]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - net/ipv6/netfilter/ip6t_owner.c
1 /* Kernel module to match various things tied to sockets associated with
2 locally generated outgoing packets. */
4 /* (C) 2000-2001 Marc Boucher <marc@mbsi.ca>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/module.h>
12 #include <linux/skbuff.h>
13 #include <linux/file.h>
14 #include <linux/rcupdate.h>
17 #include <linux/netfilter_ipv6/ip6t_owner.h>
18 #include <linux/netfilter_ipv6/ip6_tables.h>
20 MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>");
21 MODULE_DESCRIPTION("IP6 tables owner matching module");
22 MODULE_LICENSE("GPL");
26 match(const struct sk_buff
*skb
,
27 const struct net_device
*in
,
28 const struct net_device
*out
,
29 const void *matchinfo
,
34 const struct ip6t_owner_info
*info
= matchinfo
;
36 if (!skb
->sk
|| !skb
->sk
->sk_socket
|| !skb
->sk
->sk_socket
->file
)
39 if (info
->match
& IP6T_OWNER_UID
) {
40 if ((skb
->sk
->sk_socket
->file
->f_uid
!= info
->uid
) ^
41 !!(info
->invert
& IP6T_OWNER_UID
))
45 if (info
->match
& IP6T_OWNER_GID
) {
46 if ((skb
->sk
->sk_socket
->file
->f_gid
!= info
->gid
) ^
47 !!(info
->invert
& IP6T_OWNER_GID
))
55 checkentry(const char *tablename
,
58 unsigned int matchsize
,
59 unsigned int hook_mask
)
61 const struct ip6t_owner_info
*info
= matchinfo
;
64 & ~((1 << NF_IP6_LOCAL_OUT
) | (1 << NF_IP6_POST_ROUTING
))) {
65 printk("ip6t_owner: only valid for LOCAL_OUT or POST_ROUTING.\n");
69 if (matchsize
!= IP6T_ALIGN(sizeof(struct ip6t_owner_info
)))
72 if (info
->match
& (IP6T_OWNER_PID
| IP6T_OWNER_SID
)) {
73 printk("ipt_owner: pid and sid matching "
74 "not supported anymore\n");
81 static struct ip6t_match owner_match
= {
84 .checkentry
= &checkentry
,
88 static int __init
init(void)
90 return ip6t_register_match(&owner_match
);
93 static void __exit
fini(void)
95 ip6t_unregister_match(&owner_match
);