.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. _FE_READ_UNCORRECTED_BLOCKS: ************************** FE_READ_UNCORRECTED_BLOCKS ************************** Name ==== FE_READ_UNCORRECTED_BLOCKS .. attention:: This ioctl is deprecated. Synopsis ======== .. c:function:: int ioctl( int fd, FE_READ_UNCORRECTED_BLOCKS, uint32_t *ublocks) :name: FE_READ_UNCORRECTED_BLOCKS 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 ` chapter.