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OC-Minitel/MTFS/OpenOS/usr/bin/importfs.lua

68 lines
1.4 KiB
Lua

local computer = require "computer"
local fs = require "filesystem"
local rpc = require "rpc"
local tA = {...}
local rpath, lpath = tA[1], tA[2], tA[3]
if #tA < 2 then
print("Usage: importfs <remote path> <local path>")
return
end
local function parsePath(path)
return path:match("(.+):(.+)")
end
local host, saddr = parsePath(rpath)
local px = rpc.proxy(host,"fs_"..saddr.."_")
local mc = 0
for k,v in pairs(px) do
mc = mc + 1
end
if mc < 1 then
error("no such remote filesystem: "..rpath)
end
local statcache = {}
px.address = rpath
if px.dirstat then -- use single call for file info
function px.list(path)
local t,e = px.dirstat(path)
if not t then return nil,e end
local rt = {}
for k,v in pairs(t) do
rt[#rt+1] = k
statcache[fs.canonical("/"..path.."/"..k)] = {computer.uptime(),v[1],v[2],v[3]}
end
return rt
end
local oid, osize, olm = px.isDirectory, px.size, px.lastModified
local function gce(p,n)
for k,v in pairs(statcache) do
if computer.uptime() > v[1] + 1 then
statcache[k] = nil
end
end
local ci = statcache["/"..fs.canonical(p)]
if ci then
return ci[n]
end
end
function px.isDirectory(path)
return gce(path, 2) or oid(path)
end
function px.size(path)
return gce(path, 3) or osize(path)
end
function px.lastModified(path)
return gce(path, 4) or olm(path)
end
end
local iro,e = px.isReadOnly()
if not iro then
error(e)
end
function px.isReadOnly()
return iro
end
fs.mount(px, lpath)