Add trivial examples of simple mq layer, fix simple mq layer for recent mq changes

1 files changed, 3 insertions, 3 deletions

diff --git a/luxio/mq.lua b/luxio/mq.lua
index 4ba8c65..6e11f8d 100644
--- a/luxio/mq.lua
+++ b/luxio/mq.lua
@@ -101,8 +101,8 @@ local mq_mt = {
    end,
 
    __tostring = function(x)
-      return ("message queue: %s %s (%d)%s"):format(
-	 x.rw_mode, x.path, x.desc, x.closed and " closed" or "")
+      return ("message queue: %s %s (%s)%s"):format(
+	 x.rw_mode, x.path, tostring(x.desc), x.closed and " closed" or "")
    end,
 
    __gc = mq_meta_gc
@@ -155,7 +155,7 @@ local function open(path, rw, mode)
       mq, errno = l.mq_open(path, rw_mode)
    end
 
-   if mq < 0 then
+   if type(mq) == "number" and mq == -1 then
       return err("mq_open", errno)
    end