+
+bool is_localhost(const char *hostname);
+
+int take_password_lock(const char *root);
+
+int is_symlink(const char *path);
+int is_dir(const char *path, bool follow);
+
+int unquote_first_word(const char **p, char **ret, bool relax);
+int unquote_many_words(const char **p, ...) _sentinel_;
+
+int free_and_strdup(char **p, const char *s);
+
+int sethostname_idempotent(const char *s);