From: Ben Hutchings <ben@decadent.org.uk>
Date: Thu, 28 Aug 2014 00:06:57 +0000 (-0700)
Subject: Add slide about O_TMPFILE
X-Git-Tag: debconf2014~13
X-Git-Url: https://git.decadent.org.uk/gitweb/?a=commitdiff_plain;h=37737534c7864f542285f6e7aeefdf769c61a352;p=kernel-news-talk.git

Add slide about O_TMPFILE
---

diff --git a/index.html b/index.html
index 0e7b205..ef03341 100644
--- a/index.html
+++ b/index.html
@@ -147,6 +147,29 @@
   </ul>
 </div>
 
+<div class="slide">
+  <h1>Unnamed temporary files [3.11]</h1>
+  <ul>
+    <li>
+      Open directory with option <tt>O_TMPFILE</tt> to create an
+      unnamed temporary file on that filesystem
+    </li>
+    <li>
+      As with <tt>tmpfile()</tt>, the file disppears on
+      last <tt>close()</tt>
+    </li>
+    <li>
+      File can be linked into the filesystem using
+      <tt>linkat(..., AT_EMPTY_PATH)</tt>, allowing for 'atomic'
+      creation of file with complete contents and metadata
+    </li>
+    <li>
+      Not supported on all filesystem types, so you will usually need
+      a fallback
+    </li>
+  </ul>
+</div>
+
 <div class="slide">
   <h1>Questions?</h1>
 </div>