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Diffstat (limited to 'widgets/entropy.lua')
-rw-r--r-- | widgets/entropy.lua | 33 |
1 files changed, 33 insertions, 0 deletions
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. <anrxc@sysphere.org> +--------------------------------------------------- + +-- {{{ 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 }) |