/*
 * Copyright (c) 2011 Nicira Networks.
 * Distributed under the terms of the GNU GPL version 2.
 *
 * Significant portions of this file may be copied from parts of the Linux
 * kernel, by Linus Torvalds and others.
 */

#ifndef COMPAT_H
#define COMPAT_H 1

#include <linux/netlink.h>

#ifndef HAVE_NLA_NUL_STRING
static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
{
	char *s;
	int len;
	if (!attr)
		return 0;

	len = nla_len(attr);
	if (len >= maxlen)
		return -EINVAL;

	s = nla_data(attr);
	if (s[len - 1] != '\0')
		return -EINVAL;

	return 0;
}
#else
static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen)
{
	return 0;
}
#endif  /* !HAVE_NLA_NUL_STRING */

#endif /* compat.h */