+_public_ int sd_bus_creds_get_user_slice(sd_bus_creds *c, const char **ret) {
+ int r;
+
+ assert_return(c, -EINVAL);
+ assert_return(ret, -EINVAL);
+
+ if (!(c->mask & SD_BUS_CREDS_USER_SLICE))
+ return -ENODATA;
+
+ assert(c->cgroup);
+
+ if (!c->user_slice) {
+ const char *shifted;
+
+ r = cg_shift_path(c->cgroup, c->cgroup_root, &shifted);
+ if (r < 0)
+ return r;
+
+ r = cg_path_get_user_slice(shifted, (char**) &c->user_slice);
+ if (r < 0)
+ return r;
+ }
+
+ *ret = c->user_slice;
+ return 0;
+}
+