If a symlink points to a subdirectory within the same directory, the parent cannot be opened

[KaiRo-at]

With the current images for the Firefox OS Flame, aafm cannot open the root directory of the device.

The issue comes down to this:

root@flame:/ # ls -l storage/
drwxrwxr-x root sdcard_rw 1970-01-01 01:00 sdcard
lrwxrwxrwx root root 1970-01-08 22:57 sdcard0 -> /storage/sdcard

So, as that symlink points into the same directory it is in, the call in https://github.com/sole/aafm/blob/master/src/Aafm.py#L134 creates an endless loop and the parent of /storage (i.e. /) cannot be opened in aafm at all.
I work around this by just locally changing that line to |is_directory = False| but that's obviously not the right fix. ;-)

[sole]

Patches welcome ;)