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Annotation of embedaddon/ntp/lib/isc/win32/win32os.c, revision 1.1.1.1

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: }