dst/connector: Disallow unpliviged users to configure dst
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/staging/dst/dcore.c b/drivers/staging/dst/dcore.c
index 3943c91..ee16010 100644
--- a/drivers/staging/dst/dcore.c
+++ b/drivers/staging/dst/dcore.c
@@ -855,6 +855,11 @@
struct dst_node *n = NULL, *tmp;
unsigned int hash;
+ if (!cap_raised(nsp->eff_cap, CAP_SYS_ADMIN)) {
+ err = -EPERM;
+ goto out;
+ }
+
if (msg->len < sizeof(struct dst_ctl)) {
err = -EBADMSG;
goto out;