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.\" Copyright (C) 2003 Free Software Foundation, Inc.
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.\" This file is distributed according to the GNU General Public License.
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.\" See the file COPYING in the top level source directory for details.
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.\"
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.\" .IP "\\$1" \\$2
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.\" ..
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2004-11-03 13:51:07 +00:00
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.TH "IO_SUBMIT" 2 "2003-02-21" "Linux 2.4" "Linux Programmer's Manual"
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.SH NAME
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io_submit \- submit asynchronous I/O blocks for processing
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.SH "SYNOPSIS"
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.nf
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.\" .ad l
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.\" .hy 0
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.B #include <linux/aio.h>
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.sp
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.\" .HP 16
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.BI "int io_submit(aio_context_t " ctx_id ", long " nr \
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", struct iocb **" iocbpp );
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.\" .ad
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.\" .hy
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.fi
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.SH "DESCRIPTION"
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.PP
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\fBio_submit\fR() queues \fInr\fR I/O request blocks for processing in
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the AIO context \fIctx_id\fR. \fIiocbpp\fR should be an array of
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\fInr\fR AIO request blocks,
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which will be submitted to context \fIctx_id\fR.
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.SH "RETURN VALUE"
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.PP
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On success,
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\fBio_submit\fR() returns the number of \fIiocb\fRs submitted (which may be
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0 if \fInr\fR is zero);
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on failure, it returns one of the errors listed under ERRORS.
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.SH "ERRORS"
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.TP
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.B EINVAL
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The \fIaio_context\fR specified by \fIctx_id\fR is invalid.
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\fInr\fR is less than 0. The \fIiocb\fR at *iocbpp[0] is not properly
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initialized, or the operation specified is invalid for the file descriptor
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in the \fIiocb\fR.
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.TP
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.B EFAULT
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One of the data structures points to invalid data.
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.TP
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.B EBADF
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The file descriptor specified in the first \fIiocb\fR is invalid.
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.TP
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.B EAGAIN
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Insufficient resources are available to queue any \fIiocb\fRs.
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.TP
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.B ENOSYS
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\fBio_submit\fR() is not implemented on this architecture.
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.SH "CONFORMING TO"
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.PP
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\fBio_submit\fR() is Linux specific and should not be used in
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programs that are intended to be portable.
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.SH "VERSIONS"
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.PP
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The asynchronous I/O system calls first appeared in Linux 2.5, August 2002.
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.SH "SEE ALSO"
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.PP
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\fBio_setup\fR(2), \fBio_destroy\fR(2), \fBio_getevents\fR(2),
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\fBio_cancel\fR(2).
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.\" .SH "NOTES"
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.\" .PP
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.\" The asynchronous I/O system calls were written by Benjamin LaHaise.
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.\" .SH AUTHOR
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.\" Kent Yoder.
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