linux-kernel - [PATCH 6/8] dst/connector: Disallow unpliviged users to configure dst

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Message-Id: <1254487211-11810-7-git-send-email-philipp.reisner@linbit.com>
Date:	Fri,  2 Oct 2009 14:40:09 +0200
From:	Philipp Reisner <philipp.reisner@...bit.com>
To:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>, Greg KH <greg@...ah.com>
Cc:	dm-devel@...hat.com, Evgeniy Polyakov <zbr@...emap.net>,
	linux-fbdev-devel@...ts.sourceforge.net,
	Philipp Reisner <philipp.reisner@...bit.com>
Subject: [PATCH 6/8] dst/connector: Disallow unpliviged users to configure dst

Signed-off-by: Philipp Reisner <philipp.reisner@...bit.com>
---
 drivers/staging/dst/dcore.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

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 @@ 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;
-- 
1.6.0.4

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