[PATCH 1/5] xen/sys/hypervisor: Export guest_properties/is_initial_domain

[Bastian Blank <waldi@debian.org>]

Signed-off-by: Bastian Blank <waldi@debian.org>
---
 drivers/xen/sys-hypervisor.c |   35 +++++++++++++++++++++++++++++++++++
 1 files changed, 35 insertions(+), 0 deletions(-)

diff --git a/drivers/xen/sys-hypervisor.c b/drivers/xen/sys-hypervisor.c
index 1e0fe01..d0916e8 100644
--- a/drivers/xen/sys-hypervisor.c
+++ b/drivers/xen/sys-hypervisor.c
@@ -355,6 +355,35 @@ static void xen_properties_destroy(void)
 	sysfs_remove_group(hypervisor_kobj, &xen_properties_group);
 }
 
+/* xen guest properties info */
+
+static ssize_t is_initial_domain_show(struct hyp_sysfs_attr *attr, char *buffer)
+{
+	return sprintf(buffer, "%d\n", xen_initial_domain());
+}
+
+HYPERVISOR_ATTR_RO(is_initial_domain);
+
+static struct attribute *xen_guest_properties_attrs[] = {
+	&is_initial_domain_attr.attr,
+	NULL
+};
+
+static struct attribute_group xen_guest_properties_group = {
+	.name = "guest_properties",
+	.attrs = xen_guest_properties_attrs,
+};
+
+static int __init xen_guest_properties_init(void)
+{
+	return sysfs_create_group(hypervisor_kobj, &xen_guest_properties_group);
+}
+
+static void xen_guest_properties_destroy(void)
+{
+	sysfs_remove_group(hypervisor_kobj, &xen_guest_properties_group);
+}
+
 static int __init hyper_sysfs_init(void)
 {
 	int ret;
@@ -377,9 +406,14 @@ static int __init hyper_sysfs_init(void)
 	ret = xen_properties_init();
 	if (ret)
 		goto prop_out;
+	ret = xen_guest_properties_init();
+	if (ret)
+		goto gprop_out;
 
 	goto out;
 
+gprop_out:
+	xen_properties_destroy();
 prop_out:
 	xen_sysfs_uuid_destroy();
 uuid_out:
@@ -394,6 +428,7 @@ out:
 
 static void __exit hyper_sysfs_exit(void)
 {
+	xen_guest_properties_destroy();
 	xen_properties_destroy();
 	xen_compilation_destroy();
 	xen_sysfs_uuid_destroy();
-- 
1.7.7.3