[Nut-upsdev] Environment Variables

[Keven L. Ates]

On Fri, May 27, 2011 at 2:20 PM, Stuart D. Gathman <stuart at bmsi.com> wrote:

> On Fri, 27 May 2011, Keven L. Ates wrote:
>
>  A problem I see with the above code is that the env checking function
>> appears to be called every time a variable is needed (see statepath
>> calls). This practice should probable be changed so that the env variable is
>> loaded
>> once at program startup and stored in a global var/struct and then used as
>> needed.  This is so that changes to a env var within the programs runtime
>> context does not modify behavior or cause error, such as changing where it
>> looks for the PID file AFTER the PID file was created.
>>
>
> Under unix, at least, environment vars are copied to a process when it is
> created, and can only be changed by the process itself.  So getenv()
> in effect *is* the global var/struct you want.  Is Windows different
> in that regard?
>
> --
>              Stuart D. Gathman <stuart at bmsi.com>
>    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
> "Confutatis maledictis, flammis acribus addictis" - background song for
> a Microsoft sponsored "Where do you want to go from here?" commercial.
>

That is generally the case, but then again people wish to do some odd
things:
http://stackoverflow.com/questions/205064/is-there-a-way-to-change-another-processs-environment-variables

Keven
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