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90 lines
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90 lines
3.5 KiB
HTML
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<title>fdopen (The Red Hat newlib C Library)</title>
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<a name="fdopen"></a>
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<p>
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Next: <a href="feof.html#feof" accesskey="n" rel="next">feof</a>, Previous: <a href="fcloseall.html#fcloseall" accesskey="p" rel="prev">fcloseall</a>, Up: <a href="Stdio.html#Stdio" accesskey="u" rel="up">Stdio</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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<a name="fdopen_002d_002d_002dturn-open-file-into-a-stream"></a>
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<h3 class="section">4.6 <code>fdopen</code>—turn open file into a stream</h3>
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<a name="index-fdopen"></a>
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<a name="index-_005ffdopen_005fr"></a>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <stdio.h>
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FILE *fdopen(int <var>fd</var>, const char *<var>mode</var>);
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FILE *_fdopen_r(struct _reent *<var>reent</var>,
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int <var>fd</var>, const char *<var>mode</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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<code>fdopen</code> produces a file descriptor of type <code>FILE *</code>, from a
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descriptor for an already-open file (returned, for example, by the
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system subroutine <code>open</code> rather than by <code>fopen</code>).
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The <var>mode</var> argument has the same meanings as in <code>fopen</code>.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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File pointer or <code>NULL</code>, as for <code>fopen</code>.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>fdopen</code> is ANSI.
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</p>
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<br>
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