diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 10:22:27 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-20 04:26:44 +0300 |
| commit | 26feba8090773550f255aed911d8f824ca42b7eb (patch) | |
| tree | 132eb688d680aecef7aea2b0719ab8329029c547 /net | |
| parent | 92c4f172552a37f1dbc385615b4497bd15df1d8f (diff) | |
| download | linux-26feba8090773550f255aed911d8f824ca42b7eb.tar.xz | |
sctp: pass a kernel pointer to sctp_setsockopt_pf_expose
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')
| -rw-r--r-- | net/sctp/socket.c | 22 |
1 files changed, 8 insertions, 14 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 9f7f9aa50d4b..f2d4f8a0c426 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -4382,33 +4382,27 @@ out: } static int sctp_setsockopt_pf_expose(struct sock *sk, - char __user *optval, + struct sctp_assoc_value *params, unsigned int optlen) { - struct sctp_assoc_value params; struct sctp_association *asoc; int retval = -EINVAL; - if (optlen != sizeof(params)) - goto out; - - if (copy_from_user(¶ms, optval, optlen)) { - retval = -EFAULT; + if (optlen != sizeof(*params)) goto out; - } - if (params.assoc_value > SCTP_PF_EXPOSE_MAX) + if (params->assoc_value > SCTP_PF_EXPOSE_MAX) goto out; - 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)) goto out; if (asoc) - asoc->pf_expose = params.assoc_value; + asoc->pf_expose = params->assoc_value; else - sctp_sk(sk)->pf_expose = params.assoc_value; + sctp_sk(sk)->pf_expose = params->assoc_value; retval = 0; out: @@ -4632,7 +4626,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_ecn_supported(sk, kopt, optlen); break; case SCTP_EXPOSE_POTENTIALLY_FAILED_STATE: - retval = sctp_setsockopt_pf_expose(sk, optval, optlen); + retval = sctp_setsockopt_pf_expose(sk, kopt, optlen); break; default: retval = -ENOPROTOOPT; |