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SubjectRE: [PATCH 2/4] sctp: refactor sctp_setsockopt_bindx
Date
From: Marcelo Ricardo Leitner
> Sent: 29 May 2020 17:06
> On Fri, May 29, 2020 at 02:09:41PM +0200, Christoph Hellwig wrote:
> > Split out a sctp_setsockopt_bindx_kernel that takes a kernel pointer
> > to the sockaddr and make sctp_setsockopt_bindx a small wrapper around
> > it. This prepares for adding a new bind_add proto op.
> >
> > Signed-off-by: Christoph Hellwig <hch@lst.de>
>
> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
>
> > ---
> > net/sctp/socket.c | 61 ++++++++++++++++++++++-------------------------
> > 1 file changed, 28 insertions(+), 33 deletions(-)
> >
> > diff --git a/net/sctp/socket.c b/net/sctp/socket.c
> > index 827a9903ee288..6e745ac3c4a59 100644
> > --- a/net/sctp/socket.c
> > +++ b/net/sctp/socket.c
> > @@ -972,23 +972,22 @@ int sctp_asconf_mgmt(struct sctp_sock *sp, struct sctp_sockaddr_entry *addrw)
> > * it.
> > *
> > * sk The sk of the socket
> > - * addrs The pointer to the addresses in user land
> > + * addrs The pointer to the addresses
> > * addrssize Size of the addrs buffer
> > * op Operation to perform (add or remove, see the flags of
> > * sctp_bindx)
> > *
> > * Returns 0 if ok, <0 errno code on error.
> > */
> > -static int sctp_setsockopt_bindx(struct sock *sk,
> > - struct sockaddr __user *addrs,
> > - int addrs_size, int op)
> > +static int sctp_setsockopt_bindx_kernel(struct sock *sk,
const
> > + struct sockaddr *addrs, int addrs_size,
> > + int op)

The list of addresses ought to be 'const'.

IIRC that requires the test for 'port == 0' be moved down a few layers.

David

-
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