[OE-Core][PATCH v2 1/3] rootfs: Add debugfs package db file copy and cleanup

[Alex Kiernan <alex.kiernan@gmail.com>]

When copying the package database files for the debugfs, add individual
file copy as well as tree copying. After the debug rootfs has been
created, cleanup the package files.

This then allows us to avoid a problem where (for rpm at least)
extraneous files in the debug rootfs would cause failures during
oe-selftest because some files existed in both regular and debugfs
images.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
---

Changes in v2:
- New in v2

 meta/lib/oe/rootfs.py | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/meta/lib/oe/rootfs.py b/meta/lib/oe/rootfs.py
index 890ba5f03984..1a48ed10b3f6 100644
--- a/meta/lib/oe/rootfs.py
+++ b/meta/lib/oe/rootfs.py
@@ -106,7 +106,7 @@ class Rootfs(object, metaclass=ABCMeta):
     def _cleanup(self):
         pass
 
-    def _setup_dbg_rootfs(self, dirs):
+    def _setup_dbg_rootfs(self, package_paths):
         gen_debugfs = self.d.getVar('IMAGE_GEN_DEBUGFS') or '0'
         if gen_debugfs != '1':
            return
@@ -122,11 +122,12 @@ class Rootfs(object, metaclass=ABCMeta):
         bb.utils.mkdirhier(self.image_rootfs)
 
         bb.note("  Copying back package database...")
-        for dir in dirs:
-            if not os.path.isdir(self.image_rootfs + '-orig' + dir):
-                continue
-            bb.utils.mkdirhier(self.image_rootfs + os.path.dirname(dir))
-            shutil.copytree(self.image_rootfs + '-orig' + dir, self.image_rootfs + dir, symlinks=True)
+        for path in package_paths:
+            bb.utils.mkdirhier(self.image_rootfs + os.path.dirname(path))
+            if os.path.isdir(self.image_rootfs + '-orig' + path):
+                shutil.copytree(self.image_rootfs + '-orig' + path, self.image_rootfs + path, symlinks=True)
+            elif os.path.isfile(self.image_rootfs + '-orig' + path):
+                shutil.copyfile(self.image_rootfs + '-orig' + path, self.image_rootfs + path)
 
         # Copy files located in /usr/lib/debug or /usr/src/debug
         for dir in ["/usr/lib/debug", "/usr/src/debug"]:
@@ -162,6 +163,13 @@ class Rootfs(object, metaclass=ABCMeta):
             bb.note("  Install extra debug packages...")
             self.pm.install(extra_debug_pkgs.split(), True)
 
+        bb.note("  Removing package database...")
+        for path in package_paths:
+            if os.path.isdir(self.image_rootfs + path):
+                shutil.rmtree(self.image_rootfs + path)
+            elif os.path.isfile(self.image_rootfs + path):
+                os.remove(self.image_rootfs + path)
+
         bb.note("  Rename debug rootfs...")
         try:
             shutil.rmtree(self.image_rootfs + '-dbg')
-- 
2.39.0