138032Speter/*
2261363Sgshapiro * The contents of this file are in the public domain.
364565Sgshapiro * Written by Garrett A. Wollman, 2000-10-07.
438032Speter *
538032Speter */
638032Speter
738032Speter#include <sys/cdefs.h>
838032Speter__FBSDID("$FreeBSD$");
938032Speter
1038032Speter#include <sys/mman.h>
1138032Speter#include <errno.h>
1238032Speter
1338032Speterint
1490795Sgshapiroposix_madvise(void *address, size_t size, int how)
1590795Sgshapiro{
1690795Sgshapiro	int ret, saved_errno;
17261363Sgshapiro
1864565Sgshapiro	saved_errno = errno;
1964565Sgshapiro	if (madvise(address, size, how) == -1) {
2064565Sgshapiro		ret = errno;
2190795Sgshapiro		errno = saved_errno;
2238032Speter	} else {
23266692Sgshapiro		ret = 0;
2464565Sgshapiro	}
2538032Speter	return (ret);
2638032Speter}
2738032Speter