From 47941ea7f52be44f609a6b6acc8895644039e617 Mon Sep 17 00:00:00 2001
From: Pavel Hrdina <phrdina@redhat.com>
Date: Fri, 17 Aug 2018 09:46:10 +0200
Subject: [PATCH] vircgroup: extract virCgroupV1CopyMounts
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Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
---
 src/util/vircgroup.c        | 23 +----------------------
 src/util/vircgroupbackend.h |  5 +++++
 src/util/vircgroupv1.c      | 22 ++++++++++++++++++++++
 3 files changed, 28 insertions(+), 22 deletions(-)

diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index 6358a25367..ec4a878614 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -231,27 +231,6 @@ virCgroupPartitionEscape(char **path)
 }
 
 
-static int
-virCgroupCopyMounts(virCgroupPtr group,
-                    virCgroupPtr parent)
-{
-    size_t i;
-    for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
-        if (!parent->controllers[i].mountPoint)
-            continue;
-
-        if (VIR_STRDUP(group->controllers[i].mountPoint,
-                       parent->controllers[i].mountPoint) < 0)
-            return -1;
-
-        if (VIR_STRDUP(group->controllers[i].linkPoint,
-                       parent->controllers[i].linkPoint) < 0)
-            return -1;
-    }
-    return 0;
-}
-
-
 static int
 virCgroupResolveMountLink(const char *mntDir,
                           const char *typeStr,
@@ -649,7 +628,7 @@ virCgroupDetect(virCgroupPtr group,
     }
 
     if (parent) {
-        if (virCgroupCopyMounts(group, parent) < 0)
+        if (group->backend->copyMounts(group, parent) < 0)
             return -1;
     } else {
         if (virCgroupDetectMounts(group) < 0)
diff --git a/src/util/vircgroupbackend.h b/src/util/vircgroupbackend.h
index daf47bac09..81ee597fc8 100644
--- a/src/util/vircgroupbackend.h
+++ b/src/util/vircgroupbackend.h
@@ -41,12 +41,17 @@ typedef bool
                                    const char *drivername,
                                    const char *machinename);
 
+typedef int
+(*virCgroupCopyMountsCB)(virCgroupPtr group,
+                         virCgroupPtr parent);
+
 struct _virCgroupBackend {
     virCgroupBackendType type;
 
     /* Mandatory callbacks that need to be implemented for every backend. */
     virCgroupAvailableCB available;
     virCgroupValidateMachineGroupCB validateMachineGroup;
+    virCgroupCopyMountsCB copyMounts;
 };
 typedef struct _virCgroupBackend virCgroupBackend;
 typedef virCgroupBackend *virCgroupBackendPtr;
diff --git a/src/util/vircgroupv1.c b/src/util/vircgroupv1.c
index d3879f9061..d164c20dc5 100644
--- a/src/util/vircgroupv1.c
+++ b/src/util/vircgroupv1.c
@@ -159,11 +159,33 @@ virCgroupV1ValidateMachineGroup(virCgroupPtr group,
 }
 
 
+static int
+virCgroupV1CopyMounts(virCgroupPtr group,
+                      virCgroupPtr parent)
+{
+    size_t i;
+    for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
+        if (!parent->controllers[i].mountPoint)
+            continue;
+
+        if (VIR_STRDUP(group->controllers[i].mountPoint,
+                       parent->controllers[i].mountPoint) < 0)
+            return -1;
+
+        if (VIR_STRDUP(group->controllers[i].linkPoint,
+                       parent->controllers[i].linkPoint) < 0)
+            return -1;
+    }
+    return 0;
+}
+
+
 virCgroupBackend virCgroupV1Backend = {
     .type = VIR_CGROUP_BACKEND_TYPE_V1,
 
     .available = virCgroupV1Available,
     .validateMachineGroup = virCgroupV1ValidateMachineGroup,
+    .copyMounts = virCgroupV1CopyMounts,
 };