FsRtlFastCheckLockForWrite function (ntifs.h)
The FsRtlFastCheckLockForWrite routine determines whether the specified process has write access to a locked byte range of a file.
Syntax
BOOLEAN FsRtlFastCheckLockForWrite(
[in] PFILE_LOCK FileLock,
[in] PLARGE_INTEGER StartingByte,
[in] PLARGE_INTEGER Length,
[in] ULONG Key,
[in] PVOID FileObject,
[in] PVOID ProcessId
);
Parameters
[in] FileLock
A pointer to the FILE_LOCK structure for the file. This structure must have been initialized by a previous call to FsRtlAllocateFileLock or FsRtlInitializeFileLock.
[in] StartingByte
A pointer to a variable that specifies the starting byte offset within the file of the byte range to check.
[in] Length
A pointer to a variable that specifies the length, in bytes, of the range to check.
[in] Key
The key for the byte range lock.
[in] FileObject
A pointer to the file object for the file.
[in] ProcessId
A pointer to the EPROCESS for the process.
Return value
The FsRtlFastCheckLockForWrite routine returns TRUE if the specified process has write access, FALSE otherwise.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 |
| Target Platform | Universal |
| Header | ntifs.h (include FltKernel.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | <= APC_LEVEL |
| DDI compliance rules | HwStorPortProhibitedDDIs(storport) |