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aio_return - retrieve return status of asynchronous I/O operation (REAL‐



      aio_return - retrieve return status of asynchronous I/O operation (REAL‐


      Standard C Library (libc, -lc)


      #include <aio.h>
      aio_return(struct aiocb *iocb);


      The aio_return() system call returns the final status of the asynchronous
      I/O request associated with the structure pointed to by iocb.
      The aio_return() system call should only be called once, to obtain the
      final status of an asynchronous I/O operation once aio_error(2) returns
      something other than EINPROGRESS.
      If the asynchronous I/O request has completed, the status is returned as
      described in read(2), write(2), or fsync(2).  On failure, aio_return()
      returns -1 and sets errno to indicate the error condition.


      The aio_return() system call will fail if:
      [EINVAL]           The iocb argument does not reference an outstanding
                         asynchronous I/O request.
      aio_cancel(2), aio_error(2), aio_suspend(2), aio_waitcomplete(2),
      aio_write(2), fsync(2), read(2), write(2), aio(4)


      The aio_return() system call is expected to conform to the IEEE Std
      1003.1 (“POSIX.1”) standard.


      The aio_return() system call first appeared in FreeBSD 3.0.


      This manual page was written by Wes Peters 〈〉.


Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.