iconv_functions
extern struct iconv_functions *msdosfs_iconv;
#define VFS_DECLARE_ICONV(fsname) extern struct iconv_functions* fsname##_iconv;
struct iconv_functions* msdosfs_iconv;
msdosfs_iconv = new(std::nothrow) iconv_functions;
ObjectDeleter<iconv_functions> deleter(msdosfs_iconv);
extern struct iconv_functions* msdosfs_iconv;