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generic: Check the stx_attributes settable by chattr
Check the stx_attributes that can be set by calling chattr. The script probes the filesystem with chattr to find out which of +a, +c, +d and +i are supported before testing combinations of attrs. Note that if a filesystem supports chattr with these, but doesn't paste the flag values into stx_attributes, the test will fail as there's no way to distinguish cleared from unset. Certain chattr flags are reflected in specific stx_attributes flags: chattr flag stx_attributes flag +a STATX_ATTR_APPEND +c STATX_ATTR_COMPRESSED +d STATX_ATTR_NODUMP +i STATX_ATTR_IMMUTABLE Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
David Howells
Eryu Guan
Executable
+155
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#! /bin/bash
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# FS QA Test 424
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#
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# Test the statx stx_attribute flags that can be set with chattr
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2017 Red Hat, Inc. All Rights Reserved.
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# Written by David Howells (dhowells@redhat.com)
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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$CHATTR_PROG -a -i $testfile
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rm -f $testfile
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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# Modify as appropriate.
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_supported_fs generic
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_supported_os IRIX Linux
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_require_test
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_require_test_program stat_test
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_require_statx
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_require_command "$CHATTR_PROG" chattr
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function check_stat () {
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$here/src/stat_test $* || echo stat_test failed
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}
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testfile=$TEST_DIR/$seq-file
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touch $testfile
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# Work out what chattrs are supported on the fs under test
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a_supported=""
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c_supported=""
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d_supported=""
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i_supported=""
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a_list="0"
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c_list="0"
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d_list="0"
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i_list="0"
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if $CHATTR_PROG +a $testfile >&/dev/null; then
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a_supported=1
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a_list="+a -a"
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fi
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if $CHATTR_PROG +c $testfile >&/dev/null; then
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c_supported=1
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c_list="+c -c"
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fi
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if $CHATTR_PROG +d $testfile >&/dev/null; then
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d_supported=1
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d_list="+d -d"
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fi
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if $CHATTR_PROG +i $testfile >&/dev/null; then
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i_supported=1
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i_list="+i -i"
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fi
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echo "a=$a_supported d=$d_supported c=$c_supported i=$i_supported" >>$seqres.full
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if [ "$a_supported$c_supported$d_supported$i_supported" = "" ]; then
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_notrun "file system doesn't support any of $CHATTR_PROG +a/+c/+d/+i"
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fi
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$CHATTR_PROG -a -c -d -i $testfile
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###############################################################################
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#
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# Now do the actual test. We can turn on and off append (a), compressed (c),
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# immutable (i) and no-dump (d) and theoretically see the output in the
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# attribute flags. The following associations can be seen:
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#
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# chattr flag stx_attributes flag
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# +a STATX_ATTR_APPEND
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# +c STATX_ATTR_COMPRESSED
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# +d STATX_ATTR_NODUMP
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# +i STATX_ATTR_IMMUTABLE
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#
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# Note, however, that if the filesystem doesn't paste this information into
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# stx_attributes, there's no way to tell the difference between cleared and
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# unset.
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#
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###############################################################################
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function try () {
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echo Trying "$*" >>$seqres.full
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$CHATTR_PROG ${a_supported:+$1} \
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${c_supported:+$2} \
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${d_supported:+$3} \
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${i_supported:+$4} \
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$testfile
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check_stat $testfile \
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${a_supported:+attr=${1/a/append}} \
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${c_supported:+attr=${2/c/compressed}} \
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${d_supported:+attr=${3/d/nodump}} \
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${i_supported:+attr=${4/i/immutable}} \
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stx_type=file \
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stx_size=0 \
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stx_rdev_major=0 \
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stx_rdev_minor=0 \
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stx_nlink=1
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}
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for a in $a_list; do
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for c in $c_list; do
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for d in $d_list; do
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for i in $i_list; do
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try $a $c $d $i
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done
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done
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done
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done
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# For tradition's sake
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echo "Silence is golden"
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# Done. We leave the success determination to the output comparator.
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status=0
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exit
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