Dimitri John Ledkov xnox at
Sat May 17 12:11:25 UTC 2014

On 17 May 2014 06:53, Charl Wentzel <charl.wentzel at> wrote:
> On 17/05/2014 01:35, Dimitri John Ledkov wrote:
>> On 16 May 2014 07:26, Charl Wentzel <charl.wentzel at> wrote:
>>> I wanted do to debugging in Eclipse which required me to let Eclipse run
>>> gdb with sudo.  However, for this to work, sudo must not ask for a
>>> password.  So I've added the following entry in /etc/sudoers under the
>>> appropriate comment:
>> If you simply want to grant unrestricted permissions for gdb to attach
>> to any process, you don't need to grant full sudo to it.
> Thanks, I'll have a look into it.
>> Are there any other reasons why you want to run gdb as root from eclipse?
> Yes, I'm writing an application that works with /dev/port for setting IO
> states.  I've looked into a few options, but none of the quite suited me:

Whilst coding you may want to open up /dev/port, e.g.
$ sudo chmod g+w /dev/port # if you need r/w access
$ sudo adduser `id -un` kmem

This will open up /dev/port for r+w to yourself (well anyone in kmem
group). This is slightly better than running things as root.

However, you'll need a solution to do something sensible in the
finally shipped application. E.g. do start your application as root
(or use setuid on the binary), execute ioperm()/iopl() to grant access
to I/O ports you need, and after that drop privileges. For more info

This discussion is already out of scope for this mailing list however
=) as we are getting in the realm of just generic linux/unix
programming, more suited for something like stackoverflow / linux-unix
stackexchange and the like.



More information about the Ubuntu-devel-discuss mailing list