[Xen-devel] [PATCH v4 16/16] libxl: consider also qemu in stubdomain in libxl__dm_active check - Marek Marczykowski-Górecki

From: "Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>
To: xen-devel@lists.xenproject.org
Cc: "Anthony PERARD" <anthony.perard@citrix.com>,
	"Ian Jackson" <ian.jackson@eu.citrix.com>,
	"Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>,
	"Wei Liu" <wl@xen.org>
Subject: [Xen-devel] [PATCH v4 16/16] libxl: consider also qemu in stubdomain in libxl__dm_active check
Date: Wed, 15 Jan 2020 03:39:55 +0100	[thread overview]
Message-ID: <13e463d7e4e797a215e8f2c5437a9499af6fd92c.1579055705.git-series.marmarek@invisiblethingslab.com> (raw)
In-Reply-To: <cover.f819645cd9f5cf7a6f692f9661cfb4e670a2cd08.1579055705.git-series.marmarek@invisiblethingslab.com>

Since qemu-xen can now run in stubdomain too, handle this case when
checking it's state too.

Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
---
 tools/libxl/libxl_dm.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index 89eca1e..7698887 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -3729,12 +3729,18 @@ out:
 
 int libxl__dm_active(libxl__gc *gc, uint32_t domid)
 {
-    char *pid, *path;
+    char *pid, *dm_domid, *path;
 
     path = GCSPRINTF("/local/domain/%d/image/device-model-pid", domid);
     pid = libxl__xs_read(gc, XBT_NULL, path);
 
-    return pid != NULL;
+    if (pid)
+        return true;
+
+    path = GCSPRINTF("/local/domain/%d/image/device-model-domid", domid);
+    dm_domid = libxl__xs_read(gc, XBT_NULL, path);
+
+    return dm_domid != NULL;
 }
 
 int libxl__dm_check_start(libxl__gc *gc, libxl_domain_config *d_config,
-- 
git-series 0.9.1

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