From 8e39e35bea215bf160f0895aa3868928fb106f28 Mon Sep 17 00:00:00 2001
From: Gautham B A <gautham.bangalore@gmail.com>
Date: Fri, 8 Jul 2022 09:29:13 +0530
Subject: [PATCH] HDFS-16466. Implement Linux permission flags on Windows
 (#4526)

* HDFS-16466. Implement Linux permission flags on Windows

* statinfo.cc uses POSIX permission flags.
  These flags aren't available for Windows.
* This PR implements the equivalent flags
  on Windows to make this cross platform
  compatible.
---
 .../native/libhdfspp/lib/common/statinfo.cc   |  4 +-
 .../native/libhdfspp/lib/x-platform/stat.h    | 42 +++++++++++++++++++
 2 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/x-platform/stat.h

diff --git a/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/statinfo.cc b/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/statinfo.cc
index 2fb744fbdd..072a3f3658 100644
--- a/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/statinfo.cc
+++ b/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/statinfo.cc
@@ -17,10 +17,12 @@
  */
 
 #include <hdfspp/statinfo.h>
-#include <sys/stat.h>
+
 #include <sstream>
 #include <iomanip>
 
+#include "x-platform/stat.h"
+
 namespace hdfs {
 
 StatInfo::StatInfo()
diff --git a/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/x-platform/stat.h b/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/x-platform/stat.h
new file mode 100644
index 0000000000..c078d44a51
--- /dev/null
+++ b/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/x-platform/stat.h
@@ -0,0 +1,42 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef NATIVE_LIBHDFSPP_LIB_CROSS_PLATFORM_STAT
+#define NATIVE_LIBHDFSPP_LIB_CROSS_PLATFORM_STAT
+
+#include <sys/stat.h>
+
+#if defined(_WIN32)
+
+// Windows defines the macros for user RWX (_S_IREAD, _S_IWRITE and _S_IEXEC),
+// but not for group and others. We implement the permissions for group and
+// others through appropriate bit shifting.
+
+#define S_IRUSR _S_IREAD
+#define S_IWUSR _S_IWRITE
+#define S_IXUSR _S_IEXEC
+#define S_IRGRP (S_IRUSR >> 3)
+#define S_IWGRP (S_IWUSR >> 3)
+#define S_IXGRP (S_IXUSR >> 3)
+#define S_IROTH (S_IRGRP >> 3)
+#define S_IWOTH (S_IWGRP >> 3)
+#define S_IXOTH (S_IXGRP >> 3)
+
+#endif
+
+#endif