mcs/class/corlib/corefx/Interop.ReadDir.Mono.cs

   1 // Licensed to the .NET Foundation under one or more agreements.
   2 // The .NET Foundation licenses this file to you under the MIT license.
   3 // See the LICENSE file in the project root for more information.
   4
   5 using System;
   6 using System.Runtime.InteropServices;
   7
   8 internal static partial class Interop
   9 {
  10         internal static partial class Sys
  11         {
  12                 [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_OpenDir", SetLastError = true)]
  13                 internal static extern IntPtr OpenDir_native(string path);
  14
  15                 [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_ReadDirR", SetLastError = false)]
  16                 internal static extern unsafe int ReadDirR_native(IntPtr dir, byte* buffer, int bufferSize, out DirectoryEntry outputEntry);
  17
  18                 [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CloseDir", SetLastError = true)]
  19                 internal static extern int CloseDir_native(IntPtr dir);
  20
  21                 internal static IntPtr OpenDir (string path) {
  22                         IntPtr result;
  23                         do {
  24                                 result = OpenDir_native (path);
  25                         } while (result == IntPtr.Zero && Marshal.GetLastWin32Error () == (int) Interop.Error.EINTR);
  26                         return result;
  27                 }
  28
  29                 internal static int CloseDir (IntPtr dir) {
  30                         int result;
  31                         do {
  32                                 result = CloseDir_native (dir);
  33                         } while (result < 0 && Marshal.GetLastWin32Error () == (int) Interop.Error.EINTR);
  34                         return result;
  35                 }
  36
  37                 internal static unsafe int ReadDirR (IntPtr dir, byte* buffer, int bufferSize, out DirectoryEntry outputEntry) {
  38                         int result;
  39                         do {
  40                                 result = ReadDirR_native (dir, buffer, bufferSize, out outputEntry);
  41                         } while (result == (int) Interop.Error.EINTR);
  42                         return result;
  43                 }
  44         }
  45 }