trans/mtab: avoid firmlink loops

* trans/mtab.c (struct mtab): Add a hash table to keep track of seen
ports.
(mtab_mark_as_seen): New function that records the identity port of a
given node in the hash table and reports whether it has been there
before.
(mtab_populate): Use the new function to avoid running in circles.
(main, open_hook): Initialize hash table.
(close_hook): Free ports and destroy hash table.

0 files changed, 0 insertions, 0 deletions