FltCheckLockForReadAccess function (fltkernel.h)
The FltCheckLockForReadAccess routine determines whether the caller has read access to a locked byte range of a file.
Syntax
BOOLEAN FLTAPI FltCheckLockForReadAccess(
[in] PFILE_LOCK FileLock,
[in] PFLT_CALLBACK_DATA CallbackData
);
Parameters
[in] FileLock
Pointer to the FILE_LOCK structure for the file. This structure must have been initialized by a previous call to FltAllocateFileLock or FltInitializeFileLock.
[in] CallbackData
Pointer to the callback data (FLT_CALLBACK_DATA) structure for the IRP_MJ_READ operation.
Return value
FltCheckLockForReadAccess returns TRUE if the process has read access, FALSE otherwise.
Remarks
FltCheckLockForReadAccess checks whether the caller has read access to the entire byte range indicated in the callback data structure.
FltCheckLockForReadAccess does not complete the IRP_MJ_READ operation.
To allocate and initialize a new file lock structure, call FltAllocateFileLock.
To free an initialized FILE_LOCK structure, call FltFreeFileLock.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP SP2 |
| Minimum supported server | Windows Server 2003 SP1 |
| Target Platform | Universal |
| Header | fltkernel.h (include Fltkernel.h) |
| Library | FltMgr.lib |
| IRQL | <= APC_LEVEL |