GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-23 15:27:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Bluetooth: Verify dlci not in use before rfcomm_dev create

Browse source 
Only one session/channel combination may be in use at any one
time. However, the failure does not occur until the tty is
opened (in rfcomm_dlc_open()).

Because these settings are actually bound at rfcomm device
creation (via RFCOMMCREATEDEV ioctl), validate and fail before
creating the rfcomm tty device.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Tested-By: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Peter Hurley 2014-02-09 20:59:10 -05:00 • committed by Marcel Holtmann
parent c949c224cf
commit c10a848cea
3 changed files with 34 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

8
net/bluetooth/rfcomm/tty.c
View file

@ -385,6 +385,14 @@ static int rfcomm_create_dev(struct sock *sk, void __user *arg)
dlc = rfcomm_pi(sk)->dlc;
rfcomm_dlc_hold(dlc);
} else {
/* Validate the channel is unused */
dlc = rfcomm_dlc_exists(&req.src, &req.dst, req.channel);
if (IS_ERR(dlc))
return PTR_ERR(dlc);
else if (dlc) {
rfcomm_dlc_put(dlc);
return -EBUSY;
}
dlc = rfcomm_dlc_alloc(GFP_KERNEL);
if (!dlc)
return -ENOMEM;