2016-09-07 17:57:15 +08:00
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#! /bin/bash
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2018-06-09 11:35:42 +10:00
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (c) 2016 Red Hat Inc. All Rights Reserved.
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#
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2016-09-07 17:57:15 +08:00
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# FS QA Test 378
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#
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# Simple permission check on hard links.
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#
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# Overlayfs had a bug that hardlinks don't share inode, if chmod/chown/etc.
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# is performed on one of the links then the inode belonging to the other
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# one won't be updated. The following patch fixed this issue
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#
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# 51f7e52 ovl: share inode for hard link
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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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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs generic
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_require_test
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_require_user
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2020-04-15 15:20:33 -05:00
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_require_hardlinks
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2016-09-07 17:57:15 +08:00
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# Setup testfile and its hardlink
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testfile=$TEST_DIR/testfile.$seq
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testlink=$testfile.hardlink
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rm -f $testfile $testlink
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echo "You should not see this" >$testfile
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ln $testfile $testlink
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# remove read permission from testfile and unprivileged user should have no
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# permission to read testfile and hardlink
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chmod -r $testfile
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_user_do "cat $testfile"
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_user_do "cat $testlink"
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# success, all done
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status=0
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exit
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