From: Chen Hanxiao <chenhanxiao(a)cn.fujitsu.com>
Some cgroup value range may change
in the further kernel.
Introduce kernel version check function for cgroup.
This will be helpful to determine the proper values.
Signed-off-by: Chen Hanxiao <chenhanxiao(a)cn.fujitsu.com>
---
src/util/vircgroup.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index e99caf5..498bc20 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -38,6 +38,7 @@
#include <sys/types.h>
#include <signal.h>
#include <dirent.h>
+#include <sys/utsname.h>
#define __VIR_CGROUP_ALLOW_INCLUDE_PRIV_H__
#include "vircgrouppriv.h"
@@ -74,6 +75,37 @@ typedef enum {
*/
} virCgroupFlags;
+static int virCgroupGetKernelVersion(unsigned long *kernelVersion)
+{
+ struct utsname ver;
+
+ uname(&ver);
+
+ if (virParseVersionString(ver.release, kernelVersion, true) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, _("Unknown release: %s"),
ver.release);
+ return -1;
+ }
+
+ return 0;
+}
+
+static bool virCgroupVersionCheck(const char * dstVersion)
+{
+ unsigned long currentVersion;
+ unsigned long version;
+
+ if (virCgroupGetKernelVersion(¤tVersion) < 0) {
+ return -1;
+ }
+
+ if (virParseVersionString(dstVersion, &version, true) < 0) {
+ return -1;
+ }
+
+ return (((long long)currentVersion - (long long)version) >= 0) ? true : false;
+}
+
+
#ifdef VIR_CGROUP_SUPPORTED
bool
--
1.8.2.1