GetNtmsObjectAttributeA function (ntmsapi.h)
[Removable Storage Manager is no longer available as of Windows 7 and Windows Server 2008 R2.]
The GetNtmsObjectAttribute function retrieves the extended attribute (named private data) from the specified RSM object.
Syntax
DWORD GetNtmsObjectAttributeA(
[in] HANDLE hSession,
[in] LPNTMS_GUID lpObjectId,
[in] DWORD dwType,
[in] LPCSTR lpAttributeName,
[out] LPVOID lpAttributeData,
[in, out] LPDWORD lpAttributeSize
);
Parameters
[in] hSession
Handle to the session returned by the OpenNtmsSession function.
[in] lpObjectId
Unique identifier of the object from which to retrieve the data.
[in] dwType
RSM object type. For a list of object types, see NtmsObjectsTypes.
[in] lpAttributeName
Name of the extended attribute whose data is to be retrieved.
[out] lpAttributeData
Pointer to the buffer that receives the data.
[in, out] lpAttributeSize
Size of the data buffer on input, in bytes. On output, the actual size of the data, in bytes.
Return value
This function returns one of the following values.
| Value | Meaning |
|---|---|
|
NTMS_USE_ACCESS to the object or its container is denied. Other security errors are also possible, but they would indicate a security subsystem error.
Windows XP: No access rights are required. |
|
The database query or update failed. |
|
The buffer size is not correctly specified. The correct size is returned in the lpAttributeSize parameter. |
|
The value specified in the hSession parameter is NULL or is not valid. |
|
The pointer is NULL or is not valid. |
|
Unable to connect to the RSM service. |
|
The specified attribute was not found. |
|
The function was successful. |
Remarks
The GetNtmsObjectAttribute function must be executed on the RSM server. Because the buffer of bytes is unmarshaled between systems of different architectures, remote execution of this function may result in unpredictable results.
The following is the list of objects that require special access rights.
| Object | Access |
|---|---|
| NTMS_CHANGER | Requires NTMS_USE_ACCESS to the library. |
| NTMS_CHANGER_TYPE | Requires NTMS_USE_ACCESS to the computer. |
| NTMS_COMPUTER | Requires NTMS_USE_ACCESS to the computer. |
| NTMS_DRIVE | Requires NTMS_USE_ACCESS to the library. |
| NTMS_DRIVE_TYPE | Requires NTMS_USE_ACCESS to the computer. |
| NTMS_IEDOOR | Requires NTMS_USE_ACCESS to the library. |
| NTMS_IEPORT | Requires NTMS_USE_ACCESS to the library. |
| NTMS_LIBRARY | Requires NTMS_USE_ACCESS to the library. |
| NTMS_LIBREQUEST | Requires NTMS_USE_ACCESS to the library. |
| NTMS_LOGICAL_MEDIA | Requires NTMS_USE_ACCESS to the media pool of the logical media. |
| NTMS_MEDIA_POOL | Requires NTMS_USE_ACCESS to the media pool. |
| NTMS_MEDIA_TYPE | Requires NTMS_USE_ACCESS to the computer. |
| NTMS_OPREQUEST | Requires NTMS_USE_ACCESS to the computer. |
| NTMS_PARTITION | Requires NTMS_USE_ACCESS to the media pool of the side. |
| NTMS_PHYSICAL_MEDIA | Requires NTMS_USE_ACCESS to the media pool. |
| NTMS_STORAGESLOT | Requires NTMS_USE_ACCESS to the library. |
Note
The ntmsapi.h header defines GetNtmsObjectAttribute as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | ntmsapi.h |
| Library | Ntmsapi.lib |
| DLL | Ntmsapi.dll |