D-Bus  1.4.18
dbus-pipe.c
00001 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
00002 /* dbus-pipe.c pipe implementation (internal to D-Bus implementation)
00003  * 
00004  * Copyright (C) 2002, 2003, 2006  Red Hat, Inc.
00005  * Copyright (C) 2003 CodeFactory AB
00006  *
00007  * Licensed under the Academic Free License version 2.1
00008  * 
00009  * This program is free software; you can redistribute it and/or modify
00010  * it under the terms of the GNU General Public License as published by
00011  * the Free Software Foundation; either version 2 of the License, or
00012  * (at your option) any later version.
00013  *
00014  * This program is distributed in the hope that it will be useful,
00015  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00016  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017  * GNU General Public License for more details.
00018  * 
00019  * You should have received a copy of the GNU General Public License
00020  * along with this program; if not, write to the Free Software
00021  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
00022  *
00023  */
00024 
00025 #include <config.h>
00026 #include "dbus-pipe.h"
00027 
00028 /*
00029  * init a pipe instance.
00030  *
00031  * @param pipe the pipe
00032  * @param fd the file descriptor to init from 
00033  */
00034 void
00035 _dbus_pipe_init (DBusPipe *pipe,
00036                  intptr_t  fd)
00037 {
00038   pipe->fd_or_handle = fd;
00039 }
00040 
00046 void
00047 _dbus_pipe_init_stdout (DBusPipe *pipe)
00048 {
00049   _dbus_pipe_init (pipe, 1);
00050 }
00051 
00059 dbus_bool_t
00060 _dbus_pipe_is_valid(DBusPipe *pipe)
00061 {
00062   return pipe->fd_or_handle >= 0;
00063 }
00064 
00071 dbus_bool_t
00072 _dbus_pipe_is_stdout_or_stderr (DBusPipe *pipe)
00073 {
00074   return pipe->fd_or_handle == 1 || pipe->fd_or_handle == 2;
00075 }
00076 
00081 void
00082 _dbus_pipe_invalidate (DBusPipe *pipe)
00083 {
00084   pipe->fd_or_handle = -1;
00085 }