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lualoader: Prepare for interception of "boot" CLI cmd

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core.boot and core.autoboot may both take arguments; add a helper to cleanly
append an argstring to the given loader command.

Also provide a popFrontTable() that we'll use pop the command name off of an
argv table. We don't have the table library included, and including it is
non-trivial, so we'll implement this one function that we need in lua for
the time being.
This commit is contained in:
Kyle Evans 2018-02-20 21:23:01 +00:00
parent df9e50a99c
commit 6d4ed94d98
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=329671
1 changed files with 34 additions and 4 deletions
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38
stand/lua/core.lua
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@ -30,6 +30,13 @@ local config = require('config');
local core = {};
local compose_loader_cmd = function(cmd_name, argstr)
if (argstr ~= nil) then
cmd_name = cmd_name .. " " .. argstr;
end
return cmd_name;
end
-- Module exports
-- Commonly appearing constants
core.KEY_BACKSPACE = 8;
@ -182,14 +189,14 @@ function core.setDefaults()
core.setVerbose(false);
end
function core.autoboot()
function core.autoboot(argstr)
config.loadelf();
loader.perform("autoboot");
loader.perform(compose_loader_cmd("autoboot", argstr));
end
function core.boot()
function core.boot(argstr)
config.loadelf();
loader.perform("boot");
loader.perform(compose_loader_cmd("boot", argstr));
end
function core.isSingleUserBoot()
@ -235,6 +242,29 @@ function core.shallowCopyTable(tbl)
return new_tbl;
end
-- XXX This should go away if we get the table lib into shape for importing.
-- As of now, it requires some 'os' functions, so we'll implement this in lua
-- for our uses
function core.popFrontTable(tbl)
-- Shouldn't reasonably happen
if (#tbl == 0) then
return nil, nil;
elseif (#tbl == 1) then
return tbl[1], {};
end
local first_value = tbl[1];
local new_tbl = {};
-- This is not a cheap operation
for k, v in ipairs(tbl) do
if (k > 1) then
new_tbl[k - 1] = v;
end
end
return first_value, new_tbl;
end
-- On i386, hint.acpi.0.rsdp will be set before we're loaded. On !i386, it will
-- generally be set upon execution of the kernel. Because of this, we can't (or
-- don't really want to) detect/disable ACPI on !i386 reliably. Just set it