dbus-file-win.c

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-file-win.c windows related file implementation (internal to D-Bus implementation)
 * 
 * Copyright (C) 2002, 2003, 2006  Red Hat, Inc.
 * Copyright (C) 2003 CodeFactory AB
 *
 * Licensed under the Academic Free License version 2.1
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#include <config.h>
#include "dbus-protocol.h"
#include "dbus-string.h"
#include "dbus-internals.h"
#include "dbus-sysdeps-win.h"
#include "dbus-pipe.h"

#include <windows.h>


static int
_dbus_file_read (HANDLE            hnd,
                 DBusString       *buffer,
                 int               count,
                 DBusError        *error)
{
  BOOL result;
  DWORD bytes_read;
  int start;
  char *data;

  _DBUS_ASSERT_ERROR_IS_CLEAR (error);

  _dbus_assert (count >= 0);

  start = _dbus_string_get_length (buffer);

  if (!_dbus_string_lengthen (buffer, count))
    {
      dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
      return -1;
    }

  data = _dbus_string_get_data_len (buffer, start, count);

  result = ReadFile (hnd, data, count, &bytes_read, NULL);
  if (result == 0)
    {
      char *emsg = _dbus_win_error_string (GetLastError ());
      dbus_set_error (error, _dbus_win_error_from_last_error (),
                      "Failed to read from %p: %s", hnd, emsg);
      _dbus_win_free_error_string (emsg);
      return -1;
    }

  <