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<title>Issue 2607: [filesys.ts] [PDTS] Unhelpful comment for struct space_info</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="2607"><a href="lwg-defects.html#2607">2607</a>. [filesys.ts] [PDTS] Unhelpful comment for <code>struct space_info</code></h3>
<p><b>Section:</b> 6 [filesys.ts::fs.filesystem.synopsis], 15.32 [filesys.ts::fs.op.space] <b>Status:</b> <a href="lwg-active.html#TS">TS</a>
 <b>Submitter:</b> GB-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 other</b> <a href="lwg-index.html#filesys.ts::fs.filesystem.synopsis">issues</a> in [filesys.ts::fs.filesystem.synopsis].</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>Use of the term a 'non-privileged' process.
The comment for available in the struct space_info refers to: free space available to a
non-privileged process.
This seems quite specific to a POSIX implementation (on Windows, for instance, the
equivalent data would be user-specific but not directly related to privilege)</p>

<p>Remove the comment and add a note to 15.32 [fs.op.space]:
[<i>Note</i>: the precise meaning of available space is implementation dependent. &mdash; <i>end note</i>]</p>

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


<p>
"implementaton defined" and "operating system dependent"
    are well defined terms in this TS, but "implementation dependent" is not well defined.
    The meaning of <code>available</code> is operating system dependent, so that's the form used 
    in the proposed wording.
</p>

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




<p id="res-2607"><b>Proposed resolution:</b></p>

<ol>
<li>
  <p>
  <i>Change 6 [fs.filesystem.synopsis]:</i>
  </p>
  
  <blockquote>
     <p>
      <code>uintmax_t available; <del>// free space available to a non-privileged process</del></code>
    </p>
  </blockquote>
</li>

<li>
  <p>
    <p><i>Add Remarks to 15.32 [fs.op.space]:</i></p>
  </p>
  <blockquote>
    <p>
      <ins>
        <i>Remarks:</i> The value of member <code>space_info::available</code>
        is operating system dependent. [<i>Note:</i> <code>available</code> may be less than
        <code>free</code>. <i>&mdash; end note</i>]
      </ins>
    </p>
  </blockquote>
</li>
</ol>






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