Module: VagrantPlugins::Parallels::Util::UnixMountHelpers

Included in:
GuestLinuxCap::MountParallelsSharedFolder, SyncedFolderCap::MountOptions
Defined in:
lib/vagrant-parallels/util/unix_mount_helpers.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(klass) ⇒ Object 



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# File 'lib/vagrant-parallels/util/unix_mount_helpers.rb', line 9

def self.extended(klass)
  if !klass.class_variable_defined?(:@@logger)
    klass.class_variable_set(:@@logger, Log4r::Logger.new(klass.name.downcase))
  end
  klass.extend Vagrant::Util::Retryable
end

Instance Method Details

#detect_owner_group_ids(machine, guest_path, mount_options, options) ⇒ Object 



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# File 'lib/vagrant-parallels/util/unix_mount_helpers.rb', line 16

def detect_owner_group_ids(machine, guest_path, mount_options, options)
  mount_uid = find_mount_options_id("uid", mount_options)
  mount_gid = find_mount_options_id("gid", mount_options)

  if mount_uid.nil?
    if options[:owner].to_i.to_s == options[:owner].to_s
      mount_uid = options[:owner]
      self.class_variable_get(:@@logger).debug("Owner user ID (provided): #{mount_uid}")
    else
      output = {stdout: '', stderr: ''}
      uid_command = "id -u #{options[:owner]}"
      machine.communicate.execute(uid_command,
        error_class: Errors::ParallelsMountFailed,
        error_key: :parallels_mount_failed,
        command: uid_command,
        output: output[:stderr]
      ) { |type, data| output[type] << data if output[type] }
      mount_uid = output[:stdout].chomp
      self.class_variable_get(:@@logger).debug("Owner user ID (lookup): #{options[:owner]} -> #{mount_uid}")
    end
  else
    machine.ui.warn "Detected mount owner ID within mount options. (uid: #{mount_uid} guestpath: #{guest_path})"
  end

  if mount_gid.nil?
    if options[:group].to_i.to_s == options[:group].to_s
      mount_gid = options[:group]
      self.class_variable_get(:@@logger).debug("Owner group ID (provided): #{mount_gid}")
    else
      begin
        output = {stdout: '', stderr: ''}
        gid_command = "getent group #{options[:group]}"
        machine.communicate.execute(gid_command,
          error_class: Errors::ParallelsMountFailed,
          error_key: :parallels_mount_failed,
          command: gid_command,
          output: output[:stderr]
        ) { |type, data| output[type] << data if output[type] }
        mount_gid = output[:stdout].split(':').at(2).to_s.chomp
        self.class_variable_get(:@@logger).debug("Owner group ID (lookup): #{options[:group]} -> #{mount_gid}")
      rescue Vagrant::Errors::ParallelsMountFailed
        if options[:owner] == options[:group]
          self.class_variable_get(:@@logger).debug("Failed to locate group `#{options[:group]}`. Group name matches owner. Fetching effective group ID.")
          output = {stdout: ''}
          result = machine.communicate.execute("id -g #{options[:owner]}",
            error_check: false
          ) { |type, data| output[type] << data if output[type] }
          mount_gid = output[:stdout].chomp if result == 0
          self.class_variable_get(:@@logger).debug("Owner group ID (effective): #{mount_gid}")
        end
        raise unless mount_gid
      end
    end
  else
    machine.ui.warn "Detected mount group ID within mount options. (gid: #{mount_gid} guestpath: #{guest_path})"
  end
  {:gid => mount_gid, :uid => mount_uid}
end

#emit_upstart_notification(machine, guest_path) ⇒ Object 



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# File 'lib/vagrant-parallels/util/unix_mount_helpers.rb', line 95

def emit_upstart_notification(machine, guest_path)
  # Emit an upstart event if we can
  machine.communicate.sudo <<-EOH.gsub(/^ {12}/, "")
      if command -v /sbin/init && /sbin/init 2>/dev/null --version | grep upstart; then
        /sbin/initctl emit --no-wait vagrant-mounted MOUNTPOINT=#{guest_path}
      fi
    EOH
end

#find_mount_options_id(id_name, mount_options) ⇒ Object 



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# File 'lib/vagrant-parallels/util/unix_mount_helpers.rb', line 75

def find_mount_options_id(id_name, mount_options)
  id_line = mount_options.detect{|line| line.include?("#{id_name}=")}
  if id_line
    match = id_line.match(/,?#{Regexp.escape(id_name)}=(?<option_id>\d+),?/)
    found_id = match["option_id"]
    updated_id_line = [
      match.pre_match,
      match.post_match
    ].find_all{|string| !string.empty?}.join(',')
    if updated_id_line.empty?
      mount_options.delete(id_line)
    else
      idx = mount_options.index(id_line)
      mount_options.delete(idx)
      mount_options.insert(idx, updated_id_line)
    end
  end
  found_id
end

#merge_mount_options(base, overrides) ⇒ Object 



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# File 'lib/vagrant-parallels/util/unix_mount_helpers.rb', line 104

def merge_mount_options(base, overrides)
  base = base.join(",").split(",")
  overrides = overrides.join(",").split(",")
  b_kv = Hash[base.map{|item| item.split("=", 2) }]
  o_kv = Hash[overrides.map{|item| item.split("=", 2) }]
  merged = {}.tap do |opts|
    (b_kv.keys + o_kv.keys).uniq.each do |key|
      opts[key] = o_kv.fetch(key, b_kv[key])
    end
  end
  merged.map do |key, value|
    [key, value].compact.join("=")
  end
end