binaryninja/commercial/scc-docs/fcntl.html

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<h1>fcntl</h1>
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<pre>int fcntl(int fd, int cmd, size_t arg);</pre>
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<div class="paragraph"><p>Issues a file descriptor command. The available commands vary by platform, but the most common commands, such as <span class="monospaced">F_SETFL</span>, are
available on all platforms. Returns the result of the command, the meaning of which varies by the command sent.</p></div>
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<td class="content">In the standard C runtime implementation of this function, the <span class="monospaced">arg</span> parameter is optional. This runtime always
requires the third argument. For commands that do not need the <span class="monospaced">arg</span> parameter, it will be ignored. The <span class="monospaced">__undefined</span>
intrinsic can be used for ignored parameters.</td>
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<h2 id="_see_also">See also</h2>
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<div class="paragraph"><p><a href="dup2.html">dup2</a>,
<a href="open.html">open</a>,
<a href="pipe.html">pipe</a>,
<a href="socket.html">socket</a></p></div>
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