From 9157237c8937720c2d60b7eb9de739c9b8fe9dee Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@google.com>
Date: Wed, 18 Apr 2018 13:09:10 -0700
Subject: generic: test using fs-verity and fscrypt simultaneously

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 tests/generic/906     | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/generic/906.out | 12 +++++++
 tests/generic/group   |  1 +
 3 files changed, 112 insertions(+)
 create mode 100755 tests/generic/906
 create mode 100644 tests/generic/906.out

diff --git a/tests/generic/906 b/tests/generic/906
new file mode 100755
index 0000000000..ec11304b88
--- /dev/null
+++ b/tests/generic/906
@@ -0,0 +1,99 @@
+#! /bin/bash
+# FS QA Test generic/906
+#
+# Test using fs-verity and fscrypt simultaneously
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2018 Google, Inc.  All Rights Reserved.
+#
+# Author: Eric Biggers <ebiggers@google.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#-----------------------------------------------------------------------
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+	cd /
+	rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/verity
+. ./common/encrypt
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+_supported_fs generic
+_supported_os Linux
+_require_scratch_verity
+_require_scratch_encryption
+_require_xfs_io_command "set_encpolicy"
+_require_command "$KEYCTL_PROG" keyctl
+
+_scratch_mkfs_encrypted_verity &>> $seqres.full
+_scratch_mount
+
+fsv_orig_file=$tmp.file
+edir=$SCRATCH_MNT/edir
+fsv_file=$edir/file.fsv
+
+# Set up an encrypted directory.
+_new_session_keyring
+keydesc=$(_generate_encryption_key)
+mkdir $edir
+$XFS_IO_PROG -c "set_encpolicy $keydesc" $edir
+
+# Set up an fs-verity file within the encrypted directory.
+# Verity that it actually has an encryption policy.
+head -c 100000 /dev/zero > $fsv_orig_file
+measurement=$(_fsv_setup_file $fsv_orig_file $fsv_file)
+$FSVERITY_PROG enable $fsv_file
+echo
+$XFS_IO_PROG -r -c "get_encpolicy" $fsv_file |& _filter_scratch \
+	| sed 's/Master key descriptor:.*/Master key descriptor: 0000000000000000/'
+echo
+
+# Verify that the file contents are as expected.  This should be going through
+# both the decryption and verity I/O paths.
+$FSVERITY_PROG set_measurement $fsv_file $measurement
+cmp $fsv_orig_file $fsv_file && echo "Files matched"
+
+# Just in case, try again after a mount cycle to empty the page cache.
+_scratch_cycle_mount
+$FSVERITY_PROG set_measurement $fsv_file $measurement
+cmp $fsv_orig_file $fsv_file && echo "Files matched"
+
+# Corrupt some bytes as a sanity check that fs-verity is really working.
+# This also verifies that the data on-disk is really encrypted, since otherwise
+# the data being written here would be identical to the old data.
+head -c 1000 /dev/zero | _fsv_corrupt_bytes $fsv_file 50000
+$FSVERITY_PROG set_measurement $fsv_file $measurement
+md5sum $fsv_file |& _filter_scratch
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/906.out b/tests/generic/906.out
new file mode 100644
index 0000000000..69c51eab15
--- /dev/null
+++ b/tests/generic/906.out
@@ -0,0 +1,12 @@
+QA output created by 906
+
+Encryption policy for SCRATCH_MNT/edir/file.fsv:
+	Policy version: 0
+	Master key descriptor: 0000000000000000
+	Contents encryption mode: 1 (AES-256-XTS)
+	Filenames encryption mode: 4 (AES-256-CTS)
+	Flags: 0x02
+
+Files matched
+Files matched
+md5sum: SCRATCH_MNT/edir/file.fsv: Input/output error
diff --git a/tests/generic/group b/tests/generic/group
index 5269be32f0..7d32e245e4 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -492,3 +492,4 @@
 903 auto quick verity
 904 auto quick verity
 905 auto quick verity
+906 auto quick verity encrypt
-- 
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