2ffbceb2b0
since commit 8405a8fff3 ("netfilter: nf_qeueue: Drop queue entries on
nf_unregister_hook") all pending queued entries are discarded.
So we can simply remove all of the owner handling -- when module is
removed it also needs to unregister all its hooks.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
91 lines
2 KiB
C
91 lines
2 KiB
C
/*
|
|
* Simplified MAC Kernel (smack) security module
|
|
*
|
|
* This file contains the Smack netfilter implementation
|
|
*
|
|
* Author:
|
|
* Casey Schaufler <casey@schaufler-ca.com>
|
|
*
|
|
* Copyright (C) 2014 Casey Schaufler <casey@schaufler-ca.com>
|
|
* Copyright (C) 2014 Intel Corporation.
|
|
*
|
|
* 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 published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/netfilter_ipv4.h>
|
|
#include <linux/netfilter_ipv6.h>
|
|
#include <linux/netdevice.h>
|
|
#include "smack.h"
|
|
|
|
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
|
|
|
|
static unsigned int smack_ipv6_output(void *priv,
|
|
struct sk_buff *skb,
|
|
const struct nf_hook_state *state)
|
|
{
|
|
struct socket_smack *ssp;
|
|
struct smack_known *skp;
|
|
|
|
if (skb && skb->sk && skb->sk->sk_security) {
|
|
ssp = skb->sk->sk_security;
|
|
skp = ssp->smk_out;
|
|
skb->secmark = skp->smk_secid;
|
|
}
|
|
|
|
return NF_ACCEPT;
|
|
}
|
|
#endif /* IPV6 */
|
|
|
|
static unsigned int smack_ipv4_output(void *priv,
|
|
struct sk_buff *skb,
|
|
const struct nf_hook_state *state)
|
|
{
|
|
struct socket_smack *ssp;
|
|
struct smack_known *skp;
|
|
|
|
if (skb && skb->sk && skb->sk->sk_security) {
|
|
ssp = skb->sk->sk_security;
|
|
skp = ssp->smk_out;
|
|
skb->secmark = skp->smk_secid;
|
|
}
|
|
|
|
return NF_ACCEPT;
|
|
}
|
|
|
|
static struct nf_hook_ops smack_nf_ops[] = {
|
|
{
|
|
.hook = smack_ipv4_output,
|
|
.pf = NFPROTO_IPV4,
|
|
.hooknum = NF_INET_LOCAL_OUT,
|
|
.priority = NF_IP_PRI_SELINUX_FIRST,
|
|
},
|
|
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
|
|
{
|
|
.hook = smack_ipv6_output,
|
|
.pf = NFPROTO_IPV6,
|
|
.hooknum = NF_INET_LOCAL_OUT,
|
|
.priority = NF_IP6_PRI_SELINUX_FIRST,
|
|
},
|
|
#endif /* IPV6 */
|
|
};
|
|
|
|
static int __init smack_nf_ip_init(void)
|
|
{
|
|
int err;
|
|
|
|
if (smack_enabled == 0)
|
|
return 0;
|
|
|
|
printk(KERN_DEBUG "Smack: Registering netfilter hooks\n");
|
|
|
|
err = nf_register_hooks(smack_nf_ops, ARRAY_SIZE(smack_nf_ops));
|
|
if (err)
|
|
pr_info("Smack: nf_register_hooks: error %d\n", err);
|
|
|
|
return 0;
|
|
}
|
|
|
|
__initcall(smack_nf_ip_init);
|