[PATCH v3 03/15] libxl: provide a flag in dominfo to avoid stopping it

From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xen.org, Ian.Campbell@citrix.com,
	ian.jackson@eu.citrix.com, stefano.stabellini@eu.citrix.com,
	wei.liu2@citrix.com, dgdegra@tycho.nsa.gov
Cc: Juergen Gross <jgross@suse.com>
Subject: [PATCH v3 03/15] libxl: provide a flag in dominfo to avoid stopping it
Date: Fri,  8 Jan 2016 14:08:34 +0100	[thread overview]
Message-ID: <1452258526-4797-4-git-send-email-jgross@suse.com> (raw)
In-Reply-To: <1452258526-4797-1-git-send-email-jgross@suse.com>

Add a "never_stop" flag to dominfo as indicator for the toolstack that
this domain is to be kept running. For now it is being set for xenstore
domain, but there might be other domains in the future.

Signed-off-by: Juergen Gross <jgross@suse.com>
---
V3: flag in dominfo instead function to get xenstore domid as requested
    by Ian Campbell
---
 tools/libxl/libxl.c         | 11 ++++++-----
 tools/libxl/libxl.h         |  9 +++++++++
 tools/libxl/libxl_types.idl |  1 +
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 9207621..d2d03e4 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -623,11 +623,12 @@ static void xcinfo2xlinfo(libxl_ctx *ctx,
                                    &xlinfo->ssid_label, &size) < 0)
         xlinfo->ssid_label = NULL;
 
-    xlinfo->dying    = !!(xcinfo->flags&XEN_DOMINF_dying);
-    xlinfo->shutdown = !!(xcinfo->flags&XEN_DOMINF_shutdown);
-    xlinfo->paused   = !!(xcinfo->flags&XEN_DOMINF_paused);
-    xlinfo->blocked  = !!(xcinfo->flags&XEN_DOMINF_blocked);
-    xlinfo->running  = !!(xcinfo->flags&XEN_DOMINF_running);
+    xlinfo->dying      = !!(xcinfo->flags&XEN_DOMINF_dying);
+    xlinfo->shutdown   = !!(xcinfo->flags&XEN_DOMINF_shutdown);
+    xlinfo->paused     = !!(xcinfo->flags&XEN_DOMINF_paused);
+    xlinfo->blocked    = !!(xcinfo->flags&XEN_DOMINF_blocked);
+    xlinfo->running    = !!(xcinfo->flags&XEN_DOMINF_running);
+    xlinfo->never_stop = !!(xcinfo->flags&XEN_DOMINF_xs_domain);
 
     if (xlinfo->shutdown)
         xlinfo->shutdown_reason = (xcinfo->flags>>XEN_DOMINF_shutdownshift) & XEN_DOMINF_shutdownmask;
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index 05606a7..7114491 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -560,6 +560,15 @@ typedef struct libxl__ctx libxl_ctx;
 #define LIBXL_HAVE_DOMINFO_OUTSTANDING_MEMKB 1
 
 /*
+ * LIBXL_HAVE_DOMINFO_NEVER_STOP
+ *
+ * If this is defined, libxl_dominfo will contain a flag called never_stop
+ * indicating that the specific domain should never be stopped by the
+ * toolstack.
+ */
+#define LIBXL_HAVE_DOMINFO_NEVER_STOP 1
+
+/*
  * LIBXL_HAVE_QXL
  *
  * If defined, then the libxl_vga_interface_type will contain another value:
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index 9658356..9ad7eba 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -295,6 +295,7 @@ libxl_dominfo = Struct("dominfo",[
     ("paused",      bool),
     ("shutdown",    bool),
     ("dying",       bool),
+    ("never_stop",  bool),
 
     # Valid iff ->shutdown is true.
     #
-- 
2.6.2
