1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-pipe-win.c windows related pipe implementation
3 *
4 * Copyright (C) 2002, 2003, 2006  Red Hat, Inc.
5 * Copyright (C) 2003 CodeFactory AB
6 *
7 * Licensed under the Academic Free License version 2.1
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
22 *
23 */
24
25#include <config.h>
26#include "dbus-protocol.h"
27#include "dbus-string.h"
28#include "dbus-internals.h"
29#include "dbus-pipe.h"
30
31#include <windows.h>
32
33/**
34 * write data to a pipe.
35 *
36 * @param pipe the pipe instance
37 * @param buffer the buffer to write data from
38 * @param start the first byte in the buffer to write
39 * @param len the number of bytes to try to write
40 * @param error error return
41 * @returns the number of bytes written or -1 on error
42 */
43int
44_dbus_pipe_write (DBusPipe         *pipe,
45                  const DBusString *buffer,
46                  int               start,
47                  int               len,
48                  DBusError        *error)
49{
50  DWORD written;
51  BOOL res;
52
53  const char *buffer_c = _dbus_string_get_const_data (buffer);
54
55  res = WriteFile ((HANDLE) pipe->fd_or_handle, buffer_c + start, len, &written, NULL);
56  if (res == 0 || written < 0)
57    {
58      dbus_set_error (error, DBUS_ERROR_FAILED,
59                      "Writing to pipe: %s\n",
60                      _dbus_strerror_from_errno ());
61    }
62  return written;
63}
64
65/**
66 * close a pipe.
67 *
68 * @param pipe the pipe instance
69 * @param error return location for an error
70 * @returns #FALSE if error is set
71 */
72int
73_dbus_pipe_close  (DBusPipe         *pipe,
74                   DBusError        *error)
75{
76  _DBUS_ASSERT_ERROR_IS_CLEAR (error);
77
78  if (CloseHandle ((HANDLE) pipe->fd_or_handle) == 0)
79    {
80      dbus_set_error (error, _dbus_error_from_system_errno (),
81                      "Could not close pipe %d: %s", pipe->fd_or_handle,
82                      _dbus_strerror_from_errno ());
83      return -1;
84    }
85  else
86    {
87      _dbus_pipe_invalidate (pipe);
88      return 0;
89    }
90}
91