commit 9a0a2e9569f0d4e89cbaace40227e18c9c37fbf4
author Simon Glass <sjg@chromium.org> Sat Mar 05 20:19:03 2022 -0700
committer Simon Glass <sjg@chromium.org> Fri Mar 18 19:24:25 2022 -0600
tree 0b71229ab382eae9428093699e27085f78aeb6ed
parent ae9a45702954707619df6990bb479c98f5346408

binman: Change how faked blobs are created

At present fake blobs are created but internally an empty blob is used.
Change it to use the contents of the faked file. Also return whether the
blob was faked, in case the caller needs to know that.

Add a TODO to put fake blobs in their own directory.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>

tools/binman/binman.rst

diff --git a/tools/binman/binman.rst b/tools/binman/binman.rst
index 509fc8d..935839c 100644
--- a/tools/binman/binman.rst
+++ b/tools/binman/binman.rst
@@ -1500,7 +1500,8 @@
 - Figure out how to make Fdt support changing the node order, so that
   Node.AddSubnode() can support adding a node before another, existing node.
   Perhaps it should completely regenerate the flat tree?
-
+- Put faked files into a separate subdir and remove them on start-up, to avoid
+  seeing them as 'real' files on a subsequent run
 
 --
 Simon Glass <sjg@chromium.org>

tools/binman/entry.py

diff --git a/tools/binman/entry.py b/tools/binman/entry.py
index 786c959..9d499f0 100644
--- a/tools/binman/entry.py
+++ b/tools/binman/entry.py
@@ -999,15 +999,18 @@
             fname (str): Filename to check
 
         Returns:
-            fname (str): Filename of faked file
+            tuple:
+                fname (str): Filename of faked file
+                bool: True if the blob was faked, False if not
         """
         if self.allow_fake and not pathlib.Path(fname).is_file():
             outfname = tools.get_output_filename(os.path.basename(fname))
             with open(outfname, "wb") as out:
                 out.truncate(1024)
             self.faked = True
-            return outfname
-        return fname
+            tout.info(f"Entry '{self._node.path}': Faked file '{outfname}'")
+            return outfname, True
+        return fname, False
 
     def CheckFakedBlobs(self, faked_blobs_list):
         """Check if any entries in this section have faked external blobs

tools/binman/etype/blob.py

diff --git a/tools/binman/etype/blob.py b/tools/binman/etype/blob.py
index 25ec5d2..89f089e 100644
--- a/tools/binman/etype/blob.py
+++ b/tools/binman/etype/blob.py
@@ -41,10 +41,11 @@
             self.external and self.section.GetAllowMissing())
         # Allow the file to be missing
         if not self._pathname:
-            self._pathname = self.check_fake_fname(self._filename)
-            self.SetContents(b'')
+            self._pathname, faked = self.check_fake_fname(self._filename)
             self.missing = True
-            return True
+            if not faked:
+                self.SetContents(b'')
+                return True
 
         self.ReadBlobContents()
         return True

tools/binman/etype/blob_ext_list.py

diff --git a/tools/binman/etype/blob_ext_list.py b/tools/binman/etype/blob_ext_list.py
index 76ad32a..f00202e 100644
--- a/tools/binman/etype/blob_ext_list.py
+++ b/tools/binman/etype/blob_ext_list.py
@@ -37,7 +37,7 @@
         missing = False
         pathnames = []
         for fname in self._filenames:
-            fname = self.check_fake_fname(fname)
+            fname, _ = self.check_fake_fname(fname)
             pathname = tools.get_input_filename(
                 fname, self.external and self.section.GetAllowMissing())
             # Allow the file to be missing