projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * The contents of this file constitute Original Code as defined in and | |
| 7 | * are subject to the Apple Public Source License Version 1.1 (the | |
| 8 | * "License"). You may not use this file except in compliance with the | |
| 9 | * License. Please obtain a copy of the License at | |
| 10 | * http://www.apple.com/publicsource and read it before using this file. | |
| 11 | * | |
| 12 | * This Original Code and all software distributed under the License are | |
| 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the | |
| 17 | * License for the specific language governing rights and limitations | |
| 18 | * under the License. | |
| 19 | * | |
| 20 | * @APPLE_LICENSE_HEADER_END@ | |
| 21 | */ | |
| 22 | /* dspCLListen.c | |
| 23 | * | |
| 24 | * From Mike Shoemaker v01.02 04/19/90 mbs | |
| 25 | * Modified, April 9, 1997 by Tuyen Nguyen for MacOSX. | |
| 26 | */ | |
| 27 | ||
| 28 | #include <sys/errno.h> | |
| 29 | #include <sys/types.h> | |
| 30 | #include <sys/param.h> | |
| 31 | #include <machine/spl.h> | |
| 32 | #include <sys/systm.h> | |
| 33 | #include <sys/kernel.h> | |
| 34 | #include <sys/proc.h> | |
| 35 | #include <sys/filedesc.h> | |
| 36 | #include <sys/fcntl.h> | |
| 37 | #include <sys/mbuf.h> | |
| 38 | #include <sys/socket.h> | |
| 39 | ||
| 40 | #include <netat/sysglue.h> | |
| 41 | #include <netat/appletalk.h> | |
| 42 | #include <netat/at_pcb.h> | |
| 43 | #include <netat/debug.h> | |
| 44 | #include <netat/adsp.h> | |
| 45 | #include <netat/adsp_internal.h> | |
| 46 | ||
| 47 | /* | |
| 48 | * dspCLListen | |
| 49 | * | |
| 50 | * INPUTS: | |
| 51 | * --> ccbRefNum refnum of connection end | |
| 52 | * --> filterAddress filter for incoming open connection requests | |
| 53 | * | |
| 54 | * OUTPUTS: | |
| 55 | * <-- remoteCID connection identifier of remote connection end | |
| 56 | * <-- remoteAddress internet address of remote connection end | |
| 57 | * <-- sendSeq initial send sequence number to use | |
| 58 | * <-- sendWindow initial size of remote end's receive buffer | |
| 59 | * <-- attnSendSeq initial attention send sequence number to use | |
| 60 | * | |
| 61 | * ERRORS: | |
| 62 | * errRefNum bad connection refnum | |
| 63 | * errState not a connection listener | |
| 64 | * errAborted request aborted by a Remove call | |
| 65 | */ | |
| 66 | int adspCLListen(sp, pb) /* (DSPPBPtr pb) */ | |
| 67 | register CCBPtr sp; | |
| 68 | register struct adspcmd *pb; | |
| 69 | { | |
| 70 | register struct adspcmd *clpb; | |
| 71 | gbuf_t *mp; | |
| 72 | int s; | |
| 73 | ||
| 74 | if (sp == 0) { | |
| 75 | pb->ioResult = errRefNum; | |
| 76 | return EINVAL; | |
| 77 | } | |
| 78 | ||
| 79 | if (sp->state != sListening) { /* But this isn't a connection listener! */ | |
| 80 | pb->ioResult = errState; | |
| 81 | return EALREADY; | |
| 82 | } | |
| 83 | ||
| 84 | if (mp = gbuf_copym(pb->mp)) { /* keep a copy of the parameter block */ | |
| 85 | pb->ioResult = 1; /* not done */ | |
| 86 | adspioc_ack(0, pb->ioc, pb->gref); /* release user ioctl block */ | |
| 87 | clpb = (struct adspcmd *)gbuf_rptr(mp); | |
| 88 | clpb->ioc = 0; | |
| 89 | clpb->mp = mp; | |
| 90 | ATDISABLE(s, sp->lock); | |
| 91 | if (qAddToEnd(&sp->opb, clpb)){ /* Add to list of listeners */ | |
| 92 | ATENABLE(s, sp->lock); | |
| 93 | return EFAULT; /* bogus, but discriminate from other errors */ | |
| 94 | } | |
| 95 | ATENABLE(s, sp->lock); | |
| 96 | } else { | |
| 97 | pb->ioResult = errDSPQueueSize; | |
| 98 | return ENOBUFS; | |
| 99 | } | |
| 100 | return 0; | |
| 101 | ||
| 102 | } |