man/man3/opentemp.html


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<title>opentemp(3) - Plan 9 from User Space</title>
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<tr><td width=20><td><b>OPENTEMP(3)</b><td align=right><b>OPENTEMP(3)</b>
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    <br>
<p><font size=+1><b>NAME     </b></font><br>

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    opentemp &ndash; create a uniquely-named file<br>
    
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<p><font size=+1><b>SYNOPSIS     </b></font><br>

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    <tt><font size=+1>#include &lt;u.h&gt;<br>
    #include &lt;libc.h&gt; 
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    <tt><font size=+1>int opentemp(char *template)<br>
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<p><font size=+1><b>DESCRIPTION     </b></font><br>

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    <i>Opentemp</i> replaces <i>template</i> by a unique file name, and returns
    the address of the template. The template should look like a file
    name with eleven trailing <tt><font size=+1>X</font></tt>s. The <tt><font size=+1>X</font></tt>s are replaced by a letter
    followed by the current process id. Letters from <tt><font size=+1>a</font></tt> to <tt><font size=+1>z</font></tt> are tried
    until the name of a file that does not yet exist (see <a href="../man2/access.html"><i>access</i>(2)</a>)
    is
    generated. <i>Opentemp</i> then creates the file for reading and writing
    and returns the file descriptor. 
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    If no such name can be generated, <i>opentemp</i> returns &ndash;1. 
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    <i>Opentemp</i> avoids races. Two simultaneous calls to <i>opentemp</i> will
    never return the same name.<br>
    
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<p><font size=+1><b>SOURCE     </b></font><br>

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    <tt><font size=+1>/usr/local/plan9/src/lib9/opentemp.c<br>
    </font></tt>
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<p><font size=+1><b>SEE ALSO     </b></font><br>

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    <i>create</i> in <a href="../man3/open.html"><i>open</i>(3)</a><br>
    
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