On 17 May 2014 06:53, Charl Wentzel <charl.went...@vodamail.co.za> wrote: > On 17/05/2014 01:35, Dimitri John Ledkov wrote: > >> On 16 May 2014 07:26, Charl Wentzel <charl.went...@vodamail.co.za> 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 (re-login) 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 see http://www.tldp.org/HOWTO/IO-Port-Programming-2.html 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. -- Regards, Dimitri. -- Ubuntu-devel-discuss mailing list Ubuntu-devel-discuss@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
