bsd/netat/adsp_CLDeny.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * CLDeny.c
  30  *
  31  * From Mike Shoemaker 9/6/90
  32  *   Modified, April 9, 1997 by Tuyen Nguyen for MacOSX.
  33  */
  34
  35 #include <sys/errno.h>
  36 #include <sys/types.h>
  37 #include <sys/param.h>
  38 #include <machine/spl.h>
  39 #include <sys/systm.h>
  40 #include <sys/kernel.h>
  41 #include <sys/proc.h>
  42 #include <sys/filedesc.h>
  43 #include <sys/fcntl.h>
  44 #include <sys/mbuf.h>
  45 #include <sys/socket.h>
  46
  47 #include <netat/sysglue.h>
  48 #include <netat/appletalk.h>
  49 #include <netat/ddp.h>
  50 #include <netat/at_pcb.h>
  51 #include <netat/debug.h>
  52 #include <netat/adsp.h>
  53 #include <netat/adsp_internal.h>
  54
  55 /*
  56  * dspCLDeny
  57  *
  58  * INPUTS:
  59  *      --> ccbRefNum           refnum of connection listener
  60  *      --> remoteCID           connection identifier of remote connection end
  61  *      --> remoteAddress       internet address of remote connection end
  62  *
  63  * OUTPUTS:
  64  *      none
  65  *
  66  * ERRORS:
  67  *      errRefNum               bad connection refnum
  68  *      errState                not a connection listener
  69  *      errAborted              request aborted by a Remove call
  70  */
  71 int adspCLDeny(struct adspcmd *pb, CCBPtr sp)
  72 {
  73     gbuf_t *mp;
  74     ADSP_FRAMEPtr adspp;
  75     ADSP_OPEN_DATAPtr adspop;
  76
  77     if (sp == 0) {
  78         pb->ioResult = errRefNum;
  79         return EINVAL;
  80     }
  81     mp = gbuf_alloc(AT_WR_OFFSET + DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN,
  82                 PRI_LO);
  83     gbuf_rinc(mp,AT_WR_OFFSET);
  84     gbuf_wset(mp,DDPL_FRAME_LEN);
  85     adspp = (ADSP_FRAMEPtr)gbuf_wptr(mp);
  86     gbuf_winc(mp,ADSP_FRAME_LEN);
  87     bzero((caddr_t) gbuf_rptr(mp),DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN);
  88     adspp->descriptor = ADSP_CONTROL_BIT | ADSP_CTL_ODENY;
  89     adspop = (ADSP_OPEN_DATAPtr)gbuf_wptr(mp);
  90     gbuf_winc(mp,ADSP_OPEN_FRAME_LEN);
  91     UAS_ASSIGN_HTON(adspop->dstCID, pb->u.openParams.remoteCID);
  92     UAS_ASSIGN_HTON(adspop->version, 0x100);
  93     adsp_sendddp(sp, mp,
  94                  DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN,
  95                  (AddrUnion *)&pb->u.openParams.remoteAddress, DDP_ADSP);
  96     adspioc_ack(0, (gbuf_t *)pb->ioc, pb->gref);
  97     return 0;
  98 }