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

See also

FsRtlAllocateFileLock

FsRtlFastCheckLockForRead

FsRtlInitializeFileLock