Binman interfaces allow attempts to replace any entry in the image with arbitrary data. When trying to replace sections, the changes in the section entry's data are not propagated to its child entries. This, combined with how sections rebuild their contents from its children, eventually causes the replaced contents to be silently overwritten by rebuilt contents equivalent to the original data.
Add a simple test for replacing a section that is currently failing due to this behaviour, and mark it as an expected failure. Also, raise an error when replacing a section instead of silently pretending it was replaced.
Signed-off-by: Alper Nebi Yasak alpernebiyasak@gmail.com ---
tools/binman/etype/section.py | 3 +++ tools/binman/ftest.py | 9 ++++++++ .../test/234_replace_section_simple.dts | 23 +++++++++++++++++++ 3 files changed, 35 insertions(+) create mode 100644 tools/binman/test/234_replace_section_simple.dts
diff --git a/tools/binman/etype/section.py b/tools/binman/etype/section.py index ccac658c1831..bd67238b9199 100644 --- a/tools/binman/etype/section.py +++ b/tools/binman/etype/section.py @@ -788,6 +788,9 @@ def ReadChildData(self, child, decomp=True, alt_format=None): data = new_data return data
+ def WriteData(self, data, decomp=True): + self.Raise("Replacing sections is not implemented yet") + def WriteChildData(self, child): return True
diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py index 43bec4a88841..058651cc18a0 100644 --- a/tools/binman/ftest.py +++ b/tools/binman/ftest.py @@ -5641,6 +5641,15 @@ def testReplaceFitSubentryLeafSmallerSize(self): self.assertIsNotNone(path) self.assertEqual(expected_fdtmap, fdtmap)
+ @unittest.expectedFailure + def testReplaceSectionSimple(self): + """Test replacing a simple section with arbitrary data""" + new_data = b'w' * len(COMPRESS_DATA + U_BOOT_DATA) + data, expected_fdtmap, _ = self._RunReplaceCmd( + 'section', new_data, + dts='234_replace_section_simple.dts') + self.assertEqual(new_data, data) +
if __name__ == "__main__": unittest.main() diff --git a/tools/binman/test/234_replace_section_simple.dts b/tools/binman/test/234_replace_section_simple.dts new file mode 100644 index 000000000000..c9d5c3285615 --- /dev/null +++ b/tools/binman/test/234_replace_section_simple.dts @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0+ +/dts-v1/; + +/ { + binman { + allow-repack; + + u-boot-dtb { + }; + + section { + blob { + filename = "compress"; + }; + + u-boot { + }; + }; + + fdtmap { + }; + }; +};