This case is a regression test for xfsprogs commit
f4afdcb0a ("xfs_db: clean up the salvage read callsites in set_cur()").
I found this because xfs/270 on older xfsprogs can hit this bug.
The code is pasted from xfs/270 but remove mount rw/ro test.
Signed-off-by: Yang Xu <xuyang2018.jy@xxxxxxxxxxx>
---
tests/xfs/082 | 67 +++++++++++++++++++++++++++++++++++++++++++++++
tests/xfs/082.out | 2 ++
2 files changed, 69 insertions(+)
create mode 100755 tests/xfs/082
create mode 100644 tests/xfs/082.out
diff --git a/tests/xfs/082 b/tests/xfs/082
new file mode 100755
index 00000000..7a5ece8f
--- /dev/null
+++ b/tests/xfs/082
@@ -0,0 +1,67 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2022 FUJITSU LIMITED. All rights reserved.
+#
+# FS QA Test 082
+#
+# Today xfs_db set_cur whether clean up the LIBXFS_READBUF_SALVAGE
+# call sites so that we use the return value directly instead of
+# scraping it out later.
+#
+# It is a regression test for xfsprogs
+# f4afdcb0a ("xfs_db: clean up the salvage read callsites in set_cur()").
+#
+
+. ./common/preamble
+_begin_fstest auto quick mount
+
+# Import common functions.
+. ./common/filter
+
+# real QA test starts here
+_supported_fs xfs
+# skip fs check because superblock contains unknown ro-compat features
+_require_scratch_nocheck
+# Only V5 XFS disallow rw mount/remount with unknown ro-compat features
+_require_scratch_xfs_crc
+
+_scratch_mkfs_xfs >>$seqres.full 2>&1
+
+# set the highest bit of features_ro_compat, use it as an unknown
+# feature bit. If one day this bit become known feature, please
+# change this case.
+
+ro_compat=$(_scratch_xfs_get_metadata_field "features_ro_compat" "sb 0")
+echo $ro_compat | grep -q -E '^0x[[:xdigit:]]$'
+if [[ $? != 0 ]]; then
+ echo "features_ro_compat has an invalid value."
+fi
+
+ro_compat=$(echo $ro_compat | \
+ awk '/^0x[[:xdigit:]]+/ {
+ printf("0x%x\n", or(strtonum($1), 0x80000000))
+ }')
+
+# write the new ro compat field to the superblock
+_scratch_xfs_set_metadata_field "features_ro_compat" "$ro_compat" "sb 0" \
+ > $seqres.full 2>&1
+
+# read the newly set ro compat filed for verification
+new_ro_compat=$(_scratch_xfs_get_metadata_field "features_ro_compat" "sb 0" \
+ >$seqres.full 2>&1)
+
+# verify the new ro_compat field is empty
+# Without xfsprog patch, xfs_db set_cur function doesn't return directly when
+# meeting error by using LIBXFS_READBUF_SALVAGE flag. So cache_purge will complain
+# about this.
+if [ -z $new_ro_compat ]; then
+ grep -q "cache_purge: shake on cache" $seqres.full && \
+ echo "Hit xfsprogs set_cur bug"
+ echo "Unable to get new ro compat filed"
+fi
+
+echo "Silence is golden."
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/082.out b/tests/xfs/082.out
new file mode 100644
index 00000000..6ed56cb1
--- /dev/null
+++ b/tests/xfs/082.out
@@ -0,0 +1,2 @@
+QA output created by 082
+Silence is golden.
--
2.27.0
