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aio_error(2) [freebsd man page]

AIO_ERROR(2)						      BSD System Calls Manual						      AIO_ERROR(2)

aio_error -- retrieve error status of asynchronous I/O operation (REALTIME) LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <aio.h> int aio_error(const struct aiocb *iocb); DESCRIPTION
The aio_error() system call returns the error status of the asynchronous I/O request associated with the structure pointed to by iocb. RETURN VALUES
If the asynchronous I/O request has completed successfully, aio_error() returns 0. If the request has not yet completed, EINPROGRESS is returned. If the request has completed unsuccessfully the error status is returned as described in read(2), write(2), or fsync(2). On fail- ure, aio_error() returns -1 and sets errno to indicate the error condition. ERRORS
The aio_error() system call will fail if: [EINVAL] The iocb argument does not reference an outstanding asynchronous I/O request. SEE ALSO
aio_cancel(2), aio_read(2), aio_return(2), aio_suspend(2), aio_write(2), fsync(2), read(2), write(2), aio(4) STANDARDS
The aio_error() system call is expected to conform to the IEEE Std 1003.1 (``POSIX.1'') standard. HISTORY
The aio_error() system call first appeared in FreeBSD 3.0. AUTHORS
This manual page was written by Wes Peters <>. BSD
June 2, 1999 BSD

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AIO_ERROR(3)						     Linux Programmer's Manual						      AIO_ERROR(3)

aio_error - get error status of asynchronous I/O operation SYNOPSIS
#include <aio.h> int aio_error(const struct aiocb *aiocbp); Link with -lrt. DESCRIPTION
The aio_error() function returns the error status for the asynchronous I/O request with control block pointed to by aiocbp. (See aio(7) for a description of the aiocb structure.) RETURN VALUE
This function returns one of the following: * EINPROGRESS, if the request has not been completed yet. * ECANCELED, if the request was canceled. * 0, if the request completed successfully. * A positive error number, if the asynchronous I/O operation failed. This is the same value that would have been stored in the errno variable in the case of a synchronous read(2), write(2), fsync(2), or fdatasync(2) call. ERRORS
EINVAL aiocbp does not point at a control block for an asynchronous I/O request of which the return status (see aio_return(3)) has not been retrieved yet. ENOSYS aio_error() is not implemented. VERSIONS
The aio_error() function is available since glibc 2.1. ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7). +------------+---------------+---------+ |Interface | Attribute | Value | +------------+---------------+---------+ |aio_error() | Thread safety | MT-Safe | +------------+---------------+---------+ CONFORMING TO
POSIX.1-2001, POSIX.1-2008. EXAMPLE
See aio(7). SEE ALSO
aio_cancel(3), aio_fsync(3), aio_read(3), aio_return(3), aio_suspend(3), aio_write(3), lio_listio(3), aio(7) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at 2015-03-02 AIO_ERROR(3)

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