2 -- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 -- Copyright (c) 2018 Kyle Evans <kevans@FreeBSD.org>
5 -- All rights reserved.
7 -- Redistribution and use in source and binary forms, with or without
8 -- modification, are permitted provided that the following conditions
10 -- 1. Redistributions of source code must retain the above copyright
11 -- notice, this list of conditions and the following disclaimer.
12 -- 2. Redistributions in binary form must reproduce the above copyright
13 -- notice, this list of conditions and the following disclaimer in the
14 -- documentation and/or other materials provided with the distribution.
16 -- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 -- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 -- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 -- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 -- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 -- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 -- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 -- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 -- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 -- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 local config = require("config")
32 local core = require("core")
37 -- Parses arguments to boot and returns two values: kernel_name, argstr
38 -- Defaults to nil and "" respectively.
39 -- This will also parse arguments to autoboot, but the with_kernel argument
40 -- will need to be explicitly overwritten to false
41 local function parseBootArgs(argv, with_kernel)
42 if with_kernel == nil then
55 for _, v in ipairs(argv) do
56 if with_kernel and v:sub(1,1) ~= "-" then
59 argstr = argstr .. " " .. v
63 return kernel_name, argstr
69 -- Declares a global function cli_execute that attempts to dispatch the
70 -- arguments passed as a lua function. This gives lua a chance to intercept
71 -- builtin CLI commands like "boot"
72 -- This function intentionally does not follow our general naming guideline for
73 -- functions. This is global pollution, but the clearly separated 'cli' looks
74 -- more like a module indicator to serve as a hint of where to look for the
75 -- corresponding definition.
76 function cli_execute(...)
84 local cmd_name = argv[1]
85 local cmd = cli[cmd_name]
86 if cmd ~= nil and type(cmd) == "function" then
87 -- Pass argv wholesale into cmd. We could omit argv[0] since the
88 -- traditional reasons for including it don't necessarily apply,
89 -- it may not be totally redundant if we want to have one global
90 -- handling multiple commands
100 function cli.boot(...)
101 local _, argv = cli.arguments(...)
102 local kernel, argstr = parseBootArgs(argv)
103 if kernel ~= nil then
104 loader.perform("unload")
105 config.selectKernel(kernel)
110 function cli.autoboot(...)
111 local _, argv = cli.arguments(...)
112 local argstr = parseBootArgs(argv, false)
113 core.autoboot(argstr)
116 -- Used for splitting cli varargs into cmd_name and the rest of argv
117 function cli.arguments(...)
120 cmd_name, argv = core.popFrontTable(argv)
121 return cmd_name, argv