extern int SYSIO_INTERFACE_NAME(fcntl)(int fd, int cmd, ...);
extern int SYSIO_INTERFACE_NAME(fcntl64)(int fd, int cmd, ...);
extern int SYSIO_INTERFACE_NAME(fstat)(int fd, struct stat *buf);
extern int SYSIO_INTERFACE_NAME(fcntl)(int fd, int cmd, ...);
extern int SYSIO_INTERFACE_NAME(fcntl64)(int fd, int cmd, ...);
extern int SYSIO_INTERFACE_NAME(fstat)(int fd, struct stat *buf);