windows-nt/Source/XPSP1/NT/base/pnp/umpnpmgr/main.c
2020-09-26 16:20:57 +08:00

208 lines
5 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*++
Copyright (c) 1995-2000 Microsoft Corporation
Module Name:
main.c
Abstract:
This module contains the startup and termination code for the
User-mode Plug-and-Play service.
Author:
Paula Tomlinson (paulat) 6-20-1995
Environment:
User mode only.
Revision History:
3-Mar-1995 paulat
Creation and initial implementation.
--*/
//
// includes
//
#include "precomp.h"
#include "umpnpi.h"
#include "umpnpdat.h"
//
// global data
//
HANDLE ghPnPHeap; // Private heap for PNP Manager
HANDLE ghInst; // Module handle
HKEY ghEnumKey = NULL; // Key to HKLM\System\CCC\Enum
HKEY ghServicesKey = NULL; // Key to HKLM\System\CCC\Services
HKEY ghClassKey = NULL; // key to HKLM\System\CCC\Class
HKEY ghPerHwIdKey = NULL; // key to HKLM\Software\Microsoft\Windows NT\CurrentVersion\PerHwIdStorage
LUID gLuidLoadDriverPrivilege; // LUID of LoadDriver privilege
LUID gLuidUndockPrivilege; // LUID of Undock privilege
CRITICAL_SECTION PnpSynchronousCall;
BOOL
DllMainCRTStartup(
PVOID hModule,
ULONG Reason,
PCONTEXT pContext
)
/*++
Routine Description:
This is the standard DLL entrypoint routine, called whenever a process
or thread attaches or detaches.
Arguments:
hModule - PVOID parameter that specifies the handle of the DLL
Reason - ULONG parameter that specifies the reason this entrypoint
was called (either PROCESS_ATTACH, PROCESS_DETACH,
THREAD_ATTACH, or THREAD_DETACH).
pContext - Reserved, not used.
Return value:
Returns true if initialization compeleted successfully, false is not.
--*/
{
UNREFERENCED_PARAMETER(pContext);
ghInst = (HANDLE)hModule;
switch (Reason) {
case DLL_PROCESS_ATTACH:
ghPnPHeap = HeapCreate(0, 65536, 0);
if (ghPnPHeap == NULL) {
KdPrintEx((DPFLTR_PNPMGR_ID,
DBGF_ERRORS,
"UMPNPMGR: Failed to create heap, error = %d\n",
GetLastError()));
ghPnPHeap = GetProcessHeap();
}
try {
InitializeCriticalSection(&PnpSynchronousCall);
} except(EXCEPTION_EXECUTE_HANDLER) {
//
// InitializeCriticalSection may raise STATUS_NO_MEMORY exception
//
return FALSE;
}
if (ghEnumKey == NULL) {
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, pszRegPathEnum, 0,
KEY_ALL_ACCESS, &ghEnumKey)
!= ERROR_SUCCESS) {
if (RegCreateKeyEx(HKEY_LOCAL_MACHINE, pszRegPathEnum,
0, NULL, REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS, NULL, &ghEnumKey,
NULL) != ERROR_SUCCESS) {
ghEnumKey = NULL;
}
}
}
if (ghServicesKey == NULL) {
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, pszRegPathServices, 0,
KEY_ALL_ACCESS, &ghServicesKey)
!= ERROR_SUCCESS) {
ghServicesKey = NULL;
}
}
if (ghClassKey == NULL) {
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, pszRegPathClass, 0,
KEY_ALL_ACCESS, &ghClassKey)
!= ERROR_SUCCESS) {
ghClassKey = NULL;
}
}
if(ghPerHwIdKey == NULL) {
if(ERROR_SUCCESS != RegCreateKeyEx(HKEY_LOCAL_MACHINE,
pszRegPathPerHwIdStorage,
0,
NULL,
REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS,
NULL,
&ghPerHwIdKey,
NULL)) {
ghPerHwIdKey = NULL;
}
}
//
// Initialize notification lists.
//
if (!InitNotification()) {
return FALSE;
}
break;
case DLL_PROCESS_DETACH:
if (ghEnumKey != NULL) {
RegCloseKey(ghEnumKey);
ghEnumKey = NULL;
}
if (ghServicesKey != NULL) {
RegCloseKey(ghServicesKey);
ghServicesKey = NULL;
}
if (ghClassKey != NULL) {
RegCloseKey(ghClassKey);
ghClassKey = NULL;
}
if (ghPerHwIdKey != NULL) {
RegCloseKey(ghPerHwIdKey);
ghPerHwIdKey = NULL;
}
try {
DeleteCriticalSection(&PnpSynchronousCall);
} except(EXCEPTION_EXECUTE_HANDLER) {
NOTHING;
}
break;
case DLL_THREAD_ATTACH:
case DLL_THREAD_DETACH:
break;
}
return TRUE;
} // DllMainCRTStartup