posix-io/lseek.c

/*	A part of the Windows CE C Extra Library (celibc)
	Copyright 2007-2015 PC GO Ld.

	This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
*/

#include <windows.h>
#include <unistd.h>
#include <errno.h>

off_t lseek(int fd, off_t offset, int whence) {
	if(whence < 0 || whence > 2) {
		errno = EINVAL;
		return -1;
	}
	return SetFilePointer((void *)fd, offset, NULL, whence);
}