QueryServiceLockStatus
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QueryServiceLockStatus
The QueryServiceLockStatus function retrieves the lock status of the specified service control manager database.
BOOL <strong>QueryServiceLockStatus</strong>( SC_HANDLE <strong>hSCManager</strong>, LPQUERY_SERVICE_LOCK_STATUS <strong>lpLockStatus</strong>, DWORD <strong>cbBufSize</strong>, LPDWORD <strong>pcbBytesNeeded</strong>);
Parameters
- hSCManager
- [in] Handle to the service control manager database. The OpenSCManager function returns this handle, which must have the SC_MANAGER_QUERY_LOCK_STATUS access right. For more information, seeService Security and Access Rights.
- lpLockStatus
- [out] Pointer to a QUERY_SERVICE_LOCK_STATUS structure that receives the lock status of the specified database is returned, plus the strings to which its members point.
- cbBufSize
- [in] Size of the buffer pointed to by the lpLockStatus parameter, in bytes.
- pcbBytesNeeded
- [out] Pointer to a variable that receives the number of bytes needed to return all the lock status information, if the function fails.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
The following error codes can be set by the service control manager. Other error codes can be set by the registry functions that are called by the service control manager.
Remarks
The QueryServiceLockStatus function returns a QUERY_SERVICE_LOCK_STATUS structure that indicates whether the specified database is locked. If the database is locked, the structure provides the account name of the user that owns the lock and the length of time that the lock has been held.
A process calls the LockServiceDatabase function to acquire ownership of a service control manager database lock and the UnlockServiceDatabase function to release the lock.
Example Code
For an example, see Changing A Service Configuration.
Requirements
Declared in Winsvc.h; include Windows.h.
Link to Advapi32.lib.
Implemented as QueryServiceLockStatusW (Unicode) and QueryServiceLockStatusA (ANSI).
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