1 /*	$NetBSD: sockstartup_w32.c,v 1.1.1.1 2011/04/13 18:15:43 elric Exp $	*/
2 
3 /***********************************************************************
4  * Copyright (c) 2009, Secure Endpoints Inc.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
11  * - Redistributions of source code must retain the above copyright
12  *   notice, this list of conditions and the following disclaimer.
13  *
14  * - Redistributions in binary form must reproduce the above copyright
15  *   notice, this list of conditions and the following disclaimer in
16  *   the documentation and/or other materials provided with the
17  *   distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
24  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
30  * OF THE POSSIBILITY OF SUCH DAMAGE.
31  *
32  **********************************************************************/
33 
34 #include<config.h>
35 
36 #include <krb5/roken.h>
37 
38 #ifndef _WIN32
39 #error Only implemented for Windows
40 #endif
41 
42 volatile LONG _startup_count = 0;
43 
44 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
45 rk_WSAStartup(void)
46 {
47     WSADATA wsad;
48 
49     if (!WSAStartup( MAKEWORD(2, 2), &wsad )) {
50 	if (wsad.wVersion != MAKEWORD(2, 2)) {
51 	    /* huh? We can't use 2.2? */
52 	    WSACleanup();
53 	    return -1;
54 	}
55 
56 	InterlockedIncrement(&_startup_count);
57 	return 0;
58     }
59 
60     return -1;
61 }
62 
63 
64 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
65 rk_WSACleanup(void)
66 {
67     LONG l;
68 
69     if ((l = InterlockedDecrement(&_startup_count)) < 0) {
70 	l = InterlockedIncrement(&_startup_count) - 1;
71     }
72 
73     if (l >= 0) {
74 	return WSACleanup();
75     }
76     return -1;
77 }
78