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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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