+static int device_find_escape_name(Manager *m, const char *dn, Unit **_u) {
+ char *e;
+ Unit *u;
+
+ assert(m);
+ assert(dn);
+ assert(dn[0] == '/');
+ assert(_u);
+
+ if (!(e = unit_name_escape_path(dn+1, ".device")))
+ return -ENOMEM;
+
+ u = manager_get_unit(m, e);
+ free(e);
+
+ if (u) {
+ *_u = u;
+ return 1;
+ }
+
+ return 0;
+}
+
+static bool devnode_is_api(const char *node) {
+ unsigned i;
+
+ static const char * const table[] = {
+ "/dev/null",
+ "/dev/zero",
+ "/dev/urandom",
+ "/dev/random",
+ "/dev/port",
+ "/dev/oldmem",
+ "/dev/full",
+ "/dev/kmsg",
+ "/dev/mem"
+ };
+
+ for (i = 0; i < ELEMENTSOF(table); i++)
+ if (streq(table[i], node))
+ return true;
+
+ return false;
+}
+