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