Remove the reason code from the destroy action -- the reason is only of value

on a graceful shutdown.  Clarify the semantic difference between poweroff and
halt (we use halt to mean 'shutdown and stop' and poweroff to mean 'shutdown
and do whatever the configured behaviour is').

Signed-off-by: Ewan Mellor <ewan@xensource.com>

tools/python/xen/xm/destroy.py

@@ -21,19 +21,15 @@
 from xen.xend.XendClient import server
 from xen.xm.opts import *
 
-gopts = Opts(use="""[options] [DOM]
+gopts = Opts(use="""[DOM]
 
-Destroy a domain, optionally restarting it.
+Destroy a domain.
 """)
 
 gopts.opt('help', short='h',
          fn=set_true, default=0,
          use="Print this help.")
 
-gopts.opt('reboot', short='R',
-          fn=set_true, default=0,
-          use='Destroy and restart.')
-
 def main(argv):
     opts = gopts
     args = opts.parse(argv)
@@ -42,10 +38,4 @@ def main(argv):
         return
     if len(args) < 1: opts.err('Missing domain')
     dom = args[0]
-    if opts.vals.reboot:
-        mode = 'reboot'
-    else:
-        mode = 'halt'
-    server.xend_domain_destroy(dom, mode)
-    
-        
+    server.xend_domain_destroy(dom)

tools/python/xen/xm/shutdown.py

@@ -73,19 +73,15 @@ def shutdown(opts, doms, mode, wait):
         opts.info("All domains terminated")
 
 def shutdown_mode(opts):
-    mode = 'poweroff'
-    if opts.vals.wait:
-        mode = 'halt'
-        if opts.vals.reboot:
-           opts.err("Can't specify wait and reboot") 
+    if opts.vals.halt and opts.vals.reboot:
+        opts.err("Can't specify halt and reboot")
+
+    if opts.vals.halt:
+        return 'halt'
+    elif opts.vals.reboot:
+        return 'reboot'
     else:
-        if opts.vals.halt and opts.vals.reboot:
-            opts.err("Can't specify halt and reboot")
-        if opts.vals.halt:
-            mode = 'halt'
-        elif opts.vals.reboot:
-            mode = 'reboot'
-    return mode
+        return 'poweroff'
 
 def main_all(opts, args):
     mode = shutdown_mode(opts)