| Standards / Extensions | C or C++ | Dependencies |
|---|---|---|
Single UNIX Specification, Version 2 |
both | OS/390 V2R7 |
#define _XOPEN_SOURCE 500
#include <aio.h>
int aio_error(const struct aiocb *aiocbp);The aio_error() function returns the error status associated with the aiocb structure referenced by the aiocbp argument. The error status for an asynchronous I/O operation is the errno value that would be set by the corresponding read(), or write() operation. If the operation has not yet completed, then the error status will be equal to EINPROGRESS.
If the asynchronous I/O operation has completed successfully, aio_error() returns 0.
If the asynchronous I/O operation has completed unsuccessfully, aio_error() returns the error status as described for read(), or write().
If the asynchronous I/O operation has not yet completed, then EINPROGRESS is returned.
aio_error() does not set errno.
When the errno is returned is not EINPROGRESS and not zero, the errno2 set by either read() or write() can be retrieved by using the __errno2() function.