Re: [patch] eicon: make buffer larger

Dan Carpenter
2010-10-06T07:47:32Z

On Wed, Oct 06, 2010 at 09:25:44AM +0200, Armin Schindler wrote:
> On Mon, 4 Oct 2010, Dan Carpenter wrote:
>> In diva_mnt_add_xdi_adapter() we do this:
>> strcpy (clients[id].drvName, tmp);
>> strcpy (clients[id].Dbg.drvName, tmp);
>>
>> The "clients[id].drvName" is a 128 character buffer and
>> "clients[id].Dbg.drvName" was originally a 16 character buffer but I've
>> changed it to 128 as well. We don't actually use 128 characters but we
>> do use more than 16.
>
> I don't see any reason for that change. The driver names here do not use
> more than 16 characters and when filled, the length is checked anyway.
> Please avoid changing the size of that structure.
>

drivers/isdn/hardware/eicon/debug.c diva_mnt_add_xdi_adapter()
874 sprintf (tmp, "ADAPTER:%d SN:%u-%d",
12345678 90123 45 67

That's a minimum 17 characters.

875 (int)logical,
876 serial & 0x00ffffff,
877 (byte)(((serial & 0xff000000) >> 24) + 1));
878 } else {
879 sprintf (tmp, "ADAPTER:%d SN:%u", (int)logical, serial);
880 }

regards,
dan carpenter

> Armin