svn commit: samba-docs r531 - in trunk/Samba-HOWTO-Collection: .

[jht at samba.org]

Author: jht
Date: 2005-05-03 10:22:56 +0000 (Tue, 03 May 2005)
New Revision: 531

WebSVN: http://websvn.samba.org/cgi-bin/viewcvs.cgi?view=rev&root=samba-docs&rev=531

Log:
adding feedback.
Modified:
   trunk/Samba-HOWTO-Collection/TOSHARG-AdvancedNetworkAdmin.xml
   trunk/Samba-HOWTO-Collection/TOSHARG-Bugs.xml


Changeset:
Modified: trunk/Samba-HOWTO-Collection/TOSHARG-AdvancedNetworkAdmin.xml
===================================================================
--- trunk/Samba-HOWTO-Collection/TOSHARG-AdvancedNetworkAdmin.xml	2005-05-02 15:47:25 UTC (rev 530)
+++ trunk/Samba-HOWTO-Collection/TOSHARG-AdvancedNetworkAdmin.xml	2005-05-03 10:22:56 UTC (rev 531)
@@ -347,6 +347,55 @@
 </para>
 </sect2>
 
+<sect2>
+	<title>Limiting Logon Connections</title>
+
+	<para>
+		Sometimes it is necessary to limit the number of concurrent connections to a
+		Samba shared resource. For example, a site may wish to permit only one network
+		logon per user.
+	</para>
+
+	<para>
+		The Samba <parameter>preexec script</parameter> parameter can be used to permit only one
+		connection per user. Though this method is not fool-proof, and may have side-effects
+		the following contributed method may inspire someone to provide a better solution.
+	</para>
+
+	<para>
+		This is not a perfect solution because Windows clients can drop idle connections
+		with an auto-reconnect capability that could result in the appearance that a share
+		is no longer in use, while actually it is. Even so, it demonstrates the principle
+		of use of the <parameter>preexec script</parameter> parameter.
+	</para>
+
+	<para>
+		The following share configuration demonstrates use of the script shown in <link linkend="Tpees"/>:
+		<programlisting>
+[myshare]
+	...
+	preexec script = /sbin/PermitSingleLogon.sh
+	preexec close = Yes
+	...
+		</programlisting>
+	</para>
+
+<example id="Tpees">
+	<title>Script to Enforce Single Resource Logon</title>
+<screen>
+#!/bin/bash
+
+IFS="-"
+RESULT=$(smbstatus -S -u $1 2> /dev/null | awk 'NF > 6 {print $1}' | sort | uniq -d)
+
+if [ "X${RESULT}" == X  ]; then
+  exit 0
+else
+  exit 1
+fi
+</screen>
+</example>
+
 </sect1>
 
 </chapter>

Modified: trunk/Samba-HOWTO-Collection/TOSHARG-Bugs.xml
===================================================================
--- trunk/Samba-HOWTO-Collection/TOSHARG-Bugs.xml	2005-05-02 15:47:25 UTC (rev 530)
+++ trunk/Samba-HOWTO-Collection/TOSHARG-Bugs.xml	2005-05-03 10:22:56 UTC (rev 531)
@@ -235,6 +235,28 @@
 where it occurred.
 </para>
 
+<para>
+Sometimes it is necessary to build a Samba binary files that have debugging
+symbols so as to make it possible to capture enough information from a crashed
+operation to permit the Samba Team to fix the problem.
+</para>
+
+<para>
+Compile with <constant>-g</constant> to ensure you have symbols in place. 
+Add the following line to the &smb.conf; file global section:
+</screen>
+panic action = "/bin/sleep 90000"
+</screen>
+to catch any panics. If <command>smbd</command> seems to be frozen look for any sleep
+processes. If it is not, and appears to be spinning, find the process id
+of the spinning process and type:
+<screen>
+gdb /usr/local/samba/sbin/smbd
+</screen>
+then <quote>attach 'pid'</quote> (of the spinning process), then type <quote>bt</quote> to
+get a backtrace to see where the smbd is in the call path.
+</para>
+
 </sect1>
 
 <sect1>