I would like to create a FUSE file system to mount tape archives. To do this correctly, I need to be able to supply replies to two pathconf keys, specifically _PC_NAME_MAX and _PC_PATH_MAX. It seems that FUSE takes the answer for the _PC_NAME_MAX key from the statfs function you provide, but I haven't found a way to set _PC_PATH_MAX. Is there a way to configure the answer to _PC_PATH_MAX? Is there in general a way to supply an answer to any pathconf call?
Further research indicates that this is not possible with FUSE at all. What a sad excuse for an API.