From 1ac4fc9dd15ebbeec2adf0229ee70c90f5362829 Mon Sep 17 00:00:00 2001
From: ruki <waruqi@gmail.com>
Date: Sat, 21 Dec 2019 00:38:20 +0800
Subject: improve os.tmpdir

---
 xmake/core/base/os.lua | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/xmake/core/base/os.lua b/xmake/core/base/os.lua
index 4a31db46c..cc2da0478 100644
--- a/xmake/core/base/os.lua
+++ b/xmake/core/base/os.lua
@@ -141,7 +141,10 @@ function os._ramdir()
     end
     if ramdir_root == nil then
         if os.host() == "linux" and os.isdir("/dev/shm") then
-            ramdir_root = "/dev/shm"
+            if io.writefile("/dev/shm/.xmake_test", "test") then
+                ramdir_root = "/dev/shm"
+                os.rm("/dev/shm/.xmake_test")
+            end
         elseif os.host() == "macosx" and os.isdir("/Volumes/RAM") then
             -- @note we need the user to execute the command to create it.
             -- diskutil partitionDisk `hdiutil attach -nomount ram://8388608` GPT APFS "RAM" 0
-- 
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