+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);
+