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-----------------------------------------------------
-- Licensed under the GNU General Public License v2
-- * (c) 2010, Hagen Schink <troja84@googlemail.com>
-----------------------------------------------------
-- {{{ Grab environment
local io = { open = io.open }
local setmetatable = setmetatable
local string = {
len = string.len,
sub = string.sub,
match = string.match,
gmatch = string.gmatch
}
-- }}}
-- Raid: provides state information for a requested RAID array
-- vicious.widgets.raid
local raid = {}
-- Initialize function tables
local mddev = {}
-- {{{ RAID widget type
local function worker(format, warg)
if not warg then return end
mddev[warg] = {
["found"] = false,
["active"] = 0,
["assigned"] = 0
}
-- Linux manual page: md(4)
local f = io.open("/proc/mdstat")
for line in f:lines() do
if mddev[warg]["found"] then
local updev = string.match(line, "%[[_U]+%]")
for i in string.gmatch(updev, "U") do
mddev[warg]["active"] = mddev[warg]["active"] + 1
end
break
elseif string.sub(line, 1, string.len(warg)) == warg then
mddev[warg]["found"] = true
for i in string.gmatch(line, "%[[%d]%]") do
mddev[warg]["assigned"] = mddev[warg]["assigned"] + 1
end
end
end
f:close()
return {mddev[warg]["assigned"], mddev[warg]["active"]}
end
-- }}}
return setmetatable(raid, { __call = function(_, ...) return worker(...) end })
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