+#! /bin/bash
+# FS QA Test No. 453
+#
+# Create a directory with multiple filenames that all appear the same
+# (in unicode, anyway) but point to different inodes. In theory all
+# Linux filesystems should allow this (filenames are a sequence of
+# arbitrary bytes) even if the user implications are horrifying.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2017, Oracle and/or its affiliates. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#-----------------------------------------------------------------------
+
+seq=`basename "$0"`
+seqres="$RESULT_DIR/$seq"
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+
+_supported_os Linux
+_require_scratch
+
+echo "Format and mount"
+_scratch_mkfs > $seqres.full 2>&1
+_scratch_mount >> $seqres.full 2>&1
+
+testdir="${SCRATCH_MNT}/test-${seq}"
+mkdir $testdir
+
+hexbytes() {
+ echo -n "$1" | od -tx1 -w99999 | head -n1 | sed -e 's/^0* //g'
+}
+
+setf() {
+ key="$(echo -e "$1")"
+ value="$2"
+
+ echo "${value}" > "${testdir}/${key}"
+ echo "Storing ${key} ($(hexbytes "${key}")) -> ${value}" >> $seqres.full
+}
+
+testf() {
+ key="$(echo -e "$1")"
+ value="$2"
+ fname="${testdir}/${key}"
+
+ echo "Testing ${key} ($(hexbytes "${key}")) -> ${value}" >> $seqres.full
+
+ if [ ! -e "${fname}" ]; then
+ echo "Key ${key} does not exist for ${value} test??"
+ return
+ fi
+
+ actual_value="$(cat "${fname}")"
+ if [ "${actual_value}" != "${value}" ]; then
+ echo "Key ${key} has value ${value}, expected ${actual_value}."
+ fi
+}
+
+filter_scrub() {
+ grep 'Unicode' | sed -e 's/^.*Duplicate/Duplicate/g'
+}
+
+echo "Create files"
+# These two render the same
+setf "french_caf\xc3\xa9.txt" "NFC"
+setf "french_cafe\xcc\x81.txt" "NFD"
+
+# These two may have different widths
+setf "chinese_\xef\xbd\xb6.txt" "NFKC1"
+setf "chinese_\xe3\x82\xab.txt" "NFKC2"
+
+# Same point, different byte representations in NFC/NFD/NFKC/NFKD
+setf "greek_\xcf\x93.txt" "GREEK UPSILON WITH ACUTE AND HOOK SYMBOL, NFC"
+setf "greek_\xcf\x92\xcc\x81.txt" "GREEK UPSILON WITH ACUTE AND HOOK SYMBOL, NFD"
+setf "greek_\xce\x8e.txt" "GREEK UPSILON WITH ACUTE AND HOOK SYMBOL, NFKC"
+setf "greek_\xce\xa5\xcc\x81.txt" "GREEK UPSILON WITH ACUTE AND HOOK SYMBOL, NFKD"
+
+# Arabic code point can expand into a muuuch longer series
+setf "arabic_\xef\xb7\xba.txt" "ARABIC LIGATURE SALLALLAHOU ALAYHE WASALLAM, NFC"
+setf "arabic_\xd8\xb5\xd9\x84\xd9\x89\x20\xd8\xa7\xd9\x84\xd9\x84\xd9\x87\x20\xd8\xb9\xd9\x84\xd9\x8a\xd9\x87\x20\xd9\x88\xd8\xb3\xd9\x84\xd9\x85.txt" "ARABIC LIGATURE SALLALLAHOU ALAYHE WASALLAM, NFKC"
+
+# Fake slash?
+setf "urk\xc0\xafmoo" "FAKESLASH"
+
+ls -la $testdir >> $seqres.full
+
+echo "Test files"
+testf "french_caf\xc3\xa9.txt" "NFC"
+testf "french_cafe\xcc\x81.txt" "NFD"
+
+testf "chinese_\xef\xbd\xb6.txt" "NFKC1"
+testf "chinese_\xe3\x82\xab.txt" "NFKC2"
+
+testf "greek_\xcf\x93.txt" "GREEK UPSILON WITH ACUTE AND HOOK SYMBOL, NFC"
+testf "greek_\xcf\x92\xcc\x81.txt" "GREEK UPSILON WITH ACUTE AND HOOK SYMBOL, NFD"
+testf "greek_\xce\x8e.txt" "GREEK UPSILON WITH ACUTE AND HOOK SYMBOL, NFKC"
+testf "greek_\xce\xa5\xcc\x81.txt" "GREEK UPSILON WITH ACUTE AND HOOK SYMBOL, NFKD"
+
+testf "arabic_\xef\xb7\xba.txt" "ARABIC LIGATURE SALLALLAHOU ALAYHE WASALLAM, NFC"
+testf "arabic_\xd8\xb5\xd9\x84\xd9\x89\x20\xd8\xa7\xd9\x84\xd9\x84\xd9\x87\x20\xd8\xb9\xd9\x84\xd9\x8a\xd9\x87\x20\xd9\x88\xd8\xb3\xd9\x84\xd9\x85.txt" "ARABIC LIGATURE SALLALLAHOU ALAYHE WASALLAM, NFKC"
+
+testf "urk\xc0\xafmoo" "FAKESLASH"
+
+echo "Uniqueness of inodes?"
+stat -c '%i' "${testdir}/"* | sort | uniq -c | while read nr inum; do
+ if [ "${nr}" -gt 1 ]; then
+ echo "${nr} ${inum}"
+ fi
+done
+
+echo "Test XFS online scrub, if applicable"
+
+# Only run this on xfs if xfs_scrub is available and has the unicode checker
+check_xfs_scrub() {
+ # Ignore non-XFS fs or no scrub program...
+ if [ "${FSTYP}" != "xfs" ] || [ ! -x "${XFS_SCRUB_PROG}" ]; then
+ return 1
+ fi
+
+ # We only care if xfs_scrub has unicode string support...
+ if ! type ldd > /dev/null 2>&1 || \
+ ! ldd "${XFS_SCRUB_PROG}" | grep -q libunistring; then
+ return 1
+ fi
+
+ # Does the ioctl work?
+ if $XFS_IO_PROG -x -c "scrub test 0" $SCRATCH_MNT 2>&1 | \
+ grep -q "Inappropriate ioctl"; then
+ return 1
+ fi
+
+ return 0
+}
+
+if check_xfs_scrub; then
+ output="$(${XFS_SCRUB_PROG} -n "${SCRATCH_MNT}" 2>&1 | filter_scrub)"
+ echo "${output}" | grep -q "french_" || echo "No complaints about french e accent?"
+ echo "${output}" | grep -q "chinese_" || echo "No complaints about chinese width-different?"
+ echo "${output}" | grep -q "greek_" || echo "No complaints about greek letter mess?"
+ echo "${output}" | grep -q "arabic_" || echo "No complaints about arabic expanded string?"
+ echo "Actual xfs_scrub output:" >> $seqres.full
+ echo "${output}" >> $seqres.full
+fi
+
+# success, all done
+status=0
+exit
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