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