diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 09:22:25 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:44 -0700 |
| commit | 963855a938cad73b950fb42fa5376e8ab3fd1475 (patch) | |
| tree | c1303055e6a2e6bbbe892a75d92db80a8acddf97 /net/sctp | |
| parent | 9263ac97af46e0f31ba38d730e45c64dc701954e (diff) | |
| download | lwn-963855a938cad73b950fb42fa5376e8ab3fd1475.tar.gz lwn-963855a938cad73b950fb42fa5376e8ab3fd1475.zip | |
sctp: pass a kernel pointer to sctp_setsockopt_auth_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')
| -rw-r--r-- | net/sctp/socket.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index b52acbf231ab..ca369447237a 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -4326,29 +4326,23 @@ out: } static int sctp_setsockopt_auth_supported(struct sock *sk, - char __user *optval, + struct sctp_assoc_value *params, unsigned int optlen) { - struct sctp_assoc_value params; struct sctp_association *asoc; struct sctp_endpoint *ep; int retval = -EINVAL; - if (optlen != sizeof(params)) - goto out; - - if (copy_from_user(¶ms, optval, optlen)) { - retval = -EFAULT; + if (optlen != sizeof(*params)) 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; ep = sctp_sk(sk)->ep; - if (params.assoc_value) { + if (params->assoc_value) { retval = sctp_auth_init(ep, GFP_KERNEL); if (retval) goto out; @@ -4358,7 +4352,7 @@ static int sctp_setsockopt_auth_supported(struct sock *sk, } } - ep->auth_enable = !!params.assoc_value; + ep->auth_enable = !!params->assoc_value; retval = 0; out: @@ -4638,7 +4632,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_asconf_supported(sk, kopt, optlen); break; case SCTP_AUTH_SUPPORTED: - retval = sctp_setsockopt_auth_supported(sk, optval, optlen); + retval = sctp_setsockopt_auth_supported(sk, kopt, optlen); break; case SCTP_ECN_SUPPORTED: retval = sctp_setsockopt_ecn_supported(sk, optval, optlen); |