2005-03-17 Gonzalo Paniagua Javier <gonzalo@ximian.com>
[mono.git] / mcs / class / corlib / System.IO / MonoIO.cs
index 9bd7acb6ca4af4650d077553710173cbd1c0e5ef..5f7994e9ce2f2db07749d495987443b24fdabaed 100644 (file)
@@ -8,18 +8,45 @@
 // (C) 2002
 //
 
+//
+// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
 using System;
 using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Threading;
 
 namespace System.IO
 {
-       internal sealed class MonoIO {
+       unsafe internal sealed class MonoIO {
                public static readonly FileAttributes
                        InvalidFileAttributes = (FileAttributes)(-1);
 
                public static readonly IntPtr
                        InvalidHandle = (IntPtr)(-1L);
 
+               public static readonly bool SupportsAsync = GetSupportsAsync ();
+
                // error methods
 
                public static Exception GetException (MonoIOError error)
@@ -36,8 +63,12 @@ namespace System.IO
                        // FIXME: add more exception mappings here
                        case MonoIOError.ERROR_FILE_NOT_FOUND:
                                message = String.Format ("Could not find file \"{0}\"", path);
-                               return new FileNotFoundException (message);
+                               return new FileNotFoundException (message,
+                                                                 path);
 
+                       case MonoIOError.ERROR_TOO_MANY_OPEN_FILES:
+                               return new IOException ("Too many open files");
+                               
                        case MonoIOError.ERROR_PATH_NOT_FOUND:
                                message = String.Format ("Could not find a part of the path \"{0}\"", path);
                                return new DirectoryNotFoundException (message);
@@ -46,6 +77,10 @@ namespace System.IO
                                message = String.Format ("Access to the path \"{0}\" is denied.", path);
                                return new UnauthorizedAccessException (message);
 
+                       case MonoIOError.ERROR_INVALID_HANDLE:
+                               message = String.Format ("Invalid handle to path \"{0}\"", path);
+                               return new IOException (message);
+                               
                        case MonoIOError.ERROR_FILE_EXISTS:
                                message = String.Format ("Could not create file \"{0}\". File already exists.", path);
                                return new IOException (message);
@@ -54,6 +89,18 @@ namespace System.IO
                                message = String.Format ("Path is too long. Path: {0}", path); 
                                return new PathTooLongException (message);
 
+                       case MonoIOError.ERROR_INVALID_PARAMETER:
+                               message = String.Format ("Invalid parameter");
+                               return new IOException (message);
+
+                       case MonoIOError.ERROR_SHARING_VIOLATION:
+                               message = String.Format ("Sharing violation on path {0}", path);
+                               return new IOException (message);
+                               
+                       case MonoIOError.ERROR_LOCK_VIOLATION:
+                               message = String.Format ("Lock violation on path {0}", path);
+                               return new IOException (message);
+                               
                        default:
                                message = String.Format ("Win32 IO returned {0}. Path: {1}", error, path);
                                return new IOException (message);
@@ -108,6 +155,10 @@ namespace System.IO
                [MethodImplAttribute (MethodImplOptions.InternalCall)]
                public extern static MonoFileType GetFileType (IntPtr handle, out MonoIOError error);
 
+               // aio_* methods
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               extern static bool GetSupportsAsync ();
+
                public static bool Exists (string path, out MonoIOError error)
                {
                        FileAttributes attrs = GetFileAttributes (path,
@@ -137,6 +188,11 @@ namespace System.IO
                {
                        FileAttributes attrs = GetFileAttributes (path,
                                                                  out error);
+                                                                 
+                       // Actually, we are looking for a directory, not a file
+                       if (error == MonoIOError.ERROR_FILE_NOT_FOUND)
+                               error = MonoIOError.ERROR_PATH_NOT_FOUND;
+                               
                        if (attrs == InvalidFileAttributes)
                                return false;
 
@@ -158,6 +214,7 @@ namespace System.IO
                                                  FileMode mode,
                                                  FileAccess access,
                                                  FileShare share,
+                                                 bool async,
                                                  out MonoIOError error);
                
                [MethodImplAttribute (MethodImplOptions.InternalCall)]
@@ -170,7 +227,7 @@ namespace System.IO
                                               out MonoIOError error);
                
                [MethodImplAttribute (MethodImplOptions.InternalCall)]
-               public extern static int Write (IntPtr handle, byte [] src,
+               public extern static int Write (IntPtr handle, [In] byte [] src,
                                                int src_offset, int count,
                                                out MonoIOError error);
                
@@ -204,24 +261,86 @@ namespace System.IO
                                                long last_access_time,
                                                long last_write_time,
                                                out MonoIOError error)
+               {
+                       return SetFileTime (path,
+                               0,
+                               creation_time,
+                               last_access_time,
+                               last_write_time,
+                               DateTime.MinValue,
+                               out error);
+               }
+
+               public static bool SetCreationTime (string path,
+                                               DateTime dateTime,
+                                               out MonoIOError error)
+               {
+                       return SetFileTime (path, 1, -1, -1, -1, dateTime, out error);
+               }
+
+               public static bool SetLastAccessTime (string path,
+                                               DateTime dateTime,
+                                               out MonoIOError error)
+               {
+                       return SetFileTime (path, 2, -1, -1, -1, dateTime, out error);
+               }
+
+               public static bool SetLastWriteTime (string path,
+                                               DateTime dateTime,
+                                               out MonoIOError error)
+               {
+                       return SetFileTime (path, 3, -1, -1, -1, dateTime, out error);
+               }
+
+               public static bool SetFileTime (string path,
+                                               int type,
+                                               long creation_time,
+                                               long last_access_time,
+                                               long last_write_time,
+                                               DateTime dateTime,
+                                               out MonoIOError error)
                {
                        IntPtr handle;
                        bool result;
 
                        handle = Open (path, FileMode.Open,
                                       FileAccess.ReadWrite,
-                                      FileShare.ReadWrite, out error);
+                                      FileShare.ReadWrite, false, out error);
                        if (handle == MonoIO.InvalidHandle)
                                return false;
 
+                       switch (type) {
+                       case 1:
+                               creation_time = dateTime.ToFileTime ();
+                               break;
+                       case 2:
+                               last_access_time = dateTime.ToFileTime ();
+                               break;
+                       case 3:
+                               last_write_time = dateTime.ToFileTime ();
+                               break;
+                       }
+
                        result = SetFileTime (handle, creation_time,
                                              last_access_time,
                                              last_write_time, out error);
-                       Close (handle, out error);
+
+                       MonoIOError ignore_error;
+                       Close (handle, out ignore_error);
                        
                        return result;
                }
 
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               public extern static void Lock (IntPtr handle,
+                                               long position, long length,
+                                               out MonoIOError error);
+
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               public extern static void Unlock (IntPtr handle,
+                                                 long position, long length,
+                                                 out MonoIOError error);
+
                // console handles
 
                public extern static IntPtr ConsoleOutput {
@@ -273,6 +392,13 @@ namespace System.IO
 
                [MethodImplAttribute (MethodImplOptions.InternalCall)]
                public extern static int GetTempPath(out string path);
+
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               public extern static void BeginWrite (IntPtr handle,FileStreamAsyncResult ares);
+
+               [MethodImplAttribute (MethodImplOptions.InternalCall)]
+               public extern static void BeginRead (IntPtr handle, FileStreamAsyncResult ares);
+
        }
 }