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Annotation of embedaddon/ntp/lib/isc/win32/win32os.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2004, 2007  Internet Systems Consortium, Inc. ("ISC")
        !             3:  * Copyright (C) 2002  Internet Software Consortium.
        !             4:  *
        !             5:  * Permission to use, copy, modify, and/or distribute this software for any
        !             6:  * purpose with or without fee is hereby granted, provided that the above
        !             7:  * copyright notice and this permission notice appear in all copies.
        !             8:  *
        !             9:  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
        !            10:  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
        !            11:  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
        !            12:  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
        !            13:  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
        !            14:  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
        !            15:  * PERFORMANCE OF THIS SOFTWARE.
        !            16:  */
        !            17: 
        !            18: /* $Id: win32os.c,v 1.5 2007/06/19 23:47:19 tbox Exp $ */
        !            19: 
        !            20: #include <windows.h>
        !            21: 
        !            22: #include <isc/win32os.h>
        !            23: 
        !            24: static BOOL bInit = FALSE;
        !            25: static OSVERSIONINFOEX osVer;
        !            26: 
        !            27: static void
        !            28: initialize_action(void) {
        !            29:        BOOL bSuccess;
        !            30: 
        !            31:        if (bInit)
        !            32:                return; 
        !            33:        /*
        !            34:         * NOTE: VC++ 6.0 gets this function declaration wrong
        !            35:         * so we compensate by casting the argument
        !            36:         */
        !            37:        osVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
        !            38:        bSuccess = GetVersionEx((OSVERSIONINFO *) &osVer);
        !            39: 
        !            40:        /*
        !            41:         * Versions of NT before NT4.0 SP6 did not return the
        !            42:         * extra info that the EX structure provides and returns
        !            43:         * a failure so we need to retry with the old structure.
        !            44:         */
        !            45:        if(!bSuccess) {
        !            46:                osVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
        !            47:                bSuccess = GetVersionEx((OSVERSIONINFO *) &osVer);
        !            48:        }
        !            49:        bInit = TRUE;
        !            50: }
        !            51: 
        !            52: unsigned int
        !            53: isc_win32os_majorversion(void) {
        !            54:        initialize_action();
        !            55:        return ((unsigned int)osVer.dwMajorVersion);
        !            56: }
        !            57: 
        !            58: unsigned int
        !            59: isc_win32os_minorversion(void) {
        !            60:        initialize_action();
        !            61:        return ((unsigned int)osVer.dwMinorVersion);
        !            62: }
        !            63: 
        !            64: unsigned int
        !            65: isc_win32os_servicepackmajor(void) {
        !            66:        initialize_action();
        !            67:        return ((unsigned int)osVer.wServicePackMajor);
        !            68: }
        !            69: 
        !            70: unsigned int
        !            71: isc_win32os_servicepackminor(void) {
        !            72:        initialize_action();
        !            73:        return ((unsigned int)osVer.wServicePackMinor);
        !            74: }
        !            75: 
        !            76: int
        !            77: isc_win32os_versioncheck(unsigned int major, unsigned int minor,
        !            78:                     unsigned int spmajor, unsigned int spminor) {
        !            79: 
        !            80:        initialize_action();
        !            81: 
        !            82:        if (major < isc_win32os_majorversion())
        !            83:                return (1);
        !            84:        if (major > isc_win32os_majorversion())
        !            85:                return (-1);
        !            86:        if (minor < isc_win32os_minorversion())
        !            87:                return (1);
        !            88:        if (minor > isc_win32os_minorversion())
        !            89:                return (-1);
        !            90:        if (spmajor < isc_win32os_servicepackmajor())
        !            91:                return (1);
        !            92:        if (spmajor > isc_win32os_servicepackmajor())
        !            93:                return (-1);
        !            94:        if (spminor < isc_win32os_servicepackminor())
        !            95:                return (1);
        !            96:        if (spminor > isc_win32os_servicepackminor())
        !            97:                return (-1);
        !            98: 
        !            99:        /* Exact */
        !           100:        return (0);
        !           101: }