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https://github.com/reactos/reactos.git
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32e9710fd1
OBP_SYSTEM_PROCESS_QUOTA is a macro that'll be used as a way to assign a dummy quota block to system processes, as we mustn't do anything to those in case the Object Manager is charging or returning pool quotas.
660 lines
13 KiB
C
660 lines
13 KiB
C
/*
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* PROJECT: ReactOS Kernel
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: ntoskrnl/include/internal/ob.h
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* PURPOSE: Internal header for the Object Manager
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* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
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*/
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//
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// Define this if you want debugging support
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//
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#define _OB_DEBUG_ 0x00
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//
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// These define the Debug Masks Supported
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//
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#define OB_HANDLE_DEBUG 0x01
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#define OB_NAMESPACE_DEBUG 0x02
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#define OB_SECURITY_DEBUG 0x04
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#define OB_REFERENCE_DEBUG 0x08
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#define OB_CALLBACK_DEBUG 0x10
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//
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// Debug/Tracing support
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//
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#if _OB_DEBUG_
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#ifdef NEW_DEBUG_SYSTEM_IMPLEMENTED // enable when Debug Filters are implemented
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#define OBTRACE DbgPrintEx
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#else
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#define OBTRACE(x, ...) \
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if (x & ObpTraceLevel) DbgPrint(__VA_ARGS__)
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#endif
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#else
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#define OBTRACE(x, fmt, ...) DPRINT(fmt, ##__VA_ARGS__)
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#endif
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//
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// Mask to detect GENERIC_XXX access masks being used
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//
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#define GENERIC_ACCESS \
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(GENERIC_READ | \
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GENERIC_WRITE | \
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GENERIC_EXECUTE | \
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GENERIC_ALL)
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//
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// Handle Bit Flags
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//
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#define OBJ_PROTECT_CLOSE 0x01
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//#define OBJ_INHERIT 0x02
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#define OBJ_AUDIT_OBJECT_CLOSE 0x04
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#define OBJ_HANDLE_ATTRIBUTES (OBJ_PROTECT_CLOSE |\
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OBJ_INHERIT | \
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OBJ_AUDIT_OBJECT_CLOSE)
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//
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// Handle Access Protection Close Flag
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//
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#define ObpAccessProtectCloseBit 0x02000000L
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//
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// System Process Quota Block
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//
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#define OBP_SYSTEM_PROCESS_QUOTA ((PEPROCESS_QUOTA_BLOCK)(ULONG_PTR)1)
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//
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// Identifies a Kernel Handle
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//
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#ifdef _WIN64
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#define KERNEL_HANDLE_FLAG 0xFFFFFFFF80000000ULL
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#else
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#define KERNEL_HANDLE_FLAG 0x80000000
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#endif
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#define ObpIsKernelHandle(Handle, ProcessorMode) \
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((((ULONG_PTR)(Handle) & KERNEL_HANDLE_FLAG) == KERNEL_HANDLE_FLAG) && \
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((ProcessorMode) == KernelMode) && \
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((Handle) != NtCurrentProcess()) && \
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((Handle) != NtCurrentThread()))
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//
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// Converts to and from a Kernel Handle to a normal handle
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//
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#define ObKernelHandleToHandle(Handle) \
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(HANDLE)((ULONG_PTR)(Handle) & ~KERNEL_HANDLE_FLAG)
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#define ObMarkHandleAsKernelHandle(Handle) \
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(HANDLE)((ULONG_PTR)(Handle) | KERNEL_HANDLE_FLAG)
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//
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// Converts from an EXHANDLE object to a POBJECT_HEADER
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//
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#define ObpGetHandleObject(x) \
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((POBJECT_HEADER)((ULONG_PTR)x->Object & ~OBJ_HANDLE_ATTRIBUTES))
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//
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// Recovers the security descriptor from a cached security descriptor header
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//
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#define ObpGetHeaderForSd(x) \
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CONTAINING_RECORD((x), SECURITY_DESCRIPTOR_HEADER, SecurityDescriptor)
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//
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// Recovers the security descriptor from a cached security descriptor list entry
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//
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#define ObpGetHeaderForEntry(x) \
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CONTAINING_RECORD((x), SECURITY_DESCRIPTOR_HEADER, Link)
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//
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// Context Structures for Ex*Handle Callbacks
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//
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typedef struct _OBP_SET_HANDLE_ATTRIBUTES_CONTEXT
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{
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KPROCESSOR_MODE PreviousMode;
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OBJECT_HANDLE_ATTRIBUTE_INFORMATION Information;
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} OBP_SET_HANDLE_ATTRIBUTES_CONTEXT, *POBP_SET_HANDLE_ATTRIBUTES_CONTEXT;
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typedef struct _OBP_CLOSE_HANDLE_CONTEXT
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{
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PHANDLE_TABLE HandleTable;
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KPROCESSOR_MODE AccessMode;
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} OBP_CLOSE_HANDLE_CONTEXT, *POBP_CLOSE_HANDLE_CONTEXT;
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typedef struct _OBP_FIND_HANDLE_DATA
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{
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POBJECT_HEADER ObjectHeader;
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POBJECT_TYPE ObjectType;
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POBJECT_HANDLE_INFORMATION HandleInformation;
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} OBP_FIND_HANDLE_DATA, *POBP_FIND_HANDLE_DATA;
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//
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// Cached Security Descriptor Header
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//
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typedef struct _SECURITY_DESCRIPTOR_HEADER
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{
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LIST_ENTRY Link;
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ULONG RefCount;
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ULONG FullHash;
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QUAD SecurityDescriptor;
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} SECURITY_DESCRIPTOR_HEADER, *PSECURITY_DESCRIPTOR_HEADER;
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//
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// Cached Security Descriptor List
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//
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typedef struct _OB_SD_CACHE_LIST
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{
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EX_PUSH_LOCK PushLock;
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LIST_ENTRY Head;
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} OB_SD_CACHE_LIST, *POB_SD_CACHE_LIST;
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//
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// Structure for quick-compare of a DOS Device path
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//
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typedef union
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{
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WCHAR Name[sizeof(ULARGE_INTEGER) / sizeof(WCHAR)];
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ULARGE_INTEGER Alignment;
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} ALIGNEDNAME;
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//
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// Private Temporary Buffer for Lookup Routines
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//
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#define TAG_OB_TEMP_STORAGE 'tSbO'
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typedef struct _OB_TEMP_BUFFER
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{
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ACCESS_STATE LocalAccessState;
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OBJECT_CREATE_INFORMATION ObjectCreateInfo;
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OBP_LOOKUP_CONTEXT LookupContext;
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AUX_ACCESS_DATA AuxData;
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} OB_TEMP_BUFFER, *POB_TEMP_BUFFER;
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//
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// Startup and Shutdown Functions
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//
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CODE_SEG("INIT")
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BOOLEAN
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NTAPI
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ObInitSystem(
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VOID
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);
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VOID
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NTAPI
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ObShutdownSystem(
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VOID
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);
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//
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// Directory Namespace Functions
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//
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BOOLEAN
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NTAPI
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ObpDeleteEntryDirectory(
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IN POBP_LOOKUP_CONTEXT Context
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);
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BOOLEAN
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NTAPI
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ObpInsertEntryDirectory(
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IN POBJECT_DIRECTORY Parent,
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IN POBP_LOOKUP_CONTEXT Context,
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IN POBJECT_HEADER ObjectHeader
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);
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PVOID
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NTAPI
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ObpLookupEntryDirectory(
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IN POBJECT_DIRECTORY Directory,
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IN PUNICODE_STRING Name,
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IN ULONG Attributes,
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IN UCHAR SearchShadow,
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IN POBP_LOOKUP_CONTEXT Context
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);
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//
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// Symbolic Link Functions
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//
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VOID
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NTAPI
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ObpDeleteSymbolicLink(
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IN PVOID ObjectBody
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);
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NTSTATUS
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NTAPI
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ObpParseSymbolicLink(
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IN PVOID ParsedObject,
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IN PVOID ObjectType,
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IN OUT PACCESS_STATE AccessState,
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IN KPROCESSOR_MODE AccessMode,
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IN ULONG Attributes,
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IN OUT PUNICODE_STRING FullPath,
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IN OUT PUNICODE_STRING RemainingName,
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IN OUT PVOID Context OPTIONAL,
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IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
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OUT PVOID *NextObject
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);
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VOID
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NTAPI
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ObpCreateSymbolicLinkName(
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IN POBJECT_SYMBOLIC_LINK SymbolicLink
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);
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VOID
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NTAPI
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ObpDeleteSymbolicLinkName(
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IN POBJECT_SYMBOLIC_LINK SymbolicLink
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);
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//
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// Process/Handle Table Init/Rundown
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//
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NTSTATUS
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NTAPI
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ObInitProcess(
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IN PEPROCESS Parent OPTIONAL,
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IN PEPROCESS Process
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);
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PHANDLE_TABLE
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NTAPI
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ObReferenceProcessHandleTable(
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IN PEPROCESS Process
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);
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VOID
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NTAPI
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ObDereferenceProcessHandleTable(
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IN PEPROCESS Process
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);
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VOID
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NTAPI
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ObKillProcess(
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IN PEPROCESS Process
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);
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//
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// Object Lookup Functions
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//
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NTSTATUS
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NTAPI
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ObpLookupObjectName(
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IN HANDLE RootHandle OPTIONAL,
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IN OUT PUNICODE_STRING ObjectName,
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IN ULONG Attributes,
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IN POBJECT_TYPE ObjectType,
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IN KPROCESSOR_MODE AccessMode,
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IN OUT PVOID ParseContext,
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IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
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IN PVOID InsertObject OPTIONAL,
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IN OUT PACCESS_STATE AccessState,
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OUT POBP_LOOKUP_CONTEXT LookupContext,
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OUT PVOID *FoundObject
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);
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//
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// Object Attribute Functions
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//
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BOOLEAN
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NTAPI
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ObpSetHandleAttributes(
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IN OUT PHANDLE_TABLE_ENTRY HandleTableEntry,
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IN ULONG_PTR Context
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);
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NTSTATUS
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NTAPI
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ObQueryDeviceMapInformation(
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_In_opt_ PEPROCESS Process,
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_Out_ PPROCESS_DEVICEMAP_INFORMATION DeviceMapInfo,
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_In_ ULONG Flags
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);
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//
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// Object Lifetime Functions
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//
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VOID
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NTAPI
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ObpDeleteObject(
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IN PVOID Object,
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IN BOOLEAN CalledFromWorkerThread
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);
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LONG
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FASTCALL
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ObDereferenceObjectEx(
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IN PVOID Object,
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IN LONG Count
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);
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LONG
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FASTCALL
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ObReferenceObjectEx(
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IN PVOID Object,
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IN LONG Count
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);
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BOOLEAN
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FASTCALL
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ObReferenceObjectSafe(
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IN PVOID Object
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);
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VOID
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NTAPI
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ObpReapObject(
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IN PVOID Unused
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);
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VOID
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FASTCALL
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ObpSetPermanentObject(
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IN PVOID ObjectBody,
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IN BOOLEAN Permanent
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);
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VOID
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NTAPI
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ObpDeleteNameCheck(
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IN PVOID Object
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);
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VOID
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NTAPI
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ObClearProcessHandleTable(
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IN PEPROCESS Process
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);
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NTSTATUS
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NTAPI
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ObDuplicateObject(
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IN PEPROCESS SourceProcess,
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IN HANDLE SourceHandle,
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IN PEPROCESS TargetProcess OPTIONAL,
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IN PHANDLE TargetHandle OPTIONAL,
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IN ACCESS_MASK DesiredAccess,
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IN ULONG HandleAttributes,
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IN ULONG Options,
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IN KPROCESSOR_MODE PreviousMode
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);
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VOID
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NTAPI
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ObFreeObjectCreateInfoBuffer(
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IN POBJECT_CREATE_INFORMATION ObjectCreateInfo
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);
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VOID
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NTAPI
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ObpFreeObjectNameBuffer(
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IN PUNICODE_STRING Name
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);
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VOID
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NTAPI
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ObpDeleteObjectType(
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IN PVOID Object
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);
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NTSTATUS
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NTAPI
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ObReferenceFileObjectForWrite(
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IN HANDLE Handle,
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IN KPROCESSOR_MODE AccessMode,
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OUT PFILE_OBJECT *FileObject,
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OUT POBJECT_HANDLE_INFORMATION HandleInformation
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);
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//
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// DOS Devices Functions
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//
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NTSTATUS
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NTAPI
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ObSetDeviceMap(
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IN PEPROCESS Process,
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IN HANDLE DirectoryHandle
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);
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NTSTATUS
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NTAPI
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ObSetDirectoryDeviceMap(OUT PDEVICE_MAP * DeviceMap,
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IN HANDLE DirectoryHandle
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);
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VOID
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NTAPI
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ObDereferenceDeviceMap(
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IN PEPROCESS Process
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);
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VOID
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FASTCALL
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ObfDereferenceDeviceMap(
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IN PDEVICE_MAP DeviceMap
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);
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VOID
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NTAPI
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ObInheritDeviceMap(
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IN PEPROCESS Parent,
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IN PEPROCESS Process
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);
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CODE_SEG("INIT")
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NTSTATUS
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NTAPI
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ObpCreateDosDevicesDirectory(
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VOID
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);
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ULONG
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NTAPI
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ObIsLUIDDeviceMapsEnabled(
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VOID
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);
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PDEVICE_MAP
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NTAPI
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ObpReferenceDeviceMap(
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VOID
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);
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//
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// Security descriptor cache functions
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//
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CODE_SEG("INIT")
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NTSTATUS
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NTAPI
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ObpInitSdCache(
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VOID
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);
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PSECURITY_DESCRIPTOR
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NTAPI
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ObpReferenceSecurityDescriptor(
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IN POBJECT_HEADER ObjectHeader
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);
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//
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// Object Security Routines
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//
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BOOLEAN
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NTAPI
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ObCheckObjectAccess(
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IN PVOID Object,
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IN OUT PACCESS_STATE AccessState,
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IN BOOLEAN LockHeld,
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IN KPROCESSOR_MODE AccessMode,
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OUT PNTSTATUS ReturnedStatus
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);
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BOOLEAN
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NTAPI
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ObCheckCreateObjectAccess(
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IN PVOID Object,
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IN ACCESS_MASK CreateAccess,
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IN PACCESS_STATE AccessState,
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IN PUNICODE_STRING ComponentName,
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IN BOOLEAN LockHeld,
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IN KPROCESSOR_MODE AccessMode,
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OUT PNTSTATUS AccessStatus
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);
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BOOLEAN
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NTAPI
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ObpCheckTraverseAccess(
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IN PVOID Object,
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IN ACCESS_MASK TraverseAccess,
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IN PACCESS_STATE AccessState OPTIONAL,
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IN BOOLEAN LockHeld,
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IN KPROCESSOR_MODE AccessMode,
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OUT PNTSTATUS AccessStatus
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);
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BOOLEAN
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NTAPI
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ObpCheckObjectReference(
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IN PVOID Object,
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IN OUT PACCESS_STATE AccessState,
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IN BOOLEAN LockHeld,
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IN KPROCESSOR_MODE AccessMode,
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OUT PNTSTATUS AccessStatus
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);
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//
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// Default Object Security Callback Routines
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//
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NTSTATUS
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NTAPI
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ObAssignObjectSecurityDescriptor(
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IN PVOID Object,
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IN PSECURITY_DESCRIPTOR SecurityDescriptor OPTIONAL,
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IN POOL_TYPE PoolType
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);
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NTSTATUS
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NTAPI
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ObDeassignSecurity(
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IN OUT PSECURITY_DESCRIPTOR *SecurityDescriptor
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);
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NTSTATUS
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NTAPI
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ObQuerySecurityDescriptorInfo(
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IN PVOID Object,
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IN PSECURITY_INFORMATION SecurityInformation,
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OUT PSECURITY_DESCRIPTOR SecurityDescriptor,
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IN OUT PULONG Length,
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IN PSECURITY_DESCRIPTOR *OutputSecurityDescriptor
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);
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NTSTATUS
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NTAPI
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ObSetSecurityDescriptorInfo(
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IN PVOID Object,
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IN PSECURITY_INFORMATION SecurityInformation,
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IN OUT PSECURITY_DESCRIPTOR SecurityDescriptor,
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IN OUT PSECURITY_DESCRIPTOR *OutputSecurityDescriptor,
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IN POOL_TYPE PoolType,
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IN PGENERIC_MAPPING GenericMapping
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);
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//
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// Executive Fast Referencing Functions
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//
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VOID
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FASTCALL
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ObInitializeFastReference(
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IN PEX_FAST_REF FastRef,
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IN PVOID Object
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);
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PVOID
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FASTCALL
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ObFastReplaceObject(
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IN PEX_FAST_REF FastRef,
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IN PVOID Object
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);
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PVOID
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FASTCALL
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ObFastReferenceObject(
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IN PEX_FAST_REF FastRef
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);
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PVOID
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FASTCALL
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ObFastReferenceObjectLocked(
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IN PEX_FAST_REF FastRef
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);
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VOID
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FASTCALL
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ObFastDereferenceObject(
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IN PEX_FAST_REF FastRef,
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IN PVOID Object
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);
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//
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// Object Create and Object Name Capture Functions
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//
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NTSTATUS
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NTAPI
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ObpCaptureObjectName(
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IN PUNICODE_STRING CapturedName,
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IN PUNICODE_STRING ObjectName,
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IN KPROCESSOR_MODE AccessMode,
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IN BOOLEAN AllocateFromLookaside
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);
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NTSTATUS
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NTAPI
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ObpCaptureObjectCreateInformation(
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IN POBJECT_ATTRIBUTES ObjectAttributes,
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IN KPROCESSOR_MODE AccessMode,
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IN KPROCESSOR_MODE CreatorMode,
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IN BOOLEAN AllocateFromLookaside,
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IN POBJECT_CREATE_INFORMATION ObjectCreateInfo,
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OUT PUNICODE_STRING ObjectName
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);
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//
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// Miscellanea
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//
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ULONG
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NTAPI
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ObGetProcessHandleCount(
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IN PEPROCESS Process
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);
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//
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// Global data inside the Object Manager
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//
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extern ULONG ObpTraceLevel;
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extern KEVENT ObpDefaultObject;
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extern KGUARDED_MUTEX ObpDeviceMapLock;
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extern POBJECT_TYPE ObpTypeObjectType;
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extern POBJECT_TYPE ObpDirectoryObjectType;
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extern POBJECT_TYPE ObpSymbolicLinkObjectType;
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extern POBJECT_DIRECTORY ObpRootDirectoryObject;
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extern POBJECT_DIRECTORY ObpTypeDirectoryObject;
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extern PHANDLE_TABLE ObpKernelHandleTable;
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extern WORK_QUEUE_ITEM ObpReaperWorkItem;
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extern volatile PVOID ObpReaperList;
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extern GENERAL_LOOKASIDE ObpNameBufferLookasideList, ObpCreateInfoLookasideList;
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extern BOOLEAN IoCountOperations;
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extern ALIGNEDNAME ObpDosDevicesShortNamePrefix;
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extern ALIGNEDNAME ObpDosDevicesShortNameRoot;
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extern UNICODE_STRING ObpDosDevicesShortName;
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extern WCHAR ObpUnsecureGlobalNamesBuffer[128];
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extern ULONG ObpUnsecureGlobalNamesLength;
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extern ULONG ObpObjectSecurityMode;
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extern ULONG ObpProtectionMode;
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extern ULONG ObpLUIDDeviceMapsDisabled;
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extern ULONG ObpLUIDDeviceMapsEnabled;
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//
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// Inlined Functions
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//
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#include "ob_x.h"
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