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cmdline_args.rb
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cmdline_args.rb
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# frozen_string_literal: true
# Copyright (c) [2022] SUSE LLC
#
# All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of version 2 of the GNU General Public License as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, contact SUSE LLC.
#
# To contact SUSE LLC about this file by physical or electronic mail, you may
# find current contact information at www.suse.com.
module DInstaller
# This class is responsible for reading DInstaller kernel cmdline options
class CmdlineArgs
CMDLINE_PATH = "/proc/cmdline"
CMDLINE_PREFIX = "dinst."
attr_reader :config_url
attr_reader :args
attr_reader :workdir
# Constructor
#
# @param workdir [String] root directory to read the configuration from
def initialize(workdir: "/")
@workdir = workdir
end
# Reads the kernel command line options
def read
options = File.read(File.join(workdir, CMDLINE_PATH))
@config_url = nil
@args = {}
options.split.each do |option|
next unless option.start_with?(CMDLINE_PREFIX)
key, value = option.split("=")
key.gsub!(CMDLINE_PREFIX, "")
# Ommit config_url from Config options
next @config_url = value if key == "config_url"
if key.include?(".")
section, key = key.split(".")
@args[section] = {} unless @args.keys.include?(section)
@args[section][key] = value
else
@args[key.gsub(CMDLINE_PREFIX, "")] = value
end
end
end
end
end