__off_t
typedef __off_t off_t;
typedef __off_t regoff_t;
int fseeko(FILE *, __off_t, int);
__off_t ftello(FILE *);
typedef __off_t fpos_t;
int ftruncate(int, __off_t);
__off_t lseek(int, __off_t, int);
void *mmap(void *, size_t, int, int, int, __off_t);
int truncate(const char *, __off_t);
typedef __off_t off_t;
typedef __off_t off_t;
__ssize_t __sys_pread(int, void *, __size_t, __off_t);
typedef __off_t off_t;
typedef __off_t off_t;
typedef __off_t off_t;
typedef __off_t off_t;
typedef __off_t off_t;
typedef __off_t off_t; /* file offset */
typedef __off_t off_t;