freebsd-dev/stand/lua/menu.lua

460 lines
12 KiB
Lua

--
-- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
--
-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
-- Copyright (C) 2018 Kyle Evans <kevans@FreeBSD.org>
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
-- 1. Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
-- 2. Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
--
-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-- SUCH DAMAGE.
--
-- $FreeBSD$
--
local core = require("core")
local color = require("color")
local config = require("config")
local screen = require("screen")
local drawer = require("drawer")
local menu = {}
local drawn_menu
local return_menu_entry = {
entry_type = core.MENU_RETURN,
name = "Back to main menu" .. color.highlight(" [Backspace]"),
}
local function OnOff(str, value)
if value then
return str .. color.escapef(color.GREEN) .. "On" ..
color.escapef(color.WHITE)
else
return str .. color.escapef(color.RED) .. "off" ..
color.escapef(color.WHITE)
end
end
local function bootenvSet(env)
loader.setenv("vfs.root.mountfrom", env)
loader.setenv("currdev", env .. ":")
config.reload()
end
-- Module exports
menu.handlers = {
-- Menu handlers take the current menu and selected entry as parameters,
-- and should return a boolean indicating whether execution should
-- continue or not. The return value may be omitted if this entry should
-- have no bearing on whether we continue or not, indicating that we
-- should just continue after execution.
[core.MENU_ENTRY] = function(_, entry)
-- run function
entry.func()
end,
[core.MENU_CAROUSEL_ENTRY] = function(_, entry)
-- carousel (rotating) functionality
local carid = entry.carousel_id
local caridx = config.getCarouselIndex(carid)
local choices = entry.items
if type(choices) == "function" then
choices = choices()
end
if #choices > 0 then
caridx = (caridx % #choices) + 1
config.setCarouselIndex(carid, caridx)
entry.func(caridx, choices[caridx], choices)
end
end,
[core.MENU_SUBMENU] = function(_, entry)
menu.process(entry.submenu)
end,
[core.MENU_RETURN] = function(_, entry)
-- allow entry to have a function/side effect
if entry.func ~= nil then
entry.func()
end
return false
end,
}
-- loader menu tree is rooted at menu.welcome
menu.boot_environments = {
entries = {
-- return to welcome menu
return_menu_entry,
{
entry_type = core.MENU_CAROUSEL_ENTRY,
carousel_id = "be_active",
items = core.bootenvList,
name = function(idx, choice, all_choices)
if #all_choices == 0 then
return "Active: "
end
local is_default = (idx == 1)
local bootenv_name = ""
local name_color
if is_default then
name_color = color.escapef(color.GREEN)
else
name_color = color.escapef(color.BLUE)
end
bootenv_name = bootenv_name .. name_color ..
choice .. color.default()
return color.highlight("A").."ctive: " ..
bootenv_name .. " (" .. idx .. " of " ..
#all_choices .. ")"
end,
func = function(_, choice, _)
bootenvSet(choice)
end,
alias = {"a", "A"},
},
{
entry_type = core.MENU_ENTRY,
name = function()
return color.highlight("b") .. "ootfs: " ..
core.bootenvDefault()
end,
func = function()
-- Reset active boot environment to the default
config.setCarouselIndex("be_active", 1)
bootenvSet(core.bootenvDefault())
end,
alias = {"b", "B"},
},
},
}
menu.boot_options = {
entries = {
-- return to welcome menu
return_menu_entry,
-- load defaults
{
entry_type = core.MENU_ENTRY,
name = "Load System " .. color.highlight("D") ..
"efaults",
func = core.setDefaults,
alias = {"d", "D"},
},
{
entry_type = core.MENU_SEPARATOR,
},
{
entry_type = core.MENU_SEPARATOR,
name = "Boot Options:",
},
-- acpi
{
entry_type = core.MENU_ENTRY,
visible = core.isSystem386,
name = function()
return OnOff(color.highlight("A") ..
"CPI :", core.acpi)
end,
func = core.setACPI,
alias = {"a", "A"},
},
-- safe mode
{
entry_type = core.MENU_ENTRY,
name = function()
return OnOff("Safe " .. color.highlight("M") ..
"ode :", core.sm)
end,
func = core.setSafeMode,
alias = {"m", "M"},
},
-- single user
{
entry_type = core.MENU_ENTRY,
name = function()
return OnOff(color.highlight("S") ..
"ingle user:", core.su)
end,
func = core.setSingleUser,
alias = {"s", "S"},
},
-- verbose boot
{
entry_type = core.MENU_ENTRY,
name = function()
return OnOff(color.highlight("V") ..
"erbose :", core.verbose)
end,
func = core.setVerbose,
alias = {"v", "V"},
},
},
}
menu.welcome = {
entries = function()
local menu_entries = menu.welcome.all_entries
-- Swap the first two menu items on single user boot
if core.isSingleUserBoot() then
-- We'll cache the swapped menu, for performance
if menu.welcome.swapped_menu ~= nil then
return menu.welcome.swapped_menu
end
-- Shallow copy the table
menu_entries = core.deepCopyTable(menu_entries)
-- Swap the first two menu entries
menu_entries[1], menu_entries[2] =
menu_entries[2], menu_entries[1]
-- Then set their names to their alternate names
menu_entries[1].name, menu_entries[2].name =
menu_entries[1].alternate_name,
menu_entries[2].alternate_name
menu.welcome.swapped_menu = menu_entries
end
return menu_entries
end,
all_entries = {
-- boot multi user
{
entry_type = core.MENU_ENTRY,
name = color.highlight("B") .. "oot Multi user " ..
color.highlight("[Enter]"),
-- Not a standard menu entry function!
alternate_name = color.highlight("B") ..
"oot Multi user",
func = function()
core.setSingleUser(false)
core.boot()
end,
alias = {"b", "B"},
},
-- boot single user
{
entry_type = core.MENU_ENTRY,
name = "Boot " .. color.highlight("S") .. "ingle user",
-- Not a standard menu entry function!
alternate_name = "Boot " .. color.highlight("S") ..
"ingle user " .. color.highlight("[Enter]"),
func = function()
core.setSingleUser(true)
core.boot()
end,
alias = {"s", "S"},
},
-- escape to interpreter
{
entry_type = core.MENU_RETURN,
name = color.highlight("Esc") .. "ape to loader prompt",
func = function()
loader.setenv("autoboot_delay", "NO")
end,
alias = {core.KEYSTR_ESCAPE},
},
-- reboot
{
entry_type = core.MENU_ENTRY,
name = color.highlight("R") .. "eboot",
func = function()
loader.perform("reboot")
end,
alias = {"r", "R"},
},
{
entry_type = core.MENU_SEPARATOR,
},
{
entry_type = core.MENU_SEPARATOR,
name = "Options:",
},
-- kernel options
{
entry_type = core.MENU_CAROUSEL_ENTRY,
carousel_id = "kernel",
items = core.kernelList,
name = function(idx, choice, all_choices)
if #all_choices == 0 then
return "Kernel: "
end
local is_default = (idx == 1)
local kernel_name = ""
local name_color
if is_default then
name_color = color.escapef(color.GREEN)
kernel_name = "default/"
else
name_color = color.escapef(color.BLUE)
end
kernel_name = kernel_name .. name_color ..
choice .. color.default()
return color.highlight("K") .. "ernel: " ..
kernel_name .. " (" .. idx .. " of " ..
#all_choices .. ")"
end,
func = function(_, choice, _)
config.selectKernel(choice)
end,
alias = {"k", "K"},
},
-- boot options
{
entry_type = core.MENU_SUBMENU,
name = "Boot " .. color.highlight("O") .. "ptions",
submenu = menu.boot_options,
alias = {"o", "O"},
},
-- boot environments
{
entry_type = core.MENU_SUBMENU,
visible = function()
return core.isZFSBoot() and
#core.bootenvList() > 1
end,
name = "Boot " .. color.highlight("E") .. "nvironments",
submenu = menu.boot_environments,
alias = {"e", "E"},
},
},
}
menu.default = menu.welcome
-- current_alias_table will be used to keep our alias table consistent across
-- screen redraws, instead of relying on whatever triggered the redraw to update
-- the local alias_table in menu.process.
menu.current_alias_table = {}
function menu.draw(menudef)
-- Clear the screen, reset the cursor, then draw
screen.clear()
menu.current_alias_table = drawer.drawscreen(menudef)
drawn_menu = menudef
screen.defcursor()
end
-- 'keypress' allows the caller to indicate that a key has been pressed that we
-- should process as our initial input.
function menu.process(menudef, keypress)
assert(menudef ~= nil)
if drawn_menu ~= menudef then
menu.draw(menudef)
end
while true do
local key = keypress or io.getchar()
keypress = nil
-- Special key behaviors
if (key == core.KEY_BACKSPACE or key == core.KEY_DELETE) and
menudef ~= menu.default then
break
elseif key == core.KEY_ENTER then
core.boot()
-- Should not return
end
key = string.char(key)
-- check to see if key is an alias
local sel_entry = nil
for k, v in pairs(menu.current_alias_table) do
if key == k then
sel_entry = v
break
end
end
-- if we have an alias do the assigned action:
if sel_entry ~= nil then
local handler = menu.handlers[sel_entry.entry_type]
assert(handler ~= nil)
-- The handler's return value indicates if we
-- need to exit this menu. An omitted or true
-- return value means to continue.
if handler(menudef, sel_entry) == false then
return
end
-- If we got an alias key the screen is out of date...
-- redraw it.
menu.draw(menudef)
end
end
end
function menu.run()
menu.draw(menu.default)
local autoboot_key = menu.autoboot()
menu.process(menu.default, autoboot_key)
drawn_menu = nil
screen.defcursor()
print("Exiting menu!")
end
function menu.autoboot()
local ab = loader.getenv("autoboot_delay")
if ab ~= nil and ab:lower() == "no" then
return nil
elseif tonumber(ab) == -1 then
core.boot()
end
ab = tonumber(ab) or 10
local x = loader.getenv("loader_menu_timeout_x") or 4
local y = loader.getenv("loader_menu_timeout_y") or 23
local endtime = loader.time() + ab
local time
local last
repeat
time = endtime - loader.time()
if last == nil or last ~= time then
last = time
screen.setcursor(x, y)
print("Autoboot in " .. time ..
" seconds, hit [Enter] to boot" ..
" or any other key to stop ")
screen.defcursor()
end
if io.ischar() then
local ch = io.getchar()
if ch == core.KEY_ENTER then
break
else
-- erase autoboot msg
screen.setcursor(0, y)
print(string.rep(" ", 80))
screen.defcursor()
return ch
end
end
loader.delay(50000)
until time <= 0
local cmd = loader.getenv("menu_timeout_command") or "boot"
cli_execute_unparsed(cmd)
end
return menu