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#
# Author:: Adam Jacob (<adam@chef.io>)
# Author:: Tyler Cloke (<tyler@chef.io>)
# Copyright:: Copyright 2008-2018, 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 "chef/resource"
require "chef/mixin/securable"
class Chef
class Resource
# Use the link resource to create symbolic or hard links.
#
# A symbolic link—sometimes referred to as a soft link—is a directory entry that associates a file name with a string
# that contains an absolute or relative path to a file on any file system. In other words, “a file that contains a path
# that points to another file.” A symbolic link creates a new file with a new inode that points to the inode location
# of the original file.
#
# A hard link is a directory entry that associates a file with another file in the same file system. In other words,
# “multiple directory entries to the same file.” A hard link creates a new file that points to the same inode as the
# original file.
class Link < Chef::Resource
include Chef::Mixin::Securable
resource_name :link
provides :link
state_attrs :owner # required since it's not a property below
default_action :create
allowed_actions :create, :delete
def initialize(name, run_context = nil)
verify_links_supported!
super
end
property :target_file, String, name_property: true, identity: true
property :to, String
property :link_type, [String, Symbol], coerce: proc { |arg| arg.kind_of?(String) ? arg.to_sym : arg }, equal_to: [ :symbolic, :hard ], default: :symbolic
property :group, [String, Integer], regex: [Chef::Config[:group_valid_regex]]
property :user, [String, Integer], regex: [Chef::Config[:user_valid_regex]]
# make link quack like a file (XXX: not for public consumption)
def path
target_file
end
private
def verify_links_supported!
# On certain versions of windows links are not supported. Make
# sure we are not on such a platform.
if Chef::Platform.windows?
require "chef/win32/file"
begin
Chef::ReservedNames::Win32::File.verify_links_supported!
rescue Chef::Exceptions::Win32APIFunctionNotImplemented => e
Chef::Log.fatal("Link resource is not supported on this version of Windows")
raise e
end
end
end
end
end
end
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