[PATCH 08/14] xfs: add parent pointer test

["Darrick J. Wong" <djwong@kernel.org>]

From: Allison Henderson <allison.henderson@oracle.com>

Add a test to verify basic parent pointers operations (create, move, link,
unlink, rename, overwrite).

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Signed-off-by: Catherine Hoang <catherine.hoang@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 doc/group-names.txt |    1 +
 tests/xfs/851       |  101 +++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/851.out   |   59 ++++++++++++++++++++++++++++++
 3 files changed, 161 insertions(+)
 create mode 100755 tests/xfs/851
 create mode 100644 tests/xfs/851.out


diff --git a/doc/group-names.txt b/doc/group-names.txt
index 819039e311..87e0933103 100644
--- a/doc/group-names.txt
+++ b/doc/group-names.txt
@@ -83,6 +83,7 @@ nfs4_acl		NFSv4 access control lists
 nonsamefs		overlayfs layers on different filesystems
 online_repair		online repair functionality tests
 other			dumping ground, do not add more tests to this group
+parent			Parent pointer tests
 pattern			specific IO pattern tests
 perms			access control and permission checking
 pipe			pipe functionality
diff --git a/tests/xfs/851 b/tests/xfs/851
new file mode 100755
index 0000000000..27870ec05a
--- /dev/null
+++ b/tests/xfs/851
@@ -0,0 +1,101 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2022, Oracle and/or its affiliates.  All Rights Reserved.
+#
+# FS QA Test 851
+#
+# simple parent pointer test
+#
+
+. ./common/preamble
+_begin_fstest auto quick parent
+
+# get standard environment, filters and checks
+. ./common/parent
+
+# Modify as appropriate
+_supported_fs xfs
+_require_scratch
+_require_xfs_sysfs debug/larp
+_require_xfs_parent
+_require_xfs_io_command "parent"
+
+# real QA test starts here
+
+# Create a directory tree using a protofile and
+# make sure all inodes created have parent pointers
+
+protofile=$tmp.proto
+
+cat >$protofile <<EOF
+DUMMY1
+0 0
+: root directory
+d--777 3 1
+: a directory
+testfolder1 d--755 3 1
+file1 ---755 3 1 /dev/null
+$
+: back in the root
+testfolder2 d--755 3 1
+file2 ---755 3 1 /dev/null
+: done
+$
+EOF
+
+_scratch_mkfs -f -n parent=1 -p $protofile >>$seqres.full 2>&1 \
+	|| _fail "mkfs failed"
+_check_scratch_fs
+
+_scratch_mount >>$seqres.full 2>&1 \
+	|| _fail "mount failed"
+
+testfolder1="testfolder1"
+testfolder2="testfolder2"
+file1="file1"
+file2="file2"
+file3="file3"
+file1_ln="file1_link"
+
+echo ""
+# Create parent pointer test
+_verify_parent "$testfolder1" "$file1" "$testfolder1/$file1"
+
+echo ""
+# Move parent pointer test
+mv $SCRATCH_MNT/$testfolder1/$file1 $SCRATCH_MNT/$testfolder2/$file1
+_verify_parent "$testfolder2" "$file1" "$testfolder2/$file1"
+
+echo ""
+# Hard link parent pointer test
+ln $SCRATCH_MNT/$testfolder2/$file1 $SCRATCH_MNT/$testfolder1/$file1_ln
+_verify_parent "$testfolder1" "$file1_ln" "$testfolder1/$file1_ln"
+_verify_parent "$testfolder1" "$file1_ln" "$testfolder2/$file1"
+_verify_parent "$testfolder2" "$file1"    "$testfolder1/$file1_ln"
+_verify_parent "$testfolder2" "$file1"    "$testfolder2/$file1"
+
+echo ""
+# Remove hard link parent pointer test
+ino="$(stat -c '%i' $SCRATCH_MNT/$testfolder2/$file1)"
+rm $SCRATCH_MNT/$testfolder2/$file1
+_verify_parent "$testfolder1" "$file1_ln" "$testfolder1/$file1_ln"
+_verify_no_parent "$file1" "$ino" "$testfolder1/$file1_ln"
+
+echo ""
+# Rename parent pointer test
+ino="$(stat -c '%i' $SCRATCH_MNT/$testfolder1/$file1_ln)"
+mv $SCRATCH_MNT/$testfolder1/$file1_ln $SCRATCH_MNT/$testfolder1/$file2
+_verify_parent "$testfolder1" "$file2" "$testfolder1/$file2"
+_verify_no_parent "$file1_ln" "$ino" "$testfolder1/$file2"
+
+echo ""
+# Over write parent pointer test
+touch $SCRATCH_MNT/$testfolder2/$file3
+_verify_parent "$testfolder2" "$file3" "$testfolder2/$file3"
+ino="$(stat -c '%i' $SCRATCH_MNT/$testfolder2/$file3)"
+mv -f $SCRATCH_MNT/$testfolder2/$file3 $SCRATCH_MNT/$testfolder1/$file2
+_verify_parent "$testfolder1" "$file2" "$testfolder1/$file2"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/851.out b/tests/xfs/851.out
new file mode 100644
index 0000000000..c375ba5f00
--- /dev/null
+++ b/tests/xfs/851.out
@@ -0,0 +1,59 @@
+QA output created by 851
+
+*** testfolder1 OK
+*** testfolder1/file1 OK
+*** testfolder1/file1 OK
+*** Verified parent pointer: name:file1, namelen:5
+*** Parent pointer OK for child testfolder1/file1
+
+*** testfolder2 OK
+*** testfolder2/file1 OK
+*** testfolder2/file1 OK
+*** Verified parent pointer: name:file1, namelen:5
+*** Parent pointer OK for child testfolder2/file1
+
+*** testfolder1 OK
+*** testfolder1/file1_link OK
+*** testfolder1/file1_link OK
+*** Verified parent pointer: name:file1_link, namelen:10
+*** Parent pointer OK for child testfolder1/file1_link
+*** testfolder1 OK
+*** testfolder2/file1 OK
+*** testfolder1/file1_link OK
+*** Verified parent pointer: name:file1_link, namelen:10
+*** Parent pointer OK for child testfolder2/file1
+*** testfolder2 OK
+*** testfolder1/file1_link OK
+*** testfolder2/file1 OK
+*** Verified parent pointer: name:file1, namelen:5
+*** Parent pointer OK for child testfolder1/file1_link
+*** testfolder2 OK
+*** testfolder2/file1 OK
+*** testfolder2/file1 OK
+*** Verified parent pointer: name:file1, namelen:5
+*** Parent pointer OK for child testfolder2/file1
+
+*** testfolder1 OK
+*** testfolder1/file1_link OK
+*** testfolder1/file1_link OK
+*** Verified parent pointer: name:file1_link, namelen:10
+*** Parent pointer OK for child testfolder1/file1_link
+*** testfolder1/file1_link OK
+
+*** testfolder1 OK
+*** testfolder1/file2 OK
+*** testfolder1/file2 OK
+*** Verified parent pointer: name:file2, namelen:5
+*** Parent pointer OK for child testfolder1/file2
+*** testfolder1/file2 OK
+
+*** testfolder2 OK
+*** testfolder2/file3 OK
+*** testfolder2/file3 OK
+*** Verified parent pointer: name:file3, namelen:5
+*** Parent pointer OK for child testfolder2/file3
+*** testfolder1 OK
+*** testfolder1/file2 OK
+*** testfolder1/file2 OK
+*** Verified parent pointer: name:file2, namelen:5
+*** Parent pointer OK for child testfolder1/file2