2 -- Copyright (c) 2018 Kyle Evans <kevans@FreeBSD.org>
3 -- All rights reserved.
5 -- Redistribution and use in source and binary forms, with or without
6 -- modification, are permitted provided that the following conditions
8 -- 1. Redistributions of source code must retain the above copyright
9 -- notice, this list of conditions and the following disclaimer.
10 -- 2. Redistributions in binary form must reproduce the above copyright
11 -- notice, this list of conditions and the following disclaimer in the
12 -- documentation and/or other materials provided with the distribution.
14 -- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 -- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 -- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 -- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 -- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 -- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 -- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 -- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 -- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 -- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 local config = require("config")
30 local core = require("core")
35 -- Parses arguments to boot and returns two values: kernel_name, argstr
36 -- Defaults to nil and "" respectively.
37 -- This will also parse arguments to autoboot, but the with_kernel argument
38 -- will need to be explicitly overwritten to false
39 local parse_boot_args = function(argv, with_kernel)
40 if with_kernel == nil then
53 for k, v in ipairs(argv) do
54 if with_kernel and v:sub(1,1) ~= "-" then
57 argstr = argstr .. " " .. v
61 return kernel_name, argstr
67 -- Declares a global function cli_execute that attempts to dispatch the
68 -- arguments passed as a lua function. This gives lua a chance to intercept
69 -- builtin CLI commands like "boot"
70 function cli_execute(...)
78 local cmd_name = argv[1]
79 local cmd = cli[cmd_name]
80 if cmd ~= nil and type(cmd) == "function" then
81 -- Pass argv wholesale into cmd. We could omit argv[0] since the
82 -- traditional reasons for including it don't necessarily apply,
83 -- it may not be totally redundant if we want to have one global
84 -- handling multiple commands
94 function cli.boot(...)
95 local cmd_name, argv = cli.arguments(...)
96 local kernel, argstr = parse_boot_args(argv)
98 loader.perform("unload")
99 config.selectkernel(kernel)
104 function cli.autoboot(...)
105 local cmd_name, argv = cli.arguments(...)
106 local argstr = parse_boot_args(argv, false)
107 core.autoboot(argstr)
110 -- Used for splitting cli varargs into cmd_name and the rest of argv
111 function cli.arguments(...)
114 cmd_name, argv = core.popFrontTable(argv)
115 return cmd_name, argv