Automounter flags for pcfs?

[Ivan Voras]

The goal is to have a USB flash drive mounted via automounter in a way 
that it auto-umounts after a while so I don't crash the system by 
pluggin it out wile mounted. My amd.map looks like this:

/defaults       type:=host;fs:=${autodir}/${rhost}/host;rhost:=${key};
*               opts:=rw,grpid,resvport,vers=3,proto=udp,nosuid,nodev

flash-s1 
type:=pcfs;dev:=/dev/da0s1;fs:=${autodir}/flash-s1;opts:=rw,longnames,-m664,-M777;

The problem is that "opts" are not passed to mount_msdosfs which results 
in all files having execute bits set, etc. Using "msdosfs" instead of 
"pcfs" makes amd fail with "unknown file system".

So, how to do this? I'll accept anything that gets the proper flags to 
mount_msdosfs.