Try to use read instead of mmap for files on removable media, so that
[wine] / ole /
drwxr-xr-x   ..
-rw-r--r-- 9 .cvsignore
-rw-r--r-- 562 Makefile.in
-rw-r--r-- 129703 ole2nls.c
-rw-r--r-- 1157 uuid.c