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    Subject[PATCH 4/7] dm/connector: Only process connector packages from privileged processes
    Date
    Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
    (cherry picked from commit 93136335f9ad7a98b92eacda1b43dccbf063cd07)
    ---
    drivers/md/dm-log-userspace-transfer.c | 3 +++
    1 files changed, 3 insertions(+), 0 deletions(-)

    diff --git a/drivers/md/dm-log-userspace-transfer.c b/drivers/md/dm-log-userspace-transfer.c
    index 1327e1a..54abf9e 100644
    --- a/drivers/md/dm-log-userspace-transfer.c
    +++ b/drivers/md/dm-log-userspace-transfer.c
    @@ -133,6 +133,9 @@ static void cn_ulog_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
    {
    struct dm_ulog_request *tfr = (struct dm_ulog_request *)(msg + 1);

    + if (!cap_raised(nsp->eff_cap, CAP_SYS_ADMIN))
    + return;
    +
    spin_lock(&receiving_list_lock);
    if (msg->len == 0)
    fill_pkg(msg, NULL);
    --
    1.6.0.4


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