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83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
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// Common/MemoryLock.cpp
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#include "StdAfx.h"
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namespace NWindows {
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namespace NSecurity {
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#ifndef UNDER_CE
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#ifndef _UNICODE
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typedef BOOL (WINAPI * OpenProcessTokenP)(HANDLE ProcessHandle, DWORD DesiredAccess, PHANDLE TokenHandle);
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typedef BOOL (WINAPI * LookupPrivilegeValueP)(LPCTSTR lpSystemName, LPCTSTR lpName, PLUID lpLuid);
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typedef BOOL (WINAPI * AdjustTokenPrivilegesP)(HANDLE TokenHandle, BOOL DisableAllPrivileges,
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PTOKEN_PRIVILEGES NewState, DWORD BufferLength, PTOKEN_PRIVILEGES PreviousState,PDWORD ReturnLength);
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#endif
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#ifdef _UNICODE
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bool EnableLockMemoryPrivilege(
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#else
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static bool EnableLockMemoryPrivilege2(HMODULE hModule,
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#endif
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bool enable)
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{
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#ifndef _UNICODE
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if (hModule == NULL)
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return false;
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OpenProcessTokenP openProcessToken = (OpenProcessTokenP)GetProcAddress(hModule, "OpenProcessToken");
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LookupPrivilegeValueP lookupPrivilegeValue = (LookupPrivilegeValueP)GetProcAddress(hModule, "LookupPrivilegeValueA" );
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AdjustTokenPrivilegesP adjustTokenPrivileges = (AdjustTokenPrivilegesP)GetProcAddress(hModule, "AdjustTokenPrivileges");
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if (openProcessToken == NULL || adjustTokenPrivileges == NULL || lookupPrivilegeValue == NULL)
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return false;
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#endif
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HANDLE token;
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if (!
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#ifdef _UNICODE
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::OpenProcessToken
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#else
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openProcessToken
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#endif
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(::GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &token))
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return false;
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TOKEN_PRIVILEGES tp;
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bool res = false;
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if (
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#ifdef _UNICODE
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::LookupPrivilegeValue
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#else
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lookupPrivilegeValue
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#endif
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(NULL, SE_LOCK_MEMORY_NAME, &(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 (
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#ifdef _UNICODE
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::AdjustTokenPrivileges
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#else
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adjustTokenPrivileges
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#endif
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(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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return res;
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}
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#ifndef _UNICODE
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bool EnableLockMemoryPrivilege(bool enable)
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{
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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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bool res = EnableLockMemoryPrivilege2(hModule, enable);
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::FreeLibrary(hModule);
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return res;
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}
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#endif
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#endif
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}}
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