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