Avoid setting permissions to 000 because they're out of sync.

git-svn-id: http://svn.savannah.nongnu.org/svn/rdiff-backup@822 2b77aa54-bcbc-44c9-a7ec-4f6cf2b41109

trunk/rdiff-backup/CHANGELOG

 New in v1.1.12 (????/??/??)
 ---------------------------
 
+Avoid setting permissions to 000 because they're out of sync. (Andrew Ferguson)
+
 listxattr() can also throw EPERM error if not supported. (Andrew Ferguson)
 
 Do something sensible if we get an IOError while trying to appropriately

trunk/rdiff-backup/rdiff_backup/rpath.py

@@ -1167,6 +1167,9 @@ class RPath(RORPath):
 			if self.hasfullperms(): oldperms = None
 			else:
 				oldperms = self.getperms()
+				if not oldperms: # self.data['perms'] is probably out of sync
+					self.setdata()
+					oldperms = self.getperms()
 				self.chmod(0700)
 			fd = os.open(self.path, os.O_RDWR)
 			if oldperms is not None: self.chmod(oldperms)