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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-pipe.c pipe 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-pipe.h"
/*
* init a pipe instance.
*
* @param pipe the pipe
* @param fd the file descriptor to init from
*/
void
_dbus_pipe_init (DBusPipe *pipe,
int fd)
{
pipe->fd = fd;
}
/**
* init a pipe with stdout
*
* @param pipe the pipe
*/
void
_dbus_pipe_init_stdout (DBusPipe *pipe)
{
_dbus_pipe_init (pipe, 1);
}
/**
* check if a pipe is valid; pipes can be set invalid, similar to
* a -1 file descriptor.
*
* @param pipe the pipe instance
* @returns #FALSE if pipe is not valid
*/
dbus_bool_t
_dbus_pipe_is_valid(DBusPipe *pipe)
{
return pipe->fd >= 0;
}
/**
* Check if a pipe is stdout or stderr.
*
* @param pipe the pipe instance
* @returns #TRUE if pipe is one of the standard out/err channels
*/
dbus_bool_t
_dbus_pipe_is_stdout_or_stderr (DBusPipe *pipe)
{
return pipe->fd == 1 || pipe->fd == 2;
}
/**
* Initializes a pipe to an invalid value.
* @param pipe the pipe
*/
void
_dbus_pipe_invalidate (DBusPipe *pipe)
{
pipe->fd = -1;
}
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