[systemd-devel] [PATCH] timedated: add --timezone option to set the default timezone

[juho son]

On 03/25/2014 04:47 AM, Lennart Poettering wrote:
> On Tue, 18.03.14 02:34, Juho Son (juho80.son at samsung.com) wrote:
>
>> This option could changes the default system's time zone.
>> The default time zone is /etc/localtime. If we want to use
>> the specific path, we could use this option.
> I agree with the others on this thread, this really looks like nothing
> we should support upstream. /etc is the place for configuration. If you
> decide to mount it read-only (which is absolutely valid), then
> configuration is ready-only, and that's the exactly the effect that
> mounting /etc read-only should have, so playing games with redirecting
> this sounds misleading.
>
> Lennart
>
Yeah if we decide to use the /etc to read-only, we should use like that.
but we could modify some configurations
like group, passwd, smack, mtab and localtime in runtime.
So we use links for that in read-only.
You already knew the systemd's configurations are in /etc/systemd.
It is very valid that /etc is read-only for protecting it.
So system configuration with link and read-only could give satisfaction for
protecting and supporting legacy module needed modification in runtime.
So I want to say I think that (link with read-only) is useful.
so put the "/etc with link and read-only" conversation beside.

I want use the timedated in my system.
timedated only use "/etc/localtime" for system' timezone.
So I should modify timedated source code for my system.
That's why I suggest the option to configure.
Someone to use like me need that option or configuration.
Some system use TZ environment variable for specifying.
and if the TZ does not have value,
default timezone is /etc/localtime or /usr/local/etc/localtime.
In GNU C library, that depends on configuration in installation.
First time, I considered the build configuration like 
"--with-timezone-path=".
but I think the option submitted is better after I see the rootdir 
option in other.
So please consider it with flexible perspective for alternative system.