public void DecrementPagesReferenceCount(KMemoryManager manager)
{
foreach (var node in this)
{
manager.DecrementPagesReferenceCount(node.Address, node.PagesCount);
}
}
public KernelResult MapIntoProcess(
KMemoryManager memoryManager,
ulong address,
ulong size,
KProcess process,
MemoryPermission permission)
{
ulong pagesCountRounded = BitUtils.DivRoundUp(size, KMemoryManager.PageSize);
if (_pageList.GetPagesCount() != pagesCountRounded)
{
return(KernelResult.InvalidSize);
}
MemoryPermission expectedPermission = process.Pid == _ownerPid
? _ownerPermission
: _userPermission;
if (permission != expectedPermission)
{
return(KernelResult.InvalidPermission);
}
return(memoryManager.MapPages(address, _pageList, MemoryState.SharedMemory, permission));
}
public KernelResult UnmapFromProcess(
KMemoryManager memoryManager,
ulong address,
ulong size,
KProcess process)
{
ulong pagesCountRounded = BitUtils.DivRoundUp(size, KMemoryManager.PageSize);
if (_pageList.GetPagesCount() != pagesCountRounded)
{
return(KernelResult.InvalidSize);
}
return(memoryManager.UnmapPages(address, _pageList, MemoryState.SharedMemory));
}
public KScopedPageList(KMemoryManager manager, KPageList pageList)
{
_manager = manager;
_pageList = pageList;
pageList.IncrementPagesReferenceCount(manager);
}
