third_party/heimdal/lib/roken/versionsupport.h

   1 /*
   2  * Copyright (c) 2018-2019, AuriStor, Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  *
  12  * - Redistributions in binary form must reproduce the above copyright
  13  *   notice, this list of conditions and the following disclaimer in
  14  *   the documentation and/or other materials provided with the
  15  *   distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  20  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  21  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  28  * OF THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  */
  31
  32 #ifndef _VERSIONSUPPORT_H_
  33 #define _VERSIONSUPPORT_H_ 1
  34
  35 /*
  36  * IsWindowsVersionOrGreater() is provided by Windows SDK 8.1 or greater.
  37  * As AuriStorFS supports building with SDK 7.0 and greater we must
  38  * provide our own.  VerifyVersionInfoW() is present on Windows XP and
  39  * later.
  40  */
  41
  42 #ifndef _WIN32_WINNT_WIN7
  43 #define _WIN32_WINNT_WIN7     0x0601
  44 #endif
  45
  46 #ifndef _WIN32_WINNT_WIN8
  47 #define _WIN32_WINNT_WIN8     0x0602
  48 #endif
  49
  50 #ifndef _WIN32_WINNT_WINBLUE
  51 #define _WIN32_WINNT_WINBLUE  0x0603
  52 #endif
  53
  54 /* Based upon VersionHelpers.h */
  55 FORCEINLINE BOOL
  56 IsWindowsVersionOrGreater(WORD wMajorVersion,
  57                           WORD wMinorVersion,
  58                           WORD wServicePackMajor)
  59 {
  60     OSVERSIONINFOEXW osvi;
  61     DWORDLONG        dwlConditionMask = 0;
  62
  63     dwlConditionMask = VerSetConditionMask(dwlConditionMask,
  64                                            VER_MAJORVERSION,
  65                                            VER_GREATER_EQUAL);
  66     dwlConditionMask = VerSetConditionMask(dwlConditionMask,
  67                                            VER_MINORVERSION,
  68                                            VER_GREATER_EQUAL);
  69     dwlConditionMask = VerSetConditionMask(dwlConditionMask,
  70                                            VER_SERVICEPACKMAJOR,
  71                                            VER_GREATER_EQUAL);
  72
  73     memset(&osvi, 0, sizeof(OSVERSIONINFOEXW));
  74     osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
  75     osvi.dwMajorVersion = wMajorVersion;
  76     osvi.dwMinorVersion = wMinorVersion;
  77     osvi.wServicePackMajor = wServicePackMajor;
  78
  79     return VerifyVersionInfoW(&osvi,
  80                               (VER_MAJORVERSION |
  81                                VER_MINORVERSION |
  82                                VER_SERVICEPACKMAJOR),
  83                               dwlConditionMask);
  84 }
  85
  86 FORCEINLINE BOOL
  87 IsWindowsXPOrGreater(VOID)
  88 {
  89     return IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_WINXP),
  90                                      LOBYTE(_WIN32_WINNT_WINXP),
  91                                      0);
  92 }
  93
  94 FORCEINLINE BOOL
  95 IsWindows7OrGreater(VOID)
  96 {
  97     return IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_WIN7),
  98                                      LOBYTE(_WIN32_WINNT_WIN7),
  99                                      0);
 100 }
 101
 102 FORCEINLINE BOOL
 103 IsWindows8OrGreater(VOID)
 104 {
 105     return IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_WIN8),
 106                                      LOBYTE(_WIN32_WINNT_WIN8),
 107                                      0);
 108 }
 109
 110 FORCEINLINE BOOL
 111 IsWindows8Point1OrGreater(VOID)
 112 {
 113     return IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_WINBLUE),
 114                                      LOBYTE(_WIN32_WINNT_WINBLUE),
 115                                      0);
 116 }
 117
 118 #define IS_WINDOWS_VERSION_OR_GREATER_CACHED(fn)                \
 119                                                                 \
 120 FORCEINLINE BOOL                                                \
 121 fn##Cached(VOID)                                                \
 122 {                                                               \
 123     static LONG lIsVersionOrGreater = -1;                       \
 124                                                                 \
 125     if (lIsVersionOrGreater == -1) {                            \
 126         LONG lResult = fn();                                    \
 127         InterlockedCompareExchangeRelease(&lIsVersionOrGreater, \
 128                                           lResult, -1);         \
 129     }                                                           \
 130                                                                 \
 131     return lIsVersionOrGreater == 1;                            \
 132 }
 133
 134 IS_WINDOWS_VERSION_OR_GREATER_CACHED(IsWindowsXPOrGreater)
 135 IS_WINDOWS_VERSION_OR_GREATER_CACHED(IsWindows7OrGreater)
 136 IS_WINDOWS_VERSION_OR_GREATER_CACHED(IsWindows8OrGreater)
 137 IS_WINDOWS_VERSION_OR_GREATER_CACHED(IsWindows8Point1OrGreater)
 138
 139 #endif /* _VERSIONSUPPORT_H_ */