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Annotation of kernel/bsd/netat/adsp_NewCID.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: 
        !            26: #include       <adsp_local.h>
        !            27: 
        !            28: 
        !            29: /*
        !            30:  * dspNewCID
        !            31:  * 
        !            32:  * INPUTS:
        !            33:  *     --> ccbRefNum           refnum of connection end
        !            34:  *
        !            35:  * OUTPUTS:
        !            36:  *     <-- newCID              new connection identifier
        !            37:  *
        !            38:  * ERRORS:
        !            39:  *     errRefNum               bad connection refnum
        !            40:  *     errState                connection is not closed
        !            41:  */
        !            42: int adspNewCID(sp, pb)         /* (DSPPBPtr pb) */
        !            43:     CCBPtr             sp;
        !            44:     struct adspcmd *pb;
        !            45: {
        !            46:     OSErr err;
        !            47:        
        !            48:     if (sp == 0) {
        !            49:        pb->ioResult = errRefNum;
        !            50:        return EINVAL;
        !            51:     }
        !            52: 
        !            53:     if (sp->state != sClosed) {        /* Can only assign to a closed connection */
        !            54:        pb->ioResult = errState;
        !            55:        return EINVAL;
        !            56:     }
        !            57: 
        !            58:     /*
        !            59:      * Assign a unique connection ID to this ccb
        !            60:      */
        !            61:     sp->locCID = pb->u.newCIDParams.newcid = NextCID();
        !            62: 
        !            63:     pb->ioResult = 0;
        !            64:     adspioc_ack(0, pb->ioc, pb->gref);
        !            65:     return 0;
        !            66: }

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