265 lines
8.0 KiB
Plaintext
265 lines
8.0 KiB
Plaintext
--:Minify:--
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local kernel = ...
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local proxy = {}
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local data = {}
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proxy.address = "procfs0000"
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proxy.isvirt = true
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proxy.isReadOnly = function() return false end
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proxy.spaceUsed = function() return 0 end
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proxy.spaceTotal = function() return 0 end
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proxy.makeDirectory = function() error("EACCES") end
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proxy.remove = function() error("EACCES") end
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proxy.setLabel = function() error("EACCES") end
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proxy.getLabel = function() return "procfs" end
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proxy.attributes = function(path) return {
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size = 0,
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modified = 0,
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created = 0
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} end
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local function buildMeta(entries, opts)
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opts = opts or {}
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local uid = opts.uid or 0
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local gid = opts.gid or 0
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local perms = opts.perms or 0x3F -- default read/write for owner/group/world
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local chunks = {}
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table.insert(chunks, string.char(0x02)) -- version header
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for path, target in pairs(entries) do
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local name = path
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local nameLen = #name
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if nameLen > 255 then
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error("Filename too long (>255 bytes): "..name)
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end
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-- Determine entry type: 0x01 = symlink if target ~= nil and target ~= ""
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local entryType = 0x00
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local cmeta = ""
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if target and target ~= "" then
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entryType = 0x01
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cmeta = target
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end
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local cmetaLen = #cmeta
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if cmetaLen > 255 then
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error("cmeta too long (>255 bytes) for "..name)
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end
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-- Build entry as bytes
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table.insert(chunks, string.char(nameLen)) -- name length
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table.insert(chunks, name) -- name
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table.insert(chunks, string.char(entryType)) -- entry type
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table.insert(chunks, string.char(uid % 256, math.floor(uid/256) % 256)) -- uid
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table.insert(chunks, string.char(gid % 256, math.floor(gid/256) % 256)) -- gid
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table.insert(chunks, string.char(perms % 256, math.floor(perms/256) % 256)) -- perms
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table.insert(chunks, string.char(cmetaLen)) -- cmeta length
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if cmetaLen > 0 then
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table.insert(chunks, cmeta)
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end
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end
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return table.concat(chunks)
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end
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local function simpleFile(r,w)
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return function(op, mode)
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if op=="type" then
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return "character device"
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elseif op=="open" then
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if mode=="r" then
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return {
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read=r
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}
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elseif mode=="w" then
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return {
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write=w
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}
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end
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end
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end
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end
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local function strFile(str)
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local dat=tostring(str)
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local pos=1
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return simpleFile(function(amount)
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pos=pos+amount
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return dat:sub(pos-amount, pos)
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end,function() error("EACCES") end)
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end
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local function newtaskproxy(task)
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local files,siblings,children={},{},{}
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if task.fd[0] then files["0"]=task.fd[0].path end
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for i,v in ipairs(task.fd) do
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files[tostring(i)]=tostring(v.path)
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end
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for i,v in ipairs(task.siblings) do
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siblings[tostring(v.pid)]="/proc/"..tostring(v.pid)
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end
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for i,v in ipairs(task.children) do
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children[tostring(v.pid)]="/proc/"..tostring(v.pid)
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end
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return {
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[".meta"]=strFile(buildMeta({cwd=task.cwd,parent="/proc/"..tostring(task.parent.pid)})),
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uid=strFile(task.uid),
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comm=strFile(task.name),
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fd={
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[".meta"]=strFile(buildMeta(files))
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},
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siblings={
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[".meta"]=strFile(buildMeta(siblings))
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},
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children={
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[".meta"]=strFile(buildMeta(children))
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}
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}
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end
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function proxy:open(path, mode)
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local steps = kernel.vfs.splitPath(path)
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local step = data
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if tonumber(steps[1]) then
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local task=kernel.tasks[tostring(steps[1])]
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local step = newtaskproxy(task)
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for i=2, #steps-1 do
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local dat = step[steps[i]]
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if type(dat) ~= "table" then error("ENFILE") end
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step=dat
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end
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if type(step[steps[#steps]]) == "function" then
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return step[steps[#steps]]("open", mode)
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end
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elseif tostring(steps[1])=="self" then
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local task=kernel.currentTask
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local step = newtaskproxy(task)
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for i=2, #steps-1 do
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local dat = step[steps[i]]
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if type(dat) ~= "table" then error("ENFILE") end
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step=dat
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end
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if type(step[steps[#steps]]) == "function" then
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return step[steps[#steps]]("open", mode)
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end
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else
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for i=1, #steps-1 do
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local dat = step[steps[i]]
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if type(dat) ~= "table" then error("ENFILE") end
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step=dat
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end
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if type(step[steps[#steps]]) == "function" then
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return step[steps[#steps]]("open", mode)
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end
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end
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error("ENFILE")
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end
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function proxy:type(path, mode)
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local steps = kernel.vfs.splitPath(path)
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local step = data
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if #steps == 0 then
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return "directory"
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end
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if tonumber(steps[1]) then
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local task=kernel.tasks[steps[1]]
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if #steps==1 then return "directory" end
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local step = newtaskproxy(task)
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for i=2, #steps-1 do
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local dat = step[steps[i]]
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if type(dat) ~= "table" then error("ENFILE") end
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step=dat
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end
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if type(step[steps[#steps]]) == "function" then
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return step[steps[#steps]]("type", mode)
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end
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if type(step[steps[#steps]]) == "table" then
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return "directory"
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end
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elseif tostring(steps[1])=="self" then
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local task=kernel.currentTask
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if #steps==1 then return "directory" end
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local step = newtaskproxy(task)
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for i=2, #steps-1 do
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local dat = step[steps[i]]
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if type(dat) ~= "table" then error("ENFILE") end
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step=dat
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end
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if type(step[steps[#steps]]) == "function" then
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return step[steps[#steps]]("type", mode)
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end
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if type(step[steps[#steps]]) == "table" then
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return "directory"
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end
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else
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for i=1, #steps-1 do
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local dat = step[steps[i]]
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if type(dat) ~= "table" then error("ENFILE") end
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step=dat
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end
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if type(step[steps[#steps]]) == "function" then
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return step[steps[#steps]]("type", mode)
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end
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if type(step[steps[#steps]]) == "table" then
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return "directory"
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end
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end
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error("ENOENT")
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end
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function proxy:list(path)
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local steps = kernel.vfs.splitPath(path)
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local step = data
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if #steps == 0 then
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return table.merge(table.keys(data),table.keys(kernel.tasks),{"self"})
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end
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if tonumber(steps[1]) then
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local task=kernel.tasks[steps[1]]
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local step = newtaskproxy(task)
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if #steps==1 then return table.keys(step) end
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for i=2, #steps-1 do
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local dat = step[steps[i]]
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if type(dat) ~= "table" then error("ENOENT") end
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step=dat
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end
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if type(step[steps[#steps]]) == "table" then
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return table.keys(step[steps[#steps]])
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end
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elseif tostring(steps[1])=="self" then
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local task=kernel.currentTask
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local step = newtaskproxy(task)
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if #steps==1 then return table.keys(step) end
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for i=2, #steps-1 do
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local dat = step[steps[i]]
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if type(dat) ~= "table" then error("ENOENT") end
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step=dat
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end
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if type(step[steps[#steps]]) == "table" then
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return table.keys(step[steps[#steps]])
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end
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else
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for i=1, #steps-1 do
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local dat = step[steps[i]]
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if type(dat) ~= "table" then error("ENOENT") end
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step=dat
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end
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if type(step[steps[#steps]]) == "table" then
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return table.keys(step[steps[#steps]])
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end
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end
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error("ENOENT")
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end
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function proxy:fileExists(path)
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local ok = pcall(function()
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return self:type(path)
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end)
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return ok
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end
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data.uptime=simpleFile(function()return tostring(kernel.EFI:getUptime())end,function()error("EACCES")end)
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kernel.procfs={}
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kernel.procfs.data=data
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kernel.procfs.proxy=proxy
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kernel.disks["procfs0000"]=proxy |