ref: f3216125def1dbfa242c274f66e13176425fa41e dir: /sys/src/ape/lib/ap/power64/_seek.c/
extern long __SEEK(long long*, int, long long, int); long long _SEEK(int fd, long long o, int p) { long long l; if(__SEEK(&l, fd, o, p) < 0) l = -1; return l; }