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IVssSoftwareSnapshotProvider::QueryRevertStatus method (vsprov.h)

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Returns an IVssAsync interface pointer that can be used to determine the status of the revert operation.

Syntax

HRESULT QueryRevertStatus(
  [in]  VSS_PWSZ  pwszVolume,
  [out] IVssAsync **ppAsync
);

Parameters

[in] pwszVolume

Null-terminated wide character string containing the volume name. The name must be in one of the following formats and must include a trailing backslash (\):

  • The path of a mounted folder, for example, Y:\MountX\
  • A drive letter, for example, D:\
  • A volume GUID path of the form \\?\Volume{GUID}\ (where GUID identifies the volume)

[out] ppAsync

Pointer to a location that will receive an IVssAsync interface pointer that can be used to retrieve the status of the revert operation. When the operation is complete, the caller must release the interface pointer by calling the IUnknown::Release method.

Return value

The following are the valid return codes for this method.

Value Meaning
S_OK
 The status of the revert operation was successfully queried.
E_ACCESSDENIED
 The caller does not have sufficient backup privileges or is not an administrator.
E_INVALIDARG
 One of the parameter values is not valid.
E_OUTOFMEMORY
 The caller is out of memory or other system resources.
VSS_E_OBJECT_NOT_FOUND
 The pwszVolume parameter does not specify a valid volume.
VSS_E_VOLUME_NOT_SUPPORTED
 The revert operation is not supported on this volume.

Remarks

The revert operation will continue even if the computer is rebooted, and cannot be canceled or undone, except by restoring a backup that was created using another method. The IVssAsync::QueryStatus method cannot return VSS_S_ASYNC_CANCELLED, because the revert operation cannot be canceled after it has started.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header vsprov.h
Library VssApi.lib

See also

IVssSoftwareSnapshotProvider