[Bug 817792] Re: pkgstripfiles doesn't preserve permissions of png files

[Lionel Le Folgoc]

I added a quick'n'dirty'n'incomplete test to pkgbinarymangler to compare modes (cf attachment), and it fails for me in my oneiric chroot:
======================================================================
FAIL: test_png_permissions (__main__.T)
Ensure that the file attributes are preserved
----------------------------------------------------------------------
Traceback (most recent call last):
  File "test/run", line 721, in test_png_permissions
    self.assertEqual(statinfo_orig.st_mode, statinfo_ship.st_mode)
AssertionError: 33188 != 33204

----------------------------------------------------------------------

** Patch added: "test_modes.patch"
   https://bugs.launchpad.net/ubuntu/+source/pkgbinarymangler/+bug/817792/+attachment/2290149/+files/test_modes.patch

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Title:
  pkgstripfiles doesn't preserve permissions of png files

Status in “pkgbinarymangler” package in Ubuntu:
  Confirmed

Bug description:
  pkgstripfiles runs advpng which doesn't preserve file permissions.

  For example in https://launchpadlibrarian.net/76159822
  /buildlog_ubuntu-
  oneiric-i386.ksnapshot_4%3A4.7.0-0ubuntu1_BUILDING.txt.gz

  -rw-r--r-- root/root     91025 2011-05-20 20:36 ./usr/share/doc/kde/HTML/en/ksnapshot/window.png
  -rw-rw-r-- root/root     34949 2011-07-28 14:34 ./usr/share/doc/kde/HTML/en/ksnapshot/send-to-menu.png

  send-to-menu.png has wrong permissions because advpng was able to
  optimize it.

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