[libvirt PATCH 7/9] remote: introduce virtd-nc helper binary

[Michal Privoznik]

On 7/9/20 8:36 PM, Daniel P. Berrangé wrote:
> When accessing libvirtd over a SSH tunnel, the remote driver must spawn
> the remote 'nc' process, pointing it to the libvirtd socket path. This
> is problematic for a number of reasons:
> 
>   - The socket path varies according to the --prefix chosen at build
>     time. The remote client is seeing the local prefix, but what we
>     need is the remote prefix
> 
>   - The socket path varies according to remote env variables, such as
>     the XDG_RUNTIME_DIR location. Again we see the local XDG_RUNTIME_DIR
>     value, but what we need is the remote value (if any)
> 
>   - We can not able to autospawn the libvirtd daemon for session mode
>     access
> 
> To address these problems this patch introduces the 'virtd-nc' helper
> program which takes the URI for the remote driver as a CLI parameter.
> It then figures out the socket path to connect to using the same
> code as the remote driver does on the remote host.
> 
> Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
> ---
>   build-aux/syntax-check.mk  |   2 +-
>   po/POTFILES.in             |   1 +
>   src/remote/Makefile.inc.am |  30 +++
>   src/remote/remote_nc.c     | 424 +++++++++++++++++++++++++++++++++++++
>   src/rpc/virnetsocket.h     |   1 +
>   5 files changed, 457 insertions(+), 1 deletion(-)
>   create mode 100644 src/remote/remote_nc.c

The spec file needs to be updated too.

Michal