From 37736f4dad4e342c729871d2c4faa9c1b0fadd53 Mon Sep 17 00:00:00 2001
From: Rich Trott <rtrott@gmail.com>
Date: Sat, 30 Apr 2016 14:13:00 -0700
Subject: [PATCH] src: add O_NOATIME constant

Add O_NOATIME flag on Linux for use with `fs.open()`.

PR-URL: https://github.com/nodejs/node/pull/6492
Fixes: https://github.com/nodejs/node/issues/2182
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
---
 src/node_constants.cc                           |  4 ++++
 test/parallel/test-process-constants-noatime.js | 11 +++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 test/parallel/test-process-constants-noatime.js

diff --git a/src/node_constants.cc b/src/node_constants.cc
index 87443c95be1b6d..928502f6affca9 100644
--- a/src/node_constants.cc
+++ b/src/node_constants.cc
@@ -1036,6 +1036,10 @@ void DefineSystemConstants(Local<Object> target) {
   NODE_DEFINE_CONSTANT(target, O_EXCL);
 #endif
 
+#ifdef O_NOATIME
+  NODE_DEFINE_CONSTANT(target, O_NOATIME);
+#endif
+
 #ifdef O_NOFOLLOW
   NODE_DEFINE_CONSTANT(target, O_NOFOLLOW);
 #endif
diff --git a/test/parallel/test-process-constants-noatime.js b/test/parallel/test-process-constants-noatime.js
new file mode 100644
index 00000000000000..cf6b98f794157b
--- /dev/null
+++ b/test/parallel/test-process-constants-noatime.js
@@ -0,0 +1,11 @@
+'use strict';
+
+require('../common');
+const assert = require('assert');
+
+const isLinux = process.platform === 'linux';
+
+const O_NOATIME = process.binding('constants').O_NOATIME;
+const expected = isLinux ? 0x40000 : undefined;
+
+assert.strictEqual(O_NOATIME, expected);