From cfc0d9249bf53449dc8daed9c9811dc78fe7086c Mon Sep 17 00:00:00 2001
From: Boris Rybalkin <ribalkin@gmail.com>
Date: Thu, 29 Sep 2016 10:10:35 +0100
Subject: [PATCH 1/3] fixing php 32 bit (arm) filemtime on large file issue
 (#18971) (#25428)

* fixing php 32 bit (arm) filemtime on large file issue (#18971)

* cast to int
---
 lib/private/Files/Storage/Local.php | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/lib/private/Files/Storage/Local.php b/lib/private/Files/Storage/Local.php
index 0d63fd46ecca8..9720162164505 100644
--- a/lib/private/Files/Storage/Local.php
+++ b/lib/private/Files/Storage/Local.php
@@ -173,8 +173,15 @@ public function file_exists($path) {
 	}
 
 	public function filemtime($path) {
-		clearstatcache($this->getSourcePath($path));
-		return $this->file_exists($path) ? filemtime($this->getSourcePath($path)) : false;
+		$fullPath = $this->getSourcePath($path);
+		clearstatcache($fullPath);
+		if (!$this->file_exists($path)) {
+			return false;
+		}
+		if (PHP_INT_SIZE === 4) {
+			return (int) exec ('stat -c %Y '. escapeshellarg ($fullPath));
+		}
+		return filemtime($fullPath);
 	}
 
 	public function touch($path, $mtime = null) {

From 459477e2c3981d28605f6cb304afedd8ec6f5a3b Mon Sep 17 00:00:00 2001
From: Lukas Reschke <lukas@statuscode.ch>
Date: Tue, 25 Oct 2016 11:42:16 +0200
Subject: [PATCH 2/3] Move function to LargeFileHelper

Signed-off-by: Lukas Reschke <lukas@statuscode.ch>
---
 lib/private/Files/Storage/Local.php |  3 ++-
 lib/private/LargeFileHelper.php     | 14 ++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/lib/private/Files/Storage/Local.php b/lib/private/Files/Storage/Local.php
index 9720162164505..294e3d0a34cd2 100644
--- a/lib/private/Files/Storage/Local.php
+++ b/lib/private/Files/Storage/Local.php
@@ -179,7 +179,8 @@ public function filemtime($path) {
 			return false;
 		}
 		if (PHP_INT_SIZE === 4) {
-			return (int) exec ('stat -c %Y '. escapeshellarg ($fullPath));
+			$helper = new \OC\LargeFileHelper();
+			return $helper->getFileMtime($fullPath);
 		}
 		return filemtime($fullPath);
 	}
diff --git a/lib/private/LargeFileHelper.php b/lib/private/LargeFileHelper.php
index 9d0fe864033b5..b75cdcc210eee 100644
--- a/lib/private/LargeFileHelper.php
+++ b/lib/private/LargeFileHelper.php
@@ -187,6 +187,20 @@ public function getFileSizeNative($filename) {
 		return $result;
 	}
 
+	/**
+	 * Returns the current mtime for $fullPath
+	 *
+	 * @param string $fullPath
+	 * @return int
+	 */
+	public function getFileMtime($fullPath) {
+		if (\OC_Helper::is_function_enabled('exec')) {
+			return $this->exec('stat -c %Y ' . escapeshellarg($fullPath));
+		}
+
+		return filemtime($fullPath);
+	}
+
 	protected function exec($cmd) {
 		$result = trim(exec($cmd));
 		return ctype_digit($result) ? 0 + $result : null;

From 62bb991050b20b443f8f11cf04e0a331648d2519 Mon Sep 17 00:00:00 2001
From: Lukas Reschke <lukas@statuscode.ch>
Date: Tue, 25 Oct 2016 12:01:03 +0200
Subject: [PATCH 3/3] Add check for linux os

Signed-off-by: Lukas Reschke <lukas@statuscode.ch>
---
 lib/private/LargeFileHelper.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/private/LargeFileHelper.php b/lib/private/LargeFileHelper.php
index b75cdcc210eee..258e53acf9d67 100644
--- a/lib/private/LargeFileHelper.php
+++ b/lib/private/LargeFileHelper.php
@@ -1,6 +1,7 @@
 <?php
 /**
  * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @copyright Copyright (c) 2016, Lukas Reschke <lukas@statuscode.ch>
  *
  * @author Andreas Fischer <bantu@owncloud.com>
  * @author Lukas Reschke <lukas@statuscode.ch>
@@ -195,7 +196,10 @@ public function getFileSizeNative($filename) {
 	 */
 	public function getFileMtime($fullPath) {
 		if (\OC_Helper::is_function_enabled('exec')) {
-			return $this->exec('stat -c %Y ' . escapeshellarg($fullPath));
+			$os = strtolower(php_uname('s'));
+			if (strpos($os, 'linux') !== false) {
+				return $this->exec('stat -c %Y ' . escapeshellarg($fullPath));
+			}
 		}
 
 		return filemtime($fullPath);