Use kernel ucred on Dopamine. Insert with DYLD_INSERT_LIBRARIES
DYLD_INSERT_LIBRARIES=/var/jb/usr/lib/libdopaminekerneldo.dylib mount_tmpfs /cores
DYLD_INSERT_LIBRARIES=/var/jb/usr/lib/libdopaminekerneldo.dylib umount /cores
DYLD_INSERT_LIBRARIES=/var/jb/usr/lib/libdopaminekerneldo.dylib mount_bindfs -o ro /bin /cores
The kernel will panic if you try to use this on a process that calls exec/fork APIs! (HELP WANTED)