+static int xfgets(char *line, int size, FILE *f)
+{
+again:
+ if (fgets(line, size, f))
+ return 1;
+ if (feof(f))
+ return 0;
+ if (!ferror(f))
+ return -E_FGETS;
+ if (errno != EINTR) {
+ PARA_ERROR_LOG("%s\n", strerror(errno));
+ return -E_FGETS;
+ }
+ clearerr(f);
+ goto again;
+}
+
+/**
+ * Remove all entries from the user list.
+ *
+ * This is called on shutdown and when the user list is reloaded because the
+ * server received SIGHUP.
+ */
+void user_list_deplete(void)
+{
+ struct user *u, *tmpu;
+
+ list_for_each_entry_safe(u, tmpu, &user_list, node) {
+ list_del(&u->node);
+ free(u->name);
+ apc_free_pubkey(u->pubkey);
+ free(u);
+ }
+}
+
+/**
+ * Initialize the list of users allowed to connect to para_server.
+ *
+ * \param user_list_file The file containing access information.
+ *
+ * If this function is called for the second time, the contents of the
+ * previous call are discarded, i.e. the user list is reloaded.
+ *
+ * This function either succeeds or calls exit(3).
+ */
+void user_list_init(const char *user_list_file)