| .. -*- 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 |
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| |
| - .. row 1 |
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| - 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. |