GetFileInformationByHandle() fails for pipe handles according to

files/file.c

@@ -557,6 +557,14 @@ DWORD WINAPI GetFileInformationByHandle( HANDLE hFile,
         req->handle = hFile;
         if ((ret = !SERVER_CALL_ERR()))
         {
+	    /* FIXME: which file types are supported ?
+	     * Serial ports (FILE_TYPE_CHAR) are not,
+	     * and MSDN also says that pipes are not supported.
+	     * FILE_TYPE_REMOTE seems to be supported according to
+	     * MSDN q234741.txt */
+	    if ((req->type == FILE_TYPE_DISK)
+	    ||  (req->type == FILE_TYPE_REMOTE))
+	    {
                 RtlSecondsSince1970ToTime( req->write_time, &info->ftCreationTime );
                 RtlSecondsSince1970ToTime( req->write_time, &info->ftLastWriteTime );
                 RtlSecondsSince1970ToTime( req->access_time, &info->ftLastAccessTime );
@@ -568,6 +576,12 @@ DWORD WINAPI GetFileInformationByHandle( HANDLE hFile,
                 info->nFileIndexHigh       = req->index_high;
                 info->nFileIndexLow        = req->index_low;
 	    }
+	    else
+	    {
+		SetLastError(ERROR_NOT_SUPPORTED);
+		ret = 0;
+	    }
+        }
     }
     SERVER_END_REQ;
     return ret;
@@ -621,7 +635,7 @@ DWORD WINAPI GetFileAttributesW( LPCWSTR name )
 DWORD WINAPI GetFileSize( HANDLE hFile, LPDWORD filesizehigh )
 {
     BY_HANDLE_FILE_INFORMATION info;
-    if (!GetFileInformationByHandle( hFile, &info )) return 0;
+    if (!GetFileInformationByHandle( hFile, &info )) return -1;
     if (filesizehigh) *filesizehigh = info.nFileSizeHigh;
     return info.nFileSizeLow;
 }