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.. -*- coding: utf-8; mode: rst -*-
.. _FE_READ_UNCORRECTED_BLOCKS:
**************************
FE_READ_UNCORRECTED_BLOCKS
**************************
Name
====
FE_READ_UNCORRECTED_BLOCKS
Synopsis
========
.. cpp:function:: int ioctl( int fd, int request =FE_READ_UNCORRECTED_BLOCKS, uint32_t *ublocks)
Arguments
=========
.. flat-table::
:header-rows: 0
:stub-columns: 0
- .. row 1
- int fd
- File descriptor returned by a previous call to open().
- .. row 2
- int request
- Equals
:ref:`FE_READ_UNCORRECTED_BLOCKS`
for this command.
- .. row 3
- uint32_t \*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 and the ``errno`` variable is set
appropriately. The generic error codes are described at the
:ref:`Generic Error Codes <gen-errors>` chapter.
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