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Annotation of XNU/bsd/netat/aurp_cfg.c, revision 1.1

1.1     ! root        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:  *     Copyright (c) 1996 Apple Computer, Inc. 
        !            24:  *
        !            25:  *             Created April 8, 1996 by Tuyen Nguyen
        !            26:  *   Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
        !            27:  *
        !            28:  *     File: cfg.c
        !            29:  */
        !            30: #define RESOLVE_DBG
        !            31: #include <sys/errno.h>
        !            32: #include <sys/types.h>
        !            33: #include <sys/param.h>
        !            34: #include <machine/spl.h>
        !            35: #include <sys/systm.h>
        !            36: #include <sys/kernel.h>
        !            37: #include <sys/proc.h>
        !            38: #include <sys/filedesc.h>
        !            39: #include <sys/fcntl.h>
        !            40: #include <sys/mbuf.h>
        !            41: #include <sys/socket.h>
        !            42: #include <sys/socketvar.h>
        !            43: #include <net/if.h>
        !            44: 
        !            45: #include <netat/sysglue.h>
        !            46: #include <netat/appletalk.h>
        !            47: #include <netat/at_var.h>
        !            48: #include <netat/routing_tables.h>
        !            49: #include <netat/at_pcb.h>
        !            50: #include <netat/aurp.h>
        !            51: 
        !            52: extern atlock_t aurpgen_lock;
        !            53: static int aurp_inited = 0;
        !            54: static char aurp_minor_no[4];
        !            55: 
        !            56: int aurp_open(gref)
        !            57:        gref_t *gref;
        !            58: {
        !            59:        extern void AURPcmdx();
        !            60:        int i;
        !            61: 
        !            62:        if (!aurp_inited) {
        !            63:                aurp_inited = 1;
        !            64:                ATLOCKINIT(aurpgen_lock);
        !            65:        }
        !            66: 
        !            67:        for (i=1; i < sizeof(aurp_minor_no); i++) {
        !            68:                if (aurp_minor_no[i] == 0) {
        !            69:                        aurp_minor_no[i] = (char )i;
        !            70:                        break;
        !            71:                }
        !            72:        }
        !            73:        if (i == sizeof(aurp_minor_no))
        !            74:                return EAGAIN;
        !            75:        if (i == 1) {
        !            76:                aurp_gref = gref;
        !            77:                if (ddp_AURPfuncx(AURPCODE_REG, AURPcmdx, 0)) {
        !            78:                        aurp_gref = 0;
        !            79:                        aurp_minor_no[i] = 0;
        !            80:                        return EPROTO;
        !            81:                }
        !            82:        }
        !            83: 
        !            84:        gref->info = (void *)&aurp_minor_no[i];
        !            85:        return 0;
        !            86: }
        !            87: 
        !            88: int aurp_close(gref)
        !            89:        gref_t *gref;
        !            90: {
        !            91:        if (*(char *)gref->info == 1) {
        !            92:                aurp_gref = 0;
        !            93:                aurp_inited = 0;
        !            94:                ddp_AURPfuncx(AURPCODE_REG, 0, 0);
        !            95:        }
        !            96: 
        !            97:        *(char *)gref->info = 0;
        !            98:        gref->info = 0;
        !            99:        return 0;
        !           100: }

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