+int running_in_chroot(void);
+
+char *ellipsize(const char *s, unsigned length, unsigned percent);
+
+int touch(const char *path);
+
+char *unquote(const char *s, const char *quotes);
+
+int wait_for_terminate(pid_t pid, siginfo_t *status);
+int wait_for_terminate_and_warn(const char *name, pid_t pid);
+
+_noreturn_ void freeze(void);
+
+bool null_or_empty(struct stat *st);
+
+DIR *xopendirat(int dirfd, const char *name);
+
+int ask_password_tty(const char *message, usec_t until, const char *flag_file, char **_passphrase);
+
+#define NULSTR_FOREACH(i, l) \
+ for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
+