usr/src/cmd/lp/lib/msgs/mdisconnect.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 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 #ident  "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.5   */
  27 /* LINTLIBRARY */
  28
  29 # include       <stropts.h>
  30 # include       <errno.h>
  31 # include       <stdlib.h>
  32
  33 #include "lp.h"
  34 #include "msgs.h"
  35
  36 #if     defined(__STDC__)
  37 static void     disconnect3_2 ( MESG * );
  38 #else
  39 static void     disconnect3_2();
  40 #endif
  41
  42 #if     defined(__STDC__)
  43 int mdisconnect ( MESG * md )
  44 #else
  45 int mdisconnect (md)
  46     MESG        *md;
  47 #endif
  48 {
  49     int         retvalue = 0;
  50     void        (**fnp)();
  51     MQUE        *p;
  52
  53     if (!md)
  54     {
  55         errno = ENXIO;
  56         return(-1);
  57     }
  58
  59     switch(md->type)
  60     {
  61         case MD_CHILD:
  62         case MD_STREAM:
  63         case MD_BOUND:
  64             if (md->writefd >= 0)
  65                 (void) Close(md->writefd);
  66             if (md->readfd >= 0)
  67                 (void) Close(md->readfd);
  68             break;
  69
  70         case MD_USR_FIFO:
  71         case MD_SYS_FIFO:
  72            disconnect3_2(md);
  73            break;
  74     }
  75
  76     if (md->on_discon)
  77     {
  78         for (fnp = md->on_discon; *fnp; fnp++)
  79         {
  80             (*fnp)(md);
  81             retvalue++;
  82         }
  83         Free(md->on_discon);
  84     }
  85
  86     if (md->file)
  87         Free(md->file);
  88
  89     if (md->mque)
  90     {
  91         while ((p = md->mque) != NULL)
  92         {
  93             md->mque = p->next;
  94             Free(p->dat->buf);
  95             Free(p->dat);
  96             Free(p);
  97         }
  98     }
  99     Free(md);
 100
 101     return(retvalue);
 102 }
 103
 104 int     discon3_2_is_running = 0;
 105
 106 #if     defined(__STDC__)
 107 static void disconnect3_2 ( MESG * md )
 108 #else
 109 static void disconnect3_2 (md)
 110     MESG        *md;
 111 #endif
 112 {
 113     char        *msgbuf = 0;
 114     int         size;
 115
 116     discon3_2_is_running = 1;
 117
 118     if (md->writefd != -1)
 119     {
 120         size = putmessage((char *)0, S_GOODBYE);
 121         if ((msgbuf = (char *)Malloc((unsigned)size)))
 122         {
 123             (void)putmessage (msgbuf, S_GOODBYE);
 124             (void)msend (msgbuf);
 125             Free (msgbuf);
 126         }
 127
 128         (void) Close (md->writefd);
 129     }
 130
 131     if (md->readfd != -1)
 132         (void) Close (md->readfd);
 133
 134     if (md->file)
 135     {
 136         (void) Unlink (md->file);
 137         Free (md->file);
 138     }
 139
 140     discon3_2_is_running = 0;
 141 }