+static int mkdir_p(char *dir, mode_t mask)
+{
+ char *l = strrchr(dir, '/');
+ int ret;
+
+ if (!l)
+ return 0;
+
+ *l = '\0';
+
+ if (mkdir_p(dir, mask))
+ return -1;
+
+ *l = '/';
+
+ ret = mkdir(dir, mask);
+ if (ret && errno == EEXIST)
+ return 0;
+
+ if (ret)
+ syslog(LOG_ERR, "mkdir(%s, %d) failed: %s\n", dir, mask, strerror(errno));
+
+ return ret;
+}
+
+static void free_lease(struct lease *l)
+{
+ if (l->head.next)
+ list_del(&l->head);
+
+ free(l->duid);
+ free(l);
+}