14019 Allow more control over zone init exit actions
Portions contributed by: Joshua M. Clulow <jmc@joyent.com>
Portions contributed by: Andy Fiddaman <andy@omnios.org>
Reviewed by: C Fraire <cfraire@me.com>
Reviewed by: Gordon Ross <Gordon.W.Ross@gmail.com>
Approved by: Robert Mustacchi <rm@fingolfin.org>

@@ -210,21 +210,40 @@
 -->
 <!ELEMENT initname      (#PCDATA) >
 <!ATTLIST initname>
 
 <!--
-  restartinit
+  restartinit, restartinit0 and restartinitreboot
 
-    Boolean indicating that the program specified by the initname attr
-    should be restarted, or not, if it exits.  By default, the init program
-    will be restarted if this attribute is not provided.  Specifying false
-    for this attr will prevent that.
+    These three boolean elements control what action is taken when the
+    program specified by the 'initname' element exits.
 
-    It has no attributes.
+    The default values are:
+
+        restartinit:       true
+        restartinit0:      false
+        restartinitreboot: false
+
+    If 'restartinit' is set to false then the init process will never be
+    restarted and the zone will shut down once init exits. In this case, the
+    other restartinit elements are ignored.
+
+    When 'restartinit0' is set, init will only be restarted if it exited with
+    an exit status of 0, otherwise the zone will shut down.
+
+    If 'restartinitreboot' is set to true then whenever init should be
+    restarted, based on the other restartinit elements, the zone will instead
+    be rebooted.
+
+    These have no attributes.
 -->
 <!ELEMENT restartinit   (#PCDATA) >
 <!ATTLIST restartinit>
+<!ELEMENT restartinit0  (#PCDATA) >
+<!ATTLIST restartinit0>
+<!ELEMENT restartinitreboot     (#PCDATA) >
+<!ATTLIST restartinitreboot>
 
 <!--
   login_cmd
 
     Path to the initial login binary that should be executed when

@@ -640,11 +659,13 @@
 
       name      The name of the brand.  This must match the name of the
                 directory in which the configuration file is stored.
 -->
 
-<!ELEMENT brand         (modname?, initname, restartinit?, login_cmd,
+<!ELEMENT brand         (modname?, initname, restartinit?,
+                        restartinit0?, restartinitreboot?,
+                        login_cmd,
                         forcedlogin_cmd, user_cmd, install,
                         installopts?, boot?, sysboot?, halt?, shutdown?,
                         verify_cfg?, verify_adm?, postattach?, postclone?,
                         postinstall?, predetach?, attach?, detach?, clone?,
                         presnap?, postsnap?, validatesnap?,