[Rpm-maint] [Suse patch] Checking for identical packages on install/upgrade

Michael Schroeder mls at suse.de
Tue Jun 5 14:50:18 UTC 2007

On Mon, Jun 04, 2007 at 11:00:16AM +0300, Panu Matilainen wrote:
> Please do. I'm not claiming you're not right, seeing the problem would 
> help *me* understand it properly :)

Say you have Jeff's rpmHeadersIdentical() in depend.cs. If you
have two packages with same NEVR but different PKGIDs, the first
one installed. If you try to update to the second one, depends.c
will detect that they are different and add an erase element
to the transaction. In psm.c, the install will find the first
package installed and set fi->record to the header offset.
In PSM_POST of the PSM_PKGINSTALL rpm will then remove the
header from the database.
Later, when the package erase transaction element is due, the
header will already be gone, so the erase will fail, thus the
transaction fails and rpm exits with status 1.
I actually expected some error message, though. Oh well...


Michael Schroeder                                   mls at suse.de
SUSE LINUX Products GmbH, GF Markus Rex, HRB 16746 AG Nuernberg

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