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| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 09:22:19 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:43 -0700 |
| commit | 4d2fba3a7e7bda272447bf77377bf330f8a83ec7 (patch) | |
| tree | 420e57d13ea4b9d7af5e8369269c6a1d10400b82 /net/sctp | |
| parent | 4d6fb2606252a4a001388f52808edbf3c624d033 (diff) | |
| download | linux-4d2fba3a7e7bda272447bf77377bf330f8a83ec7.tar.gz linux-4d2fba3a7e7bda272447bf77377bf330f8a83ec7.tar.bz2 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.c | 33 |
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(¶ms, 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); |