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[NTOSKRNL] Return security descriptor size when querying object basic info

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This commit is contained in:
Pierre Schweitzer 2018-11-10 10:31:03 +01:00
parent 1fb32afefa
commit 102ba75f15
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1 changed files with 23 additions and 3 deletions
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26
ntoskrnl/ob/oblife.c
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@ -1488,6 +1488,8 @@ NtQueryObject(IN HANDLE ObjectHandle,
PVOID Object = NULL;
NTSTATUS Status;
POBJECT_HEADER_QUOTA_INFO ObjectQuota;
SECURITY_INFORMATION SecurityInformation;
POBJECT_TYPE ObjectType;
KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
PAGED_CODE();
@ -1528,6 +1530,7 @@ NtQueryObject(IN HANDLE ObjectHandle,
/* Get the object header */
ObjectHeader = OBJECT_TO_OBJECT_HEADER(Object);
ObjectType = ObjectHeader->Type;
}
_SEH2_TRY
@ -1583,9 +1586,6 @@ NtQueryObject(IN HANDLE ObjectHandle,
BasicInfo->NameInfoSize = 0; /* FIXME*/
BasicInfo->TypeInfoSize = 0; /* FIXME*/
/* Copy security information */
BasicInfo->SecurityDescriptorSize = 0; /* FIXME*/
/* Check if this is a symlink */
if (ObjectHeader->Type == ObpSymbolicLinkObjectType)
{
@ -1599,6 +1599,26 @@ NtQueryObject(IN HANDLE ObjectHandle,
BasicInfo->CreationTime.QuadPart = (ULONGLONG)0;
}
/* Copy security information */
BasicInfo->SecurityDescriptorSize = 0;
if (BooleanFlagOn(HandleInfo.GrantedAccess, READ_CONTROL) &&
ObjectHeader->SecurityDescriptor != NULL)
{
SecurityInformation = OWNER_SECURITY_INFORMATION |
GROUP_SECURITY_INFORMATION |
DACL_SECURITY_INFORMATION |
SACL_SECURITY_INFORMATION;
ObjectType->TypeInfo.SecurityProcedure(Object,
QuerySecurityDescriptor,
&SecurityInformation,
NULL,
&BasicInfo->SecurityDescriptorSize,
&ObjectHeader->SecurityDescriptor,
ObjectType->TypeInfo.PoolType,
&ObjectType->TypeInfo.GenericMapping);
}
/* Break out with success */
Status = STATUS_SUCCESS;
break;