Getting realocated dir in the postinstall (or other) scriptlets ?

[cdr53x at free.fr]

Worked like a charm , thank you very much Panu ! 

----- Mail original -----
De: "Panu Matilainen" <pmatilai at laiskiainen.org>
À: rpm-list at lists.rpm.org
Envoyé: Jeudi 7 Janvier 2016 19:01:42
Objet: Re: Getting realocated dir in the postinstall (or other) scriptlets ?

On 01/07/2016 06:42 PM, cdr53x at free.fr wrote:
> Hi,
>
> I'm working on an RPM package that deploys files to /opt and /etc. In most of the cases it works perfectly, excepted that for a given environment, where writing to /etc is prohibited  ....
>
> So I used Relocations in order to deploy the /etc files in some other location :
>
>     Relocations : /opt /etc

I assume you mean (the above is how rpm -qi shows it though):

Prefixes: /opt /etc

>
> By specifying --relocate option I can deploy the /etc files into another location :
>
>     rpm -ivh --relocate /etc=/my/path/to/etc mypackage.rpm
>
> Now the issue is that in the postinstall script, there are some hard coded references to /etc that obviously don't get replaced when the package is deployed :
>
>     echo `hostname --fqdn` > /etc/myapp/host.conf
>     ( this is just an example )
>
> I hope that there is a way (keyword, ... ) to use instead of hard coded paths in order to perform the substitutions during rpm execution.

The prefixes are passed to scriptlets via $RPM_INSTALL_PREFIX<n> 
environment variables, <n> is the index of supported prefixes starting 
from zero. So in the above,

/opt is $RPM_INSTALL_PREFIX0
/etc is $RPM_INSTALL_PREFIX1

So the scriptlet example becomes:

     echo `hostname --fqdn` > $RPM_INSTALL_PREFIX1/myapp/host.conf

	- Panu -

> If you have any information on this I'd really appreciate some help.
>
> Thanks per advance
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> Rpm-list at lists.rpm.org
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