glibc/sysdeps/unix/sysv/linux/msgrcv.c

/* Copyright (C) 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#include <sys/msg.h>

int
msgrcv (msqid, msgp, msgsz, msgtyp, msgflg)
     int msqid;
     void *msgp;
     size_t msgsz;
     long msgtyp;
     int msgflg;
{
  /* The problem here is that Linux' calling convention only allows up to
     fives parameters to a system call.  */
  struct ipc_kludge tmp;

  tmp.msgp = msgp;
  tmp.msgtyp = msgtyp;

  return __ipc (IPCOP_msgrcv, msqid, msgsz, msgflg, &tmp);
}