5c1b516581
[Enter] should be moved to the single user menu item when we swap them. Define a non-standard menu entry function "alternate_name" to use for this purpose for ultimate flexibility if we change our minds later. When we're booting single user, make a shallow copy of the menu that we'd normally display and swap the items and their name functions to use alternate_name instead. Toggling single user in the options menu and going back to the main menu will now correctly reflect the current boot setting with the first two menu options and "[Enter]" will always be on the right one. This shallow copy technique has the chance of being quite slow since it's done on every redraw, but in my testing it does not seem to make any obvious difference. shallowCopyTable could likely belong better in a general-purpose utility module, but this (and the key constnats) are the only candidates we have at the moment so we'll drop it into our core stuff for the moment and consider re-organization at a later date.
235 lines
5.6 KiB
Lua
235 lines
5.6 KiB
Lua
--
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-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
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-- All rights reserved.
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--
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-- Redistribution and use in source and binary forms, with or without
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-- modification, are permitted provided that the following conditions
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-- are met:
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-- 1. Redistributions of source code must retain the above copyright
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-- notice, this list of conditions and the following disclaimer.
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-- 2. Redistributions in binary form must reproduce the above copyright
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-- notice, this list of conditions and the following disclaimer in the
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-- documentation and/or other materials provided with the distribution.
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--
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-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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-- SUCH DAMAGE.
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--
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-- $FreeBSD$
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--
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local config = require('config');
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local core = {};
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-- Commonly appearing constants
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core.KEY_BACKSPACE = 8;
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core.KEY_ENTER = 13;
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core.KEY_DELETE = 127;
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core.KEYSTR_ESCAPE = "\027";
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core.MENU_RETURN = "return";
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core.MENU_ENTRY = "entry";
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core.MENU_SEPARATOR = "separator";
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core.MENU_SUBMENU = "submenu";
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core.MENU_CAROUSEL_ENTRY = "carousel_entry";
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function core.setVerbose(b)
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if (b == nil) then
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b = not core.verbose;
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end
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if (b == true) then
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loader.setenv("boot_verbose", "YES");
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else
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loader.unsetenv("boot_verbose");
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end
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core.verbose = b;
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end
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function core.setSingleUser(b)
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if (b == nil) then
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b = not core.su;
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end
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if (b == true) then
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loader.setenv("boot_single", "YES");
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else
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loader.unsetenv("boot_single");
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end
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core.su = b;
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end
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function core.getACPIPresent(checkingSystemDefaults)
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local c = loader.getenv("hint.acpi.0.rsdp");
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if (c ~= nil) then
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if (checkingSystemDefaults == true) then
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return true;
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end
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-- Otherwise, respect disabled if it's set
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c = loader.getenv("hint.acpi.0.disabled");
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return (c == nil) or (tonumber(c) ~= 1);
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end
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return false;
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end
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function core.setACPI(b)
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if (b == nil) then
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b = not core.acpi;
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end
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if (b == true) then
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loader.setenv("acpi_load", "YES");
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loader.setenv("hint.acpi.0.disabled", "0");
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loader.unsetenv("loader.acpi_disabled_by_user");
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else
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loader.unsetenv("acpi_load");
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loader.setenv("hint.acpi.0.disabled", "1");
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loader.setenv("loader.acpi_disabled_by_user", "1");
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end
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core.acpi = b;
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end
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function core.setSafeMode(b)
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if (b == nil) then
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b = not core.sm;
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end
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if (b == true) then
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loader.setenv("kern.smp.disabled", "1");
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loader.setenv("hw.ata.ata_dma", "0");
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loader.setenv("hw.ata.atapi_dma", "0");
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loader.setenv("hw.ata.wc", "0");
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loader.setenv("hw.eisa_slots", "0");
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loader.setenv("kern.eventtimer.periodic", "1");
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loader.setenv("kern.geom.part.check_integrity", "0");
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else
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loader.unsetenv("kern.smp.disabled");
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loader.unsetenv("hw.ata.ata_dma");
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loader.unsetenv("hw.ata.atapi_dma");
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loader.unsetenv("hw.ata.wc");
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loader.unsetenv("hw.eisa_slots");
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loader.unsetenv("kern.eventtimer.periodic");
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loader.unsetenv("kern.geom.part.check_integrity");
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end
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core.sm = b;
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end
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function core.kernelList()
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local k = loader.getenv("kernel");
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local v = loader.getenv("kernels") or "";
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local kernels = {};
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local unique = {};
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local i = 0;
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if (k ~= nil) then
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i = i + 1;
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kernels[i] = k;
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unique[k] = true;
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end
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for n in v:gmatch("([^; ]+)[; ]?") do
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if (unique[n] == nil) then
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i = i + 1;
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kernels[i] = n;
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unique[n] = true;
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end
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end
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-- Automatically detect other bootable kernel directories using a
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-- heuristic. Any directory in /boot that contains an ordinary file
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-- named "kernel" is considered eligible.
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for file in lfs.dir("/boot") do
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local fname = "/boot/" .. file;
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if (file == "." or file == "..") then
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goto continue;
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end
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if (lfs.attributes(fname, "mode") ~= "directory") then
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goto continue;
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end
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if (lfs.attributes(fname .. "/kernel", "mode") ~= "file") then
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goto continue;
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end
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if (unique[file] == nil) then
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i = i + 1;
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kernels[i] = file;
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unique[file] = true;
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end
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::continue::
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end
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return kernels;
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end
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function core.setDefaults()
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core.setACPI(core.getACPIPresent(true));
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core.setSafeMode(false);
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core.setSingleUser(false);
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core.setVerbose(false);
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end
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function core.autoboot()
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config.loadelf();
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loader.perform("autoboot");
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end
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function core.boot()
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config.loadelf();
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loader.perform("boot");
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end
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function core.isSingleUserBoot()
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local single_user = loader.getenv("boot_single");
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return single_user ~= nil and single_user:lower() == "yes";
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end
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function core.isSerialBoot()
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local c = loader.getenv("console");
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if (c ~= nil) then
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if (c:find("comconsole") ~= nil) then
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return true;
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end
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end
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local s = loader.getenv("boot_serial");
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if (s ~= nil) then
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return true;
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end
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local m = loader.getenv("boot_multicons");
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if (m ~= nil) then
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return true;
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end
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return false;
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end
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-- This may be a better candidate for a 'utility' module.
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function core.shallowCopyTable(tbl)
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local new_tbl = {};
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for k, v in pairs(tbl) do
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if (type(v) == "table") then
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new_tbl[k] = core.shallowCopyTable(v);
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else
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new_tbl[k] = v;
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end
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end
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return new_tbl;
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end
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core.setACPI(core.getACPIPresent(false));
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return core;
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