1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-pipe.c pipe implementation (internal to D-Bus implementation)
4 * Copyright (C) 2002, 2003, 2006 Red Hat, Inc.
5 * Copyright (C) 2003 CodeFactory AB
7 * Licensed under the Academic Free License version 2.1
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.
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.
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
26 #include "dbus-pipe.h"
29 * init a pipe instance.
31 * @param pipe the pipe
32 * @param fd the file descriptor to init from
35 _dbus_pipe_init (DBusPipe *pipe,
38 pipe->fd_or_handle = fd;
42 * init a pipe with stdout
44 * @param pipe the pipe
47 _dbus_pipe_init_stdout (DBusPipe *pipe)
49 _dbus_pipe_init (pipe, 1);
53 * check if a pipe is valid; pipes can be set invalid, similar to
54 * a -1 file descriptor.
56 * @param pipe the pipe instance
57 * @returns #FALSE if pipe is not valid
60 _dbus_pipe_is_valid(DBusPipe *pipe)
62 return pipe->fd_or_handle >= 0;
66 * Check if a pipe is stdout or stderr.
68 * @param pipe the pipe instance
69 * @returns #TRUE if pipe is one of the standard out/err channels
72 _dbus_pipe_is_stdout_or_stderr (DBusPipe *pipe)
74 return pipe->fd_or_handle == 1 || pipe->fd_or_handle == 2;
78 * Initializes a pipe to an invalid value.
79 * @param pipe the pipe
82 _dbus_pipe_invalidate (DBusPipe *pipe)
84 pipe->fd_or_handle = -1;