This commit refactors the freebsd networking to:
1. Use predictable network naming
2. Properly handle DHCP vs static networks on up and reload [GH-5852]
3. Perform all networking configuration in a single command to prevent
partial configuration.
This fixes a fairly large tempfile leak. Vagrant uses a template
renderer to write network configuration files locally to disk. Then,
that temporarily file is uploaded to the remote host and moved into
place. Since Vagrant is such a short-lived process, GC never came along
and cleaned up those tempfiles, resulting in many temporary files being
created through regular Vagrant usage.
The Util::Tempfile class uses a block to ensure the temporary file is
deleted when the block finishes. This API required small tweaks to the
usage, but provides more safety to ensure the files are deleted.
When using pty=true, removing files using sudo may request confirmation,
which will hang the connection.
Similarly, sometimes assumptions about file existence may be wrong and
in those cases it seems better to continue on as long as the file does
not exist, so -f makes sense there, too.
https://github.com/mitchellh/vagrant/issues/4307
Fix details:
Pass network interface name to template renderer and use it
in static and dhcp templates to render /etc/rc.conf entries.
modified: plugins/guests/freebsd/cap/configure_networks.rb
modified: templates/guests/freebsd/network_dhcp.erb
modified: templates/guests/freebsd/network_static.erb
Verification scenario:
Check if /etc/rc.conf contains vtnet entries when paravirtualized
NIC devices are used in FreeBSD guest.
The default shell is "bash -l" which does not get installed by default
on FreeBSD. This change allows the plugin to override the default shell
and use a known installed shell (sh).
Seth Vargo
Andres Montalban
Mitchell Hashimoto
Leo Simons
Kostyantyn Fomin
Kalman Hazins
Doug Stevenson
Shon M
Mark Peek