The idea behind this is so that libvirt can create the log file, set all
DAC/SELinux labels and just pass pre-opened FD to passt.

You can view my WIP patches for libvirt here:

https://gitlab.com/MichalPrivoznik/libvirt/-/commit/5bbe40087d6888a7c4031a2…

Michal Privoznik (2):
  util: Introduce set_cloexec()
  conf, log: Introduce --log-fd option

 conf.c  | 29 +++++++++++++++++++++++++----
 log.c   | 17 ++++++++++++-----
 log.h   |  2 +-
 passt.1 |  5 +++++
 util.c  | 17 +++++++++++++++++
 util.h  |  1 +
 6 files changed, 61 insertions(+), 10 deletions(-)

-- 
2.39.3