tree 214522bbf47dad2a31141b716e6e606fcf88e8b7
parent 8e9c844130f5746dd149ba1a91d8eae07d4ef8d0
author Harald Welte <laforge@osmocom.org> 1658657997 +0200
committer Harald Welte <laforge@osmocom.org> 1658751911 +0200

filesystem: We can select not just immediate parent DF but all ancestors

I didn't check the specs, but at least experience with real-world cards
(and modems) shows that it's not just permitted to select the immediate
parent DF, but all ancestors of the currently selected file.

So adjust the get_selectables() method to not just return the immediate
parent, but to recurse all the way up and report the FID of any ancestor
DF.

Change-Id: Ic9037aa9a13af6fb0c2c22b673aa4afa78575b49