[v4,02/14] libxl: provide a flag in dominfo to avoid stopping it

Commit Message

Juergen Gross Jan. 18, 2016, 8:03 a.m. UTC

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 <[e-mail]>
Acked-by: Ian Campbell <[e-mail]>
---
V3: flag in dominfo instead function to get xenstore domid as requested
    by Ian Campbell

Signed-off-by: Juergen Gross <[e-mail]>
---
 tools/libxl/libxl.c         | 11 ++++++-----
 tools/libxl/libxl.h         |  9 +++++++++
 tools/libxl/libxl_types.idl |  1 +
 3 files changed, 16 insertions(+), 5 deletions(-)

Patch

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index abb2845..a8718b0 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.
     #