Jan Engelhardt wrote:
As with xt_tos and xt_TOS, the old header files are kept for the time,
and we define a revision 0 which is compatible with ipt_tos/ipt_TOS -
same for xt_owner.
--- net-2.6.25.orig/include/linux/netfilter_ipv4/Kbuild
+++ net-2.6.25/include/linux/netfilter_ipv4/Kbuild
@@ -29,7 +29,6 @@ header-y += ipt_limit.h
header-y += ipt_mac.h
header-y += ipt_mark.h
header-y += ipt_multiport.h
-header-y += ipt_owner.h
header-y += ipt_physdev.h
header-y += ipt_pkttype.h
header-y += ipt_policy.h
Index: net-2.6.25/include/linux/netfilter_ipv6/Kbuild
===================================================================
--- net-2.6.25.orig/include/linux/netfilter_ipv6/Kbuild
+++ net-2.6.25/include/linux/netfilter_ipv6/Kbuild
@@ -13,7 +13,6 @@ header-y += ip6t_mac.h
header-y += ip6t_mark.h
header-y += ip6t_multiport.h
header-y += ip6t_opts.h
-header-y += ip6t_owner.h
header-y += ip6t_physdev.h
header-y += ip6t_policy.h
header-y += ip6t_rt.h
Please keep both.
+config NETFILTER_XT_MATCH_OWNER
+ tristate '"owner" match support'
+ depends on NETFILTER_XTABLES
+ ---help---
+ Socket owner matching allows you to match locally-generated packets
+ based on who created the socket: the user, group, process or session.
Only user and group are supported.
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/file.h>
+#include <net/sock.h>
+#include <linux/netfilter/x_tables.h>
+#include <linux/netfilter/xt_owner.h>
+#include <linux/netfilter_ipv4/ipt_owner.h>
+#include <linux/netfilter_ipv6/ip6t_owner.h>
+
+static bool
+owner_mt_v0(const struct sk_buff *skb, const struct net_device *in,
+ const struct net_device *out, const struct xt_match *match,
+ const void *matchinfo, int offset, unsigned int protoff,
+ bool *hotdrop)
+{
+ const struct ipt_owner_info *info = matchinfo;
+ const struct file *filp;
+
+ if (skb->sk == NULL || skb->sk->sk_socket == NULL)
+ return false;
+
+ filp = skb->sk->sk_socket->file;
+ if (filp == NULL)
+ return false;
What would be nice is to allow matching whether a socket exists,
without UID/GID. I had a patch for this for a long time, but
lost it somewhere.
+
+ if (info->match & IPT_OWNER_UID)
+ if ((filp->f_uid != info->uid) ^
+ !!(info->invert & IPT_OWNER_UID))
+ return false;
+
+ if (info->match & IPT_OWNER_GID)
+ if ((filp->f_gid != info->gid) ^
+ !!(info->invert & IPT_OWNER_GID))
+ return false;
+
+ return true;
+}
+
+static struct xt_match owner_mt_reg[] __read_mostly = {
+ {
+ .name = "owner",
+ .revision = 0,
+ .family = AF_INET,
+ .match = owner_mt_v0,
+ .matchsize = sizeof(struct ipt_owner_info),
+ .checkentry = owner_mt_check_v0,
+ .hooks = (1 << NF_IP_LOCAL_OUT) |
+ (1 << NF_IP_POST_ROUTING),
This needs to use NF_INET_...
Please resend all your patches when you want me to apply them.
Thanks.
-
To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
