/usr/src/xtables-addons-2.6/extensions/compat_xtables.c is in xtables-addons-dkms 2.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | /*
* API compat layer
* written by Jan Engelhardt, 2008 - 2010
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License, either
* version 2 of the License, or any later version.
*/
#include <linux/ip.h>
#include <linux/kernel.h>
#include <linux/kmod.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/version.h>
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_ipv6/ip6_tables.h>
#include <linux/netfilter_arp.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/route.h>
#include <linux/export.h>
#include "compat_skbuff.h"
#include "compat_xtnu.h"
#if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE)
# define WITH_IPV6 1
#endif
void *HX_memmem(const void *space, size_t spacesize,
const void *point, size_t pointsize)
{
size_t i;
if (pointsize > spacesize)
return NULL;
for (i = 0; i <= spacesize - pointsize; ++i)
if (memcmp(space + i, point, pointsize) == 0)
return (void *)space + i;
return NULL;
}
EXPORT_SYMBOL_GPL(HX_memmem);
MODULE_LICENSE("GPL");
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