VOID
NTAPI
CcShutdownSystem(VOID)
{
ULONG i, Result;
NTSTATUS Status;
DPRINT1("CC: Shutdown\n");
for (i = 0; i < CACHE_NUM_SECTIONS; i++)
{
PNOCC_BCB Bcb = &CcCacheSections[i];
if (Bcb->SectionObject)
{
DPRINT1("Evicting #%02x %08x%08x %wZ\n",
i,
Bcb->FileOffset.u.HighPart,
Bcb->FileOffset.u.LowPart,
&MmGetFileObjectForSection((PROS_SECTION_OBJECT)Bcb->SectionObject)->FileName);
CcpFlushCache(Bcb->Map, NULL, 0, NULL, TRUE);
Bcb->Dirty = FALSE;
}
}
/* Evict all section pages */
Status = MiRosTrimCache(~0, 0, &Result);
DPRINT1("Done (Evicted %d, Status %x)\n", Result, Status);
}
PFILE_OBJECT
NTAPI
CcGetFileObjectFromBcb(PVOID Bcb)
{
PNOCC_BCB RealBcb = (PNOCC_BCB)Bcb;
DPRINT("BCB #%x\n", RealBcb - CcCacheSections);
return MmGetFileObjectForSection((PROS_SECTION_OBJECT)RealBcb->SectionObject);
}
NTSTATUS
PsReferenceProcessFilePointer (
IN PEPROCESS Process,
OUT PVOID *OutFileObject
)
/*++
Routine Description:
This routine returns a referenced pointer to the FilePointer of Process.
This is a rundown protected wrapper around MmGetFileObjectForSection.
Arguments:
Process - Supplies the process to query.
OutFileObject - Returns the file object backing the requested section if
success is returned.
Return Value:
NTSTATUS.
Environment:
Kernel mode, PASSIVE_LEVEL.
--*/
{
PFILE_OBJECT FileObject;
PAGED_CODE();
if (!ExAcquireRundownProtection (&Process->RundownProtect)) {
return STATUS_UNSUCCESSFUL;
}
if (Process->SectionObject == NULL) {
ExReleaseRundownProtection (&Process->RundownProtect);
return STATUS_UNSUCCESSFUL;
}
FileObject = MmGetFileObjectForSection ((PVOID)Process->SectionObject);
*OutFileObject = FileObject;
ObReferenceObject (FileObject);
ExReleaseRundownProtection (&Process->RundownProtect);
return STATUS_SUCCESS;
}
PFILE_OBJECT
NTAPI
CcGetFileObjectFromSectionPtrs(IN PSECTION_OBJECT_POINTERS SectionObjectPointer)
{
PFILE_OBJECT Result = NULL;
PNOCC_CACHE_MAP Map = SectionObjectPointer->SharedCacheMap;
CcpLock();
if (!IsListEmpty(&Map->AssociatedBcb))
{
PNOCC_BCB Bcb = CONTAINING_RECORD(Map->AssociatedBcb.Flink,
NOCC_BCB,
ThisFileList);
Result = MmGetFileObjectForSection((PROS_SECTION_OBJECT)Bcb->SectionObject);
}
CcpUnlock();
return Result;
}
