ref: 8d8798e08a6d07094b90b4c06bc3df988e935d6c
dir: /sys/src/libc/amd64/_seek.c/
#include <u.h>
#include <libc.h>
extern int _seek(vlong*, int, vlong, int);
vlong
seek(int fd, vlong o, int p)
{
	vlong l;
	if(_seek(&l, fd, o, p) < 0)
		l = -1LL;
	return l;
}