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