FreeBSD 7.0 manual page repository

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

 

NAME

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

LIBRARY

      Standard C Library (libc, -lc)
 

SYNOPSIS

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

DESCRIPTION

      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 it has completed
      (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).  Otherwise, aio_return()
      returns -1 and sets errno to indicate the error condition.
 

ERRORS

      The aio_return() system call will fail if:
 
      [EINVAL]           The iocb argument does not reference a completed asyn‐
                         chronous 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)
 

STANDARDS

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

HISTORY

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

AUTHORS

      This manual page was written by Wes Peters 〈wes@softweyr.com〉.
 

Sections

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.