freebsd-dev/lib/libc/sys/aio_error.2

.\" Copyright (c) 1999 Softweyr LLC.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY Softweyr LLC AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL Softweyr LLC OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
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.\" $FreeBSD$
.\"
.Dd June 2, 1999
.Dt AIO_ERROR 2
.Os
.Sh NAME
.Nm aio_error
.Nd retrieve error status of asynchronous I/O operation (REALTIME)
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In aio.h
.Ft int
.Fn aio_error "const struct aiocb *iocb"
.Sh DESCRIPTION
The
.Fn aio_error
system call returns the error status of the asynchronous I/O request
associated with the structure pointed to by
.Fa iocb .
.Sh RETURN VALUES
If the asynchronous I/O request has completed successfully,
.Fn aio_error
returns 0.  If the request has not yet completed,
.Er EINPROGRESS
is returned.  If the request has completed unsuccessfully the error
status is returned as described in
.Xr read 2 ,
.Xr write 2 ,
or
.Xr fsync 2
is returned.
On failure,
.Fn aio_error
returns
.Dv -1
and sets
.Dv errno
to indicate the error condition.
.Sh ERRORS
The
.Fn aio_error
system call will fail if:
.Bl -tag -width Er
.It Bq Er EINVAL
The
.Fa iocb
argument
does not reference an outstanding asynchronous I/O request.
.El
.Sh SEE ALSO
.Xr aio_cancel 2 ,
.Xr aio_read 2 ,
.Xr aio_return 2 ,
.Xr aio_suspend 2 ,
.Xr aio_write 2 ,
.Xr fsync 2 ,
.Xr read 2 ,
.Xr write 2 ,
.Xr aio 4
.Sh STANDARDS
The
.Fn aio_error
system call
is expected to conform to the
.St -p1003.1
standard.
.Sh HISTORY
The
.Fn aio_error
system call first appeared in
.Fx 3.0 .
.Sh AUTHORS
This
manual page was written by
.An Wes Peters Aq wes@softweyr.com .
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.\" Copyright (c) 1999 Softweyr LLC.`
			`.\" All rights reserved.`
			`.\"`
			`.\" Redistribution and use in source and binary forms, with or without`
			`.\" modification, are permitted provided that the following conditions`
			`.\" are met:`
			`.\" 1. Redistributions of source code must retain the above copyright`
			`.\" notice, this list of conditions and the following disclaimer.`
			`.\" 2. Redistributions in binary form must reproduce the above copyright`
			`.\" notice, this list of conditions and the following disclaimer in the`
			`.\" documentation and/or other materials provided with the distribution.`
			`.\"`
			.\" THIS SOFTWARE IS PROVIDED BY Softweyr LLC AND CONTRIBUTORS ``AS IS'' AND
			`.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE`
			`.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE`
			`.\" ARE DISCLAIMED. IN NO EVENT SHALL Softweyr LLC OR CONTRIBUTORS BE LIABLE`
			`.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL`
			`.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS`
			`.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)`
			`.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT`
			`.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY`
			`.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF`
			`.\" SUCH DAMAGE.`
			`.\"`
$Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00			`.\" $FreeBSD$`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.\"`
			`.Dd June 2, 1999`
			`.Dt AIO_ERROR 2`
			`.Os`
			`.Sh NAME`
			`.Nm aio_error`
Fix typos/spelling errors. 1999-07-01 21:09:57 +00:00			`.Nd retrieve error status of asynchronous I/O operation (REALTIME)`
Introduce ".Lb" macro to libc manpages. More libraries manpages updates following. 2000-04-21 09:42:15 +00:00			`.Sh LIBRARY`
			`.Lb libc`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.Sh SYNOPSIS`
mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00			`.In aio.h`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.Ft int`
Fixed missing `const' in synopsis. 1999-12-23 16:46:34 +00:00			`.Fn aio_error "const struct aiocb *iocb"`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.Sh DESCRIPTION`
			`The`
			`.Fn aio_error`
mdoc(7) police: Tidy up the syscall language. Stop calling system calls "function calls". Use "The .Fn system call" a-la "The .Nm utility". When referring to a non-BSD implementation in the HISTORY section, call syscall a function, to be safe. 2002-12-18 09:22:32 +00:00			`system call returns the error status of the asynchronous I/O request`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`associated with the structure pointed to by`
Replace .Va, .Ar and .Nm with .Fa or .Va where necessary, examples: ``.Ar errno'' -> ``.Va errno'' ``.Nm ops'' -> ``.Fa ops'' ``.Va fd'' -> ``.Fa fd'' 2000-06-23 05:05:44 +00:00			`.Fa iocb .`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.Sh RETURN VALUES`
			`If the asynchronous I/O request has completed successfully,`
			`.Fn aio_error`
			`returns 0. If the request has not yet completed,`
Remove whitespace at EOL. 2001-07-15 07:53:42 +00:00			`.Er EINPROGRESS`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`is returned. If the request has completed unsuccessfully the error`
			`status is returned as described in`
			`.Xr read 2 ,`
			`.Xr write 2 ,`
			`or`
			`.Xr fsync 2`
			`is returned.`
			`On failure,`
			`.Fn aio_error`
			`returns`
			`.Dv -1`
			`and sets`
			`.Dv errno`
			`to indicate the error condition.`
			`.Sh ERRORS`
			`The`
			`.Fn aio_error`
mdoc(7) police: Tidy up the syscall language. Stop calling system calls "function calls". Use "The .Fn system call" a-la "The .Nm utility". When referring to a non-BSD implementation in the HISTORY section, call syscall a function, to be safe. 2002-12-18 09:22:32 +00:00			`system call will fail if:`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.Bl -tag -width Er`
			`.It Bq Er EINVAL`
mdoc(7) police: "The .Fa argument.". 2002-12-19 09:40:28 +00:00			`The`
Replace .Va, .Ar and .Nm with .Fa or .Va where necessary, examples: ``.Ar errno'' -> ``.Va errno'' ``.Nm ops'' -> ``.Fa ops'' ``.Va fd'' -> ``.Fa fd'' 2000-06-23 05:05:44 +00:00			`.Fa iocb`
mdoc(7) police: "The .Fa argument.". 2002-12-19 09:40:28 +00:00			`argument`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`does not reference an outstanding asynchronous I/O request.`
			`.El`
			`.Sh SEE ALSO`
			`.Xr aio_cancel 2 ,`
Various man page cleanup: - Sort xrefs - FreeBSD.ORG -> FreeBSD.org - Be consistent with section names as outlines in mdoc(7) - Other misc mdoc cleanup. PR: doc/13144 Submitted by: Alexy M. Zelkin <phantom@cris.net> 1999-08-15 09:51:25 +00:00			`.Xr aio_read 2 ,`
			`.Xr aio_return 2 ,`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.Xr aio_suspend 2 ,`
Various man page cleanup: - Sort xrefs - FreeBSD.ORG -> FreeBSD.org - Be consistent with section names as outlines in mdoc(7) - Other misc mdoc cleanup. PR: doc/13144 Submitted by: Alexy M. Zelkin <phantom@cris.net> 1999-08-15 09:51:25 +00:00			`.Xr aio_write 2 ,`
			`.Xr fsync 2 ,`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.Xr read 2 ,`
* Modernize aio(4), providing instructions for static and dynamic kernel linking. * Fix disorder in the SEE ALSO sections of aio_(2). Remove unnecessary cross-references from the SEE ALSO sections of aio_(2); config(8), kldload(8) and kldunload(8) are cross-referenced from aio(4). Remove the KERNEL OPTIONS sections from aio_*(2), now that these pages cross-reference aio(4), which contains suitable kernel linking reference material. 2002-10-24 12:57:05 +00:00			`.Xr write 2 ,`
			`.Xr aio 4`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.Sh STANDARDS`
mdoc(7) police: Tidy up the syscall language. Stop calling system calls "function calls". Use "The .Fn system call" a-la "The .Nm utility". When referring to a non-BSD implementation in the HISTORY section, call syscall a function, to be safe. 2002-12-18 09:22:32 +00:00			`The`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.Fn aio_error`
mdoc(7) police: Tidy up the syscall language. Stop calling system calls "function calls". Use "The .Fn system call" a-la "The .Nm utility". When referring to a non-BSD implementation in the HISTORY section, call syscall a function, to be safe. 2002-12-18 09:22:32 +00:00			`system call`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`is expected to conform to the`
Refer to 1003.1 instead of 1003.2 in the Standards section. 2003-01-13 10:37:11 +00:00			`.St -p1003.1`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`standard.`
			`.Sh HISTORY`
			`The`
mdoc(7) police: Tidy up the syscall language. Stop calling system calls "function calls". Use "The .Fn system call" a-la "The .Nm utility". When referring to a non-BSD implementation in the HISTORY section, call syscall a function, to be safe. 2002-12-18 09:22:32 +00:00			`.Fn aio_error`
			`system call first appeared in`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`.Fx 3.0 .`
Various man page cleanup: - Sort xrefs - FreeBSD.ORG -> FreeBSD.org - Be consistent with section names as outlines in mdoc(7) - Other misc mdoc cleanup. PR: doc/13144 Submitted by: Alexy M. Zelkin <phantom@cris.net> 1999-08-15 09:51:25 +00:00			`.Sh AUTHORS`
Add mising aio_* man pages. Fixed a minor typo in aio_read.2, and "corrected" statement of Posix conformance. 1999-07-01 19:58:12 +00:00			`This`
			`manual page was written by`
			`.An Wes Peters Aq wes@softweyr.com .`