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34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
From d14a5ed33cdc95ff03c64f6fa574d07da5515825 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Michael=20M=C3=BCller?= <michael@fds-team.de>
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Date: Sat, 6 Feb 2016 21:23:10 +0100
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Subject: kernel32: Allow to pass NULL as old protection in VirtualProtect for
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Win9X.
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---
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dlls/kernel32/virtual.c | 9 ++++++++-
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1 file changed, 8 insertions(+), 1 deletion(-)
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diff --git a/dlls/kernel32/virtual.c b/dlls/kernel32/virtual.c
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index 03ef38c..e164151 100644
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--- a/dlls/kernel32/virtual.c
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+++ b/dlls/kernel32/virtual.c
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@@ -235,7 +235,14 @@ BOOL WINAPI VirtualProtect( LPVOID addr, SIZE_T size, DWORD new_prot, LPDWORD ol
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BOOL WINAPI VirtualProtectEx( HANDLE process, LPVOID addr, SIZE_T size,
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DWORD new_prot, LPDWORD old_prot )
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{
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- NTSTATUS status = NtProtectVirtualMemory( process, &addr, &size, new_prot, old_prot );
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+ NTSTATUS status;
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+ DWORD dummy;
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+
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+ /* Win9x allows to pass NULL as old_prot while it fails on NT */
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+ if (!old_prot && (GetVersion() & 0x80000000))
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+ old_prot = &dummy;
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+
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+ status = NtProtectVirtualMemory( process, &addr, &size, new_prot, old_prot );
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if (status) SetLastError( RtlNtStatusToDosError(status) );
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return !status;
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}
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--
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2.7.0
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