linux-kernel - [char-misc-next 13/15] mei: bus: blacklist clients by number of connections

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1434394615-3754-14-git-send-email-tomas.winkler@intel.com>
Date:	Mon, 15 Jun 2015 21:56:53 +0300
From:	Tomas Winkler <tomas.winkler@...el.com>
To:	gregkh@...uxfoundation.org
Cc:	arnd@...db.de, linux-kernel@...r.kernel.org,
	Tomas Winkler <tomas.winkler@...el.com>
Subject: [char-misc-next 13/15] mei: bus: blacklist clients by number of connections

Currently we support only clients with single connection
and fixed address clients so all other clients are blacklisted

Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
---
 drivers/misc/mei/bus-fixup.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c
index 9a1a0d635bd3..46d27d92db3f 100644
--- a/drivers/misc/mei/bus-fixup.c
+++ b/drivers/misc/mei/bus-fixup.c
@@ -33,6 +33,24 @@
 #define MEI_UUID_ANY NULL_UUID_LE
 
 /**
+ * number_of_connections - determine whether an client be on the bus
+ *    according number of connections
+ *    We support only clients:
+ *       1. with single connection
+ *       2. and fixed clients (max_number_of_connections == 0)
+ *
+ * @cldev: me clients device
+ */
+static void number_of_connections(struct mei_cl_device *cldev)
+{
+	dev_dbg(&cldev->dev, "running hook %s on %pUl\n",
+			__func__, mei_me_cl_uuid(cldev->me_cl));
+
+	if (cldev->me_cl->props.max_number_of_connections > 1)
+		cldev->do_match = 0;
+}
+
+/**
  * blacklist - blacklist a client from the bus
  *
  * @cldev: me clients device
@@ -434,6 +452,7 @@ static struct mei_fixup {
 	const uuid_le uuid;
 	void (*hook)(struct mei_cl_device *cldev);
 } mei_fixups[] = {
+	MEI_FIXUP(MEI_UUID_ANY, number_of_connections),
 	MEI_FIXUP(MEI_UUID_NFC_INFO, blacklist),
 };
 
-- 
2.4.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/