new helper: memcpy_to_msg()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

9 files changed, 13 insertions, 9 deletions

diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
index 850246206b12..35c93ff11f35 100644
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c
@@ -174,7 +174,7 @@ static int hash_recvmsg(struct kiocb *unused, struct socket *sock,
                         goto unlock;
         }
 
-        err = memcpy_toiovec(msg->msg_iov, ctx->result, len);
+        err = memcpy_to_msg(msg, ctx->result, len);
 
 unlock:
         release_sock(sk);
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 97dc5f8123b3..d048347a010a 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2692,6 +2692,11 @@ static inline int memcpy_from_msg(void *data, struct msghdr *msg, int len)
         return memcpy_fromiovec(data, msg->msg_iov, len);
 }
 
+static inline int memcpy_to_msg(struct msghdr *msg, void *data, int len)
+{
+        return memcpy_toiovec(msg->msg_iov, data, len);
+}
+
 struct skb_checksum_ops {
         __wsum (*update)(const void *mem, int len, __wsum wsum);
         __wsum (*combine)(__wsum csum, __wsum csum2, int offset, int len);
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
index 230f14026c11..ac618b0b8a4f 100644
--- a/net/caif/caif_socket.c
+++ b/net/caif/caif_socket.c
@@ -418,7 +418,7 @@ unlock:
                 }
                 release_sock(sk);
                 chunk = min_t(unsigned int, skb->len, size);
-                if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) {
+                if (memcpy_to_msg(msg, skb->data, chunk)) {
                         skb_queue_head(&sk->sk_receive_queue, skb);
                         if (copied == 0)
                                 copied = -EFAULT;
diff --git a/net/can/bcm.c b/net/can/bcm.c
index b9a1f715df18..01671187e3fe 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1555,7 +1555,7 @@ static int bcm_recvmsg(struct kiocb *iocb, struct socket *sock,
         if (skb->len < size)
                 size = skb->len;
 
-        err = memcpy_toiovec(msg->msg_iov, skb->data, size);
+        err = memcpy_to_msg(msg, skb->data, size);
         if (err < 0) {
                 skb_free_datagram(sk, skb);
                 return err;
diff --git a/net/can/raw.c b/net/can/raw.c
index 0e4004fb6876..dfdcffbb1070 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -750,7 +750,7 @@ static int raw_recvmsg(struct kiocb *iocb, struct socket *sock,
         else
                 size = skb->len;
 
-        err = memcpy_toiovec(msg->msg_iov, skb->data, size);
+        err = memcpy_to_msg(msg, skb->data, size);
         if (err < 0) {
                 skb_free_datagram(sk, skb);
                 return err;
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index e2e2e3cb9113..810228646de3 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -1760,7 +1760,7 @@ static int dn_recvmsg(struct kiocb *iocb, struct socket *sock,
                 if ((chunk + copied) > size)
                         chunk = size - copied;
 
-                if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) {
+                if (memcpy_to_msg(msg, skb->data, chunk)) {
                         rv = -EFAULT;
                         break;
                 }
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index c239f4740d10..435443bfc3c3 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1349,7 +1349,7 @@ static int tcp_recv_urg(struct sock *sk, struct msghdr *msg, int len, int flags)
 
                 if (len > 0) {
                         if (!(flags & MSG_TRUNC))
-                                err = memcpy_toiovec(msg->msg_iov, &c, 1);
+                                err = memcpy_to_msg(msg, &c, 1);
                         len = 1;
                 } else
                         msg->msg_flags |= MSG_TRUNC;
diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index 9052462cf42a..568edc72d737 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -1466,7 +1466,7 @@ static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock,
                 }
 
                 chunk = min_t(unsigned int, skb->len, size);
-                if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) {
+                if (memcpy_to_msg(msg, skb->data, chunk)) {
                         skb_queue_head(&sk->sk_receive_queue, skb);
                         if (copied == 0)
                                 copied = -EFAULT;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 07ac95014ecb..108d7f381b87 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2949,8 +2949,7 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock,
                         vnet_hdr.flags = VIRTIO_NET_HDR_F_DATA_VALID;
                 } /* else everything is zero */
 
-                err = memcpy_toiovec(msg->msg_iov, (void *)&vnet_hdr,
-                                     vnet_hdr_len);
+                err = memcpy_to_msg(msg, (void *)&vnet_hdr, vnet_hdr_len);
                 if (err < 0)
                         goto out_free;
         }