int xmp_open(const char *path, struct fuse_file_info *fi);
int xmp_read(const char *path, char *buf, size_t size, off_t offset, struct fuse_file_info *fi);
int xmp_write(const char *path, const char *buf, size_t size, off_t offset, struct fuse_file_info *fi);
int xmp_open(const char *path, struct fuse_file_info *fi);
int xmp_read(const char *path, char *buf, size_t size, off_t offset, struct fuse_file_info *fi);
int xmp_write(const char *path, const char *buf, size_t size, off_t offset, struct fuse_file_info *fi);