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.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
.. c:namespace:: DTV.fe
.. _FE_READ_UNCORRECTED_BLOCKS:
**************************
FE_READ_UNCORRECTED_BLOCKS
**************************
Name
====
FE_READ_UNCORRECTED_BLOCKS
.. attention:: This ioctl is deprecated.
Synopsis
========
.. c:macro:: FE_READ_UNCORRECTED_BLOCKS
``int ioctl(int fd, FE_READ_UNCORRECTED_BLOCKS, uint32_t *ublocks)``
Arguments
=========
``fd``
File descriptor returned by :c:func:`open()`.
``ublocks``
The total number of uncorrected blocks seen by the driver so far.
Description
===========
This ioctl call returns the number of uncorrected blocks detected by the
device driver during its lifetime. For meaningful measurements, the
increment in block count during a specific time interval should be
calculated. For this command, read-only access to the device is
sufficient.
Return Value
============
On success 0 is returned.
On error -1 is returned, and the ``errno`` variable is set
appropriately.
Generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.
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