zc_cookie);
+	spa_close(spa, FTAG);
+
+	return (error);
+}
+
+static int
+zfs_ioc_pool_get_history(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	char *hist_buf;
+	uint64_t size;
+	int error;
+
+	if ((size = zc->zc_history_len) == 0)
+		return (EINVAL);
+
+	if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+		return (error);
+
+	if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
+		spa_close(spa, FTAG);
+		return (ENOTSUP);
+	}
+
+	hist_buf = kmem_alloc(size, KM_SLEEP);
+	if ((error = spa_history_get(spa, &zc->zc_history_offset,
+	    &zc->zc_history_len, hist_buf)) == 0) {
+		error = xcopyout(hist_buf,
+		    (char *)(uintptr_t)zc->zc_history,
+		    zc->zc_history_len);
+	}
+
+	spa_close(spa, FTAG);
+	kmem_free(hist_buf, size);
+	return (error);
+}
+
+static int
+zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
+{
+	int error;
+
+	if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value))
+		return (error);
+
+	return (0);
+}
+
+static int
+zfs_ioc_obj_to_path(zfs_cmd_t *zc)
+{
+	objset_t *osp;
+	int error;
+
+	if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS,
+	    DS_MODE_USER | DS_MODE_READONLY, &osp)) != 0)
+		return (error);
+	error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value,
+	    sizeof (zc->zc_value));
+	dmu_objset_close(osp);
+
+	return (error);
+}
+
+static int
+zfs_ioc_vdev_add(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	int error;
+	nvlist_t *config, **l2cache, **spares;
+	uint_t nl2cache = 0, nspares = 0;
+
+	error = spa_open(zc->zc_name, &spa, FTAG);
+	if (error != 0)
+		return (error);
+
+	error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
+	    &config);
+	(void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
+	    &l2cache, &nl2cache);
+
+	(void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
+	    &spares, &nspares);
+
+	/*
+	 * A root pool with concatenated devices is not supported.
+	 * Thus, can not add a device to a root pool.
+	 *
+	 * Intent log device can not be added to a rootpool because
+	 * during mountroot, zil is replayed, a seperated log device
+	 * can not be accessed during the mountroot time.
+	 *
+	 * l2cache and spare devices are ok to be added to a rootpool.
+	 */
+	if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) {
+		spa_close(spa, FTAG);
+		return (EDOM);
+	}
+
+	if (error == 0) {
+		error = spa_vdev_add(spa, config);
+		nvlist_free(config);
+	}
+	spa_close(spa, FTAG);
+	return (error);
+}
+
+static int
+zfs_ioc_vdev_remove(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	int error;
+
+	error = spa_open(zc->zc_name, &spa, FTAG);
+	if (error != 0)
+		return (error);
+	error = spa_vdev_remove(spa, zc->zc_guid, B_FALSE);
+	spa_close(spa, FTAG);
+	return (error);
+}
+
+static int
+zfs_ioc_vdev_set_state(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	int error;
+	vdev_state_t newstate = VDEV_STATE_UNKNOWN;
+
+	if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+		return (error);
+	switch (zc->zc_cookie) {
+	case VDEV_STATE_ONLINE:
+		error = vdev_online(spa, zc->zc_guid, zc->zc_obj, &newstate);
+		break;
+
+	case VDEV_STATE_OFFLINE:
+		error = vdev_offline(spa, zc->zc_guid, zc->zc_obj);
+		break;
+
+	case VDEV_STATE_FAULTED:
+		error = vdev_fault(spa, zc->zc_guid);
+		break;
+
+	case VDEV_STATE_DEGRADED:
+		error = vdev_degrade(spa, zc->zc_guid);
+		break;
+
+	default:
+		error = EINVAL;
+	}
+	zc->zc_cookie = newstate;
+	spa_close(spa, FTAG);
+	return (error);
+}
+
+static int
+zfs_ioc_vdev_attach(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	int replacing = zc->zc_cookie;
+	nvlist_t *config;
+	int error;
+
+	if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+		return (error);
+
+	if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
+	    &config)) == 0) {
+		error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
+		nvlist_free(config);
+	}
+
+	spa_close(spa, FTAG);
+	return (error);
+}
+
+static int
+zfs_ioc_vdev_detach(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	int error;
+
+	if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+		return (error);
+
+	error = spa_vdev_detach(spa, zc->zc_guid, B_FALSE);
+
+	spa_close(spa, FTAG);
+	return (error);
+}
+
+static int
+zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	char *path = zc->zc_value;
+	uint64_t guid = zc->zc_guid;
+	int error;
+
+	error = spa_open(zc->zc_name, &spa, FTAG);
+	if (error != 0)
+		return (error);
+
+	error = spa_vdev_setpath(spa, guid, path);
+	spa_close(spa, FTAG);
+	return (error);
+}
+
+/*
+ * inputs:
+ * zc_name		name of filesystem
+ * zc_nvlist_dst_size	size of buffer for property nvlist
+ *
+ * outputs:
+ * zc_objset_stats	stats
+ * zc_nvlist_dst	property nvlist
+ * zc_nvlist_dst_size	size of property nvlist
+ */
+static int
+zfs_ioc_objset_stats(zfs_cmd_t *zc)
+{
+	objset_t *os = NULL;
+	int error;
+	nvlist_t *nv;
+
+	if (error = dmu_objset_open(zc->zc_name,
+	    DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os))
+		return (error);
+
+	dmu_objset_fast_stat(os, &zc->zc_objset_stats);
+
+	if (zc->zc_nvlist_dst != 0 &&
+	    (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) {
+		dmu_objset_stats(os, nv);
+		/*
+		 * NB: zvol_get_stats() will read the objset contents,
+		 * which we aren't supposed to do with a
+		 * DS_MODE_USER hold, because it could be
+		 * inconsistent.  So this is a bit of a workaround...
+		 */
+		if (!zc->zc_objset_stats.dds_inconsistent) {
+			if (dmu_objset_type(os) == DMU_OST_ZVOL)
+				VERIFY(zvol_get_stats(os, nv) == 0);
+		}
+		error = put_nvlist(zc, nv);
+		nvlist_free(nv);
+	}
+
+	dmu_objset_close(os);
+	return (error);
+}
+
+static int
+nvl_add_zplprop(objset_t *os, nvlist_t *props, zfs_prop_t prop)
+{
+	uint64_t value;
+	int error;
+
+	/*
+	 * zfs_get_zplprop() will either find a value or give us
+	 * the default value (if there is one).
+	 */
+	if ((error = zfs_get_zplprop(os, prop, &value)) != 0)
+		return (error);
+	VERIFY(nvlist_add_uint64(props, zfs_prop_to_name(prop), value) == 0);
+	return (0);
+}
+
+/*
+ * inputs:
+ * zc_name		name of filesystem
+ * zc_nvlist_dst_size	size of buffer for zpl property nvlist
+ *
+ * outputs:
+ * zc_nvlist_dst	zpl property nvlist
+ * zc_nvlist_dst_size	size of zpl property nvlist
+ */
+static int
+zfs_ioc_objset_zplprops(zfs_cmd_t *zc)
+{
+	objset_t *os;
+	int err;
+
+	if (err = dmu_objset_open(zc->zc_name,
+	    DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os))
+		return (err);
+
+	dmu_objset_fast_stat(os, &zc->zc_objset_stats);
+
+	/*
+	 * NB: nvl_add_zplprop() will read the objset contents,
+	 * which we aren't supposed to do with a DS_MODE_USER
+	 * hold, because it could be inconsistent.
+	 */
+	if (zc->zc_nvlist_dst != NULL &&
+	    !zc->zc_objset_stats.dds_inconsistent &&
+	    dmu_objset_type(os) == DMU_OST_ZFS) {
+		nvlist_t *nv;
+
+		VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+		if ((err = nvl_add_zplprop(os, nv, ZFS_PROP_VERSION)) == 0 &&
+		    (err = nvl_add_zplprop(os, nv, ZFS_PROP_NORMALIZE)) == 0 &&
+		    (err = nvl_add_zplprop(os, nv, ZFS_PROP_UTF8ONLY)) == 0 &&
+		    (err = nvl_add_zplprop(os, nv, ZFS_PROP_CASE)) == 0)
+			err = put_nvlist(zc, nv);
+		nvlist_free(nv);
+	} else {
+		err = ENOENT;
+	}
+	dmu_objset_close(os);
+	return (err);
+}
+
+/*
+ * inputs:
+ * zc_name		name of filesystem
+ * zc_cookie		zap cursor
+ * zc_nvlist_dst_size	size of buffer for property nvlist
+ *
+ * outputs:
+ * zc_name		name of next filesystem
+ * zc_objset_stats	stats
+ * zc_nvlist_dst	property nvlist
+ * zc_nvlist_dst_size	size of property nvlist
+ */
+static int
+zfs_ioc_dataset_list_next(zfs_cmd_t *zc)
+{
+	objset_t *os;
+	int error;
+	char *p;
+
+	if (error = dmu_objset_open(zc->zc_name,
+	    DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) {
+		if (error == ENOENT)
+			error = ESRCH;
+		return (error);
+	}
+
+	p = strrchr(zc->zc_name, '/');
+	if (p == NULL || p[1] != '\0')
+		(void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
+	p = zc->zc_name + strlen(zc->zc_name);
+
+	do {
+		error = dmu_dir_list_next(os,
+		    sizeof (zc->zc_name) - (p - zc->zc_name), p,
+		    NULL, &zc->zc_cookie);
+		if (error == ENOENT)
+			error = ESRCH;
+	} while (error == 0 && !INGLOBALZONE(curproc) &&
+	    !zone_dataset_visible(zc->zc_name, NULL));
+	dmu_objset_close(os);
+
+	/*
+	 * If it's a hidden dataset (ie. with a '$' in its name), don't
+	 * try to get stats for it.  Userland will skip over it.
+	 */
+	if (error == 0 && strchr(zc->zc_name, '$') == NULL)
+		error = zfs_ioc_objset_stats(zc); /* fill in the stats */
+
+	return (error);
+}
+
+/*
+ * inputs:
+ * zc_name		name of filesystem
+ * zc_cookie		zap cursor
+ * zc_nvlist_dst_size	size of buffer for property nvlist
+ *
+ * outputs:
+ * zc_name		name of next snapshot
+ * zc_objset_stats	stats
+ * zc_nvlist_dst	property nvlist
+ * zc_nvlist_dst_size	size of property nvlist
+ */
+static int
+zfs_ioc_snapshot_list_next(zfs_cmd_t *zc)
+{
+	objset_t *os;
+	int error;
+
+	error = dmu_objset_open(zc->zc_name,
+	    DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os);
+	if (error)
+		return (error == ENOENT ? ESRCH : error);
+
+	/*
+	 * A dataset name of maximum length cannot have any snapshots,
+	 * so exit immediately.
+	 */
+	if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) {
+		dmu_objset_close(os);
+		return (ESRCH);
+	}
+
+	error = dmu_snapshot_list_next(os,
+	    sizeof (zc->zc_name) - strlen(zc->zc_name),
+	    zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL);
+	dmu_objset_close(os);
+	if (error == 0)
+		error = zfs_ioc_objset_stats(zc); /* fill in the stats */
+	else if (error == ENOENT)
+		error = ESRCH;
+
+	/* if we failed, undo the @ that we tacked on to zc_name */
+	if (error)
+		*strchr(zc->zc_name, '@') = '\0';
+	return (error);
+}
+
+int
+zfs_set_prop_nvlist(const char *name, nvlist_t *nvl)
+{
+	nvpair_t *elem;
+	int error;
+	uint64_t intval;
+	char *strval;
+
+	/*
+	 * First validate permission to set all of the properties
+	 */
+	elem = NULL;
+	while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
+		const char *propname = nvpair_name(elem);
+		zfs_prop_t prop = zfs_name_to_prop(propname);
+
+		if (prop == ZPROP_INVAL) {
+			/*
+			 * If this is a user-defined property, it must be a
+			 * string, and there is no further validation to do.
+			 */
+			if (!zfs_prop_user(propname) ||
+			    nvpair_type(elem) != DATA_TYPE_STRING)
+				return (EINVAL);
+
+			if (error = zfs_secpolicy_write_perms(name,
+			    ZFS_DELEG_PERM_USERPROP, CRED()))
+				return (error);
+			continue;
+		}
+
+		if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0)
+			return (error);
+
+		/*
+		 * Check that this value is valid for this pool version
+		 */
+		switch (prop) {
+		case ZFS_PROP_COMPRESSION:
+			/*
+			 * If the user specified gzip compression, make sure
+			 * the SPA supports it. We ignore any errors here since
+			 * we'll catch them later.
+			 */
+			if (nvpair_type(elem) == DATA_TYPE_UINT64 &&
+			    nvpair_value_uint64(elem, &intval) == 0) {
+				if (intval >= ZIO_COMPRESS_GZIP_1 &&
+				    intval <= ZIO_COMPRESS_GZIP_9 &&
+				    zfs_earlier_version(name,
+				    SPA_VERSION_GZIP_COMPRESSION))
+					return (ENOTSUP);
+
+				/*
+				 * If this is a bootable dataset then
+				 * verify that the compression algorithm
+				 * is supported for booting. We must return
+				 * something other than ENOTSUP since it
+				 * implies a downrev pool version.
+				 */
+				if (zfs_is_bootfs(name) &&
+				    !BOOTFS_COMPRESS_VALID(intval))
+					return (ERANGE);
+			}
+			break;
+
+		case ZFS_PROP_COPIES:
+			if (zfs_earlier_version(name,
+			    SPA_VERSION_DITTO_BLOCKS))
+				return (ENOTSUP);
+			break;
+
+		case ZFS_PROP_SHARESMB:
+			if (zpl_earlier_version(name, ZPL_VERSION_FUID))
+				return (ENOTSUP);
+			break;
+
+		case ZFS_PROP_ACLINHERIT:
+			if (nvpair_type(elem) == DATA_TYPE_UINT64 &&
+			    nvpair_value_uint64(elem, &intval) == 0)
+				if (intval == ZFS_ACL_PASSTHROUGH_X &&
+				    zfs_earlier_version(name,
+				    SPA_VERSION_PASSTHROUGH_X))
+					return (ENOTSUP);
+		}
+	}
+
+	elem = NULL;
+	while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
+		const char *propname = nvpair_name(elem);
+		zfs_prop_t prop = zfs_name_to_prop(propname);
+
+		if (prop == ZPROP_INVAL) {
+			VERIFY(nvpair_value_string(elem, &strval) == 0);
+			error = dsl_prop_set(name, propname, 1,
+			    strlen(strval) + 1, strval);
+			if (error == 0)
+				continue;
+			else
+				return (error);
+		}
+
+		switch (prop) {
+		case ZFS_PROP_QUOTA:
+			if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
+			    (error = dsl_dir_set_quota(name, intval)) != 0)
+				return (error);
+			break;
+
+		case ZFS_PROP_REFQUOTA:
+			if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
+			    (error = dsl_dataset_set_quota(name, intval)) != 0)
+				return (error);
+			break;
+
+		case ZFS_PROP_RESERVATION:
+			if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
+			    (error = dsl_dir_set_reservation(name,
+			    intval)) != 0)
+				return (error);
+			break;
+
+		case ZFS_PROP_REFRESERVATION:
+			if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
+			    (error = dsl_dataset_set_reservation(name,
+			    intval)) != 0)
+				return (error);
+			break;
+
+		case ZFS_PROP_VOLSIZE:
+			if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
+			    (error = zvol_set_volsize(name,
+			    ddi_driver_major(zfs_dip), intval)) != 0)
+				return (error);
+			break;
+
+		case ZFS_PROP_VOLBLOCKSIZE:
+			if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
+			    (error = zvol_set_volblocksize(name, intval)) != 0)
+				return (error);
+			break;
+
+		case ZFS_PROP_VERSION:
+			if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
+			    (error = zfs_set_version(name, intval)) != 0)
+				return (error);
+			break;
+
+		default:
+			if (nvpair_type(elem) == DATA_TYPE_STRING) {
+				if (zfs_prop_get_type(prop) !=
+				    PROP_TYPE_STRING)
+					return (EINVAL);
+				VERIFY(nvpair_value_string(elem, &strval) == 0);
+				if ((error = dsl_prop_set(name,
+				    nvpair_name(elem), 1, strlen(strval) + 1,
+				    strval)) != 0)
+					return (error);
+			} else if (nvpair_type(elem) == DATA_TYPE_UINT64) {
+				const char *unused;
+
+				VERIFY(nvpair_value_uint64(elem, &intval) == 0);
+
+				switch (zfs_prop_get_type(prop)) {
+				case PROP_TYPE_NUMBER:
+					break;
+				case PROP_TYPE_STRING:
+					return (EINVAL);
+				case PROP_TYPE_INDEX:
+					if (zfs_prop_index_to_string(prop,
+					    intval, &unused) != 0)
+						return (EINVAL);
+					break;
+				default:
+					cmn_err(CE_PANIC,
+					    "unknown property type");
+					break;
+				}
+
+				if ((error = dsl_prop_set(name, propname,
+				    8, 1, &intval)) != 0)
+					return (error);
+			} else {
+				return (EINVAL);
+			}
+			break;
+		}
+	}
+
+	return (0);
+}
+
+/*
+ * inputs:
+ * zc_name		name of filesystem
+ * zc_value		name of property to inherit
+ * zc_nvlist_src{_size}	nvlist of properties to apply
+ * zc_cookie		clear existing local props?
+ *
+ * outputs:		none
+ */
+static int
+zfs_ioc_set_prop(zfs_cmd_t *zc)
+{
+	nvlist_t *nvl;
+	int error;
+
+	if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+	    &nvl)) != 0)
+		return (error);
+
+	if (zc->zc_cookie) {
+		nvlist_t *origprops;
+		objset_t *os;
+
+		if (dmu_objset_open(zc->zc_name, DMU_OST_ANY,
+		    DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
+			if (dsl_prop_get_all(os, &origprops, TRUE) == 0) {
+				clear_props(zc->zc_name, origprops);
+				nvlist_free(origprops);
+			}
+			dmu_objset_close(os);
+		}
+
+	}
+
+	error = zfs_set_prop_nvlist(zc->zc_name, nvl);
+
+	nvlist_free(nvl);
+	return (error);
+}
+
+/*
+ * inputs:
+ * zc_name		name of filesystem
+ * zc_value		name of property to inherit
+ *
+ * outputs:		none
+ */
+static int
+zfs_ioc_inherit_prop(zfs_cmd_t *zc)
+{
+	/* the property name has been validated by zfs_secpolicy_inherit() */
+	return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL));
+}
+
+static int
+zfs_ioc_pool_set_props(zfs_cmd_t *zc)
+{
+	nvlist_t *props;
+	spa_t *spa;
+	int error;
+
+	if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+	    &props)))
+		return (error);
+
+	if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
+		nvlist_free(props);
+		return (error);
+	}
+
+	error = spa_prop_set(spa, props);
+
+	nvlist_free(props);
+	spa_close(spa, FTAG);
+
+	return (error);
+}
+
+static int
+zfs_ioc_pool_get_props(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	int error;
+	nvlist_t *nvp = NULL;
+
+	if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+		return (error);
+
+	error = spa_prop_get(spa, &nvp);
+
+	if (error == 0 && zc->zc_nvlist_dst != NULL)
+		error = put_nvlist(zc, nvp);
+	else
+		error = EFAULT;
+
+	spa_close(spa, FTAG);
+
+	if (nvp)
+		nvlist_free(nvp);
+	return (error);
+}
+
+static int
+zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc)
+{
+	nvlist_t *nvp;
+	int error;
+	uint32_t uid;
+	uint32_t gid;
+	uint32_t *groups;
+	uint_t group_cnt;
+	cred_t	*usercred;
+
+	if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+	    &nvp)) != 0) {
+		return (error);
+	}
+
+	if ((error = nvlist_lookup_uint32(nvp,
+	    ZFS_DELEG_PERM_UID, &uid)) != 0) {
+		nvlist_free(nvp);
+		return (EPERM);
+	}
+
+	if ((error = nvlist_lookup_uint32(nvp,
+	    ZFS_DELEG_PERM_GID, &gid)) != 0) {
+		nvlist_free(nvp);
+		return (EPERM);
+	}
+
+	if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS,
+	    &groups, &group_cnt)) != 0) {
+		nvlist_free(nvp);
+		return (EPERM);
+	}
+	usercred = cralloc();
+	if ((crsetugid(usercred, uid, gid) != 0) ||
+	    (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) {
+		nvlist_free(nvp);
+		crfree(usercred);
+		return (EPERM);
+	}
+	nvlist_free(nvp);
+	error = dsl_deleg_access(zc->zc_name,
+	    zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred);
+	crfree(usercred);
+	return (error);
+}
+
+/*
+ * inputs:
+ * zc_name		name of filesystem
+ * zc_nvlist_src{_size}	nvlist of delegated permissions
+ * zc_perm_action	allow/unallow flag
+ *
+ * outputs:		none
+ */
+static int
+zfs_ioc_set_fsacl(zfs_cmd_t *zc)
+{
+	int error;
+	nvlist_t *fsaclnv = NULL;
+
+	if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+	    &fsaclnv)) != 0)
+		return (error);
+
+	/*
+	 * Verify nvlist is constructed correctly
+	 */
+	if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
+		nvlist_free(fsaclnv);
+		return (EINVAL);
+	}
+
+	/*
+	 * If we don't have PRIV_SYS_MOUNT, then validate
+	 * that user is allowed to hand out each permission in
+	 * the nvlist(s)
+	 */
+
+	error = secpolicy_zfs(CRED());
+	if (error) {
+		if (zc->zc_perm_action == B_FALSE) {
+			error = dsl_deleg_can_allow(zc->zc_name,
+			    fsaclnv, CRED());
+		} else {
+			error = dsl_deleg_can_unallow(zc->zc_name,
+			    fsaclnv, CRED());
+		}
+	}
+
+	if (error == 0)
+		error = dsl_deleg_set(zc->zc_name, fsaclnv, zc->zc_perm_action);
+
+	nvlist_free(fsaclnv);
+	return (error);
+}
+
+/*
+ * inputs:
+ * zc_name		name of filesystem
+ *
+ * outputs:
+ * zc_nvlist_src{_size}	nvlist of delegated permissions
+ */
+static int
+zfs_ioc_get_fsacl(zfs_cmd_t *zc)
+{
+	nvlist_t *nvp;
+	int error;
+
+	if ((error = dsl_deleg_get(zc->zc_name, &nvp)) == 0) {
+		error = put_nvlist(zc, nvp);
+		nvlist_free(nvp);
+	}
+
+	return (error);
+}
+
+/*
+ * inputs:
+ * zc_name		name of volume
+ *
+ * outputs:		none
+ */
+static int
+zfs_ioc_create_minor(zfs_cmd_t *zc)
+{
+	return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip)));
+}
+
+/*
+ * inputs:
+ * zc_name		name of volume
+ *
+ * outputs:		none
+ */
+static int
+zfs_ioc_remove_minor(zfs_cmd_t *zc)
+{
+	return (zvol_remove_minor(zc->zc_name));
+}
+
+/*
+ * Search the vfs list for a specified resource.  Returns a pointer to it
+ * or NULL if no suitable entry is found. The caller of this routine
+ * is responsible for releasing the returned vfs pointer.
+ */
+static vfs_t *
+zfs_get_vfs(const char *resource)
+{
+	struct vfs *vfsp;
+	struct vfs *vfs_found = NULL;
+
+	vfs_list_read_lock();
+	vfsp = rootvfs;
+	do {
+		if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) {
+			VFS_HOLD(vfsp);
+			vfs_found = vfsp;
+			break;
+		}
+		vfsp = vfsp->vfs_next;
+	} while (vfsp != rootvfs);
+	vfs_list_unlock();
+	return (vfs_found);
+}
+
+/* ARGSUSED */
+static void
+zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
+{
+	zfs_creat_t *zct = arg;
+
+	zfs_create_fs(os, cr, zct->zct_zplprops, tx);
+}
+
+#define	ZFS_PROP_UNDEFINED	((uint64_t)-1)
+
+/*
+ * inputs:
+ * createprops		list of properties requested by creator
+ * default_zplver	zpl version to use if unspecified in createprops
+ * fuids_ok		fuids allowed in this version of the spa?
+ * os			parent objset pointer (NULL if root fs)
+ *
+ * outputs:
+ * zplprops	values for the zplprops we attach to the master node object
+ * is_ci	true if requested file system will be purely case-insensitive
+ *
+ * Determine the settings for utf8only, normalization and
+ * casesensitivity.  Specific values may have been requested by the
+ * creator and/or we can inherit values from the parent dataset.  If
+ * the file system is of too early a vintage, a creator can not
+ * request settings for these properties, even if the requested
+ * setting is the default value.  We don't actually want to create dsl
+ * properties for these, so remove them from the source nvlist after
+ * processing.
+ */
+static int
+zfs_fill_zplprops_impl(objset_t *os, uint64_t default_zplver,
+    boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops,
+    boolean_t *is_ci)
+{
+	uint64_t zplver = default_zplver;
+	uint64_t sense = ZFS_PROP_UNDEFINED;
+	uint64_t norm = ZFS_PROP_UNDEFINED;
+	uint64_t u8 = ZFS_PROP_UNDEFINED;
+
+	ASSERT(zplprops != NULL);
+
+	/*
+	 * Pull out creator prop choices, if any.
+	 */
+	if (createprops) {
+		(void) nvlist_lookup_uint64(createprops,
+		    zfs_prop_to_name(ZFS_PROP_VERSION), &zplver);
+		(void) nvlist_lookup_uint64(createprops,
+		    zfs_prop_to_name(ZFS_PROP_NORMALIZE), &norm);
+		(void) nvlist_remove_all(createprops,
+		    zfs_prop_to_name(ZFS_PROP_NORMALIZE));
+		(void) nvlist_lookup_uint64(createprops,
+		    zfs_prop_to_name(ZFS_PROP_UTF8ONLY), &u8);
+		(void) nvlist_remove_all(createprops,
+		    zfs_prop_to_name(ZFS_PROP_UTF8ONLY));
+		(void) nvlist_lookup_uint64(createprops,
+		    zfs_prop_to_name(ZFS_PROP_CASE), &sense);
+		(void) nvlist_remove_all(createprops,
+		    zfs_prop_to_name(ZFS_PROP_CASE));
+	}
+
+	/*
+	 * If the zpl version requested is whacky or the file system
+	 * or pool is version is too "young" to support normalization
+	 * and the creator tried to set a value for one of the props,
+	 * error out.
+	 */
+	if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) ||
+	    (zplver >= ZPL_VERSION_FUID && !fuids_ok) ||
+	    (zplver < ZPL_VERSION_NORMALIZATION &&
+	    (norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
+	    sense != ZFS_PROP_UNDEFINED)))
+		return (ENOTSUP);
+
+	/*
+	 * Put the version in the zplprops
+	 */
+	VERIFY(nvlist_add_uint64(zplprops,
+	    zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
+
+	if (norm == ZFS_PROP_UNDEFINED)
+		VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0);
+	VERIFY(nvlist_add_uint64(zplprops,
+	    zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
+
+	/*
+	 * If we're normalizing, names must always be valid UTF-8 strings.
+	 */
+	if (norm)
+		u8 = 1;
+	if (u8 == ZFS_PROP_UNDEFINED)
+		VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0);
+	VERIFY(nvlist_add_uint64(zplprops,
+	    zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
+
+	if (sense == ZFS_PROP_UNDEFINED)
+		VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0);
+	VERIFY(nvlist_add_uint64(zplprops,
+	    zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
+
+	if (is_ci)
+		*is_ci = (sense == ZFS_CASE_INSENSITIVE);
+
+	return (0);
+}
+
+static int
+zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
+    nvlist_t *zplprops, boolean_t *is_ci)
+{
+	boolean_t fuids_ok = B_TRUE;
+	uint64_t zplver = ZPL_VERSION;
+	objset_t *os = NULL;
+	char parentname[MAXNAMELEN];
+	char *cp;
+	int error;
+
+	(void) strlcpy(parentname, dataset, sizeof (parentname));
+	cp = strrchr(parentname, '/');
+	ASSERT(cp != NULL);
+	cp[0] = '\0';
+
+	if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) {
+		zplver = ZPL_VERSION_FUID - 1;
+		fuids_ok = B_FALSE;
+	}
+
+	/*
+	 * Open parent object set so we can inherit zplprop values.
+	 */
+	if ((error = dmu_objset_open(parentname, DMU_OST_ANY,
+	    DS_MODE_USER | DS_MODE_READONLY, &os)) != 0)
+		return (error);
+
+	error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops,
+	    zplprops, is_ci);
+	dmu_objset_close(os);
+	return (error);
+}
+
+static int
+zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops,
+    nvlist_t *zplprops, boolean_t *is_ci)
+{
+	boolean_t fuids_ok = B_TRUE;
+	uint64_t zplver = ZPL_VERSION;
+	int error;
+
+	if (spa_vers < SPA_VERSION_FUID) {
+		zplver = ZPL_VERSION_FUID - 1;
+		fuids_ok = B_FALSE;
+	}
+
+	error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops,
+	    zplprops, is_ci);
+	return (error);
+}
+
+/*
+ * inputs:
+ * zc_objset_type	type of objset to create (fs vs zvol)
+ * zc_name		name of new objset
+ * zc_value		name of snapshot to clone from (may be empty)
+ * zc_nvlist_src{_size}	nvlist of properties to apply
+ *
+ * outputs: none
+ */
+static int
+zfs_ioc_create(zfs_cmd_t *zc)
+{
+	objset_t *clone;
+	int error = 0;
+	zfs_creat_t zct;
+	nvlist_t *nvprops = NULL;
+	void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
+	dmu_objset_type_t type = zc->zc_objset_type;
+
+	switch (type) {
+
+	case DMU_OST_ZFS:
+		cbfunc = zfs_create_cb;
+		break;
+
+	case DMU_OST_ZVOL:
+		cbfunc = zvol_create_cb;
+		break;
+
+	default:
+		cbfunc = NULL;
+		break;
+	}
+	if (strchr(zc->zc_name, '@') ||
+	    strchr(zc->zc_name, '%'))
+		return (EINVAL);
+
+	if (zc->zc_nvlist_src != NULL &&
+	    (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+	    &nvprops)) != 0)
+		return (error);
+
+	zct.zct_zplprops = NULL;
+	zct.zct_props = nvprops;
+
+	if (zc->zc_value[0] != '\0') {
+		/*
+		 * We're creating a clone of an existing snapshot.
+		 */
+		zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
+		if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) {
+			nvlist_free(nvprops);
+			return (EINVAL);
+		}
+
+		error = dmu_objset_open(zc->zc_value, type,
+		    DS_MODE_USER | DS_MODE_READONLY, &clone);
+		if (error) {
+			nvlist_free(nvprops);
+			return (error);
+		}
+
+		error = dmu_objset_create(zc->zc_name, type, clone, 0,
+		    NULL, NULL);
+		if (error) {
+			dmu_objset_close(clone);
+			nvlist_free(nvprops);
+			return (error);
+		}
+		dmu_objset_close(clone);
+	} else {
+		boolean_t is_insensitive = B_FALSE;
+
+		if (cbfunc == NULL) {
+			nvlist_free(nvprops);
+			return (EINVAL);
+		}
+
+		if (type == DMU_OST_ZVOL) {
+			uint64_t volsize, volblocksize;
+
+			if (nvprops == NULL ||
+			    nvlist_lookup_uint64(nvprops,
+			    zfs_prop_to_name(ZFS_PROP_VOLSIZE),
+			    &volsize) != 0) {
+				nvlist_free(nvprops);
+				return (EINVAL);
+			}
+
+			if ((error = nvlist_lookup_uint64(nvprops,
+			    zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
+			    &volblocksize)) != 0 && error != ENOENT) {
+				nvlist_free(nvprops);
+				return (EINVAL);
+			}
+
+			if (error != 0)
+				volblocksize = zfs_prop_default_numeric(
+				    ZFS_PROP_VOLBLOCKSIZE);
+
+			if ((error = zvol_check_volblocksize(
+			    volblocksize)) != 0 ||
+			    (error = zvol_check_volsize(volsize,
+			    volblocksize)) != 0) {
+				nvlist_free(nvprops);
+				return (error);
+			}
+		} else if (type == DMU_OST_ZFS) {
+			int error;
+
+			/*
+			 * We have to have normalization and
+			 * case-folding flags correct when we do the
+			 * file system creation, so go figure them out
+			 * now.
+			 */
+			VERIFY(nvlist_alloc(&zct.zct_zplprops,
+			    NV_UNIQUE_NAME, KM_SLEEP) == 0);
+			error = zfs_fill_zplprops(zc->zc_name, nvprops,
+			    zct.zct_zplprops, &is_insensitive);
+			if (error != 0) {
+				nvlist_free(nvprops);
+				nvlist_free(zct.zct_zplprops);
+				return (error);
+			}
+		}
+		error = dmu_objset_create(zc->zc_name, type, NULL,
+		    is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
+		nvlist_free(zct.zct_zplprops);
+	}
+
+	/*
+	 * It would be nice to do this atomically.
+	 */
+	if (error == 0) {
+		if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0)
+			(void) dmu_objset_destroy(zc->zc_name);
+	}
+	nvlist_free(nvprops);
+	return (error);
+}
+
+struct snap_prop_arg {
+	nvlist_t *nvprops;
+	const char *snapname;
+};
+
+static int
+set_snap_props(char *name, void *arg)
+{
+	struct snap_prop_arg *snpa = arg;
+	int len = strlen(name) + strlen(snpa->snapname) + 2;
+	char *buf = kmem_alloc(len, KM_SLEEP);
+	int err;
+
+	(void) snprintf(buf, len, "%s@%s", name, snpa->snapname);
+	err = zfs_set_prop_nvlist(buf, snpa->nvprops);
+	if (err)
+		(void) dmu_objset_destroy(buf);
+	kmem_free(buf, len);
+	return (err);
+}
+
+/*
+ * inputs:
+ * zc_name	name of filesystem
+ * zc_value	short name of snapshot
+ * zc_cookie	recursive flag
+ *
+ * outputs:	none
+ */
+static int
+zfs_ioc_snapshot(zfs_cmd_t *zc)
+{
+	nvlist_t *nvprops = NULL;
+	int error;
+	boolean_t recursive = zc->zc_cookie;
+
+	if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
+		return (EINVAL);
+
+	if (zc->zc_nvlist_src != NULL &&
+	    (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+	    &nvprops)) != 0)
+		return (error);
+
+	error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, recursive);
+
+	/*
+	 * It would be nice to do this atomically.
+	 */
+	if (error == 0) {
+		struct snap_prop_arg snpa;
+		snpa.nvprops = nvprops;
+		snpa.snapname = zc->zc_value;
+		if (recursive) {
+			error = dmu_objset_find(zc->zc_name,
+			    set_snap_props, &snpa, DS_FIND_CHILDREN);
+			if (error) {
+				(void) dmu_snapshots_destroy(zc->zc_name,
+				    zc->zc_value);
+			}
+		} else {
+			error = set_snap_props(zc->zc_name, &snpa);
+		}
+	}
+	nvlist_free(nvprops);
+	return (error);
+}
+
+int
+zfs_unmount_snap(char *name, void *arg)
+{
+	vfs_t *vfsp = NULL;
+
+	if (arg) {
+		char *snapname = arg;
+		int len = strlen(name) + strlen(snapname) + 2;
+		char *buf = kmem_alloc(len, KM_SLEEP);
+
+		(void) strcpy(buf, name);
+		(void) strcat(buf, "@");
+		(void) strcat(buf, snapname);
+		vfsp = zfs_get_vfs(buf);
+		kmem_free(buf, len);
+	} else if (strchr(name, '@')) {
+		vfsp = zfs_get_vfs(name);
+	}
+
+	if (vfsp) {
+		/*
+		 * Always force the unmount for snapshots.
+		 */
+		int flag = MS_FORCE;
+		int err;
+
+		if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) {
+			VFS_RELE(vfsp);
+			return (err);
+		}
+		VFS_RELE(vfsp);
+		if ((err = dounmount(vfsp, flag, kcred)) != 0)
+			return (err);
+	}
+	return (0);
+}
+
+/*
+ * inputs:
+ * zc_name	name of filesystem
+ * zc_value	short name of snapshot
+ *
+ * outputs:	none
+ */
+static int
+zfs_ioc_destroy_snaps(zfs_cmd_t *zc)
+{
+	int err;
+
+	if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
+		return (EINVAL);
+	err = dmu_objset_find(zc->zc_name,
+	    zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN);
+	if (err)
+		return (err);
+	return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value));
+}
+
+/*
+ * inputs:
+ * zc_name		name of dataset to destroy
+ * zc_objset_type	type of objset
+ *
+ * outputs:		none
+ */
+static int
+zfs_ioc_destroy(zfs_cmd_t *zc)
+{
+	if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) {
+		int err = zfs_unmount_snap(zc->zc_name, NULL);
+		if (err)
+			return (err);
+	}
+
+	return (dmu_objset_destroy(zc->zc_name));
+}
+
+/*
+ * inputs:
+ * zc_name	name of dataset to rollback (to most recent snapshot)
+ *
+ * outputs:	none
+ */
+static int
+zfs_ioc_rollback(zfs_cmd_t *zc)
+{
+	objset_t *os;
+	int error;
+	zfsvfs_t *zfsvfs = NULL;
+
+	/*
+	 * Get the zfsvfs for the receiving objset. There
+	 * won't be one if we're operating on a zvol, if the
+	 * objset doesn't exist yet, or is not mounted.
+	 */
+	error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os);
+	if (error)
+		return (error);
+
+	if (dmu_objset_type(os) == DMU_OST_ZFS) {
+		mutex_enter(&os->os->os_user_ptr_lock);
+		zfsvfs = dmu_objset_get_user(os);
+		if (zfsvfs != NULL)
+			VFS_HOLD(zfsvfs->z_vfs);
+		mutex_exit(&os->os->os_user_ptr_lock);
+	}
+
+	if (zfsvfs != NULL) {
+		char *osname;
+		int mode;
+
+		osname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
+		error = zfs_suspend_fs(zfsvfs, osname, &mode);
+		if (error == 0) {
+			int resume_err;
+
+			ASSERT(strcmp(osname, zc->zc_name) == 0);
+			error = dmu_objset_rollback(os);
+			resume_err = zfs_resume_fs(zfsvfs, osname, mode);
+			error = error ? error : resume_err;
+		} else {
+			dmu_objset_close(os);
+		}
+		kmem_free(osname, MAXNAMELEN);
+		VFS_RELE(zfsvfs->z_vfs);
+	} else {
+		error = dmu_objset_rollback(os);
+	}
+	/* Note, the dmu_objset_rollback() releases the objset for us. */
+
+	return (error);
+}
+
+/*
+ * inputs:
+ * zc_name	old name of dataset
+ * zc_value	new name of dataset
+ * zc_cookie	recursive flag (only valid for snapshots)
+ *
+ * outputs:	none
+ */
+static int
+zfs_ioc_rename(zfs_cmd_t *zc)
+{
+	boolean_t recursive = zc->zc_cookie & 1;
+
+	zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
+	if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
+	    strchr(zc->zc_value, '%'))
+		return (EINVAL);
+
+	/*
+	 * Unmount snapshot unless we're doing a recursive rename,
+	 * in which case the dataset code figures out which snapshots
+	 * to unmount.
+	 */
+	if (!recursive && strchr(zc->zc_name, '@') != NULL &&
+	    zc->zc_objset_type == DMU_OST_ZFS) {
+		int err = zfs_unmount_snap(zc->zc_name, NULL);
+		if (err)
+			return (err);
+	}
+	return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive));
+}
+
+static void
+clear_props(char *dataset, nvlist_t *props)
+{
+	zfs_cmd_t *zc;
+	nvpair_t *prop;
+
+	if (props == NULL)
+		return;
+	zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP);
+	(void) strcpy(zc->zc_name, dataset);
+	for (prop = nvlist_next_nvpair(props, NULL); prop;
+	    prop = nvlist_next_nvpair(props, prop)) {
+		(void) strcpy(zc->zc_value, nvpair_name(prop));
+		if (zfs_secpolicy_inherit(zc, CRED()) == 0)
+			(void) zfs_ioc_inherit_prop(zc);
+	}
+	kmem_free(zc, sizeof (zfs_cmd_t));
+}
+
+/*
+ * inputs:
+ * zc_name		name of containing filesystem
+ * zc_nvlist_src{_size}	nvlist of properties to apply
+ * zc_value		name of snapshot to create
+ * zc_string		name of clone origin (if DRR_FLAG_CLONE)
+ * zc_cookie		file descriptor to recv from
+ * zc_begin_record	the BEGIN record of the stream (not byteswapped)
+ * zc_guid		force flag
+ *
+ * outputs:
+ * zc_cookie		number of bytes read
+ */
+static int
+zfs_ioc_recv(zfs_cmd_t *zc)
+{
+	file_t *fp;
+	objset_t *os;
+	dmu_recv_cookie_t drc;
+	zfsvfs_t *zfsvfs = NULL;
+	boolean_t force = (boolean_t)zc->zc_guid;
+	int error, fd;
+	offset_t off;
+	nvlist_t *props = NULL;
+	nvlist_t *origprops = NULL;
+	objset_t *origin = NULL;
+	char *tosnap;
+	char tofs[ZFS_MAXNAMELEN];
+
+	if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
+	    strchr(zc->zc_value, '@') == NULL ||
+	    strchr(zc->zc_value, '%'))
+		return (EINVAL);
+
+	(void) strcpy(tofs, zc->zc_value);
+	tosnap = strchr(tofs, '@');
+	*tosnap = '\0';
+	tosnap++;
+
+	if (zc->zc_nvlist_src != NULL &&
+	    (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+	    &props)) != 0)
+		return (error);
+
+	fd = zc->zc_cookie;
+	fp = getf(fd);
+	if (fp == NULL) {
+		nvlist_free(props);
+		return (EBADF);
+	}
+
+	if (dmu_objset_open(tofs, DMU_OST_ANY,
+	    DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
+		/*
+		 * Try to get the zfsvfs for the receiving objset.
+		 * There won't be one if we're operating on a zvol,
+		 * if the objset doesn't exist yet, or is not mounted.
+		 */
+		mutex_enter(&os->os->os_user_ptr_lock);
+		if (zfsvfs = dmu_objset_get_user(os)) {
+			if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) {
+				mutex_exit(&os->os->os_user_ptr_lock);
+				dmu_objset_close(os);
+				zfsvfs = NULL;
+				error = EBUSY;
+				goto out;
+			}
+			VFS_HOLD(zfsvfs->z_vfs);
+		}
+		mutex_exit(&os->os->os_user_ptr_lock);
+
+		/*
+		 * If new properties are supplied, they are to completely
+		 * replace the existing ones, so stash away the existing ones.
+		 */
+		if (props)
+			(void) dsl_prop_get_all(os, &origprops, TRUE);
+
+		dmu_objset_close(os);
+	}
+
+	if (zc->zc_string[0]) {
+		error = dmu_objset_open(zc->zc_string, DMU_OST_ANY,
+		    DS_MODE_USER | DS_MODE_READONLY, &origin);
+		if (error)
+			goto out;
+	}
+
+	error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record,
+	    force, origin, zfsvfs != NULL, &drc);
+	if (origin)
+		dmu_objset_close(origin);
+	if (error)
+		goto out;
+
+	/*
+	 * Reset properties.  We do this before we receive the stream
+	 * so that the properties are applied to the new data.
+	 */
+	if (props) {
+		clear_props(tofs, origprops);
+		/*
+		 * XXX - Note, this is all-or-nothing; should be best-effort.
+		 */
+		(void) zfs_set_prop_nvlist(tofs, props);
+	}
+
+	off = fp->f_offset;
+	error = dmu_recv_stream(&drc, fp->f_vnode, &off);
+
+	if (error == 0 && zfsvfs) {
+		char *osname;
+		int mode;
+
+		/* online recv */
+		osname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
+		error = zfs_suspend_fs(zfsvfs, osname, &mode);
+		if (error == 0) {
+			int resume_err;
+
+			error = dmu_recv_end(&drc);
+			resume_err = zfs_resume_fs(zfsvfs, osname, mode);
+			error = error ? error : resume_err;
+		} else {
+			dmu_recv_abort_cleanup(&drc);
+		}
+		kmem_free(osname, MAXNAMELEN);
+	} else if (error == 0) {
+		error = dmu_recv_end(&drc);
+	}
+
+	zc->zc_cookie = off - fp->f_offset;
+	if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
+		fp->f_offset = off;
+
+	/*
+	 * On error, restore the original props.
+	 */
+	if (error && props) {
+		clear_props(tofs, props);
+		(void) zfs_set_prop_nvlist(tofs, origprops);
+	}
+out:
+	if (zfsvfs) {
+		mutex_exit(&zfsvfs->z_online_recv_lock);
+		VFS_RELE(zfsvfs->z_vfs);
+	}
+	nvlist_free(props);
+	nvlist_free(origprops);
+	releasef(fd);
+	return (error);
+}
+
+/*
+ * inputs:
+ * zc_name	name of snapshot to send
+ * zc_value	short name of incremental fromsnap (may be empty)
+ * zc_cookie	file descriptor to send stream to
+ * zc_obj	fromorigin flag (mutually exclusive with zc_value)
+ *
+ * outputs: none
+ */
+static int
+zfs_ioc_send(zfs_cmd_t *zc)
+{
+	objset_t *fromsnap = NULL;
+	objset_t *tosnap;
+	file_t *fp;
+	int error;
+	offset_t off;
+
+	error = dmu_objset_open(zc->zc_name, DMU_OST_ANY,
+	    DS_MODE_USER | DS_MODE_READONLY, &tosnap);
+	if (error)
+		return (error);
+
+	if (zc->zc_value[0] != '\0') {
+		char *buf;
+		char *cp;
+
+		buf = kmem_alloc(MAXPATHLEN, KM_SLEEP);
+		(void) strncpy(buf, zc->zc_name, MAXPATHLEN);
+		cp = strchr(buf, '@');
+		if (cp)
+			*(cp+1) = 0;
+		(void) strncat(buf, zc->zc_value, MAXPATHLEN);
+		error = dmu_objset_open(buf, DMU_OST_ANY,
+		    DS_MODE_USER | DS_MODE_READONLY, &fromsnap);
+		kmem_free(buf, MAXPATHLEN);
+		if (error) {
+			dmu_objset_close(tosnap);
+			return (error);
+		}
+	}
+
+	fp = getf(zc->zc_cookie);
+	if (fp == NULL) {
+		dmu_objset_close(tosnap);
+		if (fromsnap)
+			dmu_objset_close(fromsnap);
+		return (EBADF);
+	}
+
+	off = fp->f_offset;
+	error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off);
+
+	if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
+		fp->f_offset = off;
+	releasef(zc->zc_cookie);
+	if (fromsnap)
+		dmu_objset_close(fromsnap);
+	dmu_objset_close(tosnap);
+	return (error);
+}
+
+static int
+zfs_ioc_inject_fault(zfs_cmd_t *zc)
+{
+	int id, error;
+
+	error = zio_inject_fault(zc->zc_name, (int)zc->zc_guid, &id,
+	    &zc->zc_inject_record);
+
+	if (error == 0)
+		zc->zc_guid = (uint64_t)id;
+
+	return (error);
+}
+
+static int
+zfs_ioc_clear_fault(zfs_cmd_t *zc)
+{
+	return (zio_clear_fault((int)zc->zc_guid));
+}
+
+static int
+zfs_ioc_inject_list_next(zfs_cmd_t *zc)
+{
+	int id = (int)zc->zc_guid;
+	int error;
+
+	error = zio_inject_list_next(&id, zc->zc_name, sizeof (zc->zc_name),
+	    &zc->zc_inject_record);
+
+	zc->zc_guid = id;
+
+	return (error);
+}
+
+static int
+zfs_ioc_error_log(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	int error;
+	size_t count = (size_t)zc->zc_nvlist_dst_size;
+
+	if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+		return (error);
+
+	error = spa_get_errlog(spa, (void *)(uintptr_t)zc->zc_nvlist_dst,
+	    &count);
+	if (error == 0)
+		zc->zc_nvlist_dst_size = count;
+	else
+		zc->zc_nvlist_dst_size = spa_get_errlog_size(spa);
+
+	spa_close(spa, FTAG);
+
+	return (error);
+}
+
+static int
+zfs_ioc_clear(zfs_cmd_t *zc)
+{
+	spa_t *spa;
+	vdev_t *vd;
+	int error;
+
+	/*
+	 * On zpool clear we also fix up missing slogs
+	 */
+	mutex_enter(&spa_namespace_lock);
+	spa = spa_lookup(zc->zc_name);
+	if (spa == NULL) {
+		mutex_exit(&spa_namespace_lock);
+		return (EIO);
+	}
+	if (spa->spa_log_state == SPA_LOG_MISSING) {
+		/* we need to let spa_open/spa_load clear the chains */
+		spa->spa_log_state = SPA_LOG_CLEAR;
+	}
+	mutex_exit(&spa_namespace_lock);
+
+	if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+		return (error);
+
+	spa_vdev_state_enter(spa);
+
+	if (zc->zc_guid == 0) {
+		vd = NULL;
+	} else {
+		vd = spa_lookup_by_guid(spa, zc->zc_guid, B_TRUE);
+		if (vd == NULL) {
+			(void) spa_vdev_state_exit(spa, NULL, ENODEV);
+			spa_close(spa, FTAG);
+			return (ENODEV);
+		}
+	}
+
+	vdev_clear(spa, vd);
+
+	(void) spa_vdev_state_exit(spa, NULL, 0);
+
+	/*
+	 * Resume any suspended I/Os.
+	 */
+	zio_resume(spa);
+
+	spa_close(spa, FTAG);
+
+	return (0);
+}
+
+/*
+ * inputs:
+ * zc_name	name of filesystem
+ * zc_value	name of origin snapshot
+ *
+ * outputs:	none
+ */
+static int
+zfs_ioc_promote(zfs_cmd_t *zc)
+{
+	char *cp;
+
+	/*
+	 * We don't need to unmount *all* the origin fs's snapshots, but
+	 * it's easier.
+	 */
+	cp = strchr(zc->zc_value, '@');
+	if (cp)
+		*cp = '\0';
+	(void) dmu_objset_find(zc->zc_value,
+	    zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS);
+	return (dsl_dataset_promote(zc->zc_name));
+}
+
+/*
+ * We don't want to have a hard dependency
+ * against some special symbols in sharefs
+ * nfs, and smbsrv.  Determine them if needed when
+ * the first file system is shared.
+ * Neither sharefs, nfs or smbsrv are unloadable modules.
+ */
+int (*znfsexport_fs)(void *arg);
+int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t);
+int (*zsmbexport_fs)(void *arg, boolean_t add_share);
+
+int zfs_nfsshare_inited;
+int zfs_smbshare_inited;
+
+ddi_modhandle_t nfs_mod;
+ddi_modhandle_t sharefs_mod;
+ddi_modhandle_t smbsrv_mod;
+kmutex_t zfs_share_lock;
+
+static int
+zfs_init_sharefs()
+{
+	int error;
+
+	ASSERT(MUTEX_HELD(&zfs_share_lock));
+	/* Both NFS and SMB shares also require sharetab support. */
+	if (sharefs_mod == NULL && ((sharefs_mod =
+	    ddi_modopen("fs/sharefs",
+	    KRTLD_MODE_FIRST, &error)) == NULL)) {
+		return (ENOSYS);
+	}
+	if (zshare_fs == NULL && ((zshare_fs =
+	    (int (*)(enum sharefs_sys_op, share_t *, uint32_t))
+	    ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) {
+		return (ENOSYS);
+	}
+	return (0);
+}
+
+static int
+zfs_ioc_share(zfs_cmd_t *zc)
+{
+	int error;
+	int opcode;
+
+	switch (zc->zc_share.z_sharetype) {
+	case ZFS_SHARE_NFS:
+	case ZFS_UNSHARE_NFS:
+		if (zfs_nfsshare_inited == 0) {
+			mutex_enter(&zfs_share_lock);
+			if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs",
+			    KRTLD_MODE_FIRST, &error)) == NULL)) {
+				mutex_exit(&zfs_share_lock);
+				return (ENOSYS);
+			}
+			if (znfsexport_fs == NULL &&
+			    ((znfsexport_fs = (int (*)(void *))
+			    ddi_modsym(nfs_mod,
+			    "nfs_export", &error)) == NULL)) {
+				mutex_exit(&zfs_share_lock);
+				return (ENOSYS);
+			}
+			error = zfs_init_sharefs();
+			if (error) {
+				mutex_exit(&zfs_share_lock);
+				return (ENOSYS);
+			}
+			zfs_nfsshare_inited = 1;
+			mutex_exit(&zfs_share_lock);
+		}
+		break;
+	case ZFS_SHARE_SMB:
+	case ZFS_UNSHARE_SMB:
+		if (zfs_smbshare_inited == 0) {
+			mutex_enter(&zfs_share_lock);
+			if (smbsrv_mod == NULL && ((smbsrv_mod =
+			    ddi_modopen("drv/smbsrv",
+			    KRTLD_MODE_FIRST, &error)) == NULL)) {
+				mutex_exit(&zfs_share_lock);
+				return (ENOSYS);
+			}
+			if (zsmbexport_fs == NULL && ((zsmbexport_fs =
+			    (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod,
+			    "smb_server_share", &error)) == NULL)) {
+				mutex_exit(&zfs_share_lock);
+				return (ENOSYS);
+			}
+			error = zfs_init_sharefs();
+			if (error) {
+				mutex_exit(&zfs_share_lock);
+				return (ENOSYS);
+			}
+			zfs_smbshare_inited = 1;
+			mutex_exit(&zfs_share_lock);
+		}
+		break;
+	default:
+		return (EINVAL);
+	}
+
+	switch (zc->zc_share.z_sharetype) {
+	case ZFS_SHARE_NFS:
+	case ZFS_UNSHARE_NFS:
+		if (error =
+		    znfsexport_fs((void *)
+		    (uintptr_t)zc->zc_share.z_exportdata))
+			return (error);
+		break;
+	case ZFS_SHARE_SMB:
+	case ZFS_UNSHARE_SMB:
+		if (error = zsmbexport_fs((void *)
+		    (uintptr_t)zc->zc_share.z_exportdata,
+		    zc->zc_share.z_sharetype == ZFS_SHARE_SMB ?
+		    B_TRUE : B_FALSE)) {
+			return (error);
+		}
+		break;
+	}
+
+	opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS ||
+	    zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ?
+	    SHAREFS_ADD : SHAREFS_REMOVE;
+
+	/*
+	 * Add or remove share from sharetab
+	 */
+	error = zshare_fs(opcode,
+	    (void *)(uintptr_t)zc->zc_share.z_sharedata,
+	    zc->zc_share.z_sharemax);
+
+	return (error);
+
+}
+
+/*
+ * pool create, destroy, and export don't log the history as part of
+ * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export
+ * do the logging of those commands.
+ */
+static zfs_ioc_vec_t zfs_ioc_vec[] = {
+	{ zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE },
+	{ zfs_ioc_pool_destroy,	zfs_secpolicy_config, POOL_NAME, B_FALSE },
+	{ zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE },
+	{ zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE },
+	{ zfs_ioc_pool_configs,	zfs_secpolicy_none, NO_NAME, B_FALSE },
+	{ zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE },
+	{ zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE },
+	{ zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE },
+	{ zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE },
+	{ zfs_ioc_pool_upgrade,	zfs_secpolicy_config, POOL_NAME, B_TRUE },
+	{ zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE },
+	{ zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE },
+	{ zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE },
+	{ zfs_ioc_vdev_set_state, zfs_secpolicy_config,	POOL_NAME, B_TRUE },
+	{ zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE },
+	{ zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE },
+	{ zfs_ioc_vdev_setpath,	zfs_secpolicy_config, POOL_NAME, B_FALSE },
+	{ zfs_ioc_objset_stats,	zfs_secpolicy_read, DATASET_NAME, B_FALSE },
+	{ zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
+	{ zfs_ioc_dataset_list_next, zfs_secpolicy_read,
+	    DATASET_NAME, B_FALSE },
+	{ zfs_ioc_snapshot_list_next, zfs_secpolicy_read,
+	    DATASET_NAME, B_FALSE },
+	{ zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE },
+	{ zfs_ioc_create_minor,	zfs_secpolicy_minor, DATASET_NAME, B_FALSE },
+	{ zfs_ioc_remove_minor,	zfs_secpolicy_minor, DATASET_NAME, B_FALSE },
+	{ zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE },
+	{ zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE },
+	{ zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE },
+	{ zfs_ioc_rename, zfs_secpolicy_rename,	DATASET_NAME, B_TRUE },
+	{ zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE },
+	{ zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE },
+	{ zfs_ioc_inject_fault,	zfs_secpolicy_inject, NO_NAME, B_FALSE },
+	{ zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE },
+	{ zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE },
+	{ zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE },
+	{ zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE },
+	{ zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE },
+	{ zfs_ioc_destroy_snaps, zfs_secpolicy_destroy,	DATASET_NAME, B_TRUE },
+	{ zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE },
+	{ zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE },
+	{ zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE },
+	{ zfs_ioc_pool_set_props, zfs_secpolicy_config,	POOL_NAME, B_TRUE },
+	{ zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE },
+	{ zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE },
+	{ zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
+	{ zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi,
+	    DATASET_NAME, B_FALSE },
+	{ zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE },
+	{ zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE },
+};
+
+static int
+zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp)
+{
+	zfs_cmd_t *zc;
+	uint_t vec;
+	int error, rc;
+
+	if (getminor(dev) != 0)
+		return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp));
+
+	vec = cmd - ZFS_IOC;
+	ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip));
+
+	if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
+		return (EINVAL);
+
+	zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
+
+	error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t));
+
+	if (error == 0)
+		error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr);
+
+	/*
+	 * Ensure that all pool/dataset names are valid before we pass down to
+	 * the lower layers.
+	 */
+	if (error == 0) {
+		zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
+		switch (zfs_ioc_vec[vec].zvec_namecheck) {
+		case POOL_NAME:
+			if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
+				error = EINVAL;
+			break;
+
+		case DATASET_NAME:
+			if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
+				error = EINVAL;
+			break;
+
+		case NO_NAME:
+			break;
+		}
+	}
+
+	if (error == 0)
+		error = zfs_ioc_vec[vec].zvec_func(zc);
+
+	rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t));
+	if (error == 0) {
+		error = rc;
+		if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE)
+			zfs_log_history(zc);
+	}
+
+	kmem_free(zc, sizeof (zfs_cmd_t));
+	return (error);
+}
+
+static int
+zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
+{
+	if (cmd != DDI_ATTACH)
+		return (DDI_FAILURE);
+
+	if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0,
+	    DDI_PSEUDO, 0) == DDI_FAILURE)
+		return (DDI_FAILURE);
+
+	zfs_dip = dip;
+
+	ddi_report_dev(dip);
+
+	return (DDI_SUCCESS);
+}
+
+static int
+zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
+{
+	if (spa_busy() || zfs_busy() || zvol_busy())
+		return (DDI_FAILURE);
+
+	if (cmd != DDI_DETACH)
+		return (DDI_FAILURE);
+
+	zfs_dip = NULL;
+
+	ddi_prop_remove_all(dip);
+	ddi_remove_minor_node(dip, NULL);
+
+	return (DDI_SUCCESS);
+}
+
+/*ARGSUSED*/
+static int
+zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
+{
+	switch (infocmd) {
+	case DDI_INFO_DEVT2DEVINFO:
+		*result = zfs_dip;
+		return (DDI_SUCCESS);
+
+	case DDI_INFO_DEVT2INSTANCE:
+		*result = (void *)0;
+		return (DDI_SUCCESS);
+	}
+
+	return (DDI_FAILURE);
+}
+
+/*
+ * OK, so this is a little weird.
+ *
+ * /dev/zfs is the control node, i.e. minor 0.
+ * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0.
+ *
+ * /dev/zfs has basically nothing to do except serve up ioctls,
+ * so most of the standard driver entry points are in zvol.c.
+ */
+static struct cb_ops zfs_cb_ops = {
+	zvol_open,	/* open */
+	zvol_close,	/* close */
+	zvol_strategy,	/* strategy */
+	nodev,		/* print */
+	zvol_dump,	/* dump */
+	zvol_read,	/* read */
+	zvol_write,	/* write */
+	zfsdev_ioctl,	/* ioctl */
+	nodev,		/* devmap */
+	nodev,		/* mmap */
+	nodev,		/* segmap */
+	nochpoll,	/* poll */
+	ddi_prop_op,	/* prop_op */
+	NULL,		/* streamtab */
+	D_NEW | D_MP | D_64BIT,		/* Driver compatibility flag */
+	CB_REV,		/* version */
+	nodev,		/* async read */
+	nodev,		/* async write */
+};
+
+static struct dev_ops zfs_dev_ops = {
+	DEVO_REV,	/* version */
+	0,		/* refcnt */
+	zfs_info,	/* info */
+	nulldev,	/* identify */
+	nulldev,	/* probe */
+	zfs_attach,	/* attach */
+	zfs_detach,	/* detach */
+	nodev,		/* reset */
+	&zfs_cb_ops,	/* driver operations */
+	NULL,		/* no bus operations */
+	NULL,		/* power */
+	ddi_quiesce_not_needed,	/* quiesce */
+};
+
+static struct modldrv zfs_modldrv = {
+	&mod_driverops,
+	"ZFS storage pool",
+	&zfs_dev_ops
+};
+
+static struct modlinkage modlinkage = {
+	MODREV_1,
+	(void *)&zfs_modlfs,
+	(void *)&zfs_modldrv,
+	NULL
+};
+
+
+uint_t zfs_fsyncer_key;
+extern uint_t rrw_tsd_key;
+
+int
+_init(void)
+{
+	int error;
+
+	spa_init(FREAD | FWRITE);
+	zfs_init();
+	zvol_init();
+
+	if ((error = mod_install(&modlinkage)) != 0) {
+		zvol_fini();
+		zfs_fini();
+		spa_fini();
+		return (error);
+	}
+
+	tsd_create(&zfs_fsyncer_key, NULL);
+	tsd_create(&rrw_tsd_key, NULL);
+
+	error = ldi_ident_from_mod(&modlinkage, &zfs_li);
+	ASSERT(error == 0);
+	mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL);
+
+	return (0);
+}
+
+int
+_fini(void)
+{
+	int error;
+
+	if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled)
+		return (EBUSY);
+
+	if ((error = mod_remove(&modlinkage)) != 0)
+		return (error);
+
+	zvol_fini();
+	zfs_fini();
+	spa_fini();
+	if (zfs_nfsshare_inited)
+		(void) ddi_modclose(nfs_mod);
+	if (zfs_smbshare_inited)
+		(void) ddi_modclose(smbsrv_mod);
+	if (zfs_nfsshare_inited || zfs_smbshare_inited)
+		(void) ddi_modclose(sharefs_mod);
+
+	tsd_destroy(&zfs_fsyncer_key);
+	ldi_ident_release(zfs_li);
+	zfs_li = NULL;
+	mutex_destroy(&zfs_share_lock);
+
+	return (error);
+}
+
+int
+_info(struct modinfo *modinfop)
+{
+	return (mod_info(&modlinkage, modinfop));
+}