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/* dspCLListen.c 29 * 30 * From Mike Shoemaker v01.02 04/19/90 mbs 31 * Modified, April 9, 1997 by Tuyen Nguyen for MacOSX. 32 */ 33 34#include <sys/errno.h> 35#include <sys/types.h> 36#include <sys/param.h> 37#include <machine/spl.h> 38#include <sys/systm.h> 39#include <sys/kernel.h> 40#include <sys/proc.h> 41#include <sys/filedesc.h> 42#include <sys/fcntl.h> 43#include <sys/mbuf.h> 44#include <sys/socket.h> 45 46#include <netat/sysglue.h> 47#include <netat/appletalk.h> 48#include <netat/at_pcb.h> 49#include <netat/debug.h> 50#include <netat/adsp.h> 51#include <netat/adsp_internal.h> 52 53/* 54 * dspCLListen 55 * 56 * INPUTS: 57 * --> ccbRefNum refnum of connection end 58 * --> filterAddress filter for incoming open connection requests 59 * 60 * OUTPUTS: 61 * <-- remoteCID connection identifier of remote connection end 62 * <-- remoteAddress internet address of remote connection end 63 * <-- sendSeq initial send sequence number to use 64 * <-- sendWindow initial size of remote end's receive buffer 65 * <-- attnSendSeq initial attention send sequence number to use 66 * 67 * ERRORS: 68 * errRefNum bad connection refnum 69 * errState not a connection listener 70 * errAborted request aborted by a Remove call 71 */ 72int adspCLListen(sp, pb) /* (DSPPBPtr pb) */ 73 register CCBPtr sp; 74 register struct adspcmd *pb; 75{ 76 register struct adspcmd *clpb; 77 gbuf_t *mp; 78 79 if (sp == 0) { 80 pb->ioResult = errRefNum; 81 return EINVAL; 82 } 83 84 if (sp->state != sListening) { /* But this isn't a connection listener! */ 85 pb->ioResult = errState; 86 return EALREADY; 87 } 88 89 if ((mp = gbuf_copym(pb->mp))) { /* keep a copy of the parameter block */ 90 pb->ioResult = 1; /* not done */ 91 adspioc_ack(0, (gbuf_t *)pb->ioc, pb->gref); /* release user ioctl block */ 92 clpb = (struct adspcmd *)gbuf_rptr(mp); 93 clpb->ioc = 0; 94 clpb->mp = mp; 95 if (qAddToEnd((struct qlink **)&sp->opb, (struct qlink *)clpb)) /* Add to list of listeners */ 96 return EFAULT; /* bogus, but discriminate from other errors */ 97 } else { 98 pb->ioResult = errDSPQueueSize; 99 return ENOBUFS; 100 } 101 return 0; 102 103} 104