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| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 09:22:15 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:43 -0700 |
| commit | 356dc6f16a96615d89c8aab3ca18c5bc7c3d4baa (patch) | |
| tree | 51882ee3eb53f4d52c67e3377d96e0130ee73a8e /net/sctp | |
| parent | 3f49f72035d5625c06a23d72c22feee7f0d2b068 (diff) | |
| download | linux-356dc6f16a96615d89c8aab3ca18c5bc7c3d4baa.tar.gz linux-356dc6f16a96615d89c8aab3ca18c5bc7c3d4baa.tar.bz2 linux-356dc6f16a96615d89c8aab3ca18c5bc7c3d4baa.zip | |
sctp: pass a kernel pointer to sctp_setsockopt_enable_strreset
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 | 34 |
1 files changed, 14 insertions, 20 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 270c5d53fbf7..9899d208f40f 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -4019,48 +4019,42 @@ out: } static int sctp_setsockopt_enable_strreset(struct sock *sk, - char __user *optval, + struct sctp_assoc_value *params, unsigned int optlen) { struct sctp_endpoint *ep = sctp_sk(sk)->ep; - 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_ENABLE_STRRESET_MASK)) + if (params->assoc_value & (~SCTP_ENABLE_STRRESET_MASK)) goto out; - 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)) goto out; retval = 0; if (asoc) { - asoc->strreset_enable = params.assoc_value; + asoc->strreset_enable = params->assoc_value; goto out; } 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) - ep->strreset_enable = params.assoc_value; + if (params->assoc_id == SCTP_FUTURE_ASSOC || + params->assoc_id == SCTP_ALL_ASSOC) + ep->strreset_enable = 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, &ep->asocs, asocs) - asoc->strreset_enable = params.assoc_value; + asoc->strreset_enable = params->assoc_value; out: return retval; @@ -4685,7 +4679,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_reconfig_supported(sk, kopt, optlen); break; case SCTP_ENABLE_STREAM_RESET: - retval = sctp_setsockopt_enable_strreset(sk, optval, optlen); + retval = sctp_setsockopt_enable_strreset(sk, kopt, optlen); break; case SCTP_RESET_STREAMS: retval = sctp_setsockopt_reset_streams(sk, optval, optlen); |