cli_root/zfs_mount/zfs_mount_007_pos.ksh

#!/bin/ksh -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
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#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
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#
# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

#
# Copyright (c) 2016 by Delphix. All rights reserved.
#

. $STF_SUITE/tests/functional/cli_root/zfs_mount/zfs_mount.kshlib

#
# DESCRIPTION:
# The following options can be set on a temporary basis using the -o option
# without affecting the on-disk property. The original on-disk value will be
# restored when the file system is unmounted and mounted.
#
#         PROPERTY      MOUNT OPTION
#     atime         atime/noatime
#     devices       devices/nodevices
#     exec          exec/noexec
#     readonly      ro/rw
#     setuid        setuid/nosetuid
#
# STRATEGY:
#   1. Create filesystem and get origianl property value.
#   2. Using 'zfs mount -o' to set filesystem property.
#   3. Verify the property was set temporarily.
#   4. Verify it will not affect the property that is stored on disk.
#

function cleanup
{
    if ! ismounted $TESTPOOL/$TESTFS; then
        log_must zfs mount $TESTPOOL/$TESTFS
    fi
}

log_assert "Verify '-o' will set filesystem property temporarily, " \
    "without affecting the property that is stored on disk."
log_onexit cleanup

set -A properties "atime" "devices" "exec" "readonly" "setuid"

#
# Get the specified filesystem property reverse mount option.
#
# $1 filesystem
# $2 property
#
function get_reverse_option
{
    typeset fs=$1
    typeset prop=$2

    # Define property value: "reverse if value=on" "reverse if value=off"
    set -A values "noatime"   "atime" \
              "nodevices" "devices" \
              "noexec"    "exec" \
              "rw"        "ro" \
              "nosetuid"  "setuid"

    typeset -i i=0
    while (( i < ${#properties[@]} )); do
        if [[ $prop == ${properties[$i]} ]]; then
            break
        fi

        (( i += 1 ))
    done
    if (( i >= ${#properties[@]} )); then
        log_fail "Incorrect option: $prop"
    fi

    typeset val
    typeset -i ind=0
    val=$(get_prop $prop $fs) || log_fail "get_prop $prop $fs"
    if [[ $val == "on" ]]; then
        (( ind = i * 2 ))
    else
        (( ind = i * 2 + 1 ))
    fi

    echo ${values[$ind]}
}

fs=$TESTPOOL/$TESTFS
cleanup

for property in ${properties[@]}; do
    orig_val=$(get_prop $property $fs)
    (($? != 0)) && log_fail "get_prop $property $fs"

    # Set filesystem property temporarily
    reverse_opt=$(get_reverse_option $fs $property)
    log_must zfs mount -o remount,$reverse_opt $fs

    cur_val=$(get_prop $property $fs)
    (($? != 0)) && log_fail "get_prop $property $fs"

    # In LZ, a user with all zone privileges can never with "devices"
    if ! is_global_zone && [[ $property == devices ]] ; then
        if [[ $cur_val != off || $orig_val != off ]]; then
            log_fail "'devices' property shouldn't " \
                "be enabled in LZ"
        fi
    elif [[ $orig_val == $cur_val ]]; then
        log_fail "zfs mount -o remount,$reverse_opt " \
            "doesn't change property."
    fi

    # unmount & mount will revert property to the original value
    log_must zfs unmount $fs
    log_must zfs mount $fs

    cur_val=$(get_prop $property $fs)
    (($? != 0)) && log_fail "get_prop $property $fs"
    if [[ $orig_val != $cur_val ]]; then
        log_fail "zfs mount -o remount,$reverse_opt " \
            "change the property that is stored on disks"
    fi
done

log_pass "Verify '-o' set filesystem property temporarily passed."