1#!/bin/ksh -p 2# 3# CDDL HEADER START 4# 5# The contents of this file are subject to the terms of the 6# Common Development and Distribution License (the "License"). 7# You may not use this file except in compliance with the License. 8# 9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10# or https://opensource.org/licenses/CDDL-1.0. 11# See the License for the specific language governing permissions 12# and limitations under the License. 13# 14# When distributing Covered Code, include this CDDL HEADER in each 15# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16# If applicable, add the following below this CDDL HEADER, with the 17# fields enclosed by brackets "[]" replaced with your own identifying 18# information: Portions Copyright [yyyy] [name of copyright owner] 19# 20# CDDL HEADER END 21# 22 23# 24# Copyright 2007 Sun Microsystems, Inc. All rights reserved. 25# Use is subject to license terms. 26# 27 28# 29# Copyright (c) 2016 by Delphix. All rights reserved. 30# Copyright (c) 2018, Datto, Inc. All rights reserved. 31# 32 33. $STF_SUITE/include/libtest.shlib 34. $STF_SUITE/tests/functional/cli_root/zfs_mount/zfs_mount.kshlib 35 36# 37# DESCRIPTION: 38# Invoke "zfs mount <filesystem>" with a filesystem mountpoint that is 39# identical to an existing one. It will fail with a return code of 1 40# when overlay=off. Place a file in the directory to ensure the failure. 41# Also test overlay=on (default) in which case the mount will not fail. 42# 43# STRATEGY: 44# 1. Prepare an existing mounted filesystem. 45# 2. Setup a new filesystem with overlay=off and make sure that it is 46# unmounted. 47# 3. Place a file in the mount point folder. 48# 4. Mount the new filesystem using the various combinations 49# - zfs set mountpoint=<identical path> <filesystem> 50# - zfs set mountpoint=<top path> <filesystem> 51# 5. Verify that mount failed with return code of 1. 52# 6. For Linux, also set overlay=on and verify the mount is 53# allowed. 54# 55 56verify_runnable "both" 57 58function cleanup 59{ 60 log_must force_unmount $TESTPOOL/$TESTFS 61 62 datasetexists $TESTPOOL/$TESTFS1 && \ 63 cleanup_filesystem $TESTPOOL $TESTFS1 64 65 [[ -d $TESTDIR ]] && \ 66 log_must rm -rf $TESTDIR 67 log_must zfs set mountpoint=$TESTDIR $TESTPOOL/$TESTFS 68 log_must force_unmount $TESTPOOL/$TESTFS 69 70 return 0 71} 72 73typeset -i ret=0 74 75log_assert "Verify that 'zfs $mountcmd <filesystem>'" \ 76 "where the mountpoint is identical or on top of an existing one" \ 77 "will fail with return code 1 when overlay=off." 78 79log_onexit cleanup 80 81unmounted $TESTPOOL/$TESTFS || \ 82 log_must force_unmount $TESTPOOL/$TESTFS 83 84[[ -d $TESTDIR ]] && \ 85 log_must rm -rf $TESTDIR 86 87typeset -i MAXDEPTH=3 88typeset -i depth=0 89typeset mtpt=$TESTDIR 90 91while (( depth < MAXDEPTH )); do 92 mtpt=$mtpt/$depth 93 (( depth = depth + 1)) 94done 95 96log_must zfs set mountpoint=$mtpt $TESTPOOL/$TESTFS 97log_must zfs $mountcmd $TESTPOOL/$TESTFS 98 99log_must zfs set overlay=off $TESTPOOL/$TESTFS 100if ! is_illumos; then 101 touch $mtpt/file.1 102 log_must ls -l $mtpt | grep file 103fi 104 105mounted $TESTPOOL/$TESTFS || \ 106 log_unresolved "Filesystem $TESTPOOL/$TESTFS is unmounted" 107 108log_must zfs create -o overlay=off $TESTPOOL/$TESTFS1 109 110unmounted $TESTPOOL/$TESTFS1 || \ 111 log_must force_unmount $TESTPOOL/$TESTFS1 112 113while [[ $depth -gt 0 ]] ; do 114 (( depth == MAXDEPTH )) && \ 115 log_note "Verify that 'zfs $mountcmd <filesystem>'" \ 116 "with a mountpoint that is identical to an existing one" \ 117 "will fail with return code 1." 118 119 log_must zfs set mountpoint=$mtpt $TESTPOOL/$TESTFS1 120 log_note "zfs $mountcmd $TESTPOOL/$TESTFS1" 121 122 log_mustnot zfs $mountcmd $TESTPOOL/$TESTFS1 123 124 if ! is_illumos; then 125 # Test the overlay=on feature which allows 126 # mounting of non-empty directory. 127 log_must zfs set overlay=on $TESTPOOL/$TESTFS1 128 log_must zfs $mountcmd $TESTPOOL/$TESTFS1 129 log_must force_unmount $TESTPOOL/$TESTFS1 130 log_must zfs set overlay=off $TESTPOOL/$TESTFS1 131 fi 132 133 unmounted $TESTPOOL/$TESTFS1 || \ 134 log_fail "Filesystem $TESTPOOL/$TESTFS1 is mounted." 135 136 mtpt=${mtpt%/*} 137 138 (( depth == MAXDEPTH )) && \ 139 log_note "Verify that 'zfs $mountcmd <filesystem>'" \ 140 "with a mountpoint on top of an existing one" \ 141 "will fail with return code 1." 142 (( depth = depth - 1 )) 143done 144 145log_pass "'zfs $mountcmd <filesystem>'" \ 146 "with a mountpoint that is identical or on top of an existing one" \ 147 "will fail with return code 1." 148