#ifndef _SMI_MSG_H_#define _SMI_MSG_H_#include "smi.h"/*	Following not in book. Note that as of OS X 10.2, Darwin does not have Sys V msgs.*/#if (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 4) || defined(FREEBSD)#define HAVE_SYSVMSG#endif/*	Simple Messaging Interface - System V msg version*/SMIQ *smi_open_msg(const char *name, SMIENTITY entity, size_t msgsize);bool smi_close_msg(SMIQ *sqp);bool smi_send_getaddr_msg(SMIQ *sqp, struct client_id *client,  void **addr);bool smi_send_release_msg(SMIQ *sqp);bool smi_receive_getaddr_msg(SMIQ *sqp, void **addr);bool smi_receive_release_msg(SMIQ *sqp);#endif /* _SMI_MSG_H_ */