diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 10:22:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-20 04:26:43 +0300 |
| commit | d492243435bdffec229b1a9d694e5864e802833a (patch) | |
| tree | f469b95b014110e8d55038907cd727edf72b2a20 /net | |
| parent | 356dc6f16a96615d89c8aab3ca18c5bc7c3d4baa (diff) | |
| download | linux-d492243435bdffec229b1a9d694e5864e802833a.tar.xz | |
sctp: pass a kernel pointer to sctp_setsockopt_reset_streams
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 | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 9899d208f40f..1365351fd2c8 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -4061,12 +4061,10 @@ out: } static int sctp_setsockopt_reset_streams(struct sock *sk, - char __user *optval, + struct sctp_reset_streams *params, unsigned int optlen) { - struct sctp_reset_streams *params; struct sctp_association *asoc; - int retval = -EINVAL; if (optlen < sizeof(*params)) return -EINVAL; @@ -4074,23 +4072,15 @@ static int sctp_setsockopt_reset_streams(struct sock *sk, optlen = min_t(unsigned int, optlen, USHRT_MAX + sizeof(__u16) * sizeof(*params)); - params = memdup_user(optval, optlen); - if (IS_ERR(params)) - return PTR_ERR(params); - if (params->srs_number_streams * sizeof(__u16) > optlen - sizeof(*params)) - goto out; + return -EINVAL; asoc = sctp_id2assoc(sk, params->srs_assoc_id); if (!asoc) - goto out; - - retval = sctp_send_reset_streams(asoc, params); + return -EINVAL; -out: - kfree(params); - return retval; + return sctp_send_reset_streams(asoc, params); } static int sctp_setsockopt_reset_assoc(struct sock *sk, @@ -4682,7 +4672,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_enable_strreset(sk, kopt, optlen); break; case SCTP_RESET_STREAMS: - retval = sctp_setsockopt_reset_streams(sk, optval, optlen); + retval = sctp_setsockopt_reset_streams(sk, kopt, optlen); break; case SCTP_RESET_ASSOC: retval = sctp_setsockopt_reset_assoc(sk, optval, optlen); |