usr/src/cmd/lp/lib/msgs/mdestroy.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1996 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.5   */
  32 # include       <string.h>
  33 # include       <stropts.h>
  34 # include       <errno.h>
  35 # include       <stdlib.h>
  36 # include       <unistd.h>
  37
  38 # include       "lp.h"
  39 # include       "msgs.h"
  40
  41 int mdestroy(MESG *md)
  42 {
  43         struct pollfd pfd;
  44         struct strrecvfd    recbuf;
  45
  46         if (!md || md->type != MD_MASTER || md->file == NULL) {
  47                 errno = EINVAL;
  48                 return(-1);
  49         }
  50
  51         if (fdetach(md->file) != 0)
  52                 return(-1);
  53
  54         pfd.fd = md->readfd;
  55         pfd.events = POLLIN;
  56         while (poll(&pfd, 1, 500) > 0) {
  57                 if (ioctl(md->readfd, I_RECVFD, &recbuf) == 0)
  58                         close(recbuf.fd);
  59         }
  60
  61         /*
  62          * Pop connld module
  63          */
  64         if (ioctl(md->writefd, I_POP, 0) != 0)
  65                 return(-1);
  66
  67         Free(md->file);
  68         md->file = NULL;
  69
  70         (void) mdisconnect(md);
  71
  72         return(0);
  73 }