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launch.c
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launch.c
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#include "basedll.h"
#include "xlaunch.h"
#include <xboxp.h>
#include <dm.h>
#include <idexchan.h>
static const OBJECT_STRING g_DDosDevicePrefix = CONSTANT_OBJECT_STRING(OTEXT("\\??\\D:"));
static const CHAR g_szDVDDevicePrefix[] = "\\Device\\Cdrom0";
static const int g_cchDVDDevicePrefix = ARRAYSIZE(g_szDVDDevicePrefix) - 1;
extern PLAUNCH_DATA_PAGE *LaunchDataPage;
DWORD
WINAPI
XLaunchNewImage(
LPCSTR lpTitlePath,
PLAUNCH_DATA pLaunchData
)
{
//
// We require the path is NULL or D:\something
//
if ((NULL != lpTitlePath) &&
((('D' != lpTitlePath[0]) && ('d' != lpTitlePath[0])) ||
(':' != lpTitlePath[1]) ||
('\\' != lpTitlePath[2])))
{
XDBGWRN("XAPI", "XLaunchNewImage() ignoring invalid lpTitlePath (%s)", lpTitlePath);
return ERROR_INVALID_PARAMETER;
}
if (NULL == lpTitlePath)
{
//
// NULL lpTitlePath means reboot to the dashboard - don't preserve D: drive mapping
//
return XWriteTitleInfoAndReboot(NULL,
NULL,
(NULL != pLaunchData) ? LDT_LAUNCH_DASHBOARD : LDT_NONE,
XeImageHeader()->Certificate->TitleID,
pLaunchData);
}
else
{
NTSTATUS Status;
OBJECT_ATTRIBUTES Obja;
HANDLE LinkHandle;
OCHAR szLinkTarget[MAX_PATH * 2];
OCHAR szDDrivePath[MAX_LAUNCH_PATH];
OBJECT_STRING LinkTarget;
int cch;
szDDrivePath[0] = '\0';
//
// If the D: drive is mapped in some unique fashion, preserve that mapping
// across the reboot
//
InitializeObjectAttributes(&Obja,
(POBJECT_STRING) &g_DDosDevicePrefix,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtOpenSymbolicLinkObject(&LinkHandle, &Obja);
if (NT_SUCCESS(Status))
{
LinkTarget.Buffer = szLinkTarget;
LinkTarget.Length = 0;
LinkTarget.MaximumLength = sizeof(szLinkTarget);
Status = NtQuerySymbolicLinkObject(LinkHandle, &LinkTarget, NULL);
NtClose(LinkHandle);
}
if (NT_SUCCESS(Status))
{
lstrcpynA(szDDrivePath,
szLinkTarget,
min(ARRAYSIZE(szDDrivePath), (LinkTarget.Length / sizeof(CHAR)) + 1));
}
else
{
/* Got no path. The D: drive should always be mapped to something, so
* we're in trouble if we get here. Fall back on the DVD device
* path */
ASSERT(FALSE);
strcpy(szDDrivePath, g_szDVDDevicePrefix);
}
return XWriteTitleInfoAndReboot(&(lpTitlePath[3]),
szDDrivePath,
(NULL != pLaunchData) ? LDT_TITLE : LDT_NONE,
XeImageHeader()->Certificate->TitleID,
pLaunchData);
}
}
NTSTATUS
WINAPI
XWriteTitleInfoNoReboot(
PCOSTR pszLaunchPath,
PCOSTR pszDDrivePath,
DWORD dwLaunchDataType,
DWORD dwTitleId,
PLAUNCH_DATA pLaunchData
)
/*
*
* This is a private function, called by the reboot API and by the
* debugger
*
*/
{
LARGE_INTEGER ByteOffset;
PSTR pszOutput;
int cch;
if (NULL == *LaunchDataPage)
{
*LaunchDataPage = MmAllocateContiguousMemory(PAGE_SIZE);
}
if (NULL == *LaunchDataPage)
{
return STATUS_NO_MEMORY;
}
MmPersistContiguousMemory(*LaunchDataPage, PAGE_SIZE, TRUE);
#ifndef BUILD_FOR_XBDM
if (NULL == pszDDrivePath)
{
pszDDrivePath = g_szDVDDevicePrefix;
}
#endif
pszOutput = ((PLAUNCH_DATA_PAGE) *LaunchDataPage)->Header.szLaunchPath;
ASSERT(PAGE_SIZE == sizeof(LAUNCH_DATA_PAGE));
RtlZeroMemory(*LaunchDataPage, PAGE_SIZE);
((PLAUNCH_DATA_PAGE) *LaunchDataPage)->Header.dwLaunchDataType = dwLaunchDataType;
((PLAUNCH_DATA_PAGE) *LaunchDataPage)->Header.dwTitleId = dwTitleId;
if (dwLaunchDataType != LDT_NONE)
{
memcpy(((PLAUNCH_DATA_PAGE) *LaunchDataPage)->LaunchData,
pLaunchData,
sizeof(((PLAUNCH_DATA_PAGE) *LaunchDataPage)->LaunchData));
}
if (NULL != pszLaunchPath)
{
#ifdef BUILD_FOR_XBDM
if(!pszDDrivePath)
cch = 0;
else
#endif
{
lstrcpynA(pszOutput,
pszDDrivePath,
ARRAYSIZE(((PLAUNCH_DATA_PAGE) *LaunchDataPage)->Header.szLaunchPath) - 1);
cch = strlen(pszOutput);
pszOutput[cch++] = TITLE_PATH_DELIMITER;
}
lstrcpynA(&(pszOutput[cch]),
pszLaunchPath,
ARRAYSIZE(((PLAUNCH_DATA_PAGE) *LaunchDataPage)->Header.szLaunchPath) - (cch));
}
return STATUS_SUCCESS;
}
DWORD
WINAPI
XWriteTitleInfoAndReboot(
LPCSTR pszLaunchPath,
LPCSTR pszDDrivePath,
DWORD dwLaunchDataType,
DWORD dwTitleId,
PLAUNCH_DATA pLaunchData
)
{
NTSTATUS Status = XWriteTitleInfoNoReboot(pszLaunchPath,
pszDDrivePath,
dwLaunchDataType,
dwTitleId,
pLaunchData);
if (NT_SUCCESS(Status))
{
//
// Notify the debugger that we're about to reboot and then reboot
//
DmTell(DMTELL_REBOOT, NULL);
#if DBG
if (NULL != IdexChannelObject->CurrentIrp)
{
XDBGERR("XAPI", "I/O still in progress when XLaunchNewImage was called!");
}
#endif // DBG
HalReturnToFirmware(HalQuickRebootRoutine);
}
return RtlNtStatusToDosError(Status);
}
DWORD
WINAPI
XGetLaunchInfo(
OUT PDWORD pdwLaunchDataType,
OUT PLAUNCH_DATA pLaunchData
)
{
RIP_ON_NOT_TRUE("XGetLaunchInfo()", (pdwLaunchDataType != NULL));
RIP_ON_NOT_TRUE("XGetLaunchInfo()", (pLaunchData != NULL));
if ((*LaunchDataPage) &&
(((*LaunchDataPage)->Header.dwLaunchDataType == LDT_FROM_DASHBOARD) ||
((*LaunchDataPage)->Header.dwLaunchDataType == LDT_FROM_DEBUGGER_CMDLINE) ||
((*LaunchDataPage)->Header.dwTitleId == XeImageHeader()->Certificate->TitleID)))
{
PLAUNCH_DATA_PAGE pTemp;
*pdwLaunchDataType = (*LaunchDataPage)->Header.dwLaunchDataType;
memcpy(pLaunchData, (*LaunchDataPage)->LaunchData, sizeof(LAUNCH_DATA));
pTemp = *LaunchDataPage;
*LaunchDataPage = NULL;
MmFreeContiguousMemory(pTemp);
return ERROR_SUCCESS;
}
else
{
return ERROR_NOT_FOUND;
}
}