89 lines
3.4 KiB
HTML
89 lines
3.4 KiB
HTML
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<html lang="en">
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<head>
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<title>lseek - Debugging with GDB</title>
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<meta name="description" content="Debugging with GDB">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="List-of-Supported-Calls.html#List-of-Supported-Calls" title="List of Supported Calls">
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<link rel="prev" href="write.html#write" title="write">
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</head>
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<body>
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<div class="node">
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<a name="lseek"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="rename.html#rename">rename</a>,
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Previous: <a rel="previous" accesskey="p" href="write.html#write">write</a>,
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Up: <a rel="up" accesskey="u" href="List-of-Supported-Calls.html#List-of-Supported-Calls">List of Supported Calls</a>
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<hr>
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</div>
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<h5 class="unnumberedsubsubsec">lseek</h5>
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<p><a name="index-lseek_002c-file_002di_002fo-system-call-3608"></a>
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<dl>
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<dt>Synopsis:<dd>
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<pre class="smallexample"> long lseek (int fd, long offset, int flag);
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</pre>
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<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>’
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<p><var>flag</var> is one of:
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<dl>
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<dt><code>SEEK_SET</code><dd>The offset is set to <var>offset</var> bytes.
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<br><dt><code>SEEK_CUR</code><dd>The offset is set to its current location plus <var>offset</var>
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bytes.
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<br><dt><code>SEEK_END</code><dd>The offset is set to the size of the file plus <var>offset</var>
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bytes.
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</dl>
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<br><dt>Return value:<dd>On success, the resulting unsigned offset in bytes from
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the beginning of the file is returned. Otherwise, a
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value of -1 is returned.
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<br><dt>Errors:<dd>
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<dl>
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<dt><code>EBADF</code><dd><var>fd</var> is not a valid open file descriptor.
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<br><dt><code>ESPIPE</code><dd><var>fd</var> is associated with the <span class="sc">gdb</span> console.
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<br><dt><code>EINVAL</code><dd><var>flag</var> is not a proper value.
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<br><dt><code>EINTR</code><dd>The call was interrupted by the user.
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</dl>
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</dl>
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</body></html>
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