Initial merge of (incomplete) Banana Pi updates (#993)

cpp/test/linux_os_stubs.cpp

@@ -0,0 +1,59 @@
+
+//---------------------------------------------------------------------------
+//
+// SCSI Target Emulator RaSCSI Reloaded
+// for Raspberry Pi
+//
+// Copyright (C) 2022 akuker
+//
+//---------------------------------------------------------------------------
+
+#include "test/linux_os_stubs.h"
+#include "test/test_shared.h"
+
+#include <filesystem>
+#include <map>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <string>
+#include <sys/epoll.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+
+using namespace std;
+using namespace filesystem;
+
+extern "C" {
+
+#ifdef __USE_LARGEFILE64
+FILE *__wrap_fopen64(const char *__restrict __filename, const char *__restrict __modes)
+#else
+FILE *__wrap_fopen(const char *__restrict __filename, const char *__restrict __modes)
+#endif
+{
+    path new_filename;
+    bool create_directory = false;
+
+    // If we're trying to open up the device tree soc ranges,
+    // re-direct it to a temporary local file.
+    if (string(__filename) == "/proc/device-tree/soc/ranges") {
+        create_directory = true;
+        new_filename     = test_data_temp_path;
+        new_filename += path(__filename);
+    } else {
+        new_filename = path(__filename);
+    }
+
+    if (create_directory) {
+        create_directories(new_filename.parent_path());
+    }
+#ifdef __USE_LARGEFILE64
+    return __real_fopen64(new_filename.c_str(), __modes);
+#else
+    return __real_fopen(new_filename.c_str(), __modes);
+#endif
+}
+
+} // end extern "C"