Comment 12 for bug 1968131

The swtpm user is created as:

swtpm:x:113:121:virtual TPM software stack,,,:/var/lib/swtpm:/bin/false

But
$ ls -laF /var/lib/swtpm
ls: cannot access '/var/lib/swtpm': No such file or directory

I guess we need to give him a better home dir?

For example drop `--no-create-home` from the postinst in /var/lib/dpkg/info/swtpm-tools.postinst?

Testing with
$ sudo mkdir /var/lib/swtpm
$ sudo chown swtpm:swtpm /var/lib/swtpm

Hmm, that was not enough yet - but it feels close ...
It seems that this is due to changes in:

 swtpm (0.6.1-0ubuntu4) jammy; urgency=medium

   * debian/patches/openssl-not-certtool.patch: Use openssl at runtime,
     not certtool.

  -- Steve Langasek <email address hidden> Fri, 05 Nov 2021 13:16:42 -0700

In there the .rnd is added
It refers to
  "RANDFILE = $ENV::HOME/.rnd\n"
And maybe in this mode not only is it user swtpm, but also stripped of HOME?
Might want to access even /.rnd in root?

With the analysis so far I'd mark all but swtpm as invalid and hope to resolve it either in that patch and/or in the way the users home dir is created.