+char *ellipsize(const char *s, size_t length, unsigned percent);
+char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigned percent);
+
+int touch(const char *path);
+
+char *unquote(const char *s, const char *quotes);
+char *normalize_env_assignment(const char *s);
+
+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);
+int null_or_empty_path(const char *fn);
+
+DIR *xopendirat(int dirfd, const char *name, int flags);
+
+void dual_timestamp_serialize(FILE *f, const char *name, dual_timestamp *t);
+void dual_timestamp_deserialize(const char *value, dual_timestamp *t);
+
+char *fstab_node_to_udev_node(const char *p);
+
+void filter_environ(const char *prefix);
+
+bool tty_is_vc(const char *tty);
+int vtnr_from_tty(const char *tty);
+const char *default_term_for_tty(const char *tty);
+
+void execute_directory(const char *directory, DIR *_d, char *argv[]);
+
+int kill_and_sigcont(pid_t pid, int sig);
+
+bool nulstr_contains(const char*nulstr, const char *needle);
+
+bool plymouth_running(void);
+
+void parse_syslog_priority(char **p, int *priority);
+void skip_syslog_pid(char **buf);
+void skip_syslog_date(char **buf);
+
+int have_effective_cap(int value);
+
+bool hostname_is_valid(const char *s);
+char* hostname_cleanup(char *s);
+
+char* strshorten(char *s, size_t l);
+
+int terminal_vhangup_fd(int fd);
+int terminal_vhangup(const char *name);
+
+int vt_disallocate(const char *name);
+
+int copy_file(const char *from, const char *to);
+int symlink_or_copy(const char *from, const char *to);
+int symlink_or_copy_atomic(const char *from, const char *to);
+
+int fchmod_umask(int fd, mode_t mode);
+
+int conf_files_list(char ***strv, const char *suffix, const char *dir, ...);
+
+int hwclock_is_localtime(void);
+int hwclock_apply_localtime_delta(int *min);
+int hwclock_reset_localtime_delta(void);
+int hwclock_get_time(struct tm *tm);
+int hwclock_set_time(const struct tm *tm);
+
+int audit_session_from_pid(pid_t pid, uint32_t *id);
+int audit_loginuid_from_pid(pid_t pid, uid_t *uid);
+
+bool display_is_local(const char *display);
+int socket_from_display(const char *display, char **path);
+
+int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home);
+int get_group_creds(const char **groupname, gid_t *gid);
+
+int glob_exists(const char *path);
+
+int dirent_ensure_type(DIR *d, struct dirent *de);
+
+int in_search_path(const char *path, char **search);
+int get_files_in_directory(const char *path, char ***list);
+
+char *join(const char *x, ...) _sentinel_;
+
+bool is_main_thread(void);
+
+bool in_charset(const char *s, const char* charset);
+
+int block_get_whole_disk(dev_t d, dev_t *ret);
+
+int file_is_sticky(const char *p);
+
+int strdup_or_null(const char *a, char **b);
+
+#define NULSTR_FOREACH(i, l) \
+ for ((i) = (l); (i) && *(i); (i) = strchr((i), 0)+1)
+
+#define NULSTR_FOREACH_PAIR(i, j, l) \
+ for ((i) = (l), (j) = strchr((i), 0)+1; (i) && *(i); (i) = strchr((j), 0)+1, (j) = *(i) ? strchr((i), 0)+1 : (i))