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<td bgcolor="#cccccc"><span class="style1" style="margin-left:5px">sys_io_cancel <span class="style2">[fs/aio.c] </span></span></td>
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<td><p style="margin-left:22px;margin-top:0px"><br />
Cancels an outstanding asynchronous IO
operation previously submitted with the <a href="248.html">sys_io_submit </a></p>
<p style="margin-left:10px"><strong>Arguments</strong></p>
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<td width="6%" valign="top"><em>eax</em></td>
<td width="94%">249</td>
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<td valign="top"><em>ebx</em></td>
<td>The AIO context ID of the operation to be canceled. </td>
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<td valign="top"><em>ecx</em></td>
<td>Pointer to an
<em>iocb</em> structure:
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<td><code>struc iocb <br>
{<br />
aio_data rq 1 ; data to be returned in event's data<br />
aio_key rd 1 <br />
aio_reserved1 rd 1 <br />
aio_lio_opcode rw 1 <br />
aio_reqprio rw 1 <br />
aio_fildes rd 1 <br />
aio_buf rq 1 <br />
aio_nbytes rq 1 <br />
aio_offset rq 1 <br />
aio_reserved2 rq 1 <br />
aio_reserved3 rq 1 <br />
}</code> </td>
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<td valign="top"><em>edx</em></td>
<td>Pointer to an <em>io_event</em> structure:
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<td><code>struc io_event<br>
{<br />
data rq 1 ; the data field from the iocb<br />
obj rq 1 ; what iocb this event came from<br />
res rq 1 ; result code for this event <br />
res2 rq 1 ; secondary result <br />
}
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<p style="margin-left:10px" ><strong>Return values</strong></p>
<p style="margin-left:22px;margin-right:10px" >If the system call succeeds the return value is 0.<br />
If the system call fails the return value is one of the following <em>errno</em> values:</p>
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<td width="10%" valign="top"><code>-EAGAIN</code></td>
<td width="90%"><code>The <em>iocb</em> specified was not canceled. </code></td>
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<td valign="top"><code>-EINVAL</code></td>
<td><code>The AIO context specified by <em>ebx</em> is invalid. </code></td>
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<td valign="top"><code>-EFAULT</code></td>
<td><code>One of the structures points to invalid data. </code></td>
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<p style="margin-left:10px"><strong>Remarks</strong></p>
<p style="margin-left:22px">n/a</p>
<p style="margin-left:10px"><strong>Compatibility</strong></p>
<p style="margin-left:22px">n/a</p></td>
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