net/sock: allow the user to set negative peek offset

This is necessary to allow the user to disable peeking with
offset once it's enabled.
Unix sockets already allow the above, with this patch we
permit it for udp[6] sockets, too.

Fixes: 627d2d6b55 ("udp: enable MSG_PEEK at non-zero offset")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paolo Abeni 2017-08-23 11:57:51 +02:00 committed by David S. Miller
parent 110d8465a6
commit 257a73031d

View File

@ -2454,9 +2454,6 @@ EXPORT_SYMBOL(__sk_mem_reclaim);
int sk_set_peek_off(struct sock *sk, int val)
{
if (val < 0)
return -EINVAL;
sk->sk_peek_off = val;
return 0;
}