added pipe related files real

1 files changed, 84 insertions, 0 deletions

diff --git a/dbus/dbus-pipe.c b/dbus/dbus-pipe.c
new file mode 100644
index 00000000..59cf9346
--- /dev/null
+++ b/dbus/dbus-pipe.c
@@ -0,0 +1,84 @@
+/* -*- 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 "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_or_handle = 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_or_handle >= 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_or_handle == 1 || pipe->fd_or_handle == 2;
+}
+
+/**
+ * Initializes a pipe to an invalid value.
+ * @param pipe the pipe
+ */
+void
+_dbus_pipe_invalidate (DBusPipe *pipe)
+{
+  pipe->fd_or_handle = -1;
+}