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authorChristoph Hellwig <hch@lst.de>2020-07-19 09:22:19 +0200
committerDavid S. Miller <davem@davemloft.net>2020-07-20 03:26:43 +0200
commit4d2fba3a7e7bda272447bf77377bf330f8a83ec7 (patch)
tree420e57d13ea4b9d7af5e8369269c6a1d10400b82 /net/sctp
parentsctp: pass a kernel pointer to sctp_setsockopt_add_streams (diff)
downloadlinux-4d2fba3a7e7bda272447bf77377bf330f8a83ec7.tar.xz
linux-4d2fba3a7e7bda272447bf77377bf330f8a83ec7.zip
sctp: pass a kernel pointer to sctp_setsockopt_scheduler
Use the kernel pointer that sctp_setsockopt has available instead of directly handling the user pointer. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/socket.c33
1 files changed, 14 insertions, 19 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 4dedb94bca77..a7d6a66fbe21 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4115,44 +4115,39 @@ static int sctp_setsockopt_add_streams(struct sock *sk,
}
static int sctp_setsockopt_scheduler(struct sock *sk,
- char __user *optval,
+ struct sctp_assoc_value *params,
unsigned int optlen)
{
struct sctp_sock *sp = sctp_sk(sk);
struct sctp_association *asoc;
- struct sctp_assoc_value params;
int retval = 0;
- if (optlen < sizeof(params))
+ if (optlen < sizeof(*params))
return -EINVAL;
- optlen = sizeof(params);
- if (copy_from_user(&params, optval, optlen))
- return -EFAULT;
-
- if (params.assoc_value > SCTP_SS_MAX)
+ if (params->assoc_value > SCTP_SS_MAX)
return -EINVAL;
- asoc = sctp_id2assoc(sk, params.assoc_id);
- if (!asoc && params.assoc_id > SCTP_ALL_ASSOC &&
+ asoc = sctp_id2assoc(sk, params->assoc_id);
+ if (!asoc && params->assoc_id > SCTP_ALL_ASSOC &&
sctp_style(sk, UDP))
return -EINVAL;
if (asoc)
- return sctp_sched_set_sched(asoc, params.assoc_value);
+ return sctp_sched_set_sched(asoc, params->assoc_value);
if (sctp_style(sk, TCP))
- params.assoc_id = SCTP_FUTURE_ASSOC;
+ params->assoc_id = SCTP_FUTURE_ASSOC;
- if (params.assoc_id == SCTP_FUTURE_ASSOC ||
- params.assoc_id == SCTP_ALL_ASSOC)
- sp->default_ss = params.assoc_value;
+ if (params->assoc_id == SCTP_FUTURE_ASSOC ||
+ params->assoc_id == SCTP_ALL_ASSOC)
+ sp->default_ss = params->assoc_value;
- if (params.assoc_id == SCTP_CURRENT_ASSOC ||
- params.assoc_id == SCTP_ALL_ASSOC) {
+ if (params->assoc_id == SCTP_CURRENT_ASSOC ||
+ params->assoc_id == SCTP_ALL_ASSOC) {
list_for_each_entry(asoc, &sp->ep->asocs, asocs) {
int ret = sctp_sched_set_sched(asoc,
- params.assoc_value);
+ params->assoc_value);
if (ret && !retval)
retval = ret;
@@ -4660,7 +4655,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname,
retval = sctp_setsockopt_add_streams(sk, kopt, optlen);
break;
case SCTP_STREAM_SCHEDULER:
- retval = sctp_setsockopt_scheduler(sk, optval, optlen);
+ retval = sctp_setsockopt_scheduler(sk, kopt, optlen);
break;
case SCTP_STREAM_SCHEDULER_VALUE:
retval = sctp_setsockopt_scheduler_value(sk, optval, optlen);