Merge pull request #17635 from lutherjm/pr/41378853-swift-4.2-branch

Pr/41378853 swift 4.2 branch

Author: parkera

stdlib/public/SDK/Foundation/URL.swift

@@ -412,6 +412,26 @@ public struct URLResourceValues {
     @available(macOS 10.12, iOS 10.0, tvOS 10.0, watchOS 3.0, *)
     public var volumeSupportsCompression : Bool? { return _get(.volumeSupportsCompressionKey) }
 
+    /// true if the volume supports clonefile(2).
+    @available(macOS 10.12, iOS 10.0, tvOS 10.0, watchOS 3.0, *)
+    public var volumeSupportsFileCloning : Bool? { return _get(.volumeSupportsFileCloningKey) }
+    
+    /// true if the volume supports renamex_np(2)'s RENAME_SWAP option.
+    @available(macOS 10.12, iOS 10.0, tvOS 10.0, watchOS 3.0, *)
+    public var volumeSupportsSwapRenaming : Bool? { return _get(.volumeSupportsSwapRenamingKey) }
+    
+    /// true if the volume supports renamex_np(2)'s RENAME_EXCL option.
+    @available(macOS 10.12, iOS 10.0, tvOS 10.0, watchOS 3.0, *)
+    public var volumeSupportsExclusiveRenaming : Bool? { return _get(.volumeSupportsExclusiveRenamingKey) }
+    
+    /// true if the volume supports making files immutable with isUserImmutable or isSystemImmutable.
+    @available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4.0, *)
+    public var volumeSupportsImmutableFiles : Bool? { return _get(.volumeSupportsImmutableFilesKey) }
+    
+    /// true if the volume supports setting POSIX access permissions with fileSecurity.
+    @available(macOS 10.13, iOS 11.0, tvOS 11.0, watchOS 4.0, *)
+    public var volumeSupportsAccessPermissions : Bool? { return _get(.volumeSupportsAccessPermissionsKey) }
+    
     /// true if this item is synced to the cloud, false if it is only a local file. 
     public var isUbiquitousItem : Bool? { return _get(.isUbiquitousItemKey) }