diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 10:21:46 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-20 04:26:41 +0300 |
| commit | bb13d647d95bd0fdbc4882c27ea818b4c879263f (patch) | |
| tree | bf11192554c3bb15d25c820f8134d493b5bbd0ec /net/sctp | |
| parent | ebb25defdc17b594715418f1aa99eeb9a217cf1f (diff) | |
| download | linux-bb13d647d95bd0fdbc4882c27ea818b4c879263f.tar.xz | |
sctp: pass a kernel pointer to sctp_setsockopt_partial_delivery_point
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 | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 2dfbd7f87991..deccfe54d2fc 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3487,24 +3487,19 @@ static int sctp_setsockopt_fragment_interleave(struct sock *sk, * call as long as the user provided buffer is large enough to hold the * message. */ -static int sctp_setsockopt_partial_delivery_point(struct sock *sk, - char __user *optval, +static int sctp_setsockopt_partial_delivery_point(struct sock *sk, u32 *val, unsigned int optlen) { - u32 val; - if (optlen != sizeof(u32)) return -EINVAL; - if (get_user(val, (int __user *)optval)) - return -EFAULT; /* Note: We double the receive buffer from what the user sets * it to be, also initial rwnd is based on rcvbuf/2. */ - if (val > (sk->sk_rcvbuf >> 1)) + if (*val > (sk->sk_rcvbuf >> 1)) return -EINVAL; - sctp_sk(sk)->pd_point = val; + sctp_sk(sk)->pd_point = *val; return 0; /* is this the right error code? */ } @@ -4695,7 +4690,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_delayed_ack(sk, kopt, optlen); break; case SCTP_PARTIAL_DELIVERY_POINT: - retval = sctp_setsockopt_partial_delivery_point(sk, optval, optlen); + retval = sctp_setsockopt_partial_delivery_point(sk, kopt, optlen); break; case SCTP_INITMSG: |