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