FreeBSD 4.6.2 manual page repository

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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() function returns the final status of the asynchronous
      I/O request associated with the structure pointed to by iocb.
      aio_return() should only be called once, to obtain the final status of an
      asynchronous I/O operation once aio_error(2) returns something other than
      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.
      aio_cancel(2), aio_error(2), aio_read(2), aio_suspend(2), aio_write(2),
      fsync(2), read(2), write(2)


      The aio_return() function will fail if:
      [EINVAL]           iocb does not reference an outstanding asynchronous
                         I/O request.


      aio_return() is expected to conform to the IEEE Std 1003.2 (“POSIX.2”)


      The aio_return function 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.

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