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ff_filelength()

[FreeRTOS+FAT Standard API Reference]

ff_stdio.h
size_t ff_filelength( FF_FILE *pxStream );
		

Return the length in bytes of a file that has been opened for reading.

Parameters:

pxStream   A pointer to the file being queried. This will be the same pointer returned by ff_fopen() when the file was originally opened.

Returns:

If the length of the file was successfully obtained then the file’s length is returned.

If the length of the file could not be obtained then 0 is returned and the task’s errno is set to indicate the reason. The length of a file can only be obtained if the file is open for reading and the file’s length fits in a variable of type size_t.


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