zfs.c revision 990b4856d0eaada6f8140335733a1b1771ed2746
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * CDDL HEADER START
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * The contents of this file are subject to the terms of the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Common Development and Distribution License (the "License").
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * You may not use this file except in compliance with the License.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * or http://www.opensolaris.org/os/licensing.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * See the License for the specific language governing permissions
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * and limitations under the License.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * When distributing Covered Code, include this CDDL HEADER in each
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * If applicable, add the following below this CDDL HEADER, with the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * fields enclosed by brackets "[]" replaced with your own identifying
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * information: Portions Copyright [yyyy] [name of copyright owner]
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * CDDL HEADER END
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Use is subject to license terms.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#pragma ident "%Z%%M% %I% %E% SMI"
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * This file contains the functions used to support the ZFS integration
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * with zones. This includes validation (e.g. zonecfg dataset), cloning,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * file system creation and destruction.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <stdio.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <errno.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <unistd.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <string.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <locale.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <libintl.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <sys/stat.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <sys/statvfs.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <libgen.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <libzonecfg.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <sys/mnttab.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include <libzfs.h>
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek#include "zoneadm.h"
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
99653d4ee642c6528e88224f12409a5f23060994eschrocklibzfs_handle_t *g_zfs;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinektypedef struct zfs_mount_data {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char *match_name;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *match_handle;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek} zfs_mount_data_t;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinektypedef struct zfs_snapshot_data {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char *match_name;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int len;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int max;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek} zfs_snapshot_data_t;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * A ZFS file system iterator call-back function which is used to validate
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * datasets imported into the zone.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/* ARGSUSED */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekcheck_zvol(zfs_handle_t *zhp, void *unused)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int ret;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_get_type(zhp) == ZFS_TYPE_VOLUME) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * TRANSLATION_NOTE
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * zfs and dataset are literals that should not be translated.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("cannot verify zfs dataset %s: "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "volumes cannot be specified as a zone dataset resource\n"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_get_name(zhp));
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek ret = -1;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek } else {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek ret = zfs_iter_children(zhp, check_zvol, NULL);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (ret);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * A ZFS file system iterator call-back function which returns the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * zfs_handle_t for a ZFS file system on the specified mount point.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekmatch_mountpoint(zfs_handle_t *zhp, void *data)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int res;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_mount_data_t *cbp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char mp[ZFS_MAXPROPLEN];
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (0);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek cbp = (zfs_mount_data_t *)data;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mp, sizeof (mp), NULL, NULL,
99653d4ee642c6528e88224f12409a5f23060994eschrock 0, B_FALSE) == 0 && strcmp(mp, cbp->match_name) == 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek cbp->match_handle = zhp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (1);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek res = zfs_iter_filesystems(zhp, match_mountpoint, data);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (res);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Get ZFS handle for the specified mount point.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic zfs_handle_t *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekmount2zhandle(char *mountpoint)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_mount_data_t cb;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek cb.match_name = mountpoint;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek cb.match_handle = NULL;
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) zfs_iter_root(g_zfs, match_mountpoint, &cb);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (cb.match_handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Check if there is already a file system (zfs or any other type) mounted on
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * path.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic boolean_t
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekis_mountpnt(char *path)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek FILE *fp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek struct mnttab entry;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((fp = fopen("/etc/mnttab", "r")) == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (B_FALSE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek while (getmntent(fp, &entry) == 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (strcmp(path, entry.mnt_mountp) == 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fclose(fp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fclose(fp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (B_FALSE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Perform any necessary housekeeping tasks we need to do before we take
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * a ZFS snapshot of the zone. What this really entails is that we are
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * taking a sw inventory of the source zone, like we do when we detach,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * so that there is the XML manifest in the snapshot. We use that to
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * validate the snapshot if it is the source of a clone at some later time.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekpre_snapshot(char *source_zone)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zone_dochandle_t handle;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((handle = zonecfg_init_handle()) == NULL) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(cmd_to_str(CMD_CLONE), B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = zonecfg_get_handle(source_zone, handle)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek errno = err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(cmd_to_str(CMD_CLONE), B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = zonecfg_get_detach_info(handle, B_TRUE)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek errno = err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(gettext("getting the software version information "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "failed"), B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
8cd327d5cbf74ddf7659863fac9475546ccd58cegjelinek if ((err = zonecfg_detach_save(handle, 0)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek errno = err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(gettext("saving the software version manifest failed"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_OK);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Perform any necessary housekeeping tasks we need to do after we take
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * a ZFS snapshot of the zone. What this really entails is removing the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * sw inventory XML file from the zone. It is still in the snapshot where
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * we want it, but we don't want it in the source zone itself.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekpost_snapshot(char *source_zone)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zone_dochandle_t handle;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((handle = zonecfg_init_handle()) == NULL) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(cmd_to_str(CMD_CLONE), B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = zonecfg_get_handle(source_zone, handle)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek errno = err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(cmd_to_str(CMD_CLONE), B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_rm_detached(handle, B_FALSE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_OK);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * This is a ZFS snapshot iterator call-back function which returns the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * highest number of SUNWzone snapshots that have been taken.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekget_snap_max(zfs_handle_t *zhp, void *data)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int res;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_snapshot_data_t *cbp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_get_type(zhp) != ZFS_TYPE_SNAPSHOT) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (0);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek cbp = (zfs_snapshot_data_t *)data;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (strncmp(zfs_get_name(zhp), cbp->match_name, cbp->len) == 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char *nump;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int num;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek nump = (char *)(zfs_get_name(zhp) + cbp->len);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek num = atoi(nump);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (num > cbp->max)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek cbp->max = num;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek res = zfs_iter_snapshots(zhp, get_snap_max, data);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (res);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Take a ZFS snapshot to be used for cloning the zone.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinektake_snapshot(char *source_zone, zfs_handle_t *zhp, char *snapshot_name,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int snap_size)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int res;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char template[ZFS_MAXNAMELEN];
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_snapshot_data_t cb;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * First we need to figure out the next available name for the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * zone snapshot. Look through the list of zones snapshots for
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * this file system to determine the maximum snapshot name.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (snprintf(template, sizeof (template), "%s@SUNWzone",
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_get_name(zhp)) >= sizeof (template))
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek cb.match_name = template;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek cb.len = strlen(template);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek cb.max = 0;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_iter_snapshots(zhp, get_snap_max, &cb) != 0)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek cb.max++;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (snprintf(snapshot_name, snap_size, "%s@SUNWzone%d",
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_get_name(zhp), cb.max) >= snap_size)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (pre_snapshot(source_zone) != Z_OK)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
1d452cf5123cb6ac0a013a4dbd4dcceeb0da314dahrens res = zfs_snapshot(g_zfs, snapshot_name, B_FALSE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (post_snapshot(source_zone) != Z_OK)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (res != 0)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_OK);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * We are using an explicit snapshot from some earlier point in time so
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * we need to validate it. This involves checking the sw inventory that
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * we took when we made the snapshot to verify that the current sw config
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * on the host is still valid to run a zone made from this snapshot.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekvalidate_snapshot(char *snapshot_name, char *snap_path)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zone_dochandle_t handle;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zone_dochandle_t athandle = NULL;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((handle = zonecfg_init_handle()) == NULL) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(cmd_to_str(CMD_CLONE), B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = zonecfg_get_handle(target_zone, handle)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek errno = err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(cmd_to_str(CMD_CLONE), B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((athandle = zonecfg_init_handle()) == NULL) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(cmd_to_str(CMD_CLONE), B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek goto done;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = zonecfg_get_attach_handle(snap_path, target_zone, B_TRUE,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek athandle)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (err == Z_NO_ZONE)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("snapshot %s was not "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "taken\n\tby a 'zoneadm clone' command. It can "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "not be used to clone zones.\n"), snapshot_name);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek else
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("snapshot %s is "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "out-dated\n\tIt can no longer be used to clone "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "zones on this system.\n"), snapshot_name);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek goto done;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /* Get the detach information for the locally defined zone. */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = zonecfg_get_detach_info(handle, B_FALSE)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek errno = err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(gettext("getting the attach information failed"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek goto done;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = sw_cmp(handle, athandle, SW_CMP_SILENT)) != Z_OK)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("snapshot %s is out-dated\n\t"
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "It can no longer be used to clone zones on this "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "system.\n"), snapshot_name);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekdone:
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (athandle != NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(athandle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (err);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Remove the sw inventory file from inside this zonepath that we picked up out
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * of the snapshot.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekclean_out_clone()
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zone_dochandle_t handle;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((handle = zonecfg_init_handle()) == NULL) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(cmd_to_str(CMD_CLONE), B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = zonecfg_get_handle(target_zone, handle)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek errno = err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror(cmd_to_str(CMD_CLONE), B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_rm_detached(handle, B_FALSE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonecfg_fini_handle(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_OK);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Make a ZFS clone on zonepath from snapshot_name.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekclone_snap(char *snapshot_name, char *zonepath)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int res = Z_OK;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int err;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *zhp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *clone;
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock nvlist_t *props = NULL;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zhp = zfs_open(g_zfs, snapshot_name, ZFS_TYPE_SNAPSHOT)) == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_NO_ENTRY);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) printf(gettext("Cloning snapshot %s\n"), snapshot_name);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0 ||
5f8e16172ef40e14cf931b329fedb86ea369a42cnn nvlist_add_string(props, zfs_prop_to_name(ZFS_PROP_SHARENFS),
5f8e16172ef40e14cf931b329fedb86ea369a42cnn "off") != 0) {
5f8e16172ef40e14cf931b329fedb86ea369a42cnn if (props != NULL)
5f8e16172ef40e14cf931b329fedb86ea369a42cnn nvlist_free(props);
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock (void) fprintf(stderr, gettext("could not create ZFS clone "
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock "%s: out of memory\n"), zonepath);
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock return (Z_ERR);
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock }
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock err = zfs_clone(zhp, zonepath, props);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock nvlist_free(props);
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (err != 0)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /* create the mountpoint if necessary */
990b4856d0eaada6f8140335733a1b1771ed2746lling if ((clone = zfs_open(g_zfs, zonepath, ZFS_TYPE_DATASET)) == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * The clone has been created so we need to print a diagnostic
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * message if one of the following steps fails for some reason.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_mount(clone, NULL, 0) != 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("could not mount ZFS clone "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "%s\n"), zfs_get_name(clone));
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek res = Z_ERR;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock } else if (clean_out_clone() != Z_OK) {
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock (void) fprintf(stderr, gettext("could not remove the "
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock "software inventory from ZFS clone %s\n"),
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock zfs_get_name(clone));
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock res = Z_ERR;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(clone);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (res);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * This function takes a zonepath and attempts to determine what the ZFS
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * file system name (not mountpoint) should be for that path. We do not
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * assume that zonepath is an existing directory or ZFS fs since we use
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * this function as part of the process of creating a new ZFS fs or clone.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * The way this works is that we look at the parent directory of the zonepath
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * to see if it is a ZFS fs. If it is, we get the name of that ZFS fs and
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * append the last component of the zonepath to generate the ZFS name for the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * zonepath. This matches the algorithm that ZFS uses for automatically
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * mounting a new fs after it is created.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Although a ZFS fs can be mounted anywhere, we don't worry about handling
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * all of the complexity that a user could possibly configure with arbitrary
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * mounts since there is no way to generate a ZFS name from a random path in
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * the file system. We only try to handle the automatic mounts that ZFS does
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * for each file system. ZFS restricts this so that a new fs must be created
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * in an existing parent ZFS fs. It then automatically mounts the new fs
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * directly under the mountpoint for the parent fs using the last component
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * of the name as the mountpoint directory.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * For example:
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Name Mountpoint
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * space/eng/dev/test/zone1 /project1/eng/dev/test/zone1
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Return Z_OK if the path mapped to a ZFS file system name, otherwise return
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Z_ERR.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekpath2name(char *zonepath, char *zfs_name, int len)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int res;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char *p;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *zhp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((p = strrchr(zonepath, '/')) == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * If the parent directory is not its own ZFS fs, then we can't
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * automatically create a new ZFS fs at the 'zonepath' mountpoint
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * so return an error.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *p = '\0';
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zhp = mount2zhandle(zonepath);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *p = '/';
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zhp == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek res = snprintf(zfs_name, len, "%s/%s", zfs_get_name(zhp), p + 1);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (res >= len)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_OK);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * A ZFS file system iterator call-back function used to determine if the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * file system has dependents (snapshots & clones).
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/* ARGSUSED */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekhas_dependent(zfs_handle_t *zhp, void *data)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (1);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Given a snapshot name, get the file system path where the snapshot lives.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * A snapshot name is of the form fs_name@snap_name. For example, snapshot
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * pl/zones/z1@SUNWzone1 would have a path of
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * /pl/zones/z1/.zfs/snapshot/SUNWzone1.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekstatic int
0b5de56d26c0148ad33bb3a9201091502f24d910gjelineksnap2path(char *snap_name, char *path, int len)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char *p;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *zhp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char mp[ZFS_MAXPROPLEN];
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((p = strrchr(snap_name, '@')) == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /* Get the file system name from the snap_name. */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *p = '\0';
990b4856d0eaada6f8140335733a1b1771ed2746lling zhp = zfs_open(g_zfs, snap_name, ZFS_TYPE_DATASET);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *p = '@';
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zhp == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /* Get the file system mount point. */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mp, sizeof (mp), NULL, NULL,
99653d4ee642c6528e88224f12409a5f23060994eschrock 0, B_FALSE) != 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek p++;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (snprintf(path, len, "%s/.zfs/snapshot/%s", mp, p) >= len)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_OK);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Clone a pre-existing ZFS snapshot, either by making a direct ZFS clone, if
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * possible, or by copying the data from the snapshot to the zonepath.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekint
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekclone_snapshot_zfs(char *snap_name, char *zonepath)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int err = Z_OK;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char clone_name[MAXPATHLEN];
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char snap_path[MAXPATHLEN];
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (snap2path(snap_name, snap_path, sizeof (snap_path)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("unable to find path for %s.\n"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek snap_name);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (validate_snapshot(snap_name, snap_path) != Z_OK)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_NO_ENTRY);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * The zonepath cannot be ZFS cloned, try to copy the data from
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * within the snapshot to the zonepath.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (path2name(zonepath, clone_name, sizeof (clone_name)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = clone_copy(snap_path, zonepath)) == Z_OK)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (clean_out_clone() != Z_OK)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek gettext("could not remove the "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "software inventory from %s\n"), zonepath);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (err);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = clone_snap(snap_name, clone_name)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (err != Z_NO_ENTRY) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Cloning the snapshot failed. Fall back to trying
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * to install the zone by copying from the snapshot.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((err = clone_copy(snap_path, zonepath)) == Z_OK)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (clean_out_clone() != Z_OK)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek gettext("could not remove the "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "software inventory from %s\n"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zonepath);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek } else {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * The snapshot is unusable for some reason so restore
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * the zone state to configured since we were unable to
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * actually do anything about getting the zone
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * installed.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int tmp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((tmp = zone_set_state(target_zone,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek ZONE_STATE_CONFIGURED)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek errno = tmp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zperror2(target_zone,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek gettext("could not set state"));
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (err);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Attempt to clone a source_zone to a target zonepath by using a ZFS clone.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekint
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekclone_zfs(char *source_zone, char *source_zonepath, char *zonepath)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *zhp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char clone_name[MAXPATHLEN];
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char snap_name[MAXPATHLEN];
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Try to get a zfs handle for the source_zonepath. If this fails
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * the source_zonepath is not ZFS so return an error.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((zhp = mount2zhandle(source_zonepath)) == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Check if there is a file system already mounted on zonepath. If so,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * we can't clone to the path so we should fall back to copying.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (is_mountpnt(zonepath)) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek gettext("A file system is already mounted on %s,\n"
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "preventing use of a ZFS clone.\n"), zonepath);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Instead of using path2name to get the clone name from the zonepath,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * we could generate a name from the source zone ZFS name. However,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * this would mean we would create the clone under the ZFS fs of the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * source instead of what the zonepath says. For example,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * source_zonepath zonepath
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * /pl/zones/dev/z1 /pl/zones/deploy/z2
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * We don't want the clone to be under "dev", we want it under
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * "deploy", so that we can leverage the normal attribute inheritance
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * that ZFS provides in the fs hierarchy.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (path2name(zonepath, clone_name, sizeof (clone_name)) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (take_snapshot(source_zone, zhp, snap_name, sizeof (snap_name))
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek if (clone_snap(snap_name, clone_name) != Z_OK) {
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek /* Clean up the snapshot we just took. */
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek if ((zhp = zfs_open(g_zfs, snap_name, ZFS_TYPE_SNAPSHOT))
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek != NULL) {
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek if (zfs_unmount(zhp, NULL, 0) == 0)
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek (void) zfs_destroy(zhp);
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek zfs_close(zhp);
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek }
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) printf(gettext("Instead of copying, a ZFS clone has been "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "created for this zone.\n"));
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_OK);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Attempt to create a ZFS file system for the specified zonepath.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * We either will successfully create a ZFS file system and get it mounted
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * on the zonepath or we don't. The caller doesn't care since a regular
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * directory is used for the zonepath if no ZFS file system is mounted there.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekvoid
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekcreate_zfs_zonepath(char *zonepath)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *zhp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char zfs_name[MAXPATHLEN];
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock nvlist_t *props = NULL;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (path2name(zonepath, zfs_name, sizeof (zfs_name)) != Z_OK)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0 ||
5f8e16172ef40e14cf931b329fedb86ea369a42cnn nvlist_add_string(props, zfs_prop_to_name(ZFS_PROP_SHARENFS),
5f8e16172ef40e14cf931b329fedb86ea369a42cnn "off") != 0) {
5f8e16172ef40e14cf931b329fedb86ea369a42cnn if (props != NULL)
5f8e16172ef40e14cf931b329fedb86ea369a42cnn nvlist_free(props);
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock (void) fprintf(stderr, gettext("cannot create ZFS dataset %s: "
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock "out of memory\n"), zfs_name);
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock }
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock if (zfs_create(g_zfs, zfs_name, ZFS_TYPE_FILESYSTEM, props) != 0 ||
990b4856d0eaada6f8140335733a1b1771ed2746lling (zhp = zfs_open(g_zfs, zfs_name, ZFS_TYPE_DATASET)) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) fprintf(stderr, gettext("cannot create ZFS dataset %s: "
99653d4ee642c6528e88224f12409a5f23060994eschrock "%s\n"), zfs_name, libzfs_error_description(g_zfs));
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock nvlist_free(props);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock nvlist_free(props);
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_mount(zhp, NULL, 0) != 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) fprintf(stderr, gettext("cannot mount ZFS dataset %s: "
99653d4ee642c6528e88224f12409a5f23060994eschrock "%s\n"), zfs_name, libzfs_error_description(g_zfs));
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) zfs_destroy(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek } else {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (chmod(zonepath, S_IRWXU) != 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("file system %s "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "successfully created, but chmod %o failed: %s\n"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_name, S_IRWXU, strerror(errno));
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) destroy_zfs(zonepath);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek } else {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) printf(gettext("A ZFS file system has been "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "created for this zone.\n"));
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * If the zonepath is a ZFS file system, attempt to destroy it. We return Z_OK
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * if we were able to zfs_destroy the zonepath, otherwise we return Z_ERR
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * which means the caller should clean up the zonepath in the traditional
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * way.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekint
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekdestroy_zfs(char *zonepath)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *zhp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek boolean_t is_clone = B_FALSE;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char origin[ZFS_MAXPROPLEN];
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zhp = mount2zhandle(zonepath)) == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * We can't destroy the file system if it has dependents.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
3bb79bece53191f2cf27aa61a72ea1784a7ce700eschrock if (zfs_iter_dependents(zhp, B_TRUE, has_dependent, NULL) != 0 ||
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_unmount(zhp, NULL, 0) != 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * This might be a clone. Try to get the snapshot so we can attempt
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * to destroy that as well.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_prop_get(zhp, ZFS_PROP_ORIGIN, origin, sizeof (origin), NULL,
99653d4ee642c6528e88224f12409a5f23060994eschrock NULL, 0, B_FALSE) == 0)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek is_clone = B_TRUE;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_destroy(zhp) != 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * If the destroy fails for some reason, try to remount
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * the file system so that we can use "rm -rf" to clean up
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * instead.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) zfs_mount(zhp, NULL, 0);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek /*
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek * If the zone has ever been moved then the mountpoint dir will not be
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek * cleaned up by the zfs_destroy(). To handle this case try to clean
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek * it up now but don't worry if it fails, that will be normal.
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek */
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek (void) rmdir(zonepath);
d9e728a2c2e62adeef072d782e4c8a7b34e7e8e8gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) printf(gettext("The ZFS file system for this zone has been "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "destroyed.\n"));
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (is_clone) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *ohp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Try to clean up the snapshot that the clone was taken from.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((ohp = zfs_open(g_zfs, origin,
99653d4ee642c6528e88224f12409a5f23060994eschrock ZFS_TYPE_SNAPSHOT)) != NULL) {
3bb79bece53191f2cf27aa61a72ea1784a7ce700eschrock if (zfs_iter_dependents(ohp, B_TRUE, has_dependent,
3bb79bece53191f2cf27aa61a72ea1784a7ce700eschrock NULL) == 0 && zfs_unmount(ohp, NULL, 0) == 0)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) zfs_destroy(ohp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(ohp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_OK);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Return true if the path is its own zfs file system. We determine this
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * by stat-ing the path to see if it is zfs and stat-ing the parent to see
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * if it is a different fs.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekboolean_t
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekis_zonepath_zfs(char *zonepath)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int res;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char *path;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char *parent;
3f2f09c1efd66f6d2995998ea72c5df8c70c9a97dp struct statvfs64 buf1, buf2;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
3f2f09c1efd66f6d2995998ea72c5df8c70c9a97dp if (statvfs64(zonepath, &buf1) != 0)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (B_FALSE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (strcmp(buf1.f_basetype, "zfs") != 0)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (B_FALSE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if ((path = strdup(zonepath)) == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (B_FALSE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek parent = dirname(path);
3f2f09c1efd66f6d2995998ea72c5df8c70c9a97dp res = statvfs64(parent, &buf2);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek free(path);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (res != 0)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (B_FALSE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (buf1.f_fsid == buf2.f_fsid)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (B_FALSE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (B_TRUE);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Implement the fast move of a ZFS file system by simply updating the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * mountpoint. Since it is file system already, we don't have the
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * issue of cross-file system copying.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekint
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekmove_zfs(char *zonepath, char *new_zonepath)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int ret = Z_ERR;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *zhp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zhp = mount2zhandle(zonepath)) == NULL)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock if (zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock new_zonepath) == 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Clean up the old mount point. We ignore any failure since
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * the zone is already successfully mounted on the new path.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) rmdir(zonepath);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek ret = Z_OK;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (ret);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Validate that the given dataset exists on the system, and that neither it nor
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * its children are zvols.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek *
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Note that we don't do anything with the 'zoned' property here. All
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * management is done in zoneadmd when the zone is actually rebooted. This
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * allows us to automatically set the zoned property even when a zone is
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * rebooted by the administrator.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekint
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekverify_datasets(zone_dochandle_t handle)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek int return_code = Z_OK;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek struct zone_dstab dstab;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *zhp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char propbuf[ZFS_MAXPROPLEN];
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char source[ZFS_MAXNAMELEN];
990b4856d0eaada6f8140335733a1b1771ed2746lling zprop_source_t srctype;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zonecfg_setdsent(handle) != Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek /*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * TRANSLATION_NOTE
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * zfs and dataset are literals that should not be translated.
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("could not verify zfs datasets: "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "unable to enumerate datasets\n"));
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek while (zonecfg_getdsent(handle, &dstab) == Z_OK) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zhp = zfs_open(g_zfs, dstab.zone_dataset_name,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) fprintf(stderr, gettext("could not verify zfs "
99653d4ee642c6528e88224f12409a5f23060994eschrock "dataset %s: %s\n"), dstab.zone_dataset_name,
99653d4ee642c6528e88224f12409a5f23060994eschrock libzfs_error_description(g_zfs));
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return_code = Z_ERR;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek continue;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, propbuf,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek sizeof (propbuf), &srctype, source,
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek sizeof (source), 0) == 0 &&
990b4856d0eaada6f8140335733a1b1771ed2746lling (srctype == ZPROP_SRC_INHERITED)) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("could not verify zfs "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "dataset %s: mountpoint cannot be inherited\n"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek dstab.zone_dataset_name);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return_code = Z_ERR;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek continue;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_get_type(zhp) == ZFS_TYPE_VOLUME) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("cannot verify zfs "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "dataset %s: volumes cannot be specified as a "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "zone dataset resource\n"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek dstab.zone_dataset_name);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return_code = Z_ERR;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_iter_children(zhp, check_zvol, NULL) != 0)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return_code = Z_ERR;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) zonecfg_enddsent(handle);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (return_code);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek/*
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * Verify that the ZFS dataset exists, and its mountpoint
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek * property is set to "legacy".
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek */
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekint
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinekverify_fs_zfs(struct zone_fstab *fstab)
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek{
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_handle_t *zhp;
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek char propbuf[ZFS_MAXPROPLEN];
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zhp = zfs_open(g_zfs, fstab->zone_fs_special,
990b4856d0eaada6f8140335733a1b1771ed2746lling ZFS_TYPE_DATASET)) == NULL) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("could not verify fs %s: "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "could not access zfs dataset '%s'\n"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek fstab->zone_fs_dir, fstab->zone_fs_special);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("cannot verify fs %s: "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "'%s' is not a file system\n"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek fstab->zone_fs_dir, fstab->zone_fs_special);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, propbuf, sizeof (propbuf),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek NULL, NULL, 0, 0) != 0 || strcmp(propbuf, "legacy") != 0) {
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek (void) fprintf(stderr, gettext("could not verify fs %s: "
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek "zfs '%s' mountpoint is not \"legacy\"\n"),
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek fstab->zone_fs_dir, fstab->zone_fs_special);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_ERR);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek }
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek zfs_close(zhp);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (Z_OK);
99653d4ee642c6528e88224f12409a5f23060994eschrock}
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrockint
99653d4ee642c6528e88224f12409a5f23060994eschrockinit_zfs(void)
99653d4ee642c6528e88224f12409a5f23060994eschrock{
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((g_zfs = libzfs_init()) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) fprintf(stderr, gettext("failed to initialize ZFS "
99653d4ee642c6528e88224f12409a5f23060994eschrock "library\n"));
99653d4ee642c6528e88224f12409a5f23060994eschrock return (Z_ERR);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek return (Z_OK);
0b5de56d26c0148ad33bb3a9201091502f24d910gjelinek}