ReactOS 0.4.15-dev-8231-g29a56f3
ob_x.h File Reference
#include "ex.h"
Include dependency graph for ob_x.h:
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros

#define OBP_LOCK_STATE_PRE_ACQUISITION_EXCLUSIVE   0xAAAA1234
 
#define OBP_LOCK_STATE_PRE_ACQUISITION_SHARED   0xBBBB1234
 
#define OBP_LOCK_STATE_POST_ACQUISITION_EXCLUSIVE   0xCCCC1234
 
#define OBP_LOCK_STATE_POST_ACQUISITION_SHARED   0xDDDD1234
 
#define OBP_LOCK_STATE_RELEASED   0xEEEE1234
 
#define OBP_LOCK_STATE_INITIALIZED   0xFFFF1234
 
#define OBP_NAME_LOOKASIDE_MAX_SIZE   248
 

Functions

FORCEINLINE ULONG ObpValidateAttributes (IN ULONG Attributes, IN KPROCESSOR_MODE PreviousMode)
 
FORCEINLINE ULONG ObpSelectObjectLockSlot (IN POBJECT_HEADER ObjectHeader)
 
FORCEINLINE VOID ObpAcquireObjectLock (IN POBJECT_HEADER ObjectHeader)
 
FORCEINLINE VOID ObpAcquireObjectLockShared (IN POBJECT_HEADER ObjectHeader)
 
FORCEINLINE VOID ObpReleaseObjectLock (IN POBJECT_HEADER ObjectHeader)
 
FORCEINLINE POBJECT_HEADER_NAME_INFO ObpReferenceNameInfo (IN POBJECT_HEADER ObjectHeader)
 
FORCEINLINE VOID ObpDereferenceNameInfo (IN POBJECT_HEADER_NAME_INFO HeaderNameInfo)
 
FORCEINLINE VOID ObpAcquireDirectoryLockShared (IN POBJECT_DIRECTORY Directory, IN POBP_LOOKUP_CONTEXT Context)
 Locks a directory for shared access. Used for reading members of the directory object.
 
FORCEINLINE VOID ObpAcquireDirectoryLockExclusive (IN POBJECT_DIRECTORY Directory, IN POBP_LOOKUP_CONTEXT Context)
 Locks a directory for exclusive access. Used for writing/reading members of the directory object.
 
FORCEINLINE VOID ObpReleaseDirectoryLock (IN POBJECT_DIRECTORY Directory, IN POBP_LOOKUP_CONTEXT Context)
 Unlocks a previously shared or exclusively locked directory.
 
FORCEINLINE VOID ObpInitializeLookupContext (IN POBP_LOOKUP_CONTEXT Context)
 Initializes a new object directory lookup context. Used for lookup operations (insertions/deletions) in a directory. Employed in conjunction with the directory locking functions.
 
FORCEINLINE VOID ObpAcquireLookupContextLock (IN POBP_LOOKUP_CONTEXT Context, IN POBJECT_DIRECTORY Directory)
 Locks an object directory lookup context for performing lookup operations (insertions/deletions) in a directory. The directory is locked for exclusive access.
 
FORCEINLINE VOID ObpReleaseLookupContextObject (IN POBP_LOOKUP_CONTEXT Context)
 
FORCEINLINE VOID ObpReleaseLookupContext (IN POBP_LOOKUP_CONTEXT Context)
 Releases an initialized object directory lookup context. Unlocks it if necessary, and dereferences the underlying object.
 
FORCEINLINE VOID ObpEnterObjectTypeMutex (IN POBJECT_TYPE ObjectType)
 
FORCEINLINE VOID ObpLeaveObjectTypeMutex (IN POBJECT_TYPE ObjectType)
 
FORCEINLINE VOID ObpReleaseObjectCreateInformation (IN POBJECT_CREATE_INFORMATION ObjectCreateInfo)
 
FORCEINLINE PVOID ObpAllocateObjectCreateInfoBuffer (IN PP_NPAGED_LOOKASIDE_NUMBER Type)
 
FORCEINLINE VOID ObpFreeCapturedAttributes (IN PVOID Buffer, IN PP_NPAGED_LOOKASIDE_NUMBER Type)
 
FORCEINLINE VOID ObpFreeObjectCreateInformation (IN POBJECT_CREATE_INFORMATION ObjectCreateInfo)
 
FORCEINLINE VOID ObpCalloutStart (IN PKIRQL CalloutIrql)
 
FORCEINLINE VOID ObpCalloutEnd (IN KIRQL CalloutIrql, IN PCHAR Procedure, IN POBJECT_TYPE ObjectType, IN PVOID Object)
 

Macro Definition Documentation

◆ OBP_LOCK_STATE_INITIALIZED

#define OBP_LOCK_STATE_INITIALIZED   0xFFFF1234

Definition at line 16 of file ob_x.h.

◆ OBP_LOCK_STATE_POST_ACQUISITION_EXCLUSIVE

#define OBP_LOCK_STATE_POST_ACQUISITION_EXCLUSIVE   0xCCCC1234

Definition at line 13 of file ob_x.h.

◆ OBP_LOCK_STATE_POST_ACQUISITION_SHARED

#define OBP_LOCK_STATE_POST_ACQUISITION_SHARED   0xDDDD1234

Definition at line 14 of file ob_x.h.

◆ OBP_LOCK_STATE_PRE_ACQUISITION_EXCLUSIVE

#define OBP_LOCK_STATE_PRE_ACQUISITION_EXCLUSIVE   0xAAAA1234

Definition at line 11 of file ob_x.h.

◆ OBP_LOCK_STATE_PRE_ACQUISITION_SHARED

#define OBP_LOCK_STATE_PRE_ACQUISITION_SHARED   0xBBBB1234

Definition at line 12 of file ob_x.h.

◆ OBP_LOCK_STATE_RELEASED

#define OBP_LOCK_STATE_RELEASED   0xEEEE1234

Definition at line 15 of file ob_x.h.

◆ OBP_NAME_LOOKASIDE_MAX_SIZE

#define OBP_NAME_LOOKASIDE_MAX_SIZE   248

Definition at line 18 of file ob_x.h.

Function Documentation

◆ ObpAcquireDirectoryLockExclusive()

FORCEINLINE VOID ObpAcquireDirectoryLockExclusive ( IN POBJECT_DIRECTORY  Directory,
IN POBP_LOOKUP_CONTEXT  Context 
)

Locks a directory for exclusive access. Used for writing/reading members of the directory object.

Parameters
[in]DirectoryThe directory to lock.
[in]ContextThe lookup lock context.

Definition at line 212 of file ob_x.h.

214{
215 /* Update lock flag */
217
218 /* Acquire an exclusive directory lock */
221
222 /* Update lock flag */
224}
FORCEINLINE VOID ExAcquirePushLockExclusive(PEX_PUSH_LOCK PushLock)
Definition: ex.h:1036
#define KeEnterCriticalRegion()
Definition: ke_x.h:88
#define OBP_LOCK_STATE_PRE_ACQUISITION_EXCLUSIVE
Definition: ob_x.h:11
#define OBP_LOCK_STATE_POST_ACQUISITION_EXCLUSIVE
Definition: ob_x.h:13
base for all directory entries
Definition: entries.h:138

Referenced by NtSetInformationObject(), and ObpAcquireLookupContextLock().

◆ ObpAcquireDirectoryLockShared()

FORCEINLINE VOID ObpAcquireDirectoryLockShared ( IN POBJECT_DIRECTORY  Directory,
IN POBP_LOOKUP_CONTEXT  Context 
)

Locks a directory for shared access. Used for reading members of the directory object.

Parameters
[in]DirectoryThe directory to lock.
[in]ContextThe lookup lock context.

Definition at line 185 of file ob_x.h.

187{
188 /* Update lock flag */
190
191 /* Acquire an shared directory lock */
194
195 /* Update lock flag */
197}
FORCEINLINE VOID ExAcquirePushLockShared(PEX_PUSH_LOCK PushLock)
Definition: ex.h:1105
#define OBP_LOCK_STATE_POST_ACQUISITION_SHARED
Definition: ob_x.h:14
#define OBP_LOCK_STATE_PRE_ACQUISITION_SHARED
Definition: ob_x.h:12

Referenced by NtQueryDirectoryObject(), and ObpLookupEntryDirectory().

◆ ObpAcquireLookupContextLock()

FORCEINLINE VOID ObpAcquireLookupContextLock ( IN POBP_LOOKUP_CONTEXT  Context,
IN POBJECT_DIRECTORY  Directory 
)

Locks an object directory lookup context for performing lookup operations (insertions/deletions) in a directory. The directory is locked for exclusive access.

Parameters
[in]ContextThe lookup context to lock.
[in]DirectoryThe directory on which the lookup context applies.

Definition at line 281 of file ob_x.h.

283{
284 /* Acquire an exclusive directory lock and save its lock state */
286 Context->Directory = Directory;
287 Context->DirectoryLocked = TRUE;
288}
#define TRUE
Definition: types.h:120
FORCEINLINE VOID ObpAcquireDirectoryLockExclusive(IN POBJECT_DIRECTORY Directory, IN POBP_LOOKUP_CONTEXT Context)
Locks a directory for exclusive access. Used for writing/reading members of the directory object.
Definition: ob_x.h:212

Referenced by ObCreateObjectType(), ObInitSystem(), ObpDeleteNameCheck(), and ObpLookupObjectName().

◆ ObpAcquireObjectLock()

FORCEINLINE VOID ObpAcquireObjectLock ( IN POBJECT_HEADER  ObjectHeader)

Definition at line 48 of file ob_x.h.

49{
50 ULONG Slot;
51 POBJECT_TYPE ObjectType = ObjectHeader->Type;
52
53 /* Sanity check */
55
56 /* Pick a slot */
57 Slot = ObpSelectObjectLockSlot(ObjectHeader);
58
59 /* Enter a critical region and acquire the resource */
62}
#define APC_LEVEL
Definition: env_spec_w32.h:695
#define KeGetCurrentIrql()
Definition: env_spec_w32.h:706
#define ExAcquireResourceExclusiveLite(res, wait)
Definition: env_spec_w32.h:615
#define ASSERT(a)
Definition: mode.c:44
ObjectType
Definition: metafile.c:81
FORCEINLINE ULONG ObpSelectObjectLockSlot(IN POBJECT_HEADER ObjectHeader)
Definition: ob_x.h:40
uint32_t ULONG
Definition: typedefs.h:59

Referenced by NtQuerySymbolicLinkObject(), ObInsertObject(), ObpDecrementHandleCount(), ObpDeleteNameCheck(), ObpIncrementHandleCount(), ObpIncrementUnnamedHandleCount(), ObpSetPermanentObject(), and ObSetSecurityDescriptorInfo().

◆ ObpAcquireObjectLockShared()

FORCEINLINE VOID ObpAcquireObjectLockShared ( IN POBJECT_HEADER  ObjectHeader)

Definition at line 66 of file ob_x.h.

67{
68 ULONG Slot;
69 POBJECT_TYPE ObjectType = ObjectHeader->Type;
70
71 /* Sanity check */
73
74 /* Pick a slot */
75 Slot = ObpSelectObjectLockSlot(ObjectHeader);
76
77 /* Enter a critical region and acquire the resource */
79 ExAcquireResourceSharedLite(&ObjectType->ObjectLocks[Slot], TRUE);
80}
#define ExAcquireResourceSharedLite(res, wait)
Definition: env_spec_w32.h:621

Referenced by ObpReferenceSecurityDescriptor().

◆ ObpAllocateObjectCreateInfoBuffer()

FORCEINLINE PVOID ObpAllocateObjectCreateInfoBuffer ( IN PP_NPAGED_LOOKASIDE_NUMBER  Type)

Definition at line 379 of file ob_x.h.

380{
383 PKPRCB Prcb = KeGetCurrentPrcb();
384
385 /* Get the P list first */
387
388 /* Attempt allocation */
389 List->L.TotalAllocates++;
390 Buffer = (PVOID)InterlockedPopEntrySList(&List->L.ListHead);
391 if (!Buffer)
392 {
393 /* Let the balancer know that the P list failed */
394 List->L.AllocateMisses++;
395
396 /* Try the L List */
398 List->L.TotalAllocates++;
399 Buffer = (PVOID)InterlockedPopEntrySList(&List->L.ListHead);
400 if (!Buffer)
401 {
402 /* Let the balancer know the L list failed too */
403 List->L.AllocateMisses++;
404
405 /* Allocate it */
406 Buffer = List->L.Allocate(List->L.Type, List->L.Size, List->L.Tag);
407 }
408 }
409
410 /* Return buffer */
411 return Buffer;
412}
Type
Definition: Type.h:7
Definition: bufpool.h:45
FORCEINLINE struct _KPRCB * KeGetCurrentPrcb(VOID)
Definition: ketypes.h:1161
PP_LOOKASIDE_LIST PPLookasideList[16]
Definition: ketypes.h:708
struct _GENERAL_LOOKASIDE * P
Definition: ketypes.h:871
struct _GENERAL_LOOKASIDE * L
Definition: ketypes.h:872
_Must_inspect_result_ _In_ WDFCMRESLIST List
Definition: wdfresource.h:550
struct LOOKASIDE_ALIGN _NPAGED_LOOKASIDE_LIST * PNPAGED_LOOKASIDE_LIST
#define InterlockedPopEntrySList(SListHead)
Definition: rtlfuncs.h:3392

Referenced by ObCreateObject(), and ObpAllocateObjectNameBuffer().

◆ ObpCalloutEnd()

FORCEINLINE VOID ObpCalloutEnd ( IN KIRQL  CalloutIrql,
IN PCHAR  Procedure,
IN POBJECT_TYPE  ObjectType,
IN PVOID  Object 
)

◆ ObpCalloutStart()

◆ ObpDereferenceNameInfo()

FORCEINLINE VOID ObpDereferenceNameInfo ( IN POBJECT_HEADER_NAME_INFO  HeaderNameInfo)

Definition at line 143 of file ob_x.h.

144{
146
147 /* Bail out if there's no info at all */
148 if (!HeaderNameInfo) return;
149
150 /* Remove a query reference and check if it was the last one */
151 if (!InterlockedDecrement((PLONG)&HeaderNameInfo->QueryReferences))
152 {
153 /* Check if we have a name */
154 if (HeaderNameInfo->Name.Buffer)
155 {
156 /* We can get rid of the object name now */
157 ExFreePoolWithTag(HeaderNameInfo->Name.Buffer, OB_NAME_TAG);
158 RtlInitEmptyUnicodeString(&HeaderNameInfo->Name, NULL, 0);
159 }
160
161 /* Check if the object has a directory associated to it */
162 Directory = HeaderNameInfo->Directory;
163 if (Directory)
164 {
165 /* Delete the directory */
166 HeaderNameInfo->Directory = NULL;
168 }
169 }
170}
#define InterlockedDecrement
Definition: armddk.h:52
#define NULL
Definition: types.h:112
#define ExFreePoolWithTag(_P, _T)
Definition: module.h:1109
VOID NTAPI ObDereferenceObjectDeferDelete(IN PVOID Object)
Definition: obref.c:358
Directory()
Definition: entries.h:140
#define OB_NAME_TAG
Definition: tag.h:118
int32_t * PLONG
Definition: typedefs.h:58

Referenced by ObInsertObject(), ObpCreateSymbolicLinkName(), ObpDeleteNameCheck(), ObpProcessDosDeviceSymbolicLink(), ObpReleaseLookupContextObject(), ObSetDeviceMap(), and ObSetDirectoryDeviceMap().

◆ ObpEnterObjectTypeMutex()

FORCEINLINE VOID ObpEnterObjectTypeMutex ( IN POBJECT_TYPE  ObjectType)

Definition at line 340 of file ob_x.h.

341{
342 /* Sanity check */
344
345 /* Enter a critical region and acquire the resource */
348}

Referenced by ObCreateObjectType(), ObpDeleteObject(), ObpIncrementHandleCount(), ObpIncrementUnnamedHandleCount(), ObSetDeviceMap(), and ObSetDirectoryDeviceMap().

◆ ObpFreeCapturedAttributes()

FORCEINLINE VOID ObpFreeCapturedAttributes ( IN PVOID  Buffer,
IN PP_NPAGED_LOOKASIDE_NUMBER  Type 
)

Definition at line 416 of file ob_x.h.

418{
420 PKPRCB Prcb = KeGetCurrentPrcb();
421
422 /* Use the P List */
424 List->L.TotalFrees++;
425
426 /* Check if the Free was within the Depth or not */
427 if (ExQueryDepthSList(&List->L.ListHead) >= List->L.Depth)
428 {
429 /* Let the balancer know */
430 List->L.FreeMisses++;
431
432 /* Use the L List */
434 List->L.TotalFrees++;
435
436 /* Check if the Free was within the Depth or not */
437 if (ExQueryDepthSList(&List->L.ListHead) >= List->L.Depth)
438 {
439 /* All lists failed, use the pool */
440 List->L.FreeMisses++;
441 List->L.Free(Buffer);
442 }
443 else
444 {
445 /* The free was within the Depth */
446 InterlockedPushEntrySList(&List->L.ListHead,
448 }
449 }
450 else
451 {
452 /* The free was within the Depth */
453 InterlockedPushEntrySList(&List->L.ListHead,
455 }
456}
if(dx< 0)
Definition: linetemp.h:194
FORCEINLINE USHORT ExQueryDepthSList(_In_ PSLIST_HEADER SListHead)
Definition: exfuncs.h:153
#define InterlockedPushEntrySList(SListHead, SListEntry)
Definition: rtlfuncs.h:3389
#define PSLIST_ENTRY
Definition: rtltypes.h:134

Referenced by ObCreateObject(), ObFreeObjectCreateInfoBuffer(), ObpFreeObjectCreateInformation(), and ObpFreeObjectNameBuffer().

◆ ObpFreeObjectCreateInformation()

FORCEINLINE VOID ObpFreeObjectCreateInformation ( IN POBJECT_CREATE_INFORMATION  ObjectCreateInfo)

Definition at line 460 of file ob_x.h.

461{
462 /* First release the attributes, then free them from the lookaside list */
463 ObpReleaseObjectCreateInformation(ObjectCreateInfo);
465}
@ LookasideCreateInfoList
Definition: mmtypes.h:171
FORCEINLINE VOID ObpReleaseObjectCreateInformation(IN POBJECT_CREATE_INFORMATION ObjectCreateInfo)
Definition: ob_x.h:364
FORCEINLINE VOID ObpFreeCapturedAttributes(IN PVOID Buffer, IN PP_NPAGED_LOOKASIDE_NUMBER Type)
Definition: ob_x.h:416

Referenced by ObCreateObject(), ObDeleteCapturedInsertInfo(), ObInsertObject(), ObOpenObjectByName(), and ObpDeallocateObject().

◆ ObpInitializeLookupContext()

FORCEINLINE VOID ObpInitializeLookupContext ( IN POBP_LOOKUP_CONTEXT  Context)

Initializes a new object directory lookup context. Used for lookup operations (insertions/deletions) in a directory. Employed in conjunction with the directory locking functions.

Parameters
[in]ContextThe new lookup context to initialize.

Definition at line 258 of file ob_x.h.

259{
260 /* Initialize a null context */
261 Context->Object = NULL;
262 Context->Directory = NULL;
263 Context->DirectoryLocked = FALSE;
264 Context->LockStateSignature = OBP_LOCK_STATE_INITIALIZED;
265}
#define FALSE
Definition: types.h:117
#define OBP_LOCK_STATE_INITIALIZED
Definition: ob_x.h:16

Referenced by NtQueryDirectoryObject(), NtSetInformationObject(), ObCreateObjectType(), ObInitSystem(), ObInsertObject(), ObpDeleteNameCheck(), ObpLookupObjectName(), and ObpProcessDosDeviceSymbolicLink().

◆ ObpLeaveObjectTypeMutex()

FORCEINLINE VOID ObpLeaveObjectTypeMutex ( IN POBJECT_TYPE  ObjectType)

Definition at line 352 of file ob_x.h.

353{
354 /* Enter a critical region and acquire the resource */
357
358 /* Sanity check */
360}
#define KeLeaveCriticalRegion()
Definition: ke_x.h:119
VOID FASTCALL ExReleaseResourceLite(IN PERESOURCE Resource)
Definition: resource.c:1822

Referenced by ObCreateObjectType(), ObpDeleteObject(), ObpIncrementHandleCount(), ObpIncrementUnnamedHandleCount(), ObSetDeviceMap(), and ObSetDirectoryDeviceMap().

◆ ObpReferenceNameInfo()

FORCEINLINE POBJECT_HEADER_NAME_INFO ObpReferenceNameInfo ( IN POBJECT_HEADER  ObjectHeader)

Definition at line 102 of file ob_x.h.

103{
104 POBJECT_HEADER_NAME_INFO ObjectNameInfo;
105 ULONG NewValue, References;
106
107 /* Make sure we have name information at all */
108 ObjectNameInfo = OBJECT_HEADER_TO_NAME_INFO(ObjectHeader);
109 if (!ObjectNameInfo) return NULL;
110
111 /* Get the number of references */
112 References = ObjectNameInfo->QueryReferences;
113 for (;;)
114 {
115 /* Check if the count is 0 and fail if so */
116 if (!References) return NULL;
117
118 /* Increment the number of references */
119 NewValue = InterlockedCompareExchange((PLONG)&ObjectNameInfo->
120 QueryReferences,
121 References + 1,
122 References);
123 if (NewValue == References) break;
124
125 /* We failed, try again */
126 References = NewValue;
127 }
128
129 /* Check for magic flag */
130 if (ObjectNameInfo->QueryReferences & 0x80000000)
131 {
132 /* FIXME: Unhandled*/
133 DbgPrint("OB: Unhandled path\n");
134 ASSERT(FALSE);
135 }
136
137 /* Return the name information */
138 return ObjectNameInfo;
139}
#define DbgPrint
Definition: hal.h:12
#define InterlockedCompareExchange
Definition: interlocked.h:104
#define OBJECT_HEADER_TO_NAME_INFO(h)
Definition: obtypes.h:114

Referenced by ObInsertObject(), ObpCreateSymbolicLinkName(), ObpDeleteNameCheck(), ObpLookupEntryDirectory(), ObpProcessDosDeviceSymbolicLink(), ObSetDeviceMap(), and ObSetDirectoryDeviceMap().

◆ ObpReleaseDirectoryLock()

FORCEINLINE VOID ObpReleaseDirectoryLock ( IN POBJECT_DIRECTORY  Directory,
IN POBP_LOOKUP_CONTEXT  Context 
)

Unlocks a previously shared or exclusively locked directory.

Parameters
[in]DirectoryThe directory to unlock.
[in]ContextThe lookup lock context.

Definition at line 238 of file ob_x.h.

240{
241 /* Release the lock */
243 Context->LockStateSignature = OBP_LOCK_STATE_RELEASED;
245}
FORCEINLINE VOID ExReleasePushLock(PEX_PUSH_LOCK PushLock)
Definition: ex.h:1296
#define OBP_LOCK_STATE_RELEASED
Definition: ob_x.h:15

Referenced by NtQueryDirectoryObject(), NtSetInformationObject(), ObpLookupEntryDirectory(), and ObpReleaseLookupContext().

◆ ObpReleaseLookupContext()

FORCEINLINE VOID ObpReleaseLookupContext ( IN POBP_LOOKUP_CONTEXT  Context)

Releases an initialized object directory lookup context. Unlocks it if necessary, and dereferences the underlying object.

Parameters
[in]ContextThe lookup context to release.

Definition at line 323 of file ob_x.h.

324{
325 /* Check if we came back with the directory locked */
326 if (Context->DirectoryLocked)
327 {
328 /* Release the directory lock */
330 Context->Directory = NULL;
331 Context->DirectoryLocked = FALSE;
332 }
333
334 /* Clear the context */
336}
FORCEINLINE VOID ObpReleaseLookupContextObject(IN POBP_LOOKUP_CONTEXT Context)
Definition: ob_x.h:292
FORCEINLINE VOID ObpReleaseDirectoryLock(IN POBJECT_DIRECTORY Directory, IN POBP_LOOKUP_CONTEXT Context)
Unlocks a previously shared or exclusively locked directory.
Definition: ob_x.h:238

Referenced by NtSetInformationObject(), ObCreateObjectType(), ObInitSystem(), ObInsertObject(), ObOpenObjectByName(), ObpCreateHandle(), ObpDeleteNameCheck(), ObpLookupObjectName(), ObpProcessDosDeviceSymbolicLink(), and ObReferenceObjectByName().

◆ ObpReleaseLookupContextObject()

FORCEINLINE VOID ObpReleaseLookupContextObject ( IN POBP_LOOKUP_CONTEXT  Context)

Definition at line 292 of file ob_x.h.

293{
294 POBJECT_HEADER ObjectHeader;
295 POBJECT_HEADER_NAME_INFO HeaderNameInfo;
296
297 /* Check if we had an object */
298 if (Context->Object)
299 {
300 /* Get the object name information */
301 ObjectHeader = OBJECT_TO_OBJECT_HEADER(Context->Object);
302 HeaderNameInfo = OBJECT_HEADER_TO_NAME_INFO(ObjectHeader);
303
304 /* Release the name information */
305 ObpDereferenceNameInfo(HeaderNameInfo);
306
307 /* Dereference the object */
309 Context->Object = NULL;
310 }
311}
#define OBJECT_TO_OBJECT_HEADER(o)
Definition: obtypes.h:111
FORCEINLINE VOID ObpDereferenceNameInfo(IN POBJECT_HEADER_NAME_INFO HeaderNameInfo)
Definition: ob_x.h:143
#define ObDereferenceObject
Definition: obfuncs.h:203

Referenced by ObpLookupEntryDirectory(), and ObpReleaseLookupContext().

◆ ObpReleaseObjectCreateInformation()

FORCEINLINE VOID ObpReleaseObjectCreateInformation ( IN POBJECT_CREATE_INFORMATION  ObjectCreateInfo)

Definition at line 364 of file ob_x.h.

365{
366 /* Check if we have a security descriptor */
367 if (ObjectCreateInfo->SecurityDescriptor)
368 {
369 /* Release it */
370 SeReleaseSecurityDescriptor(ObjectCreateInfo->SecurityDescriptor,
371 ObjectCreateInfo->ProbeMode,
372 TRUE);
373 ObjectCreateInfo->SecurityDescriptor = NULL;
374 }
375}
NTSTATUS NTAPI SeReleaseSecurityDescriptor(_In_ PSECURITY_DESCRIPTOR CapturedSecurityDescriptor, _In_ KPROCESSOR_MODE CurrentMode, _In_ BOOLEAN CaptureIfKernelMode)
Releases a captured security descriptor buffer.
Definition: sd.c:760

Referenced by ObOpenObjectByName(), ObpCaptureObjectCreateInformation(), and ObpFreeObjectCreateInformation().

◆ ObpReleaseObjectLock()

FORCEINLINE VOID ObpReleaseObjectLock ( IN POBJECT_HEADER  ObjectHeader)

Definition at line 84 of file ob_x.h.

85{
86 ULONG Slot;
87 POBJECT_TYPE ObjectType = ObjectHeader->Type;
88
89 /* Pick a slot */
90 Slot = ObpSelectObjectLockSlot(ObjectHeader);
91
92 /* Release the resource and leave a critical region */
93 ExReleaseResourceLite(&ObjectType->ObjectLocks[Slot]);
95
96 /* Sanity check */
98}

Referenced by NtQuerySymbolicLinkObject(), ObInsertObject(), ObpDecrementHandleCount(), ObpDeleteNameCheck(), ObpIncrementHandleCount(), ObpIncrementUnnamedHandleCount(), ObpReferenceSecurityDescriptor(), ObpSetPermanentObject(), and ObSetSecurityDescriptorInfo().

◆ ObpSelectObjectLockSlot()

FORCEINLINE ULONG ObpSelectObjectLockSlot ( IN POBJECT_HEADER  ObjectHeader)

Definition at line 40 of file ob_x.h.

41{
42 /* We have 4 locks total, this will return a 0-index slot */
43 return (((ULONG_PTR)ObjectHeader) >> 8) & 3;
44}
uint32_t ULONG_PTR
Definition: typedefs.h:65

Referenced by ObpAcquireObjectLock(), ObpAcquireObjectLockShared(), and ObpReleaseObjectLock().

◆ ObpValidateAttributes()

FORCEINLINE ULONG ObpValidateAttributes ( IN ULONG  Attributes,
IN KPROCESSOR_MODE  PreviousMode 
)

Definition at line 22 of file ob_x.h.

24{
26 {
27 /* For kernel, allow any valid attributes */
29 }
30 else
31 {
32 /* For user, mask out kernel-only attributes */
35 }
36}
#define OBJ_KERNEL_HANDLE
Definition: winternl.h:231
#define OBJ_VALID_ATTRIBUTES
Definition: winternl.h:233
#define KernelMode
Definition: asm.h:34
#define OBJ_VALID_KERNEL_ATTRIBUTES
Definition: obtypes.h:92
_Must_inspect_result_ _In_ WDFDMAENABLER _In_ _In_opt_ PWDF_OBJECT_ATTRIBUTES Attributes
_In_ KPROCESSOR_MODE PreviousMode
Definition: sefuncs.h:103

Referenced by NtOpenProcess(), NtOpenProcessTokenEx(), NtOpenThread(), NtOpenThreadTokenEx(), and ProbeAndCaptureObjectAttributes().