| | 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 | /* |
| | 23 | * dspNewCID.c |
| | 24 | * |
| | 25 | * From v01.04 04/20/90 mbs |
| | 26 | * Modified, April 9, 1997 by Tuyen Nguyen for MacOSX. |
| | 27 | */ |
| | 28 | |
| | 29 | #include <sys/errno.h> |
| | 30 | #include <sys/types.h> |
| | 31 | #include <sys/param.h> |
| | 32 | #include <machine/spl.h> |
| | 33 | #include <sys/systm.h> |
| | 34 | #include <sys/kernel.h> |
| | 35 | #include <sys/proc.h> |
| | 36 | #include <sys/filedesc.h> |
| | 37 | #include <sys/fcntl.h> |
| | 38 | #include <sys/mbuf.h> |
| | 39 | #include <sys/socket.h> |
| | 40 | |
| | 41 | #include <netat/sysglue.h> |
| | 42 | #include <netat/appletalk.h> |
| | 43 | #include <netat/at_pcb.h> |
| | 44 | #include <netat/debug.h> |
| | 45 | #include <netat/adsp.h> |
| | 46 | #include <netat/adsp_internal.h> |
| | 47 | |
| | 48 | /* |
| | 49 | * dspNewCID |
| | 50 | * |
| | 51 | * INPUTS: |
| | 52 | * --> ccbRefNum refnum of connection end |
| | 53 | * |
| | 54 | * OUTPUTS: |
| | 55 | * <-- newCID new connection identifier |
| | 56 | * |
| | 57 | * ERRORS: |
| | 58 | * errRefNum bad connection refnum |
| | 59 | * errState connection is not closed |
| | 60 | */ |
| | 61 | int adspNewCID(sp, pb) /* (DSPPBPtr pb) */ |
| | 62 | CCBPtr sp; |
| | 63 | struct adspcmd *pb; |
| | 64 | { |
| | 65 | if (sp == 0) { |
| | 66 | pb->ioResult = errRefNum; |
| | 67 | return EINVAL; |
| | 68 | } |
| | 69 | |
| | 70 | if (sp->state != sClosed) { /* Can only assign to a closed connection */ |
| | 71 | pb->ioResult = errState; |
| | 72 | return EINVAL; |
| | 73 | } |
| | 74 | |
| | 75 | /* |
| | 76 | * Assign a unique connection ID to this ccb |
| | 77 | */ |
| | 78 | sp->locCID = pb->u.newCIDParams.newcid = NextCID(); |
| | 79 | |
| | 80 | pb->ioResult = 0; |
| | 81 | adspioc_ack(0, pb->ioc, pb->gref); |
| | 82 | return 0; |
| | 83 | } |
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