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wine/programs/winedevice/device.c

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/*
* Service process to load a kernel driver
*
* Copyright 2007 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winternl.h"
#include "winreg.h"
#include "winnls.h"
#include "winsvc.h"
#include "ddk/wdm.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(winedevice);
WINE_DECLARE_DEBUG_CHANNEL(relay);
extern NTSTATUS wine_ntoskrnl_main_loop( HANDLE stop_event );
static WCHAR *driver_name;
static SERVICE_STATUS_HANDLE service_handle;
static HKEY driver_hkey;
static HANDLE stop_event;
static DRIVER_OBJECT driver_obj;
static DRIVER_EXTENSION driver_extension;
/* find the LDR_MODULE corresponding to the driver module */
static LDR_MODULE *find_ldr_module( HMODULE module )
{
LIST_ENTRY *entry, *list = &NtCurrentTeb()->Peb->LdrData->InMemoryOrderModuleList;
for (entry = list->Flink; entry != list; entry = entry->Flink)
{
LDR_MODULE *ldr = CONTAINING_RECORD(entry, LDR_MODULE, InMemoryOrderModuleList);
if (ldr->BaseAddress == module) return ldr;
if (ldr->BaseAddress > (void *)module) break;
}
return NULL;
}
/* load the driver module file */
static HMODULE load_driver_module( const WCHAR *name )
{
const IMAGE_NT_HEADERS *nt;
size_t page_size = getpagesize();
int delta;
HMODULE module = LoadLibraryW( name );
if (!module) return NULL;
nt = RtlImageNtHeader( module );
if (!(delta = (char *)module - (char *)nt->OptionalHeader.ImageBase)) return module;
/* the loader does not apply relocations to non page-aligned binaries or executables,
* we have to do it ourselves */
if (nt->OptionalHeader.SectionAlignment < page_size ||
!(nt->FileHeader.Characteristics & IMAGE_FILE_DLL))
{
ULONG size;
DWORD old;
IMAGE_BASE_RELOCATION *rel, *end;
if ((rel = RtlImageDirectoryEntryToData( module, TRUE, IMAGE_DIRECTORY_ENTRY_BASERELOC, &size )))
{
WINE_TRACE( "%s: relocating from %p to %p\n",
wine_dbgstr_w(name), (char *)module - delta, module );
end = (IMAGE_BASE_RELOCATION *)((char *)rel + size);
while (rel < end && rel->SizeOfBlock)
{
void *page = (char *)module + rel->VirtualAddress;
VirtualProtect( page, page_size, PAGE_EXECUTE_READWRITE, &old );
rel = LdrProcessRelocationBlock( page, (rel->SizeOfBlock - sizeof(*rel)) / sizeof(USHORT),
(USHORT *)(rel + 1), delta );
if (old != PAGE_EXECUTE_READWRITE) VirtualProtect( page, page_size, old, NULL );
if (!rel) goto error;
}
}
}
return module;
error:
FreeLibrary( module );
return NULL;
}
/* call the driver init entry point */
static NTSTATUS init_driver( HMODULE module, UNICODE_STRING *keyname )
{
unsigned int i;
NTSTATUS status;
const IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module );
if (!nt->OptionalHeader.AddressOfEntryPoint) return STATUS_SUCCESS;
driver_obj.Size = sizeof(driver_obj);
driver_obj.DriverSection = find_ldr_module( module );
driver_obj.DriverInit = (PDRIVER_INITIALIZE)((char *)module + nt->OptionalHeader.AddressOfEntryPoint);
driver_obj.DriverExtension = &driver_extension;
driver_extension.DriverObject = &driver_obj;
driver_extension.ServiceKeyName = *keyname;
if (WINE_TRACE_ON(relay))
WINE_DPRINTF( "%04x:Call driver init %p (obj=%p,str=%s)\n", GetCurrentThreadId(),
driver_obj.DriverInit, &driver_obj, wine_dbgstr_w(keyname->Buffer) );
status = driver_obj.DriverInit( &driver_obj, keyname );
if (WINE_TRACE_ON(relay))
WINE_DPRINTF( "%04x:Ret driver init %p (obj=%p,str=%s) retval=%08x\n", GetCurrentThreadId(),
driver_obj.DriverInit, &driver_obj, wine_dbgstr_w(keyname->Buffer), status );
WINE_TRACE( "init done for %s obj %p\n", wine_dbgstr_w(driver_name), &driver_obj );
WINE_TRACE( "- DriverInit = %p\n", driver_obj.DriverInit );
WINE_TRACE( "- DriverStartIo = %p\n", driver_obj.DriverStartIo );
WINE_TRACE( "- DriverUnload = %p\n", driver_obj.DriverUnload );
for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++)
WINE_TRACE( "- MajorFunction[%d] = %p\n", i, driver_obj.MajorFunction[i] );
return status;
}
/* load the .sys module for a device driver */
static BOOL load_driver(void)
{
static const WCHAR driversW[] = {'\\','d','r','i','v','e','r','s','\\',0};
static const WCHAR postfixW[] = {'.','s','y','s',0};
static const WCHAR ntprefixW[] = {'\\','?','?','\\',0};
static const WCHAR ImagePathW[] = {'I','m','a','g','e','P','a','t','h',0};
static const WCHAR servicesW[] = {'\\','R','e','g','i','s','t','r','y',
'\\','M','a','c','h','i','n','e',
'\\','S','y','s','t','e','m',
'\\','C','u','r','r','e','n','t','C','o','n','t','r','o','l','S','e','t',
'\\','S','e','r','v','i','c','e','s','\\',0};
UNICODE_STRING keypath;
HMODULE module;
LPWSTR path = NULL, str;
DWORD type, size;
str = HeapAlloc( GetProcessHeap(), 0, sizeof(servicesW) + strlenW(driver_name)*sizeof(WCHAR) );
lstrcpyW( str, servicesW );
lstrcatW( str, driver_name );
if (RegOpenKeyW( HKEY_LOCAL_MACHINE, str + 18 /* skip \registry\machine */, &driver_hkey ))
{
WINE_ERR( "cannot open key %s, err=%u\n", wine_dbgstr_w(str), GetLastError() );
HeapFree( GetProcessHeap(), 0, str);
return FALSE;
}
RtlInitUnicodeString( &keypath, str );
/* read the executable path from memory */
size = 0;
if (!RegQueryValueExW( driver_hkey, ImagePathW, NULL, &type, NULL, &size ))
{
str = HeapAlloc( GetProcessHeap(), 0, size );
if (!RegQueryValueExW( driver_hkey, ImagePathW, NULL, &type, (LPBYTE)str, &size ))
{
size = ExpandEnvironmentStringsW(str,NULL,0);
path = HeapAlloc(GetProcessHeap(),0,size*sizeof(WCHAR));
ExpandEnvironmentStringsW(str,path,size);
}
HeapFree( GetProcessHeap(), 0, str );
if (!path) return FALSE;
}
else
{
/* default is to use the driver name + ".sys" */
WCHAR buffer[MAX_PATH];
GetSystemDirectoryW(buffer, MAX_PATH);
path = HeapAlloc(GetProcessHeap(),0,
(strlenW(buffer) + strlenW(driversW) + strlenW(driver_name) + strlenW(postfixW) + 1)
*sizeof(WCHAR));
lstrcpyW(path, buffer);
lstrcatW(path, driversW);
lstrcatW(path, driver_name);
lstrcatW(path, postfixW);
}
/* GameGuard uses an NT-style path name */
str = path;
if (!strncmpW( path, ntprefixW, 4 )) str += 4;
WINE_TRACE( "loading driver %s\n", wine_dbgstr_w(str) );
module = load_driver_module( str );
HeapFree( GetProcessHeap(), 0, path );
if (!module) return FALSE;
init_driver( module, &keypath );
return TRUE;
}
static DWORD WINAPI service_handler( DWORD ctrl, DWORD event_type, LPVOID event_data, LPVOID context )
{
SERVICE_STATUS status;
status.dwServiceType = SERVICE_WIN32;
status.dwControlsAccepted = SERVICE_ACCEPT_STOP;
status.dwWin32ExitCode = 0;
status.dwServiceSpecificExitCode = 0;
status.dwCheckPoint = 0;
status.dwWaitHint = 0;
switch(ctrl)
{
case SERVICE_CONTROL_STOP:
case SERVICE_CONTROL_SHUTDOWN:
WINE_TRACE( "shutting down %s\n", wine_dbgstr_w(driver_name) );
status.dwCurrentState = SERVICE_STOP_PENDING;
status.dwControlsAccepted = 0;
SetServiceStatus( service_handle, &status );
SetEvent( stop_event );
return NO_ERROR;
default:
WINE_FIXME( "got service ctrl %x for %s\n", ctrl, wine_dbgstr_w(driver_name) );
status.dwCurrentState = SERVICE_RUNNING;
SetServiceStatus( service_handle, &status );
return NO_ERROR;
}
}
static void WINAPI ServiceMain( DWORD argc, LPWSTR *argv )
{
SERVICE_STATUS status;
WINE_TRACE( "starting service %s\n", wine_dbgstr_w(driver_name) );
stop_event = CreateEventW( NULL, TRUE, FALSE, NULL );
service_handle = RegisterServiceCtrlHandlerExW( driver_name, service_handler, NULL );
if (!service_handle)
return;
status.dwServiceType = SERVICE_WIN32;
status.dwCurrentState = SERVICE_START_PENDING;
status.dwControlsAccepted = 0;
status.dwWin32ExitCode = 0;
status.dwServiceSpecificExitCode = 0;
status.dwCheckPoint = 0;
status.dwWaitHint = 10000;
SetServiceStatus( service_handle, &status );
if (load_driver())
{
status.dwCurrentState = SERVICE_RUNNING;
status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
SetServiceStatus( service_handle, &status );
wine_ntoskrnl_main_loop( stop_event );
}
else WINE_ERR( "driver %s failed to load\n", wine_dbgstr_w(driver_name) );
status.dwCurrentState = SERVICE_STOPPED;
status.dwControlsAccepted = 0;
SetServiceStatus( service_handle, &status );
WINE_TRACE( "service %s stopped\n", wine_dbgstr_w(driver_name) );
}
int wmain( int argc, WCHAR *argv[] )
{
SERVICE_TABLE_ENTRYW service_table[2];
if (!(driver_name = argv[1]))
{
WINE_ERR( "missing device name, winedevice isn't supposed to be run manually\n" );
return 1;
}
service_table[0].lpServiceName = argv[1];
service_table[0].lpServiceProc = ServiceMain;
service_table[1].lpServiceName = NULL;
service_table[1].lpServiceProc = NULL;
StartServiceCtrlDispatcherW( service_table );
return 0;
}
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