IWbemEventProviderSecurity::AccessCheck method (wbemprov.h)

The AccessCheck method is implemented by an event provider and called by Windows Management Instrumentation (WMI) when a consumer subscribes to an event specified in wszQuery. A consumer that has access permission for an event can subscribe to that event. A consumer that does not have access permission for an event cannot subscribe to that event. For more information, see Writing an Event Provider and Securing WMI Events.

For a temporary consumer, WMI sets the PSID supplied in the pSid parameter to NULL and the call is made by impersonating the consumer. For a permanent consumer, WMI sets the PSID with the security identifier (SID) of the user who created the subscription.

Syntax

HRESULT AccessCheck(
  [in] WBEM_CWSTR wszQueryLanguage,
  [in] WBEM_CWSTR wszQuery,
  [in] long       lSidLength,
  [in] const BYTE *pSid
);

Parameters

[in] wszQueryLanguage

Language of the following query filter, which is "WQL".

[in] wszQuery

Text of the event query filter, which is registered by a logical consumer.

[in] lSidLength

Integer that contains the security identifier (SID) length, or 0 (zero) if the subscription builder token is available.

[in] pSid

Pointer to the constant byte integer type that contains the SID, or NULL if the subscription builder's token is available.

Return value

This method returns an HRESULT that indicates the status of the method call. The following list lists the value contained in an HRESULT.

Requirements

Requirement	Value
Minimum supported client	Windows Vista
Minimum supported server	Windows Server 2008
Target Platform	Windows
Header	wbemprov.h (include Wbemidl.h)
Library	Wbemuuid.lib
DLL	Wbemsvc.dll

See also

IWbemEventProvider

IWbemEventProviderSecurity

SELECT Statement for Event Queries

Securing WMI Events