Commit 8a2409d3 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by David S. Miller
Browse files

sctp: pass a kernel pointer to sctp_setsockopt_default_sndinfo 



Use the kernel pointer that sctp_setsockopt has available instead of
directly handling the user pointer.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c23ad6d2

net/sctp/socket.c

+23 −26
Original line number Diff line number Diff line
@@ -2925,54 +2925,51 @@ static int sctp_setsockopt_default_send_param(struct sock *sk, 
 * (SCTP_DEFAULT_SNDINFO)

 */

static int sctp_setsockopt_default_sndinfo(struct sock *sk,

					   char __user *optval,

					   struct sctp_sndinfo *info,

					   unsigned int optlen)

{

	struct sctp_sock *sp = sctp_sk(sk);

	struct sctp_association *asoc;

	struct sctp_sndinfo info;



	if (optlen != sizeof(info))

	if (optlen != sizeof(*info))

		return -EINVAL;

	if (copy_from_user(&info, optval, optlen))

		return -EFAULT;

	if (info.snd_flags &

	if (info->snd_flags &

	    ~(SCTP_UNORDERED | SCTP_ADDR_OVER |

	      SCTP_ABORT | SCTP_EOF))

		return -EINVAL;



	asoc = sctp_id2assoc(sk, info.snd_assoc_id);

	if (!asoc && info.snd_assoc_id > SCTP_ALL_ASSOC &&

	asoc = sctp_id2assoc(sk, info->snd_assoc_id);

	if (!asoc && info->snd_assoc_id > SCTP_ALL_ASSOC &&

	    sctp_style(sk, UDP))

		return -EINVAL;



	if (asoc) {

		asoc->default_stream = info.snd_sid;

		asoc->default_flags = info.snd_flags;

		asoc->default_ppid = info.snd_ppid;

		asoc->default_context = info.snd_context;

		asoc->default_stream = info->snd_sid;

		asoc->default_flags = info->snd_flags;

		asoc->default_ppid = info->snd_ppid;

		asoc->default_context = info->snd_context;



		return 0;

	}



	if (sctp_style(sk, TCP))

		info.snd_assoc_id = SCTP_FUTURE_ASSOC;

		info->snd_assoc_id = SCTP_FUTURE_ASSOC;



	if (info.snd_assoc_id == SCTP_FUTURE_ASSOC ||

	    info.snd_assoc_id == SCTP_ALL_ASSOC) {

		sp->default_stream = info.snd_sid;

		sp->default_flags = info.snd_flags;

		sp->default_ppid = info.snd_ppid;

		sp->default_context = info.snd_context;

	if (info->snd_assoc_id == SCTP_FUTURE_ASSOC ||

	    info->snd_assoc_id == SCTP_ALL_ASSOC) {

		sp->default_stream = info->snd_sid;

		sp->default_flags = info->snd_flags;

		sp->default_ppid = info->snd_ppid;

		sp->default_context = info->snd_context;

	}



	if (info.snd_assoc_id == SCTP_CURRENT_ASSOC ||

	    info.snd_assoc_id == SCTP_ALL_ASSOC) {

	if (info->snd_assoc_id == SCTP_CURRENT_ASSOC ||

	    info->snd_assoc_id == SCTP_ALL_ASSOC) {

		list_for_each_entry(asoc, &sp->ep->asocs, asocs) {

			asoc->default_stream = info.snd_sid;

			asoc->default_flags = info.snd_flags;

			asoc->default_ppid = info.snd_ppid;

			asoc->default_context = info.snd_context;

			asoc->default_stream = info->snd_sid;

			asoc->default_flags = info->snd_flags;

			asoc->default_ppid = info->snd_ppid;

			asoc->default_context = info->snd_context;

		}

	}
@@ -4695,7 +4692,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, 
		retval = sctp_setsockopt_default_send_param(sk, kopt, optlen);

		break;

	case SCTP_DEFAULT_SNDINFO:

		retval = sctp_setsockopt_default_sndinfo(sk, optval, optlen);

		retval = sctp_setsockopt_default_sndinfo(sk, kopt, optlen);

		break;

	case SCTP_PRIMARY_ADDR:

		retval = sctp_setsockopt_primary_addr(sk, optval, optlen);

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