Created
December 28, 2012 16:37
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systemd mount provider for opscode chef. I use this vs. letting chef modify my fstab file. You have to "activate" it in order for it to be used, something like this: Chef::Platform.set :platform => :arch, :resource => :mount, :provider => Chef::Provider::Mount::SystemdMount Caveat Emptor.
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# | |
# Author:: Caleb Tennis (<joshua@opscode.com>) | |
# Copyright:: Copyright (c) 2012 Opscode, Inc | |
# License:: Apache License, Version 2.0 | |
# | |
# Licensed under the Apache License, Version 2.0 (the "License"); | |
# you may not use this file except in compliance with the License. | |
# You may obtain a copy of the License at | |
# | |
# http://www.apache.org/licenses/LICENSE-2.0 | |
# | |
# Unless required by applicable law or agreed to in writing, software | |
# distributed under the License is distributed on an "AS IS" BASIS, | |
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
# See the License for the specific language governing permissions and | |
# limitations under the License. | |
# | |
require 'chef/provider/mount' | |
require 'chef/log' | |
require 'chef/mixin/shell_out' | |
require 'shellwords' | |
class Chef | |
class Provider | |
class Mount | |
class SystemdMount < Chef::Provider::Mount::Mount | |
include Chef::Mixin::ShellOut | |
def initialize(new_resource, run_context) | |
super | |
end | |
def enabled? | |
unless @current_resource.enabled == true | |
systemd_file = systemd_substitute(@new_resource.mount_point) | |
if ::File.exists?("/etc/systemd/system/" + systemd_file) | |
begin | |
if shell_out!("/usr/bin/systemctl is-enabled #{Shellwords.escape(systemd_file)}").exitstatus == 0 | |
@current_resource.enabled(true) | |
end | |
rescue Mixlib::ShellOut::ShellCommandFailed, SystemCallError | |
#TODO | |
end | |
end | |
end | |
end | |
def enable_fs | |
if @current_resource.enabled && mount_options_unchanged? | |
Chef::Log.debug("#{@new_resource} is already enabled - nothing to do") | |
return nil | |
end | |
if network_device? | |
wanted_by = "remote-fs.target" | |
else | |
wanted_by = "local-fs.target" | |
end | |
options = @new_resource.options.nil? ? "defaults" : @new_resource.options.join(",") | |
mp = @new_resource.mount_point | |
type_entry = @new_resource.fstype == "auto" ? "" : "Type=#{@new_resource.fstype}\n" | |
requires = options =~ /_netdev/ ? "Requires=network.target\n" : "\n" | |
::File.open("/etc/systemd/system/" + systemd_substitute(mp), "w") do |sm| | |
sm.puts("[Unit]\nDescription=Mount for #{mp}\nDefaultDependencies=no\n#{requires}\n") | |
sm.puts("[Install]\nWantedBy=#{wanted_by}\n\n") | |
sm.puts("[Mount]\nWhat=#{device_systemd}\nWhere=#{mp}\n#{type_entry}Options=#{options}") | |
end | |
begin | |
shell_out!("/usr/bin/systemctl enable #{Shellwords.escape(systemd_substitute(mp))}") | |
rescue Mixlib::ShellOut::ShellCommandFailed, SystemCallError | |
#TODO | |
end | |
Chef::Log.debug("#{@new_resource} is enabled at #{mp}") | |
end | |
def disable_fs | |
if @current_resource.enabled | |
systemd_file = systemd_substitute(@new_resource.mount_point) | |
if ::File.exists?("/etc/systemd/system/" + systemd_file) | |
begin | |
shell_out!("/usr/bin/systemctl disable #{Shellwords.escape(systemd_file)}") | |
::File.unlink("/etc/systemd/system/" + systemd_file) | |
rescue Mixlib::ShellOut::ShellCommandFailed, SystemCallError | |
#TODO | |
end | |
end | |
else | |
Chef::Log.debug("#{@new_resource} is not enabled - nothing to do") | |
end | |
end | |
private | |
def systemd_substitute(filename) | |
# systemd does some cleansing of device file names before writing them to .mount files. | |
# 1. Leading and trailing slashes are removed. | |
# 2. All other slashes (/) in the filename are changed to dashes (-) | |
# e.g. /home/foo -> home-foo.mount | |
# 3. Any original dashes or non-printable characters in the filename are changed to their C-style escaped equivalents: | |
# e.g. /home/asdf-jkl -> home-asdf\x2djkl.mount | |
stripped_filename = filename[1..-1] if filename =~ /^\// | |
stripped_filename = stripped_filename.chop if stripped_filename =~ /\/$/ | |
stripped_filename = stripped_filename.gsub('-', "\\x2d") | |
stripped_filename = stripped_filename.gsub('/','-') | |
stripped_filename + ".mount" | |
end | |
def device_systemd | |
case @new_resource.device_type | |
when :device | |
@new_resource.device | |
when :label | |
"/dev/disk/by-label/#{@new_resource.device}" | |
when :uuid | |
"/dev/disk/by-uuid/#{@new_resource.device}" | |
end | |
end | |
end | |
end | |
end | |
end |
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