Changes to prevent raising IOError if xattr cannot read attributes (#743)

Author: joachimmetz

config/dpkg/changelog

@@ -1,5 +1,5 @@
-dfvfs (20230527-1) unstable; urgency=low
+dfvfs (20230531-1) unstable; urgency=low
 
   * Auto-generated
 
- -- Log2Timeline maintainers <[email protected]>  Sat, 27 May 2023 08:06:14 +0200
+ -- Log2Timeline maintainers <[email protected]>  Wed, 31 May 2023 18:17:37 +0200

dfvfs/__init__.py

@@ -6,4 +6,4 @@
 storage media types and file formats.
 """
 
-__version__ = '20230527'
+__version__ = '20230531'

dfvfs/vfs/os_file_entry.py

@@ -108,13 +108,21 @@ def _GetAttributes(self):
       self._attributes = []
 
       if xattr:
-        for name in xattr.listxattr(self._location):
+        try:
+          attribute_names = list(xattr.listxattr(self._location))
+        except IOError:
+          attribute_names = []
+
+        for name in attribute_names:
           if isinstance(name, bytes):
             name = os.fsdecode(name)
 
-          extended_attribute = os_attribute.OSExtendedAttribute(
-              self._location, name)
-          self._attributes.append(extended_attribute)
+          try:
+            extended_attribute = os_attribute.OSExtendedAttribute(
+                self._location, name)
+            self._attributes.append(extended_attribute)
+          except IOError:
+            pass
 
     return self._attributes