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Description of problem:

When (re)signing, packages which are already signed with the same key cause the entire signing process to abort when it should simply skip over such packages.

Version-Release number of selected component (if applicable):
rpm-4.8.0-16.el6

How reproducible:
Always (or almost so, there seems to be some other bug in the "identical signature" detection)

Steps to Reproduce:
1. Grab a few rpms
2. rpm --addsign *.rpm
3. Add a few more rpms
4. rpm --addsign *.rpm
  
Actual results:
Step 4 aborts when it finds a package already signed with the same key, possibly leaving others unsigned.

Expected results:
All packages should be processed: packages with identical signature should be skipped and others (re)signed.

Additional info:
This is a regression from RHEL 6.0 due to a backporting error.

Okay it is always reproducable, the "other bug" was actually just missing error message on failure to replace original package instead of a bug in identical signature detection.

*** Bug 744880 has been marked as a duplicate of this bug. ***

Created attachment 527441 [details]
Patch to skip already signed pkgs

This patch makes rpm --resign to skip pkgs already signed with identical signature.

I didn't check if some clean up should be done before continue so this may introduce memory leaks.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2011-1737.html