root/usr/src/cmd/lp/lib/msgs/mdestroy.c
/*
 * 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 1996 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */

# include       <string.h>
# include       <stropts.h>
# include       <errno.h>
# include       <stdlib.h>
# include       <unistd.h>

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

int mdestroy(MESG *md)
{
        struct pollfd pfd;
        struct strrecvfd    recbuf;

        if (!md || md->type != MD_MASTER || md->file == NULL) {
                errno = EINVAL;
                return(-1);
        }

        if (fdetach(md->file) != 0)
                return(-1);

        pfd.fd = md->readfd;
        pfd.events = POLLIN;
        while (poll(&pfd, 1, 500) > 0) {
                if (ioctl(md->readfd, I_RECVFD, &recbuf) == 0)
                        close(recbuf.fd);
        }

        /*
         * Pop connld module
         */
        if (ioctl(md->writefd, I_POP, 0) != 0)
                return(-1);

        Free(md->file);
        md->file = NULL;

        (void) mdisconnect(md);

        return(0);
}