I am trying to write a C function to start the wired network
interfaces eth0, eth1 up to eth2. This is how I wrote it, but I would
like your opinion about it especially where I should declare err.

The attachment is best viewed with medit with a tab space of 2.


On 27/08/2015, Edward Bartolo <edbarx@???> wrote:
> I don't think it is necessary to daemonise the backend as connection
> to and disconnecting from a network is not something that is done
> continuously. Therefore, in my humble opinion, running the backend on
> request seems to be the best approach. This also avoids additional
> complexity of requiring a dedicated init script. An SUID belonging to
> root is enough for the backend to be allowed privileges automatically
> whenever it is invoked. This means, the post installation script will
> only need to "chmod u+s backend" and create a launcher on user
> request.
>
> I will now test an installation to /usr/bin of both backend and
> frontend using an SUID for the backend. If everthing goes well, it
> would mean, the time for an ALPHA release of a .deb package for
> netman, is possible now.
>
> I included more functionality in the frontend to recognise the
> existence of an /etc/network/interfaces displaying and option to
> connect to eth0 if that is found. I also included a compiler
> conditional directive to compile the frontend so as to bypass the
> requirement of sudo.
>
> When I am ready, and I think the project can be package, I will upload
> to git.devuan.org
>
>
> Edward
>
> On 26/08/2015, Isaac Dunham <ibid.ag@???> wrote:
>> On Wed, Aug 26, 2015 at 02:27:57PM +0200, tilt! wrote:
>>> On 08/26/2015 01:36 PM, Irrwahn wrote:
>>> >[...]
>>> >Or, even better, you could easily pass the IF name as an additional
>>> >parameter to the backend (and possily even use it as additional
>>> > component
>>> >to construct the interface file names).
>>>
>>> An easy way to obtain a list of interface names on Linux is:
>>>
>>> awk 'NR>2{gsub(/:/,"");print $1}' /proc/net/dev
>>
>> Or "ls /sys/class/net".
>> For listing non-loopback devices only, use
>> ls -d /sys/class/net/*/device | cut -d/ -f5
>>
>> For wireless, check for the files "phy80211" or "wireless".
>>
>> The equivalent can be done trivially in C with readdir(); ask if you'd
>> like
>> an example.
>>
>> HTH,
>> Isaac Dunham
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>