FsRtlGetSectorSizeInformation - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// ntifs.h
NTSTATUS FsRtlGetSectorSizeInformation(
PDEVICE_OBJECT DeviceObject,
[out] PFILE_FS_SECTOR_SIZE_INFORMATION SectorSizeInfo
);
View the official Windows Driver Kit DDI referenceNo description available.
The FsRtlGetSectorSizeInformation routine retrieves the physical and logical sector size information for a storage volume.
DeviceObjectThe target device object for a storage device.
SectorSizeInfo [out]A pointer to a caller supplied FILE_FS_SECTOR_SIZE_INFORMATION structure.
FsRtlGetSectorSizeInformation returns STATUS_SUCCESS if the sector size information is returned in SectorSizeInfo. Otherwise, another appropriate NTSTATUS value is returned such as the following.
| Return code | Description |
|---|---|
| STATUS_BAD_DEVICE_TYPE | The storage device reported an invalid sector size. |
This routine is used by file system drivers to retrieve sector size information from the storage device containing the volume. A file system driver typically maintains the device object sent in RealDevice in its volume parameter block (VPD) for the storage volume.
Drivers other than file system drivers, can query sector size information using the FltQueryVolumeInformation or ZwQueryVolumeInformationFile routines, or by sending an IRP_MJ_QUERY_VOLUME_INFORMATION request and specifying FileFsSectorSizeInformation as the file system information class.
FILE_FS_SECTOR_SIZE_INFORMATION
IRP_MJ_QUERY_VOLUME_INFORMATION