Re: apache2 run script

[Charlie Brady <charlieb-supervision@budge.apana.org.au>]

On Fri, 6 Oct 2006, Alex Efros wrote:

> Hi!
>
> On Fri, Oct 06, 2006 at 10:30:12AM -0400, Charlie Brady wrote:
>>> exec env -i PATH=$PATH apache2 -DNO_DETACH -k start -DSSL
>>
>> As a matter of interest, why do you do "env -i PATH=$PATH"? One of the
>> things that runit gives you is a guaranteed consistent environment,
>> inherited from runsvdir.
...
> exec env -i PATH=$PATH LD_PRELOAD=libREV.so \
>    apache2 -DNO_DETACH -k start -DDOC -DSSL -DFASTCGI # -DPHP4
...
> 3) libREV.so is our trick for web development. This library able to
>   intercept all syscalls for opening files and redirect them to different
>   files if needed. Looks like rootkit. ;-) This is for working with
>   different 'revisions' of same CGI/html file at same time.
>
> So... because of LD_PRELOAD and libREV's nature I prefer to not export
> LD_PRELOAD to processes which doesn't need it. Most safe way - provide
> this variable only for apache2 process using `env` or `envdir` or `chpst -e`.

I don't see any advantage over:

export LD_PRELOAD=libREV.so
exec apache2 -DNO_DETACH -k start -DDOC -DSSL -DFASTCGI # -DPHP4

or

LD_PRELOAD=libREV.so exec apache2 -DNO_DETACH -k start \
   -DDOC -DSSL -DFASTCGI # -DPHP4