bsd/netat/adsp_CLDeny.c

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * CLDeny.c
  32  *
  33  * From Mike Shoemaker 9/6/90
  34  *   Modified, April 9, 1997 by Tuyen Nguyen for MacOSX.
  35  */
  36
  37 #include <sys/errno.h>
  38 #include <sys/types.h>
  39 #include <sys/param.h>
  40 #include <machine/spl.h>
  41 #include <sys/systm.h>
  42 #include <sys/kernel.h>
  43 #include <sys/proc.h>
  44 #include <sys/filedesc.h>
  45 #include <sys/fcntl.h>
  46 #include <sys/mbuf.h>
  47 #include <sys/socket.h>
  48
  49 #include <netat/sysglue.h>
  50 #include <netat/appletalk.h>
  51 #include <netat/ddp.h>
  52 #include <netat/at_pcb.h>
  53 #include <netat/debug.h>
  54 #include <netat/adsp.h>
  55 #include <netat/adsp_internal.h>
  56
  57 /*
  58  * dspCLDeny
  59  *
  60  * INPUTS:
  61  *      --> ccbRefNum           refnum of connection listener
  62  *      --> remoteCID           connection identifier of remote connection end
  63  *      --> remoteAddress       internet address of remote connection end
  64  *
  65  * OUTPUTS:
  66  *      none
  67  *
  68  * ERRORS:
  69  *      errRefNum               bad connection refnum
  70  *      errState                not a connection listener
  71  *      errAborted              request aborted by a Remove call
  72  */
  73 int adspCLDeny(struct adspcmd *pb, CCBPtr sp)
  74 {
  75     gbuf_t *mp;
  76     ADSP_FRAMEPtr adspp;
  77     ADSP_OPEN_DATAPtr adspop;
  78
  79     if (sp == 0) {
  80         pb->ioResult = errRefNum;
  81         return EINVAL;
  82     }
  83     mp = gbuf_alloc(AT_WR_OFFSET + DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN,
  84                 PRI_LO);
  85     gbuf_rinc(mp,AT_WR_OFFSET);
  86     gbuf_wset(mp,DDPL_FRAME_LEN);
  87     adspp = (ADSP_FRAMEPtr)gbuf_wptr(mp);
  88     gbuf_winc(mp,ADSP_FRAME_LEN);
  89     bzero((caddr_t) gbuf_rptr(mp),DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN);
  90     adspp->descriptor = ADSP_CONTROL_BIT | ADSP_CTL_ODENY;
  91     adspop = (ADSP_OPEN_DATAPtr)gbuf_wptr(mp);
  92     gbuf_winc(mp,ADSP_OPEN_FRAME_LEN);
  93     UAS_ASSIGN(adspop->dstCID, pb->u.openParams.remoteCID);
  94     UAS_ASSIGN(adspop->version, 0x100);
  95     adsp_sendddp(sp, mp,
  96                  DDPL_FRAME_LEN + ADSP_FRAME_LEN + ADSP_OPEN_FRAME_LEN,
  97                  &pb->u.openParams.remoteAddress, DDP_ADSP);
  98     adspioc_ack(0, pb->ioc, pb->gref);
  99     return 0;
 100 }