bsd/netat/adsp_CLDeny.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * CLDeny.c
  27  *
  28  * From Mike Shoemaker 9/6/90
  29  *   Modified, April 9, 1997 by Tuyen Nguyen for MacOSX.
  30  */
  31
  32 #include <sys/errno.h>
  33 #include <sys/types.h>
  34 #include <sys/param.h>
  35 #include <machine/spl.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/proc.h>
  39 #include <sys/filedesc.h>
  40 #include <sys/fcntl.h>
  41 #include <sys/mbuf.h>
  42 #include <sys/socket.h>
  43
  44 #include <netat/sysglue.h>
  45 #include <netat/appletalk.h>
  46 #include <netat/ddp.h>
  47 #include <netat/at_pcb.h>
  48 #include <netat/debug.h>
  49 #include <netat/adsp.h>
  50 #include <netat/adsp_internal.h>
  51
  52 /*
  53  * dspCLDeny
  54  *
  55  * INPUTS:
  56  *      --> ccbRefNum           refnum of connection listener
  57  *      --> remoteCID           connection identifier of remote connection end
  58  *      --> remoteAddress       internet address of remote connection end
  59  *
  60  * OUTPUTS:
  61  *      none
  62  *
  63  * ERRORS:
  64  *      errRefNum               bad connection refnum
  65  *      errState                not a connection listener
  66  *      errAborted              request aborted by a Remove call
  67  */
  68 int adspCLDeny(sp, pb)                  /* (DSPPBPtr pb) */
  69     struct adspcmd *pb;
  70     CCBPtr sp;
  71 {
  72     gbuf_t *mp;
  73     ADSP_FRAMEPtr adspp;
  74     ADSP_OPEN_DATAPtr adspop;
  75
  76     if (sp == 0) {
  77         pb->ioResult = errRefNum;
  78         return EINVAL;
  79     }
  80     mp = gbuf_alloc(AT_WR_OFFSET + DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN,
  81                 PRI_LO);
  82     gbuf_rinc(mp,AT_WR_OFFSET);
  83     gbuf_wset(mp,DDPL_FRAME_LEN);
  84     adspp = (ADSP_FRAMEPtr)gbuf_wptr(mp);
  85     gbuf_winc(mp,ADSP_FRAME_LEN);
  86     bzero((caddr_t) gbuf_rptr(mp),DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN);
  87     adspp->descriptor = ADSP_CONTROL_BIT | ADSP_CTL_ODENY;
  88     adspop = (ADSP_OPEN_DATAPtr)gbuf_wptr(mp);
  89     gbuf_winc(mp,ADSP_OPEN_FRAME_LEN);
  90     UAS_ASSIGN(adspop->dstCID, pb->u.openParams.remoteCID);
  91     UAS_ASSIGN(adspop->version, 0x100);
  92     adsp_sendddp(sp, mp,
  93                  DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN,
  94                  &pb->u.openParams.remoteAddress, DDP_ADSP);
  95     adspioc_ack(0, pb->ioc, pb->gref);
  96     return 0;
  97 }