+
+--- Determines the overlay root used by opkg.
+-- @return String containing the directory path of the overlay root.
+function overlay_root()
+ local od = "/"
+ local fd = io.open(icfg, "r")
+
+ if fd then
+ local ln
+
+ repeat
+ ln = fd:read("*l")
+ if ln and ln:match("^%s*option%s+overlay_root%s+") then
+ od = ln:match("^%s*option%s+overlay_root%s+(%S+)")
+
+ local s = fs.stat(od)
+ if not s or s.type ~= "dir" then
+ od = "/"
+ end
+
+ break
+ end
+ until not ln
+
+ fd:close()
+ end
+
+ return od
+end