Changeset 73d91ac for chapter07/createfiles.xml

Timestamp:

12/05/2023 05:12:55 AM (7 months ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

xry111/arm64

Children:

00de269

Parents:

6b6a1b9 (diff), dc8572f (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge remote-tracking branch 'origin/trunk' into xry111/arm64

File:

• chapter07/createfiles.xml (modified) (1 diff)

chapter07/createfiles.xml

@@ -216 +216 @@
   the bad login attempts.</para>
 
-  <note><para>The <filename>/run/utmp</filename> file records the users that
-  are currently logged in.  This file is created dynamically in the boot
-  scripts.</para></note>
+  <!-- systemd no longer creates this -->
+  <note revision='sysv'><para>The <filename>/run/utmp</filename> file
+  records the users that are currently logged in.  This file is created
+  dynamically in the boot scripts.</para></note>
+
+  <!-- AFAIK they are not vital for system function, users requiring such
+       info should rely on systemd-logind or elogind or some custom PAM
+       module.  Maybe we can stop to create them at all.  -->
+  <note>
+    <para>
+      The <phrase revision='sysv'><filename>utmp</filename>,
+      </phrase><filename>wtmp</filename>, <filename>btmp</filename>, and
+      <filename>lastlog</filename> files use 32-bit integers for timestamps
+      and they'll be fundamentally broken after year 2038.  Many packages
+      have stopped using them and other packages are going to stop using
+      them.  It is probably best to consider them deprecated.
+    </para>
+  </note>
 
 </sect1>