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* [PATCH 1/2] ext4/064 encryption + casefold feature combination WITHOUT dirdata
@ 2026-04-19 18:52 Artem Blagodarenko
  2026-04-19 18:52 ` [PATCH 2/2] ext4/065 encryption + casefold + dirdata feature combination Artem Blagodarenko
  2026-05-09 17:05 ` [PATCH 1/2] ext4/064 encryption + casefold feature combination WITHOUT dirdata Zorro Lang
  0 siblings, 2 replies; 4+ messages in thread
From: Artem Blagodarenko @ 2026-04-19 18:52 UTC (permalink / raw)
  To: fstests; +Cc: adilger.kernel, tytso, Artem Blagodarenko

From: Artem Blagodarenko <artem.blagodarenko@gmail.com>

This test verifies that files created in directories with both
encryption and case-insensitive (casefold) attributes work correctly.
See ext4/065 for the same test WITH dirdata feature enabled.

Signed-off-by: Artem Blagodarenko <artem.blagodarenko@gmail.com>
---
 tests/ext4/064     | 154 +++++++++++++++++++++++++++++++++++++++++++++
 tests/ext4/064.out |  17 +++++
 2 files changed, 171 insertions(+)
 create mode 100755 tests/ext4/064
 create mode 100644 tests/ext4/064.out

diff --git a/tests/ext4/064 b/tests/ext4/064
new file mode 100755
index 00000000..6ad865a9
--- /dev/null
+++ b/tests/ext4/064
@@ -0,0 +1,154 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) 2026 The Lustre Collective.  All Rights Reserved.
+# Author: Artem Blagodarenko <ablagodarenko@thelustrecollective.com>
+#
+# FS QA Test ext4/064
+#
+# Test ext4 encryption + casefold feature combination WITHOUT dirdata.
+# This test verifies that files created in directories with both
+# encryption and case-insensitive (casefold) attributes work correctly.
+# See ext4/065 for the same test WITH dirdata feature enabled.
+#
+. ./common/preamble
+_begin_fstest auto quick encrypt casefold
+
+# get standard environment and checks
+. ./common/filter
+. ./common/encrypt
+. ./common/casefold
+. ./common/attr
+
+_exclude_fs ext2
+_exclude_fs ext3
+
+_require_scratch_nocheck
+_require_encrypted_casefold
+_require_command "$CHATTR_PROG" chattr
+_require_command "$LSATTR_PROG" lsattr
+_require_xfs_io_command "set_encpolicy"
+_require_xfs_io_command "add_enckey"
+
+# Helper to add a v2 encryption key and set policy on a directory
+_setup_encrypted_casefold_dir()
+{
+	local dir=$1
+	local raw_key=$(_generate_raw_encryption_key)
+	local keyspec=$(_add_enckey $SCRATCH_MNT "$raw_key" | awk '{print $NF}')
+	_set_encpolicy $dir $keyspec
+	_casefold_set_attr $dir
+	echo $keyspec
+}
+
+# Create a filesystem with both encrypt and casefold features
+_scratch_mkfs -O encrypt,casefold &>>$seqres.full
+_scratch_mount
+
+# Test 1: Create an encrypted + casefolded directory and verify lookups work
+echo "Test 1: Basic encrypted casefold lookup"
+mkdir $SCRATCH_MNT/test1
+_setup_encrypted_casefold_dir $SCRATCH_MNT/test1 > /dev/null
+
+# Create file with lowercase, lookup with uppercase
+echo "hello" > $SCRATCH_MNT/test1/testfile.txt
+if [ -f "$SCRATCH_MNT/test1/TESTFILE.TXT" ]; then
+	echo "Case-insensitive lookup works in encrypted dir"
+else
+	echo "FAIL: Case-insensitive lookup failed in encrypted dir"
+fi
+
+# Verify the exact name on disk is preserved
+if _casefold_check_exact_name "$SCRATCH_MNT/test1" "testfile.txt"; then
+	echo "Original filename preserved"
+else
+	echo "FAIL: Original filename not preserved"
+fi
+
+# Test 2: Create files with different case variations
+echo "Test 2: Conflicting names in encrypted casefold dir"
+mkdir $SCRATCH_MNT/test2
+_setup_encrypted_casefold_dir $SCRATCH_MNT/test2 > /dev/null
+
+echo "first" > $SCRATCH_MNT/test2/MyFile.txt
+# This should fail or overwrite since "MYFILE.TXT" is equivalent
+echo "second" > $SCRATCH_MNT/test2/MYFILE.TXT 2>/dev/null
+content=$(cat $SCRATCH_MNT/test2/myfile.txt)
+echo "Content after writes: $content"
+
+# Test 3: Unicode normalization in encrypted casefold dir
+echo "Test 3: Unicode in encrypted casefold dir"
+mkdir $SCRATCH_MNT/test3
+_setup_encrypted_casefold_dir $SCRATCH_MNT/test3 > /dev/null
+
+# Test with UTF-8 characters
+fr_file1=$(echo -e "cafe\xcc\x81.txt")
+fr_file2=$(echo -e "caf\xc3\xa9.txt")
+echo "french" > "$SCRATCH_MNT/test3/$fr_file1"
+if [ -f "$SCRATCH_MNT/test3/$fr_file2" ]; then
+	echo "Unicode normalization works in encrypted dir"
+else
+	echo "FAIL: Unicode normalization failed in encrypted dir"
+fi
+
+# Test 4: Directory operations in encrypted casefold dir
+echo "Test 4: Directory operations in encrypted casefold dir"
+mkdir $SCRATCH_MNT/test4
+_setup_encrypted_casefold_dir $SCRATCH_MNT/test4 > /dev/null
+
+mkdir $SCRATCH_MNT/test4/SubDir
+if [ -d "$SCRATCH_MNT/test4/SUBDIR" ]; then
+	echo "Directory case-insensitive lookup works"
+else
+	echo "FAIL: Directory case-insensitive lookup failed"
+fi
+
+# Test 5: Verify inheritance of casefold+encryption in subdirectories
+echo "Test 5: Inheritance of attributes"
+mkdir $SCRATCH_MNT/test5
+_setup_encrypted_casefold_dir $SCRATCH_MNT/test5 > /dev/null
+
+mkdir $SCRATCH_MNT/test5/child
+echo "data" > $SCRATCH_MNT/test5/child/file.txt
+if [ -f "$SCRATCH_MNT/test5/CHILD/FILE.TXT" ]; then
+	echo "Attributes inherited correctly"
+else
+	echo "FAIL: Attributes not inherited"
+fi
+
+# Test 6: Remove and recreate with different case
+echo "Test 6: Remove and recreate with different case"
+mkdir $SCRATCH_MNT/test6
+_setup_encrypted_casefold_dir $SCRATCH_MNT/test6 > /dev/null
+
+echo "original" > $SCRATCH_MNT/test6/RemoveMe.txt
+rm $SCRATCH_MNT/test6/REMOVEME.TXT
+echo "recreated" > $SCRATCH_MNT/test6/REMOVEME.TXT
+if _casefold_check_exact_name "$SCRATCH_MNT/test6" "REMOVEME.TXT"; then
+	echo "Recreated file has new case"
+else
+	echo "FAIL: Recreated file case incorrect"
+fi
+
+# Test 7: Hard links in encrypted casefold dir
+echo "Test 7: Hard links in encrypted casefold dir"
+mkdir $SCRATCH_MNT/test7
+_setup_encrypted_casefold_dir $SCRATCH_MNT/test7 > /dev/null
+
+echo "linkdata" > $SCRATCH_MNT/test7/original.txt
+ln $SCRATCH_MNT/test7/original.txt $SCRATCH_MNT/test7/hardlink.txt
+if [ -f "$SCRATCH_MNT/test7/HARDLINK.TXT" ]; then
+	echo "Hard link case-insensitive lookup works"
+else
+	echo "FAIL: Hard link case-insensitive lookup failed"
+fi
+
+# Cleanup and verify filesystem
+_scratch_unmount
+_check_scratch_fs
+
+echo "Encrypted casefold tests completed"
+
+# success, all done
+status=0
+exit
diff --git a/tests/ext4/064.out b/tests/ext4/064.out
new file mode 100644
index 00000000..0197e51e
--- /dev/null
+++ b/tests/ext4/064.out
@@ -0,0 +1,17 @@
+QA output created by 064
+Test 1: Basic encrypted casefold lookup
+Case-insensitive lookup works in encrypted dir
+Original filename preserved
+Test 2: Conflicting names in encrypted casefold dir
+Content after writes: second
+Test 3: Unicode in encrypted casefold dir
+Unicode normalization works in encrypted dir
+Test 4: Directory operations in encrypted casefold dir
+Directory case-insensitive lookup works
+Test 5: Inheritance of attributes
+Attributes inherited correctly
+Test 6: Remove and recreate with different case
+Recreated file has new case
+Test 7: Hard links in encrypted casefold dir
+Hard link case-insensitive lookup works
+Encrypted casefold tests completed
-- 
2.43.5


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2026-04-19 18:52 [PATCH 1/2] ext4/064 encryption + casefold feature combination WITHOUT dirdata Artem Blagodarenko
2026-04-19 18:52 ` [PATCH 2/2] ext4/065 encryption + casefold + dirdata feature combination Artem Blagodarenko
2026-05-09 17:42   ` Theodore Tso
2026-05-09 17:05 ` [PATCH 1/2] ext4/064 encryption + casefold feature combination WITHOUT dirdata Zorro Lang

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