From 237470c8f45190b213e3a173ce6ae1a74b3e11fe Mon Sep 17 00:00:00 2001 From: "Adrian C. (anrxc)" Date: Sun, 14 Mar 2010 01:55:33 +0100 Subject: API: transform widgets namespace table to a directory --- widgets/entropy.lua | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 widgets/entropy.lua (limited to 'widgets/entropy.lua') diff --git a/widgets/entropy.lua b/widgets/entropy.lua new file mode 100644 index 0000000..395d5d9 --- /dev/null +++ b/widgets/entropy.lua @@ -0,0 +1,33 @@ +--------------------------------------------------- +-- Licensed under the GNU General Public License v2 +-- * (c) 2010, Adrian C. +--------------------------------------------------- + +-- {{{ Grab environment +local tonumber = tonumber +local setmetatable = setmetatable +local math = { ceil = math.ceil } +local helpers = require("vicious.helpers") +-- }}} + + +-- Entropy: provides available system entropy +module("vicious.widgets.entropy") + + +-- {{{ Entropy widget type +local function worker(format) + local random = helpers.pathtotable("/proc/sys/kernel/random") + + -- Linux 2.6 has a default entropy pool of 4096-bits + local poolsize = tonumber(random.poolsize) + -- Get available entropy + local ent = tonumber(random.entropy_avail) + -- Calculate percentage + local ent_percent = math.ceil(ent * 100 / poolsize) + + return {ent, ent_percent} +end +-- }}} + +setmetatable(_M, { __call = function(_, ...) return worker(...) end }) -- cgit v1.2.3