-int cg_pid_get_path_shifted(pid_t pid, char **root, char **cgroup) {
- _cleanup_free_ char *cg_root = NULL;
- char *cg_process, *p;
+int cg_shift_path(const char *cgroup, const char *root, const char **shifted) {
+ _cleanup_free_ char *rt = NULL;
+ char *p;
+ int r;
+
+ assert(cgroup);
+ assert(shifted);
+
+ if (!root) {
+ /* If the root was specified let's use that, otherwise
+ * let's determine it from PID 1 */
+
+ r = cg_get_root_path(&rt);
+ if (r < 0)
+ return r;
+
+ root = rt;
+ }
+
+ p = path_startswith(cgroup, root);
+ if (p)
+ *shifted = p - 1;
+ else
+ *shifted = cgroup;
+
+ return 0;
+}
+
+int cg_pid_get_path_shifted(pid_t pid, const char *root, char **cgroup) {
+ _cleanup_free_ char *raw = NULL;
+ const char *c;