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---------------------------------------------------
-- Licensed under the GNU General Public License v2
-- * (c) 2009, Adrian C. <anrxc@sysphere.org>
---------------------------------------------------
-- {{{ Grab environment
local tonumber = tonumber
local io = { open = io.open }
local setmetatable = setmetatable
local math = { ceil = math.ceil }
-- }}}
-- Entropy: provides available system entropy
module("vicious.entropy")
-- {{{ Entropy widget type
local function worker(format, poolsize)
-- Linux 2.6 has a default entropy pool of 4096-bits
if poolsize == nil then poolsize = 4096 end
-- Get available entropy
local f = io.open("/proc/sys/kernel/random/entropy_avail")
local ent = tonumber(f:read("*line"))
f:close()
-- Calculate percentage
local ent_percent = math.ceil(ent * 100 / poolsize)
return {ent, ent_percent}
end
-- }}}
setmetatable(_M, { __call = function(_, ...) return worker(...) end })
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