InjectNtmsMedia Function

项目
06/09/2011

[Removable Storage Manager is no longer available as of Windows 7 and Windows Server 2008 R2.]

The InjectNtmsMedia function allows media to be inserted into the port of the specified library. If the library is busy, RSM queues InjectNtmsMedia and returns success.

Syntax

DWORD InjectNtmsMedia(
  __in   HANDLE hSession,
  __in   LPNTMS_GUID lpLibraryId,
  __out  LPNTMS_GUID lpInjectOperation,
  __in   DWORD dwAction
);

Parameters

hSession [in]
Handle to the session returned by the OpenNtmsSession function.
lpLibraryId [in]
Unique identifier of a library object.
lpInjectOperation [out]
GUID of the insert library operation. If dwAction is NTMS_INJECT_START, this parameter receives the GUID for the operation. If dwAction is NTMS_INJECT_STOP, this parameter must be set to the GUID for the operation to be stopped.

dwAction [in]
This parameter can be one of the following values.

Value	Meaning
NTMS_INJECT_START	Start the insert operation with a port. Media is repeatedly inserted until the time-out event occurs or the function is called again with NTMS_INJECT_STOP.
NTMS_INJECT_STOP	Terminate the insertion process prior to the time-out event lapsing.
NTMS_INJECT_RETRACT	Direct the library to retract the insert/eject port and check for media placed there by the operator.
NTMS_INJECT_START_MANY	Direct the insert/eject port to open continually and check for media placed there by the operator. If a medium is found, the insert/eject port is reopened to receive more media.

Return Value

This function returns one of the following values.

Value	Meaning
ERROR_ACCESS_DENIED	NTMS_CONTROL_ACCESS to the library is denied. Other security errors are also possible, but they would indicate a security subsystem error.
ERROR_DATABASE_FAILURE	The database is inaccessible or damaged.
ERROR_DATABASE_FULL	The database is full.
ERROR_DEVICE_NOT_AVAILABLE	The library is disabled.
ERROR_INVALID_HANDLE	The session ID is missing or is not valid.
ERROR_INVALID_OPERATION	A Stop action was performed on an operation ID that was not valid.
ERROR_INVALID_PARAMETER	The library ID or operation ID pointer is missing.
ERROR_LIBRARY_OFFLINE	The library ID refers to an offline library that cannot eject media.
ERROR_NOT_ENOUGH_MEMORY	There was an allocation failure during processing.
ERROR_SUCCESS	The insert is queued.

Remarks

This function returns to the application as soon as the insert request is queued.

If the library specified by the InjectNtmsMedia function does not have a port, use the AccessNtmsLibraryDoor function to insert and eject media.

This function cannot be used with the offline library.

Insert begins the process of inserting media into a library. Because libraries vary on the functionality of the NTMS_IEPORT object, each device may operate slightly differently. The following steps describe how RSM generally handles an inject:

Bb540685.wedge(en-us,VS.85).gif To insert media into a library

Allow/unlock/extend the NTMS_IEPORT.
Poll for a full NTMS_IEPORT, a retracted NTMS_IEPORT, a Stop Inject command, or a time-out value. If none of these have occurred, continue to wait. (Multi-cartridge insert/eject ports are not scanned for full status.)
When one of the preceding events occurs, the NTMS_IEPORT is locked, each medium in the NTMS_IEPORT is moved to a slot, and an identify medium command is queued for each medium.

If there are not enough slots for the media in the NTMS_IEPORT object, the media remains in the NTMS_IEPORT object and an Operator Request is posted to have media removed from the library.

If there are no free slots, the InjectNtmsMedia function receives an error.

Requirements

Minimum supported client	Windows 2000 Professional
Minimum supported server	Windows 2000 Server
End of client support	Windows Vista
End of server support	Windows Server 2008
Header	Ntmsapi.h
Library	Ntmsapi.lib
DLL	Ntmsapi.dll

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