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Previous: <a rel="previous" accesskey="p" href="Disk-format.html#Disk-format">Disk format</a>,
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<h4 class="subsection">4.3.4 Modifying the on-disk cache</h4>
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It is safe to modify the on-disk cache while Polipo is running as long
as no file is ever modified in place. More precisely, the only safe
operations are to unlink (remove, delete) files in the disk cache, or
to atomically add new files to the cache (by performing an exclusive
open, or by using one of the ‘<samp><span class="samp">link</span></samp>’ or ‘<samp><span class="samp">rename</span></samp>’ system
calls). It is <em>not</em> safe to truncate a file in place.
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