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#
# Author:: Antima Gupta (<agupta@chef.io>)
# Copyright:: Copyright (c) Chef Software 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_relative "../mount"
class Chef
class Provider
class Mount
class Linux < Chef::Provider::Mount::Mount
provides :mount, os: "linux"
# Check to see if the volume is mounted.
# "findmnt" outputs the mount points with volume.
# Convert the mount_point of the resource to a real path in case it
# contains symlinks in its parents dirs.
def loop_mount_points
# get loop_mount_points only if not initialized earlier
@loop_mount_points ||= shell_out!("losetup -a").stdout
rescue Errno::ENOENT
@loop_mount_points = ""
end
def mounted?
mounted = false
real_mount_point = if ::File.exists? @new_resource.mount_point
::File.realpath(@new_resource.mount_point)
else
@new_resource.mount_point
end
shell_out!("findmnt -rn").stdout.each_line do |line|
case line
# Permalink for device already mounted to mount point for : https://rubular.com/r/L0RNnD4gf2DJGl
when /\A#{Regexp.escape(real_mount_point)}\s+#{device_mount_regex}\s/
mounted = true
logger.trace("Special device #{device_logstring} mounted as #{real_mount_point}")
# Permalink for loop type devices mount points https://rubular.com/r/a0bS4p2RvXsGxx
when %r{\A#{Regexp.escape(real_mount_point)}\s+\/dev\/loop+[0-9]+\s}
loop_mount_points.each_line do |mount_point|
if mount_point.include? device_real
mounted = true
break
end
end
# Permalink for multiple devices mounted to the same mount point(i.e. '/proc') https://rubular.com/r/a356yzspU7N9TY
when %r{\A#{Regexp.escape(real_mount_point)}\s+([/\w])+\s}
mounted = false
logger.trace("Special device #{$~[1]} mounted as #{real_mount_point}")
# Permalink for bind device mounted to an existing mount point: https://rubular.com/r/QAE0ilL3sm3Ldz
when %r{\A#{Regexp.escape(real_mount_point)}\s+([/\w])+\[#{device_mount_regex}\]\s}
mounted = true
logger.trace("Bind device #{device_logstring} mounted as #{real_mount_point}")
# Permalink for network device mounted to an existing mount point: https://rubular.com/r/JRTXXGFdQtwCD6
when /\A#{Regexp.escape(real_mount_point)}\s+#{device_mount_regex}\[/
mounted = true
logger.trace("Network device #{device_logstring} mounted as #{real_mount_point}")
# Permalink for network device mounted with a space in device name https://rubular.com/r/CK5zWWms96CRES
# See the comment in "device_with_space_escape" for an explanation what's going here.
when /\A#{Regexp.escape(real_mount_point)}\s+#{device_with_space_escape}\s/
mounted = true
logger.trace("Network device #{device_logstring} mounted as #{real_mount_point}")
end
end
@current_resource.mounted(mounted)
end
def remount_require?
remount_require = true
real_mount_point = shell_out("findmnt --kernel #{@new_resource.device}| tail -1 | awk '{print$4}'").stdout.split(",")
new_options = @new_resource.options
remount_require = false if (new_options - real_mount_point).empty?
remount_require
end
end
end
end
end
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