| .\" Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl) |
| .\" |
| .\" %%%LICENSE_START(GPLv2+_DOC_FULL) |
| .\" This is free documentation; you can redistribute it and/or |
| .\" modify it under the terms of the GNU General Public License as |
| .\" published by the Free Software Foundation; either version 2 of |
| .\" the License, or (at your option) any later version. |
| .\" |
| .\" The GNU General Public License's references to "object code" |
| .\" and "executables" are to be interpreted as the output of any |
| .\" document formatting or typesetting system, including |
| .\" intermediate and printed output. |
| .\" |
| .\" This manual is distributed in the hope that it will be useful, |
| .\" but WITHOUT ANY WARRANTY; without even the implied warranty of |
| .\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| .\" GNU General Public License for more details. |
| .\" |
| .\" You should have received a copy of the GNU General Public |
| .\" License along with this manual; if not, see |
| .\" <http://www.gnu.org/licenses/>. |
| .\" %%%LICENSE_END |
| .\" |
| .TH AIO_ERROR 3 2021-03-22 "" "Linux Programmer's Manual" |
| .SH NAME |
| aio_error \- get error status of asynchronous I/O operation |
| .SH SYNOPSIS |
| .nf |
| .B "#include <aio.h>" |
| .PP |
| .BI "int aio_error(const struct aiocb *" aiocbp ); |
| .PP |
| Link with \fI\-lrt\fP. |
| .fi |
| .SH DESCRIPTION |
| The |
| .BR aio_error () |
| function returns the error status for the asynchronous I/O request |
| with control block pointed to by |
| .IR aiocbp . |
| (See |
| .BR aio (7) |
| for a description of the |
| .I aiocb |
| structure.) |
| .SH RETURN VALUE |
| This function returns one of the following: |
| .IP * 3 |
| .BR EINPROGRESS , |
| if the request has not been |
| completed yet. |
| .IP * |
| .BR ECANCELED , |
| if the request was canceled. |
| .IP * |
| 0, if the request completed successfully. |
| .IP * |
| A positive error number, if the asynchronous I/O operation failed. |
| This is the same value that would have been stored in the |
| .I errno |
| variable in the case of a synchronous |
| .BR read (2), |
| .BR write (2), |
| .BR fsync (2), |
| or |
| .BR fdatasync (2) |
| call. |
| .SH ERRORS |
| .TP |
| .B EINVAL |
| .I aiocbp |
| does not point at a control block for an asynchronous I/O request |
| of which the return status (see |
| .BR aio_return (3)) |
| has not been retrieved yet. |
| .TP |
| .B ENOSYS |
| .BR aio_error () |
| is not implemented. |
| .SH VERSIONS |
| The |
| .BR aio_error () |
| function is available since glibc 2.1. |
| .SH ATTRIBUTES |
| For an explanation of the terms used in this section, see |
| .BR attributes (7). |
| .ad l |
| .nh |
| .TS |
| allbox; |
| lbx lb lb |
| l l l. |
| Interface Attribute Value |
| T{ |
| .BR aio_error () |
| T} Thread safety MT-Safe |
| .TE |
| .hy |
| .ad |
| .sp 1 |
| .SH CONFORMING TO |
| POSIX.1-2001, POSIX.1-2008. |
| .SH EXAMPLES |
| See |
| .BR aio (7). |
| .SH SEE ALSO |
| .BR aio_cancel (3), |
| .BR aio_fsync (3), |
| .BR aio_read (3), |
| .BR aio_return (3), |
| .BR aio_suspend (3), |
| .BR aio_write (3), |
| .BR lio_listio (3), |
| .BR aio (7) |
