[Bug 1336663] Re: lightdm uses wrong ccache name on pam_krb5 credentials refresh

[Robert Ancell]

We do have the PAM handle open but it's in a subprocess that the daemon
has no communication with. It was my assumption (fear) that we might
need to access it for credential refreshing. This will take quite some
refactoring to make this work but should be possible.

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https://bugs.launchpad.net/bugs/1336663

Title:
  lightdm uses wrong ccache name on pam_krb5 credentials refresh

Status in Light Display Manager:
  Triaged
Status in “libpam-krb5” package in Ubuntu:
  New
Status in “lightdm” package in Ubuntu:
  Triaged

Bug description:
  As already noted by Brian Knoll in https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1296276/comments/24
  lightdm 1.10.1-0ubuntu1 uses an inappropriate credentials cache, /tmp/krb5cc_0, when refreshing Kerberos credentials on screen unlock.

  I couldn't find the new bug Robert Ancell called for in
  https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1296276/comments/27
  so I'm opening one now.

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