xref: /illumos-gate/usr/src/cmd/lp/lib/msgs/msend.c (revision 7c478bd9)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
/*	  All Rights Reserved  	*/


#ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.4	*/
/* LINTLIBRARY */
# include	<errno.h>

# include	"lp.h"
# include	"msgs.h"

extern MESG	*lp_Md;
extern int	discon3_2_is_running;

/*
** msend() - SEND A MESSAGE VIA FIFOS
*/

#if	defined(__STDC__)
int msend ( char * msgbuf )
#else
int msend (msgbuf)
    char	*msgbuf;
#endif
{
    int		rval;

    do
    {
	if ((rval = mwrite(lp_Md, msgbuf)) < 0)
	{
	    /*
	    ** "mclose()" will try to say goodbye to the Spooler,
	    ** and that, of course, will fail. But we'll call
	    ** "mclose()" anyway, for the other cleanup it does.
	    */
	    if (errno == EPIPE)
	    {
		if (!discon3_2_is_running)
		    (void)mclose ();
		errno = EIDRM;
	    }
	}
    }
    while (rval < 0 && errno == EINTR);

    return(rval);
}