[systemd-devel] systemd-activation: it's a mess for beginners

[Daniele Nicolodi]

On 20-03-2019 14:01, Reindl Harald wrote:
> Am 20.03.19 um 20:53 schrieb Daniele Nicolodi:
>> I am not sure what you are trying to say, but the first source code
>> snippet in your email in not valid C code.  I don't know what you mean
>> by "beginners" in the subject of your email, but I think that the
>> documentation assumes basic knowledge of the C programming language.
> 
> tell that http://0pointer.de/blog/projects/socket-activation.html

Communication would be more effective if you would write complete
sentences instead than having us guess what you are trying to say.

> /* Source Code Example #2: UPDATED, SOCKET-ACTIVATABLE SERVICE */
> ...
> #include "sd-daemon.h"
> ...
> int fd;
> 
> if (sd_listen_fds(0) != 1) {
>         fprintf(stderr, "No or too many file descriptors received.\n");
>         exit(1);
> }
> 
> fd = SD_LISTEN_FDS_START + 0;

This code snipped clearly has "..." as placeholders for code parts that
were not included in the documentation snippets. Your test program did
not include the "..." markers, thus I believe that you understood that
much. For how to replace the placeholders with working C code you need
to consult your favorite C programming manual. I don't think Lennart
blog post was meant to be a C programming tutorial as well as an
introduction to systemd socket activation.

Cheers,
Dan