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| <h5 class="unnumberedsubsubsec">lseek</h5> |
| |
| <p><a name="index-lseek_002c-file_002di_002fo-system-call-2508"></a> |
| <dl> |
| <dt>Synopsis:<dd> |
| <pre class="smallexample"> long lseek (int fd, long offset, int flag); |
| </pre> |
| <br><dt>Request:<dd>‘<samp><span class="samp">Flseek,</span><var>fd</var><span class="samp">,</span><var>offset</var><span class="samp">,</span><var>flag</var></samp>’ |
| |
| <p><var>flag</var> is one of: |
| |
| <dl> |
| <dt><code>SEEK_SET</code><dd>The offset is set to <var>offset</var> bytes. |
| |
| <br><dt><code>SEEK_CUR</code><dd>The offset is set to its current location plus <var>offset</var> |
| bytes. |
| |
| <br><dt><code>SEEK_END</code><dd>The offset is set to the size of the file plus <var>offset</var> |
| bytes. |
| </dl> |
| |
| <br><dt>Return value:<dd>On success, the resulting unsigned offset in bytes from |
| the beginning of the file is returned. Otherwise, a |
| value of -1 is returned. |
| |
| <br><dt>Errors:<dd> |
| <dl> |
| <dt><code>EBADF</code><dd><var>fd</var> is not a valid open file descriptor. |
| |
| <br><dt><code>ESPIPE</code><dd><var>fd</var> is associated with the <span class="sc">gdb</span> console. |
| |
| <br><dt><code>EINVAL</code><dd><var>flag</var> is not a proper value. |
| |
| <br><dt><code>EINTR</code><dd>The call was interrupted by the user. |
| </dl> |
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