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msgrecv.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*           Copyright (c) 1990-2007 AT&T Knowledge Ventures            *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                      by AT&T Knowledge Ventures                      *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                                                                      *
***********************************************************************/
#pragma prototyped

/*
 * syscall message server side receipt
 */

#include "msglib.h"

/*
 * read and blast message from fd into msg
 */

ssize_t
msgrecv(int fd, register Msg_call_t* msg)
{
      register ssize_t  n;

      if ((n = msgread(fd, msg->data, sizeof(msg->data))) <= 0)
            return n;
      msg->size = n;
      return msgblast(msg);
}

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