cgroup: export virCgroupRemoveRecursively

We will use virCgroupRemoveRecursively to remove cgroup
directories in the coming patch.
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com>

src/libvirt_private.syms

@@ -1115,6 +1115,7 @@ virCgroupMounted;
 virCgroupMoveTask;
 virCgroupPathOfController;
 virCgroupRemove;
+virCgroupRemoveRecursively;
 virCgroupSetBlkioDeviceWeight;
 virCgroupSetBlkioWeight;
 virCgroupSetCpuCfsPeriod;

src/util/vircgroup.c

@@ -686,7 +686,7 @@ cleanup:
 #endif
 
 #if defined _DIRENT_HAVE_D_TYPE
-static int virCgroupRemoveRecursively(char *grppath)
+int virCgroupRemoveRecursively(char *grppath)
 {
     DIR *grpdir;
     struct dirent *ent;
@@ -735,7 +735,7 @@ static int virCgroupRemoveRecursively(char *grppath)
     return rc;
 }
 #else
-static int virCgroupRemoveRecursively(char *grppath ATTRIBUTE_UNUSED)
+int virCgroupRemoveRecursively(char *grppath ATTRIBUTE_UNUSED)
 {
     /* Claim no support */
     return -ENXIO;

src/util/vircgroup.h

@@ -157,6 +157,7 @@ int virCgroupGetCpusetMems(virCgroupPtr group, char **mems);
 int virCgroupSetCpusetCpus(virCgroupPtr group, const char *cpus);
 int virCgroupGetCpusetCpus(virCgroupPtr group, char **cpus);
 
+int virCgroupRemoveRecursively(char *grppath);
 int virCgroupRemove(virCgroupPtr group);
 
 void virCgroupFree(virCgroupPtr *group);