sys,dll: DeviceControl operation

tst/winfsp-tests/devctl-test.c

@@ -0,0 +1,74 @@
+/**
+ * @file devctl-test.c
+ *
+ * @copyright 2015-2018 Bill Zissimopoulos
+ */
+/*
+ * This file is part of WinFsp.
+ *
+ * You can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 3 as published by the Free Software
+ * Foundation.
+ *
+ * Licensees holding a valid commercial license may use this file in
+ * accordance with the commercial license agreement provided with the
+ * software.
+ */
+
+#include <winfsp/winfsp.h>
+#include <tlib/testsuite.h>
+#include <strsafe.h>
+#include "memfs.h"
+
+#include "winfsp-tests.h"
+
+static void devctl_dotest(ULONG Flags, PWSTR Prefix, PWSTR Drive)
+{
+    void *memfs = memfs_start(Flags);
+
+    WCHAR FilePath[1024];
+    HANDLE Handle;
+    BOOL Success;
+    CHAR Buffer[26];
+    DWORD BytesTransferred;
+
+    StringCbPrintfW(FilePath, sizeof FilePath, L"%s%s\\",
+        Prefix ? L"" : L"\\\\?\\GLOBALROOT", Prefix ? Prefix : memfs_volumename(memfs));
+
+    Handle = CreateFileW(FilePath,
+        GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING,
+        FILE_FLAG_BACKUP_SEMANTICS, 0);
+    ASSERT(INVALID_HANDLE_VALUE != Handle);
+
+    Success = DeviceIoControl(Handle,
+        CTL_CODE(0x8000 + 'M', 'R', METHOD_BUFFERED, FILE_ANY_ACCESS),
+        "ABCDEFghijklmNOPQRStuvwxyz", 26,
+        Buffer, sizeof Buffer,
+        &BytesTransferred,
+        0);
+    ASSERT(Success);
+
+    ASSERT(26 == BytesTransferred);
+    ASSERT(0 == memcmp("NOPQRStuvwxyzABCDEFghijklm", Buffer, BytesTransferred));
+
+    Success = CloseHandle(Handle);
+    ASSERT(Success);
+
+    memfs_stop(memfs);
+}
+
+static void devctl_test(void)
+{
+    if (WinFspDiskTests)
+        devctl_dotest(MemfsDisk, 0, 0);
+    if (WinFspNetTests)
+        devctl_dotest(MemfsNet, L"\\\\memfs\\share", L"\\\\memfs\\share");
+}
+
+void devctl_tests(void)
+{
+    if (OptExternal)
+        return;
+
+    TEST(devctl_test);
+}

tst/winfsp-tests/winfsp-tests.c

@@ -199,6 +199,7 @@ int main(int argc, char *argv[])
     TESTSUITE(lock_tests);
     TESTSUITE(dirctl_tests);
     TESTSUITE(exec_tests);
+    TESTSUITE(devctl_tests);
     TESTSUITE(reparse_tests);
     TESTSUITE(stream_tests);
     TESTSUITE(oplock_tests);