[PATCH 2/5] binman: Show an error when a file is missing

[Simon Glass]

The recent support for missing external binaries does not show an error
message when a file is genuinely missing (i.e. it is missing but not
marked as 'external'). This means that when -m is passed to binman, it
will never report a missing file.

Fix this and add a test.

Signed-off-by: Simon Glass <s...@chromium.org>
---

 tools/binman/etype/blob.py             |  7 ++++---
 tools/binman/ftest.py                  |  7 +++++++
 tools/binman/test/173_missing_blob.dts | 14 ++++++++++++++
 3 files changed, 25 insertions(+), 3 deletions(-)
 create mode 100644 tools/binman/test/173_missing_blob.dts

diff --git a/tools/binman/etype/blob.py b/tools/binman/etype/blob.py
index c5f97c85a38..66cf243976e 100644
--- a/tools/binman/etype/blob.py
+++ b/tools/binman/etype/blob.py
@@ -37,13 +37,14 @@ class Entry_blob(Entry):
 
     def ObtainContents(self):
         self._filename = self.GetDefaultFilename()
-        self._pathname = tools.GetInputFilename(self._filename,
-                                                self.section.GetAllowMissing())
+        self._pathname = tools.GetInputFilename(
+            self._filename, self.external and self.section.GetAllowMissing())
         # Allow the file to be missing
-        if self.external and not self._pathname:
+        if not self._pathname:
             self.SetContents(b'')
             self.missing = True
             return True
+
         self.ReadBlobContents()
         return True
 
diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py
index 95b17d0b749..91225459162 100644
--- a/tools/binman/ftest.py
+++ b/tools/binman/ftest.py
@@ -3708,5 +3708,12 @@ class TestFunctional(unittest.TestCase):
         self.assertIn('Wibble test', err)
         self.assertIn('Another test', err)
 
+    def testMissingBlob(self):
+        """Test handling of a blob containing a missing file"""
+        with self.assertRaises(ValueError) as e:
+            self._DoTestFile('173_missing_blob.dts', allow_missing=True)
+        self.assertIn("Filename 'missing' not found in input path",
+                      str(e.exception))
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/tools/binman/test/173_missing_blob.dts 
b/tools/binman/test/173_missing_blob.dts
new file mode 100644
index 00000000000..ffb655a1cb4
--- /dev/null
+++ b/tools/binman/test/173_missing_blob.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+       #address-cells = <1>;
+       #size-cells = <1>;
+
+       binman {
+               blob {
+                       filename = "missing";
+               };
+       };
+};
-- 
2.28.0.526.ge36021eeef-goog