[libvirt] [PATCH 13/47] vircgroup: extract virCgroupV1GetAnyController
Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com>
---
src/util/vircgroup.c | 16 ++++------------
src/util/vircgroupbackend.h | 4 ++++
src/util/vircgroupv1.c | 22 ++++++++++++++++++++++
3 files changed, 30 insertions(+), 12 deletions(-)
diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index 3d10ac2427..817ee8f6ca 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -3167,19 +3167,11 @@ virCgroupPathOfAnyController(virCgroupPtr group,
const char *name,
char **keypath)
{
- size_t i;
+ int controller;
- for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
- /* Reject any controller with a placement
- * of '/' to avoid doing bad stuff to the root
- * cgroup
- */
- if (group->controllers[i].mountPoint &&
- group->controllers[i].placement &&
- STRNEQ(group->controllers[i].placement, "/")) {
- return virCgroupPathOfController(group, i, name, keypath);
- }
- }
+ controller = group->backend->getAnyController(group);
+ if (controller >= 0)
+ return virCgroupPathOfController(group, controller, name, keypath);
virReportSystemError(ENOSYS, "%s",
_("No controllers are mounted"));
diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h
index 8b751af355..933f59151a 100644
--- a/src/util/vircgroupbackend.h
+++ b/src/util/vircgroupbackend.h
@@ -77,6 +77,9 @@ typedef bool
(*virCgroupHasControllerCB)(virCgroupPtr cgroup,
int controller);
+typedef int
+(*virCgroupGetAnyControllerCB)(virCgroupPtr group);
+
struct _virCgroupBackend {
virCgroupBackendType type;
@@ -91,6 +94,7 @@ struct _virCgroupBackend {
virCgroupGetPlacementCB getPlacement;
virCgroupDetectControllersCB detectControllers;
virCgroupHasControllerCB hasController;
+ virCgroupGetAnyControllerCB getAnyController;
};
typedef struct _virCgroupBackend virCgroupBackend;
typedef virCgroupBackend *virCgroupBackendPtr;
diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c
index c040d50141..105024ddde 100644
--- a/src/util/vircgroupv1.c
+++ b/src/util/vircgroupv1.c
@@ -485,6 +485,27 @@ virCgroupV1HasController(virCgroupPtr group,
}
+static int
+virCgroupV1GetAnyController(virCgroupPtr group)
+{
+ size_t i;
+
+ for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
+ /* Reject any controller with a placement
+ * of '/' to avoid doing bad stuff to the root
+ * cgroup
+ */
+ if (group->controllers[i].mountPoint &&
+ group->controllers[i].placement &&
+ STRNEQ(group->controllers[i].placement, "/")) {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+
virCgroupBackend virCgroupV1Backend = {
.type = VIR_CGROUP_BACKEND_TYPE_V1,
@@ -498,6 +519,7 @@ virCgroupBackend virCgroupV1Backend = {
.getPlacement = virCgroupV1GetPlacement,
.detectControllers = virCgroupV1DetectControllers,
.hasController = virCgroupV1HasController,
+ .getAnyController = virCgroupV1GetAnyController,
};
--
2.17.1