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Random man page:
aio_return(2) -- return status of an asynchronous I/O operation
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The aio_return() function returns the return status associated with the aiocb structure referenced by the aiocbp argument. The return value for an asynchronous I/O operation is the value that would be set by the corresponding read(), write(), or fsync() operation. If the operation has been queued but not completed, aio_return() returns -1 and errno is set to EINPROGRESS. A successful aio_return() ... |
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