NtQueryInformationResourceManager function (wdm.h)

Article
03/11/2022

The ZwQueryInformationResourceManager routine retrieves information about a specified resource manager object.

Syntax

__kernel_entry NTSYSCALLAPI NTSTATUS NtQueryInformationResourceManager(
  [in]            HANDLE                            ResourceManagerHandle,
  [in]            RESOURCEMANAGER_INFORMATION_CLASS ResourceManagerInformationClass,
  [out]           PVOID                             ResourceManagerInformation,
  [in]            ULONG                             ResourceManagerInformationLength,
  [out, optional] PULONG                            ReturnLength
);

Parameters

[in] ResourceManagerHandle

A handle to a resource manager object that was obtained by a previous call to ZwCreateResourceManager or ZwOpenResourceManager. The handle must have RESOURCEMANAGER_QUERY_INFORMATION access to the object.

[in] ResourceManagerInformationClass

A RESOURCEMANAGER_INFORMATION_CLASS-typed value that specifies the information to retrieve. This value must be ResourceManagerBasicInformation.

[out] ResourceManagerInformation

A pointer to a caller-allocated RESOURCEMANAGER_BASIC_INFORMATION structure that receives information from ZwQueryInformationResourceManager.

[in] ResourceManagerInformationLength

The length, in bytes, of the buffer that the ResourceManagerInformation parameter points to.

[out, optional] ReturnLength

A pointer to a caller-allocated variable that receives the length, in bytes, of the information that KTM writes to the ResourceManagerInformation buffer. This parameter is optional and can be NULL.

Return value

ZwQueryInformationResourceManager returns STATUS_SUCCESS if the operation succeeds. Otherwise, this routine might return one of the following values:

Return code	Description
STATUS_OBJECT_TYPE_MISMATCH	The specified handle is not a handle to a resource manager object.
STATUS_INVALID_HANDLE	An object handle is invalid.
STATUS_INVALID_INFO_CLASS	The ResourceManagerInformationClass parameter's value is invalid.
STATUS_BUFFER_TOO_SMALL	The buffer size that the ResourceManagerInformationLength parameter specifies is smaller than the RESOURCEMANAGER_BASIC_INFORMATION structure.
STATUS_BUFFER_OVERFLOW	The buffer size that the ResourceManagerInformationLength parameter specifies is too small to receive all the variable-length information that is available.
STATUS_ACCESS_DENIED	The caller does not have appropriate access to the resource manager object.

The routine might return other NTSTATUS values.

Remarks

For more information about the ZwQueryInformationResourceManager routine, see Creating a Resource Manager.

NtQueryInformationResourceManager and ZwQueryInformationResourceManager are two versions of the same Windows Native System Services routine.

For calls from kernel-mode drivers, the NtXxx and ZwXxx versions of a Windows Native System Services routine can behave differently in the way that they handle and interpret input parameters. For more information about the relationship between the NtXxx and ZwXxx versions of a routine, see Using Nt and Zw Versions of the Native System Services Routines.

Requirements

Requirement	Value
Minimum supported client	Available in Windows Vista and later operating system versions.
Target Platform	Universal
Header	wdm.h (include Wdm.h, Ntddk.h, Ntifs.h)
Library	NtosKrnl.lib
DLL	NtosKrnl.exe
IRQL	PASSIVE_LEVEL
DDI compliance rules	HwStorPortProhibitedDDIs, PowerIrpDDis