mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Miklos Szeredi
c0ae9162ca
Test program expects only immutable on lower layer (test failure), but does not expect the immutable file to be on the upper layer. The later case is actually what *should* happen, except overlayfs didn't properly implement this case yet (but is now in the works). Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
88 lines
2.4 KiB
Bash
Executable File
88 lines
2.4 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test 040
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#
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# chattr with [iap..] attributes open file for read-only and
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# invoke ioctl(). If we chattr a lower file in overlay, it
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# will get the lower file but not trigger copy-up, so ioctl()
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# lead to modification of that lower file.
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#
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# Upstream Commit 7c6893e3c9ab ("ovl: don't allow writing
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# ioctl on lower layer") return EPERM for this case to avoid
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# this issue.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2017 Huawei. All Rights Reserved.
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# Author: zhangyi (F) <yi.zhang@huawei.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 # 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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$CHATTR_PROG -i $lowerdir/foo > /dev/null 2>&1
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$CHATTR_PROG -i $upperdir/foo > /dev/null 2>&1
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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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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs overlay
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_supported_os Linux
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_require_scratch
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_require_chattr i
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# remove all files from previous runs
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_scratch_mkfs
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# prepare lower test file
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lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
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upperdir=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER
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mkdir -p $lowerdir
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touch $lowerdir/foo
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# mounting overlay
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_scratch_mount
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# Try to add immutable attributes in overlay, it will
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# open file for read-only and invoke ioctl(), it should not
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# modify lower origin file.
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$CHATTR_PROG +i $SCRATCH_MNT/foo > /dev/null 2>&1
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$UMOUNT_PROG $SCRATCH_MNT
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# touching origin file in lower, should succeed
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touch $lowerdir/foo
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# success, all done
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echo "Silence is golden"
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status=0
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exit
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