mirror of
https://github.com/holub/mame
synced 2025-04-28 19:14:55 +03:00
73 lines
1.9 KiB
C++
73 lines
1.9 KiB
C++
// Windows/MemoryLock.cpp
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#include "StdAfx.h"
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#include "MemoryLock.h"
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namespace NWindows {
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namespace NSecurity {
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#ifndef UNDER_CE
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#ifdef _UNICODE
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#define MY_FUNC_SELECT(f) :: f
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#else
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#define MY_FUNC_SELECT(f) my_ ## f
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extern "C" {
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typedef BOOL (WINAPI * Func_OpenProcessToken)(HANDLE ProcessHandle, DWORD DesiredAccess, PHANDLE TokenHandle);
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typedef BOOL (WINAPI * Func_LookupPrivilegeValue)(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid);
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typedef BOOL (WINAPI * Func_AdjustTokenPrivileges)(HANDLE TokenHandle, BOOL DisableAllPrivileges,
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PTOKEN_PRIVILEGES NewState, DWORD BufferLength, PTOKEN_PRIVILEGES PreviousState, PDWORD ReturnLength);
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}
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#define GET_PROC_ADDR(fff, name) Func_ ## fff my_ ## fff = (Func_ ## fff)GetProcAddress(hModule, name)
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#endif
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bool EnablePrivilege(LPCTSTR privilegeName, bool enable)
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{
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bool res = false;
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#ifndef _UNICODE
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HMODULE hModule = ::LoadLibrary(TEXT("Advapi32.dll"));
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if (hModule == NULL)
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return false;
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GET_PROC_ADDR(OpenProcessToken, "OpenProcessToken");
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GET_PROC_ADDR(LookupPrivilegeValue, "LookupPrivilegeValueA");
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GET_PROC_ADDR(AdjustTokenPrivileges, "AdjustTokenPrivileges");
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if (my_OpenProcessToken &&
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my_AdjustTokenPrivileges &&
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my_LookupPrivilegeValue)
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#endif
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{
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HANDLE token;
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if (MY_FUNC_SELECT(OpenProcessToken)(::GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &token))
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{
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TOKEN_PRIVILEGES tp;
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if (MY_FUNC_SELECT(LookupPrivilegeValue)(NULL, privilegeName, &(tp.Privileges[0].Luid)))
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{
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tp.PrivilegeCount = 1;
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tp.Privileges[0].Attributes = (enable ? SE_PRIVILEGE_ENABLED : 0);
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if (MY_FUNC_SELECT(AdjustTokenPrivileges)(token, FALSE, &tp, 0, NULL, NULL))
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res = (GetLastError() == ERROR_SUCCESS);
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}
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::CloseHandle(token);
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}
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}
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#ifndef _UNICODE
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::FreeLibrary(hModule);
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#endif
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return res;
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}
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#endif
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}}
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