unix_diag: Move away from NLMSG_PUT().

And use nlmsg_data() while we're here too and remove useless
casts.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/unix/diag.c b/net/unix/diag.c
index 7e8a24b..977ca31 100644 (file)
--- a/net/unix/diag.c
+++ b/net/unix/diag.c
@@ -126,10 +126,12 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_r
        struct nlmsghdr *nlh;
        struct unix_diag_msg *rep;
 
-       nlh = NLMSG_PUT(skb, pid, seq, SOCK_DIAG_BY_FAMILY, sizeof(*rep));
+       nlh = nlmsg_put(skb, pid, seq, SOCK_DIAG_BY_FAMILY, sizeof(*rep), 0);
+       if (!nlh)
+               goto out_nlmsg_trim;
        nlh->nlmsg_flags = flags;
 
-       rep = NLMSG_DATA(nlh);
+       rep = nlmsg_data(nlh);
 
        rep->udiag_family = AF_UNIX;
        rep->udiag_type = sk->sk_type;
@@ -139,32 +141,32 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_r
 
        if ((req->udiag_show & UDIAG_SHOW_NAME) &&
            sk_diag_dump_name(sk, skb))
-               goto nlmsg_failure;
+               goto out_nlmsg_trim;
 
        if ((req->udiag_show & UDIAG_SHOW_VFS) &&
            sk_diag_dump_vfs(sk, skb))
-               goto nlmsg_failure;
+               goto out_nlmsg_trim;
 
        if ((req->udiag_show & UDIAG_SHOW_PEER) &&
            sk_diag_dump_peer(sk, skb))
-               goto nlmsg_failure;
+               goto out_nlmsg_trim;
 
        if ((req->udiag_show & UDIAG_SHOW_ICONS) &&
            sk_diag_dump_icons(sk, skb))
-               goto nlmsg_failure;
+               goto out_nlmsg_trim;
 
        if ((req->udiag_show & UDIAG_SHOW_RQLEN) &&
            sk_diag_show_rqlen(sk, skb))
-               goto nlmsg_failure;
+               goto out_nlmsg_trim;
 
        if ((req->udiag_show & UDIAG_SHOW_MEMINFO) &&
            sock_diag_put_meminfo(sk, skb, UNIX_DIAG_MEMINFO))
-               goto nlmsg_failure;
+               goto out_nlmsg_trim;
 
        nlh->nlmsg_len = skb_tail_pointer(skb) - b;
        return skb->len;
 
-nlmsg_failure:
+out_nlmsg_trim:
        nlmsg_trim(skb, b);
        return -EMSGSIZE;
 }
@@ -189,7 +191,7 @@ static int unix_diag_dump(struct sk_buff *skb, struct netlink_callback *cb)
        struct unix_diag_req *req;
        int num, s_num, slot, s_slot;
 
-       req = NLMSG_DATA(cb->nlh);
+       req = nlmsg_data(cb->nlh);
 
        s_slot = cb->args[0];
        num = s_num = cb->args[1];
@@ -309,7 +311,7 @@ static int unix_diag_handler_dump(struct sk_buff *skb, struct nlmsghdr *h)
                };
                return netlink_dump_start(sock_diag_nlsk, skb, h, &c);
        } else
-               return unix_diag_get_exact(skb, h, (struct unix_diag_req *)NLMSG_DATA(h));
+               return unix_diag_get_exact(skb, h, nlmsg_data(h));
 }
 
 static const struct sock_diag_handler unix_diag_handler = {