Remove files that have been repo copied to their new location

in cddl-specific parts of the source tree.

1 files changed, 0 insertions, 3253 deletions

diff --git a/contrib/opensolaris/cmd/zfs/zfs_main.c b/contrib/opensolaris/cmd/zfs/zfs_main.c
deleted file mode 100644
index de15b00..0000000
--- a/contrib/opensolaris/cmd/zfs/zfs_main.c
+++ /dev/null
@@ -1,3253 +0,0 @@
-/*
- * 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 2007 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
-#include <assert.h>
-#include <ctype.h>
-#include <errno.h>
-#include <libgen.h>
-#include <libintl.h>
-#include <libuutil.h>
-#include <locale.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <strings.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <zone.h>
-#include <sys/mntent.h>
-#include <sys/mnttab.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-
-#include <libzfs.h>
-
-#include "zfs_iter.h"
-#include "zfs_util.h"
-
-libzfs_handle_t *g_zfs;
-
-static FILE *mnttab_file;
-
-static int zfs_do_clone(int argc, char **argv);
-static int zfs_do_create(int argc, char **argv);
-static int zfs_do_destroy(int argc, char **argv);
-static int zfs_do_get(int argc, char **argv);
-static int zfs_do_inherit(int argc, char **argv);
-static int zfs_do_list(int argc, char **argv);
-static int zfs_do_mount(int argc, char **argv);
-static int zfs_do_rename(int argc, char **argv);
-static int zfs_do_rollback(int argc, char **argv);
-static int zfs_do_set(int argc, char **argv);
-static int zfs_do_snapshot(int argc, char **argv);
-static int zfs_do_unmount(int argc, char **argv);
-static int zfs_do_share(int argc, char **argv);
-static int zfs_do_unshare(int argc, char **argv);
-static int zfs_do_send(int argc, char **argv);
-static int zfs_do_receive(int argc, char **argv);
-static int zfs_do_promote(int argc, char **argv);
-static int zfs_do_jail(int argc, char **argv);
-static int zfs_do_unjail(int argc, char **argv);
-
-/*
- * These libumem hooks provide a reasonable set of defaults for the allocator's
- * debugging facilities.
- */
-const char *
-_umem_debug_init(void)
-{
-	return ("default,verbose"); /* $UMEM_DEBUG setting */
-}
-
-const char *
-_umem_logging_init(void)
-{
-	return ("fail,contents"); /* $UMEM_LOGGING setting */
-}
-
-typedef enum {
-	HELP_CLONE,
-	HELP_CREATE,
-	HELP_DESTROY,
-	HELP_GET,
-	HELP_INHERIT,
-	HELP_JAIL,
-	HELP_UNJAIL,
-	HELP_LIST,
-	HELP_MOUNT,
-	HELP_PROMOTE,
-	HELP_RECEIVE,
-	HELP_RENAME,
-	HELP_ROLLBACK,
-	HELP_SEND,
-	HELP_SET,
-	HELP_SHARE,
-	HELP_SNAPSHOT,
-	HELP_UNMOUNT,
-	HELP_UNSHARE
-} zfs_help_t;
-
-typedef struct zfs_command {
-	const char	*name;
-	int		(*func)(int argc, char **argv);
-	zfs_help_t	usage;
-} zfs_command_t;
-
-/*
- * Master command table.  Each ZFS command has a name, associated function, and
- * usage message.  The usage messages need to be internationalized, so we have
- * to have a function to return the usage message based on a command index.
- *
- * These commands are organized according to how they are displayed in the usage
- * message.  An empty command (one with a NULL name) indicates an empty line in
- * the generic usage message.
- */
-static zfs_command_t command_table[] = {
-	{ "create",	zfs_do_create,		HELP_CREATE		},
-	{ "destroy",	zfs_do_destroy,		HELP_DESTROY		},
-	{ NULL },
-	{ "snapshot",	zfs_do_snapshot,	HELP_SNAPSHOT		},
-	{ "rollback",	zfs_do_rollback,	HELP_ROLLBACK		},
-	{ "clone",	zfs_do_clone,		HELP_CLONE		},
-	{ "promote",	zfs_do_promote,		HELP_PROMOTE		},
-	{ "rename",	zfs_do_rename,		HELP_RENAME		},
-	{ NULL },
-	{ "list",	zfs_do_list,		HELP_LIST		},
-	{ NULL },
-	{ "set",	zfs_do_set,		HELP_SET		},
-	{ "get", 	zfs_do_get,		HELP_GET		},
-	{ "inherit",	zfs_do_inherit,		HELP_INHERIT		},
-	{ NULL },
-	{ "mount",	zfs_do_mount,		HELP_MOUNT		},
-	{ NULL },
-	{ "unmount",	zfs_do_unmount,		HELP_UNMOUNT		},
-	{ NULL },
-	{ "share",	zfs_do_share,		HELP_SHARE		},
-	{ NULL },
-	{ "unshare",	zfs_do_unshare,		HELP_UNSHARE		},
-	{ NULL },
-	{ "send",	zfs_do_send,		HELP_SEND		},
-	{ "receive",	zfs_do_receive,		HELP_RECEIVE		},
-	{ NULL },
-	{ "jail",	zfs_do_jail,		HELP_JAIL		},
-	{ "unjail",	zfs_do_unjail,		HELP_UNJAIL		},
-};
-
-#define	NCOMMAND	(sizeof (command_table) / sizeof (command_table[0]))
-
-zfs_command_t *current_command;
-
-static const char *
-get_usage(zfs_help_t idx)
-{
-	switch (idx) {
-	case HELP_CLONE:
-		return (gettext("\tclone <snapshot> <filesystem|volume>\n"));
-	case HELP_CREATE:
-		return (gettext("\tcreate [[-o property=value] ... ] "
-		    "<filesystem>\n"
-		    "\tcreate [-s] [-b blocksize] [[-o property=value] ...]\n"
-		    "\t    -V <size> <volume>\n"));
-	case HELP_DESTROY:
-		return (gettext("\tdestroy [-rRf] "
-		    "<filesystem|volume|snapshot>\n"));
-	case HELP_GET:
-		return (gettext("\tget [-rHp] [-o field[,field]...] "
-		    "[-s source[,source]...]\n"
-		    "\t    <all | property[,property]...> "
-		    "[filesystem|volume|snapshot] ...\n"));
-	case HELP_INHERIT:
-		return (gettext("\tinherit [-r] <property> "
-		    "<filesystem|volume> ...\n"));
-	case HELP_JAIL:
-		return (gettext("\tjail <jailid> <filesystem>\n"));
-	case HELP_UNJAIL:
-		return (gettext("\tunjail <jailid> <filesystem>\n"));
-	case HELP_LIST:
-		return (gettext("\tlist [-rH] [-o property[,property]...] "
-		    "[-t type[,type]...]\n"
-		    "\t    [-s property [-s property]...]"
-		    " [-S property [-S property]...]\n"
-		    "\t    [filesystem|volume|snapshot] ...\n"));
-	case HELP_MOUNT:
-		return (gettext("\tmount\n"
-		    "\tmount [-o opts] [-O] -a\n"
-		    "\tmount [-o opts] [-O] <filesystem>\n"));
-	case HELP_PROMOTE:
-		return (gettext("\tpromote <clone filesystem>\n"));
-	case HELP_RECEIVE:
-		return (gettext("\treceive [-vnF] <filesystem|volume|"
-		"snapshot>\n"
-		"\treceive [-vnF] -d <filesystem>\n"));
-	case HELP_RENAME:
-		return (gettext("\trename <filesystem|volume|snapshot> "
-		    "<filesystem|volume|snapshot>\n"
-		    "\trename -r <snapshot> <snapshot>"));
-	case HELP_ROLLBACK:
-		return (gettext("\trollback [-rRf] <snapshot>\n"));
-	case HELP_SEND:
-		return (gettext("\tsend [-i <snapshot>] <snapshot>\n"));
-	case HELP_SET:
-		return (gettext("\tset <property=value> "
-		    "<filesystem|volume> ...\n"));
-	case HELP_SHARE:
-		return (gettext("\tshare -a\n"
-		    "\tshare <filesystem>\n"));
-	case HELP_SNAPSHOT:
-		return (gettext("\tsnapshot [-r] "
-		    "<filesystem@name|volume@name>\n"));
-	case HELP_UNMOUNT:
-		return (gettext("\tunmount [-f] -a\n"
-		    "\tunmount [-f] <filesystem|mountpoint>\n"));
-	case HELP_UNSHARE:
-		return (gettext("\tunshare [-f] -a\n"
-		    "\tunshare [-f] <filesystem|mountpoint>\n"));
-	}
-
-	abort();
-	/* NOTREACHED */
-}
-
-/*
- * Utility function to guarantee malloc() success.
- */
-void *
-safe_malloc(size_t size)
-{
-	void *data;
-
-	if ((data = calloc(1, size)) == NULL) {
-		(void) fprintf(stderr, "internal error: out of memory\n");
-		exit(1);
-	}
-
-	return (data);
-}
-
-/*
- * Callback routinue that will print out information for each of the
- * the properties.
- */
-static zfs_prop_t
-usage_prop_cb(zfs_prop_t prop, void *cb)
-{
-	FILE *fp = cb;
-
-	(void) fprintf(fp, "\t%-13s  ", zfs_prop_to_name(prop));
-
-	if (zfs_prop_readonly(prop))
-		(void) fprintf(fp, "  NO    ");
-	else
-		(void) fprintf(fp, " YES    ");
-
-	if (zfs_prop_inheritable(prop))
-		(void) fprintf(fp, "  YES   ");
-	else
-		(void) fprintf(fp, "   NO   ");
-
-	if (zfs_prop_values(prop) == NULL)
-		(void) fprintf(fp, "-\n");
-	else
-		(void) fprintf(fp, "%s\n", zfs_prop_values(prop));
-
-	return (ZFS_PROP_CONT);
-}
-
-/*
- * Display usage message.  If we're inside a command, display only the usage for
- * that command.  Otherwise, iterate over the entire command table and display
- * a complete usage message.
- */
-static void
-usage(boolean_t requested)
-{
-	int i;
-	boolean_t show_properties = B_FALSE;
-	FILE *fp = requested ? stdout : stderr;
-
-	if (current_command == NULL) {
-
-		(void) fprintf(fp, gettext("usage: zfs command args ...\n"));
-		(void) fprintf(fp,
-		    gettext("where 'command' is one of the following:\n\n"));
-
-		for (i = 0; i < NCOMMAND; i++) {
-			if (command_table[i].name == NULL)
-				(void) fprintf(fp, "\n");
-			else
-				(void) fprintf(fp, "%s",
-				    get_usage(command_table[i].usage));
-		}
-
-		(void) fprintf(fp, gettext("\nEach dataset is of the form: "
-		    "pool/[dataset/]*dataset[@name]\n"));
-	} else {
-		(void) fprintf(fp, gettext("usage:\n"));
-		(void) fprintf(fp, "%s", get_usage(current_command->usage));
-	}
-
-	if (current_command != NULL &&
-	    (strcmp(current_command->name, "set") == 0 ||
-	    strcmp(current_command->name, "get") == 0 ||
-	    strcmp(current_command->name, "inherit") == 0 ||
-	    strcmp(current_command->name, "list") == 0))
-		show_properties = B_TRUE;
-
-	if (show_properties) {
-
-		(void) fprintf(fp,
-		    gettext("\nThe following properties are supported:\n"));
-
-		(void) fprintf(fp, "\n\t%-13s  %s  %s   %s\n\n",
-		    "PROPERTY", "EDIT", "INHERIT", "VALUES");
-
-		/* Iterate over all properties */
-		(void) zfs_prop_iter(usage_prop_cb, fp, B_FALSE);
-
-		(void) fprintf(fp, gettext("\nSizes are specified in bytes "
-		    "with standard units such as K, M, G, etc.\n"));
-		(void) fprintf(fp, gettext("\n\nUser-defined properties can "
-		    "be specified by using a name containing a colon (:).\n"));
-	} else {
-		/*
-		 * TRANSLATION NOTE:
-		 * "zfs set|get" must not be localised this is the
-		 * command name and arguments.
-		 */
-		(void) fprintf(fp,
-		    gettext("\nFor the property list, run: zfs set|get\n"));
-	}
-
-	/*
-	 * See comments at end of main().
-	 */
-	if (getenv("ZFS_ABORT") != NULL) {
-		(void) printf("dumping core by request\n");
-		abort();
-	}
-
-	exit(requested ? 0 : 2);
-}
-
-/*
- * zfs clone <fs, snap, vol> fs
- *
- * Given an existing dataset, create a writable copy whose initial contents
- * are the same as the source.  The newly created dataset maintains a
- * dependency on the original; the original cannot be destroyed so long as
- * the clone exists.
- */
-static int
-zfs_do_clone(int argc, char **argv)
-{
-	zfs_handle_t *zhp;
-	int ret;
-
-	/* check options */
-	if (argc > 1 && argv[1][0] == '-') {
-		(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-		    argv[1][1]);
-		usage(B_FALSE);
-	}
-
-	/* check number of arguments */
-	if (argc < 2) {
-		(void) fprintf(stderr, gettext("missing source dataset "
-		    "argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc < 3) {
-		(void) fprintf(stderr, gettext("missing target dataset "
-		    "argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc > 3) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		usage(B_FALSE);
-	}
-
-	/* open the source dataset */
-	if ((zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_SNAPSHOT)) == NULL)
-		return (1);
-
-	/* pass to libzfs */
-	ret = zfs_clone(zhp, argv[2], NULL);
-
-	/* create the mountpoint if necessary */
-	if (ret == 0) {
-		zfs_handle_t *clone = zfs_open(g_zfs, argv[2], ZFS_TYPE_ANY);
-		if (clone != NULL) {
-			if ((ret = zfs_mount(clone, NULL, 0)) == 0)
-				ret = zfs_share(clone);
-			zfs_close(clone);
-		}
-		zpool_log_history(g_zfs, argc, argv, argv[2], B_FALSE, B_FALSE);
-	}
-
-	zfs_close(zhp);
-
-	return (ret == 0 ? 0 : 1);
-}
-
-/*
- * zfs create [-o prop=value] ... fs
- * zfs create [-s] [-b blocksize] [-o prop=value] ... -V vol size
- *
- * Create a new dataset.  This command can be used to create filesystems
- * and volumes.  Snapshot creation is handled by 'zfs snapshot'.
- * For volumes, the user must specify a size to be used.
- *
- * The '-s' flag applies only to volumes, and indicates that we should not try
- * to set the reservation for this volume.  By default we set a reservation
- * equal to the size for any volume.
- */
-static int
-zfs_do_create(int argc, char **argv)
-{
-	zfs_type_t type = ZFS_TYPE_FILESYSTEM;
-	zfs_handle_t *zhp = NULL;
-	uint64_t volsize;
-	int c;
-	boolean_t noreserve = B_FALSE;
-	int ret = 1;
-	nvlist_t *props = NULL;
-	uint64_t intval;
-	char *propname;
-	char *propval = NULL;
-	char *strval;
-
-	if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0) {
-		(void) fprintf(stderr, gettext("internal error: "
-		    "out of memory\n"));
-		return (1);
-	}
-
-	/* check options */
-	while ((c = getopt(argc, argv, ":V:b:so:")) != -1) {
-		switch (c) {
-		case 'V':
-			type = ZFS_TYPE_VOLUME;
-			if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
-				(void) fprintf(stderr, gettext("bad volume "
-				    "size '%s': %s\n"), optarg,
-				    libzfs_error_description(g_zfs));
-				goto error;
-			}
-
-			if (nvlist_add_uint64(props,
-			    zfs_prop_to_name(ZFS_PROP_VOLSIZE),
-			    intval) != 0) {
-				(void) fprintf(stderr, gettext("internal "
-				    "error: out of memory\n"));
-				goto error;
-			}
-			volsize = intval;
-			break;
-		case 'b':
-			if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
-				(void) fprintf(stderr, gettext("bad volume "
-				    "block size '%s': %s\n"), optarg,
-				    libzfs_error_description(g_zfs));
-				goto error;
-			}
-
-			if (nvlist_add_uint64(props,
-			    zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
-			    intval) != 0) {
-				(void) fprintf(stderr, gettext("internal "
-				    "error: out of memory\n"));
-				goto error;
-			}
-			break;
-		case 'o':
-			propname = optarg;
-			if ((propval = strchr(propname, '=')) == NULL) {
-				(void) fprintf(stderr, gettext("missing "
-				    "'=' for -o option\n"));
-				goto error;
-			}
-			*propval = '\0';
-			propval++;
-			if (nvlist_lookup_string(props, propname,
-			    &strval) == 0) {
-				(void) fprintf(stderr, gettext("property '%s' "
-				    "specified multiple times\n"), propname);
-				goto error;
-			}
-			if (nvlist_add_string(props, propname, propval) != 0) {
-				(void) fprintf(stderr, gettext("internal "
-				    "error: out of memory\n"));
-				goto error;
-			}
-			break;
-		case 's':
-			noreserve = B_TRUE;
-			break;
-		case ':':
-			(void) fprintf(stderr, gettext("missing size "
-			    "argument\n"));
-			goto badusage;
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			goto badusage;
-		}
-	}
-
-	if (noreserve && type != ZFS_TYPE_VOLUME) {
-		(void) fprintf(stderr, gettext("'-s' can only be used when "
-		    "creating a volume\n"));
-		goto badusage;
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check number of arguments */
-	if (argc == 0) {
-		(void) fprintf(stderr, gettext("missing %s argument\n"),
-		    zfs_type_to_name(type));
-		goto badusage;
-	}
-	if (argc > 1) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		goto badusage;
-	}
-
-	if (type == ZFS_TYPE_VOLUME && !noreserve &&
-	    nvlist_lookup_string(props, zfs_prop_to_name(ZFS_PROP_RESERVATION),
-	    &strval) != 0) {
-		if (nvlist_add_uint64(props,
-		    zfs_prop_to_name(ZFS_PROP_RESERVATION),
-		    volsize) != 0) {
-			(void) fprintf(stderr, gettext("internal "
-			    "error: out of memory\n"));
-			nvlist_free(props);
-			return (1);
-		}
-	}
-
-	/* pass to libzfs */
-	if (zfs_create(g_zfs, argv[0], type, props) != 0)
-		goto error;
-
-	if (propval != NULL)
-		*(propval - 1) = '=';
-	zpool_log_history(g_zfs, argc + optind, argv - optind, argv[0],
-	    B_FALSE, B_FALSE);
-
-	if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_ANY)) == NULL)
-		goto error;
-
-	/*
-	 * Mount and/or share the new filesystem as appropriate.  We provide a
-	 * verbose error message to let the user know that their filesystem was
-	 * in fact created, even if we failed to mount or share it.
-	 */
-	if (zfs_mount(zhp, NULL, 0) != 0) {
-		(void) fprintf(stderr, gettext("filesystem successfully "
-		    "created, but not mounted\n"));
-		ret = 1;
-	} else if (zfs_share(zhp) != 0) {
-		(void) fprintf(stderr, gettext("filesystem successfully "
-		    "created, but not shared\n"));
-		ret = 1;
-	} else {
-		ret = 0;
-	}
-
-error:
-	if (zhp)
-		zfs_close(zhp);
-	nvlist_free(props);
-	return (ret);
-badusage:
-	nvlist_free(props);
-	usage(B_FALSE);
-	return (2);
-}
-
-/*
- * zfs destroy [-rf] <fs, snap, vol>
- *
- * 	-r	Recursively destroy all children
- * 	-R	Recursively destroy all dependents, including clones
- * 	-f	Force unmounting of any dependents
- *
- * Destroys the given dataset.  By default, it will unmount any filesystems,
- * and refuse to destroy a dataset that has any dependents.  A dependent can
- * either be a child, or a clone of a child.
- */
-typedef struct destroy_cbdata {
-	boolean_t	cb_first;
-	int		cb_force;
-	int		cb_recurse;
-	int		cb_error;
-	int		cb_needforce;
-	int		cb_doclones;
-	boolean_t	cb_closezhp;
-	zfs_handle_t	*cb_target;
-	char		*cb_snapname;
-} destroy_cbdata_t;
-
-/*
- * Check for any dependents based on the '-r' or '-R' flags.
- */
-static int
-destroy_check_dependent(zfs_handle_t *zhp, void *data)
-{
-	destroy_cbdata_t *cbp = data;
-	const char *tname = zfs_get_name(cbp->cb_target);
-	const char *name = zfs_get_name(zhp);
-
-	if (strncmp(tname, name, strlen(tname)) == 0 &&
-	    (name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
-		/*
-		 * This is a direct descendant, not a clone somewhere else in
-		 * the hierarchy.
-		 */
-		if (cbp->cb_recurse)
-			goto out;
-
-		if (cbp->cb_first) {
-			(void) fprintf(stderr, gettext("cannot destroy '%s': "
-			    "%s has children\n"),
-			    zfs_get_name(cbp->cb_target),
-			    zfs_type_to_name(zfs_get_type(cbp->cb_target)));
-			(void) fprintf(stderr, gettext("use '-r' to destroy "
-			    "the following datasets:\n"));
-			cbp->cb_first = B_FALSE;
-			cbp->cb_error = 1;
-		}
-
-		(void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
-	} else {
-		/*
-		 * This is a clone.  We only want to report this if the '-r'
-		 * wasn't specified, or the target is a snapshot.
-		 */
-		if (!cbp->cb_recurse &&
-		    zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
-			goto out;
-
-		if (cbp->cb_first) {
-			(void) fprintf(stderr, gettext("cannot destroy '%s': "
-			    "%s has dependent clones\n"),
-			    zfs_get_name(cbp->cb_target),
-			    zfs_type_to_name(zfs_get_type(cbp->cb_target)));
-			(void) fprintf(stderr, gettext("use '-R' to destroy "
-			    "the following datasets:\n"));
-			cbp->cb_first = B_FALSE;
-			cbp->cb_error = 1;
-		}
-
-		(void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
-	}
-
-out:
-	zfs_close(zhp);
-	return (0);
-}
-
-static int
-destroy_callback(zfs_handle_t *zhp, void *data)
-{
-	destroy_cbdata_t *cbp = data;
-
-	/*
-	 * Ignore pools (which we've already flagged as an error before getting
-	 * here.
-	 */
-	if (strchr(zfs_get_name(zhp), '/') == NULL &&
-	    zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
-		zfs_close(zhp);
-		return (0);
-	}
-
-	/*
-	 * Bail out on the first error.
-	 */
-	if (zfs_unmount(zhp, NULL, cbp->cb_force ? MS_FORCE : 0) != 0 ||
-	    zfs_destroy(zhp) != 0) {
-		zfs_close(zhp);
-		return (-1);
-	}
-
-	zfs_close(zhp);
-	return (0);
-}
-
-static int
-destroy_snap_clones(zfs_handle_t *zhp, void *arg)
-{
-	destroy_cbdata_t *cbp = arg;
-	char thissnap[MAXPATHLEN];
-	zfs_handle_t *szhp;
-	boolean_t closezhp = cbp->cb_closezhp;
-	int rv;
-
-	(void) snprintf(thissnap, sizeof (thissnap),
-	    "%s@%s", zfs_get_name(zhp), cbp->cb_snapname);
-
-	libzfs_print_on_error(g_zfs, B_FALSE);
-	szhp = zfs_open(g_zfs, thissnap, ZFS_TYPE_SNAPSHOT);
-	libzfs_print_on_error(g_zfs, B_TRUE);
-	if (szhp) {
-		/*
-		 * Destroy any clones of this snapshot
-		 */
-		if (zfs_iter_dependents(szhp, B_FALSE, destroy_callback,
-		    cbp) != 0) {
-			zfs_close(szhp);
-			if (closezhp)
-				zfs_close(zhp);
-			return (-1);
-		}
-		zfs_close(szhp);
-	}
-
-	cbp->cb_closezhp = B_TRUE;
-	rv = zfs_iter_filesystems(zhp, destroy_snap_clones, arg);
-	if (closezhp)
-		zfs_close(zhp);
-	return (rv);
-}
-
-static int
-zfs_do_destroy(int argc, char **argv)
-{
-	destroy_cbdata_t cb = { 0 };
-	int c;
-	zfs_handle_t *zhp;
-	char *cp;
-
-	/* check options */
-	while ((c = getopt(argc, argv, "frR")) != -1) {
-		switch (c) {
-		case 'f':
-			cb.cb_force = 1;
-			break;
-		case 'r':
-			cb.cb_recurse = 1;
-			break;
-		case 'R':
-			cb.cb_recurse = 1;
-			cb.cb_doclones = 1;
-			break;
-		case '?':
-		default:
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check number of arguments */
-	if (argc == 0) {
-		(void) fprintf(stderr, gettext("missing path argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc > 1) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		usage(B_FALSE);
-	}
-
-	/*
-	 * If we are doing recursive destroy of a snapshot, then the
-	 * named snapshot may not exist.  Go straight to libzfs.
-	 */
-	if (cb.cb_recurse && (cp = strchr(argv[0], '@'))) {
-		int ret;
-
-		*cp = '\0';
-		if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_ANY)) == NULL)
-			return (1);
-		*cp = '@';
-		cp++;
-
-		if (cb.cb_doclones) {
-			cb.cb_snapname = cp;
-			if (destroy_snap_clones(zhp, &cb) != 0) {
-				zfs_close(zhp);
-				return (1);
-			}
-		}
-
-		ret = zfs_destroy_snaps(zhp, cp);
-		zfs_close(zhp);
-		if (ret) {
-			(void) fprintf(stderr,
-			    gettext("no snapshots destroyed\n"));
-		} else {
-			zpool_log_history(g_zfs, argc + optind, argv - optind,
-			    argv[0], B_FALSE, B_FALSE);
-		}
-		return (ret != 0);
-	}
-
-
-	/* Open the given dataset */
-	if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_ANY)) == NULL)
-		return (1);
-
-	cb.cb_target = zhp;
-
-	/*
-	 * Perform an explicit check for pools before going any further.
-	 */
-	if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
-	    zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
-		(void) fprintf(stderr, gettext("cannot destroy '%s': "
-		    "operation does not apply to pools\n"),
-		    zfs_get_name(zhp));
-		(void) fprintf(stderr, gettext("use 'zfs destroy -r "
-		    "%s' to destroy all datasets in the pool\n"),
-		    zfs_get_name(zhp));
-		(void) fprintf(stderr, gettext("use 'zpool destroy %s' "
-		    "to destroy the pool itself\n"), zfs_get_name(zhp));
-		zfs_close(zhp);
-		return (1);
-	}
-
-	/*
-	 * Check for any dependents and/or clones.
-	 */
-	cb.cb_first = B_TRUE;
-	if (!cb.cb_doclones &&
-	    zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
-	    &cb) != 0) {
-		zfs_close(zhp);
-		return (1);
-	}
-
-
-	if (cb.cb_error ||
-	    zfs_iter_dependents(zhp, B_FALSE, destroy_callback, &cb) != 0) {
-		zfs_close(zhp);
-		return (1);
-	}
-
-	/*
-	 * Do the real thing.  The callback will close the handle regardless of
-	 * whether it succeeds or not.
-	 */
-	if (destroy_callback(zhp, &cb) != 0)
-		return (1);
-
-	zpool_log_history(g_zfs, argc + optind, argv - optind, argv[0],
-	    B_FALSE, B_FALSE);
-
-	return (0);
-}
-
-/*
- * zfs get [-rHp] [-o field[,field]...] [-s source[,source]...]
- * 	< all | property[,property]... > < fs | snap | vol > ...
- *
- *	-r	recurse over any child datasets
- *	-H	scripted mode.  Headers are stripped, and fields are separated
- *		by tabs instead of spaces.
- *	-o	Set of fields to display.  One of "name,property,value,source".
- *		Default is all four.
- *	-s	Set of sources to allow.  One of
- *		"local,default,inherited,temporary,none".  Default is all
- *		five.
- *	-p	Display values in parsable (literal) format.
- *
- *  Prints properties for the given datasets.  The user can control which
- *  columns to display as well as which property types to allow.
- */
-
-/*
- * Invoked to display the properties for a single dataset.
- */
-static int
-get_callback(zfs_handle_t *zhp, void *data)
-{
-	char buf[ZFS_MAXPROPLEN];
-	zfs_source_t sourcetype;
-	char source[ZFS_MAXNAMELEN];
-	libzfs_get_cbdata_t *cbp = data;
-	nvlist_t *userprop = zfs_get_user_props(zhp);
-	zfs_proplist_t *pl = cbp->cb_proplist;
-	nvlist_t *propval;
-	char *strval;
-	char *sourceval;
-
-	for (; pl != NULL; pl = pl->pl_next) {
-		/*
-		 * Skip the special fake placeholder.  This will also skip over
-		 * the name property when 'all' is specified.
-		 */
-		if (pl->pl_prop == ZFS_PROP_NAME &&
-		    pl == cbp->cb_proplist)
-			continue;
-
-		if (pl->pl_prop != ZFS_PROP_INVAL) {
-			if (zfs_prop_get(zhp, pl->pl_prop, buf,
-			    sizeof (buf), &sourcetype, source,
-			    sizeof (source),
-			    cbp->cb_literal) != 0) {
-				if (pl->pl_all)
-					continue;
-				if (!zfs_prop_valid_for_type(pl->pl_prop,
-				    ZFS_TYPE_ANY)) {
-					(void) fprintf(stderr,
-					    gettext("No such property '%s'\n"),
-					    zfs_prop_to_name(pl->pl_prop));
-					continue;
-				}
-				sourcetype = ZFS_SRC_NONE;
-				(void) strlcpy(buf, "-", sizeof (buf));
-			}
-
-			libzfs_print_one_property(zfs_get_name(zhp), cbp,
-			    zfs_prop_to_name(pl->pl_prop),
-			    buf, sourcetype, source);
-		} else {
-			if (nvlist_lookup_nvlist(userprop,
-			    pl->pl_user_prop, &propval) != 0) {
-				if (pl->pl_all)
-					continue;
-				sourcetype = ZFS_SRC_NONE;
-				strval = "-";
-			} else {
-				verify(nvlist_lookup_string(propval,
-				    ZFS_PROP_VALUE, &strval) == 0);
-				verify(nvlist_lookup_string(propval,
-				    ZFS_PROP_SOURCE, &sourceval) == 0);
-
-				if (strcmp(sourceval,
-				    zfs_get_name(zhp)) == 0) {
-					sourcetype = ZFS_SRC_LOCAL;
-				} else {
-					sourcetype = ZFS_SRC_INHERITED;
-					(void) strlcpy(source,
-					    sourceval, sizeof (source));
-				}
-			}
-
-			libzfs_print_one_property(zfs_get_name(zhp), cbp,
-			    pl->pl_user_prop, strval, sourcetype,
-			    source);
-		}
-	}
-
-	return (0);
-}
-
-static int
-zfs_do_get(int argc, char **argv)
-{
-	libzfs_get_cbdata_t cb = { 0 };
-	boolean_t recurse = B_FALSE;
-	int i, c;
-	char *value, *fields;
-	int ret;
-	zfs_proplist_t fake_name = { 0 };
-
-	/*
-	 * Set up default columns and sources.
-	 */
-	cb.cb_sources = ZFS_SRC_ALL;
-	cb.cb_columns[0] = GET_COL_NAME;
-	cb.cb_columns[1] = GET_COL_PROPERTY;
-	cb.cb_columns[2] = GET_COL_VALUE;
-	cb.cb_columns[3] = GET_COL_SOURCE;
-
-	/* check options */
-	while ((c = getopt(argc, argv, ":o:s:rHp")) != -1) {
-		switch (c) {
-		case 'p':
-			cb.cb_literal = B_TRUE;
-			break;
-		case 'r':
-			recurse = B_TRUE;
-			break;
-		case 'H':
-			cb.cb_scripted = B_TRUE;
-			break;
-		case ':':
-			(void) fprintf(stderr, gettext("missing argument for "
-			    "'%c' option\n"), optopt);
-			usage(B_FALSE);
-			break;
-		case 'o':
-			/*
-			 * Process the set of columns to display.  We zero out
-			 * the structure to give us a blank slate.
-			 */
-			bzero(&cb.cb_columns, sizeof (cb.cb_columns));
-			i = 0;
-			while (*optarg != '\0') {
-				static char *col_subopts[] =
-				    { "name", "property", "value", "source",
-				    NULL };
-
-				if (i == 4) {
-					(void) fprintf(stderr, gettext("too "
-					    "many fields given to -o "
-					    "option\n"));
-					usage(B_FALSE);
-				}
-
-				switch (getsubopt(&optarg, col_subopts,
-				    &value)) {
-				case 0:
-					cb.cb_columns[i++] = GET_COL_NAME;
-					break;
-				case 1:
-					cb.cb_columns[i++] = GET_COL_PROPERTY;
-					break;
-				case 2:
-					cb.cb_columns[i++] = GET_COL_VALUE;
-					break;
-				case 3:
-					cb.cb_columns[i++] = GET_COL_SOURCE;
-					break;
-				default:
-					(void) fprintf(stderr,
-					    gettext("invalid column name "
-					    "'%s'\n"), value);
-					usage(B_FALSE);
-				}
-			}
-			break;
-
-		case 's':
-			cb.cb_sources = 0;
-			while (*optarg != '\0') {
-				static char *source_subopts[] = {
-					"local", "default", "inherited",
-					"temporary", "none", NULL };
-
-				switch (getsubopt(&optarg, source_subopts,
-				    &value)) {
-				case 0:
-					cb.cb_sources |= ZFS_SRC_LOCAL;
-					break;
-				case 1:
-					cb.cb_sources |= ZFS_SRC_DEFAULT;
-					break;
-				case 2:
-					cb.cb_sources |= ZFS_SRC_INHERITED;
-					break;
-				case 3:
-					cb.cb_sources |= ZFS_SRC_TEMPORARY;
-					break;
-				case 4:
-					cb.cb_sources |= ZFS_SRC_NONE;
-					break;
-				default:
-					(void) fprintf(stderr,
-					    gettext("invalid source "
-					    "'%s'\n"), value);
-					usage(B_FALSE);
-				}
-			}
-			break;
-
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	if (argc < 1) {
-		(void) fprintf(stderr, gettext("missing property "
-		    "argument\n"));
-		usage(B_FALSE);
-	}
-
-	fields = argv[0];
-
-	if (zfs_get_proplist(g_zfs, fields, &cb.cb_proplist) != 0)
-		usage(B_FALSE);
-
-	argc--;
-	argv++;
-
-	/*
-	 * As part of zfs_expand_proplist(), we keep track of the maximum column
-	 * width for each property.  For the 'NAME' (and 'SOURCE') columns, we
-	 * need to know the maximum name length.  However, the user likely did
-	 * not specify 'name' as one of the properties to fetch, so we need to
-	 * make sure we always include at least this property for
-	 * print_get_headers() to work properly.
-	 */
-	if (cb.cb_proplist != NULL) {
-		fake_name.pl_prop = ZFS_PROP_NAME;
-		fake_name.pl_width = strlen(gettext("NAME"));
-		fake_name.pl_next = cb.cb_proplist;
-		cb.cb_proplist = &fake_name;
-	}
-
-	cb.cb_first = B_TRUE;
-
-	/* run for each object */
-	ret = zfs_for_each(argc, argv, recurse, ZFS_TYPE_ANY, NULL,
-	    &cb.cb_proplist, get_callback, &cb, B_FALSE);
-
-	if (cb.cb_proplist == &fake_name)
-		zfs_free_proplist(fake_name.pl_next);
-	else
-		zfs_free_proplist(cb.cb_proplist);
-
-	return (ret);
-}
-
-/*
- * inherit [-r] <property> <fs|vol> ...
- *
- * 	-r	Recurse over all children
- *
- * For each dataset specified on the command line, inherit the given property
- * from its parent.  Inheriting a property at the pool level will cause it to
- * use the default value.  The '-r' flag will recurse over all children, and is
- * useful for setting a property on a hierarchy-wide basis, regardless of any
- * local modifications for each dataset.
- */
-typedef struct inherit_cbdata {
-	char		*cb_propname;
-	boolean_t	cb_any_successful;
-} inherit_cbdata_t;
-
-static int
-inherit_callback(zfs_handle_t *zhp, void *data)
-{
-	inherit_cbdata_t *cbp = data;
-	int ret;
-
-	ret = zfs_prop_inherit(zhp, cbp->cb_propname);
-	if (ret == 0)
-		cbp->cb_any_successful = B_TRUE;
-	return (ret != 0);
-}
-
-static int
-zfs_do_inherit(int argc, char **argv)
-{
-	boolean_t recurse = B_FALSE;
-	int c;
-	zfs_prop_t prop;
-	inherit_cbdata_t cb;
-	int ret;
-
-	/* check options */
-	while ((c = getopt(argc, argv, "r")) != -1) {
-		switch (c) {
-		case 'r':
-			recurse = B_TRUE;
-			break;
-		case '?':
-		default:
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check number of arguments */
-	if (argc < 1) {
-		(void) fprintf(stderr, gettext("missing property argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc < 2) {
-		(void) fprintf(stderr, gettext("missing dataset argument\n"));
-		usage(B_FALSE);
-	}
-
-	cb.cb_propname = argv[0];
-	argc--;
-	argv++;
-
-	if ((prop = zfs_name_to_prop(cb.cb_propname)) != ZFS_PROP_INVAL) {
-		if (zfs_prop_readonly(prop)) {
-			(void) fprintf(stderr, gettext(
-			    "%s property is read-only\n"),
-			    cb.cb_propname);
-			return (1);
-		}
-		if (!zfs_prop_inheritable(prop)) {
-			(void) fprintf(stderr, gettext("'%s' property cannot "
-			    "be inherited\n"), cb.cb_propname);
-			if (prop == ZFS_PROP_QUOTA ||
-			    prop == ZFS_PROP_RESERVATION)
-				(void) fprintf(stderr, gettext("use 'zfs set "
-				    "%s=none' to clear\n"), cb.cb_propname);
-			return (1);
-		}
-	} else if (!zfs_prop_user(cb.cb_propname)) {
-		(void) fprintf(stderr, gettext(
-		    "invalid property '%s'\n"),
-		    cb.cb_propname);
-		usage(B_FALSE);
-	}
-
-	cb.cb_any_successful = B_FALSE;
-
-	ret = zfs_for_each(argc, argv, recurse,
-	    ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, NULL, NULL,
-	    inherit_callback, &cb, B_FALSE);
-
-	if (cb.cb_any_successful) {
-		zpool_log_history(g_zfs, argc + optind + 1, argv - optind - 1,
-		    argv[0], B_FALSE, B_FALSE);
-	}
-
-	return (ret);
-}
-
-/*
- * list [-rH] [-o property[,property]...] [-t type[,type]...]
- *      [-s property [-s property]...] [-S property [-S property]...]
- *      <dataset> ...
- *
- * 	-r	Recurse over all children
- * 	-H	Scripted mode; elide headers and separate colums by tabs
- * 	-o	Control which fields to display.
- * 	-t	Control which object types to display.
- *	-s	Specify sort columns, descending order.
- *	-S	Specify sort columns, ascending order.
- *
- * When given no arguments, lists all filesystems in the system.
- * Otherwise, list the specified datasets, optionally recursing down them if
- * '-r' is specified.
- */
-typedef struct list_cbdata {
-	boolean_t	cb_first;
-	boolean_t	cb_scripted;
-	zfs_proplist_t	*cb_proplist;
-} list_cbdata_t;
-
-/*
- * Given a list of columns to display, output appropriate headers for each one.
- */
-static void
-print_header(zfs_proplist_t *pl)
-{
-	char headerbuf[ZFS_MAXPROPLEN];
-	const char *header;
-	int i;
-	boolean_t first = B_TRUE;
-	boolean_t right_justify;
-
-	for (; pl != NULL; pl = pl->pl_next) {
-		if (!first) {
-			(void) printf("  ");
-		} else {
-			first = B_FALSE;
-		}
-
-		right_justify = B_FALSE;
-		if (pl->pl_prop != ZFS_PROP_INVAL) {
-			header = zfs_prop_column_name(pl->pl_prop);
-			right_justify = zfs_prop_align_right(pl->pl_prop);
-		} else {
-			for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
-				headerbuf[i] = toupper(pl->pl_user_prop[i]);
-			headerbuf[i] = '\0';
-			header = headerbuf;
-		}
-
-		if (pl->pl_next == NULL && !right_justify)
-			(void) printf("%s", header);
-		else if (right_justify)
-			(void) printf("%*s", pl->pl_width, header);
-		else
-			(void) printf("%-*s", pl->pl_width, header);
-	}
-
-	(void) printf("\n");
-}
-
-/*
- * Given a dataset and a list of fields, print out all the properties according
- * to the described layout.
- */
-static void
-print_dataset(zfs_handle_t *zhp, zfs_proplist_t *pl, int scripted)
-{
-	boolean_t first = B_TRUE;
-	char property[ZFS_MAXPROPLEN];
-	nvlist_t *userprops = zfs_get_user_props(zhp);
-	nvlist_t *propval;
-	char *propstr;
-	boolean_t right_justify;
-	int width;
-
-	for (; pl != NULL; pl = pl->pl_next) {
-		if (!first) {
-			if (scripted)
-				(void) printf("\t");
-			else
-				(void) printf("  ");
-		} else {
-			first = B_FALSE;
-		}
-
-		right_justify = B_FALSE;
-		if (pl->pl_prop != ZFS_PROP_INVAL) {
-			if (zfs_prop_get(zhp, pl->pl_prop, property,
-			    sizeof (property), NULL, NULL, 0, B_FALSE) != 0)
-				propstr = "-";
-			else
-				propstr = property;
-
-			right_justify = zfs_prop_align_right(pl->pl_prop);
-		} else {
-			if (nvlist_lookup_nvlist(userprops,
-			    pl->pl_user_prop, &propval) != 0)
-				propstr = "-";
-			else
-				verify(nvlist_lookup_string(propval,
-				    ZFS_PROP_VALUE, &propstr) == 0);
-		}
-
-		width = pl->pl_width;
-
-		/*
-		 * If this is being called in scripted mode, or if this is the
-		 * last column and it is left-justified, don't include a width
-		 * format specifier.
-		 */
-		if (scripted || (pl->pl_next == NULL && !right_justify))
-			(void) printf("%s", propstr);
-		else if (right_justify)
-			(void) printf("%*s", width, propstr);
-		else
-			(void) printf("%-*s", width, propstr);
-	}
-
-	(void) printf("\n");
-}
-
-/*
- * Generic callback function to list a dataset or snapshot.
- */
-static int
-list_callback(zfs_handle_t *zhp, void *data)
-{
-	list_cbdata_t *cbp = data;
-
-	if (cbp->cb_first) {
-		if (!cbp->cb_scripted)
-			print_header(cbp->cb_proplist);
-		cbp->cb_first = B_FALSE;
-	}
-
-	print_dataset(zhp, cbp->cb_proplist, cbp->cb_scripted);
-
-	return (0);
-}
-
-static int
-zfs_do_list(int argc, char **argv)
-{
-	int c;
-	boolean_t recurse = B_FALSE;
-	boolean_t scripted = B_FALSE;
-	static char default_fields[] =
-	    "name,used,available,referenced,mountpoint";
-	int types = ZFS_TYPE_ANY;
-	char *fields = NULL;
-	char *basic_fields = default_fields;
-	list_cbdata_t cb = { 0 };
-	char *value;
-	int ret;
-	char *type_subopts[] = { "filesystem", "volume", "snapshot", NULL };
-	zfs_sort_column_t *sortcol = NULL;
-
-	/* check options */
-	while ((c = getopt(argc, argv, ":o:rt:Hs:S:")) != -1) {
-		switch (c) {
-		case 'o':
-			fields = optarg;
-			break;
-		case 'r':
-			recurse = B_TRUE;
-			break;
-		case 'H':
-			scripted = B_TRUE;
-			break;
-		case 's':
-			if (zfs_add_sort_column(&sortcol, optarg,
-			    B_FALSE) != 0) {
-				(void) fprintf(stderr,
-				    gettext("invalid property '%s'\n"), optarg);
-				usage(B_FALSE);
-			}
-			break;
-		case 'S':
-			if (zfs_add_sort_column(&sortcol, optarg,
-			    B_TRUE) != 0) {
-				(void) fprintf(stderr,
-				    gettext("invalid property '%s'\n"), optarg);
-				usage(B_FALSE);
-			}
-			break;
-		case 't':
-			types = 0;
-			while (*optarg != '\0') {
-				switch (getsubopt(&optarg, type_subopts,
-				    &value)) {
-				case 0:
-					types |= ZFS_TYPE_FILESYSTEM;
-					break;
-				case 1:
-					types |= ZFS_TYPE_VOLUME;
-					break;
-				case 2:
-					types |= ZFS_TYPE_SNAPSHOT;
-					break;
-				default:
-					(void) fprintf(stderr,
-					    gettext("invalid type '%s'\n"),
-					    value);
-					usage(B_FALSE);
-				}
-			}
-			break;
-		case ':':
-			(void) fprintf(stderr, gettext("missing argument for "
-			    "'%c' option\n"), optopt);
-			usage(B_FALSE);
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	if (fields == NULL)
-		fields = basic_fields;
-
-	/*
-	 * If the user specifies '-o all', the zfs_get_proplist() doesn't
-	 * normally include the name of the dataset.  For 'zfs list', we always
-	 * want this property to be first.
-	 */
-	if (zfs_get_proplist(g_zfs, fields, &cb.cb_proplist) != 0)
-		usage(B_FALSE);
-
-	cb.cb_scripted = scripted;
-	cb.cb_first = B_TRUE;
-
-	ret = zfs_for_each(argc, argv, recurse, types, sortcol, &cb.cb_proplist,
-	    list_callback, &cb, B_TRUE);
-
-	zfs_free_proplist(cb.cb_proplist);
-	zfs_free_sort_columns(sortcol);
-
-	if (ret == 0 && cb.cb_first)
-		(void) printf(gettext("no datasets available\n"));
-
-	return (ret);
-}
-
-/*
- * zfs rename [-r] <fs | snap | vol> <fs | snap | vol>
- *
- * Renames the given dataset to another of the same type.
- */
-/* ARGSUSED */
-static int
-zfs_do_rename(int argc, char **argv)
-{
-	zfs_handle_t *zhp;
-	int c;
-	int ret;
-	int recurse = 0;
-
-	/* check options */
-	while ((c = getopt(argc, argv, "r")) != -1) {
-		switch (c) {
-		case 'r':
-			recurse = 1;
-			break;
-		case '?':
-		default:
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check number of arguments */
-	if (argc < 1) {
-		(void) fprintf(stderr, gettext("missing source dataset "
-		    "argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc < 2) {
-		(void) fprintf(stderr, gettext("missing target dataset "
-		    "argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc > 2) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		usage(B_FALSE);
-	}
-
-	if (recurse && strchr(argv[0], '@') == 0) {
-		(void) fprintf(stderr, gettext("source dataset for recursive "
-		    "rename must be a snapshot\n"));
-		usage(B_FALSE);
-	}
-
-	if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_ANY)) == NULL)
-		return (1);
-
-	ret = (zfs_rename(zhp, argv[1], recurse) != 0);
-
-	if (!ret)
-		zpool_log_history(g_zfs, argc + optind, argv - optind, argv[1],
-		    B_FALSE, B_FALSE);
-
-	zfs_close(zhp);
-	return (ret);
-}
-
-/*
- * zfs promote <fs>
- *
- * Promotes the given clone fs to be the parent
- */
-/* ARGSUSED */
-static int
-zfs_do_promote(int argc, char **argv)
-{
-	zfs_handle_t *zhp;
-	int ret;
-
-	/* check options */
-	if (argc > 1 && argv[1][0] == '-') {
-		(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-		    argv[1][1]);
-		usage(B_FALSE);
-	}
-
-	/* check number of arguments */
-	if (argc < 2) {
-		(void) fprintf(stderr, gettext("missing clone filesystem"
-		    " argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc > 2) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		usage(B_FALSE);
-	}
-
-	zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
-	if (zhp == NULL)
-		return (1);
-
-	ret = (zfs_promote(zhp) != 0);
-
-	if (!ret)
-		zpool_log_history(g_zfs, argc, argv, argv[1], B_FALSE, B_FALSE);
-
-	zfs_close(zhp);
-	return (ret);
-}
-
-/*
- * zfs rollback [-rfR] <snapshot>
- *
- * 	-r	Delete any intervening snapshots before doing rollback
- * 	-R	Delete any snapshots and their clones
- * 	-f	Force unmount filesystems, even if they are in use.
- *
- * Given a filesystem, rollback to a specific snapshot, discarding any changes
- * since then and making it the active dataset.  If more recent snapshots exist,
- * the command will complain unless the '-r' flag is given.
- */
-typedef struct rollback_cbdata {
-	uint64_t	cb_create;
-	boolean_t	cb_first;
-	int		cb_doclones;
-	char		*cb_target;
-	int		cb_error;
-	boolean_t	cb_recurse;
-	boolean_t	cb_dependent;
-} rollback_cbdata_t;
-
-/*
- * Report any snapshots more recent than the one specified.  Used when '-r' is
- * not specified.  We reuse this same callback for the snapshot dependents - if
- * 'cb_dependent' is set, then this is a dependent and we should report it
- * without checking the transaction group.
- */
-static int
-rollback_check(zfs_handle_t *zhp, void *data)
-{
-	rollback_cbdata_t *cbp = data;
-
-	if (cbp->cb_doclones) {
-		zfs_close(zhp);
-		return (0);
-	}
-
-	if (!cbp->cb_dependent) {
-		if (strcmp(zfs_get_name(zhp), cbp->cb_target) != 0 &&
-		    zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
-		    zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) >
-		    cbp->cb_create) {
-
-			if (cbp->cb_first && !cbp->cb_recurse) {
-				(void) fprintf(stderr, gettext("cannot "
-				    "rollback to '%s': more recent snapshots "
-				    "exist\n"),
-				    cbp->cb_target);
-				(void) fprintf(stderr, gettext("use '-r' to "
-				    "force deletion of the following "
-				    "snapshots:\n"));
-				cbp->cb_first = 0;
-				cbp->cb_error = 1;
-			}
-
-			if (cbp->cb_recurse) {
-				cbp->cb_dependent = B_TRUE;
-				if (zfs_iter_dependents(zhp, B_TRUE,
-				    rollback_check, cbp) != 0) {
-					zfs_close(zhp);
-					return (-1);
-				}
-				cbp->cb_dependent = B_FALSE;
-			} else {
-				(void) fprintf(stderr, "%s\n",
-				    zfs_get_name(zhp));
-			}
-		}
-	} else {
-		if (cbp->cb_first && cbp->cb_recurse) {
-			(void) fprintf(stderr, gettext("cannot rollback to "
-			    "'%s': clones of previous snapshots exist\n"),
-			    cbp->cb_target);
-			(void) fprintf(stderr, gettext("use '-R' to "
-			    "force deletion of the following clones and "
-			    "dependents:\n"));
-			cbp->cb_first = 0;
-			cbp->cb_error = 1;
-		}
-
-		(void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
-	}
-
-	zfs_close(zhp);
-	return (0);
-}
-
-static int
-zfs_do_rollback(int argc, char **argv)
-{
-	int ret;
-	int c;
-	rollback_cbdata_t cb = { 0 };
-	zfs_handle_t *zhp, *snap;
-	char parentname[ZFS_MAXNAMELEN];
-	char *delim;
-	int force = 0;
-
-	/* check options */
-	while ((c = getopt(argc, argv, "rfR")) != -1) {
-		switch (c) {
-		case 'f':
-			force = 1;
-			break;
-		case 'r':
-			cb.cb_recurse = 1;
-			break;
-		case 'R':
-			cb.cb_recurse = 1;
-			cb.cb_doclones = 1;
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check number of arguments */
-	if (argc < 1) {
-		(void) fprintf(stderr, gettext("missing dataset argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc > 1) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		usage(B_FALSE);
-	}
-
-	/* open the snapshot */
-	if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
-		return (1);
-
-	/* open the parent dataset */
-	(void) strlcpy(parentname, argv[0], sizeof (parentname));
-	verify((delim = strrchr(parentname, '@')) != NULL);
-	*delim = '\0';
-	if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_ANY)) == NULL) {
-		zfs_close(snap);
-		return (1);
-	}
-
-	/*
-	 * Check for more recent snapshots and/or clones based on the presence
-	 * of '-r' and '-R'.
-	 */
-	cb.cb_target = argv[0];
-	cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
-	cb.cb_first = B_TRUE;
-	cb.cb_error = 0;
-	if ((ret = zfs_iter_children(zhp, rollback_check, &cb)) != 0)
-		goto out;
-
-	if ((ret = cb.cb_error) != 0)
-		goto out;
-
-	/*
-	 * Rollback parent to the given snapshot.
-	 */
-	ret = zfs_rollback(zhp, snap, force);
-
-	if (!ret) {
-		zpool_log_history(g_zfs, argc + optind, argv - optind, argv[0],
-		    B_FALSE, B_FALSE);
-	}
-
-out:
-	zfs_close(snap);
-	zfs_close(zhp);
-
-	if (ret == 0)
-		return (0);
-	else
-		return (1);
-}
-
-/*
- * zfs set property=value { fs | snap | vol } ...
- *
- * Sets the given property for all datasets specified on the command line.
- */
-typedef struct set_cbdata {
-	char		*cb_propname;
-	char		*cb_value;
-	boolean_t	cb_any_successful;
-} set_cbdata_t;
-
-static int
-set_callback(zfs_handle_t *zhp, void *data)
-{
-	set_cbdata_t *cbp = data;
-
-	if (zfs_prop_set(zhp, cbp->cb_propname, cbp->cb_value) != 0) {
-		switch (libzfs_errno(g_zfs)) {
-		case EZFS_MOUNTFAILED:
-			(void) fprintf(stderr, gettext("property may be set "
-			    "but unable to remount filesystem\n"));
-			break;
-		case EZFS_SHARENFSFAILED:
-			(void) fprintf(stderr, gettext("property may be set "
-			    "but unable to reshare filesystem\n"));
-			break;
-		}
-		return (1);
-	}
-	cbp->cb_any_successful = B_TRUE;
-	return (0);
-}
-
-static int
-zfs_do_set(int argc, char **argv)
-{
-	set_cbdata_t cb;
-	int ret;
-
-	/* check for options */
-	if (argc > 1 && argv[1][0] == '-') {
-		(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-		    argv[1][1]);
-		usage(B_FALSE);
-	}
-
-	/* check number of arguments */
-	if (argc < 2) {
-		(void) fprintf(stderr, gettext("missing property=value "
-		    "argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc < 3) {
-		(void) fprintf(stderr, gettext("missing dataset name\n"));
-		usage(B_FALSE);
-	}
-
-	/* validate property=value argument */
-	cb.cb_propname = argv[1];
-	if ((cb.cb_value = strchr(cb.cb_propname, '=')) == NULL) {
-		(void) fprintf(stderr, gettext("missing value in "
-		    "property=value argument\n"));
-		usage(B_FALSE);
-	}
-
-	*cb.cb_value = '\0';
-	cb.cb_value++;
-	cb.cb_any_successful = B_FALSE;
-
-	if (*cb.cb_propname == '\0') {
-		(void) fprintf(stderr,
-		    gettext("missing property in property=value argument\n"));
-		usage(B_FALSE);
-	}
-
-	ret = zfs_for_each(argc - 2, argv + 2, B_FALSE,
-	    ZFS_TYPE_ANY, NULL, NULL, set_callback, &cb, B_FALSE);
-
-	if (cb.cb_any_successful) {
-		*(cb.cb_value - 1) = '=';
-		zpool_log_history(g_zfs, argc, argv, argv[2], B_FALSE, B_FALSE);
-	}
-
-	return (ret);
-}
-
-/*
- * zfs snapshot [-r] <fs@snap>
- *
- * Creates a snapshot with the given name.  While functionally equivalent to
- * 'zfs create', it is a separate command to diffferentiate intent.
- */
-static int
-zfs_do_snapshot(int argc, char **argv)
-{
-	int recursive = B_FALSE;
-	int ret;
-	char c;
-
-	/* check options */
-	while ((c = getopt(argc, argv, ":r")) != -1) {
-		switch (c) {
-		case 'r':
-			recursive = B_TRUE;
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check number of arguments */
-	if (argc < 1) {
-		(void) fprintf(stderr, gettext("missing snapshot argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc > 1) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		usage(B_FALSE);
-	}
-
-	ret = zfs_snapshot(g_zfs, argv[0], recursive);
-	if (ret && recursive)
-		(void) fprintf(stderr, gettext("no snapshots were created\n"));
-	if (!ret) {
-		zpool_log_history(g_zfs, argc + optind, argv - optind, argv[0],
-		    B_FALSE, B_FALSE);
-	}
-	return (ret != 0);
-}
-
-/*
- * zfs send [-i <@snap>] <fs@snap>
- *
- * Send a backup stream to stdout.
- */
-static int
-zfs_do_send(int argc, char **argv)
-{
-	char *fromname = NULL;
-	char *cp;
-	zfs_handle_t *zhp;
-	int c, err;
-
-	/* check options */
-	while ((c = getopt(argc, argv, ":i:")) != -1) {
-		switch (c) {
-		case 'i':
-			if (fromname)
-				usage(B_FALSE);
-			fromname = optarg;
-			break;
-		case ':':
-			(void) fprintf(stderr, gettext("missing argument for "
-			    "'%c' option\n"), optopt);
-			usage(B_FALSE);
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check number of arguments */
-	if (argc < 1) {
-		(void) fprintf(stderr, gettext("missing snapshot argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc > 1) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		usage(B_FALSE);
-	}
-
-	if (isatty(STDOUT_FILENO)) {
-		(void) fprintf(stderr,
-		    gettext("Error: Stream can not be written to a terminal.\n"
-		    "You must redirect standard output.\n"));
-		return (1);
-	}
-
-	if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
-		return (1);
-
-	/*
-	 * If they specified the full path to the snapshot, chop off
-	 * everything except the short name of the snapshot.
-	 */
-	if (fromname && (cp = strchr(fromname, '@')) != NULL) {
-		if (cp != fromname &&
-		    strncmp(argv[0], fromname, cp - fromname + 1)) {
-			(void) fprintf(stderr,
-			    gettext("incremental source must be "
-			    "in same filesystem\n"));
-			usage(B_FALSE);
-		}
-		fromname = cp + 1;
-		if (strchr(fromname, '@') || strchr(fromname, '/')) {
-			(void) fprintf(stderr,
-			    gettext("invalid incremental source\n"));
-			usage(B_FALSE);
-		}
-	}
-
-	err = zfs_send(zhp, fromname, STDOUT_FILENO);
-	zfs_close(zhp);
-
-	return (err != 0);
-}
-
-/*
- * zfs receive <fs@snap>
- *
- * Restore a backup stream from stdin.
- */
-static int
-zfs_do_receive(int argc, char **argv)
-{
-	int c, err;
-	boolean_t isprefix = B_FALSE;
-	boolean_t dryrun = B_FALSE;
-	boolean_t verbose = B_FALSE;
-	boolean_t force = B_FALSE;
-
-	/* check options */
-	while ((c = getopt(argc, argv, ":dnvF")) != -1) {
-		switch (c) {
-		case 'd':
-			isprefix = B_TRUE;
-			break;
-		case 'n':
-			dryrun = B_TRUE;
-			break;
-		case 'v':
-			verbose = B_TRUE;
-			break;
-		case 'F':
-			force = B_TRUE;
-			break;
-		case ':':
-			(void) fprintf(stderr, gettext("missing argument for "
-			    "'%c' option\n"), optopt);
-			usage(B_FALSE);
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check number of arguments */
-	if (argc < 1) {
-		(void) fprintf(stderr, gettext("missing snapshot argument\n"));
-		usage(B_FALSE);
-	}
-	if (argc > 1) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		usage(B_FALSE);
-	}
-
-	if (isatty(STDIN_FILENO)) {
-		(void) fprintf(stderr,
-		    gettext("Error: Backup stream can not be read "
-		    "from a terminal.\n"
-		    "You must redirect standard input.\n"));
-		return (1);
-	}
-
-	err = zfs_receive(g_zfs, argv[0], isprefix, verbose, dryrun, force,
-	    STDIN_FILENO);
-
-	if (!err) {
-		zpool_log_history(g_zfs, argc + optind, argv - optind, argv[0],
-		    B_FALSE, B_FALSE);
-	}
-
-	return (err != 0);
-}
-
-typedef struct get_all_cbdata {
-	zfs_handle_t	**cb_handles;
-	size_t		cb_alloc;
-	size_t		cb_used;
-	uint_t		cb_types;
-} get_all_cbdata_t;
-
-static int
-get_one_dataset(zfs_handle_t *zhp, void *data)
-{
-	get_all_cbdata_t *cbp = data;
-	zfs_type_t type = zfs_get_type(zhp);
-
-	/*
-	 * Interate over any nested datasets.
-	 */
-	if (type == ZFS_TYPE_FILESYSTEM &&
-	    zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
-		zfs_close(zhp);
-		return (1);
-	}
-
-	/*
-	 * Skip any datasets whose type does not match.
-	 */
-	if ((type & cbp->cb_types) == 0) {
-		zfs_close(zhp);
-		return (0);
-	}
-
-	if (cbp->cb_alloc == cbp->cb_used) {
-		zfs_handle_t **handles;
-
-		if (cbp->cb_alloc == 0)
-			cbp->cb_alloc = 64;
-		else
-			cbp->cb_alloc *= 2;
-
-		handles = safe_malloc(cbp->cb_alloc * sizeof (void *));
-
-		if (cbp->cb_handles) {
-			bcopy(cbp->cb_handles, handles,
-			    cbp->cb_used * sizeof (void *));
-			free(cbp->cb_handles);
-		}
-
-		cbp->cb_handles = handles;
-	}
-
-	cbp->cb_handles[cbp->cb_used++] = zhp;
-
-	return (0);
-}
-
-static void
-get_all_datasets(uint_t types, zfs_handle_t ***dslist, size_t *count)
-{
-	get_all_cbdata_t cb = { 0 };
-	cb.cb_types = types;
-
-	(void) zfs_iter_root(g_zfs, get_one_dataset, &cb);
-
-	*dslist = cb.cb_handles;
-	*count = cb.cb_used;
-}
-
-static int
-dataset_cmp(const void *a, const void *b)
-{
-	zfs_handle_t **za = (zfs_handle_t **)a;
-	zfs_handle_t **zb = (zfs_handle_t **)b;
-	char mounta[MAXPATHLEN];
-	char mountb[MAXPATHLEN];
-	boolean_t gota, gotb;
-
-	if ((gota = (zfs_get_type(*za) == ZFS_TYPE_FILESYSTEM)) != 0)
-		verify(zfs_prop_get(*za, ZFS_PROP_MOUNTPOINT, mounta,
-		    sizeof (mounta), NULL, NULL, 0, B_FALSE) == 0);
-	if ((gotb = (zfs_get_type(*zb) == ZFS_TYPE_FILESYSTEM)) != 0)
-		verify(zfs_prop_get(*zb, ZFS_PROP_MOUNTPOINT, mountb,
-		    sizeof (mountb), NULL, NULL, 0, B_FALSE) == 0);
-
-	if (gota && gotb)
-		return (strcmp(mounta, mountb));
-
-	if (gota)
-		return (-1);
-	if (gotb)
-		return (1);
-
-	return (strcmp(zfs_get_name(a), zfs_get_name(b)));
-}
-
-/*
- * Generic callback for sharing or mounting filesystems.  Because the code is so
- * similar, we have a common function with an extra parameter to determine which
- * mode we are using.
- */
-#define	OP_SHARE	0x1
-#define	OP_MOUNT	0x2
-
-/*
- * Share or mount a dataset.
- */
-static int
-share_mount_one(zfs_handle_t *zhp, int op, int flags, boolean_t explicit,
-    const char *options)
-{
-	char mountpoint[ZFS_MAXPROPLEN];
-	char shareopts[ZFS_MAXPROPLEN];
-	const char *cmdname = op == OP_SHARE ? "share" : "mount";
-	struct mnttab mnt;
-	uint64_t zoned, canmount;
-	zfs_type_t type = zfs_get_type(zhp);
-
-	assert(type & (ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME));
-
-	if (type == ZFS_TYPE_FILESYSTEM) {
-		/*
-		 * Check to make sure we can mount/share this dataset.  If we
-		 * are in the global zone and the filesystem is exported to a
-		 * local zone, or if we are in a local zone and the
-		 * filesystem is not exported, then it is an error.
-		 */
-		zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
-
-		if (zoned && getzoneid() == GLOBAL_ZONEID) {
-			if (!explicit)
-				return (0);
-
-			(void) fprintf(stderr, gettext("cannot %s '%s': "
-			    "dataset is exported to a local zone\n"), cmdname,
-			    zfs_get_name(zhp));
-			return (1);
-
-		} else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
-			if (!explicit)
-				return (0);
-
-			(void) fprintf(stderr, gettext("cannot %s '%s': "
-			    "permission denied\n"), cmdname,
-			    zfs_get_name(zhp));
-			return (1);
-		}
-
-		/*
-		 * Ignore any filesystems which don't apply to us. This
-		 * includes those with a legacy mountpoint, or those with
-		 * legacy share options.
-		 */
-		verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
-		    sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
-		verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
-		    sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
-		canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
-
-		if (op == OP_SHARE && strcmp(shareopts, "off") == 0) {
-			if (!explicit)
-				return (0);
-
-			(void) fprintf(stderr, gettext("cannot share '%s': "
-			    "legacy share\n"), zfs_get_name(zhp));
-			(void) fprintf(stderr, gettext("use share(1M) to "
-			    "share this filesystem\n"));
-			return (1);
-		}
-
-		/*
-		 * We cannot share or mount legacy filesystems. If the
-		 * shareopts is non-legacy but the mountpoint is legacy, we
-		 * treat it as a legacy share.
-		 */
-		if (strcmp(mountpoint, "legacy") == 0) {
-			if (!explicit)
-				return (0);
-
-			(void) fprintf(stderr, gettext("cannot %s '%s': "
-			    "legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
-			(void) fprintf(stderr, gettext("use %s to "
-			    "%s this filesystem\n"), op == OP_SHARE ?
-			    "share(1M)" : "mount(1M)", cmdname);
-			return (1);
-		}
-
-		if (strcmp(mountpoint, "none") == 0) {
-			if (!explicit)
-				return (0);
-
-			(void) fprintf(stderr, gettext("cannot %s '%s': no "
-			    "mountpoint set\n"), cmdname, zfs_get_name(zhp));
-			return (1);
-		}
-
-		if (!canmount) {
-			if (!explicit)
-				return (0);
-
-			(void) fprintf(stderr, gettext("cannot %s '%s': "
-			    "'canmount' property is set to 'off'\n"), cmdname,
-			    zfs_get_name(zhp));
-			return (1);
-		}
-
-		/*
-		 * At this point, we have verified that the mountpoint and/or
-		 * shareopts are appropriate for auto management. If the
-		 * filesystem is already mounted or shared, return (failing
-		 * for explicit requests); otherwise mount or share the
-		 * filesystem.
-		 */
-		switch (op) {
-		case OP_SHARE:
-			if (zfs_is_shared_nfs(zhp, NULL)) {
-				if (!explicit)
-					return (0);
-
-				(void) fprintf(stderr, gettext("cannot share "
-				    "'%s': filesystem already shared\n"),
-				    zfs_get_name(zhp));
-				return (1);
-			}
-
-			if (!zfs_is_mounted(zhp, NULL) &&
-			    zfs_mount(zhp, NULL, 0) != 0)
-				return (1);
-
-			if (zfs_share_nfs(zhp) != 0)
-				return (1);
-			break;
-
-		case OP_MOUNT:
-			if (options == NULL)
-				mnt.mnt_mntopts = "";
-			else
-				mnt.mnt_mntopts = (char *)options;
-
-			if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
-			    zfs_is_mounted(zhp, NULL)) {
-				if (!explicit)
-					return (0);
-
-				(void) fprintf(stderr, gettext("cannot mount "
-				    "'%s': filesystem already mounted\n"),
-				    zfs_get_name(zhp));
-				return (1);
-			}
-
-			if (zfs_mount(zhp, options, flags) != 0)
-				return (1);
-			break;
-		}
-	} else {
-		assert(op == OP_SHARE);
-
-		/*
-		 * Ignore any volumes that aren't shared.
-		 */
-		verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, shareopts,
-		    sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
-
-		if (strcmp(shareopts, "off") == 0) {
-			if (!explicit)
-				return (0);
-
-			(void) fprintf(stderr, gettext("cannot share '%s': "
-			    "'shareiscsi' property not set\n"),
-			    zfs_get_name(zhp));
-			(void) fprintf(stderr, gettext("set 'shareiscsi' "
-			    "property or use iscsitadm(1M) to share this "
-			    "volume\n"));
-			return (1);
-		}
-
-		if (zfs_is_shared_iscsi(zhp)) {
-			if (!explicit)
-				return (0);
-
-			(void) fprintf(stderr, gettext("cannot share "
-			    "'%s': volume already shared\n"),
-			    zfs_get_name(zhp));
-			return (1);
-		}
-
-		if (zfs_share_iscsi(zhp) != 0)
-			return (1);
-	}
-
-	return (0);
-}
-
-static int
-share_mount(int op, int argc, char **argv)
-{
-	int do_all = 0;
-	int c, ret = 0;
-	const char *options = NULL;
-	int types, flags = 0;
-
-	/* check options */
-	while ((c = getopt(argc, argv, op == OP_MOUNT ? ":ao:O" : "a"))
-	    != -1) {
-		switch (c) {
-		case 'a':
-			do_all = 1;
-			break;
-		case 'o':
-			options = optarg;
-			break;
-		case 'O':
-			warnx("no overlay mounts support on FreeBSD, ignoring");
-			break;
-		case ':':
-			(void) fprintf(stderr, gettext("missing argument for "
-			    "'%c' option\n"), optopt);
-			usage(B_FALSE);
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check number of arguments */
-	if (do_all) {
-		zfs_handle_t **dslist = NULL;
-		size_t i, count = 0;
-
-		if (op == OP_MOUNT) {
-			types = ZFS_TYPE_FILESYSTEM;
-		} else if (argc > 0) {
-			if (strcmp(argv[0], "nfs") == 0) {
-				types = ZFS_TYPE_FILESYSTEM;
-			} else if (strcmp(argv[0], "iscsi") == 0) {
-				types = ZFS_TYPE_VOLUME;
-			} else {
-				(void) fprintf(stderr, gettext("share type "
-				    "must be 'nfs' or 'iscsi'\n"));
-				usage(B_FALSE);
-			}
-
-			argc--;
-			argv++;
-		} else {
-			types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
-		}
-
-		if (argc != 0) {
-			(void) fprintf(stderr, gettext("too many arguments\n"));
-			usage(B_FALSE);
-		}
-
-		get_all_datasets(types, &dslist, &count);
-
-		if (count == 0)
-			return (0);
-
-		qsort(dslist, count, sizeof (void *), dataset_cmp);
-
-		for (i = 0; i < count; i++) {
-			if (share_mount_one(dslist[i], op, flags, B_FALSE,
-			    options) != 0)
-				ret = 1;
-			zfs_close(dslist[i]);
-		}
-
-		free(dslist);
-	} else if (argc == 0) {
-		struct statfs *sfs;
-		int i, n;
-
-		if (op == OP_SHARE) {
-			(void) fprintf(stderr, gettext("missing filesystem "
-			    "argument\n"));
-			usage(B_FALSE);
-		}
-
-		/*
-		 * When mount is given no arguments, go through /etc/mnttab and
-		 * display any active ZFS mounts.  We hide any snapshots, since
-		 * they are controlled automatically.
-		 */
-		if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) {
-			fprintf(stderr, "getmntinfo(): %s\n", strerror(errno));
-			return (0);
-		}
-		for (i = 0; i < n; i++) {
-			if (strcmp(sfs[i].f_fstypename, MNTTYPE_ZFS) != 0 ||
-			    strchr(sfs[i].f_mntfromname, '@') != NULL)
-				continue;
-
-			(void) printf("%-30s  %s\n", sfs[i].f_mntfromname,
-			    sfs[i].f_mntonname);
-		}
-
-	} else {
-		zfs_handle_t *zhp;
-
-		types = ZFS_TYPE_FILESYSTEM;
-		if (op == OP_SHARE)
-			types |= ZFS_TYPE_VOLUME;
-
-		if (argc > 1) {
-			(void) fprintf(stderr,
-			    gettext("too many arguments\n"));
-			usage(B_FALSE);
-		}
-
-		if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL) {
-			ret = 1;
-		} else {
-			ret = share_mount_one(zhp, op, flags, B_TRUE,
-			    options);
-			zfs_close(zhp);
-		}
-	}
-
-	return (ret);
-}
-
-/*
- * zfs mount -a [nfs | iscsi]
- * zfs mount filesystem
- *
- * Mount all filesystems, or mount the given filesystem.
- */
-static int
-zfs_do_mount(int argc, char **argv)
-{
-	return (share_mount(OP_MOUNT, argc, argv));
-}
-
-/*
- * zfs share -a [nfs | iscsi]
- * zfs share filesystem
- *
- * Share all filesystems, or share the given filesystem.
- */
-static int
-zfs_do_share(int argc, char **argv)
-{
-	return (share_mount(OP_SHARE, argc, argv));
-}
-
-typedef struct unshare_unmount_node {
-	zfs_handle_t	*un_zhp;
-	char		*un_mountp;
-	uu_avl_node_t	un_avlnode;
-} unshare_unmount_node_t;
-
-/* ARGSUSED */
-static int
-unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
-{
-	const unshare_unmount_node_t *l = larg;
-	const unshare_unmount_node_t *r = rarg;
-
-	return (strcmp(l->un_mountp, r->un_mountp));
-}
-
-/*
- * Convenience routine used by zfs_do_umount() and manual_unmount().  Given an
- * absolute path, find the entry /etc/mnttab, verify that its a ZFS filesystem,
- * and unmount it appropriately.
- */
-static int
-unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
-{
-	zfs_handle_t *zhp;
-	int ret;
-	struct mnttab search = { 0 }, entry;
-	const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
-	char property[ZFS_MAXPROPLEN];
-
-	/*
-	 * Search for the given (major,minor) pair in the mount table.
-	 */
-	search.mnt_mountp = path;
-	rewind(mnttab_file);
-	if (getmntany(mnttab_file, &entry, &search) != 0) {
-		(void) fprintf(stderr, gettext("cannot %s '%s': not "
-		    "currently mounted\n"), cmdname, path);
-		return (1);
-	}
-
-	if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
-		(void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
-		    "filesystem\n"), cmdname, path);
-		return (1);
-	}
-
-	if ((zhp = zfs_open(g_zfs, entry.mnt_special,
-	    ZFS_TYPE_FILESYSTEM)) == NULL)
-		return (1);
-
-	verify(zfs_prop_get(zhp, op == OP_SHARE ?
-	    ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, property,
-	    sizeof (property), NULL, NULL, 0, B_FALSE) == 0);
-
-	if (op == OP_SHARE) {
-		if (strcmp(property, "off") == 0) {
-			(void) fprintf(stderr, gettext("cannot unshare "
-			    "'%s': legacy share\n"), path);
-			(void) fprintf(stderr, gettext("use "
-			    "unshare(1M) to unshare this filesystem\n"));
-			ret = 1;
-		} else if (!zfs_is_shared_nfs(zhp, NULL)) {
-			(void) fprintf(stderr, gettext("cannot unshare '%s': "
-			    "not currently shared\n"), path);
-			ret = 1;
-		} else {
-			ret = zfs_unshareall_nfs(zhp);
-		}
-	} else {
-		if (is_manual) {
-			ret = zfs_unmount(zhp, NULL, flags);
-		} else if (strcmp(property, "legacy") == 0) {
-			(void) fprintf(stderr, gettext("cannot unmount "
-			    "'%s': legacy mountpoint\n"),
-			    zfs_get_name(zhp));
-			(void) fprintf(stderr, gettext("use umount(1M) "
-			    "to unmount this filesystem\n"));
-			ret = 1;
-		} else {
-			ret = zfs_unmountall(zhp, flags);
-		}
-	}
-
-	zfs_close(zhp);
-
-	return (ret != 0);
-}
-
-/*
- * Generic callback for unsharing or unmounting a filesystem.
- */
-static int
-unshare_unmount(int op, int argc, char **argv)
-{
-	int do_all = 0;
-	int flags = 0;
-	int ret = 0;
-	int types, c;
-	zfs_handle_t *zhp;
-	char property[ZFS_MAXPROPLEN];
-
-	/* check options */
-	while ((c = getopt(argc, argv, op == OP_SHARE ? "a" : "af")) != -1) {
-		switch (c) {
-		case 'a':
-			do_all = 1;
-			break;
-		case 'f':
-			flags = MS_FORCE;
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			usage(B_FALSE);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	if (do_all) {
-		/*
-		 * We could make use of zfs_for_each() to walk all datasets in
-		 * the system, but this would be very inefficient, especially
-		 * since we would have to linearly search /etc/mnttab for each
-		 * one.  Instead, do one pass through /etc/mnttab looking for
-		 * zfs entries and call zfs_unmount() for each one.
-		 *
-		 * Things get a little tricky if the administrator has created
-		 * mountpoints beneath other ZFS filesystems.  In this case, we
-		 * have to unmount the deepest filesystems first.  To accomplish
-		 * this, we place all the mountpoints in an AVL tree sorted by
-		 * the special type (dataset name), and walk the result in
-		 * reverse to make sure to get any snapshots first.
-		 */
-		uu_avl_pool_t *pool;
-		uu_avl_t *tree;
-		unshare_unmount_node_t *node;
-		uu_avl_index_t idx;
-		uu_avl_walk_t *walk;
-		struct statfs *sfs;
-		int i, n;
-
-		if (argc != 0) {
-			(void) fprintf(stderr, gettext("too many arguments\n"));
-			usage(B_FALSE);
-		}
-
-		if ((pool = uu_avl_pool_create("unmount_pool",
-		    sizeof (unshare_unmount_node_t),
-		    offsetof(unshare_unmount_node_t, un_avlnode),
-		    unshare_unmount_compare,
-		    UU_DEFAULT)) == NULL) {
-			(void) fprintf(stderr, gettext("internal error: "
-			    "out of memory\n"));
-			exit(1);
-		}
-
-		if ((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL) {
-			(void) fprintf(stderr, gettext("internal error: "
-			    "out of memory\n"));
-			exit(1);
-		}
-
-		if ((n = getmntinfo(&sfs, MNT_WAIT)) == 0) {
-			(void) fprintf(stderr, gettext("internal error: "
-			    "getmntinfo() failed\n"));
-			exit(1);
-		}
-		for (i = 0; i < n; i++) {
-
-			/* ignore non-ZFS entries */
-			if (strcmp(sfs[i].f_fstypename, MNTTYPE_ZFS) != 0)
-				continue;
-
-			/* ignore snapshots */
-			if (strchr(sfs[i].f_mntfromname, '@') != NULL)
-				continue;
-
-			if ((zhp = zfs_open(g_zfs, sfs[i].f_mntfromname,
-			    ZFS_TYPE_FILESYSTEM)) == NULL) {
-				ret = 1;
-				continue;
-			}
-
-			verify(zfs_prop_get(zhp, op == OP_SHARE ?
-			    ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
-			    property, sizeof (property), NULL, NULL,
-			    0, B_FALSE) == 0);
-
-			/* Ignore legacy mounts and shares */
-			if ((op == OP_SHARE &&
-			    strcmp(property, "off") == 0) ||
-			    (op == OP_MOUNT &&
-			    strcmp(property, "legacy") == 0)) {
-				zfs_close(zhp);
-				continue;
-			}
-
-			node = safe_malloc(sizeof (unshare_unmount_node_t));
-			node->un_zhp = zhp;
-
-			if ((node->un_mountp = strdup(sfs[i].f_mntonname)) ==
-			    NULL) {
-				(void) fprintf(stderr, gettext("internal error:"
-				    " out of memory\n"));
-				exit(1);
-			}
-
-			uu_avl_node_init(node, &node->un_avlnode, pool);
-
-			if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
-				uu_avl_insert(tree, node, idx);
-			} else {
-				zfs_close(node->un_zhp);
-				free(node->un_mountp);
-				free(node);
-			}
-		}
-
-		/*
-		 * Walk the AVL tree in reverse, unmounting each filesystem and
-		 * removing it from the AVL tree in the process.
-		 */
-		if ((walk = uu_avl_walk_start(tree,
-		    UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL) {
-			(void) fprintf(stderr,
-			    gettext("internal error: out of memory"));
-			exit(1);
-		}
-
-		while ((node = uu_avl_walk_next(walk)) != NULL) {
-			uu_avl_remove(tree, node);
-
-			switch (op) {
-			case OP_SHARE:
-				if (zfs_unshare_nfs(node->un_zhp,
-				    node->un_mountp) != 0)
-					ret = 1;
-				break;
-
-			case OP_MOUNT:
-				if (zfs_unmount(node->un_zhp,
-				    node->un_mountp, flags) != 0)
-					ret = 1;
-				break;
-			}
-
-			zfs_close(node->un_zhp);
-			free(node->un_mountp);
-			free(node);
-		}
-
-		uu_avl_walk_end(walk);
-		uu_avl_destroy(tree);
-		uu_avl_pool_destroy(pool);
-
-		if (op == OP_SHARE) {
-			/*
-			 * Finally, unshare any volumes shared via iSCSI.
-			 */
-			zfs_handle_t **dslist = NULL;
-			size_t i, count = 0;
-
-			get_all_datasets(ZFS_TYPE_VOLUME, &dslist, &count);
-
-			if (count != 0) {
-				qsort(dslist, count, sizeof (void *),
-				    dataset_cmp);
-
-				for (i = 0; i < count; i++) {
-					if (zfs_unshare_iscsi(dslist[i]) != 0)
-						ret = 1;
-					zfs_close(dslist[i]);
-				}
-
-				free(dslist);
-			}
-		}
-	} else {
-		if (argc != 1) {
-			if (argc == 0)
-				(void) fprintf(stderr,
-				    gettext("missing filesystem argument\n"));
-			else
-				(void) fprintf(stderr,
-				    gettext("too many arguments\n"));
-			usage(B_FALSE);
-		}
-
-		/*
-		 * We have an argument, but it may be a full path or a ZFS
-		 * filesystem.  Pass full paths off to unmount_path() (shared by
-		 * manual_unmount), otherwise open the filesystem and pass to
-		 * zfs_unmount().
-		 */
-		if (argv[0][0] == '/')
-			return (unshare_unmount_path(op, argv[0],
-			    flags, B_FALSE));
-
-		types = ZFS_TYPE_FILESYSTEM;
-		if (op == OP_SHARE)
-			types |= ZFS_TYPE_VOLUME;
-
-		if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
-			return (1);
-
-		if (zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
-			verify(zfs_prop_get(zhp, op == OP_SHARE ?
-			    ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT, property,
-			    sizeof (property), NULL, NULL, 0, B_FALSE) == 0);
-
-			switch (op) {
-			case OP_SHARE:
-				if (strcmp(property, "off") == 0) {
-					(void) fprintf(stderr, gettext("cannot "
-					    "unshare '%s': legacy share\n"),
-					    zfs_get_name(zhp));
-					(void) fprintf(stderr, gettext("use "
-					    "unshare(1M) to unshare this "
-					    "filesystem\n"));
-					ret = 1;
-				} else if (!zfs_is_shared_nfs(zhp, NULL)) {
-					(void) fprintf(stderr, gettext("cannot "
-					    "unshare '%s': not currently "
-					    "shared\n"), zfs_get_name(zhp));
-					ret = 1;
-				} else if (zfs_unshareall_nfs(zhp) != 0) {
-					ret = 1;
-				}
-				break;
-
-			case OP_MOUNT:
-				if (strcmp(property, "legacy") == 0) {
-					(void) fprintf(stderr, gettext("cannot "
-					    "unmount '%s': legacy "
-					    "mountpoint\n"), zfs_get_name(zhp));
-					(void) fprintf(stderr, gettext("use "
-					    "umount(1M) to unmount this "
-					    "filesystem\n"));
-					ret = 1;
-				} else if (!zfs_is_mounted(zhp, NULL)) {
-					(void) fprintf(stderr, gettext("cannot "
-					    "unmount '%s': not currently "
-					    "mounted\n"),
-					    zfs_get_name(zhp));
-					ret = 1;
-				} else if (zfs_unmountall(zhp, flags) != 0) {
-					ret = 1;
-				}
-				break;
-			}
-		} else {
-			assert(op == OP_SHARE);
-
-			verify(zfs_prop_get(zhp, ZFS_PROP_SHAREISCSI, property,
-			    sizeof (property), NULL, NULL, 0, B_FALSE) == 0);
-
-			if (strcmp(property, "off") == 0) {
-				(void) fprintf(stderr, gettext("cannot unshare "
-				    "'%s': 'shareiscsi' property not set\n"),
-				    zfs_get_name(zhp));
-				(void) fprintf(stderr, gettext("set "
-				    "'shareiscsi' property or use "
-				    "iscsitadm(1M) to share this volume\n"));
-				ret = 1;
-			} else if (!zfs_is_shared_iscsi(zhp)) {
-				(void) fprintf(stderr, gettext("cannot "
-				    "unshare '%s': not currently shared\n"),
-				    zfs_get_name(zhp));
-				ret = 1;
-			} else if (zfs_unshare_iscsi(zhp) != 0) {
-				ret = 1;
-			}
-		}
-
-		zfs_close(zhp);
-	}
-
-	return (ret);
-}
-
-/*
- * zfs unmount -a
- * zfs unmount filesystem
- *
- * Unmount all filesystems, or a specific ZFS filesystem.
- */
-static int
-zfs_do_unmount(int argc, char **argv)
-{
-	return (unshare_unmount(OP_MOUNT, argc, argv));
-}
-
-/*
- * zfs unshare -a
- * zfs unshare filesystem
- *
- * Unshare all filesystems, or a specific ZFS filesystem.
- */
-static int
-zfs_do_unshare(int argc, char **argv)
-{
-	return (unshare_unmount(OP_SHARE, argc, argv));
-}
-
-/*
- * Attach/detach the given dataset to/from the given jail
- */
-/* ARGSUSED */
-static int
-do_jail(int argc, char **argv, int attach)
-{
-	zfs_handle_t *zhp;
-	int jailid, ret;
-
-	/* check number of arguments */
-	if (argc < 3) {
-		(void) fprintf(stderr, gettext("missing argument(s)\n"));
-		usage(B_FALSE);
-	}
-	if (argc > 3) {
-		(void) fprintf(stderr, gettext("too many arguments\n"));
-		usage(B_FALSE);
-	}
-
-	jailid = atoi(argv[1]);
-	if (jailid == 0) {
-		(void) fprintf(stderr, gettext("invalid jailid\n"));
-		usage(B_FALSE);
-	}
-
-	zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
-	if (zhp == NULL)
-		return (1);
-
-	ret = (zfs_jail(zhp, jailid, attach) != 0);
-
-	if (!ret)
-		zpool_log_history(g_zfs, argc, argv, argv[2], B_FALSE, B_FALSE);
-
-	zfs_close(zhp);
-	return (ret);
-}
-
-/*
- * zfs jail jailid filesystem
- *
- * Attach the given dataset to the given jail
- */
-/* ARGSUSED */
-static int
-zfs_do_jail(int argc, char **argv)
-{
-
-	return (do_jail(argc, argv, 1));
-}
-
-/*
- * zfs unjail jailid filesystem
- *
- * Detach the given dataset from the given jail
- */
-/* ARGSUSED */
-static int
-zfs_do_unjail(int argc, char **argv)
-{
-
-	return (do_jail(argc, argv, 0));
-}
-
-/*
- * Called when invoked as /etc/fs/zfs/mount.  Do the mount if the mountpoint is
- * 'legacy'.  Otherwise, complain that use should be using 'zfs mount'.
- */
-static int
-manual_mount(int argc, char **argv)
-{
-	zfs_handle_t *zhp;
-	char mountpoint[ZFS_MAXPROPLEN];
-	char mntopts[MNT_LINE_MAX] = { '\0' };
-	int ret;
-	int c;
-	int flags = 0;
-	char *dataset, *path;
-
-	/* check options */
-	while ((c = getopt(argc, argv, ":mo:O")) != -1) {
-		switch (c) {
-		case 'o':
-			(void) strlcpy(mntopts, optarg, sizeof (mntopts));
-			break;
-		case 'O':
-#if 0	/* FreeBSD: No support for MS_OVERLAY. */
-			flags |= MS_OVERLAY;
-#endif
-			break;
-		case 'm':
-#if 0	/* FreeBSD: No support for MS_NOMNTTAB. */
-			flags |= MS_NOMNTTAB;
-#endif
-			break;
-		case ':':
-			(void) fprintf(stderr, gettext("missing argument for "
-			    "'%c' option\n"), optopt);
-			usage(B_FALSE);
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			(void) fprintf(stderr, gettext("usage: mount [-o opts] "
-			    "<path>\n"));
-			return (2);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check that we only have two arguments */
-	if (argc != 2) {
-		if (argc == 0)
-			(void) fprintf(stderr, gettext("missing dataset "
-			    "argument\n"));
-		else if (argc == 1)
-			(void) fprintf(stderr,
-			    gettext("missing mountpoint argument\n"));
-		else
-			(void) fprintf(stderr, gettext("too many arguments\n"));
-		(void) fprintf(stderr, "usage: mount <dataset> <mountpoint>\n");
-		return (2);
-	}
-
-	dataset = argv[0];
-	path = argv[1];
-
-	/* try to open the dataset */
-	if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_FILESYSTEM)) == NULL)
-		return (1);
-
-	(void) zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
-	    sizeof (mountpoint), NULL, NULL, 0, B_FALSE);
-
-	/* check for legacy mountpoint and complain appropriately */
-	ret = 0;
-	if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
-		if (zmount(dataset, path, flags, MNTTYPE_ZFS,
-		    NULL, 0, mntopts, sizeof (mntopts)) != 0) {
-			(void) fprintf(stderr, gettext("mount failed: %s\n"),
-			    strerror(errno));
-			ret = 1;
-		}
-	} else {
-		(void) fprintf(stderr, gettext("filesystem '%s' cannot be "
-		    "mounted using 'mount -F zfs'\n"), dataset);
-		(void) fprintf(stderr, gettext("Use 'zfs set mountpoint=%s' "
-		    "instead.\n"), path);
-		(void) fprintf(stderr, gettext("If you must use 'mount -F zfs' "
-		    "or /etc/vfstab, use 'zfs set mountpoint=legacy'.\n"));
-		(void) fprintf(stderr, gettext("See zfs(1M) for more "
-		    "information.\n"));
-		ret = 1;
-	}
-
-	return (ret);
-}
-
-/*
- * Called when invoked as /etc/fs/zfs/umount.  Unlike a manual mount, we allow
- * unmounts of non-legacy filesystems, as this is the dominant administrative
- * interface.
- */
-static int
-manual_unmount(int argc, char **argv)
-{
-	int flags = 0;
-	int c;
-
-	/* check options */
-	while ((c = getopt(argc, argv, "f")) != -1) {
-		switch (c) {
-		case 'f':
-			flags = MS_FORCE;
-			break;
-		case '?':
-			(void) fprintf(stderr, gettext("invalid option '%c'\n"),
-			    optopt);
-			(void) fprintf(stderr, gettext("usage: unmount [-f] "
-			    "<path>\n"));
-			return (2);
-		}
-	}
-
-	argc -= optind;
-	argv += optind;
-
-	/* check arguments */
-	if (argc != 1) {
-		if (argc == 0)
-			(void) fprintf(stderr, gettext("missing path "
-			    "argument\n"));
-		else
-			(void) fprintf(stderr, gettext("too many arguments\n"));
-		(void) fprintf(stderr, gettext("usage: unmount [-f] <path>\n"));
-		return (2);
-	}
-
-	return (unshare_unmount_path(OP_MOUNT, argv[0], flags, B_TRUE));
-}
-
-static int
-volcheck(zpool_handle_t *zhp, void *data)
-{
-	boolean_t isinit = *((boolean_t *)data);
-
-	if (isinit)
-		return (zpool_create_zvol_links(zhp));
-	else
-		return (zpool_remove_zvol_links(zhp));
-}
-
-/*
- * Iterate over all pools in the system and either create or destroy /dev/zvol
- * links, depending on the value of 'isinit'.
- */
-static int
-do_volcheck(boolean_t isinit)
-{
-	return (zpool_iter(g_zfs, volcheck, &isinit) ? 1 : 0);
-}
-
-int
-main(int argc, char **argv)
-{
-	int ret;
-	int i;
-	char *progname;
-	char *cmdname;
-
-	(void) setlocale(LC_ALL, "");
-	(void) textdomain(TEXT_DOMAIN);
-
-	opterr = 0;
-
-	if ((g_zfs = libzfs_init()) == NULL) {
-		(void) fprintf(stderr, gettext("internal error: failed to "
-		    "initialize ZFS library\n"));
-		return (1);
-	}
-
-	libzfs_print_on_error(g_zfs, B_TRUE);
-
-	if ((mnttab_file = fopen(MNTTAB, "r")) == NULL) {
-		(void) fprintf(stderr, gettext("internal error: unable to "
-		    "open %s\n"), MNTTAB);
-		return (1);
-	}
-
-	/*
-	 * This command also doubles as the /etc/fs mount and unmount program.
-	 * Determine if we should take this behavior based on argv[0].
-	 */
-	progname = basename(argv[0]);
-	if (strcmp(progname, "mount") == 0) {
-		ret = manual_mount(argc, argv);
-	} else if (strcmp(progname, "umount") == 0) {
-		ret = manual_unmount(argc, argv);
-	} else {
-		/*
-		 * Make sure the user has specified some command.
-		 */
-		if (argc < 2) {
-			(void) fprintf(stderr, gettext("missing command\n"));
-			usage(B_FALSE);
-		}
-
-		cmdname = argv[1];
-
-		/*
-		 * The 'umount' command is an alias for 'unmount'
-		 */
-		if (strcmp(cmdname, "umount") == 0)
-			cmdname = "unmount";
-
-		/*
-		 * The 'recv' command is an alias for 'receive'
-		 */
-		if (strcmp(cmdname, "recv") == 0)
-			cmdname = "receive";
-
-		/*
-		 * Special case '-?'
-		 */
-		if (strcmp(cmdname, "-?") == 0)
-			usage(B_TRUE);
-
-		/*
-		 * 'volinit' and 'volfini' do not appear in the usage message,
-		 * so we have to special case them here.
-		 */
-		if (strcmp(cmdname, "volinit") == 0)
-			return (do_volcheck(B_TRUE));
-		else if (strcmp(cmdname, "volfini") == 0)
-			return (do_volcheck(B_FALSE));
-
-		/*
-		 * Run the appropriate command.
-		 */
-		for (i = 0; i < NCOMMAND; i++) {
-			if (command_table[i].name == NULL)
-				continue;
-
-			if (strcmp(cmdname, command_table[i].name) == 0) {
-				current_command = &command_table[i];
-				ret = command_table[i].func(argc - 1, argv + 1);
-				break;
-			}
-		}
-
-		if (i == NCOMMAND) {
-			(void) fprintf(stderr, gettext("unrecognized "
-			    "command '%s'\n"), cmdname);
-			usage(B_FALSE);
-		}
-	}
-
-	(void) fclose(mnttab_file);
-
-	libzfs_fini(g_zfs);
-
-	/*
-	 * The 'ZFS_ABORT' environment variable causes us to dump core on exit
-	 * for the purposes of running ::findleaks.
-	 */
-	if (getenv("ZFS_ABORT") != NULL) {
-		(void) printf("dumping core by request\n");
-		abort();
-	}
-
-	return (ret);
-}