diff options
Diffstat (limited to 'net/ipv4/ip_sockglue.c')
| -rw-r--r-- | net/ipv4/ip_sockglue.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c index 7f065a68664e..a2469bc57cfe 100644 --- a/net/ipv4/ip_sockglue.c +++ b/net/ipv4/ip_sockglue.c @@ -1322,8 +1322,27 @@ int compat_ip_setsockopt(struct sock *sk, int level, int optname, case MCAST_LEAVE_SOURCE_GROUP: case MCAST_BLOCK_SOURCE: case MCAST_UNBLOCK_SOURCE: - return compat_mc_setsockopt(sk, level, optname, optval, optlen, - ip_setsockopt); + { + struct compat_group_source_req __user *gsr32 = (void __user *)optval; + struct group_source_req greqs; + + if (optlen != sizeof(struct compat_group_source_req)) + return -EINVAL; + + if (get_user(greqs.gsr_interface, &gsr32->gsr_interface) || + copy_from_user(&greqs.gsr_group, &gsr32->gsr_group, + sizeof(greqs.gsr_group)) || + copy_from_user(&greqs.gsr_source, &gsr32->gsr_source, + sizeof(greqs.gsr_source))) + return -EFAULT; + + rtnl_lock(); + lock_sock(sk); + err = do_mcast_group_source(sk, optname, &greqs); + release_sock(sk); + rtnl_unlock(); + return err; + } case MCAST_MSFILTER: { const int size0 = offsetof(struct compat_group_filter, gf_slist); |