diff options
| author |   Christoph Hellwig <hch@lst.de> | 2020-07-19 09:21:55 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:42 -0700 |
| commit | ffc08f086a563cdd18f43edf574724f65e4bf5e3 (patch) | |
| tree | 15ff8fd2e5bd69a147e0f71dfc3a7fa275e180eb /net/sctp | |
| parent | sctp: pass a kernel pointer to sctp_setsockopt_associnfo (diff) | |
| download | wireguard-linux-ffc08f086a563cdd18f43edf574724f65e4bf5e3.tar.xz wireguard-linux-ffc08f086a563cdd18f43edf574724f65e4bf5e3.zip | |
sctp: pass a kernel pointer to sctp_setsockopt_mappedv4
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 | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 2a655c65e294..5007af318e13 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3173,16 +3173,14 @@ static int sctp_setsockopt_associnfo(struct sock *sk, * addresses and a user will receive both PF_INET6 and PF_INET type * addresses on the socket. */ -static int sctp_setsockopt_mappedv4(struct sock *sk, char __user *optval, unsigned int optlen) +static int sctp_setsockopt_mappedv4(struct sock *sk, int *val, + unsigned int optlen) { - int val; struct sctp_sock *sp = sctp_sk(sk); if (optlen < sizeof(int)) return -EINVAL; - if (get_user(val, (int __user *)optval)) - return -EFAULT; - if (val) + if (*val) sp->v4mapped = 1; else sp->v4mapped = 0; @@ -4696,7 +4694,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_associnfo(sk, kopt, optlen); break; case SCTP_I_WANT_MAPPED_V4_ADDR: - retval = sctp_setsockopt_mappedv4(sk, optval, optlen); + retval = sctp_setsockopt_mappedv4(sk, kopt, optlen); break; case SCTP_MAXSEG: retval = sctp_setsockopt_maxseg(sk, optval, optlen); |