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Adds support for running from inside a wsl2 vm #279

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Adds support for running from inside a wsl2 vm #279

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f4c92c9
adds support for wsl2
vafschoen Oct 15, 2020
4b0822e
fixed check to determine if we are in wsl2
vafschoen Oct 15, 2020
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44 changes: 41 additions & 3 deletions lib/vagrant-hostmanager/hosts_file/updater.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -55,13 +55,34 @@ def update_host
# copy and modify hosts file on host with Vagrant-managed entries
file = @global_env.tmp_path.join('hosts.local')

if WindowsSupport.windows?
if WindowsSupport.windows? || WindowsSupport.wsl?
# lazily include windows Module
class << self
include WindowsSupport unless include? WindowsSupport
end
hosts_location = "#{ENV['WINDIR']}\\System32\\drivers\\etc\\hosts"
copy_proc = Proc.new { windows_copy_file(file, hosts_location) }
windir = ENV['WINDIR']
if WindowsSupport.wsl?
Dir.chdir('/mnt/c'){
windir = `cmd.exe /c echo %WINDIR%`.strip
}
# convert wsl path to windows path
if file.to_s =~ /\/mnt\/[a-z]\//
win_file = file.to_s.sub(/^\/mnt\/([a-z])\//, '\1:\\').gsub('/', '\\')
else
win_file = "\\\\wsl\$\\#{ENV['WSL_DISTRO_NAME']}" + file.to_s.gsub('/', '\\')
end
win_hosts_location = "#{windir}\\System32\\drivers\\etc\\hosts"
hosts_location = "/mnt/" + windir[0].downcase + "/" + windir[3..-1] + "/System32/drivers/etc/hosts"

# add to both, windows host and wsl machine
copy_proc = Proc.new {
wsl_copy_file(file, hosts_location, win_file, win_hosts_location)
`[ -w "/etc/hosts" ] && cat "#{file}" > "/etc/hosts" || sudo cp "#{file}" "/etc/hosts"`
}
else
hosts_location = "#{windir}\\System32\\drivers\\etc\\hosts"
copy_proc = Proc.new { windows_copy_file(file, hosts_location) }
end
line_endings = "crlf"
else
hosts_location = '/etc/hosts'
Expand All @@ -70,6 +91,9 @@ class << self
end

FileUtils.cp(hosts_location, file)
if WindowsSupport.wsl?
FileUtils.chmod("+w", file)
end

if update_file(file, nil, true, line_endings)
copy_proc.call
Expand Down Expand Up @@ -183,6 +207,10 @@ def self.windows?
RbConfig::CONFIG['host_os'] =~ /mswin|mingw|cygwin/
end

def self.wsl?
ENV.include?('WSLENV')
end

require 'win32ole' if windows?

def windows_copy_file(source, dest)
Expand All @@ -195,6 +223,16 @@ def windows_copy_file(source, dest)
end
end

def wsl_copy_file(source, dest, win_source, win_dest)
begin
# First, try Ruby copy
FileUtils.cp(source, dest)
rescue Errno::EACCES
# Access denied, try with elevated privileges
system('powershell.exe', 'Start-Process -Verb Runas -FilePath cmd.exe -Argumentlist "/C","copy","' + win_source + '","' + win_dest + '"')
end
end

private

def windows_copy_file_elevated(source, dest)
Expand Down