diff options
| author |   Christoph Hellwig <hch@lst.de> | 2020-07-19 09:22:08 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:43 -0700 |
| commit | c9abc2c1c2973a30750fa00bfc912b683d88d1bc (patch) | |
| tree | aefb7af8f193f8527dc977af87e1173b0b9933f0 /net/sctp | |
| parent | sctp: pass a kernel pointer to sctp_setsockopt_deactivate_key (diff) | |
| download | linux-dev-c9abc2c1c2973a30750fa00bfc912b683d88d1bc.tar.xz linux-dev-c9abc2c1c2973a30750fa00bfc912b683d88d1bc.zip | |
sctp: pass a kernel pointer to sctp_setsockopt_auto_asconf
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 | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index ab155c15939e..64f2a967ddf5 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3807,26 +3807,23 @@ static int sctp_setsockopt_deactivate_key(struct sock *sk, * Note. In this implementation, socket operation overrides default parameter * being set by sysctl as well as FreeBSD implementation */ -static int sctp_setsockopt_auto_asconf(struct sock *sk, char __user *optval, +static int sctp_setsockopt_auto_asconf(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 (!sctp_is_ep_boundall(sk) && val) + if (!sctp_is_ep_boundall(sk) && *val) return -EINVAL; - if ((val && sp->do_auto_asconf) || (!val && !sp->do_auto_asconf)) + if ((*val && sp->do_auto_asconf) || (!*val && !sp->do_auto_asconf)) return 0; spin_lock_bh(&sock_net(sk)->sctp.addr_wq_lock); - if (val == 0 && sp->do_auto_asconf) { + if (*val == 0 && sp->do_auto_asconf) { list_del(&sp->auto_asconf_list); sp->do_auto_asconf = 0; - } else if (val && !sp->do_auto_asconf) { + } else if (*val && !sp->do_auto_asconf) { list_add_tail(&sp->auto_asconf_list, &sock_net(sk)->sctp.auto_asconf_splist); sp->do_auto_asconf = 1; @@ -4690,7 +4687,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_deactivate_key(sk, kopt, optlen); break; case SCTP_AUTO_ASCONF: - retval = sctp_setsockopt_auto_asconf(sk, optval, optlen); + retval = sctp_setsockopt_auto_asconf(sk, kopt, optlen); break; case SCTP_PEER_ADDR_THLDS: retval = sctp_setsockopt_paddr_thresholds(sk, optval, optlen, |