handle don't care regions in the system image
The system partitions has regions that we shouldn't write and can't
depend on the contents of. Adds a new script to generate a map of
these regions (using the sparse image as input), and include the map
in the package zip so it can be used when writing or patching the
system partition.
Also fixes a bug where the wrong SELinux file contexts are used when
generating incrementals.
Change-Id: Iaca5b967a3b7d1df843c7c21becc19b3f1633dad
diff --git a/tools/releasetools/build_image.py b/tools/releasetools/build_image.py
index ffda6cf..927d89a 100755
--- a/tools/releasetools/build_image.py
+++ b/tools/releasetools/build_image.py
@@ -27,6 +27,8 @@
import commands
import shutil
+import simg_map
+
def RunCommand(cmd):
""" Echo and run the given command
@@ -146,6 +148,13 @@
return False, None
return True, unsparse_image_path
+def MappedUnsparseImage(sparse_image_path, unsparse_image_path,
+ map_path, mapped_unsparse_image_path):
+ if simg_map.ComputeMap(sparse_image_path, unsparse_image_path,
+ map_path, mapped_unsparse_image_path):
+ return False
+ return True
+
def MakeVerityEnabledImage(out_file, prop_dict):
"""Creates an image that is verifiable using dm-verity.