The root cgroup doesn't expose and properties in the "pids" cgroup
controller, hence we need to get the data from somewhere else.
#include "parse-util.h"
#include "path-util.h"
#include "process-util.h"
+#include "procfs-util.h"
#include "special.h"
#include "stdio-util.h"
#include "string-table.h"
if ((u->cgroup_realized_mask & CGROUP_MASK_PIDS) == 0)
return -ENODATA;
+ /* The root cgroup doesn't expose this information, let's get it from /proc instead */
+ if (unit_has_root_cgroup(u))
+ return procfs_tasks_get_current(ret);
+
r = cg_get_attribute("pids", u->cgroup_path, "pids.current", &v);
if (r == -ENOENT)
return -ENODATA;