Commit d636e7f3 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by David S. Miller
Browse files

sctp: pass a kernel pointer to sctp_setsockopt_scheduler_value 



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 4d2fba3a

net/sctp/socket.c

+10 −16
Original line number Diff line number Diff line
@@ -4158,38 +4158,32 @@ static int sctp_setsockopt_scheduler(struct sock *sk, 
}



static int sctp_setsockopt_scheduler_value(struct sock *sk,

					   char __user *optval,

					   struct sctp_stream_value *params,

					   unsigned int optlen)

{

	struct sctp_stream_value params;

	struct sctp_association *asoc;

	int retval = -EINVAL;



	if (optlen < sizeof(params))

		goto out;



	optlen = sizeof(params);

	if (copy_from_user(&params, optval, optlen)) {

		retval = -EFAULT;

	if (optlen < sizeof(*params))

		goto out;

	}



	asoc = sctp_id2assoc(sk, params.assoc_id);

	if (!asoc && params.assoc_id != SCTP_CURRENT_ASSOC &&

	asoc = sctp_id2assoc(sk, params->assoc_id);

	if (!asoc && params->assoc_id != SCTP_CURRENT_ASSOC &&

	    sctp_style(sk, UDP))

		goto out;



	if (asoc) {

		retval = sctp_sched_set_value(asoc, params.stream_id,

					      params.stream_value, GFP_KERNEL);

		retval = sctp_sched_set_value(asoc, params->stream_id,

					      params->stream_value, GFP_KERNEL);

		goto out;

	}



	retval = 0;



	list_for_each_entry(asoc, &sctp_sk(sk)->ep->asocs, asocs) {

		int ret = sctp_sched_set_value(asoc, params.stream_id,

					       params.stream_value, GFP_KERNEL);

		int ret = sctp_sched_set_value(asoc, params->stream_id,

					       params->stream_value,

					       GFP_KERNEL);

		if (ret && !retval) /* try to return the 1st error. */

			retval = ret;

	}
@@ -4658,7 +4652,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, 
		retval = sctp_setsockopt_scheduler(sk, kopt, optlen);

		break;

	case SCTP_STREAM_SCHEDULER_VALUE:

		retval = sctp_setsockopt_scheduler_value(sk, optval, optlen);

		retval = sctp_setsockopt_scheduler_value(sk, kopt, optlen);

		break;

	case SCTP_INTERLEAVING_SUPPORTED:

		retval = sctp_setsockopt_interleaving_supported(sk, optval,

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