reactos/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 #define TAG_OBJECT_TYPE TAG('O', 'b', 'j', 'T')
  16
  17 struct _EPROCESS;
  18
  19 typedef struct
  20 {
  21    CSHORT Type;
  22    CSHORT Size;
  23 } COMMON_BODY_HEADER, *PCOMMON_BODY_HEADER;
  24
  25 typedef PVOID POBJECT;
  26
  27 typedef struct _DIRECTORY_OBJECT
  28 {
  29    CSHORT Type;
  30    CSHORT Size;
  31
  32    /*
  33     * PURPOSE: Head of the list of our subdirectories
  34     */
  35    LIST_ENTRY head;
  36    KSPIN_LOCK Lock;
  37 } DIRECTORY_OBJECT, *PDIRECTORY_OBJECT;
  38
  39 typedef struct _SYMLINK_OBJECT
  40 {
  41   CSHORT Type;
  42   CSHORT Size;
  43   UNICODE_STRING TargetName;
  44   LARGE_INTEGER CreateTime;
  45 } SYMLINK_OBJECT, *PSYMLINK_OBJECT;
  46
  47
  48 typedef struct _TYPE_OBJECT
  49 {
  50   CSHORT Type;
  51   CSHORT Size;
  52
  53   /* pointer to object type data */
  54   POBJECT_TYPE ObjectType;
  55 } TYPE_OBJECT, *PTYPE_OBJECT;
  56
  57
  58 /*
  59  * Enumeration of object types
  60  */
  61 enum
  62 {
  63    OBJTYP_INVALID,
  64    OBJTYP_TYPE,
  65    OBJTYP_DIRECTORY,
  66    OBJTYP_SYMLNK,
  67    OBJTYP_DEVICE,
  68    OBJTYP_THREAD,
  69    OBJTYP_FILE,
  70    OBJTYP_PROCESS,
  71    OBJTYP_SECTION,
  72    OBJTYP_MAX,
  73 };
  74
  75
  76 #define OBJECT_ALLOC_SIZE(ObjectSize) ((ObjectSize)+sizeof(OBJECT_HEADER)-sizeof(COMMON_BODY_HEADER))
  77
  78
  79 extern PDIRECTORY_OBJECT NameSpaceRoot;
  80 extern POBJECT_TYPE ObSymbolicLinkType;
  81
  82
  83 POBJECT_HEADER BODY_TO_HEADER(PVOID body);
  84 PVOID HEADER_TO_BODY(POBJECT_HEADER obj);
  85
  86 VOID ObpAddEntryDirectory(PDIRECTORY_OBJECT Parent,
  87                           POBJECT_HEADER Header,
  88                           PWSTR Name);
  89 VOID ObpRemoveEntryDirectory(POBJECT_HEADER Header);
  90
  91 VOID
  92 ObInitSymbolicLinkImplementation(VOID);
  93
  94
  95 NTSTATUS ObCreateHandle(struct _EPROCESS* Process,
  96                         PVOID ObjectBody,
  97                         ACCESS_MASK GrantedAccess,
  98                         BOOLEAN Inherit,
  99                         PHANDLE Handle);
 100 VOID ObCreateHandleTable(struct _EPROCESS* Parent,
 101                          BOOLEAN Inherit,
 102                          struct _EPROCESS* Process);
 103 NTSTATUS ObFindObject(POBJECT_ATTRIBUTES ObjectAttributes,
 104                       PVOID* ReturnedObject,
 105                       PUNICODE_STRING RemainingPath,
 106                       POBJECT_TYPE ObjectType);
 107 VOID ObCloseAllHandles(struct _EPROCESS* Process);
 108 VOID ObDeleteHandleTable(struct _EPROCESS* Process);
 109
 110 NTSTATUS
 111 ObDeleteHandle(PEPROCESS Process,
 112                HANDLE Handle,
 113                PVOID *ObjectBody);
 114
 115 NTSTATUS
 116 ObpQueryHandleAttributes(HANDLE Handle,
 117                          POBJECT_HANDLE_ATTRIBUTE_INFORMATION HandleInfo);
 118
 119 NTSTATUS
 120 ObpSetHandleAttributes(HANDLE Handle,
 121                        POBJECT_HANDLE_ATTRIBUTE_INFORMATION HandleInfo);
 122
 123 NTSTATUS
 124 ObpCreateTypeObject(POBJECT_TYPE ObjectType);
 125
 126 ULONG
 127 ObGetObjectHandleCount(PVOID Object);
 128 NTSTATUS
 129 ObDuplicateObject(PEPROCESS SourceProcess,
 130                   PEPROCESS TargetProcess,
 131                   HANDLE SourceHandle,
 132                   PHANDLE TargetHandle,
 133                   ACCESS_MASK DesiredAccess,
 134                   BOOLEAN InheritHandle,
 135                   ULONG Options);
 136
 137 ULONG
 138 ObpGetHandleCountByHandleTable(PHANDLE_TABLE HandleTable);
 139
 140 VOID
 141 STDCALL
 142 ObQueryDeviceMapInformation(PEPROCESS Process, PPROCESS_DEVICEMAP_INFORMATION DeviceMapInfo);
 143
 144 /* Security descriptor cache functions */
 145
 146 NTSTATUS
 147 ObpInitSdCache(VOID);
 148
 149 NTSTATUS
 150 ObpAddSecurityDescriptor(IN PSECURITY_DESCRIPTOR SourceSD,
 151                          OUT PSECURITY_DESCRIPTOR *DestinationSD);
 152
 153 NTSTATUS
 154 ObpRemoveSecurityDescriptor(IN PSECURITY_DESCRIPTOR SecurityDescriptor);
 155
 156 VOID
 157 ObpReferenceCachedSecurityDescriptor(IN PSECURITY_DESCRIPTOR SecurityDescriptor);
 158
 159 VOID
 160 ObpDereferenceCachedSecurityDescriptor(IN PSECURITY_DESCRIPTOR SecurityDescriptor);
 161
 162
 163 #endif /* __INCLUDE_INTERNAL_OBJMGR_H */