<table><tr><td style="">jtamate added inline comments.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D13898">View Revision</a></tr></table><br /><div><strong>INLINE COMMENTS</strong><div><div style="margin: 6px 0 12px 0;"><div style="border: 1px solid #C7CCD9; border-radius: 3px;"><div style="padding: 0; background: #F7F7F7; border-color: #e3e4e8; border-style: solid; border-width: 0 0 1px 0; margin: 0;"><div style="color: #74777d; background: #eff2f4; padding: 6px 8px; overflow: hidden;"><a style="float: right; text-decoration: none;" href="https://phabricator.kde.org/D13898#inline-73277">View Inline</a><span style="color: #4b4d51; font-weight: bold;">bruns</span> wrote in <span style="color: #4b4d51; font-weight: bold;">file.cpp:864</span></div>
<div style="margin: 8px 0; padding: 0 12px; color: #74777D;"><p style="padding: 0; margin: 8px;">This is broken (although not new).</p>
<p style="padding: 0; margin: 8px;"><tt style="background: #ebebeb; font-size: 13px;">buff.st_size</tt> is the size of the target name <strong>without</strong> null byte.<br />
readlink(..., .., bufferSize) thus will typically read exactly bufferSize bytes, thus n == bufferSize<br />
As a result, the 'good' case in the branches below will not pass, and a resize(bufferSize *= 2) and another readlink will happen.</p></div></div>
<div style="margin: 8px 0; padding: 0 12px;"><p style="padding: 0; margin: 8px;">According to the man page (2+3), readlink() <em>does not append a null byte to buf</em>.</p>
<div class="remarkup-code-block" style="margin: 12px 0;" data-code-lang="text" data-sigil="remarkup-code-block"><pre class="remarkup-code" style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; padding: 12px; margin: 0; background: rgba(71, 87, 120, 0.08);">It will (silently) truncate the contents (to a length of bufsiz characters), in case the buffer is too small to hold all of the contents.</pre></div></div></div></div></div></div><br /><div><strong>REPOSITORY</strong><div><div>R241 KIO</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D13898">https://phabricator.kde.org/D13898</a></div></div><br /><div><strong>To: </strong>jtamate, dfaure, Frameworks<br /><strong>Cc: </strong>bruns, kde-frameworks-devel, michaelh, ngraham<br /></div>