FsRecGetDeviceSectors FsRecGetDeviceSectorSize FsRecReadBlock NDEBUG

BOOLEAN NTAPI FsRecGetDeviceSectorSize ( IN PDEVICE_OBJECT  DeviceObject, OUT PULONG  SectorSize  ) Definition at line 76 of file blockdev.c. Referenced by FsRecExt2FsControl(), FsRecNtfsFsControl(), FsRecUdfsFsControl(), and FsRecVfatFsControl(). { DISK_GEOMETRY DiskGeometry; IO_STATUS_BLOCK IoStatusBlock; KEVENT Event; PIRP Irp; NTSTATUS Status; ULONG ControlCode; PAGED_CODE(); /* Check what device we have */ switch (DeviceObject->DeviceType) { case FILE_DEVICE_CD_ROM: /* Use the CD IOCTL */ ControlCode = IOCTL_CDROM_GET_DRIVE_GEOMETRY; break; case FILE_DEVICE_DISK: /* Use the Disk IOCTL */ ControlCode = IOCTL_DISK_GET_DRIVE_GEOMETRY; break; default: /* Invalid device type */ return FALSE; } /* Build the information IRP */ KeInitializeEvent(&Event, SynchronizationEvent, FALSE); Irp = IoBuildDeviceIoControlRequest(ControlCode, DeviceObject, NULL, 0, &DiskGeometry, sizeof(DISK_GEOMETRY), FALSE, &Event, &IoStatusBlock); if (!Irp) return FALSE; /* Override verification */ IoGetNextIrpStackLocation(Irp)->Flags |= SL_OVERRIDE_VERIFY_VOLUME; /* Do the request */ Status = IoCallDriver(DeviceObject, Irp); if (Status == STATUS_PENDING) { /* Wait for completion */ KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL); Status = IoStatusBlock.Status; } /* Fail if we couldn't get the data */ if (!NT_SUCCESS(Status)) return FALSE; /* Return the sector size if it's valid */ if (!DiskGeometry.BytesPerSector) return FALSE; *SectorSize = DiskGeometry.BytesPerSector; return TRUE; }