Linux bluetooth development
 help / color / mirror / Atom feed
From: Marcel Holtmann <marcel@holtmann.org>
To: linux-bluetooth@vger.kernel.org
Subject: [PATCH 1/2] Bluetooth: Restrict loading of link keys to BR/EDR capable controllers
Date: Wed,  2 Oct 2013 21:16:07 -0700	[thread overview]
Message-ID: <1380773768-12958-1-git-send-email-marcel@holtmann.org> (raw)

Loading link keys into a LE only controller make no sense. The kernel
would never use any of these keys. So instead of allowing userspace
to waste memory, reject such operation with a not supported error
message.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
---
 net/bluetooth/mgmt.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 3b3ed05..273ea8f 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1821,6 +1821,12 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data,
 	u16 key_count, expected_len;
 	int i;
 
+	BT_DBG("request for %s", hdev->name);
+
+	if (!lmp_bredr_capable(hdev))
+		return cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS,
+				  MGMT_STATUS_NOT_SUPPORTED);
+
 	key_count = __le16_to_cpu(cp->key_count);
 
 	expected_len = sizeof(*cp) + key_count *
-- 
1.8.3.1


             reply	other threads:[~2013-10-03  4:16 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-03  4:16 Marcel Holtmann [this message]
2013-10-03  6:34 ` [PATCH 1/2] Bluetooth: Restrict loading of link keys to BR/EDR capable controllers Johan Hedberg

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1380773768-12958-1-git-send-email-marcel@holtmann.org \
    --to=marcel@holtmann.org \
    --cc=linux-bluetooth@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox