generic/577: support non-4K Merkle tree block size

Update generic/577 to not implicitly assume that the Merkle tree block
size being used is 4096 bytes.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>

2 files changed, 17 insertions, 15 deletions

diff --git a/tests/generic/577 b/tests/generic/577
index 85d680df..bbbfdb0a 100755
--- a/tests/generic/577
+++ b/tests/generic/577
@@ -38,6 +38,11 @@ sigfile=$tmp.sig
 otherfile=$SCRATCH_MNT/otherfile
 othersigfile=$tmp.othersig
 
+sign()
+{
+	_fsv_sign "$@" | _filter_scratch | _filter_fsverity_digest
+}
+
 # Setup
 
 echo -e "\n# Generating certificates and private keys"
@@ -57,14 +62,13 @@ _enable_fsverity_signatures
 echo -e "\n# Generating file and signing it for fs-verity"
 head -c 100000 /dev/zero > $fsv_orig_file
 for suffix in '' '.2'; do
-	_fsv_sign $fsv_orig_file $sigfile$suffix --key=$keyfile$suffix \
-		--cert=$certfile$suffix | _filter_scratch
+	sign $fsv_orig_file $sigfile$suffix --key=$keyfile$suffix \
+		--cert=$certfile$suffix
 done
 
 echo -e "\n# Signing a different file for fs-verity"
 head -c 100000 /dev/zero | tr '\0' 'X' > $otherfile
-_fsv_sign $otherfile $othersigfile --key=$keyfile --cert=$certfile \
-	| _filter_scratch
+sign $otherfile $othersigfile --key=$keyfile --cert=$certfile
 
 # Actual tests
 
@@ -106,16 +110,15 @@ _fsv_enable $fsv_file --signature=$tmp.malformed_sig |& _filter_scratch
 
 echo -e "\n# Testing salt"
 reset_fsv_file
-_fsv_sign $fsv_orig_file $sigfile.salted --key=$keyfile --cert=$certfile \
-	--salt=abcd | _filter_scratch
+sign $fsv_orig_file $sigfile.salted --key=$keyfile --cert=$certfile --salt=abcd
 _fsv_enable $fsv_file --signature=$sigfile.salted --salt=abcd
 cmp $fsv_file $fsv_orig_file
 
 echo -e "\n# Testing non-default hash algorithm"
 if _fsv_can_enable $fsv_file --hash-alg=sha512; then
 	reset_fsv_file
-	_fsv_sign $fsv_orig_file $sigfile.sha512 --key=$keyfile \
-		--cert=$certfile --hash-alg=sha512 > /dev/null
+	sign $fsv_orig_file $sigfile.sha512 --key=$keyfile --cert=$certfile \
+		--hash-alg=sha512 > /dev/null
 	_fsv_enable $fsv_file --signature=$sigfile.sha512 --hash-alg=sha512
 	cmp $fsv_file $fsv_orig_file
 fi
@@ -123,8 +126,7 @@ fi
 echo -e "\n# Testing empty file"
 rm -f $fsv_file
 echo -n > $fsv_file
-_fsv_sign $fsv_file $sigfile.emptyfile --key=$keyfile --cert=$certfile | \
-		_filter_scratch
+sign $fsv_file $sigfile.emptyfile --key=$keyfile --cert=$certfile
 _fsv_enable $fsv_file --signature=$sigfile.emptyfile
 
 # success, all done
diff --git a/tests/generic/577.out b/tests/generic/577.out
index 0ca417c4..4f360d57 100644
--- a/tests/generic/577.out
+++ b/tests/generic/577.out
@@ -9,11 +9,11 @@ QA output created by 577
 # Enabling fs.verity.require_signatures
 
 # Generating file and signing it for fs-verity
-Signed file 'SCRATCH_MNT/file' (sha256:ecabbfca4efd69a721be824965da10d27900b109549f96687b35a4d91d810dac)
-Signed file 'SCRATCH_MNT/file' (sha256:ecabbfca4efd69a721be824965da10d27900b109549f96687b35a4d91d810dac)
+Signed file 'SCRATCH_MNT/file' (sha256:<digest>)
+Signed file 'SCRATCH_MNT/file' (sha256:<digest>)
 
 # Signing a different file for fs-verity
-Signed file 'SCRATCH_MNT/otherfile' (sha256:b2a419c5a8c767a78c6275d6729794bf51e52ddf8713e31d12a93d61d961f49f)
+Signed file 'SCRATCH_MNT/otherfile' (sha256:<digest>)
 
 # Enabling verity with valid signature (should succeed)
 
@@ -33,9 +33,9 @@ ERROR: FS_IOC_ENABLE_VERITY failed on 'SCRATCH_MNT/file.fsv': Key was rejected b
 ERROR: FS_IOC_ENABLE_VERITY failed on 'SCRATCH_MNT/file.fsv': Bad message
 
 # Testing salt
-Signed file 'SCRATCH_MNT/file' (sha256:1cb173bcd199133eb80e9ea4f0f741001b9e73227aa8812685156f2bc8ff45f5)
+Signed file 'SCRATCH_MNT/file' (sha256:<digest>)
 
 # Testing non-default hash algorithm
 
 # Testing empty file
-Signed file 'SCRATCH_MNT/file.fsv' (sha256:3d248ca542a24fc62d1c43b916eae5016878e2533c88238480b26128a1f1af95)
+Signed file 'SCRATCH_MNT/file.fsv' (sha256:<digest>)