2 -- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 -- Copyright (c) 2018 Kyle Evans <kevans@FreeBSD.org>
6 -- Redistribution and use in source and binary forms, with or without
7 -- modification, are permitted provided that the following conditions
9 -- 1. Redistributions of source code must retain the above copyright
10 -- notice, this list of conditions and the following disclaimer.
11 -- 2. Redistributions in binary form must reproduce the above copyright
12 -- notice, this list of conditions and the following disclaimer in the
13 -- documentation and/or other materials provided with the distribution.
15 -- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 -- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 -- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 -- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 -- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 -- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 -- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 -- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 -- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 -- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 local config = require("config")
31 local core = require("core")
36 -- Parses arguments to boot and returns two values: kernel_name, argstr
37 -- Defaults to nil and "" respectively.
38 -- This will also parse arguments to autoboot, but the with_kernel argument
39 -- will need to be explicitly overwritten to false
40 local function parseBootArgs(argv, with_kernel)
41 if with_kernel == nil then
54 for _, v in ipairs(argv) do
55 if with_kernel and v:sub(1,1) ~= "-" then
58 argstr = argstr .. " " .. v
62 return kernel_name, argstr
68 local function setModule(module, loading)
69 if loading and config.enableModule(module) then
70 print(module .. " will be loaded")
71 elseif not loading and config.disableModule(module) then
72 print(module .. " will not be loaded")
76 -- Declares a global function cli_execute that attempts to dispatch the
77 -- arguments passed as a lua function. This gives lua a chance to intercept
78 -- builtin CLI commands like "boot"
79 -- This function intentionally does not follow our general naming guideline for
80 -- functions. This is global pollution, but the clearly separated 'cli' looks
81 -- more like a module indicator to serve as a hint of where to look for the
82 -- corresponding definition.
83 function cli_execute(...)
87 return loader.command(...)
90 local cmd_name = argv[1]
91 local cmd = cli[cmd_name]
92 if cmd ~= nil and type(cmd) == "function" then
93 -- Pass argv wholesale into cmd. We could omit argv[0] since the
94 -- traditional reasons for including it don't necessarily apply,
95 -- it may not be totally redundant if we want to have one global
96 -- handling multiple commands
99 return loader.command(...)
104 function cli_execute_unparsed(str)
105 return cli_execute(loader.parse(str))
110 function cli.boot(...)
111 local _, argv = cli.arguments(...)
112 local kernel, argstr = parseBootArgs(argv)
113 if kernel ~= nil then
114 loader.perform("unload")
115 config.selectKernel(kernel)
120 function cli.autoboot(...)
121 local _, argv = cli.arguments(...)
122 local argstr = parseBootArgs(argv, false)
123 core.autoboot(argstr)
126 cli['boot-conf'] = function(...)
127 local _, argv = cli.arguments(...)
128 local kernel, argstr = parseBootArgs(argv)
129 if kernel ~= nil then
130 loader.perform("unload")
131 config.selectKernel(kernel)
133 core.autoboot(argstr)
136 cli['read-conf'] = function(...)
137 local _, argv = cli.arguments(...)
138 config.readConf(assert(core.popFrontTable(argv)))
141 cli['reload-conf'] = function()
145 cli["enable-module"] = function(...)
146 local _, argv = cli.arguments(...)
148 print("usage error: enable-module module")
152 setModule(argv[1], true)
155 cli["disable-module"] = function(...)
156 local _, argv = cli.arguments(...)
158 print("usage error: disable-module module")
162 setModule(argv[1], false)
165 cli["toggle-module"] = function(...)
166 local _, argv = cli.arguments(...)
168 print("usage error: toggle-module module")
172 local module = argv[1]
173 setModule(module, not config.isModuleEnabled(module))
176 -- Used for splitting cli varargs into cmd_name and the rest of argv
177 function cli.arguments(...)
180 cmd_name, argv = core.popFrontTable(argv)
181 return cmd_name, argv