diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 09:22:21 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:44 -0700 |
| commit | 5b8d3b24467a41388097411ac0b2fc1f4b10bbf5 (patch) | |
| tree | eb946925c55d26badd73e908553a5f974d7deebd /net/sctp/socket.c | |
| parent | d636e7f31fcc986525cb853f0fabccc2408f0840 (diff) | |
sctp: pass a kernel pointer to sctp_setsockopt_interleaving_supported
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/socket.c')
| -rw-r--r-- | net/sctp/socket.c | 34 |
1 files changed, 10 insertions, 24 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 4b660e6bf3bb..6232e46c4cde 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -4193,39 +4193,25 @@ out: } static int sctp_setsockopt_interleaving_supported(struct sock *sk, - char __user *optval, + struct sctp_assoc_value *p, unsigned int optlen) { struct sctp_sock *sp = sctp_sk(sk); - struct sctp_assoc_value params; struct sctp_association *asoc; - int retval = -EINVAL; - if (optlen < sizeof(params)) - goto out; - - optlen = sizeof(params); - if (copy_from_user(¶ms, optval, optlen)) { - retval = -EFAULT; - goto out; - } + if (optlen < sizeof(*p)) + return -EINVAL; - asoc = sctp_id2assoc(sk, params.assoc_id); - if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC && - sctp_style(sk, UDP)) - goto out; + asoc = sctp_id2assoc(sk, p->assoc_id); + if (!asoc && p->assoc_id != SCTP_FUTURE_ASSOC && sctp_style(sk, UDP)) + return -EINVAL; if (!sock_net(sk)->sctp.intl_enable || !sp->frag_interleave) { - retval = -EPERM; - goto out; + return -EPERM; } - sp->ep->intl_enable = !!params.assoc_value; - - retval = 0; - -out: - return retval; + sp->ep->intl_enable = !!p->assoc_value; + return 0; } static int sctp_setsockopt_reuse_port(struct sock *sk, char __user *optval, @@ -4655,7 +4641,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_scheduler_value(sk, kopt, optlen); break; case SCTP_INTERLEAVING_SUPPORTED: - retval = sctp_setsockopt_interleaving_supported(sk, optval, + retval = sctp_setsockopt_interleaving_supported(sk, kopt, optlen); break; case SCTP_REUSE_PORT: |