net: pass kern to net_proto_family create function

The generic __sock_create function has a kern argument which allows the
security system to make decisions based on if a socket is being created by
the kernel or by userspace.  This patch passes that flag to the
net_proto_family specific create function, so it can do the same thing.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

34 files changed, 75 insertions, 40 deletions

diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index abe38014b7f..4b0ce2e2b46 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1021,7 +1021,8 @@ static struct proto ddp_proto = {
  * Create a socket. Initialise the socket, blank the addresses
  * set the state.
  */
-static int atalk_create(struct net *net, struct socket *sock, int protocol)
+static int atalk_create(struct net *net, struct socket *sock, int protocol,
+			int kern)
 {
 	struct sock *sk;
 	int rc = -ESOCKTNOSUPPORT;
diff --git a/net/atm/pvc.c b/net/atm/pvc.c
index a6e1fdbae87..8d74e62b0d7 100644
--- a/net/atm/pvc.c
+++ b/net/atm/pvc.c
@@ -127,7 +127,8 @@ static const struct proto_ops pvc_proto_ops = {
 };
 
 
-static int pvc_create(struct net *net, struct socket *sock,int protocol)
+static int pvc_create(struct net *net, struct socket *sock, int protocol,
+		      int kern)
 {
 	if (net != &init_net)
 		return -EAFNOSUPPORT;
diff --git a/net/atm/svc.c b/net/atm/svc.c
index 81935423331..c7395070ee7 100644
--- a/net/atm/svc.c
+++ b/net/atm/svc.c
@@ -25,7 +25,7 @@
 #include "signaling.h"
 #include "addr.h"
 
-static int svc_create(struct net *net, struct socket *sock,int protocol);
+static int svc_create(struct net *net, struct socket *sock, int protocol, int kern);
 
 /*
  * Note: since all this is still nicely synchronized with the signaling demon,
@@ -330,7 +330,7 @@ static int svc_accept(struct socket *sock,struct socket *newsock,int flags)
 
 	lock_sock(sk);
 
-	error = svc_create(sock_net(sk), newsock,0);
+	error = svc_create(sock_net(sk), newsock, 0, 0);
 	if (error)
 		goto out;
 
@@ -650,7 +650,8 @@ static const struct proto_ops svc_proto_ops = {
 };
 
 
-static int svc_create(struct net *net, struct socket *sock,int protocol)
+static int svc_create(struct net *net, struct socket *sock, int protocol,
+		      int kern)
 {
 	int error;
 
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index f1e998b2796..d6ddfa4c447 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -799,7 +799,8 @@ static struct proto ax25_proto = {
 	.obj_size = sizeof(struct sock),
 };
 
-static int ax25_create(struct net *net, struct socket *sock, int protocol)
+static int ax25_create(struct net *net, struct socket *sock, int protocol,
+		       int kern)
 {
 	struct sock *sk;
 	ax25_cb *ax25;
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 399e59c9c6c..087cc51f592 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -126,7 +126,8 @@ int bt_sock_unregister(int proto)
 }
 EXPORT_SYMBOL(bt_sock_unregister);
 
-static int bt_sock_create(struct net *net, struct socket *sock, int proto)
+static int bt_sock_create(struct net *net, struct socket *sock, int proto,
+			  int kern)
 {
 	int err;
 
@@ -144,7 +145,7 @@ static int bt_sock_create(struct net *net, struct socket *sock, int proto)
 	read_lock(&bt_proto_lock);
 
 	if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) {
-		err = bt_proto[proto]->create(net, sock, proto);
+		err = bt_proto[proto]->create(net, sock, proto, kern);
 		bt_sock_reclassify_lock(sock, proto);
 		module_put(bt_proto[proto]->owner);
 	}
diff --git a/net/bluetooth/bnep/sock.c b/net/bluetooth/bnep/sock.c
index 0a2c5460bb4..2ff6ac7b2ed 100644
--- a/net/bluetooth/bnep/sock.c
+++ b/net/bluetooth/bnep/sock.c
@@ -195,7 +195,8 @@ static struct proto bnep_proto = {
 	.obj_size	= sizeof(struct bt_sock)
 };
 
-static int bnep_sock_create(struct net *net, struct socket *sock, int protocol)
+static int bnep_sock_create(struct net *net, struct socket *sock, int protocol,
+			    int kern)
 {
 	struct sock *sk;
 
diff --git a/net/bluetooth/cmtp/sock.c b/net/bluetooth/cmtp/sock.c
index de7c8040bc5..978cc3a718a 100644
--- a/net/bluetooth/cmtp/sock.c
+++ b/net/bluetooth/cmtp/sock.c
@@ -190,7 +190,8 @@ static struct proto cmtp_proto = {
 	.obj_size	= sizeof(struct bt_sock)
 };
 
-static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol)
+static int cmtp_sock_create(struct net *net, struct socket *sock, int protocol,
+			    int kern)
 {
 	struct sock *sk;
 
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index e7395f23198..1ca5c7ca9bd 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -621,7 +621,8 @@ static struct proto hci_sk_proto = {
 	.obj_size	= sizeof(struct hci_pinfo)
 };
 
-static int hci_sock_create(struct net *net, struct socket *sock, int protocol)
+static int hci_sock_create(struct net *net, struct socket *sock, int protocol,
+			   int kern)
 {
 	struct sock *sk;
 
diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c
index 4beb6a7a295..9cfef68b9fe 100644
--- a/net/bluetooth/hidp/sock.c
+++ b/net/bluetooth/hidp/sock.c
@@ -241,7 +241,8 @@ static struct proto hidp_proto = {
 	.obj_size	= sizeof(struct bt_sock)
 };
 
-static int hidp_sock_create(struct net *net, struct socket *sock, int protocol)
+static int hidp_sock_create(struct net *net, struct socket *sock, int protocol,
+			    int kern)
 {
 	struct sock *sk;
 
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index d65101d92ee..365ae161d70 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -819,7 +819,8 @@ static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int p
 	return sk;
 }
 
-static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol)
+static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol,
+			     int kern)
 {
 	struct sock *sk;
 
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index d3bfc1b0afb..4b5968dda67 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -323,7 +323,8 @@ static struct sock *rfcomm_sock_alloc(struct net *net, struct socket *sock, int
 	return sk;
 }
 
-static int rfcomm_sock_create(struct net *net, struct socket *sock, int protocol)
+static int rfcomm_sock_create(struct net *net, struct socket *sock,
+			      int protocol, int kern)
 {
 	struct sock *sk;
 
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 694a65541b7..dd8f6ec57dc 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -430,7 +430,8 @@ static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, int pro
 	return sk;
 }
 
-static int sco_sock_create(struct net *net, struct socket *sock, int protocol)
+static int sco_sock_create(struct net *net, struct socket *sock, int protocol,
+			   int kern)
 {
 	struct sock *sk;
 
diff --git a/net/can/af_can.c b/net/can/af_can.c
index 9c0426dc318..833bd838edc 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -114,7 +114,8 @@ static void can_sock_destruct(struct sock *sk)
 	skb_queue_purge(&sk->sk_receive_queue);
 }
 
-static int can_create(struct net *net, struct socket *sock, int protocol)
+static int can_create(struct net *net, struct socket *sock, int protocol,
+		      int kern)
 {
 	struct sock *sk;
 	struct can_proto *cp;
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index 2e355841ca9..9ade3a6de95 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -675,7 +675,8 @@ char *dn_addr2asc(__u16 addr, char *buf)
 
 
 
-static int dn_create(struct net *net, struct socket *sock, int protocol)
+static int dn_create(struct net *net, struct socket *sock, int protocol,
+		     int kern)
 {
 	struct sock *sk;
 
diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c
index 5e9426a11c3..596679803de 100644
--- a/net/econet/af_econet.c
+++ b/net/econet/af_econet.c
@@ -605,7 +605,8 @@ static struct proto econet_proto = {
  *	Create an Econet socket
  */
 
-static int econet_create(struct net *net, struct socket *sock, int protocol)
+static int econet_create(struct net *net, struct socket *sock, int protocol,
+			 int kern)
 {
 	struct sock *sk;
 	struct econet_sock *eo;
diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c
index 309348fba72..de6e34d2a7f 100644
--- a/net/ieee802154/af_ieee802154.c
+++ b/net/ieee802154/af_ieee802154.c
@@ -234,7 +234,7 @@ static const struct proto_ops ieee802154_dgram_ops = {
  * set the state.
  */
 static int ieee802154_create(struct net *net, struct socket *sock,
-		int protocol)
+			     int protocol, int kern)
 {
 	struct sock *sk;
 	int rc;
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 180ec4c9491..5c7e42c02af 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -262,7 +262,8 @@ static inline int inet_netns_ok(struct net *net, int protocol)
  *	Create an inet socket.
  */
 
-static int inet_create(struct net *net, struct socket *sock, int protocol)
+static int inet_create(struct net *net, struct socket *sock, int protocol,
+		       int kern)
 {
 	struct sock *sk;
 	struct inet_protosw *answer;
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 1b388935659..45ed5e05ab3 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -95,7 +95,8 @@ static __inline__ struct ipv6_pinfo *inet6_sk_generic(struct sock *sk)
 	return (struct ipv6_pinfo *)(((u8 *)sk) + offset);
 }
 
-static int inet6_create(struct net *net, struct socket *sock, int protocol)
+static int inet6_create(struct net *net, struct socket *sock, int protocol,
+			int kern)
 {
 	struct inet_sock *inet;
 	struct ipv6_pinfo *np;
diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c
index 6481ee4bdf7..96d193a2441 100644
--- a/net/ipx/af_ipx.c
+++ b/net/ipx/af_ipx.c
@@ -1352,7 +1352,8 @@ static struct proto ipx_proto = {
 	.obj_size = sizeof(struct ipx_sock),
 };
 
-static int ipx_create(struct net *net, struct socket *sock, int protocol)
+static int ipx_create(struct net *net, struct socket *sock, int protocol,
+		      int kern)
 {
 	int rc = -ESOCKTNOSUPPORT;
 	struct sock *sk;
diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index 9429e4002bc..e73a0016c0a 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -61,7 +61,7 @@
 
 #include <net/irda/af_irda.h>
 
-static int irda_create(struct net *net, struct socket *sock, int protocol);
+static int irda_create(struct net *net, struct socket *sock, int protocol, int kern);
 
 static const struct proto_ops irda_stream_ops;
 static const struct proto_ops irda_seqpacket_ops;
@@ -839,7 +839,7 @@ static int irda_accept(struct socket *sock, struct socket *newsock, int flags)
 
 	IRDA_DEBUG(2, "%s()\n", __func__);
 
-	err = irda_create(sock_net(sk), newsock, sk->sk_protocol);
+	err = irda_create(sock_net(sk), newsock, sk->sk_protocol, 0);
 	if (err)
 		return err;
 
@@ -1062,7 +1062,8 @@ static struct proto irda_proto = {
  *    Create IrDA socket
  *
  */
-static int irda_create(struct net *net, struct socket *sock, int protocol)
+static int irda_create(struct net *net, struct socket *sock, int protocol,
+		       int kern)
 {
 	struct sock *sk;
 	struct irda_sock *self;
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index 3aebabb158a..1e428863574 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -481,7 +481,8 @@ static struct sock *iucv_sock_alloc(struct socket *sock, int proto, gfp_t prio)
 }
 
 /* Create an IUCV socket */
-static int iucv_sock_create(struct net *net, struct socket *sock, int protocol)
+static int iucv_sock_create(struct net *net, struct socket *sock, int protocol,
+			    int kern)
 {
 	struct sock *sk;
 
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 472f6594184..86b2c22d091 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -177,7 +177,8 @@ static struct proto key_proto = {
 	.obj_size = sizeof(struct pfkey_sock),
 };
 
-static int pfkey_create(struct net *net, struct socket *sock, int protocol)
+static int pfkey_create(struct net *net, struct socket *sock, int protocol,
+			int kern)
 {
 	struct netns_pfkey *net_pfkey = net_generic(net, pfkey_net_id);
 	struct sock *sk;
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index 4866b4fb0c2..5266c286b26 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -140,14 +140,17 @@ static struct proto llc_proto = {
 
 /**
  *	llc_ui_create - alloc and init a new llc_ui socket
+ *	@net: network namespace (must be default network)
  *	@sock: Socket to initialize and attach allocated sk to.
  *	@protocol: Unused.
+ *	@kern: on behalf of kernel or userspace
  *
  *	Allocate and initialize a new llc_ui socket, validate the user wants a
  *	socket type we have available.
  *	Returns 0 upon success, negative upon failure.
  */
-static int llc_ui_create(struct net *net, struct socket *sock, int protocol)
+static int llc_ui_create(struct net *net, struct socket *sock, int protocol,
+			 int kern)
 {
 	struct sock *sk;
 	int rc = -ESOCKTNOSUPPORT;
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 0cd2d882931..aea805c98da 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -428,7 +428,8 @@ static int __netlink_create(struct net *net, struct socket *sock,
 	return 0;
 }
 
-static int netlink_create(struct net *net, struct socket *sock, int protocol)
+static int netlink_create(struct net *net, struct socket *sock, int protocol,
+			  int kern)
 {
 	struct module *module = NULL;
 	struct mutex *cb_mutex;
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 281fa597cae..4bdd5697f63 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -425,7 +425,8 @@ static struct proto nr_proto = {
 	.obj_size = sizeof(struct nr_sock),
 };
 
-static int nr_create(struct net *net, struct socket *sock, int protocol)
+static int nr_create(struct net *net, struct socket *sock, int protocol,
+		     int kern)
 {
 	struct sock *sk;
 	struct nr_sock *nr;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 91d246d3478..3304caa6534 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1344,7 +1344,8 @@ static struct proto packet_proto = {
  *	Create a packet of type SOCK_PACKET.
  */
 
-static int packet_create(struct net *net, struct socket *sock, int protocol)
+static int packet_create(struct net *net, struct socket *sock, int protocol,
+			 int kern)
 {
 	struct sock *sk;
 	struct packet_sock *po;
diff --git a/net/phonet/af_phonet.c b/net/phonet/af_phonet.c
index 66737aa995e..3bd1be6b26f 100644
--- a/net/phonet/af_phonet.c
+++ b/net/phonet/af_phonet.c
@@ -60,7 +60,8 @@ static inline void phonet_proto_put(struct phonet_protocol *pp)
 
 /* protocol family functions */
 
-static int pn_socket_create(struct net *net, struct socket *sock, int protocol)
+static int pn_socket_create(struct net *net, struct socket *sock, int protocol,
+			    int kern)
 {
 	struct sock *sk;
 	struct pn_sock *pn;
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c
index 2b978dc6e75..e25d8d5ce8d 100644
--- a/net/rds/af_rds.c
+++ b/net/rds/af_rds.c
@@ -410,7 +410,8 @@ static int __rds_create(struct socket *sock, struct sock *sk, int protocol)
 	return 0;
 }
 
-static int rds_create(struct net *net, struct socket *sock, int protocol)
+static int rds_create(struct net *net, struct socket *sock, int protocol,
+		      int kern)
 {
 	struct sock *sk;
 
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index c17734c2ce8..4de4287fec3 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -512,7 +512,8 @@ static struct proto rose_proto = {
 	.obj_size = sizeof(struct rose_sock),
 };
 
-static int rose_create(struct net *net, struct socket *sock, int protocol)
+static int rose_create(struct net *net, struct socket *sock, int protocol,
+		       int kern)
 {
 	struct sock *sk;
 	struct rose_sock *rose;
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 6817c9781ef..f978d02a248 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -608,7 +608,8 @@ static unsigned int rxrpc_poll(struct file *file, struct socket *sock,
 /*
  * create an RxRPC socket
  */
-static int rxrpc_create(struct net *net, struct socket *sock, int protocol)
+static int rxrpc_create(struct net *net, struct socket *sock, int protocol,
+			int kern)
 {
 	struct rxrpc_sock *rx;
 	struct sock *sk;
diff --git a/net/socket.c b/net/socket.c
index 9dff31c9b79..4f3e0f0c156 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1252,7 +1252,7 @@ static int __sock_create(struct net *net, int family, int type, int protocol,
 	/* Now protected by module ref count */
 	rcu_read_unlock();
 
-	err = pf->create(net, sock, protocol);
+	err = pf->create(net, sock, protocol, kern);
 	if (err < 0)
 		goto out_module_put;
 
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index e6d9abf7440..d00c2119faf 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -177,6 +177,7 @@ static void reject_rx_queue(struct sock *sk)
  * @net: network namespace (must be default network)
  * @sock: pre-allocated socket structure
  * @protocol: protocol indicator (must be 0)
+ * @kern: caused by kernel or by userspace?
  *
  * This routine creates additional data structures used by the TIPC socket,
  * initializes them, and links them together.
@@ -184,7 +185,8 @@ static void reject_rx_queue(struct sock *sk)
  * Returns 0 on success, errno otherwise
  */
 
-static int tipc_create(struct net *net, struct socket *sock, int protocol)
+static int tipc_create(struct net *net, struct socket *sock, int protocol,
+		       int kern)
 {
 	const struct proto_ops *ops;
 	socket_state state;
@@ -1528,7 +1530,7 @@ static int accept(struct socket *sock, struct socket *new_sock, int flags)
 
 	buf = skb_peek(&sk->sk_receive_queue);
 
-	res = tipc_create(sock_net(sock->sk), new_sock, 0);
+	res = tipc_create(sock_net(sock->sk), new_sock, 0, 0);
 	if (!res) {
 		struct sock *new_sk = new_sock->sk;
 		struct tipc_sock *new_tsock = tipc_sk(new_sk);
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 3291902f0b8..178d3af2a60 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -621,7 +621,8 @@ out:
 	return sk;
 }
 
-static int unix_create(struct net *net, struct socket *sock, int protocol)
+static int unix_create(struct net *net, struct socket *sock, int protocol,
+		       int kern)
 {
 	if (protocol && protocol != PF_UNIX)
 		return -EPROTONOSUPPORT;
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index e19d811788a..38e235f61e2 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -501,7 +501,8 @@ out:
 	return sk;
 }
 
-static int x25_create(struct net *net, struct socket *sock, int protocol)
+static int x25_create(struct net *net, struct socket *sock, int protocol,
+		      int kern)
 {
 	struct sock *sk;
 	struct x25_sock *x25;