libzfs_mount.c revision ea8dc4b6d2251b437950c0056bc626b311c73c27
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER START
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The contents of this file are subject to the terms of the
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * Common Development and Distribution License (the "License").
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * You may not use this file except in compliance with the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * or http://www.opensolaris.org/os/licensing.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * See the License for the specific language governing permissions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and limitations under the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * When distributing Covered Code, include this CDDL HEADER in each
fa9e4066f08beec538e775443c5be79dd423fcabahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If applicable, add the following below this CDDL HEADER, with the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * fields enclosed by brackets "[]" replaced with your own identifying
fa9e4066f08beec538e775443c5be79dd423fcabahrens * information: Portions Copyright [yyyy] [name of copyright owner]
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER END
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
260921a4509dd7666c6613f413be409b66181642eschrock * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Use is subject to license terms.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#pragma ident "%Z%%M% %I% %E% SMI"
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Routines to manage ZFS mounts. We separate all the nasty routines that have
fa9e4066f08beec538e775443c5be79dd423fcabahrens * to deal with the OS. The main entry points are:
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_is_mounted()
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_mount()
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_unmount()
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_unmountall()
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * These functions are used by mount and unmount, and when changing a
fa9e4066f08beec538e775443c5be79dd423fcabahrens * filesystem's mountpoint. This file also contains the functions used to
fa9e4066f08beec538e775443c5be79dd423fcabahrens * manage sharing filesystems via NFS:
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_is_shared()
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_share()
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_unshare()
fa9e4066f08beec538e775443c5be79dd423fcabahrens * zfs_unshareall()
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <dirent.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <errno.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <libgen.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <libintl.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <stdio.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <stdlib.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <strings.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <unistd.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <zone.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/mntent.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/mnttab.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/mount.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/stat.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <libzfs.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include "libzfs_impl.h"
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Search the sharetab for the given mountpoint, returning TRUE if it is found.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic int
fa9e4066f08beec538e775443c5be79dd423fcabahrensis_shared(const char *mountpoint)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens char buf[MAXPATHLEN], *tab;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock if (zfs_sharetab() == NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock (void) fseek(zfs_sharetab(), 0, SEEK_SET);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock while (fgets(buf, sizeof (buf), zfs_sharetab()) != NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* the mountpoint is the first entry on each line */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((tab = strchr(buf, '\t')) != NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens *tab = '\0';
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (strcmp(buf, mountpoint) == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Returns TRUE if the specified directory is empty. If we can't open the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * directory at all, return TRUE so that the mount can fail with a more
fa9e4066f08beec538e775443c5be79dd423fcabahrens * informative error message.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic int
fa9e4066f08beec538e775443c5be79dd423fcabahrensdir_is_empty(const char *dirname)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens DIR *dirp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct dirent64 *dp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((dirp = opendir(dirname)) == NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (TRUE);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens while ((dp = readdir64(dirp)) != NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (strcmp(dp->d_name, ".") == 0 ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens strcmp(dp->d_name, "..") == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) closedir(dirp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (FALSE);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) closedir(dirp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (TRUE);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Checks to see if the mount is active. If the filesystem is mounted, we fill
fa9e4066f08beec538e775443c5be79dd423fcabahrens * in 'where' with the current mountpoint, and return 1. Otherwise, we return
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 0.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_is_mounted(zfs_handle_t *zhp, char **where)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct mnttab search = { 0 }, entry;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Search for the entry in /etc/mnttab. We don't bother getting the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * mountpoint, as we can just search for the special device. This will
fa9e4066f08beec538e775443c5be79dd423fcabahrens * also let us find mounts when the mountpoint is 'legacy'.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens search.mnt_special = (char *)zfs_get_name(zhp);
96dedd18a4a04d13febde60137db5a12dc6350bdnd search.mnt_fstype = MNTTYPE_ZFS;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock rewind(zfs_mnttab());
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock if (getmntany(zfs_mnttab(), &entry, &search) != 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (FALSE);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (where != NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens *where = zfs_strdup(entry.mnt_mountp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (TRUE);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Mount the given filesystem.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_mount(zfs_handle_t *zhp, const char *options, int flags)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct stat buf;
fa9e4066f08beec538e775443c5be79dd423fcabahrens char mountpoint[ZFS_MAXPROPLEN];
fa9e4066f08beec538e775443c5be79dd423fcabahrens char mntopts[MNT_LINE_MAX];
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (options == NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens mntopts[0] = '\0';
fa9e4066f08beec538e775443c5be79dd423fcabahrens else
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) strlcpy(mntopts, options, sizeof (mntopts));
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* ignore non-filesystems */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
fa9e4066f08beec538e775443c5be79dd423fcabahrens sizeof (mountpoint), NULL, NULL, 0, FALSE) != 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* return success if there is no mountpoint set */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (strcmp(mountpoint, ZFS_MOUNTPOINT_NONE) == 0 ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If the 'zoned' property is set, and we're in the global zone, simply
fa9e4066f08beec538e775443c5be79dd423fcabahrens * return success.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens char zonename[ZONENAME_MAX];
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (getzonenamebyid(getzoneid(), zonename,
fa9e4066f08beec538e775443c5be79dd423fcabahrens sizeof (zonename)) < 0) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN, "internal error: "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "cannot determine current zone"));
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (strcmp(zonename, "global") == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* Create the directory if it doesn't already exist */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (lstat(mountpoint, &buf) != 0) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (mkdirp(mountpoint, 0755) != 0) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN, "cannot mount '%s': "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "unable to create mountpoint"), mountpoint);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Determine if the mountpoint is empty. If so, refuse to perform the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * mount. We don't perform this check if MS_OVERLAY is specified, which
fa9e4066f08beec538e775443c5be79dd423fcabahrens * would defeat the point. We also avoid this check if 'remount' is
fa9e4066f08beec538e775443c5be79dd423fcabahrens * specified.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((flags & MS_OVERLAY) == 0 &&
fa9e4066f08beec538e775443c5be79dd423fcabahrens strstr(mntopts, MNTOPT_REMOUNT) == NULL &&
fa9e4066f08beec538e775443c5be79dd423fcabahrens !dir_is_empty(mountpoint)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN, "cannot mount '%s': "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "directory is not empty"), mountpoint);
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN, "use legacy mountpoint to "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "allow this behavior, or use the -O flag"));
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* perform the mount */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (mount(zfs_get_name(zhp), mountpoint, MS_OPTIONSTR | flags,
fa9e4066f08beec538e775443c5be79dd423fcabahrens MNTTYPE_ZFS, NULL, 0, mntopts, sizeof (mntopts)) != 0) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Generic errors are nasty, but there are just way too many
fa9e4066f08beec538e775443c5be79dd423fcabahrens * from mount(), and they're well-understood. We pick a few
fa9e4066f08beec538e775443c5be79dd423fcabahrens * common ones to improve upon.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens switch (errno) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens case EBUSY:
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN, "cannot mount '%s': "
260921a4509dd7666c6613f413be409b66181642eschrock "mountpoint or dataset is busy"), zhp->zfs_name);
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens case EPERM:
fa9e4066f08beec538e775443c5be79dd423fcabahrens case EACCES:
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN, "cannot mount '%s': "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "permission denied"), zhp->zfs_name,
fa9e4066f08beec538e775443c5be79dd423fcabahrens mountpoint);
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens default:
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN,
fa9e4066f08beec538e775443c5be79dd423fcabahrens "cannot mount '%s': %s"),
fa9e4066f08beec538e775443c5be79dd423fcabahrens mountpoint, strerror(errno));
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Unmount the given filesystem.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_unmount(zfs_handle_t *zhp, const char *mountpoint, int flags)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct mnttab search = { 0 }, entry;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* check to see if need to unmount the filesystem */
fa9e4066f08beec538e775443c5be79dd423fcabahrens search.mnt_special = (char *)zfs_get_name(zhp);
96dedd18a4a04d13febde60137db5a12dc6350bdnd search.mnt_fstype = MNTTYPE_ZFS;
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock rewind(zfs_mnttab());
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (mountpoint != NULL || ((zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) &&
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock getmntany(zfs_mnttab(), &entry, &search) == 0)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (mountpoint == NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens mountpoint = entry.mnt_mountp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Always unshare the filesystem first.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_unshare(zhp, mountpoint) != 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Try to unmount the filesystem. There is no reason to try a
fa9e4066f08beec538e775443c5be79dd423fcabahrens * forced unmount because the vnodes will still carry a
fa9e4066f08beec538e775443c5be79dd423fcabahrens * reference to the underlying dataset, so we can't destroy it
fa9e4066f08beec538e775443c5be79dd423fcabahrens * anyway.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * In the unmount case, we print out a slightly more informative
fa9e4066f08beec538e775443c5be79dd423fcabahrens * error message, though we'll be relying on the poor error
fa9e4066f08beec538e775443c5be79dd423fcabahrens * semantics from the kernel.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (umount2(mountpoint, flags) != 0) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN,
fa9e4066f08beec538e775443c5be79dd423fcabahrens "cannot unmount '%s': %s"),
fa9e4066f08beec538e775443c5be79dd423fcabahrens mountpoint, strerror(errno));
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Don't actually destroy the underlying directory
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Unmount this filesystem and any children inheriting the mountpoint property.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * To do this, just act like we're changing the mountpoint property, but don't
fa9e4066f08beec538e775443c5be79dd423fcabahrens * remount the filesystems afterwards.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_unmountall(zfs_handle_t *zhp, int flags)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens prop_changelist_t *clp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens int ret;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens clp = changelist_gather(zhp, ZFS_PROP_MOUNTPOINT, flags);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (clp == NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ret = changelist_prefix(clp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens changelist_free(clp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (ret);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Check to see if the filesystem is currently shared.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_is_shared(zfs_handle_t *zhp, char **where)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens char *mountpoint;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (!zfs_is_mounted(zhp, &mountpoint))
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (FALSE);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (is_shared(mountpoint)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (where != NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens *where = mountpoint;
fa9e4066f08beec538e775443c5be79dd423fcabahrens else
fa9e4066f08beec538e775443c5be79dd423fcabahrens free(mountpoint);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (TRUE);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens free(mountpoint);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (FALSE);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Share the given filesystem according to the options in 'sharenfs'. We rely
fa9e4066f08beec538e775443c5be79dd423fcabahrens * on share(1M) to the dirty work for us.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_share(zfs_handle_t *zhp)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens char mountpoint[ZFS_MAXPROPLEN];
fa9e4066f08beec538e775443c5be79dd423fcabahrens char shareopts[ZFS_MAXPROPLEN];
fa9e4066f08beec538e775443c5be79dd423fcabahrens char buf[MAXPATHLEN];
fa9e4066f08beec538e775443c5be79dd423fcabahrens FILE *fp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* ignore non-filesystems */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* return success if there is no mountpoint set */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
fa9e4066f08beec538e775443c5be79dd423fcabahrens mountpoint, sizeof (mountpoint), NULL, NULL, 0, FALSE) != 0 ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens strcmp(mountpoint, ZFS_MOUNTPOINT_NONE) == 0 ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* return success if there are no share options */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts, sizeof (shareopts),
fa9e4066f08beec538e775443c5be79dd423fcabahrens NULL, NULL, 0, FALSE) != 0 ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens strcmp(shareopts, "off") == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If the 'zoned' property is set, simply return success since:
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 1. in a global zone, a dataset should not be shared if it's
fa9e4066f08beec538e775443c5be79dd423fcabahrens * managed in a local zone.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 2. in a local zone, NFS server is not available.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Invoke the share(1M) command. We always do this, even if it's
fa9e4066f08beec538e775443c5be79dd423fcabahrens * currently shared, as the options may have changed.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (strcmp(shareopts, "on") == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) snprintf(buf, sizeof (buf), "/usr/sbin/share "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "-F nfs \"%s\" 2>&1", mountpoint);
fa9e4066f08beec538e775443c5be79dd423fcabahrens else
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) snprintf(buf, sizeof (buf), "/usr/sbin/share "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "-F nfs -o \"%s\" \"%s\" 2>&1", shareopts,
fa9e4066f08beec538e775443c5be79dd423fcabahrens mountpoint);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((fp = popen(buf, "r")) == NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN, "cannot share '%s': "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "share(1M) failed"), zfs_get_name(zhp));
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * share(1M) should only produce output if there is some kind
fa9e4066f08beec538e775443c5be79dd423fcabahrens * of error. All output begins with "share_nfs: ", so we trim
fa9e4066f08beec538e775443c5be79dd423fcabahrens * this off to get to the real error.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (fgets(buf, sizeof (buf), fp) != NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens char *colon = strchr(buf, ':');
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens while (buf[strlen(buf) - 1] == '\n')
fa9e4066f08beec538e775443c5be79dd423fcabahrens buf[strlen(buf) - 1] = '\0';
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (colon == NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN, "cannot share "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "'%s': share(1M) failed"),
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_get_name(zhp));
fa9e4066f08beec538e775443c5be79dd423fcabahrens else
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN, "cannot share "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "'%s': %s"), zfs_get_name(zhp),
fa9e4066f08beec538e775443c5be79dd423fcabahrens colon + 2);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(pclose(fp) != 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(pclose(fp) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Unshare the given filesystem.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_unshare(zfs_handle_t *zhp, const char *mountpoint)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens char buf[MAXPATHLEN];
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct mnttab search = { 0 }, entry;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* check to see if need to unmount the filesystem */
fa9e4066f08beec538e775443c5be79dd423fcabahrens search.mnt_special = (char *)zfs_get_name(zhp);
96dedd18a4a04d13febde60137db5a12dc6350bdnd search.mnt_fstype = MNTTYPE_ZFS;
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock rewind(zfs_mnttab());
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (mountpoint != NULL || ((zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) &&
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock getmntany(zfs_mnttab(), &entry, &search) == 0)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (mountpoint == NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens mountpoint = entry.mnt_mountp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (is_shared(mountpoint)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens FILE *fp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) snprintf(buf, sizeof (buf),
fa9e4066f08beec538e775443c5be79dd423fcabahrens "/usr/sbin/unshare \"%s\" 2>&1",
fa9e4066f08beec538e775443c5be79dd423fcabahrens mountpoint);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((fp = popen(buf, "r")) == NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN, "cannot "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "unshare '%s': unshare(1M) failed"),
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_get_name(zhp));
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * unshare(1M) should only produce output if there is
fa9e4066f08beec538e775443c5be79dd423fcabahrens * some kind of error. All output begins with "unshare
fa9e4066f08beec538e775443c5be79dd423fcabahrens * nfs: ", so we trim this off to get to the real error.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (fgets(buf, sizeof (buf), fp) != NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens char *colon = strchr(buf, ':');
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens while (buf[strlen(buf) - 1] == '\n')
fa9e4066f08beec538e775443c5be79dd423fcabahrens buf[strlen(buf) - 1] = '\0';
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (colon == NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN,
fa9e4066f08beec538e775443c5be79dd423fcabahrens "cannot unshare '%s': unshare(1M) "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "failed"), zfs_get_name(zhp));
fa9e4066f08beec538e775443c5be79dd423fcabahrens else
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_error(dgettext(TEXT_DOMAIN,
fa9e4066f08beec538e775443c5be79dd423fcabahrens "cannot unshare '%s': %s"),
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_get_name(zhp), colon + 2);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(pclose(fp) != 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(pclose(fp) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Same as zfs_unmountall(), but for unshares.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
fa9e4066f08beec538e775443c5be79dd423fcabahrenszfs_unshareall(zfs_handle_t *zhp)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens prop_changelist_t *clp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens int ret;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens clp = changelist_gather(zhp, ZFS_PROP_SHARENFS, 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (clp == NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ret = changelist_unshare(clp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens changelist_free(clp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (ret);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Remove the mountpoint associated with the current dataset, if necessary.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * We only remove the underlying directory if:
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * - The mountpoint is not 'none' or 'legacy'
fa9e4066f08beec538e775443c5be79dd423fcabahrens * - The mountpoint is non-empty
fa9e4066f08beec538e775443c5be79dd423fcabahrens * - The mountpoint is the default or inherited
fa9e4066f08beec538e775443c5be79dd423fcabahrens * - The 'zoned' property is set, or we're in a local zone
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Any other directories we leave alone.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensvoid
fa9e4066f08beec538e775443c5be79dd423fcabahrensremove_mountpoint(zfs_handle_t *zhp)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens char mountpoint[ZFS_MAXPROPLEN];
fa9e4066f08beec538e775443c5be79dd423fcabahrens char source[ZFS_MAXNAMELEN];
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_source_t sourcetype;
fa9e4066f08beec538e775443c5be79dd423fcabahrens char zonename[ZONENAME_MAX];
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /* ignore non-filesystems */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
fa9e4066f08beec538e775443c5be79dd423fcabahrens sizeof (mountpoint), &sourcetype, source, sizeof (source),
fa9e4066f08beec538e775443c5be79dd423fcabahrens FALSE) != 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (getzonenamebyid(getzoneid(), zonename, sizeof (zonename)) < 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_fatal(dgettext(TEXT_DOMAIN, "internal error: "
fa9e4066f08beec538e775443c5be79dd423fcabahrens "cannot determine current zone"));
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (strcmp(mountpoint, ZFS_MOUNTPOINT_NONE) != 0 &&
fa9e4066f08beec538e775443c5be79dd423fcabahrens strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) != 0 &&
fa9e4066f08beec538e775443c5be79dd423fcabahrens (sourcetype == ZFS_SRC_DEFAULT ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens sourcetype == ZFS_SRC_INHERITED) &&
fa9e4066f08beec538e775443c5be79dd423fcabahrens (!zfs_prop_get_int(zhp, ZFS_PROP_ZONED) ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens strcmp(zonename, "global") != 0)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Try to remove the directory, silently ignoring any errors.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The filesystem may have since been removed or moved around,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and this isn't really useful to the administrator in any
fa9e4066f08beec538e775443c5be79dd423fcabahrens * way.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) rmdir(mountpoint);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens}