[PATCH v2 05/10] generic/572: support non-4K Merkle tree block size

[Eric Biggers <ebiggers@kernel.org>]

From: Eric Biggers <ebiggers@google.com>

Update generic/572 to not implicitly assume that the Merkle tree block
size being used is 4096 bytes.  Also remove an unused function.

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 tests/generic/572     | 21 ++++++---------------
 tests/generic/572.out | 10 +++-------
 2 files changed, 9 insertions(+), 22 deletions(-)

diff --git a/tests/generic/572 b/tests/generic/572
index cded9ac6..d8071a34 100755
--- a/tests/generic/572
+++ b/tests/generic/572
@@ -9,7 +9,7 @@
 # - conditions for enabling verity
 # - verity files have correct contents and size
 # - can't change contents of verity files, but can change metadata
-# - can retrieve a verity file's measurement via FS_IOC_MEASURE_VERITY
+# - can retrieve a verity file's digest via FS_IOC_MEASURE_VERITY
 #
 . ./common/preamble
 _begin_fstest auto quick verity
@@ -48,15 +48,6 @@ verify_data_readable()
 	md5sum $file > /dev/null
 }
 
-verify_data_unreadable()
-{
-	local file=$1
-
-	# try both reading just the first data block, and reading until EOF
-	head -c $FSV_BLOCK_SIZE $file 2>&1 >/dev/null | filter_output
-	md5sum $file |& filter_output
-}
-
 _fsv_scratch_begin_subtest "Enabling verity on file with verity already enabled fails with EEXIST"
 _fsv_create_enable_file $fsv_file
 echo "(trying again)"
@@ -94,7 +85,7 @@ verify_data_readable $fsv_file
 _fsv_scratch_begin_subtest "Enabling verity can be interrupted"
 dd if=/dev/zero of=$fsv_file bs=1 count=0 seek=$((1 << 34)) status=none
 start_time=$(date +%s)
-$FSVERITY_PROG enable $fsv_file &
+$FSVERITY_PROG enable --block-size=$FSV_BLOCK_SIZE $fsv_file &
 sleep 0.5
 kill %1
 wait
@@ -106,7 +97,7 @@ fi
 _fsv_scratch_begin_subtest "Enabling verity on file with verity already being enabled fails with EBUSY"
 dd if=/dev/zero of=$fsv_file bs=1 count=0 seek=$((1 << 34)) status=none
 start_time=$(date +%s)
-$FSVERITY_PROG enable $fsv_file &
+$FSVERITY_PROG enable --block-size=$FSV_BLOCK_SIZE $fsv_file &
 sleep 0.5
 _fsv_enable $fsv_file |& filter_output
 kill %1
@@ -129,7 +120,7 @@ verify_data_readable $fsv_file
 
 _fsv_scratch_begin_subtest "verity file can be measured"
 _fsv_create_enable_file $fsv_file >> $seqres.full
-_fsv_measure $fsv_file
+_fsv_measure $fsv_file | _filter_fsverity_digest
 
 _fsv_scratch_begin_subtest "verity file can be renamed"
 _fsv_create_enable_file $fsv_file
@@ -170,8 +161,8 @@ verify_data_readable $fsv_file
 
 # Test files <= 1 block in size.  These are a bit of a special case since there
 # are no hash blocks; the root hash is calculated directly over the data block.
+_fsv_scratch_begin_subtest "verity on small files"
 for size in 1 $((FSV_BLOCK_SIZE - 1)) $FSV_BLOCK_SIZE; do
-	_fsv_scratch_begin_subtest "verity on $size-byte file"
 	head -c $size /dev/urandom > $fsv_orig_file
 	cp $fsv_orig_file $fsv_file
 	_fsv_enable $fsv_file
@@ -179,7 +170,7 @@ for size in 1 $((FSV_BLOCK_SIZE - 1)) $FSV_BLOCK_SIZE; do
 	rm -f $fsv_file
 done
 
-_fsv_scratch_begin_subtest "verity on 100M file (multiple levels in hash tree)"
+_fsv_scratch_begin_subtest "verity on 100MB file (multiple levels in hash tree)"
 head -c 100000000 /dev/urandom > $fsv_orig_file
 cp $fsv_orig_file $fsv_file
 _fsv_enable $fsv_file
diff --git a/tests/generic/572.out b/tests/generic/572.out
index ad381629..d703835b 100644
--- a/tests/generic/572.out
+++ b/tests/generic/572.out
@@ -39,7 +39,7 @@ bash: SCRATCH_MNT/file.fsv: Operation not permitted
 # verity file can be read
 
 # verity file can be measured
-sha256:be54121da3877f8852c65136d731784f134c4dd9d95071502e80d7be9f99b263
+sha256:<digest>
 
 # verity file can be renamed
 
@@ -58,16 +58,12 @@ sha256:be54121da3877f8852c65136d731784f134c4dd9d95071502e80d7be9f99b263
 # Trying to measure non-verity file fails with ENODATA
 ERROR: FS_IOC_MEASURE_VERITY failed on 'SCRATCH_MNT/file.fsv': No data available
 
-# verity on 1-byte file
+# verity on small files
 Files matched
-
-# verity on 4095-byte file
 Files matched
-
-# verity on 4096-byte file
 Files matched
 
-# verity on 100M file (multiple levels in hash tree)
+# verity on 100MB file (multiple levels in hash tree)
 Files matched
 
 # verity on sparse file
-- 
2.39.0