Adding upstream version 1.16.10.upstream/1.16.10upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/cmd/go/internal/modload/stat_windows.go b/src/cmd/go/internal/modload/stat_windows.go
new file mode 100644
index 0000000..0ac2391
--- /dev/null
+++ b/src/cmd/go/internal/modload/stat_windows.go
@@ -0,0 +1,21 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build windows
+
+package modload
+
+import "io/fs"
+
+// hasWritePerm reports whether the current user has permission to write to the
+// file with the given info.
+func hasWritePerm(_ string, fi fs.FileInfo) bool {
+	// Windows has a read-only attribute independent of ACLs, so use that to
+	// determine whether the file is intended to be overwritten.
+	//
+	// Per https://golang.org/pkg/os/#Chmod:
+	// “On Windows, only the 0200 bit (owner writable) of mode is used; it
+	// controls whether the file's read-only attribute is set or cleared.”
+	return fi.Mode()&0200 != 0
+}