mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Darrick J. Wong
a860a167d8
fstests only supports Linux, so get rid of this unnecessary predicate. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
135 lines
3.0 KiB
Bash
Executable File
135 lines
3.0 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2016 CTERA Networks. All Rights Reserved.
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#
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# FSQA Test No. 017
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#
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# Test constant inode numbers
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#
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# This simple test demonstrates a known issue with overlayfs:
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# - stat file A shows inode number X
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# - modify A to trigger copy up
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# - stat file A shows inode number Y != X
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#
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# Also test if d_ino of readdir entries changes after copy up
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# and if inode numbers persist after rename, drop caches and
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# mount cycle.
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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 # failure is the default!
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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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}
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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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# real QA test starts here
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_supported_fs overlay
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_require_scratch
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_require_test_program "af_unix"
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_require_test_program "t_dir_type"
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# Require redirect_dir for renaming a merge directory
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_require_scratch_feature redirect_dir
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rm -f $seqres.full
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_scratch_mkfs >>$seqres.full 2>&1
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# Create our test files.
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lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
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mkdir -p $lowerdir
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mkdir $lowerdir/dir
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touch $lowerdir/file
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ln -s $lowerdir/file $lowerdir/symlink
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mknod $lowerdir/chrdev c 1 1
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mknod $lowerdir/blkdev b 1 1
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mknod $lowerdir/fifo p
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$here/src/af_unix $lowerdir/socket
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FILES="dir file symlink chrdev blkdev fifo socket"
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# Record inode numbers in format <ino> <basename>
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function record_inode_numbers()
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{
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dir=$1
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outfile=$2
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for f in $FILES; do
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ls -id $dir/$f
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done | \
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while read ino file; do
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echo $ino `basename $file` >> $outfile
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done
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}
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# Check inode numbers match recorder inode numbers
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function check_inode_numbers()
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{
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dir=$1
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before=$2
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after=$3
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record_inode_numbers $dir $after
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# Test constant stat(2) st_ino -
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# Compare before..after - expect silence
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# We use diff -u so out.bad will tell us which stage failed
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diff -u $before $after
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# Test constant readdir(3)/getdents(2) d_ino -
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# Expect to find file by inode number
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cat $before | while read ino f; do
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$here/src/t_dir_type $dir $ino | grep -q $f || \
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echo "$f not found by ino $ino (from $before)"
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done
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}
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# Enable redirect_dir for renaming a merge directory
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_scratch_mount "-o redirect_dir=on"
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rm -f $tmp.*
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testdir=$SCRATCH_MNT/test
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mkdir -p $testdir
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# Record inode numbers before copy up
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record_inode_numbers $SCRATCH_MNT $tmp.before
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for f in $FILES; do
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# chown -h modifies all those file types
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chown -h 100 $SCRATCH_MNT/$f
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done
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# Compare inode numbers before/after copy up
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check_inode_numbers $SCRATCH_MNT $tmp.before $tmp.after_copyup
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for f in $FILES; do
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# move to another dir
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mv $SCRATCH_MNT/$f $testdir/
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done
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echo 3 > /proc/sys/vm/drop_caches
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# Compare inode numbers before/after rename and drop caches
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check_inode_numbers $testdir $tmp.after_copyup $tmp.after_move
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# Verify that the inode numbers survive a mount cycle
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_scratch_cycle_mount "redirect_dir=on"
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# Compare inode numbers before/after mount cycle
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check_inode_numbers $testdir $tmp.after_move $tmp.after_cycle
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echo "Silence is golden"
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status=0
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exit
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