Differential D25447 Diff 78525 share/examples/flua/libjail.lua

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share/examples/flua/libjail.lua

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				#!/usr/libexec/flua
				--[[
				/*-
				* SPDX-License-Identifier: BSD-2-Clause
				*
				* Copyright (c) 2020, Ryan Moeller <freqlabs@FreeBSD.org>
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions
				* are met:
				* 1. Redistributions of source code must retain the above copyright
				* notice, this list of conditions and the following disclaimer.
				* 2. Redistributions in binary form must reproduce the above copyright
				* notice, this list of conditions and the following disclaimer in the
				* documentation and/or other materials provided with the distribution.
				*
				* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
				* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
				* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				* SUCH DAMAGE.
				*
				* $FreeBSD$
				*/
				]]--

				jail = require("jail")
				ucl = require("ucl")

				name = "demo"

				-- Create a persistent jail named "demo" with all other parameters default.
				jid, err = jail.setparams(name, {persist = "true"}, jail.CREATE)
				if not jid then
				error(err)
				end

				-- Get a list of all known jail parameter names.
				allparams = jail.allparams()

				-- Get all the parameters of the jail we created.
				jid, res = jail.getparams(name, allparams)
				if not jid then
				error(res)
				end

				-- Display the jail's parameters as a pretty-printed JSON object.
				print(ucl.to_json(res))

				-- Update the "persist" parameter to "false" to remove the jail.
				jid, err = jail.setparams(name, {persist = "false"}, jail.UPDATE)
				if not jid then
				error(err)
				end