extern int _sysio_fd_set(struct file *fil, int fd, int force);
extern int _sysio_fd_dup(int oldfd, int newfd, int force);
extern int _sysio_fd_close_all(void);
extern int _sysio_fd_set(struct file *fil, int fd, int force);
extern int _sysio_fd_dup(int oldfd, int newfd, int force);
extern int _sysio_fd_close_all(void);