On Thu, Jul 09, 2015 at 01:34:26PM -0400, kaike....@intel.com wrote:
> From: Kaike Wan <kaike....@intel.com>
>
> This patch adds a function to check if listeners for a netlink multicast
> group are present. It also adds a function to receive netlink response
> messages.
>
> Signed-off-by: Kaike Wan <kaike....@intel.com>
> Signed-off-by: John Fleck <john.fl...@intel.com>
> Signed-off-by: Ira Weiny <ira.we...@intel.com>
> drivers/infiniband/core/netlink.c | 55
> +++++++++++++++++++++++++++++++++++++
> include/rdma/rdma_netlink.h | 7 +++++
> 2 files changed, 62 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/infiniband/core/netlink.c
> b/drivers/infiniband/core/netlink.c
> index 23dd5a5..d47df93 100644
> +++ b/drivers/infiniband/core/netlink.c
> @@ -49,6 +49,14 @@ static DEFINE_MUTEX(ibnl_mutex);
> static struct sock *nls;
> static LIST_HEAD(client_list);
>
> +int ibnl_chk_listeners(unsigned int group)
> +{
> + if (netlink_has_listeners(nls, group) == 0)
> + return -1;
> + return 0;
> +}
> +EXPORT_SYMBOL(ibnl_chk_listeners);
I was thinking about this today, and, where is the security?
What prevents a non-root user from making the above true and/or worse?
Jason
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