systemctl: add new "get-cgroup-attr" to query current cgroup attribute value

Also adds a pair of bus calls for this to the daemon.

1 files changed, 2 insertions, 8 deletions

diff --git a/src/core/cgroup-attr.c b/src/core/cgroup-attr.c
index cedf37de50..aed4e99d86 100644
--- a/src/core/cgroup-attr.c
+++ b/src/core/cgroup-attr.c
@@ -25,8 +25,7 @@
 
 int cgroup_attribute_apply(CGroupAttribute *a, CGroupBonding *b) {
         int r;
-        char *path = NULL;
-        char *v = NULL;
+        _cleanup_free_ char *path = NULL, *v = NULL;
 
         assert(a);
 
@@ -41,18 +40,13 @@ int cgroup_attribute_apply(CGroupAttribute *a, CGroupBonding *b) {
         }
 
         r = cg_get_path(a->controller, b->path, a->name, &path);
-        if (r < 0) {
-                free(v);
+        if (r < 0)
                 return r;
-        }
 
         r = write_one_line_file(path, v ? v : a->value);
         if (r < 0)
                 log_warning("Failed to write '%s' to %s: %s", v ? v : a->value, path, strerror(-r));
 
-        free(path);
-        free(v);
-
         return r;
 }