public KernelResult Initialize(
ProcessCreationInfo creationInfo,
ReadOnlySpan <int> capabilities,
KResourceLimit resourceLimit,
MemoryRegion memRegion,
IProcessContextFactory contextFactory,
ThreadStart customThreadStart = null)
{
ResourceLimit = resourceLimit;
_memRegion = memRegion;
_contextFactory = contextFactory ?? new ProcessContextFactory();
_customThreadStart = customThreadStart;
ulong personalMmHeapSize = GetPersonalMmHeapSize((ulong)creationInfo.SystemResourcePagesCount, memRegion);
ulong codePagesCount = (ulong)creationInfo.CodePagesCount;
ulong neededSizeForProcess = personalMmHeapSize + codePagesCount * KMemoryManager.PageSize;
if (neededSizeForProcess != 0 && resourceLimit != null)
{
if (!resourceLimit.Reserve(LimitableResource.Memory, neededSizeForProcess))
{
return(KernelResult.ResLimitExceeded);
}
}
void CleanUpForError()
{
if (neededSizeForProcess != 0 && resourceLimit != null)
{
resourceLimit.Release(LimitableResource.Memory, neededSizeForProcess);
}
}
PersonalMmHeapPagesCount = (ulong)creationInfo.SystemResourcePagesCount;
KMemoryBlockAllocator memoryBlockAllocator;
if (PersonalMmHeapPagesCount != 0)
{
memoryBlockAllocator = new KMemoryBlockAllocator(PersonalMmHeapPagesCount * KMemoryManager.PageSize);
}
else
{
memoryBlockAllocator = creationInfo.Flags.HasFlag(ProcessCreationFlags.IsApplication)
? KernelContext.LargeMemoryBlockAllocator
: KernelContext.SmallMemoryBlockAllocator;
}
AddressSpaceType addrSpaceType = (AddressSpaceType)((int)(creationInfo.Flags & ProcessCreationFlags.AddressSpaceMask) >> (int)ProcessCreationFlags.AddressSpaceShift);
InitializeMemoryManager(creationInfo.Flags);
bool aslrEnabled = creationInfo.Flags.HasFlag(ProcessCreationFlags.EnableAslr);
ulong codeAddress = creationInfo.CodeAddress;
ulong codeSize = codePagesCount * KMemoryManager.PageSize;
KernelResult result = MemoryManager.InitializeForProcess(
addrSpaceType,
aslrEnabled,
!aslrEnabled,
memRegion,
codeAddress,
codeSize,
memoryBlockAllocator);
if (result != KernelResult.Success)
{
CleanUpForError();
return(result);
}
if (!MemoryManager.CanContain(codeAddress, codeSize, MemoryState.CodeStatic))
{
CleanUpForError();
return(KernelResult.InvalidMemRange);
}
result = MemoryManager.MapNewProcessCode(
codeAddress,
codePagesCount,
MemoryState.CodeStatic,
KMemoryPermission.None);
if (result != KernelResult.Success)
{
CleanUpForError();
return(result);
}
result = Capabilities.InitializeForUser(capabilities, MemoryManager);
if (result != KernelResult.Success)
{
CleanUpForError();
return(result);
}
Pid = KernelContext.NewProcessId();
if (Pid == -1 || (ulong)Pid < KernelConstants.InitialProcessId)
{
throw new InvalidOperationException($"Invalid Process Id {Pid}.");
}
result = ParseProcessInfo(creationInfo);
if (result != KernelResult.Success)
{
CleanUpForError();
}
return(result);
}
public KernelResult InitializeKip(
ProcessCreationInfo creationInfo,
ReadOnlySpan <int> capabilities,
KPageList pageList,
KResourceLimit resourceLimit,
MemoryRegion memRegion,
IProcessContextFactory contextFactory,
ThreadStart customThreadStart = null)
{
ResourceLimit = resourceLimit;
_memRegion = memRegion;
_contextFactory = contextFactory ?? new ProcessContextFactory();
_customThreadStart = customThreadStart;
AddressSpaceType addrSpaceType = (AddressSpaceType)((int)(creationInfo.Flags & ProcessCreationFlags.AddressSpaceMask) >> (int)ProcessCreationFlags.AddressSpaceShift);
InitializeMemoryManager(creationInfo.Flags);
bool aslrEnabled = creationInfo.Flags.HasFlag(ProcessCreationFlags.EnableAslr);
ulong codeAddress = creationInfo.CodeAddress;
ulong codeSize = (ulong)creationInfo.CodePagesCount * KMemoryManager.PageSize;
KMemoryBlockAllocator memoryBlockAllocator = creationInfo.Flags.HasFlag(ProcessCreationFlags.IsApplication)
? KernelContext.LargeMemoryBlockAllocator
: KernelContext.SmallMemoryBlockAllocator;
KernelResult result = MemoryManager.InitializeForProcess(
addrSpaceType,
aslrEnabled,
!aslrEnabled,
memRegion,
codeAddress,
codeSize,
memoryBlockAllocator);
if (result != KernelResult.Success)
{
return(result);
}
if (!MemoryManager.CanContain(codeAddress, codeSize, MemoryState.CodeStatic))
{
return(KernelResult.InvalidMemRange);
}
result = MemoryManager.MapPages(
codeAddress,
pageList,
MemoryState.CodeStatic,
KMemoryPermission.None);
if (result != KernelResult.Success)
{
return(result);
}
result = Capabilities.InitializeForKernel(capabilities, MemoryManager);
if (result != KernelResult.Success)
{
return(result);
}
Pid = KernelContext.NewKipId();
if (Pid == 0 || (ulong)Pid >= KernelConstants.InitialProcessId)
{
throw new InvalidOperationException($"Invalid KIP Id {Pid}.");
}
return(ParseProcessInfo(creationInfo));
}