# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID bd408087629788124c70bfcfadfdab246dd71a53
# Parent d49e5cc672ebf3d661adcc72d277c2d317812bf1
New /sys/hypervisor/uuid, containing this domain's UUID.
Signed-off-by: Markus Armbruster <armbru@xxxxxxxxxx>
---
linux-2.6-xen-sparse/drivers/xen/core/xen_sysfs.c | 39 ++++++++++++++++++++++
1 files changed, 39 insertions(+)
diff -r d49e5cc672eb -r bd4080876297
linux-2.6-xen-sparse/drivers/xen/core/xen_sysfs.c
--- a/linux-2.6-xen-sparse/drivers/xen/core/xen_sysfs.c Wed Jun 28 20:46:01
2006 +0100
+++ b/linux-2.6-xen-sparse/drivers/xen/core/xen_sysfs.c Wed Jun 28 21:03:25
2006 +0100
@@ -8,12 +8,14 @@
*/
#include <linux/config.h>
+#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <asm/hypervisor.h>
#include <xen/features.h>
#include <xen/hypervisor_sysfs.h>
+#include <xen/xenbus.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mike D. Day <ncmike@xxxxxxxxxx>");
@@ -95,6 +97,37 @@ static void xen_sysfs_version_destroy(vo
static void xen_sysfs_version_destroy(void)
{
sysfs_remove_group(&hypervisor_subsys.kset.kobj, &version_group);
+}
+
+/* UUID */
+
+static ssize_t uuid_show(struct hyp_sysfs_attr *attr, char *buffer)
+{
+ char *vm, *val;
+ int ret;
+
+ vm = xenbus_read(XBT_NIL, "vm", "", NULL);
+ if (IS_ERR(vm))
+ return PTR_ERR(vm);
+ val = xenbus_read(XBT_NIL, vm, "uuid", NULL);
+ kfree(vm);
+ if (IS_ERR(val))
+ return PTR_ERR(val);
+ ret = sprintf(buffer, "%s\n", val);
+ kfree(val);
+ return ret;
+}
+
+HYPERVISOR_ATTR_RO(uuid);
+
+static int __init xen_sysfs_uuid_init(void)
+{
+ return sysfs_create_file(&hypervisor_subsys.kset.kobj, &uuid_attr.attr);
+}
+
+static void xen_sysfs_uuid_destroy(void)
+{
+ sysfs_remove_file(&hypervisor_subsys.kset.kobj, &uuid_attr.attr);
}
/* xen compilation attributes */
@@ -314,10 +347,15 @@ static int __init hyper_sysfs_init(void)
ret = xen_compilation_init();
if (ret)
goto comp_out;
+ ret = xen_sysfs_uuid_init();
+ if (ret)
+ goto uuid_out;
ret = xen_properties_init();
if (!ret)
goto out;
+ xen_sysfs_uuid_destroy();
+uuid_out:
xen_compilation_destroy();
comp_out:
xen_sysfs_version_destroy();
@@ -331,6 +369,7 @@ static void hyper_sysfs_exit(void)
{
xen_properties_destroy();
xen_compilation_destroy();
+ xen_sysfs_uuid_destroy();
xen_sysfs_version_destroy();
xen_sysfs_type_destroy();
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