[blfs-book] r21392 - trunk/BOOK/server/major

[xry111--- via blfs-book]

Author: xry111
Date: Tue Mar 26 11:41:55 2019
New Revision: 21392

Log:
Workaround vsftpd seccomp issue on recent kernels

Modified:
   trunk/BOOK/server/major/vsftpd.xml

Modified: trunk/BOOK/server/major/vsftpd.xml
==============================================================================
--- trunk/BOOK/server/major/vsftpd.xml  Tue Mar 26 09:19:13 2019        (r21391)
+++ trunk/BOOK/server/major/vsftpd.xml  Tue Mar 26 11:41:55 2019        (r21392)
@@ -181,6 +181,18 @@
 secure_chroot_dir=&vsftpd-empty;</literal>
 EOF</userinput></screen>
 
+      <!-- recheck this issue when vsftpd is updated -->
+      <para>The vsftpd daemon uses seccomp to improve security by default.
+      But it's known to cause vsftpd unable to handle ftp
+      <literal>LIST</literal> command with recent kernel versions.  Append
+      a line to <filename>/etc/vsftpd.conf</filename> (as the
+      <systemitem class="username">root</systemitem> user) to disable
+      seccomp and workaround this issue:</para>
+
+<screen role="root"><userinput>cat &gt;&gt; /etc/vsftpd.conf &lt;&lt; "EOF"
+<literal>seccomp_sandbox=NO</literal>
+EOF</userinput></screen>
+
       <para>To enable local logins, append the following to the
       <filename>/etc/vsftpd.conf</filename> file (as the
       <systemitem class="username">root</systemitem> user):</para>
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