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<title>Issue 2605: [filesys.ts] [PDTS] Parent of root directory unspecified</title>
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<p><em>This page is a snapshot from the LWG issues list, see the <a href="lwg-active.html">Library Active Issues List</a> for more information and the meaning of <a href="lwg-active.html#TS">TS</a> status.</em></p>
<h3 id="2605"><a href="lwg-defects.html#2605">2605</a>. [filesys.ts] [PDTS] Parent of root directory unspecified</h3>
<p><b>Section:</b> 8.1 [filesys.ts::path.generic] <b>Status:</b> <a href="lwg-active.html#TS">TS</a>
 <b>Submitter:</b> CH-4 <b>Opened:</b> 2014-01-20 <b>Last modified:</b> 2017-07-30</p>
<p><b>Priority: </b>Not Prioritized
</p>
<p><b>View all issues with</b> <a href="lwg-status.html#TS">TS</a> status.</p>
<p><b>Discussion:</b></p>
<p><b>Addresses: filesys.ts</b></p>
<p>8.1 [path.generic] says:
"The filename dot-dot is treated as a reference to the parent directory." So it must be
specified what "/.." and "/../.." refer to.</p>

<p>Add a statement what the parent directory of the root directory is.</p>

  <p><i>[2014-02-07, Beman Dawes suggests wording]</i></p>

  
  <p><i>[
    2014-02-11 Issaquah: Implementation defined. See wiki notes for rationale.
    Beman to provide wording for review next meeting.
  ]</i></p>


  <p><i>[
    2014-05-22 Beman provides wording, taken directly from POSIX.
    See pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_xbd_chap04.html#tag_21_04_12
  ]</i></p>




<p id="res-2605"><b>Proposed resolution:</b></p>

<ol>
<li>
<p>Change 8.1 [path.generic]:</p>

<blockquote><p>
The filename <i>dot</i> is treated as a reference to the current directory.
The filename <i>dot-dot</i> is treated as a reference to the parent directory.
<ins>What the filename <i>dot-dot</i> refers to relative to <i>root-directory</i> is implementation-defined.</ins>
Specific filenames may have special meanings for a particular operating system.
</p></blockquote>
</li>
</ol>






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