RtlVerifyVersionInfo function (wdm.h)

The RtlVerifyVersionInfo routine compares a specified set of operating system version requirements to the corresponding attributes of the currently running version of the operating system.

Syntax

NTSYSAPI NTSTATUS RtlVerifyVersionInfo(
  PRTL_OSVERSIONINFOEXW VersionInfo,
  ULONG                 TypeMask,
  ULONGLONG             ConditionMask
);

Parameters

VersionInfo

[in] Pointer to an RTL_OSVERSIONINFOEXW structure that specifies the operating system version requirements to compare to the corresponding attributes of the currently running version of the operating system.

TypeMask

[in] Specifies which members of VersionInfo to compare with the corresponding attributes of the currently running version of the operating system. TypeMask is set to a logical OR of one or more of the following values.

Value Corresponding member
VER_BUILDNUMBER dwBuildNumber
VER_MAJORVERSION dwMajorVersion
VER_MINORVERSION dwMinorVersion
VER_PLATFORMID dwPlatformId
VER_SERVICEPACKMAJOR wServicePackMajor
VER_SERVICEPACKMINOR wServicePackMinor
VER_SUITENAME wSuiteMask
VER_PRODUCT_TYPE wProductType

ConditionMask

[in] Specifies how to compare each VersionInfo member. To set the value of ConditionMask, a caller should use the VER_SET_CONDITION macro:

VER_SET_CONDITION (
        IN OUT  ULONGLONG  ConditionMask,
        IN ULONG  TypeBitMask,
        IN UCHAR  ComparisonType
        );

The value of ConditionMask is created in the following way:

  • Initialize the value of ConditionMask to zero.
  • Call VER_SET_CONDITION once for each VersionInfo member specified by TypeMask.
  • Set the TypeBitMask and ComparisonType parameters for each call to VER_SET_CONDITION as follows:

TypeBitMask

Indicates the VersionInfo member for which the comparison type is set. TypeBitMask can be one of the following values.

Value Corresponding member
VER_BUILDNUMBER dwBuildNumber
VER_MAJORVERSION dwMajorVersion
VER_MINORVERSION dwMinorVersion
VER_PLATFORMID dwPlatformId
VER_SERVICEPACKMAJOR wServicePackMajor
VER_SERVICEPACKMINOR wServicePackMinor
VER_SUITENAME wSuiteMask
VER_PRODUCT_TYPE wProductType
 

ComparisonType

Specifies the comparison type that RtlVerifyVersionInfo uses to compare the VersionInfo member specified by TypeBitMask with the corresponding attribute of the currently running operating system.

For all values of TypeBitMask other than VER_SUITENAME, ComparisonType is set to one of the following values.

Value Meaning
VER_EQUAL The current value must be equal to the specified value.
VER_GREATER The current value must be greater than the specified value.
VER_GREATER_EQUAL The current value must be greater than or equal to the specified value.
VER_LESS The current value must be less than the specified value.
VER_LESS_EQUAL The current value must be less than or equal to the specified value.
 

If TypeBitMask is set to VER_SUITENAME, ComparisonType is set to of one the following values.

Value Meaning
VER_AND All product suites specified in the wSuiteMask member must be present in the current system.
VER_OR At least one of the specified product suites must be present in the current system.

Return value

RtlVerifyVersionInfo returns one of the following status values:

Return code Description
STATUS_SUCCESS
The specified version matches the currently running version of the operating system.
STATUS_INVALID_PARAMETER
The input parameters are not valid.
STATUS_REVISION_MISMATCH
The specified version does not match the currently running version of the operating system.

Remarks

RtlVerifyVersionInfo enables a driver to easily verify the presence of a required set of operating system attributes. RtlVerifyVersionInfo is the kernel-mode equivalent of the user-mode VerifyVersionInfo function in the Windows SDK. See the example in the Windows SDK that shows how to verify the system version.

Typically, RtlVerifyVersionInfo returns STATUS_SUCCESS only if all comparisons succeed. However, the major version, minor version, and service pack version are tested in a sequential manner in the following way:

  • If the major version exceeds the minimum required, then the minor version and service pack version are not tested. For example, if the current major version is 6.0, a test for a system greater than or equal to version 5.1 service pack 1 succeeds. The minor version and service pack version are not tested.
  • If the minor version exceeds the minimum required, then the service pack version is not tested. For example, if the current major version is 5.2, a test for a system version greater than or equal to version 5.1 service pack 1 succeeds. The service pack version is not tested.
  • If the major service pack version exceeds the minimum required, then the minor service pack version is not tested.
To verify a range of system versions, a driver can call RtlVerifyVersionInfo twice, once to verify a lower bound on the system version and once to verify an upper bound on the system version.

Requirements

   
Minimum supported client Available in Windows 2000 and later versions of Windows.
Target Platform Universal
Header wdm.h (include Ntddk.h)
Library NtosKrnl.lib
DLL NtosKrnl.exe (kernel mode); Ntdll.dll (user mode)
IRQL PASSIVE_LEVEL

See also

RTL_OSVERSIONINFOEXW

RTL_OSVERSIONINFOW

RtlGetVersion