diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 09:22:12 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:43 -0700 |
| commit | 4a97fa4f099b9ac82d0e0adbd2f63fccf3dd96fc (patch) | |
| tree | cc0ac119bc1f47fa7ab6b1dba66a3a65228ee9fb /net/sctp/socket.c | |
| parent | cfa6fde26642553fcb0cdbfefe80f075eb6173f2 (diff) | |
| download | linux-4a97fa4f099b9ac82d0e0adbd2f63fccf3dd96fc.tar.bz2 | |
sctp: pass a kernel pointer to sctp_setsockopt_pr_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 | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 7beb26e5749d..245186327896 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3925,24 +3925,20 @@ static int sctp_setsockopt_recvnxtinfo(struct sock *sk, int *val, } static int sctp_setsockopt_pr_supported(struct sock *sk, - char __user *optval, + struct sctp_assoc_value *params, unsigned int optlen) { - struct sctp_assoc_value params; struct sctp_association *asoc; - if (optlen != sizeof(params)) + if (optlen != sizeof(*params)) return -EINVAL; - if (copy_from_user(¶ms, optval, optlen)) - return -EFAULT; - - asoc = sctp_id2assoc(sk, params.assoc_id); - if (!asoc && params.assoc_id != SCTP_FUTURE_ASSOC && + asoc = sctp_id2assoc(sk, params->assoc_id); + if (!asoc && params->assoc_id != SCTP_FUTURE_ASSOC && sctp_style(sk, UDP)) return -EINVAL; - sctp_sk(sk)->ep->prsctp_enable = !!params.assoc_value; + sctp_sk(sk)->ep->prsctp_enable = !!params->assoc_value; return 0; } @@ -4691,7 +4687,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_recvnxtinfo(sk, kopt, optlen); break; case SCTP_PR_SUPPORTED: - retval = sctp_setsockopt_pr_supported(sk, optval, optlen); + retval = sctp_setsockopt_pr_supported(sk, kopt, optlen); break; case SCTP_DEFAULT_PRINFO: retval = sctp_setsockopt_default_prinfo(sk, optval, optlen); |