text: /* Copyright (C) 1995-1997,1999,2000,2003,2006,2007
     Free Software Foundation, Inc.
     This file is part of the GNU C Library.
  
     The GNU C Library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.
  
     The GNU C Library 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
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
     License along with the GNU C Library; if not, write to the Free
     Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
     02111-1307 USA.  */
  
  #ifndef _SYS_MSG_H
  #define _SYS_MSG_H
  
  #include <features.h>
  
  #define __need_size_t
  #include <stddef.h>
  
  /* Get common definition of System V style IPC.  */
  #include <sys/ipc.h>
  
  /* Get system dependent definition of `struct msqid_ds' and more.  */
  #include <bits/msq.h>
  
  /* Define types required by the standard.  */
  #define	__need_time_t
  #include <time.h>
  
  #ifndef __pid_t_defined
  typedef __pid_t pid_t;
  # define __pid_t_defined
  #endif
  
  #ifndef __ssize_t_defined
  typedef __ssize_t ssize_t;
  # define __ssize_t_defined
  #endif
  
  /* The following System V style IPC functions implement a message queue
     system.  The definition is found in XPG2.  */
  
  #ifdef __USE_GNU
  /* Template for struct to be used as argument for `msgsnd' and `msgrcv'.  */
  struct msgbuf
    {
      long int mtype;		/* type of received/sent message */
      char mtext[1];		/* text of the message */
    };
  #endif
  
  
  __BEGIN_DECLS
  
  /* Message queue control operation.  */
  extern int msgctl (int __msqid, int __cmd, struct msqid_ds *__buf) __THROW;
  
  /* Get messages queue.  */
  extern int msgget (key_t __key, int __msgflg) __THROW;
  
  /* Receive message from message queue.
  
     This function is a cancellation point and therefore not marked with
     __THROW.  */
  extern ssize_t msgrcv (int __msqid, void *__msgp, size_t __msgsz,
  		       long int __msgtyp, int __msgflg);
  
  /* Send message to message queue.
  
     This function is a cancellation point and therefore not marked with
     __THROW.  */
  extern int msgsnd (int __msqid, __const void *__msgp, size_t __msgsz,
  		   int __msgflg);
  
  __END_DECLS
  
  #endif /* sys/msg.h */
  