4 files changed, 64 insertions, 17 deletions

diff --git a/net/appletalk/aarp.c b/net/appletalk/aarp.c
index 8ad3ec2610b6..b9e85a4751a6 100644
--- a/net/appletalk/aarp.c
+++ b/net/appletalk/aarp.c
@@ -879,15 +879,24 @@ static struct notifier_block aarp_notifier = {
 
 static unsigned char aarp_snap_id[] = { 0x00, 0x00, 0x00, 0x80, 0xF3 };
 
-void __init aarp_proto_init(void)
+int __init aarp_proto_init(void)
 {
+	int rc;
+
 	aarp_dl = register_snap_client(aarp_snap_id, aarp_rcv);
-	if (!aarp_dl)
+	if (!aarp_dl) {
 		printk(KERN_CRIT "Unable to register AARP with SNAP.\n");
+		return -ENOMEM;
+	}
 	setup_timer(&aarp_timer, aarp_expire_timeout, 0);
 	aarp_timer.expires  = jiffies + sysctl_aarp_expiry_time;
 	add_timer(&aarp_timer);
-	register_netdevice_notifier(&aarp_notifier);
+	rc = register_netdevice_notifier(&aarp_notifier);
+	if (rc) {
+		del_timer_sync(&aarp_timer);
+		unregister_snap_client(aarp_dl);
+	}
+	return rc;
 }
 
 /* Remove the AARP entries associated with a device. */
diff --git a/net/appletalk/atalk_proc.c b/net/appletalk/atalk_proc.c
index af46bc49e1e9..b5f84f428aa6 100644
--- a/net/appletalk/atalk_proc.c
+++ b/net/appletalk/atalk_proc.c
@@ -293,7 +293,7 @@ out_interface:
 	goto out;
 }
 
-void __exit atalk_proc_exit(void)
+void atalk_proc_exit(void)
 {
 	remove_proc_entry("interface", atalk_proc_dir);
 	remove_proc_entry("route", atalk_proc_dir);
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 10d2bdce686e..93209c009df5 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1029,6 +1029,11 @@ static int atalk_create(struct net *net, struct socket *sock, int protocol,
 	 */
 	if (sock->type != SOCK_RAW && sock->type != SOCK_DGRAM)
 		goto out;
+
+	rc = -EPERM;
+	if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
+		goto out;
+
 	rc = -ENOMEM;
 	sk = sk_alloc(net, PF_APPLETALK, GFP_KERNEL, &ddp_proto, kern);
 	if (!sk)
@@ -1906,31 +1911,61 @@ static unsigned char ddp_snap_id[] = { 0x08, 0x00, 0x07, 0x80, 0x9B };
 EXPORT_SYMBOL(atrtr_get_dev);
 EXPORT_SYMBOL(atalk_find_dev_addr);
 
-static const char atalk_err_snap[] __initconst =
-	KERN_CRIT "Unable to register DDP with SNAP.\n";
-
 /* Called by proto.c on kernel start up */
 static int __init atalk_init(void)
 {
-	int rc = proto_register(&ddp_proto, 0);
+	int rc;
 
-	if (rc != 0)
+	rc = proto_register(&ddp_proto, 0);
+	if (rc)
 		goto out;
 
-	(void)sock_register(&atalk_family_ops);
+	rc = sock_register(&atalk_family_ops);
+	if (rc)
+		goto out_proto;
+
 	ddp_dl = register_snap_client(ddp_snap_id, atalk_rcv);
-	if (!ddp_dl)
-		printk(atalk_err_snap);
+	if (!ddp_dl) {
+		pr_crit("Unable to register DDP with SNAP.\n");
+		rc = -ENOMEM;
+		goto out_sock;
+	}
 
 	dev_add_pack(&ltalk_packet_type);
 	dev_add_pack(&ppptalk_packet_type);
 
-	register_netdevice_notifier(&ddp_notifier);
-	aarp_proto_init();
-	atalk_proc_init();
-	atalk_register_sysctl();
+	rc = register_netdevice_notifier(&ddp_notifier);
+	if (rc)
+		goto out_snap;
+
+	rc = aarp_proto_init();
+	if (rc)
+		goto out_dev;
+
+	rc = atalk_proc_init();
+	if (rc)
+		goto out_aarp;
+
+	rc = atalk_register_sysctl();
+	if (rc)
+		goto out_proc;
 out:
 	return rc;
+out_proc:
+	atalk_proc_exit();
+out_aarp:
+	aarp_cleanup_module();
+out_dev:
+	unregister_netdevice_notifier(&ddp_notifier);
+out_snap:
+	dev_remove_pack(&ppptalk_packet_type);
+	dev_remove_pack(&ltalk_packet_type);
+	unregister_snap_client(ddp_dl);
+out_sock:
+	sock_unregister(PF_APPLETALK);
+out_proto:
+	proto_unregister(&ddp_proto);
+	goto out;
 }
 module_init(atalk_init);
 
diff --git a/net/appletalk/sysctl_net_atalk.c b/net/appletalk/sysctl_net_atalk.c
index ebb864361f7a..4e6042e0fcac 100644
--- a/net/appletalk/sysctl_net_atalk.c
+++ b/net/appletalk/sysctl_net_atalk.c
@@ -44,9 +44,12 @@ static struct ctl_table atalk_table[] = {
 
 static struct ctl_table_header *atalk_table_header;
 
-void atalk_register_sysctl(void)
+int __init atalk_register_sysctl(void)
 {
 	atalk_table_header = register_net_sysctl(&init_net, "net/appletalk", atalk_table);
+	if (!atalk_table_header)
+		return -ENOMEM;
+	return 0;
 }
 
 void atalk_unregister_sysctl(void)