bsd/netat/adsp_CLDeny.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * CLDeny.c
  24  *
  25  * From Mike Shoemaker 9/6/90
  26  *   Modified, April 9, 1997 by Tuyen Nguyen for MacOSX.
  27  */
  28
  29 #include <sys/errno.h>
  30 #include <sys/types.h>
  31 #include <sys/param.h>
  32 #include <machine/spl.h>
  33 #include <sys/systm.h>
  34 #include <sys/kernel.h>
  35 #include <sys/proc.h>
  36 #include <sys/filedesc.h>
  37 #include <sys/fcntl.h>
  38 #include <sys/mbuf.h>
  39 #include <sys/socket.h>
  40
  41 #include <netat/sysglue.h>
  42 #include <netat/appletalk.h>
  43 #include <netat/ddp.h>
  44 #include <netat/at_pcb.h>
  45 #include <netat/debug.h>
  46 #include <netat/adsp.h>
  47 #include <netat/adsp_internal.h>
  48
  49 /*
  50  * dspCLDeny
  51  *
  52  * INPUTS:
  53  *      --> ccbRefNum           refnum of connection listener
  54  *      --> remoteCID           connection identifier of remote connection end
  55  *      --> remoteAddress       internet address of remote connection end
  56  *
  57  * OUTPUTS:
  58  *      none
  59  *
  60  * ERRORS:
  61  *      errRefNum               bad connection refnum
  62  *      errState                not a connection listener
  63  *      errAborted              request aborted by a Remove call
  64  */
  65 int adspCLDeny(sp, pb)                  /* (DSPPBPtr pb) */
  66     struct adspcmd *pb;
  67     CCBPtr sp;
  68 {
  69     gbuf_t *mp;
  70     ADSP_FRAMEPtr adspp;
  71     ADSP_OPEN_DATAPtr adspop;
  72
  73     if (sp == 0) {
  74         pb->ioResult = errRefNum;
  75         return EINVAL;
  76     }
  77     mp = gbuf_alloc(AT_WR_OFFSET + DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN,
  78                 PRI_LO);
  79     gbuf_rinc(mp,AT_WR_OFFSET);
  80     gbuf_wset(mp,DDPL_FRAME_LEN);
  81     adspp = (ADSP_FRAMEPtr)gbuf_wptr(mp);
  82     gbuf_winc(mp,ADSP_FRAME_LEN);
  83     bzero((caddr_t) gbuf_rptr(mp),DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN);
  84     adspp->descriptor = ADSP_CONTROL_BIT | ADSP_CTL_ODENY;
  85     adspop = (ADSP_OPEN_DATAPtr)gbuf_wptr(mp);
  86     gbuf_winc(mp,ADSP_OPEN_FRAME_LEN);
  87     UAS_ASSIGN(adspop->dstCID, pb->u.openParams.remoteCID);
  88     UAS_ASSIGN(adspop->version, 0x100);
  89     adsp_sendddp(sp, mp,
  90                  DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN,
  91                  &pb->u.openParams.remoteAddress, DDP_ADSP);
  92     adspioc_ack(0, pb->ioc, pb->gref);
  93     return 0;
  94 }