OC-PsychOS2/lib/rc.lua

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local serial = require "serialization"
local rc = {}
rc.paths = "/boot/service\n/pkg/service"
rc.pids = {}
local service = {}
local cfg = {}
cfg.enabled = {"getty","minitel"}
local function loadConfig()
local f = io.open("/boot/cfg/rc.cfg","rb")
if not f then return false end
cfg = serial.unserialize(f:read("*a")) or {}
f:close()
cfg.enabled = cfg.enabled or {}
return true
end
local function saveConfig()
local f = io.open("/boot/cfg/rc.cfg","wb")
if not f then return false end
f:write(serial.serialize(cfg))
f:close()
return true
end
function rc.load(name,force) -- string boolean -- table -- Attempts to load service *name*, and if *force* is true, replaces the current instance.
if not package.loaded[name] or force then
for d in rc.paths:gmatch("[^\n]+") do
if fs.exists(d.."/"..name..".lua") then
service[name] = runfile(d.."/"..name..".lua")
end
end
end
if service[name] then
return service[name]
end
return false, "unable to load service "..name
end
--[[
function rc.load(name,force) -- string boolean -- table -- Attempts to load service *name*, and if *force* is true, replaces the current instance.
if force then
rc.stop(name)
service[name] = nil
end
if service[name] then return true end
service[name] = setmetatable({},{__index=_G})
local f
f = io.open("/boot/service/"..name..".lua","rb")
if not f then
pcall(require,"pkgfs")
f = io.open("/pkg/service/"..name..".lua","rb")
end
local res = load(f:read("*a"),name,"t",service[name])()
f:close()
return res
end
]]
function rc.stop(name,...) -- string -- boolean string -- Stops service *name*, supplying *...* to the stop function. Returns false and a reason if this fails.
if not service[name] then return false, "service not found" end
if service[name].stop then
service[name].stop(...)
coroutine.yield()
end
if rc.pids[name] then
os.kill(rc.pids[name])
end
rc.pids[name] = nil
end
function rc.start(name,...) -- string -- boolean string -- Stops service *name*, supplying *...* to the stop function. Returns false and a reason if this fails.
rc.load(name)
if not service[name] then return false, "service not found" end
local rv = {service[name].start(...)}
if type(rv[1]) == "number" then
rc.pids[name] = rv[1]
end
end
function rc.restart(name) -- string -- -- Restarts service *name* using rc.stop and rc.start.
rc.stop(name)
rc.start(name)
end
function rc.enable(name) -- string -- -- Enables service *name* being started on startup.
for k,v in pairs(cfg.enabled) do
if v == name then return false end
end
cfg.enabled[#cfg.enabled+1] = name
saveConfig()
end
function rc.disable(name) -- string -- -- Disables service *name* being started on startup.
local disabled = false
for k,v in pairs(cfg.enabled) do
if v == name then table.remove(cfg.enabled,k) disabled = true break end
end
saveConfig()
return disabled
end
loadConfig()
_G.service = service
rc.cfg = cfg
return rc