net: make getname() functions return length rather than use int* parameter

Changes since v1:
Added changes in these files:
    drivers/infiniband/hw/usnic/usnic_transport.c
    drivers/staging/lustre/lnet/lnet/lib-socket.c
    drivers/target/iscsi/iscsi_target_login.c
    drivers/vhost/net.c
    fs/dlm/lowcomms.c
    fs/ocfs2/cluster/tcp.c
    security/tomoyo/network.c

Before:
All these functions either return a negative error indicator,
or store length of sockaddr into "int *socklen" parameter
and return zero on success.

"int *socklen" parameter is awkward. For example, if caller does not
care, it still needs to provide on-stack storage for the value
it does not need.

None of the many FOO_getname() functions of various protocols
ever used old value of *socklen. They always just overwrite it.

This change drops this parameter, and makes all these functions, on success,
return length of sockaddr. It's always >= 0 and can be differentiated
from an error.

Tests in callers are changed from "if (err)" to "if (err < 0)", where needed.

rpc_sockname() lost "int buflen" parameter, since its only use was
to be passed to kernel_getsockname() as &buflen and subsequently
not used in any way.

Userspace API is not changed.

    text    data     bss      dec     hex filename
30108430 2633624  873672 33615726 200ef6e vmlinux.before.o
30108109 2633612  873672 33615393 200ee21 vmlinux.o

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: David S. Miller <davem@davemloft.net>
CC: linux-kernel@vger.kernel.org
CC: netdev@vger.kernel.org
CC: linux-bluetooth@vger.kernel.org
CC: linux-decnet-user@lists.sourceforge.net
CC: linux-wireless@vger.kernel.org
CC: linux-rdma@vger.kernel.org
CC: linux-sctp@vger.kernel.org
CC: linux-nfs@vger.kernel.org
CC: linux-x25@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/infiniband/hw/usnic/usnic_transport.c

@@ -174,14 +174,13 @@ void usnic_transport_put_socket(struct socket *sock)
 int usnic_transport_sock_get_addr(struct socket *sock, int *proto,
 					uint32_t *addr, uint16_t *port)
 {
-	int len;
 	int err;
 	struct sockaddr_in sock_addr;
 
 	err = sock->ops->getname(sock,
 				(struct sockaddr *)&sock_addr,
-				&len, 0);
-	if (err)
+				0);
+	if (err < 0)
 		return err;
 
 	if (sock_addr.sin_family != AF_INET)

drivers/isdn/mISDN/socket.c

@@ -560,7 +560,7 @@ done:
 
 static int
 data_sock_getname(struct socket *sock, struct sockaddr *addr,
-		  int *addr_len, int peer)
+		  int peer)
 {
 	struct sockaddr_mISDN	*maddr = (struct sockaddr_mISDN *) addr;
 	struct sock		*sk = sock->sk;
@@ -570,14 +570,13 @@ data_sock_getname(struct socket *sock, struct sockaddr *addr,
 
 	lock_sock(sk);
 
-	*addr_len = sizeof(*maddr);
 	maddr->family = AF_ISDN;
 	maddr->dev = _pms(sk)->dev->id;
 	maddr->channel = _pms(sk)->ch.nr;
 	maddr->sapi = _pms(sk)->ch.addr & 0xff;
 	maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff;
 	release_sock(sk);
-	return 0;
+	return sizeof(*maddr);
 }
 
 static const struct proto_ops data_sock_ops = {

drivers/net/ppp/pppoe.c

@@ -714,7 +714,7 @@ err_put:
 }
 
 static int pppoe_getname(struct socket *sock, struct sockaddr *uaddr,
-		  int *usockaddr_len, int peer)
+		  int peer)
 {
 	int len = sizeof(struct sockaddr_pppox);
 	struct sockaddr_pppox sp;
@@ -726,9 +726,7 @@ static int pppoe_getname(struct socket *sock, struct sockaddr *uaddr,
 
 	memcpy(uaddr, &sp, len);
 
-	*usockaddr_len = len;
-
-	return 0;
+	return len;
 }
 
 static int pppoe_ioctl(struct socket *sock, unsigned int cmd,

drivers/net/ppp/pptp.c

@@ -483,7 +483,7 @@ static int pptp_connect(struct socket *sock, struct sockaddr *uservaddr,
 }
 
 static int pptp_getname(struct socket *sock, struct sockaddr *uaddr,
-	int *usockaddr_len, int peer)
+	int peer)
 {
 	int len = sizeof(struct sockaddr_pppox);
 	struct sockaddr_pppox sp;
@@ -496,9 +496,7 @@ static int pptp_getname(struct socket *sock, struct sockaddr *uaddr,
 
 	memcpy(uaddr, &sp, len);
 
-	*usockaddr_len = len;
-
-	return 0;
+	return len;
 }
 
 static int pptp_release(struct socket *sock)

drivers/scsi/iscsi_tcp.c

@@ -732,7 +732,7 @@ static int iscsi_sw_tcp_conn_get_param(struct iscsi_cls_conn *cls_conn,
 	struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
 	struct iscsi_sw_tcp_conn *tcp_sw_conn = tcp_conn->dd_data;
 	struct sockaddr_in6 addr;
-	int rc, len;
+	int rc;
 
 	switch(param) {
 	case ISCSI_PARAM_CONN_PORT:
@@ -745,12 +745,12 @@ static int iscsi_sw_tcp_conn_get_param(struct iscsi_cls_conn *cls_conn,
 		}
 		if (param == ISCSI_PARAM_LOCAL_PORT)
 			rc = kernel_getsockname(tcp_sw_conn->sock,
-						(struct sockaddr *)&addr, &len);
+						(struct sockaddr *)&addr);
 		else
 			rc = kernel_getpeername(tcp_sw_conn->sock,
-						(struct sockaddr *)&addr, &len);
+						(struct sockaddr *)&addr);
 		spin_unlock_bh(&conn->session->frwd_lock);
-		if (rc)
+		if (rc < 0)
 			return rc;
 
 		return iscsi_conn_get_addr_param((struct sockaddr_storage *)
@@ -771,7 +771,7 @@ static int iscsi_sw_tcp_host_get_param(struct Scsi_Host *shost,
 	struct iscsi_tcp_conn *tcp_conn;
 	struct iscsi_sw_tcp_conn *tcp_sw_conn;
 	struct sockaddr_in6 addr;
-	int rc, len;
+	int rc;
 
 	switch (param) {
 	case ISCSI_HOST_PARAM_IPADDRESS:
@@ -793,9 +793,9 @@ static int iscsi_sw_tcp_host_get_param(struct Scsi_Host *shost,
 		}
 
 		rc = kernel_getsockname(tcp_sw_conn->sock,
-					(struct sockaddr *)&addr, &len);
+					(struct sockaddr *)&addr);
 		spin_unlock_bh(&session->frwd_lock);
-		if (rc)
+		if (rc < 0)
 			return rc;
 
 		return iscsi_conn_get_addr_param((struct sockaddr_storage *)

drivers/soc/qcom/qmi_interface.c

@@ -586,7 +586,6 @@ static struct socket *qmi_sock_create(struct qmi_handle *qmi,
 				      struct sockaddr_qrtr *sq)
 {
 	struct socket *sock;
-	int sl = sizeof(*sq);
 	int ret;
 
 	ret = sock_create_kern(&init_net, AF_QIPCRTR, SOCK_DGRAM,
@@ -594,7 +593,7 @@ static struct socket *qmi_sock_create(struct qmi_handle *qmi,
 	if (ret < 0)
 		return ERR_PTR(ret);
 
-	ret = kernel_getsockname(sock, (struct sockaddr *)sq, &sl);
+	ret = kernel_getsockname(sock, (struct sockaddr *)sq);
 	if (ret < 0) {
 		sock_release(sock);
 		return ERR_PTR(ret);

drivers/staging/ipx/af_ipx.c

@@ -1577,7 +1577,7 @@ out:
 
 
 static int ipx_getname(struct socket *sock, struct sockaddr *uaddr,
-			int *uaddr_len, int peer)
+			int peer)
 {
 	struct ipx_address *addr;
 	struct sockaddr_ipx sipx;
@@ -1585,8 +1585,6 @@ static int ipx_getname(struct socket *sock, struct sockaddr *uaddr,
 	struct ipx_sock *ipxs = ipx_sk(sk);
 	int rc;
 
-	*uaddr_len = sizeof(struct sockaddr_ipx);
-
 	lock_sock(sk);
 	if (peer) {
 		rc = -ENOTCONN;
@@ -1620,7 +1618,7 @@ static int ipx_getname(struct socket *sock, struct sockaddr *uaddr,
 	sipx.sipx_zero	 = 0;
 	memcpy(uaddr, &sipx, sizeof(sipx));
 
-	rc = 0;
+	rc = sizeof(struct sockaddr_ipx);
 out:
 	release_sock(sk);
 	return rc;

drivers/staging/irda/net/af_irda.c

@@ -697,7 +697,7 @@ static int irda_discover_daddr_and_lsap_sel(struct irda_sock *self, char *name)
  *
  */
 static int irda_getname(struct socket *sock, struct sockaddr *uaddr,
-			int *uaddr_len, int peer)
+			int peer)
 {
 	struct sockaddr_irda saddr;
 	struct sock *sk = sock->sk;
@@ -720,11 +720,9 @@ static int irda_getname(struct socket *sock, struct sockaddr *uaddr,
 	pr_debug("%s(), tsap_sel = %#x\n", __func__, saddr.sir_lsap_sel);
 	pr_debug("%s(), addr = %08x\n", __func__, saddr.sir_addr);
 
-	/* uaddr_len come to us uninitialised */
-	*uaddr_len = sizeof (struct sockaddr_irda);
-	memcpy(uaddr, &saddr, *uaddr_len);
+	memcpy(uaddr, &saddr, sizeof (struct sockaddr_irda));
 
-	return 0;
+	return sizeof (struct sockaddr_irda);
 }
 
 /*

drivers/staging/lustre/lnet/lnet/lib-socket.c

@@ -448,14 +448,13 @@ int
 lnet_sock_getaddr(struct socket *sock, bool remote, __u32 *ip, int *port)
 {
 	struct sockaddr_in sin;
-	int len = sizeof(sin);
 	int rc;
 
 	if (remote)
-		rc = kernel_getpeername(sock, (struct sockaddr *)&sin, &len);
+		rc = kernel_getpeername(sock, (struct sockaddr *)&sin);
 	else
-		rc = kernel_getsockname(sock, (struct sockaddr *)&sin, &len);
-	if (rc) {
+		rc = kernel_getsockname(sock, (struct sockaddr *)&sin);
+	if (rc < 0) {
 		CERROR("Error %d getting sock %s IP/port\n",
 		       rc, remote ? "peer" : "local");
 		return rc;

drivers/target/iscsi/iscsi_target_login.c

@@ -1020,7 +1020,7 @@ int iscsit_accept_np(struct iscsi_np *np, struct iscsi_conn *conn)
 	struct socket *new_sock, *sock = np->np_socket;
 	struct sockaddr_in sock_in;
 	struct sockaddr_in6 sock_in6;
-	int rc, err;
+	int rc;
 
 	rc = kernel_accept(sock, &new_sock, 0);
 	if (rc < 0)
@@ -1033,8 +1033,8 @@ int iscsit_accept_np(struct iscsi_np *np, struct iscsi_conn *conn)
 		memset(&sock_in6, 0, sizeof(struct sockaddr_in6));
 
 		rc = conn->sock->ops->getname(conn->sock,
-				(struct sockaddr *)&sock_in6, &err, 1);
-		if (!rc) {
+				(struct sockaddr *)&sock_in6, 1);
+		if (rc >= 0) {
 			if (!ipv6_addr_v4mapped(&sock_in6.sin6_addr)) {
 				memcpy(&conn->login_sockaddr, &sock_in6, sizeof(sock_in6));
 			} else {
@@ -1047,8 +1047,8 @@ int iscsit_accept_np(struct iscsi_np *np, struct iscsi_conn *conn)
 		}
 
 		rc = conn->sock->ops->getname(conn->sock,
-				(struct sockaddr *)&sock_in6, &err, 0);
-		if (!rc) {
+				(struct sockaddr *)&sock_in6, 0);
+		if (rc >= 0) {
 			if (!ipv6_addr_v4mapped(&sock_in6.sin6_addr)) {
 				memcpy(&conn->local_sockaddr, &sock_in6, sizeof(sock_in6));
 			} else {
@@ -1063,13 +1063,13 @@ int iscsit_accept_np(struct iscsi_np *np, struct iscsi_conn *conn)
 		memset(&sock_in, 0, sizeof(struct sockaddr_in));
 
 		rc = conn->sock->ops->getname(conn->sock,
-				(struct sockaddr *)&sock_in, &err, 1);
-		if (!rc)
+				(struct sockaddr *)&sock_in, 1);
+		if (rc >= 0)
 			memcpy(&conn->login_sockaddr, &sock_in, sizeof(sock_in));
 
 		rc = conn->sock->ops->getname(conn->sock,
-				(struct sockaddr *)&sock_in, &err, 0);
-		if (!rc)
+				(struct sockaddr *)&sock_in, 0);
+		if (rc >= 0)
 			memcpy(&conn->local_sockaddr, &sock_in, sizeof(sock_in));
 	}
 

drivers/vhost/net.c

@@ -1038,7 +1038,7 @@ static struct socket *get_raw_socket(int fd)
 		struct sockaddr_ll sa;
 		char  buf[MAX_ADDR_LEN];
 	} uaddr;
-	int uaddr_len = sizeof uaddr, r;
+	int r;
 	struct socket *sock = sockfd_lookup(fd, &r);
 
 	if (!sock)
@@ -1050,9 +1050,8 @@ static struct socket *get_raw_socket(int fd)
 		goto err;
 	}
 
-	r = sock->ops->getname(sock, (struct sockaddr *)&uaddr.sa,
-			       &uaddr_len, 0);
-	if (r)
+	r = sock->ops->getname(sock, (struct sockaddr *)&uaddr.sa, 0);
+	if (r < 0)
 		goto err;
 
 	if (uaddr.sa.sll_family != AF_PACKET) {

fs/dlm/lowcomms.c

@@ -482,7 +482,6 @@ static void lowcomms_error_report(struct sock *sk)
 {
 	struct connection *con;
 	struct sockaddr_storage saddr;
-	int buflen;
 	void (*orig_report)(struct sock *) = NULL;
 
 	read_lock_bh(&sk->sk_callback_lock);
@@ -492,7 +491,7 @@ static void lowcomms_error_report(struct sock *sk)
 
 	orig_report = listen_sock.sk_error_report;
 	if (con->sock == NULL ||
-	    kernel_getpeername(con->sock, (struct sockaddr *)&saddr, &buflen)) {
+	    kernel_getpeername(con->sock, (struct sockaddr *)&saddr) < 0) {
 		printk_ratelimited(KERN_ERR "dlm: node %d: socket error "
 				   "sending to node %d, port %d, "
 				   "sk_err=%d/%d\n", dlm_our_nodeid(),
@@ -757,8 +756,8 @@ static int tcp_accept_from_sock(struct connection *con)
 
 	/* Get the connected socket's peer */
 	memset(&peeraddr, 0, sizeof(peeraddr));
-	if (newsock->ops->getname(newsock, (struct sockaddr *)&peeraddr,
-				  &len, 2)) {
+	len = newsock->ops->getname(newsock, (struct sockaddr *)&peeraddr, 2);
+	if (len < 0) {
 		result = -ECONNABORTED;
 		goto accept_err;
 	}

fs/ocfs2/cluster/tcp.c

@@ -1819,7 +1819,7 @@ int o2net_register_hb_callbacks(void)
 
 static int o2net_accept_one(struct socket *sock, int *more)
 {
-	int ret, slen;
+	int ret;
 	struct sockaddr_in sin;
 	struct socket *new_sock = NULL;
 	struct o2nm_node *node = NULL;
@@ -1864,9 +1864,7 @@ static int o2net_accept_one(struct socket *sock, int *more)
 		goto out;
 	}
 
-	slen = sizeof(sin);
-	ret = new_sock->ops->getname(new_sock, (struct sockaddr *) &sin,
-				       &slen, 1);
+	ret = new_sock->ops->getname(new_sock, (struct sockaddr *) &sin, 1);
 	if (ret < 0)
 		goto out;
 

include/linux/net.h

@@ -146,7 +146,7 @@ struct proto_ops {
 				      struct socket *newsock, int flags, bool kern);
 	int		(*getname)   (struct socket *sock,
 				      struct sockaddr *addr,
-				      int *sockaddr_len, int peer);
+				      int peer);
 	__poll_t	(*poll)	     (struct file *file, struct socket *sock,
 				      struct poll_table_struct *wait);
 	int		(*ioctl)     (struct socket *sock, unsigned int cmd,
@@ -294,10 +294,8 @@ int kernel_listen(struct socket *sock, int backlog);
 int kernel_accept(struct socket *sock, struct socket **newsock, int flags);
 int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen,
 		   int flags);
-int kernel_getsockname(struct socket *sock, struct sockaddr *addr,
-		       int *addrlen);
-int kernel_getpeername(struct socket *sock, struct sockaddr *addr,
-		       int *addrlen);
+int kernel_getsockname(struct socket *sock, struct sockaddr *addr);
+int kernel_getpeername(struct socket *sock, struct sockaddr *addr);
 int kernel_getsockopt(struct socket *sock, int level, int optname, char *optval,
 		      int *optlen);
 int kernel_setsockopt(struct socket *sock, int level, int optname, char *optval,

include/net/inet_common.h

@@ -32,7 +32,7 @@ int inet_shutdown(struct socket *sock, int how);
 int inet_listen(struct socket *sock, int backlog);
 void inet_sock_destruct(struct sock *sk);
 int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len);
-int inet_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len,
+int inet_getname(struct socket *sock, struct sockaddr *uaddr,
 		 int peer);
 int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
 int inet_ctl_sock_create(struct sock **sk, unsigned short family,

include/net/ipv6.h

@@ -1056,7 +1056,7 @@ void ipv6_local_rxpmtu(struct sock *sk, struct flowi6 *fl6, u32 mtu);
 
 int inet6_release(struct socket *sock);
 int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len);
-int inet6_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len,
+int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
 		  int peer);
 int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
 

include/net/sock.h

@@ -1584,7 +1584,7 @@ int sock_no_bind(struct socket *, struct sockaddr *, int);
 int sock_no_connect(struct socket *, struct sockaddr *, int, int);
 int sock_no_socketpair(struct socket *, struct socket *);
 int sock_no_accept(struct socket *, struct socket *, int, bool);
-int sock_no_getname(struct socket *, struct sockaddr *, int *, int);
+int sock_no_getname(struct socket *, struct sockaddr *, int);
 __poll_t sock_no_poll(struct file *, struct socket *,
 			  struct poll_table_struct *);
 int sock_no_ioctl(struct socket *, unsigned int, unsigned long);

net/appletalk/ddp.c

@@ -1238,7 +1238,7 @@ out:
  * fields into the sockaddr.
  */
 static int atalk_getname(struct socket *sock, struct sockaddr *uaddr,
-			 int *uaddr_len, int peer)
+			 int peer)
 {
 	struct sockaddr_at sat;
 	struct sock *sk = sock->sk;
@@ -1251,7 +1251,6 @@ static int atalk_getname(struct socket *sock, struct sockaddr *uaddr,
 		if (atalk_autobind(sk) < 0)
 			goto out;
 
-	*uaddr_len = sizeof(struct sockaddr_at);
 	memset(&sat, 0, sizeof(sat));
 
 	if (peer) {
@@ -1268,9 +1267,9 @@ static int atalk_getname(struct socket *sock, struct sockaddr *uaddr,
 		sat.sat_port	    = at->src_port;
 	}
 
-	err = 0;
 	sat.sat_family = AF_APPLETALK;
 	memcpy(uaddr, &sat, sizeof(sat));
+	err = sizeof(struct sockaddr_at);
 
 out:
 	release_sock(sk);

net/atm/pvc.c

@@ -87,21 +87,20 @@ static int pvc_getsockopt(struct socket *sock, int level, int optname,
 }
 
 static int pvc_getname(struct socket *sock, struct sockaddr *sockaddr,
-		       int *sockaddr_len, int peer)
+		       int peer)
 {
 	struct sockaddr_atmpvc *addr;
 	struct atm_vcc *vcc = ATM_SD(sock);
 
 	if (!vcc->dev || !test_bit(ATM_VF_ADDR, &vcc->flags))
 		return -ENOTCONN;
-	*sockaddr_len = sizeof(struct sockaddr_atmpvc);
 	addr = (struct sockaddr_atmpvc *)sockaddr;
 	memset(addr, 0, sizeof(*addr));
 	addr->sap_family = AF_ATMPVC;
 	addr->sap_addr.itf = vcc->dev->number;
 	addr->sap_addr.vpi = vcc->vpi;
 	addr->sap_addr.vci = vcc->vci;
-	return 0;
+	return sizeof(struct sockaddr_atmpvc);
 }
 
 static const struct proto_ops pvc_proto_ops = {

net/atm/svc.c

@@ -419,15 +419,14 @@ out:
 }
 
 static int svc_getname(struct socket *sock, struct sockaddr *sockaddr,
-		       int *sockaddr_len, int peer)
+		       int peer)
 {
 	struct sockaddr_atmsvc *addr;
 
-	*sockaddr_len = sizeof(struct sockaddr_atmsvc);
 	addr = (struct sockaddr_atmsvc *) sockaddr;
 	memcpy(addr, peer ? &ATM_SD(sock)->remote : &ATM_SD(sock)->local,
 	       sizeof(struct sockaddr_atmsvc));
-	return 0;
+	return sizeof(struct sockaddr_atmsvc);
 }
 
 int svc_change_qos(struct atm_vcc *vcc, struct atm_qos *qos)

net/ax25/af_ax25.c

@@ -1388,7 +1388,7 @@ out:
 }
 
 static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
-	int *uaddr_len, int peer)
+	int peer)
 {
 	struct full_sockaddr_ax25 *fsa = (struct full_sockaddr_ax25 *)uaddr;
 	struct sock *sk = sock->sk;
@@ -1427,7 +1427,7 @@ static int ax25_getname(struct socket *sock, struct sockaddr *uaddr,
 			fsa->fsa_digipeater[0] = null_ax25_address;
 		}
 	}
-	*uaddr_len = sizeof (struct full_sockaddr_ax25);
+	err = sizeof (struct full_sockaddr_ax25);
 
 out:
 	release_sock(sk);

net/bluetooth/hci_sock.c

@@ -1340,7 +1340,7 @@ done:
 }
 
 static int hci_sock_getname(struct socket *sock, struct sockaddr *addr,
-			    int *addr_len, int peer)
+			    int peer)
 {
 	struct sockaddr_hci *haddr = (struct sockaddr_hci *)addr;
 	struct sock *sk = sock->sk;
@@ -1360,10 +1360,10 @@ static int hci_sock_getname(struct socket *sock, struct sockaddr *addr,
 		goto done;
 	}
 
-	*addr_len = sizeof(*haddr);
 	haddr->hci_family = AF_BLUETOOTH;
 	haddr->hci_dev    = hdev->id;
 	haddr->hci_channel= hci_pi(sk)->channel;
+	err = sizeof(*haddr);
 
 done:
 	release_sock(sk);

net/bluetooth/l2cap_sock.c

@@ -358,7 +358,7 @@ done:
 }
 
 static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr,
-			      int *len, int peer)
+			      int peer)
 {
 	struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr;
 	struct sock *sk = sock->sk;
@@ -373,7 +373,6 @@ static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr,
 
 	memset(la, 0, sizeof(struct sockaddr_l2));
 	addr->sa_family = AF_BLUETOOTH;
-	*len = sizeof(struct sockaddr_l2);
 
 	la->l2_psm = chan->psm;
 
@@ -387,7 +386,7 @@ static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr,
 		la->l2_bdaddr_type = chan->src_type;
 	}
 
-	return 0;
+	return sizeof(struct sockaddr_l2);
 }
 
 static int l2cap_sock_getsockopt_old(struct socket *sock, int optname,

net/bluetooth/rfcomm/sock.c

@@ -533,7 +533,7 @@ done:
 	return err;
 }
 
-static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer)
+static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int peer)
 {
 	struct sockaddr_rc *sa = (struct sockaddr_rc *) addr;
 	struct sock *sk = sock->sk;
@@ -552,8 +552,7 @@ static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *
 	else
 		bacpy(&sa->rc_bdaddr, &rfcomm_pi(sk)->src);
 
-	*len = sizeof(struct sockaddr_rc);
-	return 0;
+	return sizeof(struct sockaddr_rc);
 }
 
 static int rfcomm_sock_sendmsg(struct socket *sock, struct msghdr *msg,

net/bluetooth/sco.c

@@ -680,7 +680,7 @@ done:
 }
 
 static int sco_sock_getname(struct socket *sock, struct sockaddr *addr,
-			    int *len, int peer)
+			    int peer)
 {
 	struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
 	struct sock *sk = sock->sk;
@@ -688,14 +688,13 @@ static int sco_sock_getname(struct socket *sock, struct sockaddr *addr,
 	BT_DBG("sock %p, sk %p", sock, sk);
 
 	addr->sa_family = AF_BLUETOOTH;
-	*len = sizeof(struct sockaddr_sco);
 
 	if (peer)
 		bacpy(&sa->sco_bdaddr, &sco_pi(sk)->dst);
 	else
 		bacpy(&sa->sco_bdaddr, &sco_pi(sk)->src);
 
-	return 0;
+	return sizeof(struct sockaddr_sco);
 }
 
 static int sco_sock_sendmsg(struct socket *sock, struct msghdr *msg,

net/can/raw.c

@@ -470,7 +470,7 @@ static int raw_bind(struct socket *sock, struct sockaddr *uaddr, int len)
 }
 
 static int raw_getname(struct socket *sock, struct sockaddr *uaddr,
-		       int *len, int peer)
+		       int peer)
 {
 	struct sockaddr_can *addr = (struct sockaddr_can *)uaddr;
 	struct sock *sk = sock->sk;
@@ -483,9 +483,7 @@ static int raw_getname(struct socket *sock, struct sockaddr *uaddr,
 	addr->can_family  = AF_CAN;
 	addr->can_ifindex = ro->ifindex;
 
-	*len = sizeof(*addr);
-
-	return 0;
+	return sizeof(*addr);
 }
 
 static int raw_setsockopt(struct socket *sock, int level, int optname,

net/core/sock.c

@@ -1274,7 +1274,8 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
 	{
 		char address[128];
 
-		if (sock->ops->getname(sock, (struct sockaddr *)address, &lv, 2))
+		lv = sock->ops->getname(sock, (struct sockaddr *)address, 2);
+		if (lv < 0)
 			return -ENOTCONN;
 		if (lv < len)
 			return -EINVAL;
@@ -2497,7 +2498,7 @@ int sock_no_accept(struct socket *sock, struct socket *newsock, int flags,
 EXPORT_SYMBOL(sock_no_accept);
 
 int sock_no_getname(struct socket *sock, struct sockaddr *saddr,
-		    int *len, int peer)
+		    int peer)
 {
 	return -EOPNOTSUPP;
 }

net/decnet/af_decnet.c

@@ -1180,14 +1180,12 @@ static int dn_accept(struct socket *sock, struct socket *newsock, int flags,
 }
 
 
-static int dn_getname(struct socket *sock, struct sockaddr *uaddr,int *uaddr_len,int peer)
+static int dn_getname(struct socket *sock, struct sockaddr *uaddr,int peer)
 {
 	struct sockaddr_dn *sa = (struct sockaddr_dn *)uaddr;
 	struct sock *sk = sock->sk;
 	struct dn_scp *scp = DN_SK(sk);
 
-	*uaddr_len = sizeof(struct sockaddr_dn);
-
 	lock_sock(sk);
 
 	if (peer) {
@@ -1205,7 +1203,7 @@ static int dn_getname(struct socket *sock, struct sockaddr *uaddr,int *uaddr_len
 
 	release_sock(sk);
 
-	return 0;
+	return sizeof(struct sockaddr_dn);
 }
 
 

net/ipv4/af_inet.c

@@ -723,7 +723,7 @@ EXPORT_SYMBOL(inet_accept);
  *	This does both peername and sockname.
  */
 int inet_getname(struct socket *sock, struct sockaddr *uaddr,
-			int *uaddr_len, int peer)
+			int peer)
 {
 	struct sock *sk		= sock->sk;
 	struct inet_sock *inet	= inet_sk(sk);
@@ -745,8 +745,7 @@ int inet_getname(struct socket *sock, struct sockaddr *uaddr,
 		sin->sin_addr.s_addr = addr;
 	}
 	memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
-	*uaddr_len = sizeof(*sin);
-	return 0;
+	return sizeof(*sin);
 }
 EXPORT_SYMBOL(inet_getname);
 

net/ipv6/af_inet6.c

@@ -470,7 +470,7 @@ EXPORT_SYMBOL_GPL(inet6_destroy_sock);
  */
 
 int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
-		 int *uaddr_len, int peer)
+		 int peer)
 {
 	struct sockaddr_in6 *sin = (struct sockaddr_in6 *)uaddr;
 	struct sock *sk = sock->sk;
@@ -500,8 +500,7 @@ int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
 	}
 	sin->sin6_scope_id = ipv6_iface_scope_id(&sin->sin6_addr,
 						 sk->sk_bound_dev_if);
-	*uaddr_len = sizeof(*sin);
-	return 0;
+	return sizeof(*sin);
 }
 EXPORT_SYMBOL(inet6_getname);
 

net/iucv/af_iucv.c

@@ -989,14 +989,13 @@ done:
 }
 
 static int iucv_sock_getname(struct socket *sock, struct sockaddr *addr,
-			     int *len, int peer)
+			     int peer)
 {
 	struct sockaddr_iucv *siucv = (struct sockaddr_iucv *) addr;
 	struct sock *sk = sock->sk;
 	struct iucv_sock *iucv = iucv_sk(sk);
 
 	addr->sa_family = AF_IUCV;
-	*len = sizeof(struct sockaddr_iucv);
 
 	if (peer) {
 		memcpy(siucv->siucv_user_id, iucv->dst_user_id, 8);
@@ -1009,7 +1008,7 @@ static int iucv_sock_getname(struct socket *sock, struct sockaddr *addr,
 	memset(&siucv->siucv_addr, 0, sizeof(siucv->siucv_addr));
 	memset(&siucv->siucv_nodeid, 0, sizeof(siucv->siucv_nodeid));
 
-	return 0;
+	return sizeof(struct sockaddr_iucv);
 }
 
 /**

net/l2tp/l2tp_ip.c

@@ -349,7 +349,7 @@ static int l2tp_ip_disconnect(struct sock *sk, int flags)
 }
 
 static int l2tp_ip_getname(struct socket *sock, struct sockaddr *uaddr,
-			   int *uaddr_len, int peer)
+			   int peer)
 {
 	struct sock *sk		= sock->sk;
 	struct inet_sock *inet	= inet_sk(sk);
@@ -370,8 +370,7 @@ static int l2tp_ip_getname(struct socket *sock, struct sockaddr *uaddr,
 		lsa->l2tp_conn_id = lsk->conn_id;
 		lsa->l2tp_addr.s_addr = addr;
 	}
-	*uaddr_len = sizeof(*lsa);
-	return 0;
+	return sizeof(*lsa);
 }
 
 static int l2tp_ip_backlog_recv(struct sock *sk, struct sk_buff *skb)

net/l2tp/l2tp_ip6.c

@@ -421,7 +421,7 @@ static int l2tp_ip6_disconnect(struct sock *sk, int flags)
 }
 
 static int l2tp_ip6_getname(struct socket *sock, struct sockaddr *uaddr,
-			    int *uaddr_len, int peer)
+			    int peer)
 {
 	struct sockaddr_l2tpip6 *lsa = (struct sockaddr_l2tpip6 *)uaddr;
 	struct sock *sk = sock->sk;
@@ -449,8 +449,7 @@ static int l2tp_ip6_getname(struct socket *sock, struct sockaddr *uaddr,
 	}
 	if (ipv6_addr_type(&lsa->l2tp_addr) & IPV6_ADDR_LINKLOCAL)
 		lsa->l2tp_scope_id = sk->sk_bound_dev_if;
-	*uaddr_len = sizeof(*lsa);
-	return 0;
+	return sizeof(*lsa);
 }
 
 static int l2tp_ip6_backlog_recv(struct sock *sk, struct sk_buff *skb)

net/l2tp/l2tp_ppp.c

@@ -870,7 +870,7 @@ err:
 /* getname() support.
  */
 static int pppol2tp_getname(struct socket *sock, struct sockaddr *uaddr,
-			    int *usockaddr_len, int peer)
+			    int peer)
 {
 	int len = 0;
 	int error = 0;
@@ -969,8 +969,7 @@ static int pppol2tp_getname(struct socket *sock, struct sockaddr *uaddr,
 		memcpy(uaddr, &sp, len);
 	}
 
-	*usockaddr_len = len;
-	error = 0;
+	error = len;
 
 	sock_put(sk);
 end:

net/llc/af_llc.c

@@ -971,7 +971,7 @@ release:
  *	Return the address information of a socket.
  */
 static int llc_ui_getname(struct socket *sock, struct sockaddr *uaddr,
-			  int *uaddrlen, int peer)
+			  int peer)
 {
 	struct sockaddr_llc sllc;
 	struct sock *sk = sock->sk;
@@ -982,7 +982,6 @@ static int llc_ui_getname(struct socket *sock, struct sockaddr *uaddr,
 	lock_sock(sk);
 	if (sock_flag(sk, SOCK_ZAPPED))
 		goto out;
-	*uaddrlen = sizeof(sllc);
 	if (peer) {
 		rc = -ENOTCONN;
 		if (sk->sk_state != TCP_ESTABLISHED)
@@ -1003,9 +1002,9 @@ static int llc_ui_getname(struct socket *sock, struct sockaddr *uaddr,
 			       IFHWADDRLEN);
 		}
 	}
-	rc = 0;
 	sllc.sllc_family = AF_LLC;
 	memcpy(uaddr, &sllc, sizeof(sllc));
+	rc = sizeof(sllc);
 out:
 	release_sock(sk);
 	return rc;

net/netlink/af_netlink.c

@@ -1105,7 +1105,7 @@ static int netlink_connect(struct socket *sock, struct sockaddr *addr,
 }
 
 static int netlink_getname(struct socket *sock, struct sockaddr *addr,
-			   int *addr_len, int peer)
+			   int peer)
 {
 	struct sock *sk = sock->sk;
 	struct netlink_sock *nlk = nlk_sk(sk);
@@ -1113,7 +1113,6 @@ static int netlink_getname(struct socket *sock, struct sockaddr *addr,
 
 	nladdr->nl_family = AF_NETLINK;
 	nladdr->nl_pad = 0;
-	*addr_len = sizeof(*nladdr);
 
 	if (peer) {
 		nladdr->nl_pid = nlk->dst_portid;
@@ -1124,7 +1123,7 @@ static int netlink_getname(struct socket *sock, struct sockaddr *addr,
 		nladdr->nl_groups = nlk->groups ? nlk->groups[0] : 0;
 		netlink_unlock_table();
 	}
-	return 0;
+	return sizeof(*nladdr);
 }
 
 static int netlink_ioctl(struct socket *sock, unsigned int cmd,

net/netrom/af_netrom.c

@@ -829,11 +829,12 @@ out_release:
 }
 
 static int nr_getname(struct socket *sock, struct sockaddr *uaddr,
-	int *uaddr_len, int peer)
+	int peer)
 {
 	struct full_sockaddr_ax25 *sax = (struct full_sockaddr_ax25 *)uaddr;
 	struct sock *sk = sock->sk;
 	struct nr_sock *nr = nr_sk(sk);
+	int uaddr_len;
 
 	memset(&sax->fsa_ax25, 0, sizeof(struct sockaddr_ax25));
 
@@ -848,16 +849,16 @@ static int nr_getname(struct socket *sock, struct sockaddr *uaddr,
 		sax->fsa_ax25.sax25_call   = nr->user_addr;
 		memset(sax->fsa_digipeater, 0, sizeof(sax->fsa_digipeater));
 		sax->fsa_digipeater[0]     = nr->dest_addr;
-		*uaddr_len = sizeof(struct full_sockaddr_ax25);
+		uaddr_len = sizeof(struct full_sockaddr_ax25);
 	} else {
 		sax->fsa_ax25.sax25_family = AF_NETROM;
 		sax->fsa_ax25.sax25_ndigis = 0;
 		sax->fsa_ax25.sax25_call   = nr->source_addr;
-		*uaddr_len = sizeof(struct sockaddr_ax25);
+		uaddr_len = sizeof(struct sockaddr_ax25);
 	}
 	release_sock(sk);
 
-	return 0;
+	return uaddr_len;
 }
 
 int nr_rx_frame(struct sk_buff *skb, struct net_device *dev)

net/nfc/llcp_sock.c

@@ -497,7 +497,7 @@ error:
 }
 
 static int llcp_sock_getname(struct socket *sock, struct sockaddr *uaddr,
-			     int *len, int peer)
+			     int peer)
 {
 	struct sock *sk = sock->sk;
 	struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
@@ -510,7 +510,6 @@ static int llcp_sock_getname(struct socket *sock, struct sockaddr *uaddr,
 		 llcp_sock->dsap, llcp_sock->ssap);
 
 	memset(llcp_addr, 0, sizeof(*llcp_addr));
-	*len = sizeof(struct sockaddr_nfc_llcp);
 
 	lock_sock(sk);
 	if (!llcp_sock->dev) {
@@ -528,7 +527,7 @@ static int llcp_sock_getname(struct socket *sock, struct sockaddr *uaddr,
 	       llcp_addr->service_name_len);
 	release_sock(sk);
 
-	return 0;
+	return sizeof(struct sockaddr_nfc_llcp);
 }
 
 static inline __poll_t llcp_accept_poll(struct sock *parent)

net/packet/af_packet.c

@@ -3409,7 +3409,7 @@ out:
 }
 
 static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr,
-			       int *uaddr_len, int peer)
+			       int peer)
 {
 	struct net_device *dev;
 	struct sock *sk	= sock->sk;
@@ -3424,13 +3424,12 @@ static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr,
 	if (dev)
 		strlcpy(uaddr->sa_data, dev->name, sizeof(uaddr->sa_data));
 	rcu_read_unlock();
-	*uaddr_len = sizeof(*uaddr);
 
-	return 0;
+	return sizeof(*uaddr);
 }
 
 static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
-			  int *uaddr_len, int peer)
+			  int peer)
 {
 	struct net_device *dev;
 	struct sock *sk = sock->sk;
@@ -3455,9 +3454,8 @@ static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
 		sll->sll_halen = 0;
 	}
 	rcu_read_unlock();
-	*uaddr_len = offsetof(struct sockaddr_ll, sll_addr) + sll->sll_halen;
 
-	return 0;
+	return offsetof(struct sockaddr_ll, sll_addr) + sll->sll_halen;
 }
 
 static int packet_dev_mc(struct net_device *dev, struct packet_mclist *i,

net/phonet/socket.c

@@ -326,7 +326,7 @@ static int pn_socket_accept(struct socket *sock, struct socket *newsock,
 }
 
 static int pn_socket_getname(struct socket *sock, struct sockaddr *addr,
-				int *sockaddr_len, int peer)
+				int peer)
 {
 	struct sock *sk = sock->sk;
 	struct pn_sock *pn = pn_sk(sk);
@@ -337,8 +337,7 @@ static int pn_socket_getname(struct socket *sock, struct sockaddr *addr,
 		pn_sockaddr_set_object((struct sockaddr_pn *)addr,
 					pn->sobject);
 
-	*sockaddr_len = sizeof(struct sockaddr_pn);
-	return 0;
+	return sizeof(struct sockaddr_pn);
 }
 
 static __poll_t pn_socket_poll(struct file *file, struct socket *sock,

net/qrtr/qrtr.c

@@ -893,7 +893,7 @@ static int qrtr_connect(struct socket *sock, struct sockaddr *saddr,
 }
 
 static int qrtr_getname(struct socket *sock, struct sockaddr *saddr,
-			int *len, int peer)
+			int peer)
 {
 	struct qrtr_sock *ipc = qrtr_sk(sock->sk);
 	struct sockaddr_qrtr qaddr;
@@ -912,12 +912,11 @@ static int qrtr_getname(struct socket *sock, struct sockaddr *saddr,
 	}
 	release_sock(sk);
 
-	*len = sizeof(qaddr);
 	qaddr.sq_family = AF_QIPCRTR;
 
 	memcpy(saddr, &qaddr, sizeof(qaddr));
 
-	return 0;
+	return sizeof(qaddr);
 }
 
 static int qrtr_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)

net/rds/af_rds.c

@@ -110,7 +110,7 @@ void rds_wake_sk_sleep(struct rds_sock *rs)
 }
 
 static int rds_getname(struct socket *sock, struct sockaddr *uaddr,
-		       int *uaddr_len, int peer)
+		       int peer)
 {
 	struct sockaddr_in *sin = (struct sockaddr_in *)uaddr;
 	struct rds_sock *rs = rds_sk_to_rs(sock->sk);
@@ -131,8 +131,7 @@ static int rds_getname(struct socket *sock, struct sockaddr *uaddr,
 
 	sin->sin_family = AF_INET;
 
-	*uaddr_len = sizeof(*sin);
-	return 0;
+	return sizeof(*sin);
 }
 
 /*

net/rds/tcp.c

@@ -227,7 +227,6 @@ static void rds_tcp_tc_info(struct socket *rds_sock, unsigned int len,
 	struct rds_tcp_connection *tc;
 	unsigned long flags;
 	struct sockaddr_in sin;
-	int sinlen;
 	struct socket *sock;
 
 	spin_lock_irqsave(&rds_tcp_tc_list_lock, flags);
@@ -239,12 +238,10 @@ static void rds_tcp_tc_info(struct socket *rds_sock, unsigned int len,
 
 		sock = tc->t_sock;
 		if (sock) {
-			sock->ops->getname(sock, (struct sockaddr *)&sin,
-					   &sinlen, 0);
+			sock->ops->getname(sock, (struct sockaddr *)&sin, 0);
 			tsinfo.local_addr = sin.sin_addr.s_addr;
 			tsinfo.local_port = sin.sin_port;
-			sock->ops->getname(sock, (struct sockaddr *)&sin,
-					   &sinlen, 1);
+			sock->ops->getname(sock, (struct sockaddr *)&sin, 1);
 			tsinfo.peer_addr = sin.sin_addr.s_addr;
 			tsinfo.peer_port = sin.sin_port;
 		}

net/rose/af_rose.c

@@ -938,7 +938,7 @@ out_release:
 }
 
 static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
-	int *uaddr_len, int peer)
+	int peer)
 {
 	struct full_sockaddr_rose *srose = (struct full_sockaddr_rose *)uaddr;
 	struct sock *sk = sock->sk;
@@ -964,8 +964,7 @@ static int rose_getname(struct socket *sock, struct sockaddr *uaddr,
 			srose->srose_digis[n] = rose->source_digis[n];
 	}
 
-	*uaddr_len = sizeof(struct full_sockaddr_rose);
-	return 0;
+	return sizeof(struct full_sockaddr_rose);
 }
 
 int rose_rx_call_request(struct sk_buff *skb, struct net_device *dev, struct rose_neigh *neigh, unsigned int lci)

net/sctp/ipv6.c

@@ -952,16 +952,16 @@ static int sctp_inet6_supported_addrs(const struct sctp_sock *opt,
 
 /* Handle SCTP_I_WANT_MAPPED_V4_ADDR for getpeername() and getsockname() */
 static int sctp_getname(struct socket *sock, struct sockaddr *uaddr,
-			int *uaddr_len, int peer)
+			int peer)
 {
 	int rc;
 
-	rc = inet6_getname(sock, uaddr, uaddr_len, peer);
+	rc = inet6_getname(sock, uaddr, peer);
 
-	if (rc != 0)
+	if (rc < 0)
 		return rc;
 
-	*uaddr_len = sctp_v6_addr_to_user(sctp_sk(sock->sk),
+	rc = sctp_v6_addr_to_user(sctp_sk(sock->sk),
 					  (union sctp_addr *)uaddr);
 
 	return rc;

net/smc/af_smc.c

@@ -281,7 +281,6 @@ int smc_netinfo_by_tcpsk(struct socket *clcsock,
 	struct in_device *in_dev;
 	struct sockaddr_in addr;
 	int rc = -ENOENT;
-	int len;
 
 	if (!dst) {
 		rc = -ENOTCONN;
@@ -293,7 +292,7 @@ int smc_netinfo_by_tcpsk(struct socket *clcsock,
 	}
 
 	/* get address to which the internal TCP socket is bound */
-	kernel_getsockname(clcsock, (struct sockaddr *)&addr, &len);
+	kernel_getsockname(clcsock, (struct sockaddr *)&addr);
 	/* analyze IPv4 specific data of net_device belonging to TCP socket */
 	rcu_read_lock();
 	in_dev = __in_dev_get_rcu(dst->dev);
@@ -771,7 +770,7 @@ static void smc_listen_work(struct work_struct *work)
 	u8 buf[SMC_CLC_MAX_LEN];
 	struct smc_link *link;
 	int reason_code = 0;
-	int rc = 0, len;
+	int rc = 0;
 	__be32 subnet;
 	u8 prefix_len;
 	u8 ibport;
@@ -824,7 +823,7 @@ static void smc_listen_work(struct work_struct *work)
 	}
 
 	/* get address of the peer connected to the internal TCP socket */
-	kernel_getpeername(newclcsock, (struct sockaddr *)&peeraddr, &len);
+	kernel_getpeername(newclcsock, (struct sockaddr *)&peeraddr);
 
 	/* allocate connection / link group */
 	mutex_lock(&smc_create_lgr_pending);
@@ -1075,7 +1074,7 @@ out:
 }
 
 static int smc_getname(struct socket *sock, struct sockaddr *addr,
-		       int *len, int peer)
+		       int peer)
 {
 	struct smc_sock *smc;
 
@@ -1085,7 +1084,7 @@ static int smc_getname(struct socket *sock, struct sockaddr *addr,
 
 	smc = smc_sk(sock->sk);
 
-	return smc->clcsock->ops->getname(smc->clcsock, addr, len, peer);
+	return smc->clcsock->ops->getname(smc->clcsock, addr, peer);
 }
 
 static int smc_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)

net/socket.c

@@ -1573,8 +1573,9 @@ SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr,
 		goto out_fd;
 
 	if (upeer_sockaddr) {
-		if (newsock->ops->getname(newsock, (struct sockaddr *)&address,
-					  &len, 2) < 0) {
+		len = newsock->ops->getname(newsock,
+					(struct sockaddr *)&address, 2);
+		if (len < 0) {
 			err = -ECONNABORTED;
 			goto out_fd;
 		}
@@ -1654,7 +1655,7 @@ SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr,
 {
 	struct socket *sock;
 	struct sockaddr_storage address;
-	int len, err, fput_needed;
+	int err, fput_needed;
 
 	sock = sockfd_lookup_light(fd, &err, &fput_needed);
 	if (!sock)
@@ -1664,10 +1665,11 @@ SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr,
 	if (err)
 		goto out_put;
 
-	err = sock->ops->getname(sock, (struct sockaddr *)&address, &len, 0);
-	if (err)
+	err = sock->ops->getname(sock, (struct sockaddr *)&address, 0);
+	if (err < 0)
 		goto out_put;
-	err = move_addr_to_user(&address, len, usockaddr, usockaddr_len);
+        /* "err" is actually length in this case */
+	err = move_addr_to_user(&address, err, usockaddr, usockaddr_len);
 
 out_put:
 	fput_light(sock->file, fput_needed);
@@ -1685,7 +1687,7 @@ SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr,
 {
 	struct socket *sock;
 	struct sockaddr_storage address;
-	int len, err, fput_needed;
+	int err, fput_needed;
 
 	sock = sockfd_lookup_light(fd, &err, &fput_needed);
 	if (sock != NULL) {
@@ -1695,11 +1697,10 @@ SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr,
 			return err;
 		}
 
-		err =
-		    sock->ops->getname(sock, (struct sockaddr *)&address, &len,
-				       1);
-		if (!err)
-			err = move_addr_to_user(&address, len, usockaddr,
+		err = sock->ops->getname(sock, (struct sockaddr *)&address, 1);
+		if (err >= 0)
+			/* "err" is actually length in this case */
+			err = move_addr_to_user(&address, err, usockaddr,
 						usockaddr_len);
 		fput_light(sock->file, fput_needed);
 	}
@@ -3166,17 +3167,15 @@ int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen,
 }
 EXPORT_SYMBOL(kernel_connect);
 
-int kernel_getsockname(struct socket *sock, struct sockaddr *addr,
-			 int *addrlen)
+int kernel_getsockname(struct socket *sock, struct sockaddr *addr)
 {
-	return sock->ops->getname(sock, addr, addrlen, 0);
+	return sock->ops->getname(sock, addr, 0);
 }
 EXPORT_SYMBOL(kernel_getsockname);
 
-int kernel_getpeername(struct socket *sock, struct sockaddr *addr,
-			 int *addrlen)
+int kernel_getpeername(struct socket *sock, struct sockaddr *addr)
 {
-	return sock->ops->getname(sock, addr, addrlen, 1);
+	return sock->ops->getname(sock, addr, 1);
 }
 EXPORT_SYMBOL(kernel_getpeername);
 

net/sunrpc/clnt.c

@@ -1231,7 +1231,7 @@ static const struct sockaddr_in6 rpc_in6addr_loopback = {
  * negative errno is returned.
  */
 static int rpc_sockname(struct net *net, struct sockaddr *sap, size_t salen,
-			struct sockaddr *buf, int buflen)
+			struct sockaddr *buf)
 {
 	struct socket *sock;
 	int err;
@@ -1269,7 +1269,7 @@ static int rpc_sockname(struct net *net, struct sockaddr *sap, size_t salen,
 		goto out_release;
 	}
 
-	err = kernel_getsockname(sock, buf, &buflen);
+	err = kernel_getsockname(sock, buf);
 	if (err < 0) {
 		dprintk("RPC:       getsockname failed (%d)\n", err);
 		goto out_release;
@@ -1353,7 +1353,7 @@ int rpc_localaddr(struct rpc_clnt *clnt, struct sockaddr *buf, size_t buflen)
 	rcu_read_unlock();
 
 	rpc_set_port(sap, 0);
-	err = rpc_sockname(net, sap, salen, buf, buflen);
+	err = rpc_sockname(net, sap, salen, buf);
 	put_net(net);
 	if (err != 0)
 		/* Couldn't discover local address, return ANYADDR */

net/sunrpc/svcsock.c

@@ -832,12 +832,13 @@ static struct svc_xprt *svc_tcp_accept(struct svc_xprt *xprt)
 	}
 	set_bit(XPT_CONN, &svsk->sk_xprt.xpt_flags);
 
-	err = kernel_getpeername(newsock, sin, &slen);
+	err = kernel_getpeername(newsock, sin);
 	if (err < 0) {
 		net_warn_ratelimited("%s: peername failed (err %d)!\n",
 				     serv->sv_name, -err);
 		goto failed;		/* aborted connection or whatever */
 	}
+	slen = err;
 
 	/* Ideally, we would want to reject connections from unauthorized
 	 * hosts here, but when we get encryption, the IP of the host won't
@@ -866,7 +867,8 @@ static struct svc_xprt *svc_tcp_accept(struct svc_xprt *xprt)
 	if (IS_ERR(newsvsk))
 		goto failed;
 	svc_xprt_set_remote(&newsvsk->sk_xprt, sin, slen);
-	err = kernel_getsockname(newsock, sin, &slen);
+	err = kernel_getsockname(newsock, sin);
+	slen = err;
 	if (unlikely(err < 0)) {
 		dprintk("svc_tcp_accept: kernel_getsockname error %d\n", -err);
 		slen = offsetof(struct sockaddr, sa_data);
@@ -1465,7 +1467,8 @@ int svc_addsock(struct svc_serv *serv, const int fd, char *name_return,
 		err = PTR_ERR(svsk);
 		goto out;
 	}
-	if (kernel_getsockname(svsk->sk_sock, sin, &salen) == 0)
+	salen = kernel_getsockname(svsk->sk_sock, sin);
+	if (salen >= 0)
 		svc_xprt_set_local(&svsk->sk_xprt, sin, salen);
 	svc_add_new_perm_xprt(serv, &svsk->sk_xprt);
 	return svc_one_sock_name(svsk, name_return, len);
@@ -1539,10 +1542,10 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv,
 	if (error < 0)
 		goto bummer;
 
-	newlen = len;
-	error = kernel_getsockname(sock, newsin, &newlen);
+	error = kernel_getsockname(sock, newsin);
 	if (error < 0)
 		goto bummer;
+	newlen = error;
 
 	if (protocol == IPPROTO_TCP) {
 		if ((error = kernel_listen(sock, 64)) < 0)

net/sunrpc/xprtsock.c

@@ -1794,10 +1794,9 @@ static void xs_sock_set_reuseport(struct socket *sock)
 static unsigned short xs_sock_getport(struct socket *sock)
 {
 	struct sockaddr_storage buf;
-	int buflen;
 	unsigned short port = 0;
 
-	if (kernel_getsockname(sock, (struct sockaddr *)&buf, &buflen) < 0)
+	if (kernel_getsockname(sock, (struct sockaddr *)&buf) < 0)
 		goto out;
 	switch (buf.ss_family) {
 	case AF_INET6:

net/tipc/socket.c

@@ -665,7 +665,7 @@ exit:
  *       a completely predictable manner).
  */
 static int tipc_getname(struct socket *sock, struct sockaddr *uaddr,
-			int *uaddr_len, int peer)
+			int peer)
 {
 	struct sockaddr_tipc *addr = (struct sockaddr_tipc *)uaddr;
 	struct sock *sk = sock->sk;
@@ -684,13 +684,12 @@ static int tipc_getname(struct socket *sock, struct sockaddr *uaddr,
 		addr->addr.id.node = tn->own_addr;
 	}
 
-	*uaddr_len = sizeof(*addr);
 	addr->addrtype = TIPC_ADDR_ID;
 	addr->family = AF_TIPC;
 	addr->scope = 0;
 	addr->addr.name.domain = 0;
 
-	return 0;
+	return sizeof(*addr);
 }
 
 /**

net/unix/af_unix.c

@@ -637,7 +637,7 @@ static int unix_stream_connect(struct socket *, struct sockaddr *,
 			       int addr_len, int flags);
 static int unix_socketpair(struct socket *, struct socket *);
 static int unix_accept(struct socket *, struct socket *, int, bool);
-static int unix_getname(struct socket *, struct sockaddr *, int *, int);
+static int unix_getname(struct socket *, struct sockaddr *, int);
 static __poll_t unix_poll(struct file *, struct socket *, poll_table *);
 static __poll_t unix_dgram_poll(struct file *, struct socket *,
 				    poll_table *);
@@ -1453,7 +1453,7 @@ out:
 }
 
 
-static int unix_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer)
+static int unix_getname(struct socket *sock, struct sockaddr *uaddr, int peer)
 {
 	struct sock *sk = sock->sk;
 	struct unix_sock *u;
@@ -1476,12 +1476,12 @@ static int unix_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_
 	if (!u->addr) {
 		sunaddr->sun_family = AF_UNIX;
 		sunaddr->sun_path[0] = 0;
-		*uaddr_len = sizeof(short);
+		err = sizeof(short);
 	} else {
 		struct unix_address *addr = u->addr;
 
-		*uaddr_len = addr->len;
-		memcpy(sunaddr, addr->name, *uaddr_len);
+		err = addr->len;
+		memcpy(sunaddr, addr->name, addr->len);
 	}
 	unix_state_unlock(sk);
 	sock_put(sk);

net/vmw_vsock/af_vsock.c

@@ -759,7 +759,7 @@ vsock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
 }
 
 static int vsock_getname(struct socket *sock,
-			 struct sockaddr *addr, int *addr_len, int peer)
+			 struct sockaddr *addr, int peer)
 {
 	int err;
 	struct sock *sk;
@@ -794,7 +794,7 @@ static int vsock_getname(struct socket *sock,
 	 */
 	BUILD_BUG_ON(sizeof(*vm_addr) > 128);
 	memcpy(addr, vm_addr, sizeof(*vm_addr));
-	*addr_len = sizeof(*vm_addr);
+	err = sizeof(*vm_addr);
 
 out:
 	release_sock(sk);

net/x25/af_x25.c

@@ -896,7 +896,7 @@ out:
 }
 
 static int x25_getname(struct socket *sock, struct sockaddr *uaddr,
-		       int *uaddr_len, int peer)
+		       int peer)
 {
 	struct sockaddr_x25 *sx25 = (struct sockaddr_x25 *)uaddr;
 	struct sock *sk = sock->sk;
@@ -913,7 +913,7 @@ static int x25_getname(struct socket *sock, struct sockaddr *uaddr,
 		sx25->sx25_addr = x25->source_addr;
 
 	sx25->sx25_family = AF_X25;
-	*uaddr_len = sizeof(*sx25);
+	rc = sizeof(*sx25);
 
 out:
 	return rc;

security/tomoyo/network.c

@@ -655,10 +655,11 @@ int tomoyo_socket_listen_permission(struct socket *sock)
 		return 0;
 	{
 		const int error = sock->ops->getname(sock, (struct sockaddr *)
-						     &addr, &addr_len, 0);
+						     &addr, 0);
 
-		if (error)
+		if (error < 0)
 			return error;
+		addr_len = error;
 	}
 	address.protocol = type;
 	address.operation = TOMOYO_NETWORK_LISTEN;