1 files changed, 0 insertions, 304 deletions
diff --git a/ANDROID_3.4.5/security/selinux/netif.c b/ANDROID_3.4.5/security/selinux/netif.c
deleted file mode 100644
index 326f22cb..00000000
--- a/ANDROID_3.4.5/security/selinux/netif.c
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * Network interface table.
- *
- * Network interfaces (devices) do not have a security field, so we
- * maintain a table associating each interface with a SID.
- *
- * Author: James Morris <jmorris@redhat.com>
- *
- * Copyright (C) 2003 Red Hat, Inc., James Morris <jmorris@redhat.com>
- * Copyright (C) 2007 Hewlett-Packard Development Company, L.P.
- *		      Paul Moore <paul@paul-moore.com>
- *
- * 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/init.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/stddef.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/notifier.h>
-#include <linux/netdevice.h>
-#include <linux/rcupdate.h>
-#include <net/net_namespace.h>
-
-#include "security.h"
-#include "objsec.h"
-#include "netif.h"
-
-#define SEL_NETIF_HASH_SIZE	64
-#define SEL_NETIF_HASH_MAX	1024
-
-struct sel_netif {
-	struct list_head list;
-	struct netif_security_struct nsec;
-	struct rcu_head rcu_head;
-};
-
-static u32 sel_netif_total;
-static LIST_HEAD(sel_netif_list);
-static DEFINE_SPINLOCK(sel_netif_lock);
-static struct list_head sel_netif_hash[SEL_NETIF_HASH_SIZE];
-
-/**
- * sel_netif_hashfn - Hashing function for the interface table
- * @ifindex: the network interface
- *
- * Description:
- * This is the hashing function for the network interface table, it returns the
- * bucket number for the given interface.
- *
- */
-static inline u32 sel_netif_hashfn(int ifindex)
-{
-	return (ifindex & (SEL_NETIF_HASH_SIZE - 1));
-}
-
-/**
- * sel_netif_find - Search for an interface record
- * @ifindex: the network interface
- *
- * Description:
- * Search the network interface table and return the record matching @ifindex.
- * If an entry can not be found in the table return NULL.
- *
- */
-static inline struct sel_netif *sel_netif_find(int ifindex)
-{
-	int idx = sel_netif_hashfn(ifindex);
-	struct sel_netif *netif;
-
-	list_for_each_entry_rcu(netif, &sel_netif_hash[idx], list)
-		/* all of the devices should normally fit in the hash, so we
-		 * optimize for that case */
-		if (likely(netif->nsec.ifindex == ifindex))
-			return netif;
-
-	return NULL;
-}
-
-/**
- * sel_netif_insert - Insert a new interface into the table
- * @netif: the new interface record
- *
- * Description:
- * Add a new interface record to the network interface hash table.  Returns
- * zero on success, negative values on failure.
- *
- */
-static int sel_netif_insert(struct sel_netif *netif)
-{
-	int idx;
-
-	if (sel_netif_total >= SEL_NETIF_HASH_MAX)
-		return -ENOSPC;
-
-	idx = sel_netif_hashfn(netif->nsec.ifindex);
-	list_add_rcu(&netif->list, &sel_netif_hash[idx]);
-	sel_netif_total++;
-
-	return 0;
-}
-
-/**
- * sel_netif_destroy - Remove an interface record from the table
- * @netif: the existing interface record
- *
- * Description:
- * Remove an existing interface record from the network interface table.
- *
- */
-static void sel_netif_destroy(struct sel_netif *netif)
-{
-	list_del_rcu(&netif->list);
-	sel_netif_total--;
-	kfree_rcu(netif, rcu_head);
-}
-
-/**
- * sel_netif_sid_slow - Lookup the SID of a network interface using the policy
- * @ifindex: the network interface
- * @sid: interface SID
- *
- * Description:
- * This function determines the SID of a network interface by quering the
- * security policy.  The result is added to the network interface table to
- * speedup future queries.  Returns zero on success, negative values on
- * failure.
- *
- */
-static int sel_netif_sid_slow(int ifindex, u32 *sid)
-{
-	int ret;
-	struct sel_netif *netif;
-	struct sel_netif *new = NULL;
-	struct net_device *dev;
-
-	/* NOTE: we always use init's network namespace since we don't
-	 * currently support containers */
-
-	dev = dev_get_by_index(&init_net, ifindex);
-	if (unlikely(dev == NULL)) {
-		printk(KERN_WARNING
-		       "SELinux: failure in sel_netif_sid_slow(),"
-		       " invalid network interface (%d)\n", ifindex);
-		return -ENOENT;
-	}
-
-	spin_lock_bh(&sel_netif_lock);
-	netif = sel_netif_find(ifindex);
-	if (netif != NULL) {
-		*sid = netif->nsec.sid;
-		ret = 0;
-		goto out;
-	}
-	new = kzalloc(sizeof(*new), GFP_ATOMIC);
-	if (new == NULL) {
-		ret = -ENOMEM;
-		goto out;
-	}
-	ret = security_netif_sid(dev->name, &new->nsec.sid);
-	if (ret != 0)
-		goto out;
-	new->nsec.ifindex = ifindex;
-	ret = sel_netif_insert(new);
-	if (ret != 0)
-		goto out;
-	*sid = new->nsec.sid;
-
-out:
-	spin_unlock_bh(&sel_netif_lock);
-	dev_put(dev);
-	if (unlikely(ret)) {
-		printk(KERN_WARNING
-		       "SELinux: failure in sel_netif_sid_slow(),"
-		       " unable to determine network interface label (%d)\n",
-		       ifindex);
-		kfree(new);
-	}
-	return ret;
-}
-
-/**
- * sel_netif_sid - Lookup the SID of a network interface
- * @ifindex: the network interface
- * @sid: interface SID
- *
- * Description:
- * This function determines the SID of a network interface using the fastest
- * method possible.  First the interface table is queried, but if an entry
- * can't be found then the policy is queried and the result is added to the
- * table to speedup future queries.  Returns zero on success, negative values
- * on failure.
- *
- */
-int sel_netif_sid(int ifindex, u32 *sid)
-{
-	struct sel_netif *netif;
-
-	rcu_read_lock();
-	netif = sel_netif_find(ifindex);
-	if (likely(netif != NULL)) {
-		*sid = netif->nsec.sid;
-		rcu_read_unlock();
-		return 0;
-	}
-	rcu_read_unlock();
-
-	return sel_netif_sid_slow(ifindex, sid);
-}
-
-/**
- * sel_netif_kill - Remove an entry from the network interface table
- * @ifindex: the network interface
- *
- * Description:
- * This function removes the entry matching @ifindex from the network interface
- * table if it exists.
- *
- */
-static void sel_netif_kill(int ifindex)
-{
-	struct sel_netif *netif;
-
-	rcu_read_lock();
-	spin_lock_bh(&sel_netif_lock);
-	netif = sel_netif_find(ifindex);
-	if (netif)
-		sel_netif_destroy(netif);
-	spin_unlock_bh(&sel_netif_lock);
-	rcu_read_unlock();
-}
-
-/**
- * sel_netif_flush - Flush the entire network interface table
- *
- * Description:
- * Remove all entries from the network interface table.
- *
- */
-static void sel_netif_flush(void)
-{
-	int idx;
-	struct sel_netif *netif;
-
-	spin_lock_bh(&sel_netif_lock);
-	for (idx = 0; idx < SEL_NETIF_HASH_SIZE; idx++)
-		list_for_each_entry(netif, &sel_netif_hash[idx], list)
-			sel_netif_destroy(netif);
-	spin_unlock_bh(&sel_netif_lock);
-}
-
-static int sel_netif_avc_callback(u32 event, u32 ssid, u32 tsid,
-				  u16 class, u32 perms, u32 *retained)
-{
-	if (event == AVC_CALLBACK_RESET) {
-		sel_netif_flush();
-		synchronize_net();
-	}
-	return 0;
-}
-
-static int sel_netif_netdev_notifier_handler(struct notifier_block *this,
-					     unsigned long event, void *ptr)
-{
-	struct net_device *dev = ptr;
-
-	if (dev_net(dev) != &init_net)
-		return NOTIFY_DONE;
-
-	if (event == NETDEV_DOWN)
-		sel_netif_kill(dev->ifindex);
-
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block sel_netif_netdev_notifier = {
-	.notifier_call = sel_netif_netdev_notifier_handler,
-};
-
-static __init int sel_netif_init(void)
-{
-	int i, err;
-
-	if (!selinux_enabled)
-		return 0;
-
-	for (i = 0; i < SEL_NETIF_HASH_SIZE; i++)
-		INIT_LIST_HEAD(&sel_netif_hash[i]);
-
-	register_netdevice_notifier(&sel_netif_netdev_notifier);
-
-	err = avc_add_callback(sel_netif_avc_callback, AVC_CALLBACK_RESET,
-			       SECSID_NULL, SECSID_NULL, SECCLASS_NULL, 0);
-	if (err)
-		panic("avc_add_callback() failed, error %d\n", err);
-
-	return err;
-}
-
-__initcall(sel_netif_init);
-