From: "Rose via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Rose <83477269+AtariDreams@users.noreply.github.com>,
Seija Kijin <doremylover123@gmail.com>
Subject: [PATCH v4] mingw: prefer RtlGetVersion over GetVersion
Date: Sat, 21 Jan 2023 20:04:22 +0000 [thread overview]
Message-ID: <pull.1438.v4.git.git.1674331462560.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1438.v3.git.git.1674330625069.gitgitgadget@gmail.com>
From: Seija Kijin <doremylover123@gmail.com>
The previous way is deprecated and returns
the wrong value in Windows 8 and up,
returning the manifest Windows data
as opposed to the actual Windows data.
RtlGetVersion is the correct way
to get the Windows version now.
Note: ntdll does not need to be
manually loaded into the runtime,
as this is the one special library
that is automatically loaded upon launch.
Signed-off-by: Seija Kijin <doremylover123@gmail.com>
---
mingw: prefer RtlGetVersion over GetVersion
GetVersion has its behavior changed in Windows 8 and above anyway, so
this is the right way to do it now.
The previous way returns the wrong value in Windows 8 and up, returning
the manifest Windows data as opposed to the actual Windows data.
Signed-off-by: Seija Kijin doremylover123@gmail.com
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1438%2FAtariDreams%2Fmingw-v4
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1438/AtariDreams/mingw-v4
Pull-Request: https://github.com/git/git/pull/1438
Range-diff vs v3:
1: 31f778a6b34 ! 1: 8293e868970 mingw: replace deprecated GetVersion with RtlGetVersion
@@ Metadata
Author: Seija Kijin <doremylover123@gmail.com>
## Commit message ##
- mingw: replace deprecated GetVersion with RtlGetVersion
+ mingw: prefer RtlGetVersion over GetVersion
The previous way is deprecated and returns
the wrong value in Windows 8 and up,
compat/mingw.c | 39 +++++++++++++++++++++++++++++++++------
1 file changed, 33 insertions(+), 6 deletions(-)
diff --git a/compat/mingw.c b/compat/mingw.c
index af397e68a1d..b1d75c93cfe 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -3081,15 +3081,42 @@ int wmain(int argc, const wchar_t **wargv)
return exit_status;
}
+/*
+ * for RtlGetVersion in uname
+ */
+
+typedef NTSTATUS(WINAPI *RtlGetVersionPtr)(PRTL_OSVERSIONINFOW);
+union winprocaddr {
+ FARPROC procaddr;
+ RtlGetVersionPtr procGetVersion;
+};
+
int uname(struct utsname *buf)
{
- unsigned v = (unsigned)GetVersion();
+ union winprocaddr RtlGetVersionInternal;
+ OSVERSIONINFOW version;
+
+ memset(&version, 0, sizeof(version));
+ version.dwOSVersionInfoSize = sizeof(version);
+
+ /* RtlGetVersion always gets the true Windows version, even when running
+ * under Windows's compatibility mode*/
+ RtlGetVersionInternal.procaddr =
+ GetProcAddress(GetModuleHandleW(L"ntdll.dll"), "RtlGetVersion");
+
+ if (RtlGetVersionInternal.procaddr) {
+ RtlGetVersionInternal.procGetVersion((PRTL_OSVERSIONINFOW)&version);
+ } else {
+ /* Should not happen, but just in case, fallback to deprecated
+ * GetVersionExW */
+ GetVersionExW(&version);
+ }
+
memset(buf, 0, sizeof(*buf));
xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows");
- xsnprintf(buf->release, sizeof(buf->release),
- "%u.%u", v & 0xff, (v >> 8) & 0xff);
- /* assuming NT variants only.. */
- xsnprintf(buf->version, sizeof(buf->version),
- "%u", (v >> 16) & 0x7fff);
+ xsnprintf(buf->release, sizeof(buf->release), "%lu.%lu",
+ version.dwMajorVersion, version.dwMinorVersion);
+ xsnprintf(buf->version, sizeof(buf->version), "%lu",
+ version.dwBuildNumber);
return 0;
}
base-commit: 904d404274fef6695c78a6b055edd184b72e2f9b
--
gitgitgadget
next prev parent reply other threads:[~2023-01-21 20:04 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-19 17:07 [PATCH] mingw: replace deprecated GetVersion with RtlGetVersion Rose via GitGitGadget
2023-01-19 17:36 ` [PATCH v2] " Rose via GitGitGadget
2023-01-21 19:50 ` [PATCH v3] " Rose via GitGitGadget
2023-01-21 20:04 ` Rose via GitGitGadget [this message]
2023-03-27 9:25 ` [PATCH v4] mingw: prefer RtlGetVersion over GetVersion Johannes Schindelin
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