From: Philipp Reisner <philipp.reisner@linbit.com>
Date: Tue, 13 Oct 2009 09:28:16 +0000 (+0200)
Subject: dst/connector: Disallow unpliviged users to configure dst
X-Git-Tag: v2.6.31.5~15
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=060425ef1d42f59b9b3faed31406e9e59c7464a0;p=karo-tx-linux.git

dst/connector: Disallow unpliviged users to configure dst

(cherry picked from commit dbbb3431228784612848a1ec6061c78b4b708b5c)

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/dst/dcore.c b/drivers/staging/dst/dcore.c
index 32f102d5c21b..5546898dbdb4 100644
--- a/drivers/staging/dst/dcore.c
+++ b/drivers/staging/dst/dcore.c
@@ -854,6 +854,11 @@ static void cn_dst_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp)
 	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;