File::create() does not need to change umask

umask(0) causes all files to be created with 666 permission.
After input from jrbasso and AD7six, this was found to be an
additional code to support caching using file engine.

FileEngine has since moved to SplFile since 2.x and thus umask
juggling is not required anymore.

Refs: f9f1c4d
Cherrypicked from 2.2 branch.

lib/Cake/Test/Case/Utility/FileTest.php

@@ -53,6 +53,9 @@ public function tearDown() {
 		parent::tearDown();
 		$this->File->close();
 		unset($this->File);
+
+		$Folder = new Folder();
+		$Folder->delete(TMP . 'tests' . DS . 'permissions');
 	}
 
 /**
@@ -116,12 +119,52 @@ public function testBasic() {
 
 		$result = $this->File->Folder();
 		$this->assertInstanceOf('Folder', $result);
+	}
 
+/**
+ * testPermission method
+ */
+	public function testPermission() {
 		$this->skipIf(DIRECTORY_SEPARATOR === '\\', 'File permissions tests not supported on Windows.');
 
-		$result = $this->File->perms();
+		$dir = TMP . 'tests' . DS . 'permissions' . DS;
+		$Folder = new Folder($dir);
+
+		$old = umask();
+
+		umask(0002);
+		$file = $dir . 'permission_' . uniqid();
+		$expecting = decoct(0664 & ~umask());
+		$File = new File($file, true);
+		$result = $File->perms();
+		$this->assertEquals($expecting, $result);
+		$File->delete();
+
+		umask(0022);
+		$file = $dir . 'permission_' . uniqid();
 		$expecting = decoct(0644 & ~umask());
+		$File = new File($file, true);
+		$result = $File->perms();
+		$this->assertEquals($expecting, $result);
+		$File->delete();
+
+		umask(0422);
+		$file = $dir . 'permission_' . uniqid();
+		$expecting = decoct(0244 & ~umask());
+		$File = new File($file, true);
+		$result = $File->perms();
 		$this->assertEquals($expecting, $result);
+		$File->delete();
+
+		umask(0444);
+		$file = $dir . 'permission_' . uniqid();
+		$expecting = decoct(0222 & ~umask());
+		$File = new File($file, true);
+		$result = $File->perms();
+		$this->assertEquals($expecting, $result);
+		$File->delete();
+
+		umask($old);
 	}
 
 /**

lib/Cake/Utility/File.php

@@ -110,9 +110,7 @@ public function __destruct() {
 	public function create() {
 		$dir = $this->Folder->pwd();
 		if (is_dir($dir) && is_writable($dir) && !$this->exists()) {
-			$old = umask(0);
 			if (touch($this->path)) {
-				umask($old);
 				return true;
 			}
 		}