:: Re: [DNG] Our friendly community
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Auteur: John Hughes
Datum:  
Aan: Rainer Weikusat
CC: dng
Onderwerp: Re: [DNG] Our friendly community
On 18/12/15 17:27, Rainer Weikusat wrote:
> John Hughes <john@???> writes:
>
>>
>> Can't find the string "ESYADMINDEPRECATED" in the source for
>> libsystemd0.
> That's not really surprising as there is no source for
> 'libsystemd0'. It's a part of systemd,
>
> https://packages.debian.org/sid/libsystemd0
>
> and the source of that doesn't contain 'if (init_is_systemd)' either.


You were implicitly claiming that libsystemd would produce errors if
systemd was installed. I was, perhaps flippantly, noting that it doesn't.

You are right, libsystemd0 is made from the same source package as
systemd, but so what? The source is available, look in the
src/libsystemd directory.

public_ int sd_listen_fds(int unset_environment) {
         const char *e;
         unsigned n;
         int r, fd;
         pid_t pid;


         e = getenv("LISTEN_PID");
         if (!e) {
                 r = 0;
                 goto finish;
         }


If "LISTEN_PID" is not set then we're not started by inetd, not systemd,
so the first and only input device is stdin, just like always. (By the
way, I think the interface for this function is pretty shitty, it could
simplify the caller if in the inetd case it dup'ed stdin to
SD_LISTEN_FDS_START and then everyone could pretend they were being
started by systemd, but I expect that would have caused bigger howls of
outrage).