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//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1992 - 1993.
//
// File: shell.c
//
// Contents: Microsoft Logon GUI DLL
//
// History: 7-14-94 RichardW Created
//
//----------------------------------------------------------------------------
#include "precomp.h"
#pragma hdrstop
BOOL
SetProcessQuotas(
PPROCESS_INFORMATION ProcessInformation,
PUSER_PROCESS_DATA UserProcessData
)
{
NTSTATUS Status = STATUS_SUCCESS;
BOOL Result;
QUOTA_LIMITS RequestedLimits;
RequestedLimits = UserProcessData->Quotas;
RequestedLimits.MinimumWorkingSetSize = 0;
RequestedLimits.MaximumWorkingSetSize = 0;
if (UserProcessData->Quotas.PagedPoolLimit != 0) {
Result = EnablePrivilege(SE_INCREASE_QUOTA_PRIVILEGE, TRUE);
if (!Result) {
DebugLog((DEB_ERROR, "failed to enable increase_quota privilege\n"));
return(FALSE);
}
Status = NtSetInformationProcess(
ProcessInformation->hProcess,
ProcessQuotaLimits,
(PVOID)&RequestedLimits,
(ULONG)sizeof(QUOTA_LIMITS)
);
Result = EnablePrivilege(SE_INCREASE_QUOTA_PRIVILEGE, FALSE);
if (!Result) {
DebugLog((DEB_ERROR, "failed to disable increase_quota privilege\n"));
}
}
#if DBG
if (!NT_SUCCESS(Status)) {
DebugLog((DEB_ERROR, "SetProcessQuotas failed. Status: 0x%lx\n", Status));
}
#endif //DBG
return (NT_SUCCESS(Status));
}
BOOL
ExecApplication(
IN LPTSTR pch,
IN LPTSTR Desktop,
IN PGLOBALS pGlobals,
IN PVOID pEnvironment,
IN DWORD Flags,
IN DWORD StartupFlags,
OUT PPROCESS_INFORMATION ProcessInformation
)
{
STARTUPINFO si;
BOOL Result, IgnoreResult;
HANDLE ImpersonationHandle;
//
// Initialize process startup info
//
si.cb = sizeof(STARTUPINFO);
si.lpReserved = pch;
si.lpTitle = pch;
si.dwX = si.dwY = si.dwXSize = si.dwYSize = 0L;
si.dwFlags = StartupFlags;
si.wShowWindow = SW_SHOW; // at least let the guy see it
si.lpReserved2 = NULL;
si.cbReserved2 = 0;
si.lpDesktop = Desktop;
//
// Impersonate the user so we get access checked correctly on
// the file we're trying to execute
//
ImpersonationHandle = ImpersonateUser(&pGlobals->UserProcessData, NULL);
if (ImpersonationHandle == NULL) {
DebugLog((DEB_ERROR, "ExecApplication failed to impersonate user\n"));
return(FALSE);
}
//
// Create the app suspended
//
DebugLog((DEB_TRACE, "About to create process of %ws, on desktop %ws\n", pch, Desktop));
Result = CreateProcessAsUser(
pGlobals->UserProcessData.UserToken,
NULL,
pch,
NULL,
NULL,
FALSE,
Flags | CREATE_SUSPENDED | CREATE_UNICODE_ENVIRONMENT,
pEnvironment,
NULL,
&si,
ProcessInformation);
IgnoreResult = StopImpersonating(ImpersonationHandle);
ASSERT(IgnoreResult);
return(Result);
}
BOOL
WINAPI
WlxStartApplication(
PVOID pWlxContext,
PWSTR pszDesktop,
PVOID pEnvironment,
PWSTR pszCmdLine
)
{
PROCESS_INFORMATION ProcessInformation;
BOOL bExec;
bExec = ExecApplication (pszCmdLine,
pszDesktop,
g_pGlobals,
pEnvironment,
0,
STARTF_USESHOWWINDOW,
&ProcessInformation);
if (!bExec) {
return(FALSE);
}
if (SetProcessQuotas(&ProcessInformation,
&g_pGlobals->UserProcessData)) {
ResumeThread(ProcessInformation.hThread);
} else {
TerminateProcess(ProcessInformation.hProcess,
ERROR_ACCESS_DENIED);
}
CloseHandle(ProcessInformation.hThread);
CloseHandle(ProcessInformation.hProcess);
return(TRUE);
}
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