97b5882262
By looking at the code, it seems that it was a goal to make the sudo wrapper path configurable through the Vagrantfile, but it wasn't effective and didn't make much sense (that kind of config is a per-host config, not a per-guest one). This caused the cause to be needlessly complex by giving the Provider the responsibility of instanciating the wrapper. This commit gets rid of that. I didn't get rid of `sudo_wrapper` injection in `Driver` and `Driver::CLI` constructors because they're needed for tests. I'm not ready to tackle this yet.
100 lines
3 KiB
Ruby
100 lines
3 KiB
Ruby
module Vagrant
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module LXC
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class SudoWrapper
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# Include this so we can use `Subprocess` more easily.
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include Vagrant::Util::Retryable
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attr_reader :wrapper_path
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def self.dest_path
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"/usr/local/bin/vagrant-lxc-wrapper"
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end
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def initialize()
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@wrapper_path = Pathname.new(SudoWrapper.dest_path).exist? && SudoWrapper.dest_path || nil
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@logger = Log4r::Logger.new("vagrant::lxc::sudo_wrapper")
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end
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def run(*command)
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options = command.last.is_a?(Hash) ? command.last : {}
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# Avoid running LXC commands with a restrictive umask.
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# Otherwise disasters occur, like the container root directory
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# having permissions `rwxr-x---` which prevents the `vagrant`
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# user from accessing its own home directory; among other
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# problems, SSH cannot then read `authorized_keys`!
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old_mask = File.umask
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File.umask(old_mask & 022) # allow all `r` and `x` bits
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begin
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if @wrapper_path && !options[:no_wrapper]
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command.unshift @wrapper_path
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execute *(['sudo'] + command)
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else
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execute *(['sudo', '/usr/bin/env'] + command)
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end
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ensure
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File.umask(old_mask)
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end
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end
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private
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# TODO: Review code below this line, it was pretty much a copy and
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# paste from VirtualBox base driver and has no tests
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def execute(*command, &block)
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# Get the options hash if it exists
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opts = {}
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opts = command.pop if command.last.is_a?(Hash)
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tries = 0
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tries = 3 if opts[:retryable]
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sleep = opts.fetch(:sleep, 1)
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# Variable to store our execution result
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r = nil
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retryable(:on => LXC::Errors::ExecuteError, :tries => tries, :sleep => sleep) do
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# Execute the command
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r = raw(*command, &block)
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# If the command was a failure, then raise an exception that is
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# nicely handled by Vagrant.
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if r.exit_code != 0
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if @interrupted
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raise LXC::Errors::SubprocessInterruptError, command.inspect
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else
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raise LXC::Errors::ExecuteError,
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command: command.inspect, stderr: r.stderr, stdout: r.stdout, exitcode: r.exit_code
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end
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end
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end
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# Return the output, making sure to replace any Windows-style
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# newlines with Unix-style.
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stdout = r.stdout.gsub("\r\n", "\n")
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if opts[:show_stderr]
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{ :stdout => stdout, :stderr => r.stderr.gsub("\r\n", "\n") }
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else
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stdout
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end
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end
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def raw(*command, &block)
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int_callback = lambda do
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@interrupted = true
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@logger.info("Interrupted.")
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end
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# Append in the options for subprocess
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command << { :notify => [:stdout, :stderr] }
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Vagrant::Util::Busy.busy(int_callback) do
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Vagrant::Util::Subprocess.execute(*command, &block)
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end
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end
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end
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end
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end
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