ntoskrnl/include/internal/ob.h

   1 /*
   2  * COPYRIGHT:         See COPYING in the top level directory
   3  * PROJECT:           ReactOS kernel
   4  * FILE:              include/internal/objmgr.h
   5  * PURPOSE:           Object manager definitions
   6  * PROGRAMMER:        David Welch (welch@mcmail.com)
   7  */
   8
   9 #ifndef __INCLUDE_INTERNAL_OBJMGR_H
  10 #define __INCLUDE_INTERNAL_OBJMGR_H
  11
  12 #define NTOS_MODE_KERNEL
  13 #include <ntos.h>
  14
  15 struct _EPROCESS;
  16
  17 typedef struct
  18 {
  19    CSHORT Type;
  20    CSHORT Size;
  21 } COMMON_BODY_HEADER, *PCOMMON_BODY_HEADER;
  22
  23 typedef PVOID POBJECT;
  24
  25 typedef struct _DIRECTORY_OBJECT
  26 {
  27    CSHORT Type;
  28    CSHORT Size;
  29
  30    /*
  31     * PURPOSE: Head of the list of our subdirectories
  32     */
  33    LIST_ENTRY head;
  34    KSPIN_LOCK Lock;
  35 } DIRECTORY_OBJECT, *PDIRECTORY_OBJECT;
  36
  37
  38 typedef struct _TYPE_OBJECT
  39 {
  40   CSHORT Type;
  41   CSHORT Size;
  42
  43   /* pointer to object type data */
  44   POBJECT_TYPE ObjectType;
  45 } TYPE_OBJECT, *PTYPE_OBJECT;
  46
  47
  48 /*
  49  * Enumeration of object types
  50  */
  51 enum
  52 {
  53    OBJTYP_INVALID,
  54    OBJTYP_TYPE,
  55    OBJTYP_DIRECTORY,
  56    OBJTYP_SYMLNK,
  57    OBJTYP_DEVICE,
  58    OBJTYP_THREAD,
  59    OBJTYP_FILE,
  60    OBJTYP_PROCESS,
  61    OBJTYP_SECTION,
  62    OBJTYP_MAX,
  63 };
  64
  65
  66 #define OBJECT_ALLOC_SIZE(type) (type->NonpagedPoolCharge+sizeof(OBJECT_HEADER)-sizeof(COMMON_BODY_HEADER))
  67
  68
  69 extern PDIRECTORY_OBJECT NameSpaceRoot;
  70 extern POBJECT_TYPE ObSymbolicLinkType;
  71
  72
  73 POBJECT_HEADER BODY_TO_HEADER(PVOID body);
  74 PVOID HEADER_TO_BODY(POBJECT_HEADER obj);
  75
  76 VOID ObpAddEntryDirectory(PDIRECTORY_OBJECT Parent,
  77                           POBJECT_HEADER Header,
  78                           PWSTR Name);
  79 VOID ObpRemoveEntryDirectory(POBJECT_HEADER Header);
  80
  81 VOID
  82 ObInitSymbolicLinkImplementation(VOID);
  83
  84
  85 NTSTATUS ObCreateHandle(struct _EPROCESS* Process,
  86                         PVOID ObjectBody,
  87                         ACCESS_MASK GrantedAccess,
  88                         BOOLEAN Inherit,
  89                         PHANDLE Handle);
  90 VOID ObCreateHandleTable(struct _EPROCESS* Parent,
  91                          BOOLEAN Inherit,
  92                          struct _EPROCESS* Process);
  93 NTSTATUS ObFindObject(POBJECT_ATTRIBUTES ObjectAttributes,
  94                       PVOID* ReturnedObject,
  95                       PUNICODE_STRING RemainingPath,
  96                       POBJECT_TYPE ObjectType);
  97 VOID ObCloseAllHandles(struct _EPROCESS* Process);
  98 VOID ObDeleteHandleTable(struct _EPROCESS* Process);
  99 PVOID ObDeleteHandle(struct _EPROCESS* Process,
 100                      HANDLE Handle);
 101
 102 NTSTATUS
 103 ObpCreateTypeObject(POBJECT_TYPE ObjectType);
 104
 105 ULONG
 106 ObGetObjectHandleCount(PVOID Object);
 107 NTSTATUS
 108 ObDuplicateObject(PEPROCESS SourceProcess,
 109                   PEPROCESS TargetProcess,
 110                   HANDLE SourceHandle,
 111                   PHANDLE TargetHandle,
 112                   ACCESS_MASK DesiredAccess,
 113                   BOOLEAN InheritHandle,
 114                   ULONG Options);
 115
 116 #endif /* __INCLUDE_INTERNAL_OBJMGR_H */