private static SafeFileHandle OpenHandle(string fullPath, bool asDirectory)
{
String root = fullPath.Substring(0, PathInternal.GetRootLength(fullPath));
if (root == fullPath && root[1] == Path.VolumeSeparatorChar)
{
// intentionally not fullpath, most upstack public APIs expose this as path.
throw new ArgumentException(SR.Arg_PathIsVolume, "path");
}
Interop.Kernel32.SECURITY_ATTRIBUTES secAttrs = default(Interop.Kernel32.SECURITY_ATTRIBUTES);
SafeFileHandle handle = Interop.Kernel32.SafeCreateFile(
fullPath,
(int)Interop.Kernel32.GenericOperations.GENERIC_WRITE,
FileShare.ReadWrite | FileShare.Delete,
ref secAttrs,
FileMode.Open,
asDirectory ? (int)Interop.Kernel32.FileOperations.FILE_FLAG_BACKUP_SEMANTICS : (int)FileOptions.None,
IntPtr.Zero
);
if (handle.IsInvalid)
{
int errorCode = Marshal.GetLastWin32Error();
// NT5 oddity - when trying to open "C:\" as a File,
// we usually get ERROR_PATH_NOT_FOUND from the OS. We should
// probably be consistent w/ every other directory.
if (!asDirectory && errorCode == Interop.Errors.ERROR_PATH_NOT_FOUND && fullPath.Equals(Directory.GetDirectoryRoot(fullPath)))
errorCode = Interop.Errors.ERROR_ACCESS_DENIED;
throw Win32Marshal.GetExceptionForWin32Error(errorCode, fullPath);
}
return handle;
}
public override void RemoveDirectory(string fullPath, bool recursive)
