fsveritysetup: exclude hdr_reverse_offset from measurement calculation

Signed-off-by: Eric Biggers <ebiggers@google.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/fsveritysetup.py b/fsveritysetup.py
index cc90526..69306ed 100755
--- a/fsveritysetup.py
+++ b/fsveritysetup.py
@@ -393,8 +393,7 @@ class FSVerityGenerator(object):
 
         # Finish the output file by writing the header offset field.
         hdr_offset = HeaderOffset()
-        hdr_offset.hdr_offset = len(header) + len(extensions) + ctypes.sizeof(
-            HeaderOffset)
+        hdr_offset.hdr_offset = len(header) + len(extensions)
         outfile.write(serialize_struct(hdr_offset))
 
         # Compute the fs-verity measurement.