netfilter: xtables: remove xt_owner v0

Superseded by xt_owner v1 (v2.6.24-2388-g0265ab44).
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>

include/linux/netfilter_ipv4/Kbuild

@@ -28,7 +28,6 @@ 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

include/linux/netfilter_ipv4/ipt_owner.h

-#ifndef _IPT_OWNER_H
-#define _IPT_OWNER_H
-
-/* match and invert flags */
-#define IPT_OWNER_UID	0x01
-#define IPT_OWNER_GID	0x02
-#define IPT_OWNER_PID	0x04
-#define IPT_OWNER_SID	0x08
-#define IPT_OWNER_COMM	0x10
-
-struct ipt_owner_info {
-    __kernel_uid32_t uid;
-    __kernel_gid32_t gid;
-    __kernel_pid_t pid;
-    __kernel_pid_t sid;
-    char comm[16];
-    u_int8_t match, invert;	/* flags */
-};
-
-#endif /*_IPT_OWNER_H*/

include/linux/netfilter_ipv6/Kbuild

@@ -14,7 +14,6 @@ header-y += ip6t_mark.h
 header-y += ip6t_mh.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

include/linux/netfilter_ipv6/ip6t_owner.h

-#ifndef _IP6T_OWNER_H
-#define _IP6T_OWNER_H
-
-/* match and invert flags */
-#define IP6T_OWNER_UID	0x01
-#define IP6T_OWNER_GID	0x02
-#define IP6T_OWNER_PID	0x04
-#define IP6T_OWNER_SID	0x08
-
-struct ip6t_owner_info {
-    __kernel_uid32_t uid;
-    __kernel_gid32_t gid;
-    __kernel_pid_t pid;
-    __kernel_pid_t sid;
-    u_int8_t match, invert;	/* flags */
-};
-
-#endif /*_IPT_OWNER_H*/

net/netfilter/xt_owner.c

@@ -5,7 +5,6 @@
  * (C) 2000 Marc Boucher <marc@mbsi.ca>
  *
  * Copyright © CC Computer Consultants GmbH, 2007 - 2008
- * <jengelh@computergmbh.de>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -17,60 +16,6 @@
 #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 xt_match_param *par)
-{
-	const struct ipt_owner_info *info = par->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;
-
-	if (info->match & IPT_OWNER_UID)
-		if ((filp->f_cred->fsuid != info->uid) ^
-		    !!(info->invert & IPT_OWNER_UID))
-			return false;
-
-	if (info->match & IPT_OWNER_GID)
-		if ((filp->f_cred->fsgid != info->gid) ^
-		    !!(info->invert & IPT_OWNER_GID))
-			return false;
-
-	return true;
-}
-
-static bool
-owner_mt6_v0(const struct sk_buff *skb, const struct xt_match_param *par)
-{
-	const struct ip6t_owner_info *info = par->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;
-
-	if (info->match & IP6T_OWNER_UID)
-		if ((filp->f_cred->fsuid != info->uid) ^
-		    !!(info->invert & IP6T_OWNER_UID))
-			return false;
-
-	if (info->match & IP6T_OWNER_GID)
-		if ((filp->f_cred->fsgid != info->gid) ^
-		    !!(info->invert & IP6T_OWNER_GID))
-			return false;
-
-	return true;
-}
 
 static bool
 owner_mt(const struct sk_buff *skb, const struct xt_match_param *par)
@@ -107,81 +52,30 @@ owner_mt(const struct sk_buff *skb, const struct xt_match_param *par)
 	return true;
 }
 
-static bool owner_mt_check_v0(const struct xt_mtchk_param *par)
-{
-	const struct ipt_owner_info *info = par->matchinfo;
-
-	if (info->match & (IPT_OWNER_PID | IPT_OWNER_SID | IPT_OWNER_COMM)) {
-		printk(KERN_WARNING KBUILD_MODNAME
-		       ": PID, SID and command matching is not "
-		       "supported anymore\n");
-		return false;
-	}
-
-	return true;
-}
-
-static bool owner_mt6_check_v0(const struct xt_mtchk_param *par)
-{
-	const struct ip6t_owner_info *info = par->matchinfo;
-
-	if (info->match & (IP6T_OWNER_PID | IP6T_OWNER_SID)) {
-		printk(KERN_WARNING KBUILD_MODNAME
-		       ": PID and SID matching is not supported anymore\n");
-		return false;
-	}
-
-	return true;
-}
-
-static struct xt_match owner_mt_reg[] __read_mostly = {
-	{
-		.name       = "owner",
-		.revision   = 0,
-		.family     = NFPROTO_IPV4,
-		.match      = owner_mt_v0,
-		.matchsize  = sizeof(struct ipt_owner_info),
-		.checkentry = owner_mt_check_v0,
-		.hooks      = (1 << NF_INET_LOCAL_OUT) |
-		              (1 << NF_INET_POST_ROUTING),
-		.me         = THIS_MODULE,
-	},
-	{
-		.name       = "owner",
-		.revision   = 0,
-		.family     = NFPROTO_IPV6,
-		.match      = owner_mt6_v0,
-		.matchsize  = sizeof(struct ip6t_owner_info),
-		.checkentry = owner_mt6_check_v0,
-		.hooks      = (1 << NF_INET_LOCAL_OUT) |
-		              (1 << NF_INET_POST_ROUTING),
-		.me         = THIS_MODULE,
-	},
-	{
-		.name       = "owner",
-		.revision   = 1,
-		.family     = NFPROTO_UNSPEC,
-		.match      = owner_mt,
-		.matchsize  = sizeof(struct xt_owner_match_info),
-		.hooks      = (1 << NF_INET_LOCAL_OUT) |
-		              (1 << NF_INET_POST_ROUTING),
-		.me         = THIS_MODULE,
-	},
+static struct xt_match owner_mt_reg __read_mostly = {
+	.name       = "owner",
+	.revision   = 1,
+	.family     = NFPROTO_UNSPEC,
+	.match      = owner_mt,
+	.matchsize  = sizeof(struct xt_owner_match_info),
+	.hooks      = (1 << NF_INET_LOCAL_OUT) |
+	              (1 << NF_INET_POST_ROUTING),
+	.me         = THIS_MODULE,
 };
 
 static int __init owner_mt_init(void)
 {
-	return xt_register_matches(owner_mt_reg, ARRAY_SIZE(owner_mt_reg));
+	return xt_register_match(&owner_mt_reg);
 }
 
 static void __exit owner_mt_exit(void)
 {
-	xt_unregister_matches(owner_mt_reg, ARRAY_SIZE(owner_mt_reg));
+	xt_unregister_match(&owner_mt_reg);
 }
 
 module_init(owner_mt_init);
 module_exit(owner_mt_exit);
-MODULE_AUTHOR("Jan Engelhardt <jengelh@computergmbh.de>");
+MODULE_AUTHOR("Jan Engelhardt <jengelh@medozas.de>");
 MODULE_DESCRIPTION("Xtables: socket owner matching");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ipt_owner");