Yes, I learned this the other day from a response
from this list:
use "%triggerpostun" - see /usr/share/doc/rpm-{version}/triggers
for details.
This will enable you to trigger code based on faulty-1.0.0-55
packages removal.
On Thu, 2004-09-09 at 03:33, Sudeep_Das@xxxxxxxxxx wrote:
> Dear all ,
> here is a problem I am stuck with.
> Problem statement:
> 1. The guy working on this project before me created a non relocatable
> rpm ( say faulty-1.0.0-55.i686.rpm )which stores its shared libs and
> executables in say /opt/Product/binaries
> 2. In the postun , he added
> if [ -d /opt/Product/binaries] ;then
> rm -rf /opt/Product/binaries
> fi
> 3. This rpm was shipped and went to our customers
> 4. I now need to release an upgrade( say faulty-1.0.0-85.i686.rpm)
> The way upgrade will work (roughly ) is ( from what ever little
> I know)
> a. run the install for the new rpm ( pre post etc)
> b. run the uninstall for the older rpm ( preun, postun )
> Step a above will copy the new binaries to /opt/Product/binaries
> Step b ,with the rpm which is already shipped and in use , will
> delete this directory and render my product useless
>
> How to solve this:
> My idea (conceptual and hypothetical ):
> 1. Create a patch executable/rpm( whatever ) which interacts with the
> rpm database ,
> 2. This patch
> a. Creates an entry say faulty-patch in the rpm db
> b. Removes the offending postun of the older rpm
> 3. Next upgrade package released by us will have a dependency on the
> patch
>
> Looking up rpmlib , I could not find apis which let me selectively
> modify/edit records. I looked up maximum rpm , but could not get much
> other than how to traverse the db
>
> Questions:
> 1. Anyone has a better solution ?
> 2. Anyone with rpm api expertise give me hints on the correct apis ( if
> there are any that can do what I want ) ?
>
> Regards
>
>
>
>
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