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Annotation of XNU/bsd/netat/aurp_cfg.c, revision 1.1.1.1

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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