illumos/illumos-gate: usr/src/lib/libbe/common/be

annotate usr/src/lib/libbe/common/be_mount.c @ 13025:3c7681e3e323

PSARC 2010/059 SNAP BE Management 6964804 SNAP BE management into ON 6971379 libbe should capture and give useful error when installgrub or ict.py fails. 6971390 beadm does not support labeled brand zones 6971394 BEADM_ERR_BE_DOES_NOT_EXIST has an extra space 6971397 libbe error messages need internationalization 6971402 Remove be_get_last_zone_be_callback 6971409 be_create_menu returns errors from both be_errno_t and errno sets

author	Glenn Lagasse <glenn.lagasse@oracle.com>
date	Wed, 04 Aug 2010 12:28:19 -0700
parents
children	a64c8d17c8f4

rev	line source
13025 3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2 * CDDL HEADER START
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	3 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	4 * The contents of this file are subject to the terms of the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	5 * Common Development and Distribution License (the "License").
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	6 * You may not use this file except in compliance with the License.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	7 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	9 * or http://www.opensolaris.org/os/licensing.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	10 * See the License for the specific language governing permissions
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	11 * and limitations under the License.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	12 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	13 * When distributing Covered Code, include this CDDL HEADER in each
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	15 * If applicable, add the following below this CDDL HEADER, with the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	16 * fields enclosed by brackets "[]" replaced with your own identifying
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	17 * information: Portions Copyright [yyyy] [name of copyright owner]
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	18 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	19 * CDDL HEADER END
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	20 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	21
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	22 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	24 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	25
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	26 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	27 * System includes
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	28 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	29 #include <assert.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	30 #include <errno.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	31 #include <libintl.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	32 #include <libnvpair.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	33 #include <libzfs.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	34 #include <stdio.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	35 #include <stdlib.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	36 #include <string.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	37 #include <sys/mntent.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	38 #include <sys/mnttab.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	39 #include <sys/mount.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	40 #include <sys/stat.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	41 #include <sys/types.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	42 #include <sys/vfstab.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	43 #include <sys/zone.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	44 #include <sys/mkdev.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	45 #include <unistd.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	46
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	47 #include <libbe.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	48 #include <libbe_priv.h>
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	49
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	50 #define BE_TMP_MNTPNT "/tmp/.be.XXXXXX"
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	51
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	52 typedef struct dir_data {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	53 char *dir;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	54 char *ds;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	55 } dir_data_t;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	56
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	57 /* Private function prototypes */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	58 static int be_mount_callback(zfs_handle_t , void );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	59 static int be_unmount_callback(zfs_handle_t , void );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	60 static int be_get_legacy_fs_callback(zfs_handle_t , void );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	61 static int fix_mountpoint(zfs_handle_t *);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	62 static int fix_mountpoint_callback(zfs_handle_t , void );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	63 static int get_mountpoint_from_vfstab(char , const char , char *, size_t,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	64 boolean_t);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	65 static int loopback_mount_shared_fs(zfs_handle_t , be_mount_data_t );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	66 static int loopback_mount_zonepath(const char , be_mount_data_t );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	67 static int iter_shared_fs_callback(zfs_handle_t , void );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	68 static int zpool_shared_fs_callback(zpool_handle_t , void );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	69 static int unmount_shared_fs(be_unmount_data_t *);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	70 static int add_to_fs_list(be_fs_list_data_t , const char );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	71 static int be_mount_root(zfs_handle_t , char );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	72 static int be_unmount_root(zfs_handle_t , be_unmount_data_t );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	73 static int be_mount_zones(zfs_handle_t , be_mount_data_t );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	74 static int be_unmount_zones(be_unmount_data_t *);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	75 static int be_mount_one_zone(zfs_handle_t , be_mount_data_t , char , char ,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	76 char *);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	77 static int be_unmount_one_zone(be_unmount_data_t , char , char , char );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	78 static int be_get_ds_from_dir_callback(zfs_handle_t , void );
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	79
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	80
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	81 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	82 /* Public Functions */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	83 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	84
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	85 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	86 * Function: be_mount
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	87 * Description: Mounts a BE and its subordinate datasets at a given mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	88 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	89 * be_attrs - pointer to nvlist_t of attributes being passed in.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	90 * The following attributes are used by this function:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	91 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	92 * BE_ATTR_ORIG_BE_NAME *required
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	93 * BE_ATTR_MOUNTPOINT *required
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	94 * BE_ATTR_MOUNT_FLAGS *optional
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	95 * Return:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	96 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	97 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	98 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	99 * Public
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	100 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	101 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	102 be_mount(nvlist_t *be_attrs)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	103 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	104 char *be_name = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	105 char *mountpoint = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	106 uint16_t flags = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	107 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	108
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	109 /* Initialize libzfs handle */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	110 if (!be_zfs_init())
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	111 return (BE_ERR_INIT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	112
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	113 /* Get original BE name */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	114 if (nvlist_lookup_string(be_attrs, BE_ATTR_ORIG_BE_NAME, &be_name)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	115 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	116 be_print_err(gettext("be_mount: failed to lookup "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	117 "BE_ATTR_ORIG_BE_NAME attribute\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	118 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	119 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	120
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	121 /* Validate original BE name */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	122 if (!be_valid_be_name(be_name)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	123 be_print_err(gettext("be_mount: invalid BE name %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	124 be_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	125 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	126 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	127
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	128 /* Get mountpoint */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	129 if (nvlist_lookup_string(be_attrs, BE_ATTR_MOUNTPOINT, &mountpoint)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	130 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	131 be_print_err(gettext("be_mount: failed to lookup "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	132 "BE_ATTR_MOUNTPOINT attribute\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	133 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	134 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	135
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	136 /* Get flags */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	137 if (nvlist_lookup_pairs(be_attrs, NV_FLAG_NOENTOK,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	138 BE_ATTR_MOUNT_FLAGS, DATA_TYPE_UINT16, &flags, NULL) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	139 be_print_err(gettext("be_mount: failed to lookup "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	140 "BE_ATTR_MOUNT_FLAGS attribute\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	141 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	142 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	143
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	144 ret = _be_mount(be_name, &mountpoint, flags);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	145
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	146 be_zfs_fini();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	147
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	148 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	149 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	150
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	151 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	152 * Function: be_unmount
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	153 * Description: Unmounts a BE and its subordinate datasets.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	154 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	155 * be_attrs - pointer to nvlist_t of attributes being passed in.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	156 * The following attributes are used by this function:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	157 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	158 * BE_ATTR_ORIG_BE_NAME *required
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	159 * BE_ATTR_UNMOUNT_FLAGS *optional
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	160 * Return:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	161 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	162 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	163 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	164 * Public
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	165 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	166 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	167 be_unmount(nvlist_t *be_attrs)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	168 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	169 char *be_name = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	170 uint16_t flags = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	171 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	172
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	173 /* Initialize libzfs handle */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	174 if (!be_zfs_init())
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	175 return (BE_ERR_INIT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	176
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	177 /* Get original BE name */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	178 if (nvlist_lookup_string(be_attrs, BE_ATTR_ORIG_BE_NAME, &be_name)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	179 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	180 be_print_err(gettext("be_unmount: failed to lookup "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	181 "BE_ATTR_ORIG_BE_NAME attribute\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	182 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	183 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	184
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	185 /* Validate original BE name */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	186 if (!be_valid_be_name(be_name)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	187 be_print_err(gettext("be_unmount: invalid BE name %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	188 be_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	189 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	190 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	191
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	192 /* Get unmount flags */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	193 if (nvlist_lookup_pairs(be_attrs, NV_FLAG_NOENTOK,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	194 BE_ATTR_UNMOUNT_FLAGS, DATA_TYPE_UINT16, &flags, NULL) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	195 be_print_err(gettext("be_unmount: failed to loookup "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	196 "BE_ATTR_UNMOUNT_FLAGS attribute\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	197 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	198 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	199
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	200 ret = _be_unmount(be_name, flags);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	201
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	202 be_zfs_fini();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	203
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	204 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	205 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	206
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	207 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	208 /* Semi-Private Functions */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	209 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	210
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	211 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	212 * Function: _be_mount
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	213 * Description: Mounts a BE. If the altroot is not provided, this function
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	214 * will generate a temporary mountpoint to mount the BE at. It
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	215 * will return this temporary mountpoint to the caller via the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	216 * altroot reference pointer passed in. This returned value is
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	217 * allocated on heap storage and is the repsonsibility of the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	218 * caller to free.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	219 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	220 * be_name - pointer to name of BE to mount.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	221 * altroot - reference pointer to altroot of where to mount BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	222 * flags - flag indicating special handling for mounting the BE
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	223 * Return:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	224 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	225 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	226 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	227 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	228 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	229 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	230 _be_mount(char be_name, char *altroot, int flags)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	231 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	232 be_transaction_data_t bt = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	233 be_mount_data_t md = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	234 zfs_handle_t *zhp;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	235 char obe_root_ds[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	236 char *mp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	237 char *tmp_altroot = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	238 int ret = BE_SUCCESS, err = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	239 uuid_t uu = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	240 boolean_t gen_tmp_altroot = B_FALSE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	241
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	242 if (be_name == NULL \|\| altroot == NULL)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	243 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	244
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	245 /* Set be_name as obe_name in bt structure */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	246 bt.obe_name = be_name;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	247
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	248 /* Find which zpool obe_name lives in */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	249 if ((err = zpool_iter(g_zfs, be_find_zpool_callback, &bt)) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	250 be_print_err(gettext("be_mount: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	251 "find zpool for BE (%s)\n"), bt.obe_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	252 return (BE_ERR_BE_NOENT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	253 } else if (err < 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	254 be_print_err(gettext("be_mount: zpool_iter failed: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	255 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	256 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	257 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	258
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	259 /* Generate string for obe_name's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	260 be_make_root_ds(bt.obe_zpool, bt.obe_name, obe_root_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	261 sizeof (obe_root_ds));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	262 bt.obe_root_ds = obe_root_ds;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	263
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	264 /* Get handle to BE's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	265 if ((zhp = zfs_open(g_zfs, bt.obe_root_ds, ZFS_TYPE_FILESYSTEM)) ==
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	266 NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	267 be_print_err(gettext("be_mount: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	268 "open BE root dataset (%s): %s\n"), bt.obe_root_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	269 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	270 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	271 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	272
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	273 /* Make sure BE's root dataset isn't already mounted somewhere */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	274 if (zfs_is_mounted(zhp, &mp)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	275 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	276 be_print_err(gettext("be_mount: %s is already mounted "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	277 "at %s\n"), bt.obe_name, mp != NULL ? mp : "");
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	278 free(mp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	279 return (BE_ERR_MOUNTED);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	280 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	281
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	282 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	283 * Fix this BE's mountpoint if its root dataset isn't set to
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	284 * either 'legacy' or '/'.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	285 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	286 if ((ret = fix_mountpoint(zhp)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	287 be_print_err(gettext("be_mount: mountpoint check "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	288 "failed for %s\n"), bt.obe_root_ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	289 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	290 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	291 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	292
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	293 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	294 * If altroot not provided, create a temporary alternate root
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	295 * to mount on
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	296 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	297 if (*altroot == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	298 if ((ret = be_make_tmp_mountpoint(&tmp_altroot))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	299 != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	300 be_print_err(gettext("be_mount: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	301 "make temporary mountpoint\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	302 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	303 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	304 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	305 gen_tmp_altroot = B_TRUE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	306 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	307 tmp_altroot = *altroot;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	308 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	309
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	310 /* Mount the BE's root file system */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	311 if ((ret = be_mount_root(zhp, tmp_altroot)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	312 be_print_err(gettext("be_mount: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	313 "mount BE root file system\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	314 if (gen_tmp_altroot)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	315 free(tmp_altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	316 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	317 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	318 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	319
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	320 /* Iterate through BE's children filesystems */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	321 if ((err = zfs_iter_filesystems(zhp, be_mount_callback,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	322 tmp_altroot)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	323 be_print_err(gettext("be_mount: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	324 "mount BE (%s) on %s\n"), bt.obe_name, tmp_altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	325 if (gen_tmp_altroot)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	326 free(tmp_altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	327 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	328 return (err);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	329 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	330
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	331 md.altroot = tmp_altroot;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	332 md.shared_fs = flags & BE_MOUNT_FLAG_SHARED_FS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	333 md.shared_rw = flags & BE_MOUNT_FLAG_SHARED_RW;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	334
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	335 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	336 * Mount shared file systems if mount flag says so.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	337 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	338 if (md.shared_fs) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	339 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	340 * Mount all ZFS file systems not under the BE's root dataset
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	341 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	342 (void) zpool_iter(g_zfs, zpool_shared_fs_callback, &md);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	343
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	344 /* TODO: Mount all non-ZFS file systems - Not supported yet */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	345 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	346
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	347 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	348 * If we're in the global zone and the global zone has a valid uuid,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	349 * mount all supported non-global zones.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	350 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	351 if (getzoneid() == GLOBAL_ZONEID &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	352 !(flags & BE_MOUNT_FLAG_NO_ZONES) &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	353 be_get_uuid(bt.obe_root_ds, &uu) == BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	354 if ((ret = be_mount_zones(zhp, &md)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	355 (void) _be_unmount(bt.obe_name, 0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	356 if (gen_tmp_altroot)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	357 free(tmp_altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	358 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	359 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	360 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	361 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	362
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	363 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	364
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	365 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	366 * If a NULL altroot was passed in, pass the generated altroot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	367 * back to the caller in altroot.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	368 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	369 if (gen_tmp_altroot)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	370 *altroot = tmp_altroot;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	371
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	372 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	373 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	374
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	375 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	376 * Function: _be_unmount
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	377 * Description: Unmount a BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	378 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	379 * be_name - pointer to name of BE to unmount.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	380 * flags - flags for unmounting the BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	381 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	382 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	383 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	384 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	385 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	386 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	387 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	388 _be_unmount(char *be_name, int flags)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	389 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	390 be_transaction_data_t bt = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	391 be_unmount_data_t ud = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	392 zfs_handle_t *zhp;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	393 uuid_t uu = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	394 char obe_root_ds[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	395 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	396 char *mp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	397 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	398 int zret = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	399
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	400 if (be_name == NULL)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	401 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	402
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	403 /* Set be_name as obe_name in bt structure */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	404 bt.obe_name = be_name;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	405
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	406 /* Find which zpool obe_name lives in */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	407 if ((zret = zpool_iter(g_zfs, be_find_zpool_callback, &bt)) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	408 be_print_err(gettext("be_unmount: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	409 "find zpool for BE (%s)\n"), bt.obe_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	410 return (BE_ERR_BE_NOENT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	411 } else if (zret < 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	412 be_print_err(gettext("be_unmount: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	413 "zpool_iter failed: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	414 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	415 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	416 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	417 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	418
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	419 /* Generate string for obe_name's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	420 be_make_root_ds(bt.obe_zpool, bt.obe_name, obe_root_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	421 sizeof (obe_root_ds));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	422 bt.obe_root_ds = obe_root_ds;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	423
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	424 /* Get handle to BE's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	425 if ((zhp = zfs_open(g_zfs, bt.obe_root_ds, ZFS_TYPE_FILESYSTEM)) ==
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	426 NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	427 be_print_err(gettext("be_unmount: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	428 "open BE root dataset (%s): %s\n"), bt.obe_root_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	429 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	430 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	431 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	432 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	433
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	434 /* Make sure BE's root dataset is mounted somewhere */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	435 if (!zfs_is_mounted(zhp, &mp)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	436
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	437 be_print_err(gettext("be_unmount: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	438 "(%s) not mounted\n"), bt.obe_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	439
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	440 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	441 * BE is not mounted, fix this BE's mountpoint if its root
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	442 * dataset isn't set to either 'legacy' or '/'.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	443 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	444 if ((ret = fix_mountpoint(zhp)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	445 be_print_err(gettext("be_unmount: mountpoint check "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	446 "failed for %s\n"), bt.obe_root_ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	447 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	448 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	449 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	450
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	451 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	452 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	453 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	454
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	455 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	456 * If we didn't get a mountpoint from the zfs_is_mounted call,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	457 * try and get it from its property.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	458 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	459 if (mp == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	460 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	461 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	462 be_print_err(gettext("be_unmount: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	463 "get mountpoint of (%s)\n"), bt.obe_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	464 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	465 return (BE_ERR_ZFS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	466 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	467 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	468 (void) strlcpy(mountpoint, mp, sizeof (mountpoint));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	469 free(mp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	470 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	471
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	472 /* If BE mounted as current root, fail */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	473 if (strcmp(mountpoint, "/") == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	474 be_print_err(gettext("be_unmount: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	475 "cannot unmount currently running BE\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	476 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	477 return (BE_ERR_UMOUNT_CURR_BE);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	478 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	479
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	480 ud.altroot = mountpoint;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	481 ud.force = flags & BE_UNMOUNT_FLAG_FORCE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	482
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	483 /* Unmount all supported non-global zones if we're in the global zone */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	484 if (getzoneid() == GLOBAL_ZONEID &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	485 be_get_uuid(bt.obe_root_ds, &uu) == BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	486 if ((ret = be_unmount_zones(&ud)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	487 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	488 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	489 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	490 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	491
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	492 /* TODO: Unmount all non-ZFS file systems - Not supported yet */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	493
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	494 /* Unmount all ZFS file systems not under the BE root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	495 if ((ret = unmount_shared_fs(&ud)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	496 be_print_err(gettext("be_unmount: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	497 "unmount shared file systems\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	498 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	499 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	500 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	501
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	502 /* Unmount all children datasets under the BE's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	503 if ((zret = zfs_iter_filesystems(zhp, be_unmount_callback,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	504 &ud)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	505 be_print_err(gettext("be_unmount: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	506 "unmount BE (%s)\n"), bt.obe_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	507 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	508 return (zret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	509 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	510
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	511 /* Unmount this BE's root filesystem */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	512 if ((ret = be_unmount_root(zhp, &ud)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	513 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	514 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	515 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	516
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	517 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	518
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	519 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	520 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	521
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	522 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	523 * Function: be_mount_zone_root
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	524 * Description: Mounts the zone root dataset for a zone.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	525 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	526 * zfs - zfs_handle_t pointer to zone root dataset
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	527 * md - be_mount_data_t pointer to data for zone to be mounted
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	528 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	529 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	530 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	531 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	532 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	533 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	534 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	535 be_mount_zone_root(zfs_handle_t zhp, be_mount_data_t md)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	536 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	537 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	538 int err = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	539
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	540 /* Get mountpoint property of dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	541 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	542 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	543 be_print_err(gettext("be_mount_zone_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	544 "get mountpoint property for %s: %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	545 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	546 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	547 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	548
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	549 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	550 * Make sure zone's root dataset is set to 'legacy'. This is
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	551 * currently a requirement in this implementation of zones
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	552 * support.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	553 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	554 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	555 be_print_err(gettext("be_mount_zone_root: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	556 "zone root dataset mountpoint is not 'legacy'\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	557 return (BE_ERR_ZONE_ROOT_NOT_LEGACY);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	558 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	559
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	560 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	561 * Legacy mount the zone root dataset.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	562 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	563 * As a workaround for 6176743, we mount the zone's root with the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	564 * MS_OVERLAY option in case an alternate BE is mounted, and we're
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	565 * mounting the root for the zone from the current BE here. When an
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	566 * alternate BE is mounted, it ties up the zone's zoneroot directory
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	567 * for the current BE since the zone's zonepath is loopback mounted
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	568 * from the current BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	569 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	570 * TODO: The MS_OVERLAY option needs to be removed when 6176743
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	571 * is fixed.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	572 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	573 if (mount(zfs_get_name(zhp), md->altroot, MS_OVERLAY, MNTTYPE_ZFS,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	574 NULL, 0, NULL, 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	575 err = errno;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	576 be_print_err(gettext("be_mount_zone_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	577 "legacy mount zone root dataset (%s) at %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	578 zfs_get_name(zhp), md->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	579 return (errno_to_be_err(err));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	580 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	581
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	582 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	583 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	584
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	585 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	586 * Function: be_unmount_zone_root
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	587 * Description: Unmounts the zone root dataset for a zone.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	588 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	589 * zhp - zfs_handle_t pointer to zone root dataset
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	590 * ud - be_unmount_data_t pointer to data for zone to be unmounted
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	591 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	592 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	593 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	594 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	595 * Semi-private (library wise use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	596 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	597 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	598 be_unmount_zone_root(zfs_handle_t zhp, be_unmount_data_t ud)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	599 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	600 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	601
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	602 /* Unmount the dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	603 if (zfs_unmount(zhp, NULL, ud->force ? MS_FORCE : 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	604 be_print_err(gettext("be_unmount_zone_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	605 "unmount zone root dataset %s: %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	606 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	607 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	608 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	609
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	610 /* Get the current mountpoint property for the zone root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	611 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	612 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	613 be_print_err(gettext("be_unmount_zone_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	614 "get mountpoint property for zone root dataset (%s): %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	615 zfs_get_name(zhp), libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	616 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	617 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	618
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	619 /* If mountpoint not already set to 'legacy', set it to 'legacy' */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	620 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	621 if (zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	622 ZFS_MOUNTPOINT_LEGACY) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	623 be_print_err(gettext("be_unmount_zone_root: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	624 "failed to set mountpoint of zone root dataset "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	625 "%s to 'legacy': %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	626 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	627 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	628 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	629 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	630
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	631 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	632 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	633
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	634 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	635 * Function: be_get_legacy_fs
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	636 * Description: This function iterates through all non-shared file systems
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	637 * of a BE and finds the ones with a legacy mountpoint. For
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	638 * those file systems, it reads the BE's vfstab to get the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	639 * mountpoint. If found, it adds that file system to the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	640 * be_fs_list_data_t passed in.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	641 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	642 * This function can be used to gather legacy mounted file systems
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	643 * for both global BEs and non-global zone BEs. To get data for
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	644 * a non-global zone BE, the zoneroot_ds and zoneroot parameters
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	645 * will be specified, otherwise they should be set to NULL.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	646 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	647 * be_name - global BE name from which to get legacy file
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	648 * system list.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	649 * be_root_ds - root dataset of global BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	650 * zoneroot_ds - root dataset of zone.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	651 * zoneroot - zoneroot path of zone.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	652 * fld - be_fs_list_data_t pointer.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	653 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	654 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	655 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	656 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	657 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	658 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	659 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	660 be_get_legacy_fs(char be_name, char be_root_ds, char *zoneroot_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	661 char zoneroot, be_fs_list_data_t fld)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	662 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	663 zfs_handle_t *zhp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	664 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	665 boolean_t mounted_here = B_FALSE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	666 boolean_t zone_mounted_here = B_FALSE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	667 int ret = BE_SUCCESS, err = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	668
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	669 if (be_name == NULL \|\| be_root_ds == NULL \|\| fld == NULL)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	670 return (BE_ERR_INVAL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	671
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	672 /* Get handle to BE's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	673 if ((zhp = zfs_open(g_zfs, be_root_ds, ZFS_TYPE_FILESYSTEM))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	674 == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	675 be_print_err(gettext("be_get_legacy_fs: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	676 "open BE root dataset (%s): %s\n"), be_root_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	677 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	678 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	679 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	680 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	681
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	682 /* If BE is not already mounted, mount it. */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	683 if (!zfs_is_mounted(zhp, &fld->altroot)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	684 if ((ret = _be_mount(be_name, &fld->altroot,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	685 zoneroot_ds ? BE_MOUNT_FLAG_NULL :
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	686 BE_MOUNT_FLAG_NO_ZONES)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	687 be_print_err(gettext("be_get_legacy_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	688 "failed to mount BE %s\n"), be_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	689 goto cleanup;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	690 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	691
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	692 mounted_here = B_TRUE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	693 } else if (fld->altroot == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	694 be_print_err(gettext("be_get_legacy_fs: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	695 "get altroot of mounted BE %s: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	696 be_name, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	697 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	698 goto cleanup;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	699 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	700
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	701 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	702 * If a zone root dataset was passed in, we're wanting to get
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	703 * legacy mounted file systems for that zone, not the global
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	704 * BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	705 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	706 if (zoneroot_ds != NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	707 be_mount_data_t zone_md = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	708
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	709 /* Close off handle to global BE's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	710 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	711
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	712 /* Get handle to zone's root dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	713 if ((zhp = zfs_open(g_zfs, zoneroot_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	714 ZFS_TYPE_FILESYSTEM)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	715 be_print_err(gettext("be_get_legacy_fs: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	716 "open zone BE root dataset (%s): %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	717 zoneroot_ds, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	718 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	719 goto cleanup;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	720 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	721
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	722 /* Make sure the zone we're looking for is mounted */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	723 if (!zfs_is_mounted(zhp, &zone_md.altroot)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	724 char zone_altroot[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	725
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	726 /* Generate alternate root path for zone */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	727 (void) snprintf(zone_altroot, sizeof (zone_altroot),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	728 "%s%s", fld->altroot, zoneroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	729 if ((zone_md.altroot = strdup(zone_altroot)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	730 be_print_err(gettext("be_get_legacy_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	731 "memory allocation failed\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	732 ret = BE_ERR_NOMEM;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	733 goto cleanup;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	734 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	735
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	736 if ((ret = be_mount_zone_root(zhp, &zone_md))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	737 != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	738 be_print_err(gettext("be_get_legacy_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	739 "failed to mount zone root %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	740 zoneroot_ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	741 free(zone_md.altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	742 zone_md.altroot = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	743 goto cleanup;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	744 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	745 zone_mounted_here = B_TRUE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	746 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	747
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	748 free(fld->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	749 fld->altroot = zone_md.altroot;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	750 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	751
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	752 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	753 * If the root dataset is in the vfstab with a mountpoint of "/",
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	754 * add it to the list
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	755 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	756 if (get_mountpoint_from_vfstab(fld->altroot, zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	757 mountpoint, sizeof (mountpoint), B_FALSE) == BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	758 if (strcmp(mountpoint, "/") == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	759 if (add_to_fs_list(fld, zfs_get_name(zhp))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	760 != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	761 be_print_err(gettext("be_get_legacy_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	762 "failed to add %s to fs list\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	763 zfs_get_name(zhp));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	764 ret = BE_ERR_INVAL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	765 goto cleanup;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	766 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	767 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	768 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	769
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	770 /* Iterate subordinate file systems looking for legacy mounts */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	771 if ((ret = zfs_iter_filesystems(zhp, be_get_legacy_fs_callback,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	772 fld)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	773 be_print_err(gettext("be_get_legacy_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	774 "failed to iterate %s to get legacy mounts\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	775 zfs_get_name(zhp));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	776 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	777
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	778 cleanup:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	779 /* If we mounted the zone BE, unmount it */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	780 if (zone_mounted_here) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	781 be_unmount_data_t zone_ud = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	782
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	783 zone_ud.altroot = fld->altroot;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	784 zone_ud.force = B_TRUE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	785 if ((err = be_unmount_zone_root(zhp, &zone_ud)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	786 be_print_err(gettext("be_get_legacy_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	787 "failed to unmount zone root %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	788 zoneroot_ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	789 if (ret == BE_SUCCESS)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	790 ret = err;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	791 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	792 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	793
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	794 /* If we mounted this BE, unmount it */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	795 if (mounted_here) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	796 if ((err = _be_unmount(be_name, 0)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	797 be_print_err(gettext("be_get_legacy_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	798 "failed to unmount %s\n"), be_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	799 if (ret == BE_SUCCESS)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	800 ret = err;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	801 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	802 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	803
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	804 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	805
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	806 free(fld->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	807 fld->altroot = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	808
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	809 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	810 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	811
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	812 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	813 * Function: be_free_fs_list
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	814 * Description: Function used to free the members of a be_fs_list_data_t
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	815 * structure.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	816 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	817 * fld - be_fs_list_data_t pointer to free.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	818 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	819 * None
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	820 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	821 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	822 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	823 void
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	824 be_free_fs_list(be_fs_list_data_t *fld)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	825 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	826 int i;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	827
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	828 if (fld == NULL)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	829 return;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	830
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	831 free(fld->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	832
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	833 if (fld->fs_list == NULL)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	834 return;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	835
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	836 for (i = 0; i < fld->fs_num; i++)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	837 free(fld->fs_list[i]);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	838
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	839 free(fld->fs_list);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	840 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	841
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	842 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	843 * Function: be_get_ds_from_dir(char *dir)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	844 * Description: Given a directory path, find the underlying dataset mounted
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	845 * at that directory path if there is one. The returned name
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	846 * is allocated in heap storage, so the caller is responsible
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	847 * for freeing it.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	848 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	849 * dir - char pointer of directory to find.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	850 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	851 * NULL - if directory is not mounted from a dataset.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	852 * name of dataset mounted at dir.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	853 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	854 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	855 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	856 char *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	857 be_get_ds_from_dir(char *dir)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	858 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	859 dir_data_t dd = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	860 char resolved_dir[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	861
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	862 /* Make sure length of dir is within the max length */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	863 if (dir == NULL \|\| strlen(dir) >= MAXPATHLEN)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	864 return (NULL);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	865
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	866 /* Resolve dir in case its lofs mounted */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	867 (void) strlcpy(resolved_dir, dir, sizeof (resolved_dir));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	868 z_resolve_lofs(resolved_dir, sizeof (resolved_dir));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	869
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	870 dd.dir = resolved_dir;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	871
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	872 (void) zfs_iter_root(g_zfs, be_get_ds_from_dir_callback, &dd);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	873
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	874 return (dd.ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	875 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	876
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	877 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	878 * Function: be_make_tmp_mountpoint
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	879 * Description: This function generates a random temporary mountpoint
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	880 * and creates that mountpoint directory. It returns the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	881 * mountpoint in heap storage, so the caller is responsible
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	882 * for freeing it.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	883 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	884 * tmp_mp - reference to pointer of where to store generated
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	885 * temporary mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	886 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	887 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	888 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	889 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	890 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	891 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	892 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	893 be_make_tmp_mountpoint(char **tmp_mp)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	894 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	895 int err = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	896
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	897 if ((tmp_mp = (char )calloc(1, sizeof (BE_TMP_MNTPNT) + 1)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	898 be_print_err(gettext("be_make_tmp_mountpoint: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	899 "malloc failed\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	900 return (BE_ERR_NOMEM);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	901 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	902 (void) strlcpy(*tmp_mp, BE_TMP_MNTPNT, sizeof (BE_TMP_MNTPNT) + 1);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	903 if (mkdtemp(*tmp_mp) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	904 err = errno;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	905 be_print_err(gettext("be_make_tmp_mountpoint: mkdtemp() failed "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	906 "for %s: %s\n"), *tmp_mp, strerror(err));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	907 free(*tmp_mp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	908 *tmp_mp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	909 return (errno_to_be_err(err));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	910 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	911
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	912 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	913 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	914
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	915 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	916 * Function: be_mount_pool
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	917 * Description: This function determines if the pool's datase is mounted
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	918 * and if not it is used to mount the pool's dataset. The
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	919 * function returns the current mountpoint if we are able
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	920 * to mount the dataset.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	921 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	922 * zhp - handle to the pool's dataset
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	923 * tmp_mntpnt - The temporary mountpoint that the pool's
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	924 * dataset is mounted on. This is set only
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	925 * if the attempt to mount the dataset at it's
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	926 * set mountpoint fails, and we've used a
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	927 * temporary mount point for this dataset. It
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	928 * is expected that the caller will free this
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	929 * memory.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	930 * orig_mntpnt - The original mountpoint for the pool. If a
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	931 * temporary mount point was needed this will
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	932 * be used to reset the mountpoint property to
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	933 * it's original mountpoint. It is expected that
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	934 * the caller will free this memory.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	935 * pool_mounted - This flag indicates that the pool was mounted
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	936 * in this function.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	937 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	938 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	939 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	940 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	941 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	942 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	943 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	944 be_mount_pool(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	945 zfs_handle_t *zhp,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	946 char **tmp_mntpnt,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	947 char **orig_mntpnt,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	948 boolean_t *pool_mounted)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	949 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	950
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	951 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	952 int ret = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	953
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	954 *tmp_mntpnt = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	955 *orig_mntpnt = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	956 *pool_mounted = B_FALSE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	957
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	958 if (!zfs_is_mounted(zhp, NULL)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	959 if (zfs_mount(zhp, NULL, 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	960 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	961 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	962 be_print_err(gettext("be_mount_pool: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	963 "get mountpoint of (%s): %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	964 zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	965 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	966 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	967 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	968 if ((*orig_mntpnt = strdup(mountpoint)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	969 be_print_err(gettext("be_mount_pool: memory "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	970 "allocation failed\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	971 return (BE_ERR_NOMEM);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	972 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	973 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	974 * attempt to mount on a temp mountpoint
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	975 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	976 if ((ret = be_make_tmp_mountpoint(tmp_mntpnt))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	977 != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	978 be_print_err(gettext("be_mount_pool: failed "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	979 "to make temporary mountpoint\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	980 free(*orig_mntpnt);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	981 *orig_mntpnt = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	982 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	983 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	984
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	985 if (zfs_prop_set(zhp,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	986 zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	987 *tmp_mntpnt) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	988 be_print_err(gettext("be_mount_pool: failed "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	989 "to set mountpoint of pool dataset %s to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	990 "%s: %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	991 *orig_mntpnt,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	992 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	993 free(*tmp_mntpnt);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	994 free(*orig_mntpnt);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	995 *orig_mntpnt = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	996 *tmp_mntpnt = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	997 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	998 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	999
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1000 if (zfs_mount(zhp, NULL, 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1001 be_print_err(gettext("be_mount_pool: failed "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1002 "to mount dataset %s at %s: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1003 zfs_get_name(zhp), *tmp_mntpnt,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1004 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1005 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1006 if (zfs_prop_set(zhp,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1007 zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1008 mountpoint) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1009 be_print_err(gettext("be_mount_pool: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1010 "failed to set mountpoint of pool "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1011 "dataset %s to %s: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1012 zfs_get_name(zhp), *tmp_mntpnt,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1013 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1014 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1015 free(*tmp_mntpnt);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1016 free(*orig_mntpnt);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1017 *orig_mntpnt = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1018 *tmp_mntpnt = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1019 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1020 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1021 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1022 *pool_mounted = B_TRUE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1023 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1024
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1025 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1026 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1027
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1028 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1029 * Function: be_unmount_pool
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1030 * Description: This function is used to unmount the pool's dataset if we
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1031 * mounted it previously using be_mount_pool().
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1032 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1033 * zhp - handle to the pool's dataset
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1034 * tmp_mntpnt - If a temprary mount point was used this will
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1035 * be set. Since this was created in be_mount_pool
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1036 * we will need to clean it up here.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1037 * orig_mntpnt - The original mountpoint for the pool. This is
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1038 * used to set the dataset mountpoint property
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1039 * back to it's original value in the case where a
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1040 * temporary mountpoint was used.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1041 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1042 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1043 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1044 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1045 * Semi-private (library wide use only)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1046 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1047 int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1048 be_unmount_pool(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1049 zfs_handle_t *zhp,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1050 char *tmp_mntpnt,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1051 char *orig_mntpnt)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1052 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1053 if (zfs_unmount(zhp, NULL, 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1054 be_print_err(gettext("be_unmount_pool: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1055 "unmount pool (%s): %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1056 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1057 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1058 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1059 if (orig_mntpnt != NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1060 if (tmp_mntpnt != NULL &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1061 strcmp(orig_mntpnt, tmp_mntpnt) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1062 (void) rmdir(tmp_mntpnt);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1063 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1064 if (zfs_prop_set(zhp,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1065 zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1066 orig_mntpnt) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1067 be_print_err(gettext("be_unmount_pool: failed "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1068 "to set the mountpoint for dataset (%s) to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1069 "%s: %s\n"), zfs_get_name(zhp), orig_mntpnt,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1070 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1071 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1072 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1073 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1074
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1075 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1076 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1077
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1078 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1079 /* Private Functions */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1080 /* ******************************************************************** */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1081
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1082 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1083 * Function: be_mount_callback
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1084 * Description: Callback function used to iterate through all of a BE's
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1085 * subordinate file systems and to mount them accordingly.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1086 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1087 * zhp - zfs_handle_t pointer to current file system being
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1088 * processed.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1089 * data - pointer to the altroot of where to mount BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1090 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1091 * 0 - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1092 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1093 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1094 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1095 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1096 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1097 be_mount_callback(zfs_handle_t zhp, void data)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1098 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1099 zprop_source_t sourcetype;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1100 const char *fs_name = zfs_get_name(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1101 char source[ZFS_MAXNAMELEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1102 char *altroot = data;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1103 char zhp_mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1104 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1105 int ret = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1106
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1107 /* Get dataset's mountpoint and source values */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1108 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, zhp_mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1109 sizeof (zhp_mountpoint), &sourcetype, source, sizeof (source),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1110 B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1111 be_print_err(gettext("be_mount_callback: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1112 "get mountpoint and sourcetype for %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1113 fs_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1114 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1115 return (BE_ERR_ZFS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1116 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1117
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1118 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1119 * Set this filesystem's 'canmount' property to 'noauto' just incase
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1120 * it's been set 'on'. We do this so that when we change its
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1121 * mountpoint zfs won't immediately try to mount it.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1122 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1123 if (zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_CANMOUNT), "noauto")) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1124 be_print_err(gettext("be_mount_callback: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1125 "set canmount to 'noauto' (%s)\n"), fs_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1126 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1127 return (BE_ERR_ZFS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1128 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1129
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1130 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1131 * If the mountpoint is none, there's nothing to do, goto next.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1132 * If the mountpoint is legacy, legacy mount it with mount(2).
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1133 * If the mountpoint is inherited, its mountpoint should
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1134 * already be set. If it's not, then explicitly fix-up
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1135 * the mountpoint now by appending its explicitly set
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1136 * mountpoint value to the BE mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1137 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1138 if (strcmp(zhp_mountpoint, ZFS_MOUNTPOINT_NONE) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1139 goto next;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1140 } else if (strcmp(zhp_mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1141 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1142 * If the mountpoint is set to 'legacy', we need to
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1143 * dig into this BE's vfstab to figure out where to
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1144 * mount it, and just mount it via mount(2).
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1145 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1146 if (get_mountpoint_from_vfstab(altroot, fs_name,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1147 mountpoint, sizeof (mountpoint), B_TRUE) == BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1148
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1149 /* Legacy mount the file system */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1150 if (mount(fs_name, mountpoint, MS_DATA,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1151 MNTTYPE_ZFS, NULL, 0, NULL, 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1152 be_print_err(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1153 gettext("be_mount_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1154 "failed to mount %s on %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1155 fs_name, mountpoint);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1156 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1157 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1158 be_print_err(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1159 gettext("be_mount_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1160 "no entry for %s in vfstab, "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1161 "skipping ...\n"), fs_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1162 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1163
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1164 goto next;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1165
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1166 } else if (sourcetype & ZPROP_SRC_INHERITED) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1167 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1168 * If the mountpoint is inherited, its parent should have
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1169 * already been processed so its current mountpoint value
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1170 * is what its mountpoint ought to be.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1171 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1172 (void) strlcpy(mountpoint, zhp_mountpoint, sizeof (mountpoint));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1173 } else if (sourcetype & ZPROP_SRC_LOCAL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1174 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1175 * Else process dataset with explicitly set mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1176 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1177 (void) snprintf(mountpoint, sizeof (mountpoint),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1178 "%s%s", altroot, zhp_mountpoint);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1179
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1180 /* Set the new mountpoint for the dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1181 if (zfs_prop_set(zhp,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1182 zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1183 mountpoint)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1184 be_print_err(gettext("be_mount_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1185 "failed to set mountpoint for %s to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1186 "%s\n"), fs_name, mountpoint);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1187 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1188 return (BE_ERR_ZFS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1189 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1190 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1191 be_print_err(gettext("be_mount_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1192 "mountpoint sourcetype of %s is %d, skipping ...\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1193 fs_name, sourcetype);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1194
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1195 goto next;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1196 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1197
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1198 /* Mount this filesystem */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1199 if (zfs_mount(zhp, NULL, 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1200 be_print_err(gettext("be_mount_callback: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1201 "mount dataset %s at %s: %s\n"), fs_name, mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1202 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1203 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1204 * Set this filesystem's 'mountpoint' property back to what
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1205 * it was
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1206 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1207 if (sourcetype & ZPROP_SRC_LOCAL &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1208 strcmp(zhp_mountpoint, ZFS_MOUNTPOINT_LEGACY) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1209 (void) zfs_prop_set(zhp,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1210 zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1211 zhp_mountpoint);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1212 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1213
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1214 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1215 return (BE_ERR_MOUNT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1216 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1217
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1218 next:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1219 /* Iterate through this dataset's children and mount them */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1220 if ((ret = zfs_iter_filesystems(zhp, be_mount_callback,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1221 altroot)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1222 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1223 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1224 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1225
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1226
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1227 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1228 return (0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1229 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1230
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1231 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1232 * Function: be_unmount_callback
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1233 * Description: Callback function used to iterate through all of a BE's
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1234 * subordinate file systems and to unmount them.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1235 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1236 * zhp - zfs_handle_t pointer to current file system being
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1237 * processed.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1238 * data - pointer to the mountpoint of where BE is mounted.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1239 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1240 * 0 - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1241 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1242 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1243 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1244 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1245 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1246 be_unmount_callback(zfs_handle_t zhp, void data)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1247 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1248 be_unmount_data_t *ud = data;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1249 zprop_source_t sourcetype;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1250 const char *fs_name = zfs_get_name(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1251 char source[ZFS_MAXNAMELEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1252 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1253 char *zhp_mountpoint;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1254 int ret = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1255
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1256 /* Iterate down this dataset's children first */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1257 if (zfs_iter_filesystems(zhp, be_unmount_callback, ud)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1258 ret = BE_ERR_UMOUNT;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1259 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1260 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1261
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1262 /* Is dataset even mounted ? */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1263 if (!zfs_is_mounted(zhp, NULL))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1264 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1265
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1266 /* Unmount this file system */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1267 if (zfs_unmount(zhp, NULL, ud->force ? MS_FORCE : 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1268 be_print_err(gettext("be_unmount_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1269 "failed to unmount %s: %s\n"), fs_name,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1270 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1271 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1272 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1273 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1274
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1275 /* Get dataset's current mountpoint and source value */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1276 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1277 sizeof (mountpoint), &sourcetype, source, sizeof (source),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1278 B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1279 be_print_err(gettext("be_unmount_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1280 "failed to get mountpoint and sourcetype for %s: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1281 fs_name, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1282 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1283 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1284 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1285
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1286 if (sourcetype & ZPROP_SRC_INHERITED) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1287 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1288 * If the mountpoint is inherited we don't need to
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1289 * do anything. When its parent gets processed
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1290 * its mountpoint will be set accordingly.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1291 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1292 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1293 } else if (sourcetype & ZPROP_SRC_LOCAL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1294
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1295 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1296 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1297 * If the mountpoint is set to 'legacy', its already
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1298 * been unmounted (from above call to zfs_unmount), and
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1299 * we don't need to do anything else with it.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1300 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1301 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1302
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1303 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1304 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1305 * Else process dataset with explicitly set mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1306 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1307
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1308 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1309 * Get this dataset's mountpoint relative to
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1310 * the BE's mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1311 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1312 if ((strncmp(mountpoint, ud->altroot,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1313 strlen(ud->altroot)) == 0) &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1314 (mountpoint[strlen(ud->altroot)] == '/')) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1315
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1316 zhp_mountpoint = mountpoint +
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1317 strlen(ud->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1318
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1319 /* Set this dataset's mountpoint value */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1320 if (zfs_prop_set(zhp,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1321 zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1322 zhp_mountpoint)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1323 be_print_err(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1324 gettext("be_unmount_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1325 "failed to set mountpoint for "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1326 "%s to %s: %s\n"), fs_name,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1327 zhp_mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1328 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1329 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1330 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1331 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1332 be_print_err(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1333 gettext("be_unmount_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1334 "%s not mounted under BE's altroot %s, "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1335 "skipping ...\n"), fs_name, ud->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1336 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1337 * fs_name is mounted but not under the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1338 * root for this BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1339 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1340 ret = BE_ERR_INVALMOUNTPOINT;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1341 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1342 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1343 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1344 be_print_err(gettext("be_unmount_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1345 "mountpoint sourcetype of %s is %d, skipping ...\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1346 fs_name, sourcetype);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1347 ret = BE_ERR_ZFS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1348 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1349
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1350 done:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1351 /* Set this filesystem's 'canmount' property to 'noauto' */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1352 if (zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_CANMOUNT), "noauto")) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1353 be_print_err(gettext("be_unmount_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1354 "failed to set canmount to 'noauto' (%s)\n"), fs_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1355 if (ret == 0)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1356 ret = BE_ERR_ZFS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1357 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1358
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1359 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1360 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1361 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1362
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1363 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1364 * Function: be_get_legacy_fs_callback
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1365 * Description: The callback function is used to iterate through all
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1366 * non-shared file systems of a BE, finding ones that have
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1367 * a legacy mountpoint and an entry in the BE's vfstab.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1368 * It adds these file systems to the callback data.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1369 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1370 * zhp - zfs_handle_t pointer to current file system being
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1371 * processed.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1372 * data - be_fs_list_data_t pointer
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1373 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1374 * 0 - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1375 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1376 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1377 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1378 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1379 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1380 be_get_legacy_fs_callback(zfs_handle_t zhp, void data)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1381 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1382 be_fs_list_data_t *fld = data;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1383 const char *fs_name = zfs_get_name(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1384 char zhp_mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1385 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1386 int ret = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1387
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1388 /* Get this dataset's mountpoint property */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1389 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, zhp_mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1390 sizeof (zhp_mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1391 be_print_err(gettext("be_get_legacy_fs_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1392 "failed to get mountpoint for %s: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1393 fs_name, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1394 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1395 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1396 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1397 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1398
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1399 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1400 * If mountpoint is legacy, try to get its mountpoint from this BE's
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1401 * vfstab. If it exists in the vfstab, add this file system to the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1402 * callback data.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1403 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1404 if (strcmp(zhp_mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1405 if (get_mountpoint_from_vfstab(fld->altroot, fs_name,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1406 mountpoint, sizeof (mountpoint), B_FALSE) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1407 be_print_err(gettext("be_get_legacy_fs_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1408 "no entry for %s in vfstab, "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1409 "skipping ...\n"), fs_name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1410
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1411 goto next;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1412 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1413
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1414 /* Record file system into the callback data. */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1415 if (add_to_fs_list(fld, zfs_get_name(zhp)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1416 be_print_err(gettext("be_get_legacy_fs_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1417 "failed to add %s to fs list\n"), mountpoint);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1418 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1419 return (BE_ERR_NOMEM);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1420 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1421 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1422
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1423 next:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1424 /* Iterate through this dataset's children file systems */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1425 if ((ret = zfs_iter_filesystems(zhp, be_get_legacy_fs_callback,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1426 fld)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1427 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1428 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1429 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1430 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1431 return (0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1432 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1433
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1434 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1435 * Function: add_to_fs_list
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1436 * Description: Function used to add a file system to the fs_list array in
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1437 * a be_fs_list_data_t structure.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1438 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1439 * fld - be_fs_list_data_t pointer
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1440 * fs - file system to add
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1441 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1442 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1443 * 1 - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1444 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1445 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1446 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1447 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1448 add_to_fs_list(be_fs_list_data_t fld, const char fs)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1449 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1450 if (fld == NULL \|\| fs == NULL)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1451 return (1);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1452
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1453 if ((fld->fs_list = (char **)realloc(fld->fs_list,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1454 sizeof (char )(fld->fs_num + 1))) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1455 be_print_err(gettext("add_to_fs_list: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1456 "memory allocation failed\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1457 return (1);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1458 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1459
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1460 if ((fld->fs_list[fld->fs_num++] = strdup(fs)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1461 be_print_err(gettext("add_to_fs_list: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1462 "memory allocation failed\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1463 return (1);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1464 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1465
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1466 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1467 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1468
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1469 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1470 * Function: zpool_shared_fs_callback
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1471 * Description: Callback function used to iterate through all existing pools
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1472 * to find and mount all shared filesystems. This function
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1473 * processes the pool's "pool data" dataset, then uses
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1474 * iter_shared_fs_callback to iterate through the pool's
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1475 * datasets.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1476 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1477 * zlp - zpool_handle_t pointer to the current pool being
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1478 * looked at.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1479 * data - be_mount_data_t pointer
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1480 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1481 * 0 - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1482 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1483 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1484 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1485 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1486 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1487 zpool_shared_fs_callback(zpool_handle_t zlp, void data)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1488 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1489 be_mount_data_t *md = data;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1490 zfs_handle_t *zhp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1491 const char *zpool = zpool_get_name(zlp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1492 int ret = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1493
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1494 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1495 * Get handle to pool's "pool data" dataset
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1496 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1497 if ((zhp = zfs_open(g_zfs, zpool, ZFS_TYPE_FILESYSTEM)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1498 be_print_err(gettext("zpool_shared_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1499 "failed to open pool dataset %s: %s\n"), zpool,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1500 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1501 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1502 zpool_close(zlp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1503 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1504 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1505
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1506 /* Process this pool's "pool data" dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1507 (void) loopback_mount_shared_fs(zhp, md);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1508
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1509 /* Interate through this pool's children */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1510 (void) zfs_iter_filesystems(zhp, iter_shared_fs_callback, md);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1511
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1512 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1513 zpool_close(zlp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1514
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1515 return (0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1516 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1517
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1518 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1519 * Function: iter_shared_fs_callback
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1520 * Description: Callback function used to iterate through a pool's datasets
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1521 * to find and mount all shared filesystems. It makes sure to
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1522 * find the BE container dataset of the pool, if it exists, and
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1523 * does not process and iterate down that path.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1524 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1525 * Note - This function iterates linearly down the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1526 * hierarchical dataset paths and mounts things as it goes
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1527 * along. It does not make sure that something deeper down
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1528 * a dataset path has an interim mountpoint for something
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1529 * processed earlier.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1530 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1531 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1532 * zhp - zfs_handle_t pointer to the current dataset being
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1533 * processed.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1534 * data - be_mount_data_t pointer
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1535 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1536 * 0 - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1537 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1538 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1539 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1540 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1541 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1542 iter_shared_fs_callback(zfs_handle_t zhp, void data)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1543 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1544 be_mount_data_t *md = data;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1545 const char *name = zfs_get_name(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1546 char container_ds[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1547 char tmp_name[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1548 char *pool;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1549
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1550 /* Get the pool's name */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1551 (void) strlcpy(tmp_name, name, sizeof (tmp_name));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1552 pool = strtok(tmp_name, "/");
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1553
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1554 if (pool) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1555 /* Get the name of this pool's container dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1556 be_make_container_ds(pool, container_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1557 sizeof (container_ds));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1558
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1559 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1560 * If what we're processing is this pool's BE container
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1561 * dataset, skip it.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1562 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1563 if (strcmp(name, container_ds) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1564 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1565 return (0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1566 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1567 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1568 /* Getting the pool name failed, return error */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1569 be_print_err(gettext("iter_shared_fs_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1570 "failed to get pool name from %s\n"), name);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1571 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1572 return (BE_ERR_POOL_NOENT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1573 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1574
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1575 /* Mount this shared filesystem */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1576 (void) loopback_mount_shared_fs(zhp, md);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1577
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1578 /* Iterate this dataset's children file systems */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1579 (void) zfs_iter_filesystems(zhp, iter_shared_fs_callback, md);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1580 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1581
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1582 return (0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1583 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1584
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1585 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1586 * Function: loopback_mount_shared_fs
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1587 * Description: This function loopback mounts a file system into the altroot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1588 * area of the BE being mounted. Since these are shared file
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1589 * systems, they are expected to be already mounted for the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1590 * current BE, and this function just loopback mounts them into
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1591 * the BE mountpoint. If they are not mounted for the current
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1592 * live system, they are skipped and not mounted into the BE
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1593 * we're mounting.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1594 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1595 * zhp - zfs_handle_t pointer to the dataset to loopback mount
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1596 * md - be_mount_data_t pointer
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1597 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1598 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1599 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1600 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1601 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1602 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1603 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1604 loopback_mount_shared_fs(zfs_handle_t zhp, be_mount_data_t md)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1605 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1606 char zhp_mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1607 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1608 char *mp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1609 char optstr[MAX_MNTOPT_STR];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1610 int mflag = MS_OPTIONSTR;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1611 int err;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1612
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1613 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1614 * Check if file system is currently mounted and not delegated
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1615 * to a non-global zone (if we're in the global zone)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1616 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1617 if (zfs_is_mounted(zhp, &mp) && (getzoneid() != GLOBAL_ZONEID \|\|
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1618 !zfs_prop_get_int(zhp, ZFS_PROP_ZONED))) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1619 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1620 * If we didn't get a mountpoint from the zfs_is_mounted call,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1621 * get it from the mountpoint property.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1622 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1623 if (mp == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1624 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1625 zhp_mountpoint, sizeof (zhp_mountpoint), NULL,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1626 NULL, 0, B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1627 be_print_err(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1628 gettext("loopback_mount_shared_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1629 "failed to get mountpoint property\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1630 return (BE_ERR_ZFS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1631 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1632 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1633 (void) strlcpy(zhp_mountpoint, mp,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1634 sizeof (zhp_mountpoint));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1635 free(mp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1636 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1637
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1638 (void) snprintf(mountpoint, sizeof (mountpoint), "%s%s",
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1639 md->altroot, zhp_mountpoint);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1640
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1641 /* Mount it read-only if read-write was not requested */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1642 if (!md->shared_rw) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1643 mflag \|= MS_RDONLY;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1644 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1645
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1646 /* Add the "nosub" option to the mount options string */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1647 (void) strlcpy(optstr, MNTOPT_NOSUB, sizeof (optstr));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1648
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1649 /* Loopback mount this dataset at the altroot */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1650 if (mount(zhp_mountpoint, mountpoint, mflag, MNTTYPE_LOFS,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1651 NULL, 0, optstr, sizeof (optstr)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1652 err = errno;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1653 be_print_err(gettext("loopback_mount_shared_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1654 "failed to loopback mount %s at %s: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1655 zhp_mountpoint, mountpoint, strerror(err));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1656 return (BE_ERR_MOUNT);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1657 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1658 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1659
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1660 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1661 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1662
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1663 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1664 * Function: loopback_mount_zonepath
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1665 * Description: This function loopback mounts a zonepath into the altroot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1666 * area of the BE being mounted. Since these are shared file
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1667 * systems, they are expected to be already mounted for the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1668 * current BE, and this function just loopback mounts them into
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1669 * the BE mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1670 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1671 * zonepath - pointer to zone path in the current BE
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1672 * md - be_mount_data_t pointer
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1673 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1674 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1675 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1676 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1677 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1678 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1679 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1680 loopback_mount_zonepath(const char zonepath, be_mount_data_t md)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1681 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1682 FILE fp = (FILE )NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1683 struct stat st;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1684 char *p;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1685 char *p1;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1686 char *parent_dir;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1687 struct extmnttab extmtab;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1688 dev_t dev = NODEV;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1689 char *parentmnt;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1690 char alt_parentmnt[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1691 struct mnttab mntref;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1692 char altzonepath[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1693 char optstr[MAX_MNTOPT_STR];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1694 int mflag = MS_OPTIONSTR;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1695 int ret;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1696 int err;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1697
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1698 fp = fopen(MNTTAB, "r");
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1699 if (fp == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1700 err = errno;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1701 be_print_err(gettext("loopback_mount_zonepath: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1702 "failed to open /etc/mnttab\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1703 return (errno_to_be_err(err));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1704 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1705
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1706 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1707 * before attempting the loopback mount of zonepath under altroot,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1708 * we need to make sure that all intermediate file systems in the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1709 * zone path are also mounted under altroot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1710 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1711
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1712 /* get the parent directory for zonepath */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1713 p = strrchr(zonepath, '/');
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1714 if (p != NULL && p != zonepath) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1715 if ((parent_dir = (char *)calloc(sizeof (char),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1716 p - zonepath + 1)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1717 ret = BE_ERR_NOMEM;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1718 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1719 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1720 (void) strlcpy(parent_dir, zonepath, p - zonepath + 1);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1721 if (stat(parent_dir, &st) < 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1722 ret = errno_to_be_err(errno);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1723 be_print_err(gettext("loopback_mount_zonepath: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1724 "failed to stat %s"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1725 parent_dir);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1726 free(parent_dir);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1727 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1728 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1729 free(parent_dir);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1730
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1731 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1732 * After the above stat call, st.st_dev contains ID of the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1733 * device over which parent dir resides.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1734 * Now, search mnttab and find mount point of parent dir device.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1735 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1736
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1737 resetmnttab(fp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1738 while (getextmntent(fp, &extmtab, sizeof (extmtab)) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1739 dev = makedev(extmtab.mnt_major, extmtab.mnt_minor);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1740 if (st.st_dev == dev && strcmp(extmtab.mnt_fstype,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1741 MNTTYPE_ZFS) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1742 p1 = strchr(extmtab.mnt_special, '/');
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1743 if (p1 == NULL \|\| strncmp(p1 + 1,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1744 BE_CONTAINER_DS_NAME, 4) != 0 \|\|
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1745 ((p1 + 5) != '/' && (p1 + 5) != '\0')) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1746 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1747 * if parent dir is in a shared file
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1748 * system, check whether it is already
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1749 * loopback mounted under altroot or
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1750 * not. It would have been mounted
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1751 * already under altroot if it is in
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1752 * a non-shared filesystem.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1753 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1754 parentmnt = strdup(extmtab.mnt_mountp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1755 (void) snprintf(alt_parentmnt,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1756 sizeof (alt_parentmnt), "%s%s",
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1757 md->altroot, parentmnt);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1758 mntref.mnt_mountp = alt_parentmnt;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1759 mntref.mnt_special = parentmnt;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1760 mntref.mnt_fstype = MNTTYPE_LOFS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1761 mntref.mnt_mntopts = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1762 mntref.mnt_time = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1763 resetmnttab(fp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1764 if (getmntany(fp, (struct mnttab *)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1765 &extmtab, &mntref) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1766 ret = loopback_mount_zonepath(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1767 parentmnt, md);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1768 if (ret != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1769 free(parentmnt);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1770 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1771 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1772 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1773 free(parentmnt);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1774 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1775 break;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1776 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1777 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1778 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1779
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1780
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1781 if (!md->shared_rw) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1782 mflag \|= MS_RDONLY;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1783 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1784
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1785 (void) snprintf(altzonepath, sizeof (altzonepath), "%s%s",
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1786 md->altroot, zonepath);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1787
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1788 /* Add the "nosub" option to the mount options string */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1789 (void) strlcpy(optstr, MNTOPT_NOSUB, sizeof (optstr));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1790
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1791 /* Loopback mount this dataset at the altroot */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1792 if (mount(zonepath, altzonepath, mflag, MNTTYPE_LOFS,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1793 NULL, 0, optstr, sizeof (optstr)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1794 err = errno;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1795 be_print_err(gettext("loopback_mount_zonepath: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1796 "failed to loopback mount %s at %s: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1797 zonepath, altzonepath, strerror(err));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1798 ret = BE_ERR_MOUNT;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1799 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1800 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1801 ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1802
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1803 done :
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1804 (void) fclose(fp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1805 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1806 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1807
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1808 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1809 * Function: unmount_shared_fs
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1810 * Description: This function iterates through the mnttab and finds all
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1811 * loopback mount entries that reside within the altroot of
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1812 * where the BE is mounted, and unmounts it.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1813 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1814 * ud - be_unmount_data_t pointer
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1815 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1816 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1817 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1818 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1819 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1820 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1821 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1822 unmount_shared_fs(be_unmount_data_t *ud)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1823 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1824 FILE *fp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1825 struct mnttab *table = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1826 struct mnttab ent;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1827 struct mnttab *entp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1828 size_t size = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1829 int read_chunk = 32;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1830 int i;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1831 int altroot_len;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1832 int err = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1833
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1834 errno = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1835
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1836 /* Read in the mnttab into a table */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1837 if ((fp = fopen(MNTTAB, "r")) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1838 err = errno;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1839 be_print_err(gettext("unmount_shared_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1840 "failed to open mnttab\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1841 return (errno_to_be_err(err));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1842 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1843
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1844 while (getmntent(fp, &ent) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1845 if (size % read_chunk == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1846 table = (struct mnttab *)realloc(table,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1847 (size + read_chunk) * sizeof (ent));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1848 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1849 entp = &table[size++];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1850
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1851 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1852 * Copy over the current mnttab entry into our table,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1853 * copying only the fields that we care about.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1854 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1855 (void) memset(entp, 0, sizeof (*entp));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1856 if ((entp->mnt_mountp = strdup(ent.mnt_mountp)) == NULL \|\|
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1857 (entp->mnt_fstype = strdup(ent.mnt_fstype)) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1858 be_print_err(gettext("unmount_shared_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1859 "memory allocation failed\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1860 return (BE_ERR_NOMEM);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1861 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1862 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1863 (void) fclose(fp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1864
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1865 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1866 * Process the mnttab entries in reverse order, looking for
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1867 * loopback mount entries mounted under our altroot.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1868 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1869 altroot_len = strlen(ud->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1870 for (i = size; i > 0; i--) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1871 entp = &table[i - 1];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1872
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1873 /* If not of type lofs, skip */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1874 if (strcmp(entp->mnt_fstype, MNTTYPE_LOFS) != 0)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1875 continue;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1876
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1877 /* If inside the altroot, unmount it */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1878 if (strncmp(entp->mnt_mountp, ud->altroot, altroot_len) == 0 &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1879 entp->mnt_mountp[altroot_len] == '/') {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1880 if (umount(entp->mnt_mountp) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1881 err = errno;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1882 if (err == EBUSY) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1883 (void) sleep(1);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1884 err = errno = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1885 if (umount(entp->mnt_mountp) != 0)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1886 err = errno;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1887 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1888 if (err != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1889 be_print_err(gettext(
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1890 "unmount_shared_fs: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1891 "failed to unmount shared file "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1892 "system %s: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1893 entp->mnt_mountp, strerror(err));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1894 return (errno_to_be_err(err));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1895 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1896 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1897 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1898 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1899
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1900 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1901 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1902
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1903 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1904 * Function: get_mountpoint_from_vfstab
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1905 * Description: This function digs into the vfstab in the given altroot,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1906 * and searches for an entry for the fs passed in. If found,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1907 * it returns the mountpoint of that fs in the mountpoint
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1908 * buffer passed in. If the get_alt_mountpoint flag is set,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1909 * it returns the mountpoint with the altroot prepended.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1910 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1911 * altroot - pointer to the alternate root location
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1912 * fs - pointer to the file system name to look for in the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1913 * vfstab in altroot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1914 * mountpoint - pointer to buffer of where the mountpoint of
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1915 * fs will be returned.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1916 * size_mp - size of mountpoint argument
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1917 * get_alt_mountpoint - flag to indicate whether or not the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1918 * mountpoint should be populated with the altroot
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1919 * prepended.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1920 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1921 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1922 * 1 - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1923 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1924 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1925 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1926 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1927 get_mountpoint_from_vfstab(char altroot, const char fs, char *mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1928 size_t size_mp, boolean_t get_alt_mountpoint)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1929 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1930 struct vfstab vp;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1931 FILE *fp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1932 char alt_vfstab[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1933
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1934 /* Generate path to alternate root vfstab */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1935 (void) snprintf(alt_vfstab, sizeof (alt_vfstab), "%s/etc/vfstab",
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1936 altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1937
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1938 /* Open alternate root vfstab */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1939 if ((fp = fopen(alt_vfstab, "r")) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1940 be_print_err(gettext("get_mountpoint_from_vfstab: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1941 "failed to open vfstab (%s)\n"), alt_vfstab);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1942 return (1);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1943 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1944
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1945 if (getvfsspec(fp, &vp, (char *)fs) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1946 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1947 * Found entry for fs, grab its mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1948 * If the flag to prepend the altroot into the mountpoint
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1949 * is set, prepend it. Otherwise, just return the mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1950 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1951 if (get_alt_mountpoint) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1952 (void) snprintf(mountpoint, size_mp, "%s%s", altroot,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1953 vp.vfs_mountp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1954 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1955 (void) strlcpy(mountpoint, vp.vfs_mountp, size_mp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1956 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1957 } else {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1958 (void) fclose(fp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1959 return (1);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1960 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1961
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1962 (void) fclose(fp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1963
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1964 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1965 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1966
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1967 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1968 * Function: fix_mountpoint_callback
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1969 * Description: This callback function is used to iterate through a BE's
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1970 * children filesystems to check if its mountpoint is currently
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1971 * set to be mounted at some specified altroot. If so, fix it by
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1972 * removing altroot from the beginning of its mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1973 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1974 * Note - There's no way to tell if a child filesystem's
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1975 * mountpoint isn't broken, and just happens to begin with
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1976 * the altroot we're looking for. In this case, this function
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1977 * will errantly remove the altroot portion from the beginning
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1978 * of this filesystem's mountpoint.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1979 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1980 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1981 * zhp - zfs_handle_t pointer to filesystem being processed.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1982 * data - altroot of where BE is to be mounted.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1983 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1984 * 0 - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1985 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1986 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1987 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1988 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1989 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1990 fix_mountpoint_callback(zfs_handle_t zhp, void data)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1991 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1992 zprop_source_t sourcetype;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1993 char source[ZFS_MAXNAMELEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1994 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1995 char *zhp_mountpoint = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1996 char *altroot = data;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1997 int ret = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1998
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	1999 /* Get dataset's mountpoint and source values */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2000 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2001 sizeof (mountpoint), &sourcetype, source, sizeof (source),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2002 B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2003 be_print_err(gettext("fix_mountpoint_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2004 "failed to get mountpoint and sourcetype for %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2005 zfs_get_name(zhp));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2006 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2007 return (BE_ERR_ZFS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2008 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2009
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2010 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2011 * If the mountpoint is not inherited and the mountpoint is not
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2012 * 'legacy', this file system potentially needs its mountpoint
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2013 * fixed.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2014 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2015 if (!(sourcetype & ZPROP_SRC_INHERITED) &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2016 strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2017
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2018 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2019 * Check if this file system's current mountpoint is
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2020 * under the altroot we're fixing it against.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2021 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2022 if (strncmp(mountpoint, altroot, strlen(altroot)) == 0 &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2023 mountpoint[strlen(altroot)] == '/') {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2024
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2025 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2026 * Get this dataset's mountpoint relative to the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2027 * altroot.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2028 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2029 zhp_mountpoint = mountpoint + strlen(altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2030
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2031 /* Fix this dataset's mountpoint value */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2032 if (zfs_prop_set(zhp,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2033 zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2034 zhp_mountpoint)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2035 be_print_err(gettext("fix_mountpoint_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2036 "failed to set mountpoint for %s to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2037 "%s: %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2038 zhp_mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2039 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2040 ret = zfs_err_to_be_err(g_zfs);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2041 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2042 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2043 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2044 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2045 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2046
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2047 /* Iterate through this dataset's children and fix them */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2048 if ((ret = zfs_iter_filesystems(zhp, fix_mountpoint_callback,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2049 altroot)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2050 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2051 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2052 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2053
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2054
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2055 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2056 return (0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2057 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2058
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2059 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2060 * Function: be_mount_root
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2061 * Description: This function mounts the root dataset of a BE at the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2062 * specified altroot.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2063 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2064 * zhp - zfs_handle_t pointer to root dataset of a BE that is
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2065 * to be mounted at altroot.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2066 * altroot - location of where to mount the BE root.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2067 * Return:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2068 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2069 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2070 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2071 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2072 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2073 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2074 be_mount_root(zfs_handle_t zhp, char altroot)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2075 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2076 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2077
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2078 /* Get mountpoint property of dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2079 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2080 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2081 be_print_err(gettext("be_mount_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2082 "get mountpoint property for %s: %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2083 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2084 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2085 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2086
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2087 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2088 * Set the canmount property for the BE's root dataset to 'noauto' just
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2089 * in case it's been set to 'on'. We do this so that when we change its
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2090 * mountpoint, zfs won't immediately try to mount it.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2091 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2092 if (zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_CANMOUNT), "noauto")
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2093 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2094 be_print_err(gettext("be_mount_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2095 "set canmount property to 'noauto' (%s): %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2096 zfs_get_name(zhp), libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2097 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2098 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2099
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2100 /* Set mountpoint for BE's root filesystem */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2101 if (zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_MOUNTPOINT), altroot)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2102 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2103 be_print_err(gettext("be_mount_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2104 "set mountpoint of %s to %s: %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2105 zfs_get_name(zhp), altroot,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2106 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2107 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2108 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2109
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2110 /* Mount the BE's root filesystem */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2111 if (zfs_mount(zhp, NULL, 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2112 be_print_err(gettext("be_mount_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2113 "mount dataset %s at %s: %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2114 altroot, libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2115 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2116 * Set this BE's root filesystem 'mountpoint' property
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2117 * back to what it was before.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2118 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2119 (void) zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2120 mountpoint);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2121 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2122 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2123
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2124 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2125 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2126
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2127 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2128 * Function: be_unmount_root
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2129 * Description: This function unmounts the root dataset of a BE, but before
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2130 * unmounting, it looks at the BE's vfstab to determine
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2131 * if the root dataset mountpoint should be left as 'legacy'
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2132 * or '/'. If the vfstab contains an entry for this root
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2133 * dataset with a mountpoint of '/', it sets the mountpoint
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2134 * property to 'legacy'.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2135 *
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2136 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2137 * zhp - zfs_handle_t pointer of the BE root dataset that
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2138 * is currently mounted.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2139 * ud - be_unmount_data_t pointer providing unmount data
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2140 * for the given BE root dataset.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2141 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2142 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2143 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2144 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2145 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2146 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2147 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2148 be_unmount_root(zfs_handle_t zhp, be_unmount_data_t ud)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2149 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2150 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2151 boolean_t is_legacy = B_FALSE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2152
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2153 /* See if this is a legacy mounted root */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2154 if (get_mountpoint_from_vfstab(ud->altroot, zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2155 mountpoint, sizeof (mountpoint), B_FALSE) == BE_SUCCESS &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2156 strcmp(mountpoint, "/") == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2157 is_legacy = B_TRUE;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2158 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2159
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2160 /* Unmount the dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2161 if (zfs_unmount(zhp, NULL, ud->force ? MS_FORCE : 0) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2162 be_print_err(gettext("be_unmount_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2163 "unmount BE root dataset %s: %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2164 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2165 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2166 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2167
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2168 /* Set canmount property for this BE's root filesystem to noauto */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2169 if (zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_CANMOUNT), "noauto")
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2170 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2171 be_print_err(gettext("be_unmount_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2172 "set canmount property for %s to 'noauto': %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2173 zfs_get_name(zhp), libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2174 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2175 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2176
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2177 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2178 * Set mountpoint for BE's root dataset back to '/', or 'legacy'
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2179 * if its a legacy mounted root.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2180 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2181 if (zfs_prop_set(zhp, zfs_prop_to_name(ZFS_PROP_MOUNTPOINT),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2182 is_legacy ? ZFS_MOUNTPOINT_LEGACY : "/") != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2183 be_print_err(gettext("be_unmount_root: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2184 "set mountpoint of %s to %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2185 is_legacy ? ZFS_MOUNTPOINT_LEGACY : "/");
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2186 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2187 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2188
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2189 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2190 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2191
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2192 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2193 * Function: fix_mountpoint
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2194 * Description: This function checks the mountpoint of an unmounted BE to make
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2195 * sure that it is set to either 'legacy' or '/'. If it's not,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2196 * then we're in a situation where an unmounted BE has some random
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2197 * mountpoint set for it. (This could happen if the system was
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2198 * rebooted while an inactive BE was mounted). This function
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2199 * attempts to fix its mountpoints.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2200 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2201 * zhp - zfs_handle_t pointer to root dataset of the BE
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2202 * whose mountpoint needs to be checked.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2203 * Return:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2204 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2205 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2206 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2207 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2208 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2209 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2210 fix_mountpoint(zfs_handle_t *zhp)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2211 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2212 be_unmount_data_t ud = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2213 char *altroot = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2214 char mountpoint[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2215 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2216
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2217 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2218 * Record what this BE's root dataset mountpoint property is currently
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2219 * set to.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2220 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2221 if (zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2222 sizeof (mountpoint), NULL, NULL, 0, B_FALSE) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2223 be_print_err(gettext("fix_mountpoint: failed to get "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2224 "mountpoint property of (%s): %s\n"), zfs_get_name(zhp),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2225 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2226 return (BE_ERR_ZFS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2227 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2228
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2229 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2230 * If the root dataset mountpoint is set to 'legacy' or '/', we're okay.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2231 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2232 if (strcmp(mountpoint, ZFS_MOUNTPOINT_LEGACY) == 0 \|\|
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2233 strcmp(mountpoint, "/") == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2234 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2235 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2236
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2237 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2238 * Iterate through this BE's children datasets and fix
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2239 * them if they need fixing.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2240 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2241 if (zfs_iter_filesystems(zhp, fix_mountpoint_callback, mountpoint)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2242 != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2243 return (BE_ERR_ZFS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2244 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2245
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2246 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2247 * The process of mounting and unmounting the root file system
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2248 * will fix its mountpoint to correctly be either 'legacy' or '/'
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2249 * since be_unmount_root will do the right thing by looking at
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2250 * its vfstab.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2251 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2252
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2253 /* Generate temporary altroot to mount the root file system */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2254 if ((ret = be_make_tmp_mountpoint(&altroot)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2255 be_print_err(gettext("fix_mountpoint: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2256 "make temporary mountpoint\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2257 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2258 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2259
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2260 /* Mount and unmount the root. */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2261 if ((ret = be_mount_root(zhp, altroot)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2262 be_print_err(gettext("fix_mountpoint: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2263 "mount BE root file system\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2264 goto cleanup;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2265 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2266 ud.altroot = altroot;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2267 if ((ret = be_unmount_root(zhp, &ud)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2268 be_print_err(gettext("fix_mountpoint: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2269 "unmount BE root file system\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2270 goto cleanup;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2271 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2272
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2273 cleanup:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2274 free(altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2275
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2276 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2277 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2278
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2279 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2280 * Function: be_mount_zones
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2281 * Description: This function finds all supported non-global zones in the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2282 * given global BE and mounts them with respect to where the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2283 * global BE is currently mounted. The global BE datasets
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2284 * (including its shared datasets) are expected to already
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2285 * be mounted.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2286 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2287 * be_zhp - zfs_handle_t pointer to the root dataset of the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2288 * global BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2289 * md - be_mount_data_t pointer to data for global BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2290 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2291 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2292 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2293 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2294 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2295 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2296 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2297 be_mount_zones(zfs_handle_t be_zhp, be_mount_data_t md)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2298 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2299 zoneBrandList_t *brands = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2300 zoneList_t zlst = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2301 char *zonename = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2302 char *zonepath = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2303 char *zonepath_ds = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2304 int k;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2305 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2306
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2307 z_set_zone_root(md->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2308
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2309 if ((brands = be_get_supported_brandlist()) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2310 be_print_err(gettext("be_mount_zones: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2311 "no supported brands\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2312 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2313 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2314
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2315 zlst = z_get_nonglobal_zone_list_by_brand(brands);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2316 if (zlst == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2317 z_free_brand_list(brands);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2318 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2319 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2320
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2321 for (k = 0; (zonename = z_zlist_get_zonename(zlst, k)) != NULL; k++) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2322 if (z_zlist_get_current_state(zlst, k) ==
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2323 ZONE_STATE_INSTALLED) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2324 zonepath = z_zlist_get_zonepath(zlst, k);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2325
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2326 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2327 * Get the dataset of this zonepath in current BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2328 * If its not a dataset, skip it.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2329 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2330 if ((zonepath_ds = be_get_ds_from_dir(zonepath))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2331 == NULL)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2332 continue;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2333
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2334 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2335 * Check if this zone is supported based on
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2336 * the dataset of its zonepath
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2337 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2338 if (!be_zone_supported(zonepath_ds)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2339 free(zonepath_ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2340 zonepath_ds = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2341 continue;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2342 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2343
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2344 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2345 * if BE's shared file systems are already mounted,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2346 * zone path dataset would have already been lofs
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2347 * mounted under altroot. Otherwise, we need to do
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2348 * it here.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2349 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2350 if (!md->shared_fs) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2351 ret = loopback_mount_zonepath(zonepath, md);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2352 if (ret != BE_SUCCESS)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2353 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2354 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2355
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2356
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2357 /* Mount this zone */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2358 ret = be_mount_one_zone(be_zhp, md, zonename,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2359 zonepath, zonepath_ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2360
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2361 free(zonepath_ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2362 zonepath_ds = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2363
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2364 if (ret != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2365 be_print_err(gettext("be_mount_zones: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2366 "failed to mount zone %s under "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2367 "altroot %s\n"), zonename, md->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2368 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2369 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2370 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2371 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2372
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2373 done:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2374 z_free_brand_list(brands);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2375 z_free_zone_list(zlst);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2376 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2377 * libinstzones caches mnttab and uses cached version for resolving lofs
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2378 * mounts when we call z_resolve_lofs. It creates the cached version
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2379 * when the first call to z_resolve_lofs happens. So, library's cached
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2380 * mnttab doesn't contain entries for lofs mounts created in the above
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2381 * loop. Because of this, subsequent calls to z_resolve_lofs would fail
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2382 * to resolve these lofs mounts. So, here we destroy library's cached
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2383 * mnttab to force its recreation when the next call to z_resolve_lofs
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2384 * happens.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2385 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2386 z_destroyMountTable();
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2387 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2388 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2389
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2390 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2391 * Function: be_unmount_zones
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2392 * Description: This function finds all supported non-global zones in the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2393 * given mounted global BE and unmounts them.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2394 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2395 * ud - unmount_data_t pointer data for the global BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2396 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2397 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2398 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2399 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2400 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2401 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2402 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2403 be_unmount_zones(be_unmount_data_t *ud)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2404 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2405 zoneBrandList_t *brands = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2406 zoneList_t zlst = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2407 char *zonename = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2408 char *zonepath = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2409 char alt_zonepath[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2410 char *zonepath_ds = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2411 int k;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2412 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2413
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2414 z_set_zone_root(ud->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2415
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2416 if ((brands = be_get_supported_brandlist()) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2417 be_print_err(gettext("be_unmount_zones: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2418 "no supported brands\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2419 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2420 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2421
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2422 zlst = z_get_nonglobal_zone_list_by_brand(brands);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2423 if (zlst == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2424 z_free_brand_list(brands);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2425 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2426 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2427
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2428 for (k = 0; (zonename = z_zlist_get_zonename(zlst, k)) != NULL; k++) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2429 if (z_zlist_get_current_state(zlst, k) ==
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2430 ZONE_STATE_INSTALLED) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2431 zonepath = z_zlist_get_zonepath(zlst, k);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2432
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2433 /* Build zone's zonepath wrt the global BE altroot */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2434 (void) snprintf(alt_zonepath, sizeof (alt_zonepath),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2435 "%s%s", ud->altroot, zonepath);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2436
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2437 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2438 * Get the dataset of this zonepath. If its not
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2439 * a dataset, skip it.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2440 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2441 if ((zonepath_ds = be_get_ds_from_dir(alt_zonepath))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2442 == NULL)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2443 continue;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2444
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2445 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2446 * Check if this zone is supported based on the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2447 * dataset of its zonepath.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2448 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2449 if (!be_zone_supported(zonepath_ds)) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2450 free(zonepath_ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2451 zonepath_ds = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2452 continue;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2453 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2454
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2455 /* Unmount this zone */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2456 ret = be_unmount_one_zone(ud, zonename, zonepath,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2457 zonepath_ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2458
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2459 free(zonepath_ds);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2460 zonepath_ds = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2461
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2462 if (ret != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2463 be_print_err(gettext("be_unmount_zones:"
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2464 " failed to unmount zone %s from "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2465 "altroot %s\n"), zonename, ud->altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2466 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2467 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2468 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2469 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2470
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2471 done:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2472 z_free_brand_list(brands);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2473 z_free_zone_list(zlst);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2474 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2475 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2476
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2477 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2478 * Function: be_mount_one_zone
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2479 * Description: This function is called to mount one zone for a given
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2480 * global BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2481 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2482 * be_zhp - zfs_handle_t pointer to the root dataset of the
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2483 * global BE
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2484 * md - be_mount_data_t pointer to data for global BE
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2485 * zonename - name of zone to mount
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2486 * zonepath - zonepath of zone to mount
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2487 * zonepath_ds - dataset for the zonepath
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2488 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2489 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2490 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2491 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2492 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2493 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2494 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2495 be_mount_one_zone(zfs_handle_t be_zhp, be_mount_data_t md, char *zonename,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2496 char zonepath, char zonepath_ds)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2497 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2498 be_mount_data_t zone_md = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2499 zfs_handle_t *zone_zhp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2500 char zone_altroot[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2501 char zoneroot[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2502 char zoneroot_ds[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2503 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2504
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2505 /* Find the active zone root dataset for this zone for this BE */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2506 if ((ret = be_find_active_zone_root(be_zhp, zonepath_ds, zoneroot_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2507 sizeof (zoneroot_ds))) == BE_ERR_ZONE_NO_ACTIVE_ROOT) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2508 be_print_err(gettext("be_mount_one_zone: did not "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2509 "find active zone root for zone %s, skipping ...\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2510 zonename);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2511 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2512 } else if (ret != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2513 be_print_err(gettext("be_mount_one_zone: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2514 "find active zone root for zone %s\n"), zonename);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2515 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2516 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2517
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2518 /* Get handle to active zoneroot dataset */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2519 if ((zone_zhp = zfs_open(g_zfs, zoneroot_ds, ZFS_TYPE_FILESYSTEM))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2520 == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2521 be_print_err(gettext("be_mount_one_zone: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2522 "open zone root dataset (%s): %s\n"), zoneroot_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2523 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2524 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2525 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2526
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2527 /* Generate string for zone's altroot path */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2528 be_make_zoneroot(zonepath, zoneroot, sizeof (zoneroot));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2529 (void) strlcpy(zone_altroot, md->altroot, sizeof (zone_altroot));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2530 (void) strlcat(zone_altroot, zoneroot, sizeof (zone_altroot));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2531
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2532 /* Build mount_data for the zone */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2533 zone_md.altroot = zone_altroot;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2534 zone_md.shared_fs = md->shared_fs;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2535 zone_md.shared_rw = md->shared_rw;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2536
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2537 /* Mount the zone's root file system */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2538 if ((ret = be_mount_zone_root(zone_zhp, &zone_md)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2539 be_print_err(gettext("be_mount_one_zone: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2540 "mount zone root file system at %s\n"), zone_altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2541 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2542 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2543
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2544 /* Iterate through zone's children filesystems */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2545 if ((ret = zfs_iter_filesystems(zone_zhp, be_mount_callback,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2546 zone_altroot)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2547 be_print_err(gettext("be_mount_one_zone: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2548 "mount zone subordinate file systems at %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2549 zone_altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2550 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2551 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2552
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2553 /* TODO: Mount all shared file systems for this zone */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2554
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2555 done:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2556 ZFS_CLOSE(zone_zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2557 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2558 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2559
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2560 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2561 * Function: be_unmount_one_zone
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2562 * Description: This function unmount one zone for a give global BE.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2563 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2564 * ud - be_unmount_data_t pointer to data for global BE
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2565 * zonename - name of zone to unmount
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2566 * zonepath - zonepath of the zone to unmount
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2567 * zonepath_ds - dataset for the zonepath
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2568 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2569 * BE_SUCCESS - Success
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2570 * be_errno_t - Failure
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2571 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2572 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2573 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2574 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2575 be_unmount_one_zone(be_unmount_data_t ud, char zonename, char *zonepath,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2576 char *zonepath_ds)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2577 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2578 be_unmount_data_t zone_ud = { 0 };
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2579 zfs_handle_t *zone_zhp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2580 char zone_altroot[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2581 char zoneroot[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2582 char zoneroot_ds[MAXPATHLEN];
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2583 int ret = BE_SUCCESS;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2584
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2585 /* Generate string for zone's alternate root path */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2586 be_make_zoneroot(zonepath, zoneroot, sizeof (zoneroot));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2587 (void) strlcpy(zone_altroot, ud->altroot, sizeof (zone_altroot));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2588 (void) strlcat(zone_altroot, zoneroot, sizeof (zone_altroot));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2589
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2590 /* Build be_unmount_data for zone */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2591 zone_ud.altroot = zone_altroot;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2592 zone_ud.force = ud->force;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2593
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2594 /* Find the mounted zone root dataset for this zone for this BE */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2595 if ((ret = be_find_mounted_zone_root(zone_altroot, zonepath_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2596 zoneroot_ds, sizeof (zoneroot_ds))) == BE_ERR_NO_MOUNTED_ZONE) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2597 be_print_err(gettext("be_unmount_one_zone: did not "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2598 "find any zone root mounted for zone %s\n"), zonename);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2599 return (BE_SUCCESS);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2600 } else if (ret != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2601 be_print_err(gettext("be_unmount_one_zone: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2602 "find mounted zone root for zone %s\n"), zonename);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2603 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2604 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2605
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2606 /* Get handle to zoneroot dataset mounted for this BE */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2607 if ((zone_zhp = zfs_open(g_zfs, zoneroot_ds, ZFS_TYPE_FILESYSTEM))
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2608 == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2609 be_print_err(gettext("be_unmount_one_zone: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2610 "open mounted zone root dataset (%s): %s\n"), zoneroot_ds,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2611 libzfs_error_description(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2612 return (zfs_err_to_be_err(g_zfs));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2613 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2614
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2615 /* TODO: Unmount all shared file systems for this zone */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2616
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2617 /* Iterate through zone's children filesystems and unmount them */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2618 if ((ret = zfs_iter_filesystems(zone_zhp, be_unmount_callback,
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2619 &zone_ud)) != 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2620 be_print_err(gettext("be_unmount_one_zone: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2621 "unmount zone subordinate file systems at %s\n"),
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2622 zone_altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2623 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2624 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2625
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2626 /* Unmount the zone's root filesystem */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2627 if ((ret = be_unmount_zone_root(zone_zhp, &zone_ud)) != BE_SUCCESS) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2628 be_print_err(gettext("be_unmount_one_zone: failed to "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2629 "unmount zone root file system at %s\n"), zone_altroot);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2630 goto done;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2631 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2632
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2633 done:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2634 ZFS_CLOSE(zone_zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2635 return (ret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2636 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2637
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2638 /*
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2639 * Function: be_get_ds_from_dir_callback
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2640 * Description: This is a callback function used to iterate all datasets
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2641 * to find the one that is currently mounted at the directory
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2642 * being searched for. If matched, the name of the dataset is
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2643 * returned in heap storage, so the caller is responsible for
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2644 * freeing it.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2645 * Parameters:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2646 * zhp - zfs_handle_t pointer to current dataset being processed.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2647 * data - dir_data_t pointer providing name of directory being
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2648 * searched for.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2649 * Returns:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2650 * 1 - This dataset is mounted at directory being searched for.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2651 * 0 - This dataset is not mounted at directory being searched for.
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2652 * Scope:
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2653 * Private
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2654 */
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2655 static int
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2656 be_get_ds_from_dir_callback(zfs_handle_t zhp, void data)
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2657 {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2658 dir_data_t *dd = data;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2659 char *mp = NULL;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2660 int zret = 0;
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2661
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2662 if (zfs_get_type(zhp) != ZFS_TYPE_FILESYSTEM) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2663 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2664 return (0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2665 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2666
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2667 if (zfs_is_mounted(zhp, &mp) && mp != NULL &&
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2668 strcmp(mp, dd->dir) == 0) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2669 if ((dd->ds = strdup(zfs_get_name(zhp))) == NULL) {
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2670 be_print_err(gettext("be_get_ds_from_dir_callback: "
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2671 "memory allocation failed\n"));
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2672 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2673 return (0);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2674 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2675 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2676 return (1);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2677 }
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2678
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2679 zret = zfs_iter_filesystems(zhp, be_get_ds_from_dir_callback, dd);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2680
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2681 ZFS_CLOSE(zhp);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2682
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2683 return (zret);
3c7681e3e323 PSARC 2010/059 SNAP BE Management Glenn Lagasse <glenn.lagasse@oracle.com> parents: diff changeset	2684 }

Mercurial > illumos > illumos-gate

annotate usr/src/lib/libbe/common/be_mount.c @ 13025:3c7681e3e323