Comment 13 for bug 1968131

Ok, it has
  HOME=/var/lib/swtpm

So due to the config being
  "RANDFILE = $ENV::HOME/.rnd\n"
one might expect `/var/lib/swtpm/.rnd`
But that isn't what it will resolve to, instead we see in strace that it uses:
  "./.rnd"

And surprise :-P, it does not set CWD, I checked a running program and got

# executed in /home/ubuntu:
$ sudo ls -laF /proc/$(pidof swtpm-localca)/cwd
lrwxrwxrwx 1 swtpm swtpm 0 Apr 7 13:34 /proc/3260/cwd -> /home/ubuntu/

# executed by libvirt for guest creation
$ while /bin/true; do sudo ls -laF /proc/$(pidof swtpm-localca)/cwd 2>/dev/null; done
lrwxrwxrwx 1 swtpm swtpm 0 Apr 7 13:37 /proc/3990/cwd -> //