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POCreating a unique temporary directory from pure C in windows
 

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  1. POCreating a unique temporary directory from pure C in windows
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    <p>I'd like to create a unique temporary directory in Windows from some C code (not C++ or C#). I want to do this so that I can put some temp files in the directory, and then delete them all easily when I'm done (by removing the directory recursively).</p> <p>I'm essentially looking for an equivalent of the linux <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/mkdtemp.html" rel="nofollow noreferrer"><code>mkdtemp</code></a> function. There is a C# answer <a href="https://stackoverflow.com/questions/278439/creating-a-temporary-directory-in-windows">here</a>, and responses on <a href="https://stackoverflow.com/questions/3379956/how-to-create-a-temporary-directory-in-c">this question</a> suggest using Boost. But since I'm using C, those solutions don't work for me.</p> <p>The best I've been able to come up with so far is to use <a href="http://msdn.microsoft.com/en-us/library/aa364991(v=vs.85).aspx" rel="nofollow noreferrer"><code>GetTempFileName</code></a> followed by <a href="http://msdn.microsoft.com/en-us/library/aa363855(v=vs.85).aspx" rel="nofollow noreferrer"><code>CreateDirectory</code></a>, but the problem there is that if I ask <a href="http://msdn.microsoft.com/en-us/library/aa364991(v=vs.85).aspx" rel="nofollow noreferrer"><code>GetTempFileName</code></a> to create a unique file name, it will also create the file (which I don't want, since I want to make a directory instead).</p> <p>Relatedly, there's <a href="http://msdn.microsoft.com/en-us/library/aa364992(v=vs.85).aspx" rel="nofollow noreferrer"><code>GetTempPath</code></a>, which returns the location of the user's temp folder from environment variables - but since I want to create my own directory that I can safely delete later, I still need to create a directory inside any path it would return.</p> <p>It looks like if I want a unique directory to be created, I'll have to create a temp file, get the name, delete it, and then create a directory with the same name - which sounds very messy. Any other ideas?</p>
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    1. USTimothy Jones
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    1. COThe idea in your final paragraph would not work - it would be subject to race conditions.
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